AudioPolicyManager.h revision d46929666d7e4b1cad45afd7dcb883ec4dd2d49f
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 18#include <stdint.h> 19#include <sys/types.h> 20#include <cutils/config_utils.h> 21#include <cutils/misc.h> 22#include <utils/Timers.h> 23#include <utils/Errors.h> 24#include <utils/KeyedVector.h> 25#include <utils/SortedVector.h> 26#include "AudioPolicyInterface.h" 27 28 29namespace android { 30 31// ---------------------------------------------------------------------------- 32 33// Attenuation applied to STRATEGY_SONIFICATION streams when a headset is connected: 6dB 34#define SONIFICATION_HEADSET_VOLUME_FACTOR 0.5 35// Min volume for STRATEGY_SONIFICATION streams when limited by music volume: -36dB 36#define SONIFICATION_HEADSET_VOLUME_MIN 0.016 37// Time in milliseconds during which we consider that music is still active after a music 38// track was stopped - see computeVolume() 39#define SONIFICATION_HEADSET_MUSIC_DELAY 5000 40// Time in milliseconds after media stopped playing during which we consider that the 41// sonification should be as unobtrusive as during the time media was playing. 42#define SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY 5000 43// Time in milliseconds during witch some streams are muted while the audio path 44// is switched 45#define MUTE_TIME_MS 2000 46 47#define NUM_TEST_OUTPUTS 5 48 49#define NUM_VOL_CURVE_KNEES 2 50 51// Default minimum length allowed for offloading a compressed track 52// Can be overridden by the audio.offload.min.duration.secs property 53#define OFFLOAD_DEFAULT_MIN_DURATION_SECS 60 54 55// ---------------------------------------------------------------------------- 56// AudioPolicyManager implements audio policy manager behavior common to all platforms. 57// ---------------------------------------------------------------------------- 58 59class AudioPolicyManager: public AudioPolicyInterface 60#ifdef AUDIO_POLICY_TEST 61 , public Thread 62#endif //AUDIO_POLICY_TEST 63{ 64 65public: 66 AudioPolicyManager(AudioPolicyClientInterface *clientInterface); 67 virtual ~AudioPolicyManager(); 68 69 // AudioPolicyInterface 70 virtual status_t setDeviceConnectionState(audio_devices_t device, 71 audio_policy_dev_state_t state, 72 const char *device_address); 73 virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device, 74 const char *device_address); 75 virtual void setPhoneState(audio_mode_t state); 76 virtual void setForceUse(audio_policy_force_use_t usage, 77 audio_policy_forced_cfg_t config); 78 virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage); 79 virtual void setSystemProperty(const char* property, const char* value); 80 virtual status_t initCheck(); 81 virtual audio_io_handle_t getOutput(audio_stream_type_t stream, 82 uint32_t samplingRate, 83 audio_format_t format, 84 audio_channel_mask_t channelMask, 85 audio_output_flags_t flags, 86 const audio_offload_info_t *offloadInfo); 87 virtual status_t startOutput(audio_io_handle_t output, 88 audio_stream_type_t stream, 89 int session = 0); 90 virtual status_t stopOutput(audio_io_handle_t output, 91 audio_stream_type_t stream, 92 int session = 0); 93 virtual void releaseOutput(audio_io_handle_t output); 94 virtual audio_io_handle_t getInput(audio_source_t inputSource, 95 uint32_t samplingRate, 96 audio_format_t format, 97 audio_channel_mask_t channelMask, 98 audio_in_acoustics_t acoustics); 99 100 // indicates to the audio policy manager that the input starts being used. 101 virtual status_t startInput(audio_io_handle_t input); 102 103 // indicates to the audio policy manager that the input stops being used. 104 virtual status_t stopInput(audio_io_handle_t input); 105 virtual void releaseInput(audio_io_handle_t input); 106 