AudioPolicyManager.h revision 1b512c05f46465a7b1a1d69f82937d7199d5d926
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 initStreamVolume(audio_stream_type_t stream, 107 int indexMin, 108 int indexMax); 109 virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, 110 int index, 111 audio_devices_t device); 112 virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, 113 int *index, 114 audio_devices_t device); 115 116 // return the strategy corresponding to a given stream type 117 virtual uint32_t getStrategyForStream(audio_stream_type_t stream); 118 119 // return the enabled output devices for the given stream type 120 virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream); 121 122 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc = NULL); 123 virtual status_t registerEffect(const effect_descriptor_t *desc, 124 audio_io_handle_t io, 125 uint32_t strategy, 126 int session, 127 int id); 128 virtual status_t unregisterEffect(int id); 129 virtual status_t setEffectEnabled(int id, bool enabled); 130 131 virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const; 132 // return whether a stream is playing remotely, override to change the definition of 133 // local/remote playback, used for instance by notification manager to not make 134 // media players lose audio focus when not playing locally 135 virtual bool isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0) const; 136 virtual bool isSourceActive(audio_source_t source) const; 137 138 virtual status_t dump(int fd); 139 140 virtual bool isOffloadSupported(const audio_offload_info_t& offloadInfo); 141 142protected: 143 144 enum routing_strategy { 145 STRATEGY_MEDIA, 146 STRATEGY_PHONE, 147 STRATEGY_SONIFICATION, 148 STRATEGY_SONIFICATION_RESPECTFUL, 149 STRATEGY_DTMF, 150 STRATEGY_ENFORCED_AUDIBLE, 151 NUM_STRATEGIES 152 }; 153 154 // 4 points to define the volume attenuation curve, each characterized by the volume 155 // index (from 0 to 100) at which they apply, and the attenuation in dB at that index. 156 // we use 100 steps to avoid rounding errors when computing the volume in volIndexToAmpl() 157 158 enum { VOLMIN = 0, VOLKNEE1 = 1, VOLKNEE2 = 2, VOLMAX = 3, VOLCNT = 4}; 159 160 class VolumeCurvePoint 161 { 162 public: 163 int mIndex; 164 float mDBAttenuation; 165 }; 166 167 // device categories used for volume curve management. 168 enum device_category { 169 DEVICE_CATEGORY_HEADSET, 170 DEVICE_CATEGORY_SPEAKER, 171 DEVICE_CATEGORY_EARPIECE, 172 DEVICE_CATEGORY_CNT 173 }; 174 175 class IOProfile; 176 177 class DeviceDescriptor: public RefBase 178 { 179 public: 180 DeviceDescriptor(audio_devices_t type, String8 address, 181 audio_channel_mask_t channelMask) : 182 mType(type), mAddress(address), 183 mChannelMask(channelMask), mId(0) {} 184 185 DeviceDescriptor(audio_devices_t type) : 186 mType(type), mAddress(""), 187 mChannelMask(AUDIO_CHANNEL_NONE), mId(0) {} 188 189 status_t dump(int fd, int spaces) const; 190 static void dumpHeader(int fd, int spaces); 191 192 bool equals(const sp<DeviceDescriptor>& other) const; 193 194 audio_devices_t mType; 195 String8 mAddress; 196 audio_channel_mask_t mChannelMask; 197 uint32_t mId; 198 }; 199 200 class DeviceVector : public SortedVector< sp<DeviceDescriptor> > 201 { 202 public: 203 DeviceVector() : SortedVector(), mTypes(AUDIO_DEVICE_NONE) {} 204 205 ssize_t add(const sp<DeviceDescriptor>& item); 206 ssize_t remove(const sp<DeviceDescriptor>& item); 207 ssize_t indexOf(const sp<DeviceDescriptor>& item) const; 208 209 audio_devices_t types() const { return mTypes; } 210 211 void loadDevicesFromType(audio_devices_t types); 212 213 private: 214 void refreshTypes(); 215 audio_devices_t mTypes; 216 }; 217 218 class HwModule { 219 public: 220 HwModule(const char *name); 221 ~HwModule(); 222 223 void dump(int fd); 224 225 const char *const mName; // base name of the audio HW module (primary, a2dp ...) 226 audio_module_handle_t mHandle; 227 Vector <IOProfile *> mOutputProfiles; // output profiles exposed by this module 228 Vector <IOProfile *> mInputProfiles; // input profiles exposed by this module 229 }; 230 231 // the IOProfile class describes the capabilities of an output or input stream. 232 // It is currently assumed that all combination of listed parameters are supported. 