AudioPolicyManager.cpp revision a204994e7dd7dab931297176c66b5d3b82e2c90b
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#define LOG_TAG "AudioPolicyManager" 18//#define LOG_NDEBUG 0 19 20//#define VERY_VERBOSE_LOGGING 21#ifdef VERY_VERBOSE_LOGGING 22#define ALOGVV ALOGV 23#else 24#define ALOGVV(a...) do { } while(0) 25#endif 26 27// A device mask for all audio input devices that are considered "virtual" when evaluating 28// active inputs in getActiveInput() 29#define APM_AUDIO_IN_DEVICE_VIRTUAL_ALL AUDIO_DEVICE_IN_REMOTE_SUBMIX 30// A device mask for all audio output devices that are considered "remote" when evaluating 31// active output devices in isStreamActiveRemotely() 32#define APM_AUDIO_OUT_DEVICE_REMOTE_ALL AUDIO_DEVICE_OUT_REMOTE_SUBMIX 33 34#include <inttypes.h> 35#include <math.h> 36 37#include <cutils/properties.h> 38#include <utils/Log.h> 39#include <hardware/audio.h> 40#include <hardware/audio_effect.h> 41#include <media/AudioParameter.h> 42#include "AudioPolicyManager.h" 43#include "audio_policy_conf.h" 44 45namespace android { 46 47// ---------------------------------------------------------------------------- 48// Definitions for audio_policy.conf file parsing 49// ---------------------------------------------------------------------------- 50 51struct StringToEnum { 52 const char *name; 53 uint32_t value; 54}; 55 56#define STRING_TO_ENUM(string) { #string, string } 57#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) 58 59const StringToEnum sDeviceNameToEnumTable[] = { 60 STRING_TO_ENUM(AUDIO_DEVICE_OUT_EARPIECE), 61 STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPEAKER), 62 STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADSET), 63 STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADPHONE), 64 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO), 65 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET), 66 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT), 67 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_SCO), 68 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP), 69 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES), 70 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER), 71 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_A2DP), 72 STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_DIGITAL), 73 STRING_TO_ENUM(AUDIO_DEVICE_OUT_HDMI), 74 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET), 75 STRING_TO_ENUM(AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET), 76 STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_ACCESSORY), 77 STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_DEVICE), 78 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_USB), 79 STRING_TO_ENUM(AUDIO_DEVICE_OUT_REMOTE_SUBMIX), 80 STRING_TO_ENUM(AUDIO_DEVICE_OUT_TELEPHONY_TX), 81 STRING_TO_ENUM(AUDIO_DEVICE_OUT_LINE), 82 STRING_TO_ENUM(AUDIO_DEVICE_OUT_HDMI_ARC), 83 STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPDIF), 84 STRING_TO_ENUM(AUDIO_DEVICE_OUT_FM), 85 STRING_TO_ENUM(AUDIO_DEVICE_IN_BUILTIN_MIC), 86 STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET), 87 STRING_TO_ENUM(AUDIO_DEVICE_IN_ALL_SCO), 88 STRING_TO_ENUM(AUDIO_DEVICE_IN_WIRED_HEADSET), 89 STRING_TO_ENUM(AUDIO_DEVICE_IN_AUX_DIGITAL), 90 STRING_TO_ENUM(AUDIO_DEVICE_IN_HDMI), 91 STRING_TO_ENUM(AUDIO_DEVICE_IN_VOICE_CALL), 92 STRING_TO_ENUM(AUDIO_DEVICE_IN_TELEPHONY_RX), 93 STRING_TO_ENUM(AUDIO_DEVICE_IN_BACK_MIC), 94 STRING_TO_ENUM(AUDIO_DEVICE_IN_REMOTE_SUBMIX), 95 STRING_TO_ENUM(AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET), 96 STRING_TO_ENUM(AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET), 97 STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_ACCESSORY), 98 STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_DEVICE), 99 STRING_TO_ENUM(AUDIO_DEVICE_IN_FM_TUNER), 100 STRING_TO_ENUM(AUDIO_DEVICE_IN_TV_TUNER), 101 STRING_TO_ENUM(AUDIO_DEVICE_IN_LINE), 102 STRING_TO_ENUM(AUDIO_DEVICE_IN_SPDIF), 103 STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_A2DP), 104 STRING_TO_ENUM(AUDIO_DEVICE_IN_LOOPBACK), 105}; 106 107const StringToEnum sFlagNameToEnumTable[] = { 108 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DIRECT), 109 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_PRIMARY), 110 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_FAST), 111 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DEEP_BUFFER), 112 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD), 113 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_NON_BLOCKING), 114}; 115 116const StringToEnum sFormatNameToEnumTable[] = { 117 STRING_TO_ENUM(AUDIO_FORMAT_PCM_16_BIT), 118 STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_BIT), 119 STRING_TO_ENUM(AUDIO_FORMAT_PCM_32_BIT), 120 STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_24_BIT), 121 STRING_TO_ENUM(AUDIO_FORMAT_PCM_FLOAT), 122 STRING_TO_ENUM(AUDIO_FORMAT_PCM_24_BIT_PACKED), 123 STRING_TO_ENUM(AUDIO_FORMAT_MP3), 124 STRING_TO_ENUM(AUDIO_FORMAT_AAC), 125 STRING_TO_ENUM(AUDIO_FORMAT_AAC_MAIN), 126 STRING_TO_ENUM(AUDIO_FORMAT_AAC_LC), 127 STRING_TO_ENUM(AUDIO_FORMAT_AAC_SSR), 128 STRING_TO_ENUM(AUDIO_FORMAT_AAC_LTP), 129 STRING_TO_ENUM(AUDIO_FORMAT_AAC_HE_V1), 130 STRING_TO_ENUM(AUDIO_FORMAT_AAC_SCALABLE), 131 STRING_TO_ENUM(AUDIO_FORMAT_AAC_ERLC), 132 STRING_TO_ENUM(AUDIO_FORMAT_AAC_LD), 133 STRING_TO_ENUM(AUDIO_FORMAT_AAC_HE_V2), 134 STRING_TO_ENUM(AUDIO_FORMAT_AAC_ELD), 135 STRING_TO_ENUM(AUDIO_FORMAT_VORBIS), 136 STRING_TO_ENUM(AUDIO_FORMAT_HE_AAC_V1), 137 STRING_TO_ENUM(AUDIO_FORMAT_HE_AAC_V2), 138 STRING_TO_ENUM(AUDIO_FORMAT_OPUS), 139 STRING_TO_ENUM(AUDIO_FORMAT_AC3), 140 STRING_TO_ENUM(AUDIO_FORMAT_E_AC3), 141}; 142 143const StringToEnum sOutChannelsNameToEnumTable[] = { 144 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_MONO), 145 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO), 146 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1), 147 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1), 148}; 149 150const StringToEnum sInChannelsNameToEnumTable[] = { 151 STRING_TO_ENUM(AUDIO_CHANNEL_IN_MONO), 152 STRING_TO_ENUM(AUDIO_CHANNEL_IN_STEREO), 153 STRING_TO_ENUM(AUDIO_CHANNEL_IN_FRONT_BACK), 154}; 155 156const StringToEnum sGainModeNameToEnumTable[] = { 157 STRING_TO_ENUM(AUDIO_GAIN_MODE_JOINT), 158 STRING_TO_ENUM(AUDIO_GAIN_MODE_CHANNELS), 159 STRING_TO_ENUM(AUDIO_GAIN_MODE_RAMP), 160}; 161 162 163uint32_t AudioPolicyManager::stringToEnum(const struct StringToEnum *table, 164 size_t size, 165 const char *name) 166{ 167 for (size_t i = 0; i < size; i++) { 168 if (strcmp(table[i].name, name) == 0) { 169 ALOGV("stringToEnum() found %s", table[i].name); 170 return table[i].value; 171 } 172 } 173 return 0; 174} 175 176const char *AudioPolicyManager::enumToString(const struct StringToEnum *table, 177 size_t size, 178 uint32_t value) 179{ 180 for (size_t i = 0; i < size; i++) { 181 if (table[i].value == value) { 182 return table[i].name; 183 } 184 } 185 return ""; 186} 187 188bool AudioPolicyManager::stringToBool(const char *value) 189{ 190 return ((strcasecmp("true", value) == 0) || (strcmp("1", value) == 0)); 191} 192 193 194// ---------------------------------------------------------------------------- 195// AudioPolicyInterface implementation 196// ---------------------------------------------------------------------------- 197 198 199status_t AudioPolicyManager::setDeviceConnectionState(audio_devices_t device, 200 audio_policy_dev_state_t state, 201 const char *device_address) 202{ 203 String8 address = String8(device_address); 204 205 ALOGV("setDeviceConnectionState() device: %x, state %d, address %s", device, state, device_address); 206 207 // connect/disconnect only 1 device at a time 208 if (!audio_is_output_device(device) && !audio_is_input_device(device)) return BAD_VALUE; 209 210 // handle output devices 211 if (audio_is_output_device(device)) { 212 SortedVector <audio_io_handle_t> outputs; 213 214 sp<DeviceDescriptor> devDesc = new DeviceDescriptor(String8(""), device); 215 devDesc->mAddress = address; 216 ssize_t index = mAvailableOutputDevices.indexOf(devDesc); 217 218 // save a copy of the opened output descriptors before any output is opened or closed 219 // by checkOutputsForDevice(). This will be needed by checkOutputForAllStrategies() 220 mPreviousOutputs = mOutputs; 221 switch (state) 222 { 223 // handle output device connection 224 case AUDIO_POLICY_DEVICE_STATE_AVAILABLE: 225 if (index >= 0) { 226 ALOGW("setDeviceConnectionState() device already connected: %x", device); 227 return INVALID_OPERATION; 228 } 229 ALOGV("setDeviceConnectionState() connecting device %x", device); 230 231 if (checkOutputsForDevice(device, state, outputs, address) != NO_ERROR) { 232 return INVALID_OPERATION; 233 } 234 // outputs should never be empty here 235 ALOG_ASSERT(outputs.size() != 0, "setDeviceConnectionState():" 236 "checkOutputsForDevice() returned no outputs but status OK"); 237 ALOGV("setDeviceConnectionState() checkOutputsForDevice() returned %zu outputs", 238 outputs.size()); 239 // register new device as available 240 index = mAvailableOutputDevices.add(devDesc); 241 if (index >= 0) { 242 mAvailableOutputDevices[index]->mId = nextUniqueId(); 243 sp<HwModule> module = getModuleForDevice(device); 244 ALOG_ASSERT(module != NULL, "setDeviceConnectionState():" 245 "could not find HW module for device %08x", device); 246 mAvailableOutputDevices[index]->mModule = module; 247 } else { 248 return NO_MEMORY; 249 } 250 251 break; 252 // handle output device disconnection 253 case AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE: { 254 if (index < 0) { 255 ALOGW("setDeviceConnectionState() device not connected: %x", device); 256 return INVALID_OPERATION; 257 } 258 259 ALOGV("setDeviceConnectionState() disconnecting device %x", device); 260 // remove device from available output devices 261 mAvailableOutputDevices.remove(devDesc); 262 263 checkOutputsForDevice(device, state, outputs, address); 264 // not currently handling multiple simultaneous submixes: ignoring remote submix 265 // case and address 266 } break; 267 268 default: 269 ALOGE("setDeviceConnectionState() invalid state: %x", state); 270 return BAD_VALUE; 271 } 272 273 // checkA2dpSuspend must run before checkOutputForAllStrategies so that A2DP 274 // output is suspended before any tracks are moved to it 275 checkA2dpSuspend(); 276 checkOutputForAllStrategies(); 277 // outputs must be closed after checkOutputForAllStrategies() is executed 278 if (!outputs.isEmpty()) { 279 for (size_t i = 0; i < outputs.size(); i++) { 280 sp<AudioOutputDescriptor> desc = mOutputs.valueFor(outputs[i]); 281 // close unused outputs after device disconnection or direct outputs that have been 282 // opened by checkOutputsForDevice() to query dynamic parameters 283 if ((state == AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE) || 284 (((desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) != 0) && 285 (desc->mDirectOpenCount == 0))) { 286 closeOutput(outputs[i]); 287 } 288 } 289 // check again after closing A2DP output to reset mA2dpSuspended if needed 290 checkA2dpSuspend(); 291 } 292 293 updateDevicesAndOutputs(); 294 for (size_t i = 0; i < mOutputs.size(); i++) { 295 // do not force device change on duplicated output because if device is 0, it will 296 // also force a device 0 for the two outputs it is duplicated to which may override 297 // a valid device selection on those outputs. 298 setOutputDevice(mOutputs.keyAt(i), 299 getNewOutputDevice(mOutputs.keyAt(i), true /*fromCache*/), 300 !mOutputs.valueAt(i)->isDuplicated(), 301 0); 302 } 303 304 mpClientInterface->onAudioPortListUpdate(); 305 return NO_ERROR; 306 } // end if is output device 307 308 // handle input devices 309 if (audio_is_input_device(device)) { 310 SortedVector <audio_io_handle_t> inputs; 311 312 sp<DeviceDescriptor> devDesc = new DeviceDescriptor(String8(""), device); 313 devDesc->mAddress = address; 314 ssize_t index = mAvailableInputDevices.indexOf(devDesc); 315 switch (state) 316 { 317 // handle input device connection 318 case AUDIO_POLICY_DEVICE_STATE_AVAILABLE: { 319 if (index >= 0) { 320 ALOGW("setDeviceConnectionState() device already connected: %d", device); 321 return INVALID_OPERATION; 322 } 323 sp<HwModule> module = getModuleForDevice(device); 324 if (module == NULL) { 325 ALOGW("setDeviceConnectionState(): could not find HW module for device %08x", 326 device); 327 return INVALID_OPERATION; 328 } 329 if (checkInputsForDevice(device, state, inputs, address) != NO_ERROR) { 330 return INVALID_OPERATION; 331 } 332 333 index = mAvailableInputDevices.add(devDesc); 334 if (index >= 0) { 335 mAvailableInputDevices[index]->mId = nextUniqueId(); 336 mAvailableInputDevices[index]->mModule = module; 337 } else { 338 return NO_MEMORY; 339 } 340 } break; 341 342 // handle input device disconnection 343 case AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE: { 344 if (index < 0) { 345 ALOGW("setDeviceConnectionState() device not connected: %d", device); 346 return INVALID_OPERATION; 347 } 348 checkInputsForDevice(device, state, inputs, address); 349 mAvailableInputDevices.remove(devDesc); 350 } break; 351 352 default: 353 ALOGE("setDeviceConnectionState() invalid state: %x", state); 354 return BAD_VALUE; 355 } 356 357 closeAllInputs(); 358 359 mpClientInterface->onAudioPortListUpdate(); 360 return NO_ERROR; 361 } // end if is input device 362 363 ALOGW("setDeviceConnectionState() invalid device: %x", device); 364 return BAD_VALUE; 365} 366 367audio_policy_dev_state_t AudioPolicyManager::getDeviceConnectionState(audio_devices_t device, 368 const char *device_address) 369{ 370 audio_policy_dev_state_t state = AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 371 String8 address = String8(device_address); 372 sp<DeviceDescriptor> devDesc = new DeviceDescriptor(String8(""), device); 373 devDesc->mAddress = String8(device_address); 374 ssize_t index; 375 DeviceVector *deviceVector; 376 377 if (audio_is_output_device(device)) { 378 deviceVector = &mAvailableOutputDevices; 379 } else if (audio_is_input_device(device)) { 380 deviceVector = &mAvailableInputDevices; 381 } else { 382 ALOGW("getDeviceConnectionState() invalid device type %08x", device); 383 return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 384 } 385 386 index = deviceVector->indexOf(devDesc); 387 if (index >= 0) { 388 return AUDIO_POLICY_DEVICE_STATE_AVAILABLE; 389 } else { 390 return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 391 } 392} 393 394void AudioPolicyManager::setPhoneState(audio_mode_t state) 395{ 396 ALOGV("setPhoneState() state %d", state); 397 audio_devices_t newDevice = AUDIO_DEVICE_NONE; 398 if (state < 0 || state >= AUDIO_MODE_CNT) { 399 ALOGW("setPhoneState() invalid state %d", state); 400 return; 401 } 402 403 if (state == mPhoneState ) { 404 ALOGW("setPhoneState() setting same state %d", state); 405 return; 406 } 407 408 // if leaving call state, handle special case of active streams 409 // pertaining to sonification strategy see handleIncallSonification() 410 if (isInCall()) { 411 ALOGV("setPhoneState() in call state management: new state is %d", state); 412 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 413 handleIncallSonification((audio_stream_type_t)stream, false, true); 414 } 415 } 416 417 // store previous phone state for management of sonification strategy below 418 int oldState = mPhoneState; 419 mPhoneState = state; 420 bool force = false; 421 422 // are we entering or starting a call 423 if (!isStateInCall(oldState) && isStateInCall(state)) { 424 ALOGV(" Entering call in setPhoneState()"); 425 // force routing command to audio hardware when starting a call 426 // even if no device change is needed 427 force = true; 428 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { 429 mStreams[AUDIO_STREAM_DTMF].mVolumeCurve[j] = 430 sVolumeProfiles[AUDIO_STREAM_VOICE_CALL][j]; 431 } 432 } else if (isStateInCall(oldState) && !isStateInCall(state)) { 433 ALOGV(" Exiting call in setPhoneState()"); 434 // force routing command to audio hardware when exiting a call 435 // even if no device change is needed 436 force = true; 437 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { 438 mStreams[AUDIO_STREAM_DTMF].mVolumeCurve[j] = 439 sVolumeProfiles[AUDIO_STREAM_DTMF][j]; 440 } 441 } else if (isStateInCall(state) && (state != oldState)) { 442 ALOGV(" Switching between telephony and VoIP in setPhoneState()"); 443 // force routing command to audio hardware when switching between telephony and VoIP 444 // even if no device change is needed 445 force = true; 446 } 447 448 // check for device and output changes triggered by new phone state 449 newDevice = getNewOutputDevice(mPrimaryOutput, false /*fromCache*/); 450 checkA2dpSuspend(); 451 checkOutputForAllStrategies(); 452 updateDevicesAndOutputs(); 453 454 sp<AudioOutputDescriptor> hwOutputDesc = mOutputs.valueFor(mPrimaryOutput); 455 456 // force routing command to audio hardware when ending call 457 // even if no device change is needed 458 if (isStateInCall(oldState) && newDevice == AUDIO_DEVICE_NONE) { 459 newDevice = hwOutputDesc->device(); 460 } 461 462 int delayMs = 0; 463 if (isStateInCall(state)) { 464 nsecs_t sysTime = systemTime(); 465 for (size_t i = 0; i < mOutputs.size(); i++) { 466 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 467 // mute media and sonification strategies and delay device switch by the largest 468 // latency of any output where either strategy is active. 469 // This avoid sending the ring tone or music tail into the earpiece or headset. 470 if ((desc->isStrategyActive(STRATEGY_MEDIA, 471 SONIFICATION_HEADSET_MUSIC_DELAY, 472 sysTime) || 473 desc->isStrategyActive(STRATEGY_SONIFICATION, 474 SONIFICATION_HEADSET_MUSIC_DELAY, 475 sysTime)) && 476 (delayMs < (int)desc->mLatency*2)) { 477 delayMs = desc->mLatency*2; 478 } 479 setStrategyMute(STRATEGY_MEDIA, true, mOutputs.keyAt(i)); 480 setStrategyMute(STRATEGY_MEDIA, false, mOutputs.keyAt(i), MUTE_TIME_MS, 481 getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/)); 482 setStrategyMute(STRATEGY_SONIFICATION, true, mOutputs.keyAt(i)); 483 setStrategyMute(STRATEGY_SONIFICATION, false, mOutputs.keyAt(i), MUTE_TIME_MS, 484 getDeviceForStrategy(STRATEGY_SONIFICATION, true /*fromCache*/)); 485 } 486 } 487 488 // change routing is necessary 489 setOutputDevice(mPrimaryOutput, newDevice, force, delayMs); 490 491 // if entering in call state, handle special case of active streams 492 // pertaining to sonification strategy see handleIncallSonification() 493 if (isStateInCall(state)) { 494 ALOGV("setPhoneState() in call state management: new state is %d", state); 495 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 496 handleIncallSonification((audio_stream_type_t)stream, true, true); 497 } 498 } 499 500 // Flag that ringtone volume must be limited to music volume until we exit MODE_RINGTONE 501 if (state == AUDIO_MODE_RINGTONE && 502 isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY)) { 503 mLimitRingtoneVolume = true; 504 } else { 505 mLimitRingtoneVolume = false; 506 } 507} 508 509void AudioPolicyManager::setForceUse(audio_policy_force_use_t usage, 510 audio_policy_forced_cfg_t config) 511{ 512 ALOGV("setForceUse() usage %d, config %d, mPhoneState %d", usage, config, mPhoneState); 513 514 bool forceVolumeReeval = false; 515 switch(usage) { 516 case AUDIO_POLICY_FORCE_FOR_COMMUNICATION: 517 if (config != AUDIO_POLICY_FORCE_SPEAKER && config != AUDIO_POLICY_FORCE_BT_SCO && 518 config != AUDIO_POLICY_FORCE_NONE) { 519 ALOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config); 520 return; 521 } 522 forceVolumeReeval = true; 523 mForceUse[usage] = config; 524 break; 525 case AUDIO_POLICY_FORCE_FOR_MEDIA: 526 if (config != AUDIO_POLICY_FORCE_HEADPHONES && config != AUDIO_POLICY_FORCE_BT_A2DP && 527 config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && 528 config != AUDIO_POLICY_FORCE_ANALOG_DOCK && 529 config != AUDIO_POLICY_FORCE_DIGITAL_DOCK && config != AUDIO_POLICY_FORCE_NONE && 530 config != AUDIO_POLICY_FORCE_NO_BT_A2DP) { 531 ALOGW("setForceUse() invalid config %d for FOR_MEDIA", config); 532 return; 533 } 534 mForceUse[usage] = config; 535 break; 536 case AUDIO_POLICY_FORCE_FOR_RECORD: 537 if (config != AUDIO_POLICY_FORCE_BT_SCO && config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && 538 config != AUDIO_POLICY_FORCE_NONE) { 539 ALOGW("setForceUse() invalid config %d for FOR_RECORD", config); 540 return; 541 } 542 mForceUse[usage] = config; 543 break; 544 case AUDIO_POLICY_FORCE_FOR_DOCK: 545 if (config != AUDIO_POLICY_FORCE_NONE && config != AUDIO_POLICY_FORCE_BT_CAR_DOCK && 546 config != AUDIO_POLICY_FORCE_BT_DESK_DOCK && 547 config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && 548 config != AUDIO_POLICY_FORCE_ANALOG_DOCK && 549 config != AUDIO_POLICY_FORCE_DIGITAL_DOCK) { 550 ALOGW("setForceUse() invalid config %d for FOR_DOCK", config); 551 } 552 forceVolumeReeval = true; 553 mForceUse[usage] = config; 554 break; 555 case AUDIO_POLICY_FORCE_FOR_SYSTEM: 556 if (config != AUDIO_POLICY_FORCE_NONE && 557 config != AUDIO_POLICY_FORCE_SYSTEM_ENFORCED) { 558 ALOGW("setForceUse() invalid config %d for FOR_SYSTEM", config); 559 } 560 forceVolumeReeval = true; 561 mForceUse[usage] = config; 562 break; 563 case AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO: 564 if (config != AUDIO_POLICY_FORCE_NONE && 565 config != AUDIO_POLICY_FORCE_HDMI_SYSTEM_AUDIO_ENFORCED) { 566 ALOGW("setForceUse() invalid config %d forHDMI_SYSTEM_AUDIO", config); 567 } 568 mForceUse[usage] = config; 569 break; 570 default: 571 ALOGW("setForceUse() invalid usage %d", usage); 572 break; 573 } 574 575 // check for device and output changes triggered by new force usage 576 checkA2dpSuspend(); 577 checkOutputForAllStrategies(); 578 updateDevicesAndOutputs(); 579 for (size_t i = 0; i < mOutputs.size(); i++) { 580 audio_io_handle_t output = mOutputs.keyAt(i); 581 audio_devices_t newDevice = getNewOutputDevice(output, true /*fromCache*/); 582 setOutputDevice(output, newDevice, (newDevice != AUDIO_DEVICE_NONE)); 583 if (forceVolumeReeval && (newDevice != AUDIO_DEVICE_NONE)) { 584 applyStreamVolumes(output, newDevice, 0, true); 585 } 586 } 587 588 audio_io_handle_t activeInput = getActiveInput(); 589 if (activeInput != 0) { 590 setInputDevice(activeInput, getNewInputDevice(activeInput)); 591 } 592 593} 594 595audio_policy_forced_cfg_t AudioPolicyManager::getForceUse(audio_policy_force_use_t usage) 596{ 597 return mForceUse[usage]; 598} 599 600void AudioPolicyManager::setSystemProperty(const char* property, const char* value) 601{ 602 ALOGV("setSystemProperty() property %s, value %s", property, value); 603} 604 605// Find a direct output profile compatible with the parameters passed, even if the input flags do 606// not explicitly request a direct output 607sp<AudioPolicyManager::IOProfile> AudioPolicyManager::getProfileForDirectOutput( 608 audio_devices_t device, 609 uint32_t samplingRate, 610 audio_format_t format, 611 audio_channel_mask_t channelMask, 612 audio_output_flags_t flags) 613{ 614 for (size_t i = 0; i < mHwModules.size(); i++) { 615 if (mHwModules[i]->mHandle == 0) { 616 continue; 617 } 618 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) { 619 sp<IOProfile> profile = mHwModules[i]->mOutputProfiles[j]; 620 bool found = false; 621 if (flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) { 622 if (profile->isCompatibleProfile(device, samplingRate, format, 623 channelMask, 624 AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)) { 625 found = true; 626 } 627 } else { 628 if (profile->isCompatibleProfile(device, samplingRate, format, 629 channelMask, 630 AUDIO_OUTPUT_FLAG_DIRECT)) { 631 found = true; 632 } 633 } 634 if (found && (mAvailableOutputDevices.types() & profile->mSupportedDevices.types())) { 635 return profile; 636 } 637 } 638 } 639 return 0; 640} 641 642audio_io_handle_t AudioPolicyManager::getOutput(audio_stream_type_t stream, 643 uint32_t samplingRate, 644 audio_format_t format, 645 audio_channel_mask_t channelMask, 646 audio_output_flags_t flags, 647 const audio_offload_info_t *offloadInfo) 648{ 649 650 routing_strategy strategy = getStrategy(stream); 651 audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/); 652 ALOGV("getOutput() device %d, stream %d, samplingRate %d, format %x, channelMask %x, flags %x", 653 device, stream, samplingRate, format, channelMask, flags); 654 655 return getOutputForDevice(device, stream, samplingRate,format, channelMask, flags, 656 offloadInfo); 657} 658 659audio_io_handle_t AudioPolicyManager::getOutputForAttr(const audio_attributes_t *attr, 660 uint32_t samplingRate, 661 audio_format_t format, 662 audio_channel_mask_t channelMask, 663 audio_output_flags_t flags, 664 const audio_offload_info_t *offloadInfo) 665{ 666 if (attr == NULL) { 667 ALOGE("getOutputForAttr() called with NULL audio attributes"); 668 return 0; 669 } 670 ALOGV("getOutputForAttr() usage=%d, content=%d, tag=%s", 671 attr->usage, attr->content_type, attr->tags); 672 673 // TODO this is where filtering for custom policies (rerouting, dynamic sources) will go 674 routing_strategy strategy = (routing_strategy) getStrategyForAttr(attr); 675 audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/); 676 ALOGV("getOutputForAttr() device %d, samplingRate %d, format %x, channelMask %x, flags %x", 677 device, samplingRate, format, channelMask, flags); 678 679 audio_stream_type_t stream = streamTypefromAttributesInt(attr); 680 return getOutputForDevice(device, stream, samplingRate, format, channelMask, flags, 681 offloadInfo); 682} 683 684audio_io_handle_t AudioPolicyManager::getOutputForDevice( 685 audio_devices_t device, 686 audio_stream_type_t stream, 687 uint32_t samplingRate, 688 audio_format_t format, 689 audio_channel_mask_t channelMask, 690 audio_output_flags_t flags, 691 const audio_offload_info_t *offloadInfo) 692{ 693 audio_io_handle_t output = 0; 694 uint32_t latency = 0; 695 696#ifdef AUDIO_POLICY_TEST 697 if (mCurOutput != 0) { 698 ALOGV("getOutput() test output mCurOutput %d, samplingRate %d, format %d, channelMask %x, mDirectOutput %d", 699 mCurOutput, mTestSamplingRate, mTestFormat, mTestChannels, mDirectOutput); 700 701 if (mTestOutputs[mCurOutput] == 0) { 702 ALOGV("getOutput() opening test output"); 703 sp<AudioOutputDescriptor> outputDesc = new AudioOutputDescriptor(NULL); 704 outputDesc->mDevice = mTestDevice; 705 outputDesc->mSamplingRate = mTestSamplingRate; 706 outputDesc->mFormat = mTestFormat; 707 outputDesc->mChannelMask = mTestChannels; 708 outputDesc->mLatency = mTestLatencyMs; 709 outputDesc->mFlags = 710 (audio_output_flags_t)(mDirectOutput ? AUDIO_OUTPUT_FLAG_DIRECT : 0); 711 outputDesc->mRefCount[stream] = 0; 712 mTestOutputs[mCurOutput] = mpClientInterface->openOutput(0, &outputDesc->mDevice, 713 &outputDesc->mSamplingRate, 714 &outputDesc->mFormat, 715 &outputDesc->mChannelMask, 716 &outputDesc->mLatency, 717 outputDesc->mFlags, 718 offloadInfo); 719 if (mTestOutputs[mCurOutput]) { 720 AudioParameter outputCmd = AudioParameter(); 721 outputCmd.addInt(String8("set_id"),mCurOutput); 722 mpClientInterface->setParameters(mTestOutputs[mCurOutput],outputCmd.toString()); 723 addOutput(mTestOutputs[mCurOutput], outputDesc); 724 } 725 } 726 return mTestOutputs[mCurOutput]; 727 } 728#endif //AUDIO_POLICY_TEST 729 730 // open a direct output if required by specified parameters 731 //force direct flag if offload flag is set: offloading implies a direct output stream 732 // and all common behaviors are driven by checking only the direct flag 733 // this should normally be set appropriately in the policy configuration file 734 if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) { 735 flags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_DIRECT); 736 } 737 738 // Do not allow offloading if one non offloadable effect is enabled. This prevents from 739 // creating an offloaded track and tearing it down immediately after start when audioflinger 740 // detects there is an active non offloadable effect. 