1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_AUDIOPOLICY_INTERFACE_H 18 #define ANDROID_AUDIOPOLICY_INTERFACE_H 19 20 #include <android/media/DeviceConnectedState.h> 21 #include <media/AudioCommonTypes.h> 22 #include <media/AudioContainers.h> 23 #include <media/AudioDeviceTypeAddr.h> 24 #include <media/AudioSystem.h> 25 #include <media/AudioPolicy.h> 26 #include <media/DeviceDescriptorBase.h> 27 #include <android/content/AttributionSourceState.h> 28 #include <utils/String8.h> 29 30 namespace android { 31 32 using content::AttributionSourceState; 33 34 // ---------------------------------------------------------------------------- 35 36 // The AudioPolicyInterface and AudioPolicyClientInterface classes define the communication 37 // interfaces between the platform specific audio policy manager and Android generic audio policy 38 // manager. 39 // The platform specific audio policy manager must implement methods of the AudioPolicyInterface 40 // class. 41 // This implementation makes use of the AudioPolicyClientInterface to control the activity and 42 // configuration of audio input and output streams. 43 // 44 // The platform specific audio policy manager is in charge of the audio routing and volume control 45 // policies for a given platform. 46 // The main roles of this module are: 47 // - keep track of current system state (removable device connections, phone state, 48 // user requests...). 49 // System state changes and user actions are notified to audio policy manager with methods of the 50 // AudioPolicyInterface. 51 // - process getOutput() queries received when AudioTrack objects are created: Those queries 52 // return a handler on an output that has been selected, configured and opened by the audio 53 // policy manager and that must be used by the AudioTrack when registering to the AudioFlinger 54 // with the createTrack() method. 55 // When the AudioTrack object is released, a putOutput() query is received and the audio policy 56 // manager can decide to close or reconfigure the output depending on other streams using this 57 // output and current system state. 58 // - similarly process getInput() and putInput() queries received from AudioRecord objects and 59 // configure audio inputs. 60 // - process volume control requests: the stream volume is converted from an index value 61 // (received from UI) to a float value applicable to each output as a function of platform 62 // specificsettings and current output route (destination device). It also make sure that streams 63 // are not muted if not allowed (e.g. camera shutter sound in some countries). 64 // 65 // The platform specific audio policy manager is provided as a shared library by platform vendors 66 // (as for libaudio.so) and is linked with libaudioflinger.so 67 // 68 // NOTE: by convention, the implementation of the AudioPolicyInterface in AudioPolicyManager does 69 // not have to perform any nullptr check on input arguments: The caller of this API is 70 // AudioPolicyService running in the same process and in charge of validating arguments received 71 // from incoming binder calls before calling AudioPolicyManager. 72 73 // Audio Policy Manager Interface 74 class AudioPolicyInterface 75 { 76 77 public: 78 typedef enum { 79 API_INPUT_INVALID = -1, 80 API_INPUT_LEGACY = 0,// e.g. audio recording from a microphone 81 API_INPUT_MIX_CAPTURE,// used for "remote submix" legacy mode (no DAP), 82 // capture of the media to play it remotely 83 API_INPUT_MIX_EXT_POLICY_REROUTE,// used for platform audio rerouting, where mixes are 84 // handled by external and dynamically installed 85 // policies which reroute audio mixes 86 API_INPUT_MIX_PUBLIC_CAPTURE_PLAYBACK, // used for playback capture with a MediaProjection 87 API_INPUT_TELEPHONY_RX, // used for capture from telephony RX path 88 } input_type_t; 89 90 typedef enum { 91 API_OUTPUT_INVALID = -1, 92 API_OUTPUT_LEGACY = 0,// e.g. audio playing to speaker 93 API_OUT_MIX_PLAYBACK, // used for "remote submix" playback of audio from remote source 94 // to local capture 95 API_OUTPUT_TELEPHONY_TX, // used for playback to telephony TX path 96 } output_type_t; 97 98 public: ~AudioPolicyInterface()99 virtual ~AudioPolicyInterface() {} 100 // 101 // configuration functions 102 // 103 104 // Informs APM that new HAL modules are available. This typically happens 105 // due to registration of an audio HAL service. 