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 #pragma once 18 19 #include <atomic> 20 #include <functional> 21 #include <memory> 22 #include <unordered_set> 23 24 #include <stdint.h> 25 #include <sys/types.h> 26 #include <cutils/config_utils.h> 27 #include <cutils/misc.h> 28 #include <utils/Timers.h> 29 #include <utils/Errors.h> 30 #include <utils/KeyedVector.h> 31 #include <utils/SortedVector.h> 32 #include <media/AudioParameter.h> 33 #include <media/AudioPolicy.h> 34 #include <media/PatchBuilder.h> 35 #include "AudioPolicyInterface.h" 36 37 #include <AudioPolicyManagerInterface.h> 38 #include <AudioPolicyManagerObserver.h> 39 #include <AudioGain.h> 40 #include <AudioPolicyConfig.h> 41 #include <AudioPort.h> 42 #include <AudioPatch.h> 43 #include <AudioProfile.h> 44 #include <DeviceDescriptor.h> 45 #include <IOProfile.h> 46 #include <HwModule.h> 47 #include <AudioInputDescriptor.h> 48 #include <AudioOutputDescriptor.h> 49 #include <AudioPolicyMix.h> 50 #include <EffectDescriptor.h> 51 #include <SoundTriggerSession.h> 52 #include "TypeConverter.h" 53 54 namespace android { 55 56 // ---------------------------------------------------------------------------- 57 58 // Attenuation applied to STRATEGY_SONIFICATION streams when a headset is connected: 6dB 59 #define SONIFICATION_HEADSET_VOLUME_FACTOR_DB (-6) 60 // Min volume for STRATEGY_SONIFICATION streams when limited by music volume: -36dB 61 #define SONIFICATION_HEADSET_VOLUME_MIN_DB (-36) 62 // Max volume difference on A2DP between playing media and STRATEGY_SONIFICATION streams: 12dB 63 #define SONIFICATION_A2DP_MAX_MEDIA_DIFF_DB (12) 64 65 // Time in milliseconds during which we consider that music is still active after a music 66 // track was stopped - see computeVolume() 67 #define SONIFICATION_HEADSET_MUSIC_DELAY 5000 68 69 // Time in milliseconds during witch some streams are muted while the audio path 70 // is switched 71 #define MUTE_TIME_MS 2000 72 73 // multiplication factor applied to output latency when calculating a safe mute delay when 74 // invalidating tracks 75 #define LATENCY_MUTE_FACTOR 4 76 77 #define NUM_TEST_OUTPUTS 5 78 79 #define NUM_VOL_CURVE_KNEES 2 80 81 // Default minimum length allowed for offloading a compressed track 82 // Can be overridden by the audio.offload.min.duration.secs property 83 #define OFFLOAD_DEFAULT_MIN_DURATION_SECS 60 84 85 // ---------------------------------------------------------------------------- 86 // AudioPolicyManager implements audio policy manager behavior common to all platforms. 87 // ---------------------------------------------------------------------------- 88 89 class AudioPolicyManager : public AudioPolicyInterface, public AudioPolicyManagerObserver 90 { 91 92 public: 93 explicit AudioPolicyManager(AudioPolicyClientInterface *clientInterface); 94 virtual ~AudioPolicyManager(); 95 96 // AudioPolicyInterface 97 virtual status_t setDeviceConnectionState(audio_devices_t device, 98 audio_policy_dev_state_t state, 99 const char *device_address, 100 const char *device_name, 101 audio_format_t encodedFormat); 102 virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device, 103 const char *device_address); 104 virtual status_t handleDeviceConfigChange(audio_devices_t device, 105 const char *device_address, 106 const char *device_name, 107 audio_format_t encodedFormat); 108 virtual void setPhoneState(audio_mode_t state); 109 virtual void setForceUse(audio_policy_force_use_t usage, 110 audio_policy_forced_cfg_t config); 111 virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage); 112 113 virtual void setSystemProperty(const char* property, const char* value); 114 virtual status_t initCheck(); 115 virtual audio_io_handle_t getOutput(audio_stream_type_t stream); 116 status_t getOutputForAttr(const audio_attributes_t *attr, 117 audio_io_handle_t *output, 118 audio_session_t session, 119 audio_stream_type_t *stream, 120 uid_t uid, 121 const audio_config_t *config, 122 audio_output_flags_t *flags, 123 audio_port_handle_t *selectedDeviceId, 124 audio_port_handle_t *portId, 125 std::vector<audio_io_handle_t> *secondaryOutputs) override; 126 virtual status_t startOutput(audio_port_handle_t portId); 127 virtual status_t stopOutput(audio_port_handle_t portId); 128 virtual void releaseOutput(audio_port_handle_t portId); 129 virtual status_t getInputForAttr(const audio_attributes_t *attr, 130 audio_io_handle_t *input, 131 audio_unique_id_t riid, 132 audio_session_t session, 133 uid_t uid, 134 const audio_config_base_t *config, 135 audio_input_flags_t flags, 136 audio_port_handle_t *selectedDeviceId, 137 input_type_t *inputType, 138 audio_port_handle_t *portId); 139 140 // indicates to the audio policy manager that the input starts being used. 141 virtual status_t startInput(audio_port_handle_t portId); 142 143 // indicates to the audio policy manager that the input stops being used. 144 virtual status_t stopInput(audio_port_handle_t portId); 145 virtual void releaseInput(audio_port_handle_t portId); 146 virtual void checkCloseInputs(); 147 /** 148 * @brief initStreamVolume: even if the engine volume files provides min and max, keep this 149 * api for compatibility reason. 150 * AudioServer will get the min and max and may overwrite them if: 151 * -using property (highest priority) 152 * -not defined (-1 by convention), case when still using apm volume tables XML files 153 * @param stream to be considered 154 * @param indexMin to set 155 * @param indexMax to set 156 */ 157 virtual void initStreamVolume(audio_stream_type_t stream, int indexMin, int indexMax); 158 virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, 159 int index, 160 audio_devices_t device); 161 virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, 162 int *index, 163 audio_devices_t device); 164 165 virtual status_t setVolumeIndexForAttributes(const audio_attributes_t &attr, 166 int index, 167 audio_devices_t device); 168 virtual status_t getVolumeIndexForAttributes(const audio_attributes_t &attr, 169 int &index, 170 audio_devices_t device); 171 virtual status_t getMaxVolumeIndexForAttributes(const audio_attributes_t &attr, int &index); 172 173 virtual status_t getMinVolumeIndexForAttributes(const audio_attributes_t &attr, int &index); 174 175 status_t setVolumeCurveIndex(int index, 176 audio_devices_t device, 177 IVolumeCurves &volumeCurves); 178 179 status_t getVolumeIndex(const IVolumeCurves &curves, int &index, 180 audio_devices_t device) const; 181 182 // return the strategy corresponding to a given stream type 183 virtual uint32_t getStrategyForStream(audio_stream_type_t stream) 184 { 185 return streamToStrategy(stream); 186 } 187 product_strategy_t streamToStrategy(audio_stream_type_t stream) const 188 { 189 auto attributes = mEngine->getAttributesForStreamType(stream); 190 return mEngine->getProductStrategyForAttributes(attributes); 191 } 192 193 // return the enabled output devices for the given stream type 194 virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream); 195 196 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc = NULL); 197 virtual status_t registerEffect(const effect_descriptor_t *desc, 198 audio_io_handle_t io, 199 uint32_t strategy, 200 int session, 201 int id); 202 virtual status_t unregisterEffect(int id); 203 virtual status_t setEffectEnabled(int id, bool enabled); 204 status_t moveEffectsToIo(const std::vector<int>& ids, audio_io_handle_t io) override; 205 206 virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const; 207 // return whether a stream is playing remotely, override to change the definition of 208 // local/remote playback, used for instance by notification manager to not make 209 // media players lose audio focus when not playing locally 210 // For the base implementation, "remotely" means playing during screen mirroring which 211 // uses an output for playback with a non-empty, non "0" address. 212 virtual bool isStreamActiveRemotely(audio_stream_type_t stream, 213 uint32_t inPastMs = 0) const; 214 215 virtual bool isSourceActive(audio_source_t source) const; 216 217 // helpers for dump(int fd) 218 void dumpManualSurroundFormats(String8 *dst) const; 219 void dump(String8 *dst) const; 220 221 status_t dump(int fd) override; 222 223 status_t setAllowedCapturePolicy(uid_t uid, audio_flags_mask_t capturePolicy) override; 224 virtual bool isOffloadSupported(const audio_offload_info_t& offloadInfo); 225 226 virtual bool isDirectOutputSupported(const audio_config_base_t& config, 227 const audio_attributes_t& attributes); 228 229 virtual status_t listAudioPorts(audio_port_role_t role, 230 audio_port_type_t type, 231 unsigned int *num_ports, 232 struct audio_port *ports, 233 unsigned int *generation); 234 virtual status_t