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 <hardware_legacy/AudioPolicyInterface.h> 27 28 29 namespace android_audio_legacy { 30 using android::KeyedVector; 31 using android::DefaultKeyedVector; 32 using android::SortedVector; 33 34 // ---------------------------------------------------------------------------- 35 36 #define MAX_DEVICE_ADDRESS_LEN 20 37 // Attenuation applied to STRATEGY_SONIFICATION streams when a headset is connected: 6dB 38 #define SONIFICATION_HEADSET_VOLUME_FACTOR 0.5 39 // Min volume for STRATEGY_SONIFICATION streams when limited by music volume: -36dB 40 #define SONIFICATION_HEADSET_VOLUME_MIN 0.016 41 // Time in milliseconds during which we consider that music is still active after a music 42 // track was stopped - see computeVolume() 43 #define SONIFICATION_HEADSET_MUSIC_DELAY 5000 44 // Time in milliseconds after media stopped playing during which we consider that the 45 // sonification should be as unobtrusive as during the time media was playing. 46 #define SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY 5000 47 // Time in milliseconds during witch some streams are muted while the audio path 48 // is switched 49 #define MUTE_TIME_MS 2000 50 51 #define NUM_TEST_OUTPUTS 5 52 53 #define NUM_VOL_CURVE_KNEES 2 54 55 // Default minimum length allowed for offloading a compressed track 56 // Can be overridden by the audio.offload.min.duration.secs property 57 #define OFFLOAD_DEFAULT_MIN_DURATION_SECS 60 58 59 // ---------------------------------------------------------------------------- 60 // AudioPolicyManagerBase implements audio policy manager behavior common to all platforms. 61 // Each platform must implement an AudioPolicyManager class derived from AudioPolicyManagerBase 62 // and override methods for which the platform specific behavior differs from the implementation 63 // in AudioPolicyManagerBase. Even if no specific behavior is required, the AudioPolicyManager 64 // class must be implemented as well as the class factory function createAudioPolicyManager() 65 // and provided in a shared library libaudiopolicy.so. 66 // ---------------------------------------------------------------------------- 67 68 class AudioPolicyManagerBase: public AudioPolicyInterface 69 #ifdef AUDIO_POLICY_TEST 70 , public Thread 71 #endif //AUDIO_POLICY_TEST 72 { 73 74 public: 75 AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface); 76 virtual ~AudioPolicyManagerBase(); 77 78 // AudioPolicyInterface 79 virtual status_t setDeviceConnectionState(audio_devices_t device, 80 AudioSystem::device_connection_state state, 81 const char *device_address); 82 virtual AudioSystem::device_connection_state getDeviceConnectionState(audio_devices_t device, 83 const char *device_address); 84 virtual void setPhoneState(int state); 85 virtual void setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config); 86 virtual AudioSystem::forced_config getForceUse(AudioSystem::force_use usage); 87 virtual void setSystemProperty(const char* property, const char* value); 88 virtual status_t initCheck(); 89 virtual audio_io_handle_t getOutput(AudioSystem::stream_type stream, 90 uint32_t samplingRate, 91 audio_format_t format, 92 audio_channel_mask_t channelMask, 93 AudioSystem::output_flags flags, 94 const audio_offload_info_t *offloadInfo); 95 virtual status_t startOutput(audio_io_handle_t output, 96 AudioSystem::stream_type stream, 97 audio_session_t session = AUDIO_SESSION_NONE); 98 virtual status_t stopOutput(audio_io_handle_t output, 99 AudioSystem::stream_type stream, 100 audio_session_t session = AUDIO_SESSION_NONE); 101 virtual void releaseOutput(audio_io_handle_t output); 102 virtual audio_io_handle_t getInput(int inputSource, 103 uint32_t samplingRate, 104 audio_format_t format, 105 audio_channel_mask_t channelMask, 106 AudioSystem::audio_in_acoustics acoustics); 107 108 // indicates to the audio policy manager that the input starts being used. 109 virtual status_t startInput(audio_io_handle_t input); 110 111 // indicates to the audio policy manager that the input stops being used. 112 virtual status_t stopInput(audio_io_handle_t input); 113 virtual void releaseInput(audio_io_handle_t input); 114 virtual void closeAllInputs(); 115 virtual void initStreamVolume(AudioSystem::stream_type stream, 116 int indexMin, 117 int indexMax); 118 virtual