106 virtual void onNewAudioModulesAvailable() = 0; 107 108 // indicate a change in device connection status 109 virtual status_t setDeviceConnectionState(audio_policy_dev_state_t state, 110 const android::media::audio::common::AudioPort& port, 111 audio_format_t encodedFormat) = 0; 112 // retrieve a device connection status 113 virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device, 114 const char *device_address) = 0; 115 // indicate a change in device configuration 116 virtual status_t handleDeviceConfigChange(audio_devices_t device, 117 const char *device_address, 118 const char *device_name, 119 audio_format_t encodedFormat) = 0; 120 // indicate a change in phone state. Valid phones states are defined by audio_mode_t 121 virtual void setPhoneState(audio_mode_t state) = 0; 122 // force using a specific device category for the specified usage 123 virtual void setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) = 0; 124 // retrieve current device category forced for a given usage 125 virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) = 0; 126 // set a system property (e.g. camera sound always audible) 127 virtual void setSystemProperty(const char* property, const char* value) = 0; 128 // check proper initialization 129 virtual status_t initCheck() = 0; 130 131 // 132 // Audio routing query functions 133 // 134 135 // request an output appropriate for playback of the supplied stream type and parameters 136 virtual audio_io_handle_t getOutput(audio_stream_type_t stream) = 0; 137 virtual status_t getOutputForAttr(const audio_attributes_t *attr, 138 audio_io_handle_t *output, 139 audio_session_t session, 140 audio_stream_type_t *stream, 141 const AttributionSourceState& attributionSource, 142 audio_config_t *config, 143 audio_output_flags_t *flags, 144 audio_port_handle_t *selectedDeviceId, 145 audio_port_handle_t *portId, 146 std::vector<audio_io_handle_t> *secondaryOutputs, 147 output_type_t *outputType, 148 bool *isSpatialized, 149 bool *isBitPerfect) = 0; 150 // indicates to the audio policy manager that the output starts being used by corresponding 151 // stream. 152 virtual status_t startOutput(audio_port_handle_t portId) = 0; 153 // indicates to the audio policy manager that the output stops being used by corresponding 154 // stream. 155 virtual status_t stopOutput(audio_port_handle_t portId) = 0; 156 // releases the output, return true if the output descriptor is reopened. 157 virtual bool releaseOutput(audio_port_handle_t portId) = 0; 158 159 // request an input appropriate for record from the supplied device with supplied parameters. 160 virtual status_t getInputForAttr(const audio_attributes_t *attr, 161 audio_io_handle_t *input, 162 audio_unique_id_t riid, 163 audio_session_t session, 164 const AttributionSourceState& attributionSource, 165 audio_config_base_t *config, 166 audio_input_flags_t flags, 167 audio_port_handle_t *selectedDeviceId, 168 input_type_t *inputType, 169 audio_port_handle_t *portId) = 0; 170 // indicates to the audio policy manager that the input starts being used. 171 virtual status_t startInput(audio_port_handle_t portId) = 0; 172 // indicates to the audio policy manager that the input stops being used. 173 virtual status_t stopInput(audio_port_handle_t portId) = 0; 174 // releases the input. 175 virtual void releaseInput(audio_port_handle_t portId) = 0; 176 177 // 178 // volume control functions 179 // 180 181 // initialises stream volume conversion parameters by specifying volume index range. 182 virtual void initStreamVolume(audio_stream_type_t stream, 183 int indexMin, 184 int indexMax) = 0; 185 186 // sets the new stream volume at a level corresponding to the supplied index for the 187 // supplied device. By convention, specifying AUDIO_DEVICE_OUT_DEFAULT_FOR_VOLUME means 188 // setting volume for all devices 189 virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, 190 int index, 191 audio_devices_t device) = 0; 192 193 // retrieve current volume index for the specified stream and the 194 // specified device. By convention, specifying AUDIO_DEVICE_OUT_DEFAULT_FOR_VOLUME means 195 // querying the volume of the active device. 