233 // It is used by the policy manager to determine if an output or input is suitable for 234 // a given use case, open/close it accordingly and connect/disconnect audio tracks 235 // to/from it. 236 class IOProfile 237 { 238 public: 239 IOProfile(HwModule *module); 240 ~IOProfile(); 241 242 bool isCompatibleProfile(audio_devices_t device, 243 uint32_t samplingRate, 244 audio_format_t format, 245 audio_channel_mask_t channelMask, 246 audio_output_flags_t flags) const; 247 248 void dump(int fd); 249 250 // by convention, "0' in the first entry in mSamplingRates, mChannelMasks or mFormats 251 // indicates the supported parameters should be read from the output stream 252 // after it is opened for the first time 253 Vector <uint32_t> mSamplingRates; // supported sampling rates 254 Vector <audio_channel_mask_t> mChannelMasks; // supported channel masks 255 Vector <audio_format_t> mFormats; // supported audio formats 256 DeviceVector mSupportedDevices; // supported devices 257 // (devices this output can be routed to) 258 audio_output_flags_t mFlags; // attribute flags (e.g primary output, 259 // direct output...). For outputs only. 260 HwModule *mModule; // audio HW module exposing this I/O stream 261 }; 262 263 // default volume curve 264 static const VolumeCurvePoint sDefaultVolumeCurve[AudioPolicyManager::VOLCNT]; 265 // default volume curve for media strategy 266 static const VolumeCurvePoint sDefaultMediaVolumeCurve[AudioPolicyManager::VOLCNT]; 267 // volume curve for media strategy on speakers 268 static const VolumeCurvePoint sSpeakerMediaVolumeCurve[AudioPolicyManager::VOLCNT]; 269 // volume curve for sonification strategy on speakers 270 static const VolumeCurvePoint sSpeakerSonificationVolumeCurve[AudioPolicyManager::VOLCNT]; 271 static const VolumeCurvePoint sSpeakerSonificationVolumeCurveDrc[AudioPolicyManager::VOLCNT]; 272 static const VolumeCurvePoint sDefaultSystemVolumeCurve[AudioPolicyManager::VOLCNT]; 273 static const VolumeCurvePoint sDefaultSystemVolumeCurveDrc[AudioPolicyManager::VOLCNT]; 274 static const VolumeCurvePoint sHeadsetSystemVolumeCurve[AudioPolicyManager::VOLCNT]; 275 static const VolumeCurvePoint sDefaultVoiceVolumeCurve[AudioPolicyManager::VOLCNT]; 276 static const VolumeCurvePoint sSpeakerVoiceVolumeCurve[AudioPolicyManager::VOLCNT]; 277 // default volume curves per stream and device category. See initializeVolumeCurves() 278 static const VolumeCurvePoint *sVolumeProfiles[AUDIO_STREAM_CNT][DEVICE_CATEGORY_CNT]; 279 280 // descriptor for audio outputs. Used to maintain current configuration of each opened audio output 281 // and keep track of the usage of this output by each audio stream type. 282 class AudioOutputDescriptor 283 { 284 public: 285 AudioOutputDescriptor(const IOProfile *profile); 286 287 status_t dump(int fd); 288 289 audio_devices_t device() const; 290 void changeRefCount(audio_stream_type_t stream, int delta); 291 292 bool isDuplicated() const { return (mOutput1 != NULL && mOutput2 != NULL); } 293 audio_devices_t supportedDevices(); 294 uint32_t latency(); 295 bool sharesHwModuleWith(const AudioOutputDescriptor *outputDesc); 296 bool isActive(uint32_t inPastMs = 0) const; 297 bool isStreamActive(audio_stream_type_t stream, 298 uint32_t inPastMs = 0, 299 nsecs_t sysTime = 0) const; 300 bool isStrategyActive(routing_strategy strategy, 301 uint32_t inPastMs = 0, 302 nsecs_t sysTime = 0) const; 303 304 audio_io_handle_t mId; // output handle 305 uint32_t mSamplingRate; // 306 audio_format_t mFormat; // 307 audio_channel_mask_t mChannelMask; // output configuration 308 uint32_t mLatency; // 309 audio_output_flags_t mFlags; // 310 audio_devices_t mDevice; // current device this output is routed to 311 uint32_t mRefCount[AUDIO_STREAM_CNT]; // number of streams of each type using this output 312 nsecs_t mStopTime[AUDIO_STREAM_CNT]; 313 AudioOutputDescriptor *mOutput1; // used by duplicated outputs: first output 314 AudioOutputDescriptor *mOutput2; // used by duplicated outputs: second output 315 float mCurVolume[AUDIO_STREAM_CNT]; // current stream volume 316 int mMuteCount[AUDIO_STREAM_CNT]; // mute request counter 317 const IOProfile *mProfile; // I/O profile this output derives from 318 bool mStrategyMutedByDevice[NUM_STRATEGIES]; // strategies muted because of incompatible 319 // device selection. See checkDeviceMuteStrategies() 320 uint32_t mDirectOpenCount; // number of clients using this output (direct outputs only) 321 }; 322 323 // descriptor for audio inputs. Used to maintain current configuration of each opened audio input 324 // and keep track of the usage of this input. 