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 // A device mask for all audio input and output devices where matching inputs/outputs on device 34 // type alone is not enough: the address must match too 35 #define APM_AUDIO_DEVICE_MATCH_ADDRESS_ALL (AUDIO_DEVICE_IN_REMOTE_SUBMIX | \ 36 AUDIO_DEVICE_OUT_REMOTE_SUBMIX) 37 38 #include <inttypes.h> 39 #include <math.h> 40 41 #include <cutils/properties.h> 42 #include <utils/Log.h> 43 #include <hardware/audio.h> 44 #include <hardware/audio_effect.h> 45 #include <media/AudioParameter.h> 46 #include <soundtrigger/SoundTrigger.h> 47 #include "AudioPolicyManager.h" 48 #include "audio_policy_conf.h" 49 50 namespace android { 51 52 // ---------------------------------------------------------------------------- 53 // Definitions for audio_policy.conf file parsing 54 // ---------------------------------------------------------------------------- 55 56 struct StringToEnum { 57 const char *name; 58 uint32_t value; 59 }; 60 61 #define STRING_TO_ENUM(string) { #string, string } 62 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) 63 64 const StringToEnum sDeviceNameToEnumTable[] = { 65 STRING_TO_ENUM(AUDIO_DEVICE_OUT_EARPIECE), 66 STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPEAKER), 67 STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPEAKER_SAFE), 68 STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADSET), 69 STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADPHONE), 70 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO), 71 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET), 72 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT), 73 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_SCO), 74 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP), 75 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES), 76 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER), 77 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_A2DP), 78 STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_DIGITAL), 79 STRING_TO_ENUM(AUDIO_DEVICE_OUT_HDMI), 80 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET), 81 STRING_TO_ENUM(AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET), 82 STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_ACCESSORY), 83 STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_DEVICE), 84 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_USB), 85 STRING_TO_ENUM(AUDIO_DEVICE_OUT_REMOTE_SUBMIX), 86 STRING_TO_ENUM(AUDIO_DEVICE_OUT_TELEPHONY_TX), 87 STRING_TO_ENUM(AUDIO_DEVICE_OUT_LINE), 88 STRING_TO_ENUM(AUDIO_DEVICE_OUT_HDMI_ARC), 89 STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPDIF), 90 STRING_TO_ENUM(AUDIO_DEVICE_OUT_FM), 91 STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_LINE), 92 STRING_TO_ENUM(AUDIO_DEVICE_IN_AMBIENT), 93 STRING_TO_ENUM(AUDIO_DEVICE_IN_BUILTIN_MIC), 94 STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET), 95 STRING_TO_ENUM(AUDIO_DEVICE_IN_ALL_SCO), 96 STRING_TO_ENUM(AUDIO_DEVICE_IN_WIRED_HEADSET), 97 STRING_TO_ENUM(AUDIO_DEVICE_IN_AUX_DIGITAL), 98 STRING_TO_ENUM(AUDIO_DEVICE_IN_HDMI), 99 STRING_TO_ENUM(AUDIO_DEVICE_IN_TELEPHONY_RX), 100 STRING_TO_ENUM(AUDIO_DEVICE_IN_VOICE_CALL), 101 STRING_TO_ENUM(AUDIO_DEVICE_IN_BACK_MIC), 102 STRING_TO_ENUM(AUDIO_DEVICE_IN_REMOTE_SUBMIX), 103 STRING_TO_ENUM(AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET), 104 STRING_TO_ENUM(AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET), 105 STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_ACCESSORY), 106 STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_DEVICE), 107 STRING_TO_ENUM(AUDIO_DEVICE_IN_FM_TUNER), 108 STRING_TO_ENUM(AUDIO_DEVICE_IN_TV_TUNER), 109 STRING_TO_ENUM(AUDIO_DEVICE_IN_LINE), 110 STRING_TO_ENUM(AUDIO_DEVICE_IN_SPDIF), 111 STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_A2DP), 112 STRING_TO_ENUM(AUDIO_DEVICE_IN_LOOPBACK), 113 }; 114 115 const StringToEnum sOutputFlagNameToEnumTable[] = { 116 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DIRECT), 117 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_PRIMARY), 118 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_FAST), 119 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DEEP_BUFFER), 120 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD), 121 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_NON_BLOCKING), 122 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_HW_AV_SYNC), 123 }; 124 125 const StringToEnum sInputFlagNameToEnumTable[] = { 126 STRING_TO_ENUM(AUDIO_INPUT_FLAG_FAST), 127 STRING_TO_ENUM(AUDIO_INPUT_FLAG_HW_HOTWORD), 128 }; 129 130 const StringToEnum sFormatNameToEnumTable[] = { 131 STRING_TO_ENUM(AUDIO_FORMAT_PCM_16_BIT), 132 STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_BIT), 133 STRING_TO_ENUM(AUDIO_FORMAT_PCM_32_BIT), 134 STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_24_BIT), 135 STRING_TO_ENUM(AUDIO_FORMAT_PCM_FLOAT), 136 STRING_TO_ENUM(AUDIO_FORMAT_PCM_24_BIT_PACKED), 137 STRING_TO_ENUM(AUDIO_FORMAT_MP3), 138 STRING_TO_ENUM(AUDIO_FORMAT_AAC), 139 STRING_TO_ENUM(AUDIO_FORMAT_AAC_MAIN), 140 STRING_TO_ENUM(AUDIO_FORMAT_AAC_LC), 141 STRING_TO_ENUM(AUDIO_FORMAT_AAC_SSR), 142 STRING_TO_ENUM(AUDIO_FORMAT_AAC_LTP), 143 STRING_TO_ENUM(AUDIO_FORMAT_AAC_HE_V1), 144 STRING_TO_ENUM(AUDIO_FORMAT_AAC_SCALABLE), 145 STRING_TO_ENUM(AUDIO_FORMAT_AAC_ERLC), 146 STRING_TO_ENUM(AUDIO_FORMAT_AAC_LD), 147 STRING_TO_ENUM(AUDIO_FORMAT_AAC_HE_V2), 148 STRING_TO_ENUM(AUDIO_FORMAT_AAC_ELD), 149 STRING_TO_ENUM(AUDIO_FORMAT_VORBIS), 150 STRING_TO_ENUM(AUDIO_FORMAT_HE_AAC_V1), 151 STRING_TO_ENUM(AUDIO_FORMAT_HE_AAC_V2), 152 STRING_TO_ENUM(AUDIO_FORMAT_OPUS), 153 STRING_TO_ENUM(AUDIO_FORMAT_AC3), 154 STRING_TO_ENUM(AUDIO_FORMAT_E_AC3), 155 }; 156 157 const StringToEnum sOutChannelsNameToEnumTable[] = { 158 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_MONO), 159 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO), 160 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_QUAD), 161 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1), 162 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1), 163 }; 164 165 const StringToEnum sInChannelsNameToEnumTable[] = { 166 STRING_TO_ENUM(AUDIO_CHANNEL_IN_MONO), 167 STRING_TO_ENUM(AUDIO_CHANNEL_IN_STEREO), 168 STRING_TO_ENUM(AUDIO_CHANNEL_IN_FRONT_BACK), 169 }; 170 171 const StringToEnum sGainModeNameToEnumTable[] = { 172 STRING_TO_ENUM(AUDIO_GAIN_MODE_JOINT), 173 STRING_TO_ENUM(AUDIO_GAIN_MODE_CHANNELS), 174 STRING_TO_ENUM(AUDIO_GAIN_MODE_RAMP), 175 }; 176 177 178 uint32_t AudioPolicyManager::stringToEnum(const struct StringToEnum *table, 179 size_t size, 180 const char *name) 181 { 182 for (size_t i = 0; i < size; i++) { 183 if (strcmp(table[i].name, name) == 0) { 184 ALOGV("stringToEnum() found %s", table[i].name); 185 return table[i].value; 186 } 187 } 188 return 0; 189 } 190 191 const char *AudioPolicyManager::enumToString(const struct StringToEnum *table, 192 size_t size, 193 uint32_t value) 194 { 195 for (size_t i = 0; i < size; i++) { 196 if (table[i].value == value) { 197 return table[i].name; 198 } 199 } 200 return ""; 201 } 202 203 bool AudioPolicyManager::stringToBool(const char *value) 204 { 205 return ((strcasecmp("true", value) == 0) || (strcmp("1", value) == 0)); 206 } 207 208 209 // ---------------------------------------------------------------------------- 210 // AudioPolicyInterface implementation 211 // ---------------------------------------------------------------------------- 212 213 214 status_t AudioPolicyManager::setDeviceConnectionState(audio_devices_t device, 215 audio_policy_dev_state_t state, 216 const char *device_address) 217 { 218 String8 address = (device_address == NULL) ? String8("") : String8(device_address); 219 220 ALOGV("setDeviceConnectionState() device: %x, state %d, address %s", 221 device, state, address.string()); 222 223 // connect/disconnect only 1 device at a time 224 if (!audio_is_output_device(device) && !audio_is_input_device(device)) return BAD_VALUE; 225 226 // handle output devices 227 if (audio_is_output_device(device)) { 228 SortedVector <audio_io_handle_t> outputs; 229 230 sp<DeviceDescriptor> devDesc = new DeviceDescriptor(String8(""), device); 231 devDesc->mAddress = address; 232 ssize_t index = mAvailableOutputDevices.indexOf(devDesc); 233 234 // save a copy of the opened output descriptors before any output is opened or closed 235 // by checkOutputsForDevice(). This will be needed by checkOutputForAllStrategies() 236 mPreviousOutputs = mOutputs; 237 switch (state) 238 { 239 // handle output device connection 240 case AUDIO_POLICY_DEVICE_STATE_AVAILABLE: 241 if (index >= 0) { 242 ALOGW("setDeviceConnectionState() device already connected: %x", device); 243 return INVALID_OPERATION; 244 } 245 ALOGV("setDeviceConnectionState() connecting device %x", device); 246 247 // register new device as available 248 index = mAvailableOutputDevices.add(devDesc); 249 if (index >= 0) { 250 sp<HwModule> module = getModuleForDevice(device); 251 if (module == 0) { 252 ALOGD("setDeviceConnectionState() could not find HW module for device %08x", 253 device); 254 mAvailableOutputDevices.remove(devDesc); 255 return INVALID_OPERATION; 256 } 257 mAvailableOutputDevices[index]->mId = nextUniqueId(); 258 mAvailableOutputDevices[index]->mModule = module; 259 } else { 260 return NO_MEMORY; 261 } 262 263 if (checkOutputsForDevice(devDesc, state, outputs, address) != NO_ERROR) { 264 mAvailableOutputDevices.remove(devDesc); 265 return INVALID_OPERATION; 266 } 267 // outputs should never be empty here 268 ALOG_ASSERT(outputs.size() != 0, "setDeviceConnectionState():" 269 "checkOutputsForDevice() returned no outputs but status OK"); 270 ALOGV("setDeviceConnectionState() checkOutputsForDevice() returned %zu outputs", 271 outputs.size()); 272 break; 273 // handle output device disconnection 274 case AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE: { 275 if (index < 0) { 276 ALOGW("setDeviceConnectionState() device not connected: %x", device); 277 return INVALID_OPERATION; 278 } 279 280 ALOGV("setDeviceConnectionState() disconnecting output device %x", device); 281 282 // Set Disconnect to HALs 283 AudioParameter param = AudioParameter(address); 284 param.addInt(String8(AUDIO_PARAMETER_DEVICE_DISCONNECT), device); 285 mpClientInterface->setParameters(AUDIO_IO_HANDLE_NONE, param.toString()); 286 287 // remove device from available output devices 288 mAvailableOutputDevices.remove(devDesc); 289 290 checkOutputsForDevice(devDesc, state, outputs, address); 291 } break; 292 293 default: 294 ALOGE("setDeviceConnectionState() invalid state: %x", state); 295 return BAD_VALUE; 296 } 297 298 // checkA2dpSuspend must run before checkOutputForAllStrategies so that A2DP 299 // output is suspended before any tracks are moved to it 300 checkA2dpSuspend(); 301 checkOutputForAllStrategies(); 302 // outputs must be closed after checkOutputForAllStrategies() is executed 303 if (!outputs.isEmpty()) { 304 for (size_t i = 0; i < outputs.size(); i++) { 305 sp<AudioOutputDescriptor> desc = mOutputs.valueFor(outputs[i]); 306 // close unused outputs after device disconnection or direct outputs that have been 307 // opened by checkOutputsForDevice() to query dynamic parameters 308 if ((state == AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE) || 309 (((desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) != 0) && 310 (desc->mDirectOpenCount == 0))) { 311 closeOutput(outputs[i]); 312 } 313 } 314 // check again after closing A2DP output to reset mA2dpSuspended if needed 315 checkA2dpSuspend(); 316 } 317 318 updateDevicesAndOutputs(); 319 if (mPhoneState == AUDIO_MODE_IN_CALL) { 320 audio_devices_t newDevice = getNewOutputDevice(mPrimaryOutput, false /*fromCache*/); 321 updateCallRouting(newDevice); 322 } 323 for (size_t i = 0; i < mOutputs.size(); i++) { 324 audio_io_handle_t output = mOutputs.keyAt(i); 325 if ((mPhoneState != AUDIO_MODE_IN_CALL) || (output != mPrimaryOutput)) { 326 audio_devices_t newDevice = getNewOutputDevice(mOutputs.keyAt(i), 327 true /*fromCache*/); 328 // do not force device change on duplicated output because if device is 0, it will 329 // also force a device 0 for the two outputs it is duplicated to which may override 330 // a valid device selection on those outputs. 331 bool force = !mOutputs.valueAt(i)->isDuplicated() 332 && (!deviceDistinguishesOnAddress(device) 333 // always force when disconnecting (a non-duplicated device) 334 || (state == AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE)); 335 setOutputDevice(output, newDevice, force, 0); 336 } 337 } 338 339 mpClientInterface->onAudioPortListUpdate(); 340 return NO_ERROR; 341 } // end if is output device 342 343 // handle input devices 344 if (audio_is_input_device(device)) { 345 SortedVector <audio_io_handle_t> inputs; 346 347 sp<DeviceDescriptor> devDesc = new DeviceDescriptor(String8(""), device); 348 devDesc->mAddress = address; 349 ssize_t index = mAvailableInputDevices.indexOf(devDesc); 350 switch (state) 351 { 352 // handle input device connection 353 case AUDIO_POLICY_DEVICE_STATE_AVAILABLE: { 354 if (index >= 0) { 355 ALOGW("setDeviceConnectionState() device already connected: %d", device); 356 return INVALID_OPERATION; 357 } 358 sp<HwModule> module = getModuleForDevice(device); 359 if (module == NULL) { 360 ALOGW("setDeviceConnectionState(): could not find HW module for device %08x", 361 device); 362 return INVALID_OPERATION; 363 } 364 if (checkInputsForDevice(device, state, inputs, address) != NO_ERROR) { 365 return INVALID_OPERATION; 366 } 367 368 index = mAvailableInputDevices.add(devDesc); 369 if (index >= 0) { 370 mAvailableInputDevices[index]->mId = nextUniqueId(); 371 mAvailableInputDevices[index]->mModule = module; 372 } else { 373 return NO_MEMORY; 374 } 375 } break; 376 377 // handle input device disconnection 378 case AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE: { 379 if (index < 0) { 380 ALOGW("setDeviceConnectionState() device not connected: %d", device); 381 return INVALID_OPERATION; 382 } 383 384 ALOGV("setDeviceConnectionState() disconnecting input device %x", device); 385 386 // Set Disconnect to HALs 387 AudioParameter param = AudioParameter(address); 388 param.addInt(String8(AUDIO_PARAMETER_DEVICE_DISCONNECT), device); 389 mpClientInterface->setParameters(AUDIO_IO_HANDLE_NONE, param.toString()); 390 391 checkInputsForDevice(device, state, inputs, address); 392 mAvailableInputDevices.remove(devDesc); 393 394 } break; 395 396 default: 397 ALOGE("setDeviceConnectionState() invalid state: %x", state); 398 return BAD_VALUE; 399 } 400 401 closeAllInputs(); 402 403 if (mPhoneState == AUDIO_MODE_IN_CALL) { 404 audio_devices_t newDevice = getNewOutputDevice(mPrimaryOutput, false /*fromCache*/); 405 updateCallRouting(newDevice); 406 } 407 408 mpClientInterface->onAudioPortListUpdate(); 409 return NO_ERROR; 410 } // end if is input device 411 412 ALOGW("setDeviceConnectionState() invalid device: %x", device); 413 return BAD_VALUE; 414 } 415 416 audio_policy_dev_state_t AudioPolicyManager::getDeviceConnectionState(audio_devices_t device, 417 const char *device_address) 418 { 419 audio_policy_dev_state_t state = AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 420 sp<DeviceDescriptor> devDesc = new DeviceDescriptor(String8(""), device); 421 devDesc->mAddress = (device_address == NULL) ? String8("") : String8(device_address); 422 ssize_t index; 423 DeviceVector *deviceVector; 424 425 if (audio_is_output_device(device)) { 426 deviceVector = &mAvailableOutputDevices; 427 } else if (audio_is_input_device(device)) { 428 deviceVector = &mAvailableInputDevices; 429 } else { 430 ALOGW("getDeviceConnectionState() invalid device type %08x", device); 431 return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 432 } 433 434 index = deviceVector->indexOf(devDesc); 435 if (index >= 0) { 436 return AUDIO_POLICY_DEVICE_STATE_AVAILABLE; 437 } else { 438 return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 439 } 440 } 441 442 void AudioPolicyManager::updateCallRouting(audio_devices_t rxDevice, int delayMs) 443 { 444 bool createTxPatch = false; 445 struct audio_patch patch; 446 patch.num_sources = 1; 447 patch.num_sinks = 1; 448 status_t status; 449 audio_patch_handle_t afPatchHandle; 450 DeviceVector deviceList; 451 452 audio_devices_t txDevice = getDeviceForInputSource(AUDIO_SOURCE_VOICE_COMMUNICATION); 453 ALOGV("updateCallRouting device rxDevice %08x txDevice %08x", rxDevice, txDevice); 454 455 // release existing RX patch if any 456 if (mCallRxPatch != 0) { 457 mpClientInterface->releaseAudioPatch(mCallRxPatch->mAfPatchHandle, 0); 458 mCallRxPatch.clear(); 459 } 460 // release TX patch if any 461 if (mCallTxPatch != 0) { 462 mpClientInterface->releaseAudioPatch(mCallTxPatch->mAfPatchHandle, 0); 463 mCallTxPatch.clear(); 464 } 465 466 // If the RX device is on the primary HW module, then use legacy routing method for voice calls 467 // via setOutputDevice() on primary output. 468 // Otherwise, create two audio patches for TX and RX path. 469 if (availablePrimaryOutputDevices() & rxDevice) { 470 setOutputDevice(mPrimaryOutput, rxDevice, true, delayMs); 471 // If the TX device is also on the primary HW module, setOutputDevice() will take care 472 // of it due to legacy implementation. If not, create a patch. 473 if ((availablePrimaryInputDevices() & txDevice & ~AUDIO_DEVICE_BIT_IN) 474 == AUDIO_DEVICE_NONE) { 475 createTxPatch = true; 476 } 477 } else { 478 // create RX path audio patch 479 deviceList = mAvailableOutputDevices.getDevicesFromType(rxDevice); 480 ALOG_ASSERT(!deviceList.isEmpty(), 481 "updateCallRouting() selected device not in output device list"); 482 sp<DeviceDescriptor> rxSinkDeviceDesc = deviceList.itemAt(0); 483 deviceList = mAvailableInputDevices.getDevicesFromType(AUDIO_DEVICE_IN_TELEPHONY_RX); 484 ALOG_ASSERT(!deviceList.isEmpty(), 485 "updateCallRouting() no telephony RX device"); 486 sp<DeviceDescriptor> rxSourceDeviceDesc = deviceList.itemAt(0); 487 488 rxSourceDeviceDesc->toAudioPortConfig(&patch.sources[0]); 489 rxSinkDeviceDesc->toAudioPortConfig(&patch.sinks[0]); 490 491 // request to reuse existing output stream if one is already opened to reach the RX device 492 SortedVector<audio_io_handle_t> outputs = 493 getOutputsForDevice(rxDevice, mOutputs); 494 audio_io_handle_t output = selectOutput(outputs, 495 AUDIO_OUTPUT_FLAG_NONE, 496 AUDIO_FORMAT_INVALID); 497 if (output != AUDIO_IO_HANDLE_NONE) { 498 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 499 ALOG_ASSERT(!outputDesc->isDuplicated(), 500 "updateCallRouting() RX device output is duplicated"); 501 outputDesc->toAudioPortConfig(&patch.sources[1]); 502 patch.num_sources = 2; 503 } 504 505 afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 506 status = mpClientInterface->createAudioPatch(&patch, &afPatchHandle, 0); 507 ALOGW_IF(status != NO_ERROR, "updateCallRouting() error %d creating RX audio patch", 508 status); 509 if (status == NO_ERROR) { 510 mCallRxPatch = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 511 &patch, mUidCached); 512 mCallRxPatch->mAfPatchHandle = afPatchHandle; 513 mCallRxPatch->mUid = mUidCached; 514 } 515 createTxPatch = true; 516 } 517 if (createTxPatch) { 518 519 struct audio_patch patch; 520 patch.num_sources = 1; 521 patch.num_sinks = 1; 522 deviceList = mAvailableInputDevices.getDevicesFromType(txDevice); 523 ALOG_ASSERT(!deviceList.isEmpty(), 524 "updateCallRouting() selected device not in input device list"); 525 sp<DeviceDescriptor> txSourceDeviceDesc = deviceList.itemAt(0); 526 txSourceDeviceDesc->toAudioPortConfig(&patch.sources[0]); 527 deviceList = mAvailableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_TELEPHONY_TX); 528 ALOG_ASSERT(!deviceList.isEmpty(), 529 "updateCallRouting() no telephony TX device"); 530 sp<DeviceDescriptor> txSinkDeviceDesc = deviceList.itemAt(0); 531 txSinkDeviceDesc->toAudioPortConfig(&patch.sinks[0]); 532 533 SortedVector<audio_io_handle_t> outputs = 534 getOutputsForDevice(AUDIO_DEVICE_OUT_TELEPHONY_TX, mOutputs); 535 audio_io_handle_t output = selectOutput(outputs, 536 AUDIO_OUTPUT_FLAG_NONE, 537 AUDIO_FORMAT_INVALID); 538 // request to reuse existing output stream if one is already opened to reach the TX 539 // path output device 540 if (output != AUDIO_IO_HANDLE_NONE) { 541 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 542 ALOG_ASSERT(!outputDesc->isDuplicated(), 543 "updateCallRouting() RX device output is duplicated"); 544 outputDesc->toAudioPortConfig(&patch.sources[1]); 545 patch.num_sources = 2; 546 } 547 548 afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 549 status = mpClientInterface->createAudioPatch(&patch, &afPatchHandle, 0); 550 ALOGW_IF(status != NO_ERROR, "setPhoneState() error %d creating TX audio patch", 551 status); 552 if (status == NO_ERROR) { 553 mCallTxPatch = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 554 &patch, mUidCached); 555 mCallTxPatch->mAfPatchHandle = afPatchHandle; 556 mCallTxPatch->mUid = mUidCached; 557 } 558 } 559 } 560 561 void AudioPolicyManager::setPhoneState(audio_mode_t state) 562 { 563 ALOGV("setPhoneState() state %d", state); 564 if (state < 0 || state >= AUDIO_MODE_CNT) { 565 ALOGW("setPhoneState() invalid state %d", state); 566 return; 567 } 568 569 if (state == mPhoneState ) { 570 ALOGW("setPhoneState() setting same state %d", state); 571 return; 572 } 573 574 // if leaving call state, handle special case of active streams 575 // pertaining to sonification strategy see handleIncallSonification() 576 if (isInCall()) { 577 ALOGV("setPhoneState() in call state management: new state is %d", state); 578 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 579 handleIncallSonification((audio_stream_type_t)stream, false, true); 580 } 581 } 582 583 // store previous phone state for management of sonification strategy below 584 int oldState = mPhoneState; 585 mPhoneState = state; 586 bool force = false; 587 588 // are we entering or starting a call 589 if (!isStateInCall(oldState) && isStateInCall(state)) { 590 ALOGV(" Entering call in setPhoneState()"); 591 // force routing command to audio hardware when starting a call 592 // even if no device change is needed 593 force = true; 594 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { 595 mStreams[AUDIO_STREAM_DTMF].mVolumeCurve[j] = 596 sVolumeProfiles[AUDIO_STREAM_VOICE_CALL][j]; 597 } 598 } else if (isStateInCall(oldState) && !isStateInCall(state)) { 599 ALOGV(" Exiting call in setPhoneState()"); 600 // force routing command to audio hardware when exiting a call 601 // even if no device change is needed 602 force = true; 603 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { 604 mStreams[AUDIO_STREAM_DTMF].mVolumeCurve[j] = 605 sVolumeProfiles[AUDIO_STREAM_DTMF][j]; 606 } 607 } else if (isStateInCall(state) && (state != oldState)) { 608 ALOGV(" Switching between telephony and VoIP in setPhoneState()"); 609 // force routing command to audio hardware when switching between telephony and VoIP 610 // even if no device change is needed 611 force = true; 612 } 613 614 // check for device and output changes triggered by new phone state 615 checkA2dpSuspend(); 616 checkOutputForAllStrategies(); 617 updateDevicesAndOutputs(); 618 619 sp<AudioOutputDescriptor> hwOutputDesc = mOutputs.valueFor(mPrimaryOutput); 620 621 int delayMs = 0; 622 if (isStateInCall(state)) { 623 nsecs_t sysTime = systemTime(); 624 for (size_t i = 0; i < mOutputs.size(); i++) { 625 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 626 // mute media and sonification strategies and delay device switch by the largest 627 // latency of any output where either strategy is active. 628 // This avoid sending the ring tone or music tail into the earpiece or headset. 