196 virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, 197 int *index, 198 audio_devices_t device) = 0; 199 200 virtual status_t setVolumeIndexForAttributes(const audio_attributes_t &attr, 201 int index, 202 audio_devices_t device) = 0; 203 virtual status_t getVolumeIndexForAttributes(const audio_attributes_t &attr, 204 int &index, 205 audio_devices_t device) = 0; 206 207 virtual status_t getMaxVolumeIndexForAttributes(const audio_attributes_t &attr, 208 int &index) = 0; 209 210 virtual status_t getMinVolumeIndexForAttributes(const audio_attributes_t &attr, 211 int &index) = 0; 212 213 // return the strategy corresponding to a given stream type 214 virtual product_strategy_t getStrategyForStream(audio_stream_type_t stream) = 0; 215 216 // retrieves the list of enabled output devices for the given audio attributes 217 virtual status_t getDevicesForAttributes(const audio_attributes_t &attr, 218 AudioDeviceTypeAddrVector *devices, 219 bool forVolume) = 0; 220 221 // Audio effect management 222 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc) = 0; 223 virtual status_t registerEffect(const effect_descriptor_t *desc, 224 audio_io_handle_t io, 225 product_strategy_t strategy, 226 int session, 227 int id) = 0; 228 virtual status_t unregisterEffect(int id) = 0; 229 virtual status_t setEffectEnabled(int id, bool enabled) = 0; 230 virtual status_t moveEffectsToIo(const std::vector<int>& ids, audio_io_handle_t io) = 0; 231 232 virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const = 0; 233 virtual bool isStreamActiveRemotely(audio_stream_type_t stream, 234 uint32_t inPastMs = 0) const = 0; 235 virtual bool isSourceActive(audio_source_t source) const = 0; 236 237 //dump state 238 virtual status_t dump(int fd) = 0; 239 240 virtual status_t setAllowedCapturePolicy(uid_t uid, audio_flags_mask_t flags) = 0; 241 virtual audio_offload_mode_t getOffloadSupport(const audio_offload_info_t& offloadInfo) = 0; 242 virtual bool isDirectOutputSupported(const audio_config_base_t& config, 243 const audio_attributes_t& attributes) = 0; 244 245 virtual status_t listAudioPorts(audio_port_role_t role, 246 audio_port_type_t type, 247 unsigned int *num_ports, 248 struct audio_port_v7 *ports, 249 unsigned int *generation) = 0; 250 virtual status_t listDeclaredDevicePorts(media::AudioPortRole role, 251 std::vector<media::AudioPortFw>* result) = 0; 252 virtual status_t getAudioPort(struct audio_port_v7 *port) = 0; 253 virtual status_t createAudioPatch(const struct audio_patch *patch, 254 audio_patch_handle_t *handle, 255 uid_t uid) = 0; 256 virtual status_t releaseAudioPatch(audio_patch_handle_t handle, 257 uid_t uid) = 0; 258 virtual status_t listAudioPatches(unsigned int *num_patches, 259 struct audio_patch *patches, 260 unsigned int *generation) = 0; 261 virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0; 262 virtual void releaseResourcesForUid(uid_t uid) = 0; 263 264 virtual status_t acquireSoundTriggerSession(audio_session_t *session, 265 audio_io_handle_t *ioHandle, 266 audio_devices_t *device) = 0; 267 268 virtual status_t releaseSoundTriggerSession(audio_session_t session) = 0; 269 270 virtual status_t registerPolicyMixes(const Vector<AudioMix>& mixes) = 0; 271 virtual status_t unregisterPolicyMixes(Vector<AudioMix> mixes) = 0; 272 273 virtual status_t setUidDeviceAffinities(uid_t uid, const AudioDeviceTypeAddrVector& devices) 274 = 0; 275 virtual status_t removeUidDeviceAffinities(uid_t uid) = 0; 276 277 virtual status_t setUserIdDeviceAffinities(int userId, 278 const AudioDeviceTypeAddrVector& devices) = 0; 279 virtual status_t removeUserIdDeviceAffinities(int userId) = 0; 280 281 virtual status_t startAudioSource(const struct audio_port_config *source, 282 const audio_attributes_t *attributes, 283 audio_port_handle_t *portId, 284 uid_t uid) = 0; 285 virtual status_t stopAudioSource(audio_port_handle_t portId) = 0; 286 287 virtual status_t setMasterMono(bool mono) = 0; 288 virtual status_t getMasterMono(bool *mono) = 0; 289 290 virtual float getStreamVolumeDB( 291 audio_stream_type_t stream, int index, audio_devices_t device) = 0; 292 293 virtual status_t getSurroundFormats(unsigned