741 // FIXME: We should check the audio session here but we do not have it in this context. 742 // This may prevent offloading in rare situations where effects are left active by apps 743 // in the background. 744 sp<IOProfile> profile; 745 if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) || 746 !isNonOffloadableEffectEnabled()) { 747 profile = getProfileForDirectOutput(device, 748 samplingRate, 749 format, 750 channelMask, 751 (audio_output_flags_t)flags); 752 } 753 754 if (profile != 0) { 755 sp<AudioOutputDescriptor> outputDesc = NULL; 756 757 for (size_t i = 0; i < mOutputs.size(); i++) { 758 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 759 if (!desc->isDuplicated() && (profile == desc->mProfile)) { 760 outputDesc = desc; 761 // reuse direct output if currently open and configured with same parameters 762 if ((samplingRate == outputDesc->mSamplingRate) && 763 (format == outputDesc->mFormat) && 764 (channelMask == outputDesc->mChannelMask)) { 765 outputDesc->mDirectOpenCount++; 766 ALOGV("getOutput() reusing direct output %d", mOutputs.keyAt(i)); 767 return mOutputs.keyAt(i); 768 } 769 } 770 } 771 // close direct output if currently open and configured with different parameters 772 if (outputDesc != NULL) { 773 closeOutput(outputDesc->mIoHandle); 774 } 775 outputDesc = new AudioOutputDescriptor(profile); 776 outputDesc->mDevice = device; 777 outputDesc->mSamplingRate = samplingRate; 778 outputDesc->mFormat = format; 779 outputDesc->mChannelMask = channelMask; 780 outputDesc->mLatency = 0; 781 outputDesc->mFlags =(audio_output_flags_t) (outputDesc->mFlags | flags); 782 outputDesc->mRefCount[stream] = 0; 783 outputDesc->mStopTime[stream] = 0; 784 outputDesc->mDirectOpenCount = 1; 785 output = mpClientInterface->openOutput(profile->mModule->mHandle, 786 &outputDesc->mDevice, 787 &outputDesc->mSamplingRate, 788 &outputDesc->mFormat, 789 &outputDesc->mChannelMask, 790 &outputDesc->mLatency, 791 outputDesc->mFlags, 792 offloadInfo); 793 794 // only accept an output with the requested parameters 795 if (output == 0 || 796 (samplingRate != 0 && samplingRate != outputDesc->mSamplingRate) || 797 (format != AUDIO_FORMAT_DEFAULT && format != outputDesc->mFormat) || 798 (channelMask != 0 && channelMask != outputDesc->mChannelMask)) { 799 ALOGV("getOutput() failed opening direct output: output %d samplingRate %d %d," 800 "format %d %d, channelMask %04x %04x", output, samplingRate, 801 outputDesc->mSamplingRate, format, outputDesc->mFormat, channelMask, 802 outputDesc->mChannelMask); 803 if (output != 0) { 804 mpClientInterface->closeOutput(output); 805 } 806 return 0; 807 } 808 audio_io_handle_t srcOutput = getOutputForEffect(); 809 addOutput(output, outputDesc); 810 audio_io_handle_t dstOutput = getOutputForEffect(); 811 if (dstOutput == output) { 812 mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, srcOutput, dstOutput); 813 } 814 mPreviousOutputs = mOutputs; 815 ALOGV("getOutput() returns new direct output %d", output); 816 mpClientInterface->onAudioPortListUpdate(); 817 return output; 818 } 819 820 // ignoring channel mask due to downmix capability in mixer 821 822 // open a non direct output 823 824 // for non direct outputs, only PCM is supported 825 if (audio_is_linear_pcm(format)) { 826 // get which output is suitable for the specified stream. The actual 827 // routing change will happen when startOutput() will be called 828 SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(device, mOutputs); 829 830 output = selectOutput(outputs, flags); 831 } 832 ALOGW_IF((output == 0), "getOutput() could not find output for stream %d, samplingRate %d," 833 "format %d, channels %x, flags %x", stream, samplingRate, format, channelMask, flags); 834 835 ALOGV("getOutput() returns output %d", output); 836 837 return output; 838} 839 840audio_io_handle_t AudioPolicyManager::selectOutput(const SortedVector<audio_io_handle_t>& outputs, 841 audio_output_flags_t flags) 842{ 843 // select one output among several that provide a path to a particular device or set of 844 // devices (the list was previously build by getOutputsForDevice()). 845 // The priority is as follows: 846 // 1: the output with the highest number of requested policy flags 847 // 2: the primary output 848 // 3: the first output in the list 849 850 if (outputs.size() == 0) { 851 return 0; 852 } 853 if (outputs.size() == 1) { 854 return outputs[0]; 855 } 856 857 int maxCommonFlags = 0; 858 audio_io_handle_t outputFlags = 0; 859 audio_io_handle_t outputPrimary = 0; 860 861 for (size_t i = 0; i < outputs.size(); i++) { 862 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(outputs[i]); 863 if (!outputDesc->isDuplicated()) { 864 int commonFlags = popcount(outputDesc->mProfile->mFlags & flags); 865 if (commonFlags > maxCommonFlags) { 866 outputFlags = outputs[i]; 867 maxCommonFlags = commonFlags; 868 ALOGV("selectOutput() commonFlags for output %d, %04x", outputs[i], commonFlags); 869 } 870 if (outputDesc->mProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) { 871 outputPrimary = outputs[i]; 872 } 873 } 874 } 875 876 if (outputFlags != 0) { 877 return outputFlags; 878 } 879 if (outputPrimary != 0) { 880 return outputPrimary; 881 } 882 883 return outputs[0]; 884} 885 886status_t AudioPolicyManager::startOutput(audio_io_handle_t output, 887 audio_stream_type_t stream, 888 int session) 889{ 890 ALOGV("startOutput() output %d, stream %d, session %d", output, stream, session); 891 ssize_t index = mOutputs.indexOfKey(output); 892 if (index < 0) { 893 ALOGW("startOutput() unknown output %d", output); 894 return BAD_VALUE; 895 } 896 897 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(index); 898 899 // increment usage count for this stream on the requested output: 900 // NOTE that the usage count is the same for duplicated output and hardware output which is 901 // necessary for a correct control of hardware output routing by startOutput() and stopOutput() 902 outputDesc->changeRefCount(stream, 1); 903 904 if (outputDesc->mRefCount[stream] == 1) { 905 audio_devices_t newDevice = getNewOutputDevice(output, false /*fromCache*/); 906 routing_strategy strategy = getStrategy(stream); 907 bool shouldWait = (strategy == STRATEGY_SONIFICATION) || 908 (strategy == STRATEGY_SONIFICATION_RESPECTFUL); 909 uint32_t waitMs = 0; 910 bool force = false; 911 for (size_t i = 0; i < mOutputs.size(); i++) { 912 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 913 if (desc != outputDesc) { 914 // force a device change if any other output is managed by the same hw 915 // module and has a current device selection that differs from selected device. 916 // In this case, the audio HAL must receive the new device selection so that it can 917 // change the device currently selected by the other active output. 918 if (outputDesc->sharesHwModuleWith(desc) && 919 desc->device() != newDevice) { 920 force = true; 921 } 922 // wait for audio on other active outputs to be presented when starting 923 // a notification so that audio focus effect can propagate. 924 uint32_t latency = desc->latency(); 925 if (shouldWait && desc->isActive(latency * 2) && (waitMs < latency)) { 926 waitMs = latency; 927 } 928 } 929 } 930 uint32_t muteWaitMs = setOutputDevice(output, newDevice, force); 931 932 // handle special case for sonification while in call 933 if (isInCall()) { 934 handleIncallSonification(stream, true, false); 935 } 936 937 // apply volume rules for current stream and device if necessary 938 checkAndSetVolume(stream, 939 mStreams[stream].getVolumeIndex(newDevice), 940 output, 941 newDevice); 942 943 // update the outputs if starting an output with a stream that can affect notification 944 // routing 945 handleNotificationRoutingForStream(stream); 946 if (waitMs > muteWaitMs) { 947 usleep((waitMs - muteWaitMs) * 2 * 1000); 948 } 949 } 950 return NO_ERROR; 951} 952 953 954status_t AudioPolicyManager::stopOutput(audio_io_handle_t output, 955 audio_stream_type_t stream, 956 int session) 957{ 958 ALOGV("stopOutput() output %d, stream %d, session %d", output, stream, session); 959 ssize_t index = mOutputs.indexOfKey(output); 960 if (index < 0) { 961 ALOGW("stopOutput() unknown output %d", output); 962 return BAD_VALUE; 963 } 964 965 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(index); 966 967 // handle special case for sonification while in call 968 if (isInCall()) { 969 handleIncallSonification(stream, false, false); 970 } 971 972 if (outputDesc->mRefCount[stream] > 0) { 973 // decrement usage count of this stream on the output 974 outputDesc->changeRefCount(stream, -1); 975 // store time at which the stream was stopped - see isStreamActive() 976 if (outputDesc->mRefCount[stream] == 0) { 977 outputDesc->mStopTime[stream] = systemTime(); 978 audio_devices_t newDevice = getNewOutputDevice(output, false /*fromCache*/); 979 // delay the device switch by twice the latency because stopOutput() is executed when 980 // the track stop() command is received and at that time the audio track buffer can 981 // still contain data that needs to be drained. The latency only covers the audio HAL 982 // and kernel buffers. Also the latency does not always include additional delay in the 983 // audio path (audio DSP, CODEC ...) 984 setOutputDevice(output, newDevice, false, outputDesc->mLatency*2); 985 986 // force restoring the device selection on other active outputs if it differs from the 987 // one being selected for this output 988 for (size_t i = 0; i < mOutputs.size(); i++) { 989 audio_io_handle_t curOutput = mOutputs.keyAt(i); 990 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 991 if (curOutput != output && 992 desc->isActive() && 993 outputDesc->sharesHwModuleWith(desc) && 994 (newDevice != desc->device())) { 995 setOutputDevice(curOutput, 996 getNewOutputDevice(curOutput, false /*fromCache*/), 997 true, 998 outputDesc->mLatency*2); 999 } 1000 } 1001 // update the outputs if stopping one with a stream that can affect notification routing 1002 handleNotificationRoutingForStream(stream); 1003 } 1004 return NO_ERROR; 1005 } else { 1006 ALOGW("stopOutput() refcount is already 0 for output %d", output); 1007 return INVALID_OPERATION; 1008 } 1009} 1010 1011void AudioPolicyManager::releaseOutput(audio_io_handle_t output) 1012{ 1013 ALOGV("releaseOutput() %d", output); 1014 ssize_t index = mOutputs.indexOfKey(output); 1015 if (index < 0) { 1016 ALOGW("releaseOutput() releasing unknown output %d", output); 1017 return; 1018 } 1019 1020#ifdef AUDIO_POLICY_TEST 1021 int testIndex = testOutputIndex(output); 1022 if (testIndex != 0) { 1023 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(index); 1024 if (outputDesc->isActive()) { 1025 mpClientInterface->closeOutput(output); 1026 mOutputs.removeItem(output); 1027 mTestOutputs[testIndex] = 0; 1028 } 1029 return; 1030 } 1031#endif //AUDIO_POLICY_TEST 1032 1033 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(index); 1034 if (desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) { 1035 if (desc->mDirectOpenCount <= 0) { 1036 ALOGW("releaseOutput() invalid open count %d for output %d", 1037 desc->mDirectOpenCount, output); 1038 return; 1039 } 1040 if (--desc->mDirectOpenCount == 0) { 1041 closeOutput(output); 1042 // If effects where present on the output, audioflinger moved them to the primary 1043 // output by default: move them back to the appropriate output. 1044 audio_io_handle_t dstOutput = getOutputForEffect(); 1045 if (dstOutput != mPrimaryOutput) { 1046 mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, mPrimaryOutput, dstOutput); 1047 } 1048 mpClientInterface->onAudioPortListUpdate(); 1049 } 1050 } 1051} 1052 1053 1054audio_io_handle_t AudioPolicyManager::getInput(audio_source_t inputSource, 1055 uint32_t samplingRate, 1056 audio_format_t format, 1057 audio_channel_mask_t channelMask, 1058 audio_in_acoustics_t acoustics) 1059{ 1060 audio_io_handle_t input = 0; 1061 audio_devices_t device = getDeviceForInputSource(inputSource); 1062 1063 ALOGV("getInput() inputSource %d, samplingRate %d, format %d, channelMask %x, acoustics %x", 1064 inputSource, samplingRate, format, channelMask, acoustics); 1065 1066 if (device == AUDIO_DEVICE_NONE) { 1067 ALOGW("getInput() could not find device for inputSource %d", inputSource); 1068 return 0; 1069 } 1070 1071 // adapt channel selection to input source 1072 switch(inputSource) { 1073 case AUDIO_SOURCE_VOICE_UPLINK: 1074 channelMask = AUDIO_CHANNEL_IN_VOICE_UPLINK; 1075 break; 1076 case AUDIO_SOURCE_VOICE_DOWNLINK: 1077 channelMask = AUDIO_CHANNEL_IN_VOICE_DNLINK; 1078 break; 1079 case AUDIO_SOURCE_VOICE_CALL: 1080 channelMask = AUDIO_CHANNEL_IN_VOICE_UPLINK | AUDIO_CHANNEL_IN_VOICE_DNLINK; 1081 break; 1082 default: 1083 break; 1084 } 1085 1086 sp<IOProfile> profile = getInputProfile(device, 1087 samplingRate, 1088 format, 1089 channelMask); 1090 if (profile == 0) { 1091 ALOGW("getInput() could not find profile for device %04x, samplingRate %d, format %d, " 1092 "channelMask %04x", 1093 device, samplingRate, format, channelMask); 1094 return 0; 1095 } 1096 1097 if (profile->mModule->mHandle == 0) { 1098 ALOGE("getInput(): HW module %s not opened", profile->mModule->mName); 1099 return 0; 1100 } 1101 1102 sp<AudioInputDescriptor> inputDesc = new AudioInputDescriptor(profile); 1103 1104 inputDesc->mInputSource = inputSource; 1105 inputDesc->mDevice = device; 1106 inputDesc->mSamplingRate = samplingRate; 1107 inputDesc->mFormat = format; 1108 inputDesc->mChannelMask = channelMask; 1109 inputDesc->mRefCount = 0; 1110 input = mpClientInterface->openInput(profile->mModule->mHandle, 1111 &inputDesc->mDevice, 1112 &inputDesc->mSamplingRate, 1113 &inputDesc->mFormat, 1114 &inputDesc->mChannelMask, 1115 AUDIO_INPUT_FLAG_FAST /*FIXME*/); 1116 1117 // only accept input with the exact requested set of parameters 1118 if (input == 0 || 1119 (samplingRate != inputDesc->mSamplingRate) || 1120 (format != inputDesc->mFormat) || 1121 (channelMask != inputDesc->mChannelMask)) { 1122 ALOGI("getInput() failed opening input: samplingRate %d, format %d, channelMask %x", 1123 samplingRate, format, channelMask); 1124 if (input != 0) { 1125 mpClientInterface->closeInput(input); 1126 } 1127 return 0; 1128 } 1129 addInput(input, inputDesc); 1130 mpClientInterface->onAudioPortListUpdate(); 1131 return input; 1132} 1133 1134status_t AudioPolicyManager::startInput(audio_io_handle_t input) 1135{ 1136 ALOGV("startInput() input %d", input); 1137 ssize_t index = mInputs.indexOfKey(input); 1138 if (index < 0) { 1139 ALOGW("startInput() unknown input %d", input); 1140 return BAD_VALUE; 1141 } 1142 sp<AudioInputDescriptor> inputDesc = mInputs.valueAt(index); 1143 1144#ifdef AUDIO_POLICY_TEST 1145 if (mTestInput == 0) 1146#endif //AUDIO_POLICY_TEST 1147 { 1148 // refuse 2 active AudioRecord clients at the same time except if the active input 1149 // uses AUDIO_SOURCE_HOTWORD in which case it is closed. 1150 audio_io_handle_t activeInput = getActiveInput(); 1151 if (!isVirtualInputDevice(inputDesc->mDevice) && activeInput != 0) { 1152 sp<AudioInputDescriptor> activeDesc = mInputs.valueFor(activeInput); 1153 if (activeDesc->mInputSource == AUDIO_SOURCE_HOTWORD) { 1154 ALOGW("startInput() preempting already started low-priority input %d", activeInput); 1155 stopInput(activeInput); 1156 releaseInput(activeInput); 1157 } else { 1158 ALOGW("startInput() input %d failed: other input already started", input); 1159 return INVALID_OPERATION; 1160 } 1161 } 1162 } 1163 1164 setInputDevice(input, getNewInputDevice(input), true /* force */); 1165 1166 // automatically enable the remote submix output when input is started 1167 if (audio_is_remote_submix_device(inputDesc->mDevice)) { 1168 setDeviceConnectionState(AUDIO_DEVICE_OUT_REMOTE_SUBMIX, 1169 AUDIO_POLICY_DEVICE_STATE_AVAILABLE, AUDIO_REMOTE_SUBMIX_DEVICE_ADDRESS); 1170 } 1171 1172 ALOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource); 1173 1174 inputDesc->mRefCount = 1; 1175 return NO_ERROR; 1176} 1177 1178status_t AudioPolicyManager::stopInput(audio_io_handle_t input) 1179{ 1180 ALOGV("stopInput() input %d", input); 1181 ssize_t index = mInputs.indexOfKey(input); 1182 if (index < 0) { 1183 ALOGW("stopInput() unknown input %d", input); 1184 return BAD_VALUE; 1185 } 1186 sp<AudioInputDescriptor> inputDesc = mInputs.valueAt(index); 1187 1188 if (inputDesc->mRefCount == 0) { 1189 ALOGW("stopInput() input %d already stopped", input); 1190 return INVALID_OPERATION; 1191 } else { 1192 // automatically disable the remote submix output when input is stopped 1193 if (audio_is_remote_submix_device(inputDesc->mDevice)) { 1194 setDeviceConnectionState(AUDIO_DEVICE_OUT_REMOTE_SUBMIX, 1195 AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE, AUDIO_REMOTE_SUBMIX_DEVICE_ADDRESS); 1196 } 1197 1198 resetInputDevice(input); 1199 inputDesc->mRefCount = 0; 1200 return NO_ERROR; 1201 } 1202} 1203 1204void AudioPolicyManager::releaseInput(audio_io_handle_t input) 1205{ 1206 ALOGV("releaseInput() %d", input); 1207 ssize_t index = mInputs.indexOfKey(input); 1208 if (index < 0) { 1209 ALOGW("releaseInput() releasing unknown input %d", input); 1210 return; 1211 } 1212 mpClientInterface->closeInput(input); 1213 mInputs.removeItem(input); 1214 nextAudioPortGeneration(); 1215 mpClientInterface->onAudioPortListUpdate(); 1216 ALOGV("releaseInput() exit"); 1217} 1218 1219void AudioPolicyManager::closeAllInputs() { 1220 for(size_t input_index = 0; input_index < mInputs.size(); input_index++) { 1221 mpClientInterface->closeInput(mInputs.keyAt(input_index)); 1222 } 1223 mInputs.clear(); 1224 nextAudioPortGeneration(); 1225} 1226 1227void AudioPolicyManager::initStreamVolume(audio_stream_type_t stream, 1228 int indexMin, 1229 int indexMax) 1230{ 1231 ALOGV("initStreamVolume() stream %d, min %d, max %d", stream , indexMin, indexMax); 1232 if (indexMin < 0 || indexMin >= indexMax) { 1233 ALOGW("initStreamVolume() invalid index limits for stream %d, min %d, max %d", stream , indexMin, indexMax); 1234 return; 1235 } 1236 mStreams[stream].mIndexMin = indexMin; 1237 mStreams[stream].mIndexMax = indexMax; 1238} 1239 1240status_t AudioPolicyManager::setStreamVolumeIndex(audio_stream_type_t stream, 1241 int index, 1242 audio_devices_t device) 1243{ 1244 1245 if ((index < mStreams[stream].mIndexMin) || (index > mStreams[stream].mIndexMax)) { 1246 return BAD_VALUE; 1247 } 1248 if (!audio_is_output_device(device)) { 1249 return BAD_VALUE; 1250 } 1251 1252 // Force max volume if stream cannot be muted 1253 if (!mStreams[stream].mCanBeMuted) index = mStreams[stream].mIndexMax; 1254 1255 ALOGV("setStreamVolumeIndex() stream %d, device %04x, index %d", 1256 stream, device, index); 1257 1258 // if device is AUDIO_DEVICE_OUT_DEFAULT set default value and 1259 // clear all device specific values 1260 if (device == AUDIO_DEVICE_OUT_DEFAULT) { 1261 mStreams[stream].mIndexCur.clear(); 1262 } 1263 mStreams[stream].mIndexCur.add(device, index); 1264 1265 // compute and apply stream volume on all outputs according to connected device 1266 status_t status = NO_ERROR; 1267 for (size_t i = 0; i < mOutputs.size(); i++) { 1268 audio_devices_t curDevice = 1269 getDeviceForVolume(mOutputs.valueAt(i)->device()); 1270 if ((device == AUDIO_DEVICE_OUT_DEFAULT) || (device == curDevice)) { 1271 status_t volStatus = checkAndSetVolume(stream, index, mOutputs.keyAt(i), curDevice); 1272 if (volStatus != NO_ERROR) { 1273 status = volStatus; 1274 } 1275 } 1276 } 1277 return status; 1278} 1279 1280status_t AudioPolicyManager::getStreamVolumeIndex(audio_stream_type_t stream, 1281 int *index, 1282 audio_devices_t device) 1283{ 1284 if (index == NULL) { 1285 return BAD_VALUE; 1286 } 1287 if (!audio_is_output_device(device)) { 1288 return BAD_VALUE; 1289 } 1290 // if device is AUDIO_DEVICE_OUT_DEFAULT, return volume for device corresponding to 1291 // the strategy the stream belongs to. 1292 if (device == AUDIO_DEVICE_OUT_DEFAULT) { 1293 device = getDeviceForStrategy(getStrategy(stream), true /*fromCache*/); 1294 } 1295 device = getDeviceForVolume(device); 1296 1297 *index = mStreams[stream].getVolumeIndex(device); 1298 ALOGV("getStreamVolumeIndex() stream %d device %08x index %d", stream, device, *index); 1299 return NO_ERROR; 1300} 1301 1302audio_io_handle_t AudioPolicyManager::selectOutputForEffects( 1303 const SortedVector<audio_io_handle_t>& outputs) 1304{ 1305 // select one output among several suitable for global effects. 1306 // The priority is as follows: 1307 // 1: An offloaded output. If the effect ends up not being offloadable, 1308 // AudioFlinger will invalidate the track and the offloaded output 1309 // will be closed causing the effect to be moved to a PCM output. 1310 // 2: A deep buffer output 1311 // 3: the first output in the list 1312 1313 if (outputs.size() == 0) { 1314 return 0; 1315 } 1316 1317 audio_io_handle_t outputOffloaded = 0; 1318 audio_io_handle_t outputDeepBuffer = 0; 1319 1320 for (size_t i = 0; i < outputs.size(); i++) { 1321 sp<AudioOutputDescriptor> desc = mOutputs.valueFor(outputs[i]); 1322 ALOGV("selectOutputForEffects outputs[%zu] flags %x", i, desc->mFlags); 1323 if ((desc->mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) { 1324 outputOffloaded = outputs[i]; 1325 } 1326 if ((desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) != 0) { 1327 outputDeepBuffer = outputs[i]; 1328 } 1329 } 1330 1331 ALOGV("selectOutputForEffects outputOffloaded %d outputDeepBuffer %d", 1332 outputOffloaded, outputDeepBuffer); 1333 if (outputOffloaded != 0) { 1334 return outputOffloaded; 1335 } 1336 if (outputDeepBuffer != 0) { 1337 return outputDeepBuffer; 1338 } 1339 1340 return outputs[0]; 1341} 1342 1343audio_io_handle_t AudioPolicyManager::getOutputForEffect(const effect_descriptor_t *desc) 1344{ 1345 // apply simple rule where global effects are attached to the same output as MUSIC streams 1346 1347 routing_strategy strategy = getStrategy(AUDIO_STREAM_MUSIC); 1348 audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/); 1349 SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(device, mOutputs); 1350 1351 audio_io_handle_t output = selectOutputForEffects(dstOutputs); 1352 ALOGV("getOutputForEffect() got output %d for fx %s flags %x", 1353 output, (desc == NULL) ? "unspecified" : desc->name, (desc == NULL) ? 0 : desc->flags); 1354 1355 return output; 1356} 1357 1358status_t AudioPolicyManager::registerEffect(const effect_descriptor_t *desc, 1359 audio_io_handle_t io, 1360 uint32_t strategy, 1361 int session, 1362 int id) 1363{ 1364 ssize_t index = mOutputs.indexOfKey(io); 1365 if (index < 0) { 1366 index = mInputs.indexOfKey(io); 1367 if (index < 0) { 1368 ALOGW("registerEffect() unknown io %d", io); 1369 return INVALID_OPERATION; 1370 } 1371 } 1372 1373 if (mTotalEffectsMemory + desc->memoryUsage > getMaxEffectsMemory()) { 1374 ALOGW("registerEffect() memory limit exceeded for Fx %s, Memory %d KB", 1375 desc->name, desc->memoryUsage); 1376 return INVALID_OPERATION; 1377 } 1378 mTotalEffectsMemory += desc->memoryUsage; 1379 ALOGV("registerEffect() effect %s, io %d, strategy %d session %d id %d", 1380 desc->name, io, strategy, session, id); 1381 ALOGV("registerEffect() memory %d, total memory %d", desc->memoryUsage, mTotalEffectsMemory); 1382 1383 sp<EffectDescriptor> effectDesc = new EffectDescriptor(); 1384 memcpy (&effectDesc->mDesc, desc, sizeof(effect_descriptor_t)); 1385 effectDesc->mIo = io; 1386 effectDesc->mStrategy = (routing_strategy)strategy; 1387 effectDesc->mSession = session; 1388 effectDesc->mEnabled = false; 1389 1390 mEffects.add(id, effectDesc); 1391 1392 return NO_ERROR; 1393} 1394 1395status_t AudioPolicyManager::unregisterEffect(int id) 1396{ 1397 ssize_t index = mEffects.indexOfKey(id); 1398 if (index < 0) { 1399 ALOGW("unregisterEffect() unknown effect ID %d", id); 1400 return INVALID_OPERATION; 1401 } 1402 1403 sp<EffectDescriptor> effectDesc = mEffects.valueAt(index); 1404 1405 setEffectEnabled(effectDesc, false); 1406 1407 if (mTotalEffectsMemory < effectDesc->mDesc.memoryUsage) { 1408 ALOGW("unregisterEffect() memory %d too big for total %d", 1409 effectDesc->mDesc.memoryUsage, mTotalEffectsMemory); 1410 effectDesc->mDesc.memoryUsage = mTotalEffectsMemory; 1411 } 1412 mTotalEffectsMemory -= effectDesc->mDesc.memoryUsage; 1413 ALOGV("unregisterEffect() effect %s, ID %d, memory %d total memory %d", 1414 effectDesc->mDesc.name, id, effectDesc->mDesc.memoryUsage, mTotalEffectsMemory); 1415 1416 mEffects.removeItem(id); 1417 1418 return NO_ERROR; 1419} 1420 1421status_t AudioPolicyManager::setEffectEnabled(int id, bool enabled) 1422{ 1423 ssize_t index = mEffects.indexOfKey(id); 1424 if (index < 0) { 1425 ALOGW("unregisterEffect() unknown effect ID %d", id); 1426 return INVALID_OPERATION; 1427 } 1428 1429 return setEffectEnabled(mEffects.valueAt(index), enabled); 1430} 1431 1432status_t AudioPolicyManager::setEffectEnabled(const sp<EffectDescriptor>& effectDesc, bool enabled) 1433{ 1434 if (enabled == effectDesc->mEnabled) { 1435 ALOGV("setEffectEnabled(%s) effect already %s", 1436 enabled?"true":"false", enabled?"enabled":"disabled"); 1437 return INVALID_OPERATION; 1438 } 1439 1440 if (enabled) { 1441 if (mTotalEffectsCpuLoad + effectDesc->mDesc.cpuLoad > getMaxEffectsCpuLoad()) { 1442 ALOGW("setEffectEnabled(true) CPU Load limit exceeded for Fx %s, CPU %f MIPS", 1443 effectDesc->mDesc.name, (float)effectDesc->mDesc.cpuLoad/10); 1444 return INVALID_OPERATION; 1445 } 1446 mTotalEffectsCpuLoad += effectDesc->mDesc.cpuLoad; 1447 ALOGV("setEffectEnabled(true) total CPU %d", mTotalEffectsCpuLoad); 1448 } else { 1449 if (mTotalEffectsCpuLoad < effectDesc->mDesc.cpuLoad) { 1450 ALOGW("setEffectEnabled(false) CPU load %d too high for total %d", 1451 effectDesc->mDesc.cpuLoad, mTotalEffectsCpuLoad); 1452 effectDesc->mDesc.cpuLoad = mTotalEffectsCpuLoad; 1453 } 1454 mTotalEffectsCpuLoad -= effectDesc->mDesc.cpuLoad; 1455 ALOGV("setEffectEnabled(false) total CPU %d", mTotalEffectsCpuLoad); 1456 } 1457 effectDesc->mEnabled = enabled; 1458 return NO_ERROR; 1459} 1460 1461bool AudioPolicyManager::isNonOffloadableEffectEnabled() 1462{ 1463 for (size_t i = 0; i < mEffects.size(); i++) { 1464 sp<EffectDescriptor> effectDesc = mEffects.valueAt(i); 1465 if (effectDesc->mEnabled && (effectDesc->mStrategy == STRATEGY_MEDIA) && 1466 ((effectDesc->mDesc.flags & EFFECT_FLAG_OFFLOAD_SUPPORTED) == 0)) { 1467 ALOGV("isNonOffloadableEffectEnabled() non offloadable effect %s enabled on session %d", 1468 effectDesc->mDesc.name, effectDesc->mSession); 1469 return true; 1470 } 1471 } 1472 return false; 1473} 1474 1475bool AudioPolicyManager::isStreamActive(audio_stream_type_t stream, uint32_t inPastMs) const 1476{ 1477 nsecs_t sysTime = systemTime(); 1478 for (size_t i = 0; i < mOutputs.size(); i++) { 1479 const sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(i); 1480 if (outputDesc->isStreamActive(stream, inPastMs, sysTime)) { 1481 return true; 1482 } 1483 } 1484 return false; 1485} 1486 1487bool AudioPolicyManager::isStreamActiveRemotely(audio_stream_type_t stream, 1488 uint32_t inPastMs) const 1489{ 1490 nsecs_t sysTime = systemTime(); 1491 for (size_t i = 0; i < mOutputs.size(); i++) { 1492 const sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(i); 1493 if (((outputDesc->device() & APM_AUDIO_OUT_DEVICE_REMOTE_ALL) != 0) && 1494 outputDesc->isStreamActive(stream, inPastMs, sysTime)) { 1495 return true; 1496 } 1497 } 1498 return false; 1499} 1500 1501bool AudioPolicyManager::isSourceActive(audio_source_t source) const 1502{ 1503 for (size_t i = 0; i < mInputs.size(); i++) { 1504 const sp<AudioInputDescriptor> inputDescriptor = mInputs.valueAt(i); 1505 if ((inputDescriptor->mInputSource == (int)source || 1506 (source == AUDIO_SOURCE_VOICE_RECOGNITION && 1507 inputDescriptor->mInputSource == AUDIO_SOURCE_HOTWORD)) 1508 && (inputDescriptor->mRefCount > 0)) { 1509 return true; 1510 } 1511 } 1512 return false; 1513} 1514 1515 1516status_t AudioPolicyManager::dump(int fd) 1517{ 1518 const size_t SIZE = 256; 1519 char buffer[SIZE]; 1520 String8 result; 1521 1522 snprintf(buffer, SIZE, "\nAudioPolicyManager Dump: %p\n", this); 1523 result.append(buffer); 1524 1525 snprintf(buffer, SIZE, " Primary Output: %d\n", mPrimaryOutput); 1526 result.append(buffer); 1527 snprintf(buffer, SIZE, " Phone state: %d\n", mPhoneState); 1528 result.append(buffer); 1529 snprintf(buffer, SIZE, " Force use for communications %d\n", 1530 mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]); 1531 result.append(buffer); 1532 snprintf(buffer, SIZE, " Force use for media %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA]); 1533 result.append(buffer); 1534 snprintf(buffer, SIZE, " Force use for record %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD]); 1535 result.append(buffer); 1536 snprintf(buffer, SIZE, " Force use for dock %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_DOCK]); 1537 result.append(buffer); 1538 snprintf(buffer, SIZE, " Force use for system %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM]); 1539 result.append(buffer); 1540 snprintf(buffer, SIZE, " Force use for hdmi system audio %d\n", 1541 mForceUse[AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO]); 1542 result.append(buffer); 1543 1544 snprintf(buffer, SIZE, " Available output devices:\n"); 1545 result.append(buffer); 1546 write(fd, result.string(), result.size()); 1547 for (size_t i = 0; i < mAvailableOutputDevices.size(); i++) { 1548 mAvailableOutputDevices[i]->dump(fd, 2, i); 1549 } 1550 snprintf(buffer, SIZE, "\n Available input devices:\n"); 1551 write(fd, buffer, strlen(buffer)); 1552 for (size_t i = 0; i < mAvailableInputDevices.size(); i++) { 1553 mAvailableInputDevices[i]->dump(fd, 2, i); 1554 } 1555 1556 snprintf(buffer, SIZE, "\nHW Modules dump:\n"); 1557 write(fd, buffer, strlen(buffer)); 1558 for (size_t i = 0; i < mHwModules.size(); i++) { 1559 snprintf(buffer, SIZE, "- HW Module %zu:\n", i + 1); 1560 write(fd, buffer, strlen(buffer)); 1561 mHwModules[i]->dump(fd); 1562 } 1563 1564 snprintf(buffer, SIZE, "\nOutputs dump:\n"); 1565 write(fd, buffer, strlen(buffer)); 1566 for (size_t i = 0; i < mOutputs.size(); i++) { 1567 snprintf(buffer, SIZE, "- Output %d dump:\n", mOutputs.keyAt(i)); 1568 write(fd, buffer, strlen(buffer)); 1569 mOutputs.valueAt(i)->dump(fd); 1570 } 1571 1572 snprintf(buffer, SIZE, "\nInputs dump:\n"); 1573 write(fd, buffer, strlen(buffer)); 1574 for (size_t i = 0; i < mInputs.size(); i++) { 1575 snprintf(buffer, SIZE, "- Input %d dump:\n", mInputs.keyAt(i)); 1576 write(fd, buffer, strlen(buffer)); 1577 mInputs.valueAt(i)->dump(fd); 1578 } 1579 1580 snprintf(buffer, SIZE, "\nStreams dump:\n"); 1581 write(fd, buffer, strlen(buffer)); 1582 snprintf(buffer, SIZE, 1583 " Stream Can be muted Index Min Index Max Index Cur [device : index]...