629 if ((desc->isStrategyActive(STRATEGY_MEDIA, 630 SONIFICATION_HEADSET_MUSIC_DELAY, 631 sysTime) || 632 desc->isStrategyActive(STRATEGY_SONIFICATION, 633 SONIFICATION_HEADSET_MUSIC_DELAY, 634 sysTime)) && 635 (delayMs < (int)desc->mLatency*2)) { 636 delayMs = desc->mLatency*2; 637 } 638 setStrategyMute(STRATEGY_MEDIA, true, mOutputs.keyAt(i)); 639 setStrategyMute(STRATEGY_MEDIA, false, mOutputs.keyAt(i), MUTE_TIME_MS, 640 getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/)); 641 setStrategyMute(STRATEGY_SONIFICATION, true, mOutputs.keyAt(i)); 642 setStrategyMute(STRATEGY_SONIFICATION, false, mOutputs.keyAt(i), MUTE_TIME_MS, 643 getDeviceForStrategy(STRATEGY_SONIFICATION, true /*fromCache*/)); 644 } 645 } 646 647 // Note that despite the fact that getNewOutputDevice() is called on the primary output, 648 // the device returned is not necessarily reachable via this output 649 audio_devices_t rxDevice = getNewOutputDevice(mPrimaryOutput, false /*fromCache*/); 650 // force routing command to audio hardware when ending call 651 // even if no device change is needed 652 if (isStateInCall(oldState) && rxDevice == AUDIO_DEVICE_NONE) { 653 rxDevice = hwOutputDesc->device(); 654 } 655 656 if (state == AUDIO_MODE_IN_CALL) { 657 updateCallRouting(rxDevice, delayMs); 658 } else if (oldState == AUDIO_MODE_IN_CALL) { 659 if (mCallRxPatch != 0) { 660 mpClientInterface->releaseAudioPatch(mCallRxPatch->mAfPatchHandle, 0); 661 mCallRxPatch.clear(); 662 } 663 if (mCallTxPatch != 0) { 664 mpClientInterface->releaseAudioPatch(mCallTxPatch->mAfPatchHandle, 0); 665 mCallTxPatch.clear(); 666 } 667 setOutputDevice(mPrimaryOutput, rxDevice, force, 0); 668 } else { 669 setOutputDevice(mPrimaryOutput, rxDevice, force, 0); 670 } 671 // if entering in call state, handle special case of active streams 672 // pertaining to sonification strategy see handleIncallSonification() 673 if (isStateInCall(state)) { 674 ALOGV("setPhoneState() in call state management: new state is %d", state); 675 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 676 handleIncallSonification((audio_stream_type_t)stream, true, true); 677 } 678 } 679 680 // Flag that ringtone volume must be limited to music volume until we exit MODE_RINGTONE 681 if (state == AUDIO_MODE_RINGTONE && 682 isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY)) { 683 mLimitRingtoneVolume = true; 684 } else { 685 mLimitRingtoneVolume = false; 686 } 687 } 688 689 void AudioPolicyManager::setForceUse(audio_policy_force_use_t usage, 690 audio_policy_forced_cfg_t config) 691 { 692 ALOGV("setForceUse() usage %d, config %d, mPhoneState %d", usage, config, mPhoneState); 693 694 bool forceVolumeReeval = false; 695 switch(usage) { 696 case AUDIO_POLICY_FORCE_FOR_COMMUNICATION: 697 if (config != AUDIO_POLICY_FORCE_SPEAKER && config != AUDIO_POLICY_FORCE_BT_SCO && 698 config != AUDIO_POLICY_FORCE_NONE) { 699 ALOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config); 700 return; 701 } 702 forceVolumeReeval = true; 703 mForceUse[usage] = config; 704 break; 705 case AUDIO_POLICY_FORCE_FOR_MEDIA: 706 if (config != AUDIO_POLICY_FORCE_HEADPHONES && config != AUDIO_POLICY_FORCE_BT_A2DP && 707 config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && 708 config != AUDIO_POLICY_FORCE_ANALOG_DOCK && 709 config != AUDIO_POLICY_FORCE_DIGITAL_DOCK && config != AUDIO_POLICY_FORCE_NONE && 710 config != AUDIO_POLICY_FORCE_NO_BT_A2DP) { 711 ALOGW("setForceUse() invalid config %d for FOR_MEDIA", config); 712 return; 713 } 714 mForceUse[usage] = config; 715 break; 716 case AUDIO_POLICY_FORCE_FOR_RECORD: 717 if (config != AUDIO_POLICY_FORCE_BT_SCO && config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && 718 config != AUDIO_POLICY_FORCE_NONE) { 719 ALOGW("setForceUse() invalid config %d for FOR_RECORD", config); 720 return; 721 } 722 mForceUse[usage] = config; 723 break; 724 case AUDIO_POLICY_FORCE_FOR_DOCK: 725 if (config != AUDIO_POLICY_FORCE_NONE && config != AUDIO_POLICY_FORCE_BT_CAR_DOCK && 726 config != AUDIO_POLICY_FORCE_BT_DESK_DOCK && 727 config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && 728 config != AUDIO_POLICY_FORCE_ANALOG_DOCK && 729 config != AUDIO_POLICY_FORCE_DIGITAL_DOCK) { 730 ALOGW("setForceUse() invalid config %d for FOR_DOCK", config); 731 } 732 forceVolumeReeval = true; 733 mForceUse[usage] = config; 734 break; 735 case AUDIO_POLICY_FORCE_FOR_SYSTEM: 736 if (config != AUDIO_POLICY_FORCE_NONE && 737 config != AUDIO_POLICY_FORCE_SYSTEM_ENFORCED) { 738 ALOGW("setForceUse() invalid config %d for FOR_SYSTEM", config); 739 } 740 forceVolumeReeval = true; 741 mForceUse[usage] = config; 742 break; 743 case AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO: 744 if (config != AUDIO_POLICY_FORCE_NONE && 745 config != AUDIO_POLICY_FORCE_HDMI_SYSTEM_AUDIO_ENFORCED) { 746 ALOGW("setForceUse() invalid config %d forHDMI_SYSTEM_AUDIO", config); 747 } 748 mForceUse[usage] = config; 749 break; 750 default: 751 ALOGW("setForceUse() invalid usage %d", usage); 752 break; 753 } 754 755 // check for device and output changes triggered by new force usage 756 checkA2dpSuspend(); 757 checkOutputForAllStrategies(); 758 updateDevicesAndOutputs(); 759 if (mPhoneState == AUDIO_MODE_IN_CALL) { 760 audio_devices_t newDevice = getNewOutputDevice(mPrimaryOutput, true /*fromCache*/); 761 updateCallRouting(newDevice); 762 } 763 for (size_t i = 0; i < mOutputs.size(); i++) { 764 audio_io_handle_t output = mOutputs.keyAt(i); 765 audio_devices_t newDevice = getNewOutputDevice(output, true /*fromCache*/); 766 if ((mPhoneState != AUDIO_MODE_IN_CALL) || (output != mPrimaryOutput)) { 767 setOutputDevice(output, newDevice, (newDevice != AUDIO_DEVICE_NONE)); 768 } 769 if (forceVolumeReeval && (newDevice != AUDIO_DEVICE_NONE)) { 770 applyStreamVolumes(output, newDevice, 0, true); 771 } 772 } 773 774 audio_io_handle_t activeInput = getActiveInput(); 775 if (activeInput != 0) { 776 setInputDevice(activeInput, getNewInputDevice(activeInput)); 777 } 778 779 } 780 781 audio_policy_forced_cfg_t AudioPolicyManager::getForceUse(audio_policy_force_use_t usage) 782 { 783 return mForceUse[usage]; 784 } 785 786 void AudioPolicyManager::setSystemProperty(const char* property, const char* value) 787 { 788 ALOGV("setSystemProperty() property %s, value %s", property, value); 789 } 790 791 // Find a direct output profile compatible with the parameters passed, even if the input flags do 792 // not explicitly request a direct output 793 sp<AudioPolicyManager::IOProfile> AudioPolicyManager::getProfileForDirectOutput( 794 audio_devices_t device, 795 uint32_t samplingRate, 796 audio_format_t format, 797 audio_channel_mask_t channelMask, 798 audio_output_flags_t flags) 799 { 800 for (size_t i = 0; i < mHwModules.size(); i++) { 801 if (mHwModules[i]->mHandle == 0) { 802 continue; 803 } 804 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) { 805 sp<IOProfile> profile = mHwModules[i]->mOutputProfiles[j]; 806 bool found = profile->isCompatibleProfile(device, samplingRate, 807 NULL /*updatedSamplingRate*/, format, channelMask, 808 flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD ? 809 AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD : AUDIO_OUTPUT_FLAG_DIRECT); 810 if (found && (mAvailableOutputDevices.types() & profile->mSupportedDevices.types())) { 811 return profile; 812 } 813 } 814 } 815 return 0; 816 } 817 818 audio_io_handle_t AudioPolicyManager::getOutput(audio_stream_type_t stream, 819 uint32_t samplingRate, 820 audio_format_t format, 821 audio_channel_mask_t channelMask, 822 audio_output_flags_t flags, 823 const audio_offload_info_t *offloadInfo) 824 { 825 826 routing_strategy strategy = getStrategy(stream); 827 audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/); 828 ALOGV("getOutput() device %d, stream %d, samplingRate %d, format %x, channelMask %x, flags %x", 829 device, stream, samplingRate, format, channelMask, flags); 830 831 return getOutputForDevice(device, stream, samplingRate,format, channelMask, flags, 832 offloadInfo); 833 } 834 835 audio_io_handle_t AudioPolicyManager::getOutputForAttr(const audio_attributes_t *attr, 836 uint32_t samplingRate, 837 audio_format_t format, 838 audio_channel_mask_t channelMask, 839 audio_output_flags_t flags, 840 const audio_offload_info_t *offloadInfo) 841 { 842 if (attr == NULL) { 843 ALOGE("getOutputForAttr() called with NULL audio attributes"); 844 return 0; 845 } 846 ALOGV("getOutputForAttr() usage=%d, content=%d, tag=%s flags=%08x", 847 attr->usage, attr->content_type, attr->tags, attr->flags); 848 849 // TODO this is where filtering for custom policies (rerouting, dynamic sources) will go 850 routing_strategy strategy = (routing_strategy) getStrategyForAttr(attr); 851 audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/); 852 853 if ((attr->flags & AUDIO_FLAG_HW_AV_SYNC) != 0) { 854 flags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_HW_AV_SYNC); 855 } 856 857 ALOGV("getOutputForAttr() device %d, samplingRate %d, format %x, channelMask %x, flags %x", 858 device, samplingRate, format, channelMask, flags); 859 860 audio_stream_type_t stream = streamTypefromAttributesInt(attr); 861 return getOutputForDevice(device, stream, samplingRate, format, channelMask, flags, 862 offloadInfo); 863 } 864 865 audio_io_handle_t AudioPolicyManager::getOutputForDevice( 866 audio_devices_t device, 867 audio_stream_type_t stream, 868 uint32_t samplingRate, 869 audio_format_t format, 870 audio_channel_mask_t channelMask, 871 audio_output_flags_t flags, 872 const audio_offload_info_t *offloadInfo) 873 { 874 audio_io_handle_t output = AUDIO_IO_HANDLE_NONE; 875 uint32_t latency = 0; 876 status_t status; 877 878 #ifdef AUDIO_POLICY_TEST 879 if (mCurOutput != 0) { 880 ALOGV("getOutput() test output mCurOutput %d, samplingRate %d, format %d, channelMask %x, mDirectOutput %d", 881 mCurOutput, mTestSamplingRate, mTestFormat, mTestChannels, mDirectOutput); 882 883 if (mTestOutputs[mCurOutput] == 0) { 884 ALOGV("getOutput() opening test output"); 885 sp<AudioOutputDescriptor> outputDesc = new AudioOutputDescriptor(NULL); 886 outputDesc->mDevice = mTestDevice; 887 outputDesc->mLatency = mTestLatencyMs; 888 outputDesc->mFlags = 889 (audio_output_flags_t)(mDirectOutput ? AUDIO_OUTPUT_FLAG_DIRECT : 0); 890 outputDesc->mRefCount[stream] = 0; 891 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 892 config.sample_rate = mTestSamplingRate; 893 config.channel_mask = mTestChannels; 894 config.format = mTestFormat; 895 if (offloadInfo != NULL) { 896 config.offload_info = *offloadInfo; 897 } 898 status = mpClientInterface->openOutput(0, 899 &mTestOutputs[mCurOutput], 900 &config, 901 &outputDesc->mDevice, 902 String8(""), 903 &outputDesc->mLatency, 904 outputDesc->mFlags); 905 if (status == NO_ERROR) { 906 outputDesc->mSamplingRate = config.sample_rate; 907 outputDesc->mFormat = config.format; 908 outputDesc->mChannelMask = config.channel_mask; 909 AudioParameter outputCmd = AudioParameter(); 910 outputCmd.addInt(String8("set_id"),mCurOutput); 911 mpClientInterface->setParameters(mTestOutputs[mCurOutput],outputCmd.toString()); 912 addOutput(mTestOutputs[mCurOutput], outputDesc); 913 } 914 } 915 return mTestOutputs[mCurOutput]; 916 } 917 #endif //AUDIO_POLICY_TEST 918 919 // open a direct output if required by specified parameters 920 //force direct flag if offload flag is set: offloading implies a direct output stream 921 // and all common behaviors are driven by checking only the direct flag 922 // this should normally be set appropriately in the policy configuration file 923 if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) { 924 flags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_DIRECT); 925 } 926 if ((flags & AUDIO_OUTPUT_FLAG_HW_AV_SYNC) != 0) { 927 flags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_DIRECT); 928 } 929 930 sp<IOProfile> profile; 931 932 // skip direct output selection if the request can obviously be attached to a mixed output 933 // and not explicitly requested 934 if (((flags & AUDIO_OUTPUT_FLAG_DIRECT) == 0) && 935 audio_is_linear_pcm(format) && samplingRate <= MAX_MIXER_SAMPLING_RATE && 936 audio_channel_count_from_out_mask(channelMask) <= 2) { 937 goto non_direct_output; 938 } 939 940 // Do not allow offloading if one non offloadable effect is enabled. This prevents from 941 // creating an offloaded track and tearing it down immediately after start when audioflinger 942 // detects there is an active non offloadable effect. 943 // FIXME: We should check the audio session here but we do not have it in this context. 944 // This may prevent offloading in rare situations where effects are left active by apps 945 // in the background. 946 947 if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) || 948 !isNonOffloadableEffectEnabled()) { 949 profile = getProfileForDirectOutput(device, 950 samplingRate, 951 format, 952 channelMask, 953 (audio_output_flags_t)flags); 954 } 955 956 if (profile != 0) { 957 sp<AudioOutputDescriptor> outputDesc = NULL; 958 959 for (size_t i = 0; i < mOutputs.size(); i++) { 960 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 961 if (!desc->isDuplicated() && (profile == desc->mProfile)) { 962 outputDesc = desc; 963 // reuse direct output if currently open and configured with same parameters 964 if ((samplingRate == outputDesc->mSamplingRate) && 965 (format == outputDesc->mFormat) && 966 (channelMask == outputDesc->mChannelMask)) { 967 outputDesc->mDirectOpenCount++; 968 ALOGV("getOutput() reusing direct output %d", mOutputs.keyAt(i)); 969 return mOutputs.keyAt(i); 970 } 971 } 972 } 973 // close direct output if currently open and configured with different parameters 974 if (outputDesc != NULL) { 975 closeOutput(outputDesc->mIoHandle); 976 } 977 outputDesc = new AudioOutputDescriptor(profile); 978 outputDesc->mDevice = device; 979 outputDesc->mLatency = 0; 980 outputDesc->mFlags =(audio_output_flags_t) (outputDesc->mFlags | flags); 981 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 982 config.sample_rate = samplingRate; 983 config.channel_mask = channelMask; 984 config.format = format; 985 if (offloadInfo != NULL) { 986 config.offload_info = *offloadInfo; 987 } 988 status = mpClientInterface->openOutput(profile->mModule->mHandle, 989 &output, 990 &config, 991 &outputDesc->mDevice, 992 String8(""), 993 &outputDesc->mLatency, 994 outputDesc->mFlags); 995 996 // only accept an output with the requested parameters 997 if (status != NO_ERROR || 998 (samplingRate != 0 && samplingRate != config.sample_rate) || 999 (format != AUDIO_FORMAT_DEFAULT && format != config.format) || 1000 (channelMask != 0 && channelMask != config.channel_mask)) { 1001 ALOGV("getOutput() failed opening direct output: output %d samplingRate %d %d," 1002 "format %d %d, channelMask %04x %04x", output, samplingRate, 1003 outputDesc->mSamplingRate, format, outputDesc->mFormat, channelMask, 1004 outputDesc->mChannelMask); 1005 if (output != AUDIO_IO_HANDLE_NONE) { 1006 mpClientInterface->closeOutput(output); 1007 } 1008 return AUDIO_IO_HANDLE_NONE; 1009 } 1010 outputDesc->mSamplingRate = config.sample_rate; 1011 outputDesc->mChannelMask = config.channel_mask; 1012 outputDesc->mFormat = config.format; 1013 outputDesc->mRefCount[stream] = 0; 1014 outputDesc->mStopTime[stream] = 0; 1015 outputDesc->mDirectOpenCount = 1; 1016 1017 audio_io_handle_t srcOutput = getOutputForEffect(); 1018 addOutput(output, outputDesc); 1019 audio_io_handle_t dstOutput = getOutputForEffect(); 1020 if (dstOutput == output) { 1021 mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, srcOutput, dstOutput); 1022 } 1023 mPreviousOutputs = mOutputs; 1024 ALOGV("getOutput() returns new direct output %d", output); 1025 mpClientInterface->onAudioPortListUpdate(); 1026 return output; 1027 } 1028 1029 non_direct_output: 1030 1031 // ignoring channel mask due to downmix capability in mixer 1032 1033 // open a non direct output 1034 1035 // for non direct outputs, only PCM is supported 1036 if (audio_is_linear_pcm(format)) { 1037 // get which output is suitable for the specified stream. The actual 1038 // routing change will happen when startOutput() will be called 1039 SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(device, mOutputs); 1040 1041 // at this stage we should ignore the DIRECT flag as no direct output could be found earlier 1042 flags = (audio_output_flags_t)(flags & ~AUDIO_OUTPUT_FLAG_DIRECT); 1043 output = selectOutput(outputs, flags, format); 1044 } 1045 ALOGW_IF((output == 0), "getOutput() could not find output for stream %d, samplingRate %d," 1046 "format %d, channels %x, flags %x", stream, samplingRate, format, channelMask, flags); 1047 1048 ALOGV("getOutput() returns output %d", output); 1049 1050 return output; 1051 } 1052 1053 audio_io_handle_t AudioPolicyManager::selectOutput(const SortedVector<audio_io_handle_t>& outputs, 1054 audio_output_flags_t flags, 1055 audio_format_t format) 1056 { 1057 // select one output among several that provide a path to a particular device or set of 1058 // devices (the list was previously build by getOutputsForDevice()). 1059 // The priority is as follows: 1060 // 1: the output with the highest number of requested policy flags 1061 // 2: the primary output 1062 // 3: the first output in the list 1063 1064 if (outputs.size() == 0) { 1065 return 0; 1066 } 1067 if (outputs.size() == 1) { 1068 return outputs[0]; 1069 } 1070 1071 int maxCommonFlags = 0; 1072 audio_io_handle_t outputFlags = 0; 1073 audio_io_handle_t outputPrimary = 0; 1074 1075 for (size_t i = 0; i < outputs.size(); i++) { 1076 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(outputs[i]); 1077 if (!outputDesc->isDuplicated()) { 1078 // if a valid format is specified, skip output if not compatible 1079 if (format != AUDIO_FORMAT_INVALID) { 1080 if (outputDesc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) { 1081 if (format != outputDesc->mFormat) { 1082 continue; 1083 } 1084 } else if (!audio_is_linear_pcm(format)) { 1085 continue; 1086 } 1087 } 1088 1089 int commonFlags = popcount(outputDesc->mProfile->mFlags & flags); 1090 if (commonFlags > maxCommonFlags) { 1091 outputFlags = outputs[i]; 1092 maxCommonFlags = commonFlags; 1093 ALOGV("selectOutput() commonFlags for output %d, %04x", outputs[i], commonFlags); 1094 } 1095 if (outputDesc->mProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) { 1096 outputPrimary = outputs[i]; 1097 } 1098 } 1099 } 1100 1101 if (outputFlags != 0) { 1102 return outputFlags; 1103 } 1104 if (outputPrimary != 0) { 1105 return outputPrimary; 1106 } 1107 1108 return outputs[0]; 1109 } 1110 1111 status_t AudioPolicyManager::startOutput(audio_io_handle_t output, 1112 audio_stream_type_t stream, 1113 int session) 1114 { 1115 ALOGV("startOutput() output %d, stream %d, session %d", output, stream, session); 1116 ssize_t index = mOutputs.indexOfKey(output); 1117 if (index < 0) { 1118 ALOGW("startOutput() unknown output %d", output); 1119 return BAD_VALUE; 1120 } 1121 1122 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(index); 1123 1124 // increment usage count for this stream on the requested output: 1125 // NOTE that the usage count is the same for duplicated output and hardware output which is 1126 // necessary for a correct control of hardware output routing by startOutput() and stopOutput() 1127 outputDesc->changeRefCount(stream, 1); 1128 1129 if (outputDesc->mRefCount[stream] == 1) { 1130 audio_devices_t newDevice = getNewOutputDevice(output, false /*fromCache*/); 1131 routing_strategy strategy = getStrategy(stream); 1132 bool shouldWait = (strategy == STRATEGY_SONIFICATION) || 1133 (strategy == STRATEGY_SONIFICATION_RESPECTFUL); 1134 uint32_t waitMs = 0; 1135 bool force = false; 1136 for (size_t i = 0; i < mOutputs.size(); i++) { 1137 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 1138 if (desc != outputDesc) { 1139 // force a device change if any other output is managed by the same hw 1140 // module and has a current device selection that differs from selected device. 1141 // In this case, the audio HAL must receive the new device selection so that it can 1142 // change the device currently selected by the other active output. 1143 if (outputDesc->sharesHwModuleWith(desc) && 1144 desc->device() != newDevice) { 1145 force = true; 1146 } 1147 // wait for audio on other active outputs to be presented when starting 1148 // a notification so that audio focus effect can propagate. 1149 uint32_t latency = desc->latency(); 1150 if (shouldWait && desc->isActive(latency * 2) && (waitMs < latency)) { 1151 waitMs = latency; 1152 } 1153 } 1154 } 1155 uint32_t muteWaitMs = setOutputDevice(output, newDevice, force); 1156 1157 // handle special case for sonification while in call 1158 if (isInCall()) { 1159 handleIncallSonification(stream, true, false); 1160 } 1161 1162 // apply volume rules for current stream and device if necessary 1163 checkAndSetVolume(stream, 1164 mStreams[stream].getVolumeIndex(newDevice), 1165 output, 1166 newDevice); 1167 1168 // update the outputs if starting an output with a stream that can affect notification 1169 // routing 1170 handleNotificationRoutingForStream(stream); 1171 if (waitMs > muteWaitMs) { 1172 usleep((waitMs - muteWaitMs) * 2 * 1000); 1173 } 1174 } 1175 return NO_ERROR; 1176 } 1177 1178 1179 status_t AudioPolicyManager::stopOutput(audio_io_handle_t output, 1180 audio_stream_type_t stream, 1181 int session) 1182 { 1183 ALOGV("stopOutput() output %d, stream %d, session %d", output, stream, session); 1184 ssize_t index = mOutputs.indexOfKey(output); 1185 if (index < 0) { 1186 ALOGW("stopOutput() unknown output %d", output); 1187 return BAD_VALUE; 1188 } 1189 1190 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(index); 1191 1192 // handle special case for sonification while in call 1193 if (isInCall()) { 1194 handleIncallSonification(stream, false, false); 1195 } 1196 1197 if (outputDesc->mRefCount[stream] > 0) { 1198 // decrement usage count of this stream on the output 1199 outputDesc->changeRefCount(stream, -1); 1200 // store time at which the stream was stopped - see isStreamActive() 1201 if (outputDesc->mRefCount[stream] == 0) { 1202 outputDesc->mStopTime[stream] = systemTime(); 1203 audio_devices_t newDevice = getNewOutputDevice(output, false /*fromCache*/); 1204 // delay the device switch by twice the latency because stopOutput() is executed when 1205 // the track stop() command is received and at that time the audio track buffer can 1206 // still contain data that needs to be drained. The latency only covers the audio HAL 1207 // and kernel buffers. Also the latency does not always include additional delay in the 1208 // audio path (audio DSP, CODEC ...) 1209 setOutputDevice(output, newDevice, false, outputDesc->mLatency*2); 1210 1211 // force restoring the device selection on other active outputs if it differs from the 1212 // one being selected for this output 1213 for (size_t i = 0; i < mOutputs.size(); i++) { 1214 audio_io_handle_t curOutput = mOutputs.keyAt(i); 1215 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 1216 if (curOutput != output && 1217 desc->isActive() && 1218 outputDesc->sharesHwModuleWith(desc) && 1219 (newDevice != desc->device())) { 1220 setOutputDevice(curOutput, 1221 getNewOutputDevice(curOutput, false /*fromCache*/), 1222 true, 1223 outputDesc->mLatency*2); 1224 } 1225 } 1226 // update the outputs if stopping one with a stream that can affect notification routing 1227 handleNotificationRoutingForStream(stream); 1228 } 1229 return NO_ERROR; 1230 } else { 1231 ALOGW("stopOutput() refcount is already 0 for output %d", output); 1232 return INVALID_OPERATION; 1233 } 1234 } 1235 1236 void AudioPolicyManager::releaseOutput(audio_io_handle_t output) 1237 { 1238 ALOGV("releaseOutput() %d", output); 1239 ssize_t index = mOutputs.indexOfKey(output); 1240 if (index < 0) { 1241 ALOGW("releaseOutput() releasing unknown output %d", output); 1242 return; 1243 } 1244 1245 #ifdef AUDIO_POLICY_TEST 1246 int testIndex = testOutputIndex(output); 1247 if (testIndex != 0) { 1248 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(index); 1249 if (outputDesc->isActive()) { 1250 mpClientInterface->closeOutput(output); 1251 mOutputs.removeItem(output); 1252 mTestOutputs[testIndex] = 0; 1253 } 1254 return; 1255 } 1256 #endif //AUDIO_POLICY_TEST 1257 1258 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(index); 1259 if (desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) { 1260 if (desc->mDirectOpenCount <= 0) { 1261 ALOGW("releaseOutput() invalid open count %d for output %d", 1262 desc->mDirectOpenCount, output); 1263 return; 1264 } 1265 if (--desc->mDirectOpenCount == 0) { 1266 closeOutput(output); 1267 // If effects where present on the output, audioflinger moved them to the primary 1268 // output by default: move them back to the appropriate output. 1269 audio_io_handle_t dstOutput = getOutputForEffect(); 1270 if (dstOutput != mPrimaryOutput) { 1271 mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, mPrimaryOutput, dstOutput); 1272 } 1273 mpClientInterface->onAudioPortListUpdate(); 1274 } 1275 } 1276 } 1277 1278 1279 audio_io_handle_t AudioPolicyManager::getInput(audio_source_t inputSource, 1280 uint32_t samplingRate, 1281 audio_format_t format, 1282 audio_channel_mask_t channelMask, 1283 audio_session_t session, 1284 audio_input_flags_t flags) 1285 { 1286 ALOGV("getInput() inputSource %d, samplingRate %d, format %d, channelMask %x, session %d, " 1287 "flags %#x", 1288 inputSource, samplingRate, format, channelMask, session, flags); 1289 1290 audio_devices_t device = getDeviceForInputSource(inputSource); 1291 1292 if (device == AUDIO_DEVICE_NONE) { 1293 ALOGW("getInput() could not find device for inputSource %d", inputSource); 1294 return AUDIO_IO_HANDLE_NONE; 1295 } 1296 1297 // adapt channel selection to input source 1298 switch (inputSource) { 1299 case AUDIO_SOURCE_VOICE_UPLINK: 1300 channelMask = AUDIO_CHANNEL_IN_VOICE_UPLINK; 1301 break; 1302 case AUDIO_SOURCE_VOICE_DOWNLINK: 1303 channelMask = AUDIO_CHANNEL_IN_VOICE_DNLINK; 1304 break; 1305 case AUDIO_SOURCE_VOICE_CALL: 1306 channelMask = AUDIO_CHANNEL_IN_VOICE_UPLINK | AUDIO_CHANNEL_IN_VOICE_DNLINK; 1307 break; 1308 default: 1309 break; 1310 } 1311 1312 audio_io_handle_t input = AUDIO_IO_HANDLE_NONE; 1313 bool isSoundTrigger = false; 1314 audio_source_t halInputSource = inputSource; 1315 if (inputSource == AUDIO_SOURCE_HOTWORD) { 1316 ssize_t index = mSoundTriggerSessions.indexOfKey(session); 1317 if (index >= 0) { 1318 input = mSoundTriggerSessions.valueFor(session); 1319 isSoundTrigger = true; 1320 flags = (audio_input_flags_t)(flags | AUDIO_INPUT_FLAG_HW_HOTWORD); 1321 ALOGV("SoundTrigger capture on session %d input %d", session, input); 1322 } else { 1323 halInputSource = AUDIO_SOURCE_VOICE_RECOGNITION; 1324 } 1325 } 1326 1327 sp<IOProfile> profile = getInputProfile(device, 1328 samplingRate, 1329 format, 1330 channelMask, 1331 flags); 1332 if (profile == 0) { 1333 //retry without flags 1334 audio_input_flags_t log_flags = flags; 1335 flags = AUDIO_INPUT_FLAG_NONE; 1336 profile = getInputProfile(device, 1337 samplingRate, 1338 format, 1339 channelMask, 1340 flags); 1341 if (profile == 0) { 1342 ALOGW("getInput() could not find profile for device 0x%X, samplingRate %u, format %#x, " 1343 "channelMask 0x%X, flags %#x", 1344 device, samplingRate, format, channelMask, log_flags); 1345 return AUDIO_IO_HANDLE_NONE; 1346 } 1347 } 1348 1349 if (profile->mModule->mHandle == 0) { 1350 ALOGE("getInput(): HW module %s not opened", profile->mModule->mName); 1351 return AUDIO_IO_HANDLE_NONE; 1352 } 1353 1354 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 1355 config.sample_rate = samplingRate; 1356 config.channel_mask = channelMask; 1357 config.format = format; 1358 1359 status_t status = mpClientInterface->openInput(profile->mModule->mHandle, 1360 &input, 1361 &config, 1362 &device, 1363 String8(""), 1364 halInputSource, 1365 flags); 1366 1367 // only accept input with the exact requested set of parameters 1368 if (status != NO_ERROR || 1369 (samplingRate != config.sample_rate) || 1370 (format != config.format) || 1371 (channelMask != config.channel_mask)) { 1372 ALOGW("getInput() failed opening input: samplingRate %d, format %d, channelMask %x", 1373 samplingRate, format, channelMask); 1374 if (input != AUDIO_IO_HANDLE_NONE) { 1375 mpClientInterface->closeInput(input); 1376 } 1377 return AUDIO_IO_HANDLE_NONE; 1378 } 1379 1380 sp<AudioInputDescriptor> inputDesc = new AudioInputDescriptor(profile); 1381 inputDesc->mInputSource = inputSource; 1382 inputDesc->mRefCount = 0; 1383 inputDesc->mOpenRefCount = 1; 1384 inputDesc->mSamplingRate = samplingRate; 1385 inputDesc->mFormat = format; 1386 inputDesc->mChannelMask = channelMask; 1387 inputDesc->mDevice = device; 1388 inputDesc->mSessions.add(session); 1389 inputDesc->mIsSoundTrigger = isSoundTrigger; 1390 1391 addInput(input, inputDesc); 1392 mpClientInterface->onAudioPortListUpdate(); 1393 return input; 1394 } 1395 1396 status_t AudioPolicyManager::startInput(audio_io_handle_t input, 1397 audio_session_t session) 1398 { 1399 ALOGV("startInput() input %d", input); 1400 ssize_t index = mInputs.indexOfKey(input); 1401 if (index < 0) { 1402 ALOGW("startInput() unknown input %d", input); 1403 return BAD_VALUE; 1404 } 1405 sp<AudioInputDescriptor> inputDesc = mInputs.valueAt(index); 1406 1407 index = inputDesc->mSessions.indexOf(session); 1408 if (index < 0) { 1409 ALOGW("startInput() unknown session %d on input %d", session, input); 1410 return BAD_VALUE; 1411 } 1412 1413 // virtual input devices are compatible with other input devices 1414 if (!isVirtualInputDevice(inputDesc->mDevice)) { 1415 1416 // for a non-virtual input device, check if there is another (non-virtual) active input 1417 audio_io_handle_t activeInput = getActiveInput(); 1418 if (activeInput != 0 && activeInput != input) { 1419 1420 // If the already active input uses AUDIO_SOURCE_HOTWORD then it is closed, 1421 // otherwise the active input continues and the new input cannot be started. 