getAudioPort(struct audio_port *port); 235 virtual status_t createAudioPatch(const struct audio_patch *patch, 236 audio_patch_handle_t *handle, 237 uid_t uid); 238 virtual status_t releaseAudioPatch(audio_patch_handle_t handle, 239 uid_t uid); 240 virtual status_t listAudioPatches(unsigned int *num_patches, 241 struct audio_patch *patches, 242 unsigned int *generation); 243 virtual status_t setAudioPortConfig(const struct audio_port_config *config); 244 245 virtual void releaseResourcesForUid(uid_t uid); 246 247 virtual status_t acquireSoundTriggerSession(audio_session_t *session, 248 audio_io_handle_t *ioHandle, 249 audio_devices_t *device); 250 251 virtual status_t releaseSoundTriggerSession(audio_session_t session) 252 { 253 return mSoundTriggerSessions.releaseSession(session); 254 } 255 256 virtual status_t registerPolicyMixes(const Vector<AudioMix>& mixes); 257 virtual status_t unregisterPolicyMixes(Vector<AudioMix> mixes); 258 virtual status_t setUidDeviceAffinities(uid_t uid, 259 const Vector<AudioDeviceTypeAddr>& devices); 260 virtual status_t removeUidDeviceAffinities(uid_t uid); 261 262 virtual status_t startAudioSource(const struct audio_port_config *source, 263 const audio_attributes_t *attributes, 264 audio_port_handle_t *portId, 265 uid_t uid); 266 virtual status_t stopAudioSource(audio_port_handle_t portId); 267 268 virtual status_t setMasterMono(bool mono); 269 virtual status_t getMasterMono(bool *mono); 270 virtual float getStreamVolumeDB( 271 audio_stream_type_t stream, int index, audio_devices_t device); 272 273 virtual status_t getSurroundFormats(unsigned int *numSurroundFormats, 274 audio_format_t *surroundFormats, 275 bool *surroundFormatsEnabled, 276 bool reported); 277 virtual status_t setSurroundFormatEnabled(audio_format_t audioFormat, bool enabled); 278 279 virtual status_t getHwOffloadEncodingFormatsSupportedForA2DP( 280 std::vector<audio_format_t> *formats); 281 282 virtual void setAppState(uid_t uid, app_state_t state); 283 284 virtual bool isHapticPlaybackSupported(); 285 286 virtual status_t listAudioProductStrategies(AudioProductStrategyVector &strategies) 287 { 288 return mEngine->listAudioProductStrategies(strategies); 289 } 290 291 virtual status_t getProductStrategyFromAudioAttributes(const AudioAttributes &aa, 292 product_strategy_t &productStrategy) 293 { 294 productStrategy = mEngine->getProductStrategyForAttributes(aa.getAttributes()); 295 return productStrategy != PRODUCT_STRATEGY_NONE ? NO_ERROR : BAD_VALUE; 296 } 297 298 virtual status_t listAudioVolumeGroups(AudioVolumeGroupVector &groups) 299 { 300 return mEngine->listAudioVolumeGroups(groups); 301 } 302 303 virtual status_t getVolumeGroupFromAudioAttributes(const AudioAttributes &aa, 304 volume_group_t &volumeGroup) 305 { 306 volumeGroup = mEngine->getVolumeGroupForAttributes(aa.getAttributes()); 307 return volumeGroup != VOLUME_GROUP_NONE ? NO_ERROR : BAD_VALUE; 308 } 309 310 protected: 311 // A constructor that allows more fine-grained control over initialization process, 312 // used in automatic tests. 313 AudioPolicyManager(AudioPolicyClientInterface *clientInterface, bool forTesting); 314 315 // These methods should be used when finer control over APM initialization 316 // is needed, e.g. in tests. Must be used in conjunction with the constructor 317 // that only performs fields initialization. The public constructor comprises 318 // these steps in the following sequence: 319 // - field initializing constructor; 320 // - loadConfig; 321 // - initialize. 322 AudioPolicyConfig& getConfig() { return mConfig; } 323 void loadConfig(); 324 status_t initialize(); 325 326 // From AudioPolicyManagerObserver 327 virtual const AudioPatchCollection &getAudioPatches() const 328 { 329 return mAudioPatches; 330 } 331 virtual const SoundTriggerSessionCollection &getSoundTriggerSessionCollection() const 332 { 333 return mSoundTriggerSessions; 334 } 335 virtual const AudioPolicyMixCollection &getAudioPolicyMixCollection() const 336 { 337 return mPolicyMixes; 338 } 339 virtual const SwAudioOutputCollection &getOutputs() const 340 { 341 return mOutputs; 342 } 343 virtual const AudioInputCollection &getInputs() const 344 { 345 return mInputs; 346 } 347 virtual const DeviceVector getAvailableOutputDevices() const 348 { 349 return mAvailableOutputDevices; 350 } 351 virtual const DeviceVector getAvailableInputDevices() const 