\n"); 1584 write(fd, buffer, strlen(buffer)); 1585 for (size_t i = 0; i < AUDIO_STREAM_CNT; i++) { 1586 snprintf(buffer, SIZE, " %02zu ", i); 1587 write(fd, buffer, strlen(buffer)); 1588 mStreams[i].dump(fd); 1589 } 1590 1591 snprintf(buffer, SIZE, "\nTotal Effects CPU: %f MIPS, Total Effects memory: %d KB\n", 1592 (float)mTotalEffectsCpuLoad/10, mTotalEffectsMemory); 1593 write(fd, buffer, strlen(buffer)); 1594 1595 snprintf(buffer, SIZE, "Registered effects:\n"); 1596 write(fd, buffer, strlen(buffer)); 1597 for (size_t i = 0; i < mEffects.size(); i++) { 1598 snprintf(buffer, SIZE, "- Effect %d dump:\n", mEffects.keyAt(i)); 1599 write(fd, buffer, strlen(buffer)); 1600 mEffects.valueAt(i)->dump(fd); 1601 } 1602 1603 1604 return NO_ERROR; 1605} 1606 1607// This function checks for the parameters which can be offloaded. 1608// This can be enhanced depending on the capability of the DSP and policy 1609// of the system. 1610bool AudioPolicyManager::isOffloadSupported(const audio_offload_info_t& offloadInfo) 1611{ 1612 ALOGV("isOffloadSupported: SR=%u, CM=0x%x, Format=0x%x, StreamType=%d," 1613 " BitRate=%u, duration=%" PRId64 " us, has_video=%d", 1614 offloadInfo.sample_rate, offloadInfo.channel_mask, 1615 offloadInfo.format, 1616 offloadInfo.stream_type, offloadInfo.bit_rate, offloadInfo.duration_us, 1617 offloadInfo.has_video); 1618 1619 // Check if offload has been disabled 1620 char propValue[PROPERTY_VALUE_MAX]; 1621 if (property_get("audio.offload.disable", propValue, "0")) { 1622 if (atoi(propValue) != 0) { 1623 ALOGV("offload disabled by audio.offload.disable=%s", propValue ); 1624 return false; 1625 } 1626 } 1627 1628 // Check if stream type is music, then only allow offload as of now. 1629 if (offloadInfo.stream_type != AUDIO_STREAM_MUSIC) 1630 { 1631 ALOGV("isOffloadSupported: stream_type != MUSIC, returning false"); 1632 return false; 1633 } 1634 1635 //TODO: enable audio offloading with video when ready 1636 if (offloadInfo.has_video) 1637 { 1638 ALOGV("isOffloadSupported: has_video == true, returning false"); 1639 return false; 1640 } 1641 1642 //If duration is less than minimum value defined in property, return false 1643 if (property_get("audio.offload.min.duration.secs", propValue, NULL)) { 1644 if (offloadInfo.duration_us < (atoi(propValue) * 1000000 )) { 1645 ALOGV("Offload denied by duration < audio.offload.min.duration.secs(=%s)", propValue); 1646 return false; 1647 } 1648 } else if (offloadInfo.duration_us < OFFLOAD_DEFAULT_MIN_DURATION_SECS * 1000000) { 1649 ALOGV("Offload denied by duration < default min(=%u)", OFFLOAD_DEFAULT_MIN_DURATION_SECS); 1650 return false; 1651 } 1652 1653 // Do not allow offloading if one non offloadable effect is enabled. This prevents from 1654 // creating an offloaded track and tearing it down immediately after start when audioflinger 1655 // detects there is an active non offloadable effect. 1656 // FIXME: We should check the audio session here but we do not have it in this context. 1657 // This may prevent offloading in rare situations where effects are left active by apps 1658 // in the background. 1659 if (isNonOffloadableEffectEnabled()) { 1660 return false; 1661 } 1662 1663 // See if there is a profile to support this. 1664 // AUDIO_DEVICE_NONE 1665 sp<IOProfile> profile = getProfileForDirectOutput(AUDIO_DEVICE_NONE /*ignore device */, 1666 offloadInfo.sample_rate, 1667 offloadInfo.format, 1668 offloadInfo.channel_mask, 1669 AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD); 1670 ALOGV("isOffloadSupported() profile %sfound", profile != 0 ? "" : "NOT "); 1671 return (profile != 0); 1672} 1673 1674status_t AudioPolicyManager::listAudioPorts(audio_port_role_t role, 1675 audio_port_type_t type, 1676 unsigned int *num_ports, 1677 struct audio_port *ports, 1678 unsigned int *generation) 1679{ 1680 if (num_ports == NULL || (*num_ports != 0 && ports == NULL) || 1681 generation == NULL) { 1682 return BAD_VALUE; 1683 } 1684 ALOGV("listAudioPorts() role %d type %d num_ports %d ports %p", role, type, *num_ports, ports); 1685 if (ports == NULL) { 1686 *num_ports = 0; 1687 } 1688 1689 size_t portsWritten = 0; 1690 size_t portsMax = *num_ports; 1691 *num_ports = 0; 1692 if (type == AUDIO_PORT_TYPE_NONE || type == AUDIO_PORT_TYPE_DEVICE) { 1693 if (role == AUDIO_PORT_ROLE_SINK || role == AUDIO_PORT_ROLE_NONE) { 1694 for (size_t i = 0; 1695 i < mAvailableOutputDevices.size() && portsWritten < portsMax; i++) { 1696 mAvailableOutputDevices[i]->toAudioPort(&ports[portsWritten++]); 1697 } 1698 *num_ports += mAvailableOutputDevices.size(); 1699 } 1700 if (role == AUDIO_PORT_ROLE_SOURCE || role == AUDIO_PORT_ROLE_NONE) { 1701 for (size_t i = 0; 1702 i < mAvailableInputDevices.size() && portsWritten < portsMax; i++) { 1703 mAvailableInputDevices[i]->toAudioPort(&ports[portsWritten++]); 1704 } 1705 *num_ports += mAvailableInputDevices.size(); 1706 } 1707 } 1708 if (type == AUDIO_PORT_TYPE_NONE || type == AUDIO_PORT_TYPE_MIX) { 1709 if (role == AUDIO_PORT_ROLE_SINK || role == AUDIO_PORT_ROLE_NONE) { 1710 for (size_t i = 0; i < mInputs.size() && portsWritten < portsMax; i++) { 1711 mInputs[i]->toAudioPort(&ports[portsWritten++]); 1712 } 1713 *num_ports += mInputs.size(); 1714 } 1715 if (role == AUDIO_PORT_ROLE_SOURCE || role == AUDIO_PORT_ROLE_NONE) { 1716 size_t numOutputs = 0; 1717 for (size_t i = 0; i < mOutputs.size(); i++) { 1718 if (!mOutputs[i]->isDuplicated()) { 1719 numOutputs++; 1720 if (portsWritten < portsMax) { 1721 mOutputs[i]->toAudioPort(&ports[portsWritten++]); 1722 } 1723 } 1724 } 1725 *num_ports += numOutputs; 1726 } 1727 } 1728 *generation = curAudioPortGeneration(); 1729 ALOGV("listAudioPorts() got %zu ports needed %d", portsWritten, *num_ports); 1730 return NO_ERROR; 1731} 1732 1733status_t AudioPolicyManager::getAudioPort(struct audio_port *port __unused) 1734{ 1735 return NO_ERROR; 1736} 1737 1738sp<AudioPolicyManager::AudioOutputDescriptor> AudioPolicyManager::getOutputFromId( 1739 audio_port_handle_t id) const 1740{ 1741 sp<AudioOutputDescriptor> outputDesc = NULL; 1742 for (size_t i = 0; i < mOutputs.size(); i++) { 1743 outputDesc = mOutputs.valueAt(i); 1744 if (outputDesc->mId == id) { 1745 break; 1746 } 1747 } 1748 return outputDesc; 1749} 1750 1751sp<AudioPolicyManager::AudioInputDescriptor> AudioPolicyManager::getInputFromId( 1752 audio_port_handle_t id) const 1753{ 1754 sp<AudioInputDescriptor> inputDesc = NULL; 1755 for (size_t i = 0; i < mInputs.size(); i++) { 1756 inputDesc = mInputs.valueAt(i); 1757 if (inputDesc->mId == id) { 1758 break; 1759 } 1760 } 1761 return inputDesc; 1762} 1763 1764sp <AudioPolicyManager::HwModule> AudioPolicyManager::getModuleForDevice( 1765 audio_devices_t device) const 1766{ 1767 sp <HwModule> module; 1768 1769 for (size_t i = 0; i < mHwModules.size(); i++) { 1770 if (mHwModules[i]->mHandle == 0) { 1771 continue; 1772 } 1773 if (audio_is_output_device(device)) { 1774 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 1775 { 1776 if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices.types() & device) { 1777 return mHwModules[i]; 1778 } 1779 } 1780 } else { 1781 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) { 1782 if (mHwModules[i]->mInputProfiles[j]->mSupportedDevices.types() & 1783 device & ~AUDIO_DEVICE_BIT_IN) { 1784 return mHwModules[i]; 1785 } 1786 } 1787 } 1788 } 1789 return module; 1790} 1791 1792sp <AudioPolicyManager::HwModule> AudioPolicyManager::getModuleFromName(const char *name) const 1793{ 1794 sp <HwModule> module; 1795 1796 for (size_t i = 0; i < mHwModules.size(); i++) 1797 { 1798 if (strcmp(mHwModules[i]->mName, name) == 0) { 1799 return mHwModules[i]; 1800 } 1801 } 1802 return module; 1803} 1804 1805 1806status_t AudioPolicyManager::createAudioPatch(const struct audio_patch *patch, 1807 audio_patch_handle_t *handle, 1808 uid_t uid) 1809{ 1810 ALOGV("createAudioPatch()"); 1811 1812 if (handle == NULL || patch == NULL) { 1813 return BAD_VALUE; 1814 } 1815 ALOGV("createAudioPatch() num sources %d num sinks %d", patch->num_sources, patch->num_sinks); 1816 1817 if (patch->num_sources > 1 || patch->num_sinks > 1) { 1818 return INVALID_OPERATION; 1819 } 1820 if (patch->sources[0].role != AUDIO_PORT_ROLE_SOURCE || 1821 patch->sinks[0].role != AUDIO_PORT_ROLE_SINK) { 1822 return INVALID_OPERATION; 1823 } 1824 1825 sp<AudioPatch> patchDesc; 1826 ssize_t index = mAudioPatches.indexOfKey(*handle); 1827 1828 ALOGV("createAudioPatch sink id %d role %d type %d", patch->sinks[0].id, patch->sinks[0].role, 1829 patch->sinks[0].type); 1830 ALOGV("createAudioPatch source id %d role %d type %d", patch->sources[0].id, 1831 patch->sources[0].role, 1832 patch->sources[0].type); 1833 1834 if (index >= 0) { 1835 patchDesc = mAudioPatches.valueAt(index); 1836 ALOGV("createAudioPatch() mUidCached %d patchDesc->mUid %d uid %d", 1837 mUidCached, patchDesc->mUid, uid); 1838 if (patchDesc->mUid != mUidCached && uid != patchDesc->mUid) { 1839 return INVALID_OPERATION; 1840 } 1841 } else { 1842 *handle = 0; 1843 } 1844 1845 if (patch->sources[0].type == AUDIO_PORT_TYPE_MIX) { 1846 // TODO add support for mix to mix connection 1847 if (patch->sinks[0].type != AUDIO_PORT_TYPE_DEVICE) { 1848 ALOGV("createAudioPatch() source mix sink not device"); 1849 return BAD_VALUE; 1850 } 1851 // output mix to output device connection 1852 sp<AudioOutputDescriptor> outputDesc = getOutputFromId(patch->sources[0].id); 1853 if (outputDesc == NULL) { 1854 ALOGV("createAudioPatch() output not found for id %d", patch->sources[0].id); 1855 return BAD_VALUE; 1856 } 1857 ALOG_ASSERT(!outputDesc->isDuplicated(),"duplicated output %d in source in ports", 1858 outputDesc->mIoHandle); 1859 if (patchDesc != 0) { 1860 if (patchDesc->mPatch.sources[0].id != patch->sources[0].id) { 1861 ALOGV("createAudioPatch() source id differs for patch current id %d new id %d", 1862 patchDesc->mPatch.sources[0].id, patch->sources[0].id); 1863 return BAD_VALUE; 1864 } 1865 } 1866 sp<DeviceDescriptor> devDesc = 1867 mAvailableOutputDevices.getDeviceFromId(patch->sinks[0].id); 1868 if (devDesc == 0) { 1869 ALOGV("createAudioPatch() out device not found for id %d", patch->sinks[0].id); 1870 return BAD_VALUE; 1871 } 1872 1873 if (!outputDesc->mProfile->isCompatibleProfile(devDesc->mDeviceType, 1874 patch->sources[0].sample_rate, 1875 patch->sources[0].format, 1876 patch->sources[0].channel_mask, 1877 AUDIO_OUTPUT_FLAG_NONE)) { 1878 return INVALID_OPERATION; 1879 } 1880 // TODO: reconfigure output format and channels here 1881 ALOGV("createAudioPatch() setting device %08x on output %d", 1882 devDesc->mDeviceType, outputDesc->mIoHandle); 1883 setOutputDevice(outputDesc->mIoHandle, 1884 devDesc->mDeviceType, 1885 true, 1886 0, 1887 handle); 1888 index = mAudioPatches.indexOfKey(*handle); 1889 if (index >= 0) { 1890 if (patchDesc != 0 && patchDesc != mAudioPatches.valueAt(index)) { 1891 ALOGW("createAudioPatch() setOutputDevice() did not reuse the patch provided"); 1892 } 1893 patchDesc = mAudioPatches.valueAt(index); 1894 patchDesc->mUid = uid; 1895 ALOGV("createAudioPatch() success"); 1896 } else { 1897 ALOGW("createAudioPatch() setOutputDevice() failed to create a patch"); 1898 return INVALID_OPERATION; 1899 } 1900 } else if (patch->sources[0].type == AUDIO_PORT_TYPE_DEVICE) { 1901 if (patch->sinks[0].type == AUDIO_PORT_TYPE_MIX) { 1902 // input device to input mix connection 1903 sp<AudioInputDescriptor> inputDesc = getInputFromId(patch->sinks[0].id); 1904 if (inputDesc == NULL) { 1905 return BAD_VALUE; 1906 } 1907 if (patchDesc != 0) { 1908 if (patchDesc->mPatch.sinks[0].id != patch->sinks[0].id) { 1909 return BAD_VALUE; 1910 } 1911 } 1912 sp<DeviceDescriptor> devDesc = 1913 mAvailableInputDevices.getDeviceFromId(patch->sources[0].id); 1914 if (devDesc == 0) { 1915 return BAD_VALUE; 1916 } 1917 1918 if (!inputDesc->mProfile->isCompatibleProfile(devDesc->mDeviceType, 1919 patch->sinks[0].sample_rate, 1920 patch->sinks[0].format, 1921 patch->sinks[0].channel_mask, 1922 AUDIO_OUTPUT_FLAG_NONE)) { 1923 return INVALID_OPERATION; 1924 } 1925 // TODO: reconfigure output format and channels here 1926 ALOGV("createAudioPatch() setting device %08x on output %d", 1927 devDesc->mDeviceType, inputDesc->mIoHandle); 1928 setInputDevice(inputDesc->mIoHandle, 1929 devDesc->mDeviceType, 1930 true, 1931 handle); 1932 index = mAudioPatches.indexOfKey(*handle); 1933 if (index >= 0) { 1934 if (patchDesc != 0 && patchDesc != mAudioPatches.valueAt(index)) { 1935 ALOGW("createAudioPatch() setInputDevice() did not reuse the patch provided"); 1936 } 1937 patchDesc = mAudioPatches.valueAt(index); 1938 patchDesc->mUid = uid; 1939 ALOGV("createAudioPatch() success"); 1940 } else { 1941 ALOGW("createAudioPatch() setInputDevice() failed to create a patch"); 1942 return INVALID_OPERATION; 1943 } 1944 } else if (patch->sinks[0].type == AUDIO_PORT_TYPE_DEVICE) { 1945 // device to device connection 1946 if (patchDesc != 0) { 1947 if (patchDesc->mPatch.sources[0].id != patch->sources[0].id && 1948 patchDesc->mPatch.sinks[0].id != patch->sinks[0].id) { 1949 return BAD_VALUE; 1950 } 1951 } 1952 1953 sp<DeviceDescriptor> srcDeviceDesc = 1954 mAvailableInputDevices.getDeviceFromId(patch->sources[0].id); 1955 sp<DeviceDescriptor> sinkDeviceDesc = 1956 mAvailableOutputDevices.getDeviceFromId(patch->sinks[0].id); 1957 if (srcDeviceDesc == 0 || sinkDeviceDesc == 0) { 1958 return BAD_VALUE; 1959 } 1960 //update source and sink with our own data as the data passed in the patch may 1961 // be incomplete. 1962 struct audio_patch newPatch = *patch; 1963 srcDeviceDesc->toAudioPortConfig(&newPatch.sources[0], &patch->sources[0]); 1964 sinkDeviceDesc->toAudioPortConfig(&newPatch.sinks[0], &patch->sinks[0]); 1965 1966 // TODO: add support for devices on different HW modules 1967 if (srcDeviceDesc->mModule != sinkDeviceDesc->mModule) { 1968 return INVALID_OPERATION; 1969 } 1970 // TODO: check from routing capabilities in config file and other conflicting patches 1971 1972 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 1973 if (index >= 0) { 1974 afPatchHandle = patchDesc->mAfPatchHandle; 1975 } 1976 1977 status_t status = mpClientInterface->createAudioPatch(&newPatch, 1978 &afPatchHandle, 1979 0); 1980 ALOGV("createAudioPatch() patch panel returned %d patchHandle %d", 1981 status, afPatchHandle); 1982 if (status == NO_ERROR) { 1983 if (index < 0) { 1984 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 1985 &newPatch, uid); 1986 addAudioPatch(patchDesc->mHandle, patchDesc); 1987 } else { 1988 patchDesc->mPatch = newPatch; 1989 } 1990 patchDesc->mAfPatchHandle = afPatchHandle; 1991 *handle = patchDesc->mHandle; 1992 nextAudioPortGeneration(); 1993 mpClientInterface->onAudioPatchListUpdate(); 1994 } else { 1995 ALOGW("createAudioPatch() patch panel could not connect device patch, error %d", 1996 status); 1997 return INVALID_OPERATION; 1998 } 1999 } else { 2000 return BAD_VALUE; 2001 } 2002 } else { 2003 return BAD_VALUE; 2004 } 2005 return NO_ERROR; 2006} 2007 2008status_t AudioPolicyManager::releaseAudioPatch(audio_patch_handle_t handle, 2009 uid_t uid) 2010{ 2011 ALOGV("releaseAudioPatch() patch %d", handle); 2012 2013 ssize_t index = mAudioPatches.indexOfKey(handle); 2014 2015 if (index < 0) { 2016 return BAD_VALUE; 2017 } 2018 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 2019 ALOGV("releaseAudioPatch() mUidCached %d patchDesc->mUid %d uid %d", 2020 mUidCached, patchDesc->mUid, uid); 2021 if (patchDesc->mUid != mUidCached && uid != patchDesc->mUid) { 2022 return INVALID_OPERATION; 2023 } 2024 2025 struct audio_patch *patch = &patchDesc->mPatch; 2026 patchDesc->mUid = mUidCached; 2027 if (patch->sources[0].type == AUDIO_PORT_TYPE_MIX) { 2028 sp<AudioOutputDescriptor> outputDesc = getOutputFromId(patch->sources[0].id); 2029 if (outputDesc == NULL) { 2030 ALOGV("releaseAudioPatch() output not found for id %d", patch->sources[0].id); 2031 return BAD_VALUE; 2032 } 2033 2034 setOutputDevice(outputDesc->mIoHandle, 2035 getNewOutputDevice(outputDesc->mIoHandle, true /*fromCache*/), 2036 true, 2037 0, 2038 NULL); 2039 } else if (patch->sources[0].type == AUDIO_PORT_TYPE_DEVICE) { 2040 if (patch->sinks[0].type == AUDIO_PORT_TYPE_MIX) { 2041 sp<AudioInputDescriptor> inputDesc = getInputFromId(patch->sinks[0].id); 2042 if (inputDesc == NULL) { 2043 ALOGV("releaseAudioPatch() input not found for id %d", patch->sinks[0].id); 2044 return BAD_VALUE; 2045 } 2046 setInputDevice(inputDesc->mIoHandle, 2047 getNewInputDevice(inputDesc->mIoHandle), 2048 true, 2049 NULL); 2050 } else if (patch->sinks[0].type == AUDIO_PORT_TYPE_DEVICE) { 2051 audio_patch_handle_t afPatchHandle = patchDesc->mAfPatchHandle; 2052 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 2053 ALOGV("releaseAudioPatch() patch panel returned %d patchHandle %d", 2054 status, patchDesc->mAfPatchHandle); 2055 removeAudioPatch(patchDesc->mHandle); 2056 nextAudioPortGeneration(); 2057 mpClientInterface->onAudioPatchListUpdate(); 2058 } else { 2059 return BAD_VALUE; 2060 } 2061 } else { 2062 return BAD_VALUE; 2063 } 2064 return NO_ERROR; 2065} 2066 2067status_t AudioPolicyManager::listAudioPatches(unsigned int *num_patches, 2068 struct audio_patch *patches, 2069 unsigned int *generation) 2070{ 2071 if (num_patches == NULL || (*num_patches != 0 && patches == NULL) || 2072 generation == NULL) { 2073 return BAD_VALUE; 2074 } 2075 ALOGV("listAudioPatches() num_patches %d patches %p available patches %zu", 2076 *num_patches, patches, mAudioPatches.size()); 2077 if (patches == NULL) { 2078 *num_patches = 0; 2079 } 2080 2081 size_t patchesWritten = 0; 2082 size_t patchesMax = *num_patches; 2083 for (size_t i = 0; 2084 i < mAudioPatches.size() && patchesWritten < patchesMax; i++) { 2085 patches[patchesWritten] = mAudioPatches[i]->mPatch; 2086 patches[patchesWritten++].id = mAudioPatches[i]->mHandle; 2087 ALOGV("listAudioPatches() patch %zu num_sources %d num_sinks %d", 2088 i, mAudioPatches[i]->mPatch.num_sources, mAudioPatches[i]->mPatch.num_sinks); 2089 } 2090 *num_patches = mAudioPatches.size(); 2091 2092 *generation = curAudioPortGeneration(); 2093 ALOGV("listAudioPatches() got %zu patches needed %d", patchesWritten, *num_patches); 2094 return NO_ERROR; 2095} 2096 2097status_t AudioPolicyManager::setAudioPortConfig(const struct audio_port_config *config) 2098{ 2099 ALOGV("setAudioPortConfig()"); 2100 2101 if (config == NULL) { 2102 return BAD_VALUE; 2103 } 2104 ALOGV("setAudioPortConfig() on port handle %d", config->id); 2105 // Only support gain configuration for now 2106 if (config->config_mask != AUDIO_PORT_CONFIG_GAIN) { 2107 return INVALID_OPERATION; 2108 } 2109 2110 sp<AudioPortConfig> audioPortConfig; 2111 if (config->type == AUDIO_PORT_TYPE_MIX) { 2112 if (config->role == AUDIO_PORT_ROLE_SOURCE) { 2113 sp<AudioOutputDescriptor> outputDesc = getOutputFromId(config->id); 2114 if (outputDesc == NULL) { 2115 return BAD_VALUE; 2116 } 2117 ALOG_ASSERT(!outputDesc->isDuplicated(), 2118 "setAudioPortConfig() called on duplicated output %d", 2119 outputDesc->mIoHandle); 2120 audioPortConfig = outputDesc; 2121 } else if (config->role == AUDIO_PORT_ROLE_SINK) { 2122 sp<AudioInputDescriptor> inputDesc = getInputFromId(config->id); 2123 if (inputDesc == NULL) { 2124 return BAD_VALUE; 2125 } 2126 audioPortConfig = inputDesc; 2127 } else { 2128 return BAD_VALUE; 2129 } 2130 } else if (config->type == AUDIO_PORT_TYPE_DEVICE) { 2131 sp<DeviceDescriptor> deviceDesc; 2132 if (config->role == AUDIO_PORT_ROLE_SOURCE) { 2133 deviceDesc = mAvailableInputDevices.getDeviceFromId(config->id); 2134 } else if (config->role == AUDIO_PORT_ROLE_SINK) { 2135 deviceDesc = mAvailableOutputDevices.getDeviceFromId(config->id); 2136 } else { 2137 return BAD_VALUE; 2138 } 2139 if (deviceDesc == NULL) { 2140 return BAD_VALUE; 2141 } 2142 audioPortConfig = deviceDesc; 2143 } else { 2144 return BAD_VALUE; 2145 } 2146 2147 struct audio_port_config backupConfig; 2148 status_t status = audioPortConfig->applyAudioPortConfig(config, &backupConfig); 2149 if (status == NO_ERROR) { 2150 struct audio_port_config newConfig; 2151 audioPortConfig->toAudioPortConfig(&newConfig, config); 2152 status = mpClientInterface->setAudioPortConfig(&newConfig, 0); 2153 } 2154 if (status != NO_ERROR) { 2155 audioPortConfig->applyAudioPortConfig(&backupConfig); 2156 } 2157 2158 return status; 2159} 2160 2161void AudioPolicyManager::clearAudioPatches(uid_t uid) 2162{ 2163 for (ssize_t i = 0; i < (ssize_t)mAudioPatches.size(); i++) { 2164 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(i); 2165 if (patchDesc->mUid == uid) { 2166 // releaseAudioPatch() removes the patch from mAudioPatches 2167 if (releaseAudioPatch(mAudioPatches.keyAt(i), uid) == NO_ERROR) { 2168 i--; 2169 } 2170 } 2171 } 2172} 2173 2174status_t AudioPolicyManager::addAudioPatch(audio_patch_handle_t handle, 2175 const sp<AudioPatch>& patch) 2176{ 2177 ssize_t index = mAudioPatches.indexOfKey(handle); 2178 2179 if (index >= 0) { 2180 ALOGW("addAudioPatch() patch %d already in", handle); 2181 return ALREADY_EXISTS; 2182 } 2183 mAudioPatches.add(handle, patch); 2184 ALOGV("addAudioPatch() handle %d af handle %d num_sources %d num_sinks %d source handle %d" 2185 "sink handle %d", 2186 handle, patch->mAfPatchHandle, patch->mPatch.num_sources, patch->mPatch.num_sinks, 2187 patch->mPatch.sources[0].id, patch->mPatch.sinks[0].id); 2188 return NO_ERROR; 2189} 2190 2191status_t AudioPolicyManager::removeAudioPatch(audio_patch_handle_t handle) 2192{ 2193 ssize_t index = mAudioPatches.indexOfKey(handle); 2194 2195 if (index < 0) { 2196 ALOGW("removeAudioPatch() patch %d not in", handle); 2197 return ALREADY_EXISTS; 2198 } 2199 ALOGV("removeAudioPatch() handle %d af handle %d", handle, 2200 mAudioPatches.valueAt(index)->mAfPatchHandle); 2201 mAudioPatches.removeItemsAt(index); 2202 return NO_ERROR; 2203} 2204 2205// ---------------------------------------------------------------------------- 2206// AudioPolicyManager 2207// ---------------------------------------------------------------------------- 2208 2209uint32_t AudioPolicyManager::nextUniqueId() 2210{ 2211 return android_atomic_inc(&mNextUniqueId); 2212} 2213 2214uint32_t AudioPolicyManager::nextAudioPortGeneration() 2215{ 2216 return android_atomic_inc(&mAudioPortGeneration); 2217} 2218 2219AudioPolicyManager::AudioPolicyManager(AudioPolicyClientInterface *clientInterface) 2220 : 2221#ifdef AUDIO_POLICY_TEST 2222 Thread(false), 2223#endif //AUDIO_POLICY_TEST 2224 mPrimaryOutput((audio_io_handle_t)0), 2225 mPhoneState(AUDIO_MODE_NORMAL), 2226 mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f), 2227 mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0), 2228 mA2dpSuspended(false), 2229 mSpeakerDrcEnabled(false), mNextUniqueId(1), 2230 mAudioPortGeneration(1) 2231{ 2232 mUidCached = getuid(); 2233 mpClientInterface = clientInterface; 2234 2235 for (int i = 0; i < AUDIO_POLICY_FORCE_USE_CNT; i++) { 2236 mForceUse[i] = AUDIO_POLICY_FORCE_NONE; 2237 } 2238 2239 mDefaultOutputDevice = new DeviceDescriptor(String8(""), AUDIO_DEVICE_OUT_SPEAKER); 2240 if (loadAudioPolicyConfig(AUDIO_POLICY_VENDOR_CONFIG_FILE) != NO_ERROR) { 2241 if (loadAudioPolicyConfig(AUDIO_POLICY_CONFIG_FILE) != NO_ERROR) { 2242 ALOGE("could not load audio policy configuration file, setting defaults"); 2243 defaultAudioPolicyConfig(); 2244 } 2245 } 2246 // mAvailableOutputDevices and mAvailableInputDevices now contain all attached devices 2247 2248 // must be done after reading the policy 2249 initializeVolumeCurves(); 2250 2251 // open all output streams needed to access attached devices 2252 audio_devices_t outputDeviceTypes = mAvailableOutputDevices.types(); 2253 audio_devices_t inputDeviceTypes = mAvailableInputDevices.types() & ~AUDIO_DEVICE_BIT_IN; 2254 for (size_t i = 0; i < mHwModules.size(); i++) { 2255 mHwModules[i]->mHandle = mpClientInterface->loadHwModule(mHwModules[i]->mName); 2256 if (mHwModules[i]->mHandle == 0) { 2257 ALOGW("could not open HW module %s", mHwModules[i]->mName); 2258 continue; 2259 } 2260 // open all output streams needed to access attached devices 2261 // except for direct output streams that are only opened when they are actually 2262 // required by an app. 2263 // This also validates mAvailableOutputDevices list 2264 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 2265 { 2266 const sp<IOProfile> outProfile = mHwModules[i]->mOutputProfiles[j]; 2267 2268 if (outProfile->mSupportedDevices.isEmpty()) { 2269 ALOGW("Output profile contains no device on module %s", mHwModules[i]->mName); 2270 continue; 2271 } 2272 2273 audio_devices_t profileTypes = outProfile->mSupportedDevices.types(); 2274 if ((profileTypes & outputDeviceTypes) && 2275 ((outProfile->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) == 0)) { 2276 sp<AudioOutputDescriptor> outputDesc = new AudioOutputDescriptor(outProfile); 2277 2278 outputDesc->mDevice = (audio_devices_t)(mDefaultOutputDevice->mDeviceType & profileTypes); 2279 audio_io_handle_t output = mpClientInterface->openOutput( 2280 outProfile->mModule->mHandle, 2281 &outputDesc->mDevice, 2282 &outputDesc->mSamplingRate, 2283 &outputDesc->mFormat, 2284 &outputDesc->mChannelMask, 