1422 sp<AudioInputDescriptor> activeDesc = mInputs.valueFor(activeInput); 1423 if (activeDesc->mInputSource == AUDIO_SOURCE_HOTWORD) { 1424 ALOGW("startInput(%d) preempting low-priority input %d", input, activeInput); 1425 stopInput(activeInput, activeDesc->mSessions.itemAt(0)); 1426 releaseInput(activeInput, activeDesc->mSessions.itemAt(0)); 1427 } else { 1428 ALOGE("startInput(%d) failed: other input %d already started", input, activeInput); 1429 return INVALID_OPERATION; 1430 } 1431 } 1432 } 1433 1434 if (inputDesc->mRefCount == 0) { 1435 if (activeInputsCount() == 0) { 1436 SoundTrigger::setCaptureState(true); 1437 } 1438 setInputDevice(input, getNewInputDevice(input), true /* force */); 1439 1440 // Automatically enable the remote submix output when input is started. 1441 // For remote submix (a virtual device), we open only one input per capture request. 1442 if (audio_is_remote_submix_device(inputDesc->mDevice)) { 1443 setDeviceConnectionState(AUDIO_DEVICE_OUT_REMOTE_SUBMIX, 1444 AUDIO_POLICY_DEVICE_STATE_AVAILABLE, AUDIO_REMOTE_SUBMIX_DEVICE_ADDRESS); 1445 } 1446 } 1447 1448 ALOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource); 1449 1450 inputDesc->mRefCount++; 1451 return NO_ERROR; 1452 } 1453 1454 status_t AudioPolicyManager::stopInput(audio_io_handle_t input, 1455 audio_session_t session) 1456 { 1457 ALOGV("stopInput() input %d", input); 1458 ssize_t index = mInputs.indexOfKey(input); 1459 if (index < 0) { 1460 ALOGW("stopInput() unknown input %d", input); 1461 return BAD_VALUE; 1462 } 1463 sp<AudioInputDescriptor> inputDesc = mInputs.valueAt(index); 1464 1465 index = inputDesc->mSessions.indexOf(session); 1466 if (index < 0) { 1467 ALOGW("stopInput() unknown session %d on input %d", session, input); 1468 return BAD_VALUE; 1469 } 1470 1471 if (inputDesc->mRefCount == 0) { 1472 ALOGW("stopInput() input %d already stopped", input); 1473 return INVALID_OPERATION; 1474 } 1475 1476 inputDesc->mRefCount--; 1477 if (inputDesc->mRefCount == 0) { 1478 1479 // automatically disable the remote submix output when input is stopped 1480 if (audio_is_remote_submix_device(inputDesc->mDevice)) { 1481 setDeviceConnectionState(AUDIO_DEVICE_OUT_REMOTE_SUBMIX, 1482 AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE, AUDIO_REMOTE_SUBMIX_DEVICE_ADDRESS); 1483 } 1484 1485 resetInputDevice(input); 1486 1487 if (activeInputsCount() == 0) { 1488 SoundTrigger::setCaptureState(false); 1489 } 1490 } 1491 return NO_ERROR; 1492 } 1493 1494 void AudioPolicyManager::releaseInput(audio_io_handle_t input, 1495 audio_session_t session) 1496 { 1497 ALOGV("releaseInput() %d", input); 1498 ssize_t index = mInputs.indexOfKey(input); 1499 if (index < 0) { 1500 ALOGW("releaseInput() releasing unknown input %d", input); 1501 return; 1502 } 1503 sp<AudioInputDescriptor> inputDesc = mInputs.valueAt(index); 1504 ALOG_ASSERT(inputDesc != 0); 1505 1506 index = inputDesc->mSessions.indexOf(session); 1507 if (index < 0) { 1508 ALOGW("releaseInput() unknown session %d on input %d", session, input); 1509 return; 1510 } 1511 inputDesc->mSessions.remove(session); 1512 if (inputDesc->mOpenRefCount == 0) { 1513 ALOGW("releaseInput() invalid open ref count %d", inputDesc->mOpenRefCount); 1514 return; 1515 } 1516 inputDesc->mOpenRefCount--; 1517 if (inputDesc->mOpenRefCount > 0) { 1518 ALOGV("releaseInput() exit > 0"); 1519 return; 1520 } 1521 1522 closeInput(input); 1523 mpClientInterface->onAudioPortListUpdate(); 1524 ALOGV("releaseInput() exit"); 1525 } 1526 1527 void AudioPolicyManager::closeAllInputs() { 1528 bool patchRemoved = false; 1529 1530 for(size_t input_index = 0; input_index < mInputs.size(); input_index++) { 1531 sp<AudioInputDescriptor> inputDesc = mInputs.valueAt(input_index); 1532 ssize_t patch_index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 1533 if (patch_index >= 0) { 1534 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(patch_index); 1535 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 1536 mAudioPatches.removeItemsAt(patch_index); 1537 patchRemoved = true; 1538 } 1539 mpClientInterface->closeInput(mInputs.keyAt(input_index)); 1540 } 1541 mInputs.clear(); 1542 nextAudioPortGeneration(); 1543 1544 if (patchRemoved) { 1545 mpClientInterface->onAudioPatchListUpdate(); 1546 } 1547 } 1548 1549 void AudioPolicyManager::initStreamVolume(audio_stream_type_t stream, 1550 int indexMin, 1551 int indexMax) 1552 { 1553 ALOGV("initStreamVolume() stream %d, min %d, max %d", stream , indexMin, indexMax); 1554 if (indexMin < 0 || indexMin >= indexMax) { 1555 ALOGW("initStreamVolume() invalid index limits for stream %d, min %d, max %d", stream , indexMin, indexMax); 1556 return; 1557 } 1558 mStreams[stream].mIndexMin = indexMin; 1559 mStreams[stream].mIndexMax = indexMax; 1560 } 1561 1562 status_t AudioPolicyManager::setStreamVolumeIndex(audio_stream_type_t stream, 1563 int index, 1564 audio_devices_t device) 1565 { 1566 1567 if ((index < mStreams[stream].mIndexMin) || (index > mStreams[stream].mIndexMax)) { 1568 return BAD_VALUE; 1569 } 1570 if (!audio_is_output_device(device)) { 1571 return BAD_VALUE; 1572 } 1573 1574 // Force max volume if stream cannot be muted 1575 if (!mStreams[stream].mCanBeMuted) index = mStreams[stream].mIndexMax; 1576 1577 ALOGV("setStreamVolumeIndex() stream %d, device %04x, index %d", 1578 stream, device, index); 1579 1580 // if device is AUDIO_DEVICE_OUT_DEFAULT set default value and 1581 // clear all device specific values 1582 if (device == AUDIO_DEVICE_OUT_DEFAULT) { 1583 mStreams[stream].mIndexCur.clear(); 1584 } 1585 mStreams[stream].mIndexCur.add(device, index); 1586 1587 // compute and apply stream volume on all outputs according to connected device 1588 status_t status = NO_ERROR; 1589 for (size_t i = 0; i < mOutputs.size(); i++) { 1590 audio_devices_t curDevice = 1591 getDeviceForVolume(mOutputs.valueAt(i)->device()); 1592 if ((device == AUDIO_DEVICE_OUT_DEFAULT) || (device == curDevice)) { 1593 status_t volStatus = checkAndSetVolume(stream, index, mOutputs.keyAt(i), curDevice); 1594 if (volStatus != NO_ERROR) { 1595 status = volStatus; 1596 } 1597 } 1598 } 1599 return status; 1600 } 1601 1602 status_t AudioPolicyManager::getStreamVolumeIndex(audio_stream_type_t stream, 1603 int *index, 1604 audio_devices_t device) 1605 { 1606 if (index == NULL) { 1607 return BAD_VALUE; 1608 } 1609 if (!audio_is_output_device(device)) { 1610 return BAD_VALUE; 1611 } 1612 // if device is AUDIO_DEVICE_OUT_DEFAULT, return volume for device corresponding to 1613 // the strategy the stream belongs to. 1614 if (device == AUDIO_DEVICE_OUT_DEFAULT) { 1615 device = getDeviceForStrategy(getStrategy(stream), true /*fromCache*/); 1616 } 1617 device = getDeviceForVolume(device); 1618 1619 *index = mStreams[stream].getVolumeIndex(device); 1620 ALOGV("getStreamVolumeIndex() stream %d device %08x index %d", stream, device, *index); 1621 return NO_ERROR; 1622 } 1623 1624 audio_io_handle_t AudioPolicyManager::selectOutputForEffects( 1625 const SortedVector<audio_io_handle_t>& outputs) 1626 { 1627 // select one output among several suitable for global effects. 1628 // The priority is as follows: 1629 // 1: An offloaded output. If the effect ends up not being offloadable, 1630 // AudioFlinger will invalidate the track and the offloaded output 1631 // will be closed causing the effect to be moved to a PCM output. 1632 // 2: A deep buffer output 1633 // 3: the first output in the list 1634 1635 if (outputs.size() == 0) { 1636 return 0; 1637 } 1638 1639 audio_io_handle_t outputOffloaded = 0; 1640 audio_io_handle_t outputDeepBuffer = 0; 1641 1642 for (size_t i = 0; i < outputs.size(); i++) { 1643 sp<AudioOutputDescriptor> desc = mOutputs.valueFor(outputs[i]); 1644 ALOGV("selectOutputForEffects outputs[%zu] flags %x", i, desc->mFlags); 1645 if ((desc->mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) { 1646 outputOffloaded = outputs[i]; 1647 } 1648 if ((desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) != 0) { 1649 outputDeepBuffer = outputs[i]; 1650 } 1651 } 1652 1653 ALOGV("selectOutputForEffects outputOffloaded %d outputDeepBuffer %d", 1654 outputOffloaded, outputDeepBuffer); 1655 if (outputOffloaded != 0) { 1656 return outputOffloaded; 1657 } 1658 if (outputDeepBuffer != 0) { 1659 return outputDeepBuffer; 1660 } 1661 1662 return outputs[0]; 1663 } 1664 1665 audio_io_handle_t AudioPolicyManager::getOutputForEffect(const effect_descriptor_t *desc) 1666 { 1667 // apply simple rule where global effects are attached to the same output as MUSIC streams 1668 1669 routing_strategy strategy = getStrategy(AUDIO_STREAM_MUSIC); 1670 audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/); 1671 SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(device, mOutputs); 1672 1673 audio_io_handle_t output = selectOutputForEffects(dstOutputs); 1674 ALOGV("getOutputForEffect() got output %d for fx %s flags %x", 1675 output, (desc == NULL) ? "unspecified" : desc->name, (desc == NULL) ? 0 : desc->flags); 1676 1677 return output; 1678 } 1679 1680 status_t AudioPolicyManager::registerEffect(const effect_descriptor_t *desc, 1681 audio_io_handle_t io, 1682 uint32_t strategy, 1683 int session, 1684 int id) 1685 { 1686 ssize_t index = mOutputs.indexOfKey(io); 1687 if (index < 0) { 1688 index = mInputs.indexOfKey(io); 1689 if (index < 0) { 1690 ALOGW("registerEffect() unknown io %d", io); 1691 return INVALID_OPERATION; 1692 } 1693 } 1694 1695 if (mTotalEffectsMemory + desc->memoryUsage > getMaxEffectsMemory()) { 1696 ALOGW("registerEffect() memory limit exceeded for Fx %s, Memory %d KB", 1697 desc->name, desc->memoryUsage); 1698 return INVALID_OPERATION; 1699 } 1700 mTotalEffectsMemory += desc->memoryUsage; 1701 ALOGV("registerEffect() effect %s, io %d, strategy %d session %d id %d", 1702 desc->name, io, strategy, session, id); 1703 ALOGV("registerEffect() memory %d, total memory %d", desc->memoryUsage, mTotalEffectsMemory); 1704 1705 sp<EffectDescriptor> effectDesc = new EffectDescriptor(); 1706 memcpy (&effectDesc->mDesc, desc, sizeof(effect_descriptor_t)); 1707 effectDesc->mIo = io; 1708 effectDesc->mStrategy = (routing_strategy)strategy; 1709 effectDesc->mSession = session; 1710 effectDesc->mEnabled = false; 1711 1712 mEffects.add(id, effectDesc); 1713 1714 return NO_ERROR; 1715 } 1716 1717 status_t AudioPolicyManager::unregisterEffect(int id) 1718 { 1719 ssize_t index = mEffects.indexOfKey(id); 1720 if (index < 0) { 1721 ALOGW("unregisterEffect() unknown effect ID %d", id); 1722 return INVALID_OPERATION; 1723 } 1724 1725 sp<EffectDescriptor> effectDesc = mEffects.valueAt(index); 1726 1727 setEffectEnabled(effectDesc, false); 1728 1729 if (mTotalEffectsMemory < effectDesc->mDesc.memoryUsage) { 1730 ALOGW("unregisterEffect() memory %d too big for total %d", 1731 effectDesc->mDesc.memoryUsage, mTotalEffectsMemory); 1732 effectDesc->mDesc.memoryUsage = mTotalEffectsMemory; 1733 } 1734 mTotalEffectsMemory -= effectDesc->mDesc.memoryUsage; 1735 ALOGV("unregisterEffect() effect %s, ID %d, memory %d total memory %d", 1736 effectDesc->mDesc.name, id, effectDesc->mDesc.memoryUsage, mTotalEffectsMemory); 1737 1738 mEffects.removeItem(id); 1739 1740 return NO_ERROR; 1741 } 1742 1743 status_t AudioPolicyManager::setEffectEnabled(int id, bool enabled) 1744 { 1745 ssize_t index = mEffects.indexOfKey(id); 1746 if (index < 0) { 1747 ALOGW("unregisterEffect() unknown effect ID %d", id); 1748 return INVALID_OPERATION; 1749 } 1750 1751 return setEffectEnabled(mEffects.valueAt(index), enabled); 1752 } 1753 1754 status_t AudioPolicyManager::setEffectEnabled(const sp<EffectDescriptor>& effectDesc, bool enabled) 1755 { 1756 if (enabled == effectDesc->mEnabled) { 1757 ALOGV("setEffectEnabled(%s) effect already %s", 1758 enabled?"true":"false", enabled?"enabled":"disabled"); 1759 return INVALID_OPERATION; 1760 } 1761 1762 if (enabled) { 1763 if (mTotalEffectsCpuLoad + effectDesc->mDesc.cpuLoad > getMaxEffectsCpuLoad()) { 1764 ALOGW("setEffectEnabled(true) CPU Load limit exceeded for Fx %s, CPU %f MIPS", 1765 effectDesc->mDesc.name, (float)effectDesc->mDesc.cpuLoad/10); 1766 return INVALID_OPERATION; 1767 } 1768 mTotalEffectsCpuLoad += effectDesc->mDesc.cpuLoad; 1769 ALOGV("setEffectEnabled(true) total CPU %d", mTotalEffectsCpuLoad); 1770 } else { 1771 if (mTotalEffectsCpuLoad < effectDesc->mDesc.cpuLoad) { 1772 ALOGW("setEffectEnabled(false) CPU load %d too high for total %d", 1773 effectDesc->mDesc.cpuLoad, mTotalEffectsCpuLoad); 1774 effectDesc->mDesc.cpuLoad = mTotalEffectsCpuLoad; 1775 } 1776 mTotalEffectsCpuLoad -= effectDesc->mDesc.cpuLoad; 1777 ALOGV("setEffectEnabled(false) total CPU %d", mTotalEffectsCpuLoad); 1778 } 1779 effectDesc->mEnabled = enabled; 1780 return NO_ERROR; 1781 } 1782 1783 bool AudioPolicyManager::isNonOffloadableEffectEnabled() 1784 { 1785 for (size_t i = 0; i < mEffects.size(); i++) { 1786 sp<EffectDescriptor> effectDesc = mEffects.valueAt(i); 1787 if (effectDesc->mEnabled && (effectDesc->mStrategy == STRATEGY_MEDIA) && 1788 ((effectDesc->mDesc.flags & EFFECT_FLAG_OFFLOAD_SUPPORTED) == 0)) { 1789 ALOGV("isNonOffloadableEffectEnabled() non offloadable effect %s enabled on session %d", 1790 effectDesc->mDesc.name, effectDesc->mSession); 1791 return true; 1792 } 1793 } 1794 return false; 1795 } 1796 1797 bool AudioPolicyManager::isStreamActive(audio_stream_type_t stream, uint32_t inPastMs) const 1798 { 1799 nsecs_t sysTime = systemTime(); 1800 for (size_t i = 0; i < mOutputs.size(); i++) { 1801 const sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(i); 1802 if (outputDesc->isStreamActive(stream, inPastMs, sysTime)) { 1803 return true; 1804 } 1805 } 1806 return false; 1807 } 1808 1809 bool AudioPolicyManager::isStreamActiveRemotely(audio_stream_type_t stream, 1810 uint32_t inPastMs) const 1811 { 1812 nsecs_t sysTime = systemTime(); 1813 for (size_t i = 0; i < mOutputs.size(); i++) { 1814 const sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(i); 1815 if (((outputDesc->device() & APM_AUDIO_OUT_DEVICE_REMOTE_ALL) != 0) && 1816 outputDesc->isStreamActive(stream, inPastMs, sysTime)) { 1817 return true; 1818 } 1819 } 1820 return false; 1821 } 1822 1823 bool AudioPolicyManager::isSourceActive(audio_source_t source) const 1824 { 1825 for (size_t i = 0; i < mInputs.size(); i++) { 1826 const sp<AudioInputDescriptor> inputDescriptor = mInputs.valueAt(i); 1827 if ((inputDescriptor->mInputSource == (int)source || 1828 (source == AUDIO_SOURCE_VOICE_RECOGNITION && 1829 inputDescriptor->mInputSource == AUDIO_SOURCE_HOTWORD)) 1830 && (inputDescriptor->mRefCount > 0)) { 1831 return true; 1832 } 1833 } 1834 return false; 1835 } 1836 1837 1838 status_t AudioPolicyManager::dump(int fd) 1839 { 1840 const size_t SIZE = 256; 1841 char buffer[SIZE]; 1842 String8 result; 1843 1844 snprintf(buffer, SIZE, "\nAudioPolicyManager Dump: %p\n", this); 1845 result.append(buffer); 1846 1847 snprintf(buffer, SIZE, " Primary Output: %d\n", mPrimaryOutput); 1848 result.append(buffer); 1849 snprintf(buffer, SIZE, " Phone state: %d\n", mPhoneState); 1850 result.append(buffer); 1851 snprintf(buffer, SIZE, " Force use for communications %d\n", 1852 mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]); 1853 result.append(buffer); 1854 snprintf(buffer, SIZE, " Force use for media %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA]); 1855 result.append(buffer); 1856 snprintf(buffer, SIZE, " Force use for record %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD]); 1857 result.append(buffer); 1858 snprintf(buffer, SIZE, " Force use for dock %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_DOCK]); 1859 result.append(buffer); 1860 snprintf(buffer, SIZE, " Force use for system %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM]); 1861 result.append(buffer); 1862 snprintf(buffer, SIZE, " Force use for hdmi system audio %d\n", 1863 mForceUse[AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO]); 1864 result.append(buffer); 1865 1866 snprintf(buffer, SIZE, " Available output devices:\n"); 1867 result.append(buffer); 1868 write(fd, result.string(), result.size()); 1869 for (size_t i = 0; i < mAvailableOutputDevices.size(); i++) { 1870 mAvailableOutputDevices[i]->dump(fd, 2, i); 1871 } 1872 snprintf(buffer, SIZE, "\n Available input devices:\n"); 1873 write(fd, buffer, strlen(buffer)); 1874 for (size_t i = 0; i < mAvailableInputDevices.size(); i++) { 1875 mAvailableInputDevices[i]->dump(fd, 2, i); 1876 } 1877 1878 snprintf(buffer, SIZE, "\nHW Modules dump:\n"); 1879 write(fd, buffer, strlen(buffer)); 1880 for (size_t i = 0; i < mHwModules.size(); i++) { 1881 snprintf(buffer, SIZE, "- HW Module %zu:\n", i + 1); 1882 write(fd, buffer, strlen(buffer)); 1883 mHwModules[i]->dump(fd); 1884 } 1885 1886 snprintf(buffer, SIZE, "\nOutputs dump:\n"); 1887 write(fd, buffer, strlen(buffer)); 1888 for (size_t i = 0; i < mOutputs.size(); i++) { 1889 snprintf(buffer, SIZE, "- Output %d dump:\n", mOutputs.keyAt(i)); 1890 write(fd, buffer, strlen(buffer)); 1891 mOutputs.valueAt(i)->dump(fd); 1892 } 1893 1894 snprintf(buffer, SIZE, "\nInputs dump:\n"); 1895 write(fd, buffer, strlen(buffer)); 1896 for (size_t i = 0; i < mInputs.size(); i++) { 1897 snprintf(buffer, SIZE, "- Input %d dump:\n", mInputs.keyAt(i)); 1898 write(fd, buffer, strlen(buffer)); 1899 mInputs.valueAt(i)->dump(fd); 1900 } 1901 1902 snprintf(buffer, SIZE, "\nStreams dump:\n"); 1903 write(fd, buffer, strlen(buffer)); 1904 snprintf(buffer, SIZE, 1905 " Stream Can be muted Index Min Index Max Index Cur [device : index]...\n"); 1906 write(fd, buffer, strlen(buffer)); 1907 for (size_t i = 0; i < AUDIO_STREAM_CNT; i++) { 1908 snprintf(buffer, SIZE, " %02zu ", i); 1909 write(fd, buffer, strlen(buffer)); 1910 mStreams[i].dump(fd); 1911 } 1912 1913 snprintf(buffer, SIZE, "\nTotal Effects CPU: %f MIPS, Total Effects memory: %d KB\n", 1914 (float)mTotalEffectsCpuLoad/10, mTotalEffectsMemory); 1915 write(fd, buffer, strlen(buffer)); 1916 1917 snprintf(buffer, SIZE, "Registered effects:\n"); 1918 write(fd, buffer, strlen(buffer)); 1919 for (size_t i = 0; i < mEffects.size(); i++) { 1920 snprintf(buffer, SIZE, "- Effect %d dump:\n", mEffects.keyAt(i)); 1921 write(fd, buffer, strlen(buffer)); 1922 mEffects.valueAt(i)->dump(fd); 1923 } 1924 1925 snprintf(buffer, SIZE, "\nAudio Patches:\n"); 1926 write(fd, buffer, strlen(buffer)); 1927 for (size_t i = 0; i < mAudioPatches.size(); i++) { 1928 mAudioPatches[i]->dump(fd, 2, i); 1929 } 1930 1931 return NO_ERROR; 1932 } 1933 1934 // This function checks for the parameters which can be offloaded. 1935 // This can be enhanced depending on the capability of the DSP and policy 1936 // of the system. 1937 bool AudioPolicyManager::isOffloadSupported(const audio_offload_info_t& offloadInfo) 1938 { 1939 ALOGV("isOffloadSupported: SR=%u, CM=0x%x, Format=0x%x, StreamType=%d," 1940 " BitRate=%u, duration=%" PRId64 " us, has_video=%d", 1941 offloadInfo.sample_rate, offloadInfo.channel_mask, 1942 offloadInfo.format, 1943 offloadInfo.stream_type, offloadInfo.bit_rate, offloadInfo.duration_us, 1944 offloadInfo.has_video); 1945 1946 // Check if offload has been disabled 1947 char propValue[PROPERTY_VALUE_MAX]; 1948 if (property_get("audio.offload.disable", propValue, "0")) { 1949 if (atoi(propValue) != 0) { 1950 ALOGV("offload disabled by audio.offload.disable=%s", propValue ); 1951 return false; 1952 } 1953 } 1954 1955 // Check if stream type is music, then only allow offload as of now. 1956 if (offloadInfo.stream_type != AUDIO_STREAM_MUSIC) 1957 { 1958 ALOGV("isOffloadSupported: stream_type != MUSIC, returning false"); 1959 return false; 1960 } 1961 1962 //TODO: enable audio offloading with video when ready 1963 if (offloadInfo.has_video) 1964 { 1965 ALOGV("isOffloadSupported: has_video == true, returning false"); 1966 return false; 1967 } 1968 1969 //If duration is less than minimum value defined in property, return false 1970 if (property_get("audio.offload.min.duration.secs", propValue, NULL)) { 1971 if (offloadInfo.duration_us < (atoi(propValue) * 1000000 )) { 1972 ALOGV("Offload denied by duration < audio.offload.min.duration.secs(=%s)", propValue); 1973 return false; 1974 } 1975 } else if (offloadInfo.duration_us < OFFLOAD_DEFAULT_MIN_DURATION_SECS * 1000000) { 1976 ALOGV("Offload denied by duration < default min(=%u)", OFFLOAD_DEFAULT_MIN_DURATION_SECS); 1977 return false; 1978 } 1979 1980 // Do not allow offloading if one non offloadable effect is enabled. This prevents from 1981 // creating an offloaded track and tearing it down immediately after start when audioflinger 1982 // detects there is an active non offloadable effect. 1983 // FIXME: We should check the audio session here but we do not have it in this context. 1984 // This may prevent offloading in rare situations where effects are left active by apps 1985 // in the background. 1986 if (isNonOffloadableEffectEnabled()) { 1987 return false; 1988 } 1989 1990 // See if there is a profile to support this. 1991 // AUDIO_DEVICE_NONE 1992 sp<IOProfile> profile = getProfileForDirectOutput(AUDIO_DEVICE_NONE /*ignore device */, 1993 offloadInfo.sample_rate, 1994 offloadInfo.format, 1995 offloadInfo.channel_mask, 1996 AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD); 1997 ALOGV("isOffloadSupported() profile %sfound", profile != 0 ? "" : "NOT "); 1998 return (profile != 0); 1999 } 2000 2001 status_t AudioPolicyManager::listAudioPorts(audio_port_role_t role, 2002 audio_port_type_t type, 2003 unsigned int *num_ports, 2004 struct audio_port *ports, 2005 unsigned int *generation) 2006 { 2007 if (num_ports == NULL || (*num_ports != 0 && ports == NULL) || 2008 generation == NULL) { 2009 return BAD_VALUE; 2010 } 2011 ALOGV("listAudioPorts() role %d type %d num_ports %d ports %p", role, type, *num_ports, ports); 2012 if (ports == NULL) { 2013 *num_ports = 0; 2014 } 2015 2016 size_t portsWritten = 0; 2017 size_t portsMax = *num_ports; 2018 *num_ports = 0; 2019 if (type == AUDIO_PORT_TYPE_NONE || type == AUDIO_PORT_TYPE_DEVICE) { 2020 if (role == AUDIO_PORT_ROLE_SINK || role == AUDIO_PORT_ROLE_NONE) { 2021 for (size_t i = 0; 2022 i < mAvailableOutputDevices.size() && portsWritten < portsMax; i++) { 2023 mAvailableOutputDevices[i]->toAudioPort(&ports[portsWritten++]); 2024 } 2025 *num_ports += mAvailableOutputDevices.size(); 2026 } 2027 if (role == AUDIO_PORT_ROLE_SOURCE || role == AUDIO_PORT_ROLE_NONE) { 2028 for (size_t i = 0; 2029 i < mAvailableInputDevices.size() && portsWritten < portsMax; i++) { 2030 mAvailableInputDevices[i]->toAudioPort(&ports[portsWritten++]); 2031 } 2032 *num_ports += mAvailableInputDevices.size(); 2033 } 2034 } 2035 if (type == AUDIO_PORT_TYPE_NONE || type == AUDIO_PORT_TYPE_MIX) { 2036 if (role == AUDIO_PORT_ROLE_SINK || role == AUDIO_PORT_ROLE_NONE) { 2037 for (size_t i = 0; i < mInputs.size() && portsWritten < portsMax; i++) { 2038 mInputs[i]->toAudioPort(&ports[portsWritten++]); 2039 } 2040 *num_ports += mInputs.size(); 2041 } 2042 if (role == AUDIO_PORT_ROLE_SOURCE || role == AUDIO_PORT_ROLE_NONE) { 2043 size_t numOutputs = 0; 2044 for (size_t i = 0; i < mOutputs.size(); i++) { 2045 if (!mOutputs[i]->isDuplicated()) { 2046 numOutputs++; 2047 if (portsWritten < portsMax) { 2048 mOutputs[i]->toAudioPort(&ports[portsWritten++]); 2049 } 2050 } 2051 } 2052 *num_ports += numOutputs; 2053 } 2054 } 2055 *generation = curAudioPortGeneration(); 2056 ALOGV("listAudioPorts() got %zu ports needed %d", portsWritten, *num_ports); 2057 return NO_ERROR; 2058 } 2059 2060 status_t AudioPolicyManager::getAudioPort(struct audio_port *port __unused) 2061 { 2062 return NO_ERROR; 2063 } 2064 2065 sp<AudioPolicyManager::AudioOutputDescriptor> AudioPolicyManager::getOutputFromId( 2066 audio_port_handle_t id) const 2067 { 2068 sp<AudioOutputDescriptor> outputDesc = NULL; 2069 for (size_t i = 0; i < mOutputs.size(); i++) { 2070 outputDesc = mOutputs.valueAt(i); 2071 if (outputDesc->mId == id) { 2072 break; 2073 } 2074 } 2075 return outputDesc; 2076 } 2077 2078 sp<AudioPolicyManager::AudioInputDescriptor> AudioPolicyManager::getInputFromId( 2079 audio_port_handle_t id) const 2080 { 2081 sp<AudioInputDescriptor> inputDesc = NULL; 2082 for (size_t i = 0; i < mInputs.size(); i++) { 2083 inputDesc = mInputs.valueAt(i); 2084 if (inputDesc->mId == id) { 2085 break; 2086 } 2087 } 2088 return inputDesc; 2089 } 2090 2091 sp <AudioPolicyManager::HwModule> AudioPolicyManager::getModuleForDevice( 2092 audio_devices_t device) const 2093 { 2094 sp <HwModule> module; 2095 2096 for (size_t i = 0; i < mHwModules.size(); i++) { 2097 if (mHwModules[i]->mHandle == 0) { 2098 continue; 2099 } 2100 if (audio_is_output_device(device)) { 2101 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 2102 { 2103 if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices.types() & device) { 2104 return mHwModules[i]; 2105 } 2106 } 2107 } else { 2108 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) { 2109 if (mHwModules[i]->mInputProfiles[j]->mSupportedDevices.types() & 2110 device & ~AUDIO_DEVICE_BIT_IN) { 2111 return mHwModules[i]; 2112 } 2113 } 2114 } 2115 } 2116 return module; 2117 } 2118 2119 sp <AudioPolicyManager::HwModule> AudioPolicyManager::getModuleFromName(const char *name) const 2120 { 2121 sp <HwModule> module; 2122 2123 for (size_t i = 0; i < mHwModules.size(); i++) 2124 { 2125 if (strcmp(mHwModules[i]->mName, name) == 0) { 2126 return mHwModules[i]; 2127 } 2128 } 2129 return module; 2130 } 2131 2132 audio_devices_t AudioPolicyManager::availablePrimaryOutputDevices() 2133 { 2134 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(mPrimaryOutput); 2135 audio_devices_t devices = outputDesc->mProfile->mSupportedDevices.types(); 2136 return devices & mAvailableOutputDevices.types(); 2137 } 2138 2139 audio_devices_t AudioPolicyManager::availablePrimaryInputDevices() 2140 { 2141 audio_module_handle_t primaryHandle = 2142 mOutputs.valueFor(mPrimaryOutput)->mProfile->mModule->mHandle; 2143 audio_devices_t devices = AUDIO_DEVICE_NONE; 2144 for (size_t i = 0; i < mAvailableInputDevices.size(); i++) { 2145 if (mAvailableInputDevices[i]->mModule->mHandle == primaryHandle) { 2146 devices |= mAvailableInputDevices[i]->mDeviceType; 2147 } 2148 } 2149 return devices; 2150 } 2151 2152 status_t AudioPolicyManager::createAudioPatch(const struct audio_patch *patch, 2153 audio_patch_handle_t *handle, 2154 uid_t uid) 2155 { 2156 ALOGV("createAudioPatch()"); 2157 2158 if (handle == NULL || patch == NULL) { 2159 return BAD_VALUE; 2160 } 2161 ALOGV("createAudioPatch() num sources %d num sinks %d", patch->num_sources, patch->num_sinks); 2162 2163 if (patch->num_sources == 0 || patch->num_sources > AUDIO_PATCH_PORTS_MAX || 2164 patch->num_sinks == 0 || patch->num_sinks > AUDIO_PATCH_PORTS_MAX) { 2165 return BAD_VALUE; 2166 } 2167 // only one source per audio patch supported for now 2168 if (patch->num_sources > 1) { 2169 return INVALID_OPERATION; 2170 } 2171 2172 if (patch->sources[0].role != AUDIO_PORT_ROLE_SOURCE) { 2173 return INVALID_OPERATION; 2174 } 2175 for (size_t i = 0; i < patch->num_sinks; i++) { 2176 if (patch->sinks[i].role != AUDIO_PORT_ROLE_SINK) { 2177 return INVALID_OPERATION; 2178 } 2179 } 2180 2181 sp<AudioPatch> patchDesc; 2182 ssize_t index = mAudioPatches.indexOfKey(*handle); 2183 2184 ALOGV("createAudioPatch