AudioPolicyManager.cpp revision 83b8808faad1e91690c64d7007348be8d9ebde73
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 ALOGV("createAudioPatch() profile not supported"); 1879 return INVALID_OPERATION; 1880 } 1881 // TODO: reconfigure output format and channels here 1882 ALOGV("createAudioPatch() setting device %08x on output %d", 1883 devDesc->mDeviceType, outputDesc->mIoHandle); 1884 setOutputDevice(outputDesc->mIoHandle, 1885 devDesc->mDeviceType, 1886 true, 1887 0, 1888 handle); 1889 index = mAudioPatches.indexOfKey(*handle); 1890 if (index >= 0) { 1891 if (patchDesc != 0 && patchDesc != mAudioPatches.valueAt(index)) { 1892 ALOGW("createAudioPatch() setOutputDevice() did not reuse the patch provided"); 1893 } 1894 patchDesc = mAudioPatches.valueAt(index); 1895 patchDesc->mUid = uid; 1896 ALOGV("createAudioPatch() success"); 1897 } else { 1898 ALOGW("createAudioPatch() setOutputDevice() failed to create a patch"); 1899 return INVALID_OPERATION; 1900 } 1901 } else if (patch->sources[0].type == AUDIO_PORT_TYPE_DEVICE) { 1902 if (patch->sinks[0].type == AUDIO_PORT_TYPE_MIX) { 1903 // input device to input mix connection 1904 sp<AudioInputDescriptor> inputDesc = getInputFromId(patch->sinks[0].id); 1905 if (inputDesc == NULL) { 1906 return BAD_VALUE; 1907 } 1908 if (patchDesc != 0) { 1909 if (patchDesc->mPatch.sinks[0].id != patch->sinks[0].id) { 1910 return BAD_VALUE; 1911 } 1912 } 1913 sp<DeviceDescriptor> devDesc = 1914 mAvailableInputDevices.getDeviceFromId(patch->sources[0].id); 1915 if (devDesc == 0) { 1916 return BAD_VALUE; 1917 } 1918 1919 if (!inputDesc->mProfile->isCompatibleProfile(devDesc->mDeviceType, 1920 patch->sinks[0].sample_rate, 1921 patch->sinks[0].format, 1922 patch->sinks[0].channel_mask, 1923 AUDIO_OUTPUT_FLAG_NONE)) { 1924 return INVALID_OPERATION; 1925 } 1926 // TODO: reconfigure output format and channels here 1927 ALOGV("createAudioPatch() setting device %08x on output %d", 1928 devDesc->mDeviceType, inputDesc->mIoHandle); 1929 setInputDevice(inputDesc->mIoHandle, 1930 devDesc->mDeviceType, 1931 true, 1932 handle); 1933 index = mAudioPatches.indexOfKey(*handle); 1934 if (index >= 0) { 1935 if (patchDesc != 0 && patchDesc != mAudioPatches.valueAt(index)) { 1936 ALOGW("createAudioPatch() setInputDevice() did not reuse the patch provided"); 1937 } 1938 patchDesc = mAudioPatches.valueAt(index); 1939 patchDesc->mUid = uid; 1940 ALOGV("createAudioPatch() success"); 1941 } else { 1942 ALOGW("createAudioPatch() setInputDevice() failed to create a patch"); 1943 return INVALID_OPERATION; 1944 } 1945 } else if (patch->sinks[0].type == AUDIO_PORT_TYPE_DEVICE) { 1946 // device to device connection 1947 if (patchDesc != 0) { 1948 if (patchDesc->mPatch.sources[0].id != patch->sources[0].id && 1949 patchDesc->mPatch.sinks[0].id != patch->sinks[0].id) { 1950 return BAD_VALUE; 1951 } 1952 } 1953 1954 sp<DeviceDescriptor> srcDeviceDesc = 1955 mAvailableInputDevices.getDeviceFromId(patch->sources[0].id); 1956 sp<DeviceDescriptor> sinkDeviceDesc = 1957 mAvailableOutputDevices.getDeviceFromId(patch->sinks[0].id); 1958 if (srcDeviceDesc == 0 || sinkDeviceDesc == 0) { 1959 return BAD_VALUE; 1960 } 1961 //update source and sink with our own data as the data passed in the patch may 1962 // be incomplete. 1963 struct audio_patch newPatch = *patch; 1964 srcDeviceDesc->toAudioPortConfig(&newPatch.sources[0], &patch->sources[0]); 1965 sinkDeviceDesc->toAudioPortConfig(&newPatch.sinks[0], &patch->sinks[0]); 1966 1967 if (srcDeviceDesc->mModule != sinkDeviceDesc->mModule) { 1968 SortedVector<audio_io_handle_t> outputs = 1969 getOutputsForDevice(sinkDeviceDesc->mDeviceType, mOutputs); 1970 // if the sink device is reachable via an opened output stream, request to go via 1971 // this output stream by adding a second source to the patch description 1972 audio_io_handle_t output = selectOutput(outputs, AUDIO_OUTPUT_FLAG_NONE); 1973 if (output != AUDIO_IO_HANDLE_NONE) { 1974 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 1975 if (outputDesc->isDuplicated()) { 1976 return INVALID_OPERATION; 1977 } 1978 outputDesc->toAudioPortConfig(&newPatch.sources[1], &patch->sources[0]); 1979 newPatch.num_sources = 2; 1980 } 1981 } 1982 // TODO: check from routing capabilities in config file and other conflicting patches 1983 1984 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 1985 if (index >= 0) { 1986 afPatchHandle = patchDesc->mAfPatchHandle; 1987 } 1988 1989 status_t status = mpClientInterface->createAudioPatch(&newPatch, 1990 &afPatchHandle, 1991 0); 1992 ALOGV("createAudioPatch() patch panel returned %d patchHandle %d", 1993 status, afPatchHandle); 1994 if (status == NO_ERROR) { 1995 if (index < 0) { 1996 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 1997 &newPatch, uid); 1998 addAudioPatch(patchDesc->mHandle, patchDesc); 1999 } else { 2000 patchDesc->mPatch = newPatch; 2001 } 2002 patchDesc->mAfPatchHandle = afPatchHandle; 2003 *handle = patchDesc->mHandle; 2004 nextAudioPortGeneration(); 2005 mpClientInterface->onAudioPatchListUpdate(); 2006 } else { 2007 ALOGW("createAudioPatch() patch panel could not connect device patch, error %d", 2008 status); 2009 return INVALID_OPERATION; 2010 } 2011 } else { 2012 return BAD_VALUE; 2013 } 2014 } else { 2015 return BAD_VALUE; 2016 } 2017 return NO_ERROR; 2018} 2019 2020status_t AudioPolicyManager::releaseAudioPatch(audio_patch_handle_t handle, 2021 uid_t uid) 2022{ 2023 ALOGV("releaseAudioPatch() patch %d", handle); 2024 2025 ssize_t index = mAudioPatches.indexOfKey(handle); 2026 2027 if (index < 0) { 2028 return BAD_VALUE; 2029 } 2030 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 2031 ALOGV("releaseAudioPatch() mUidCached %d patchDesc->mUid %d uid %d", 2032 mUidCached, patchDesc->mUid, uid); 2033 if (patchDesc->mUid != mUidCached && uid != patchDesc->mUid) { 2034 return INVALID_OPERATION; 2035 } 2036 2037 struct audio_patch *patch = &patchDesc->mPatch; 2038 patchDesc->mUid = mUidCached; 2039 if (patch->sources[0].type == AUDIO_PORT_TYPE_MIX) { 2040 sp<AudioOutputDescriptor> outputDesc = getOutputFromId(patch->sources[0].id); 2041 if (outputDesc == NULL) { 2042 ALOGV("releaseAudioPatch() output not found for id %d", patch->sources[0].id); 2043 return BAD_VALUE; 2044 } 2045 2046 setOutputDevice(outputDesc->mIoHandle, 2047 getNewOutputDevice(outputDesc->mIoHandle, true /*fromCache*/), 2048 true, 2049 0, 2050 NULL); 2051 } else if (patch->sources[0].type == AUDIO_PORT_TYPE_DEVICE) { 2052 if (patch->sinks[0].type == AUDIO_PORT_TYPE_MIX) { 2053 sp<AudioInputDescriptor> inputDesc = getInputFromId(patch->sinks[0].id); 2054 if (inputDesc == NULL) { 2055 ALOGV("releaseAudioPatch() input not found for id %d", patch->sinks[0].id); 2056 return BAD_VALUE; 2057 } 2058 setInputDevice(inputDesc->mIoHandle, 2059 getNewInputDevice(inputDesc->mIoHandle), 2060 true, 2061 NULL); 2062 } else if (patch->sinks[0].type == AUDIO_PORT_TYPE_DEVICE) { 2063 audio_patch_handle_t afPatchHandle = patchDesc->mAfPatchHandle; 2064 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 2065 ALOGV("releaseAudioPatch() patch panel returned %d patchHandle %d", 2066 status, patchDesc->mAfPatchHandle); 2067 removeAudioPatch(patchDesc->mHandle); 2068 nextAudioPortGeneration(); 2069 mpClientInterface->onAudioPatchListUpdate(); 2070 } else { 2071 return BAD_VALUE; 2072 } 2073 } else { 2074 return BAD_VALUE; 2075 } 2076 return NO_ERROR; 2077} 2078 2079status_t AudioPolicyManager::listAudioPatches(unsigned int *num_patches, 2080 struct audio_patch *patches, 2081 unsigned int *generation) 2082{ 2083 if (num_patches == NULL || (*num_patches != 0 && patches == NULL) || 2084 generation == NULL) { 2085 return BAD_VALUE; 2086 } 2087 ALOGV("listAudioPatches() num_patches %d patches %p available patches %zu", 2088 *num_patches, patches, mAudioPatches.size()); 2089 if (patches == NULL) { 2090 *num_patches = 0; 2091 } 2092 2093 size_t patchesWritten = 0; 2094 size_t patchesMax = *num_patches; 2095 for (size_t i = 0; 2096 i < mAudioPatches.size() && patchesWritten < patchesMax; i++) { 2097 patches[patchesWritten] = mAudioPatches[i]->mPatch; 2098 patches[patchesWritten++].id = mAudioPatches[i]->mHandle; 2099 ALOGV("listAudioPatches() patch %zu num_sources %d num_sinks %d", 2100 i, mAudioPatches[i]->mPatch.num_sources, mAudioPatches[i]->mPatch.num_sinks); 2101 } 2102 *num_patches = mAudioPatches.size(); 2103 2104 *generation = curAudioPortGeneration(); 2105 ALOGV("listAudioPatches() got %zu patches needed %d", patchesWritten, *num_patches); 2106 return NO_ERROR; 2107} 2108 2109status_t AudioPolicyManager::setAudioPortConfig(const struct audio_port_config *config) 2110{ 2111 ALOGV("setAudioPortConfig()"); 2112 2113 if (config == NULL) { 2114 return BAD_VALUE; 2115 } 2116 ALOGV("setAudioPortConfig() on port handle %d", config->id); 2117 // Only support gain configuration for now 2118 if (config->config_mask != AUDIO_PORT_CONFIG_GAIN) { 2119 return INVALID_OPERATION; 2120 } 2121 2122 sp<AudioPortConfig> audioPortConfig; 2123 if (config->type == AUDIO_PORT_TYPE_MIX) { 2124 if (config->role == AUDIO_PORT_ROLE_SOURCE) { 2125 sp<AudioOutputDescriptor> outputDesc = getOutputFromId(config->id); 2126 if (outputDesc == NULL) { 2127 return BAD_VALUE; 2128 } 2129 ALOG_ASSERT(!outputDesc->isDuplicated(), 2130 "setAudioPortConfig() called on duplicated output %d", 2131 outputDesc->mIoHandle); 2132 audioPortConfig = outputDesc; 2133 } else if (config->role == AUDIO_PORT_ROLE_SINK) { 2134 sp<AudioInputDescriptor> inputDesc = getInputFromId(config->id); 2135 if (inputDesc == NULL) { 2136 return BAD_VALUE; 2137 } 2138 audioPortConfig = inputDesc; 2139 } else { 2140 return BAD_VALUE; 2141 } 2142 } else if (config->type == AUDIO_PORT_TYPE_DEVICE) { 2143 sp<DeviceDescriptor> deviceDesc; 2144 if (config->role == AUDIO_PORT_ROLE_SOURCE) { 2145 deviceDesc = mAvailableInputDevices.getDeviceFromId(config->id); 2146 } else if (config->role == AUDIO_PORT_ROLE_SINK) { 2147 deviceDesc = mAvailableOutputDevices.getDeviceFromId(config->id); 2148 } else { 2149 return BAD_VALUE; 2150 } 2151 if (deviceDesc == NULL) { 2152 return BAD_VALUE; 2153 } 2154 audioPortConfig = deviceDesc; 2155 } else { 2156 return BAD_VALUE; 2157 } 2158 2159 struct audio_port_config backupConfig; 2160 status_t status = audioPortConfig->applyAudioPortConfig(config, &backupConfig); 2161 if (status == NO_ERROR) { 2162 struct audio_port_config newConfig; 2163 audioPortConfig->toAudioPortConfig(&newConfig, config); 2164 status = mpClientInterface->setAudioPortConfig(&newConfig, 0); 2165 } 2166 if (status != NO_ERROR) { 2167 audioPortConfig->applyAudioPortConfig(&backupConfig); 2168 } 2169 2170 return status; 2171} 2172 2173void AudioPolicyManager::clearAudioPatches(uid_t uid) 2174{ 2175 for (ssize_t i = 0; i < (ssize_t)mAudioPatches.size(); i++) { 2176 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(i); 2177 if (patchDesc->mUid == uid) { 2178 // releaseAudioPatch() removes the patch from mAudioPatches 2179 if (releaseAudioPatch(mAudioPatches.keyAt(i), uid) == NO_ERROR) { 2180 i--; 2181 } 2182 } 2183 } 2184} 2185 2186status_t AudioPolicyManager::addAudioPatch(audio_patch_handle_t handle, 2187 const sp<AudioPatch>& patch) 2188{ 2189 ssize_t index = mAudioPatches.indexOfKey(handle); 2190 2191 if (index >= 0) { 2192 ALOGW("addAudioPatch() patch %d already in", handle); 2193 return ALREADY_EXISTS; 2194 } 2195 mAudioPatches.add(handle, patch); 2196 ALOGV("addAudioPatch() handle %d af handle %d num_sources %d num_sinks %d source handle %d" 2197 "sink handle %d", 2198 handle, patch->mAfPatchHandle, patch->mPatch.num_sources, patch->mPatch.num_sinks, 2199 patch->mPatch.sources[0].id, patch->mPatch.sinks[0].id); 2200 return NO_ERROR; 2201} 2202 2203status_t AudioPolicyManager::removeAudioPatch(audio_patch_handle_t handle) 2204{ 2205 ssize_t index = mAudioPatches.indexOfKey(handle); 2206 2207 if (index < 0) { 2208 ALOGW("removeAudioPatch() patch %d not in", handle); 2209 return ALREADY_EXISTS; 2210 } 2211 ALOGV("removeAudioPatch() handle %d af handle %d", handle, 2212 mAudioPatches.valueAt(index)->mAfPatchHandle); 2213 mAudioPatches.removeItemsAt(index); 2214 return NO_ERROR; 2215} 2216 2217// ---------------------------------------------------------------------------- 2218// AudioPolicyManager 2219// ---------------------------------------------------------------------------- 2220 2221uint32_t AudioPolicyManager::nextUniqueId() 2222{ 2223 return android_atomic_inc(&mNextUniqueId); 2224} 2225 2226uint32_t AudioPolicyManager::nextAudioPortGeneration() 2227{ 2228 return android_atomic_inc(&mAudioPortGeneration); 2229} 2230 2231AudioPolicyManager::AudioPolicyManager(AudioPolicyClientInterface *clientInterface) 2232 : 2233#ifdef AUDIO_POLICY_TEST 2234 Thread(false), 2235#endif //AUDIO_POLICY_TEST 2236 mPrimaryOutput((audio_io_handle_t)0), 2237 mPhoneState(AUDIO_MODE_NORMAL), 2238 mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f), 2239 mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0), 2240 mA2dpSuspended(false), 2241 mSpeakerDrcEnabled(false), mNextUniqueId(1), 2242 mAudioPortGeneration(1) 2243{ 2244 mUidCached = getuid(); 2245 mpClientInterface = clientInterface; 2246 2247 for (int i = 0; i < AUDIO_POLICY_FORCE_USE_CNT; i++) { 2248 mForceUse[i] = AUDIO_POLICY_FORCE_NONE; 2249 } 2250 2251 mDefaultOutputDevice = new DeviceDescriptor(String8(""), AUDIO_DEVICE_OUT_SPEAKER); 2252 if (loadAudioPolicyConfig(AUDIO_POLICY_VENDOR_CONFIG_FILE) != NO_ERROR) { 2253 if (loadAudioPolicyConfig(AUDIO_POLICY_CONFIG_FILE) != NO_ERROR) { 2254 ALOGE("could not load audio policy configuration file, setting defaults"); 2255 defaultAudioPolicyConfig(); 2256 } 2257 } 2258 // mAvailableOutputDevices and mAvailableInputDevices now contain all attached devices 2259 2260 // must be done after reading the policy 2261 initializeVolumeCurves(); 2262 2263 // open all output streams needed to access attached devices 2264 audio_devices_t outputDeviceTypes = mAvailableOutputDevices.types(); 2265 audio_devices_t inputDeviceTypes = mAvailableInputDevices.types() & ~AUDIO_DEVICE_BIT_IN; 2266 for (size_t i = 0; i < mHwModules.size(); i++) { 2267 mHwModules[i]->mHandle = mpClientInterface->loadHwModule(mHwModules[i]->mName); 2268 if (mHwModules[i]->mHandle == 0) { 2269 ALOGW("could not open HW module %s", mHwModules[i]->mName); 2270 continue; 2271 } 2272 // open all output streams needed to access attached devices 2273 // except for direct output streams that are only opened when they are actually 2274 // required by an app. 2275 // This also validates mAvailableOutputDevices list 2276 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 2277 { 2278 const sp<IOProfile> outProfile = mHwModules[i]->mOutputProfiles[j]; 2279 2280 if (outProfile->mSupportedDevices.isEmpty()) { 2281 ALOGW("Output profile contains no device on module %s", mHwModules[i]->mName); 2282 continue; 2283 } 2284 2285 audio_devices_t profileType = outProfile->mSupportedDevices.types(); 2286 if ((profileType & mDefaultOutputDevice->mDeviceType) != AUDIO_DEVICE_NONE) { 2287 profileType = mDefaultOutputDevice->mDeviceType; 2288 } else { 2289 profileType = outProfile->mSupportedDevices[0]->mDeviceType; 2290 } 2291 if ((profileType & outputDeviceTypes) && 2292 ((outProfile->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) == 0)) { 2293 sp<AudioOutputDescriptor> outputDesc = new AudioOutputDescriptor(outProfile); 2294 2295 outputDesc->mDevice = profileType; 2296 audio_io_handle_t output = mpClientInterface->openOutput( 2297 outProfile->mModule->mHandle, 2298 &outputDesc->mDevice, 2299 &outputDesc->mSamplingRate, 2300 &outputDesc->mFormat, 2301 &outputDesc->mChannelMask, 2302 &outputDesc->mLatency, 2303 outputDesc->mFlags); 2304 if (output == 0) { 2305 ALOGW("Cannot open output stream for device %08x on hw module %s", 2306 outputDesc->mDevice, 2307 mHwModules[i]->mName); 2308 } else { 2309 for (size_t k = 0; k < outProfile->mSupportedDevices.size(); k++) { 2310 audio_devices_t type = outProfile->mSupportedDevices[k]->mDeviceType; 2311 ssize_t index = 2312 mAvailableOutputDevices.indexOf(outProfile->mSupportedDevices[k]); 2313 // give a valid ID to an attached device once confirmed it is reachable 2314 if ((index >= 0) && (mAvailableOutputDevices[index]->mId == 0)) { 2315 mAvailableOutputDevices[index]->mId = nextUniqueId(); 2316 mAvailableOutputDevices[index]->mModule = mHwModules[i]; 2317 } 2318 } 2319 if (mPrimaryOutput == 0 && 2320 outProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) { 2321 mPrimaryOutput = output; 2322 } 2323 addOutput(output, outputDesc); 2324 ALOGI("CSTOR setOutputDevice %08x", outputDesc->mDevice); 2325 setOutputDevice(output, 2326 outputDesc->mDevice, 2327 true); 2328 } 2329 } 2330 } 2331 // open input streams needed to access attached devices to validate 2332 // mAvailableInputDevices list 2333 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) 2334 { 2335 const sp<IOProfile> inProfile = mHwModules[i]->mInputProfiles[j]; 2336 2337 if (inProfile->mSupportedDevices.isEmpty()) { 2338 ALOGW("Input profile contains no device on module %s", mHwModules[i]->mName); 2339 continue; 2340 } 2341 2342 audio_devices_t profileType = inProfile->mSupportedDevices[0]->mDeviceType; 2343 if (profileType & inputDeviceTypes) { 2344 sp<AudioInputDescriptor> inputDesc = new AudioInputDescriptor(inProfile); 2345 2346 inputDesc->mInputSource = AUDIO_SOURCE_MIC; 2347 inputDesc->mDevice = profileType; 2348 audio_io_handle_t input = mpClientInterface->openInput( 2349 inProfile->mModule->mHandle, 2350 &inputDesc->mDevice, 2351 &inputDesc->mSamplingRate, 2352 &inputDesc->mFormat, 2353 &inputDesc->mChannelMask, 2354 AUDIO_INPUT_FLAG_FAST /*FIXME*/); 2355 2356 if (input != 0) { 2357 for (size_t k = 0; k < inProfile->mSupportedDevices.size(); k++) { 2358 audio_devices_t type = inProfile->mSupportedDevices[k]->mDeviceType; 2359 ssize_t index = 2360 mAvailableInputDevices.indexOf(inProfile->mSupportedDevices[k]); 2361 // give a valid ID to an attached device once confirmed it is reachable 2362 if ((index >= 0) && (mAvailableInputDevices[index]->mId == 0)) { 2363 mAvailableInputDevices[index]->mId = nextUniqueId(); 2364 mAvailableInputDevices[index]->mModule = mHwModules[i]; 2365 } 2366 } 2367 mpClientInterface->closeInput(input); 2368 } else { 2369 ALOGW("Cannot open input stream for device %08x on hw module %s", 2370 inputDesc->mDevice, 2371 mHwModules[i]->mName); 2372 } 2373 } 2374 } 2375 } 2376 // make sure all attached devices have been allocated a unique ID 2377 for (size_t i = 0; i < mAvailableOutputDevices.size();) { 2378 if (mAvailableOutputDevices[i]->mId == 0) { 2379 ALOGW("Input device %08x unreachable", mAvailableOutputDevices[i]->mDeviceType); 2380 mAvailableOutputDevices.remove(mAvailableOutputDevices[i]); 2381 continue; 2382 } 2383 i++; 2384 } 2385 for (size_t i = 0; i < mAvailableInputDevices.size();) { 2386 if (mAvailableInputDevices[i]->mId == 0) { 2387 ALOGW("Input device %08x unreachable", mAvailableInputDevices[i]->mDeviceType); 2388 mAvailableInputDevices.remove(mAvailableInputDevices[i]); 2389 continue; 2390 } 2391 i++; 2392 } 2393 // make sure default device is reachable 2394 if (mAvailableOutputDevices.indexOf(mDefaultOutputDevice) < 0) { 2395 ALOGE("Default device %08x is unreachable", mDefaultOutputDevice->mDeviceType); 2396 } 2397 2398 ALOGE_IF((mPrimaryOutput == 0), "Failed to open primary output"); 2399 2400 updateDevicesAndOutputs(); 2401 2402#ifdef