/* * 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. */ #pragma once #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "AudioPolicyInterface.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "EngineLibrary.h" #include "TypeConverter.h" namespace android { using content::AttributionSourceState; // ---------------------------------------------------------------------------- // Attenuation applied to STRATEGY_SONIFICATION streams when a headset is connected: 6dB #define SONIFICATION_HEADSET_VOLUME_FACTOR_DB (-6) // Min volume for STRATEGY_SONIFICATION streams when limited by music volume: -36dB #define SONIFICATION_HEADSET_VOLUME_MIN_DB (-36) // Max volume difference on A2DP between playing media and STRATEGY_SONIFICATION streams: 12dB #define SONIFICATION_A2DP_MAX_MEDIA_DIFF_DB (12) // Time in milliseconds during which we consider that music is still active after a music // track was stopped - see computeVolume() #define SONIFICATION_HEADSET_MUSIC_DELAY 5000 // Time in milliseconds during witch some streams are muted while the audio path // is switched #define MUTE_TIME_MS 2000 // multiplication factor applied to output latency when calculating a safe mute delay when // invalidating tracks #define LATENCY_MUTE_FACTOR 4 #define NUM_TEST_OUTPUTS 5 #define NUM_VOL_CURVE_KNEES 2 // Default minimum length allowed for offloading a compressed track // Can be overridden by the audio.offload.min.duration.secs property #define OFFLOAD_DEFAULT_MIN_DURATION_SECS 60 // ---------------------------------------------------------------------------- // AudioPolicyManager implements audio policy manager behavior common to all platforms. // ---------------------------------------------------------------------------- class AudioPolicyManager : public AudioPolicyInterface, public AudioPolicyManagerObserver { public: AudioPolicyManager(const sp& config, EngineInstance&& engine, AudioPolicyClientInterface *clientInterface); virtual ~AudioPolicyManager(); // AudioPolicyInterface virtual status_t setDeviceConnectionState(audio_policy_dev_state_t state, const android::media::audio::common::AudioPort& port, audio_format_t encodedFormat); virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device, const char *device_address); virtual status_t handleDeviceConfigChange(audio_devices_t device, const char *device_address, const char *device_name, audio_format_t encodedFormat); virtual void setPhoneState(audio_mode_t state); virtual void setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config); virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage); virtual void setSystemProperty(const char* property, const char* value); virtual status_t initCheck(); virtual audio_io_handle_t getOutput(audio_stream_type_t stream); status_t getOutputForAttr(const audio_attributes_t *attr, audio_io_handle_t *output, audio_session_t session, audio_stream_type_t *stream, const AttributionSourceState& attributionSource, audio_config_t *config, audio_output_flags_t *flags, audio_port_handle_t *selectedDeviceId, audio_port_handle_t *portId, std::vector *secondaryOutputs, output_type_t *outputType, bool *isSpatialized, bool *isBitPerfect) override; virtual status_t startOutput(audio_port_handle_t portId); virtual status_t stopOutput(audio_port_handle_t portId); virtual bool releaseOutput(audio_port_handle_t portId); virtual status_t getInputForAttr(const audio_attributes_t *attr, audio_io_handle_t *input, audio_unique_id_t riid, audio_session_t session, const AttributionSourceState& attributionSource, audio_config_base_t *config, audio_input_flags_t flags, audio_port_handle_t *selectedDeviceId, input_type_t *inputType, audio_port_handle_t *portId, uint32_t *virtualDeviceId); // indicates to the audio policy manager that the input starts being used. virtual status_t startInput(audio_port_handle_t portId); // indicates to the audio policy manager that the input stops being used. virtual status_t stopInput(audio_port_handle_t portId); virtual void releaseInput(audio_port_handle_t portId); virtual void checkCloseInputs(); virtual status_t setDeviceAbsoluteVolumeEnabled(audio_devices_t deviceType, const char *address, bool enabled, audio_stream_type_t streamToDriveAbs); /** * @brief initStreamVolume: even if the engine volume files provides min and max, keep this * api for compatibility reason. * AudioServer will get the min and max and may overwrite them if: * -using property (highest priority) * -not defined (-1 by convention), case when still using apm volume tables XML files * @param stream to be considered * @param indexMin to set * @param indexMax to set */ virtual void initStreamVolume(audio_stream_type_t stream, int indexMin, int indexMax); virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, int index, audio_devices_t device); virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, int *index, audio_devices_t device); virtual status_t setVolumeIndexForAttributes(const audio_attributes_t &attr, int index, audio_devices_t device); virtual status_t getVolumeIndexForAttributes(const audio_attributes_t &attr, int &index, audio_devices_t device); virtual status_t getMaxVolumeIndexForAttributes(const audio_attributes_t &attr, int &index); virtual status_t getMinVolumeIndexForAttributes(const audio_attributes_t &attr, int &index); status_t setVolumeCurveIndex(int index, audio_devices_t device, IVolumeCurves &volumeCurves); status_t getVolumeIndex(const IVolumeCurves &curves, int &index, const DeviceTypeSet& deviceTypes) const; // return the strategy corresponding to a given stream type virtual product_strategy_t getStrategyForStream(audio_stream_type_t stream) { return streamToStrategy(stream); } product_strategy_t streamToStrategy(audio_stream_type_t stream) const { auto attributes = mEngine->getAttributesForStreamType(stream); return mEngine->getProductStrategyForAttributes(attributes); } /** * Returns a vector of devices associated with attributes. * * An AudioTrack opened with specified attributes should play on the returned devices. * If forVolume is set to true, the caller is AudioService, determining the proper * device volume to adjust. * * Devices are determined in the following precedence: * 1) Devices associated with a dynamic policy matching the attributes. This is often * a remote submix from MIX_ROUTE_FLAG_LOOP_BACK. Secondary mixes from a * dynamic policy are not