virtual void closeAllInputs(); 107 virtual void initStreamVolume(audio_stream_type_t stream, 108 int indexMin, 109 int indexMax); 110 virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, 111 int index, 112 audio_devices_t device); 113 virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, 114 int *index, 115 audio_devices_t device); 116 117 // return the strategy corresponding to a given stream type 118 virtual uint32_t getStrategyForStream(audio_stream_type_t stream); 119 120 // return the enabled output devices for the given stream type 121 virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream); 122 123 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc = NULL); 124 virtual status_t registerEffect(const effect_descriptor_t *desc, 125 audio_io_handle_t io, 126 uint32_t strategy, 127 int session, 128 int id); 129 virtual status_t unregisterEffect(int id); 130 virtual status_t setEffectEnabled(int id, bool enabled); 131 132 virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const; 133 // return whether a stream is playing remotely, override to change the definition of 134 // local/remote playback, used for instance by notification manager to not make 135 // media players lose audio focus when not playing locally 136 virtual bool isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0) const; 137 virtual bool isSourceActive(audio_source_t source) const; 138 139 virtual status_t dump(int fd); 140 141 virtual bool isOffloadSupported(const audio_offload_info_t& offloadInfo); 142 143protected: 144 145 enum routing_strategy { 146 STRATEGY_MEDIA, 147 STRATEGY_PHONE, 148 STRATEGY_SONIFICATION, 149 STRATEGY_SONIFICATION_RESPECTFUL, 150 STRATEGY_DTMF, 151 STRATEGY_ENFORCED_AUDIBLE, 152 NUM_STRATEGIES 153 }; 154 155 // 4 points to define the volume attenuation curve, each characterized by the volume 156 // index (from 0 to 100) at which they apply, and the attenuation in dB at that index. 157 // we use 100 steps to avoid rounding errors when computing the volume in volIndexToAmpl() 158 159 enum { VOLMIN = 0, VOLKNEE1 = 1, VOLKNEE2 = 2, VOLMAX = 3, VOLCNT = 4}; 160 161 class VolumeCurvePoint 162 { 163 public: 164 int mIndex; 165 float mDBAttenuation; 166 }; 167 168 // device categories used for volume curve management. 169 enum device_category { 170 DEVICE_CATEGORY_HEADSET, 171 DEVICE_CATEGORY_SPEAKER, 172 DEVICE_CATEGORY_EARPIECE, 173 DEVICE_CATEGORY_CNT 174 }; 175 176 class IOProfile; 177 178 class DeviceDescriptor: public RefBase 179 { 180 public: 181 DeviceDescriptor(audio_devices_t type, String8 address, 182 audio_channel_mask_t channelMask) : 183 mType(type), mAddress(address), 184 mChannelMask(channelMask), mId(0) {} 185 186 DeviceDescriptor(audio_devices_t type) : 187 mType(type), mAddress(""), 188 mChannelMask(0), mId(0) {} 189 190 status_t dump(int fd, int spaces) const; 191 static void dumpHeader(int fd, int spaces); 192 193 bool equals(const sp<DeviceDescriptor>& other) const; 194 195 audio_devices_t mType; 196 String8 mAddress; 197 audio_channel_mask_t mChannelMask; 198 uint32_t mId; 199 }; 200 201 class DeviceVector : public SortedVector< sp<DeviceDescriptor> > 202 { 203 public: 204 DeviceVector() : SortedVector(), mTypes(AUDIO_DEVICE_NONE) {} 205 206 ssize_t add(const sp<DeviceDescriptor>& item); 207 ssize_t remove(const sp<DeviceDescriptor>& item); 208 ssize_t indexOf(const sp<DeviceDescriptor>& item) const; 209 210 audio_devices_t types() const { return mTypes; } 211 212 void loadDevicesFromType(audio_devices_t types); 213 214 private: 215 void refreshTypes(); 216 audio_devices_t mTypes; 217 }; 218 219 class HwModule { 220 public: 221 HwModule(const char *name); 222 ~HwModule(); 223 224 void dump(int fd); 225 226 const char *const mName; // base name of the audio HW module (primary, a2dp ...) 