AUDIO_POLICY_TEST 2403 if (mPrimaryOutput != 0) { 2404 AudioParameter outputCmd = AudioParameter(); 2405 outputCmd.addInt(String8("set_id"), 0); 2406 mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString()); 2407 2408 mTestDevice = AUDIO_DEVICE_OUT_SPEAKER; 2409 mTestSamplingRate = 44100; 2410 mTestFormat = AUDIO_FORMAT_PCM_16_BIT; 2411 mTestChannels = AUDIO_CHANNEL_OUT_STEREO; 2412 mTestLatencyMs = 0; 2413 mCurOutput = 0; 2414 mDirectOutput = false; 2415 for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { 2416 mTestOutputs[i] = 0; 2417 } 2418 2419 const size_t SIZE = 256; 2420 char buffer[SIZE]; 2421 snprintf(buffer, SIZE, "AudioPolicyManagerTest"); 2422 run(buffer, ANDROID_PRIORITY_AUDIO); 2423 } 2424#endif //AUDIO_POLICY_TEST 2425} 2426 2427AudioPolicyManager::~AudioPolicyManager() 2428{ 2429#ifdef AUDIO_POLICY_TEST 2430 exit(); 2431#endif //AUDIO_POLICY_TEST 2432 for (size_t i = 0; i < mOutputs.size(); i++) { 2433 mpClientInterface->closeOutput(mOutputs.keyAt(i)); 2434 } 2435 for (size_t i = 0; i < mInputs.size(); i++) { 2436 mpClientInterface->closeInput(mInputs.keyAt(i)); 2437 } 2438 mAvailableOutputDevices.clear(); 2439 mAvailableInputDevices.clear(); 2440 mOutputs.clear(); 2441 mInputs.clear(); 2442 mHwModules.clear(); 2443} 2444 2445status_t AudioPolicyManager::initCheck() 2446{ 2447 return (mPrimaryOutput == 0) ? NO_INIT : NO_ERROR; 2448} 2449 2450#ifdef AUDIO_POLICY_TEST 2451bool AudioPolicyManager::threadLoop() 2452{ 2453 ALOGV("entering threadLoop()"); 2454 while (!exitPending()) 2455 { 2456 String8 command; 2457 int valueInt; 2458 String8 value; 2459 2460 Mutex::Autolock _l(mLock); 2461 mWaitWorkCV.waitRelative(mLock, milliseconds(50)); 2462 2463 command = mpClientInterface->getParameters(0, String8("test_cmd_policy")); 2464 AudioParameter param = AudioParameter(command); 2465 2466 if (param.getInt(String8("test_cmd_policy"), valueInt) == NO_ERROR && 2467 valueInt != 0) { 2468 ALOGV("Test command %s received", command.string()); 2469 String8 target; 2470 if (param.get(String8("target"), target) != NO_ERROR) { 2471 target = "Manager"; 2472 } 2473 if (param.getInt(String8("test_cmd_policy_output"), valueInt) == NO_ERROR) { 2474 param.remove(String8("test_cmd_policy_output")); 2475 mCurOutput = valueInt; 2476 } 2477 if (param.get(String8("test_cmd_policy_direct"), value) == NO_ERROR) { 2478 param.remove(String8("test_cmd_policy_direct")); 2479 if (value == "false") { 2480 mDirectOutput = false; 2481 } else if (value == "true") { 2482 mDirectOutput = true; 2483 } 2484 } 2485 if (param.getInt(String8("test_cmd_policy_input"), valueInt) == NO_ERROR) { 2486 param.remove(String8("test_cmd_policy_input")); 2487 mTestInput = valueInt; 2488 } 2489 2490 if (param.get(String8("test_cmd_policy_format"), value) == NO_ERROR) { 2491 param.remove(String8("test_cmd_policy_format")); 2492 int format = AUDIO_FORMAT_INVALID; 2493 if (value == "PCM 16 bits") { 2494 format = AUDIO_FORMAT_PCM_16_BIT; 2495 } else if (value == "PCM 8 bits") { 2496 format = AUDIO_FORMAT_PCM_8_BIT; 2497 } else if (value == "Compressed MP3") { 2498 format = AUDIO_FORMAT_MP3; 2499 } 2500 if (format != AUDIO_FORMAT_INVALID) { 2501 if (target == "Manager") { 2502 mTestFormat = format; 2503 } else if (mTestOutputs[mCurOutput] != 0) { 2504 AudioParameter outputParam = AudioParameter(); 2505 outputParam.addInt(String8("format"), format); 2506 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2507 } 2508 } 2509 } 2510 if (param.get(String8("test_cmd_policy_channels"), value) == NO_ERROR) { 2511 param.remove(String8("test_cmd_policy_channels")); 2512 int channels = 0; 2513 2514 if (value == "Channels Stereo") { 2515 channels = AUDIO_CHANNEL_OUT_STEREO; 2516 } else if (value == "Channels Mono") { 2517 channels = AUDIO_CHANNEL_OUT_MONO; 2518 } 2519 if (channels != 0) { 2520 if (target == "Manager") { 2521 mTestChannels = channels; 2522 } else if (mTestOutputs[mCurOutput] != 0) { 2523 AudioParameter outputParam = AudioParameter(); 2524 outputParam.addInt(String8("channels"), channels); 2525 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2526 } 2527 } 2528 } 2529 if (param.getInt(String8("test_cmd_policy_sampleRate"), valueInt) == NO_ERROR) { 2530 param.remove(String8("test_cmd_policy_sampleRate")); 2531 if (valueInt >= 0 && valueInt <= 96000) { 2532 int samplingRate = valueInt; 2533 if (target == "Manager") { 2534 mTestSamplingRate = samplingRate; 2535 } else if (mTestOutputs[mCurOutput] != 0) { 2536 AudioParameter outputParam = AudioParameter(); 2537 outputParam.addInt(String8("sampling_rate"), samplingRate); 2538 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2539 } 2540 } 2541 } 2542 2543 if (param.get(String8("test_cmd_policy_reopen"), value) == NO_ERROR) { 2544 param.remove(String8("test_cmd_policy_reopen")); 2545 2546 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(mPrimaryOutput); 2547 mpClientInterface->closeOutput(mPrimaryOutput); 2548 2549 audio_module_handle_t moduleHandle = outputDesc->mModule->mHandle; 2550 2551 mOutputs.removeItem(mPrimaryOutput); 2552 2553 sp<AudioOutputDescriptor> outputDesc = new AudioOutputDescriptor(NULL); 2554 outputDesc->mDevice = AUDIO_DEVICE_OUT_SPEAKER; 2555 mPrimaryOutput = mpClientInterface->openOutput(moduleHandle, 2556 &outputDesc->mDevice, 2557 &outputDesc->mSamplingRate, 2558 &outputDesc->mFormat, 2559 &outputDesc->mChannelMask, 2560 &outputDesc->mLatency, 2561 outputDesc->mFlags); 2562 if (mPrimaryOutput == 0) { 2563 ALOGE("Failed to reopen hardware output stream, samplingRate: %d, format %d, channels %d", 2564 outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannelMask); 2565 } else { 2566 AudioParameter outputCmd = AudioParameter(); 2567 outputCmd.addInt(String8("set_id"), 0); 2568 mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString()); 2569 addOutput(mPrimaryOutput, outputDesc); 2570 } 2571 } 2572 2573 2574 mpClientInterface->setParameters(0, String8("test_cmd_policy=")); 2575 } 2576 } 2577 return false; 2578} 2579 2580void AudioPolicyManager::exit() 2581{ 2582 { 2583 AutoMutex _l(mLock); 2584 requestExit(); 2585 mWaitWorkCV.signal(); 2586 } 2587 requestExitAndWait(); 2588} 2589 2590int AudioPolicyManager::testOutputIndex(audio_io_handle_t output) 2591{ 2592 for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { 2593 if (output == mTestOutputs[i]) return i; 2594 } 2595 return 0; 2596} 2597#endif //AUDIO_POLICY_TEST 2598 2599// --- 2600 2601void AudioPolicyManager::addOutput(audio_io_handle_t output, sp<AudioOutputDescriptor> outputDesc) 2602{ 2603 outputDesc->mIoHandle = output; 2604 outputDesc->mId = nextUniqueId(); 2605 mOutputs.add(output, outputDesc); 2606 nextAudioPortGeneration(); 2607} 2608 2609void AudioPolicyManager::addInput(audio_io_handle_t input, sp<AudioInputDescriptor> inputDesc) 2610{ 2611 inputDesc->mIoHandle = input; 2612 inputDesc->mId = nextUniqueId(); 2613 mInputs.add(input, inputDesc); 2614 nextAudioPortGeneration(); 2615} 2616 2617String8 AudioPolicyManager::addressToParameter(audio_devices_t device, const String8 address) 2618{ 2619 if (device & AUDIO_DEVICE_OUT_ALL_A2DP) { 2620 return String8("a2dp_sink_address=")+address; 2621 } 2622 return address; 2623} 2624 2625status_t AudioPolicyManager::checkOutputsForDevice(audio_devices_t device, 2626 audio_policy_dev_state_t state, 2627 SortedVector<audio_io_handle_t>& outputs, 2628 const String8 address) 2629{ 2630 sp<AudioOutputDescriptor> desc; 2631 2632 if (state == AUDIO_POLICY_DEVICE_STATE_AVAILABLE) { 2633 // first list already open outputs that can be routed to this device 2634 for (size_t i = 0; i < mOutputs.size(); i++) { 2635 desc = mOutputs.valueAt(i); 2636 if (!desc->isDuplicated() && (desc->mProfile->mSupportedDevices.types() & device)) { 2637 ALOGV("checkOutputsForDevice(): adding opened output %d", mOutputs.keyAt(i)); 2638 outputs.add(mOutputs.keyAt(i)); 2639 } 2640 } 2641 // then look for output profiles that can be routed to this device 2642 SortedVector< sp<IOProfile> > profiles; 2643 for (size_t i = 0; i < mHwModules.size(); i++) 2644 { 2645 if (mHwModules[i]->mHandle == 0) { 2646 continue; 2647 } 2648 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 2649 { 2650 if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices.types() & device) { 2651 ALOGV("checkOutputsForDevice(): adding profile %zu from module %zu", j, i); 2652 profiles.add(mHwModules[i]->mOutputProfiles[j]); 2653 } 2654 } 2655 } 2656 2657 if (profiles.isEmpty() && outputs.isEmpty()) { 2658 ALOGW("checkOutputsForDevice(): No output available for device %04x", device); 2659 return BAD_VALUE; 2660 } 2661 2662 // open outputs for matching profiles if needed. Direct outputs are also opened to 2663 // query for dynamic parameters and will be closed later by setDeviceConnectionState() 2664 for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) { 2665 sp<IOProfile> profile = profiles[profile_index]; 2666 2667 // nothing to do if one output is already opened for this profile 2668 size_t j; 2669 for (j = 0; j < mOutputs.size(); j++) { 2670 desc = mOutputs.valueAt(j); 2671 if (!desc->isDuplicated() && desc->mProfile == profile) { 2672 break; 2673 } 2674 } 2675 if (j != mOutputs.size()) { 2676 continue; 2677 } 2678 2679 ALOGV("opening output for device %08x with params %s profile %p", 2680 device, address.string(), profile.get()); 2681 desc = new AudioOutputDescriptor(profile); 2682 desc->mDevice = device; 2683 audio_offload_info_t offloadInfo = AUDIO_INFO_INITIALIZER; 2684 offloadInfo.sample_rate = desc->mSamplingRate; 2685 offloadInfo.format = desc->mFormat; 2686 offloadInfo.channel_mask = desc->mChannelMask; 2687 2688 audio_io_handle_t output = mpClientInterface->openOutput(profile->mModule->mHandle, 2689 &desc->mDevice, 2690 &desc->mSamplingRate, 2691 &desc->mFormat, 2692 &desc->mChannelMask, 2693 &desc->mLatency, 2694 desc->mFlags, 2695 &offloadInfo); 2696 if (output != 0) { 2697 // Here is where the out_set_parameters() for card & device gets called 2698 if (!address.isEmpty()) { 2699 mpClientInterface->setParameters(output, addressToParameter(device, address)); 2700 } 2701 2702 // Here is where we step through and resolve any "dynamic" fields 2703 String8 reply; 2704 char *value; 2705 if (profile->mSamplingRates[0] == 0) { 2706 reply = mpClientInterface->getParameters(output, 2707 String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES)); 2708 ALOGV("checkOutputsForDevice() direct output sup sampling rates %s", 2709 reply.string()); 2710 value = strpbrk((char *)reply.string(), "="); 2711 if (value != NULL) { 2712 profile->loadSamplingRates(value + 1); 2713 } 2714 } 2715 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 2716 reply = mpClientInterface->getParameters(output, 2717 String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS)); 2718 ALOGV("checkOutputsForDevice() direct output sup formats %s", 2719 reply.string()); 2720 value = strpbrk((char *)reply.string(), "="); 2721 if (value != NULL) { 2722 profile->loadFormats(value + 1); 2723 } 2724 } 2725 if (profile->mChannelMasks[0] == 0) { 2726 reply = mpClientInterface->getParameters(output, 2727 String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS)); 2728 ALOGV("checkOutputsForDevice() direct output sup channel masks %s", 2729 reply.string()); 2730 value = strpbrk((char *)reply.string(), "="); 2731 if (value != NULL) { 2732 profile->loadOutChannels(value + 1); 2733 } 2734 } 2735 if (((profile->mSamplingRates[0] == 0) && 2736 (profile->mSamplingRates.size() < 2)) || 2737 ((profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) && 2738 (profile->mFormats.size() < 2)) || 2739 ((profile->mChannelMasks[0] == 0) && 2740 (profile->mChannelMasks.size() < 2))) { 2741 ALOGW("checkOutputsForDevice() direct output missing param"); 2742 mpClientInterface->closeOutput(output); 2743 output = 0; 2744 } else if (profile->mSamplingRates[0] == 0 || profile->mFormats[0] == 0 || 2745 profile->mChannelMasks[0] == 0) { 2746 mpClientInterface->closeOutput(output); 2747 desc->mSamplingRate = profile->pickSamplingRate(); 2748 desc->mFormat = profile->pickFormat(); 2749 desc->mChannelMask = profile->pickChannelMask(); 2750 offloadInfo.sample_rate = desc->mSamplingRate; 2751 offloadInfo.format = desc->mFormat; 2752 offloadInfo.channel_mask = desc->mChannelMask; 2753 output = mpClientInterface->openOutput( 2754 profile->mModule->mHandle, 2755 &desc->mDevice, 2756 &desc->mSamplingRate, 2757 &desc->mFormat, 2758 &desc->mChannelMask, 2759 &desc->mLatency, 2760 desc->mFlags, 2761 &offloadInfo); 2762 } 2763 2764 if (output != 0) { 2765 addOutput(output, desc); 2766 if ((desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) == 0) { 2767 audio_io_handle_t duplicatedOutput = 0; 2768 2769 // set initial stream volume for device 2770 applyStreamVolumes(output, device, 0, true); 2771 2772 //TODO: configure audio effect output stage here 2773 2774 // open a duplicating output thread for the new output and the primary output 2775 duplicatedOutput = mpClientInterface->openDuplicateOutput(output, 2776 mPrimaryOutput); 2777 if (duplicatedOutput != 0) { 2778 // add duplicated output descriptor 2779 sp<AudioOutputDescriptor> dupOutputDesc = new AudioOutputDescriptor(NULL); 2780 dupOutputDesc->mOutput1 = mOutputs.valueFor(mPrimaryOutput); 2781 dupOutputDesc->mOutput2 = mOutputs.valueFor(output); 2782 dupOutputDesc->mSamplingRate = desc->mSamplingRate; 2783 dupOutputDesc->mFormat = desc->mFormat; 2784 dupOutputDesc->mChannelMask = desc->mChannelMask; 2785 dupOutputDesc->mLatency = desc->mLatency; 2786 addOutput(duplicatedOutput, dupOutputDesc); 2787 applyStreamVolumes(duplicatedOutput, device, 0, true); 2788 } else { 2789 ALOGW("checkOutputsForDevice() could not open dup output for %d and %d", 2790 mPrimaryOutput, output); 2791 mpClientInterface->closeOutput(output); 2792 mOutputs.removeItem(output); 2793 nextAudioPortGeneration(); 2794 output = 0; 2795 } 2796 } 2797 } 2798 } 2799 if (output == 0) { 2800 ALOGW("checkOutputsForDevice() could not open output for device %x", device); 2801 profiles.removeAt(profile_index); 2802 profile_index--; 2803 } else { 2804 outputs.add(output); 2805 ALOGV("checkOutputsForDevice(): adding output %d", output); 2806 } 2807 } 2808 2809 if (profiles.isEmpty()) { 2810 ALOGW("checkOutputsForDevice(): No output available for device %04x", device); 2811 return BAD_VALUE; 2812 } 2813 } else { // Disconnect 2814 // check if one opened output is not needed any more after disconnecting one device 2815 for (size_t i = 0; i < mOutputs.size(); i++) { 2816 desc = mOutputs.valueAt(i); 2817 if (!desc->isDuplicated() && 2818 !(desc->mProfile->mSupportedDevices.types() & 2819 mAvailableOutputDevices.types())) { 2820 ALOGV("checkOutputsForDevice(): disconnecting adding output %d", mOutputs.keyAt(i)); 2821 outputs.add(mOutputs.keyAt(i)); 2822 } 2823 } 2824 // Clear any profiles associated with the disconnected device. 2825 for (size_t i = 0; i < mHwModules.size(); i++) 2826 { 2827 if (mHwModules[i]->mHandle == 0) { 2828 continue; 2829 } 2830 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 2831 { 2832 sp<IOProfile> profile = mHwModules[i]->mOutputProfiles[j]; 2833 if (profile->mSupportedDevices.types() & device) { 2834 ALOGV("checkOutputsForDevice(): " 2835 "clearing direct output profile %zu on module %zu", j, i); 2836 if (profile->mSamplingRates[0] == 0) { 2837 profile->mSamplingRates.clear(); 2838 profile->mSamplingRates.add(0); 2839 } 2840 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 2841 profile->mFormats.clear(); 2842 profile->mFormats.add(AUDIO_FORMAT_DEFAULT); 2843 } 2844 if (profile->mChannelMasks[0] == 0) { 2845 profile->mChannelMasks.clear(); 2846 profile->mChannelMasks.add(0); 2847 } 2848 } 2849 } 2850 } 2851 } 2852 return NO_ERROR; 2853} 2854 2855status_t AudioPolicyManager::checkInputsForDevice(audio_devices_t device, 2856 audio_policy_dev_state_t state, 2857 SortedVector<audio_io_handle_t>& inputs, 2858 const String8 address) 2859{ 2860 sp<AudioInputDescriptor> desc; 2861 if (state == AUDIO_POLICY_DEVICE_STATE_AVAILABLE) { 2862 // first list already open inputs that can be routed to this device 2863 for (size_t input_index = 0; input_index < mInputs.size(); input_index++) { 2864 desc = mInputs.valueAt(input_index); 2865 if (desc->mProfile->mSupportedDevices.types() & (device & ~AUDIO_DEVICE_BIT_IN)) { 2866 ALOGV("checkInputsForDevice(): adding opened input %d", mInputs.keyAt(input_index)); 2867 inputs.add(mInputs.keyAt(input_index)); 2868 } 2869 } 2870 2871 // then look for input profiles that can be routed to this device 2872 SortedVector< sp<IOProfile> > profiles; 2873 for (size_t module_idx = 0; module_idx < mHwModules.size(); module_idx++) 2874 { 2875 if (mHwModules[module_idx]->mHandle == 0) { 2876 continue; 2877 } 2878 for (size_t profile_index = 0; 2879 profile_index < mHwModules[module_idx]->mInputProfiles.size(); 2880 profile_index++) 2881 { 2882 if (mHwModules[module_idx]->mInputProfiles[profile_index]->mSupportedDevices.types() 2883 & (device & ~AUDIO_DEVICE_BIT_IN)) { 2884 ALOGV("checkInputsForDevice(): adding profile %zu from module %zu", 2885 profile_index, module_idx); 2886 profiles.add(mHwModules[module_idx]->mInputProfiles[profile_index]); 2887 } 2888 } 2889 } 2890 2891 if (profiles.isEmpty() && inputs.isEmpty()) { 2892 ALOGW("checkInputsForDevice(): No input available for device 0x%X", device); 2893 return BAD_VALUE; 2894 } 2895 2896 // open inputs for matching profiles if needed. Direct inputs are also opened to 2897 // query for dynamic parameters and will be closed later by setDeviceConnectionState() 2898 for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) { 2899 2900 sp<IOProfile> profile = profiles[profile_index]; 2901 // nothing to do if one input is already opened for this profile 2902 size_t input_index; 2903 for (input_index = 0; input_index < mInputs.size(); input_index++) { 2904 desc = mInputs.valueAt(input_index); 2905 if (desc->mProfile == profile) { 2906 break; 2907 } 2908 } 2909 if (input_index != mInputs.size()) { 2910 continue; 2911 } 2912 2913 ALOGV("opening input for device 0x%X with params %s", device, address.string()); 2914 desc = new AudioInputDescriptor(profile); 2915 desc->mDevice = device; 2916 2917 audio_io_handle_t input = mpClientInterface->openInput(profile->mModule->mHandle, 2918 &desc->mDevice, 2919 &desc->mSamplingRate, 2920 &desc->mFormat, 2921 &desc->mChannelMask, 2922 AUDIO_INPUT_FLAG_FAST /*FIXME*/); 2923 2924 if (input != 0) { 2925 if (!address.isEmpty()) { 2926 mpClientInterface->setParameters(input, addressToParameter(device, address)); 2927 } 2928 2929 // Here is where we step through and resolve any "dynamic" fields 2930 String8 reply; 2931 char *value; 2932 if (profile->mSamplingRates[0] == 0) { 2933 reply = mpClientInterface->getParameters(input, 2934 String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES)); 2935 ALOGV("checkInputsForDevice() direct input sup sampling rates %s", 2936 reply.string()); 2937 value = strpbrk((char *)reply.string(), "="); 2938 if (value != NULL) { 2939 profile->loadSamplingRates(value + 1); 2940 } 2941 } 2942 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 2943 reply = mpClientInterface->getParameters(input, 2944 String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS)); 2945 ALOGV("checkInputsForDevice() direct input sup formats %s", reply.string()); 2946 value = strpbrk((char *)reply.string(), "="); 2947 if (value != NULL) { 2948 profile->loadFormats(value + 1); 2949 } 2950 } 2951 if (profile->mChannelMasks[0] == 0) { 2952 reply = mpClientInterface->getParameters(input, 2953 String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS)); 2954 ALOGV("checkInputsForDevice() direct input sup channel masks %s", 2955 reply.string()); 2956 value = strpbrk((char *)reply.string(), "="); 2957 if (value != NULL) { 2958 profile->loadInChannels(value + 1); 2959 } 2960 } 2961 if (((profile->mSamplingRates[0] == 0) && (profile->mSamplingRates.size() < 2)) || 2962 ((profile->mFormats[0] == 0) && (profile->mFormats.size() < 2)) || 2963 ((profile->mChannelMasks[0] == 0) && (profile->mChannelMasks.size() < 2))) { 2964 ALOGW("checkInputsForDevice() direct input missing param"); 2965 mpClientInterface->closeInput(input); 2966 input = 0; 2967 } 2968 2969 if (input != 0) { 2970 addInput(input, desc); 2971 } 2972 } // endif input != 0 2973 2974 if (input == 0) { 2975 ALOGW("checkInputsForDevice() could not open input for device 0x%X", device); 2976 profiles.removeAt(profile_index); 2977 profile_index--; 2978 } else { 2979 inputs.add(input); 2980 ALOGV("checkInputsForDevice(): adding input %d", input); 2981 } 2982 } // end scan profiles 2983 2984 if (profiles.isEmpty()) { 2985 ALOGW("checkInputsForDevice(): No input available for device 0x%X", device); 2986 return BAD_VALUE; 2987 } 2988 } else { 2989 // Disconnect 2990 // check if one opened input is not needed any more after disconnecting one device 2991 for (size_t input_index = 0; input_index < mInputs.size(); input_index++) { 2992 desc = mInputs.valueAt(input_index); 2993 if (!