source id %d role %d type %d", patch->sources[0].id, 2185 patch->sources[0].role, 2186 patch->sources[0].type); 2187 #if LOG_NDEBUG == 0 2188 for (size_t i = 0; i < patch->num_sinks; i++) { 2189 ALOGV("createAudioPatch sink %d: id %d role %d type %d", i, patch->sinks[i].id, 2190 patch->sinks[i].role, 2191 patch->sinks[i].type); 2192 } 2193 #endif 2194 2195 if (index >= 0) { 2196 patchDesc = mAudioPatches.valueAt(index); 2197 ALOGV("createAudioPatch() mUidCached %d patchDesc->mUid %d uid %d", 2198 mUidCached, patchDesc->mUid, uid); 2199 if (patchDesc->mUid != mUidCached && uid != patchDesc->mUid) { 2200 return INVALID_OPERATION; 2201 } 2202 } else { 2203 *handle = 0; 2204 } 2205 2206 if (patch->sources[0].type == AUDIO_PORT_TYPE_MIX) { 2207 sp<AudioOutputDescriptor> outputDesc = getOutputFromId(patch->sources[0].id); 2208 if (outputDesc == NULL) { 2209 ALOGV("createAudioPatch() output not found for id %d", patch->sources[0].id); 2210 return BAD_VALUE; 2211 } 2212 ALOG_ASSERT(!outputDesc->isDuplicated(),"duplicated output %d in source in ports", 2213 outputDesc->mIoHandle); 2214 if (patchDesc != 0) { 2215 if (patchDesc->mPatch.sources[0].id != patch->sources[0].id) { 2216 ALOGV("createAudioPatch() source id differs for patch current id %d new id %d", 2217 patchDesc->mPatch.sources[0].id, patch->sources[0].id); 2218 return BAD_VALUE; 2219 } 2220 } 2221 DeviceVector devices; 2222 for (size_t i = 0; i < patch->num_sinks; i++) { 2223 // Only support mix to devices connection 2224 // TODO add support for mix to mix connection 2225 if (patch->sinks[i].type != AUDIO_PORT_TYPE_DEVICE) { 2226 ALOGV("createAudioPatch() source mix but sink is not a device"); 2227 return INVALID_OPERATION; 2228 } 2229 sp<DeviceDescriptor> devDesc = 2230 mAvailableOutputDevices.getDeviceFromId(patch->sinks[i].id); 2231 if (devDesc == 0) { 2232 ALOGV("createAudioPatch() out device not found for id %d", patch->sinks[i].id); 2233 return BAD_VALUE; 2234 } 2235 2236 if (!outputDesc->mProfile->isCompatibleProfile(devDesc->mDeviceType, 2237 patch->sources[0].sample_rate, 2238 NULL, // updatedSamplingRate 2239 patch->sources[0].format, 2240 patch->sources[0].channel_mask, 2241 AUDIO_OUTPUT_FLAG_NONE /*FIXME*/)) { 2242 ALOGV("createAudioPatch() profile not supported for device %08x", 2243 devDesc->mDeviceType); 2244 return INVALID_OPERATION; 2245 } 2246 devices.add(devDesc); 2247 } 2248 if (devices.size() == 0) { 2249 return INVALID_OPERATION; 2250 } 2251 2252 // TODO: reconfigure output format and channels here 2253 ALOGV("createAudioPatch() setting device %08x on output %d", 2254 devices.types(), outputDesc->mIoHandle); 2255 setOutputDevice(outputDesc->mIoHandle, devices.types(), true, 0, handle); 2256 index = mAudioPatches.indexOfKey(*handle); 2257 if (index >= 0) { 2258 if (patchDesc != 0 && patchDesc != mAudioPatches.valueAt(index)) { 2259 ALOGW("createAudioPatch() setOutputDevice() did not reuse the patch provided"); 2260 } 2261 patchDesc = mAudioPatches.valueAt(index); 2262 patchDesc->mUid = uid; 2263 ALOGV("createAudioPatch() success"); 2264 } else { 2265 ALOGW("createAudioPatch() setOutputDevice() failed to create a patch"); 2266 return INVALID_OPERATION; 2267 } 2268 } else if (patch->sources[0].type == AUDIO_PORT_TYPE_DEVICE) { 2269 if (patch->sinks[0].type == AUDIO_PORT_TYPE_MIX) { 2270 // input device to input mix connection 2271 // only one sink supported when connecting an input device to a mix 2272 if (patch->num_sinks > 1) { 2273 return INVALID_OPERATION; 2274 } 2275 sp<AudioInputDescriptor> inputDesc = getInputFromId(patch->sinks[0].id); 2276 if (inputDesc == NULL) { 2277 return BAD_VALUE; 2278 } 2279 if (patchDesc != 0) { 2280 if (patchDesc->mPatch.sinks[0].id != patch->sinks[0].id) { 2281 return BAD_VALUE; 2282 } 2283 } 2284 sp<DeviceDescriptor> devDesc = 2285 mAvailableInputDevices.getDeviceFromId(patch->sources[0].id); 2286 if (devDesc == 0) { 2287 return BAD_VALUE; 2288 } 2289 2290 if (!inputDesc->mProfile->isCompatibleProfile(devDesc->mDeviceType, 2291 patch->sinks[0].sample_rate, 2292 NULL, /*updatedSampleRate*/ 2293 patch->sinks[0].format, 2294 patch->sinks[0].channel_mask, 2295 // FIXME for the parameter type, 2296 // and the NONE 2297 (audio_output_flags_t) 2298 AUDIO_INPUT_FLAG_NONE)) { 2299 return INVALID_OPERATION; 2300 } 2301 // TODO: reconfigure output format and channels here 2302 ALOGV("createAudioPatch() setting device %08x on output %d", 2303 devDesc->mDeviceType, inputDesc->mIoHandle); 2304 setInputDevice(inputDesc->mIoHandle, devDesc->mDeviceType, true, handle); 2305 index = mAudioPatches.indexOfKey(*handle); 2306 if (index >= 0) { 2307 if (patchDesc != 0 && patchDesc != mAudioPatches.valueAt(index)) { 2308 ALOGW("createAudioPatch() setInputDevice() did not reuse the patch provided"); 2309 } 2310 patchDesc = mAudioPatches.valueAt(index); 2311 patchDesc->mUid = uid; 2312 ALOGV("createAudioPatch() success"); 2313 } else { 2314 ALOGW("createAudioPatch() setInputDevice() failed to create a patch"); 2315 return INVALID_OPERATION; 2316 } 2317 } else if (patch->sinks[0].type == AUDIO_PORT_TYPE_DEVICE) { 2318 // device to device connection 2319 if (patchDesc != 0) { 2320 if (patchDesc->mPatch.sources[0].id != patch->sources[0].id) { 2321 return BAD_VALUE; 2322 } 2323 } 2324 sp<DeviceDescriptor> srcDeviceDesc = 2325 mAvailableInputDevices.getDeviceFromId(patch->sources[0].id); 2326 if (srcDeviceDesc == 0) { 2327 return BAD_VALUE; 2328 } 2329 2330 //update source and sink with our own data as the data passed in the patch may 2331 // be incomplete. 2332 struct audio_patch newPatch = *patch; 2333 srcDeviceDesc->toAudioPortConfig(&newPatch.sources[0], &patch->sources[0]); 2334 2335 for (size_t i = 0; i < patch->num_sinks; i++) { 2336 if (patch->sinks[i].type != AUDIO_PORT_TYPE_DEVICE) { 2337 ALOGV("createAudioPatch() source device but one sink is not a device"); 2338 return INVALID_OPERATION; 2339 } 2340 2341 sp<DeviceDescriptor> sinkDeviceDesc = 2342 mAvailableOutputDevices.getDeviceFromId(patch->sinks[i].id); 2343 if (sinkDeviceDesc == 0) { 2344 return BAD_VALUE; 2345 } 2346 sinkDeviceDesc->toAudioPortConfig(&newPatch.sinks[i], &patch->sinks[i]); 2347 2348 if (srcDeviceDesc->mModule != sinkDeviceDesc->mModule) { 2349 // only one sink supported when connected devices across HW modules 2350 if (patch->num_sinks > 1) { 2351 return INVALID_OPERATION; 2352 } 2353 SortedVector<audio_io_handle_t> outputs = 2354 getOutputsForDevice(sinkDeviceDesc->mDeviceType, 2355 mOutputs); 2356 // if the sink device is reachable via an opened output stream, request to go via 2357 // this output stream by adding a second source to the patch description 2358 audio_io_handle_t output = selectOutput(outputs, 2359 AUDIO_OUTPUT_FLAG_NONE, 2360 AUDIO_FORMAT_INVALID); 2361 if (output != AUDIO_IO_HANDLE_NONE) { 2362 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 2363 if (outputDesc->isDuplicated()) { 2364 return INVALID_OPERATION; 2365 } 2366 outputDesc->toAudioPortConfig(&newPatch.sources[1], &patch->sources[0]); 2367 newPatch.num_sources = 2; 2368 } 2369 } 2370 } 2371 // TODO: check from routing capabilities in config file and other conflicting patches 2372 2373 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 2374 if (index >= 0) { 2375 afPatchHandle = patchDesc->mAfPatchHandle; 2376 } 2377 2378 status_t status = mpClientInterface->createAudioPatch(&newPatch, 2379 &afPatchHandle, 2380 0); 2381 ALOGV("createAudioPatch() patch panel returned %d patchHandle %d", 2382 status, afPatchHandle); 2383 if (status == NO_ERROR) { 2384 if (index < 0) { 2385 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 2386 &newPatch, uid); 2387 addAudioPatch(patchDesc->mHandle, patchDesc); 2388 } else { 2389 patchDesc->mPatch = newPatch; 2390 } 2391 patchDesc->mAfPatchHandle = afPatchHandle; 2392 *handle = patchDesc->mHandle; 2393 nextAudioPortGeneration(); 2394 mpClientInterface->onAudioPatchListUpdate(); 2395 } else { 2396 ALOGW("createAudioPatch() patch panel could not connect device patch, error %d", 2397 status); 2398 return INVALID_OPERATION; 2399 } 2400 } else { 2401 return BAD_VALUE; 2402 } 2403 } else { 2404 return BAD_VALUE; 2405 } 2406 return NO_ERROR; 2407 } 2408 2409 status_t AudioPolicyManager::releaseAudioPatch(audio_patch_handle_t handle, 2410 uid_t uid) 2411 { 2412 ALOGV("releaseAudioPatch() patch %d", handle); 2413 2414 ssize_t index = mAudioPatches.indexOfKey(handle); 2415 2416 if (index < 0) { 2417 return BAD_VALUE; 2418 } 2419 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 2420 ALOGV("releaseAudioPatch() mUidCached %d patchDesc->mUid %d uid %d", 2421 mUidCached, patchDesc->mUid, uid); 2422 if (patchDesc->mUid != mUidCached && uid != patchDesc->mUid) { 2423 return INVALID_OPERATION; 2424 } 2425 2426 struct audio_patch *patch = &patchDesc->mPatch; 2427 patchDesc->mUid = mUidCached; 2428 if (patch->sources[0].type == AUDIO_PORT_TYPE_MIX) { 2429 sp<AudioOutputDescriptor> outputDesc = getOutputFromId(patch->sources[0].id); 2430 if (outputDesc == NULL) { 2431 ALOGV("releaseAudioPatch() output not found for id %d", patch->sources[0].id); 2432 return BAD_VALUE; 2433 } 2434 2435 setOutputDevice(outputDesc->mIoHandle, 2436 getNewOutputDevice(outputDesc->mIoHandle, true /*fromCache*/), 2437 true, 2438 0, 2439 NULL); 2440 } else if (patch->sources[0].type == AUDIO_PORT_TYPE_DEVICE) { 2441 if (patch->sinks[0].type == AUDIO_PORT_TYPE_MIX) { 2442 sp<AudioInputDescriptor> inputDesc = getInputFromId(patch->sinks[0].id); 2443 if (inputDesc == NULL) { 2444 ALOGV("releaseAudioPatch() input not found for id %d", patch->sinks[0].id); 2445 return BAD_VALUE; 2446 } 2447 setInputDevice(inputDesc->mIoHandle, 2448 getNewInputDevice(inputDesc->mIoHandle), 2449 true, 2450 NULL); 2451 } else if (patch->sinks[0].type == AUDIO_PORT_TYPE_DEVICE) { 2452 audio_patch_handle_t afPatchHandle = patchDesc->mAfPatchHandle; 2453 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 2454 ALOGV("releaseAudioPatch() patch panel returned %d patchHandle %d", 2455 status, patchDesc->mAfPatchHandle); 2456 removeAudioPatch(patchDesc->mHandle); 2457 nextAudioPortGeneration(); 2458 mpClientInterface->onAudioPatchListUpdate(); 2459 } else { 2460 return BAD_VALUE; 2461 } 2462 } else { 2463 return BAD_VALUE; 2464 } 2465 return NO_ERROR; 2466 } 2467 2468 status_t AudioPolicyManager::listAudioPatches(unsigned int *num_patches, 2469 struct audio_patch *patches, 2470 unsigned int *generation) 2471 { 2472 if (num_patches == NULL || (*num_patches != 0 && patches == NULL) || 2473 generation == NULL) { 2474 return BAD_VALUE; 2475 } 2476 ALOGV("listAudioPatches() num_patches %d patches %p available patches %zu", 2477 *num_patches, patches, mAudioPatches.size()); 2478 if (patches == NULL) { 2479 *num_patches = 0; 2480 } 2481 2482 size_t patchesWritten = 0; 2483 size_t patchesMax = *num_patches; 2484 for (size_t i = 0; 2485 i < mAudioPatches.size() && patchesWritten < patchesMax; i++) { 2486 patches[patchesWritten] = mAudioPatches[i]->mPatch; 2487 patches[patchesWritten++].id = mAudioPatches[i]->mHandle; 2488 ALOGV("listAudioPatches() patch %zu num_sources %d num_sinks %d", 2489 i, mAudioPatches[i]->mPatch.num_sources, mAudioPatches[i]->mPatch.num_sinks); 2490 } 2491 *num_patches = mAudioPatches.size(); 2492 2493 *generation = curAudioPortGeneration(); 2494 ALOGV("listAudioPatches() got %zu patches needed %d", patchesWritten, *num_patches); 2495 return NO_ERROR; 2496 } 2497 2498 status_t AudioPolicyManager::setAudioPortConfig(const struct audio_port_config *config) 2499 { 2500 ALOGV("setAudioPortConfig()"); 2501 2502 if (config == NULL) { 2503 return BAD_VALUE; 2504 } 2505 ALOGV("setAudioPortConfig() on port handle %d", config->id); 2506 // Only support gain configuration for now 2507 if (config->config_mask != AUDIO_PORT_CONFIG_GAIN) { 2508 return INVALID_OPERATION; 2509 } 2510 2511 sp<AudioPortConfig> audioPortConfig; 2512 if (config->type == AUDIO_PORT_TYPE_MIX) { 2513 if (config->role == AUDIO_PORT_ROLE_SOURCE) { 2514 sp<AudioOutputDescriptor> outputDesc = getOutputFromId(config->id); 2515 if (outputDesc == NULL) { 2516 return BAD_VALUE; 2517 } 2518 ALOG_ASSERT(!outputDesc->isDuplicated(), 2519 "setAudioPortConfig() called on duplicated output %d", 2520 outputDesc->mIoHandle); 2521 audioPortConfig = outputDesc; 2522 } else if (config->role == AUDIO_PORT_ROLE_SINK) { 2523 sp<AudioInputDescriptor> inputDesc = getInputFromId(config->id); 2524 if (inputDesc == NULL) { 2525 return BAD_VALUE; 2526 } 2527 audioPortConfig = inputDesc; 2528 } else { 2529 return BAD_VALUE; 2530 } 2531 } else if (config->type == AUDIO_PORT_TYPE_DEVICE) { 2532 sp<DeviceDescriptor> deviceDesc; 2533 if (config->role == AUDIO_PORT_ROLE_SOURCE) { 2534 deviceDesc = mAvailableInputDevices.getDeviceFromId(config->id); 2535 } else if (config->role == AUDIO_PORT_ROLE_SINK) { 2536 deviceDesc = mAvailableOutputDevices.getDeviceFromId(config->id); 2537 } else { 2538 return BAD_VALUE; 2539 } 2540 if (deviceDesc == NULL) { 2541 return BAD_VALUE; 2542 } 2543 audioPortConfig = deviceDesc; 2544 } else { 2545 return BAD_VALUE; 2546 } 2547 2548 struct audio_port_config backupConfig; 2549 status_t status = audioPortConfig->applyAudioPortConfig(config, &backupConfig); 2550 if (status == NO_ERROR) { 2551 struct audio_port_config newConfig; 2552 audioPortConfig->toAudioPortConfig(&newConfig, config); 2553 status = mpClientInterface->setAudioPortConfig(&newConfig, 0); 2554 } 2555 if (status != NO_ERROR) { 2556 audioPortConfig->applyAudioPortConfig(&backupConfig); 2557 } 2558 2559 return status; 2560 } 2561 2562 void AudioPolicyManager::clearAudioPatches(uid_t uid) 2563 { 2564 for (ssize_t i = 0; i < (ssize_t)mAudioPatches.size(); i++) { 2565 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(i); 2566 if (patchDesc->mUid == uid) { 2567 // releaseAudioPatch() removes the patch from mAudioPatches 2568 if (releaseAudioPatch(mAudioPatches.keyAt(i), uid) == NO_ERROR) { 2569 i--; 2570 } 2571 } 2572 } 2573 } 2574 2575 status_t AudioPolicyManager::acquireSoundTriggerSession(audio_session_t *session, 2576 audio_io_handle_t *ioHandle, 2577 audio_devices_t *device) 2578 { 2579 *session = (audio_session_t)mpClientInterface->newAudioUniqueId(); 2580 *ioHandle = (audio_io_handle_t)mpClientInterface->newAudioUniqueId(); 2581 *device = getDeviceForInputSource(AUDIO_SOURCE_HOTWORD); 2582 2583 mSoundTriggerSessions.add(*session, *ioHandle); 2584 2585 return NO_ERROR; 2586 } 2587 2588 status_t AudioPolicyManager::releaseSoundTriggerSession(audio_session_t session) 2589 { 2590 ssize_t index = mSoundTriggerSessions.indexOfKey(session); 2591 if (index < 0) { 2592 ALOGW("acquireSoundTriggerSession() session %d not registered", session); 2593 return BAD_VALUE; 2594 } 2595 2596 mSoundTriggerSessions.removeItem(session); 2597 return NO_ERROR; 2598 } 2599 2600 status_t AudioPolicyManager::addAudioPatch(audio_patch_handle_t handle, 2601 const sp<AudioPatch>& patch) 2602 { 2603 ssize_t index = mAudioPatches.indexOfKey(handle); 2604 2605 if (index >= 0) { 2606 ALOGW("addAudioPatch() patch %d already in", handle); 2607 return ALREADY_EXISTS; 2608 } 2609 mAudioPatches.add(handle, patch); 2610 ALOGV("addAudioPatch() handle %d af handle %d num_sources %d num_sinks %d source handle %d" 2611 "sink handle %d", 2612 handle, patch->mAfPatchHandle, patch->mPatch.num_sources, patch->mPatch.num_sinks, 2613 patch->mPatch.sources[0].id, patch->mPatch.sinks[0].id); 2614 return NO_ERROR; 2615 } 2616 2617 status_t AudioPolicyManager::removeAudioPatch(audio_patch_handle_t handle) 2618 { 2619 ssize_t index = mAudioPatches.indexOfKey(handle); 2620 2621 if (index < 0) { 2622 ALOGW("removeAudioPatch() patch %d not in", handle); 2623 return ALREADY_EXISTS; 2624 } 2625 ALOGV("removeAudioPatch() handle %d af handle %d", handle, 2626 mAudioPatches.valueAt(index)->mAfPatchHandle); 2627 mAudioPatches.removeItemsAt(index); 2628 return NO_ERROR; 2629 } 2630 2631 // ---------------------------------------------------------------------------- 2632 // AudioPolicyManager 2633 // ---------------------------------------------------------------------------- 2634 2635 uint32_t AudioPolicyManager::nextUniqueId() 2636 { 2637 return android_atomic_inc(&mNextUniqueId); 2638 } 2639 2640 uint32_t AudioPolicyManager::nextAudioPortGeneration() 2641 { 2642 return android_atomic_inc(&mAudioPortGeneration); 2643 } 2644 2645 AudioPolicyManager::AudioPolicyManager(AudioPolicyClientInterface *clientInterface) 2646 : 2647 #ifdef AUDIO_POLICY_TEST 2648 Thread(false), 2649 #endif //AUDIO_POLICY_TEST 2650 mPrimaryOutput((audio_io_handle_t)0), 2651 mPhoneState(AUDIO_MODE_NORMAL), 2652 mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f), 2653 mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0), 2654 mA2dpSuspended(false), 2655 mSpeakerDrcEnabled(false), mNextUniqueId(1), 2656 mAudioPortGeneration(1) 2657 { 2658 mUidCached = getuid(); 2659 mpClientInterface = clientInterface; 2660 2661 for (int i = 0; i < AUDIO_POLICY_FORCE_USE_CNT; i++) { 2662 mForceUse[i] = AUDIO_POLICY_FORCE_NONE; 2663 } 2664 2665 mDefaultOutputDevice = new DeviceDescriptor(String8(""), AUDIO_DEVICE_OUT_SPEAKER); 2666 if (loadAudioPolicyConfig(AUDIO_POLICY_VENDOR_CONFIG_FILE) != NO_ERROR) { 2667 if (loadAudioPolicyConfig(AUDIO_POLICY_CONFIG_FILE) != NO_ERROR) { 2668 ALOGE("could not load audio policy configuration file, setting defaults"); 2669 defaultAudioPolicyConfig(); 2670 } 2671 } 2672 // mAvailableOutputDevices and mAvailableInputDevices now contain all attached devices 2673 2674 // must be done after reading the policy 2675 initializeVolumeCurves(); 2676 2677 // open all output streams needed to access attached devices 2678 audio_devices_t outputDeviceTypes = mAvailableOutputDevices.types(); 2679 audio_devices_t inputDeviceTypes = mAvailableInputDevices.types() & ~AUDIO_DEVICE_BIT_IN; 2680 for (size_t i = 0; i < mHwModules.size(); i++) { 2681 mHwModules[i]->mHandle = mpClientInterface->loadHwModule(mHwModules[i]->mName); 2682 if (mHwModules[i]->mHandle == 0) { 2683 ALOGW("could not open HW module %s", mHwModules[i]->mName); 2684 continue; 2685 } 2686 // open all output streams needed to access attached devices 2687 // except for direct output streams that are only opened when they are actually 2688 // required by an app. 2689 // This also validates mAvailableOutputDevices list 2690 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 2691 { 2692 const sp<IOProfile> outProfile = mHwModules[i]->mOutputProfiles[j]; 2693 2694 if (outProfile->mSupportedDevices.isEmpty()) { 2695 ALOGW("Output profile contains no device on module %s", mHwModules[i]->mName); 2696 continue; 2697 } 2698 2699 if ((outProfile->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) != 0) { 2700 continue; 2701 } 2702 audio_devices_t profileType = outProfile->mSupportedDevices.types(); 2703 if ((profileType & mDefaultOutputDevice->mDeviceType) != AUDIO_DEVICE_NONE) { 2704 profileType = mDefaultOutputDevice->mDeviceType; 2705 } else { 2706 // chose first device present in mSupportedDevices also part of 2707 // outputDeviceTypes 2708 for (size_t k = 0; k < outProfile->mSupportedDevices.size(); k++) { 2709 profileType = outProfile->mSupportedDevices[k]->mDeviceType; 2710 if ((profileType & outputDeviceTypes) != 0) { 2711 break; 2712 } 2713 } 2714 } 2715 if ((profileType & outputDeviceTypes) == 0) { 2716 continue; 2717 } 2718 sp<AudioOutputDescriptor> outputDesc = new AudioOutputDescriptor(outProfile); 2719 2720 outputDesc->mDevice = profileType; 2721 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 2722 config.sample_rate = outputDesc->mSamplingRate; 2723 config.channel_mask = outputDesc->mChannelMask; 2724 config.format = outputDesc->mFormat; 2725 audio_io_handle_t output = AUDIO_IO_HANDLE_NONE; 2726 status_t status = mpClientInterface->openOutput(outProfile->mModule->mHandle, 2727 &output, 2728 &config, 2729 &outputDesc->mDevice, 2730 String8(""), 2731 &outputDesc->mLatency, 2732 outputDesc->mFlags); 2733 2734 if (status != NO_ERROR) { 2735 ALOGW("Cannot open output stream for device %08x on hw module %s", 2736 outputDesc->mDevice, 2737 mHwModules[i]->mName); 2738 } else { 2739 outputDesc->mSamplingRate = config.sample_rate; 2740 outputDesc->mChannelMask = config.channel_mask; 2741 outputDesc->mFormat = config.format; 2742 2743 for (size_t k = 0; k < outProfile->mSupportedDevices.size(); k++) { 2744 audio_devices_t type = outProfile->mSupportedDevices[k]->mDeviceType; 2745 ssize_t index = 2746 mAvailableOutputDevices.indexOf(outProfile->mSupportedDevices[k]); 2747 // give a valid ID to an attached device once confirmed it is reachable 2748 if ((index >= 0) && (mAvailableOutputDevices[index]->mId == 0)) { 2749 mAvailableOutputDevices[index]->mId = nextUniqueId(); 2750 mAvailableOutputDevices[index]->mModule = mHwModules[i]; 2751 } 2752 } 2753 if (mPrimaryOutput == 0 && 2754 outProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) { 2755 mPrimaryOutput = output; 2756 } 2757 addOutput(output, outputDesc); 2758 setOutputDevice(output, 2759 outputDesc->mDevice, 2760 true); 2761 } 2762 } 2763 // open input streams needed to access attached devices to validate 2764 // mAvailableInputDevices list 2765 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) 2766 { 2767 const sp<IOProfile> inProfile = mHwModules[i]->mInputProfiles[j]; 2768 2769 if (inProfile->mSupportedDevices.isEmpty()) { 2770 ALOGW("Input profile contains no device on module %s", mHwModules[i]->mName); 2771 continue; 2772 } 2773 // chose first device present in mSupportedDevices also part of 2774 // inputDeviceTypes 2775 audio_devices_t profileType = AUDIO_DEVICE_NONE; 2776 for (size_t k = 0; k < inProfile->mSupportedDevices.size(); k++) { 2777 profileType = inProfile->mSupportedDevices[k]->mDeviceType; 2778 if (profileType & inputDeviceTypes) { 2779 break; 2780 } 2781 } 2782 if ((profileType & inputDeviceTypes) == 0) { 2783 continue; 2784 } 2785 sp<AudioInputDescriptor> inputDesc = new AudioInputDescriptor(inProfile); 2786 2787 inputDesc->mInputSource = AUDIO_SOURCE_MIC; 2788 inputDesc->mDevice = profileType; 2789 2790 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 2791 config.sample_rate = inputDesc->mSamplingRate; 2792 config.channel_mask = inputDesc->mChannelMask; 2793 config.format = inputDesc->mFormat; 2794 audio_io_handle_t input = AUDIO_IO_HANDLE_NONE; 2795 status_t status = mpClientInterface->openInput(inProfile->mModule->mHandle, 2796 &input, 2797 &config, 2798 &inputDesc->mDevice, 2799 String8(""), 2800 AUDIO_SOURCE_MIC, 2801 AUDIO_INPUT_FLAG_NONE); 2802 2803 if (status == NO_ERROR) { 2804 for (size_t k = 0; k < inProfile->mSupportedDevices.size(); k++) { 2805 audio_devices_t type = inProfile->mSupportedDevices[k]->mDeviceType; 2806 ssize_t index = 2807 mAvailableInputDevices.indexOf(inProfile->mSupportedDevices[k]); 2808 // give a valid ID to an attached device once confirmed it is reachable 2809 if ((index >= 0) && (mAvailableInputDevices[index]->mId == 0)) { 2810 mAvailableInputDevices[index]->mId = nextUniqueId(); 2811 mAvailableInputDevices[index]->mModule = mHwModules[i]; 2812 } 2813 } 2814 mpClientInterface->closeInput(input); 2815 } else { 2816 ALOGW("Cannot open input stream for device %08x on hw module %s", 2817 inputDesc->mDevice, 2818 mHwModules[i]->mName); 2819 } 2820 } 2821 } 2822 // make sure all attached devices have been allocated a unique ID 2823 for (size_t i = 0; i < mAvailableOutputDevices.size();) { 2824 if (mAvailableOutputDevices[i]->mId == 0) { 2825 ALOGW("Input device %08x unreachable", mAvailableOutputDevices[i]->mDeviceType); 2826 mAvailableOutputDevices.remove(mAvailableOutputDevices[i]); 2827 continue; 2828 } 2829 i++; 2830 } 2831 for (size_t i = 0; i < mAvailableInputDevices.size();) { 2832 if (mAvailableInputDevices[i]->mId == 0) { 2833 ALOGW("Input device %08x unreachable", mAvailableInputDevices[i]->mDeviceType); 2834 mAvailableInputDevices.remove(mAvailableInputDevices[i]); 2835 continue; 2836 } 2837 i++; 2838 } 2839 // make sure default device is reachable 2840 if (mAvailableOutputDevices.indexOf(mDefaultOutputDevice) < 0) { 2841 ALOGE("Default device %08x is unreachable", mDefaultOutputDevice->mDeviceType); 2842 } 2843 2844 ALOGE_IF((mPrimaryOutput == 0), "Failed to open primary output"); 2845 2846 updateDevicesAndOutputs(); 2847 2848 #ifdef AUDIO_POLICY_TEST 2849 if (mPrimaryOutput != 0) { 2850 AudioParameter outputCmd = AudioParameter(); 2851 outputCmd.addInt(String8("set_id"), 0); 2852 mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString()); 2853 2854 mTestDevice = AUDIO_DEVICE_OUT_SPEAKER; 2855 mTestSamplingRate = 44100; 2856 mTestFormat = AUDIO_FORMAT_PCM_16_BIT; 2857 mTestChannels = AUDIO_CHANNEL_OUT_STEREO; 2858 mTestLatencyMs = 0; 2859 mCurOutput = 0; 2860 mDirectOutput = false; 2861 for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { 2862 mTestOutputs[i] = 0; 2863 } 2864 2865 const size_t SIZE = 256; 2866 char buffer[SIZE]; 2867 snprintf(buffer, SIZE, "AudioPolicyManagerTest"); 2868 run(buffer, ANDROID_PRIORITY_AUDIO); 2869 } 2870 #endif //AUDIO_POLICY_TEST 2871 } 2872 2873 AudioPolicyManager::~AudioPolicyManager() 2874 { 2875 #ifdef AUDIO_POLICY_TEST 2876 exit(); 2877 #endif //AUDIO_POLICY_TEST 2878 for (size_t i = 0; i < mOutputs.size(); i++) { 2879 mpClientInterface->closeOutput(mOutputs.keyAt(i)); 2880 } 2881 for (size_t i = 0; i < mInputs.size(); i++) { 2882 mpClientInterface->closeInput(mInputs.keyAt(i)); 2883 } 2884 mAvailableOutputDevices.clear(); 2885 mAvailableInputDevices.clear(); 2886 mOutputs.clear(); 2887 mInputs.clear(); 2888 mHwModules.clear(); 2889 } 2890 2891 status_t AudioPolicyManager::initCheck() 2892 { 2893 return (mPrimaryOutput == 0) ? NO_INIT : NO_ERROR; 2894 } 2895 2896 #ifdef AUDIO_POLICY_TEST 2897 bool AudioPolicyManager::threadLoop() 2898 { 2899 ALOGV("entering threadLoop()"); 2900 while (!exitPending()) 2901 { 2902 String8 command; 2903 int valueInt; 2904 String8 value; 2905 2906 Mutex::Autolock _l(mLock); 2907 mWaitWorkCV.waitRelative(mLock, milliseconds(50)); 2908 2909 command = mpClientInterface->getParameters(0, String8("test_cmd_policy")); 2910 AudioParameter param = AudioParameter(command); 2911 2912 if (param.getInt(String8("test_cmd_policy"), valueInt) == NO_ERROR && 2913 valueInt != 0) { 2914 ALOGV("Test command %s received", command.string()); 2915 String8 target; 2916 if (param.get(String8("target"), target) != NO_ERROR) { 2917 target = "Manager"; 2918 } 2919 if (param.getInt(String8("test_cmd_policy_output"), valueInt) == NO_ERROR) { 2920 param.remove(String8("test_cmd_policy_output")); 2921 mCurOutput = valueInt; 2922 } 2923 if (param.get(String8("test_cmd_policy_direct"), value) == NO_ERROR) { 2924 param.remove(String8("test_cmd_policy_direct")); 2925 if (value == "false") { 2926 mDirectOutput = false; 2927 } else if (value == "true") { 2928 mDirectOutput = true; 2929 } 2930 } 2931 if (param.getInt(String8("test_cmd_policy_input"), valueInt) == NO_ERROR) { 2932 param.remove(String8("test_cmd_policy_input")); 2933 mTestInput = valueInt; 2934 } 2935 