status_t setStreamVolumeIndex(AudioSystem::stream_type stream, 119 int index, 120 audio_devices_t device); 121 virtual status_t getStreamVolumeIndex(AudioSystem::stream_type stream, 122 int *index, 123 audio_devices_t device); 124 125 // return the strategy corresponding to a given stream type 126 virtual uint32_t getStrategyForStream(AudioSystem::stream_type stream); 127 128 // return the enabled output devices for the given stream type 129 virtual audio_devices_t getDevicesForStream(AudioSystem::stream_type stream); 130 131 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc = NULL); 132 virtual status_t registerEffect(const effect_descriptor_t *desc, 133 audio_io_handle_t io, 134 uint32_t strategy, 135 audio_session_t session, 136 int id); 137 virtual status_t unregisterEffect(int id); 138 virtual status_t setEffectEnabled(int id, bool enabled); 139 140 virtual bool isStreamActive(int stream, uint32_t inPastMs = 0) const; 141 // return whether a stream is playing remotely, override to change the definition of 142 // local/remote playback, used for instance by notification manager to not make 143 // media players lose audio focus when not playing locally 144 virtual bool isStreamActiveRemotely(int stream, uint32_t inPastMs = 0) const; 145 virtual bool isSourceActive(audio_source_t source) const; 146 147 virtual status_t dump(int fd); 148 149 virtual bool isOffloadSupported(const audio_offload_info_t& offloadInfo); 150 151 protected: 152 153 enum routing_strategy { 154 STRATEGY_MEDIA, 155 STRATEGY_PHONE, 156 STRATEGY_SONIFICATION, 157 STRATEGY_SONIFICATION_RESPECTFUL, 158 STRATEGY_DTMF, 159 STRATEGY_ENFORCED_AUDIBLE, 160 NUM_STRATEGIES 161 }; 162 163 // 4 points to define the volume attenuation curve, each characterized by the volume 164 // index (from 0 to 100) at which they apply, and the attenuation in dB at that index. 165 // we use 100 steps to avoid rounding errors when computing the volume in volIndexToAmpl() 166 167 enum { VOLMIN = 0, VOLKNEE1 = 1, VOLKNEE2 = 2, VOLMAX = 3, VOLCNT = 4}; 168 169 class VolumeCurvePoint 170 { 171 public: 172 int mIndex; 173 float mDBAttenuation; 174 }; 175 176 // device categories used for volume curve management. 177 enum device_category { 178 DEVICE_CATEGORY_HEADSET, 179 DEVICE_CATEGORY_SPEAKER, 180 DEVICE_CATEGORY_EARPIECE, 181 DEVICE_CATEGORY_CNT 182 }; 183 184 class IOProfile; 185 186 class HwModule { 187 public: 188 HwModule(const char *name); 189 ~HwModule(); 190 191 void dump(int fd); 192 193 const char *const mName; // base name of the audio HW module (primary, a2dp ...) 194 audio_module_handle_t mHandle; 195 Vector <IOProfile *> mOutputProfiles; // output profiles exposed by this module 196 Vector <IOProfile *> mInputProfiles; // input profiles exposed by this module 197 }; 198 199 // the IOProfile class describes the capabilities of an output or input stream. 200 // It is currently assumed that all combination of listed parameters are supported. 201 // It is used by the policy manager to determine if an output or input is suitable for 202 // a given use case, open/close it accordingly and connect/disconnect audio tracks 203 // to/from it. 204 class IOProfile 205 { 206 public: 207 IOProfile(HwModule *module); 208 ~IOProfile(); 209 210 bool isCompatibleProfile(audio_devices_t device, 211 uint32_t samplingRate, 212 audio_format_t format, 213 audio_channel_mask_t channelMask, 214 audio_output_flags_t flags) const; 215 216 void dump(int fd); 217 void log(); 218 219 // by convention, "0' in the first entry in mSamplingRates, mChannelMasks or mFormats 220 // indicates the supported parameters should be read from the output stream 221 // after it is opened for the first time 222 Vector <uint32_t> mSamplingRates; // supported sampling rates 223 Vector <audio_channel_mask_t> mChannelMasks; // supported channel masks 224 Vector <audio_format_t> mFormats; // supported audio formats 225 audio_devices_t mSupportedDevices; // supported devices (devices this output can be 226 // routed to) 227 audio_output_flags_t mFlags; // attribute flags (e.g primary output, 228 // direct output...). For outputs only. 229 HwModule *mModule; // audio HW module exposing this I/O stream 230 }; 231 232 // default volume curve 233 static const VolumeCurvePoint sDefaultVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 234 // default volume