(desc->mProfile->mSupportedDevices.types() & mAvailableInputDevices.types())) { 2994 ALOGV("checkInputsForDevice(): disconnecting adding input %d", 2995 mInputs.keyAt(input_index)); 2996 inputs.add(mInputs.keyAt(input_index)); 2997 } 2998 } 2999 // Clear any profiles associated with the disconnected device. 3000 for (size_t module_index = 0; module_index < mHwModules.size(); module_index++) { 3001 if (mHwModules[module_index]->mHandle == 0) { 3002 continue; 3003 } 3004 for (size_t profile_index = 0; 3005 profile_index < mHwModules[module_index]->mInputProfiles.size(); 3006 profile_index++) { 3007 sp<IOProfile> profile = mHwModules[module_index]->mInputProfiles[profile_index]; 3008 if (profile->mSupportedDevices.types() & device) { 3009 ALOGV("checkInputsForDevice(): clearing direct input profile %zu on module %zu", 3010 profile_index, module_index); 3011 if (profile->mSamplingRates[0] == 0) { 3012 profile->mSamplingRates.clear(); 3013 profile->mSamplingRates.add(0); 3014 } 3015 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 3016 profile->mFormats.clear(); 3017 profile->mFormats.add(AUDIO_FORMAT_DEFAULT); 3018 } 3019 if (profile->mChannelMasks[0] == 0) { 3020 profile->mChannelMasks.clear(); 3021 profile->mChannelMasks.add(0); 3022 } 3023 } 3024 } 3025 } 3026 } // end disconnect 3027 3028 return NO_ERROR; 3029} 3030 3031 3032void AudioPolicyManager::closeOutput(audio_io_handle_t output) 3033{ 3034 ALOGV("closeOutput(%d)", output); 3035 3036 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3037 if (outputDesc == NULL) { 3038 ALOGW("closeOutput() unknown output %d", output); 3039 return; 3040 } 3041 3042 // look for duplicated outputs connected to the output being removed. 3043 for (size_t i = 0; i < mOutputs.size(); i++) { 3044 sp<AudioOutputDescriptor> dupOutputDesc = mOutputs.valueAt(i); 3045 if (dupOutputDesc->isDuplicated() && 3046 (dupOutputDesc->mOutput1 == outputDesc || 3047 dupOutputDesc->mOutput2 == outputDesc)) { 3048 sp<AudioOutputDescriptor> outputDesc2; 3049 if (dupOutputDesc->mOutput1 == outputDesc) { 3050 outputDesc2 = dupOutputDesc->mOutput2; 3051 } else { 3052 outputDesc2 = dupOutputDesc->mOutput1; 3053 } 3054 // As all active tracks on duplicated output will be deleted, 3055 // and as they were also referenced on the other output, the reference 3056 // count for their stream type must be adjusted accordingly on 3057 // the other output. 3058 for (int j = 0; j < AUDIO_STREAM_CNT; j++) { 3059 int refCount = dupOutputDesc->mRefCount[j]; 3060 outputDesc2->changeRefCount((audio_stream_type_t)j,-refCount); 3061 } 3062 audio_io_handle_t duplicatedOutput = mOutputs.keyAt(i); 3063 ALOGV("closeOutput() closing also duplicated output %d", duplicatedOutput); 3064 3065 mpClientInterface->closeOutput(duplicatedOutput); 3066 mOutputs.removeItem(duplicatedOutput); 3067 } 3068 } 3069 3070 AudioParameter param; 3071 param.add(String8("closing"), String8("true")); 3072 mpClientInterface->setParameters(output, param.toString()); 3073 3074 mpClientInterface->closeOutput(output); 3075 mOutputs.removeItem(output); 3076 mPreviousOutputs = mOutputs; 3077 nextAudioPortGeneration(); 3078} 3079 3080SortedVector<audio_io_handle_t> AudioPolicyManager::getOutputsForDevice(audio_devices_t device, 3081 DefaultKeyedVector<audio_io_handle_t, sp<AudioOutputDescriptor> > openOutputs) 3082{ 3083 SortedVector<audio_io_handle_t> outputs; 3084 3085 ALOGVV("getOutputsForDevice() device %04x", device); 3086 for (size_t i = 0; i < openOutputs.size(); i++) { 3087 ALOGVV("output %d isDuplicated=%d device=%04x", 3088 i, openOutputs.valueAt(i)->isDuplicated(), openOutputs.valueAt(i)->supportedDevices()); 3089 if ((device & openOutputs.valueAt(i)->supportedDevices()) == device) { 3090 ALOGVV("getOutputsForDevice() found output %d", openOutputs.keyAt(i)); 3091 outputs.add(openOutputs.keyAt(i)); 3092 } 3093 } 3094 return outputs; 3095} 3096 3097bool AudioPolicyManager::vectorsEqual(SortedVector<audio_io_handle_t>& outputs1, 3098 SortedVector<audio_io_handle_t>& outputs2) 3099{ 3100 if (outputs1.size() != outputs2.size()) { 3101 return false; 3102 } 3103 for (size_t i = 0; i < outputs1.size(); i++) { 3104 if (outputs1[i] != outputs2[i]) { 3105 return false; 3106 } 3107 } 3108 return true; 3109} 3110 3111void AudioPolicyManager::checkOutputForStrategy(routing_strategy strategy) 3112{ 3113 audio_devices_t oldDevice = getDeviceForStrategy(strategy, true /*fromCache*/); 3114 audio_devices_t newDevice = getDeviceForStrategy(strategy, false /*fromCache*/); 3115 SortedVector<audio_io_handle_t> srcOutputs = getOutputsForDevice(oldDevice, mPreviousOutputs); 3116 SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(newDevice, mOutputs); 3117 3118 if (!vectorsEqual(srcOutputs,dstOutputs)) { 3119 ALOGV("checkOutputForStrategy() strategy %d, moving from output %d to output %d", 3120 strategy, srcOutputs[0], dstOutputs[0]); 3121 // mute strategy while moving tracks from one output to another 3122 for (size_t i = 0; i < srcOutputs.size(); i++) { 3123 sp<AudioOutputDescriptor> desc = mOutputs.valueFor(srcOutputs[i]); 3124 if (desc->isStrategyActive(strategy)) { 3125 setStrategyMute(strategy, true, srcOutputs[i]); 3126 setStrategyMute(strategy, false, srcOutputs[i], MUTE_TIME_MS, newDevice); 3127 } 3128 } 3129 3130 // Move effects associated to this strategy from previous output to new output 3131 if (strategy == STRATEGY_MEDIA) { 3132 audio_io_handle_t fxOutput = selectOutputForEffects(dstOutputs); 3133 SortedVector<audio_io_handle_t> moved; 3134 for (size_t i = 0; i < mEffects.size(); i++) { 3135 sp<EffectDescriptor> effectDesc = mEffects.valueAt(i); 3136 if (effectDesc->mSession == AUDIO_SESSION_OUTPUT_MIX && 3137 effectDesc->mIo != fxOutput) { 3138 if (moved.indexOf(effectDesc->mIo) < 0) { 3139 ALOGV("checkOutputForStrategy() moving effect %d to output %d", 3140 mEffects.keyAt(i), fxOutput); 3141 mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, effectDesc->mIo, 3142 fxOutput); 3143 moved.add(effectDesc->mIo); 3144 } 3145 effectDesc->mIo = fxOutput; 3146 } 3147 } 3148 } 3149 // Move tracks associated to this strategy from previous output to new output 3150 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 3151 if (getStrategy((audio_stream_type_t)i) == strategy) { 3152 mpClientInterface->invalidateStream((audio_stream_type_t)i); 3153 } 3154 } 3155 } 3156} 3157 3158void AudioPolicyManager::checkOutputForAllStrategies() 3159{ 3160 checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE); 3161 checkOutputForStrategy(STRATEGY_PHONE); 3162 checkOutputForStrategy(STRATEGY_SONIFICATION); 3163 checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL); 3164 checkOutputForStrategy(STRATEGY_MEDIA); 3165 checkOutputForStrategy(STRATEGY_DTMF); 3166} 3167 3168audio_io_handle_t AudioPolicyManager::getA2dpOutput() 3169{ 3170 for (size_t i = 0; i < mOutputs.size(); i++) { 3171 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(i); 3172 if (!outputDesc->isDuplicated() && outputDesc->device() & AUDIO_DEVICE_OUT_ALL_A2DP) { 3173 return mOutputs.keyAt(i); 3174 } 3175 } 3176 3177 return 0; 3178} 3179 3180void AudioPolicyManager::checkA2dpSuspend() 3181{ 3182 audio_io_handle_t a2dpOutput = getA2dpOutput(); 3183 if (a2dpOutput == 0) { 3184 mA2dpSuspended = false; 3185 return; 3186 } 3187 3188 bool isScoConnected = 3189 (mAvailableInputDevices.types() & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) != 0; 3190 // suspend A2DP output if: 3191 // (NOT already suspended) && 3192 // ((SCO device is connected && 3193 // (forced usage for communication || for record is SCO))) || 3194 // (phone state is ringing || in call) 3195 // 3196 // restore A2DP output if: 3197 // (Already suspended) && 3198 // ((SCO device is NOT connected || 3199 // (forced usage NOT for communication && NOT for record is SCO))) && 3200 // (phone state is NOT ringing && NOT in call) 3201 // 3202 if (mA2dpSuspended) { 3203 if ((!isScoConnected || 3204 ((mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] != AUDIO_POLICY_FORCE_BT_SCO) && 3205 (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] != AUDIO_POLICY_FORCE_BT_SCO))) && 3206 ((mPhoneState != AUDIO_MODE_IN_CALL) && 3207 (mPhoneState != AUDIO_MODE_RINGTONE))) { 3208 3209 mpClientInterface->restoreOutput(a2dpOutput); 3210 mA2dpSuspended = false; 3211 } 3212 } else { 3213 if ((isScoConnected && 3214 ((mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] == AUDIO_POLICY_FORCE_BT_SCO) || 3215 (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] == AUDIO_POLICY_FORCE_BT_SCO))) || 3216 ((mPhoneState == AUDIO_MODE_IN_CALL) || 3217 (mPhoneState == AUDIO_MODE_RINGTONE))) { 3218 3219 mpClientInterface->suspendOutput(a2dpOutput); 3220 mA2dpSuspended = true; 3221 } 3222 } 3223} 3224 3225audio_devices_t AudioPolicyManager::getNewOutputDevice(audio_io_handle_t output, bool fromCache) 3226{ 3227 audio_devices_t device = AUDIO_DEVICE_NONE; 3228 3229 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3230 3231 ssize_t index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 3232 if (index >= 0) { 3233 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3234 if (patchDesc->mUid != mUidCached) { 3235 ALOGV("getNewOutputDevice() device %08x forced by patch %d", 3236 outputDesc->device(), outputDesc->mPatchHandle); 3237 return outputDesc->device(); 3238 } 3239 } 3240 3241 // check the following by order of priority to request a routing change if necessary: 3242 // 1: the strategy enforced audible is active on the output: 3243 // use device for strategy enforced audible 3244 // 2: we are in call or the strategy phone is active on the output: 3245 // use device for strategy phone 3246 // 3: the strategy sonification is active on the output: 3247 // use device for strategy sonification 3248 // 4: the strategy "respectful" sonification is active on the output: 3249 // use device for strategy "respectful" sonification 3250 // 5: the strategy media is active on the output: 3251 // use device for strategy media 3252 // 6: the strategy DTMF is active on the output: 3253 // use device for strategy DTMF 3254 if (outputDesc->isStrategyActive(STRATEGY_ENFORCED_AUDIBLE)) { 3255 device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache); 3256 } else if (isInCall() || 3257 outputDesc->isStrategyActive(STRATEGY_PHONE)) { 3258 device = getDeviceForStrategy(STRATEGY_PHONE, fromCache); 3259 } else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION)) { 3260 device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache); 3261 } else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION_RESPECTFUL)) { 3262 device = getDeviceForStrategy(STRATEGY_SONIFICATION_RESPECTFUL, fromCache); 3263 } else if (outputDesc->isStrategyActive(STRATEGY_MEDIA)) { 3264 device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache); 3265 } else if (outputDesc->isStrategyActive(STRATEGY_DTMF)) { 3266 device = getDeviceForStrategy(STRATEGY_DTMF, fromCache); 3267 } 3268 3269 ALOGV("getNewOutputDevice() selected device %x", device); 3270 return device; 3271} 3272 3273audio_devices_t AudioPolicyManager::getNewInputDevice(audio_io_handle_t input) 3274{ 3275 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 3276 3277 ssize_t index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 3278 if (index >= 0) { 3279 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3280 if (patchDesc->mUid != mUidCached) { 3281 ALOGV("getNewInputDevice() device %08x forced by patch %d", 3282 inputDesc->mDevice, inputDesc->mPatchHandle); 3283 return inputDesc->mDevice; 3284 } 3285 } 3286 3287 audio_devices_t device = getDeviceForInputSource(inputDesc->mInputSource); 3288 3289 ALOGV("getNewInputDevice() selected device %x", device); 3290 return device; 3291} 3292 3293uint32_t AudioPolicyManager::getStrategyForStream(audio_stream_type_t stream) { 3294 return (uint32_t)getStrategy(stream); 3295} 3296 3297audio_devices_t AudioPolicyManager::getDevicesForStream(audio_stream_type_t stream) { 3298 // By checking the range of stream before calling getStrategy, we avoid 3299 // getStrategy's behavior for invalid streams. getStrategy would do a ALOGE 3300 // and then return STRATEGY_MEDIA, but we want to return the empty set. 3301 if (stream < (audio_stream_type_t) 0 || stream >= AUDIO_STREAM_CNT) { 3302 return AUDIO_DEVICE_NONE; 3303 } 3304 audio_devices_t devices; 3305 AudioPolicyManager::routing_strategy strategy = getStrategy(stream); 3306 devices = getDeviceForStrategy(strategy, true /*fromCache*/); 3307 SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(devices, mOutputs); 3308 for (size_t i = 0; i < outputs.size(); i++) { 3309 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(outputs[i]); 3310 if (outputDesc->isStrategyActive(strategy)) { 3311 devices = outputDesc->device(); 3312 break; 3313 } 3314 } 3315 return devices; 3316} 3317 3318AudioPolicyManager::routing_strategy AudioPolicyManager::getStrategy( 3319 audio_stream_type_t stream) { 3320 // stream to strategy mapping 3321 switch (stream) { 3322 case AUDIO_STREAM_VOICE_CALL: 3323 case AUDIO_STREAM_BLUETOOTH_SCO: 3324 return STRATEGY_PHONE; 3325 case AUDIO_STREAM_RING: 3326 case AUDIO_STREAM_ALARM: 3327 return STRATEGY_SONIFICATION; 3328 case AUDIO_STREAM_NOTIFICATION: 3329 return STRATEGY_SONIFICATION_RESPECTFUL; 3330 case AUDIO_STREAM_DTMF: 3331 return STRATEGY_DTMF; 3332 default: 3333 ALOGE("unknown stream type"); 3334 case AUDIO_STREAM_SYSTEM: 3335 // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs 3336 // while key clicks are played produces a poor result 3337 case AUDIO_STREAM_TTS: 3338 case AUDIO_STREAM_MUSIC: 3339 return STRATEGY_MEDIA; 3340 case AUDIO_STREAM_ENFORCED_AUDIBLE: 3341 return STRATEGY_ENFORCED_AUDIBLE; 3342 } 3343} 3344 3345uint32_t AudioPolicyManager::getStrategyForAttr(const audio_attributes_t *attr) { 3346 // flags to strategy mapping 3347 if ((attr->flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) { 3348 return (uint32_t) STRATEGY_ENFORCED_AUDIBLE; 3349 } 3350 3351 // usage to strategy mapping 3352 switch (attr->usage) { 3353 case AUDIO_USAGE_MEDIA: 3354 case AUDIO_USAGE_GAME: 3355 case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY: 3356 case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: 3357 case AUDIO_USAGE_ASSISTANCE_SONIFICATION: 3358 return (uint32_t) STRATEGY_MEDIA; 3359 3360 case AUDIO_USAGE_VOICE_COMMUNICATION: 3361 return (uint32_t) STRATEGY_PHONE; 3362 3363 case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING: 3364 return (uint32_t) STRATEGY_DTMF; 3365 3366 case AUDIO_USAGE_ALARM: 3367 case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE: 3368 return (uint32_t) STRATEGY_SONIFICATION; 3369 3370 case AUDIO_USAGE_NOTIFICATION: 3371 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST: 3372 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT: 3373 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED: 3374 case AUDIO_USAGE_NOTIFICATION_EVENT: 3375 return (uint32_t) STRATEGY_SONIFICATION_RESPECTFUL; 3376 3377 case AUDIO_USAGE_UNKNOWN: 3378 default: 3379 return (uint32_t) STRATEGY_MEDIA; 3380 } 3381} 3382 3383void AudioPolicyManager::handleNotificationRoutingForStream(audio_stream_type_t stream) { 3384 switch(stream) { 3385 case AUDIO_STREAM_MUSIC: 3386 checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL); 3387 updateDevicesAndOutputs(); 3388 break; 3389 default: 3390 break; 3391 } 3392} 3393 3394audio_devices_t AudioPolicyManager::getDeviceForStrategy(routing_strategy strategy, 3395 bool fromCache) 3396{ 3397 uint32_t device = AUDIO_DEVICE_NONE; 3398 3399 if (fromCache) { 3400 ALOGVV("getDeviceForStrategy() from cache strategy %d, device %x", 3401 strategy, mDeviceForStrategy[strategy]); 3402 return mDeviceForStrategy[strategy]; 3403 } 3404 audio_devices_t availableOutputDeviceTypes = mAvailableOutputDevices.types(); 3405 switch (strategy) { 3406 3407 case STRATEGY_SONIFICATION_RESPECTFUL: 3408 if (isInCall()) { 3409 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 3410 } else if (isStreamActiveRemotely(AUDIO_STREAM_MUSIC, 3411 SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) { 3412 // while media is playing on a remote device, use the the sonification behavior. 