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 29namespace 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 68class AudioPolicyManagerBase: public AudioPolicyInterface 69#ifdef AUDIO_POLICY_TEST 70 , public Thread 71#endif //AUDIO_POLICY_TEST 72{ 73 74public: 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 int session = 0); 98 virtual status_t stopOutput(audio_io_handle_t output, 99 AudioSystem::stream_type stream, 100 int session = 0); 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 int 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 151protected: 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); 260 261 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 }; 291 292 // descriptor for audio inputs. Used to maintain current configuration of each opened audio input 293 // and keep track of the usage of this input. 294 class AudioInputDescriptor 295 { 296 public: 297 AudioInputDescriptor(const IOProfile *profile); 298 299 status_t dump(int fd); 300 301 audio_io_handle_t mId; // input handle 302 uint32_t mSamplingRate; // 303 audio_format_t mFormat; // input configuration 304 audio_channel_mask_t mChannelMask; // 305 audio_devices_t mDevice; // current device this input is routed to 306 uint32_t mRefCount; // number of AudioRecord clients using this output 307 int mInputSource; // input source selected by application (mediarecorder.h) 308 const IOProfile *mProfile; // I/O profile this output derives from 309 }; 310 311 // stream descriptor used for volume control 312 class StreamDescriptor 313 { 314 public: 315 StreamDescriptor(); 316 317 int getVolumeIndex(audio_devices_t device); 318 void dump(int fd); 319 320 int mIndexMin; // min volume index 321 int mIndexMax; // max volume index 322 KeyedVector<audio_devices_t, int> mIndexCur; // current volume index per device 323 bool mCanBeMuted; // true is the stream can be muted 324 325 const VolumeCurvePoint *mVolumeCurve[DEVICE_CATEGORY_CNT]; 326 }; 327 328 // stream descriptor used for volume control 329 class EffectDescriptor 330 { 331 public: 332 333 status_t dump(int fd); 334 335 int mIo; // io the effect is attached to 336 routing_strategy mStrategy; // routing strategy the effect is associated to 337 int mSession; // audio session the effect is on 338 effect_descriptor_t mDesc; // effect descriptor 339 bool mEnabled; // enabled state: CPU load being used or not 340 }; 341 342 void addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc); 343 void addInput(audio_io_handle_t id, AudioInputDescriptor *inputDesc); 344 345 // return the strategy corresponding to a given stream type 346 static routing_strategy getStrategy(AudioSystem::stream_type stream); 347 348 // return appropriate device for streams handled by the specified strategy according to current 349 // phone state, connected devices... 350 // if fromCache is true, the device is returned from mDeviceForStrategy[], 351 // otherwise it is determine by current state 352 // (device connected,phone state, force use, a2dp output...) 353 // This allows to: 354 // 1 speed up process when the state is stable (when starting or stopping an output) 355 // 2 access to either current device selection (fromCache == true) or 356 // "future" device selection (fromCache == false) when called from a context 357 // where conditions are changing (setDeviceConnectionState(), setPhoneState()...) AND 358 // before updateDevicesAndOutputs() is called. 359 virtual audio_devices_t getDeviceForStrategy(routing_strategy strategy, 360 bool fromCache); 361 362 // change the route of the specified output. Returns the number of ms we have slept to 363 // allow new routing to take effect in certain cases. 364 uint32_t setOutputDevice(audio_io_handle_t output, 365 audio_devices_t device, 366 bool force = false, 367 int delayMs = 0); 368 369 // select input device corresponding to requested audio source 370 virtual audio_devices_t getDeviceForInputSource(int inputSource); 371 372 // return io handle of active input or 0 if no input is active 373 // Only considers inputs from physical devices (e.g. main mic, headset mic) when 374 // ignoreVirtualInputs is true. 375 audio_io_handle_t getActiveInput(bool ignoreVirtualInputs = true); 376 377 // initialize volume curves for each strategy and device category 378 void initializeVolumeCurves(); 379 380 // compute the actual volume for a given stream according to the requested index and a particular 381 // device 382 virtual float computeVolume(int stream, int index, audio_io_handle_t output, audio_devices_t device); 383 384 // check that volume change is permitted, compute and send new volume to audio hardware 385 status_t checkAndSetVolume(int stream, int index, audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false); 386 387 // apply all stream volumes to the specified output and device 388 void applyStreamVolumes(audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false); 