curve for media strategy 235 static const VolumeCurvePoint sDefaultMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 236 // volume curve for media strategy on speakers 237 static const VolumeCurvePoint sSpeakerMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 238 // volume curve for sonification strategy on speakers 239 static const VolumeCurvePoint sSpeakerSonificationVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 240 static const VolumeCurvePoint sSpeakerSonificationVolumeCurveDrc[AudioPolicyManagerBase::VOLCNT]; 241 static const VolumeCurvePoint sDefaultSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 242 static const VolumeCurvePoint sDefaultSystemVolumeCurveDrc[AudioPolicyManagerBase::VOLCNT]; 243 static const VolumeCurvePoint sHeadsetSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 244 static const VolumeCurvePoint sDefaultVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 245 static const VolumeCurvePoint sSpeakerVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 246 // default volume curves per stream and device category. See initializeVolumeCurves() 247 static const VolumeCurvePoint *sVolumeProfiles[AudioSystem::NUM_STREAM_TYPES][DEVICE_CATEGORY_CNT]; 248 249 // descriptor for audio outputs. Used to maintain current configuration of each opened audio output 250 // and keep track of the usage of this output by each audio stream type. 251 class AudioOutputDescriptor 252 { 253 public: 254 AudioOutputDescriptor(const IOProfile *profile); 255 256 status_t dump(int fd); 257 258 audio_devices_t device() const; 259 void changeRefCount(AudioSystem::stream_type stream, int delta); 260 isDuplicated()261 bool isDuplicated() const { return (mOutput1 != NULL && mOutput2 != NULL); } 262 audio_devices_t supportedDevices(); 263 uint32_t latency(); 264 bool sharesHwModuleWith(const AudioOutputDescriptor *outputDesc); 265 bool isActive(uint32_t inPastMs = 0) const; 266 bool isStreamActive(AudioSystem::stream_type stream, 267 uint32_t inPastMs = 0, 268 nsecs_t sysTime = 0) const; 269 bool isStrategyActive(routing_strategy strategy, 270 uint32_t inPastMs = 0, 271 nsecs_t sysTime = 0) const; 272 273 audio_io_handle_t mId; // output handle 274 uint32_t mSamplingRate; // 275 audio_format_t mFormat; // 276 audio_channel_mask_t mChannelMask; // output configuration 277 uint32_t mLatency; // 278 audio_output_flags_t mFlags; // 279 audio_devices_t mDevice; // current device this output is routed to 280 uint32_t mRefCount[AudioSystem::NUM_STREAM_TYPES]; // number of streams of each type using this output 281 nsecs_t mStopTime[AudioSystem::NUM_STREAM_TYPES]; 282 AudioOutputDescriptor *mOutput1; // used by duplicated outputs: first output 283 AudioOutputDescriptor *mOutput2; // used by duplicated outputs: second output 284 float mCurVolume[AudioSystem::NUM_STREAM_TYPES]; // current stream volume 285 int mMuteCount[AudioSystem::NUM_STREAM_TYPES]; // mute request counter 286 const IOProfile *mProfile; // I/O profile this output derives from 287 bool mStrategyMutedByDevice[NUM_STRATEGIES]; // strategies muted because of incompatible 288 // device selection. See checkDeviceMuteStrategies() 289 uint32_t mDirectOpenCount; // number of clients using this output (direct outputs only) 290 bool mForceRouting; // Next routing for this output will be forced as current device routed is null 291 }; 292 293 // descriptor for audio inputs. Used to maintain current configuration of each opened audio input 294 // and keep track of the usage of this input. 295 class AudioInputDescriptor 296 { 297 public: 298 AudioInputDescriptor(const IOProfile *profile); 299 300 status_t dump(int fd); 301 302 audio_io_handle_t mId; // input handle 303 uint32_t mSamplingRate; // 304 audio_format_t mFormat; // input configuration 305 audio_channel_mask_t mChannelMask; // 306 audio_devices_t mDevice; // current device this input is routed to 307 uint32_t mRefCount; // number of AudioRecord clients using this output 308 int mInputSource; // input source selected by application (mediarecorder.h) 309 const IOProfile *mProfile; // I/O profile this output derives from 310 }; 311 312 // stream descriptor used for volume control 313 class StreamDescriptor 314 { 315 public: 316 StreamDescriptor(); 317 318 int getVolumeIndex(audio_devices_t device); 319 void dump(int fd); 320 321 int