3413 // Note that we test this usecase before testing if media is playing because 3414 // the isStreamActive() method only informs about the activity of a stream, not 3415 // if it's for local playback. Note also that we use the same delay between both tests 3416 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 3417 } else if (isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) { 3418 // while media is playing (or has recently played), use the same device 3419 device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/); 3420 } else { 3421 // when media is not playing anymore, fall back on the sonification behavior 3422 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 3423 } 3424 3425 break; 3426 3427 case STRATEGY_DTMF: 3428 if (!isInCall()) { 3429 // when off call, DTMF strategy follows the same rules as MEDIA strategy 3430 device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/); 3431 break; 3432 } 3433 // when in call, DTMF and PHONE strategies follow the same rules 3434 // FALL THROUGH 3435 3436 case STRATEGY_PHONE: 3437 // for phone strategy, we first consider the forced use and then the available devices by order 3438 // of priority 3439 switch (mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]) { 3440 case AUDIO_POLICY_FORCE_BT_SCO: 3441 if (!isInCall() || strategy != STRATEGY_DTMF) { 3442 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT; 3443 if (device) break; 3444 } 3445 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET; 3446 if (device) break; 3447 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO; 3448 if (device) break; 3449 // if SCO device is requested but no SCO device is available, fall back to default case 3450 // FALL THROUGH 3451 3452 default: // FORCE_NONE 3453 // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP 3454 if (!isInCall() && 3455 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 3456 (getA2dpOutput() != 0) && !mA2dpSuspended) { 3457 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP; 3458 if (device) break; 3459 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; 3460 if (device) break; 3461 } 3462 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADPHONE; 3463 if (device) break; 3464 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADSET; 3465 if (device) break; 3466 if (mPhoneState != AUDIO_MODE_IN_CALL) { 3467 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 3468 if (device) break; 3469 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 3470 if (device) break; 3471 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 3472 if (device) break; 3473 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 3474 if (device) break; 3475 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 3476 if (device) break; 3477 } 3478 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_EARPIECE; 3479 if (device) break; 3480 device = mDefaultOutputDevice->mDeviceType; 3481 if (device == AUDIO_DEVICE_NONE) { 3482 ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE"); 3483 } 3484 break; 3485 3486 case AUDIO_POLICY_FORCE_SPEAKER: 3487 // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to 3488 // A2DP speaker when forcing to speaker output 3489 if (!isInCall() && 3490 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 3491 (getA2dpOutput() != 0) && !mA2dpSuspended) { 3492 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; 3493 if (device) break; 3494 } 3495 if (mPhoneState != AUDIO_MODE_IN_CALL) { 3496 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 3497 if (device) break; 3498 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 3499 if (device) break; 3500 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 3501 if (device) break; 3502 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 3503 if (device) break; 3504 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 3505 if (device) break; 3506 } 3507 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 3508 if (device) break; 3509 device = mDefaultOutputDevice->mDeviceType; 3510 if (device == AUDIO_DEVICE_NONE) { 3511 ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE, FORCE_SPEAKER"); 3512 } 3513 break; 3514 } 3515 break; 3516 3517 case STRATEGY_SONIFICATION: 3518 3519 // If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by 3520 // handleIncallSonification(). 3521 if (isInCall()) { 3522 device = getDeviceForStrategy(STRATEGY_PHONE, false /*fromCache*/); 3523 break; 3524 } 3525 // FALL THROUGH 3526 3527 case STRATEGY_ENFORCED_AUDIBLE: 3528 // strategy STRATEGY_ENFORCED_AUDIBLE uses same routing policy as STRATEGY_SONIFICATION 3529 // except: 3530 // - when in call where it doesn't default to STRATEGY_PHONE behavior 3531 // - in countries where not enforced in which case it follows STRATEGY_MEDIA 3532 3533 if ((strategy == STRATEGY_SONIFICATION) || 3534 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED)) { 3535 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 3536 if (device == AUDIO_DEVICE_NONE) { 3537 ALOGE("getDeviceForStrategy() speaker device not found for STRATEGY_SONIFICATION"); 3538 } 3539 } 3540 // The second device used for sonification is the same as the device used by media strategy 3541 // FALL THROUGH 3542 3543 case STRATEGY_MEDIA: { 3544 uint32_t device2 = AUDIO_DEVICE_NONE; 3545 if (strategy != STRATEGY_SONIFICATION) { 3546 // no sonification on remote submix (e.g. WFD) 3547 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_REMOTE_SUBMIX; 3548 } 3549 if ((device2 == AUDIO_DEVICE_NONE) && 3550 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 3551 (getA2dpOutput() != 0) && !mA2dpSuspended) { 3552 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP; 3553 if (device2 == AUDIO_DEVICE_NONE) { 3554 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; 3555 } 3556 if (device2 == AUDIO_DEVICE_NONE) { 3557 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; 3558 } 3559 } 3560 if (device2 == AUDIO_DEVICE_NONE) { 3561 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADPHONE; 3562 } 3563 if (device2 == AUDIO_DEVICE_NONE) { 3564 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADSET; 3565 } 3566 if (device2 == AUDIO_DEVICE_NONE) { 3567 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 3568 } 3569 if (device2 == AUDIO_DEVICE_NONE) { 3570 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 3571 } 3572 if (device2 == AUDIO_DEVICE_NONE) { 3573 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 3574 } 3575 if ((device2 == AUDIO_DEVICE_NONE) && (strategy != STRATEGY_SONIFICATION)) { 3576 // no sonification on aux digital (e.g. HDMI) 3577 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 3578 } 3579 if ((device2 == AUDIO_DEVICE_NONE) && 3580 (mForceUse[AUDIO_POLICY_FORCE_FOR_DOCK] == AUDIO_POLICY_FORCE_ANALOG_DOCK)) { 3581 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 3582 } 3583 if (device2 == AUDIO_DEVICE_NONE) { 3584 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 3585 } 3586 int device3 = AUDIO_DEVICE_NONE; 3587 if (strategy == STRATEGY_MEDIA) { 3588 // ARC, SPDIF and AUX_LINE can co-exist with others. 3589 device3 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_HDMI_ARC; 3590 device3 |= (availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPDIF); 3591 device3 |= (availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_LINE); 3592 } 3593 3594 device2 |= device3; 3595 // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or 3596 // STRATEGY_ENFORCED_AUDIBLE, AUDIO_DEVICE_NONE otherwise 3597 device |= device2; 3598 3599 // If hdmi system audio mode is on, remove speaker out of output list. 3600 if ((strategy == STRATEGY_MEDIA) && 3601 (mForceUse[AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO] == 3602 AUDIO_POLICY_FORCE_HDMI_SYSTEM_AUDIO_ENFORCED)) { 3603 device &= ~AUDIO_DEVICE_OUT_SPEAKER; 3604 } 3605 3606 if (device) break; 3607 device = mDefaultOutputDevice->mDeviceType; 3608 if (device == AUDIO_DEVICE_NONE) { 3609 ALOGE("getDeviceForStrategy() no device found for STRATEGY_MEDIA"); 3610 } 3611 } break; 3612 3613 default: 3614 ALOGW("getDeviceForStrategy() unknown strategy: %d", strategy); 3615 break; 3616 } 3617 3618 ALOGVV("getDeviceForStrategy() strategy %d, device %x", strategy, device); 3619 return device; 3620} 3621 3622void AudioPolicyManager::updateDevicesAndOutputs() 3623{ 3624 for (int i = 0; i < NUM_STRATEGIES; i++) { 3625 mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/); 3626 } 3627 mPreviousOutputs = mOutputs; 3628} 3629 3630uint32_t AudioPolicyManager::checkDeviceMuteStrategies(sp<AudioOutputDescriptor> outputDesc, 3631 audio_devices_t prevDevice, 3632 uint32_t delayMs) 3633{ 3634 // mute/unmute strategies using an incompatible device combination 3635 // if muting, wait for the audio in pcm buffer to be drained before proceeding 3636 // if unmuting, unmute only after the specified delay 3637 if (outputDesc->isDuplicated()) { 3638 return 0; 3639 } 3640 3641 uint32_t muteWaitMs = 0; 3642 audio_devices_t device = outputDesc->device(); 3643 bool shouldMute = outputDesc->isActive() && (popcount(device) >= 2); 3644 3645 for (size_t i = 0; i < NUM_STRATEGIES; i++) { 3646 audio_devices_t curDevice = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/); 3647 bool mute = shouldMute && (curDevice & device) && (curDevice != device); 3648 bool doMute = false; 3649 3650 if (mute && !outputDesc->mStrategyMutedByDevice[i]) { 3651 doMute = true; 3652 outputDesc->mStrategyMutedByDevice[i] = true; 3653 } else if (!mute && outputDesc->mStrategyMutedByDevice[i]){ 3654 doMute = true; 3655 outputDesc->mStrategyMutedByDevice[i] = false; 3656 } 3657 if (doMute) { 3658 for (size_t j = 0; j < mOutputs.size(); j++) { 3659 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(j); 3660 // skip output if it does not share any device with current output 3661 if ((desc->supportedDevices() & outputDesc->supportedDevices()) 3662 == AUDIO_DEVICE_NONE) { 3663 continue; 3664 } 3665 audio_io_handle_t curOutput = mOutputs.keyAt(j); 3666 ALOGVV("checkDeviceMuteStrategies() %s strategy %d (curDevice %04x) on output %d", 3667 mute ? "muting" : "unmuting", i, curDevice, curOutput); 3668 setStrategyMute((routing_strategy)i, mute, curOutput, mute ? 0 : delayMs); 3669 if (desc->isStrategyActive((routing_strategy)i)) { 3670 if (mute) { 3671 // FIXME: should not need to double latency if volume could be applied 3672 // immediately by the audioflinger mixer. We must account for the delay 3673 // between now and the next time the audioflinger thread for this output 3674 // will process a buffer (which corresponds to one buffer size, 3675 // usually 1/2 or 1/4 of the latency). 3676 if (muteWaitMs < desc->latency() * 2) { 3677 muteWaitMs = desc->latency() * 2; 3678 } 3679 } 3680 } 3681 } 3682 } 3683 } 3684 3685 // temporary mute output if device selection changes to avoid volume bursts due to 3686 // different per device volumes 3687 if (outputDesc->isActive() && (device != prevDevice)) { 3688 if (muteWaitMs < outputDesc->latency() * 2) { 3689 muteWaitMs = outputDesc->latency() * 2; 3690 } 3691 for (size_t i = 0; i < NUM_STRATEGIES; i++) { 3692 if (outputDesc->isStrategyActive((routing_strategy)i)) { 3693 setStrategyMute((routing_strategy)i, true, outputDesc->mIoHandle); 3694 // do tempMute unmute after twice the mute wait time 3695 setStrategyMute((routing_strategy)i, false, outputDesc->mIoHandle, 3696 muteWaitMs *2, device); 3697 } 3698 } 3699 } 3700 3701 // wait for the PCM output buffers to empty before proceeding with the rest of the command 3702 if (muteWaitMs > delayMs) { 3703 muteWaitMs -= delayMs; 3704 usleep(muteWaitMs * 1000); 3705 return muteWaitMs; 3706 } 3707 return 0; 3708} 3709 3710uint32_t AudioPolicyManager::setOutputDevice(audio_io_handle_t output, 3711 audio_devices_t device, 3712 bool force, 3713 int delayMs, 3714 audio_patch_handle_t *patchHandle) 3715{ 3716 ALOGV("setOutputDevice() output %d device %04x delayMs %d", output, device, delayMs); 3717 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3718 AudioParameter param; 3719 uint32_t muteWaitMs; 3720 3721 if (outputDesc->isDuplicated()) { 3722 muteWaitMs = setOutputDevice(outputDesc->mOutput1->mIoHandle, device, force, delayMs); 3723 muteWaitMs += setOutputDevice(outputDesc->mOutput2->mIoHandle, device, force, delayMs); 3724 return muteWaitMs; 3725 } 3726 // no need to proceed if new device is not AUDIO_DEVICE_NONE and not supported by current 3727 // output profile 3728 if ((device != AUDIO_DEVICE_NONE) && 3729 ((device & outputDesc->mProfile->mSupportedDevices.types()) == 0)) { 3730 return 0; 3731 } 3732 3733 // filter devices according to output selected 3734 device = (audio_devices_t)(device & outputDesc->mProfile->mSupportedDevices.types()); 3735 3736 audio_devices_t prevDevice = outputDesc->mDevice; 3737 3738 ALOGV("setOutputDevice() prevDevice %04x", prevDevice); 3739 3740 if (device != AUDIO_DEVICE_NONE) { 3741 outputDesc->mDevice = device; 3742 } 3743 muteWaitMs = checkDeviceMuteStrategies(outputDesc, prevDevice, delayMs); 3744 3745 // Do not change the routing if: 3746 // - the requested device is AUDIO_DEVICE_NONE 3747 // - the requested device is the same as current device and force is not specified. 3748 // Doing this check here allows the caller to call setOutputDevice() without conditions 3749 if ((device == AUDIO_DEVICE_NONE || device == prevDevice) && !force) { 3750 ALOGV("setOutputDevice() setting same device %04x or null device for output %d", device, output); 3751 return muteWaitMs; 3752 } 3753 3754 ALOGV("setOutputDevice() changing device"); 3755 3756 // do the routing 3757 if (device == AUDIO_DEVICE_NONE) { 3758 resetOutputDevice(output, delayMs, NULL); 3759 } else { 3760 DeviceVector deviceList = mAvailableOutputDevices.getDevicesFromType(device); 3761 if (!deviceList.isEmpty()) { 3762 struct audio_patch patch; 3763 outputDesc->toAudioPortConfig(&patch.sources[0]); 3764 patch.num_sources = 1; 3765 patch.num_sinks = 0; 3766 for (size_t i = 0; i < deviceList.size() && i < AUDIO_PATCH_PORTS_MAX; i++) { 3767 deviceList.itemAt(i)->toAudioPortConfig(&patch.sinks[i]); 3768 patch.num_sinks++; 3769 } 3770 ssize_t index; 3771 if (patchHandle && *patchHandle != AUDIO_PATCH_HANDLE_NONE) { 3772 index = mAudioPatches.indexOfKey(*patchHandle); 3773 } else { 3774 index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 3775 } 3776 sp< AudioPatch> patchDesc; 3777 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 3778 if (index >= 0) { 3779 patchDesc = mAudioPatches.valueAt(index); 3780 afPatchHandle = patchDesc->mAfPatchHandle; 3781 } 3782 3783 status_t status = mpClientInterface->createAudioPatch(&patch, 3784 &afPatchHandle, 3785 delayMs); 3786 ALOGV("setOutputDevice() createAudioPatch returned %d patchHandle %d" 3787 "num_sources %d num_sinks %d", 3788 status, afPatchHandle, patch.num_sources, patch.num_sinks); 3789 if (status == NO_ERROR) { 3790 if (index < 0) { 3791 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 3792 &patch, mUidCached); 3793 addAudioPatch(patchDesc->mHandle, patchDesc); 3794 } else { 3795 patchDesc->mPatch = patch; 3796 } 3797 patchDesc->mAfPatchHandle = afPatchHandle; 3798 patchDesc->mUid = mUidCached; 3799 if (patchHandle) { 3800 *patchHandle = patchDesc->mHandle; 3801 } 3802 outputDesc->mPatchHandle = patchDesc->mHandle; 3803 nextAudioPortGeneration(); 3804 mpClientInterface->onAudioPatchListUpdate(); 3805 } 3806 } 3807 } 3808 3809 // update stream volumes according to new device 3810 applyStreamVolumes(output, device, delayMs); 3811 3812 return muteWaitMs; 3813} 3814 3815status_t AudioPolicyManager::resetOutputDevice(audio_io_handle_t output, 3816 int delayMs, 3817 audio_patch_handle_t *patchHandle) 3818{ 3819 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3820 ssize_t index; 3821 if (patchHandle) { 3822 index = mAudioPatches.indexOfKey(*patchHandle); 3823 } else { 3824 index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 3825 } 3826 if (index < 0) { 3827 return INVALID_OPERATION; 3828 } 3829 sp< AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3830 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, delayMs); 3831 ALOGV("resetOutputDevice() releaseAudioPatch returned %d", status); 3832 outputDesc->mPatchHandle = 0; 3833 removeAudioPatch(patchDesc->mHandle); 3834 nextAudioPortGeneration(); 3835 mpClientInterface->onAudioPatchListUpdate(); 3836 return status; 3837} 3838 3839status_t AudioPolicyManager::setInputDevice(audio_io_handle_t input, 3840 audio_devices_t device, 3841 bool force, 3842 audio_patch_handle_t *patchHandle) 3843{ 3844 status_t status = NO_ERROR; 3845 3846 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 3847 if ((device != AUDIO_DEVICE_NONE) && ((device != inputDesc->mDevice) || force)) { 3848 inputDesc->mDevice = device; 3849 3850 DeviceVector deviceList = mAvailableInputDevices.getDevicesFromType(device); 3851 if (!deviceList.isEmpty()) { 3852 struct audio_patch patch; 3853 inputDesc->toAudioPortConfig(&patch.sinks[0]); 3854 // AUDIO_SOURCE_HOTWORD is for internal use only: 3855 // handled as AUDIO_SOURCE_VOICE_RECOGNITION by the audio HAL 3856 if (patch.sinks[0].ext.mix.usecase.source == AUDIO_SOURCE_HOTWORD) { 3857 patch.sinks[0].ext.mix.usecase.source = AUDIO_SOURCE_VOICE_RECOGNITION; 3858 } 3859 patch.num_sinks = 1; 3860 //only one input device for now 3861 deviceList.itemAt(0)->toAudioPortConfig(&patch.sources[0]); 3862 patch.num_sources = 1; 3863 ssize_t index; 3864 if (patchHandle && *patchHandle != AUDIO_PATCH_HANDLE_NONE) { 3865 index = mAudioPatches.indexOfKey(*patchHandle); 3866 } else { 3867 index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 3868 } 3869 sp< AudioPatch> patchDesc; 3870 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 3871 if (index >= 0) { 3872 patchDesc = mAudioPatches.valueAt(index); 3873 afPatchHandle = patchDesc->mAfPatchHandle; 3874 } 3875 3876 status_t status = mpClientInterface->createAudioPatch(&patch, 3877 &afPatchHandle, 3878 0); 3879 ALOGV("setInputDevice() createAudioPatch returned %d patchHandle %d", 3880 status, afPatchHandle); 3881 if (status == NO_ERROR) { 3882 if (index < 0) { 3883 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 3884 &patch, mUidCached); 3885 addAudioPatch(patchDesc->mHandle, patchDesc); 3886 } else { 3887 patchDesc->mPatch = patch; 3888 } 3889 patchDesc->mAfPatchHandle = afPatchHandle; 3890 patchDesc->mUid = mUidCached; 3891 if (patchHandle) { 3892 *patchHandle = patchDesc->mHandle; 3893 } 3894 inputDesc->mPatchHandle = patchDesc->mHandle; 3895 nextAudioPortGeneration(); 3896 mpClientInterface->onAudioPatchListUpdate(); 3897 } 3898 } 3899 } 3900 return status; 3901} 3902 3903status_t AudioPolicyManager::resetInputDevice(audio_io_handle_t input, 3904 audio_patch_handle_t *patchHandle) 3905{ 3906 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 3907 ssize_t index; 3908 if (patchHandle) { 3909 index = mAudioPatches.indexOfKey(*patchHandle); 3910 } else { 3911 index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 3912 } 3913 if (index < 0) { 3914 return INVALID_OPERATION; 3915 } 3916 sp< AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3917 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 3918 ALOGV("resetInputDevice() releaseAudioPatch returned %d", status); 3919 inputDesc->mPatchHandle = 0; 3920 removeAudioPatch(patchDesc->mHandle); 3921 nextAudioPortGeneration(); 3922 mpClientInterface->onAudioPatchListUpdate(); 3923 return status; 3924} 3925 3926sp<AudioPolicyManager::IOProfile> AudioPolicyManager::getInputProfile(audio_devices_t device, 3927 uint32_t samplingRate, 3928 audio_format_t format, 3929 audio_channel_mask_t channelMask) 3930{ 3931 // Choose an input profile based on the requested capture parameters: select the first available 3932 // profile supporting all requested parameters. 