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 = 0, 91 uint32_t format = AudioSystem::FORMAT_DEFAULT, 92 uint32_t channels = 0, 93 AudioSystem::output_flags flags = 94 AudioSystem::OUTPUT_FLAG_INDIRECT, 95 const audio_offload_info_t *offloadInfo = NULL); 96 virtual status_t startOutput(audio_io_handle_t output, 97 AudioSystem::stream_type stream, 98 int session = 0); 99 virtual status_t stopOutput(audio_io_handle_t output, 100 AudioSystem::stream_type stream, 101 int session = 0); 102 virtual void releaseOutput(audio_io_handle_t output); 103 virtual audio_io_handle_t getInput(int inputSource, 104 uint32_t samplingRate, 105 uint32_t format, 106 uint32_t channels, 107 AudioSystem::audio_in_acoustics acoustics); 108 109 // indicates to the audio policy manager that the input starts being used. 110 virtual status_t startInput(audio_io_handle_t input); 111 112 // indicates to the audio policy manager that the input stops being used. 113 virtual status_t stopInput(audio_io_handle_t input); 114 virtual void releaseInput(audio_io_handle_t input); 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); 150 151 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 uint32_t format, 213 uint32_t channelMask, 214 audio_output_flags_t flags) const; 215 216 void dump(int fd); 217 218 // by convention, "0' in the first entry in mSamplingRates, mChannelMasks or mFormats 219 // indicates the supported parameters should be read from the output stream 220 // after it is opened for the first time 221 Vector <uint32_t> mSamplingRates; // supported sampling rates 222 Vector <audio_channel_mask_t> mChannelMasks; // supported channel masks 223 Vector <audio_format_t> mFormats; // supported audio formats 224 audio_devices_t mSupportedDevices; // supported devices (devices this output can be 225 // routed to) 226 audio_output_flags_t mFlags; // attribute flags (e.g primary output, 227 // direct output...). For outputs only. 228 HwModule *mModule; // audio HW module exposing this I/O stream 229 }; 230 231 // default volume curve 232 static const VolumeCurvePoint sDefaultVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 233 // default volume curve for media strategy 234 static const VolumeCurvePoint sDefaultMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 235 // volume curve for media strategy on speakers 236 static const VolumeCurvePoint sSpeakerMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 237 // volume curve for sonification strategy on speakers 238 static const VolumeCurvePoint sSpeakerSonificationVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 239 static const VolumeCurvePoint sSpeakerSonificationVolumeCurveDrc[AudioPolicyManagerBase::VOLCNT]; 240 static const VolumeCurvePoint sDefaultSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 241 static const VolumeCurvePoint sDefaultSystemVolumeCurveDrc[AudioPolicyManagerBase::VOLCNT]; 242 static const VolumeCurvePoint sHeadsetSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 243 static const VolumeCurvePoint sDefaultVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 244 static const VolumeCurvePoint sSpeakerVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT]; 245 // default volume curves per stream and device category. See initializeVolumeCurves() 246 static const VolumeCurvePoint *sVolumeProfiles[AUDIO_STREAM_CNT][DEVICE_CATEGORY_CNT]; 247 248 // descriptor for audio outputs. Used to maintain current configuration of each opened audio output 249 // and keep track of the usage of this output by each audio stream type. 250 class AudioOutputDescriptor 251 { 252 public: 253 AudioOutputDescriptor(const IOProfile *profile); 254 255 status_t dump(int fd); 256 257 audio_devices_t device() const; 258 void changeRefCount(AudioSystem::stream_type stream, int delta); 259 260 bool isDuplicated() const { return (mOutput1 != NULL && mOutput2 != NULL); } 261 audio_devices_t supportedDevices(); 262 uint32_t latency(); 263 bool sharesHwModuleWith(const AudioOutputDescriptor *outputDesc); 264 bool isActive(uint32_t inPastMs = 0) const; 265 bool isStreamActive(AudioSystem::stream_type stream, 266 uint32_t inPastMs = 0, 267 nsecs_t sysTime = 0) const; 268 bool isStrategyActive(routing_strategy strategy, 269 uint32_t inPastMs = 0, 270 nsecs_t sysTime = 0) const; 271 272 audio_io_handle_t