mIndexMin; // min volume index 322 int mIndexMax; // max volume index 323 KeyedVector<audio_devices_t, int> mIndexCur; // current volume index per device 324 bool mCanBeMuted; // true is the stream can be muted 325 326 const VolumeCurvePoint *mVolumeCurve[DEVICE_CATEGORY_CNT]; 327 }; 328 329 // stream descriptor used for volume control 330 class EffectDescriptor 331 { 332 public: 333 334 status_t dump(int fd); 335 336 int mIo; // io the effect is attached to 337 routing_strategy mStrategy; // routing strategy the effect is associated to 338 audio_session_t mSession; // audio session the effect is on 339 effect_descriptor_t mDesc; // effect descriptor 340 bool mEnabled; // enabled state: CPU load being used or not 341 }; 342 343 void addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc); 344 void addInput(audio_io_handle_t id, AudioInputDescriptor *inputDesc); 345 346 // return the strategy corresponding to a given stream type 347 static routing_strategy getStrategy(AudioSystem::stream_type stream); 348 349 // return appropriate device for streams handled by the specified strategy according to current 350 // phone state, connected devices... 351 // if fromCache is true, the device is returned from mDeviceForStrategy[], 352 // otherwise it is determine by current state 353 // (device connected,phone state, force use, a2dp output...) 354 // This allows to: 355 // 1 speed up process when the state is stable (when starting or stopping an output) 356 // 2 access to either current device selection (fromCache == true) or 357 // "future" device selection (fromCache == false) when called from a context 358 // where conditions are changing (setDeviceConnectionState(), setPhoneState()...) AND 359 // before updateDevicesAndOutputs() is called. 360 virtual audio_devices_t getDeviceForStrategy(routing_strategy strategy, 361 bool fromCache); 362 363 // change the route of the specified output. Returns the number of ms we have slept to 364 // allow new routing to take effect in certain cases. 365 uint32_t setOutputDevice(audio_io_handle_t output, 366 audio_devices_t device, 367 bool force = false, 368 int delayMs = 0); 369 370 // select input device corresponding to requested audio source 371 virtual audio_devices_t getDeviceForInputSource(int inputSource); 372 373 // return io handle of active input or 0 if no input is active 374 // Only considers inputs from physical devices (e.g. main mic, headset mic) when 375 // ignoreVirtualInputs is true. 376 audio_io_handle_t getActiveInput(bool ignoreVirtualInputs = true); 377 378 // initialize volume curves for each strategy and device category 379 void initializeVolumeCurves(); 380 381 // compute the actual volume for a given stream according to the requested index and a particular 382 // device 383 virtual float computeVolume(int stream, int index, audio_io_handle_t output, audio_devices_t device); 384 385 // check that volume change is permitted, compute and send new volume to audio hardware 386 status_t checkAndSetVolume(int stream, int index, audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false); 387 388 // apply all stream volumes to the specified output and device 389 void applyStreamVolumes(audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false); 390 391 // Mute or unmute all streams handled by the specified strategy on the specified output 392 void setStrategyMute(routing_strategy strategy, 393 bool on, 394 audio_io_handle_t output, 395 int delayMs = 0, 396 audio_devices_t device = (audio_devices_t)0); 397 398 // Mute or unmute the stream on the specified output 399 void setStreamMute(int stream, 400 bool on, 401 audio_io_handle_t output, 402 int delayMs = 0, 403 audio_devices_t device = (audio_devices_t)0); 404 405 // handle special cases for sonification strategy while in call: mute streams or replace by 406 // a special tone in the device used for communication 407 void handleIncallSonification(int stream, bool starting, bool stateChange); 408 409 // true if device is in a telephony or VoIP call 410 virtual bool isInCall(); 411 412 // true if given state represents a device in a telephony or VoIP call 413 virtual bool isStateInCall(int state); 414 415 // when a device is connected, checks if an open output can be routed 416 // to this device. If none is open, tries to open one of the available outputs. 