227 audio_module_handle_t mHandle; 228 Vector <IOProfile *> mOutputProfiles; // output profiles exposed by this module 229 Vector <IOProfile *> mInputProfiles; // input profiles exposed by this module 230 }; 231 232 // the IOProfile class describes the capabilities of an output or input stream. 233 // It is currently assumed that all combination of listed parameters are supported. 234 // It is used by the policy manager to determine if an output or input is suitable for 235 // a given use case, open/close it accordingly and connect/disconnect audio tracks 236 // to/from it. 237 class IOProfile 238 { 239 public: 240 IOProfile(HwModule *module); 241 ~IOProfile(); 242 243 bool isCompatibleProfile(audio_devices_t device, 244 uint32_t samplingRate, 245 audio_format_t format, 246 audio_channel_mask_t channelMask, 247 audio_output_flags_t flags) const; 248 249 void dump(int fd); 250 void log(); 251 252 // by convention, "0' in the first entry in mSamplingRates, mChannelMasks or mFormats 253 // indicates the supported parameters should be read from the output stream 254 // after it is opened for the first time 255 Vector <uint32_t> mSamplingRates; // supported sampling rates 256 Vector <audio_channel_mask_t> mChannelMasks; // supported channel masks 257 Vector <audio_format_t> mFormats; // supported audio formats 258 DeviceVector mSupportedDevices; // supported devices 259 // (devices this output can be routed to) 260 audio_output_flags_t mFlags; // attribute flags (e.g primary output, 261 // direct output...). For outputs only. 262 HwModule *mModule; // audio HW module exposing this I/O stream 263 }; 264 265 // default volume curve 266 static const VolumeCurvePoint sDefaultVolumeCurve[AudioPolicyManager::VOLCNT]; 267 // default volume curve for media strategy 268 static const VolumeCurvePoint sDefaultMediaVolumeCurve[AudioPolicyManager::VOLCNT]; 269 // volume curve for media strategy on speakers 270 static const VolumeCurvePoint sSpeakerMediaVolumeCurve[AudioPolicyManager::VOLCNT]; 271 // volume curve for sonification strategy on speakers 272 static const VolumeCurvePoint sSpeakerSonificationVolumeCurve[AudioPolicyManager::VOLCNT]; 273 static const VolumeCurvePoint sSpeakerSonificationVolumeCurveDrc[AudioPolicyManager::VOLCNT]; 274 static const VolumeCurvePoint sDefaultSystemVolumeCurve[AudioPolicyManager::VOLCNT]; 275 static const VolumeCurvePoint sDefaultSystemVolumeCurveDrc[AudioPolicyManager::VOLCNT]; 276 static const VolumeCurvePoint sHeadsetSystemVolumeCurve[AudioPolicyManager::VOLCNT]; 277 static const VolumeCurvePoint sDefaultVoiceVolumeCurve[AudioPolicyManager::VOLCNT]; 278 static const VolumeCurvePoint sSpeakerVoiceVolumeCurve[AudioPolicyManager::VOLCNT]; 279 // default volume curves per stream and device category. See initializeVolumeCurves() 280 static const VolumeCurvePoint *sVolumeProfiles[AUDIO_STREAM_CNT][DEVICE_CATEGORY_CNT]; 281 282 // descriptor for audio outputs. Used to maintain current configuration of each opened audio output 283 // and keep track of the usage of this output by each audio stream type. 284 class AudioOutputDescriptor 285 { 286 public: 287 AudioOutputDescriptor(const IOProfile *profile); 288 289 status_t dump(int fd); 290 291 audio_devices_t device() const; 292 void changeRefCount(audio_stream_type_t stream, int delta); 293 294 bool isDuplicated() const { return (mOutput1 != NULL && mOutput2 != NULL); } 295 audio_devices_t supportedDevices(); 296 uint32_t latency(); 297 bool sharesHwModuleWith(const AudioOutputDescriptor *outputDesc); 298 bool isActive(uint32_t inPastMs = 0) const; 299 bool isStreamActive(audio_stream_type_t stream, 300 uint32_t inPastMs = 0, 301 