2285 &outputDesc->mLatency, 2286 outputDesc->mFlags); 2287 if (output == 0) { 2288 ALOGW("Cannot open output stream for device %08x on hw module %s", 2289 outputDesc->mDevice, 2290 mHwModules[i]->mName); 2291 } else { 2292 for (size_t k = 0; k < outProfile->mSupportedDevices.size(); k++) { 2293 audio_devices_t type = outProfile->mSupportedDevices[k]->mDeviceType; 2294 ssize_t index = 2295 mAvailableOutputDevices.indexOf(outProfile->mSupportedDevices[k]); 2296 // give a valid ID to an attached device once confirmed it is reachable 2297 if ((index >= 0) && (mAvailableOutputDevices[index]->mId == 0)) { 2298 mAvailableOutputDevices[index]->mId = nextUniqueId(); 2299 mAvailableOutputDevices[index]->mModule = mHwModules[i]; 2300 } 2301 } 2302 if (mPrimaryOutput == 0 && 2303 outProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) { 2304 mPrimaryOutput = output; 2305 } 2306 addOutput(output, outputDesc); 2307 ALOGI("CSTOR setOutputDevice %08x", outputDesc->mDevice); 2308 setOutputDevice(output, 2309 outputDesc->mDevice, 2310 true); 2311 } 2312 } 2313 } 2314 // open input streams needed to access attached devices to validate 2315 // mAvailableInputDevices list 2316 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) 2317 { 2318 const sp<IOProfile> inProfile = mHwModules[i]->mInputProfiles[j]; 2319 2320 if (inProfile->mSupportedDevices.isEmpty()) { 2321 ALOGW("Input profile contains no device on module %s", mHwModules[i]->mName); 2322 continue; 2323 } 2324 2325 audio_devices_t profileTypes = inProfile->mSupportedDevices.types(); 2326 if (profileTypes & inputDeviceTypes) { 2327 sp<AudioInputDescriptor> inputDesc = new AudioInputDescriptor(inProfile); 2328 2329 inputDesc->mInputSource = AUDIO_SOURCE_MIC; 2330 inputDesc->mDevice = inProfile->mSupportedDevices[0]->mDeviceType; 2331 audio_io_handle_t input = mpClientInterface->openInput( 2332 inProfile->mModule->mHandle, 2333 &inputDesc->mDevice, 2334 &inputDesc->mSamplingRate, 2335 &inputDesc->mFormat, 2336 &inputDesc->mChannelMask, 2337 AUDIO_INPUT_FLAG_FAST /*FIXME*/); 2338 2339 if (input != 0) { 2340 for (size_t k = 0; k < inProfile->mSupportedDevices.size(); k++) { 2341 audio_devices_t type = inProfile->mSupportedDevices[k]->mDeviceType; 2342 ssize_t index = 2343 mAvailableInputDevices.indexOf(inProfile->mSupportedDevices[k]); 2344 // give a valid ID to an attached device once confirmed it is reachable 2345 if ((index >= 0) && (mAvailableInputDevices[index]->mId == 0)) { 2346 mAvailableInputDevices[index]->mId = nextUniqueId(); 2347 mAvailableInputDevices[index]->mModule = mHwModules[i]; 2348 } 2349 } 2350 mpClientInterface->closeInput(input); 2351 } else { 2352 ALOGW("Cannot open input stream for device %08x on hw module %s", 2353 inputDesc->mDevice, 2354 mHwModules[i]->mName); 2355 } 2356 } 2357 } 2358 } 2359 // make sure all attached devices have been allocated a unique ID 2360 for (size_t i = 0; i < mAvailableOutputDevices.size();) { 2361 if (mAvailableOutputDevices[i]->mId == 0) { 2362 ALOGW("Input device %08x unreachable", mAvailableOutputDevices[i]->mDeviceType); 2363 mAvailableOutputDevices.remove(mAvailableOutputDevices[i]); 2364 continue; 2365 } 2366 i++; 2367 } 2368 for (size_t i = 0; i < mAvailableInputDevices.size();) { 2369 if (mAvailableInputDevices[i]->mId == 0) { 2370 ALOGW("Input device %08x unreachable", mAvailableInputDevices[i]->mDeviceType); 2371 mAvailableInputDevices.remove(mAvailableInputDevices[i]); 2372 continue; 2373 } 2374 i++; 2375 } 2376 // make sure default device is reachable 2377 if (mAvailableOutputDevices.indexOf(mDefaultOutputDevice) < 0) { 2378 ALOGE("Default device %08x is unreachable", mDefaultOutputDevice->mDeviceType); 2379 } 2380 2381 ALOGE_IF((mPrimaryOutput == 0), "Failed to open primary output"); 2382 2383 updateDevicesAndOutputs(); 2384 2385#ifdef AUDIO_POLICY_TEST 2386 if (mPrimaryOutput != 0) { 2387 AudioParameter outputCmd = AudioParameter(); 2388 outputCmd.addInt(String8("set_id"), 0); 2389 mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString()); 2390 2391 mTestDevice = AUDIO_DEVICE_OUT_SPEAKER; 2392 mTestSamplingRate = 44100; 2393 mTestFormat = AUDIO_FORMAT_PCM_16_BIT; 2394 mTestChannels = AUDIO_CHANNEL_OUT_STEREO; 2395 mTestLatencyMs = 0; 2396 mCurOutput = 0; 2397 mDirectOutput = false; 2398 for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { 2399 mTestOutputs[i] = 0; 2400 } 2401 2402 const size_t SIZE = 256; 2403 char buffer[SIZE]; 2404 snprintf(buffer, SIZE, "AudioPolicyManagerTest"); 2405 run(buffer, ANDROID_PRIORITY_AUDIO); 2406 } 2407#endif //AUDIO_POLICY_TEST 2408} 2409 2410AudioPolicyManager::~AudioPolicyManager() 2411{ 2412#ifdef AUDIO_POLICY_TEST 2413 exit(); 2414#endif //AUDIO_POLICY_TEST 2415 for (size_t i = 0; i < mOutputs.size(); i++) { 2416 mpClientInterface->closeOutput(mOutputs.keyAt(i)); 2417 } 2418 for (size_t i = 0; i < mInputs.size(); i++) { 2419 mpClientInterface->closeInput(mInputs.keyAt(i)); 2420 } 2421 mAvailableOutputDevices.clear(); 2422 mAvailableInputDevices.clear(); 2423 mOutputs.clear(); 2424 mInputs.clear(); 2425 mHwModules.clear(); 2426} 2427 2428status_t AudioPolicyManager::initCheck() 2429{ 2430 return (mPrimaryOutput == 0) ? NO_INIT : NO_ERROR; 2431} 2432 2433#ifdef AUDIO_POLICY_TEST 2434bool AudioPolicyManager::threadLoop() 2435{ 2436 ALOGV("entering threadLoop()"); 2437 while (!exitPending()) 2438 { 2439 String8 command; 2440 int valueInt; 2441 String8 value; 2442 2443 Mutex::Autolock _l(mLock); 2444 mWaitWorkCV.waitRelative(mLock, milliseconds(50)); 2445 2446 command = mpClientInterface->getParameters(0, String8("test_cmd_policy")); 2447 AudioParameter param = AudioParameter(command); 2448 2449 if (param.getInt(String8("test_cmd_policy"), valueInt) == NO_ERROR && 2450 valueInt != 0) { 2451 ALOGV("Test command %s received", command.string()); 2452 String8 target; 2453 if (param.get(String8("target"), target) != NO_ERROR) { 2454 target = "Manager"; 2455 } 2456 if (param.getInt(String8("test_cmd_policy_output"), valueInt) == NO_ERROR) { 2457 param.remove(String8("test_cmd_policy_output")); 2458 mCurOutput = valueInt; 2459 } 2460 if (param.get(String8("test_cmd_policy_direct"), value) == NO_ERROR) { 2461 param.remove(String8("test_cmd_policy_direct")); 2462 if (value == "false") { 2463 mDirectOutput = false; 2464 } else if (value == "true") { 2465 mDirectOutput = true; 2466 } 2467 } 2468 if (param.getInt(String8("test_cmd_policy_input"), valueInt) == NO_ERROR) { 2469 param.remove(String8("test_cmd_policy_input")); 2470 mTestInput = valueInt; 2471 } 2472 2473 if (param.get(String8("test_cmd_policy_format"), value) == NO_ERROR) { 2474 param.remove(String8("test_cmd_policy_format")); 2475 int format = AUDIO_FORMAT_INVALID; 2476 if (value == "PCM 16 bits") { 2477 format = AUDIO_FORMAT_PCM_16_BIT; 2478 } else if (value == "PCM 8 bits") { 2479 format = AUDIO_FORMAT_PCM_8_BIT; 2480 } else if (value == "Compressed MP3") { 2481 format = AUDIO_FORMAT_MP3; 2482 } 2483 if (format != AUDIO_FORMAT_INVALID) { 2484 if (target == "Manager") { 2485 mTestFormat = format; 2486 } else if (mTestOutputs[mCurOutput] != 0) { 2487 AudioParameter outputParam = AudioParameter(); 2488 outputParam.addInt(String8("format"), format); 2489 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2490 } 2491 } 2492 } 2493 if (param.get(String8("test_cmd_policy_channels"), value) == NO_ERROR) { 2494 param.remove(String8("test_cmd_policy_channels")); 2495 int channels = 0; 2496 2497 if (value == "Channels Stereo") { 2498 channels = AUDIO_CHANNEL_OUT_STEREO; 2499 } else if (value == "Channels Mono") { 2500 channels = AUDIO_CHANNEL_OUT_MONO; 2501 } 2502 if (channels != 0) { 2503 if (target == "Manager") { 2504 mTestChannels = channels; 2505 } else if (mTestOutputs[mCurOutput] != 0) { 2506 AudioParameter outputParam = AudioParameter(); 2507 outputParam.addInt(String8("channels"), channels); 2508 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2509 } 2510 } 2511 } 2512 if (param.getInt(String8("test_cmd_policy_sampleRate"), valueInt) == NO_ERROR) { 2513 param.remove(String8("test_cmd_policy_sampleRate")); 2514 if (valueInt >= 0 && valueInt <= 96000) { 2515 int samplingRate = valueInt; 2516 if (target == "Manager") { 2517 mTestSamplingRate = samplingRate; 2518 } else if (mTestOutputs[mCurOutput] != 0) { 2519 AudioParameter outputParam = AudioParameter(); 2520 outputParam.addInt(String8("sampling_rate"), samplingRate); 2521 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2522 } 2523 } 2524 } 2525 2526 if (param.get(String8("test_cmd_policy_reopen"), value) == NO_ERROR) { 2527 param.remove(String8("test_cmd_policy_reopen")); 2528 2529 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(mPrimaryOutput); 2530 mpClientInterface->closeOutput(mPrimaryOutput); 2531 2532 audio_module_handle_t moduleHandle = outputDesc->mModule->mHandle; 2533 2534 mOutputs.removeItem(mPrimaryOutput); 2535 2536 sp<AudioOutputDescriptor> outputDesc = new AudioOutputDescriptor(NULL); 2537 outputDesc->mDevice = AUDIO_DEVICE_OUT_SPEAKER; 2538 mPrimaryOutput = mpClientInterface->openOutput(moduleHandle, 2539 &outputDesc->mDevice, 2540 &outputDesc->mSamplingRate, 2541 &outputDesc->mFormat, 2542 &outputDesc->mChannelMask, 2543 &outputDesc->mLatency, 2544 outputDesc->mFlags); 2545 if (mPrimaryOutput == 0) { 2546 ALOGE("Failed to reopen hardware output stream, samplingRate: %d, format %d, channels %d", 2547 outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannelMask); 2548 } else { 2549 AudioParameter outputCmd = AudioParameter(); 2550 outputCmd.addInt(String8("set_id"), 0); 2551 mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString()); 2552 addOutput(mPrimaryOutput, outputDesc); 2553 } 2554 } 2555 2556 2557 mpClientInterface->setParameters(0, String8("test_cmd_policy=")); 2558 } 2559 } 2560 return false; 2561} 2562 2563void AudioPolicyManager::exit() 2564{ 2565 { 2566 AutoMutex _l(mLock); 2567 requestExit(); 2568 mWaitWorkCV.signal(); 2569 } 2570 requestExitAndWait(); 2571} 2572 2573int AudioPolicyManager::testOutputIndex(audio_io_handle_t output) 2574{ 2575 for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { 2576 if (output == mTestOutputs[i]) return i; 2577 } 2578 return 0; 2579} 2580#endif //AUDIO_POLICY_TEST 2581 2582// --- 2583 2584void AudioPolicyManager::addOutput(audio_io_handle_t output, sp<AudioOutputDescriptor> outputDesc) 2585{ 2586 outputDesc->mIoHandle = output; 2587 outputDesc->mId = nextUniqueId(); 2588 mOutputs.add(output, outputDesc); 2589 nextAudioPortGeneration(); 2590} 2591 2592void AudioPolicyManager::addInput(audio_io_handle_t input, sp<AudioInputDescriptor> inputDesc) 2593{ 2594 inputDesc->mIoHandle = input; 2595 inputDesc->mId = nextUniqueId(); 2596 mInputs.add(input, inputDesc); 2597 nextAudioPortGeneration(); 2598} 2599 2600String8 AudioPolicyManager::addressToParameter(audio_devices_t device, const String8 address) 2601{ 2602 if (device & AUDIO_DEVICE_OUT_ALL_A2DP) { 2603 return String8("a2dp_sink_address=")+address; 2604 } 2605 return address; 2606} 2607 2608status_t AudioPolicyManager::checkOutputsForDevice(audio_devices_t device, 2609 audio_policy_dev_state_t state, 2610 SortedVector<audio_io_handle_t>& outputs, 2611 const String8 address) 2612{ 2613 sp<AudioOutputDescriptor> desc; 2614 2615 if (state == AUDIO_POLICY_DEVICE_STATE_AVAILABLE) { 2616 // first list already open outputs that can be routed to this device 2617 for (size_t i = 0; i < mOutputs.size(); i++) { 2618 desc = mOutputs.valueAt(i); 2619 if (!desc->isDuplicated() && (desc->mProfile->mSupportedDevices.types() & device)) { 2620 ALOGV("checkOutputsForDevice(): adding opened output %d", mOutputs.keyAt(i)); 2621 outputs.add(mOutputs.keyAt(i)); 2622 } 2623 } 2624 // then look for output profiles that can be routed to this device 2625 SortedVector< sp<IOProfile> > profiles; 2626 for (size_t i = 0; i < mHwModules.size(); i++) 2627 { 2628 if (mHwModules[i]->mHandle == 0) { 2629 continue; 2630 } 2631 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 2632 { 2633 if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices.types() & device) { 2634 ALOGV("checkOutputsForDevice(): adding profile %zu from module %zu", j, i); 2635 profiles.add(mHwModules[i]->mOutputProfiles[j]); 2636 } 2637 } 2638 } 2639 2640 if (profiles.isEmpty() && outputs.isEmpty()) { 2641 ALOGW("checkOutputsForDevice(): No output available for device %04x", device); 2642 return BAD_VALUE; 2643 } 2644 2645 // open outputs for matching profiles if needed. Direct outputs are also opened to 2646 // query for dynamic parameters and will be closed later by setDeviceConnectionState() 2647 for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) { 2648 sp<IOProfile> profile = profiles[profile_index]; 2649 2650 // nothing to do if one output is already opened for this profile 2651 size_t j; 2652 for (j = 0; j < mOutputs.size(); j++) { 2653 desc = mOutputs.valueAt(j); 2654 if (!desc->isDuplicated() && desc->mProfile == profile) { 2655 break; 2656 } 2657 } 2658 if (j != mOutputs.size()) { 2659 continue; 2660 } 2661 2662 ALOGV("opening output for device %08x with params %s", device, address.string()); 2663 desc = new AudioOutputDescriptor(profile); 2664 desc->mDevice = device; 2665 audio_offload_info_t offloadInfo = AUDIO_INFO_INITIALIZER; 2666 offloadInfo.sample_rate = desc->mSamplingRate; 2667 offloadInfo.format = desc->mFormat; 2668 offloadInfo.channel_mask = desc->mChannelMask; 2669 2670 audio_io_handle_t output = mpClientInterface->openOutput(profile->mModule->mHandle, 2671 &desc->mDevice, 2672 &desc->mSamplingRate, 2673 &desc->mFormat, 2674 &desc->mChannelMask, 2675 &desc->mLatency, 2676 desc->mFlags, 2677 &offloadInfo); 2678 if (output != 0) { 2679 // Here is where the out_set_parameters() for card & device gets called 2680 if (!address.isEmpty()) { 2681 mpClientInterface->setParameters(output, addressToParameter(device, address)); 2682 } 2683 2684 // Here is where we step through and resolve any "dynamic" fields 2685 String8 reply; 2686 char *value; 2687 if (profile->mSamplingRates[0] == 0) { 2688 reply = mpClientInterface->getParameters(output, 2689 String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES)); 2690 ALOGV("checkOutputsForDevice() direct output sup sampling rates %s", 2691 reply.string()); 2692 value = strpbrk((char *)reply.string(), "="); 2693 if (value != NULL) { 2694 profile->loadSamplingRates(value + 1); 2695 } 2696 } 2697 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 2698 reply = mpClientInterface->getParameters(output, 2699 String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS)); 2700 ALOGV("checkOutputsForDevice() direct output sup formats %s", 2701 reply.string()); 2702 value = strpbrk((char *)reply.string(), "="); 2703 if (value != NULL) { 2704 profile->loadFormats(value + 1); 2705 } 2706 } 2707 if (profile->mChannelMasks[0] == 0) { 2708 reply = mpClientInterface->getParameters(output, 2709 String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS)); 2710 ALOGV("checkOutputsForDevice() direct output sup channel masks %s", 2711 reply.string()); 2712 value = strpbrk((char *)reply.string(), "="); 2713 if (value != NULL) { 2714 profile->loadOutChannels(value + 1); 2715 } 2716 } 2717 if (((profile->mSamplingRates[0] == 0) && 2718 (profile->mSamplingRates.size() < 2)) || 2719 ((profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) && 2720 (profile->mFormats.size() < 2)) || 2721 ((profile->mChannelMasks[0] == 0) && 2722 (profile->mChannelMasks.size() < 2))) { 2723 ALOGW("checkOutputsForDevice() direct output missing param"); 2724 mpClientInterface->closeOutput(output); 2725 output = 0; 2726 } else if (profile->mSamplingRates[0] == 0 || profile->mFormats[0] == 0 || 2727 profile->mChannelMasks[0] == 0) { 2728 mpClientInterface->closeOutput(output); 2729 desc->mSamplingRate = profile->pickSamplingRate(); 2730 desc->mFormat = profile->pickFormat(); 2731 desc->mChannelMask = profile->pickChannelMask(); 2732 offloadInfo.sample_rate = desc->mSamplingRate; 2733 offloadInfo.format = desc->mFormat; 2734 offloadInfo.channel_mask = desc->mChannelMask; 2735 output = mpClientInterface->openOutput( 2736 profile->mModule->mHandle, 2737 &desc->mDevice, 2738 &desc->mSamplingRate, 2739 &desc->mFormat, 2740 &desc->mChannelMask, 2741 &desc->mLatency, 2742 desc->mFlags, 2743 &offloadInfo); 2744 } 2745 2746 if (output != 0) { 2747 addOutput(output, desc); 2748 if ((desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) == 0) { 2749 audio_io_handle_t duplicatedOutput = 0; 2750 2751 // set initial stream volume for device 2752 applyStreamVolumes(output, device, 0, true); 2753 2754 //TODO: configure audio effect output stage here 2755 2756 // open a duplicating output thread for the new output and the primary output 2757 duplicatedOutput = mpClientInterface->openDuplicateOutput(output, 2758 mPrimaryOutput); 2759 if (duplicatedOutput != 0) { 2760 // add duplicated output descriptor 2761 sp<AudioOutputDescriptor> dupOutputDesc = new AudioOutputDescriptor(NULL); 2762 dupOutputDesc->mOutput1 = mOutputs.valueFor(mPrimaryOutput); 2763 dupOutputDesc->mOutput2 = mOutputs.valueFor(output); 2764 dupOutputDesc->mSamplingRate = desc->mSamplingRate; 2765 dupOutputDesc->mFormat = desc->mFormat; 2766 dupOutputDesc->mChannelMask = desc->mChannelMask; 2767 dupOutputDesc->mLatency = desc->mLatency; 2768 addOutput(duplicatedOutput, dupOutputDesc); 2769 applyStreamVolumes(duplicatedOutput, device, 0, true); 2770 } else { 2771 ALOGW("checkOutputsForDevice() could not open dup output for %d and %d", 2772 mPrimaryOutput, output); 2773 mpClientInterface->closeOutput(output); 2774 mOutputs.removeItem(output); 2775 nextAudioPortGeneration(); 2776 output = 0; 2777 } 2778 } 2779 } 2780 } 2781 if (output == 0) { 2782 ALOGW("checkOutputsForDevice() could not open output for device %x", device); 2783 profiles.removeAt(profile_index); 2784 profile_index--; 2785 } else { 2786 outputs.add(output); 2787 ALOGV("checkOutputsForDevice(): adding output %d", output); 2788 } 2789 } 2790 2791 if (profiles.isEmpty()) { 2792 ALOGW("checkOutputsForDevice(): No output available for device %04x", device); 2793 return BAD_VALUE; 2794 } 2795 } else { // Disconnect 2796 // check if one opened output is not needed any more after disconnecting one device 2797 for (size_t i = 0; i < mOutputs.size(); i++) { 2798 desc = mOutputs.valueAt(i); 2799 if (!desc->isDuplicated() && 2800 !(desc->mProfile->mSupportedDevices.types() & 2801 mAvailableOutputDevices.types())) { 2802 ALOGV("checkOutputsForDevice(): disconnecting adding output %d", mOutputs.keyAt(i)); 2803 outputs.add(mOutputs.keyAt(i)); 2804 } 2805 } 2806 // Clear any profiles associated with the disconnected device. 2807 for (size_t i = 0; i < mHwModules.size(); i++) 2808 { 2809 if (mHwModules[i]->mHandle == 0) { 2810 continue; 2811 } 2812 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 2813 { 2814 sp<IOProfile> profile = mHwModules[i]->mOutputProfiles[j]; 2815 if (profile->mSupportedDevices.types() & device) { 2816 ALOGV("checkOutputsForDevice(): " 2817 "clearing direct output profile %zu on module %zu", j, i); 2818 if (profile->mSamplingRates[0] == 0) { 2819 profile->mSamplingRates.clear(); 2820 profile->mSamplingRates.add(0); 2821 } 2822 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 2823 profile->mFormats.clear(); 2824 profile->mFormats.add(AUDIO_FORMAT_DEFAULT); 2825 } 2826 if (profile->mChannelMasks[0] == 0) { 2827 profile->mChannelMasks.clear(); 2828 profile->mChannelMasks.add(0); 2829 } 2830 } 2831 } 2832 } 2833 } 2834 return NO_ERROR; 2835} 2836 2837status_t AudioPolicyManager::checkInputsForDevice(audio_devices_t device, 2838 audio_policy_dev_state_t state, 2839 SortedVector<audio_io_handle_t>& inputs, 2840 const String8 address) 2841{ 2842 sp<AudioInputDescriptor> desc; 2843 if (state == AUDIO_POLICY_DEVICE_STATE_AVAILABLE) { 2844 // first list already open inputs that can be routed to this device 2845 for (size_t input_index = 0; input_index < mInputs.size(); input_index++) { 2846 desc = mInputs.valueAt(input_index); 2847 if (desc->mProfile->mSupportedDevices.types() & (device & ~AUDIO_DEVICE_BIT_IN)) { 2848 ALOGV("checkInputsForDevice(): adding opened input %d", mInputs.keyAt(input_index)); 2849 inputs.add(mInputs.keyAt(input_index)); 2850 } 2851 } 2852 2853 // then look for input profiles that can be routed to this device 2854 SortedVector< sp<IOProfile> > profiles; 2855 for (size_t module_idx = 0; module_idx < mHwModules.size(); module_idx++) 2856 { 2857 if (mHwModules[module_idx]->mHandle == 0) { 2858 continue; 2859 } 2860 for (size_t profile_index = 0; 2861 profile_index < mHwModules[module_idx]->mInputProfiles.size(); 2862 profile_index++) 2863 { 2864 if (mHwModules[module_idx]->mInputProfiles[profile_index]->mSupportedDevices.types() 2865 & (device & ~AUDIO_DEVICE_BIT_IN)) { 2866 ALOGV("checkInputsForDevice(): adding profile %zu from module %zu", 2867 profile_index, module_idx); 2868 profiles.add(mHwModules[module_idx]->mInputProfiles[profile_index]); 2869 } 2870 } 2871 } 2872 2873 if (profiles.isEmpty() && inputs.isEmpty()) { 2874 ALOGW("checkInputsForDevice(): No input available for device 0x%X", device); 2875 return BAD_VALUE; 2876 } 2877 2878 // open inputs for matching profiles if needed. Direct inputs are also opened to 2879 // query for dynamic parameters and will be closed later by setDeviceConnectionState() 2880 for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) { 2881 2882 sp<IOProfile> profile = profiles[profile_index]; 2883 // nothing to do if one input is already opened for this profile 2884 size_t input_index; 2885 for (input_index = 0; input_index < mInputs.size(); input_index++) { 2886 desc = mInputs.valueAt(input_index); 2887 if (desc->mProfile == profile) { 2888 break; 2889 } 2890 } 2891 if (input_index != mInputs.size()) { 2892 continue; 2893 } 2894 2895 ALOGV("opening input for device 0x%X with params %s", device, address.string()); 2896 desc = new AudioInputDescriptor(profile); 2897 desc->mDevice = device; 2898 2899 audio_io_handle_t input = mpClientInterface->openInput(profile->mModule->mHandle, 2900 &desc->mDevice, 2901 &desc->mSamplingRate, 2902 &desc->mFormat, 2903 &desc->mChannelMask, 2904 AUDIO_INPUT_FLAG_FAST /*FIXME*/); 2905 2906 if (input != 0) { 2907 if (!address.isEmpty()) { 2908 mpClientInterface->setParameters(input, addressToParameter(device, address)); 2909 } 2910 2911 // Here is where we step through and resolve any "dynamic" fields 2912 String8 reply; 2913 char *value; 2914 if (profile->mSamplingRates[0] == 0) { 2915 reply = mpClientInterface->getParameters(input, 2916 String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES)); 2917 ALOGV("checkInputsForDevice() direct input sup sampling rates %s", 2918 reply.string()); 2919 value = strpbrk((char *)reply.string(), "="); 2920 if (value != NULL) { 2921 profile->loadSamplingRates(value + 1); 2922 } 2923 } 2924 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 2925 reply = mpClientInterface->getParameters(input, 2926 String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS)); 2927 ALOGV("checkInputsForDevice() direct input sup formats %s", reply.string()); 2928 value = strpbrk((char *)reply.string(), "="); 2929 if (value != NULL) { 2930 profile->loadFormats(value + 1); 2931 } 2932 } 2933 if (profile->mChannelMasks[0] == 0) { 2934 reply = mpClientInterface->getParameters(input, 2935 String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS)); 2936 ALOGV("checkInputsForDevice() direct input sup channel masks %s", 2937 reply.string()); 2938 value = strpbrk((char *)reply.string(), "="); 2939 if (value != NULL) { 2940 profile->loadInChannels(value + 1); 2941 } 2942 } 2943 if (((profile->mSamplingRates[0] == 0) && (profile->mSamplingRates.size() < 2)) || 2944 ((profile->mFormats[0] == 0) && (profile->mFormats.size() < 2)) || 2945 ((profile->mChannelMasks[0] == 0) && (profile->mChannelMasks.size() < 2))) { 2946 ALOGW("checkInputsForDevice() direct input missing param"); 2947 mpClientInterface->closeInput(input); 2948 input = 0; 2949 } 2950 2951 if (input != 0) { 2952 addInput(input, desc); 2953 } 2954 } // endif input != 0 2955 2956 if (input == 0) { 2957 ALOGW("checkInputsForDevice() could not open input for device 0x%X", device); 2958 profiles.removeAt(profile_index); 2959 profile_index--; 2960 } else { 2961 inputs.add(input); 2962 ALOGV("checkInputsForDevice(): adding input %d", input); 2963 } 2964 } // end scan profiles 2965 2966 if (profiles.isEmpty()) { 2967 ALOGW("checkInputsForDevice(): No input available for device 0x%X", device); 2968 return BAD_VALUE; 2969 } 2970 } else { 2971 // Disconnect 2972 // check if one opened input is not needed any more after disconnecting one device 2973 for (size_t input_index = 0; input_index < mInputs.size(); input_index++) { 2974 desc = mInputs.valueAt(input_index); 2975 if (!(desc->mProfile->mSupportedDevices.types() & mAvailableInputDevices.types())) { 2976 ALOGV("checkInputsForDevice(): disconnecting adding input %d", 2977 mInputs.keyAt(input_index)); 2978 inputs.add(mInputs.keyAt(input_index)); 2979 } 2980 } 2981 // Clear any profiles associated with the disconnected device. 2982 for (size_t module_index = 0; module_index < mHwModules.size(); module_index++) { 2983 if (mHwModules[module_index]->mHandle == 0) { 2984 continue; 2985 } 2986 for (size_t profile_index = 0; 2987 profile_index < mHwModules[module_index]->mInputProfiles.size(); 2988 profile_index++) { 2989 sp<IOProfile> profile = mHwModules[module_index]->mInputProfiles[profile_index]; 2990 if (profile->mSupportedDevices.types() & device) { 2991 ALOGV("checkInputsForDevice(): clearing direct input profile %zu on module %zu", 2992 profile_index, module_index); 2993 if (profile->mSamplingRates[0] == 0) { 2994 profile->mSamplingRates.clear(); 2995 profile->mSamplingRates.add(0); 2996 } 2997 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 2998 profile->mFormats.clear(); 2999 profile->mFormats.add(AUDIO_FORMAT_DEFAULT); 3000 } 3001 if (profile->mChannelMasks[0] == 0) { 3002 profile->mChannelMasks.clear(); 3003 profile->mChannelMasks.add(0); 3004 } 3005 } 3006 } 3007 } 3008 } // end disconnect 3009 3010 return NO_ERROR; 3011} 3012 3013 3014void AudioPolicyManager::closeOutput(audio_io_handle_t output) 3015{ 3016 ALOGV("closeOutput(%d)", output); 3017 3018 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3019 if (outputDesc == NULL) { 3020 ALOGW("closeOutput() unknown output %d", output); 3021 return; 3022 } 3023 3024 // look for duplicated outputs connected to the output being removed. 3025 for (size_t i = 0; i < mOutputs.size(); i++) { 3026 sp<AudioOutputDescriptor> dupOutputDesc = mOutputs.valueAt(i); 3027 if (dupOutputDesc->isDuplicated() && 3028 (dupOutputDesc->mOutput1 == outputDesc || 3029 dupOutputDesc->mOutput2 == outputDesc)) { 3030 sp<AudioOutputDescriptor> outputDesc2; 3031 if (dupOutputDesc->mOutput1 == outputDesc) { 3032 outputDesc2 = dupOutputDesc->mOutput2; 3033 } else { 3034 outputDesc2 = dupOutputDesc->mOutput1; 3035 } 3036 // As all active tracks on duplicated output will be deleted, 3037 // and as they were also referenced on the other output, the reference 3038 // count for their stream type must be adjusted accordingly on 3039 // the other output. 