int *numSurroundFormats, 294 audio_format_t *surroundFormats, 295 bool *surroundFormatsEnabled) = 0; 296 297 virtual status_t getReportedSurroundFormats(unsigned int *numSurroundFormats, 298 audio_format_t *surroundFormats) = 0; 299 300 virtual status_t setSurroundFormatEnabled(audio_format_t audioFormat, bool enabled) = 0; 301 302 virtual bool isHapticPlaybackSupported() = 0; 303 304 virtual bool isUltrasoundSupported() = 0; 305 306 virtual bool isHotwordStreamSupported(bool lookbackAudio) = 0; 307 308 virtual status_t getHwOffloadFormatsSupportedForBluetoothMedia( 309 audio_devices_t device, std::vector<audio_format_t> *formats) = 0; 310 311 virtual void setAppState(audio_port_handle_t portId, app_state_t state) = 0; 312 313 virtual status_t listAudioProductStrategies(AudioProductStrategyVector &strategies) = 0; 314 315 virtual status_t getProductStrategyFromAudioAttributes( 316 const audio_attributes_t &aa, product_strategy_t &productStrategy, 317 bool fallbackOnDefault) = 0; 318 319 virtual status_t listAudioVolumeGroups(AudioVolumeGroupVector &groups) = 0; 320 321 virtual status_t getVolumeGroupFromAudioAttributes( 322 const audio_attributes_t &aa, volume_group_t &volumeGroup, bool fallbackOnDefault) = 0; 323 324 virtual bool isCallScreenModeSupported() = 0; 325 326 virtual status_t setDevicesRoleForStrategy(product_strategy_t strategy, 327 device_role_t role, 328 const AudioDeviceTypeAddrVector &devices) = 0; 329 330 virtual status_t removeDevicesRoleForStrategy(product_strategy_t strategy, 331 device_role_t role, 332 const AudioDeviceTypeAddrVector &devices) = 0; 333 334 virtual status_t clearDevicesRoleForStrategy(product_strategy_t strategy, 335 device_role_t role) = 0; 336 337 virtual status_t getDevicesForRoleAndStrategy(product_strategy_t strategy, 338 device_role_t role, 339 AudioDeviceTypeAddrVector &devices) = 0; 340 341 virtual status_t setDevicesRoleForCapturePreset(audio_source_t audioSource, 342 device_role_t role, 343 const AudioDeviceTypeAddrVector &devices) = 0; 344 345 virtual status_t addDevicesRoleForCapturePreset(audio_source_t audioSource, 346 device_role_t role, 347 const AudioDeviceTypeAddrVector &devices) = 0; 348 349 virtual status_t removeDevicesRoleForCapturePreset( 350 audio_source_t audioSource, device_role_t role, 351 const AudioDeviceTypeAddrVector& devices) = 0; 352 353 virtual status_t clearDevicesRoleForCapturePreset(audio_source_t audioSource, 354 device_role_t role) = 0; 355 356 virtual status_t getDevicesForRoleAndCapturePreset(audio_source_t audioSource, 357 device_role_t role, 358 AudioDeviceTypeAddrVector &devices) = 0; 359 360 /** 361 * Queries if some kind of spatialization will be performed if the audio playback context 362 * described by the provided arguments is present. 363 * The context is made of: 364 * - The audio attributes describing the playback use case. 365 * - The audio configuration describing the audio format, channels, sampling rate ... 366 * - The devices describing the sink audio device selected for playback. 367 * All arguments are optional and only the specified arguments are used to match against 368 * supported criteria. For instance, supplying no argument will tell if spatialization is 369 * supported or not in general. 370 * @param attr audio attributes describing the playback use case 371 * @param config audio configuration describing the audio format, channels, sampling rate... 372 * @param devices the sink audio device selected for playback 373 * @return true if spatialization is enabled for this context, 374 * false otherwise 375 */ 376 virtual bool canBeSpatialized(const audio_attributes_t *attr, 377 const audio_config_t *config, 378 const AudioDeviceTypeAddrVector &devices) const = 0; 379 380 /** 381 * Opens a specialized spatializer output if supported by the platform. 382 * If several spatializer output profiles exist, the one supporting the sink device 383 * corresponding to the provided audio attributes will be selected. 384 * Only one spatializer output stream can be opened at a time and an error is returned 385 * if one already exists. 386 * @param config audio format, channel mask and sampling rate to be used as the mixer 387 * configuration for the spatializer mixer created. 