2936 if (param.get(String8("test_cmd_policy_format"), value) == NO_ERROR) { 2937 param.remove(String8("test_cmd_policy_format")); 2938 int format = AUDIO_FORMAT_INVALID; 2939 if (value == "PCM 16 bits") { 2940 format = AUDIO_FORMAT_PCM_16_BIT; 2941 } else if (value == "PCM 8 bits") { 2942 format = AUDIO_FORMAT_PCM_8_BIT; 2943 } else if (value == "Compressed MP3") { 2944 format = AUDIO_FORMAT_MP3; 2945 } 2946 if (format != AUDIO_FORMAT_INVALID) { 2947 if (target == "Manager") { 2948 mTestFormat = format; 2949 } else if (mTestOutputs[mCurOutput] != 0) { 2950 AudioParameter outputParam = AudioParameter(); 2951 outputParam.addInt(String8("format"), format); 2952 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2953 } 2954 } 2955 } 2956 if (param.get(String8("test_cmd_policy_channels"), value) == NO_ERROR) { 2957 param.remove(String8("test_cmd_policy_channels")); 2958 int channels = 0; 2959 2960 if (value == "Channels Stereo") { 2961 channels = AUDIO_CHANNEL_OUT_STEREO; 2962 } else if (value == "Channels Mono") { 2963 channels = AUDIO_CHANNEL_OUT_MONO; 2964 } 2965 if (channels != 0) { 2966 if (target == "Manager") { 2967 mTestChannels = channels; 2968 } else if (mTestOutputs[mCurOutput] != 0) { 2969 AudioParameter outputParam = AudioParameter(); 2970 outputParam.addInt(String8("channels"), channels); 2971 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2972 } 2973 } 2974 } 2975 if (param.getInt(String8("test_cmd_policy_sampleRate"), valueInt) == NO_ERROR) { 2976 param.remove(String8("test_cmd_policy_sampleRate")); 2977 if (valueInt >= 0 && valueInt <= 96000) { 2978 int samplingRate = valueInt; 2979 if (target == "Manager") { 2980 mTestSamplingRate = samplingRate; 2981 } else if (mTestOutputs[mCurOutput] != 0) { 2982 AudioParameter outputParam = AudioParameter(); 2983 outputParam.addInt(String8("sampling_rate"), samplingRate); 2984 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2985 } 2986 } 2987 } 2988 2989 if (param.get(String8("test_cmd_policy_reopen"), value) == NO_ERROR) { 2990 param.remove(String8("test_cmd_policy_reopen")); 2991 2992 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(mPrimaryOutput); 2993 mpClientInterface->closeOutput(mPrimaryOutput); 2994 2995 audio_module_handle_t moduleHandle = outputDesc->mModule->mHandle; 2996 2997 mOutputs.removeItem(mPrimaryOutput); 2998 2999 sp<AudioOutputDescriptor> outputDesc = new AudioOutputDescriptor(NULL); 3000 outputDesc->mDevice = AUDIO_DEVICE_OUT_SPEAKER; 3001 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 3002 config.sample_rate = outputDesc->mSamplingRate; 3003 config.channel_mask = outputDesc->mChannelMask; 3004 config.format = outputDesc->mFormat; 3005 status_t status = mpClientInterface->openOutput(moduleHandle, 3006 &mPrimaryOutput, 3007 &config, 3008 &outputDesc->mDevice, 3009 String8(""), 3010 &outputDesc->mLatency, 3011 outputDesc->mFlags); 3012 if (status != NO_ERROR) { 3013 ALOGE("Failed to reopen hardware output stream, " 3014 "samplingRate: %d, format %d, channels %d", 3015 outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannelMask); 3016 } else { 3017 outputDesc->mSamplingRate = config.sample_rate; 3018 outputDesc->mChannelMask = config.channel_mask; 3019 outputDesc->mFormat = config.format; 3020 AudioParameter outputCmd = AudioParameter(); 3021 outputCmd.addInt(String8("set_id"), 0); 3022 mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString()); 3023 addOutput(mPrimaryOutput, outputDesc); 3024 } 3025 } 3026 3027 3028 mpClientInterface->setParameters(0, String8("test_cmd_policy=")); 3029 } 3030 } 3031 return false; 3032 } 3033 3034 void AudioPolicyManager::exit() 3035 { 3036 { 3037 AutoMutex _l(mLock); 3038 requestExit(); 3039 mWaitWorkCV.signal(); 3040 } 3041 requestExitAndWait(); 3042 } 3043 3044 int AudioPolicyManager::testOutputIndex(audio_io_handle_t output) 3045 { 3046 for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { 3047 if (output == mTestOutputs[i]) return i; 3048 } 3049 return 0; 3050 } 3051 #endif //AUDIO_POLICY_TEST 3052 3053 // --- 3054 3055 void AudioPolicyManager::addOutput(audio_io_handle_t output, sp<AudioOutputDescriptor> outputDesc) 3056 { 3057 outputDesc->mIoHandle = output; 3058 outputDesc->mId = nextUniqueId(); 3059 mOutputs.add(output, outputDesc); 3060 nextAudioPortGeneration(); 3061 } 3062 3063 void AudioPolicyManager::addInput(audio_io_handle_t input, sp<AudioInputDescriptor> inputDesc) 3064 { 3065 inputDesc->mIoHandle = input; 3066 inputDesc->mId = nextUniqueId(); 3067 mInputs.add(input, inputDesc); 3068 nextAudioPortGeneration(); 3069 } 3070 3071 void AudioPolicyManager::findIoHandlesByAddress(sp<AudioOutputDescriptor> desc /*in*/, 3072 const String8 address /*in*/, 3073 SortedVector<audio_io_handle_t>& outputs /*out*/) { 3074 // look for a match on the given address on the addresses of the outputs: 3075 // find the address by finding the patch that maps to this output 3076 ssize_t patchIdx = mAudioPatches.indexOfKey(desc->mPatchHandle); 3077 //ALOGV(" inspecting output %d (patch %d) for supported device=0x%x", 3078 // outputIdx, patchIdx, desc->mProfile->mSupportedDevices.types()); 3079 if (patchIdx >= 0) { 3080 const sp<AudioPatch> patchDesc = mAudioPatches.valueAt(patchIdx); 3081 const int numSinks = patchDesc->mPatch.num_sinks; 3082 for (ssize_t j=0; j < numSinks; j++) { 3083 if (patchDesc->mPatch.sinks[j].type == AUDIO_PORT_TYPE_DEVICE) { 3084 const char* patchAddr = 3085 patchDesc->mPatch.sinks[j].ext.device.address; 3086 if (strncmp(patchAddr, 3087 address.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN) == 0) { 3088 ALOGV("findIoHandlesByAddress(): adding opened output %d on same address %s", 3089 desc->mIoHandle, patchDesc->mPatch.sinks[j].ext.device.address); 3090 outputs.add(desc->mIoHandle); 3091 break; 3092 } 3093 } 3094 } 3095 } 3096 } 3097 3098 status_t AudioPolicyManager::checkOutputsForDevice(const sp<DeviceDescriptor> devDesc, 3099 audio_policy_dev_state_t state, 3100 SortedVector<audio_io_handle_t>& outputs, 3101 const String8 address) 3102 { 3103 audio_devices_t device = devDesc->mDeviceType; 3104 sp<AudioOutputDescriptor> desc; 3105 // erase all current sample rates, formats and channel masks 3106 devDesc->clearCapabilities(); 3107 3108 if (state == AUDIO_POLICY_DEVICE_STATE_AVAILABLE) { 3109 // first list already open outputs that can be routed to this device 3110 for (size_t i = 0; i < mOutputs.size(); i++) { 3111 desc = mOutputs.valueAt(i); 3112 if (!desc->isDuplicated() && (desc->mProfile->mSupportedDevices.types() & device)) { 3113 if (!deviceDistinguishesOnAddress(device)) { 3114 ALOGV("checkOutputsForDevice(): adding opened output %d", mOutputs.keyAt(i)); 3115 outputs.add(mOutputs.keyAt(i)); 3116 } else { 3117 ALOGV(" checking address match due to device 0x%x", device); 3118 findIoHandlesByAddress(desc, address, outputs); 3119 } 3120 } 3121 } 3122 // then look for output profiles that can be routed to this device 3123 SortedVector< sp<IOProfile> > profiles; 3124 for (size_t i = 0; i < mHwModules.size(); i++) 3125 { 3126 if (mHwModules[i]->mHandle == 0) { 3127 continue; 3128 } 3129 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 3130 { 3131 if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices.types() & device) { 3132 ALOGV("checkOutputsForDevice(): adding profile %zu from module %zu", j, i); 3133 profiles.add(mHwModules[i]->mOutputProfiles[j]); 3134 } 3135 } 3136 } 3137 3138 ALOGV(" found %d profiles, %d outputs", profiles.size(), outputs.size()); 3139 3140 if (profiles.isEmpty() && outputs.isEmpty()) { 3141 ALOGW("checkOutputsForDevice(): No output available for device %04x", device); 3142 return BAD_VALUE; 3143 } 3144 3145 // open outputs for matching profiles if needed. Direct outputs are also opened to 3146 // query for dynamic parameters and will be closed later by setDeviceConnectionState() 3147 for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) { 3148 sp<IOProfile> profile = profiles[profile_index]; 3149 3150 // nothing to do if one output is already opened for this profile 3151 size_t j; 3152 for (j = 0; j < outputs.size(); j++) { 3153 desc = mOutputs.valueFor(outputs.itemAt(j)); 3154 if (!desc->isDuplicated() && desc->mProfile == profile) { 3155 // matching profile: save the sample rates, format and channel masks supported 3156 // by the profile in our device descriptor 3157 devDesc->importAudioPort(profile); 3158 break; 3159 } 3160 } 3161 if (j != outputs.size()) { 3162 continue; 3163 } 3164 3165 ALOGV("opening output for device %08x with params %s profile %p", 3166 device, address.string(), profile.get()); 3167 desc = new AudioOutputDescriptor(profile); 3168 desc->mDevice = device; 3169 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 3170 config.sample_rate = desc->mSamplingRate; 3171 config.channel_mask = desc->mChannelMask; 3172 config.format = desc->mFormat; 3173 config.offload_info.sample_rate = desc->mSamplingRate; 3174 config.offload_info.channel_mask = desc->mChannelMask; 3175 config.offload_info.format = desc->mFormat; 3176 audio_io_handle_t output = AUDIO_IO_HANDLE_NONE; 3177 status_t status = mpClientInterface->openOutput(profile->mModule->mHandle, 3178 &output, 3179 &config, 3180 &desc->mDevice, 3181 address, 3182 &desc->mLatency, 3183 desc->mFlags); 3184 if (status == NO_ERROR) { 3185 desc->mSamplingRate = config.sample_rate; 3186 desc->mChannelMask = config.channel_mask; 3187 desc->mFormat = config.format; 3188 3189 // Here is where the out_set_parameters() for card & device gets called 3190 if (!address.isEmpty()) { 3191 char *param = audio_device_address_to_parameter(device, address); 3192 mpClientInterface->setParameters(output, String8(param)); 3193 free(param); 3194 } 3195 3196 // Here is where we step through and resolve any "dynamic" fields 3197 String8 reply; 3198 char *value; 3199 if (profile->mSamplingRates[0] == 0) { 3200 reply = mpClientInterface->getParameters(output, 3201 String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES)); 3202 ALOGV("checkOutputsForDevice() supported sampling rates %s", 3203 reply.string()); 3204 value = strpbrk((char *)reply.string(), "="); 3205 if (value != NULL) { 3206 profile->loadSamplingRates(value + 1); 3207 } 3208 } 3209 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 3210 reply = mpClientInterface->getParameters(output, 3211 String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS)); 3212 ALOGV("checkOutputsForDevice() supported formats %s", 3213 reply.string()); 3214 value = strpbrk((char *)reply.string(), "="); 3215 if (value != NULL) { 3216 profile->loadFormats(value + 1); 3217 } 3218 } 3219 if (profile->mChannelMasks[0] == 0) { 3220 reply = mpClientInterface->getParameters(output, 3221 String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS)); 3222 ALOGV("checkOutputsForDevice() supported channel masks %s", 3223 reply.string()); 3224 value = strpbrk((char *)reply.string(), "="); 3225 if (value != NULL) { 3226 profile->loadOutChannels(value + 1); 3227 } 3228 } 3229 if (((profile->mSamplingRates[0] == 0) && 3230 (profile->mSamplingRates.size() < 2)) || 3231 ((profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) && 3232 (profile->mFormats.size() < 2)) || 3233 ((profile->mChannelMasks[0] == 0) && 3234 (profile->mChannelMasks.size() < 2))) { 3235 ALOGW("checkOutputsForDevice() missing param"); 3236 mpClientInterface->closeOutput(output); 3237 output = AUDIO_IO_HANDLE_NONE; 3238 } else if (profile->mSamplingRates[0] == 0 || profile->mFormats[0] == 0 || 3239 profile->mChannelMasks[0] == 0) { 3240 mpClientInterface->closeOutput(output); 3241 config.sample_rate = profile->pickSamplingRate(); 3242 config.channel_mask = profile->pickChannelMask(); 3243 config.format = profile->pickFormat(); 3244 config.offload_info.sample_rate = config.sample_rate; 3245 config.offload_info.channel_mask = config.channel_mask; 3246 config.offload_info.format = config.format; 3247 status = mpClientInterface->openOutput(profile->mModule->mHandle, 3248 &output, 3249 &config, 3250 &desc->mDevice, 3251 address, 3252 &desc->mLatency, 3253 desc->mFlags); 3254 if (status == NO_ERROR) { 3255 desc->mSamplingRate = config.sample_rate; 3256 desc->mChannelMask = config.channel_mask; 3257 desc->mFormat = config.format; 3258 } else { 3259 output = AUDIO_IO_HANDLE_NONE; 3260 } 3261 } 3262 3263 if (output != AUDIO_IO_HANDLE_NONE) { 3264 addOutput(output, desc); 3265 if ((desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) == 0) { 3266 audio_io_handle_t duplicatedOutput = AUDIO_IO_HANDLE_NONE; 3267 3268 // set initial stream volume for device 3269 applyStreamVolumes(output, device, 0, true); 3270 3271 //TODO: configure audio effect output stage here 3272 3273 // open a duplicating output thread for the new output and the primary output 3274 duplicatedOutput = mpClientInterface->openDuplicateOutput(output, 3275 mPrimaryOutput); 3276 if (duplicatedOutput != AUDIO_IO_HANDLE_NONE) { 3277 // add duplicated output descriptor 3278 sp<AudioOutputDescriptor> dupOutputDesc = 3279 new AudioOutputDescriptor(NULL); 3280 dupOutputDesc->mOutput1 = mOutputs.valueFor(mPrimaryOutput); 3281 dupOutputDesc->mOutput2 = mOutputs.valueFor(output); 3282 dupOutputDesc->mSamplingRate = desc->mSamplingRate; 3283 dupOutputDesc->mFormat = desc->mFormat; 3284 dupOutputDesc->mChannelMask = desc->mChannelMask; 3285 dupOutputDesc->mLatency = desc->mLatency; 3286 addOutput(duplicatedOutput, dupOutputDesc); 3287 applyStreamVolumes(duplicatedOutput, device, 0, true); 3288 } else { 3289 ALOGW("checkOutputsForDevice() could not open dup output for %d and %d", 3290 mPrimaryOutput, output); 3291 mpClientInterface->closeOutput(output); 3292 mOutputs.removeItem(output); 3293 nextAudioPortGeneration(); 3294 output = AUDIO_IO_HANDLE_NONE; 3295 } 3296 } 3297 } 3298 } else { 3299 output = AUDIO_IO_HANDLE_NONE; 3300 } 3301 if (output == AUDIO_IO_HANDLE_NONE) { 3302 ALOGW("checkOutputsForDevice() could not open output for device %x", device); 3303 profiles.removeAt(profile_index); 3304 profile_index--; 3305 } else { 3306 outputs.add(output); 3307 devDesc->importAudioPort(profile); 3308 3309 if (deviceDistinguishesOnAddress(device)) { 3310 ALOGV("checkOutputsForDevice(): setOutputDevice(dev=0x%x, addr=%s)", 3311 device, address.string()); 3312 setOutputDevice(output, device, true/*force*/, 0/*delay*/, 3313 NULL/*patch handle*/, address.string()); 3314 } 3315 ALOGV("checkOutputsForDevice(): adding output %d", output); 3316 } 3317 } 3318 3319 if (profiles.isEmpty()) { 3320 ALOGW("checkOutputsForDevice(): No output available for device %04x", device); 3321 return BAD_VALUE; 3322 } 3323 } else { // Disconnect 3324 // check if one opened output is not needed any more after disconnecting one device 3325 for (size_t i = 0; i < mOutputs.size(); i++) { 3326 desc = mOutputs.valueAt(i); 3327 if (!desc->isDuplicated()) { 3328 if (!(desc->mProfile->mSupportedDevices.types() 3329 & mAvailableOutputDevices.types())) { 3330 ALOGV("checkOutputsForDevice(): disconnecting adding output %d", 3331 mOutputs.keyAt(i)); 3332 outputs.add(mOutputs.keyAt(i)); 3333 } else if (deviceDistinguishesOnAddress(device) && 3334 // exact match on device 3335 (desc->mProfile->mSupportedDevices.types() == device)) { 3336 findIoHandlesByAddress(desc, address, outputs); 3337 } 3338 } 3339 } 3340 // Clear any profiles associated with the disconnected device. 3341 for (size_t i = 0; i < mHwModules.size(); i++) 3342 { 3343 if (mHwModules[i]->mHandle == 0) { 3344 continue; 3345 } 3346 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 3347 { 3348 sp<IOProfile> profile = mHwModules[i]->mOutputProfiles[j]; 3349 if (profile->mSupportedDevices.types() & device) { 3350 ALOGV("checkOutputsForDevice(): " 3351 "clearing direct output profile %zu on module %zu", j, i); 3352 if (profile->mSamplingRates[0] == 0) { 3353 profile->mSamplingRates.clear(); 3354 profile->mSamplingRates.add(0); 3355 } 3356 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 3357 profile->mFormats.clear(); 3358 profile->mFormats.add(AUDIO_FORMAT_DEFAULT); 3359 } 3360 if (profile->mChannelMasks[0] == 0) { 3361 profile->mChannelMasks.clear(); 3362 profile->mChannelMasks.add(0); 3363 } 3364 } 3365 } 3366 } 3367 } 3368 return NO_ERROR; 3369 } 3370 3371 status_t AudioPolicyManager::checkInputsForDevice(audio_devices_t device, 3372 audio_policy_dev_state_t state, 3373 SortedVector<audio_io_handle_t>& inputs, 3374 const String8 address) 3375 { 3376 sp<AudioInputDescriptor> desc; 3377 if (state == AUDIO_POLICY_DEVICE_STATE_AVAILABLE) { 3378 // first list already open inputs that can be routed to this device 3379 for (size_t input_index = 0; input_index < mInputs.size(); input_index++) { 3380 desc = mInputs.valueAt(input_index); 3381 if (desc->mProfile->mSupportedDevices.types() & (device & ~AUDIO_DEVICE_BIT_IN)) { 3382 ALOGV("checkInputsForDevice(): adding opened input %d", mInputs.keyAt(input_index)); 3383 inputs.add(mInputs.keyAt(input_index)); 3384 } 3385 } 3386 3387 // then look for input profiles that can be routed to this device 3388 SortedVector< sp<IOProfile> > profiles; 3389 for (size_t module_idx = 0; module_idx < mHwModules.size(); module_idx++) 3390 { 3391 if (mHwModules[module_idx]->mHandle == 0) { 3392 continue; 3393 } 3394 for (size_t profile_index = 0; 3395 profile_index < mHwModules[module_idx]->mInputProfiles.size(); 3396 profile_index++) 3397 { 3398 if (mHwModules[module_idx]->mInputProfiles[profile_index]->mSupportedDevices.types() 3399 & (device & ~AUDIO_DEVICE_BIT_IN)) { 3400 ALOGV("checkInputsForDevice(): adding profile %zu from module %zu", 3401 profile_index, module_idx); 3402 profiles.add(mHwModules[module_idx]->mInputProfiles[profile_index]); 3403 } 3404 } 3405 } 3406 3407 if (profiles.isEmpty() && inputs.isEmpty()) { 3408 ALOGW("checkInputsForDevice(): No input available for device 0x%X", device); 3409 return BAD_VALUE; 3410 } 3411 3412 // open inputs for matching profiles if needed. Direct inputs are also opened to 3413 // query for dynamic parameters and will be closed later by setDeviceConnectionState() 3414 for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) { 3415 3416 sp<IOProfile> profile = profiles[profile_index]; 3417 // nothing to do if one input is already opened for this profile 3418 size_t input_index; 3419 for (input_index = 0; input_index < mInputs.size(); input_index++) { 3420 desc = mInputs.valueAt(input_index); 3421 if (desc->mProfile == profile) { 3422 break; 3423 } 3424 } 3425 if (input_index != mInputs.size()) { 3426 continue; 3427 } 3428 3429 ALOGV("opening input for device 0x%X with params %s", device, address.string()); 3430 desc = new AudioInputDescriptor(profile); 3431 desc->mDevice = device; 3432 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 3433 config.sample_rate = desc->mSamplingRate; 3434 config.channel_mask = desc->mChannelMask; 3435 config.format = desc->mFormat; 3436 audio_io_handle_t input = AUDIO_IO_HANDLE_NONE; 3437 status_t status = mpClientInterface->openInput(profile->mModule->mHandle, 3438 &input, 3439 &config, 3440 &desc->mDevice, 3441 address, 3442 AUDIO_SOURCE_MIC, 3443 AUDIO_INPUT_FLAG_NONE /*FIXME*/); 3444 3445 if (status == NO_ERROR) { 3446 desc->mSamplingRate = config.sample_rate; 3447 desc->mChannelMask = config.channel_mask; 3448 desc->mFormat = config.format; 3449 3450 if (!address.isEmpty()) { 3451 char *param = audio_device_address_to_parameter(device, address); 3452 mpClientInterface->setParameters(input, String8(param)); 3453 free(param); 3454 } 3455 3456 // Here is where we step through and resolve any "dynamic" fields 3457 String8 reply; 3458 char *value; 3459 if (profile->mSamplingRates[0] == 0) { 3460 reply = mpClientInterface->getParameters(input, 3461 String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES)); 3462 ALOGV("checkInputsForDevice() direct input sup sampling rates %s", 3463 reply.string()); 3464 value = strpbrk((char *)reply.string(), "="); 3465 if (value != NULL) { 3466 profile->loadSamplingRates(value + 1); 3467 } 3468 } 3469 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 3470 reply = mpClientInterface->getParameters(input, 3471 String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS)); 3472 ALOGV("checkInputsForDevice() direct input sup formats %s", reply.string()); 3473 value = strpbrk((char *)reply.string(), "="); 3474 if (value != NULL) { 3475 profile->loadFormats(value + 1); 3476 } 3477 } 3478 if (profile->mChannelMasks[0] == 0) { 3479 reply = mpClientInterface->getParameters(input, 3480 String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS)); 3481 ALOGV("checkInputsForDevice() direct input sup channel masks %s", 3482 reply.string()); 3483 value = strpbrk((char *)reply.string(), "="); 3484 if (value != NULL) { 3485 profile->loadInChannels(value + 1); 3486 } 3487 } 3488 if (((profile->mSamplingRates[0] == 0) && (profile->mSamplingRates.size() < 2)) || 3489 ((profile->mFormats[0] == 0) && (profile->mFormats.size() < 2)) || 3490 ((profile->mChannelMasks[0] == 0) && (profile->mChannelMasks.size() < 2))) { 3491 ALOGW("checkInputsForDevice() direct input missing param"); 3492 mpClientInterface->closeInput(input); 3493 input = AUDIO_IO_HANDLE_NONE; 3494 } 3495 3496 if (input != 0) { 3497 addInput(input, desc); 3498 } 3499 } // endif input != 0 3500 3501 if (input == AUDIO_IO_HANDLE_NONE) { 3502 ALOGW("checkInputsForDevice() could not open input for device 0x%X", device); 3503 profiles.removeAt(profile_index); 3504 profile_index--; 3505 } else { 3506 inputs.add(input); 3507 ALOGV("checkInputsForDevice(): adding input %d", input); 3508 } 3509 } // end scan profiles 3510 3511 if (profiles.isEmpty()) { 3512 ALOGW("checkInputsForDevice(): No input available for device 0x%X", device); 3513 return BAD_VALUE; 3514 } 3515 } else { 3516 // Disconnect 3517 // check if one opened input is not needed any more after disconnecting one device 3518 for (size_t input_index = 0; input_index < mInputs.size(); input_index++) { 3519 desc = mInputs.valueAt(input_index); 3520 if (!(desc->mProfile->mSupportedDevices.types() & mAvailableInputDevices.types())) { 3521 ALOGV("checkInputsForDevice(): disconnecting adding input %d", 3522 mInputs.keyAt(input_index)); 3523 inputs.add(mInputs.keyAt(input_index)); 3524 } 3525 } 3526 // Clear any profiles associated with the disconnected device. 3527 for (size_t module_index = 0; module_index < mHwModules.size(); module_index++) { 3528 if (mHwModules[module_index]->mHandle == 0) { 3529 continue; 3530 } 3531 for (size_t profile_index = 0; 3532 profile_index < mHwModules[module_index]->mInputProfiles.size(); 3533 profile_index++) { 3534 sp<IOProfile> profile = mHwModules[module_index]->mInputProfiles[profile_index]; 3535 if (profile->mSupportedDevices.types() & device) { 3536 ALOGV("checkInputsForDevice(): clearing direct input profile %zu on module %zu", 3537 profile_index, module_index); 3538 if (profile->mSamplingRates[0] == 0) { 3539 profile->mSamplingRates.clear(); 3540 profile->mSamplingRates.add(0); 3541 } 3542 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 3543 profile->mFormats.clear(); 3544 profile->mFormats.add(AUDIO_FORMAT_DEFAULT); 3545 } 3546 if (profile->mChannelMasks[0] == 0) { 3547 profile->mChannelMasks.clear(); 3548 profile->mChannelMasks.add(0); 3549 } 3550 } 3551 } 3552 } 3553 } // end disconnect 3554 3555 return NO_ERROR; 3556 } 3557 3558 3559 void AudioPolicyManager::closeOutput(audio_io_handle_t output) 3560 { 3561 ALOGV("closeOutput(%d)", output); 3562 3563 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3564 if (outputDesc == NULL) { 3565 ALOGW("closeOutput() unknown output %d", output); 3566 return; 3567 } 3568 3569 // look for duplicated outputs connected to the output being removed. 3570 for (size_t i = 0; i < mOutputs.size(); i++) { 3571 sp<AudioOutputDescriptor> dupOutputDesc = mOutputs.valueAt(i); 3572 if (dupOutputDesc->isDuplicated() && 3573 (dupOutputDesc->mOutput1 == outputDesc || 3574 dupOutputDesc->mOutput2 == outputDesc)) { 3575 sp<AudioOutputDescriptor> outputDesc2; 3576 if (dupOutputDesc->mOutput1 == outputDesc) { 3577 outputDesc2 = dupOutputDesc->mOutput2; 3578 } else { 3579 outputDesc2 = dupOutputDesc->mOutput1; 3580 } 3581 // As all active tracks on duplicated output will be deleted, 3582 // and as they were also referenced on the other output, the reference 3583 // count for their stream type must be adjusted accordingly on 3584 // the other output. 