mId; // output handle 273 uint32_t mSamplingRate; // 274 audio_format_t mFormat; // 275 audio_channel_mask_t mChannelMask; // output configuration 276 uint32_t mLatency; // 277 audio_output_flags_t mFlags; // 278 audio_devices_t mDevice; // current device this output is routed to 279 uint32_t mRefCount[AudioSystem::NUM_STREAM_TYPES]; // number of streams of each type using this output 280 nsecs_t mStopTime[AudioSystem::NUM_STREAM_TYPES]; 281 AudioOutputDescriptor *mOutput1; // used by duplicated outputs: first output 282 AudioOutputDescriptor *mOutput2; // used by duplicated outputs: second output 283 float mCurVolume[AudioSystem::NUM_STREAM_TYPES]; // current stream volume 284 int mMuteCount[AudioSystem::NUM_STREAM_TYPES]; // mute request counter 285 const IOProfile *mProfile; // I/O profile this output derives from 286 bool mStrategyMutedByDevice[NUM_STRATEGIES]; // strategies muted because of incompatible 287 // device selection. See checkDeviceMuteStrategies() 288 uint32_t mDirectOpenCount; // number of clients using this output (direct outputs only) 289 }; 290 291 // descriptor for audio inputs. Used to maintain current configuration of each opened audio input 292 // and keep track of the usage of this input. 293 class AudioInputDescriptor 294 { 295 public: 296 AudioInputDescriptor(const IOProfile *profile); 297 298 status_t dump(int fd); 299 300 uint32_t mSamplingRate; // 301 audio_format_t mFormat; // input configuration 302 audio_channel_mask_t mChannelMask; // 303 audio_devices_t mDevice; // current device this input is routed to 304 uint32_t mRefCount; // number of AudioRecord clients using this output 305 int mInputSource; // input source selected by application (mediarecorder.h) 306 const IOProfile *mProfile; // I/O profile this output derives from 307 }; 308 309 // stream descriptor used for volume control 310 class StreamDescriptor 311 { 312 public: 313 StreamDescriptor(); 314 315 int getVolumeIndex(audio_devices_t device); 316 void dump(int fd); 317 318 int mIndexMin; // min volume index 319 int mIndexMax; // max volume index 320 KeyedVector<audio_devices_t, int> mIndexCur; // current volume index per device 321 bool mCanBeMuted; // true is the stream can be muted 322 323 const VolumeCurvePoint *mVolumeCurve[DEVICE_CATEGORY_CNT]; 324 }; 325 326 // stream descriptor used for volume control 327 class EffectDescriptor 328 { 329 public: 330 331 status_t dump(int fd); 332 333 int mIo; // io the effect is attached to 334 routing_strategy mStrategy; // routing strategy the effect is associated to 335 int mSession; // audio session the effect is on 336 effect_descriptor_t mDesc; // effect descriptor 337 bool mEnabled; // enabled state: CPU load being used or not 338 }; 339 340 void addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc); 341 342 // return the strategy corresponding to a given stream type 343 static routing_strategy getStrategy(AudioSystem::stream_type stream); 344 345 // return appropriate device for streams handled by the specified strategy according to current 346 // phone state, connected devices... 347 // if fromCache is true, the device is returned from mDeviceForStrategy[], 348 // otherwise it is determine by current state 349 // (device connected,phone state, force use, a2dp output...) 350 // This allows to: 351 // 1 speed up process when the state is stable (when starting or stopping an output) 352 // 2 access to either current device selection (fromCache == true) or 353 // "future" device selection (fromCache == false) when called from a context 354 // where conditions are changing (setDeviceConnectionState(), setPhoneState()...) AND 355 // before updateDevicesAndOutputs() is called. 356 virtual audio_devices_t getDeviceForStrategy(routing_strategy strategy, 357 bool fromCache); 358 359 // change the route of the specified output. Returns the number of ms we have slept to 360 // allow new routing to take effect in certain cases. 