388 * @param attr audio attributes describing the playback use case that will drive the 389 * sink device selection 390 * @param output the IO handle of the output opened 391 * @return NO_ERROR if an output was opened, INVALID_OPERATION or BAD_VALUE otherwise 392 */ 393 virtual status_t getSpatializerOutput(const audio_config_base_t *config, 394 const audio_attributes_t *attr, 395 audio_io_handle_t *output) = 0; 396 397 /** 398 * Closes a previously opened specialized spatializer output. 399 * @param output the IO handle of the output to close. 400 * @return NO_ERROR if an output was closed, INVALID_OPERATION or BAD_VALUE otherwise 401 */ 402 virtual status_t releaseSpatializerOutput(audio_io_handle_t output) = 0; 403 404 /** 405 * Query how the direct playback is currently supported on the device. 406 * @param attr audio attributes describing the playback use case 407 * @param config audio configuration for the playback 408 * @param directMode out: a set of flags describing how the direct playback is currently 409 * supported on the device 410 * @return NO_ERROR in case of success, DEAD_OBJECT, NO_INIT, BAD_VALUE, PERMISSION_DENIED 411 * in case of error. 412 */ 413 virtual audio_direct_mode_t getDirectPlaybackSupport(const audio_attributes_t *attr, 414 const audio_config_t *config) = 0; 415 416 // retrieves the list of available direct audio profiles for the given audio attributes 417 virtual status_t getDirectProfilesForAttributes(const audio_attributes_t* attr, 418 AudioProfileVector& audioProfiles) = 0; 419 420 virtual status_t getSupportedMixerAttributes( 421 audio_port_handle_t portId, std::vector<audio_mixer_attributes_t>& mixerAttrs) = 0; 422 virtual status_t setPreferredMixerAttributes( 423 const audio_attributes_t* attr, 424 audio_port_handle_t portId, 425 uid_t uid, 426 const audio_mixer_attributes_t* mixerAttributes) = 0; 427 virtual status_t getPreferredMixerAttributes(const audio_attributes_t* attr, 428 audio_port_handle_t portId, 429 audio_mixer_attributes_t* mixerAttributes) = 0; 430 virtual status_t clearPreferredMixerAttributes(const audio_attributes_t* attr, 431 audio_port_handle_t portId, 432 uid_t uid) = 0; 433 }; 434 435 // Audio Policy client Interface 436 class AudioPolicyClientInterface 437 { 438 public: ~AudioPolicyClientInterface()439 virtual ~AudioPolicyClientInterface() {} 440 441 virtual status_t getAudioPolicyConfig(media::AudioPolicyConfig *config) = 0; 442 443 // 444 // Audio HW module functions 445 // 446 447 // loads a HW module. 448 virtual audio_module_handle_t loadHwModule(const char *name) = 0; 449 450 // 451 // Audio output Control functions 452 // 453 454 // opens an audio output with the requested parameters. The parameter values can indicate to 455 // use the default values in case the audio policy manager has no specific requirements for the 456 // output being opened. 457 // When the function returns, the parameter values reflect the actual values used by the audio 458 // hardware output stream. 459 // The audio policy manager can check if the proposed parameters are suitable or not and act 460 // accordingly. 461 virtual status_t openOutput(audio_module_handle_t module, 462 audio_io_handle_t *output, 463 audio_config_t *halConfig, 464 audio_config_base_t *mixerConfig, 465 const sp<DeviceDescriptorBase>& device, 466 uint32_t *latencyMs, 467 audio_output_flags_t flags) = 0; 468 // creates a special output that is duplicated to the two outputs passed as arguments. 469 // The duplication is performed by a special mixer thread in the AudioFlinger. 470 virtual audio_io_handle_t openDuplicateOutput(audio_io_handle_t output1, 471 audio_io_handle_t output2) = 0; 472 // closes the output stream 473 virtual status_t closeOutput(audio_io_handle_t output) = 0; 474 // suspends the output. When an output is suspended, the corresponding audio hardware output 475 // stream is placed in standby and the AudioTracks attached to the mixer thread are still 476 // processed but the output mix is discarded. 477 virtual status_t suspendOutput(audio_io_handle_t output) = 0; 478 // restores a suspended output. 