3585 for (int j = 0; j < AUDIO_STREAM_CNT; j++) { 3586 int refCount = dupOutputDesc->mRefCount[j]; 3587 outputDesc2->changeRefCount((audio_stream_type_t)j,-refCount); 3588 } 3589 audio_io_handle_t duplicatedOutput = mOutputs.keyAt(i); 3590 ALOGV("closeOutput() closing also duplicated output %d", duplicatedOutput); 3591 3592 mpClientInterface->closeOutput(duplicatedOutput); 3593 mOutputs.removeItem(duplicatedOutput); 3594 } 3595 } 3596 3597 nextAudioPortGeneration(); 3598 3599 ssize_t index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 3600 if (index >= 0) { 3601 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3602 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 3603 mAudioPatches.removeItemsAt(index); 3604 mpClientInterface->onAudioPatchListUpdate(); 3605 } 3606 3607 AudioParameter param; 3608 param.add(String8("closing"), String8("true")); 3609 mpClientInterface->setParameters(output, param.toString()); 3610 3611 mpClientInterface->closeOutput(output); 3612 mOutputs.removeItem(output); 3613 mPreviousOutputs = mOutputs; 3614 } 3615 3616 void AudioPolicyManager::closeInput(audio_io_handle_t input) 3617 { 3618 ALOGV("closeInput(%d)", input); 3619 3620 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 3621 if (inputDesc == NULL) { 3622 ALOGW("closeInput() unknown input %d", input); 3623 return; 3624 } 3625 3626 nextAudioPortGeneration(); 3627 3628 ssize_t index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 3629 if (index >= 0) { 3630 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3631 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 3632 mAudioPatches.removeItemsAt(index); 3633 mpClientInterface->onAudioPatchListUpdate(); 3634 } 3635 3636 mpClientInterface->closeInput(input); 3637 mInputs.removeItem(input); 3638 } 3639 3640 SortedVector<audio_io_handle_t> AudioPolicyManager::getOutputsForDevice(audio_devices_t device, 3641 DefaultKeyedVector<audio_io_handle_t, sp<AudioOutputDescriptor> > openOutputs) 3642 { 3643 SortedVector<audio_io_handle_t> outputs; 3644 3645 ALOGVV("getOutputsForDevice() device %04x", device); 3646 for (size_t i = 0; i < openOutputs.size(); i++) { 3647 ALOGVV("output %d isDuplicated=%d device=%04x", 3648 i, openOutputs.valueAt(i)->isDuplicated(), openOutputs.valueAt(i)->supportedDevices()); 3649 if ((device & openOutputs.valueAt(i)->supportedDevices()) == device) { 3650 ALOGVV("getOutputsForDevice() found output %d", openOutputs.keyAt(i)); 3651 outputs.add(openOutputs.keyAt(i)); 3652 } 3653 } 3654 return outputs; 3655 } 3656 3657 bool AudioPolicyManager::vectorsEqual(SortedVector<audio_io_handle_t>& outputs1, 3658 SortedVector<audio_io_handle_t>& outputs2) 3659 { 3660 if (outputs1.size() != outputs2.size()) { 3661 return false; 3662 } 3663 for (size_t i = 0; i < outputs1.size(); i++) { 3664 if (outputs1[i] != outputs2[i]) { 3665 return false; 3666 } 3667 } 3668 return true; 3669 } 3670 3671 void AudioPolicyManager::checkOutputForStrategy(routing_strategy strategy) 3672 { 3673 audio_devices_t oldDevice = getDeviceForStrategy(strategy, true /*fromCache*/); 3674 audio_devices_t newDevice = getDeviceForStrategy(strategy, false /*fromCache*/); 3675 SortedVector<audio_io_handle_t> srcOutputs = getOutputsForDevice(oldDevice, mPreviousOutputs); 3676 SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(newDevice, mOutputs); 3677 3678 if (!vectorsEqual(srcOutputs,dstOutputs)) { 3679 ALOGV("checkOutputForStrategy() strategy %d, moving from output %d to output %d", 3680 strategy, srcOutputs[0], dstOutputs[0]); 3681 // mute strategy while moving tracks from one output to another 3682 for (size_t i = 0; i < srcOutputs.size(); i++) { 3683 sp<AudioOutputDescriptor> desc = mOutputs.valueFor(srcOutputs[i]); 3684 if (desc->isStrategyActive(strategy)) { 3685 setStrategyMute(strategy, true, srcOutputs[i]); 3686 setStrategyMute(strategy, false, srcOutputs[i], MUTE_TIME_MS, newDevice); 3687 } 3688 } 3689 3690 // Move effects associated to this strategy from previous output to new output 3691 if (strategy == STRATEGY_MEDIA) { 3692 audio_io_handle_t fxOutput = selectOutputForEffects(dstOutputs); 3693 SortedVector<audio_io_handle_t> moved; 3694 for (size_t i = 0; i < mEffects.size(); i++) { 3695 sp<EffectDescriptor> effectDesc = mEffects.valueAt(i); 3696 if (effectDesc->mSession == AUDIO_SESSION_OUTPUT_MIX && 3697 effectDesc->mIo != fxOutput) { 3698 if (moved.indexOf(effectDesc->mIo) < 0) { 3699 ALOGV("checkOutputForStrategy() moving effect %d to output %d", 3700 mEffects.keyAt(i), fxOutput); 3701 mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, effectDesc->mIo, 3702 fxOutput); 3703 moved.add(effectDesc->mIo); 3704 } 3705 effectDesc->mIo = fxOutput; 3706 } 3707 } 3708 } 3709 // Move tracks associated to this strategy from previous output to new output 3710 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 3711 if (getStrategy((audio_stream_type_t)i) == strategy) { 3712 mpClientInterface->invalidateStream((audio_stream_type_t)i); 3713 } 3714 } 3715 } 3716 } 3717 3718 void AudioPolicyManager::checkOutputForAllStrategies() 3719 { 3720 if (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED) 3721 checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE); 3722 checkOutputForStrategy(STRATEGY_PHONE); 3723 if (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] != AUDIO_POLICY_FORCE_SYSTEM_ENFORCED) 3724 checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE); 3725 checkOutputForStrategy(STRATEGY_SONIFICATION); 3726 checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL); 3727 checkOutputForStrategy(STRATEGY_MEDIA); 3728 checkOutputForStrategy(STRATEGY_DTMF); 3729 } 3730 3731 audio_io_handle_t AudioPolicyManager::getA2dpOutput() 3732 { 3733 for (size_t i = 0; i < mOutputs.size(); i++) { 3734 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(i); 3735 if (!outputDesc->isDuplicated() && outputDesc->device() & AUDIO_DEVICE_OUT_ALL_A2DP) { 3736 return mOutputs.keyAt(i); 3737 } 3738 } 3739 3740 return 0; 3741 } 3742 3743 void AudioPolicyManager::checkA2dpSuspend() 3744 { 3745 audio_io_handle_t a2dpOutput = getA2dpOutput(); 3746 if (a2dpOutput == 0) { 3747 mA2dpSuspended = false; 3748 return; 3749 } 3750 3751 bool isScoConnected = 3752 (mAvailableInputDevices.types() & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) != 0; 3753 // suspend A2DP output if: 3754 // (NOT already suspended) && 3755 // ((SCO device is connected && 3756 // (forced usage for communication || for record is SCO))) || 3757 // (phone state is ringing || in call) 3758 // 3759 // restore A2DP output if: 3760 // (Already suspended) && 3761 // ((SCO device is NOT connected || 3762 // (forced usage NOT for communication && NOT for record is SCO))) && 3763 // (phone state is NOT ringing && NOT in call) 3764 // 3765 if (mA2dpSuspended) { 3766 if ((!isScoConnected || 3767 ((mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] != AUDIO_POLICY_FORCE_BT_SCO) && 3768 (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] != AUDIO_POLICY_FORCE_BT_SCO))) && 3769 ((mPhoneState != AUDIO_MODE_IN_CALL) && 3770 (mPhoneState != AUDIO_MODE_RINGTONE))) { 3771 3772 mpClientInterface->restoreOutput(a2dpOutput); 3773 mA2dpSuspended = false; 3774 } 3775 } else { 3776 if ((isScoConnected && 3777 ((mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] == AUDIO_POLICY_FORCE_BT_SCO) || 3778 (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] == AUDIO_POLICY_FORCE_BT_SCO))) || 3779 ((mPhoneState == AUDIO_MODE_IN_CALL) || 3780 (mPhoneState == AUDIO_MODE_RINGTONE))) { 3781 3782 mpClientInterface->suspendOutput(a2dpOutput); 3783 mA2dpSuspended = true; 3784 } 3785 } 3786 } 3787 3788 audio_devices_t AudioPolicyManager::getNewOutputDevice(audio_io_handle_t output, bool fromCache) 3789 { 3790 audio_devices_t device = AUDIO_DEVICE_NONE; 3791 3792 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3793 3794 ssize_t index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 3795 if (index >= 0) { 3796 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3797 if (patchDesc->mUid != mUidCached) { 3798 ALOGV("getNewOutputDevice() device %08x forced by patch %d", 3799 outputDesc->device(), outputDesc->mPatchHandle); 3800 return outputDesc->device(); 3801 } 3802 } 3803 3804 // check the following by order of priority to request a routing change if necessary: 3805 // 1: the strategy enforced audible is active and enforced on the output: 3806 // use device for strategy enforced audible 3807 // 2: we are in call or the strategy phone is active on the output: 3808 // use device for strategy phone 3809 // 3: the strategy for enforced audible is active but not enforced on the output: 3810 // use the device for strategy enforced audible 3811 // 4: the strategy sonification is active on the output: 3812 // use device for strategy sonification 3813 // 5: the strategy "respectful" sonification is active on the output: 3814 // use device for strategy "respectful" sonification 3815 // 6: the strategy media is active on the output: 3816 // use device for strategy media 3817 // 7: the strategy DTMF is active on the output: 3818 // use device for strategy DTMF 3819 if (outputDesc->isStrategyActive(STRATEGY_ENFORCED_AUDIBLE) && 3820 mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED) { 3821 device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache); 3822 } else if (isInCall() || 3823 outputDesc->isStrategyActive(STRATEGY_PHONE)) { 3824 device = getDeviceForStrategy(STRATEGY_PHONE, fromCache); 3825 } else if (outputDesc->isStrategyActive(STRATEGY_ENFORCED_AUDIBLE)) { 3826 device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache); 3827 } else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION)) { 3828 device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache); 3829 } else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION_RESPECTFUL)) { 3830 device = getDeviceForStrategy(STRATEGY_SONIFICATION_RESPECTFUL, fromCache); 3831 } else if (outputDesc->isStrategyActive(STRATEGY_MEDIA)) { 3832 device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache); 3833 } else if (outputDesc->isStrategyActive(STRATEGY_DTMF)) { 3834 device = getDeviceForStrategy(STRATEGY_DTMF, fromCache); 3835 } 3836 3837 ALOGV("getNewOutputDevice() selected device %x", device); 3838 return device; 3839 } 3840 3841 audio_devices_t AudioPolicyManager::getNewInputDevice(audio_io_handle_t input) 3842 { 3843 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 3844 3845 ssize_t index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 3846 if (index >= 0) { 3847 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3848 if (patchDesc->mUid != mUidCached) { 3849 ALOGV("getNewInputDevice() device %08x forced by patch %d", 3850 inputDesc->mDevice, inputDesc->mPatchHandle); 3851 return inputDesc->mDevice; 3852 } 3853 } 3854 3855 audio_devices_t device = getDeviceForInputSource(inputDesc->mInputSource); 3856 3857 ALOGV("getNewInputDevice() selected device %x", device); 3858 return device; 3859 } 3860 3861 uint32_t AudioPolicyManager::getStrategyForStream(audio_stream_type_t stream) { 3862 return (uint32_t)getStrategy(stream); 3863 } 3864 3865 audio_devices_t AudioPolicyManager::getDevicesForStream(audio_stream_type_t stream) { 3866 // By checking the range of stream before calling getStrategy, we avoid 3867 // getStrategy's behavior for invalid streams. getStrategy would do a ALOGE 3868 // and then return STRATEGY_MEDIA, but we want to return the empty set. 3869 if (stream < (audio_stream_type_t) 0 || stream >= AUDIO_STREAM_CNT) { 3870 return AUDIO_DEVICE_NONE; 3871 } 3872 audio_devices_t devices; 3873 AudioPolicyManager::routing_strategy strategy = getStrategy(stream); 3874 devices = getDeviceForStrategy(strategy, true /*fromCache*/); 3875 SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(devices, mOutputs); 3876 for (size_t i = 0; i < outputs.size(); i++) { 3877 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(outputs[i]); 3878 if (outputDesc->isStrategyActive(strategy)) { 3879 devices = outputDesc->device(); 3880 break; 3881 } 3882 } 3883 3884 /*Filter SPEAKER_SAFE out of results, as AudioService doesn't know about it 3885 and doesn't really need to.*/ 3886 if (devices & AUDIO_DEVICE_OUT_SPEAKER_SAFE) { 3887 devices |= AUDIO_DEVICE_OUT_SPEAKER; 3888 devices &= ~AUDIO_DEVICE_OUT_SPEAKER_SAFE; 3889 } 3890 3891 return devices; 3892 } 3893 3894 AudioPolicyManager::routing_strategy AudioPolicyManager::getStrategy( 3895 audio_stream_type_t stream) { 3896 // stream to strategy mapping 3897 switch (stream) { 3898 case AUDIO_STREAM_VOICE_CALL: 3899 case AUDIO_STREAM_BLUETOOTH_SCO: 3900 return STRATEGY_PHONE; 3901 case AUDIO_STREAM_RING: 3902 case AUDIO_STREAM_ALARM: 3903 return STRATEGY_SONIFICATION; 3904 case AUDIO_STREAM_NOTIFICATION: 3905 return STRATEGY_SONIFICATION_RESPECTFUL; 3906 case AUDIO_STREAM_DTMF: 3907 return STRATEGY_DTMF; 3908 default: 3909 ALOGE("unknown stream type"); 3910 case AUDIO_STREAM_SYSTEM: 3911 // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs 3912 // while key clicks are played produces a poor result 3913 case AUDIO_STREAM_TTS: 3914 case AUDIO_STREAM_MUSIC: 3915 return STRATEGY_MEDIA; 3916 case AUDIO_STREAM_ENFORCED_AUDIBLE: 3917 return STRATEGY_ENFORCED_AUDIBLE; 3918 } 3919 } 3920 3921 uint32_t AudioPolicyManager::getStrategyForAttr(const audio_attributes_t *attr) { 3922 // flags to strategy mapping 3923 if ((attr->flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) { 3924 return (uint32_t) STRATEGY_ENFORCED_AUDIBLE; 3925 } 3926 3927 // usage to strategy mapping 3928 switch (attr->usage) { 3929 case AUDIO_USAGE_MEDIA: 3930 case AUDIO_USAGE_GAME: 3931 case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY: 3932 case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: 3933 case AUDIO_USAGE_ASSISTANCE_SONIFICATION: 3934 return (uint32_t) STRATEGY_MEDIA; 3935 3936 case AUDIO_USAGE_VOICE_COMMUNICATION: 3937 return (uint32_t) STRATEGY_PHONE; 3938 3939 case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING: 3940 return (uint32_t) STRATEGY_DTMF; 3941 3942 case AUDIO_USAGE_ALARM: 3943 case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE: 3944 return (uint32_t) STRATEGY_SONIFICATION; 3945 3946 case AUDIO_USAGE_NOTIFICATION: 3947 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST: 3948 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT: 3949 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED: 3950 case AUDIO_USAGE_NOTIFICATION_EVENT: 3951 return (uint32_t) STRATEGY_SONIFICATION_RESPECTFUL; 3952 3953 case AUDIO_USAGE_UNKNOWN: 3954 default: 3955 return (uint32_t) STRATEGY_MEDIA; 3956 } 3957 } 3958 3959 void AudioPolicyManager::handleNotificationRoutingForStream(audio_stream_type_t stream) { 3960 switch(stream) { 3961 case AUDIO_STREAM_MUSIC: 3962 checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL); 3963 updateDevicesAndOutputs(); 3964 break; 3965 default: 3966 break; 3967 } 3968 } 3969 3970 audio_devices_t AudioPolicyManager::getDeviceForStrategy(routing_strategy strategy, 3971 bool fromCache) 3972 { 3973 uint32_t device = AUDIO_DEVICE_NONE; 3974 3975 if (fromCache) { 3976 ALOGVV("getDeviceForStrategy() from cache strategy %d, device %x", 3977 strategy, mDeviceForStrategy[strategy]); 3978 return mDeviceForStrategy[strategy]; 3979 } 3980 audio_devices_t availableOutputDeviceTypes = mAvailableOutputDevices.types(); 3981 switch (strategy) { 3982 3983 case STRATEGY_SONIFICATION_RESPECTFUL: 3984 if (isInCall()) { 3985 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 3986 } else if (isStreamActiveRemotely(AUDIO_STREAM_MUSIC, 3987 SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) { 3988 // while media is playing on a remote device, use the the sonification behavior. 3989 // Note that we test this usecase before testing if media is playing because 3990 // the isStreamActive() method only informs about the activity of a stream, not 3991 // if it's for local playback. Note also that we use the same delay between both tests 3992 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 3993 //user "safe" speaker if available instead of normal speaker to avoid triggering 3994 //other acoustic safety mechanisms for notification 3995 if (device == AUDIO_DEVICE_OUT_SPEAKER && (availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER_SAFE)) 3996 device = AUDIO_DEVICE_OUT_SPEAKER_SAFE; 3997 } else if (isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) { 3998 // while media is playing (or has recently played), use the same device 3999 device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/); 4000 } else { 4001 // when media is not playing anymore, fall back on the sonification behavior 4002 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 4003 //user "safe" speaker if available instead of normal speaker to avoid triggering 4004 //other acoustic safety mechanisms for notification 4005 if (device == AUDIO_DEVICE_OUT_SPEAKER && (availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER_SAFE)) 4006 device = AUDIO_DEVICE_OUT_SPEAKER_SAFE; 4007 } 4008 4009 break; 4010 4011 case STRATEGY_DTMF: 4012 if (!isInCall()) { 4013 // when off call, DTMF strategy follows the same rules as MEDIA strategy 4014 device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/); 4015 break; 4016 } 4017 // when in call, DTMF and PHONE strategies follow the same rules 4018 // FALL THROUGH 4019 4020 case STRATEGY_PHONE: 4021 // Force use of only devices on primary output if: 4022 // - in call AND 4023 // - cannot route from voice call RX OR 4024 // - audio HAL version is < 3.0 and TX device is on the primary HW module 4025 if (mPhoneState == AUDIO_MODE_IN_CALL) { 4026 audio_devices_t txDevice = getDeviceForInputSource(AUDIO_SOURCE_VOICE_COMMUNICATION); 4027 sp<AudioOutputDescriptor> hwOutputDesc = mOutputs.valueFor(mPrimaryOutput); 4028 if (((mAvailableInputDevices.types() & 4029 AUDIO_DEVICE_IN_TELEPHONY_RX & ~AUDIO_DEVICE_BIT_IN) == 0) || 4030 (((txDevice & availablePrimaryInputDevices() & ~AUDIO_DEVICE_BIT_IN) != 0) && 4031 (hwOutputDesc->getAudioPort()->mModule->mHalVersion < 4032 AUDIO_DEVICE_API_VERSION_3_0))) { 4033 availableOutputDeviceTypes = availablePrimaryOutputDevices(); 4034 } 4035 } 4036 // for phone strategy, we first consider the forced use and then the available devices by order 4037 // of priority 4038 switch (mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]) { 4039 case AUDIO_POLICY_FORCE_BT_SCO: 4040 if (!isInCall() || strategy != STRATEGY_DTMF) { 4041 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT; 4042 if (device) break; 4043 } 4044 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET; 4045 if (device) break; 4046 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO; 4047 if (device) break; 4048 // if SCO device is requested but no SCO device is available, fall back to default case 4049 // FALL THROUGH 4050 4051 default: // FORCE_NONE 4052 // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP 4053 if (!isInCall() && 4054 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 4055 (getA2dpOutput() != 0) && !mA2dpSuspended) { 4056 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP; 4057 if (device) break; 4058 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; 4059 if (device) break; 4060 } 4061 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADPHONE; 4062 if (device) break; 4063 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADSET; 4064 if (device) break; 4065 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 4066 if (device) break; 4067 if (mPhoneState != AUDIO_MODE_IN_CALL) { 4068 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 4069 if (device) break; 4070 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 4071 if (device) break; 4072 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 4073 if (device) break; 4074 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 4075 if (device) break; 4076 } 4077 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_EARPIECE; 4078 if (device) break; 4079 device = mDefaultOutputDevice->mDeviceType; 4080 if (device == AUDIO_DEVICE_NONE) { 4081 ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE"); 4082 } 4083 break; 4084 4085 case AUDIO_POLICY_FORCE_SPEAKER: 4086 // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to 4087 // A2DP speaker when forcing to speaker output 4088 if (!isInCall() && 4089 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 4090 (getA2dpOutput() != 0) && !mA2dpSuspended) { 4091 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; 4092 if (device) break; 4093 } 4094 if (mPhoneState != AUDIO_MODE_IN_CALL) { 4095 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 4096 if (device) break; 4097 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 4098 if (device) break; 4099 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 4100 if (device) break; 4101 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 4102 if (device) break; 4103 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 4104 if (device) break; 4105 } 4106 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_LINE; 4107 if (device) break; 4108 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 4109 if (device) break; 4110 device = mDefaultOutputDevice->mDeviceType; 4111 if (device == AUDIO_DEVICE_NONE) { 4112 ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE, FORCE_SPEAKER"); 4113 } 4114 break; 4115 } 4116 break; 4117 4118 case STRATEGY_SONIFICATION: 4119 4120 // If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by 4121 // handleIncallSonification(). 4122 if (isInCall()) { 4123 device = getDeviceForStrategy(STRATEGY_PHONE, false /*fromCache*/); 4124 break; 4125 } 4126 // FALL THROUGH 4127 4128 case STRATEGY_ENFORCED_AUDIBLE: 4129 // strategy STRATEGY_ENFORCED_AUDIBLE uses same routing policy as STRATEGY_SONIFICATION 4130 // except: 4131 // - when in call where it doesn't default to STRATEGY_PHONE behavior 4132 // - in countries where not enforced in which case it follows STRATEGY_MEDIA 4133 4134 if ((strategy == STRATEGY_SONIFICATION) || 4135 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED)) { 4136 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 4137 if (device == AUDIO_DEVICE_NONE) { 4138 ALOGE("getDeviceForStrategy() speaker device not found for STRATEGY_SONIFICATION"); 4139 } 4140 } 4141 // The second device used for sonification is the same as the device used by media strategy 4142 // FALL THROUGH 4143 4144 case STRATEGY_MEDIA: { 4145 uint32_t device2 = AUDIO_DEVICE_NONE; 4146 if (strategy != STRATEGY_SONIFICATION) { 4147 // no sonification on remote submix (e.g. WFD) 4148 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_REMOTE_SUBMIX; 4149 } 4150 if ((device2 == AUDIO_DEVICE_NONE) && 4151 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 4152 (getA2dpOutput() != 0) && !mA2dpSuspended) { 4153 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP; 4154 if (device2 == AUDIO_DEVICE_NONE) { 4155 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; 4156 } 4157 if (device2 == AUDIO_DEVICE_NONE) { 4158 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; 4159 } 4160 } 4161 if (device2 == AUDIO_DEVICE_NONE) { 4162 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADPHONE; 4163 } 4164 if ((device2 == AUDIO_DEVICE_NONE)) { 4165 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_LINE; 4166 } 4167 if (device2 == AUDIO_DEVICE_NONE) { 4168 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADSET; 4169 } 4170 if (device2 == AUDIO_DEVICE_NONE) { 4171 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 4172 } 4173 if (device2 == AUDIO_DEVICE_NONE) { 4174 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 4175 } 4176 if (device2 == AUDIO_DEVICE_NONE) { 4177 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 4178 } 4179 if ((device2 == AUDIO_DEVICE_NONE) && (strategy != STRATEGY_SONIFICATION)) { 4180 // no sonification on aux digital (e.g. HDMI) 4181 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 4182 } 4183 if ((device2 == AUDIO_DEVICE_NONE) && 4184 (mForceUse[AUDIO_POLICY_FORCE_FOR_DOCK] == AUDIO_POLICY_FORCE_ANALOG_DOCK)) { 4185 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 4186 } 4187 if (device2 == AUDIO_DEVICE_NONE) { 4188 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 4189 } 4190 int device3 = AUDIO_DEVICE_NONE; 4191 if (strategy == STRATEGY_MEDIA) { 4192 // ARC, SPDIF and AUX_LINE can co-exist with others. 4193 device3 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_HDMI_ARC; 4194 device3 |= (availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPDIF); 4195 device3 |= (availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_LINE); 4196 } 4197 4198 device2 |= device3; 4199 // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or 4200 // STRATEGY_ENFORCED_AUDIBLE, AUDIO_DEVICE_NONE otherwise 4201 device |= device2; 4202 4203 // If hdmi system audio mode is on, remove speaker out of output list. 4204 if ((strategy == STRATEGY_MEDIA) && 4205 (mForceUse[AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO] == 4206 AUDIO_POLICY_FORCE_HDMI_SYSTEM_AUDIO_ENFORCED)) { 4207 device &= ~AUDIO_DEVICE_OUT_SPEAKER; 4208 } 4209 4210 if (device) break; 4211 device = mDefaultOutputDevice->mDeviceType; 4212 if (device == AUDIO_DEVICE_NONE) { 4213 ALOGE("getDeviceForStrategy() no device found for STRATEGY_MEDIA"); 4214 } 4215 } break; 4216 4217 default: 4218 ALOGW("getDeviceForStrategy() unknown strategy: %d", strategy); 4219 break; 4220 } 4221 4222 ALOGVV("getDeviceForStrategy() strategy %d, device %x", strategy, device); 4223 return device; 4224 } 4225 4226 void AudioPolicyManager::updateDevicesAndOutputs() 4227 { 4228 for (int i = 0; i < NUM_STRATEGIES; i++) { 4229 mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/); 4230 } 4231 mPreviousOutputs = mOutputs; 4232 } 4233 4234 uint32_t AudioPolicyManager::checkDeviceMuteStrategies(sp<AudioOutputDescriptor> outputDesc, 4235 audio_devices_t prevDevice, 4236 uint32_t delayMs) 4237 { 4238 // mute/unmute strategies using an incompatible device combination 4239 // if muting, wait for the audio in pcm buffer to be drained before proceeding 4240 // if unmuting, unmute only after the specified delay 4241 if (outputDesc->isDuplicated()) { 4242 return 0; 4243 } 4244 4245 uint32_t muteWaitMs = 0; 4246 audio_devices_t device = outputDesc->device(); 4247 bool shouldMute = outputDesc->isActive() && (popcount(device) >= 2); 4248 4249 for (size_t i = 0; i < NUM_STRATEGIES; i++) { 4250 audio_devices_t curDevice = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/); 4251 bool mute = shouldMute && (curDevice & device) && (curDevice != device); 4252 bool doMute = false; 4253 4254 if (mute && !outputDesc->mStrategyMutedByDevice[i]) { 4255 doMute = true; 4256 outputDesc->mStrategyMutedByDevice[i] = true; 4257 } else if (!mute && outputDesc->mStrategyMutedByDevice[i]){ 4258 doMute = true; 4259 outputDesc->mStrategyMutedByDevice[i] = false; 4260 } 4261 if (doMute) { 4262 for (size_t j = 0; j < mOutputs.size(); j++) { 4263 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(j); 4264 // skip output if it does not share any device with current output 4265 if ((desc->supportedDevices() & outputDesc->supportedDevices()) 4266 == AUDIO_DEVICE_NONE) { 4267 continue; 4268 } 4269 audio_io_handle_t curOutput = mOutputs.keyAt(j); 4270 ALOGVV("checkDeviceMuteStrategies() %s strategy %d (curDevice %04x) on output %d", 4271 mute ? "muting" : "unmuting", i, curDevice, curOutput); 4272 setStrategyMute((routing_strategy)i, mute, curOutput, mute ? 0 : delayMs); 4273 if (desc->isStrategyActive((routing_strategy)i)) { 4274 if (mute) { 4275 // FIXME: should not need to double latency if volume could be applied 4276 // immediately by the audioflinger mixer. We must account for the delay 4277 // between now and the next time the audioflinger thread for this output 4278 // will process a buffer (which corresponds to one buffer size, 4279 // usually 1/2 or 1/4 of the latency). 4280 if (muteWaitMs < desc->latency() * 2) { 4281 muteWaitMs = desc->latency() * 2; 4282 } 4283 } 4284 } 4285 } 4286 } 4287 } 4288 4289 // temporary mute output if device selection changes to avoid volume bursts due to 4290 // different per device volumes 4291 if (outputDesc->isActive() && (device != prevDevice)) { 4292 if (muteWaitMs < outputDesc->latency() * 2) { 4293 muteWaitMs = outputDesc->latency() * 2; 4294 } 4295 for (size_t i = 0; i < NUM_STRATEGIES; i++) { 4296 if (outputDesc->isStrategyActive((routing_strategy)i)) { 4297 setStrategyMute((routing_strategy)i, true, outputDesc->mIoHandle); 4298 // do tempMute unmute after twice the mute wait time 4299 setStrategyMute((routing_strategy)i, false, outputDesc->mIoHandle, 4300 muteWaitMs *2, device); 4301 } 4302 } 4303 } 4304 4305 // wait for the PCM output buffers to empty before proceeding with the rest of the command 4306 if (muteWaitMs > delayMs) { 4307 muteWaitMs -= delayMs; 4308 usleep(muteWaitMs * 1000); 4309 return muteWaitMs; 4310 } 4311 return 0; 4312 } 4313 4314 uint32_t AudioPolicyManager::setOutputDevice(audio_io_handle_t output, 4315 audio_devices_t device, 4316 bool force, 4317 int delayMs, 4318 audio_patch_handle_t *patchHandle, 4319 const char* address) 4320 { 4321 ALOGV("setOutputDevice() output %d device %04x delayMs %d", output, device, delayMs); 4322 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 4323 AudioParameter param; 4324 uint32_t muteWaitMs; 4325 4326 if (outputDesc->isDuplicated()) { 4327 muteWaitMs = setOutputDevice(outputDesc->mOutput1->mIoHandle, device, force, delayMs); 4328 muteWaitMs += setOutputDevice(outputDesc->mOutput2->mIoHandle, device, force, delayMs); 4329 return muteWaitMs; 4330 } 4331 // no need to proceed if new device is not AUDIO_DEVICE_NONE and not supported by current 4332 // output profile 4333 if ((device != AUDIO_DEVICE_NONE) && 4334 ((device & outputDesc->mProfile->mSupportedDevices.types()) == 0)) { 4335 return 0; 4336 } 4337 4338 // filter devices according to output selected 4339 device = (audio_devices_t)(device & outputDesc->mProfile->mSupportedDevices.types()); 4340 4341 audio_devices_t prevDevice = outputDesc->mDevice; 4342 4343 ALOGV("setOutputDevice() prevDevice %04x", prevDevice); 4344 4345 if (device != AUDIO_DEVICE_NONE) { 4346 outputDesc->mDevice = device; 4347 } 4348 muteWaitMs = checkDeviceMuteStrategies(outputDesc, prevDevice, delayMs); 4349 4350 // Do not change the routing if: 4351 // - the requested device is AUDIO_DEVICE_NONE 4352 // - the requested device is the same as current device and force is not specified. 