included. * * If no such dynamic policy then * 2) Devices containing an active client using setPreferredDevice * with same strategy as the attributes. * (from the default Engine::getOutputDevicesForAttributes() implementation). * * If no corresponding active client with setPreferredDevice then * 3) Devices associated with the strategy determined by the attributes * (from the default Engine::getOutputDevicesForAttributes() implementation). * * @param attributes to be considered * @param devices an AudioDeviceTypeAddrVector container passed in that * will be filled on success. * @param forVolume true if the devices are to be associated with current device volume. * @return NO_ERROR on success. */ virtual status_t getDevicesForAttributes( const audio_attributes_t &attributes, AudioDeviceTypeAddrVector *devices, bool forVolume); virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc = NULL); virtual status_t registerEffect(const effect_descriptor_t *desc, audio_io_handle_t io, product_strategy_t strategy, int session, int id); virtual status_t unregisterEffect(int id); virtual status_t setEffectEnabled(int id, bool enabled); status_t moveEffectsToIo(const std::vector& ids, audio_io_handle_t io) override; virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const; // return whether a stream is playing remotely, override to change the definition of // local/remote playback, used for instance by notification manager to not make // media players lose audio focus when not playing locally // For the base implementation, "remotely" means playing during screen mirroring which // uses an output for playback with a non-empty, non "0" address. virtual bool isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0) const; virtual bool isSourceActive(audio_source_t source) const; // helpers for dump(int fd) void dumpManualSurroundFormats(String8 *dst) const; void dump(String8 *dst) const; status_t dump(int fd) override; status_t setAllowedCapturePolicy(uid_t uid, audio_flags_mask_t capturePolicy) override; virtual audio_offload_mode_t getOffloadSupport(const audio_offload_info_t& offloadInfo); virtual bool isDirectOutputSupported(const audio_config_base_t& config, const audio_attributes_t& attributes); virtual status_t listAudioPorts(audio_port_role_t role, audio_port_type_t type, unsigned int *num_ports, struct audio_port_v7 *ports, unsigned int *generation); status_t listDeclaredDevicePorts(media::AudioPortRole role, std::vector* result) override; virtual status_t getAudioPort(struct audio_port_v7 *port); virtual status_t createAudioPatch(const struct audio_patch *patch, audio_patch_handle_t *handle, uid_t uid); virtual status_t releaseAudioPatch(audio_patch_handle_t handle, uid_t uid); virtual status_t listAudioPatches(unsigned int *num_patches, struct audio_patch *patches, unsigned int *generation); virtual status_t setAudioPortConfig(const struct audio_port_config *config); virtual void releaseResourcesForUid(uid_t uid); virtual status_t acquireSoundTriggerSession(audio_session_t *session, audio_io_handle_t *ioHandle, audio_devices_t *device); virtual status_t releaseSoundTriggerSession(audio_session_t session) { return mSoundTriggerSessions.releaseSession(session); } virtual status_t registerPolicyMixes(const Vector& mixes); virtual status_t unregisterPolicyMixes(Vector mixes); virtual status_t getRegisteredPolicyMixes(std::vector& mixes) override; virtual status_t updatePolicyMix( const AudioMix& mix, const std::vector& updatedCriteria) override; virtual status_t setUidDeviceAffinities(uid_t uid, const AudioDeviceTypeAddrVector& devices); virtual status_t removeUidDeviceAffinities(uid_t uid); virtual status_t setUserIdDeviceAffinities(int userId, const AudioDeviceTypeAddrVector& devices); virtual status_t removeUserIdDeviceAffinities(int userId); virtual status_t setDevicesRoleForStrategy(product_strategy_t strategy, device_role_t role, const AudioDeviceTypeAddrVector &devices); virtual status_t removeDevicesRoleForStrategy(product_strategy_t strategy, device_role_t role, const AudioDeviceTypeAddrVector &devices); virtual status_t clearDevicesRoleForStrategy(product_strategy_t strategy, device_role_t role); virtual status_t getDevicesForRoleAndStrategy(product_strategy_t strategy, device_role_t role, AudioDeviceTypeAddrVector &devices); virtual status_t setDevicesRoleForCapturePreset(audio_source_t audioSource, device_role_t role, const AudioDeviceTypeAddrVector &devices); virtual status_t addDevicesRoleForCapturePreset(audio_source_t audioSource, device_role_t role, const AudioDeviceTypeAddrVector &devices); virtual status_t removeDevicesRoleForCapturePreset( audio_source_t audioSource, device_role_t role, const AudioDeviceTypeAddrVector& devices); virtual status_t clearDevicesRoleForCapturePreset(audio_source_t audioSource, device_role_t role); virtual status_t getDevicesForRoleAndCapturePreset(audio_source_t audioSource, device_role_t role, AudioDeviceTypeAddrVector &devices); virtual status_t startAudioSource(const struct audio_port_config *source, const audio_attributes_t *attributes, audio_port_handle_t *portId, uid_t uid); virtual status_t stopAudioSource(audio_port_handle_t portId); virtual status_t setMasterMono(bool mono); virtual status_t getMasterMono(bool *mono); virtual float getStreamVolumeDB( audio_stream_type_t stream, int index, audio_devices_t device); virtual status_t getSurroundFormats(unsigned int *numSurroundFormats, audio_format_t *surroundFormats, bool *surroundFormatsEnabled); virtual status_t getReportedSurroundFormats(unsigned int *numSurroundFormats, audio_format_t *surroundFormats); virtual status_t setSurroundFormatEnabled(audio_format_t audioFormat, bool enabled); virtual status_t getHwOffloadFormatsSupportedForBluetoothMedia( audio_devices_t device, std::vector *formats); virtual void setAppState(audio_port_handle_t portId, app_state_t state); virtual bool isHapticPlaybackSupported(); virtual bool isUltrasoundSupported(); bool isHotwordStreamSupported(bool lookbackAudio) override; virtual status_t listAudioProductStrategies(AudioProductStrategyVector &strategies) { return mEngine->listAudioProductStrategies(strategies); } virtual status_t getProductStrategyFromAudioAttributes( const audio_attributes_t &aa, product_strategy_t &productStrategy, bool fallbackOnDefault) { productStrategy = mEngine->getProductStrategyForAttributes(aa, fallbackOnDefault); return (fallbackOnDefault && productStrategy == PRODUCT_STRATEGY_NONE) ? BAD_VALUE : NO_ERROR; } virtual status_t listAudioVolumeGroups(AudioVolumeGroupVector &groups) { return mEngine->listAudioVolumeGroups(groups); } virtual status_t getVolumeGroupFromAudioAttributes( const audio_attributes_t &aa, volume_group_t &volumeGroup, bool fallbackOnDefault) { volumeGroup = mEngine->getVolumeGroupForAttributes(aa, fallbackOnDefault); return (fallbackOnDefault && volumeGroup == VOLUME_GROUP_NONE) ? BAD_VALUE : NO_ERROR; } virtual bool canBeSpatialized(const audio_attributes_t *attr, const audio_config_t *config, const AudioDeviceTypeAddrVector &devices) const { return canBeSpatializedInt(attr, config, devices); } virtual status_t getSpatializerOutput(const audio_config_base_t *config, const audio_attributes_t *attr, audio_io_handle_t *output); virtual status_t releaseSpatializerOutput(audio_io_handle_t output); virtual audio_direct_mode_t getDirectPlaybackSupport(const audio_attributes_t *attr, const audio_config_t *config); virtual status_t getDirectProfilesForAttributes(const audio_attributes_t* attr, AudioProfileVector& audioProfiles); status_t getSupportedMixerAttributes( audio_port_handle_t portId, std::vector& mixerAttrs) override; status_t setPreferredMixerAttributes( const audio_attributes_t* attr, audio_port_handle_t portId, uid_t uid, const audio_mixer_attributes_t* mixerAttributes) override; status_t getPreferredMixerAttributes(const audio_attributes_t* attr, audio_port_handle_t portId, audio_mixer_attributes_t* mixerAttributes) override; status_t clearPreferredMixerAttributes(const audio_attributes_t* attr, audio_port_handle_t portId, uid_t uid) override; bool isCallScreenModeSupported() override; void onNewAudioModulesAvailable() override; status_t initialize(); protected: const AudioPolicyConfig& getConfig() const { return *(mConfig.get()); } // From AudioPolicyManagerObserver virtual const AudioPatchCollection &getAudioPatches() const { return mAudioPatches; } virtual const SoundTriggerSessionCollection &getSoundTriggerSessionCollection() const { return mSoundTriggerSessions; } virtual const AudioPolicyMixCollection &getAudioPolicyMixCollection() const { return mPolicyMixes; } virtual const SwAudioOutputCollection &getOutputs() const { return mOutputs; } virtual const AudioInputCollection &getInputs() const { return mInputs; } virtual const DeviceVector getAvailableOutputDevices() const { return mAvailableOutputDevices.filterForEngine(); } virtual const DeviceVector getAvailableInputDevices() const { // legacy and non-legacy remote-submix are managed by the engine, do not filter return mAvailableInputDevices; } virtual const sp &getDefaultOutputDevice() const { return mConfig->getDefaultOutputDevice(); } std::vector getVolumeGroups() const { return mEngine->getVolumeGroups(); } VolumeSource toVolumeSource(volume_group_t volumeGroup) const { return static_cast(volumeGroup); } /** * @brief toVolumeSource converts an audio attributes into a volume source * (either a legacy stream or a volume group). If fallback on default is allowed, and if * the audio attributes do not follow any specific product strategy's rule, it will be * associated to default volume source, e.g. music. Thus, any of call of volume API * using this translation function may affect the default volume source. * If fallback is not allowed and no matching rule is identified for the given attributes, * the volume source will be undefined, thus, no volume will be altered/modified. * @param attributes to be considered * @param fallbackOnDefault * @return volume source associated with given attributes, otherwise either music if * fallbackOnDefault is set or none. */ VolumeSource toVolumeSource( const audio_attributes_t &attributes, bool fallbackOnDefault = true) const { return toVolumeSource(mEngine->getVolumeGroupForAttributes( attributes, fallbackOnDefault)); } VolumeSource toVolumeSource( audio_stream_type_t stream, bool fallbackOnDefault = true) const { return toVolumeSource(mEngine->getVolumeGroupForStreamType( stream, fallbackOnDefault)); } IVolumeCurves &getVolumeCurves(VolumeSource volumeSource) { auto *curves = mEngine->getVolumeCurvesForVolumeGroup( static_cast(volumeSource)); ALOG_ASSERT(curves != nullptr, "No curves for volume source %d", volumeSource); return *curves; } IVolumeCurves &getVolumeCurves(const audio_attributes_t &attr) { auto *curves = mEngine->getVolumeCurvesForAttributes(attr); ALOG_ASSERT(curves != nullptr, "No curves for attributes %s", toString(attr).c_str()); return *curves; } IVolumeCurves &getVolumeCurves(audio_stream_type_t stream) { auto *curves = mEngine->getVolumeCurvesForStreamType(stream); ALOG_ASSERT(curves != nullptr, "No curves for stream %s", toString(stream).c_str()); return *curves; } void addOutput(audio_io_handle_t output, const sp& outputDesc); void removeOutput(audio_io_handle_t output); void addInput(audio_io_handle_t input, const sp& inputDesc); bool checkCloseInput(const sp& input); /** * @brief setOutputDevices change the route of the specified output. * @param caller of the method * @param outputDesc to be considered * @param device to be considered to route the output * @param force if true, force the routing even if no change. * @param delayMs if specified, delay to apply for mute/volume op when changing device * @param patchHandle if specified, the patch handle this output is connected through. * @param requiresMuteCheck if specified, for e.g. when another output is on a shared device * and currently active, allow to have proper drain and avoid pops * @param requiresVolumeCheck true if called requires to reapply volume if the routing did * not change (but the output is still routed). * @param skipMuteDelay if true will skip mute delay when installing audio patch * @return the number of ms we have slept to allow new routing to take effect in certain * cases. */ uint32_t setOutputDevices(const char *caller, const sp& outputDesc, const DeviceVector &device, bool force = false, int delayMs = 0, audio_patch_handle_t *patchHandle = NULL, bool requiresMuteCheck = true, bool requiresVolumeCheck = false, bool skipMuteDelay = false); status_t resetOutputDevice(const sp& outputDesc, int delayMs = 0, audio_patch_handle_t *patchHandle = NULL); status_t setInputDevice(audio_io_handle_t input, const sp &device, bool force = false, audio_patch_handle_t *patchHandle = NULL); status_t resetInputDevice(audio_io_handle_t input, audio_patch_handle_t *patchHandle = NULL); /** * Compute volume in DB that should be applied for a volume source and device types for a * particular volume index. * *