479 virtual status_t restoreOutput(audio_io_handle_t output) = 0; 480 481 // 482 // Audio input Control functions 483 // 484 485 // opens an audio input 486 virtual status_t openInput(audio_module_handle_t module, 487 audio_io_handle_t *input, 488 audio_config_t *config, 489 audio_devices_t *device, 490 const String8& address, 491 audio_source_t source, 492 audio_input_flags_t flags) = 0; 493 // closes an audio input 494 virtual status_t closeInput(audio_io_handle_t input) = 0; 495 // 496 // misc control functions 497 // 498 499 // set a stream volume for a particular output. For the same user setting, a given stream type 500 // can have different volumes 501 // for each output (destination device) it is attached to. 502 virtual status_t setStreamVolume(audio_stream_type_t stream, float volume, 503 audio_io_handle_t output, int delayMs = 0) = 0; 504 505 // function enabling to send proprietary informations directly from audio policy manager to 506 // audio hardware interface. 507 virtual void setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs, 508 int delayMs = 0) = 0; 509 // function enabling to receive proprietary informations directly from audio hardware interface 510 // to audio policy manager. 511 virtual String8 getParameters(audio_io_handle_t ioHandle, const String8& keys) = 0; 512 513 // set down link audio volume. 514 virtual status_t setVoiceVolume(float volume, int delayMs = 0) = 0; 515 516 // move effect to the specified output 517 virtual status_t moveEffects(audio_session_t session, 518 audio_io_handle_t srcOutput, 519 audio_io_handle_t dstOutput) = 0; 520 521 virtual void setEffectSuspended(int effectId, 522 audio_session_t sessionId, 523 bool suspended) = 0; 524 525 /* Create a patch between several source and sink ports */ 526 virtual status_t createAudioPatch(const struct audio_patch *patch, 527 audio_patch_handle_t *handle, 528 int delayMs) = 0; 529 530 /* Release a patch */ 531 virtual status_t releaseAudioPatch(audio_patch_handle_t handle, 532 int delayMs) = 0; 533 534 /* Set audio port configuration */ 535 virtual status_t setAudioPortConfig(const struct audio_port_config *config, int delayMs) = 0; 536 537 virtual void onAudioPortListUpdate() = 0; 538 539 virtual void onAudioPatchListUpdate() = 0; 540 541 virtual void onAudioVolumeGroupChanged(volume_group_t group, int flags) = 0; 542 543 virtual audio_unique_id_t newAudioUniqueId(audio_unique_id_use_t use) = 0; 544 545 virtual void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state) = 0; 546 547 virtual void onRecordingConfigurationUpdate(int event, 548 const record_client_info_t *clientInfo, 549 const audio_config_base_t *clientConfig, 550 std::vector<effect_descriptor_t> clientEffects, 551 const audio_config_base_t *deviceConfig, 552 std::vector<effect_descriptor_t> effects, 553 audio_patch_handle_t patchHandle, 554 audio_source_t source) = 0; 555 556 virtual void onRoutingUpdated() = 0; 557 558 // Used to notify AudioService that an error was encountering when reading 559 // the volume ranges, and that they should be re-initialized 560 virtual void onVolumeRangeInitRequest() = 0; 561 562 // Used to notify the sound trigger module that an audio capture is about to 563 // take place. This should typically result in any active recognition 564 // sessions to be preempted on modules that do not support sound trigger 565 // recognition concurrently with audio capture. 566 virtual void setSoundTriggerCaptureState(bool active) = 0; 567 568 virtual status_t getAudioPort(struct audio_port_v7 *port) = 0; 569 570 virtual status_t updateSecondaryOutputs( 571 const TrackSecondaryOutputsMap& trackSecondaryOutputs) = 0; 572 573 virtual status_t setDeviceConnectedState(const struct audio_port_v7 *port, 574 media::DeviceConnectedState state) = 0; 575 576 virtual status_t invalidateTracks(const std::vector<audio_port_handle_t>& portIds) = 0; 577 }; 578 579 // These are the signatures of createAudioPolicyManager/destroyAudioPolicyManager 580 // methods respectively, expected by AudioPolicyService, needs to be exposed by 581 // libaudiopolicymanagercustom. 582 using CreateAudioPolicyManagerInstance = 583 AudioPolicyInterface* (*)(AudioPolicyClientInterface*); 584 using DestroyAudioPolicyManagerInstance = void (*)(AudioPolicyInterface*); 585 586 } // namespace android 587 588 #endif // ANDROID_AUDIOPOLICY_INTERFACE_H 589