nsecs_t sysTime = 0) const; 302 bool isStrategyActive(routing_strategy strategy, 303 uint32_t inPastMs = 0, 304 nsecs_t sysTime = 0) const; 305 306 audio_io_handle_t mId; // output handle 307 uint32_t mSamplingRate; // 308 audio_format_t mFormat; // 309 audio_channel_mask_t mChannelMask; // output configuration 310 uint32_t mLatency; // 311 audio_output_flags_t mFlags; // 312 audio_devices_t mDevice; // current device this output is routed to 313 uint32_t mRefCount[AUDIO_STREAM_CNT]; // number of streams of each type using this output 314 nsecs_t mStopTime[AUDIO_STREAM_CNT]; 315 AudioOutputDescriptor *mOutput1; // used by duplicated outputs: first output 316 AudioOutputDescriptor *mOutput2; // used by duplicated outputs: second output 317 float mCurVolume[AUDIO_STREAM_CNT]; // current stream volume 318 int mMuteCount[AUDIO_STREAM_CNT]; // mute request counter 319 const IOProfile *mProfile; // I/O profile this output derives from 320 bool mStrategyMutedByDevice[NUM_STRATEGIES]; // strategies muted because of incompatible 321 // device selection. See checkDeviceMuteStrategies() 322 uint32_t mDirectOpenCount; // number of clients using this output (direct outputs only) 323 }; 324 325 // descriptor for audio inputs. Used to maintain current configuration of each opened audio input 326 // and keep track of the usage of this input. 327 class AudioInputDescriptor 328 { 329 public: 330 AudioInputDescriptor(const IOProfile *profile); 331 332 status_t dump(int fd); 333 334 audio_io_handle_t mId; // input handle 335 uint32_t mSamplingRate; // 336 audio_format_t mFormat; // input configuration 337 audio_channel_mask_t mChannelMask; // 338 audio_devices_t mDevice; // current device this input is routed to 339 uint32_t mRefCount; // number of AudioRecord clients using this output 340 audio_source_t mInputSource; // input source selected by application (mediarecorder.h) 341 const IOProfile *mProfile; // I/O profile this output derives from 342 }; 343 344 // stream descriptor used for volume control 345 class StreamDescriptor 346 { 347 public: 348 StreamDescriptor(); 349 350 int getVolumeIndex(audio_devices_t device); 351 void dump(int fd); 352 353 int mIndexMin; // min volume index 354 int mIndexMax; // max volume index 355 KeyedVector<audio_devices_t, int> mIndexCur; // current volume index per device 356 bool mCanBeMuted; // true is the stream can be muted 357 358 const VolumeCurvePoint *mVolumeCurve[DEVICE_CATEGORY_CNT]; 359 }; 360 361 // stream descriptor used for volume control 362 class EffectDescriptor 363 { 364 public: 365 366 status_t dump(int fd); 367 368 int mIo; // io the effect is attached to 369 routing_strategy mStrategy; // routing strategy the effect is associated to 370 int mSession; // audio session the effect is on 371 effect_descriptor_t mDesc; // effect descriptor 372 bool mEnabled; // enabled state: CPU load being used or not 373 }; 374 375 void addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc); 376 void addInput(audio_io_handle_t id, AudioInputDescriptor *inputDesc); 377 378 // return the strategy corresponding to a given stream type 379 static routing_strategy getStrategy(audio_stream_type_t stream); 380 381 // return appropriate device for streams handled by the specified strategy according to current 382 // phone state, connected devices... 383 // if fromCache is true, the device is returned from mDeviceForStrategy[], 384 // otherwise it is determine by current state 385 // (device connected,phone state, force use, a2dp output...) 386 // This allows to: 387 // 1 speed up process when the state is stable (when starting or stopping an output) 388 // 2 access to either current device selection (fromCache == true) or 389 // "future" device selection (fromCache == false) when called from a context 390 // where conditions are changing (setDeviceConnectionState(), setPhoneState()...) AND 391 // before updateDevicesAndOutputs() is called. 