Note:Internally the compute method recursively calls itself to accurately * determine the volume given the currently active sources and devices. Some of the * interaction that require recursive computation are: *

    *
  • Match accessibility volume if ringtone volume is much louder
    • *
  • If voice call is active cap other volumes (except ringtone and accessibility)
    • *
  • Attenuate notification if headset is connected to prevent burst in user's ear
    • *
  • Attenuate ringtone if headset is connected and music is not playing and speaker is * part of the devices to prevent burst in user's ear
    • *
  • Limit music volume if headset is connected and notification is also active
    • *
* * @param curves volume curves to use for calculating volume value given the index * @param volumeSource source (use case) of the volume * @param index index to match in the volume curves for the calculation * @param deviceTypes devices that should be considered in the volume curves for the * calculation * @param computeInternalInteraction boolean indicating whether recursive volume computation * should continue within the volume computation. Defaults to {@code true} so the * volume interactions can be computed. Calls within the method should always set the * the value to {@code false} to prevent infinite recursion. * @return computed volume in DB */ virtual float computeVolume(IVolumeCurves &curves, VolumeSource volumeSource, int index, const DeviceTypeSet& deviceTypes, bool computeInternalInteraction = true); // rescale volume index from srcStream within range of dstStream int rescaleVolumeIndex(int srcIndex, VolumeSource fromVolumeSource, VolumeSource toVolumeSource); // check that volume change is permitted, compute and send new volume to audio hardware virtual status_t checkAndSetVolume(IVolumeCurves &curves, VolumeSource volumeSource, int index, const sp& outputDesc, DeviceTypeSet deviceTypes, int delayMs = 0, bool force = false); void setVoiceVolume(int index, IVolumeCurves &curves, bool isVoiceVolSrc, int delayMs); // returns true if the supplied set of volume source and devices are consistent with // call volume rules: // if Bluetooth SCO and voice call use different volume curves: // - do not apply voice call volume if Bluetooth SCO is used for call // - do not apply Bluetooth SCO volume if SCO or Hearing Aid is not used for call. // Also updates the booleans isVoiceVolSrc and isBtScoVolSrc according to the // volume source supplied. bool isVolumeConsistentForCalls(VolumeSource volumeSource, const DeviceTypeSet& deviceTypes, bool& isVoiceVolSrc, bool& isBtScoVolSrc, const char* caller); // apply all stream volumes to the specified output and device void applyStreamVolumes(const sp& outputDesc, const DeviceTypeSet& deviceTypes, int delayMs = 0, bool force = false); /** * @brief setStrategyMute Mute or unmute all active clients on the considered output * following the given strategy. * @param strategy to be considered * @param on true for mute, false for unmute * @param outputDesc to be considered * @param delayMs * @param device */ void setStrategyMute(product_strategy_t strategy, bool on, const sp& outputDesc, int delayMs = 0, DeviceTypeSet deviceTypes = DeviceTypeSet()); /** * @brief setVolumeSourceMute Mute or unmute the volume source on the specified output * @param volumeSource to be muted/unmute (may host legacy streams or by extension set of * audio attributes) * @param on true to mute, false to umute * @param outputDesc on which the client following the volume group shall be muted/umuted * @param delayMs * @param device */ void setVolumeSourceMute(VolumeSource volumeSource, bool on, const sp& outputDesc, int delayMs = 0, DeviceTypeSet deviceTypes = DeviceTypeSet()); audio_mode_t getPhoneState(); // true if device is in a telephony or VoIP call virtual bool isInCall() const; // true if given state represents a device in a telephony or VoIP call virtual bool isStateInCall(int state) const; // true if playback to call TX or capture from call RX is possible bool isCallAudioAccessible() const; // true if device is in a telephony or VoIP call or call screening is active bool isInCallOrScreening() const; // when a device is connected, checks if an open output can be routed // to this device. If none is open, tries to open one of the available outputs. // Returns an output suitable to this device or 0. // when a device is disconnected, checks if an output is not used any more and // returns its handle if any. // transfers the audio tracks and effects from one output thread to another accordingly. status_t checkOutputsForDevice(const sp& device, audio_policy_dev_state_t state, SortedVector& outputs); status_t checkInputsForDevice(const sp& device, audio_policy_dev_state_t state); // close an output and its companion duplicating output. void closeOutput(audio_io_handle_t output); // close an input. void closeInput(audio_io_handle_t input); // runs all the checks required for accommodating changes in devices and outputs // if 'onOutputsChecked' callback is provided, it is executed after the outputs // check via 'checkOutputForAllStrategies'. If the callback returns 'true', // A2DP suspend status is rechecked. void checkForDeviceAndOutputChanges(std::function onOutputsChecked = nullptr); /** * @brief updates routing for all outputs (including call if call in progress). * @param delayMs delay for unmuting if required * @param skipDelays if true all the delays will be skip while updating routing */ void updateCallAndOutputRouting(bool forceVolumeReeval = true, uint32_t delayMs = 0, bool skipDelays = false); void connectTelephonyRxAudioSource(uint32_t delayMs); void disconnectTelephonyAudioSource(sp &clientDesc); void connectTelephonyTxAudioSource(const sp &srcdevice, const sp &sinkDevice, uint32_t delayMs); bool isTelephonyRxOrTx(const sp& desc) const { return (mCallRxSourceClient != nullptr && mCallRxSourceClient->belongsToOutput(desc)) || (mCallTxSourceClient != nullptr && mCallTxSourceClient->belongsToOutput(desc)); } /** * @brief updates routing for all inputs. */ void updateInputRouting(); /** * @brief