389 390 // Mute or unmute all streams handled by the specified strategy on the specified output 391 void setStrategyMute(routing_strategy strategy, 392 bool on, 393 audio_io_handle_t output, 394 int delayMs = 0, 395 audio_devices_t device = (audio_devices_t)0); 396 397 // Mute or unmute the stream on the specified output 398 void setStreamMute(int stream, 399 bool on, 400 audio_io_handle_t output, 401 int delayMs = 0, 402 audio_devices_t device = (audio_devices_t)0); 403 404 // handle special cases for sonification strategy while in call: mute streams or replace by 405 // a special tone in the device used for communication 406 void handleIncallSonification(int stream, bool starting, bool stateChange); 407 408 // true if device is in a telephony or VoIP call 409 virtual bool isInCall(); 410 411 // true if given state represents a device in a telephony or VoIP call 412 virtual bool isStateInCall(int state); 413 414 // when a device is connected, checks if an open output can be routed 415 // to this device. If none is open, tries to open one of the available outputs. 416 // Returns an output suitable to this device or 0. 417 // when a device is disconnected, checks if an output is not used any more and 418 // returns its handle if any. 419 // transfers the audio tracks and effects from one output thread to another accordingly. 420 status_t checkOutputsForDevice(audio_devices_t device, 421 AudioSystem::device_connection_state state, 422 SortedVector<audio_io_handle_t>& outputs, 423 const String8 paramStr); 424 425 status_t checkInputsForDevice(audio_devices_t device, 426 AudioSystem::device_connection_state state, 427 SortedVector<audio_io_handle_t>& inputs, 428 const String8 paramStr); 429 430 // close an output and its companion duplicating output. 431 void closeOutput(audio_io_handle_t output); 432 433 // checks and if necessary changes outputs used for all strategies. 434 // must be called every time a condition that affects the output choice for a given strategy 435 // changes: connected device, phone state, force use... 436 // Must be called before updateDevicesAndOutputs() 437 void checkOutputForStrategy(routing_strategy strategy); 438 439 // Same as checkOutputForStrategy() but for a all strategies in order of priority 440 void checkOutputForAllStrategies(); 441 442 // manages A2DP output suspend/restore according to phone state and BT SCO usage 443 void checkA2dpSuspend(); 444 445 // returns the A2DP output handle if it is open or 0 otherwise 446 audio_io_handle_t getA2dpOutput(); 447 448 // selects the most appropriate device on output for current state 449 // must be called every time a condition that affects the device choice for a given output is 450 // changed: connected device, phone state, force use, output start, output stop.. 451 // see getDeviceForStrategy() for the use of fromCache parameter 452 453 audio_devices_t getNewDevice(audio_io_handle_t output, bool fromCache); 454 // updates cache of device used by all strategies (mDeviceForStrategy[]) 455 // must be called every time a condition that affects the device choice for a given strategy is 456 // changed: connected device, phone state, force use... 457 // cached values are used by getDeviceForStrategy() if parameter fromCache is true. 458 // Must be called after checkOutputForAllStrategies() 459 460 void updateDevicesAndOutputs(); 461 462 virtual uint32_t getMaxEffectsCpuLoad(); 463 virtual uint32_t getMaxEffectsMemory(); 464#ifdef AUDIO_POLICY_TEST 465 virtual bool threadLoop(); 466 void exit(); 467 int testOutputIndex(audio_io_handle_t output); 468#endif //AUDIO_POLICY_TEST 469 470 status_t setEffectEnabled(EffectDescriptor *pDesc, bool enabled); 471 472 // returns the category the device belongs to with regard to volume curve management 473 static device_category getDeviceCategory(audio_devices_t device); 474 475 // extract one device relevant for volume control from multiple device selection 476 static audio_devices_t getDeviceForVolume(audio_devices_t device); 477 478 SortedVector<audio_io_handle_t> getOutputsForDevice(audio_devices_t device, 479 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> openOutputs); 480 bool vectorsEqual(SortedVector<audio_io_handle_t>& outputs1, 481 SortedVector<audio_io_handle_t>& outputs2); 482 483 // mute/unmute strategies using an incompatible device combination 484 // if muting, wait for the audio in pcm buffer to be drained before proceeding 485 // if unmuting, unmute only after the specified delay 486 // Returns the number of ms waited 487 uint32_t checkDeviceMuteStrategies(AudioOutputDescriptor *outputDesc, 488 audio_devices_t prevDevice, 489 uint32_t delayMs); 490 491 audio_io_handle_t selectOutput(const SortedVector<audio_io_handle_t>& outputs, 492 AudioSystem::output_flags flags); 493 IOProfile *getInputProfile(audio_devices_t device, 494 uint32_t