3040 for (int j = 0; j < AUDIO_STREAM_CNT; j++) { 3041 int refCount = dupOutputDesc->mRefCount[j]; 3042 outputDesc2->changeRefCount((audio_stream_type_t)j,-refCount); 3043 } 3044 audio_io_handle_t duplicatedOutput = mOutputs.keyAt(i); 3045 ALOGV("closeOutput() closing also duplicated output %d", duplicatedOutput); 3046 3047 mpClientInterface->closeOutput(duplicatedOutput); 3048 mOutputs.removeItem(duplicatedOutput); 3049 } 3050 } 3051 3052 AudioParameter param; 3053 param.add(String8("closing"), String8("true")); 3054 mpClientInterface->setParameters(output, param.toString()); 3055 3056 mpClientInterface->closeOutput(output); 3057 mOutputs.removeItem(output); 3058 mPreviousOutputs = mOutputs; 3059 nextAudioPortGeneration(); 3060} 3061 3062SortedVector<audio_io_handle_t> AudioPolicyManager::getOutputsForDevice(audio_devices_t device, 3063 DefaultKeyedVector<audio_io_handle_t, sp<AudioOutputDescriptor> > openOutputs) 3064{ 3065 SortedVector<audio_io_handle_t> outputs; 3066 3067 ALOGVV("getOutputsForDevice() device %04x", device); 3068 for (size_t i = 0; i < openOutputs.size(); i++) { 3069 ALOGVV("output %d isDuplicated=%d device=%04x", 3070 i, openOutputs.valueAt(i)->isDuplicated(), openOutputs.valueAt(i)->supportedDevices()); 3071 if ((device & openOutputs.valueAt(i)->supportedDevices()) == device) { 3072 ALOGVV("getOutputsForDevice() found output %d", openOutputs.keyAt(i)); 3073 outputs.add(openOutputs.keyAt(i)); 3074 } 3075 } 3076 return outputs; 3077} 3078 3079bool AudioPolicyManager::vectorsEqual(SortedVector<audio_io_handle_t>& outputs1, 3080 SortedVector<audio_io_handle_t>& outputs2) 3081{ 3082 if (outputs1.size() != outputs2.size()) { 3083 return false; 3084 } 3085 for (size_t i = 0; i < outputs1.size(); i++) { 3086 if (outputs1[i] != outputs2[i]) { 3087 return false; 3088 } 3089 } 3090 return true; 3091} 3092 3093void AudioPolicyManager::checkOutputForStrategy(routing_strategy strategy) 3094{ 3095 audio_devices_t oldDevice = getDeviceForStrategy(strategy, true /*fromCache*/); 3096 audio_devices_t newDevice = getDeviceForStrategy(strategy, false /*fromCache*/); 3097 SortedVector<audio_io_handle_t> srcOutputs = getOutputsForDevice(oldDevice, mPreviousOutputs); 3098 SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(newDevice, mOutputs); 3099 3100 if (!vectorsEqual(srcOutputs,dstOutputs)) { 3101 ALOGV("checkOutputForStrategy() strategy %d, moving from output %d to output %d", 3102 strategy, srcOutputs[0], dstOutputs[0]); 3103 // mute strategy while moving tracks from one output to another 3104 for (size_t i = 0; i < srcOutputs.size(); i++) { 3105 sp<AudioOutputDescriptor> desc = mOutputs.valueFor(srcOutputs[i]); 3106 if (desc->isStrategyActive(strategy)) { 3107 setStrategyMute(strategy, true, srcOutputs[i]); 3108 setStrategyMute(strategy, false, srcOutputs[i], MUTE_TIME_MS, newDevice); 3109 } 3110 } 3111 3112 // Move effects associated to this strategy from previous output to new output 3113 if (strategy == STRATEGY_MEDIA) { 3114 audio_io_handle_t fxOutput = selectOutputForEffects(dstOutputs); 3115 SortedVector<audio_io_handle_t> moved; 3116 for (size_t i = 0; i < mEffects.size(); i++) { 3117 sp<EffectDescriptor> effectDesc = mEffects.valueAt(i); 3118 if (effectDesc->mSession == AUDIO_SESSION_OUTPUT_MIX && 3119 effectDesc->mIo != fxOutput) { 3120 if (moved.indexOf(effectDesc->mIo) < 0) { 3121 ALOGV("checkOutputForStrategy() moving effect %d to output %d", 3122 mEffects.keyAt(i), fxOutput); 3123 mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, effectDesc->mIo, 3124 fxOutput); 3125 moved.add(effectDesc->mIo); 3126 } 3127 effectDesc->mIo = fxOutput; 3128 } 3129 } 3130 } 3131 // Move tracks associated to this strategy from previous output to new output 3132 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 3133 if (getStrategy((audio_stream_type_t)i) == strategy) { 3134 mpClientInterface->invalidateStream((audio_stream_type_t)i); 3135 } 3136 } 3137 } 3138} 3139 3140void AudioPolicyManager::checkOutputForAllStrategies() 3141{ 3142 checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE); 3143 checkOutputForStrategy(STRATEGY_PHONE); 3144 checkOutputForStrategy(STRATEGY_SONIFICATION); 3145 checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL); 3146 checkOutputForStrategy(STRATEGY_MEDIA); 3147 checkOutputForStrategy(STRATEGY_DTMF); 3148} 3149 3150audio_io_handle_t AudioPolicyManager::getA2dpOutput() 3151{ 3152 for (size_t i = 0; i < mOutputs.size(); i++) { 3153 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(i); 3154 if (!outputDesc->isDuplicated() && outputDesc->device() & AUDIO_DEVICE_OUT_ALL_A2DP) { 3155 return mOutputs.keyAt(i); 3156 } 3157 } 3158 3159 return 0; 3160} 3161 3162void AudioPolicyManager::checkA2dpSuspend() 3163{ 3164 audio_io_handle_t a2dpOutput = getA2dpOutput(); 3165 if (a2dpOutput == 0) { 3166 mA2dpSuspended = false; 3167 return; 3168 } 3169 3170 bool isScoConnected = 3171 (mAvailableInputDevices.types() & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) != 0; 3172 // suspend A2DP output if: 3173 // (NOT already suspended) && 3174 // ((SCO device is connected && 3175 // (forced usage for communication || for record is SCO))) || 3176 // (phone state is ringing || in call) 3177 // 3178 // restore A2DP output if: 3179 // (Already suspended) && 3180 // ((SCO device is NOT connected || 3181 // (forced usage NOT for communication && NOT for record is SCO))) && 3182 // (phone state is NOT ringing && NOT in call) 3183 // 3184 if (mA2dpSuspended) { 3185 if ((!isScoConnected || 3186 ((mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] != AUDIO_POLICY_FORCE_BT_SCO) && 3187 (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] != AUDIO_POLICY_FORCE_BT_SCO))) && 3188 ((mPhoneState != AUDIO_MODE_IN_CALL) && 3189 (mPhoneState != AUDIO_MODE_RINGTONE))) { 3190 3191 mpClientInterface->restoreOutput(a2dpOutput); 3192 mA2dpSuspended = false; 3193 } 3194 } else { 3195 if ((isScoConnected && 3196 ((mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] == AUDIO_POLICY_FORCE_BT_SCO) || 3197 (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] == AUDIO_POLICY_FORCE_BT_SCO))) || 3198 ((mPhoneState == AUDIO_MODE_IN_CALL) || 3199 (mPhoneState == AUDIO_MODE_RINGTONE))) { 3200 3201 mpClientInterface->suspendOutput(a2dpOutput); 3202 mA2dpSuspended = true; 3203 } 3204 } 3205} 3206 3207audio_devices_t AudioPolicyManager::getNewOutputDevice(audio_io_handle_t output, bool fromCache) 3208{ 3209 audio_devices_t device = AUDIO_DEVICE_NONE; 3210 3211 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3212 3213 ssize_t index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 3214 if (index >= 0) { 3215 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3216 if (patchDesc->mUid != mUidCached) { 3217 ALOGV("getNewOutputDevice() device %08x forced by patch %d", 3218 outputDesc->device(), outputDesc->mPatchHandle); 3219 return outputDesc->device(); 3220 } 3221 } 3222 3223 // check the following by order of priority to request a routing change if necessary: 3224 // 1: the strategy enforced audible is active on the output: 3225 // use device for strategy enforced audible 3226 // 2: we are in call or the strategy phone is active on the output: 3227 // use device for strategy phone 3228 // 3: the strategy sonification is active on the output: 3229 // use device for strategy sonification 3230 // 4: the strategy "respectful" sonification is active on the output: 3231 // use device for strategy "respectful" sonification 3232 // 5: the strategy media is active on the output: 3233 // use device for strategy media 3234 // 6: the strategy DTMF is active on the output: 3235 // use device for strategy DTMF 3236 if (outputDesc->isStrategyActive(STRATEGY_ENFORCED_AUDIBLE)) { 3237 device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache); 3238 } else if (isInCall() || 3239 outputDesc->isStrategyActive(STRATEGY_PHONE)) { 3240 device = getDeviceForStrategy(STRATEGY_PHONE, fromCache); 3241 } else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION)) { 3242 device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache); 3243 } else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION_RESPECTFUL)) { 3244 device = getDeviceForStrategy(STRATEGY_SONIFICATION_RESPECTFUL, fromCache); 3245 } else if (outputDesc->isStrategyActive(STRATEGY_MEDIA)) { 3246 device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache); 3247 } else if (outputDesc->isStrategyActive(STRATEGY_DTMF)) { 3248 device = getDeviceForStrategy(STRATEGY_DTMF, fromCache); 3249 } 3250 3251 ALOGV("getNewOutputDevice() selected device %x", device); 3252 return device; 3253} 3254 3255audio_devices_t AudioPolicyManager::getNewInputDevice(audio_io_handle_t input) 3256{ 3257 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 3258 3259 ssize_t index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 3260 if (index >= 0) { 3261 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3262 if (patchDesc->mUid != mUidCached) { 3263 ALOGV("getNewInputDevice() device %08x forced by patch %d", 3264 inputDesc->mDevice, inputDesc->mPatchHandle); 3265 return inputDesc->mDevice; 3266 } 3267 } 3268 3269 audio_devices_t device = getDeviceForInputSource(inputDesc->mInputSource); 3270 3271 ALOGV("getNewInputDevice() selected device %x", device); 3272 return device; 3273} 3274 3275uint32_t AudioPolicyManager::getStrategyForStream(audio_stream_type_t stream) { 3276 return (uint32_t)getStrategy(stream); 3277} 3278 3279audio_devices_t AudioPolicyManager::getDevicesForStream(audio_stream_type_t stream) { 3280 // By checking the range of stream before calling getStrategy, we avoid 3281 // getStrategy's behavior for invalid streams. getStrategy would do a ALOGE 3282 // and then return STRATEGY_MEDIA, but we want to return the empty set. 3283 if (stream < (audio_stream_type_t) 0 || stream >= AUDIO_STREAM_CNT) { 3284 return AUDIO_DEVICE_NONE; 3285 } 3286 audio_devices_t devices; 3287 AudioPolicyManager::routing_strategy strategy = getStrategy(stream); 3288 devices = getDeviceForStrategy(strategy, true /*fromCache*/); 3289 SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(devices, mOutputs); 3290 for (size_t i = 0; i < outputs.size(); i++) { 3291 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(outputs[i]); 3292 if (outputDesc->isStrategyActive(strategy)) { 3293 devices = outputDesc->device(); 3294 break; 3295 } 3296 } 3297 return devices; 3298} 3299 3300AudioPolicyManager::routing_strategy AudioPolicyManager::getStrategy( 3301 audio_stream_type_t stream) { 3302 // stream to strategy mapping 3303 switch (stream) { 3304 case AUDIO_STREAM_VOICE_CALL: 3305 case AUDIO_STREAM_BLUETOOTH_SCO: 3306 return STRATEGY_PHONE; 3307 case AUDIO_STREAM_RING: 3308 case AUDIO_STREAM_ALARM: 3309 return STRATEGY_SONIFICATION; 3310 case AUDIO_STREAM_NOTIFICATION: 3311 return STRATEGY_SONIFICATION_RESPECTFUL; 3312 case AUDIO_STREAM_DTMF: 3313 return STRATEGY_DTMF; 3314 default: 3315 ALOGE("unknown stream type"); 3316 case AUDIO_STREAM_SYSTEM: 3317 // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs 3318 // while key clicks are played produces a poor result 3319 case AUDIO_STREAM_TTS: 3320 case AUDIO_STREAM_MUSIC: 3321 return STRATEGY_MEDIA; 3322 case AUDIO_STREAM_ENFORCED_AUDIBLE: 3323 return STRATEGY_ENFORCED_AUDIBLE; 3324 } 3325} 3326 3327uint32_t AudioPolicyManager::getStrategyForAttr(const audio_attributes_t *attr) { 3328 // flags to strategy mapping 3329 if ((attr->flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) { 3330 return (uint32_t) STRATEGY_ENFORCED_AUDIBLE; 3331 } 3332 3333 // usage to strategy mapping 3334 switch (attr->usage) { 3335 case AUDIO_USAGE_MEDIA: 3336 case AUDIO_USAGE_GAME: 3337 case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY: 3338 case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: 3339 case AUDIO_USAGE_ASSISTANCE_SONIFICATION: 3340 return (uint32_t) STRATEGY_MEDIA; 3341 3342 case AUDIO_USAGE_VOICE_COMMUNICATION: 3343 return (uint32_t) STRATEGY_PHONE; 3344 3345 case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING: 3346 return (uint32_t) STRATEGY_DTMF; 3347 3348 case AUDIO_USAGE_ALARM: 3349 case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE: 3350 return (uint32_t) STRATEGY_SONIFICATION; 3351 3352 case AUDIO_USAGE_NOTIFICATION: 3353 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST: 3354 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT: 3355 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED: 3356 case AUDIO_USAGE_NOTIFICATION_EVENT: 3357 return (uint32_t) STRATEGY_SONIFICATION_RESPECTFUL; 3358 3359 case AUDIO_USAGE_UNKNOWN: 3360 default: 3361 return (uint32_t) STRATEGY_MEDIA; 3362 } 3363} 3364 3365void AudioPolicyManager::handleNotificationRoutingForStream(audio_stream_type_t stream) { 3366 switch(stream) { 3367 case AUDIO_STREAM_MUSIC: 3368 checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL); 3369 updateDevicesAndOutputs(); 3370 break; 3371 default: 3372 break; 3373 } 3374} 3375 3376audio_devices_t AudioPolicyManager::getDeviceForStrategy(routing_strategy strategy, 3377 bool fromCache) 3378{ 3379 uint32_t device = AUDIO_DEVICE_NONE; 3380 3381 if (fromCache) { 3382 ALOGVV("getDeviceForStrategy() from cache strategy %d, device %x", 3383 strategy, mDeviceForStrategy[strategy]); 3384 return mDeviceForStrategy[strategy]; 3385 } 3386 audio_devices_t availableOutputDeviceTypes = mAvailableOutputDevices.types(); 3387 switch (strategy) { 3388 3389 case STRATEGY_SONIFICATION_RESPECTFUL: 3390 if (isInCall()) { 3391 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 3392 } else if (isStreamActiveRemotely(AUDIO_STREAM_MUSIC, 3393 SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) { 3394 // while media is playing on a remote device, use the the sonification behavior. 3395 // Note that we test this usecase before testing if media is playing because 3396 // the isStreamActive() method only informs about the activity of a stream, not 3397 // if it's for local playback. Note also that we use the same delay between both tests 3398 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 3399 } else if (isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) { 3400 // while media is playing (or has recently played), use the same device 3401 device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/); 3402 } else { 3403 // when media is not playing anymore, fall back on the sonification behavior 3404 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 3405 } 3406 3407 break; 3408 3409 case STRATEGY_DTMF: 3410 if (!isInCall()) { 3411 // when off call, DTMF strategy follows the same rules as MEDIA strategy 3412 device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/); 3413 break; 3414 } 3415 // when in call, DTMF and PHONE strategies follow the same rules 3416 // FALL THROUGH 3417 3418 case STRATEGY_PHONE: 3419 // for phone strategy, we first consider the forced use and then the available devices by order 3420 // of priority 3421 switch (mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]) { 3422 case AUDIO_POLICY_FORCE_BT_SCO: 3423 if (!isInCall() || strategy != STRATEGY_DTMF) { 3424 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT; 3425 if (device) break; 3426 } 3427 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET; 3428 if (device) break; 3429 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO; 3430 if (device) break; 3431 // if SCO device is requested but no SCO device is available, fall back to default case 3432 // FALL THROUGH 3433 3434 default: // FORCE_NONE 3435 // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP 3436 if (!isInCall() && 3437 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 3438 (getA2dpOutput() != 0) && !mA2dpSuspended) { 3439 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP; 3440 if (device) break; 3441 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; 3442 if (device) break; 3443 } 3444 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADPHONE; 3445 if (device) break; 3446 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADSET; 3447 if (device) break; 3448 if (mPhoneState != AUDIO_MODE_IN_CALL) { 3449 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 3450 if (device) break; 3451 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 3452 if (device) break; 3453 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 3454 if (device) break; 3455 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 3456 if (device) break; 3457 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 3458 if (device) break; 3459 } 3460 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_EARPIECE; 3461 if (device) break; 3462 device = mDefaultOutputDevice->mDeviceType; 3463 if (device == AUDIO_DEVICE_NONE) { 3464 ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE"); 3465 } 3466 break; 3467 3468 case AUDIO_POLICY_FORCE_SPEAKER: 3469 // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to 3470 // A2DP speaker when forcing to speaker output 3471 if (!isInCall() && 3472 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 3473 (getA2dpOutput() != 0) && !mA2dpSuspended) { 3474 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; 3475 if (device) break; 3476 } 3477 if (mPhoneState != AUDIO_MODE_IN_CALL) { 3478 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 3479 if (device) break; 3480 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 3481 if (device) break; 3482 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 3483 if (device) break; 3484 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 3485 if (device) break; 3486 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 3487 if (device) break; 3488 } 3489 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 3490 if (device) break; 3491 device = mDefaultOutputDevice->mDeviceType; 3492 if (device == AUDIO_DEVICE_NONE) { 3493 ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE, FORCE_SPEAKER"); 3494 } 3495 break; 3496 } 3497 break; 3498 3499 case STRATEGY_SONIFICATION: 3500 3501 // If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by 3502 // handleIncallSonification(). 3503 if (isInCall()) { 3504 device = getDeviceForStrategy(STRATEGY_PHONE, false /*fromCache*/); 3505 break; 3506 } 3507 // FALL THROUGH 3508 3509 case STRATEGY_ENFORCED_AUDIBLE: 3510 // strategy STRATEGY_ENFORCED_AUDIBLE uses same routing policy as STRATEGY_SONIFICATION 3511 // except: 3512 // - when in call where it doesn't default to STRATEGY_PHONE behavior 3513 // - in countries where not enforced in which case it follows STRATEGY_MEDIA 3514 3515 if ((strategy == STRATEGY_SONIFICATION) || 3516 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED)) { 3517 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 3518 if (device == AUDIO_DEVICE_NONE) { 3519 ALOGE("getDeviceForStrategy() speaker device not found for STRATEGY_SONIFICATION"); 3520 } 3521 } 3522 // The second device used for sonification is the same as the device used by media strategy 3523 // FALL THROUGH 3524 3525 case STRATEGY_MEDIA: { 3526 uint32_t device2 = AUDIO_DEVICE_NONE; 3527 if (strategy != STRATEGY_SONIFICATION) { 3528 // no sonification on remote submix (e.g. WFD) 3529 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_REMOTE_SUBMIX; 3530 } 3531 if ((device2 == AUDIO_DEVICE_NONE) && 3532 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 3533 (getA2dpOutput() != 0) && !mA2dpSuspended) { 3534 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP; 3535 if (device2 == AUDIO_DEVICE_NONE) { 3536 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; 3537 } 3538 if (device2 == AUDIO_DEVICE_NONE) { 3539 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; 3540 } 3541 } 3542 if (device2 == AUDIO_DEVICE_NONE) { 3543 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADPHONE; 3544 } 3545 if (device2 == AUDIO_DEVICE_NONE) { 3546 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADSET; 3547 } 3548 if (device2 == AUDIO_DEVICE_NONE) { 3549 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 3550 } 3551 if (device2 == AUDIO_DEVICE_NONE) { 3552 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 3553 } 3554 if (device2 == AUDIO_DEVICE_NONE) { 3555 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 3556 } 3557 if ((device2 == AUDIO_DEVICE_NONE) && (strategy != STRATEGY_SONIFICATION)) { 3558 // no sonification on aux digital (e.g. HDMI) 3559 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 3560 } 3561 if ((device2 == AUDIO_DEVICE_NONE) && 3562 (mForceUse[AUDIO_POLICY_FORCE_FOR_DOCK] == AUDIO_POLICY_FORCE_ANALOG_DOCK)) { 3563 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 3564 } 3565 if (device2 == AUDIO_DEVICE_NONE) { 3566 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 3567 } 3568 int device3 = AUDIO_DEVICE_NONE; 3569 if (strategy == STRATEGY_MEDIA) { 3570 // ARC, SPDIF and AUX_LINE can co-exist with others. 3571 device3 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_HDMI_ARC; 3572 device3 |= (availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPDIF); 3573 device3 |= (availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_LINE); 3574 } 3575 3576 device2 |= device3; 3577 // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or 3578 // STRATEGY_ENFORCED_AUDIBLE, AUDIO_DEVICE_NONE otherwise 3579 device |= device2; 3580 3581 // If hdmi system audio mode is on, remove speaker out of output list. 3582 if ((strategy == STRATEGY_MEDIA) && 3583 (mForceUse[AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO] == 3584 AUDIO_POLICY_FORCE_HDMI_SYSTEM_AUDIO_ENFORCED)) { 3585 device &= ~AUDIO_DEVICE_OUT_SPEAKER; 3586 } 3587 3588 if (device) break; 3589 device = mDefaultOutputDevice->mDeviceType; 3590 if (device == AUDIO_DEVICE_NONE) { 3591 ALOGE("getDeviceForStrategy() no device found for STRATEGY_MEDIA"); 3592 } 3593 } break; 3594 3595 default: 3596 ALOGW("getDeviceForStrategy() unknown strategy: %d", strategy); 3597 break; 3598 } 3599 3600 ALOGVV("getDeviceForStrategy() strategy %d, device %x", strategy, device); 3601 return device; 3602} 3603 3604void AudioPolicyManager::updateDevicesAndOutputs() 3605{ 3606 for (int i = 0; i < NUM_STRATEGIES; i++) { 3607 mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/); 3608 } 3609 mPreviousOutputs = mOutputs; 3610} 3611 3612uint32_t AudioPolicyManager::checkDeviceMuteStrategies(sp<AudioOutputDescriptor> outputDesc, 3613 audio_devices_t prevDevice, 3614 uint32_t delayMs) 3615{ 3616 // mute/unmute strategies using an incompatible device combination 3617 // if muting, wait for the audio in pcm buffer to be drained before proceeding 3618 // if unmuting, unmute only after the specified delay 3619 if (outputDesc->isDuplicated()) { 3620 return 0; 3621 } 3622 3623 uint32_t muteWaitMs = 0; 3624 audio_devices_t device = outputDesc->device(); 3625 bool shouldMute = outputDesc->isActive() && (popcount(device) >= 2); 3626 3627 for (size_t i = 0; i < NUM_STRATEGIES; i++) { 3628 audio_devices_t curDevice = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/); 3629 bool mute = shouldMute && (curDevice & device) && (curDevice != device); 3630 bool doMute = false; 3631 3632 if (mute && !outputDesc->mStrategyMutedByDevice[i]) { 3633 doMute = true; 3634 outputDesc->mStrategyMutedByDevice[i] = true; 3635 } else if (!mute && outputDesc->mStrategyMutedByDevice[i]){ 3636 doMute = true; 3637 outputDesc->mStrategyMutedByDevice[i] = false; 3638 } 3639 if (doMute) { 3640 for (size_t j = 0; j < mOutputs.size(); j++) { 3641 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(j); 3642 // skip output if it does not share any device with current output 3643 if ((desc->supportedDevices() & outputDesc->supportedDevices()) 3644 == AUDIO_DEVICE_NONE) { 3645 continue; 3646 } 3647 audio_io_handle_t curOutput = mOutputs.keyAt(j); 3648 ALOGVV("checkDeviceMuteStrategies() %s strategy %d (curDevice %04x) on output %d", 3649 mute ? "muting" : "unmuting", i, curDevice, curOutput); 3650 setStrategyMute((routing_strategy)i, mute, curOutput, mute ? 0 : delayMs); 3651 if (desc->isStrategyActive((routing_strategy)i)) { 3652 if (mute) { 3653 // FIXME: should not need to double latency if volume could be applied 3654 // immediately by the audioflinger mixer. We must account for the delay 3655 // between now and the next time the audioflinger thread for this output 3656 // will process a buffer (which corresponds to one buffer size, 3657 // usually 1/2 or 1/4 of the latency). 3658 if (muteWaitMs < desc->latency() * 2) { 3659 muteWaitMs = desc->latency() * 2; 3660 } 3661 } 3662 } 3663 } 3664 } 3665 } 3666 3667 // temporary mute output if device selection changes to avoid volume bursts due to 3668 // different per device volumes 3669 if (outputDesc->isActive() && (device != prevDevice)) { 3670 if (muteWaitMs < outputDesc->latency() * 2) { 3671 muteWaitMs = outputDesc->latency() * 2; 3672 } 3673 for (size_t i = 0; i < NUM_STRATEGIES; i++) { 3674 if (outputDesc->isStrategyActive((routing_strategy)i)) { 3675 setStrategyMute((routing_strategy)i, true, outputDesc->mIoHandle); 3676 // do tempMute unmute after twice the mute wait time 3677 setStrategyMute((routing_strategy)i, false, outputDesc->mIoHandle, 3678 muteWaitMs *2, device); 3679 } 3680 } 3681 } 3682 3683 // wait for the PCM output buffers to empty before proceeding with the rest of the command 3684 if (muteWaitMs > delayMs) { 3685 muteWaitMs -= delayMs; 3686 usleep(muteWaitMs * 1000); 3687 return muteWaitMs; 3688 } 3689 return 0; 3690} 3691 3692uint32_t AudioPolicyManager::setOutputDevice(audio_io_handle_t output, 3693 audio_devices_t device, 3694 bool force, 3695 int delayMs, 3696 audio_patch_handle_t *patchHandle) 3697{ 3698 ALOGV("setOutputDevice() output %d device %04x delayMs %d", output, device, delayMs); 3699 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3700 AudioParameter param; 3701 uint32_t muteWaitMs; 3702 3703 if (outputDesc->isDuplicated()) { 3704 muteWaitMs = setOutputDevice(outputDesc->mOutput1->mIoHandle, device, force, delayMs); 3705 muteWaitMs += setOutputDevice(outputDesc->mOutput2->mIoHandle, device, force, delayMs); 3706 return muteWaitMs; 3707 } 3708 // no need to proceed if new device is not AUDIO_DEVICE_NONE and not supported by current 3709 // output profile 3710 if ((device != AUDIO_DEVICE_NONE) && 3711 ((device & outputDesc->mProfile->mSupportedDevices.types()) == 0)) { 3712 return 0; 3713 } 3714 3715 // filter devices according to output selected 3716 device = (audio_devices_t)(device & outputDesc->mProfile->mSupportedDevices.types()); 3717 3718 audio_devices_t prevDevice = outputDesc->mDevice; 3719 3720 ALOGV("setOutputDevice() prevDevice %04x", prevDevice); 3721 3722 if (device != AUDIO_DEVICE_NONE) { 3723 outputDesc->mDevice = device; 3724 } 3725 muteWaitMs = checkDeviceMuteStrategies(outputDesc, prevDevice, delayMs); 3726 3727 // Do not change the routing if: 3728 // - the requested device is AUDIO_DEVICE_NONE 3729 // - the requested device is the same as current device and force is not specified. 