checkOutputForAttributes checks and if necessary changes outputs used for the * given audio attributes. * must be called every time a condition that affects the output choice for a given * attributes changes: connected device, phone state, force use... * Must be called before updateDevicesAndOutputs() * @param attr to be considered */ void checkOutputForAttributes(const audio_attributes_t &attr); /** * @brief checkAudioSourceForAttributes checks if any AudioSource following the same routing * as the given audio attributes is not routed and try to connect it. * It must be called once checkOutputForAttributes has been called for orphans AudioSource, * aka AudioSource not attached to any Audio Output (e.g. AudioSource connected to direct * Output which has been disconnected (and output closed) due to sink device unavailable). * @param attr to be considered */ void checkAudioSourceForAttributes(const audio_attributes_t &attr); bool followsSameRouting(const audio_attributes_t &lAttr, const audio_attributes_t &rAttr) const; /** * @brief checkOutputForAllStrategies Same as @see checkOutputForAttributes() * but for a all product strategies in order of priority */ void checkOutputForAllStrategies(); // Same as checkOutputForStrategy but for secondary outputs. Make sure if a secondary // output condition changes, the track is properly rerouted void checkSecondaryOutputs(); // manages A2DP output suspend/restore according to phone state and BT SCO usage void checkA2dpSuspend(); // selects the most appropriate device on output for current state // must be called every time a condition that affects the device choice for a given output is // changed: connected device, phone state, force use, output start, output stop.. // see getDeviceForStrategy() for the use of fromCache parameter DeviceVector getNewOutputDevices(const sp& outputDesc, bool fromCache); /** * @brief updateDevicesAndOutputs: updates cache of devices of the engine * must be called every time a condition that affects the device choice is changed: * connected device, phone state, force use... * cached values are used by getOutputDevicesForStream()/getDevicesForAttributes if * parameter fromCache is true. * Must be called after checkOutputForAllStrategies() */ void updateDevicesAndOutputs(); // selects the most appropriate device on input for current state sp getNewInputDevice(const sp& inputDesc); virtual uint32_t getMaxEffectsCpuLoad() { return mEffects.getMaxEffectsCpuLoad(); } virtual uint32_t getMaxEffectsMemory() { return mEffects.getMaxEffectsMemory(); } SortedVector getOutputsForDevices( const DeviceVector &devices, const SwAudioOutputCollection& openOutputs); /** * @brief checkDeviceMuteStrategies mute/unmute strategies * using an incompatible device combination. * if muting, wait for the audio in pcm buffer to be drained before proceeding * if unmuting, unmute only after the specified delay * @param outputDesc * @param prevDevice * @param delayMs * @return the number of ms waited */ virtual uint32_t checkDeviceMuteStrategies(const sp& outputDesc, const DeviceVector &prevDevices, uint32_t delayMs); audio_io_handle_t selectOutput(const SortedVector& outputs, audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, audio_format_t format = AUDIO_FORMAT_INVALID, audio_channel_mask_t channelMask = AUDIO_CHANNEL_NONE, uint32_t samplingRate = 0, audio_session_t sessionId = AUDIO_SESSION_NONE); // samplingRate, format, channelMask are in/out and so may be modified sp getInputProfile(const sp & device, uint32_t& samplingRate, audio_format_t& format, audio_channel_mask_t& channelMask, audio_input_flags_t flags); /** * @brief getProfileForOutput * @param devices vector of descriptors, may be empty if ignoring the device is required * @param samplingRate * @param format * @param channelMask * @param flags * @param directOnly * @return IOProfile to be used if found, nullptr otherwise */ sp getProfileForOutput(const DeviceVector &devices, uint32_t samplingRate, audio_format_t format, audio_channel_mask_t channelMask, audio_output_flags_t flags, bool directOnly); /** * Same as getProfileForOutput, but it looks for an MSD profile */ sp getMsdProfileForOutput(const DeviceVector &devices, uint32_t samplingRate, audio_format_t format, audio_channel_mask_t channelMask, audio_output_flags_t flags, bool directOnly); audio_io_handle_t selectOutputForMusicEffects(); virtual status_t addAudioPatch(audio_patch_handle_t handle, const sp& patch) { return mAudioPatches.addAudioPatch(handle, patch); } virtual status_t removeAudioPatch(audio_patch_handle_t handle) { return mAudioPatches.removeAudioPatch(handle); } bool isPrimaryModule(const sp &module) const { if (module == nullptr || mPrimaryModuleHandle == AUDIO_MODULE_HANDLE_NONE) { return false; } return module->getHandle() == mPrimaryModuleHandle; } DeviceVector availablePrimaryOutputDevices() const { if (!hasPrimaryOutput()) { return DeviceVector(); } return mAvailableOutputDevices.filter(mPrimaryOutput->supportedDevices()); } DeviceVector availablePrimaryModuleInputDevices() const { if (!hasPrimaryOutput()) { return DeviceVector(); } return mAvailableInputDevices.getDevicesFromHwModule( mPrimaryOutput->getModuleHandle()); } /** * @brief getFirstDeviceId of the Device Vector * @return if the collection is not empty, it returns the first device Id, * otherwise AUDIO_PORT_HANDLE_NONE */ audio_port_handle_t getFirstDeviceId(const DeviceVector &devices) const { return (devices.size() > 0) ? devices.itemAt(0)->getId() : AUDIO_PORT_HANDLE_NONE; } String8 getFirstDeviceAddress(const DeviceVector &devices) const { return (devices.size() > 0) ? String8(devices.itemAt(0)->address().c_str()) : String8(""); } status_t updateCallRouting( bool fromCache, uint32_t delayMs = 0, uint32_t *waitMs = nullptr); status_t updateCallRoutingInternal( const DeviceVector &rxDevices, uint32_t delayMs, uint32_t *waitMs); sp createTelephonyPatch(bool isRx, const sp &device, uint32_t delayMs); /** * @brief selectBestRxSinkDevicesForCall: if the primary module host both Telephony Rx/Tx * devices, and it declares also supporting a HW bridge between the Telephony Rx and the * given sink device for Voice Call audio attributes, select this device in prio. * Otherwise, getNewOutputDevices() is called on the primary output to select sink device. * @param fromCache true to prevent engine