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