352 { 353 // legacy and non-legacy remote-submix are managed by the engine, do not filter 354 return mAvailableInputDevices; 355 } 356 virtual const sp<DeviceDescriptor> &getDefaultOutputDevice() const 357 { 358 return mDefaultOutputDevice; 359 } 360 361 std::vector<volume_group_t> getVolumeGroups() const 362 { 363 return mEngine->getVolumeGroups(); 364 } 365 366 VolumeSource toVolumeSource(volume_group_t volumeGroup) const 367 { 368 return static_cast<VolumeSource>(volumeGroup); 369 } 370 VolumeSource toVolumeSource(const audio_attributes_t &attributes) const 371 { 372 return toVolumeSource(mEngine->getVolumeGroupForAttributes(attributes)); 373 } 374 VolumeSource toVolumeSource(audio_stream_type_t stream) const 375 { 376 return toVolumeSource(mEngine->getVolumeGroupForStreamType(stream)); 377 } 378 IVolumeCurves &getVolumeCurves(VolumeSource volumeSource) 379 { 380 auto *curves = mEngine->getVolumeCurvesForVolumeGroup( 381 static_cast<volume_group_t>(volumeSource)); 382 ALOG_ASSERT(curves != nullptr, "No curves for volume source %d", volumeSource); 383 return *curves; 384 } 385 IVolumeCurves &getVolumeCurves(const audio_attributes_t &attr) 386 { 387 auto *curves = mEngine->getVolumeCurvesForAttributes(attr); 388 ALOG_ASSERT(curves != nullptr, "No curves for attributes %s", toString(attr).c_str()); 389 return *curves; 390 } 391 IVolumeCurves &getVolumeCurves(audio_stream_type_t stream) 392 { 393 auto *curves = mEngine->getVolumeCurvesForStreamType(stream); 394 ALOG_ASSERT(curves != nullptr, "No curves for stream %s", toString(stream).c_str()); 395 return *curves; 396 } 397 398 void addOutput(audio_io_handle_t output, const sp<SwAudioOutputDescriptor>& outputDesc); 399 void removeOutput(audio_io_handle_t output); 400 void addInput(audio_io_handle_t input, const sp<AudioInputDescriptor>& inputDesc); 401 402 // change the route of the specified output. Returns the number of ms we have slept to 403 // allow new routing to take effect in certain cases. 404 uint32_t setOutputDevices(const sp<SwAudioOutputDescriptor>& outputDesc, 405 const DeviceVector &device, 406 bool force = false, 407 int delayMs = 0, 408 audio_patch_handle_t *patchHandle = NULL, 409 bool requiresMuteCheck = true); 410 status_t resetOutputDevice(const sp<AudioOutputDescriptor>& outputDesc, 411 int delayMs = 0, 412 audio_patch_handle_t *patchHandle = NULL); 413 status_t setInputDevice(audio_io_handle_t input, 414 const sp<DeviceDescriptor> &device, 415 bool force = false, 416 audio_patch_handle_t *patchHandle = NULL); 417 status_t resetInputDevice(audio_io_handle_t input, 418 audio_patch_handle_t *patchHandle = NULL); 419 420 // compute the actual volume for a given stream according to the requested index and a particular 421 // device 422 virtual float computeVolume(IVolumeCurves &curves, 423 VolumeSource volumeSource, 424 int index, 425 audio_devices_t device); 426 427 // rescale volume index from srcStream within range of dstStream 428 int rescaleVolumeIndex(int srcIndex, 429 VolumeSource fromVolumeSource, 430 VolumeSource toVolumeSource); 431 // check that volume change is permitted, compute and send new volume to audio hardware 432 virtual status_t checkAndSetVolume(IVolumeCurves &curves, 433 VolumeSource volumeSource, int index, 434 const sp<AudioOutputDescriptor>& outputDesc, 435 audio_devices_t device, 436 int delayMs = 0, bool force = false); 437 438 // apply all stream volumes to the specified output and device 439 void applyStreamVolumes(const sp<AudioOutputDescriptor>& outputDesc, 440 audio_devices_t device, int delayMs = 0, bool force = false); 441 442 /** 443 * @brief setStrategyMute Mute or unmute all active clients on the considered output 444 * following the given strategy. 