3933 3934 for (size_t i = 0; i < mHwModules.size(); i++) 3935 { 3936 if (mHwModules[i]->mHandle == 0) { 3937 continue; 3938 } 3939 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) 3940 { 3941 sp<IOProfile> profile = mHwModules[i]->mInputProfiles[j]; 3942 // profile->log(); 3943 if (profile->isCompatibleProfile(device, samplingRate, format, 3944 channelMask, AUDIO_OUTPUT_FLAG_NONE)) { 3945 return profile; 3946 } 3947 } 3948 } 3949 return NULL; 3950} 3951 3952audio_devices_t AudioPolicyManager::getDeviceForInputSource(audio_source_t inputSource) 3953{ 3954 uint32_t device = AUDIO_DEVICE_NONE; 3955 audio_devices_t availableDeviceTypes = mAvailableInputDevices.types() & 3956 ~AUDIO_DEVICE_BIT_IN; 3957 switch (inputSource) { 3958 case AUDIO_SOURCE_VOICE_UPLINK: 3959 if (availableDeviceTypes & AUDIO_DEVICE_IN_VOICE_CALL) { 3960 device = AUDIO_DEVICE_IN_VOICE_CALL; 3961 break; 3962 } 3963 // FALL THROUGH 3964 3965 case AUDIO_SOURCE_DEFAULT: 3966 case AUDIO_SOURCE_MIC: 3967 if (availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) { 3968 device = AUDIO_DEVICE_IN_BLUETOOTH_A2DP; 3969 break; 3970 } 3971 // FALL THROUGH 3972 3973 case AUDIO_SOURCE_VOICE_RECOGNITION: 3974 case AUDIO_SOURCE_HOTWORD: 3975 case AUDIO_SOURCE_VOICE_COMMUNICATION: 3976 if (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] == AUDIO_POLICY_FORCE_BT_SCO && 3977 availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) { 3978 device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET; 3979 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_WIRED_HEADSET) { 3980 device = AUDIO_DEVICE_IN_WIRED_HEADSET; 3981 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_USB_DEVICE) { 3982 device = AUDIO_DEVICE_IN_USB_DEVICE; 3983 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 3984 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 3985 } 3986 break; 3987 case AUDIO_SOURCE_CAMCORDER: 3988 if (availableDeviceTypes & AUDIO_DEVICE_IN_BACK_MIC) { 3989 device = AUDIO_DEVICE_IN_BACK_MIC; 3990 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 3991 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 3992 } 3993 break; 3994 case AUDIO_SOURCE_VOICE_DOWNLINK: 3995 case AUDIO_SOURCE_VOICE_CALL: 3996 if (availableDeviceTypes & AUDIO_DEVICE_IN_VOICE_CALL) { 3997 device = AUDIO_DEVICE_IN_VOICE_CALL; 3998 } 3999 break; 4000 case AUDIO_SOURCE_REMOTE_SUBMIX: 4001 if (availableDeviceTypes & AUDIO_DEVICE_IN_REMOTE_SUBMIX) { 4002 device = AUDIO_DEVICE_IN_REMOTE_SUBMIX; 4003 } 4004 break; 4005 default: 4006 ALOGW("getDeviceForInputSource() invalid input source %d", inputSource); 4007 break; 4008 } 4009 ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device); 4010 return device; 4011} 4012 4013bool AudioPolicyManager::isVirtualInputDevice(audio_devices_t device) 4014{ 4015 if ((device & AUDIO_DEVICE_BIT_IN) != 0) { 4016 device &= ~AUDIO_DEVICE_BIT_IN; 4017 if ((popcount(device) == 1) && ((device & ~APM_AUDIO_IN_DEVICE_VIRTUAL_ALL) == 0)) 4018 return true; 4019 } 4020 return false; 4021} 4022 4023audio_io_handle_t AudioPolicyManager::getActiveInput(bool ignoreVirtualInputs) 4024{ 4025 for (size_t i = 0; i < mInputs.size(); i++) { 4026 const sp<AudioInputDescriptor> input_descriptor = mInputs.valueAt(i); 4027 if ((input_descriptor->mRefCount > 0) 4028 && (!ignoreVirtualInputs || !isVirtualInputDevice(input_descriptor->mDevice))) { 4029 return mInputs.keyAt(i); 4030 } 4031 } 4032 return 0; 4033} 4034 4035 4036audio_devices_t AudioPolicyManager::getDeviceForVolume(audio_devices_t device) 4037{ 4038 if (device == AUDIO_DEVICE_NONE) { 4039 // this happens when forcing a route update and no track is active on an output. 4040 // In this case the returned category is not important. 4041 device = AUDIO_DEVICE_OUT_SPEAKER; 4042 } else if (popcount(device) > 1) { 4043 // Multiple device selection is either: 4044 // - speaker + one other device: give priority to speaker in this case. 4045 // - one A2DP device + another device: happens with duplicated output. In this case 4046 // retain the device on the A2DP output as the other must not correspond to an active 4047 // selection if not the speaker. 4048 if (device & AUDIO_DEVICE_OUT_SPEAKER) { 4049 device = AUDIO_DEVICE_OUT_SPEAKER; 4050 } else { 4051 device = (audio_devices_t)(device & AUDIO_DEVICE_OUT_ALL_A2DP); 4052 } 4053 } 4054 4055 ALOGW_IF(popcount(device) != 1, 4056 "getDeviceForVolume() invalid device combination: %08x", 4057 device); 4058 4059 return device; 4060} 4061 4062AudioPolicyManager::device_category AudioPolicyManager::getDeviceCategory(audio_devices_t device) 4063{ 4064 switch(getDeviceForVolume(device)) { 4065 case AUDIO_DEVICE_OUT_EARPIECE: 4066 return DEVICE_CATEGORY_EARPIECE; 4067 case AUDIO_DEVICE_OUT_WIRED_HEADSET: 4068 case AUDIO_DEVICE_OUT_WIRED_HEADPHONE: 4069 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO: 4070 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET: 4071 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP: 4072 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES: 4073 return DEVICE_CATEGORY_HEADSET; 4074 case AUDIO_DEVICE_OUT_SPEAKER: 4075 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT: 4076 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER: 4077 case AUDIO_DEVICE_OUT_AUX_DIGITAL: 4078 case AUDIO_DEVICE_OUT_USB_ACCESSORY: 4079 case AUDIO_DEVICE_OUT_USB_DEVICE: 4080 case AUDIO_DEVICE_OUT_REMOTE_SUBMIX: 4081 default: 4082 return DEVICE_CATEGORY_SPEAKER; 4083 } 4084} 4085 4086float AudioPolicyManager::volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc, 4087 int indexInUi) 4088{ 4089 device_category deviceCategory = getDeviceCategory(device); 4090 const VolumeCurvePoint *curve = streamDesc.mVolumeCurve[deviceCategory]; 4091 4092 // the volume index in the UI is relative to the min and max volume indices for this stream type 4093 int nbSteps = 1 + curve[VOLMAX].mIndex - 4094 curve[VOLMIN].mIndex; 4095 int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) / 4096 (streamDesc.mIndexMax - streamDesc.mIndexMin); 4097 4098 // find what part of the curve this index volume belongs to, or if it's out of bounds 4099 int segment = 0; 4100 if (volIdx < curve[VOLMIN].mIndex) { // out of bounds 4101 return 0.0f; 4102 } else if (volIdx < curve[VOLKNEE1].mIndex) { 4103 segment = 0; 4104 } else if (volIdx < curve[VOLKNEE2].mIndex) { 4105 segment = 1; 4106 } else if (volIdx <= curve[VOLMAX].mIndex) { 4107 segment = 2; 4108 } else { // out of bounds 4109 return 1.0f; 4110 } 4111 4112 // linear interpolation in the attenuation table in dB 4113 float decibels = curve[segment].mDBAttenuation + 4114 ((float)(volIdx - curve[segment].mIndex)) * 4115 ( (curve[segment+1].mDBAttenuation - 4116 curve[segment].mDBAttenuation) / 4117 ((float)(curve[segment+1].mIndex - 4118 curve[segment].mIndex)) ); 4119 4120 float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 ) 4121 4122 ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f", 4123 curve[segment].mIndex, volIdx, 4124 curve[segment+1].mIndex, 4125 curve[segment].mDBAttenuation, 4126 decibels, 4127 curve[segment+1].mDBAttenuation, 4128 amplification); 4129 4130 return amplification; 4131} 4132 4133const AudioPolicyManager::VolumeCurvePoint 4134 AudioPolicyManager::sDefaultVolumeCurve[AudioPolicyManager::VOLCNT] = { 4135 {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f} 4136}; 4137 4138const AudioPolicyManager::VolumeCurvePoint 4139 AudioPolicyManager::sDefaultMediaVolumeCurve[AudioPolicyManager::VOLCNT] = { 4140 {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f} 4141}; 4142 4143const AudioPolicyManager::VolumeCurvePoint 4144 AudioPolicyManager::sSpeakerMediaVolumeCurve[AudioPolicyManager::VOLCNT] = { 4145 {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f} 4146}; 4147 4148const AudioPolicyManager::VolumeCurvePoint 4149 AudioPolicyManager::sSpeakerMediaVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4150 {1, -55.0f}, {20, -43.0f}, {86, -12.0f}, {100, 0.0f} 4151}; 4152 4153const AudioPolicyManager::VolumeCurvePoint 4154 AudioPolicyManager::sSpeakerSonificationVolumeCurve[AudioPolicyManager::VOLCNT] = { 4155 {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f} 4156}; 4157 4158const AudioPolicyManager::VolumeCurvePoint 4159 AudioPolicyManager::sSpeakerSonificationVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4160 {1, -35.7f}, {33, -26.1f}, {66, -13.2f}, {100, 0.0f} 4161}; 4162 4163// AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks 4164// AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets. 4165// AUDIO_STREAM_DTMF tracks AUDIO_STREAM_VOICE_CALL while in call (See AudioService.java). 4166// The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset. 4167 4168const AudioPolicyManager::VolumeCurvePoint 4169 AudioPolicyManager::sDefaultSystemVolumeCurve[AudioPolicyManager::VOLCNT] = { 4170 {1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f} 4171}; 4172 4173const AudioPolicyManager::VolumeCurvePoint 4174 AudioPolicyManager::sDefaultSystemVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4175 {1, -34.0f}, {33, -24.0f}, {66, -15.0f}, {100, -6.0f} 4176}; 4177 4178const AudioPolicyManager::VolumeCurvePoint 4179 AudioPolicyManager::sHeadsetSystemVolumeCurve[AudioPolicyManager::VOLCNT] = { 4180 {1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f} 4181}; 4182 4183const AudioPolicyManager::VolumeCurvePoint 4184 AudioPolicyManager::sDefaultVoiceVolumeCurve[AudioPolicyManager::VOLCNT] = { 4185 {0, -42.0f}, {33, -28.0f}, {66, -14.0f}, {100, 0.0f} 4186}; 4187 4188const AudioPolicyManager::VolumeCurvePoint 4189 AudioPolicyManager::sSpeakerVoiceVolumeCurve[AudioPolicyManager::VOLCNT] = { 4190 {0, -24.0f}, {33, -16.0f}, {66, -8.0f}, {100, 0.0f} 4191}; 4192 4193const AudioPolicyManager::VolumeCurvePoint 4194 *AudioPolicyManager::sVolumeProfiles[AUDIO_STREAM_CNT] 4195 [AudioPolicyManager::DEVICE_CATEGORY_CNT] = { 4196 { // AUDIO_STREAM_VOICE_CALL 4197 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET 4198 sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4199 sDefaultVoiceVolumeCurve // DEVICE_CATEGORY_EARPIECE 4200 }, 4201 { // AUDIO_STREAM_SYSTEM 4202 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4203 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4204 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE 4205 }, 4206 { // AUDIO_STREAM_RING 4207 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4208 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4209 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE 4210 }, 4211 { // AUDIO_STREAM_MUSIC 4212 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET 4213 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4214 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE 4215 }, 4216 { // AUDIO_STREAM_ALARM 4217 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4218 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4219 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE 4220 }, 4221 { // AUDIO_STREAM_NOTIFICATION 4222 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4223 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4224 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE 4225 }, 4226 { // AUDIO_STREAM_BLUETOOTH_SCO 4227 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET 4228 sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4229 sDefaultVoiceVolumeCurve // DEVICE_CATEGORY_EARPIECE 4230 }, 4231 { // AUDIO_STREAM_ENFORCED_AUDIBLE 4232 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4233 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4234 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE 4235 }, 4236 { // AUDIO_STREAM_DTMF 4237 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4238 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4239 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE 4240 }, 4241 { // AUDIO_STREAM_TTS 4242 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET 4243 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4244 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE 4245 }, 4246}; 4247 4248void AudioPolicyManager::initializeVolumeCurves() 4249{ 4250 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 4251 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { 4252 mStreams[i].mVolumeCurve[j] = 4253 sVolumeProfiles[i][j]; 4254 } 4255 } 4256 4257 // Check availability of DRC on speaker path: if available, override some of the speaker curves 4258 if (mSpeakerDrcEnabled) { 4259 mStreams[AUDIO_STREAM_SYSTEM].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4260 sDefaultSystemVolumeCurveDrc; 4261 mStreams[AUDIO_STREAM_RING].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4262 sSpeakerSonificationVolumeCurveDrc; 4263 mStreams[AUDIO_STREAM_ALARM].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4264 sSpeakerSonificationVolumeCurveDrc; 4265 mStreams[AUDIO_STREAM_NOTIFICATION].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4266 sSpeakerSonificationVolumeCurveDrc; 4267 mStreams[AUDIO_STREAM_MUSIC].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4268 sSpeakerMediaVolumeCurveDrc; 4269 } 4270} 4271 4272float AudioPolicyManager::computeVolume(audio_stream_type_t stream, 4273 int index, 4274 audio_io_handle_t output, 4275 audio_devices_t device) 4276{ 4277 float volume = 1.0; 4278 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 4279 StreamDescriptor &streamDesc = mStreams[stream]; 4280 4281 if (device == AUDIO_DEVICE_NONE) { 4282 device = outputDesc->device(); 4283 } 4284 4285 volume = volIndexToAmpl(device, streamDesc, index); 4286 4287 // if a headset is connected, apply the following rules to ring tones and notifications 4288 // to avoid sound level bursts in user's ears: 4289 // - always attenuate ring tones and notifications volume by 6dB 4290 // - if music is playing, always limit the volume to current music volume, 4291 // with a minimum threshold at -36dB so that notification is always perceived. 4292 const routing_strategy stream_strategy = getStrategy(stream); 4293 if ((device & (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP | 4294 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | 4295 AUDIO_DEVICE_OUT_WIRED_HEADSET | 4296 AUDIO_DEVICE_OUT_WIRED_HEADPHONE)) && 4297 ((stream_strategy == STRATEGY_SONIFICATION) 4298 || (stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL) 4299 || (stream == AUDIO_STREAM_SYSTEM) 4300 || ((stream_strategy == STRATEGY_ENFORCED_AUDIBLE) && 4301 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_NONE))) && 4302 streamDesc.mCanBeMuted) { 4303 volume *= SONIFICATION_HEADSET_VOLUME_FACTOR; 4304 // when the phone is ringing we must consider that music could have been paused just before 4305 // by the music application and behave as if music was active if the last music track was 4306 // just stopped 4307 if (isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY) || 4308 mLimitRingtoneVolume) { 4309 audio_devices_t musicDevice = getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/); 4310 float musicVol = computeVolume(AUDIO_STREAM_MUSIC, 4311 mStreams[AUDIO_STREAM_MUSIC].getVolumeIndex(musicDevice), 4312 output, 4313 musicDevice); 4314 float minVol = (musicVol > SONIFICATION_HEADSET_VOLUME_MIN) ? 4315 musicVol : SONIFICATION_HEADSET_VOLUME_MIN; 4316 if (volume > minVol) { 4317 volume = minVol; 4318 ALOGV("computeVolume limiting volume to %f musicVol %f", minVol, musicVol); 4319 } 4320 } 4321 } 4322 4323 return volume; 4324} 4325 4326status_t AudioPolicyManager::checkAndSetVolume(audio_stream_type_t stream, 4327 int index, 4328 audio_io_handle_t output, 4329 audio_devices_t device, 4330 int delayMs, 4331 bool force) 4332{ 4333 4334 // do not change actual stream volume if the stream is muted 4335 if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) { 4336 ALOGVV("checkAndSetVolume() stream %d muted count %d", 4337 stream, mOutputs.valueFor(output)->mMuteCount[stream]); 4338 return NO_ERROR; 4339 } 4340 4341 // do not change in call volume if bluetooth is connected and vice versa 4342 if ((stream == AUDIO_STREAM_VOICE_CALL && 4343 mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] == AUDIO_POLICY_FORCE_BT_SCO) || 4344 (stream == AUDIO_STREAM_BLUETOOTH_SCO && 4345 mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] != AUDIO_POLICY_FORCE_BT_SCO)) { 4346 ALOGV("checkAndSetVolume() cannot set stream %d volume with force use = %d for comm", 4347 stream, mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]); 4348 return INVALID_OPERATION; 4349 } 4350 4351 float volume = computeVolume(stream, index, output, device); 4352 // We actually change the volume if: 4353 // - the float value returned by computeVolume() changed 4354 // - the force flag is set 4355 if (volume != mOutputs.valueFor(output)->mCurVolume[stream] || 4356 force) { 4357 mOutputs.valueFor(output)->mCurVolume[stream] = volume; 4358 ALOGVV("checkAndSetVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs); 4359 // Force VOICE_CALL to track BLUETOOTH_SCO stream volume when bluetooth audio is 4360 // enabled 4361 if (stream == AUDIO_STREAM_BLUETOOTH_SCO) { 4362 mpClientInterface->setStreamVolume(AUDIO_STREAM_VOICE_CALL, volume, output, delayMs); 4363 } 4364 mpClientInterface->setStreamVolume(stream, volume, output, delayMs); 4365 } 4366 4367 if (stream == AUDIO_STREAM_VOICE_CALL || 4368 stream == AUDIO_STREAM_BLUETOOTH_SCO) { 4369 float voiceVolume; 4370 // Force voice volume to max for bluetooth SCO as volume is managed by the headset 4371 if (stream == AUDIO_STREAM_VOICE_CALL) { 4372 voiceVolume = (float)index/(float)mStreams[stream].mIndexMax; 4373 } else { 4374 voiceVolume = 1.0; 4375 } 4376 4377 if (voiceVolume != mLastVoiceVolume && output == mPrimaryOutput) { 4378 mpClientInterface->setVoiceVolume(voiceVolume, delayMs); 4379 mLastVoiceVolume = voiceVolume; 4380 } 4381 } 4382 4383 return NO_ERROR; 4384} 4385 4386void AudioPolicyManager::applyStreamVolumes(audio_io_handle_t output, 4387 audio_devices_t device, 4388 int delayMs, 4389 bool force) 4390{ 4391 ALOGVV("applyStreamVolumes() for output %d and device %x", output, device); 4392 4393 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 4394 checkAndSetVolume((audio_stream_type_t)stream, 4395 mStreams[stream].getVolumeIndex(device), 4396 output, 4397 device, 4398 delayMs, 4399 force); 4400 } 4401} 4402 4403void AudioPolicyManager::setStrategyMute(routing_strategy strategy, 4404 bool on, 4405 audio_io_handle_t output, 4406 int delayMs, 4407 audio_devices_t device) 4408{ 4409 ALOGVV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output); 4410 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 4411 if (getStrategy((audio_stream_type_t)stream) == strategy) { 4412 setStreamMute((audio_stream_type_t)stream, on, output, delayMs, device); 4413 } 4414 } 4415} 4416 4417void AudioPolicyManager::setStreamMute(audio_stream_type_t stream, 4418 bool on, 4419 audio_io_handle_t output, 4420 int delayMs, 4421 audio_devices_t device) 4422{ 4423 StreamDescriptor &streamDesc = mStreams[stream]; 4424 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 4425 if (device == AUDIO_DEVICE_NONE) { 4426 device = outputDesc->device(); 4427 } 4428 4429 ALOGVV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d device %04x", 4430 stream, on, output, outputDesc->mMuteCount[stream], device); 4431 4432 if (on) { 4433 if (outputDesc->mMuteCount[stream] == 0) { 4434 if (streamDesc.mCanBeMuted && 4435 ((stream != AUDIO_STREAM_ENFORCED_AUDIBLE) || 4436 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_NONE))) { 4437 checkAndSetVolume(stream, 0, output, device, delayMs); 4438 } 4439 } 4440 // increment mMuteCount after calling checkAndSetVolume() so that volume change is not ignored 4441 outputDesc->mMuteCount[stream]++; 4442 } else { 4443 if (outputDesc->mMuteCount[stream] == 0) { 4444 ALOGV("setStreamMute() unmuting non muted stream!"); 4445 return; 4446 } 4447 if (--outputDesc->mMuteCount[stream] == 0) { 4448 checkAndSetVolume(stream, 4449 streamDesc.getVolumeIndex(device), 4450 output, 4451 device, 4452 delayMs); 4453 } 4454 } 4455} 4456 4457void AudioPolicyManager::handleIncallSonification(audio_stream_type_t stream, 4458 bool starting, bool stateChange) 4459{ 4460 // if the stream pertains to sonification strategy and we are in call we must 4461 // mute the stream if it is low visibility. If it is high visibility, we must play a tone 4462 // in the device used for phone strategy and play the tone if the selected device does not 4463 // interfere with the device used for phone strategy 4464 // if stateChange is true, we are called from setPhoneState() and we must mute or unmute as 4465 // many times as there are active tracks on the output 4466 const routing_strategy stream_strategy = getStrategy(stream); 4467 if ((stream_strategy == STRATEGY_SONIFICATION) || 4468 ((stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL))) { 4469 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(mPrimaryOutput); 4470 ALOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d", 4471 stream, starting, outputDesc->mDevice, stateChange); 4472 if (outputDesc->mRefCount[stream]) { 4473 int muteCount = 1; 4474 if (stateChange) { 4475 muteCount = outputDesc->mRefCount[stream]; 4476 } 4477 if (audio_is_low_visibility(stream)) { 4478 ALOGV("handleIncallSonification() low visibility, muteCount %d", muteCount); 4479 for (int i = 0; i < muteCount; i++) { 4480 setStreamMute(stream, starting, mPrimaryOutput); 4481 } 4482 } else { 4483 ALOGV("handleIncallSonification() high visibility"); 4484 if (outputDesc->device() & 4485 getDeviceForStrategy(STRATEGY_PHONE, true /*fromCache*/)) { 4486 ALOGV("handleIncallSonification() high visibility muted, muteCount %d", muteCount); 4487 for (int i = 0; i < muteCount; i++) { 4488 setStreamMute(stream, starting, mPrimaryOutput); 4489 } 4490 } 4491 if (starting) { 4492 mpClientInterface->startTone(AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION, 4493 AUDIO_STREAM_VOICE_CALL); 4494 } else { 4495 mpClientInterface->stopTone(); 4496 } 4497 } 4498 } 4499 } 4500} 4501 4502bool AudioPolicyManager::isInCall() 4503{ 4504 return isStateInCall(mPhoneState); 4505} 4506 4507bool AudioPolicyManager::isStateInCall(int state) { 4508 return ((state == AUDIO_MODE_IN_CALL) || 4509 (state == AUDIO_MODE_IN_COMMUNICATION)); 4510} 4511 4512uint32_t AudioPolicyManager::getMaxEffectsCpuLoad() 4513{ 4514 return MAX_EFFECTS_CPU_LOAD; 4515} 4516 4517uint32_t AudioPolicyManager::getMaxEffectsMemory() 4518{ 4519 return MAX_EFFECTS_MEMORY; 4520} 4521 4522 4523// --- AudioOutputDescriptor class implementation 4524 4525AudioPolicyManager::AudioOutputDescriptor::AudioOutputDescriptor( 4526 const sp<IOProfile>& profile) 4527 : mId(0), mIoHandle(0), mLatency(0), 4528 mFlags((audio_output_flags_t)0), mDevice(AUDIO_DEVICE_NONE), mPatchHandle(0), 4529 mOutput1(0), mOutput2(0), mProfile(profile), mDirectOpenCount(0) 4530{ 4531 // clear usage count for all stream types 4532 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 4533 mRefCount[i] = 0; 4534 mCurVolume[i] = -1.0; 4535 mMuteCount[i] = 0; 4536 mStopTime[i] = 0; 4537 } 4538 for (int i = 0; i < NUM_STRATEGIES; i++) { 4539 mStrategyMutedByDevice[i] = false; 4540 } 4541 if (profile != NULL) { 4542 mAudioPort = profile; 4543 mSamplingRate = profile->pickSamplingRate(); 4544 mFormat = profile->pickFormat(); 4545 mChannelMask = profile->pickChannelMask(); 4546 if (profile->mGains.size() > 0) { 4547 profile->mGains[0]->getDefaultConfig(&mGain); 4548 } 4549 mFlags = profile->mFlags; 4550 } 4551} 4552 4553audio_devices_t AudioPolicyManager::AudioOutputDescriptor::device() const 4554{ 4555 if (isDuplicated()) { 4556 return (audio_devices_t)(mOutput1->mDevice | mOutput2->mDevice); 4557 } else { 4558 return mDevice; 4559 } 4560} 4561 4562uint32_t AudioPolicyManager::AudioOutputDescriptor::latency() 4563{ 4564 if (isDuplicated()) { 4565 return (mOutput1->mLatency > mOutput2->mLatency) ? mOutput1->mLatency : mOutput2->mLatency; 4566 } else { 4567 return mLatency; 4568 } 4569} 4570 4571bool AudioPolicyManager::AudioOutputDescriptor::sharesHwModuleWith( 4572 const sp<AudioOutputDescriptor> outputDesc) 4573{ 4574 if (isDuplicated()) { 4575 return mOutput1->sharesHwModuleWith(outputDesc) || mOutput2->sharesHwModuleWith(outputDesc); 4576 } else if (outputDesc->isDuplicated()){ 4577 return sharesHwModuleWith(outputDesc->mOutput1) || sharesHwModuleWith(outputDesc->mOutput2); 4578 } else { 4579 return (mProfile->mModule == outputDesc->mProfile->mModule); 4580 } 4581} 4582 4583void AudioPolicyManager::AudioOutputDescriptor::changeRefCount(audio_stream_type_t stream, 4584 int delta) 4585{ 4586 // forward usage count change to attached outputs 4587 if (isDuplicated()) { 4588 mOutput1->changeRefCount(stream, delta); 4589 mOutput2->changeRefCount(stream, delta); 4590 } 4591 if ((delta + (int)mRefCount[stream]) < 0) { 4592 ALOGW("changeRefCount() invalid delta %d for stream %d, refCount %d", 4593 delta, stream, mRefCount[stream]); 4594 mRefCount[stream] = 0; 4595 return; 4596 } 4597 mRefCount[stream] += delta; 4598 ALOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]); 4599} 4600 4601audio_devices_t AudioPolicyManager::AudioOutputDescriptor::supportedDevices() 4602{ 4603 if (isDuplicated()) { 4604 return (audio_devices_t)(mOutput1->supportedDevices() | mOutput2->supportedDevices()); 4605 } else { 4606 return mProfile->mSupportedDevices.types() ; 4607 } 4608} 4609 4610bool AudioPolicyManager::AudioOutputDescriptor::isActive(uint32_t inPastMs) const 4611{ 4612 return isStrategyActive(NUM_STRATEGIES, inPastMs); 4613} 4614 4615bool AudioPolicyManager::AudioOutputDescriptor::isStrategyActive(routing_strategy strategy, 4616 uint32_t inPastMs, 4617 nsecs_t sysTime) const 4618{ 4619 if ((sysTime == 0) && (inPastMs != 0)) { 4620 sysTime = systemTime(); 4621 } 4622 for (int i = 0; i < (int)AUDIO_STREAM_CNT; i++) { 4623 if (((getStrategy((audio_stream_type_t)i) == strategy) || 4624 (NUM_STRATEGIES == strategy)) && 4625 isStreamActive((audio_stream_type_t)i, inPastMs, sysTime)) { 4626 return true; 4627 } 4628 } 4629 return false; 4630} 4631 4632bool AudioPolicyManager::AudioOutputDescriptor::isStreamActive(audio_stream_type_t stream, 4633 uint32_t inPastMs, 4634 nsecs_t sysTime) const 4635{ 4636 if (mRefCount[stream] != 0) { 4637 return true; 4638 } 4639 if (inPastMs == 0) { 4640 return false; 4641 } 4642 if (sysTime == 0) { 4643 sysTime = systemTime(); 4644 } 4645 if (ns2ms(sysTime - mStopTime[stream]) < inPastMs) { 4646 return true; 4647 } 4648 return false; 4649} 4650 4651void AudioPolicyManager::AudioOutputDescriptor::toAudioPortConfig( 4652 struct audio_port_config *dstConfig, 4653 const struct audio_port_config *srcConfig) const 4654{ 4655 ALOG_ASSERT(!isDuplicated(), "toAudioPortConfig() called on duplicated output %d", mIoHandle); 4656 4657 dstConfig->config_mask = AUDIO_PORT_CONFIG_SAMPLE_RATE|AUDIO_PORT_CONFIG_CHANNEL_MASK| 4658 AUDIO_PORT_CONFIG_FORMAT|AUDIO_PORT_CONFIG_GAIN; 4659 if (srcConfig != NULL) { 4660 dstConfig->config_mask |= srcConfig->config_mask; 4661 } 4662 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 4663 4664 dstConfig->id = mId; 4665 dstConfig->role = AUDIO_PORT_ROLE_SOURCE; 4666 dstConfig->type = AUDIO_PORT_TYPE_MIX; 4667 dstConfig->ext.mix.hw_module = mProfile->mModule->mHandle; 4668 dstConfig->ext.mix.handle = mIoHandle; 4669 dstConfig->ext.mix.usecase.stream = AUDIO_STREAM_DEFAULT; 4670} 4671 4672void AudioPolicyManager::AudioOutputDescriptor::toAudioPort( 4673 struct audio_port *port) const 4674{ 4675 ALOG_ASSERT(!isDuplicated(), "toAudioPort() called on duplicated output %d", mIoHandle); 4676 mProfile->toAudioPort(port); 4677 port->id = mId; 4678 toAudioPortConfig(&port->active_config); 4679 port->ext.mix.hw_module = mProfile->mModule->mHandle; 4680 port->ext.mix.handle = mIoHandle; 4681 port->ext.mix.latency_class = 4682 mFlags & AUDIO_OUTPUT_FLAG_FAST ? AUDIO_LATENCY_LOW : AUDIO_LATENCY_NORMAL; 4683} 4684 4685status_t AudioPolicyManager::AudioOutputDescriptor::dump(int fd) 4686{ 4687 const size_t SIZE = 256; 4688 char buffer[SIZE]; 4689 String8 result; 4690 4691 snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); 4692 result.append(buffer); 4693 snprintf(buffer, SIZE, " Format: %08x\n", mFormat); 4694 result.append(buffer); 4695 snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask); 4696 result.append(buffer); 4697 snprintf(buffer, SIZE, " Latency: %d\n", mLatency); 4698 result.append(buffer); 4699 snprintf(buffer, SIZE, " Flags %08x\n", mFlags); 4700 result.append(buffer); 4701 snprintf(buffer, SIZE, " Devices %08x\n", device()); 4702 result.append(buffer); 4703 snprintf(buffer, SIZE, " Stream volume refCount muteCount\n"); 4704 result.append(buffer); 4705 for (int i = 0; i < (int)AUDIO_STREAM_CNT; i++) { 4706 snprintf(buffer, SIZE, " %02d %.03f %02d %02d\n", 4707 i, mCurVolume[i], mRefCount[i], mMuteCount[i]); 4708 result.append(buffer); 4709 } 4710 write(fd, result.string(), result.size()); 4711 4712 return NO_ERROR; 4713} 4714 4715// --- AudioInputDescriptor class implementation 4716 4717AudioPolicyManager::AudioInputDescriptor::AudioInputDescriptor(const sp<IOProfile>& profile) 4718 : mId(0), mIoHandle(0), 4719 mDevice(AUDIO_DEVICE_NONE), mPatchHandle(0), mRefCount(0), 4720 mInputSource(AUDIO_SOURCE_DEFAULT), mProfile(profile) 4721{ 4722 if (profile != NULL) { 4723 mAudioPort = profile; 4724 mSamplingRate = profile->pickSamplingRate(); 4725 mFormat = profile->pickFormat(); 4726 mChannelMask = profile->pickChannelMask(); 4727 if (profile->mGains.size() > 0) { 4728 profile->mGains[0]->getDefaultConfig(&mGain); 4729 } 4730 } 4731} 4732 4733void AudioPolicyManager::AudioInputDescriptor::toAudioPortConfig( 4734 struct audio_port_config *dstConfig, 4735 const struct audio_port_config *srcConfig) const 4736{ 4737 ALOG_ASSERT(mProfile != 0, 4738 "toAudioPortConfig() called on input with null profile %d", mIoHandle); 4739 dstConfig->config_mask = AUDIO_PORT_CONFIG_SAMPLE_RATE|AUDIO_PORT_CONFIG_CHANNEL_MASK| 4740 AUDIO_PORT_CONFIG_FORMAT|AUDIO_PORT_CONFIG_GAIN; 4741 if (srcConfig != NULL) { 4742 dstConfig->config_mask |= srcConfig->config_mask; 4743 } 4744 4745 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 4746 4747 dstConfig->id = mId; 4748 dstConfig->role = AUDIO_PORT_ROLE_SINK; 4749 dstConfig->type = AUDIO_PORT_TYPE_MIX; 4750 dstConfig->ext.mix.hw_module = mProfile->mModule->mHandle; 4751 dstConfig->ext.mix.handle = mIoHandle; 4752 dstConfig->ext.mix.usecase.source = mInputSource; 4753} 4754 4755void AudioPolicyManager::AudioInputDescriptor::toAudioPort( 4756 struct audio_port *port) const 4757{ 4758 ALOG_ASSERT(mProfile != 0, "toAudioPort() called on input with null profile %d", mIoHandle); 4759 4760 mProfile->toAudioPort(port); 4761 port->id = mId; 4762 toAudioPortConfig(&port->active_config); 4763 port->ext.mix.hw_module = mProfile->mModule->mHandle; 4764 port->ext.mix.handle = mIoHandle; 4765 port->ext.mix.latency_class = AUDIO_LATENCY_NORMAL; 4766} 4767 4768status_t AudioPolicyManager::AudioInputDescriptor::dump(int fd) 4769{ 4770 const size_t SIZE = 256; 4771 char buffer[SIZE]; 4772 String8 result; 4773 4774 snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); 4775 result.append(buffer); 4776 snprintf(buffer, SIZE, " Format: %d\n", mFormat); 4777 result.append(buffer); 4778 snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask); 4779 result.append(buffer); 4780 snprintf(buffer, SIZE, " Devices %08x\n", mDevice); 4781 result.append(buffer); 4782 snprintf(buffer, SIZE, " Ref Count %d\n", mRefCount); 4783 result.append(buffer); 4784 write(fd, result.string(), result.size()); 4785 4786 return NO_ERROR; 4787} 4788 4789// --- StreamDescriptor class implementation 4790 4791AudioPolicyManager::StreamDescriptor::StreamDescriptor() 4792 : mIndexMin(0), mIndexMax(1), mCanBeMuted(true) 4793{ 4794 mIndexCur.add(AUDIO_DEVICE_OUT_DEFAULT, 0); 4795} 4796 4797int AudioPolicyManager::StreamDescriptor::getVolumeIndex(audio_devices_t device) 4798{ 4799 device = AudioPolicyManager::getDeviceForVolume(device); 4800 // there is always a valid entry for AUDIO_DEVICE_OUT_DEFAULT 4801 if (mIndexCur.indexOfKey(device) < 0) { 4802 device = AUDIO_DEVICE_OUT_DEFAULT; 4803 } 4804 return mIndexCur.valueFor(device); 4805} 4806 4807void AudioPolicyManager::StreamDescriptor::dump(int fd) 4808{ 4809 const size_t SIZE = 256; 4810 char buffer[SIZE]; 4811 String8 result; 4812 4813 snprintf(buffer, SIZE, "%s %02d %02d ", 4814 mCanBeMuted ? "true " : "false", mIndexMin, mIndexMax); 4815 result.append(buffer); 4816 for (size_t i = 0; i < mIndexCur.size(); i++) { 4817 snprintf(buffer, SIZE, "%04x : %02d, ", 4818 mIndexCur.keyAt(i), 4819 mIndexCur.valueAt(i)); 4820 result.append(buffer); 4821 } 4822 result.append("\n"); 4823 4824 write(fd, result.string(), result.size()); 4825} 4826 4827// --- EffectDescriptor class implementation 4828 4829status_t AudioPolicyManager::EffectDescriptor::dump(int fd) 4830{ 4831 const size_t SIZE = 256; 4832 char buffer[SIZE]; 4833 String8 result; 4834 4835 snprintf(buffer, SIZE, " I/O: %d\n", mIo); 4836 result.append(buffer); 4837 snprintf(buffer, SIZE, " Strategy: %d\n", mStrategy); 4838 result.append(buffer); 4839 snprintf(buffer, SIZE, " Session: %d\n", mSession); 4840 result.append(buffer); 4841 snprintf(buffer, SIZE, " Name: %s\n", mDesc.name); 4842 result.append(buffer); 4843 snprintf(buffer, SIZE, " %s\n", mEnabled ? "Enabled" : "Disabled"); 4844 result.append(buffer); 4845 write(fd, result.string(), result.size()); 4846 4847 return NO_ERROR; 4848} 4849 4850// --- HwModule class implementation 4851 4852AudioPolicyManager::HwModule::HwModule(const char *name) 4853 : mName(strndup(name, AUDIO_HARDWARE_MODULE_ID_MAX_LEN)), 4854 mHalVersion(AUDIO_DEVICE_API_VERSION_MIN), mHandle(0) 4855{ 4856} 4857 4858AudioPolicyManager::HwModule::~HwModule() 4859{ 4860 for (size_t i = 0; i < mOutputProfiles.size(); i++) { 4861 mOutputProfiles[i]->mSupportedDevices.clear(); 4862 } 4863 for (size_t i = 0; i < mInputProfiles.size(); i++) { 4864 mInputProfiles[i]->mSupportedDevices.clear(); 4865 } 4866 free((void *)mName); 4867} 4868 4869status_t AudioPolicyManager::HwModule::loadInput(cnode *root) 4870{ 4871 cnode *node = root->first_child; 4872 4873 sp<IOProfile> profile = new IOProfile(String8(root->name), AUDIO_PORT_ROLE_SINK, this); 4874 4875 while (node) { 4876 if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) { 4877 profile->loadSamplingRates((char *)node->value); 4878 } else if (strcmp(node->name, FORMATS_TAG) == 0) { 4879 profile->loadFormats((char *)node->value); 4880 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 4881 profile->loadInChannels((char *)node->value); 4882 } else if (strcmp(node->name, DEVICES_TAG) == 0) { 4883 profile->mSupportedDevices.loadDevicesFromName((char *)node->value, 4884 mDeclaredDevices); 4885 } else if (strcmp(node->name, GAINS_TAG) == 0) { 4886 profile->loadGains(node); 4887 } 4888 node = node->next; 4889 } 4890 ALOGW_IF(profile->mSupportedDevices.isEmpty(), 4891 "loadInput() invalid supported devices"); 4892 ALOGW_IF(profile->mChannelMasks.size() == 0, 4893 "loadInput() invalid supported channel masks"); 4894 ALOGW_IF(profile->mSamplingRates.size() == 0, 4895 "loadInput() invalid supported sampling rates"); 4896 ALOGW_IF(profile->mFormats.size() == 0, 4897 "loadInput() invalid supported formats"); 4898 if (!profile->mSupportedDevices.isEmpty() && 4899 (profile->mChannelMasks.size() != 0) && 4900 (profile->mSamplingRates.size() != 0) && 4901 (profile->mFormats.size() != 0)) { 4902 4903 ALOGV("loadInput() adding input Supported Devices %04x", 4904 profile->mSupportedDevices.types()); 4905 4906 mInputProfiles.add(profile); 4907 return NO_ERROR; 4908 } else { 4909 return BAD_VALUE; 4910 } 4911} 4912 4913status_t AudioPolicyManager::HwModule::loadOutput(cnode *root) 4914{ 4915 cnode *node = root->first_child; 4916 4917 sp<IOProfile> profile = new IOProfile(String8(root->name), AUDIO_PORT_ROLE_SOURCE, this); 4918 4919 while (node) { 4920 if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) { 4921 profile->loadSamplingRates((char *)node->value); 4922 } else if (strcmp(node->name, FORMATS_TAG) == 0) { 4923 profile->loadFormats((char *)node->value); 4924 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 4925 profile->loadOutChannels((char *)node->value); 4926 } else if (strcmp(node->name, DEVICES_TAG) == 0) { 4927 profile->mSupportedDevices.loadDevicesFromName((char *)node->value, 4928 mDeclaredDevices); 4929 } else if (strcmp(node->name, FLAGS_TAG) == 0) { 4930 profile->mFlags = parseFlagNames((char *)node->value); 4931 } else if (strcmp(node->name, GAINS_TAG) == 0) { 4932 profile->loadGains(node); 4933 } 4934 node = node->next; 4935 } 4936 ALOGW_IF(profile->mSupportedDevices.isEmpty(), 4937 "loadOutput() invalid supported devices"); 4938 ALOGW_IF(profile->mChannelMasks.size() == 0, 4939 "loadOutput() invalid supported channel masks"); 4940 ALOGW_IF(profile->mSamplingRates.size() == 0, 4941 "loadOutput() invalid supported sampling rates"); 4942 ALOGW_IF(profile->mFormats.size() == 0, 4943 "loadOutput() invalid supported formats"); 4944 if (!profile->mSupportedDevices.isEmpty() && 4945 (profile->mChannelMasks.size() != 0) && 4946 (profile->mSamplingRates.size() != 0) && 4947 (profile->mFormats.size() != 0)) { 4948 4949 ALOGV("loadOutput() adding output Supported Devices %04x, mFlags %04x", 4950 profile->mSupportedDevices.types(), profile->mFlags); 4951 4952 mOutputProfiles.add(profile); 4953 return NO_ERROR; 4954 } else { 4955 return BAD_VALUE; 4956 } 4957} 4958 4959status_t AudioPolicyManager::HwModule::loadDevice(cnode *root) 4960{ 4961 cnode *node = root->first_child; 4962 4963 audio_devices_t type = AUDIO_DEVICE_NONE; 4964 while (node) { 4965 if (strcmp(node->name, DEVICE_TYPE) == 0) { 4966 type = parseDeviceNames((char *)node->value); 4967 break; 4968 } 4969 node = node->next; 4970 } 4971 if (type == AUDIO_DEVICE_NONE || 4972 (!audio_is_input_device(type) && !audio_is_output_device(type))) { 4973 ALOGW("loadDevice() bad type %08x", type); 4974 return BAD_VALUE; 4975 } 4976 sp<DeviceDescriptor> deviceDesc = new DeviceDescriptor(String8(root->name), type); 4977 deviceDesc->mModule = this; 4978 4979 node = root->first_child; 4980 while (node) { 4981 if (strcmp(node->name, DEVICE_ADDRESS) == 0) { 4982 deviceDesc->mAddress = String8((char *)node->value); 4983 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 4984 if (audio_is_input_device(type)) { 4985 deviceDesc->loadInChannels((char *)node->value); 4986 } else { 4987 deviceDesc->loadOutChannels((char *)node->value); 4988 } 4989 } else if (strcmp(node->name, GAINS_TAG) == 0) { 4990 deviceDesc->loadGains(node); 4991 } 4992 node = node->next; 4993 } 4994 4995 ALOGV("loadDevice() adding device name %s type %08x address %s", 4996 deviceDesc->mName.string(), type, deviceDesc->mAddress.string()); 4997 4998 mDeclaredDevices.add(deviceDesc); 4999 5000 return NO_ERROR; 5001} 5002 5003void AudioPolicyManager::HwModule::dump(int fd) 5004{ 5005 const size_t SIZE = 256; 5006 char buffer[SIZE]; 5007 String8 result; 5008 5009 snprintf(buffer, SIZE, " - name: %s\n", mName); 5010 result.append(buffer); 5011 snprintf(buffer, SIZE, " - handle: %d\n", mHandle); 5012 result.append(buffer); 5013 snprintf(buffer, SIZE, " - version: %u.