samplingRate, 495 audio_format_t format, 496 audio_channel_mask_t channelMask); 497 IOProfile *getProfileForDirectOutput(audio_devices_t device, 498 uint32_t samplingRate, 499 audio_format_t format, 500 audio_channel_mask_t channelMask, 501 audio_output_flags_t flags); 502 503 audio_io_handle_t selectOutputForEffects(const SortedVector<audio_io_handle_t>& outputs); 504 505 bool isNonOffloadableEffectEnabled(); 506 507 // 508 // Audio policy configuration file parsing (audio_policy.conf) 509 // 510 static uint32_t stringToEnum(const struct StringToEnum *table, 511 size_t size, 512 const char *name); 513 static bool stringToBool(const char *value); 514 static audio_output_flags_t parseFlagNames(char *name); 515 static audio_devices_t parseDeviceNames(char *name); 516 void loadSamplingRates(char *name, IOProfile *profile); 517 void loadFormats(char *name, IOProfile *profile); 518 void loadOutChannels(char *name, IOProfile *profile); 519 void loadInChannels(char *name, IOProfile *profile); 520 status_t loadOutput(cnode *root, HwModule *module); 521 status_t loadInput(cnode *root, HwModule *module); 522 void loadHwModule(cnode *root); 523 void loadHwModules(cnode *root); 524 void loadGlobalConfig(cnode *root); 525 status_t loadAudioPolicyConfig(const char *path); 526 void defaultAudioPolicyConfig(void); 527 528 529 AudioPolicyClientInterface *mpClientInterface; // audio policy client interface 530 audio_io_handle_t mPrimaryOutput; // primary output handle 531 // list of descriptors for outputs currently opened 532 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mOutputs; 533 // copy of mOutputs before setDeviceConnectionState() opens new outputs 534 // reset to mOutputs when updateDevicesAndOutputs() is called. 535 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mPreviousOutputs; 536 537 // list of input descriptors currently opened 538 DefaultKeyedVector<audio_io_handle_t, AudioInputDescriptor *> mInputs; 539 540 audio_devices_t mAvailableOutputDevices; // bit field of all available output devices 541 audio_devices_t mAvailableInputDevices; // bit field of all available input devices 542 // without AUDIO_DEVICE_BIT_IN to allow direct bit 543 // field comparisons 544 int mPhoneState; // current phone state 545 AudioSystem::forced_config mForceUse[AudioSystem::NUM_FORCE_USE]; // current forced use configuration 546 547 StreamDescriptor mStreams[AudioSystem::NUM_STREAM_TYPES]; // stream descriptors for volume control 548 String8 mA2dpDeviceAddress; // A2DP device MAC address 549 String8 mScoDeviceAddress; // SCO device MAC address 550 String8 mUsbOutCardAndDevice; // USB audio ALSA card and device numbers: 551 // card=<card_number>;device=<><device_number> 552 bool mLimitRingtoneVolume; // limit ringtone volume to music volume if headset connected 553 audio_devices_t mDeviceForStrategy[NUM_STRATEGIES]; 554 float mLastVoiceVolume; // last voice volume value sent to audio HAL 555 556 // Maximum CPU load allocated to audio effects in 0.1 MIPS (ARMv5TE, 0 WS memory) units 557 static const uint32_t MAX_EFFECTS_CPU_LOAD = 1000; 558 // Maximum memory allocated to audio effects in KB 559 static const uint32_t MAX_EFFECTS_MEMORY = 512; 560 uint32_t mTotalEffectsCpuLoad; // current CPU load used by effects 561 uint32_t mTotalEffectsMemory; // current memory used by effects 562 KeyedVector<int, EffectDescriptor *> mEffects; // list of registered audio effects 563 bool mA2dpSuspended; // true if A2DP output is suspended 564 bool mHasA2dp; // true on platforms with support for bluetooth A2DP 565 bool mHasUsb; // true on platforms with support for USB audio 566 bool mHasRemoteSubmix; // true on platforms with support for remote presentation of a submix 567 audio_devices_t mAttachedOutputDevices; // output devices always available on the platform 568 audio_devices_t mDefaultOutputDevice; // output device selected by default at boot time 569 // (must be in mAttachedOutputDevices) 570 bool mSpeakerDrcEnabled;// true on devices that use DRC on the DEVICE_CATEGORY_SPEAKER path 571 // to boost soft sounds, used to adjust volume curves accordingly 572 573 Vector <HwModule *> mHwModules; 574 575#ifdef AUDIO_POLICY_TEST 576 Mutex mLock; 577 Condition mWaitWorkCV; 578 579 int mCurOutput; 580 bool mDirectOutput; 581 audio_io_handle_t mTestOutputs[NUM_TEST_OUTPUTS]; 582 int mTestInput; 583 uint32_t mTestDevice; 584 uint32_t mTestSamplingRate; 585 uint32_t mTestFormat; 586 uint32_t mTestChannels; 587 uint32_t mTestLatencyMs; 588#endif //AUDIO_POLICY_TEST 589 590private: 591 static float volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc, 592 int indexInUi); 593 // updates device caching and output for streams that can influence the 594 // routing of notifications 595 void handleNotificationRoutingForStream(AudioSystem::stream_type stream); 596 static bool isVirtualInputDevice(audio_devices_t device); 597}; 598 599}; 600