417 // Returns an output suitable to this device or 0. 418 // when a device is disconnected, checks if an output is not used any more and 419 // returns its handle if any. 420 // transfers the audio tracks and effects from one output thread to another accordingly. 421 status_t checkOutputsForDevice(audio_devices_t device, 422 AudioSystem::device_connection_state state, 423 SortedVector<audio_io_handle_t>& outputs, 424 const String8 paramStr); 425 426 status_t checkInputsForDevice(audio_devices_t device, 427 AudioSystem::device_connection_state state, 428 SortedVector<audio_io_handle_t>& inputs, 429 const String8 paramStr); 430 431 // close an output and its companion duplicating output. 432 void closeOutput(audio_io_handle_t output); 433 434 // checks and if necessary changes outputs used for all strategies. 435 // must be called every time a condition that affects the output choice for a given strategy 436 // changes: connected device, phone state, force use... 437 // Must be called before updateDevicesAndOutputs() 438 void checkOutputForStrategy(routing_strategy strategy); 439 440 // Same as checkOutputForStrategy() but for a all strategies in order of priority 441 void checkOutputForAllStrategies(); 442 443 // manages A2DP output suspend/restore according to phone state and BT SCO usage 444 void checkA2dpSuspend(); 445 446 // returns the A2DP output handle if it is open or 0 otherwise 447 audio_io_handle_t getA2dpOutput(); 448 449 // selects the most appropriate device on output for current state 450 // must be called every time a condition that affects the device choice for a given output is 451 // changed: connected device, phone state, force use, output start, output stop.. 452 // see getDeviceForStrategy() for the use of fromCache parameter 453 454 audio_devices_t getNewDevice(audio_io_handle_t output, bool fromCache); 455 // updates cache of device used by all strategies (mDeviceForStrategy[]) 456 // must be called every time a condition that affects the device choice for a given strategy is 457 // changed: connected device, phone state, force use... 458 // cached values are used by getDeviceForStrategy() if parameter fromCache is true. 459 // Must be called after checkOutputForAllStrategies() 460 461 void updateDevicesAndOutputs(); 462 463 virtual uint32_t getMaxEffectsCpuLoad(); 464 virtual uint32_t getMaxEffectsMemory(); 465 #ifdef AUDIO_POLICY_TEST 466 virtual bool threadLoop(); 467 void exit(); 468 int testOutputIndex(audio_io_handle_t output); 469 #endif //AUDIO_POLICY_TEST 470 471 status_t setEffectEnabled(EffectDescriptor *pDesc, bool enabled); 472 473 // returns the category the device belongs to with regard to volume curve management 474 static device_category getDeviceCategory(audio_devices_t device); 475 476 // extract one device relevant for volume control from multiple device selection 477 static audio_devices_t getDeviceForVolume(audio_devices_t device); 478 479 SortedVector<audio_io_handle_t> getOutputsForDevice(audio_devices_t device, 480 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> openOutputs); 481 bool vectorsEqual(SortedVector<audio_io_handle_t>& outputs1, 482 SortedVector<audio_io_handle_t>& outputs2); 483 484 // mute/unmute strategies using an incompatible device combination 485 // if muting, wait for the audio in pcm buffer to be drained before proceeding 486 // if unmuting, unmute only after the specified delay 487 // Returns the number of ms waited 488 uint32_t checkDeviceMuteStrategies(AudioOutputDescriptor *outputDesc, 489 audio_devices_t prevDevice, 490 uint32_t delayMs); 491 492 audio_io_handle_t selectOutput(const SortedVector<audio_io_handle_t>& outputs, 493 AudioSystem::output_flags flags); 494 IOProfile *getInputProfile(audio_devices_t device, 495 uint32_t samplingRate, 496 audio_format_t format, 497 audio_channel_mask_t channelMask); 498 IOProfile *getProfileForDirectOutput(audio_devices_t device, 499 uint32_t samplingRate, 500 audio_format_t format, 501 audio_channel_mask_t channelMask, 502 audio_output_flags_t flags); 503 504 audio_io_handle_t selectOutputForEffects(const SortedVector<audio_io_handle_t>& outputs); 505 506 bool isNonOffloadableEffectEnabled(); 507 508 // 509 // Audio policy configuration file parsing (audio_policy.conf) 510 // 511 static uint32_t stringToEnum(const struct StringToEnum *table, 512 size_t size, 513 const char *name); 514 static bool stringToBool(const char *value); 515 static audio_output_flags_t parseFlagNames(char *name); 516 static audio_devices_t parseDeviceNames(char *name); 517 void loadSamplingRates(char *name, IOProfile *profile); 518 void loadFormats(char *name, IOProfile *profile); 519 void loadOutChannels(char *name, IOProfile *profile); 520 void loadInChannels(char *name, IOProfile *profile); 521 status_t loadOutput(cnode *root, HwModule *module); 522 status_t loadInput(cnode *root, HwModule *module); 523 void loadHwModule(cnode *root); 524 void loadHwModules(cnode *root); 525 void loadGlobalConfig(cnode *root); 526 status_t loadAudioPolicyConfig(const char *path); 527 void defaultAudioPolicyConfig(void); 528 529 530 AudioPolicyClientInterface *mpClientInterface; // audio policy client interface 531 audio_io_handle_t mPrimaryOutput; // primary output handle 532 // list of descriptors for outputs currently opened 533 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mOutputs; 534 // copy of mOutputs before setDeviceConnectionState() opens new outputs 535 // reset to mOutputs when updateDevicesAndOutputs() is called. 536 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mPreviousOutputs; 537 538 // list of input descriptors currently opened 539 DefaultKeyedVector<audio_io_handle_t, AudioInputDescriptor *> mInputs; 540 541 audio_devices_t mAvailableOutputDevices; // bit field of all available output devices 542 audio_devices_t mAvailableInputDevices; // bit field of all available input devices 543 // without AUDIO_DEVICE_BIT_IN to allow direct bit 544 // field comparisons 545 int mPhoneState; // current phone state 546 AudioSystem::forced_config mForceUse[AudioSystem::NUM_FORCE_USE]; // current forced use configuration 547 548 StreamDescriptor mStreams[AudioSystem::NUM_STREAM_TYPES]; // stream descriptors for volume control 549 String8 mA2dpDeviceAddress; // A2DP device MAC address 550 String8 mScoDeviceAddress; // SCO device MAC address 551 String8 mUsbOutCardAndDevice; // USB audio ALSA card and device numbers: 552 // card=<card_number>;device=<><device_number> 553 bool mLimitRingtoneVolume; // limit ringtone volume to music volume if headset connected 554 audio_devices_t mDeviceForStrategy[NUM_STRATEGIES]; 555 float mLastVoiceVolume; // last voice volume value sent to audio HAL 556 557 // Maximum CPU load allocated to audio effects in 0.1 MIPS (ARMv5TE, 0 WS memory) units 558 static const uint32_t MAX_EFFECTS_CPU_LOAD = 1000; 559 // Maximum memory allocated to audio effects in KB 560 static const uint32_t MAX_EFFECTS_MEMORY = 512; 561 uint32_t mTotalEffectsCpuLoad; // current CPU load used by effects 562 uint32_t mTotalEffectsMemory; // current memory used by effects 563 KeyedVector<int, EffectDescriptor *> mEffects; // list of registered audio effects 564 bool mA2dpSuspended; // true if A2DP output is suspended 565 bool mHasA2dp; // true on platforms with support for bluetooth A2DP 566 bool mHasUsb; // true on platforms with support for USB audio 567 bool mHasRemoteSubmix; // true on platforms with support for remote presentation of a submix 568 audio_devices_t mAttachedOutputDevices; // output devices always available on the platform 569 audio_devices_t mDefaultOutputDevice; // output device selected by default at boot time 570 // (must be in mAttachedOutputDevices) 571 bool mSpeakerDrcEnabled;// true on devices that use DRC on the DEVICE_CATEGORY_SPEAKER path 572 // to boost soft sounds, used to adjust volume curves accordingly 573 574 Vector <HwModule *> mHwModules; 575 576 #ifdef AUDIO_POLICY_TEST 577 Mutex mLock; 578 Condition mWaitWorkCV; 579 580 int mCurOutput; 581 bool mDirectOutput; 582 audio_io_handle_t mTestOutputs[NUM_TEST_OUTPUTS]; 583 int mTestInput; 584 uint32_t mTestDevice; 585 uint32_t mTestSamplingRate; 586 uint32_t mTestFormat; 587 uint32_t mTestChannels; 588 uint32_t mTestLatencyMs; 589 #endif //AUDIO_POLICY_TEST 590 591 private: 592 static float volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc, 593 int indexInUi); 594 // updates device caching and output for streams that can influence the 595 // routing of notifications 596 void handleNotificationRoutingForStream(AudioSystem::stream_type stream); 597 static bool isVirtualInputDevice(audio_devices_t device); 598 }; 599 600 }; 601