%u\n", mHalVersion >> 8, mHalVersion & 0xFF); 5014 result.append(buffer); 5015 write(fd, result.string(), result.size()); 5016 if (mOutputProfiles.size()) { 5017 write(fd, " - outputs:\n", strlen(" - outputs:\n")); 5018 for (size_t i = 0; i < mOutputProfiles.size(); i++) { 5019 snprintf(buffer, SIZE, " output %zu:\n", i); 5020 write(fd, buffer, strlen(buffer)); 5021 mOutputProfiles[i]->dump(fd); 5022 } 5023 } 5024 if (mInputProfiles.size()) { 5025 write(fd, " - inputs:\n", strlen(" - inputs:\n")); 5026 for (size_t i = 0; i < mInputProfiles.size(); i++) { 5027 snprintf(buffer, SIZE, " input %zu:\n", i); 5028 write(fd, buffer, strlen(buffer)); 5029 mInputProfiles[i]->dump(fd); 5030 } 5031 } 5032 if (mDeclaredDevices.size()) { 5033 write(fd, " - devices:\n", strlen(" - devices:\n")); 5034 for (size_t i = 0; i < mDeclaredDevices.size(); i++) { 5035 mDeclaredDevices[i]->dump(fd, 4, i); 5036 } 5037 } 5038} 5039 5040// --- AudioPort class implementation 5041 5042 5043AudioPolicyManager::AudioPort::AudioPort(const String8& name, audio_port_type_t type, 5044 audio_port_role_t role, const sp<HwModule>& module) : 5045 mName(name), mType(type), mRole(role), mModule(module), mFlags((audio_output_flags_t)0) 5046{ 5047 mUseInChannelMask = ((type == AUDIO_PORT_TYPE_DEVICE) && (role == AUDIO_PORT_ROLE_SOURCE)) || 5048 ((type == AUDIO_PORT_TYPE_MIX) && (role == AUDIO_PORT_ROLE_SINK)); 5049} 5050 5051void AudioPolicyManager::AudioPort::toAudioPort(struct audio_port *port) const 5052{ 5053 port->role = mRole; 5054 port->type = mType; 5055 unsigned int i; 5056 for (i = 0; i < mSamplingRates.size() && i < AUDIO_PORT_MAX_SAMPLING_RATES; i++) { 5057 port->sample_rates[i] = mSamplingRates[i]; 5058 } 5059 port->num_sample_rates = i; 5060 for (i = 0; i < mChannelMasks.size() && i < AUDIO_PORT_MAX_CHANNEL_MASKS; i++) { 5061 port->channel_masks[i] = mChannelMasks[i]; 5062 } 5063 port->num_channel_masks = i; 5064 for (i = 0; i < mFormats.size() && i < AUDIO_PORT_MAX_FORMATS; i++) { 5065 port->formats[i] = mFormats[i]; 5066 } 5067 port->num_formats = i; 5068 5069 ALOGV("AudioPort::toAudioPort() num gains %zu", mGains.size()); 5070 5071 for (i = 0; i < mGains.size() && i < AUDIO_PORT_MAX_GAINS; i++) { 5072 port->gains[i] = mGains[i]->mGain; 5073 } 5074 port->num_gains = i; 5075} 5076 5077 5078void AudioPolicyManager::AudioPort::loadSamplingRates(char *name) 5079{ 5080 char *str = strtok(name, "|"); 5081 5082 // by convention, "0' in the first entry in mSamplingRates indicates the supported sampling 5083 // rates should be read from the output stream after it is opened for the first time 5084 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5085 mSamplingRates.add(0); 5086 return; 5087 } 5088 5089 while (str != NULL) { 5090 uint32_t rate = atoi(str); 5091 if (rate != 0) { 5092 ALOGV("loadSamplingRates() adding rate %d", rate); 5093 mSamplingRates.add(rate); 5094 } 5095 str = strtok(NULL, "|"); 5096 } 5097} 5098 5099void AudioPolicyManager::AudioPort::loadFormats(char *name) 5100{ 5101 char *str = strtok(name, "|"); 5102 5103 // by convention, "0' in the first entry in mFormats indicates the supported formats 5104 // should be read from the output stream after it is opened for the first time 5105 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5106 mFormats.add(AUDIO_FORMAT_DEFAULT); 5107 return; 5108 } 5109 5110 while (str != NULL) { 5111 audio_format_t format = (audio_format_t)stringToEnum(sFormatNameToEnumTable, 5112 ARRAY_SIZE(sFormatNameToEnumTable), 5113 str); 5114 if (format != AUDIO_FORMAT_DEFAULT) { 5115 mFormats.add(format); 5116 } 5117 str = strtok(NULL, "|"); 5118 } 5119} 5120 5121void AudioPolicyManager::AudioPort::loadInChannels(char *name) 5122{ 5123 const char *str = strtok(name, "|"); 5124 5125 ALOGV("loadInChannels() %s", name); 5126 5127 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5128 mChannelMasks.add(0); 5129 return; 5130 } 5131 5132 while (str != NULL) { 5133 audio_channel_mask_t channelMask = 5134 (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable, 5135 ARRAY_SIZE(sInChannelsNameToEnumTable), 5136 str); 5137 if (channelMask != 0) { 5138 ALOGV("loadInChannels() adding channelMask %04x", channelMask); 5139 mChannelMasks.add(channelMask); 5140 } 5141 str = strtok(NULL, "|"); 5142 } 5143} 5144 5145void AudioPolicyManager::AudioPort::loadOutChannels(char *name) 5146{ 5147 const char *str = strtok(name, "|"); 5148 5149 ALOGV("loadOutChannels() %s", name); 5150 5151 // by convention, "0' in the first entry in mChannelMasks indicates the supported channel 5152 // masks should be read from the output stream after it is opened for the first time 5153 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5154 mChannelMasks.add(0); 5155 return; 5156 } 5157 5158 while (str != NULL) { 5159 audio_channel_mask_t channelMask = 5160 (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable, 5161 ARRAY_SIZE(sOutChannelsNameToEnumTable), 5162 str); 5163 if (channelMask != 0) { 5164 mChannelMasks.add(channelMask); 5165 } 5166 str = strtok(NULL, "|"); 5167 } 5168 return; 5169} 5170 5171audio_gain_mode_t AudioPolicyManager::AudioPort::loadGainMode(char *name) 5172{ 5173 const char *str = strtok(name, "|"); 5174 5175 ALOGV("loadGainMode() %s", name); 5176 audio_gain_mode_t mode = 0; 5177 while (str != NULL) { 5178 mode |= (audio_gain_mode_t)stringToEnum(sGainModeNameToEnumTable, 5179 ARRAY_SIZE(sGainModeNameToEnumTable), 5180 str); 5181 str = strtok(NULL, "|"); 5182 } 5183 return mode; 5184} 5185 5186void AudioPolicyManager::AudioPort::loadGain(cnode *root, int index) 5187{ 5188 cnode *node = root->first_child; 5189 5190 sp<AudioGain> gain = new AudioGain(index, mUseInChannelMask); 5191 5192 while (node) { 5193 if (strcmp(node->name, GAIN_MODE) == 0) { 5194 gain->mGain.mode = loadGainMode((char *)node->value); 5195 } else if (strcmp(node->name, GAIN_CHANNELS) == 0) { 5196 if (mUseInChannelMask) { 5197 gain->mGain.channel_mask = 5198 (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable, 5199 ARRAY_SIZE(sInChannelsNameToEnumTable), 5200 (char *)node->value); 5201 } else { 5202 gain->mGain.channel_mask = 5203 (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable, 5204 ARRAY_SIZE(sOutChannelsNameToEnumTable), 5205 (char *)node->value); 5206 } 5207 } else if (strcmp(node->name, GAIN_MIN_VALUE) == 0) { 5208 gain->mGain.min_value = atoi((char *)node->value); 5209 } else if (strcmp(node->name, GAIN_MAX_VALUE) == 0) { 5210 gain->mGain.max_value = atoi((char *)node->value); 5211 } else if (strcmp(node->name, GAIN_DEFAULT_VALUE) == 0) { 5212 gain->mGain.default_value = atoi((char *)node->value); 5213 } else if (strcmp(node->name, GAIN_STEP_VALUE) == 0) { 5214 gain->mGain.step_value = atoi((char *)node->value); 5215 } else if (strcmp(node->name, GAIN_MIN_RAMP_MS) == 0) { 5216 gain->mGain.min_ramp_ms = atoi((char *)node->value); 5217 } else if (strcmp(node->name, GAIN_MAX_RAMP_MS) == 0) { 5218 gain->mGain.max_ramp_ms = atoi((char *)node->value); 5219 } 5220 node = node->next; 5221 } 5222 5223 ALOGV("loadGain() adding new gain mode %08x channel mask %08x min mB %d max mB %d", 5224 gain->mGain.mode, gain->mGain.channel_mask, gain->mGain.min_value, gain->mGain.max_value); 5225 5226 if (gain->mGain.mode == 0) { 5227 return; 5228 } 5229 mGains.add(gain); 5230} 5231 5232void AudioPolicyManager::AudioPort::loadGains(cnode *root) 5233{ 5234 cnode *node = root->first_child; 5235 int index = 0; 5236 while (node) { 5237 ALOGV("loadGains() loading gain %s", node->name); 5238 loadGain(node, index++); 5239 node = node->next; 5240 } 5241} 5242 5243status_t AudioPolicyManager::AudioPort::checkSamplingRate(uint32_t samplingRate) const 5244{ 5245 for (size_t i = 0; i < mSamplingRates.size(); i ++) { 5246 if (mSamplingRates[i] == samplingRate) { 5247 return NO_ERROR; 5248 } 5249 } 5250 return BAD_VALUE; 5251} 5252 5253status_t AudioPolicyManager::AudioPort::checkChannelMask(audio_channel_mask_t channelMask) const 5254{ 5255 for (size_t i = 0; i < mChannelMasks.size(); i ++) { 5256 if (mChannelMasks[i] == channelMask) { 5257 return NO_ERROR; 5258 } 5259 } 5260 return BAD_VALUE; 5261} 5262 5263status_t AudioPolicyManager::AudioPort::checkFormat(audio_format_t format) const 5264{ 5265 for (size_t i = 0; i < mFormats.size(); i ++) { 5266 if (mFormats[i] == format) { 5267 return NO_ERROR; 5268 } 5269 } 5270 return BAD_VALUE; 5271} 5272 5273 5274uint32_t AudioPolicyManager::AudioPort::pickSamplingRate() const 5275{ 5276 // special case for uninitialized dynamic profile 5277 if (mSamplingRates.size() == 1 && mSamplingRates[0] == 0) { 5278 return 0; 5279 } 5280 5281 uint32_t samplingRate = 0; 5282 uint32_t maxRate = MAX_MIXER_SAMPLING_RATE; 5283 5284 // For mixed output and inputs, use max mixer sampling rates. Do not 5285 // limit sampling rate otherwise 5286 if ((mType != AUDIO_PORT_TYPE_MIX) || 5287 ((mRole == AUDIO_PORT_ROLE_SOURCE) && 5288 (mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)))) { 5289 maxRate = UINT_MAX; 5290 } 5291 for (size_t i = 0; i < mSamplingRates.size(); i ++) { 5292 if ((mSamplingRates[i] > samplingRate) && (mSamplingRates[i] <= maxRate)) { 5293 samplingRate = mSamplingRates[i]; 5294 } 5295 } 5296 return samplingRate; 5297} 5298 5299audio_channel_mask_t AudioPolicyManager::AudioPort::pickChannelMask() const 5300{ 5301 // special case for uninitialized dynamic profile 5302 if (mChannelMasks.size() == 1 && mChannelMasks[0] == 0) { 5303 return AUDIO_CHANNEL_NONE; 5304 } 5305 5306 audio_channel_mask_t channelMask = AUDIO_CHANNEL_NONE; 5307 uint32_t channelCount = 0; 5308 uint32_t maxCount = MAX_MIXER_CHANNEL_COUNT; 5309 5310 // For mixed output and inputs, use max mixer channel count. Do not 5311 // limit channel count otherwise 5312 if ((mType != AUDIO_PORT_TYPE_MIX) || 5313 ((mRole == AUDIO_PORT_ROLE_SOURCE) && 5314 (mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)))) { 5315 maxCount = UINT_MAX; 5316 } 5317 for (size_t i = 0; i < mChannelMasks.size(); i ++) { 5318 uint32_t cnlCount; 5319 if (mUseInChannelMask) { 5320 cnlCount = audio_channel_count_from_in_mask(mChannelMasks[i]); 5321 } else { 5322 cnlCount = audio_channel_count_from_out_mask(mChannelMasks[i]); 5323 } 5324 if ((cnlCount > channelCount) && (cnlCount <= maxCount)) { 5325 channelMask = mChannelMasks[i]; 5326 } 5327 } 5328 return channelMask; 5329} 5330 5331const audio_format_t AudioPolicyManager::AudioPort::sPcmFormatCompareTable[] = { 5332 AUDIO_FORMAT_DEFAULT, 5333 AUDIO_FORMAT_PCM_16_BIT, 5334 AUDIO_FORMAT_PCM_8_24_BIT, 5335 AUDIO_FORMAT_PCM_24_BIT_PACKED, 5336 AUDIO_FORMAT_PCM_32_BIT, 5337}; 5338 5339int AudioPolicyManager::AudioPort::compareFormats(audio_format_t format1, 5340 audio_format_t format2) 5341{ 5342 // NOTE: AUDIO_FORMAT_INVALID is also considered not PCM and will be compared equal to any 5343 // compressed format and better than any PCM format. This is by design of pickFormat() 5344 if (!audio_is_linear_pcm(format1)) { 5345 if (!audio_is_linear_pcm(format2)) { 5346 return 0; 5347 } 5348 return 1; 5349 } 5350 if (!audio_is_linear_pcm(format2)) { 5351 return -1; 5352 } 5353 5354 int index1 = -1, index2 = -1; 5355 for (size_t i = 0; 5356 (i < ARRAY_SIZE(sPcmFormatCompareTable)) && ((index1 == -1) || (index2 == -1)); 5357 i ++) { 5358 if (sPcmFormatCompareTable[i] == format1) { 5359 index1 = i; 5360 } 5361 if (sPcmFormatCompareTable[i] == format2) { 5362 index2 = i; 5363 } 5364 } 5365 // format1 not found => index1 < 0 => format2 > format1 5366 // format2 not found => index2 < 0 => format2 < format1 5367 return index1 - index2; 5368} 5369 5370audio_format_t AudioPolicyManager::AudioPort::pickFormat() const 5371{ 5372 // special case for uninitialized dynamic profile 5373 if (mFormats.size() == 1 && mFormats[0] == 0) { 5374 return AUDIO_FORMAT_DEFAULT; 5375 } 5376 5377 audio_format_t format = AUDIO_FORMAT_DEFAULT; 5378 audio_format_t bestFormat = BEST_MIXER_FORMAT; 5379 // For mixed output and inputs, use best mixer output format. Do not 5380 // limit format otherwise 5381 if ((mType != AUDIO_PORT_TYPE_MIX) || 5382 ((mRole == AUDIO_PORT_ROLE_SOURCE) && 5383 (((mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)) == 0)))) { 5384 bestFormat = AUDIO_FORMAT_INVALID; 5385 } 5386 5387 for (size_t i = 0; i < mFormats.size(); i ++) { 5388 if ((compareFormats(mFormats[i], format) > 0) && 5389 (compareFormats(mFormats[i], bestFormat) <= 0)) { 5390 format = mFormats[i]; 5391 } 5392 } 5393 return format; 5394} 5395 5396status_t AudioPolicyManager::AudioPort::checkGain(const struct audio_gain_config *gainConfig, 5397 int index) const 5398{ 5399 if (index < 0 || (size_t)index >= mGains.size()) { 5400 return BAD_VALUE; 5401 } 5402 return mGains[index]->checkConfig(gainConfig); 5403} 5404 5405void AudioPolicyManager::AudioPort::dump(int fd, int spaces) const 5406{ 5407 const size_t SIZE = 256; 5408 char buffer[SIZE]; 5409 String8 result; 5410 5411 if (mName.size() != 0) { 5412 snprintf(buffer, SIZE, "%*s- name: %s\n", spaces, "", mName.string()); 5413 result.append(buffer); 5414 } 5415 5416 if (mSamplingRates.size() != 0) { 5417 snprintf(buffer, SIZE, "%*s- sampling rates: ", spaces, ""); 5418 result.append(buffer); 5419 for (size_t i = 0; i < mSamplingRates.size(); i++) { 5420 if (i == 0 && mSamplingRates[i] == 0) { 5421 snprintf(buffer, SIZE, "Dynamic"); 5422 } else { 5423 snprintf(buffer, SIZE, "%d", mSamplingRates[i]); 5424 } 5425 result.append(buffer); 5426 result.append(i == (mSamplingRates.size() - 1) ? "" : ", "); 5427 } 5428 result.append("\n"); 5429 } 5430 5431 if (mChannelMasks.size() != 0) { 5432 snprintf(buffer, SIZE, "%*s- channel masks: ", spaces, ""); 5433 result.append(buffer); 5434 for (size_t i = 0; i < mChannelMasks.size(); i++) { 5435 ALOGV("AudioPort::dump mChannelMasks %zu %08x", i, mChannelMasks[i]); 5436 5437 if (i == 0 && mChannelMasks[i] == 0) { 5438 snprintf(buffer, SIZE, "Dynamic"); 5439 } else { 5440 snprintf(buffer, SIZE, "0x%04x", mChannelMasks[i]); 5441 } 5442 result.append(buffer); 5443 result.append(i == (mChannelMasks.size() - 1) ? "" : ", "); 5444 } 5445 result.append("\n"); 5446 } 5447 5448 if (mFormats.size() != 0) { 5449 snprintf(buffer, SIZE, "%*s- formats: ", spaces, ""); 5450 result.append(buffer); 5451 for (size_t i = 0; i < mFormats.size(); i++) { 5452 const char *formatStr = enumToString(sFormatNameToEnumTable, 5453 ARRAY_SIZE(sFormatNameToEnumTable), 5454 mFormats[i]); 5455 if (i == 0 && strcmp(formatStr, "") == 0) { 5456 snprintf(buffer, SIZE, "Dynamic"); 5457 } else { 5458 snprintf(buffer, SIZE, "%-48s", formatStr); 5459 } 5460 result.append(buffer); 5461 result.append(i == (mFormats.size() - 1) ? "" : ", "); 5462 } 5463 result.append("\n"); 5464 } 5465 write(fd, result.string(), result.size()); 5466 if (mGains.size() != 0) { 5467 snprintf(buffer, SIZE, "%*s- gains:\n", spaces, ""); 5468 write(fd, buffer, strlen(buffer) + 1); 5469 result.append(buffer); 5470 for (size_t i = 0; i < mGains.size(); i++) { 5471 mGains[i]->dump(fd, spaces + 2, i); 5472 } 5473 } 5474} 5475 5476// --- AudioGain class implementation 5477 5478AudioPolicyManager::AudioGain::AudioGain(int index, bool useInChannelMask) 5479{ 5480 mIndex = index; 5481 mUseInChannelMask = useInChannelMask; 5482 memset(&mGain, 0, sizeof(struct audio_gain)); 5483} 5484 5485void AudioPolicyManager::AudioGain::getDefaultConfig(struct audio_gain_config *config) 5486{ 5487 config->index = mIndex; 5488 config->mode = mGain.mode; 5489 config->channel_mask = mGain.channel_mask; 5490 if ((mGain.mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 5491 config->values[0] = mGain.default_value; 5492 } else { 5493 uint32_t numValues; 5494 if (mUseInChannelMask) { 5495 numValues = audio_channel_count_from_in_mask(mGain.channel_mask); 5496 } else { 5497 numValues = audio_channel_count_from_out_mask(mGain.channel_mask); 5498 } 5499 for (size_t i = 0; i < numValues; i++) { 5500 config->values[i] = mGain.default_value; 5501 } 5502 } 5503 if ((mGain.mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 5504 config->ramp_duration_ms = mGain.min_ramp_ms; 5505 } 5506} 5507 5508status_t AudioPolicyManager::AudioGain::checkConfig(const struct audio_gain_config *config) 5509{ 5510 if ((config->mode & ~mGain.mode) != 0) { 5511 return BAD_VALUE; 5512 } 5513 if ((config->mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 5514 if ((config->values[0] < mGain.min_value) || 5515 (config->values[0] > mGain.max_value)) { 5516 return BAD_VALUE; 5517 } 5518 } else { 5519 if ((config->channel_mask & ~mGain.channel_mask) != 0) { 5520 return BAD_VALUE; 5521 } 5522 uint32_t numValues; 5523 if (mUseInChannelMask) { 5524 numValues = audio_channel_count_from_in_mask(config->channel_mask); 5525 } else { 5526 numValues = audio_channel_count_from_out_mask(config->channel_mask); 5527 } 5528 for (size_t i = 0; i < numValues; i++) { 5529 if ((config->values[i] < mGain.min_value) || 5530 (config->values[i] > mGain.max_value)) { 5531 return BAD_VALUE; 5532 } 5533 } 5534 } 5535 if ((config->mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 5536 if ((config->ramp_duration_ms < mGain.min_ramp_ms) || 5537 (config->ramp_duration_ms > mGain.max_ramp_ms)) { 5538 return BAD_VALUE; 5539 } 5540 } 5541 return NO_ERROR; 5542} 5543 5544void AudioPolicyManager::AudioGain::dump(int fd, int spaces, int index) const 5545{ 5546 const size_t SIZE = 256; 5547 char buffer[SIZE]; 5548 String8 result; 5549 5550 snprintf(buffer, SIZE, "%*sGain %d:\n", spaces, "", index+1); 5551 result.append(buffer); 5552 snprintf(buffer, SIZE, "%*s- mode: %08x\n", spaces, "", mGain.mode); 5553 result.append(buffer); 5554 snprintf(buffer, SIZE, "%*s- channel_mask: %08x\n", spaces, "", mGain.channel_mask); 5555 result.append(buffer); 5556 snprintf(buffer, SIZE, "%*s- min_value: %d mB\n", spaces, "", mGain.min_value); 5557 result.append(buffer); 5558 snprintf(buffer, SIZE, "%*s- max_value: %d mB\n", spaces, "", mGain.max_value); 5559 result.append(buffer); 5560 snprintf(buffer, SIZE, "%*s- default_value: %d mB\n", spaces, "", mGain.default_value); 5561 result.append(buffer); 5562 snprintf(buffer, SIZE, "%*s- step_value: %d mB\n", spaces, "", mGain.step_value); 5563 result.append(buffer); 5564 snprintf(buffer, SIZE, "%*s- min_ramp_ms: %d ms\n", spaces, "", mGain.min_ramp_ms); 5565 result.append(buffer); 5566 snprintf(buffer, SIZE, "%*s- max_ramp_ms: %d ms\n", spaces, "", mGain.max_ramp_ms); 5567 result.append(buffer); 5568 5569 write(fd, result.string(), result.size()); 5570} 5571 5572// --- AudioPortConfig class implementation 5573 5574AudioPolicyManager::AudioPortConfig::AudioPortConfig() 5575{ 5576 mSamplingRate = 0; 5577 mChannelMask = AUDIO_CHANNEL_NONE; 5578 mFormat = AUDIO_FORMAT_INVALID; 5579 mGain.index = -1; 5580} 5581 5582status_t AudioPolicyManager::AudioPortConfig::applyAudioPortConfig( 5583 const struct audio_port_config *config, 5584 struct audio_port_config *backupConfig) 5585{ 5586 struct audio_port_config localBackupConfig; 5587 status_t status = NO_ERROR; 5588 5589 localBackupConfig.config_mask = config->config_mask; 5590 toAudioPortConfig(&localBackupConfig); 5591 5592 if (mAudioPort == 0) { 5593 status = NO_INIT; 5594 goto exit; 5595 } 5596 if (config->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE) { 5597 status = mAudioPort->checkSamplingRate(config->sample_rate); 5598 if (status != NO_ERROR) { 5599 goto exit; 5600 } 5601 mSamplingRate = config->sample_rate; 5602 } 5603 if (config->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) { 5604 status = mAudioPort->checkChannelMask(config->channel_mask); 5605 if (status != NO_ERROR) { 5606 goto exit; 5607 } 5608 mChannelMask = config->channel_mask; 5609 } 5610 if (config->config_mask & AUDIO_PORT_CONFIG_FORMAT) { 5611 status = mAudioPort->checkFormat(config->format); 5612 if (status != NO_ERROR) { 5613 goto exit; 5614 } 5615 mFormat = config->format; 5616 } 5617 if (config->config_mask & AUDIO_PORT_CONFIG_GAIN) { 5618 status = mAudioPort->checkGain(&config->gain, config->gain.index); 5619 if (status != NO_ERROR) { 5620 goto exit; 5621 } 5622 mGain = config->gain; 5623 } 5624 5625exit: 5626 if (status != NO_ERROR) { 5627 applyAudioPortConfig(&localBackupConfig); 5628 } 5629 if (backupConfig != NULL) { 5630 *backupConfig = localBackupConfig; 5631 } 5632 return status; 5633} 5634 5635void AudioPolicyManager::AudioPortConfig::toAudioPortConfig( 5636 struct audio_port_config *dstConfig, 5637 const struct audio_port_config *srcConfig) const 5638{ 5639 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE) { 5640 dstConfig->sample_rate = mSamplingRate; 5641 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE)) { 5642 dstConfig->sample_rate = srcConfig->sample_rate; 5643 } 5644 } else { 5645 dstConfig->sample_rate = 0; 5646 } 5647 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) { 5648 dstConfig->channel_mask = mChannelMask; 5649 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK)) { 5650 dstConfig->channel_mask = srcConfig->channel_mask; 5651 } 5652 } else { 5653 dstConfig->channel_mask = AUDIO_CHANNEL_NONE; 5654 } 5655 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_FORMAT) { 5656 dstConfig->format = mFormat; 5657 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_FORMAT)) { 5658 dstConfig->format = srcConfig->format; 5659 } 5660 } else { 5661 dstConfig->format = AUDIO_FORMAT_INVALID; 5662 } 5663 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_GAIN) { 5664 dstConfig->gain = mGain; 5665 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_GAIN)) { 5666 dstConfig->gain = srcConfig->gain; 5667 } 5668 } else { 5669 dstConfig->gain.index = -1; 5670 } 5671 if (dstConfig->gain.index != -1) { 5672 dstConfig->config_mask |= AUDIO_PORT_CONFIG_GAIN; 5673 } else { 5674 dstConfig->config_mask &= ~AUDIO_PORT_CONFIG_GAIN; 5675 } 5676} 5677 5678// --- IOProfile class implementation 5679 5680AudioPolicyManager::IOProfile::IOProfile(const String8& name, audio_port_role_t role, 5681 const sp<HwModule>& module) 5682 : AudioPort(name, AUDIO_PORT_TYPE_MIX, role, module) 5683{ 5684} 5685 5686AudioPolicyManager::IOProfile::~IOProfile() 5687{ 5688} 5689 5690// checks if the IO profile is compatible with specified parameters. 