4353 // Doing this check here allows the caller to call setOutputDevice() without conditions 4354 if ((device == AUDIO_DEVICE_NONE || device == prevDevice) && !force) { 4355 ALOGV("setOutputDevice() setting same device %04x or null device for output %d", device, output); 4356 return muteWaitMs; 4357 } 4358 4359 ALOGV("setOutputDevice() changing device"); 4360 4361 // do the routing 4362 if (device == AUDIO_DEVICE_NONE) { 4363 resetOutputDevice(output, delayMs, NULL); 4364 } else { 4365 DeviceVector deviceList = (address == NULL) ? 4366 mAvailableOutputDevices.getDevicesFromType(device) 4367 : mAvailableOutputDevices.getDevicesFromTypeAddr(device, String8(address)); 4368 if (!deviceList.isEmpty()) { 4369 struct audio_patch patch; 4370 outputDesc->toAudioPortConfig(&patch.sources[0]); 4371 patch.num_sources = 1; 4372 patch.num_sinks = 0; 4373 for (size_t i = 0; i < deviceList.size() && i < AUDIO_PATCH_PORTS_MAX; i++) { 4374 deviceList.itemAt(i)->toAudioPortConfig(&patch.sinks[i]); 4375 patch.num_sinks++; 4376 } 4377 ssize_t index; 4378 if (patchHandle && *patchHandle != AUDIO_PATCH_HANDLE_NONE) { 4379 index = mAudioPatches.indexOfKey(*patchHandle); 4380 } else { 4381 index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 4382 } 4383 sp< AudioPatch> patchDesc; 4384 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 4385 if (index >= 0) { 4386 patchDesc = mAudioPatches.valueAt(index); 4387 afPatchHandle = patchDesc->mAfPatchHandle; 4388 } 4389 4390 status_t status = mpClientInterface->createAudioPatch(&patch, 4391 &afPatchHandle, 4392 delayMs); 4393 ALOGV("setOutputDevice() createAudioPatch returned %d patchHandle %d" 4394 "num_sources %d num_sinks %d", 4395 status, afPatchHandle, patch.num_sources, patch.num_sinks); 4396 if (status == NO_ERROR) { 4397 if (index < 0) { 4398 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 4399 &patch, mUidCached); 4400 addAudioPatch(patchDesc->mHandle, patchDesc); 4401 } else { 4402 patchDesc->mPatch = patch; 4403 } 4404 patchDesc->mAfPatchHandle = afPatchHandle; 4405 patchDesc->mUid = mUidCached; 4406 if (patchHandle) { 4407 *patchHandle = patchDesc->mHandle; 4408 } 4409 outputDesc->mPatchHandle = patchDesc->mHandle; 4410 nextAudioPortGeneration(); 4411 mpClientInterface->onAudioPatchListUpdate(); 4412 } 4413 } 4414 4415 // inform all input as well 4416 for (size_t i = 0; i < mInputs.size(); i++) { 4417 const sp<AudioInputDescriptor> inputDescriptor = mInputs.valueAt(i); 4418 if (!isVirtualInputDevice(inputDescriptor->mDevice)) { 4419 AudioParameter inputCmd = AudioParameter(); 4420 ALOGV("%s: inform input %d of device:%d", __func__, 4421 inputDescriptor->mIoHandle, device); 4422 inputCmd.addInt(String8(AudioParameter::keyRouting),device); 4423 mpClientInterface->setParameters(inputDescriptor->mIoHandle, 4424 inputCmd.toString(), 4425 delayMs); 4426 } 4427 } 4428 } 4429 4430 // update stream volumes according to new device 4431 applyStreamVolumes(output, device, delayMs); 4432 4433 return muteWaitMs; 4434 } 4435 4436 status_t AudioPolicyManager::resetOutputDevice(audio_io_handle_t output, 4437 int delayMs, 4438 audio_patch_handle_t *patchHandle) 4439 { 4440 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 4441 ssize_t index; 4442 if (patchHandle) { 4443 index = mAudioPatches.indexOfKey(*patchHandle); 4444 } else { 4445 index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 4446 } 4447 if (index < 0) { 4448 return INVALID_OPERATION; 4449 } 4450 sp< AudioPatch> patchDesc = mAudioPatches.valueAt(index); 4451 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, delayMs); 4452 ALOGV("resetOutputDevice() releaseAudioPatch returned %d", status); 4453 outputDesc->mPatchHandle = 0; 4454 removeAudioPatch(patchDesc->mHandle); 4455 nextAudioPortGeneration(); 4456 mpClientInterface->onAudioPatchListUpdate(); 4457 return status; 4458 } 4459 4460 status_t AudioPolicyManager::setInputDevice(audio_io_handle_t input, 4461 audio_devices_t device, 4462 bool force, 4463 audio_patch_handle_t *patchHandle) 4464 { 4465 status_t status = NO_ERROR; 4466 4467 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 4468 if ((device != AUDIO_DEVICE_NONE) && ((device != inputDesc->mDevice) || force)) { 4469 inputDesc->mDevice = device; 4470 4471 DeviceVector deviceList = mAvailableInputDevices.getDevicesFromType(device); 4472 if (!deviceList.isEmpty()) { 4473 struct audio_patch patch; 4474 inputDesc->toAudioPortConfig(&patch.sinks[0]); 4475 // AUDIO_SOURCE_HOTWORD is for internal use only: 4476 // handled as AUDIO_SOURCE_VOICE_RECOGNITION by the audio HAL 4477 if (patch.sinks[0].ext.mix.usecase.source == AUDIO_SOURCE_HOTWORD && 4478 !inputDesc->mIsSoundTrigger) { 4479 patch.sinks[0].ext.mix.usecase.source = AUDIO_SOURCE_VOICE_RECOGNITION; 4480 } 4481 patch.num_sinks = 1; 4482 //only one input device for now 4483 deviceList.itemAt(0)->toAudioPortConfig(&patch.sources[0]); 4484 patch.num_sources = 1; 4485 ssize_t index; 4486 if (patchHandle && *patchHandle != AUDIO_PATCH_HANDLE_NONE) { 4487 index = mAudioPatches.indexOfKey(*patchHandle); 4488 } else { 4489 index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 4490 } 4491 sp< AudioPatch> patchDesc; 4492 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 4493 if (index >= 0) { 4494 patchDesc = mAudioPatches.valueAt(index); 4495 afPatchHandle = patchDesc->mAfPatchHandle; 4496 } 4497 4498 status_t status = mpClientInterface->createAudioPatch(&patch, 4499 &afPatchHandle, 4500 0); 4501 ALOGV("setInputDevice() createAudioPatch returned %d patchHandle %d", 4502 status, afPatchHandle); 4503 if (status == NO_ERROR) { 4504 if (index < 0) { 4505 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 4506 &patch, mUidCached); 4507 addAudioPatch(patchDesc->mHandle, patchDesc); 4508 } else { 4509 patchDesc->mPatch = patch; 4510 } 4511 patchDesc->mAfPatchHandle = afPatchHandle; 4512 patchDesc->mUid = mUidCached; 4513 if (patchHandle) { 4514 *patchHandle = patchDesc->mHandle; 4515 } 4516 inputDesc->mPatchHandle = patchDesc->mHandle; 4517 nextAudioPortGeneration(); 4518 mpClientInterface->onAudioPatchListUpdate(); 4519 } 4520 } 4521 } 4522 return status; 4523 } 4524 4525 status_t AudioPolicyManager::resetInputDevice(audio_io_handle_t input, 4526 audio_patch_handle_t *patchHandle) 4527 { 4528 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 4529 ssize_t index; 4530 if (patchHandle) { 4531 index = mAudioPatches.indexOfKey(*patchHandle); 4532 } else { 4533 index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 4534 } 4535 if (index < 0) { 4536 return INVALID_OPERATION; 4537 } 4538 sp< AudioPatch> patchDesc = mAudioPatches.valueAt(index); 4539 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 4540 ALOGV("resetInputDevice() releaseAudioPatch returned %d", status); 4541 inputDesc->mPatchHandle = 0; 4542 removeAudioPatch(patchDesc->mHandle); 4543 nextAudioPortGeneration(); 4544 mpClientInterface->onAudioPatchListUpdate(); 4545 return status; 4546 } 4547 4548 sp<AudioPolicyManager::IOProfile> AudioPolicyManager::getInputProfile(audio_devices_t device, 4549 uint32_t& samplingRate, 4550 audio_format_t format, 4551 audio_channel_mask_t channelMask, 4552 audio_input_flags_t flags) 4553 { 4554 // Choose an input profile based on the requested capture parameters: select the first available 4555 // profile supporting all requested parameters. 4556 4557 for (size_t i = 0; i < mHwModules.size(); i++) 4558 { 4559 if (mHwModules[i]->mHandle == 0) { 4560 continue; 4561 } 4562 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) 4563 { 4564 sp<IOProfile> profile = mHwModules[i]->mInputProfiles[j]; 4565 // profile->log(); 4566 if (profile->isCompatibleProfile(device, samplingRate, 4567 &samplingRate /*updatedSamplingRate*/, 4568 format, channelMask, (audio_output_flags_t) flags)) { 4569 return profile; 4570 } 4571 } 4572 } 4573 return NULL; 4574 } 4575 4576 audio_devices_t AudioPolicyManager::getDeviceForInputSource(audio_source_t inputSource) 4577 { 4578 uint32_t device = AUDIO_DEVICE_NONE; 4579 audio_devices_t availableDeviceTypes = mAvailableInputDevices.types() & 4580 ~AUDIO_DEVICE_BIT_IN; 4581 switch (inputSource) { 4582 case AUDIO_SOURCE_VOICE_UPLINK: 4583 if (availableDeviceTypes & AUDIO_DEVICE_IN_VOICE_CALL) { 4584 device = AUDIO_DEVICE_IN_VOICE_CALL; 4585 break; 4586 } 4587 break; 4588 4589 case AUDIO_SOURCE_DEFAULT: 4590 case AUDIO_SOURCE_MIC: 4591 if (availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) { 4592 device = AUDIO_DEVICE_IN_BLUETOOTH_A2DP; 4593 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_WIRED_HEADSET) { 4594 device = AUDIO_DEVICE_IN_WIRED_HEADSET; 4595 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_USB_DEVICE) { 4596 device = AUDIO_DEVICE_IN_USB_DEVICE; 4597 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 4598 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 4599 } 4600 break; 4601 4602 case AUDIO_SOURCE_VOICE_COMMUNICATION: 4603 // Allow only use of devices on primary input if in call and HAL does not support routing 4604 // to voice call path. 4605 if ((mPhoneState == AUDIO_MODE_IN_CALL) && 4606 (mAvailableOutputDevices.types() & AUDIO_DEVICE_OUT_TELEPHONY_TX) == 0) { 4607 availableDeviceTypes = availablePrimaryInputDevices() & ~AUDIO_DEVICE_BIT_IN; 4608 } 4609 4610 switch (mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]) { 4611 case AUDIO_POLICY_FORCE_BT_SCO: 4612 // if SCO device is requested but no SCO device is available, fall back to default case 4613 if (availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) { 4614 device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET; 4615 break; 4616 } 4617 // FALL THROUGH 4618 4619 default: // FORCE_NONE 4620 if (availableDeviceTypes & AUDIO_DEVICE_IN_WIRED_HEADSET) { 4621 device = AUDIO_DEVICE_IN_WIRED_HEADSET; 4622 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_USB_DEVICE) { 4623 device = AUDIO_DEVICE_IN_USB_DEVICE; 4624 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 4625 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 4626 } 4627 break; 4628 4629 case AUDIO_POLICY_FORCE_SPEAKER: 4630 if (availableDeviceTypes & AUDIO_DEVICE_IN_BACK_MIC) { 4631 device = AUDIO_DEVICE_IN_BACK_MIC; 4632 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 4633 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 4634 } 4635 break; 4636 } 4637 break; 4638 4639 case AUDIO_SOURCE_VOICE_RECOGNITION: 4640 case AUDIO_SOURCE_HOTWORD: 4641 if (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] == AUDIO_POLICY_FORCE_BT_SCO && 4642 availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) { 4643 device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET; 4644 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_WIRED_HEADSET) { 4645 device = AUDIO_DEVICE_IN_WIRED_HEADSET; 4646 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_USB_DEVICE) { 4647 device = AUDIO_DEVICE_IN_USB_DEVICE; 4648 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 4649 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 4650 } 4651 break; 4652 case AUDIO_SOURCE_CAMCORDER: 4653 if (availableDeviceTypes & AUDIO_DEVICE_IN_BACK_MIC) { 4654 device = AUDIO_DEVICE_IN_BACK_MIC; 4655 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 4656 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 4657 } 4658 break; 4659 case AUDIO_SOURCE_VOICE_DOWNLINK: 4660 case AUDIO_SOURCE_VOICE_CALL: 4661 if (availableDeviceTypes & AUDIO_DEVICE_IN_VOICE_CALL) { 4662 device = AUDIO_DEVICE_IN_VOICE_CALL; 4663 } 4664 break; 4665 case AUDIO_SOURCE_REMOTE_SUBMIX: 4666 if (availableDeviceTypes & AUDIO_DEVICE_IN_REMOTE_SUBMIX) { 4667 device = AUDIO_DEVICE_IN_REMOTE_SUBMIX; 4668 } 4669 break; 4670 default: 4671 ALOGW("getDeviceForInputSource() invalid input source %d", inputSource); 4672 break; 4673 } 4674 ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device); 4675 return device; 4676 } 4677 4678 bool AudioPolicyManager::isVirtualInputDevice(audio_devices_t device) 4679 { 4680 if ((device & AUDIO_DEVICE_BIT_IN) != 0) { 4681 device &= ~AUDIO_DEVICE_BIT_IN; 4682 if ((popcount(device) == 1) && ((device & ~APM_AUDIO_IN_DEVICE_VIRTUAL_ALL) == 0)) 4683 return true; 4684 } 4685 return false; 4686 } 4687 4688 bool AudioPolicyManager::deviceDistinguishesOnAddress(audio_devices_t device) { 4689 return ((device & APM_AUDIO_DEVICE_MATCH_ADDRESS_ALL) != 0); 4690 } 4691 4692 audio_io_handle_t AudioPolicyManager::getActiveInput(bool ignoreVirtualInputs) 4693 { 4694 for (size_t i = 0; i < mInputs.size(); i++) { 4695 const sp<AudioInputDescriptor> input_descriptor = mInputs.valueAt(i); 4696 if ((input_descriptor->mRefCount > 0) 4697 && (!ignoreVirtualInputs || !isVirtualInputDevice(input_descriptor->mDevice))) { 4698 return mInputs.keyAt(i); 4699 } 4700 } 4701 return 0; 4702 } 4703 4704 uint32_t AudioPolicyManager::activeInputsCount() const 4705 { 4706 uint32_t count = 0; 4707 for (size_t i = 0; i < mInputs.size(); i++) { 4708 const sp<AudioInputDescriptor> desc = mInputs.valueAt(i); 4709 if (desc->mRefCount > 0) { 4710 return count++; 4711 } 4712 } 4713 return count; 4714 } 4715 4716 4717 audio_devices_t AudioPolicyManager::getDeviceForVolume(audio_devices_t device) 4718 { 4719 if (device == AUDIO_DEVICE_NONE) { 4720 // this happens when forcing a route update and no track is active on an output. 4721 // In this case the returned category is not important. 4722 device = AUDIO_DEVICE_OUT_SPEAKER; 4723 } else if (popcount(device) > 1) { 4724 // Multiple device selection is either: 4725 // - speaker + one other device: give priority to speaker in this case. 4726 // - one A2DP device + another device: happens with duplicated output. In this case 4727 // retain the device on the A2DP output as the other must not correspond to an active 4728 // selection if not the speaker. 4729 // - HDMI-CEC system audio mode only output: give priority to available item in order. 4730 if (device & AUDIO_DEVICE_OUT_SPEAKER) { 4731 device = AUDIO_DEVICE_OUT_SPEAKER; 4732 } else if (device & AUDIO_DEVICE_OUT_HDMI_ARC) { 4733 device = AUDIO_DEVICE_OUT_HDMI_ARC; 4734 } else if (device & AUDIO_DEVICE_OUT_AUX_LINE) { 4735 device = AUDIO_DEVICE_OUT_AUX_LINE; 4736 } else if (device & AUDIO_DEVICE_OUT_SPDIF) { 4737 device = AUDIO_DEVICE_OUT_SPDIF; 4738 } else { 4739 device = (audio_devices_t)(device & AUDIO_DEVICE_OUT_ALL_A2DP); 4740 } 4741 } 4742 4743 /*SPEAKER_SAFE is an alias of SPEAKER for purposes of volume control*/ 4744 if (device == AUDIO_DEVICE_OUT_SPEAKER_SAFE) 4745 device = AUDIO_DEVICE_OUT_SPEAKER; 4746 4747 ALOGW_IF(popcount(device) != 1, 4748 "getDeviceForVolume() invalid device combination: %08x", 4749 device); 4750 4751 return device; 4752 } 4753 4754 AudioPolicyManager::device_category AudioPolicyManager::getDeviceCategory(audio_devices_t device) 4755 { 4756 switch(getDeviceForVolume(device)) { 4757 case AUDIO_DEVICE_OUT_EARPIECE: 4758 return DEVICE_CATEGORY_EARPIECE; 4759 case AUDIO_DEVICE_OUT_WIRED_HEADSET: 4760 case AUDIO_DEVICE_OUT_WIRED_HEADPHONE: 4761 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO: 4762 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET: 4763 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP: 4764 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES: 4765 return DEVICE_CATEGORY_HEADSET; 4766 case AUDIO_DEVICE_OUT_LINE: 4767 case AUDIO_DEVICE_OUT_AUX_DIGITAL: 4768 /*USB? Remote submix?*/ 4769 return DEVICE_CATEGORY_EXT_MEDIA; 4770 case AUDIO_DEVICE_OUT_SPEAKER: 4771 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT: 4772 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER: 4773 case AUDIO_DEVICE_OUT_USB_ACCESSORY: 4774 case AUDIO_DEVICE_OUT_USB_DEVICE: 4775 case AUDIO_DEVICE_OUT_REMOTE_SUBMIX: 4776 default: 4777 return DEVICE_CATEGORY_SPEAKER; 4778 } 4779 } 4780 4781 float AudioPolicyManager::volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc, 4782 int indexInUi) 4783 { 4784 device_category deviceCategory = getDeviceCategory(device); 4785 const VolumeCurvePoint *curve = streamDesc.mVolumeCurve[deviceCategory]; 4786 4787 // the volume index in the UI is relative to the min and max volume indices for this stream type 4788 int nbSteps = 1 + curve[VOLMAX].mIndex - 4789 curve[VOLMIN].mIndex; 4790 int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) / 4791 (streamDesc.mIndexMax - streamDesc.mIndexMin); 4792 4793 // find what part of the curve this index volume belongs to, or if it's out of bounds 4794 int segment = 0; 4795 if (volIdx < curve[VOLMIN].mIndex) { // out of bounds 4796 return 0.0f; 4797 } else if (volIdx < curve[VOLKNEE1].mIndex) { 4798 segment = 0; 4799 } else if (volIdx < curve[VOLKNEE2].mIndex) { 4800 segment = 1; 4801 } else if (volIdx <= curve[VOLMAX].mIndex) { 4802 segment = 2; 4803 } else { // out of bounds 4804 return 1.0f; 4805 } 4806 4807 // linear interpolation in the attenuation table in dB 4808 float decibels = curve[segment].mDBAttenuation + 4809 ((float)(volIdx - curve[segment].mIndex)) * 4810 ( (curve[segment+1].mDBAttenuation - 4811 curve[segment].mDBAttenuation) / 4812 ((float)(curve[segment+1].mIndex - 4813 curve[segment].mIndex)) ); 4814 4815 float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 ) 4816 4817 ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f", 4818 curve[segment].mIndex, volIdx, 4819 curve[segment+1].mIndex, 4820 curve[segment].mDBAttenuation, 4821 decibels, 4822 curve[segment+1].mDBAttenuation, 4823 amplification); 4824 4825 return amplification; 4826 } 4827 4828 const AudioPolicyManager::VolumeCurvePoint 4829 AudioPolicyManager::sDefaultVolumeCurve[AudioPolicyManager::VOLCNT] = { 4830 {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f} 4831 }; 4832 4833 const AudioPolicyManager::VolumeCurvePoint 4834 AudioPolicyManager::sDefaultMediaVolumeCurve[AudioPolicyManager::VOLCNT] = { 4835 {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f} 4836 }; 4837 4838 const AudioPolicyManager::VolumeCurvePoint 4839 AudioPolicyManager::sExtMediaSystemVolumeCurve[AudioPolicyManager::VOLCNT] = { 4840 {1, -58.0f}, {20, -40.0f}, {60, -21.0f}, {100, -10.0f} 4841 }; 4842 4843 const AudioPolicyManager::VolumeCurvePoint 4844 AudioPolicyManager::sSpeakerMediaVolumeCurve[AudioPolicyManager::VOLCNT] = { 4845 {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f} 4846 }; 4847 4848 const AudioPolicyManager::VolumeCurvePoint 4849 AudioPolicyManager::sSpeakerMediaVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4850 {1, -55.0f}, {20, -43.0f}, {86, -12.0f}, {100, 0.0f} 4851 }; 4852 4853 const AudioPolicyManager::VolumeCurvePoint 4854 AudioPolicyManager::sSpeakerSonificationVolumeCurve[AudioPolicyManager::VOLCNT] = { 4855 {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f} 4856 }; 4857 4858 const AudioPolicyManager::VolumeCurvePoint 4859 AudioPolicyManager::sSpeakerSonificationVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4860 {1, -35.7f}, {33, -26.1f}, {66, -13.2f}, {100, 0.0f} 4861 }; 4862 4863 // AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks 4864 // AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets. 4865 // AUDIO_STREAM_DTMF tracks AUDIO_STREAM_VOICE_CALL while in call (See AudioService.java). 4866 // The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset. 4867 4868 const AudioPolicyManager::VolumeCurvePoint 4869 AudioPolicyManager::sDefaultSystemVolumeCurve[AudioPolicyManager::VOLCNT] = { 4870 {1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f} 4871 }; 4872 4873 const AudioPolicyManager::VolumeCurvePoint 4874 AudioPolicyManager::sDefaultSystemVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4875 {1, -34.0f}, {33, -24.0f}, {66, -15.0f}, {100, -6.0f} 4876 }; 4877 4878 const AudioPolicyManager::VolumeCurvePoint 4879 AudioPolicyManager::sHeadsetSystemVolumeCurve[AudioPolicyManager::VOLCNT] = { 4880 {1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f} 4881 }; 4882 4883 const AudioPolicyManager::VolumeCurvePoint 4884 AudioPolicyManager::sDefaultVoiceVolumeCurve[AudioPolicyManager::VOLCNT] = { 4885 {0, -42.0f}, {33, -28.0f}, {66, -14.0f}, {100, 0.0f} 4886 }; 4887 4888 const AudioPolicyManager::VolumeCurvePoint 4889 AudioPolicyManager::sSpeakerVoiceVolumeCurve[AudioPolicyManager::VOLCNT] = { 4890 {0, -24.0f}, {33, -16.0f}, {66, -8.0f}, {100, 0.0f} 4891 }; 4892 4893 const AudioPolicyManager::VolumeCurvePoint 4894 *AudioPolicyManager::sVolumeProfiles[AUDIO_STREAM_CNT] 4895 [AudioPolicyManager::DEVICE_CATEGORY_CNT] = { 4896 { // AUDIO_STREAM_VOICE_CALL 4897 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET 4898 sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4899 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4900 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4901 }, 4902 { // AUDIO_STREAM_SYSTEM 4903 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4904 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4905 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4906 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4907 }, 4908 { // AUDIO_STREAM_RING 4909 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4910 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4911 sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4912 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4913 }, 4914 { // AUDIO_STREAM_MUSIC 4915 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET 4916 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4917 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4918 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4919 }, 4920 { // AUDIO_STREAM_ALARM 4921 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4922 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4923 sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4924 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4925 }, 4926 { // AUDIO_STREAM_NOTIFICATION 4927 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4928 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4929 sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4930 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4931 }, 4932 { // AUDIO_STREAM_BLUETOOTH_SCO 4933 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET 4934 sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4935 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4936 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4937 }, 4938 { // AUDIO_STREAM_ENFORCED_AUDIBLE 4939 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4940 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4941 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4942 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4943 }, 4944 { // AUDIO_STREAM_DTMF 4945 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4946 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4947 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4948 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4949 }, 4950 { // AUDIO_STREAM_TTS 4951 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET 4952 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4953 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4954 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4955 }, 4956 }; 4957 4958 void AudioPolicyManager::initializeVolumeCurves() 4959 { 4960 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 4961 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { 4962 mStreams[i].mVolumeCurve[j] = 4963 sVolumeProfiles[i][j]; 4964 } 4965 } 4966 4967 // Check availability of DRC on speaker path: if available, override some of the speaker curves 4968 if (mSpeakerDrcEnabled) { 4969 mStreams[AUDIO_STREAM_SYSTEM].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4970 sDefaultSystemVolumeCurveDrc; 4971 mStreams[AUDIO_STREAM_RING].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4972 sSpeakerSonificationVolumeCurveDrc; 4973 mStreams[AUDIO_STREAM_ALARM].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4974 sSpeakerSonificationVolumeCurveDrc; 4975 mStreams[AUDIO_STREAM_NOTIFICATION].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4976 sSpeakerSonificationVolumeCurveDrc; 4977 mStreams[AUDIO_STREAM_MUSIC].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4978 sSpeakerMediaVolumeCurveDrc; 4979 } 4980 } 4981 4982 float AudioPolicyManager::computeVolume(audio_stream_type_t stream, 4983 int index, 4984 audio_io_handle_t output, 4985 audio_devices_t device) 4986 { 4987 float volume = 1.0; 4988 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 4989 StreamDescriptor &streamDesc = mStreams[stream]; 4990 4991 if (device == AUDIO_DEVICE_NONE) { 4992 device = outputDesc->device(); 4993 } 4994 4995 volume = volIndexToAmpl(device, streamDesc, index); 4996 4997 // if a headset is connected, apply the following rules to ring tones and notifications 4998 // to avoid sound level bursts in user's ears: 4999 // - always attenuate ring tones and notifications volume by 6dB 5000 // - if music is playing, always limit the volume to current music volume, 5001 // with a minimum threshold at -36dB so that notification is always perceived. 5002 const routing_strategy stream_strategy = getStrategy(stream); 5003 if ((device & (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP | 5004 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | 5005 AUDIO_DEVICE_OUT_WIRED_HEADSET | 5006 AUDIO_DEVICE_OUT_WIRED_HEADPHONE)) && 5007 ((stream_strategy == STRATEGY_SONIFICATION) 5008 || (stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL) 5009 || (stream == AUDIO_STREAM_SYSTEM) 5010 || ((stream_strategy == STRATEGY_ENFORCED_AUDIBLE) && 5011 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_NONE))) && 5012 streamDesc.mCanBeMuted) { 5013 volume *= SONIFICATION_HEADSET_VOLUME_FACTOR; 5014 // when the phone is ringing we must consider that music could have been paused just before 5015 // by the music application and behave as if music was active if the last music track was 5016 // just stopped 5017 if (isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY) || 5018 mLimitRingtoneVolume) { 5019 audio_devices_t musicDevice = getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/); 5020 float musicVol = computeVolume(AUDIO_STREAM_MUSIC, 5021 mStreams[AUDIO_STREAM_MUSIC].getVolumeIndex(musicDevice), 5022 output, 5023 musicDevice); 5024 float minVol = (musicVol > SONIFICATION_HEADSET_VOLUME_MIN) ? 