392 virtual audio_devices_t getDeviceForStrategy(routing_strategy strategy, 393 bool fromCache); 394 395 // change the route of the specified output. Returns the number of ms we have slept to 396 // allow new routing to take effect in certain cases. 397 uint32_t setOutputDevice(audio_io_handle_t output, 398 audio_devices_t device, 399 bool force = false, 400 int delayMs = 0); 401 402 // select input device corresponding to requested audio source 403 virtual audio_devices_t getDeviceForInputSource(audio_source_t inputSource); 404 405 // return io handle of active input or 0 if no input is active 406 // Only considers inputs from physical devices (e.g. main mic, headset mic) when 407 // ignoreVirtualInputs is true. 408 audio_io_handle_t getActiveInput(bool ignoreVirtualInputs = true); 409 410 // initialize volume curves for each strategy and device category 411 void initializeVolumeCurves(); 412 413 // compute the actual volume for a given stream according to the requested index and a particular 414 // device 415 virtual float computeVolume(audio_stream_type_t stream, int index, 416 audio_io_handle_t output, audio_devices_t device); 417 418 // check that volume change is permitted, compute and send new volume to audio hardware 419 status_t checkAndSetVolume(audio_stream_type_t stream, int index, audio_io_handle_t output, 420 audio_devices_t device, int delayMs = 0, bool force = false); 421 422 // apply all stream volumes to the specified output and device 423 void applyStreamVolumes(audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false); 424 425 // Mute or unmute all streams handled by the specified strategy on the specified output 426 void setStrategyMute(routing_strategy strategy, 427 bool on, 428 audio_io_handle_t output, 429 int delayMs = 0, 430 audio_devices_t device = (audio_devices_t)0); 431 432 // Mute or unmute the stream on the specified output 433 void setStreamMute(audio_stream_type_t stream, 434 bool on, 435 audio_io_handle_t output, 436 int delayMs = 0, 437 audio_devices_t device = (audio_devices_t)0); 438 439 // handle special cases for sonification strategy while in call: mute streams or replace by 440 // a special tone in the device used for communication 441 void handleIncallSonification(audio_stream_type_t stream, bool starting, bool stateChange); 442 443 // true if device is in a telephony or VoIP call 444 virtual bool isInCall(); 445 446 // true if given state represents a device in a telephony or VoIP call 447 virtual bool isStateInCall(int state); 448 449 // when a device is connected, checks if an open output can be routed 450 // to this device. If none is open, tries to open one of the available outputs. 451 // Returns an output suitable to this device or 0. 452 // when a device is disconnected, checks if an output is not used any more and 453 // returns its handle if any. 454 // transfers the audio tracks and effects from one output thread to another accordingly. 455 status_t checkOutputsForDevice(audio_devices_t device, 456 audio_policy_dev_state_t state, 457 SortedVector<audio_io_handle_t>& outputs, 458 const String8 address); 459 460 status_t checkInputsForDevice(audio_devices_t device, 461 audio_policy_dev_state_t state, 462 SortedVector<audio_io_handle_t>& inputs, 463 const String8 address); 464 465 // close an output and its companion duplicating output. 466 void closeOutput(audio_io_handle_t output); 467 468 // checks and if necessary changes outputs used for all strategies. 