445 * @param strategy to be considered 446 * @param on true for mute, false for unmute 447 * @param outputDesc to be considered 448 * @param delayMs 449 * @param device 450 */ 451 void setStrategyMute(product_strategy_t strategy, 452 bool on, 453 const sp<AudioOutputDescriptor>& outputDesc, 454 int delayMs = 0, 455 audio_devices_t device = AUDIO_DEVICE_NONE); 456 457 /** 458 * @brief setVolumeSourceMute Mute or unmute the volume source on the specified output 459 * @param volumeSource to be muted/unmute (may host legacy streams or by extension set of 460 * audio attributes) 461 * @param on true to mute, false to umute 462 * @param outputDesc on which the client following the volume group shall be muted/umuted 463 * @param delayMs 464 * @param device 465 */ 466 void setVolumeSourceMute(VolumeSource volumeSource, 467 bool on, 468 const sp<AudioOutputDescriptor>& outputDesc, 469 int delayMs = 0, 470 audio_devices_t device = AUDIO_DEVICE_NONE); 471 472 audio_mode_t getPhoneState(); 473 474 // true if device is in a telephony or VoIP call 475 virtual bool isInCall(); 476 // true if given state represents a device in a telephony or VoIP call 477 virtual bool isStateInCall(int state); 478 479 // when a device is connected, checks if an open output can be routed 480 // to this device. If none is open, tries to open one of the available outputs. 481 // Returns an output suitable to this device or 0. 482 // when a device is disconnected, checks if an output is not used any more and 483 // returns its handle if any. 484 // transfers the audio tracks and effects from one output thread to another accordingly. 485 status_t checkOutputsForDevice(const sp<DeviceDescriptor>& device, 486 audio_policy_dev_state_t state, 487 SortedVector<audio_io_handle_t>& outputs); 488 489 status_t checkInputsForDevice(const sp<DeviceDescriptor>& device, 490 audio_policy_dev_state_t state); 491 492 // close an output and its companion duplicating output. 493 void closeOutput(audio_io_handle_t output); 494 495 // close an input. 496 void closeInput(audio_io_handle_t input); 497 498 // runs all the checks required for accomodating changes in devices and outputs 499 // if 'onOutputsChecked' callback is provided, it is executed after the outputs 500 // check via 'checkOutputForAllStrategies'. If the callback returns 'true', 501 // A2DP suspend status is rechecked. 502 void checkForDeviceAndOutputChanges(std::function<bool()> onOutputsChecked = nullptr); 503 504 /** 505 * @brief checkOutputForAttributes checks and if necessary changes outputs used for the 506 * given audio attributes. 507 * must be called every time a condition that affects the output choice for a given 508 * attributes changes: connected device, phone state, force use... 509 * Must be called before updateDevicesAndOutputs() 510 * @param attr to be considered 511 */ 512 void checkOutputForAttributes(const audio_attributes_t &attr); 513 514 bool followsSameRouting(const audio_attributes_t &lAttr, 515 const audio_attributes_t &rAttr) const; 516 517 /** 518 * @brief checkOutputForAllStrategies Same as @see checkOutputForAttributes() 519 * but for a all product strategies in order of priority 520 */ 521 void checkOutputForAllStrategies(); 522 523 // Same as checkOutputForStrategy but for secondary outputs. Make sure if a secondary 524 // output condition changes, the track is properly rerouted 525 void checkSecondaryOutputs(); 526 527 // manages A2DP output suspend/restore according to phone state and BT SCO usage 528 void checkA2dpSuspend(); 529 530 // selects the most appropriate device on output for current state 531 // must be called every time a condition that affects the device choice for a given output is 532 // changed: connected device, phone state, force use, output start, output stop.. 533 // see getDeviceForStrategy() for the use of fromCache parameter 534 DeviceVector getNewOutputDevices(const sp<SwAudioOutputDescriptor>& outputDesc, 535 bool fromCache); 536 537 /** 538 * @brief updateDevicesAndOutputs: updates cache of devices of the engine 539 * must be called every time a condition that affects the device choice is changed: 540 * connected device, phone state, force use... 541 * cached values are used by getOutputDevicesForStream()/getDevicesForAttributes if 542 * parameter fromCache is true. 543 * Must be called after checkOutputForAllStrategies() 544 */ 545 void updateDevicesAndOutputs(); 546 547 // selects the most appropriate device on input for current state 548 sp<DeviceDescriptor> getNewInputDevice(const sp<AudioInputDescriptor>& inputDesc); 549 550 virtual uint32_t getMaxEffectsCpuLoad() 551 { 552 return mEffects.getMaxEffectsCpuLoad(); 553 } 554 555 virtual uint32_t getMaxEffectsMemory() 556 { 557 return mEffects.getMaxEffectsMemory(); 558 } 559 560 SortedVector<audio_io_handle_t> getOutputsForDevices( 561 const DeviceVector &devices, const SwAudioOutputCollection& openOutputs); 562 563 /** 564 * @brief checkDeviceMuteStrategies mute/unmute strategies 565 * using an incompatible device combination. 