reconsidering all product strategies and retrieve * from engine cache. * @return vector of devices, empty if none is found. */ DeviceVector selectBestRxSinkDevicesForCall(bool fromCache); bool isDeviceOfModule(const sp& devDesc, const char *moduleId) const; status_t startSource(const sp& outputDesc, const sp& client, uint32_t *delayMs); status_t stopSource(const sp& outputDesc, const sp& client); void clearAudioPatches(uid_t uid); void clearSessionRoutes(uid_t uid); /** * @brief checkStrategyRoute: when an output is beeing rerouted, reconsider each output * that may host a strategy playing on the considered output. * @param ps product strategy that initiated the rerouting * @param ouptutToSkip output that initiated the rerouting */ void checkStrategyRoute(product_strategy_t ps, audio_io_handle_t ouptutToSkip); status_t hasPrimaryOutput() const { return mPrimaryOutput != 0; } status_t connectAudioSource(const sp& sourceDesc, uint32_t delayMs); status_t disconnectAudioSource(const sp& sourceDesc); status_t connectAudioSourceToSink(const sp& sourceDesc, const sp &sinkDevice, const struct audio_patch *patch, audio_patch_handle_t &handle, uid_t uid, uint32_t delayMs); sp getSourceForAttributesOnOutput(audio_io_handle_t output, const audio_attributes_t &attr); void clearAudioSourcesForOutput(audio_io_handle_t output); void cleanUpForDevice(const sp& deviceDesc); void clearAudioSources(uid_t uid); static bool streamsMatchForvolume(audio_stream_type_t stream1, audio_stream_type_t stream2); void closeActiveClients(const sp& input); void closeClient(audio_port_handle_t portId); /** * @brief isAnyDeviceTypeActive: returns true if at least one active client is routed to * one of the specified devices * @param deviceTypes list of devices to consider */ bool isAnyDeviceTypeActive(const DeviceTypeSet& deviceTypes) const; /** * @brief isLeUnicastActive: returns true if a call is active or at least one active client * is routed to a LE unicast device */ bool isLeUnicastActive() const; void checkLeBroadcastRoutes(bool wasUnicastActive, sp ignoredOutput, uint32_t delayMs); status_t startAudioSourceInternal(const struct audio_port_config *source, const audio_attributes_t *attributes, audio_port_handle_t *portId, uid_t uid, bool internal, bool isCallRx, uint32_t delayMs); const uid_t mUidCached; // AID_AUDIOSERVER sp mConfig; EngineInstance mEngine; // Audio Policy Engine instance AudioPolicyClientInterface *mpClientInterface; // audio policy client interface sp mPrimaryOutput; // primary output descriptor // mPrimaryModuleHandle is cached mPrimaryOutput->getModuleHandle(); audio_module_handle_t mPrimaryModuleHandle = AUDIO_MODULE_HANDLE_NONE; // list of descriptors for outputs currently opened sp mSpatializerOutput; SwAudioOutputCollection mOutputs; // copy of mOutputs before setDeviceConnectionState() opens new outputs // reset to mOutputs when updateDevicesAndOutputs() is called. SwAudioOutputCollection mPreviousOutputs; AudioInputCollection mInputs; // list of input descriptors DeviceVector mAvailableOutputDevices; // all available output devices DeviceVector mAvailableInputDevices; // all available input devices bool mLimitRingtoneVolume; // limit ringtone volume to music volume if headset connected float mLastVoiceVolume; // last voice volume value sent to audio HAL bool mA2dpSuspended; // true if A2DP output is suspended EffectDescriptorCollection mEffects; // list of registered audio effects HwModuleCollection mHwModules; // contains modules that have been loaded successfully std::atomic mAudioPortGeneration; AudioPatchCollection mAudioPatches; SoundTriggerSessionCollection mSoundTriggerSessions; HwAudioOutputCollection mHwOutputs; SourceClientCollection mAudioSources; // for supporting "beacon" streams, i.e. streams that only play on speaker, and never // when something other than STREAM_TTS (a.k.a. "Transmitted Through Speaker") is playing enum { STARTING_OUTPUT, STARTING_BEACON, STOPPING_OUTPUT, STOPPING_BEACON }; uint32_t mBeaconMuteRefCount; // ref count for stream that would mute beacon uint32_t mBeaconPlayingRefCount;// ref count for the playing beacon streams bool mBeaconMuted; // has STREAM_TTS been muted // true if a dedicated output for TTS stream or Ultrasound is available bool mTtsOutputAvailable; bool mMasterMono; // true if we wish to force all outputs to mono AudioPolicyMixCollection mPolicyMixes; // list of registered mixes audio_io_handle_t mMusicEffectOutput; // output selected for music effects uint32_t nextAudioPortGeneration(); // Surround formats that are enabled manually. Taken into account when // "encoded surround" is forced into "manual" mode. std::unordered_set mManualSurroundFormats; std::unordered_map mAllowedCapturePolicies; // The map of device descriptor and formats reported by the device. std::map, FormatVector> mReportedFormatsMap; // Cached product strategy ID corresponding to legacy strategy STRATEGY_PHONE product_strategy_t mCommunnicationStrategy; // The port handle of the hardware audio source created internally for the Call RX audio // end point. sp mCallRxSourceClient; sp mCallTxSourceClient; std::map>> mPreferredMixerAttrInfos; // Support for Multi-Stream Decoder (MSD) module sp getMsdAudioInDevice() const; DeviceVector getMsdAudioOutDevices() const; const AudioPatchCollection getMsdOutputPatches() const; status_t getMsdProfiles(bool hwAvSync, const InputProfileCollection &inputProfiles, const OutputProfileCollection &outputProfiles, const sp &sourceDevice, const sp &sinkDevice, AudioProfileVector &sourceProfiles, AudioProfileVector &sinkProfiles) const; status_t getBestMsdConfig(bool hwAvSync, const AudioProfileVector &sourceProfiles, const AudioProfileVector &sinkProfiles, audio_port_config *sourceConfig, audio_port_config *sinkConfig) const; PatchBuilder buildMsdPatch(bool msdIsSource, const sp &device) const; status_t setMsdOutputPatches(const DeviceVector *outputDevices = nullptr); void releaseMsdOutputPatches(const DeviceVector& devices); bool msdHasPatchesToAllDevices(const AudioDeviceTypeAddrVector& devices); // Overload of setDeviceConnectionState() status_t setDeviceConnectionState(audio_devices_t deviceType, audio_policy_dev_state_t state, const char* device_address, const char* device_name, audio_format_t encodedFormat); // Called by setDeviceConnectionState() status_t deviceToAudioPort(audio_devices_t deviceType, const