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