325 class AudioInputDescriptor 326 { 327 public: 328 AudioInputDescriptor(const IOProfile *profile); 329 330 status_t dump(int fd); 331 332 uint32_t mSamplingRate; // 333 audio_format_t mFormat; // input configuration 334 audio_channel_mask_t mChannelMask; // 335 audio_devices_t mDevice; // current device this input is routed to 336 uint32_t mRefCount; // number of AudioRecord clients using this output 337 audio_source_t mInputSource; // input source selected by application (mediarecorder.h) 338 const IOProfile *mProfile; // I/O profile this output derives from 339 }; 340 341 // stream descriptor used for volume control 342 class StreamDescriptor 343 { 344 public: 345 StreamDescriptor(); 346 347 int getVolumeIndex(audio_devices_t device); 348 void dump(int fd); 349 350 int mIndexMin; // min volume index 351 int mIndexMax; // max volume index 352 KeyedVector<audio_devices_t, int> mIndexCur; // current volume index per device 353 bool mCanBeMuted; // true is the stream can be muted 354 355 const VolumeCurvePoint *mVolumeCurve[DEVICE_CATEGORY_CNT]; 356 }; 357 358 // stream descriptor used for volume control 359 class EffectDescriptor 360 { 361 public: 362 363 status_t dump(int fd); 364 365 int mIo; // io the effect is attached to 366 routing_strategy mStrategy; // routing strategy the effect is associated to 367 int mSession; // audio session the effect is on 368 effect_descriptor_t mDesc; // effect descriptor 369 bool mEnabled; // enabled state: CPU load being used or not 370 }; 371 372 void addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc); 373 374 // return the strategy corresponding to a given stream type 375 static routing_strategy getStrategy(audio_stream_type_t stream); 376 377 // return appropriate device for streams handled by the specified strategy according to current 378 // phone state, connected devices... 379 // if fromCache is true, the device is returned from mDeviceForStrategy[], 380 // otherwise it is determine by current state 381 // (device connected,phone state, force use, a2dp output...) 382 // This allows to: 383 // 1 speed up process when the state is stable (when starting or stopping an output) 384 // 2 access to either current device selection (fromCache == true) or 385 // "future" device selection (fromCache == false) when called from a context 386 // where conditions are changing (setDeviceConnectionState(), setPhoneState()...) AND 387 // before updateDevicesAndOutputs() is called. 388 virtual audio_devices_t getDeviceForStrategy(routing_strategy strategy, 389 bool fromCache); 390 391 // change the route of the specified output. Returns the number of ms we have slept to 392 // allow new routing to take effect in certain cases. 393 uint32_t setOutputDevice(audio_io_handle_t output, 394 audio_devices_t device, 395 bool force = false, 396 int delayMs = 0); 397 398 // select input device corresponding to requested audio source 399 virtual audio_devices_t getDeviceForInputSource(audio_source_t inputSource); 400 401 // return io handle of active input or 0 if no input is active 402 // Only considers inputs from physical devices (e.g. main mic, headset mic) when 403 // ignoreVirtualInputs is true. 404 audio_io_handle_t getActiveInput(bool ignoreVirtualInputs = true); 405 406 // initialize volume curves for each strategy and device category 407 void initializeVolumeCurves(); 408 409 // compute the actual volume for a given stream according to the requested index and a particular 410 // device 411 virtual float computeVolume(audio_stream_type_t stream, int index, 412 audio_io_handle_t output, audio_devices_t device); 413 414 // check that volume change is permitted, compute and send new volume to audio hardware 415 status_t checkAndSetVolume(audio_stream_type_t stream, int index, audio_io_handle_t output, 416 audio_devices_t device, int delayMs = 0, bool force = false); 417 418 // apply all stream volumes to the specified output and device 419 void applyStreamVolumes(audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false); 420 421 // Mute or unmute all streams handled by the specified strategy on the specified output 422 void setStrategyMute(routing_strategy strategy, 423 bool on, 424 audio_io_handle_t output, 425 int delayMs = 0, 426 audio_devices_t device = (audio_devices_t)0); 427 428 // Mute or unmute the stream on the specified output 429 void setStreamMute(audio_stream_type_t stream, 430 bool on, 