361 uint32_t setOutputDevice(audio_io_handle_t output, 362 audio_devices_t device, 363 bool force = false, 364 int delayMs = 0); 365 366 // select input device corresponding to requested audio source 367 virtual audio_devices_t getDeviceForInputSource(int inputSource); 368 369 // return io handle of active input or 0 if no input is active 370 // Only considers inputs from physical devices (e.g. main mic, headset mic) when 371 // ignoreVirtualInputs is true. 372 audio_io_handle_t getActiveInput(bool ignoreVirtualInputs = true); 373 374 // initialize volume curves for each strategy and device category 375 void initializeVolumeCurves(); 376 377 // compute the actual volume for a given stream according to the requested index and a particular 378 // device 379 virtual float computeVolume(int stream, int index, audio_io_handle_t output, audio_devices_t device); 380 381 // check that volume change is permitted, compute and send new volume to audio hardware 382 status_t checkAndSetVolume(int stream, int index, audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false); 383 384 // apply all stream volumes to the specified output and device 385 void applyStreamVolumes(audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false); 386 387 // Mute or unmute all streams handled by the specified strategy on the specified output 388 void setStrategyMute(routing_strategy strategy, 389 bool on, 390 audio_io_handle_t output, 391 int delayMs = 0, 392 audio_devices_t device = (audio_devices_t)0); 393 394 // Mute or unmute the stream on the specified output 395 void setStreamMute(int stream, 396 bool on, 397 audio_io_handle_t output, 398 int delayMs = 0, 399 audio_devices_t device = (audio_devices_t)0); 400 401 // handle special cases for sonification strategy while in call: mute streams or replace by 402 // a special tone in the device used for communication 403 void handleIncallSonification(int stream, bool starting, bool stateChange); 404 405 // true if device is in a telephony or VoIP call 406 virtual bool isInCall(); 407 408 // true if given state represents a device in a telephony or VoIP call 409 virtual bool isStateInCall(int state); 410 411 // when a device is connected, checks if an open output can be routed 412 // to this device. If none is open, tries to open one of the available outputs. 413 // Returns an output suitable to this device or 0. 414 // when a device is disconnected, checks if an output is not used any more and 415 // returns its handle if any. 416 // transfers the audio tracks and effects from one output thread to another accordingly. 417 status_t checkOutputsForDevice(audio_devices_t device, 418 AudioSystem::device_connection_state state, 419 SortedVector<audio_io_handle_t>& outputs); 420 421 // close an output and its companion duplicating output. 422 void closeOutput(audio_io_handle_t output); 423 424 // checks and if necessary changes outputs used for all strategies. 425 // must be called every time a condition that affects the output choice for a given strategy 426 // changes: connected device, phone state, force use... 427 // Must be called before updateDevicesAndOutputs() 428 void checkOutputForStrategy(routing_strategy strategy); 429 430 // Same as checkOutputForStrategy() but for a all strategies in order of priority 431 void checkOutputForAllStrategies(); 432 433 // manages A2DP output suspend/restore according to phone state and BT SCO usage 434 void checkA2dpSuspend(); 435 436 // returns the A2DP output handle if it is open or 0 otherwise 437 audio_io_handle_t getA2dpOutput(); 438 439 // selects the most appropriate device on output for current state 440 // must be called every time a condition that affects the device choice for a given output is 441 // changed: connected device, phone state, force use, output start, output stop.. 442 // see getDeviceForStrategy() for the use of fromCache parameter 443 444 audio_devices_t getNewDevice(audio_io_handle_t output, bool fromCache); 445 // updates cache of device used by all strategies (mDeviceForStrategy[]) 446 // must be called every time a condition that affects the device choice for a given strategy is 447 // changed: connected device, phone state, force use... 448 // cached values are used by getDeviceForStrategy() if parameter fromCache is true. 449 // Must be called after checkOutputForAllStrategies() 450 451 void updateDevicesAndOutputs(); 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_io_handle_t selectOutputForEffects(const SortedVector<audio_io_handle_t>& outputs); 495 496 bool isNonOffloadableEffectEnabled(); 497 498 // 499 // Audio policy configuration file parsing (audio_policy.conf) 500 // 501 static uint32_t stringToEnum(const struct