char* device_address, const char* device_name, media::AudioPortFw* aidPort); bool isMsdPatch(const audio_patch_handle_t &handle) const; private: void onNewAudioModulesAvailableInt(DeviceVector *newDevices); // Add or remove AC3 DTS encodings based on user preferences. void modifySurroundFormats(const sp& devDesc, FormatVector *formatsPtr); void modifySurroundChannelMasks(ChannelMaskSet *channelMasksPtr); // If any, resolve any "dynamic" fields of the Audio Profiles collection of and IOProfile void updateAudioProfiles(const sp& devDesc, audio_io_handle_t ioHandle, const sp &profiles); // Notify the policy client to prepare for disconnecting external device. void prepareToDisconnectExternalDevice(const sp &device); // Notify the policy client of any change of device state with AUDIO_IO_HANDLE_NONE, // so that the client interprets it as global to audio hardware interfaces. // It can give a chance to HAL implementer to retrieve dynamic capabilities associated // to this device for example. // TODO avoid opening stream to retrieve capabilities of a profile. status_t broadcastDeviceConnectionState(const sp &device, media::DeviceConnectedState state); // updates device caching and output for streams that can influence the // routing of notifications void handleNotificationRoutingForStream(audio_stream_type_t stream); uint32_t curAudioPortGeneration() const { return mAudioPortGeneration; } // internal method, get audio_attributes_t from either a source audio_attributes_t // or audio_stream_type_t, respectively. status_t getAudioAttributes(audio_attributes_t *dstAttr, const audio_attributes_t *srcAttr, audio_stream_type_t srcStream); // internal method, called by getOutputForAttr() and connectAudioSource. status_t getOutputForAttrInt(audio_attributes_t *resultAttr, audio_io_handle_t *output, audio_session_t session, const audio_attributes_t *attr, audio_stream_type_t *stream, uid_t uid, audio_config_t *config, audio_output_flags_t *flags, audio_port_handle_t *selectedDeviceId, bool *isRequestedDeviceForExclusiveUse, std::vector> *secondaryMixes, output_type_t *outputType, bool *isSpatialized, bool *isBitPerfect); // internal method to return the output handle for the given device and format audio_io_handle_t getOutputForDevices( const DeviceVector &devices, audio_session_t session, const audio_attributes_t *attr, const audio_config_t *config, audio_output_flags_t *flags, bool *isSpatialized, sp prefMixerAttrInfo = nullptr, bool forceMutingHaptic = false); // Internal method checking if a direct output can be opened matching the requested // attributes, flags, config and devices. // If NAME_NOT_FOUND is returned, an attempt can be made to open a mixed output. status_t openDirectOutput( audio_stream_type_t stream, audio_session_t session, const audio_config_t *config, audio_output_flags_t flags, const DeviceVector &devices, audio_io_handle_t *output, audio_attributes_t attributes); /** * @brief Queries if some kind of spatialization will be performed if the audio playback * context described by the provided arguments is present. * The context is made of: * - The audio attributes describing the playback use case. * - The audio configuration describing the audio format, channels, sampling rate ... * - The devices describing the sink audio device selected for playback. * All arguments are optional and only the specified arguments are used to match against * supported criteria. For instance, supplying no argument will tell if spatialization is * supported or not in general. * @param attr audio attributes describing the playback use case * @param config audio configuration describing the audio format, channels, sample rate... * @param devices the sink audio device selected for playback * @return true if spatialization is possible for this context, false otherwise. */ virtual bool canBeSpatializedInt(const audio_attributes_t *attr, const audio_config_t *config, const AudioDeviceTypeAddrVector &devices) const; /** * @brief Gets an IOProfile for a spatializer output with the best match with * provided arguments. * The caller can have the devices criteria ignored by passing and empty vector, and * getSpatializerOutputProfile() will ignore the devices when looking for a match. * Otherwise an output profile supporting a spatializer effect that can be routed * to the specified devices must exist. * @param config audio configuration describing the audio format, channels, sample rate... * @param devices the sink audio device selected for playback * @return an IOProfile that canbe used to open a spatializer output. */ sp getSpatializerOutputProfile(const audio_config_t *config, const AudioDeviceTypeAddrVector &devices) const; void checkVirtualizerClientRoutes(); /** * @brief Returns true if at least one device can only be reached via the output passed * as argument. Always returns false for duplicated outputs. * This can be used to decide if an output can be closed without forbidding * playback to any given device. * @param outputDesc the output to consider * @return true if at least one device can only be reached via the output. */ bool isOutputOnlyAvailableRouteToSomeDevice(const sp& outputDesc); /** * @brief getInputForDevice selects an input handle for a given input device and * requester context * @param device to be used by requester, selected by policy mix rules or engine * @param session requester session id * @param uid requester uid * @param attributes requester audio attributes (e.g. input source and tags matter) * @param config requested audio configuration (e.g. sample rate, format, channel mask), * will be updated if current configuration doesn't support but another * one does * @param flags requester input flags * @param policyMix may be null, policy rules to be followed by the requester * @return input io handle aka unique input identifier selected for this device. */ audio_io_handle_t getInputForDevice(const sp &device, audio_session_t session, const audio_attributes_t &attributes, audio_config_base_t *config, audio_input_flags_t flags, const sp &policyMix); // event is one of STARTING_OUTPUT, STARTING_BEACON, STOPPING_OUTPUT, STOPPING_BEACON // returns 0 if no mute/unmute event happened, the largest latency of the device where // the mute/unmute happened uint32_t handleEventForBeacon(int event); uint32_t setBeaconMute(bool mute); bool isValidAttributes(const