3730 // Doing this check here allows the caller to call setOutputDevice() without conditions 3731 if ((device == AUDIO_DEVICE_NONE || device == prevDevice) && !force) { 3732 ALOGV("setOutputDevice() setting same device %04x or null device for output %d", device, output); 3733 return muteWaitMs; 3734 } 3735 3736 ALOGV("setOutputDevice() changing device"); 3737 3738 // do the routing 3739 if (device == AUDIO_DEVICE_NONE) { 3740 resetOutputDevice(output, delayMs, NULL); 3741 } else { 3742 DeviceVector deviceList = mAvailableOutputDevices.getDevicesFromType(device); 3743 if (!deviceList.isEmpty()) { 3744 struct audio_patch patch; 3745 outputDesc->toAudioPortConfig(&patch.sources[0]); 3746 patch.num_sources = 1; 3747 patch.num_sinks = 0; 3748 for (size_t i = 0; i < deviceList.size() && i < AUDIO_PATCH_PORTS_MAX; i++) { 3749 deviceList.itemAt(i)->toAudioPortConfig(&patch.sinks[i]); 3750 patch.num_sinks++; 3751 } 3752 ssize_t index; 3753 if (patchHandle && *patchHandle != AUDIO_PATCH_HANDLE_NONE) { 3754 index = mAudioPatches.indexOfKey(*patchHandle); 3755 } else { 3756 index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 3757 } 3758 sp< AudioPatch> patchDesc; 3759 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 3760 if (index >= 0) { 3761 patchDesc = mAudioPatches.valueAt(index); 3762 afPatchHandle = patchDesc->mAfPatchHandle; 3763 } 3764 3765 status_t status = mpClientInterface->createAudioPatch(&patch, 3766 &afPatchHandle, 3767 delayMs); 3768 ALOGV("setOutputDevice() createAudioPatch returned %d patchHandle %d" 3769 "num_sources %d num_sinks %d", 3770 status, afPatchHandle, patch.num_sources, patch.num_sinks); 3771 if (status == NO_ERROR) { 3772 if (index < 0) { 3773 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 3774 &patch, mUidCached); 3775 addAudioPatch(patchDesc->mHandle, patchDesc); 3776 } else { 3777 patchDesc->mPatch = patch; 3778 } 3779 patchDesc->mAfPatchHandle = afPatchHandle; 3780 patchDesc->mUid = mUidCached; 3781 if (patchHandle) { 3782 *patchHandle = patchDesc->mHandle; 3783 } 3784 outputDesc->mPatchHandle = patchDesc->mHandle; 3785 nextAudioPortGeneration(); 3786 mpClientInterface->onAudioPatchListUpdate(); 3787 } 3788 } 3789 } 3790 3791 // update stream volumes according to new device 3792 applyStreamVolumes(output, device, delayMs); 3793 3794 return muteWaitMs; 3795} 3796 3797status_t AudioPolicyManager::resetOutputDevice(audio_io_handle_t output, 3798 int delayMs, 3799 audio_patch_handle_t *patchHandle) 3800{ 3801 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3802 ssize_t index; 3803 if (patchHandle) { 3804 index = mAudioPatches.indexOfKey(*patchHandle); 3805 } else { 3806 index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 3807 } 3808 if (index < 0) { 3809 return INVALID_OPERATION; 3810 } 3811 sp< AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3812 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, delayMs); 3813 ALOGV("resetOutputDevice() releaseAudioPatch returned %d", status); 3814 outputDesc->mPatchHandle = 0; 3815 removeAudioPatch(patchDesc->mHandle); 3816 nextAudioPortGeneration(); 3817 mpClientInterface->onAudioPatchListUpdate(); 3818 return status; 3819} 3820 3821status_t AudioPolicyManager::setInputDevice(audio_io_handle_t input, 3822 audio_devices_t device, 3823 bool force, 3824 audio_patch_handle_t *patchHandle) 3825{ 3826 status_t status = NO_ERROR; 3827 3828 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 3829 if ((device != AUDIO_DEVICE_NONE) && ((device != inputDesc->mDevice) || force)) { 3830 inputDesc->mDevice = device; 3831 3832 DeviceVector deviceList = mAvailableInputDevices.getDevicesFromType(device); 3833 if (!deviceList.isEmpty()) { 3834 struct audio_patch patch; 3835 inputDesc->toAudioPortConfig(&patch.sinks[0]); 3836 patch.num_sinks = 1; 3837 //only one input device for now 3838 deviceList.itemAt(0)->toAudioPortConfig(&patch.sources[0]); 3839 patch.num_sources = 1; 3840 ssize_t index; 3841 if (patchHandle && *patchHandle != AUDIO_PATCH_HANDLE_NONE) { 3842 index = mAudioPatches.indexOfKey(*patchHandle); 3843 } else { 3844 index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 3845 } 3846 sp< AudioPatch> patchDesc; 3847 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 3848 if (index >= 0) { 3849 patchDesc = mAudioPatches.valueAt(index); 3850 afPatchHandle = patchDesc->mAfPatchHandle; 3851 } 3852 3853 status_t status = mpClientInterface->createAudioPatch(&patch, 3854 &afPatchHandle, 3855 0); 3856 ALOGV("setInputDevice() createAudioPatch returned %d patchHandle %d", 3857 status, afPatchHandle); 3858 if (status == NO_ERROR) { 3859 if (index < 0) { 3860 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 3861 &patch, mUidCached); 3862 addAudioPatch(patchDesc->mHandle, patchDesc); 3863 } else { 3864 patchDesc->mPatch = patch; 3865 } 3866 patchDesc->mAfPatchHandle = afPatchHandle; 3867 patchDesc->mUid = mUidCached; 3868 if (patchHandle) { 3869 *patchHandle = patchDesc->mHandle; 3870 } 3871 inputDesc->mPatchHandle = patchDesc->mHandle; 3872 nextAudioPortGeneration(); 3873 mpClientInterface->onAudioPatchListUpdate(); 3874 } 3875 } 3876 } 3877 return status; 3878} 3879 3880status_t AudioPolicyManager::resetInputDevice(audio_io_handle_t input, 3881 audio_patch_handle_t *patchHandle) 3882{ 3883 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 3884 ssize_t index; 3885 if (patchHandle) { 3886 index = mAudioPatches.indexOfKey(*patchHandle); 3887 } else { 3888 index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 3889 } 3890 if (index < 0) { 3891 return INVALID_OPERATION; 3892 } 3893 sp< AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3894 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 3895 ALOGV("resetInputDevice() releaseAudioPatch returned %d", status); 3896 inputDesc->mPatchHandle = 0; 3897 removeAudioPatch(patchDesc->mHandle); 3898 nextAudioPortGeneration(); 3899 mpClientInterface->onAudioPatchListUpdate(); 3900 return status; 3901} 3902 3903sp<AudioPolicyManager::IOProfile> AudioPolicyManager::getInputProfile(audio_devices_t device, 3904 uint32_t samplingRate, 3905 audio_format_t format, 3906 audio_channel_mask_t channelMask) 3907{ 3908 // Choose an input profile based on the requested capture parameters: select the first available 3909 // profile supporting all requested parameters. 3910 3911 for (size_t i = 0; i < mHwModules.size(); i++) 3912 { 3913 if (mHwModules[i]->mHandle == 0) { 3914 continue; 3915 } 3916 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) 3917 { 3918 sp<IOProfile> profile = mHwModules[i]->mInputProfiles[j]; 3919 // profile->log(); 3920 if (profile->isCompatibleProfile(device, samplingRate, format, 3921 channelMask, AUDIO_OUTPUT_FLAG_NONE)) { 3922 return profile; 3923 } 3924 } 3925 } 3926 return NULL; 3927} 3928 3929audio_devices_t AudioPolicyManager::getDeviceForInputSource(audio_source_t inputSource) 3930{ 3931 uint32_t device = AUDIO_DEVICE_NONE; 3932 audio_devices_t availableDeviceTypes = mAvailableInputDevices.types() & 3933 ~AUDIO_DEVICE_BIT_IN; 3934 switch (inputSource) { 3935 case AUDIO_SOURCE_VOICE_UPLINK: 3936 if (availableDeviceTypes & AUDIO_DEVICE_IN_VOICE_CALL) { 3937 device = AUDIO_DEVICE_IN_VOICE_CALL; 3938 break; 3939 } 3940 // FALL THROUGH 3941 3942 case AUDIO_SOURCE_DEFAULT: 3943 case AUDIO_SOURCE_MIC: 3944 if (availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) { 3945 device = AUDIO_DEVICE_IN_BLUETOOTH_A2DP; 3946 break; 3947 } 3948 // FALL THROUGH 3949 3950 case AUDIO_SOURCE_VOICE_RECOGNITION: 3951 case AUDIO_SOURCE_HOTWORD: 3952 case AUDIO_SOURCE_VOICE_COMMUNICATION: 3953 if (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] == AUDIO_POLICY_FORCE_BT_SCO && 3954 availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) { 3955 device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET; 3956 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_WIRED_HEADSET) { 3957 device = AUDIO_DEVICE_IN_WIRED_HEADSET; 3958 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_USB_DEVICE) { 3959 device = AUDIO_DEVICE_IN_USB_DEVICE; 3960 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 3961 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 3962 } 3963 break; 3964 case AUDIO_SOURCE_CAMCORDER: 3965 if (availableDeviceTypes & AUDIO_DEVICE_IN_BACK_MIC) { 3966 device = AUDIO_DEVICE_IN_BACK_MIC; 3967 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 3968 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 3969 } 3970 break; 3971 case AUDIO_SOURCE_VOICE_DOWNLINK: 3972 case AUDIO_SOURCE_VOICE_CALL: 3973 if (availableDeviceTypes & AUDIO_DEVICE_IN_VOICE_CALL) { 3974 device = AUDIO_DEVICE_IN_VOICE_CALL; 3975 } 3976 break; 3977 case AUDIO_SOURCE_REMOTE_SUBMIX: 3978 if (availableDeviceTypes & AUDIO_DEVICE_IN_REMOTE_SUBMIX) { 3979 device = AUDIO_DEVICE_IN_REMOTE_SUBMIX; 3980 } 3981 break; 3982 default: 3983 ALOGW("getDeviceForInputSource() invalid input source %d", inputSource); 3984 break; 3985 } 3986 ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device); 3987 return device; 3988} 3989 3990bool AudioPolicyManager::isVirtualInputDevice(audio_devices_t device) 3991{ 3992 if ((device & AUDIO_DEVICE_BIT_IN) != 0) { 3993 device &= ~AUDIO_DEVICE_BIT_IN; 3994 if ((popcount(device) == 1) && ((device & ~APM_AUDIO_IN_DEVICE_VIRTUAL_ALL) == 0)) 3995 return true; 3996 } 3997 return false; 3998} 3999 4000audio_io_handle_t AudioPolicyManager::getActiveInput(bool ignoreVirtualInputs) 4001{ 4002 for (size_t i = 0; i < mInputs.size(); i++) { 4003 const sp<AudioInputDescriptor> input_descriptor = mInputs.valueAt(i); 4004 if ((input_descriptor->mRefCount > 0) 4005 && (!ignoreVirtualInputs || !isVirtualInputDevice(input_descriptor->mDevice))) { 4006 return mInputs.keyAt(i); 4007 } 4008 } 4009 return 0; 4010} 4011 4012 4013audio_devices_t AudioPolicyManager::getDeviceForVolume(audio_devices_t device) 4014{ 4015 if (device == AUDIO_DEVICE_NONE) { 4016 // this happens when forcing a route update and no track is active on an output. 4017 // In this case the returned category is not important. 4018 device = AUDIO_DEVICE_OUT_SPEAKER; 4019 } else if (popcount(device) > 1) { 4020 // Multiple device selection is either: 4021 // - speaker + one other device: give priority to speaker in this case. 4022 // - one A2DP device + another device: happens with duplicated output. In this case 4023 // retain the device on the A2DP output as the other must not correspond to an active 4024 // selection if not the speaker. 4025 if (device & AUDIO_DEVICE_OUT_SPEAKER) { 4026 device = AUDIO_DEVICE_OUT_SPEAKER; 4027 } else { 4028 device = (audio_devices_t)(device & AUDIO_DEVICE_OUT_ALL_A2DP); 4029 } 4030 } 4031 4032 ALOGW_IF(popcount(device) != 1, 4033 "getDeviceForVolume() invalid device combination: %08x", 4034 device); 4035 4036 return device; 4037} 4038 4039AudioPolicyManager::device_category AudioPolicyManager::getDeviceCategory(audio_devices_t device) 4040{ 4041 switch(getDeviceForVolume(device)) { 4042 case AUDIO_DEVICE_OUT_EARPIECE: 4043 return DEVICE_CATEGORY_EARPIECE; 4044 case AUDIO_DEVICE_OUT_WIRED_HEADSET: 4045 case AUDIO_DEVICE_OUT_WIRED_HEADPHONE: 4046 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO: 4047 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET: 4048 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP: 4049 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES: 4050 return DEVICE_CATEGORY_HEADSET; 4051 case AUDIO_DEVICE_OUT_SPEAKER: 4052 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT: 4053 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER: 4054 case AUDIO_DEVICE_OUT_AUX_DIGITAL: 4055 case AUDIO_DEVICE_OUT_USB_ACCESSORY: 4056 case AUDIO_DEVICE_OUT_USB_DEVICE: 4057 case AUDIO_DEVICE_OUT_REMOTE_SUBMIX: 4058 default: 4059 return DEVICE_CATEGORY_SPEAKER; 4060 } 4061} 4062 4063float AudioPolicyManager::volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc, 4064 int indexInUi) 4065{ 4066 device_category deviceCategory = getDeviceCategory(device); 4067 const VolumeCurvePoint *curve = streamDesc.mVolumeCurve[deviceCategory]; 4068 4069 // the volume index in the UI is relative to the min and max volume indices for this stream type 4070 int nbSteps = 1 + curve[VOLMAX].mIndex - 4071 curve[VOLMIN].mIndex; 4072 int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) / 4073 (streamDesc.mIndexMax - streamDesc.mIndexMin); 4074 4075 // find what part of the curve this index volume belongs to, or if it's out of bounds 4076 int segment = 0; 4077 if (volIdx < curve[VOLMIN].mIndex) { // out of bounds 4078 return 0.0f; 4079 } else if (volIdx < curve[VOLKNEE1].mIndex) { 4080 segment = 0; 4081 } else if (volIdx < curve[VOLKNEE2].mIndex) { 4082 segment = 1; 4083 } else if (volIdx <= curve[VOLMAX].mIndex) { 4084 segment = 2; 4085 } else { // out of bounds 4086 return 1.0f; 4087 } 4088 4089 // linear interpolation in the attenuation table in dB 4090 float decibels = curve[segment].mDBAttenuation + 4091 ((float)(volIdx - curve[segment].mIndex)) * 4092 ( (curve[segment+1].mDBAttenuation - 4093 curve[segment].mDBAttenuation) / 4094 ((float)(curve[segment+1].mIndex - 4095 curve[segment].mIndex)) ); 4096 4097 float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 ) 4098 4099 ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f", 4100 curve[segment].mIndex, volIdx, 4101 curve[segment+1].mIndex, 4102 curve[segment].mDBAttenuation, 4103 decibels, 4104 curve[segment+1].mDBAttenuation, 4105 amplification); 4106 4107 return amplification; 4108} 4109 4110const AudioPolicyManager::VolumeCurvePoint 4111 AudioPolicyManager::sDefaultVolumeCurve[AudioPolicyManager::VOLCNT] = { 4112 {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f} 4113}; 4114 4115const AudioPolicyManager::VolumeCurvePoint 4116 AudioPolicyManager::sDefaultMediaVolumeCurve[AudioPolicyManager::VOLCNT] = { 4117 {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f} 4118}; 4119 4120const AudioPolicyManager::VolumeCurvePoint 4121 AudioPolicyManager::sSpeakerMediaVolumeCurve[AudioPolicyManager::VOLCNT] = { 4122 {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f} 4123}; 4124 4125const AudioPolicyManager::VolumeCurvePoint 4126 AudioPolicyManager::sSpeakerMediaVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4127 {1, -55.0f}, {20, -43.0f}, {86, -12.0f}, {100, 0.0f} 4128}; 4129 4130const AudioPolicyManager::VolumeCurvePoint 4131 AudioPolicyManager::sSpeakerSonificationVolumeCurve[AudioPolicyManager::VOLCNT] = { 4132 {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f} 4133}; 4134 4135const AudioPolicyManager::VolumeCurvePoint 4136 AudioPolicyManager::sSpeakerSonificationVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4137 {1, -35.7f}, {33, -26.1f}, {66, -13.2f}, {100, 0.0f} 4138}; 4139 4140// AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks 4141// AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets. 4142// AUDIO_STREAM_DTMF tracks AUDIO_STREAM_VOICE_CALL while in call (See AudioService.java). 4143// The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset. 4144 4145const AudioPolicyManager::VolumeCurvePoint 4146 AudioPolicyManager::sDefaultSystemVolumeCurve[AudioPolicyManager::VOLCNT] = { 4147 {1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f} 4148}; 4149 4150const AudioPolicyManager::VolumeCurvePoint 4151 AudioPolicyManager::sDefaultSystemVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4152 {1, -34.0f}, {33, -24.0f}, {66, -15.0f}, {100, -6.0f} 4153}; 4154 4155const AudioPolicyManager::VolumeCurvePoint 4156 AudioPolicyManager::sHeadsetSystemVolumeCurve[AudioPolicyManager::VOLCNT] = { 4157 {1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f} 4158}; 4159 4160const AudioPolicyManager::VolumeCurvePoint 4161 AudioPolicyManager::sDefaultVoiceVolumeCurve[AudioPolicyManager::VOLCNT] = { 4162 {0, -42.0f}, {33, -28.0f}, {66, -14.0f}, {100, 0.0f} 4163}; 4164 4165const AudioPolicyManager::VolumeCurvePoint 4166 AudioPolicyManager::sSpeakerVoiceVolumeCurve[AudioPolicyManager::VOLCNT] = { 4167 {0, -24.0f}, {33, -16.0f}, {66, -8.0f}, {100, 0.0f} 4168}; 4169 4170const AudioPolicyManager::VolumeCurvePoint 4171 *AudioPolicyManager::sVolumeProfiles[AUDIO_STREAM_CNT] 4172 [AudioPolicyManager::DEVICE_CATEGORY_CNT] = { 4173 { // AUDIO_STREAM_VOICE_CALL 4174 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET 4175 sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4176 sDefaultVoiceVolumeCurve // DEVICE_CATEGORY_EARPIECE 4177 }, 4178 { // AUDIO_STREAM_SYSTEM 4179 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4180 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4181 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE 4182 }, 4183 { // AUDIO_STREAM_RING 4184 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4185 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4186 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE 4187 }, 4188 { // AUDIO_STREAM_MUSIC 4189 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET 4190 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4191 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE 4192 }, 4193 { // AUDIO_STREAM_ALARM 4194 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4195 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4196 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE 4197 }, 4198 { // AUDIO_STREAM_NOTIFICATION 4199 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4200 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4201 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE 4202 }, 4203 { // AUDIO_STREAM_BLUETOOTH_SCO 4204 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET 4205 sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4206 sDefaultVoiceVolumeCurve // DEVICE_CATEGORY_EARPIECE 4207 }, 4208 { // AUDIO_STREAM_ENFORCED_AUDIBLE 4209 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4210 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4211 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE 4212 }, 4213 { // AUDIO_STREAM_DTMF 4214 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4215 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4216 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE 4217 }, 4218 { // AUDIO_STREAM_TTS 4219 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET 4220 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4221 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE 4222 }, 4223}; 4224 4225void AudioPolicyManager::initializeVolumeCurves() 4226{ 4227 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 4228 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { 4229 mStreams[i].mVolumeCurve[j] = 4230 sVolumeProfiles[i][j]; 4231 } 4232 } 4233 4234 // Check availability of DRC on speaker path: if available, override some of the speaker curves 4235 if (mSpeakerDrcEnabled) { 4236 mStreams[AUDIO_STREAM_SYSTEM].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4237 sDefaultSystemVolumeCurveDrc; 4238 mStreams[AUDIO_STREAM_RING].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4239 sSpeakerSonificationVolumeCurveDrc; 4240 mStreams[AUDIO_STREAM_ALARM].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4241 sSpeakerSonificationVolumeCurveDrc; 4242 mStreams[AUDIO_STREAM_NOTIFICATION].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4243 sSpeakerSonificationVolumeCurveDrc; 4244 mStreams[AUDIO_STREAM_MUSIC].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4245 sSpeakerMediaVolumeCurveDrc; 4246 } 4247} 4248 4249float AudioPolicyManager::computeVolume(audio_stream_type_t stream, 4250 int index, 4251 audio_io_handle_t output, 4252 audio_devices_t device) 4253{ 4254 float volume = 1.0; 4255 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 4256 StreamDescriptor &streamDesc = mStreams[stream]; 4257 4258 if (device == AUDIO_DEVICE_NONE) { 4259 device = outputDesc->device(); 4260 } 4261 4262 // if volume is not 0 (not muted), force media volume to max on digital output 4263 if (stream == AUDIO_STREAM_MUSIC && 4264 index != mStreams[stream].mIndexMin && 4265 (device == AUDIO_DEVICE_OUT_AUX_DIGITAL || 4266 device == AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET)) { 4267 return 1.0; 4268 } 4269 4270 volume = volIndexToAmpl(device, streamDesc, index); 4271 4272 // if a headset is connected, apply the following rules to ring tones and notifications 4273 // to avoid sound level bursts in user's ears: 4274 // - always attenuate ring tones and notifications volume by 6dB 4275 // - if music is playing, always limit the volume to current music volume, 4276 // with a minimum threshold at -36dB so that notification is always perceived. 4277 const routing_strategy stream_strategy = getStrategy(stream); 4278 if ((device & (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP | 4279 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | 4280 AUDIO_DEVICE_OUT_WIRED_HEADSET | 4281 AUDIO_DEVICE_OUT_WIRED_HEADPHONE)) && 4282 ((stream_strategy == STRATEGY_SONIFICATION) 4283 || (stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL) 4284 || (stream == AUDIO_STREAM_SYSTEM) 4285 || ((stream_strategy == STRATEGY_ENFORCED_AUDIBLE) && 4286 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_NONE))) && 4287 streamDesc.mCanBeMuted) { 4288 volume *= SONIFICATION_HEADSET_VOLUME_FACTOR; 4289 // when the phone is ringing we must consider that music could have been paused just before 4290 // by the music application and behave as if music was active if the last music track was 4291 // just stopped 4292 if (isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY) || 4293 mLimitRingtoneVolume) { 4294 audio_devices_t musicDevice = getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/); 4295 float musicVol = computeVolume(AUDIO_STREAM_MUSIC, 4296 mStreams[AUDIO_STREAM_MUSIC].getVolumeIndex(musicDevice), 4297 output, 4298 musicDevice); 4299 float minVol = (musicVol > SONIFICATION_HEADSET_VOLUME_MIN) ? 4300 musicVol : SONIFICATION_HEADSET_VOLUME_MIN; 4301 if (volume > minVol) { 4302 volume = minVol; 4303 ALOGV("computeVolume limiting volume to %f musicVol %f", minVol, musicVol); 4304 } 4305 } 4306 } 4307 4308 return volume; 4309} 4310 4311status_t AudioPolicyManager::checkAndSetVolume(audio_stream_type_t stream, 4312 int index, 4313 audio_io_handle_t output, 4314 audio_devices_t device, 4315 int delayMs, 4316 bool force) 4317{ 4318 4319 // do not change actual stream volume if the stream is muted 4320 if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) { 4321 ALOGVV("checkAndSetVolume() stream %d muted count %d", 4322 stream, mOutputs.valueFor(output)->mMuteCount[stream]); 4323 return NO_ERROR; 4324 } 4325 4326 // do not change in call volume if bluetooth is connected and vice versa 4327 if ((stream == AUDIO_STREAM_VOICE_CALL && 4328 mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] == AUDIO_POLICY_FORCE_BT_SCO) || 4329 (stream == AUDIO_STREAM_BLUETOOTH_SCO && 4330 mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] != AUDIO_POLICY_FORCE_BT_SCO)) { 4331 ALOGV("checkAndSetVolume() cannot set stream %d volume with force use = %d for comm", 4332 stream, mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]); 4333 return INVALID_OPERATION; 4334 } 4335 4336 float volume = computeVolume(stream, index, output, device); 4337 // We actually change the volume if: 4338 // - the float value returned by computeVolume() changed 4339 // - the force flag is set 4340 if (volume != mOutputs.valueFor(output)->mCurVolume[stream] || 4341 force) { 4342 mOutputs.valueFor(output)->mCurVolume[stream] = volume; 4343 ALOGVV("checkAndSetVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs); 4344 // Force VOICE_CALL to track BLUETOOTH_SCO stream volume when bluetooth audio is 4345 // enabled 4346 if (stream == AUDIO_STREAM_BLUETOOTH_SCO) { 4347 mpClientInterface->setStreamVolume(AUDIO_STREAM_VOICE_CALL, volume, output, delayMs); 4348 } 4349 mpClientInterface->setStreamVolume(stream, volume, output, delayMs); 4350 } 4351 4352 if (stream == AUDIO_STREAM_VOICE_CALL || 4353 stream == AUDIO_STREAM_BLUETOOTH_SCO) { 4354 float voiceVolume; 4355 // Force voice volume to max for bluetooth SCO as volume is managed by the headset 4356 if (stream == AUDIO_STREAM_VOICE_CALL) { 4357 voiceVolume = (float)index/(float)mStreams[stream].mIndexMax; 4358 } else { 4359 voiceVolume = 1.0; 4360 } 4361 4362 if (voiceVolume != mLastVoiceVolume && output == mPrimaryOutput) { 4363 mpClientInterface->setVoiceVolume(voiceVolume, delayMs); 4364 mLastVoiceVolume = voiceVolume; 4365 } 4366 } 4367 4368 return NO_ERROR; 4369} 4370 4371void AudioPolicyManager::applyStreamVolumes(audio_io_handle_t output, 4372 audio_devices_t device, 4373 int delayMs, 4374 bool force) 4375{ 4376 ALOGVV("applyStreamVolumes() for output %d and device %x", output, device); 4377 4378 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 4379 checkAndSetVolume((audio_stream_type_t)stream, 4380 mStreams[stream].getVolumeIndex(device), 4381 output, 4382 device, 4383 delayMs, 4384 force); 4385 } 4386} 4387 4388void AudioPolicyManager::setStrategyMute(routing_strategy strategy, 4389 bool on, 4390 audio_io_handle_t output, 4391 int delayMs, 4392 audio_devices_t device) 4393{ 4394 ALOGVV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output); 4395 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 4396 if (getStrategy((audio_stream_type_t)stream) == strategy) { 4397 setStreamMute((audio_stream_type_t)stream, on, output, delayMs, device); 4398 } 4399 } 4400} 4401 4402void AudioPolicyManager::setStreamMute(audio_stream_type_t stream, 4403 bool on, 4404 audio_io_handle_t output, 4405 int delayMs, 4406 audio_devices_t device) 4407{ 4408 StreamDescriptor &streamDesc = mStreams[stream]; 4409 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 4410 if (device == AUDIO_DEVICE_NONE) { 4411 device = outputDesc->device(); 4412 } 4413 4414 ALOGVV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d device %04x", 4415 stream, on, output, outputDesc->mMuteCount[stream], device); 4416 4417 if (on) { 4418 if (outputDesc->mMuteCount[stream] == 0) { 4419 if (streamDesc.mCanBeMuted && 4420 ((stream != AUDIO_STREAM_ENFORCED_AUDIBLE) || 4421 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_NONE))) { 4422 checkAndSetVolume(stream, 0, output, device, delayMs); 4423 } 4424 } 4425 // increment mMuteCount after calling checkAndSetVolume() so that volume change is not ignored 4426 outputDesc->mMuteCount[stream]++; 4427 } else { 4428 if (outputDesc->mMuteCount[stream] == 0) { 4429 ALOGV("setStreamMute() unmuting non muted stream!"); 4430 return; 4431 } 4432 if (--outputDesc->mMuteCount[stream] == 0) { 4433 checkAndSetVolume(stream, 4434 streamDesc.getVolumeIndex(device), 4435 output, 4436 device, 4437 delayMs); 4438 } 4439 } 4440} 4441 4442void AudioPolicyManager::handleIncallSonification(audio_stream_type_t stream, 4443 bool starting, bool stateChange) 4444{ 4445 // if the stream pertains to sonification strategy and we are in call we must 4446 // mute the stream if it is low visibility. If it is high visibility, we must play a tone 4447 // in the device used for phone strategy and play the tone if the selected device does not 4448 // interfere with the device used for phone strategy 4449 // if stateChange is true, we are called from setPhoneState() and we must mute or unmute as 4450 // many times as there are active tracks on the output 4451 const routing_strategy stream_strategy = getStrategy(stream); 4452 if ((stream_strategy == STRATEGY_SONIFICATION) || 4453 ((stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL))) { 4454 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(mPrimaryOutput); 4455 ALOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d", 4456 stream, starting, outputDesc->mDevice, stateChange); 4457 if (outputDesc->mRefCount[stream]) { 4458 int muteCount = 1; 4459 if (stateChange) { 4460 muteCount = outputDesc->mRefCount[stream]; 4461 } 4462 if (audio_is_low_visibility(stream)) { 4463 ALOGV("handleIncallSonification() low visibility, muteCount %d", muteCount); 4464 for (int i = 0; i < muteCount; i++) { 4465 setStreamMute(stream, starting, mPrimaryOutput); 4466 } 4467 } else { 4468 ALOGV("handleIncallSonification() high visibility"); 4469 if (outputDesc->device() & 4470 getDeviceForStrategy(STRATEGY_PHONE, true /*fromCache*/)) { 4471 ALOGV("handleIncallSonification() high visibility muted, muteCount %d", muteCount); 4472 for (int i = 0; i < muteCount; i++) { 4473 setStreamMute(stream, starting, mPrimaryOutput); 4474 } 4475 } 4476 if (starting) { 4477 mpClientInterface->startTone(AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION, 4478 AUDIO_STREAM_VOICE_CALL); 4479 } else { 4480 mpClientInterface->stopTone(); 4481 } 4482 } 4483 } 4484 } 4485} 4486 4487bool AudioPolicyManager::isInCall() 4488{ 4489 return isStateInCall(mPhoneState); 4490} 4491 4492bool AudioPolicyManager::isStateInCall(int state) { 4493 return ((state == AUDIO_MODE_IN_CALL) || 4494 (state == AUDIO_MODE_IN_COMMUNICATION)); 4495} 4496 4497uint32_t AudioPolicyManager::getMaxEffectsCpuLoad() 4498{ 4499 return MAX_EFFECTS_CPU_LOAD; 4500} 4501 4502uint32_t AudioPolicyManager::getMaxEffectsMemory() 4503{ 4504 return MAX_EFFECTS_MEMORY; 4505} 4506 4507 4508// --- AudioOutputDescriptor class implementation 4509 4510AudioPolicyManager::AudioOutputDescriptor::AudioOutputDescriptor( 4511 const sp<IOProfile>& profile) 4512 : mId(0), mIoHandle(0), mLatency(0), 4513 mFlags((audio_output_flags_t)0), mDevice(AUDIO_DEVICE_NONE), mPatchHandle(0), 4514 mOutput1(0), mOutput2(0), mProfile(profile), mDirectOpenCount(0) 4515{ 4516 // clear usage count for all stream types 4517 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 4518 mRefCount[i] = 0; 4519 mCurVolume[i] = -1.0; 4520 mMuteCount[i] = 0; 4521 mStopTime[i] = 0; 4522 } 4523 for (int i = 0; i < NUM_STRATEGIES; i++) { 4524 