431 audio_io_handle_t output, 432 int delayMs = 0, 433 audio_devices_t device = (audio_devices_t)0); 434 435 // handle special cases for sonification strategy while in call: mute streams or replace by 436 // a special tone in the device used for communication 437 void handleIncallSonification(audio_stream_type_t stream, bool starting, bool stateChange); 438 439 // true if device is in a telephony or VoIP call 440 virtual bool isInCall(); 441 442 // true if given state represents a device in a telephony or VoIP call 443 virtual bool isStateInCall(int state); 444 445 // when a device is connected, checks if an open output can be routed 446 // to this device. If none is open, tries to open one of the available outputs. 447 // Returns an output suitable to this device or 0. 448 // when a device is disconnected, checks if an output is not used any more and 449 // returns its handle if any. 450 // transfers the audio tracks and effects from one output thread to another accordingly. 451 status_t checkOutputsForDevice(audio_devices_t device, 452 audio_policy_dev_state_t state, 453 SortedVector<audio_io_handle_t>& outputs, 454 const String8 address); 455 456 // close an output and its companion duplicating output. 457 void closeOutput(audio_io_handle_t output); 458 459 // checks and if necessary changes outputs used for all strategies. 460 // must be called every time a condition that affects the output choice for a given strategy 461 // changes: connected device, phone state, force use... 462 // Must be called before updateDevicesAndOutputs() 463 void checkOutputForStrategy(routing_strategy strategy); 464 465 // Same as checkOutputForStrategy() but for a all strategies in order of priority 466 void checkOutputForAllStrategies(); 467 468 // manages A2DP output suspend/restore according to phone state and BT SCO usage 469 void checkA2dpSuspend(); 470 471 // returns the A2DP output handle if it is open or 0 otherwise 472 audio_io_handle_t getA2dpOutput(); 473 474 // selects the most appropriate device on output for current state 475 // must be called every time a condition that affects the device choice for a given output is 476 // changed: connected device, phone state, force use, output start, output stop.. 477 // see getDeviceForStrategy() for the use of fromCache parameter 478 479 audio_devices_t getNewDevice(audio_io_handle_t output, bool fromCache); 480 // updates cache of device used by all strategies (mDeviceForStrategy[]) 481 // must be called every time a condition that affects the device choice for a given strategy is 482 // changed: connected device, phone state, force use... 483 // cached values are used by getDeviceForStrategy() if parameter fromCache is true. 484 // Must be called after checkOutputForAllStrategies() 485 486 void updateDevicesAndOutputs(); 487 488 virtual uint32_t getMaxEffectsCpuLoad(); 489 virtual uint32_t getMaxEffectsMemory(); 490#ifdef AUDIO_POLICY_TEST 491 virtual bool threadLoop(); 492 void exit(); 493 int testOutputIndex(audio_io_handle_t output); 494#endif //AUDIO_POLICY_TEST 495 496 status_t setEffectEnabled(EffectDescriptor *pDesc, bool enabled); 497 498 // returns the category the device belongs to with regard to volume curve management 499 static device_category getDeviceCategory(audio_devices_t device); 500 501 // extract one device relevant for volume control from multiple device selection 502 static audio_devices_t getDeviceForVolume(audio_devices_t device); 503 504 SortedVector<audio_io_handle_t> getOutputsForDevice(audio_devices_t device, 505 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> openOutputs); 506 bool vectorsEqual(SortedVector<audio_io_handle_t>& outputs1, 507 SortedVector<audio_io_handle_t>& outputs2); 508 509 // mute/unmute strategies using an incompatible device combination 510 // if muting, wait for the audio in pcm buffer to be drained before proceeding 511 // if unmuting, unmute only after the specified delay 512 // Returns the number of ms waited 513 uint32_t checkDeviceMuteStrategies(AudioOutputDescriptor *outputDesc, 514 audio_devices_t prevDevice, 515 uint32_t delayMs); 516 517 audio_io_handle_t selectOutput(const SortedVector<audio_io_handle_t>& outputs, 518 audio_output_flags_t flags); 519 IOProfile *getInputProfile(audio_devices_t device, 520 uint32_t samplingRate, 521 audio_format_t format, 522 audio_channel_mask_t channelMask); 523 IOProfile *getProfileForDirectOutput(audio_devices_t