audio_attributes_t *paa); // Called by setDeviceConnectionState(). status_t setDeviceConnectionStateInt(audio_policy_dev_state_t state, const android::media::audio::common::AudioPort& port, audio_format_t encodedFormat); status_t setDeviceConnectionStateInt(audio_devices_t deviceType, audio_policy_dev_state_t state, const char *device_address, const char *device_name, audio_format_t encodedFormat); status_t setDeviceConnectionStateInt(const sp &device, audio_policy_dev_state_t state); void setEngineDeviceConnectionState(const sp device, audio_policy_dev_state_t state); void updateMono(audio_io_handle_t output) { AudioParameter param; param.addInt(String8(AudioParameter::keyMonoOutput), (int)mMasterMono); mpClientInterface->setParameters(output, param.toString()); } /** * @brief createAudioPatchInternal internal function to manage audio patch creation * @param[in] patch structure containing sink and source ports configuration * @param[out] handle patch handle to be provided if patch installed correctly * @param[in] uid of the client * @param[in] delayMs if required * @param[in] sourceDesc source client to be configured when creating the patch, i.e. * assigning an Output (HW or SW) used for volume control. * @return NO_ERROR if patch installed correctly, error code otherwise. */ status_t createAudioPatchInternal(const struct audio_patch *patch, audio_patch_handle_t *handle, uid_t uid, uint32_t delayMs, const sp& sourceDesc); /** * @brief releaseAudioPatchInternal internal function to remove an audio patch * @param[in] handle of the patch to be removed * @param[in] delayMs if required * @param[in] sourceDesc [optional] in case of external source, source client to be * unrouted from the patch, i.e. assigning an Output (HW or SW) * @return NO_ERROR if patch removed correctly, error code otherwise. */ status_t releaseAudioPatchInternal(audio_patch_handle_t handle, uint32_t delayMs = 0, const sp& sourceDesc = nullptr); status_t installPatch(const char *caller, audio_patch_handle_t *patchHandle, AudioIODescriptorInterface *ioDescriptor, const struct audio_patch *patch, int delayMs); status_t installPatch(const char *caller, ssize_t index, audio_patch_handle_t *patchHandle, const struct audio_patch *patch, int delayMs, uid_t uid, sp *patchDescPtr); bool areAllDevicesSupported( const AudioDeviceTypeAddrVector& devices, std::function predicate, const char* context, bool matchAddress = true); /** * @brief changeOutputDevicesMuteState mute/unmute devices using checkDeviceMuteStrategies * @param devices devices to mute/unmute */ void changeOutputDevicesMuteState(const AudioDeviceTypeAddrVector& devices); /** * @brief Returns a vector of software output descriptor that support the queried devices * @param devices devices to query * @param openOutputs open outputs where the devices are supported as determined by * SwAudioOutputDescriptor::supportsAtLeastOne */ std::vector> getSoftwareOutputsForDevices( const AudioDeviceTypeAddrVector& devices) const; bool isScoRequestedForComm() const; bool isHearingAidUsedForComm() const; bool areAllActiveTracksRerouted(const sp& output); /** * @brief Opens an output stream from the supplied IOProfile and route it to the * supplied audio devices. If a mixer config is specified, it is forwarded to audio * flinger. If not, a default config is derived from the output stream config. * Also opens a duplicating output if needed and queries the audio HAL for supported * audio profiles if the IOProfile is dynamic. * @param[in] profile IOProfile to use as template * @param[in] devices initial route to apply to this output stream * @param[in] mixerConfig if not null, use this to configure the mixer * @param[in] halConfig if not null, use this to configure the HAL * @param[in] flags the flags to be used to open the output * @return an output descriptor for the newly opened stream or null in case of error. */ sp openOutputWithProfileAndDevice( const sp& profile, const DeviceVector& devices, const audio_config_base_t *mixerConfig = nullptr, const audio_config_t *halConfig = nullptr, audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE); bool isOffloadPossible(const audio_offload_info_t& offloadInfo, bool durationIgnored = false); // adds the profiles from the outputProfile to the passed audioProfilesVector // without duplicating them if already present void addPortProfilesToVector(sp outputProfile, AudioProfileVector& audioProfilesVector); // Searches for a compatible profile with the sample rate, audio format and channel mask // in the list of passed HwModule(s). // returns a compatible profile if found, nullptr otherwise sp searchCompatibleProfileHwModules ( const HwModuleCollection& hwModules, const DeviceVector& devices, uint32_t samplingRate, audio_format_t format, audio_channel_mask_t channelMask, audio_output_flags_t flags, bool directOnly); // Filters only the relevant flags for getProfileForOutput audio_output_flags_t getRelevantFlags (audio_output_flags_t flags, bool directOnly); status_t getDevicesForAttributes(const audio_attributes_t &attr, DeviceVector &devices, bool forVolume); status_t getProfilesForDevices(const DeviceVector& devices, AudioProfileVector& audioProfiles, uint32_t flags, bool isInput); /** * Returns the preferred mixer attributes info for the given device port id and strategy. * Bit-perfect mixer attributes will be returned if it is active and * `activeBitPerfectPreferred` is true. */ sp getPreferredMixerAttributesInfo( audio_port_handle_t devicePortId, product_strategy_t strategy, bool activeBitPerfectPreferred = false); sp reopenOutput( sp outputDesc, const audio_config_t *config, audio_output_flags_t flags, const char* caller); void reopenOutputsWithDevices( const std::map& outputsToReopen); PortHandleVector getClientsForStream(audio_stream_type_t streamType) const; void invalidateStreams(StreamTypeVector streams) const; bool checkHapticCompatibilityOnSpatializerOutput(const audio_config_t* config, audio_session_t sessionId) const; void updateClientsInternalMute(const sp& desc); float adjustDeviceAttenuationForAbsVolume(IVolumeCurves &curves, VolumeSource volumeSource, int index, const DeviceTypeSet &deviceTypes); // Contains for devices that support absolute volume the audio attributes // corresponding to the streams that are driving the volume changes std::unordered_map mAbsoluteVolumeDrivingStreams; }; };