mStrategyMutedByDevice[i] = false; 4525 } 4526 if (profile != NULL) { 4527 mAudioPort = profile; 4528 mSamplingRate = profile->pickSamplingRate(); 4529 mFormat = profile->pickFormat(); 4530 mChannelMask = profile->pickChannelMask(); 4531 if (profile->mGains.size() > 0) { 4532 profile->mGains[0]->getDefaultConfig(&mGain); 4533 } 4534 mFlags = profile->mFlags; 4535 } 4536} 4537 4538audio_devices_t AudioPolicyManager::AudioOutputDescriptor::device() const 4539{ 4540 if (isDuplicated()) { 4541 return (audio_devices_t)(mOutput1->mDevice | mOutput2->mDevice); 4542 } else { 4543 return mDevice; 4544 } 4545} 4546 4547uint32_t AudioPolicyManager::AudioOutputDescriptor::latency() 4548{ 4549 if (isDuplicated()) { 4550 return (mOutput1->mLatency > mOutput2->mLatency) ? mOutput1->mLatency : mOutput2->mLatency; 4551 } else { 4552 return mLatency; 4553 } 4554} 4555 4556bool AudioPolicyManager::AudioOutputDescriptor::sharesHwModuleWith( 4557 const sp<AudioOutputDescriptor> outputDesc) 4558{ 4559 if (isDuplicated()) { 4560 return mOutput1->sharesHwModuleWith(outputDesc) || mOutput2->sharesHwModuleWith(outputDesc); 4561 } else if (outputDesc->isDuplicated()){ 4562 return sharesHwModuleWith(outputDesc->mOutput1) || sharesHwModuleWith(outputDesc->mOutput2); 4563 } else { 4564 return (mProfile->mModule == outputDesc->mProfile->mModule); 4565 } 4566} 4567 4568void AudioPolicyManager::AudioOutputDescriptor::changeRefCount(audio_stream_type_t stream, 4569 int delta) 4570{ 4571 // forward usage count change to attached outputs 4572 if (isDuplicated()) { 4573 mOutput1->changeRefCount(stream, delta); 4574 mOutput2->changeRefCount(stream, delta); 4575 } 4576 if ((delta + (int)mRefCount[stream]) < 0) { 4577 ALOGW("changeRefCount() invalid delta %d for stream %d, refCount %d", 4578 delta, stream, mRefCount[stream]); 4579 mRefCount[stream] = 0; 4580 return; 4581 } 4582 mRefCount[stream] += delta; 4583 ALOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]); 4584} 4585 4586audio_devices_t AudioPolicyManager::AudioOutputDescriptor::supportedDevices() 4587{ 4588 if (isDuplicated()) { 4589 return (audio_devices_t)(mOutput1->supportedDevices() | mOutput2->supportedDevices()); 4590 } else { 4591 return mProfile->mSupportedDevices.types() ; 4592 } 4593} 4594 4595bool AudioPolicyManager::AudioOutputDescriptor::isActive(uint32_t inPastMs) const 4596{ 4597 return isStrategyActive(NUM_STRATEGIES, inPastMs); 4598} 4599 4600bool AudioPolicyManager::AudioOutputDescriptor::isStrategyActive(routing_strategy strategy, 4601 uint32_t inPastMs, 4602 nsecs_t sysTime) const 4603{ 4604 if ((sysTime == 0) && (inPastMs != 0)) { 4605 sysTime = systemTime(); 4606 } 4607 for (int i = 0; i < (int)AUDIO_STREAM_CNT; i++) { 4608 if (((getStrategy((audio_stream_type_t)i) == strategy) || 4609 (NUM_STRATEGIES == strategy)) && 4610 isStreamActive((audio_stream_type_t)i, inPastMs, sysTime)) { 4611 return true; 4612 } 4613 } 4614 return false; 4615} 4616 4617bool AudioPolicyManager::AudioOutputDescriptor::isStreamActive(audio_stream_type_t stream, 4618 uint32_t inPastMs, 4619 nsecs_t sysTime) const 4620{ 4621 if (mRefCount[stream] != 0) { 4622 return true; 4623 } 4624 if (inPastMs == 0) { 4625 return false; 4626 } 4627 if (sysTime == 0) { 4628 sysTime = systemTime(); 4629 } 4630 if (ns2ms(sysTime - mStopTime[stream]) < inPastMs) { 4631 return true; 4632 } 4633 return false; 4634} 4635 4636void AudioPolicyManager::AudioOutputDescriptor::toAudioPortConfig( 4637 struct audio_port_config *dstConfig, 4638 const struct audio_port_config *srcConfig) const 4639{ 4640 ALOG_ASSERT(!isDuplicated(), "toAudioPortConfig() called on duplicated output %d", mIoHandle); 4641 4642 dstConfig->config_mask = AUDIO_PORT_CONFIG_SAMPLE_RATE|AUDIO_PORT_CONFIG_CHANNEL_MASK| 4643 AUDIO_PORT_CONFIG_FORMAT|AUDIO_PORT_CONFIG_GAIN; 4644 if (srcConfig != NULL) { 4645 dstConfig->config_mask |= srcConfig->config_mask; 4646 } 4647 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 4648 4649 dstConfig->id = mId; 4650 dstConfig->role = AUDIO_PORT_ROLE_SOURCE; 4651 dstConfig->type = AUDIO_PORT_TYPE_MIX; 4652 dstConfig->ext.mix.hw_module = mProfile->mModule->mHandle; 4653 dstConfig->ext.mix.handle = mIoHandle; 4654 dstConfig->ext.mix.usecase.stream = AUDIO_STREAM_DEFAULT; 4655} 4656 4657void AudioPolicyManager::AudioOutputDescriptor::toAudioPort( 4658 struct audio_port *port) const 4659{ 4660 ALOG_ASSERT(!isDuplicated(), "toAudioPort() called on duplicated output %d", mIoHandle); 4661 mProfile->toAudioPort(port); 4662 port->id = mId; 4663 toAudioPortConfig(&port->active_config); 4664 port->ext.mix.hw_module = mProfile->mModule->mHandle; 4665 port->ext.mix.handle = mIoHandle; 4666 port->ext.mix.latency_class = 4667 mFlags & AUDIO_OUTPUT_FLAG_FAST ? AUDIO_LATENCY_LOW : AUDIO_LATENCY_NORMAL; 4668} 4669 4670status_t AudioPolicyManager::AudioOutputDescriptor::dump(int fd) 4671{ 4672 const size_t SIZE = 256; 4673 char buffer[SIZE]; 4674 String8 result; 4675 4676 snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); 4677 result.append(buffer); 4678 snprintf(buffer, SIZE, " Format: %08x\n", mFormat); 4679 result.append(buffer); 4680 snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask); 4681 result.append(buffer); 4682 snprintf(buffer, SIZE, " Latency: %d\n", mLatency); 4683 result.append(buffer); 4684 snprintf(buffer, SIZE, " Flags %08x\n", mFlags); 4685 result.append(buffer); 4686 snprintf(buffer, SIZE, " Devices %08x\n", device()); 4687 result.append(buffer); 4688 snprintf(buffer, SIZE, " Stream volume refCount muteCount\n"); 4689 result.append(buffer); 4690 for (int i = 0; i < (int)AUDIO_STREAM_CNT; i++) { 4691 snprintf(buffer, SIZE, " %02d %.03f %02d %02d\n", 4692 i, mCurVolume[i], mRefCount[i], mMuteCount[i]); 4693 result.append(buffer); 4694 } 4695 write(fd, result.string(), result.size()); 4696 4697 return NO_ERROR; 4698} 4699 4700// --- AudioInputDescriptor class implementation 4701 4702AudioPolicyManager::AudioInputDescriptor::AudioInputDescriptor(const sp<IOProfile>& profile) 4703 : mId(0), mIoHandle(0), 4704 mDevice(AUDIO_DEVICE_NONE), mPatchHandle(0), mRefCount(0), 4705 mInputSource(AUDIO_SOURCE_DEFAULT), mProfile(profile) 4706{ 4707 if (profile != NULL) { 4708 mAudioPort = profile; 4709 mSamplingRate = profile->pickSamplingRate(); 4710 mFormat = profile->pickFormat(); 4711 mChannelMask = profile->pickChannelMask(); 4712 if (profile->mGains.size() > 0) { 4713 profile->mGains[0]->getDefaultConfig(&mGain); 4714 } 4715 } 4716} 4717 4718void AudioPolicyManager::AudioInputDescriptor::toAudioPortConfig( 4719 struct audio_port_config *dstConfig, 4720 const struct audio_port_config *srcConfig) const 4721{ 4722 ALOG_ASSERT(mProfile != 0, 4723 "toAudioPortConfig() called on input with null profile %d", mIoHandle); 4724 dstConfig->config_mask = AUDIO_PORT_CONFIG_SAMPLE_RATE|AUDIO_PORT_CONFIG_CHANNEL_MASK| 4725 AUDIO_PORT_CONFIG_FORMAT|AUDIO_PORT_CONFIG_GAIN; 4726 if (srcConfig != NULL) { 4727 dstConfig->config_mask |= srcConfig->config_mask; 4728 } 4729 4730 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 4731 4732 dstConfig->id = mId; 4733 dstConfig->role = AUDIO_PORT_ROLE_SINK; 4734 dstConfig->type = AUDIO_PORT_TYPE_MIX; 4735 dstConfig->ext.mix.hw_module = mProfile->mModule->mHandle; 4736 dstConfig->ext.mix.handle = mIoHandle; 4737 dstConfig->ext.mix.usecase.source = mInputSource; 4738} 4739 4740void AudioPolicyManager::AudioInputDescriptor::toAudioPort( 4741 struct audio_port *port) const 4742{ 4743 ALOG_ASSERT(mProfile != 0, "toAudioPort() called on input with null profile %d", mIoHandle); 4744 4745 mProfile->toAudioPort(port); 4746 port->id = mId; 4747 toAudioPortConfig(&port->active_config); 4748 port->ext.mix.hw_module = mProfile->mModule->mHandle; 4749 port->ext.mix.handle = mIoHandle; 4750 port->ext.mix.latency_class = AUDIO_LATENCY_NORMAL; 4751} 4752 4753status_t AudioPolicyManager::AudioInputDescriptor::dump(int fd) 4754{ 4755 const size_t SIZE = 256; 4756 char buffer[SIZE]; 4757 String8 result; 4758 4759 snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); 4760 result.append(buffer); 4761 snprintf(buffer, SIZE, " Format: %d\n", mFormat); 4762 result.append(buffer); 4763 snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask); 4764 result.append(buffer); 4765 snprintf(buffer, SIZE, " Devices %08x\n", mDevice); 4766 result.append(buffer); 4767 snprintf(buffer, SIZE, " Ref Count %d\n", mRefCount); 4768 result.append(buffer); 4769 write(fd, result.string(), result.size()); 4770 4771 return NO_ERROR; 4772} 4773 4774// --- StreamDescriptor class implementation 4775 4776AudioPolicyManager::StreamDescriptor::StreamDescriptor() 4777 : mIndexMin(0), mIndexMax(1), mCanBeMuted(true) 4778{ 4779 mIndexCur.add(AUDIO_DEVICE_OUT_DEFAULT, 0); 4780} 4781 4782int AudioPolicyManager::StreamDescriptor::getVolumeIndex(audio_devices_t device) 4783{ 4784 device = AudioPolicyManager::getDeviceForVolume(device); 4785 // there is always a valid entry for AUDIO_DEVICE_OUT_DEFAULT 4786 if (mIndexCur.indexOfKey(device) < 0) { 4787 device = AUDIO_DEVICE_OUT_DEFAULT; 4788 } 4789 return mIndexCur.valueFor(device); 4790} 4791 4792void AudioPolicyManager::StreamDescriptor::dump(int fd) 4793{ 4794 const size_t SIZE = 256; 4795 char buffer[SIZE]; 4796 String8 result; 4797 4798 snprintf(buffer, SIZE, "%s %02d %02d ", 4799 mCanBeMuted ? "true " : "false", mIndexMin, mIndexMax); 4800 result.append(buffer); 4801 for (size_t i = 0; i < mIndexCur.size(); i++) { 4802 snprintf(buffer, SIZE, "%04x : %02d, ", 4803 mIndexCur.keyAt(i), 4804 mIndexCur.valueAt(i)); 4805 result.append(buffer); 4806 } 4807 result.append("\n"); 4808 4809 write(fd, result.string(), result.size()); 4810} 4811 4812// --- EffectDescriptor class implementation 4813 4814status_t AudioPolicyManager::EffectDescriptor::dump(int fd) 4815{ 4816 const size_t SIZE = 256; 4817 char buffer[SIZE]; 4818 String8 result; 4819 4820 snprintf(buffer, SIZE, " I/O: %d\n", mIo); 4821 result.append(buffer); 4822 snprintf(buffer, SIZE, " Strategy: %d\n", mStrategy); 4823 result.append(buffer); 4824 snprintf(buffer, SIZE, " Session: %d\n", mSession); 4825 result.append(buffer); 4826 snprintf(buffer, SIZE, " Name: %s\n", mDesc.name); 4827 result.append(buffer); 4828 snprintf(buffer, SIZE, " %s\n", mEnabled ? "Enabled" : "Disabled"); 4829 result.append(buffer); 4830 write(fd, result.string(), result.size()); 4831 4832 return NO_ERROR; 4833} 4834 4835// --- HwModule class implementation 4836 4837AudioPolicyManager::HwModule::HwModule(const char *name) 4838 : mName(strndup(name, AUDIO_HARDWARE_MODULE_ID_MAX_LEN)), 4839 mHalVersion(AUDIO_DEVICE_API_VERSION_MIN), mHandle(0) 4840{ 4841} 4842 4843AudioPolicyManager::HwModule::~HwModule() 4844{ 4845 for (size_t i = 0; i < mOutputProfiles.size(); i++) { 4846 mOutputProfiles[i]->mSupportedDevices.clear(); 4847 } 4848 for (size_t i = 0; i < mInputProfiles.size(); i++) { 4849 mInputProfiles[i]->mSupportedDevices.clear(); 4850 } 4851 free((void *)mName); 4852} 4853 4854status_t AudioPolicyManager::HwModule::loadInput(cnode *root) 4855{ 4856 cnode *node = root->first_child; 4857 4858 sp<IOProfile> profile = new IOProfile(String8(root->name), AUDIO_PORT_ROLE_SINK, this); 4859 4860 while (node) { 4861 if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) { 4862 profile->loadSamplingRates((char *)node->value); 4863 } else if (strcmp(node->name, FORMATS_TAG) == 0) { 4864 profile->loadFormats((char *)node->value); 4865 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 4866 profile->loadInChannels((char *)node->value); 4867 } else if (strcmp(node->name, DEVICES_TAG) == 0) { 4868 profile->mSupportedDevices.loadDevicesFromName((char *)node->value, 4869 mDeclaredDevices); 4870 } else if (strcmp(node->name, GAINS_TAG) == 0) { 4871 profile->loadGains(node); 4872 } 4873 node = node->next; 4874 } 4875 ALOGW_IF(profile->mSupportedDevices.isEmpty(), 4876 "loadInput() invalid supported devices"); 4877 ALOGW_IF(profile->mChannelMasks.size() == 0, 4878 "loadInput() invalid supported channel masks"); 4879 ALOGW_IF(profile->mSamplingRates.size() == 0, 4880 "loadInput() invalid supported sampling rates"); 4881 ALOGW_IF(profile->mFormats.size() == 0, 4882 "loadInput() invalid supported formats"); 4883 if (!profile->mSupportedDevices.isEmpty() && 4884 (profile->mChannelMasks.size() != 0) && 4885 (profile->mSamplingRates.size() != 0) && 4886 (profile->mFormats.size() != 0)) { 4887 4888 ALOGV("loadInput() adding input Supported Devices %04x", 4889 profile->mSupportedDevices.types()); 4890 4891 mInputProfiles.add(profile); 4892 return NO_ERROR; 4893 } else { 4894 return BAD_VALUE; 4895 } 4896} 4897 4898status_t AudioPolicyManager::HwModule::loadOutput(cnode *root) 4899{ 4900 cnode *node = root->first_child; 4901 4902 sp<IOProfile> profile = new IOProfile(String8(root->name), AUDIO_PORT_ROLE_SOURCE, this); 4903 4904 while (node) { 4905 if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) { 4906 profile->loadSamplingRates((char *)node->value); 4907 } else if (strcmp(node->name, FORMATS_TAG) == 0) { 4908 profile->loadFormats((char *)node->value); 4909 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 4910 profile->loadOutChannels((char *)node->value); 4911 } else if (strcmp(node->name, DEVICES_TAG) == 0) { 4912 profile->mSupportedDevices.loadDevicesFromName((char *)node->value, 4913 mDeclaredDevices); 4914 } else if (strcmp(node->name, FLAGS_TAG) == 0) { 4915 profile->mFlags = parseFlagNames((char *)node->value); 4916 } else if (strcmp(node->name, GAINS_TAG) == 0) { 4917 profile->loadGains(node); 4918 } 4919 node = node->next; 4920 } 4921 ALOGW_IF(profile->mSupportedDevices.isEmpty(), 4922 "loadOutput() invalid supported devices"); 4923 ALOGW_IF(profile->mChannelMasks.size() == 0, 4924 "loadOutput() invalid supported channel masks"); 4925 ALOGW_IF(profile->mSamplingRates.size() == 0, 4926 "loadOutput() invalid supported sampling rates"); 4927 ALOGW_IF(profile->mFormats.size() == 0, 4928 "loadOutput() invalid supported formats"); 4929 if (!profile->mSupportedDevices.isEmpty() && 4930 (profile->mChannelMasks.size() != 0) && 4931 (profile->mSamplingRates.size() != 0) && 4932 (profile->mFormats.size() != 0)) { 4933 4934 ALOGV("loadOutput() adding output Supported Devices %04x, mFlags %04x", 4935 profile->mSupportedDevices.types(), profile->mFlags); 4936 4937 mOutputProfiles.add(profile); 4938 return NO_ERROR; 4939 } else { 4940 return BAD_VALUE; 4941 } 4942} 4943 4944status_t AudioPolicyManager::HwModule::loadDevice(cnode *root) 4945{ 4946 cnode *node = root->first_child; 4947 4948 audio_devices_t type = AUDIO_DEVICE_NONE; 4949 while (node) { 4950 if (strcmp(node->name, DEVICE_TYPE) == 0) { 4951 type = parseDeviceNames((char *)node->value); 4952 break; 4953 } 4954 node = node->next; 4955 } 4956 if (type == AUDIO_DEVICE_NONE || 4957 (!audio_is_input_device(type) && !audio_is_output_device(type))) { 4958 ALOGW("loadDevice() bad type %08x", type); 4959 return BAD_VALUE; 4960 } 4961 sp<DeviceDescriptor> deviceDesc = new DeviceDescriptor(String8(root->name), type); 4962 deviceDesc->mModule = this; 4963 4964 node = root->first_child; 4965 while (node) { 4966 if (strcmp(node->name, DEVICE_ADDRESS) == 0) { 4967 deviceDesc->mAddress = String8((char *)node->value); 4968 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 4969 if (audio_is_input_device(type)) { 4970 deviceDesc->loadInChannels((char *)node->value); 4971 } else { 4972 deviceDesc->loadOutChannels((char *)node->value); 4973 } 4974 } else if (strcmp(node->name, GAINS_TAG) == 0) { 4975 deviceDesc->loadGains(node); 4976 } 4977 node = node->next; 4978 } 4979 4980 ALOGV("loadDevice() adding device name %s type %08x address %s", 4981 deviceDesc->mName.string(), type, deviceDesc->mAddress.string()); 4982 4983 mDeclaredDevices.add(deviceDesc); 4984 4985 return NO_ERROR; 4986} 4987 4988void AudioPolicyManager::HwModule::dump(int fd) 4989{ 4990 const size_t SIZE = 256; 4991 char buffer[SIZE]; 4992 String8 result; 4993 4994 snprintf(buffer, SIZE, " - name: %s\n", mName); 4995 result.append(buffer); 4996 snprintf(buffer, SIZE, " - handle: %d\n", mHandle); 4997 result.append(buffer); 4998 snprintf(buffer, SIZE, " - version: %u.%u\n", mHalVersion >> 8, mHalVersion & 0xFF); 4999 result.append(buffer); 5000 write(fd, result.string(), result.size()); 5001 if (mOutputProfiles.size()) { 5002 write(fd, " - outputs:\n", strlen(" - outputs:\n")); 5003 for (size_t i = 0; i < mOutputProfiles.size(); i++) { 5004 snprintf(buffer, SIZE, " output %zu:\n", i); 5005 write(fd, buffer, strlen(buffer)); 5006 mOutputProfiles[i]->dump(fd); 5007 } 5008 } 5009 if (mInputProfiles.size()) { 5010 write(fd, " - inputs:\n", strlen(" - inputs:\n")); 5011 for (size_t i = 0; i < mInputProfiles.size(); i++) { 5012 snprintf(buffer, SIZE, " input %zu:\n", i); 5013 write(fd, buffer, strlen(buffer)); 5014 mInputProfiles[i]->dump(fd); 5015 } 5016 } 5017 if (mDeclaredDevices.size()) { 5018 write(fd, " - devices:\n", strlen(" - devices:\n")); 5019 for (size_t i = 0; i < mDeclaredDevices.size(); i++) { 5020 mDeclaredDevices[i]->dump(fd, 4, i); 5021 } 5022 } 5023} 5024 5025// --- AudioPort class implementation 5026 5027 5028AudioPolicyManager::AudioPort::AudioPort(const String8& name, audio_port_type_t type, 5029 audio_port_role_t role, const sp<HwModule>& module) : 5030 mName(name), mType(type), mRole(role), mModule(module), mFlags((audio_output_flags_t)0) 5031{ 5032 mUseInChannelMask = ((type == AUDIO_PORT_TYPE_DEVICE) && (role == AUDIO_PORT_ROLE_SOURCE)) || 5033 ((type == AUDIO_PORT_TYPE_MIX) && (role == AUDIO_PORT_ROLE_SINK)); 5034} 5035 5036void AudioPolicyManager::AudioPort::toAudioPort(struct audio_port *port) const 5037{ 5038 port->role = mRole; 5039 port->type = mType; 5040 unsigned int i; 5041 for (i = 0; i < mSamplingRates.size() && i < AUDIO_PORT_MAX_SAMPLING_RATES; i++) { 5042 port->sample_rates[i] = mSamplingRates[i]; 5043 } 5044 port->num_sample_rates = i; 5045 for (i = 0; i < mChannelMasks.size() && i < AUDIO_PORT_MAX_CHANNEL_MASKS; i++) { 5046 port->channel_masks[i] = mChannelMasks[i]; 5047 } 5048 port->num_channel_masks = i; 5049 for (i = 0; i < mFormats.size() && i < AUDIO_PORT_MAX_FORMATS; i++) { 5050 port->formats[i] = mFormats[i]; 5051 } 5052 port->num_formats = i; 5053 5054 ALOGV("AudioPort::toAudioPort() num gains %zu", mGains.size()); 5055 5056 for (i = 0; i < mGains.size() && i < AUDIO_PORT_MAX_GAINS; i++) { 5057 port->gains[i] = mGains[i]->mGain; 5058 } 5059 port->num_gains = i; 5060} 5061 5062 5063void AudioPolicyManager::AudioPort::loadSamplingRates(char *name) 5064{ 5065 char *str = strtok(name, "|"); 5066 5067 // by convention, "0' in the first entry in mSamplingRates indicates the supported sampling 5068 // rates should be read from the output stream after it is opened for the first time 5069 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5070 mSamplingRates.add(0); 5071 return; 5072 } 5073 5074 while (str != NULL) { 5075 uint32_t rate = atoi(str); 5076 if (rate != 0) { 5077 ALOGV("loadSamplingRates() adding rate %d", rate); 5078 mSamplingRates.add(rate); 5079 } 5080 str = strtok(NULL, "|"); 5081 } 5082} 5083 5084void AudioPolicyManager::AudioPort::loadFormats(char *name) 5085{ 5086 char *str = strtok(name, "|"); 5087 5088 // by convention, "0' in the first entry in mFormats indicates the supported formats 5089 // should be read from the output stream after it is opened for the first time 5090 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5091 mFormats.add(AUDIO_FORMAT_DEFAULT); 5092 return; 5093 } 5094 5095 while (str != NULL) { 5096 audio_format_t format = (audio_format_t)stringToEnum(sFormatNameToEnumTable, 5097 ARRAY_SIZE(sFormatNameToEnumTable), 5098 str); 5099 if (format != AUDIO_FORMAT_DEFAULT) { 5100 mFormats.add(format); 5101 } 5102 str = strtok(NULL, "|"); 5103 } 5104} 5105 5106void AudioPolicyManager::AudioPort::loadInChannels(char *name) 5107{ 5108 const char *str = strtok(name, "|"); 5109 5110 ALOGV("loadInChannels() %s", name); 5111 5112 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5113 mChannelMasks.add(0); 5114 return; 5115 } 5116 5117 while (str != NULL) { 5118 audio_channel_mask_t channelMask = 5119 (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable, 5120 ARRAY_SIZE(sInChannelsNameToEnumTable), 5121 str); 5122 if (channelMask != 0) { 5123 ALOGV("loadInChannels() adding channelMask %04x", channelMask); 5124 mChannelMasks.add(channelMask); 5125 } 5126 str = strtok(NULL, "|"); 5127 } 5128} 5129 5130void AudioPolicyManager::AudioPort::loadOutChannels(char *name) 5131{ 5132 const char *str = strtok(name, "|"); 5133 5134 ALOGV("loadOutChannels() %s", name); 5135 5136 // by convention, "0' in the first entry in mChannelMasks indicates the supported channel 5137 // masks should be read from the output stream after it is opened for the first time 5138 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5139 mChannelMasks.add(0); 5140 return; 5141 } 5142 5143 while (str != NULL) { 5144 audio_channel_mask_t channelMask = 5145 (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable, 5146 ARRAY_SIZE(sOutChannelsNameToEnumTable), 5147 str); 5148 if (channelMask != 0) { 5149 mChannelMasks.add(channelMask); 5150 } 5151 str = strtok(NULL, "|"); 5152 } 5153 return; 5154} 5155 5156audio_gain_mode_t AudioPolicyManager::AudioPort::loadGainMode(char *name) 5157{ 5158 const char *str = strtok(name, "|"); 5159 5160 ALOGV("loadGainMode() %s", name); 5161 audio_gain_mode_t mode = 0; 5162 while (str != NULL) { 5163 mode |= (audio_gain_mode_t)stringToEnum(sGainModeNameToEnumTable, 5164 ARRAY_SIZE(sGainModeNameToEnumTable), 5165 str); 5166 str = strtok(NULL, "|"); 5167 } 5168 return mode; 5169} 5170 5171void AudioPolicyManager::AudioPort::loadGain(cnode *root, int index) 5172{ 5173 cnode *node = root->first_child; 5174 5175 sp<AudioGain> gain = new AudioGain(index, mUseInChannelMask); 5176 5177 while (node) { 5178 if (strcmp(node->name, GAIN_MODE) == 0) { 5179 gain->mGain.mode = loadGainMode((char *)node->value); 5180 } else if (strcmp(node->name, GAIN_CHANNELS) == 0) { 5181 if (mUseInChannelMask) { 5182 gain->mGain.channel_mask = 5183 (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable, 5184 ARRAY_SIZE(sInChannelsNameToEnumTable), 5185 (char *)node->value); 5186 } else { 5187 gain->mGain.channel_mask = 5188 (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable, 5189 ARRAY_SIZE(sOutChannelsNameToEnumTable), 5190 (char *)node->value); 5191 } 5192 } else if (strcmp(node->name, GAIN_MIN_VALUE) == 0) { 5193 gain->mGain.min_value = atoi((char *)node->value); 5194 } else if (strcmp(node->name, GAIN_MAX_VALUE) == 0) { 5195 gain->mGain.max_value = atoi((char *)node->value); 5196 } else if (strcmp(node->name, GAIN_DEFAULT_VALUE) == 0) { 5197 gain->mGain.default_value = atoi((char *)node->value); 5198 } else if (strcmp(node->name, GAIN_STEP_VALUE) == 0) { 5199 gain->mGain.step_value = atoi((char *)node->value); 5200 } else if (strcmp(node->name, GAIN_MIN_RAMP_MS) == 0) { 5201 gain->mGain.min_ramp_ms = atoi((char *)node->value); 5202 } else if (strcmp(node->name, GAIN_MAX_RAMP_MS) == 0) { 5203 gain->mGain.max_ramp_ms = atoi((char *)node->value); 5204 } 5205 node = node->next; 5206 } 5207 5208 ALOGV("loadGain() adding new gain mode %08x channel mask %08x min mB %d max mB %d", 5209 gain->mGain.mode, gain->mGain.channel_mask, gain->mGain.min_value, gain->mGain.max_value); 5210 5211 if (gain->mGain.mode == 0) { 5212 return; 5213 } 5214 mGains.add(gain); 5215} 5216 5217void AudioPolicyManager::AudioPort::loadGains(cnode *root) 5218{ 5219 cnode *node = root->first_child; 5220 int index = 0; 5221 while (node) { 5222 ALOGV("loadGains() loading gain %s", node->name); 5223 loadGain(node, index++); 5224 node = node->next; 5225 } 5226} 5227 5228status_t AudioPolicyManager::AudioPort::checkSamplingRate(uint32_t samplingRate) const 5229{ 5230 for (size_t i = 0; i < mSamplingRates.size(); i ++) { 5231 if (mSamplingRates[i] == samplingRate) { 5232 return NO_ERROR; 5233 } 5234 } 5235 return BAD_VALUE; 5236} 5237 5238status_t AudioPolicyManager::AudioPort::checkChannelMask(audio_channel_mask_t channelMask) const 5239{ 5240 for (size_t i = 0; i < mChannelMasks.size(); i ++) { 5241 if (mChannelMasks[i] == channelMask) { 5242 return NO_ERROR; 5243 } 5244 } 5245 return BAD_VALUE; 5246} 5247 5248status_t AudioPolicyManager::AudioPort::checkFormat(audio_format_t format) const 5249{ 5250 for (size_t i = 0; i < mFormats.size(); i ++) { 5251 if (mFormats[i] == format) { 5252 return NO_ERROR; 5253 } 5254 } 5255 return BAD_VALUE; 5256} 5257 5258 5259uint32_t AudioPolicyManager::AudioPort::pickSamplingRate() const 5260{ 5261 // special case for uninitialized dynamic profile 5262 if (mSamplingRates.size() == 1 && mSamplingRates[0] == 0) { 5263 return 0; 5264 } 5265 5266 uint32_t samplingRate = 0; 5267 uint32_t maxRate = MAX_MIXER_SAMPLING_RATE; 5268 5269 // For mixed output and inputs, use max mixer sampling rates. Do not 5270 // limit sampling rate otherwise 5271 if ((mType != AUDIO_PORT_TYPE_MIX) || 5272 ((mRole == AUDIO_PORT_ROLE_SOURCE) && 5273 (mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)))) { 5274 maxRate = UINT_MAX; 5275 } 5276 for (size_t i = 0; i < mSamplingRates.size(); i ++) { 5277 if ((mSamplingRates[i] > samplingRate) && (mSamplingRates[i] <= maxRate)) { 5278 samplingRate = mSamplingRates[i]; 5279 } 5280 } 5281 return samplingRate; 5282} 5283 5284audio_channel_mask_t AudioPolicyManager::AudioPort::pickChannelMask() const 5285{ 5286 // special case for uninitialized dynamic profile 5287 if (mChannelMasks.size() == 1 && mChannelMasks[0] == 0) { 5288 return AUDIO_CHANNEL_NONE; 5289 } 5290 5291 audio_channel_mask_t channelMask = AUDIO_CHANNEL_NONE; 5292 uint32_t channelCount = 0; 5293 uint32_t maxCount = MAX_MIXER_CHANNEL_COUNT; 5294 5295 // For mixed output and inputs, use max mixer channel count. Do not 5296 // limit channel count otherwise 5297 if ((mType != AUDIO_PORT_TYPE_MIX) || 5298 ((mRole == AUDIO_PORT_ROLE_SOURCE) && 5299 (mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)))) { 5300 maxCount = UINT_MAX; 5301 } 5302 for (size_t i = 0; i < mChannelMasks.size(); i ++) { 5303 uint32_t cnlCount; 5304 if (mUseInChannelMask) { 5305 cnlCount = audio_channel_count_from_in_mask(mChannelMasks[i]); 5306 } else { 5307 cnlCount = audio_channel_count_from_out_mask(mChannelMasks[i]); 5308 } 5309 if ((cnlCount > channelCount) && (cnlCount <= maxCount)) { 5310 channelMask = mChannelMasks[i]; 5311 } 5312 } 5313 return channelMask; 5314} 5315 5316const audio_format_t AudioPolicyManager::AudioPort::sPcmFormatCompareTable[] = { 5317 AUDIO_FORMAT_DEFAULT, 5318 AUDIO_FORMAT_PCM_16_BIT, 5319 AUDIO_FORMAT_PCM_8_24_BIT, 5320 AUDIO_FORMAT_PCM_24_BIT_PACKED, 5321 AUDIO_FORMAT_PCM_32_BIT, 5322}; 5323 5324int AudioPolicyManager::AudioPort::compareFormats(audio_format_t format1, 5325 audio_format_t format2) 5326{ 5327 // NOTE: AUDIO_FORMAT_INVALID is also considered not PCM and will be compared equal to any 5328 // compressed format and better than any PCM format. This is by design of pickFormat() 5329 if (!audio_is_linear_pcm(format1)) { 5330 if (!audio_is_linear_pcm(format2)) { 5331 return 0; 5332 } 5333 return 1; 5334 } 5335 if (!audio_is_linear_pcm(format2)) { 5336 return -1; 5337 } 5338 5339 int index1 = -1, index2 = -1; 5340 for (size_t i = 0; 5341 (i < ARRAY_SIZE(sPcmFormatCompareTable)) && ((index1 == -1) || (index2 == -1)); 5342 i ++) { 5343 if (sPcmFormatCompareTable[i] == format1) { 5344 index1 = i; 5345 } 5346 if (sPcmFormatCompareTable[i] == format2) { 5347 index2 = i; 5348 } 5349 } 5350 // format1 not found => index1 < 0 => format2 > format1 5351 // format2 not found => index2 < 0 => format2 < format1 5352 return index1 - index2; 5353} 5354 5355audio_format_t AudioPolicyManager::AudioPort::pickFormat() const 5356{ 5357 // special case for uninitialized dynamic profile 5358 if (mFormats.size() == 1 && mFormats[0] == 0) { 5359 return AUDIO_FORMAT_DEFAULT; 5360 } 5361 5362 audio_format_t format = AUDIO_FORMAT_DEFAULT; 5363 audio_format_t bestFormat = BEST_MIXER_FORMAT; 5364 // For mixed output and inputs, use best mixer output format. Do not 5365 // limit format otherwise 5366 if ((mType != AUDIO_PORT_TYPE_MIX) || 5367 ((mRole == AUDIO_PORT_ROLE_SOURCE) && 5368 (((mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)) == 0)))) { 5369 bestFormat = AUDIO_FORMAT_INVALID; 5370 } 5371 5372 for (size_t i = 0; i < mFormats.size(); i ++) { 5373 if ((compareFormats(mFormats[i], format) > 0) && 5374 (compareFormats(mFormats[i], bestFormat) <= 0)) { 5375 format = mFormats[i]; 5376 } 5377 } 5378 return format; 5379} 5380 5381status_t AudioPolicyManager::AudioPort::checkGain(const struct audio_gain_config *gainConfig, 5382 int index) const 5383{ 5384 if (index < 0 || (size_t)index >= mGains.size()) { 5385 return BAD_VALUE; 5386 } 5387 return mGains[index]->checkConfig(gainConfig); 5388} 5389 5390void AudioPolicyManager::AudioPort::dump(int fd, int spaces) const 5391{ 5392 const size_t SIZE = 256; 5393 char buffer[SIZE]; 5394 String8 result; 5395 5396 if (mName.size() != 0) { 5397 snprintf(buffer, SIZE, "%*s- name: %s\n", spaces, "", mName.string()); 5398 result.append(buffer); 5399 } 5400 5401 if (mSamplingRates.size() != 0) { 5402 snprintf(buffer, SIZE, "%*s- sampling rates: ", spaces, ""); 5403 result.append(buffer); 5404 for (size_t i = 0; i < mSamplingRates.size(); i++) { 5405 if (i == 0 && mSamplingRates[i] == 0) { 5406 snprintf(buffer, SIZE, "Dynamic"); 5407 } else { 5408 snprintf(buffer, SIZE, "%d", mSamplingRates[i]); 5409 } 5410 result.append(buffer); 5411 result.append(i == (mSamplingRates.size() - 1) ? "" : ", "); 5412 } 5413 result.append("\n"); 5414 } 5415 5416 if (mChannelMasks.size() != 0) { 5417 snprintf(buffer, SIZE, "%*s- channel masks: ", spaces, ""); 5418 result.append(buffer); 5419 for (size_t i = 0; i < mChannelMasks.size(); i++) { 5420 ALOGV("AudioPort::dump mChannelMasks %zu %08x", i, mChannelMasks[i]); 5421 5422 if (i == 0 && mChannelMasks[i] == 0) { 5423 snprintf(buffer, SIZE, "Dynamic"); 5424 } else { 5425 snprintf(buffer, SIZE, "0x%04x", mChannelMasks[i]); 5426 } 5427 result.append(buffer); 5428 result.append(i == (mChannelMasks.size() - 1) ? "" : ", "); 5429 } 5430 result.append("\n"); 5431 } 5432 5433 if (mFormats.size() != 0) { 5434 snprintf(buffer, SIZE, "%*s- formats: ", spaces, ""); 5435 result.append(buffer); 5436 for (size_t i = 0; i < mFormats.size(); i++) { 5437 const char *formatStr = enumToString(sFormatNameToEnumTable, 5438 ARRAY_SIZE(sFormatNameToEnumTable), 5439 mFormats[i]); 5440 if (i == 0 && strcmp(formatStr, "") == 0) { 5441 snprintf(buffer, SIZE, "Dynamic"); 5442 } else { 5443 snprintf(buffer, SIZE, "%-48s", formatStr); 5444 } 5445 result.append(buffer); 5446 result.append(i == (mFormats.size() - 1) ? "" : ", "); 5447 } 5448 result.append("\n"); 5449 } 5450 write(fd, result.string(), result.size()); 5451 if (mGains.size() != 0) { 5452 snprintf(buffer, SIZE, "%*s- gains:\n", spaces, ""); 5453 write(fd, buffer, strlen(buffer) + 1); 5454 result.append(buffer); 5455 for (size_t i = 0; i < mGains.size(); i++) { 5456 mGains[i]->dump(fd, spaces + 2, i); 5457 } 5458 } 5459} 5460 5461// --- AudioGain class implementation 5462 5463AudioPolicyManager::AudioGain::AudioGain(int index, bool useInChannelMask) 5464{ 5465 mIndex = index; 5466 mUseInChannelMask = useInChannelMask; 5467 memset(&mGain, 0, sizeof(struct audio_gain)); 5468} 5469 5470void AudioPolicyManager::AudioGain::getDefaultConfig(struct audio_gain_config *config) 5471{ 5472 config->index = mIndex; 5473 config->mode = mGain.mode; 5474 config->channel_mask = mGain.channel_mask; 5475 if ((mGain.mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 5476 config->values[0] = mGain.default_value; 5477 } else { 5478 uint32_t numValues; 5479 if (mUseInChannelMask) { 5480 numValues = audio_channel_count_from_in_mask(mGain.channel_mask); 5481 } else { 5482 numValues = audio_channel_count_from_out_mask(mGain.channel_mask); 5483 } 5484 for (size_t i = 0; i < numValues; i++) { 5485 config->values[i] = mGain.default_value; 5486 } 5487 } 5488 if ((mGain.mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 5489 config->ramp_duration_ms = mGain.min_ramp_ms; 5490 } 5491} 5492 5493status_t AudioPolicyManager::AudioGain::checkConfig(const struct audio_gain_config *config) 5494{ 5495 if ((config->mode & ~mGain.mode) != 0) { 5496 return BAD_VALUE; 5497 } 5498 if ((config->mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 5499 if ((config->values[0] < mGain.min_value) || 5500 (config->values[0] > mGain.max_value)) { 5501 return BAD_VALUE; 5502 } 5503 } else { 5504 if ((config->channel_mask & ~mGain.channel_mask) != 0) { 5505 return BAD_VALUE; 5506 } 5507 uint32_t numValues; 5508 if (mUseInChannelMask) { 5509 numValues = audio_channel_count_from_in_mask(config->channel_mask); 5510 } else { 5511 numValues = audio_channel_count_from_out_mask(config->channel_mask); 5512 } 5513 for (size_t i = 0; i < numValues; i++) { 5514 if ((config->values[i] < mGain.min_value) || 5515 (config->values[i] > mGain.max_value)) { 5516 return BAD_VALUE; 5517 } 5518 } 5519 } 5520 if ((config->mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 5521 if ((config->ramp_duration_ms < mGain.min_ramp_ms) || 5522 (config->ramp_duration_ms > mGain.max_ramp_ms)) { 5523 return BAD_VALUE; 5524 } 5525 } 5526 return NO_ERROR; 5527} 5528 5529void AudioPolicyManager::AudioGain::dump(int fd, int spaces, int index) const 5530{ 5531 const size_t SIZE = 256; 5532 char buffer[SIZE]; 5533 String8 result; 5534 5535 snprintf(buffer, SIZE, "%*sGain %d:\n", spaces, "", index+1); 5536 result.append(buffer); 5537 snprintf(buffer, SIZE, "%*s- mode: %08x\n", spaces, "", mGain.mode); 5538 result.append(buffer); 5539 snprintf(buffer, SIZE, "%*s- channel_mask: %08x\n", spaces, "", mGain.channel_mask); 5540 result.append(buffer); 5541 snprintf(buffer, SIZE, "%*s- min_value: %d mB\n", spaces, "", mGain.min_value); 5542 result.append(buffer); 5543 snprintf(buffer, SIZE, "%*s- max_value: %d mB\n", spaces, "", mGain.max_value); 5544 result.append(buffer); 5545 snprintf(buffer, SIZE, "%*s- default_value: %d mB\n", spaces, "", mGain.default_value); 5546 result.append(buffer); 5547 snprintf(buffer, SIZE, "%*s- step_value: %d mB\n", spaces, "", mGain.step_value); 5548 result.append(buffer); 5549 snprintf(buffer, SIZE, "%*s- min_ramp_ms: %d ms\n", spaces, "", mGain.min_ramp_ms); 5550 result.append(buffer); 5551 snprintf(buffer, SIZE, "%*s- max_ramp_ms: %d ms\n", spaces, "", mGain.max_ramp_ms); 5552 result.append(buffer); 5553 5554 write(fd, result.string(), result.size()); 5555} 5556 5557// --- AudioPortConfig class implementation 5558 5559AudioPolicyManager::AudioPortConfig::AudioPortConfig() 5560{ 5561 mSamplingRate = 0; 5562 mChannelMask = AUDIO_CHANNEL_NONE; 5563 mFormat = AUDIO_FORMAT_INVALID; 5564 mGain.index = -1; 5565} 5566 5567status_t AudioPolicyManager::AudioPortConfig::applyAudioPortConfig( 5568 const struct audio_port_config *config, 5569 struct audio_port_config *backupConfig) 5570{ 5571 struct audio_port_config localBackupConfig; 5572 status_t status = NO_ERROR; 5573 5574 localBackupConfig.config_mask = config->config_mask; 5575 toAudioPortConfig(&localBackupConfig); 5576 5577 if (mAudioPort == 0) { 5578 status = NO_INIT; 5579 goto exit; 5580 } 5581 if (config->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE) { 5582 status = mAudioPort->checkSamplingRate(config->sample_rate); 5583 if (status != NO_ERROR) { 5584 goto exit; 5585 } 5586 mSamplingRate = config->sample_rate; 5587 } 5588 if (config->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) { 5589 status = mAudioPort->checkChannelMask(config->channel_mask); 5590 if (status != NO_ERROR) { 5591 goto exit; 5592 } 5593 mChannelMask = config->channel_mask; 5594 } 5595 if (config->config_mask & AUDIO_PORT_CONFIG_FORMAT) { 5596 status = mAudioPort->checkFormat(config->format); 5597 if (status != NO_ERROR) { 5598 goto exit; 5599 } 5600 mFormat = config->format; 5601 } 5602 if (config->config_mask & AUDIO_PORT_CONFIG_GAIN) { 5603 status = mAudioPort->checkGain(&config->gain, config->gain.index); 5604 if (status != NO_ERROR) { 5605 goto exit; 5606 } 5607 mGain = config->gain; 5608 } 5609 5610exit: 5611 if (status != NO_ERROR) { 5612 applyAudioPortConfig(&localBackupConfig); 5613 } 5614 if (backupConfig != NULL) { 5615 *backupConfig = localBackupConfig; 5616 } 5617 return status; 5618} 5619 5620void AudioPolicyManager::AudioPortConfig::toAudioPortConfig( 5621 struct audio_port_config *dstConfig, 5622 const struct audio_port_config *srcConfig) const 5623{ 5624 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE) { 5625 dstConfig->sample_rate = mSamplingRate; 5626 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE)) { 5627 dstConfig->sample_rate = srcConfig->sample_rate; 5628 } 5629 } else { 5630 dstConfig->sample_rate = 0; 5631 } 5632 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) { 5633 dstConfig->channel_mask = mChannelMask; 5634 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK)) { 5635 dstConfig->channel_mask = srcConfig->channel_mask; 5636 } 5637 } else { 5638 dstConfig->channel_mask = AUDIO_CHANNEL_NONE; 5639 } 5640 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_FORMAT) { 5641 dstConfig->format = mFormat; 5642 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_FORMAT)) { 5643 dstConfig->format = srcConfig->format; 5644 } 5645 } else { 5646 dstConfig->format = AUDIO_FORMAT_INVALID; 5647 } 5648 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_GAIN) { 5649 dstConfig->gain = mGain; 5650 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_GAIN)) { 5651 dstConfig->gain = srcConfig->gain; 5652 } 5653 } else { 5654 dstConfig->gain.index = -1; 5655 } 5656 if (dstConfig->gain.index != -1) { 5657 dstConfig->config_mask |= AUDIO_PORT_CONFIG_GAIN; 5658 } else { 5659 dstConfig->config_mask &= ~AUDIO_PORT_CONFIG_GAIN; 5660 } 5661} 5662 5663// --- IOProfile class implementation 5664 5665AudioPolicyManager::IOProfile::IOProfile(const String8& name, audio_port_role_t role, 5666 const sp<HwModule>& module) 5667 : AudioPort(name, AUDIO_PORT_TYPE_MIX, role, module) 5668{ 5669} 5670 5671AudioPolicyManager::IOProfile::~IOProfile() 5672{ 5673} 5674 5675// checks if the IO profile is compatible with specified parameters. 5676// Sampling rate, format and channel mask must be specified in order to 5677// get a valid a match 5678bool AudioPolicyManager::IOProfile::isCompatibleProfile(audio_devices_t device, 5679 uint32_t samplingRate, 5680 audio_format_t format, 5681 audio_channel_mask_t channelMask, 5682 audio_output_flags_t flags) const 5683{ 5684 if (samplingRate == 0 || !audio_is_valid_format(format) || channelMask == 0) { 5685 return false; 5686 } 5687 5688 if ((mSupportedDevices.types() & device) != device) { 5689 return false; 5690 } 5691 if ((mFlags & flags) != flags) { 5692 return false; 5693 } 5694 if (checkSamplingRate(samplingRate) != NO_ERROR) { 5695 return false; 5696 } 5697 if (checkChannelMask(channelMask) != NO_ERROR) { 5698 return false; 5699 } 5700 if (checkFormat(format) != NO_ERROR) { 5701 return false; 5702 } 5703 return true; 5704} 5705 5706void AudioPolicyManager::IOProfile::dump(int fd) 5707{ 5708 const size_t SIZE = 256; 5709 char buffer[SIZE]; 5710 String8 result; 5711 5712 AudioPort::dump(fd, 4); 5713 5714 snprintf(buffer, SIZE, " - flags: 0x%04x\n", mFlags); 5715 result.append(buffer); 5716 snprintf(buffer, SIZE, " - devices:\n"); 5717 result.append(buffer); 5718 write(fd, result.string(), result.size()); 5719 for (size_t i = 0; i < mSupportedDevices.size(); i++) { 5720 mSupportedDevices[i]->dump(fd, 6, i); 5721 } 5722} 5723 5724void AudioPolicyManager::IOProfile::log() 5725{ 5726 const size_t SIZE = 256; 5727 char buffer[SIZE]; 5728 String8 result; 5729 5730 ALOGV(" - sampling rates: "); 5731 for (size_t i = 0; i < mSamplingRates.size(); i++) { 5732 ALOGV(" %d", mSamplingRates[i]); 5733 } 5734 5735 ALOGV(" - channel masks: "); 5736 for (size_t i = 0; i < mChannelMasks.size(); i++) { 5737 ALOGV(" 0x%04x", mChannelMasks[i]); 5738 } 5739 5740 ALOGV(" - formats: "); 5741 for (size_t i = 0; i < mFormats.size(); i++) { 5742 ALOGV(" 0x%08x", mFormats[i]); 5743 } 5744 5745 ALOGV(" - devices: 0x%04x\n", mSupportedDevices.types()); 5746 ALOGV(" - flags: 0x%04x\n", mFlags); 5747} 5748 5749 5750// --- DeviceDescriptor implementation 5751 5752 5753AudioPolicyManager::DeviceDescriptor::DeviceDescriptor(const String8& name, audio_devices_t type) : 5754 AudioPort(name, AUDIO_PORT_TYPE_DEVICE, 5755 audio_is_output_device(type) ? AUDIO_PORT_ROLE_SINK : 5756 AUDIO_PORT_ROLE_SOURCE, 5757 NULL), 5758 mDeviceType(type), mAddress(""), mId(0) 5759{ 5760 mAudioPort = this; 5761 if (mGains.size() > 0) { 5762 mGains[0]->getDefaultConfig(&mGain); 5763 } 5764} 5765 5766bool AudioPolicyManager::DeviceDescriptor::equals(const sp<DeviceDescriptor>& other) const 5767{ 5768 // Devices are considered equal if they: 5769 // - are of the same type (a device type cannot be AUDIO_DEVICE_NONE) 5770 // - have the same address or one device does not specify the address 5771 // - have the same channel mask or one device does not specify the channel mask 5772 return (mDeviceType == other->mDeviceType) && 5773 (mAddress == "" || other->mAddress == "" || mAddress == other->mAddress) && 5774 (mChannelMask == 0 || other->mChannelMask == 0 || 5775 mChannelMask == other->mChannelMask); 5776} 5777 5778void AudioPolicyManager::DeviceVector::refreshTypes() 5779{ 5780 mDeviceTypes = AUDIO_DEVICE_NONE; 5781 for(size_t i = 0; i < size(); i++) { 5782 mDeviceTypes |= itemAt(i)->mDeviceType; 5783 } 5784 ALOGV("DeviceVector::refreshTypes() mDeviceTypes %08x", mDeviceTypes); 5785} 5786 5787ssize_t AudioPolicyManager::DeviceVector::indexOf(const sp<DeviceDescriptor>& item) const 5788{ 5789 for(size_t i = 0; i < size(); i++) { 5790 if (item->equals(itemAt(i))) { 5791 return i; 5792 } 5793 } 5794 return -1; 5795} 5796 5797ssize_t AudioPolicyManager::DeviceVector::add(const sp<DeviceDescriptor>& item) 5798{ 5799 ssize_t ret = indexOf(item); 5800 5801 if (ret < 0) { 5802 ret = SortedVector::add(item); 5803 if (ret >= 0) { 5804 refreshTypes(); 5805 } 5806 } else { 5807 ALOGW("DeviceVector::add device %08x already in", item->mDeviceType); 5808 ret = -1; 5809 } 5810 return ret; 5811} 5812 5813ssize_t AudioPolicyManager::DeviceVector::remove(const sp<DeviceDescriptor>& item) 5814{ 5815 size_t i; 5816 ssize_t ret = indexOf(item); 5817 5818 if (ret < 0) { 5819 ALOGW("DeviceVector::remove device %08x not in", item->mDeviceType); 5820 } else { 5821 ret = SortedVector::removeAt(ret); 5822 if (ret >= 0) { 5823 refreshTypes(); 5824 } 5825 } 5826 return ret; 5827} 5828 5829void AudioPolicyManager::DeviceVector::loadDevicesFromType(audio_devices_t types) 5830{ 5831 DeviceVector deviceList; 5832 5833 uint32_t role_bit = AUDIO_DEVICE_BIT_IN & types; 5834 types &= ~role_bit; 5835 5836 while (types) { 5837 uint32_t i = 31 - __builtin_clz(types); 5838 uint32_t type = 1 << i; 5839 types &= ~type; 5840 add(new DeviceDescriptor(String8(""), type | role_bit)); 5841 } 5842} 5843 5844void AudioPolicyManager::DeviceVector::loadDevicesFromName(char *name, 5845 const DeviceVector& declaredDevices) 5846{ 5847 char *devName = strtok(name, "|"); 5848 while (devName != NULL) { 5849 if (strlen(devName) != 0) { 5850 audio_devices_t type = stringToEnum(sDeviceNameToEnumTable, 5851 ARRAY_SIZE(sDeviceNameToEnumTable), 5852 devName); 5853 if (type != AUDIO_DEVICE_NONE) { 5854 add(new DeviceDescriptor(String8(""), type)); 5855 } else { 5856 sp<DeviceDescriptor> deviceDesc = 5857 declaredDevices.getDeviceFromName(String8(devName)); 5858 if (deviceDesc != 0) { 5859 add(deviceDesc); 5860 } 5861 } 5862 } 5863 devName = strtok(NULL, "|"); 5864 } 5865} 5866 5867sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDevice( 5868 audio_devices_t type, String8 address) const 5869{ 5870 sp<DeviceDescriptor> device; 5871 for (size_t i = 0; i < size(); i++) { 5872 if (itemAt(i)->mDeviceType == type) { 5873 device = itemAt(i); 5874 if (itemAt(i)->mAddress = address) { 5875 break; 5876 } 5877 } 5878 } 5879 ALOGV("DeviceVector::getDevice() for type %d address %s found %p", 5880 type, address.string(), device.get()); 5881 return device; 5882} 5883 5884sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDeviceFromId( 5885 audio_port_handle_t id) const 5886{ 5887 sp<DeviceDescriptor> device; 5888 for (size_t i = 0; i < size(); i++) { 5889 ALOGV("DeviceVector::getDeviceFromId(%d) itemAt(%zu)->mId %d", id, i, itemAt(i)->mId); 5890 if (itemAt(i)->mId == id) { 5891 device = itemAt(i); 5892 break; 5893 } 5894 } 5895 return device; 5896} 5897 5898AudioPolicyManager::DeviceVector AudioPolicyManager::DeviceVector::getDevicesFromType( 5899 audio_devices_t type) const 5900{ 5901 DeviceVector devices; 5902 for (size_t i = 0; (i < size()) && (type != AUDIO_DEVICE_NONE); i++) { 5903 if (itemAt(i)->mDeviceType & type & ~AUDIO_DEVICE_BIT_IN) { 5904 devices.add(itemAt(i)); 5905 type &= ~itemAt(i)->mDeviceType; 5906 ALOGV("DeviceVector::getDevicesFromType() for type %x found %p", 5907 itemAt(i)->mDeviceType, itemAt(i).get()); 5908 } 5909 } 5910 return devices; 5911} 5912 5913sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDeviceFromName( 5914 const String8& name) const 5915{ 5916 sp<DeviceDescriptor> device; 5917 for (size_t i = 0; i < size(); i++) { 5918 if (itemAt(i)->mName == name) { 5919 device = itemAt(i); 5920 break; 5921 } 5922 } 5923 return device; 5924} 5925 5926void AudioPolicyManager::DeviceDescriptor::toAudioPortConfig( 5927 struct audio_port_config *dstConfig, 5928 const struct audio_port_config *srcConfig) const 5929{ 5930 dstConfig->config_mask = AUDIO_PORT_CONFIG_CHANNEL_MASK|AUDIO_PORT_CONFIG_GAIN; 5931 if (srcConfig != NULL) { 5932 dstConfig->config_mask |= srcConfig->config_mask; 5933 } 5934 5935 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 5936 5937 dstConfig->id = mId; 5938 dstConfig->role = audio_is_output_device(mDeviceType) ? 5939 AUDIO_PORT_ROLE_SINK : AUDIO_PORT_ROLE_SOURCE; 5940 dstConfig->type = AUDIO_PORT_TYPE_DEVICE; 5941 dstConfig->ext.device.type = mDeviceType; 5942 dstConfig->ext.device.hw_module = mModule->mHandle; 5943 strncpy(dstConfig->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN); 5944} 5945 5946void AudioPolicyManager::DeviceDescriptor::toAudioPort(struct audio_port *port) const 5947{ 5948 ALOGV("DeviceVector::toAudioPort() handle %d type %x", mId, mDeviceType); 5949 AudioPort::toAudioPort(port); 5950 port->id = mId; 5951 toAudioPortConfig(&port->active_config); 5952 port->ext.device.type = mDeviceType; 5953 port->ext.device.hw_module = mModule->mHandle; 5954 strncpy(port->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN); 5955} 5956 5957status_t AudioPolicyManager::DeviceDescriptor::dump(int fd, int spaces, int index) const 5958{ 5959 const size_t SIZE = 256; 5960 char buffer[SIZE]; 5961 String8 result; 5962 5963 snprintf(buffer, SIZE, "%*sDevice %d:\n", spaces, "", index+1); 5964 result.append(buffer); 5965 if (mId != 0) { 5966 snprintf(buffer, SIZE, "%*s- id: %2d\n", spaces, "", mId); 5967 result.append(buffer); 5968 } 5969 snprintf(buffer, SIZE, "%*s- type: %-48s\n", spaces, "", 5970 enumToString(sDeviceNameToEnumTable, 5971 ARRAY_SIZE(sDeviceNameToEnumTable), 5972 mDeviceType)); 5973 result.append(buffer); 5974 if (mAddress.size() != 0) { 5975 snprintf(buffer, SIZE, "%*s- address: %-32s\n", spaces, "", mAddress.string()); 5976 result.append(buffer); 5977 } 5978 write(fd, result.string(), result.size()); 5979 AudioPort::dump(fd, spaces); 5980 5981 return NO_ERROR; 5982} 5983 5984 5985// --- audio_policy.conf file parsing 5986 5987audio_output_flags_t AudioPolicyManager::parseFlagNames(char *name) 5988{ 5989 uint32_t flag = 0; 5990 5991 // it is OK to cast name to non const here as we are not going to use it after 5992 // strtok() modifies it 5993 char *flagName = strtok(name, "|"); 5994 while (flagName != NULL) { 5995 if (strlen(flagName) != 0) { 5996 flag |= stringToEnum(sFlagNameToEnumTable, 5997 ARRAY_SIZE(sFlagNameToEnumTable), 5998 flagName); 5999 } 6000 flagName = strtok(NULL, "|"); 6001 } 6002 //force direct flag if offload flag is set: offloading implies a direct output stream 6003 // and all common behaviors are driven by checking only the direct flag 6004 // this should normally be set appropriately in the policy configuration file 6005 if ((flag & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) { 6006 flag |= AUDIO_OUTPUT_FLAG_DIRECT; 6007 } 6008 6009 return (audio_output_flags_t)flag; 6010} 6011 6012audio_devices_t AudioPolicyManager::parseDeviceNames(char *name) 6013{ 6014 uint32_t device = 0; 6015 6016 char *devName = strtok(name, "|"); 6017 while (devName != NULL) { 6018 if (strlen(devName) != 0) { 6019 device |= stringToEnum(sDeviceNameToEnumTable, 6020 ARRAY_SIZE(sDeviceNameToEnumTable), 6021 devName); 6022 } 6023 devName = strtok(NULL, "|"); 6024 } 6025 return device; 6026} 6027 6028void AudioPolicyManager::loadHwModule(cnode *root) 6029{ 6030 status_t status = NAME_NOT_FOUND; 6031 cnode *node; 6032 sp<HwModule> module = new HwModule(root->name); 6033 6034 node = config_find(root, DEVICES_TAG); 6035 if (node != NULL) { 6036 node = node->first_child; 6037 while (node) { 6038 ALOGV("loadHwModule() loading device %s", node->name); 6039 status_t tmpStatus = module->loadDevice(node); 6040 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 6041 status = tmpStatus; 6042 } 6043 node = node->next; 6044 } 6045 } 6046 node = config_find(root, OUTPUTS_TAG); 6047 if (node != NULL) { 6048 node = node->first_child; 6049 while (node) { 6050 ALOGV("loadHwModule() loading output %s", node->name); 6051 status_t tmpStatus = module->loadOutput(node); 6052 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 6053 status = tmpStatus; 6054 } 6055 node = node->next; 6056 } 6057 } 6058 node = config_find(root, INPUTS_TAG); 6059 if (node != NULL) { 6060 node = node->first_child; 6061 while (node) { 6062 ALOGV("loadHwModule() loading input %s", node->name); 6063 status_t tmpStatus = module->loadInput(node); 6064 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 6065 status = tmpStatus; 6066 } 6067 node = node->next; 6068 } 6069 } 6070 loadGlobalConfig(root, module); 6071 6072 if (status == NO_ERROR) { 6073 mHwModules.add(module); 6074 } 6075} 6076 6077void AudioPolicyManager::loadHwModules(cnode *root) 6078{ 6079 cnode *node = config_find(root, AUDIO_HW_MODULE_TAG); 6080 if (node == NULL) { 6081 return; 6082 } 6083 6084 node = node->first_child; 6085 while (node) { 6086 ALOGV("loadHwModules() loading module %s", node->name); 6087 loadHwModule(node); 6088 node = node->next; 6089 } 6090} 6091 6092void AudioPolicyManager::loadGlobalConfig(cnode *root, const sp<HwModule>& module) 6093{ 6094 cnode *node = config_find(root, GLOBAL_CONFIG_TAG); 6095 6096 if (node == NULL) { 6097 return; 6098 } 6099 DeviceVector declaredDevices; 6100 if (module != NULL) { 6101 declaredDevices = module->mDeclaredDevices; 6102 } 6103 6104 node = node->first_child; 6105 while (node) { 6106 if (strcmp(ATTACHED_OUTPUT_DEVICES_TAG, node->name) == 0) { 6107 mAvailableOutputDevices.loadDevicesFromName((char *)node->value, 6108 declaredDevices); 6109 ALOGV("loadGlobalConfig() Attached Output Devices %08x", 6110 mAvailableOutputDevices.types()); 6111 } else if (strcmp(DEFAULT_OUTPUT_DEVICE_TAG, node->name) == 0) { 6112 audio_devices_t device = (audio_devices_t)stringToEnum(sDeviceNameToEnumTable, 6113 ARRAY_SIZE(sDeviceNameToEnumTable), 6114 (char *)node->value); 6115 if (device != AUDIO_DEVICE_NONE) { 6116 mDefaultOutputDevice = new DeviceDescriptor(String8(""), device); 6117 } else { 6118 ALOGW("loadGlobalConfig() default device not specified"); 6119 } 6120 ALOGV("loadGlobalConfig() mDefaultOutputDevice %08x", mDefaultOutputDevice->mDeviceType); 6121 } else if (strcmp(ATTACHED_INPUT_DEVICES_TAG, node->name) == 0) { 6122 mAvailableInputDevices.loadDevicesFromName((char *)node->value, 6123 declaredDevices); 6124 ALOGV("loadGlobalConfig() Available InputDevices %08x", mAvailableInputDevices.types()); 6125 } else if (strcmp(SPEAKER_DRC_ENABLED_TAG, node->name) == 0) { 6126 mSpeakerDrcEnabled = stringToBool((char *)node->value); 6127 ALOGV("loadGlobalConfig() mSpeakerDrcEnabled = %d", mSpeakerDrcEnabled); 6128 } else if (strcmp(AUDIO_HAL_VERSION_TAG, node->name) == 0) { 6129 uint32_t major, minor; 6130 sscanf((char *)node->value, "%u.%u", &major, &minor); 6131 module->mHalVersion = HARDWARE_DEVICE_API_VERSION(major, minor); 6132 ALOGV("loadGlobalConfig() mHalVersion = %04x major %u minor %u", 6133 module->mHalVersion, major, minor); 6134 } 6135 node = node->next; 6136 } 6137} 6138 6139status_t AudioPolicyManager::loadAudioPolicyConfig(const char *path) 6140{ 6141 cnode *root; 6142 char *data; 6143 6144 data = (char *)load_file(path, NULL); 6145 if (data == NULL) { 6146 return -ENODEV; 6147 } 6148 root = config_node("", ""); 6149 config_load(root, data); 6150 6151 loadHwModules(root); 6152 // legacy audio_policy.conf files have one global_configuration section 6153 loadGlobalConfig(root, getModuleFromName(AUDIO_HARDWARE_MODULE_ID_PRIMARY)); 6154 config_free(root); 6155 free(root); 6156 free(data); 6157 6158 ALOGI("loadAudioPolicyConfig() loaded %s\n", path); 6159 6160 return NO_ERROR; 6161} 6162 6163void AudioPolicyManager::defaultAudioPolicyConfig(void) 6164{ 6165 sp<HwModule> module; 6166 sp<IOProfile> profile; 6167 sp<DeviceDescriptor> defaultInputDevice = new DeviceDescriptor(String8(""), 6168 AUDIO_DEVICE_IN_BUILTIN_MIC); 6169 mAvailableOutputDevices.add(mDefaultOutputDevice); 6170 mAvailableInputDevices.add(defaultInputDevice); 6171 6172 module = new HwModule("primary"); 6173 6174 profile = new IOProfile(String8("primary"), AUDIO_PORT_ROLE_SOURCE, module); 6175 profile->mSamplingRates.add(44100); 6176 profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT); 6177 profile->mChannelMasks.add(AUDIO_CHANNEL_OUT_STEREO); 6178 profile->mSupportedDevices.add(mDefaultOutputDevice); 6179 profile->mFlags = AUDIO_OUTPUT_FLAG_PRIMARY; 6180 module->mOutputProfiles.add(profile); 6181 6182 profile = new IOProfile(String8("primary"), AUDIO_PORT_ROLE_SINK, module); 6183 profile->mSamplingRates.add(8000); 6184 profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT); 6185 profile->mChannelMasks.add(AUDIO_CHANNEL_IN_MONO); 6186 profile->mSupportedDevices.add(defaultInputDevice); 6187 module->mInputProfiles.add(profile); 6188 6189 mHwModules.add(module); 6190} 6191 6192audio_stream_type_t AudioPolicyManager::streamTypefromAttributesInt(const audio_attributes_t *attr) 6193{ 6194 // flags to stream type mapping 6195 if ((attr->flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) { 6196 return AUDIO_STREAM_ENFORCED_AUDIBLE; 6197 } 6198 if ((attr->flags & AUDIO_FLAG_SCO) == AUDIO_FLAG_SCO) { 6199 return AUDIO_STREAM_BLUETOOTH_SCO; 6200 } 6201 6202 // usage to stream type mapping 6203 switch (attr->usage) { 6204 case AUDIO_USAGE_MEDIA: 6205 case AUDIO_USAGE_GAME: 6206 case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY: 6207 case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: 6208 return AUDIO_STREAM_MUSIC; 6209 case AUDIO_USAGE_ASSISTANCE_SONIFICATION: 6210 return AUDIO_STREAM_SYSTEM; 6211 case AUDIO_USAGE_VOICE_COMMUNICATION: 6212 return AUDIO_STREAM_VOICE_CALL; 6213 6214 case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING: 6215 return AUDIO_STREAM_DTMF; 6216 6217 case AUDIO_USAGE_ALARM: 6218 return AUDIO_STREAM_ALARM; 6219 case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE: 6220 return AUDIO_STREAM_RING; 6221 6222 case AUDIO_USAGE_NOTIFICATION: 6223 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST: 6224 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT: 6225 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED: 6226 case AUDIO_USAGE_NOTIFICATION_EVENT: 6227 return AUDIO_STREAM_NOTIFICATION; 6228 6229 case AUDIO_USAGE_UNKNOWN: 6230 default: 6231 return AUDIO_STREAM_MUSIC; 6232 } 6233} 6234}; // namespace android 6235