StringToEnum *table, 502 size_t size, 503 const char *name); 504 static bool stringToBool(const char *value); 505 static audio_output_flags_t parseFlagNames(char *name); 506 static audio_devices_t parseDeviceNames(char *name); 507 void loadSamplingRates(char *name, IOProfile *profile); 508 void loadFormats(char *name, IOProfile *profile); 509 void loadOutChannels(char *name, IOProfile *profile); 510 void loadInChannels(char *name, IOProfile *profile); 511 status_t loadOutput(cnode *root, HwModule *module); 512 status_t loadInput(cnode *root, HwModule *module); 513 void loadHwModule(cnode *root); 514 void loadHwModules(cnode *root); 515 void loadGlobalConfig(cnode *root); 516 status_t loadAudioPolicyConfig(const char *path); 517 void defaultAudioPolicyConfig(void); 518 519 520 AudioPolicyClientInterface *mpClientInterface; // audio policy client interface 521 audio_io_handle_t mPrimaryOutput; // primary output handle 522 // list of descriptors for outputs currently opened 523 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mOutputs; 524 // copy of mOutputs before setDeviceConnectionState() opens new outputs 525 // reset to mOutputs when updateDevicesAndOutputs() is called. 526 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mPreviousOutputs; 527 DefaultKeyedVector<audio_io_handle_t, AudioInputDescriptor *> mInputs; // list of input descriptors 528 audio_devices_t mAvailableOutputDevices; // bit field of all available output devices 529 audio_devices_t mAvailableInputDevices; // bit field of all available input devices 530 // without AUDIO_DEVICE_BIT_IN to allow direct bit 531 // field comparisons 532 int mPhoneState; // current phone state 533 AudioSystem::forced_config mForceUse[AudioSystem::NUM_FORCE_USE]; // current forced use configuration 534 535 StreamDescriptor mStreams[AudioSystem::NUM_STREAM_TYPES]; // stream descriptors for volume control 536 String8 mA2dpDeviceAddress; // A2DP device MAC address 537 String8 mScoDeviceAddress; // SCO device MAC address 538 String8 mUsbCardAndDevice; // USB audio ALSA card and device numbers: 539 // card=<card_number>;device=<><device_number> 540 bool mLimitRingtoneVolume; // limit ringtone volume to music volume if headset connected 541 audio_devices_t mDeviceForStrategy[NUM_STRATEGIES]; 542 float mLastVoiceVolume; // last voice volume value sent to audio HAL 543 544 // Maximum CPU load allocated to audio effects in 0.1 MIPS (ARMv5TE, 0 WS memory) units 545 static const uint32_t MAX_EFFECTS_CPU_LOAD = 1000; 546 // Maximum memory allocated to audio effects in KB 547 static const uint32_t MAX_EFFECTS_MEMORY = 512; 548 uint32_t mTotalEffectsCpuLoad; // current CPU load used by effects 549 uint32_t mTotalEffectsMemory; // current memory used by effects 550 KeyedVector<int, EffectDescriptor *> mEffects; // list of registered audio effects 551 bool mA2dpSuspended; // true if A2DP output is suspended 552 bool mHasA2dp; // true on platforms with support for bluetooth A2DP 553 bool mHasUsb; // true on platforms with support for USB audio 554 bool mHasRemoteSubmix; // true on platforms with support for remote presentation of a submix 555 audio_devices_t mAttachedOutputDevices; // output devices always available on the platform 556 audio_devices_t mDefaultOutputDevice; // output device selected by default at boot time 557 // (must be in mAttachedOutputDevices) 558 bool mSpeakerDrcEnabled;// true on devices that use DRC on the DEVICE_CATEGORY_SPEAKER path 559 // to boost soft sounds, used to adjust volume curves accordingly 560 561 Vector <HwModule *> mHwModules; 562 563 #ifdef AUDIO_POLICY_TEST 564 Mutex mLock; 565 Condition mWaitWorkCV; 566 567 int mCurOutput; 568 bool mDirectOutput; 569 audio_io_handle_t mTestOutputs[NUM_TEST_OUTPUTS]; 570 int mTestInput; 571 uint32_t mTestDevice; 572 uint32_t mTestSamplingRate; 573 uint32_t mTestFormat; 574 uint32_t mTestChannels; 575 uint32_t mTestLatencyMs; 576 #endif //AUDIO_POLICY_TEST 577 578 private: 579 static float volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc, 580 int indexInUi); 581 // updates device caching and output for streams that can influence the 582 // routing of notifications 583 void handleNotificationRoutingForStream(AudioSystem::stream_type stream); 584 static bool isVirtualInputDevice(audio_devices_t device); 585 }; 586 587 }; 588