566 * if muting, wait for the audio in pcm buffer to be drained before proceeding 567 * if unmuting, unmute only after the specified delay 568 * @param outputDesc 569 * @param prevDevice 570 * @param delayMs 571 * @return the number of ms waited 572 */ 573 virtual uint32_t checkDeviceMuteStrategies(const sp<AudioOutputDescriptor>& outputDesc, 574 const DeviceVector &prevDevices, 575 uint32_t delayMs); 576 577 audio_io_handle_t selectOutput(const SortedVector<audio_io_handle_t>& outputs, 578 audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 579 audio_format_t format = AUDIO_FORMAT_INVALID, 580 audio_channel_mask_t channelMask = AUDIO_CHANNEL_NONE, 581 uint32_t samplingRate = 0); 582 // samplingRate, format, channelMask are in/out and so may be modified 583 sp<IOProfile> getInputProfile(const sp<DeviceDescriptor> & device, 584 uint32_t& samplingRate, 585 audio_format_t& format, 586 audio_channel_mask_t& channelMask, 587 audio_input_flags_t flags); 588 /** 589 * @brief getProfileForOutput 590 * @param devices vector of descriptors, may be empty if ignoring the device is required 591 * @param samplingRate 592 * @param format 593 * @param channelMask 594 * @param flags 595 * @param directOnly 596 * @return IOProfile to be used if found, nullptr otherwise 597 */ 598 sp<IOProfile> getProfileForOutput(const DeviceVector &devices, 599 uint32_t samplingRate, 600 audio_format_t format, 601 audio_channel_mask_t channelMask, 602 audio_output_flags_t flags, 603 bool directOnly); 604 605 audio_io_handle_t selectOutputForMusicEffects(); 606 607 virtual status_t addAudioPatch(audio_patch_handle_t handle, const sp<AudioPatch>& patch) 608 { 609 return mAudioPatches.addAudioPatch(handle, patch); 610 } 611 virtual status_t removeAudioPatch(audio_patch_handle_t handle) 612 { 613 return mAudioPatches.removeAudioPatch(handle); 614 } 615 616 bool isPrimaryModule(const sp<HwModule> &module) const 617 { 618 if (module == 0 || !hasPrimaryOutput()) { 619 return false; 620 } 621 return module->getHandle() == mPrimaryOutput->getModuleHandle(); 622 } 623 DeviceVector availablePrimaryOutputDevices() const 624 { 625 if (!hasPrimaryOutput()) { 626 return DeviceVector(); 627 } 628 return mAvailableOutputDevices.filter(mPrimaryOutput->supportedDevices()); 629 } 630 DeviceVector availablePrimaryModuleInputDevices() const 631 { 632 if (!hasPrimaryOutput()) { 633 return DeviceVector(); 634 } 635 return mAvailableInputDevices.getDevicesFromHwModule( 636 mPrimaryOutput->getModuleHandle()); 637 } 638 /** 639 * @brief getFirstDeviceId of the Device Vector 640 * @return if the collection is not empty, it returns the first device Id, 641 * otherwise AUDIO_PORT_HANDLE_NONE 642 */ 643 audio_port_handle_t getFirstDeviceId(const DeviceVector &devices) const 644 { 645 return (devices.size() > 0) ? devices.itemAt(0)->getId() : AUDIO_PORT_HANDLE_NONE; 646 } 647 String8 getFirstDeviceAddress(const DeviceVector &devices) const 648 { 649 return (devices.size() > 0) ? devices.itemAt(0)->address() : String8(""); 650 } 651 652 uint32_t updateCallRouting(const DeviceVector &rxDevices, uint32_t delayMs = 0); 653 sp<AudioPatch> createTelephonyPatch(bool isRx, const sp<DeviceDescriptor> &device, 654 uint32_t delayMs); 655 sp<DeviceDescriptor> findDevice( 656 const DeviceVector& devices, audio_devices_t device) const; 657 audio_devices_t getModuleDeviceTypes( 658 const DeviceVector& devices, const char *moduleId) const; 659 bool isDeviceOfModule(const sp<DeviceDescriptor>& devDesc, const char *moduleId) const; 660 661 status_t startSource(const sp<SwAudioOutputDescriptor>& outputDesc, 662 const sp<TrackClientDescriptor>& client, 663 uint32_t *delayMs); 664 status_t stopSource(const sp<SwAudioOutputDescriptor>& outputDesc, 665 const sp<TrackClientDescriptor>& client); 666 667 void clearAudioPatches(uid_t uid); 668 void clearSessionRoutes(uid_t uid); 669 670 /** 671 * @brief checkStrategyRoute: when an output is beeing rerouted, reconsider each output 672 * that may host a strategy playing on the considered output. 