469 // must be called every time a condition that affects the output choice for a given strategy 470 // changes: connected device, phone state, force use... 471 // Must be called before updateDevicesAndOutputs() 472 void checkOutputForStrategy(routing_strategy strategy); 473 474 // Same as checkOutputForStrategy() but for a all strategies in order of priority 475 void checkOutputForAllStrategies(); 476 477 // manages A2DP output suspend/restore according to phone state and BT SCO usage 478 void checkA2dpSuspend(); 479 480 // returns the A2DP output handle if it is open or 0 otherwise 481 audio_io_handle_t getA2dpOutput(); 482 483 // selects the most appropriate device on output for current state 484 // must be called every time a condition that affects the device choice for a given output is 485 // changed: connected device, phone state, force use, output start, output stop.. 486 // see getDeviceForStrategy() for the use of fromCache parameter 487 488 audio_devices_t getNewDevice(audio_io_handle_t output, bool fromCache); 489 // updates cache of device used by all strategies (mDeviceForStrategy[]) 490 // must be called every time a condition that affects the device choice for a given strategy is 491 // changed: connected device, phone state, force use... 492 // cached values are used by getDeviceForStrategy() if parameter fromCache is true. 493 // Must be called after checkOutputForAllStrategies() 494 495 void updateDevicesAndOutputs(); 496 497 virtual uint32_t getMaxEffectsCpuLoad(); 498 virtual uint32_t getMaxEffectsMemory(); 499#ifdef AUDIO_POLICY_TEST 500 virtual bool threadLoop(); 501 void exit(); 502 int testOutputIndex(audio_io_handle_t output); 503#endif //AUDIO_POLICY_TEST 504 505 status_t setEffectEnabled(EffectDescriptor *pDesc, bool enabled); 506 507 // returns the category the device belongs to with regard to volume curve management 508 static device_category getDeviceCategory(audio_devices_t device); 509 510 // extract one device relevant for volume control from multiple device selection 511 static audio_devices_t getDeviceForVolume(audio_devices_t device); 512 513 SortedVector<audio_io_handle_t> getOutputsForDevice(audio_devices_t device, 514 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> openOutputs); 515 bool vectorsEqual(SortedVector<audio_io_handle_t>& outputs1, 516 SortedVector<audio_io_handle_t>& outputs2); 517 518 // mute/unmute strategies using an incompatible device combination 519 // if muting, wait for the audio in pcm buffer to be drained before proceeding 520 // if unmuting, unmute only after the specified delay 521 // Returns the number of ms waited 522 uint32_t checkDeviceMuteStrategies(AudioOutputDescriptor *outputDesc, 523 audio_devices_t prevDevice, 524 uint32_t delayMs); 525 526 audio_io_handle_t selectOutput(const SortedVector<audio_io_handle_t>& outputs, 527 audio_output_flags_t flags); 528 IOProfile *getInputProfile(audio_devices_t device, 529 uint32_t samplingRate, 530 audio_format_t format, 531 audio_channel_mask_t channelMask); 532 IOProfile *getProfileForDirectOutput(audio_devices_t device, 533 uint32_t samplingRate, 534 audio_format_t format, 535 audio_channel_mask_t channelMask, 536 audio_output_flags_t flags); 537 538 audio_io_handle_t selectOutputForEffects(const SortedVector<audio_io_handle_t>& outputs); 539 540 bool isNonOffloadableEffectEnabled(); 541 542 // 543 // Audio policy configuration file parsing (audio_policy.conf) 544 // 545 static uint32_t stringToEnum(const struct StringToEnum *table, 546 size_t size, 547 const char *name); 548 static const char *enumToString(const struct StringToEnum *table, 549 size_t size, 550 uint32_t value); 551 static bool stringToBool(const char *value); 552 static audio_output_flags_t parseFlagNames(char *name); 553 static