5691// Sampling rate, format and channel mask must be specified in order to 5692// get a valid a match 5693bool AudioPolicyManager::IOProfile::isCompatibleProfile(audio_devices_t device, 5694 uint32_t samplingRate, 5695 audio_format_t format, 5696 audio_channel_mask_t channelMask, 5697 audio_output_flags_t flags) const 5698{ 5699 if (samplingRate == 0 || !audio_is_valid_format(format) || channelMask == 0) { 5700 return false; 5701 } 5702 5703 if ((mSupportedDevices.types() & device) != device) { 5704 return false; 5705 } 5706 if ((mFlags & flags) != flags) { 5707 return false; 5708 } 5709 if (checkSamplingRate(samplingRate) != NO_ERROR) { 5710 return false; 5711 } 5712 if (checkChannelMask(channelMask) != NO_ERROR) { 5713 return false; 5714 } 5715 if (checkFormat(format) != NO_ERROR) { 5716 return false; 5717 } 5718 return true; 5719} 5720 5721void AudioPolicyManager::IOProfile::dump(int fd) 5722{ 5723 const size_t SIZE = 256; 5724 char buffer[SIZE]; 5725 String8 result; 5726 5727 AudioPort::dump(fd, 4); 5728 5729 snprintf(buffer, SIZE, " - flags: 0x%04x\n", mFlags); 5730 result.append(buffer); 5731 snprintf(buffer, SIZE, " - devices:\n"); 5732 result.append(buffer); 5733 write(fd, result.string(), result.size()); 5734 for (size_t i = 0; i < mSupportedDevices.size(); i++) { 5735 mSupportedDevices[i]->dump(fd, 6, i); 5736 } 5737} 5738 5739void AudioPolicyManager::IOProfile::log() 5740{ 5741 const size_t SIZE = 256; 5742 char buffer[SIZE]; 5743 String8 result; 5744 5745 ALOGV(" - sampling rates: "); 5746 for (size_t i = 0; i < mSamplingRates.size(); i++) { 5747 ALOGV(" %d", mSamplingRates[i]); 5748 } 5749 5750 ALOGV(" - channel masks: "); 5751 for (size_t i = 0; i < mChannelMasks.size(); i++) { 5752 ALOGV(" 0x%04x", mChannelMasks[i]); 5753 } 5754 5755 ALOGV(" - formats: "); 5756 for (size_t i = 0; i < mFormats.size(); i++) { 5757 ALOGV(" 0x%08x", mFormats[i]); 5758 } 5759 5760 ALOGV(" - devices: 0x%04x\n", mSupportedDevices.types()); 5761 ALOGV(" - flags: 0x%04x\n", mFlags); 5762} 5763 5764 5765// --- DeviceDescriptor implementation 5766 5767 5768AudioPolicyManager::DeviceDescriptor::DeviceDescriptor(const String8& name, audio_devices_t type) : 5769 AudioPort(name, AUDIO_PORT_TYPE_DEVICE, 5770 audio_is_output_device(type) ? AUDIO_PORT_ROLE_SINK : 5771 AUDIO_PORT_ROLE_SOURCE, 5772 NULL), 5773 mDeviceType(type), mAddress(""), mId(0) 5774{ 5775 mAudioPort = this; 5776 if (mGains.size() > 0) { 5777 mGains[0]->getDefaultConfig(&mGain); 5778 } 5779} 5780 5781bool AudioPolicyManager::DeviceDescriptor::equals(const sp<DeviceDescriptor>& other) const 5782{ 5783 // Devices are considered equal if they: 5784 // - are of the same type (a device type cannot be AUDIO_DEVICE_NONE) 5785 // - have the same address or one device does not specify the address 5786 // - have the same channel mask or one device does not specify the channel mask 5787 return (mDeviceType == other->mDeviceType) && 5788 (mAddress == "" || other->mAddress == "" || mAddress == other->mAddress) && 5789 (mChannelMask == 0 || other->mChannelMask == 0 || 5790 mChannelMask == other->mChannelMask); 5791} 5792 5793void AudioPolicyManager::DeviceVector::refreshTypes() 5794{ 5795 mDeviceTypes = AUDIO_DEVICE_NONE; 5796 for(size_t i = 0; i < size(); i++) { 5797 mDeviceTypes |= itemAt(i)->mDeviceType; 5798 } 5799 ALOGV("DeviceVector::refreshTypes() mDeviceTypes %08x", mDeviceTypes); 5800} 5801 5802ssize_t AudioPolicyManager::DeviceVector::indexOf(const sp<DeviceDescriptor>& item) const 5803{ 5804 for(size_t i = 0; i < size(); i++) { 5805 if (item->equals(itemAt(i))) { 5806 return i; 5807 } 5808 } 5809 return -1; 5810} 5811 5812ssize_t AudioPolicyManager::DeviceVector::add(const sp<DeviceDescriptor>& item) 5813{ 5814 ssize_t ret = indexOf(item); 5815 5816 if (ret < 0) { 5817 ret = SortedVector::add(item); 5818 if (ret >= 0) { 5819 refreshTypes(); 5820 } 5821 } else { 5822 ALOGW("DeviceVector::add device %08x already in", item->mDeviceType); 5823 ret = -1; 5824 } 5825 return ret; 5826} 5827 5828ssize_t AudioPolicyManager::DeviceVector::remove(const sp<DeviceDescriptor>& item) 5829{ 5830 size_t i; 5831 ssize_t ret = indexOf(item); 5832 5833 if (ret < 0) { 5834 ALOGW("DeviceVector::remove device %08x not in", item->mDeviceType); 5835 } else { 5836 ret = SortedVector::removeAt(ret); 5837 if (ret >= 0) { 5838 refreshTypes(); 5839 } 5840 } 5841 return ret; 5842} 5843 5844void AudioPolicyManager::DeviceVector::loadDevicesFromType(audio_devices_t types) 5845{ 5846 DeviceVector deviceList; 5847 5848 uint32_t role_bit = AUDIO_DEVICE_BIT_IN & types; 5849 types &= ~role_bit; 5850 5851 while (types) { 5852 uint32_t i = 31 - __builtin_clz(types); 5853 uint32_t type = 1 << i; 5854 types &= ~type; 5855 add(new DeviceDescriptor(String8(""), type | role_bit)); 5856 } 5857} 5858 5859void AudioPolicyManager::DeviceVector::loadDevicesFromName(char *name, 5860 const DeviceVector& declaredDevices) 5861{ 5862 char *devName = strtok(name, "|"); 5863 while (devName != NULL) { 5864 if (strlen(devName) != 0) { 5865 audio_devices_t type = stringToEnum(sDeviceNameToEnumTable, 5866 ARRAY_SIZE(sDeviceNameToEnumTable), 5867 devName); 5868 if (type != AUDIO_DEVICE_NONE) { 5869 add(new DeviceDescriptor(String8(""), type)); 5870 } else { 5871 sp<DeviceDescriptor> deviceDesc = 5872 declaredDevices.getDeviceFromName(String8(devName)); 5873 if (deviceDesc != 0) { 5874 add(deviceDesc); 5875 } 5876 } 5877 } 5878 devName = strtok(NULL, "|"); 5879 } 5880} 5881 5882sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDevice( 5883 audio_devices_t type, String8 address) const 5884{ 5885 sp<DeviceDescriptor> device; 5886 for (size_t i = 0; i < size(); i++) { 5887 if (itemAt(i)->mDeviceType == type) { 5888 device = itemAt(i); 5889 if (itemAt(i)->mAddress = address) { 5890 break; 5891 } 5892 } 5893 } 5894 ALOGV("DeviceVector::getDevice() for type %d address %s found %p", 5895 type, address.string(), device.get()); 5896 return device; 5897} 5898 5899sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDeviceFromId( 5900 audio_port_handle_t id) const 5901{ 5902 sp<DeviceDescriptor> device; 5903 for (size_t i = 0; i < size(); i++) { 5904 ALOGV("DeviceVector::getDeviceFromId(%d) itemAt(%zu)->mId %d", id, i, itemAt(i)->mId); 5905 if (itemAt(i)->mId == id) { 5906 device = itemAt(i); 5907 break; 5908 } 5909 } 5910 return device; 5911} 5912 5913AudioPolicyManager::DeviceVector AudioPolicyManager::DeviceVector::getDevicesFromType( 5914 audio_devices_t type) const 5915{ 5916 DeviceVector devices; 5917 for (size_t i = 0; (i < size()) && (type != AUDIO_DEVICE_NONE); i++) { 5918 if (itemAt(i)->mDeviceType & type & ~AUDIO_DEVICE_BIT_IN) { 5919 devices.add(itemAt(i)); 5920 type &= ~itemAt(i)->mDeviceType; 5921 ALOGV("DeviceVector::getDevicesFromType() for type %x found %p", 5922 itemAt(i)->mDeviceType, itemAt(i).get()); 5923 } 5924 } 5925 return devices; 5926} 5927 5928sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDeviceFromName( 5929 const String8& name) const 5930{ 5931 sp<DeviceDescriptor> device; 5932 for (size_t i = 0; i < size(); i++) { 5933 if (itemAt(i)->mName == name) { 5934 device = itemAt(i); 5935 break; 5936 } 5937 } 5938 return device; 5939} 5940 5941void AudioPolicyManager::DeviceDescriptor::toAudioPortConfig( 5942 struct audio_port_config *dstConfig, 5943 const struct audio_port_config *srcConfig) const 5944{ 5945 dstConfig->config_mask = AUDIO_PORT_CONFIG_CHANNEL_MASK|AUDIO_PORT_CONFIG_GAIN; 5946 if (srcConfig != NULL) { 5947 dstConfig->config_mask |= srcConfig->config_mask; 5948 } 5949 5950 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 5951 5952 dstConfig->id = mId; 5953 dstConfig->role = audio_is_output_device(mDeviceType) ? 5954 AUDIO_PORT_ROLE_SINK : AUDIO_PORT_ROLE_SOURCE; 5955 dstConfig->type = AUDIO_PORT_TYPE_DEVICE; 5956 dstConfig->ext.device.type = mDeviceType; 5957 dstConfig->ext.device.hw_module = mModule->mHandle; 5958 strncpy(dstConfig->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN); 5959} 5960 5961void AudioPolicyManager::DeviceDescriptor::toAudioPort(struct audio_port *port) const 5962{ 5963 ALOGV("DeviceDescriptor::toAudioPort() handle %d type %x", mId, mDeviceType); 5964 AudioPort::toAudioPort(port); 5965 port->id = mId; 5966 toAudioPortConfig(&port->active_config); 5967 port->ext.device.type = mDeviceType; 5968 port->ext.device.hw_module = mModule->mHandle; 5969 strncpy(port->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN); 5970} 5971 5972status_t AudioPolicyManager::DeviceDescriptor::dump(int fd, int spaces, int index) const 5973{ 5974 const size_t SIZE = 256; 5975 char buffer[SIZE]; 5976 String8 result; 5977 5978 snprintf(buffer, SIZE, "%*sDevice %d:\n", spaces, "", index+1); 5979 result.append(buffer); 5980 if (mId != 0) { 5981 snprintf(buffer, SIZE, "%*s- id: %2d\n", spaces, "", mId); 5982 result.append(buffer); 5983 } 5984 snprintf(buffer, SIZE, "%*s- type: %-48s\n", spaces, "", 5985 enumToString(sDeviceNameToEnumTable, 5986 ARRAY_SIZE(sDeviceNameToEnumTable), 5987 mDeviceType)); 5988 result.append(buffer); 5989 if (mAddress.size() != 0) { 5990 snprintf(buffer, SIZE, "%*s- address: %-32s\n", spaces, "", mAddress.string()); 5991 result.append(buffer); 5992 } 5993 write(fd, result.string(), result.size()); 5994 AudioPort::dump(fd, spaces); 5995 5996 return NO_ERROR; 5997} 5998 5999 6000// --- audio_policy.conf file parsing 6001 6002audio_output_flags_t AudioPolicyManager::parseFlagNames(char *name) 6003{ 6004 uint32_t flag = 0; 6005 6006 // it is OK to cast name to non const here as we are not going to use it after 6007 // strtok() modifies it 6008 char *flagName = strtok(name, "|"); 6009 while (flagName != NULL) { 6010 if (strlen(flagName) != 0) { 6011 flag |= stringToEnum(sFlagNameToEnumTable, 6012 ARRAY_SIZE(sFlagNameToEnumTable), 6013 flagName); 6014 } 6015 flagName = strtok(NULL, "|"); 6016 } 6017 //force direct flag if offload flag is set: offloading implies a direct output stream 6018 // and all common behaviors are driven by checking only the direct flag 6019 // this should normally be set appropriately in the policy configuration file 6020 if ((flag & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) { 6021 flag |= AUDIO_OUTPUT_FLAG_DIRECT; 6022 } 6023 6024 return (audio_output_flags_t)flag; 6025} 6026 6027audio_devices_t AudioPolicyManager::parseDeviceNames(char *name) 6028{ 6029 uint32_t device = 0; 6030 6031 char *devName = strtok(name, "|"); 6032 while (devName != NULL) { 6033 if (strlen(devName) != 0) { 6034 device |= stringToEnum(sDeviceNameToEnumTable, 6035 ARRAY_SIZE(sDeviceNameToEnumTable), 6036 devName); 6037 } 6038 devName = strtok(NULL, "|"); 6039 } 6040 return device; 6041} 6042 6043void AudioPolicyManager::loadHwModule(cnode *root) 6044{ 6045 status_t status = NAME_NOT_FOUND; 6046 cnode *node; 6047 sp<HwModule> module = new HwModule(root->name); 6048 6049 node = config_find(root, DEVICES_TAG); 6050 if (node != NULL) { 6051 node = node->first_child; 6052 while (node) { 6053 ALOGV("loadHwModule() loading device %s", node->name); 6054 status_t tmpStatus = module->loadDevice(node); 6055 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 6056 status = tmpStatus; 6057 } 6058 node = node->next; 6059 } 6060 } 6061 node = config_find(root, OUTPUTS_TAG); 6062 if (node != NULL) { 6063 node = node->first_child; 6064 while (node) { 6065 ALOGV("loadHwModule() loading output %s", node->name); 6066 status_t tmpStatus = module->loadOutput(node); 6067 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 6068 status = tmpStatus; 6069 } 6070 node = node->next; 6071 } 6072 } 6073 node = config_find(root, INPUTS_TAG); 6074 if (node != NULL) { 6075 node = node->first_child; 6076 while (node) { 6077 ALOGV("loadHwModule() loading input %s", node->name); 6078 status_t tmpStatus = module->loadInput(node); 6079 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 6080 status = tmpStatus; 6081 } 6082 node = node->next; 6083 } 6084 } 6085 loadGlobalConfig(root, module); 6086 6087 if (status == NO_ERROR) { 6088 mHwModules.add(module); 6089 } 6090} 6091 6092void AudioPolicyManager::loadHwModules(cnode *root) 6093{ 6094 cnode *node = config_find(root, AUDIO_HW_MODULE_TAG); 6095 if (node == NULL) { 6096 return; 6097 } 6098 6099 node = node->first_child; 6100 while (node) { 6101 ALOGV("loadHwModules() loading module %s", node->name); 6102 loadHwModule(node); 6103 node = node->next; 6104 } 6105} 6106 6107void AudioPolicyManager::loadGlobalConfig(cnode *root, const sp<HwModule>& module) 6108{ 6109 cnode *node = config_find(root, GLOBAL_CONFIG_TAG); 6110 6111 if (node == NULL) { 6112 return; 6113 } 6114 DeviceVector declaredDevices; 6115 if (module != NULL) { 6116 declaredDevices = module->mDeclaredDevices; 6117 } 6118 6119 node = node->first_child; 6120 while (node) { 6121 if (strcmp(ATTACHED_OUTPUT_DEVICES_TAG, node->name) == 0) { 6122 mAvailableOutputDevices.loadDevicesFromName((char *)node->value, 6123 declaredDevices); 6124 ALOGV("loadGlobalConfig() Attached Output Devices %08x", 6125 mAvailableOutputDevices.types()); 6126 } else if (strcmp(DEFAULT_OUTPUT_DEVICE_TAG, node->name) == 0) { 6127 audio_devices_t device = (audio_devices_t)stringToEnum(sDeviceNameToEnumTable, 6128 ARRAY_SIZE(sDeviceNameToEnumTable), 6129 (char *)node->value); 6130 if (device != AUDIO_DEVICE_NONE) { 6131 mDefaultOutputDevice = new DeviceDescriptor(String8(""), device); 6132 } else { 6133 ALOGW("loadGlobalConfig() default device not specified"); 6134 } 6135 ALOGV("loadGlobalConfig() mDefaultOutputDevice %08x", mDefaultOutputDevice->mDeviceType); 6136 } else if (strcmp(ATTACHED_INPUT_DEVICES_TAG, node->name) == 0) { 6137 mAvailableInputDevices.loadDevicesFromName((char *)node->value, 6138 declaredDevices); 6139 ALOGV("loadGlobalConfig() Available InputDevices %08x", mAvailableInputDevices.types()); 6140 } else if (strcmp(SPEAKER_DRC_ENABLED_TAG, node->name) == 0) { 6141 mSpeakerDrcEnabled = stringToBool((char *)node->value); 6142 ALOGV("loadGlobalConfig() mSpeakerDrcEnabled = %d", mSpeakerDrcEnabled); 6143 } else if (strcmp(AUDIO_HAL_VERSION_TAG, node->name) == 0) { 6144 uint32_t major, minor; 6145 sscanf((char *)node->value, "%u.%u", &major, &minor); 6146 module->mHalVersion = HARDWARE_DEVICE_API_VERSION(major, minor); 6147 ALOGV("loadGlobalConfig() mHalVersion = %04x major %u minor %u", 6148 module->mHalVersion, major, minor); 6149 } 6150 node = node->next; 6151 } 6152} 6153 6154status_t AudioPolicyManager::loadAudioPolicyConfig(const char *path) 6155{ 6156 cnode *root; 6157 char *data; 6158 6159 data = (char *)load_file(path, NULL); 6160 if (data == NULL) { 6161 return -ENODEV; 6162 } 6163 root = config_node("", ""); 6164 config_load(root, data); 6165 6166 loadHwModules(root); 6167 // legacy audio_policy.conf files have one global_configuration section 6168 loadGlobalConfig(root, getModuleFromName(AUDIO_HARDWARE_MODULE_ID_PRIMARY)); 6169 config_free(root); 6170 free(root); 6171 free(data); 6172 6173 ALOGI("loadAudioPolicyConfig() loaded %s\n", path); 6174 6175 return NO_ERROR; 6176} 6177 6178void AudioPolicyManager::defaultAudioPolicyConfig(void) 6179{ 6180 sp<HwModule> module; 6181 sp<IOProfile> profile; 6182 sp<DeviceDescriptor> defaultInputDevice = new DeviceDescriptor(String8(""), 6183 AUDIO_DEVICE_IN_BUILTIN_MIC); 6184 mAvailableOutputDevices.add(mDefaultOutputDevice); 6185 mAvailableInputDevices.add(defaultInputDevice); 6186 6187 module = new HwModule("primary"); 6188 6189 profile = new IOProfile(String8("primary"), AUDIO_PORT_ROLE_SOURCE, module); 6190 profile->mSamplingRates.add(44100); 6191 profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT); 6192 profile->mChannelMasks.add(AUDIO_CHANNEL_OUT_STEREO); 6193 profile->mSupportedDevices.add(mDefaultOutputDevice); 6194 profile->mFlags = AUDIO_OUTPUT_FLAG_PRIMARY; 6195 module->mOutputProfiles.add(profile); 6196 6197 profile = new IOProfile(String8("primary"), AUDIO_PORT_ROLE_SINK, module); 6198 profile->mSamplingRates.add(8000); 6199 profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT); 6200 profile->mChannelMasks.add(AUDIO_CHANNEL_IN_MONO); 6201 profile->mSupportedDevices.add(defaultInputDevice); 6202 module->mInputProfiles.add(profile); 6203 6204 mHwModules.add(module); 6205} 6206 6207audio_stream_type_t AudioPolicyManager::streamTypefromAttributesInt(const audio_attributes_t *attr) 6208{ 6209 // flags to stream type mapping 6210 if ((attr->flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) { 6211 return AUDIO_STREAM_ENFORCED_AUDIBLE; 6212 } 6213 if ((attr->flags & AUDIO_FLAG_SCO) == AUDIO_FLAG_SCO) { 6214 return AUDIO_STREAM_BLUETOOTH_SCO; 6215 } 6216 6217 // usage to stream type mapping 6218 switch (attr->usage) { 6219 case AUDIO_USAGE_MEDIA: 6220 case AUDIO_USAGE_GAME: 6221 case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY: 6222 case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: 6223 return AUDIO_STREAM_MUSIC; 6224 case AUDIO_USAGE_ASSISTANCE_SONIFICATION: 6225 return AUDIO_STREAM_SYSTEM; 6226 case AUDIO_USAGE_VOICE_COMMUNICATION: 6227 return AUDIO_STREAM_VOICE_CALL; 6228 6229 case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING: 6230 return AUDIO_STREAM_DTMF; 6231 6232 case AUDIO_USAGE_ALARM: 6233 return AUDIO_STREAM_ALARM; 6234 case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE: 6235 return AUDIO_STREAM_RING; 6236 6237 case AUDIO_USAGE_NOTIFICATION: 6238 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST: 6239 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT: 6240 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED: 6241 case AUDIO_USAGE_NOTIFICATION_EVENT: 6242 return AUDIO_STREAM_NOTIFICATION; 6243 6244 case AUDIO_USAGE_UNKNOWN: 6245 default: 6246 return AUDIO_STREAM_MUSIC; 6247 } 6248} 6249}; // namespace android 6250