673 * @param ps product strategy that initiated the rerouting 674 * @param ouptutToSkip output that initiated the rerouting 675 */ 676 void checkStrategyRoute(product_strategy_t ps, audio_io_handle_t ouptutToSkip); 677 678 status_t hasPrimaryOutput() const { return mPrimaryOutput != 0; } 679 680 status_t connectAudioSource(const sp<SourceClientDescriptor>& sourceDesc); 681 status_t disconnectAudioSource(const sp<SourceClientDescriptor>& sourceDesc); 682 683 sp<SourceClientDescriptor> getSourceForAttributesOnOutput(audio_io_handle_t output, 684 const audio_attributes_t &attr); 685 686 void cleanUpForDevice(const sp<DeviceDescriptor>& deviceDesc); 687 688 void clearAudioSources(uid_t uid); 689 690 static bool streamsMatchForvolume(audio_stream_type_t stream1, 691 audio_stream_type_t stream2); 692 693 void closeActiveClients(const sp<AudioInputDescriptor>& input); 694 void closeClient(audio_port_handle_t portId); 695 696 const uid_t mUidCached; // AID_AUDIOSERVER 697 AudioPolicyClientInterface *mpClientInterface; // audio policy client interface 698 sp<SwAudioOutputDescriptor> mPrimaryOutput; // primary output descriptor 699 // list of descriptors for outputs currently opened 700 701 SwAudioOutputCollection mOutputs; 702 // copy of mOutputs before setDeviceConnectionState() opens new outputs 703 // reset to mOutputs when updateDevicesAndOutputs() is called. 704 SwAudioOutputCollection mPreviousOutputs; 705 AudioInputCollection mInputs; // list of input descriptors 706 707 DeviceVector mAvailableOutputDevices; // all available output devices 708 DeviceVector mAvailableInputDevices; // all available input devices 709 710 bool mLimitRingtoneVolume; // limit ringtone volume to music volume if headset connected 711 712 float mLastVoiceVolume; // last voice volume value sent to audio HAL 713 bool mA2dpSuspended; // true if A2DP output is suspended 714 715 EffectDescriptorCollection mEffects; // list of registered audio effects 716 sp<DeviceDescriptor> mDefaultOutputDevice; // output device selected by default at boot time 717 HwModuleCollection mHwModules; // contains only modules that have been loaded successfully 718 HwModuleCollection mHwModulesAll; // normally not needed, used during construction and for 719 // dumps 720 721 AudioPolicyConfig mConfig; 722 723 std::atomic<uint32_t> mAudioPortGeneration; 724 725 AudioPatchCollection mAudioPatches; 726 727 SoundTriggerSessionCollection mSoundTriggerSessions; 728 729 sp<AudioPatch> mCallTxPatch; 730 sp<AudioPatch> mCallRxPatch; 731 732 HwAudioOutputCollection mHwOutputs; 733 SourceClientCollection mAudioSources; 734 735 // for supporting "beacon" streams, i.e. streams that only play on speaker, and never 736 // when something other than STREAM_TTS (a.k.a. "Transmitted Through Speaker") is playing 737 enum { 738 STARTING_OUTPUT, 739 STARTING_BEACON, 740 STOPPING_OUTPUT, 741 STOPPING_BEACON 742 }; 743 uint32_t mBeaconMuteRefCount; // ref count for stream that would mute beacon 744 uint32_t mBeaconPlayingRefCount;// ref count for the playing beacon streams 745 bool mBeaconMuted; // has STREAM_TTS been muted 746 bool mTtsOutputAvailable; // true if a dedicated output for TTS stream is available 747 748 bool mMasterMono; // true if we wish to force all outputs to mono 749 AudioPolicyMixCollection mPolicyMixes; // list of registered mixes 750 audio_io_handle_t mMusicEffectOutput; // output selected for music effects 751 752 uint32_t nextAudioPortGeneration(); 753 754 // Audio Policy Engine Interface. 755 AudioPolicyManagerInterface *mEngine; 756 757 // Surround formats that are enabled manually. Taken into account when 758 // "encoded surround" is forced into "manual" mode. 759 std::unordered_set<audio_format_t> mManualSurroundFormats; 760 761 std::unordered_map<uid_t, audio_flags_mask_t> mAllowedCapturePolicies; 762 private: 763 // Add or remove AC3 DTS encodings based on user preferences. 764 void modifySurroundFormats(const sp<DeviceDescriptor>& devDesc, FormatVector *formatsPtr); 765 void modifySurroundChannelMasks(ChannelsVector *channelMasksPtr); 766 767 // Support for Multi-Stream Decoder (MSD) module 768 sp<DeviceDescriptor> getMsdAudioInDevice() const; 769 DeviceVector getMsdAudioOutDevices() const; 770 const AudioPatchCollection getMsdPatches() const; 771 status_t getBestMsdAudioProfileFor(const sp<DeviceDescriptor> &outputDevice, 772 bool hwAvSync, 773 audio_port_config *sourceConfig, 774 audio_port_config *sinkConfig) const; 775 PatchBuilder buildMsdPatch(const sp<DeviceDescriptor> &outputDevice) const; 776 status_t setMsdPatch(const sp<DeviceDescriptor> &outputDevice = nullptr); 777 778 // If any, resolve any "dynamic" fields of an Audio Profiles collection 779 void updateAudioProfiles(const sp<DeviceDescriptor>& devDesc, audio_io_handle_t ioHandle, 780 AudioProfileVector &profiles); 781 782 // Notify the policy client of any change of device state with AUDIO_IO_HANDLE_NONE, 783 // so that the client interprets it as global to audio hardware interfaces. 