device, 524 uint32_t samplingRate, 525 audio_format_t format, 526 audio_channel_mask_t channelMask, 527 audio_output_flags_t flags); 528 529 audio_io_handle_t selectOutputForEffects(const SortedVector<audio_io_handle_t>& outputs); 530 531 bool isNonOffloadableEffectEnabled(); 532 533 // 534 // Audio policy configuration file parsing (audio_policy.conf) 535 // 536 static uint32_t stringToEnum(const struct StringToEnum *table, 537 size_t size, 538 const char *name); 539 static const char *enumToString(const struct StringToEnum *table, 540 size_t size, 541 uint32_t value); 542 static bool stringToBool(const char *value); 543 static audio_output_flags_t parseFlagNames(char *name); 544 static audio_devices_t parseDeviceNames(char *name); 545 void loadSamplingRates(char *name, IOProfile *profile); 546 void loadFormats(char *name, IOProfile *profile); 547 void loadOutChannels(char *name, IOProfile *profile); 548 void loadInChannels(char *name, IOProfile *profile); 549 status_t loadOutput(cnode *root, HwModule *module); 550 status_t loadInput(cnode *root, HwModule *module); 551 void loadHwModule(cnode *root); 552 void loadHwModules(cnode *root); 553 void loadGlobalConfig(cnode *root); 554 status_t loadAudioPolicyConfig(const char *path); 555 void defaultAudioPolicyConfig(void); 556 557 558 AudioPolicyClientInterface *mpClientInterface; // audio policy client interface 559 audio_io_handle_t mPrimaryOutput; // primary output handle 560 // list of descriptors for outputs currently opened 561 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mOutputs; 562 // copy of mOutputs before setDeviceConnectionState() opens new outputs 563 // reset to mOutputs when updateDevicesAndOutputs() is called. 564 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mPreviousOutputs; 565 DefaultKeyedVector<audio_io_handle_t, AudioInputDescriptor *> mInputs; // list of input descriptors 566 DeviceVector mAvailableOutputDevices; // bit field of all available output devices 567 DeviceVector mAvailableInputDevices; // bit field of all available input devices 568 // without AUDIO_DEVICE_BIT_IN to allow direct bit 569 // field comparisons 570 int mPhoneState; // current phone state 571 audio_policy_forced_cfg_t mForceUse[AUDIO_POLICY_FORCE_USE_CNT]; // current forced use configuration 572 573 StreamDescriptor mStreams[AUDIO_STREAM_CNT]; // stream descriptors for volume control 574 bool mLimitRingtoneVolume; // limit ringtone volume to music volume if headset connected 575 audio_devices_t mDeviceForStrategy[NUM_STRATEGIES]; 576 float mLastVoiceVolume; // last voice volume value sent to audio HAL 577 578 // Maximum CPU load allocated to audio effects in 0.1 MIPS (ARMv5TE, 0 WS memory) units 579 static const uint32_t MAX_EFFECTS_CPU_LOAD = 1000; 580 // Maximum memory allocated to audio effects in KB 581 static const uint32_t MAX_EFFECTS_MEMORY = 512; 582 uint32_t mTotalEffectsCpuLoad; // current CPU load used by effects 583 uint32_t mTotalEffectsMemory; // current memory used by effects 584 KeyedVector<int, EffectDescriptor *> mEffects; // list of registered audio effects 585 bool mA2dpSuspended; // true if A2DP output is suspended 586 sp<DeviceDescriptor> mDefaultOutputDevice; // output device selected by default at boot time 587 bool mSpeakerDrcEnabled;// true on devices that use DRC on the DEVICE_CATEGORY_SPEAKER path 588 // to boost soft sounds, used to adjust volume curves accordingly 589 590 Vector <HwModule *> mHwModules; 591 volatile int32_t mNextUniqueId; 592 593#ifdef AUDIO_POLICY_TEST 594 Mutex mLock; 595 Condition mWaitWorkCV; 596 597 int mCurOutput; 598 bool mDirectOutput; 599 audio_io_handle_t mTestOutputs[NUM_TEST_OUTPUTS]; 600 int mTestInput; 601 uint32_t mTestDevice; 602 uint32_t mTestSamplingRate; 603 uint32_t mTestFormat; 604 uint32_t mTestChannels; 605 uint32_t mTestLatencyMs; 606#endif //AUDIO_POLICY_TEST 607 608private: 609 static float volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc, 610 int indexInUi); 611 // updates device caching and output for streams that can influence the 612 // routing of notifications 613 void handleNotificationRoutingForStream(audio_stream_type_t stream); 614 static bool isVirtualInputDevice(audio_devices_t device); 615 uint32_t nextUniqueId(); 616 // converts device address to string sent to audio HAL via setParameters 617 static String8 addressToParameter(audio_devices_t device, const String8 address); 618}; 619 620}; 621