audio_devices_t parseDeviceNames(char *name); 554 void loadSamplingRates(char *name, IOProfile *profile); 555 void loadFormats(char *name, IOProfile *profile); 556 void loadOutChannels(char *name, IOProfile *profile); 557 void loadInChannels(char *name, IOProfile *profile); 558 status_t loadOutput(cnode *root, HwModule *module); 559 status_t loadInput(cnode *root, HwModule *module); 560 void loadHwModule(cnode *root); 561 void loadHwModules(cnode *root); 562 void loadGlobalConfig(cnode *root); 563 status_t loadAudioPolicyConfig(const char *path); 564 void defaultAudioPolicyConfig(void); 565 566 567 AudioPolicyClientInterface *mpClientInterface; // audio policy client interface 568 audio_io_handle_t mPrimaryOutput; // primary output handle 569 // list of descriptors for outputs currently opened 570 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mOutputs; 571 // copy of mOutputs before setDeviceConnectionState() opens new outputs 572 // reset to mOutputs when updateDevicesAndOutputs() is called. 573 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mPreviousOutputs; 574 DefaultKeyedVector<audio_io_handle_t, AudioInputDescriptor *> mInputs; // list of input descriptors 575 DeviceVector mAvailableOutputDevices; // bit field of all available output devices 576 DeviceVector mAvailableInputDevices; // bit field of all available input devices 577 // without AUDIO_DEVICE_BIT_IN to allow direct bit 578 // field comparisons 579 int mPhoneState; // current phone state 580 audio_policy_forced_cfg_t mForceUse[AUDIO_POLICY_FORCE_USE_CNT]; // current forced use configuration 581 582 StreamDescriptor mStreams[AUDIO_STREAM_CNT]; // stream descriptors for volume control 583 bool mLimitRingtoneVolume; // limit ringtone volume to music volume if headset connected 584 audio_devices_t mDeviceForStrategy[NUM_STRATEGIES]; 585 float mLastVoiceVolume; // last voice volume value sent to audio HAL 586 587 // Maximum CPU load allocated to audio effects in 0.1 MIPS (ARMv5TE, 0 WS memory) units 588 static const uint32_t MAX_EFFECTS_CPU_LOAD = 1000; 589 // Maximum memory allocated to audio effects in KB 590 static const uint32_t MAX_EFFECTS_MEMORY = 512; 591 uint32_t mTotalEffectsCpuLoad; // current CPU load used by effects 592 uint32_t mTotalEffectsMemory; // current memory used by effects 593 KeyedVector<int, EffectDescriptor *> mEffects; // list of registered audio effects 594 bool mA2dpSuspended; // true if A2DP output is suspended 595 sp<DeviceDescriptor> mDefaultOutputDevice; // output device selected by default at boot time 596 bool mSpeakerDrcEnabled;// true on devices that use DRC on the DEVICE_CATEGORY_SPEAKER path 597 // to boost soft sounds, used to adjust volume curves accordingly 598 599 Vector <HwModule *> mHwModules; 600 volatile int32_t mNextUniqueId; 601 602#ifdef AUDIO_POLICY_TEST 603 Mutex mLock; 604 Condition mWaitWorkCV; 605 606 int mCurOutput; 607 bool mDirectOutput; 608 audio_io_handle_t mTestOutputs[NUM_TEST_OUTPUTS]; 609 int mTestInput; 610 uint32_t mTestDevice; 611 uint32_t mTestSamplingRate; 612 uint32_t mTestFormat; 613 uint32_t mTestChannels; 614 uint32_t mTestLatencyMs; 615#endif //AUDIO_POLICY_TEST 616 617private: 618 static float volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc, 619 int indexInUi); 620 // updates device caching and output for streams that can influence the 621 // routing of notifications 622 void handleNotificationRoutingForStream(audio_stream_type_t stream); 623 static bool isVirtualInputDevice(audio_devices_t device); 624 uint32_t nextUniqueId(); 625 // converts device address to string sent to audio HAL via setParameters 626 static String8 addressToParameter(audio_devices_t device, const String8 address); 627}; 628 629}; 630