784 // It can give a chance to HAL implementer to retrieve dynamic capabilities associated 785 // to this device for example. 786 // TODO avoid opening stream to retrieve capabilities of a profile. 787 void broadcastDeviceConnectionState(const sp<DeviceDescriptor> &device, 788 audio_policy_dev_state_t state); 789 790 // updates device caching and output for streams that can influence the 791 // routing of notifications 792 void handleNotificationRoutingForStream(audio_stream_type_t stream); 793 uint32_t curAudioPortGeneration() const { return mAudioPortGeneration; } 794 // internal method, get audio_attributes_t from either a source audio_attributes_t 795 // or audio_stream_type_t, respectively. 796 status_t getAudioAttributes(audio_attributes_t *dstAttr, 797 const audio_attributes_t *srcAttr, 798 audio_stream_type_t srcStream); 799 // internal method, called by getOutputForAttr() and connectAudioSource. 800 status_t getOutputForAttrInt(audio_attributes_t *resultAttr, 801 audio_io_handle_t *output, 802 audio_session_t session, 803 const audio_attributes_t *attr, 804 audio_stream_type_t *stream, 805 uid_t uid, 806 const audio_config_t *config, 807 audio_output_flags_t *flags, 808 audio_port_handle_t *selectedDeviceId, 809 bool *isRequestedDeviceForExclusiveUse, 810 std::vector<sp<SwAudioOutputDescriptor>> *secondaryDescs); 811 // internal method to return the output handle for the given device and format 812 audio_io_handle_t getOutputForDevices( 813 const DeviceVector &devices, 814 audio_session_t session, 815 audio_stream_type_t stream, 816 const audio_config_t *config, 817 audio_output_flags_t *flags, 818 bool forceMutingHaptic = false); 819 820 /** 821 * @brief getInputForDevice selects an input handle for a given input device and 822 * requester context 823 * @param device to be used by requester, selected by policy mix rules or engine 824 * @param session requester session id 825 * @param uid requester uid 826 * @param attributes requester audio attributes (e.g. input source and tags matter) 827 * @param config requester audio configuration (e.g. sample rate, format, channel mask). 828 * @param flags requester input flags 829 * @param policyMix may be null, policy rules to be followed by the requester 830 * @return input io handle aka unique input identifier selected for this device. 831 */ 832 audio_io_handle_t getInputForDevice(const sp<DeviceDescriptor> &device, 833 audio_session_t session, 834 const audio_attributes_t &attributes, 835 const audio_config_base_t *config, 836 audio_input_flags_t flags, 837 const sp<AudioPolicyMix> &policyMix); 838 839 // event is one of STARTING_OUTPUT, STARTING_BEACON, STOPPING_OUTPUT, STOPPING_BEACON 840 // returns 0 if no mute/unmute event happened, the largest latency of the device where 841 // the mute/unmute happened 842 uint32_t handleEventForBeacon(int event); 843 uint32_t setBeaconMute(bool mute); 844 bool isValidAttributes(const audio_attributes_t *paa); 845 846 // Called by setDeviceConnectionState(). 847 status_t setDeviceConnectionStateInt(audio_devices_t deviceType, 848 audio_policy_dev_state_t state, 849 const char *device_address, 850 const char *device_name, 851 audio_format_t encodedFormat); 852 853 void setEngineDeviceConnectionState(const sp<DeviceDescriptor> device, 854 audio_policy_dev_state_t state); 855 856 void updateMono(audio_io_handle_t output) { 857 AudioParameter param; 858 param.addInt(String8(AudioParameter::keyMonoOutput), (int)mMasterMono); 859 mpClientInterface->setParameters(output, param.toString()); 860 } 861 status_t installPatch(const char *caller, 862 audio_patch_handle_t *patchHandle, 863 AudioIODescriptorInterface *ioDescriptor, 864 const struct audio_patch *patch, 865 int delayMs); 866 status_t installPatch(const char *caller, 867 ssize_t index, 868 audio_patch_handle_t *patchHandle, 869 const struct audio_patch *patch, 870 int delayMs, 871 uid_t uid, 872 sp<AudioPatch> *patchDescPtr); 873 874 void cleanUpEffectsForIo(audio_io_handle_t io); 875 }; 876 877 }; 878