5025 musicVol : SONIFICATION_HEADSET_VOLUME_MIN; 5026 if (volume > minVol) { 5027 volume = minVol; 5028 ALOGV("computeVolume limiting volume to %f musicVol %f", minVol, musicVol); 5029 } 5030 } 5031 } 5032 5033 return volume; 5034 } 5035 5036 status_t AudioPolicyManager::checkAndSetVolume(audio_stream_type_t stream, 5037 int index, 5038 audio_io_handle_t output, 5039 audio_devices_t device, 5040 int delayMs, 5041 bool force) 5042 { 5043 5044 // do not change actual stream volume if the stream is muted 5045 if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) { 5046 ALOGVV("checkAndSetVolume() stream %d muted count %d", 5047 stream, mOutputs.valueFor(output)->mMuteCount[stream]); 5048 return NO_ERROR; 5049 } 5050 5051 // do not change in call volume if bluetooth is connected and vice versa 5052 if ((stream == AUDIO_STREAM_VOICE_CALL && 5053 mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] == AUDIO_POLICY_FORCE_BT_SCO) || 5054 (stream == AUDIO_STREAM_BLUETOOTH_SCO && 5055 mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] != AUDIO_POLICY_FORCE_BT_SCO)) { 5056 ALOGV("checkAndSetVolume() cannot set stream %d volume with force use = %d for comm", 5057 stream, mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]); 5058 return INVALID_OPERATION; 5059 } 5060 5061 float volume = computeVolume(stream, index, output, device); 5062 // We actually change the volume if: 5063 // - the float value returned by computeVolume() changed 5064 // - the force flag is set 5065 if (volume != mOutputs.valueFor(output)->mCurVolume[stream] || 5066 force) { 5067 mOutputs.valueFor(output)->mCurVolume[stream] = volume; 5068 ALOGVV("checkAndSetVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs); 5069 // Force VOICE_CALL to track BLUETOOTH_SCO stream volume when bluetooth audio is 5070 // enabled 5071 if (stream == AUDIO_STREAM_BLUETOOTH_SCO) { 5072 mpClientInterface->setStreamVolume(AUDIO_STREAM_VOICE_CALL, volume, output, delayMs); 5073 } 5074 mpClientInterface->setStreamVolume(stream, volume, output, delayMs); 5075 } 5076 5077 if (stream == AUDIO_STREAM_VOICE_CALL || 5078 stream == AUDIO_STREAM_BLUETOOTH_SCO) { 5079 float voiceVolume; 5080 // Force voice volume to max for bluetooth SCO as volume is managed by the headset 5081 if (stream == AUDIO_STREAM_VOICE_CALL) { 5082 voiceVolume = (float)index/(float)mStreams[stream].mIndexMax; 5083 } else { 5084 voiceVolume = 1.0; 5085 } 5086 5087 if (voiceVolume != mLastVoiceVolume && output == mPrimaryOutput) { 5088 mpClientInterface->setVoiceVolume(voiceVolume, delayMs); 5089 mLastVoiceVolume = voiceVolume; 5090 } 5091 } 5092 5093 return NO_ERROR; 5094 } 5095 5096 void AudioPolicyManager::applyStreamVolumes(audio_io_handle_t output, 5097 audio_devices_t device, 5098 int delayMs, 5099 bool force) 5100 { 5101 ALOGVV("applyStreamVolumes() for output %d and device %x", output, device); 5102 5103 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 5104 checkAndSetVolume((audio_stream_type_t)stream, 5105 mStreams[stream].getVolumeIndex(device), 5106 output, 5107 device, 5108 delayMs, 5109 force); 5110 } 5111 } 5112 5113 void AudioPolicyManager::setStrategyMute(routing_strategy strategy, 5114 bool on, 5115 audio_io_handle_t output, 5116 int delayMs, 5117 audio_devices_t device) 5118 { 5119 ALOGVV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output); 5120 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 5121 if (getStrategy((audio_stream_type_t)stream) == strategy) { 5122 setStreamMute((audio_stream_type_t)stream, on, output, delayMs, device); 5123 } 5124 } 5125 } 5126 5127 void AudioPolicyManager::setStreamMute(audio_stream_type_t stream, 5128 bool on, 5129 audio_io_handle_t output, 5130 int delayMs, 5131 audio_devices_t device) 5132 { 5133 StreamDescriptor &streamDesc = mStreams[stream]; 5134 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 5135 if (device == AUDIO_DEVICE_NONE) { 5136 device = outputDesc->device(); 5137 } 5138 5139 ALOGVV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d device %04x", 5140 stream, on, output, outputDesc->mMuteCount[stream], device); 5141 5142 if (on) { 5143 if (outputDesc->mMuteCount[stream] == 0) { 5144 if (streamDesc.mCanBeMuted && 5145 ((stream != AUDIO_STREAM_ENFORCED_AUDIBLE) || 5146 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_NONE))) { 5147 checkAndSetVolume(stream, 0, output, device, delayMs); 5148 } 5149 } 5150 // increment mMuteCount after calling checkAndSetVolume() so that volume change is not ignored 5151 outputDesc->mMuteCount[stream]++; 5152 } else { 5153 if (outputDesc->mMuteCount[stream] == 0) { 5154 ALOGV("setStreamMute() unmuting non muted stream!"); 5155 return; 5156 } 5157 if (--outputDesc->mMuteCount[stream] == 0) { 5158 checkAndSetVolume(stream, 5159 streamDesc.getVolumeIndex(device), 5160 output, 5161 device, 5162 delayMs); 5163 } 5164 } 5165 } 5166 5167 void AudioPolicyManager::handleIncallSonification(audio_stream_type_t stream, 5168 bool starting, bool stateChange) 5169 { 5170 // if the stream pertains to sonification strategy and we are in call we must 5171 // mute the stream if it is low visibility. If it is high visibility, we must play a tone 5172 // in the device used for phone strategy and play the tone if the selected device does not 5173 // interfere with the device used for phone strategy 5174 // if stateChange is true, we are called from setPhoneState() and we must mute or unmute as 5175 // many times as there are active tracks on the output 5176 const routing_strategy stream_strategy = getStrategy(stream); 5177 if ((stream_strategy == STRATEGY_SONIFICATION) || 5178 ((stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL))) { 5179 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(mPrimaryOutput); 5180 ALOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d", 5181 stream, starting, outputDesc->mDevice, stateChange); 5182 if (outputDesc->mRefCount[stream]) { 5183 int muteCount = 1; 5184 if (stateChange) { 5185 muteCount = outputDesc->mRefCount[stream]; 5186 } 5187 if (audio_is_low_visibility(stream)) { 5188 ALOGV("handleIncallSonification() low visibility, muteCount %d", muteCount); 5189 for (int i = 0; i < muteCount; i++) { 5190 setStreamMute(stream, starting, mPrimaryOutput); 5191 } 5192 } else { 5193 ALOGV("handleIncallSonification() high visibility"); 5194 if (outputDesc->device() & 5195 getDeviceForStrategy(STRATEGY_PHONE, true /*fromCache*/)) { 5196 ALOGV("handleIncallSonification() high visibility muted, muteCount %d", muteCount); 5197 for (int i = 0; i < muteCount; i++) { 5198 setStreamMute(stream, starting, mPrimaryOutput); 5199 } 5200 } 5201 if (starting) { 5202 mpClientInterface->startTone(AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION, 5203 AUDIO_STREAM_VOICE_CALL); 5204 } else { 5205 mpClientInterface->stopTone(); 5206 } 5207 } 5208 } 5209 } 5210 } 5211 5212 bool AudioPolicyManager::isInCall() 5213 { 5214 return isStateInCall(mPhoneState); 5215 } 5216 5217 bool AudioPolicyManager::isStateInCall(int state) { 5218 return ((state == AUDIO_MODE_IN_CALL) || 5219 (state == AUDIO_MODE_IN_COMMUNICATION)); 5220 } 5221 5222 uint32_t AudioPolicyManager::getMaxEffectsCpuLoad() 5223 { 5224 return MAX_EFFECTS_CPU_LOAD; 5225 } 5226 5227 uint32_t AudioPolicyManager::getMaxEffectsMemory() 5228 { 5229 return MAX_EFFECTS_MEMORY; 5230 } 5231 5232 5233 // --- AudioOutputDescriptor class implementation 5234 5235 AudioPolicyManager::AudioOutputDescriptor::AudioOutputDescriptor( 5236 const sp<IOProfile>& profile) 5237 : mId(0), mIoHandle(0), mLatency(0), 5238 mFlags((audio_output_flags_t)0), mDevice(AUDIO_DEVICE_NONE), mPatchHandle(0), 5239 mOutput1(0), mOutput2(0), mProfile(profile), mDirectOpenCount(0) 5240 { 5241 // clear usage count for all stream types 5242 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 5243 mRefCount[i] = 0; 5244 mCurVolume[i] = -1.0; 5245 mMuteCount[i] = 0; 5246 mStopTime[i] = 0; 5247 } 5248 for (int i = 0; i < NUM_STRATEGIES; i++) { 5249 mStrategyMutedByDevice[i] = false; 5250 } 5251 if (profile != NULL) { 5252 mFlags = (audio_output_flags_t)profile->mFlags; 5253 mSamplingRate = profile->pickSamplingRate(); 5254 mFormat = profile->pickFormat(); 5255 mChannelMask = profile->pickChannelMask(); 5256 if (profile->mGains.size() > 0) { 5257 profile->mGains[0]->getDefaultConfig(&mGain); 5258 } 5259 } 5260 } 5261 5262 audio_devices_t AudioPolicyManager::AudioOutputDescriptor::device() const 5263 { 5264 if (isDuplicated()) { 5265 return (audio_devices_t)(mOutput1->mDevice | mOutput2->mDevice); 5266 } else { 5267 return mDevice; 5268 } 5269 } 5270 5271 uint32_t AudioPolicyManager::AudioOutputDescriptor::latency() 5272 { 5273 if (isDuplicated()) { 5274 return (mOutput1->mLatency > mOutput2->mLatency) ? mOutput1->mLatency : mOutput2->mLatency; 5275 } else { 5276 return mLatency; 5277 } 5278 } 5279 5280 bool AudioPolicyManager::AudioOutputDescriptor::sharesHwModuleWith( 5281 const sp<AudioOutputDescriptor> outputDesc) 5282 { 5283 if (isDuplicated()) { 5284 return mOutput1->sharesHwModuleWith(outputDesc) || mOutput2->sharesHwModuleWith(outputDesc); 5285 } else if (outputDesc->isDuplicated()){ 5286 return sharesHwModuleWith(outputDesc->mOutput1) || sharesHwModuleWith(outputDesc->mOutput2); 5287 } else { 5288 return (mProfile->mModule == outputDesc->mProfile->mModule); 5289 } 5290 } 5291 5292 void AudioPolicyManager::AudioOutputDescriptor::changeRefCount(audio_stream_type_t stream, 5293 int delta) 5294 { 5295 // forward usage count change to attached outputs 5296 if (isDuplicated()) { 5297 mOutput1->changeRefCount(stream, delta); 5298 mOutput2->changeRefCount(stream, delta); 5299 } 5300 if ((delta + (int)mRefCount[stream]) < 0) { 5301 ALOGW("changeRefCount() invalid delta %d for stream %d, refCount %d", 5302 delta, stream, mRefCount[stream]); 5303 mRefCount[stream] = 0; 5304 return; 5305 } 5306 mRefCount[stream] += delta; 5307 ALOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]); 5308 } 5309 5310 audio_devices_t AudioPolicyManager::AudioOutputDescriptor::supportedDevices() 5311 { 5312 if (isDuplicated()) { 5313 return (audio_devices_t)(mOutput1->supportedDevices() | mOutput2->supportedDevices()); 5314 } else { 5315 return mProfile->mSupportedDevices.types() ; 5316 } 5317 } 5318 5319 bool AudioPolicyManager::AudioOutputDescriptor::isActive(uint32_t inPastMs) const 5320 { 5321 return isStrategyActive(NUM_STRATEGIES, inPastMs); 5322 } 5323 5324 bool AudioPolicyManager::AudioOutputDescriptor::isStrategyActive(routing_strategy strategy, 5325 uint32_t inPastMs, 5326 nsecs_t sysTime) const 5327 { 5328 if ((sysTime == 0) && (inPastMs != 0)) { 5329 sysTime = systemTime(); 5330 } 5331 for (int i = 0; i < (int)AUDIO_STREAM_CNT; i++) { 5332 if (((getStrategy((audio_stream_type_t)i) == strategy) || 5333 (NUM_STRATEGIES == strategy)) && 5334 isStreamActive((audio_stream_type_t)i, inPastMs, sysTime)) { 5335 return true; 5336 } 5337 } 5338 return false; 5339 } 5340 5341 bool AudioPolicyManager::AudioOutputDescriptor::isStreamActive(audio_stream_type_t stream, 5342 uint32_t inPastMs, 5343 nsecs_t sysTime) const 5344 { 5345 if (mRefCount[stream] != 0) { 5346 return true; 5347 } 5348 if (inPastMs == 0) { 5349 return false; 5350 } 5351 if (sysTime == 0) { 5352 sysTime = systemTime(); 5353 } 5354 if (ns2ms(sysTime - mStopTime[stream]) < inPastMs) { 5355 return true; 5356 } 5357 return false; 5358 } 5359 5360 void AudioPolicyManager::AudioOutputDescriptor::toAudioPortConfig( 5361 struct audio_port_config *dstConfig, 5362 const struct audio_port_config *srcConfig) const 5363 { 5364 ALOG_ASSERT(!isDuplicated(), "toAudioPortConfig() called on duplicated output %d", mIoHandle); 5365 5366 dstConfig->config_mask = AUDIO_PORT_CONFIG_SAMPLE_RATE|AUDIO_PORT_CONFIG_CHANNEL_MASK| 5367 AUDIO_PORT_CONFIG_FORMAT|AUDIO_PORT_CONFIG_GAIN; 5368 if (srcConfig != NULL) { 5369 dstConfig->config_mask |= srcConfig->config_mask; 5370 } 5371 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 5372 5373 dstConfig->id = mId; 5374 dstConfig->role = AUDIO_PORT_ROLE_SOURCE; 5375 dstConfig->type = AUDIO_PORT_TYPE_MIX; 5376 dstConfig->ext.mix.hw_module = mProfile->mModule->mHandle; 5377 dstConfig->ext.mix.handle = mIoHandle; 5378 dstConfig->ext.mix.usecase.stream = AUDIO_STREAM_DEFAULT; 5379 } 5380 5381 void AudioPolicyManager::AudioOutputDescriptor::toAudioPort( 5382 struct audio_port *port) const 5383 { 5384 ALOG_ASSERT(!isDuplicated(), "toAudioPort() called on duplicated output %d", mIoHandle); 5385 mProfile->toAudioPort(port); 5386 port->id = mId; 5387 toAudioPortConfig(&port->active_config); 5388 port->ext.mix.hw_module = mProfile->mModule->mHandle; 5389 port->ext.mix.handle = mIoHandle; 5390 port->ext.mix.latency_class = 5391 mFlags & AUDIO_OUTPUT_FLAG_FAST ? AUDIO_LATENCY_LOW : AUDIO_LATENCY_NORMAL; 5392 } 5393 5394 status_t AudioPolicyManager::AudioOutputDescriptor::dump(int fd) 5395 { 5396 const size_t SIZE = 256; 5397 char buffer[SIZE]; 5398 String8 result; 5399 5400 snprintf(buffer, SIZE, " ID: %d\n", mId); 5401 result.append(buffer); 5402 snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); 5403 result.append(buffer); 5404 snprintf(buffer, SIZE, " Format: %08x\n", mFormat); 5405 result.append(buffer); 5406 snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask); 5407 result.append(buffer); 5408 snprintf(buffer, SIZE, " Latency: %d\n", mLatency); 5409 result.append(buffer); 5410 snprintf(buffer, SIZE, " Flags %08x\n", mFlags); 5411 result.append(buffer); 5412 snprintf(buffer, SIZE, " Devices %08x\n", device()); 5413 result.append(buffer); 5414 snprintf(buffer, SIZE, " Stream volume refCount muteCount\n"); 5415 result.append(buffer); 5416 for (int i = 0; i < (int)AUDIO_STREAM_CNT; i++) { 5417 snprintf(buffer, SIZE, " %02d %.03f %02d %02d\n", 5418 i, mCurVolume[i], mRefCount[i], mMuteCount[i]); 5419 result.append(buffer); 5420 } 5421 write(fd, result.string(), result.size()); 5422 5423 return NO_ERROR; 5424 } 5425 5426 // --- AudioInputDescriptor class implementation 5427 5428 AudioPolicyManager::AudioInputDescriptor::AudioInputDescriptor(const sp<IOProfile>& profile) 5429 : mId(0), mIoHandle(0), 5430 mDevice(AUDIO_DEVICE_NONE), mPatchHandle(0), mRefCount(0), 5431 mInputSource(AUDIO_SOURCE_DEFAULT), mProfile(profile), mIsSoundTrigger(false) 5432 { 5433 if (profile != NULL) { 5434 mSamplingRate = profile->pickSamplingRate(); 5435 mFormat = profile->pickFormat(); 5436 mChannelMask = profile->pickChannelMask(); 5437 if (profile->mGains.size() > 0) { 5438 profile->mGains[0]->getDefaultConfig(&mGain); 5439 } 5440 } 5441 } 5442 5443 void AudioPolicyManager::AudioInputDescriptor::toAudioPortConfig( 5444 struct audio_port_config *dstConfig, 5445 const struct audio_port_config *srcConfig) const 5446 { 5447 ALOG_ASSERT(mProfile != 0, 5448 "toAudioPortConfig() called on input with null profile %d", mIoHandle); 5449 dstConfig->config_mask = AUDIO_PORT_CONFIG_SAMPLE_RATE|AUDIO_PORT_CONFIG_CHANNEL_MASK| 5450 AUDIO_PORT_CONFIG_FORMAT|AUDIO_PORT_CONFIG_GAIN; 5451 if (srcConfig != NULL) { 5452 dstConfig->config_mask |= srcConfig->config_mask; 5453 } 5454 5455 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 5456 5457 dstConfig->id = mId; 5458 dstConfig->role = AUDIO_PORT_ROLE_SINK; 5459 dstConfig->type = AUDIO_PORT_TYPE_MIX; 5460 dstConfig->ext.mix.hw_module = mProfile->mModule->mHandle; 5461 dstConfig->ext.mix.handle = mIoHandle; 5462 dstConfig->ext.mix.usecase.source = mInputSource; 5463 } 5464 5465 void AudioPolicyManager::AudioInputDescriptor::toAudioPort( 5466 struct audio_port *port) const 5467 { 5468 ALOG_ASSERT(mProfile != 0, "toAudioPort() called on input with null profile %d", mIoHandle); 5469 5470 mProfile->toAudioPort(port); 5471 port->id = mId; 5472 toAudioPortConfig(&port->active_config); 5473 port->ext.mix.hw_module = mProfile->mModule->mHandle; 5474 port->ext.mix.handle = mIoHandle; 5475 port->ext.mix.latency_class = AUDIO_LATENCY_NORMAL; 5476 } 5477 5478 status_t AudioPolicyManager::AudioInputDescriptor::dump(int fd) 5479 { 5480 const size_t SIZE = 256; 5481 char buffer[SIZE]; 5482 String8 result; 5483 5484 snprintf(buffer, SIZE, " ID: %d\n", mId); 5485 result.append(buffer); 5486 snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); 5487 result.append(buffer); 5488 snprintf(buffer, SIZE, " Format: %d\n", mFormat); 5489 result.append(buffer); 5490 snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask); 5491 result.append(buffer); 5492 snprintf(buffer, SIZE, " Devices %08x\n", mDevice); 5493 result.append(buffer); 5494 snprintf(buffer, SIZE, " Ref Count %d\n", mRefCount); 5495 result.append(buffer); 5496 snprintf(buffer, SIZE, " Open Ref Count %d\n", mOpenRefCount); 5497 result.append(buffer); 5498 5499 write(fd, result.string(), result.size()); 5500 5501 return NO_ERROR; 5502 } 5503 5504 // --- StreamDescriptor class implementation 5505 5506 AudioPolicyManager::StreamDescriptor::StreamDescriptor() 5507 : mIndexMin(0), mIndexMax(1), mCanBeMuted(true) 5508 { 5509 mIndexCur.add(AUDIO_DEVICE_OUT_DEFAULT, 0); 5510 } 5511 5512 int AudioPolicyManager::StreamDescriptor::getVolumeIndex(audio_devices_t device) 5513 { 5514 device = AudioPolicyManager::getDeviceForVolume(device); 5515 // there is always a valid entry for AUDIO_DEVICE_OUT_DEFAULT 5516 if (mIndexCur.indexOfKey(device) < 0) { 5517 device = AUDIO_DEVICE_OUT_DEFAULT; 5518 } 5519 return mIndexCur.valueFor(device); 5520 } 5521 5522 void AudioPolicyManager::StreamDescriptor::dump(int fd) 5523 { 5524 const size_t SIZE = 256; 5525 char buffer[SIZE]; 5526 String8 result; 5527 5528 snprintf(buffer, SIZE, "%s %02d %02d ", 5529 mCanBeMuted ? "true " : "false", mIndexMin, mIndexMax); 5530 result.append(buffer); 5531 for (size_t i = 0; i < mIndexCur.size(); i++) { 5532 snprintf(buffer, SIZE, "%04x : %02d, ", 5533 mIndexCur.keyAt(i), 5534 mIndexCur.valueAt(i)); 5535 result.append(buffer); 5536 } 5537 result.append("\n"); 5538 5539 write(fd, result.string(), result.size()); 5540 } 5541 5542 // --- EffectDescriptor class implementation 5543 5544 status_t AudioPolicyManager::EffectDescriptor::dump(int fd) 5545 { 5546 const size_t SIZE = 256; 5547 char buffer[SIZE]; 5548 String8 result; 5549 5550 snprintf(buffer, SIZE, " I/O: %d\n", mIo); 5551 result.append(buffer); 5552 snprintf(buffer, SIZE, " Strategy: %d\n", mStrategy); 5553 result.append(buffer); 5554 snprintf(buffer, SIZE, " Session: %d\n", mSession); 5555 result.append(buffer); 5556 snprintf(buffer, SIZE, " Name: %s\n", mDesc.name); 5557 result.append(buffer); 5558 snprintf(buffer, SIZE, " %s\n", mEnabled ? "Enabled" : "Disabled"); 5559 result.append(buffer); 5560 write(fd, result.string(), result.size()); 5561 5562 return NO_ERROR; 5563 } 5564 5565 // --- HwModule class implementation 5566 5567 AudioPolicyManager::HwModule::HwModule(const char *name) 5568 : mName(strndup(name, AUDIO_HARDWARE_MODULE_ID_MAX_LEN)), 5569 mHalVersion(AUDIO_DEVICE_API_VERSION_MIN), mHandle(0) 5570 { 5571 } 5572 5573 AudioPolicyManager::HwModule::~HwModule() 5574 { 5575 for (size_t i = 0; i < mOutputProfiles.size(); i++) { 5576 mOutputProfiles[i]->mSupportedDevices.clear(); 5577 } 5578 for (size_t i = 0; i < mInputProfiles.size(); i++) { 5579 mInputProfiles[i]->mSupportedDevices.clear(); 5580 } 5581 free((void *)mName); 5582 } 5583 5584 status_t AudioPolicyManager::HwModule::loadInput(cnode *root) 5585 { 5586 cnode *node = root->first_child; 5587 5588 sp<IOProfile> profile = new IOProfile(String8(root->name), AUDIO_PORT_ROLE_SINK, this); 5589 5590 while (node) { 5591 if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) { 5592 profile->loadSamplingRates((char *)node->value); 5593 } else if (strcmp(node->name, FORMATS_TAG) == 0) { 5594 profile->loadFormats((char *)node->value); 5595 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 5596 profile->loadInChannels((char *)node->value); 5597 } else if (strcmp(node->name, DEVICES_TAG) == 0) { 5598 profile->mSupportedDevices.loadDevicesFromName((char *)node->value, 5599 mDeclaredDevices); 5600 } else if (strcmp(node->name, FLAGS_TAG) == 0) { 5601 profile->mFlags = parseInputFlagNames((char *)node->value); 5602 } else if (strcmp(node->name, GAINS_TAG) == 0) { 5603 profile->loadGains(node); 5604 } 5605 node = node->next; 5606 } 5607 ALOGW_IF(profile->mSupportedDevices.isEmpty(), 5608 "loadInput() invalid supported devices"); 5609 ALOGW_IF(profile->mChannelMasks.size() == 0, 5610 "loadInput() invalid supported channel masks"); 5611 ALOGW_IF(profile->mSamplingRates.size() == 0, 5612 "loadInput() invalid supported sampling rates"); 5613 ALOGW_IF(profile->mFormats.size() == 0, 5614 "loadInput() invalid supported formats"); 5615 if (!profile->mSupportedDevices.isEmpty() && 5616 (profile->mChannelMasks.size() != 0) && 5617 (profile->mSamplingRates.size() != 0) && 5618 (profile->mFormats.size() != 0)) { 5619 5620 ALOGV("loadInput() adding input Supported Devices %04x", 5621 profile->mSupportedDevices.types()); 5622 5623 mInputProfiles.add(profile); 5624 return NO_ERROR; 5625 } else { 5626 return BAD_VALUE; 5627 } 5628 } 5629 5630 status_t AudioPolicyManager::HwModule::loadOutput(cnode *root) 5631 { 5632 cnode *node = root->first_child; 5633 5634 sp<IOProfile> profile = new IOProfile(String8(root->name), AUDIO_PORT_ROLE_SOURCE, this); 5635 5636 while (node) { 5637 if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) { 5638 profile->loadSamplingRates((char *)node->value); 5639 } else if (strcmp(node->name, FORMATS_TAG) == 0) { 5640 profile->loadFormats((char *)node->value); 5641 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 5642 profile->loadOutChannels((char *)node->value); 5643 } else if (strcmp(node->name, DEVICES_TAG) == 0) { 5644 profile->mSupportedDevices.loadDevicesFromName((char *)node->value, 5645 mDeclaredDevices); 5646 } else if (strcmp(node->name, FLAGS_TAG) == 0) { 5647 profile->mFlags = parseOutputFlagNames((char *)node->value); 5648 } else if (strcmp(node->name, GAINS_TAG) == 0) { 5649 profile->loadGains(node); 5650 } 5651 node = node->next; 5652 } 5653 ALOGW_IF(profile->mSupportedDevices.isEmpty(), 5654 "loadOutput() invalid supported devices"); 5655 ALOGW_IF(profile->mChannelMasks.size() == 0, 5656 "loadOutput() invalid supported channel masks"); 5657 ALOGW_IF(profile->mSamplingRates.size() == 0, 5658 "loadOutput() invalid supported sampling rates"); 5659 ALOGW_IF(profile->mFormats.size() == 0, 5660 "loadOutput() invalid supported formats"); 5661 if (!profile->mSupportedDevices.isEmpty() && 5662 (profile->mChannelMasks.size() != 0) && 5663 (profile->mSamplingRates.size() != 0) && 5664 (profile->mFormats.size() != 0)) { 5665 5666 ALOGV("loadOutput() adding output Supported Devices %04x, mFlags %04x", 5667 profile->mSupportedDevices.types(), profile->mFlags); 5668 5669 mOutputProfiles.add(profile); 5670 return NO_ERROR; 5671 } else { 5672 return BAD_VALUE; 5673 } 5674 } 5675 5676 status_t AudioPolicyManager::HwModule::loadDevice(cnode *root) 5677 { 5678 cnode *node = root->first_child; 5679 5680 audio_devices_t type = AUDIO_DEVICE_NONE; 5681 while (node) { 5682 if (strcmp(node->name, DEVICE_TYPE) == 0) { 5683 type = parseDeviceNames((char *)node->value); 5684 break; 5685 } 5686 node = node->next; 5687 } 5688 if (type == AUDIO_DEVICE_NONE || 5689 (!audio_is_input_device(type) && !audio_is_output_device(type))) { 5690 ALOGW("loadDevice() bad type %08x", type); 5691 return BAD_VALUE; 5692 } 5693 sp<DeviceDescriptor> deviceDesc = new DeviceDescriptor(String8(root->name), type); 5694 deviceDesc->mModule = this; 5695 5696 node = root->first_child; 5697 while (node) { 5698 if (strcmp(node->name, DEVICE_ADDRESS) == 0) { 5699 deviceDesc->mAddress = String8((char *)node->value); 5700 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 5701 if (audio_is_input_device(type)) { 5702 deviceDesc->loadInChannels((char *)node->value); 5703 } else { 5704 deviceDesc->loadOutChannels((char *)node->value); 5705 } 5706 } else if (strcmp(node->name, GAINS_TAG) == 0) { 5707 deviceDesc->loadGains(node); 5708 } 5709 node = node->next; 5710 } 5711 5712 ALOGV("loadDevice() adding device name %s type %08x address %s", 5713 deviceDesc->mName.string(), type, deviceDesc->mAddress.string()); 5714 5715 mDeclaredDevices.add(deviceDesc); 5716 5717 return NO_ERROR; 5718 } 5719 5720 void AudioPolicyManager::HwModule::dump(int fd) 5721 { 5722 const size_t SIZE = 256; 5723 char buffer[SIZE]; 5724 String8 result; 5725 5726 snprintf(buffer, SIZE, " - name: %s\n", mName); 5727 result.append(buffer); 5728 snprintf(buffer, SIZE, " - handle: %d\n", mHandle); 5729 result.append(buffer); 5730 snprintf(buffer, SIZE, " - version: %u.%u\n", mHalVersion >> 8, mHalVersion & 0xFF); 5731 result.append(buffer); 5732 write(fd, result.string(), result.size()); 5733 if (mOutputProfiles.size()) { 5734 write(fd, " - outputs:\n", strlen(" - outputs:\n")); 5735 for (size_t i = 0; i < mOutputProfiles.size(); i++) { 5736 snprintf(buffer, SIZE, " output %zu:\n", i); 5737 write(fd, buffer, strlen(buffer)); 5738 mOutputProfiles[i]->dump(fd); 5739 } 5740 } 5741 if (mInputProfiles.size()) { 5742 write(fd, " - inputs:\n", strlen(" - inputs:\n")); 5743 for (size_t i = 0; i < mInputProfiles.size(); i++) { 5744 snprintf(buffer, SIZE, " input %zu:\n", i); 5745 write(fd, buffer, strlen(buffer)); 5746 mInputProfiles[i]->dump(fd); 5747 } 5748 } 5749 if (mDeclaredDevices.size()) { 5750 write(fd, " - devices:\n", strlen(" - devices:\n")); 5751 for (size_t i = 0; i < mDeclaredDevices.size(); i++) { 5752 mDeclaredDevices[i]->dump(fd, 4, i); 5753 } 5754 } 5755 } 5756 5757 // --- AudioPort class implementation 5758 5759 5760 AudioPolicyManager::AudioPort::AudioPort(const String8& name, audio_port_type_t type, 5761 audio_port_role_t role, const sp<HwModule>& module) : 5762 mName(name), mType(type), mRole(role), mModule(module), mFlags(0) 5763 { 5764 mUseInChannelMask = ((type == AUDIO_PORT_TYPE_DEVICE) && (role == AUDIO_PORT_ROLE_SOURCE)) || 5765 ((type == AUDIO_PORT_TYPE_MIX) && (role == AUDIO_PORT_ROLE_SINK)); 5766 } 5767 5768 void AudioPolicyManager::AudioPort::toAudioPort(struct audio_port *port) const 5769 { 5770 port->role = mRole; 5771 port->type = mType; 5772 unsigned int i; 5773 for (i = 0; i < mSamplingRates.size() && i < AUDIO_PORT_MAX_SAMPLING_RATES; i++) { 5774 if (mSamplingRates[i] != 0) { 5775 port->sample_rates[i] = mSamplingRates[i]; 5776 } 5777 } 5778 port->num_sample_rates = i; 5779 for (i = 0; i < mChannelMasks.size() && i < AUDIO_PORT_MAX_CHANNEL_MASKS; i++) { 5780 if (mChannelMasks[i] != 0) { 5781 port->channel_masks[i] = mChannelMasks[i]; 5782 } 5783 } 5784 port->num_channel_masks = i; 5785 for (i = 0; i < mFormats.size() && i < AUDIO_PORT_MAX_FORMATS; i++) { 5786 if (mFormats[i] != 0) { 5787 port->formats[i] = mFormats[i]; 5788 } 5789 } 5790 port->num_formats = i; 5791 5792 ALOGV("AudioPort::toAudioPort() num gains %zu", mGains.size()); 5793 5794 for (i = 0; i < mGains.size() && i < AUDIO_PORT_MAX_GAINS; i++) { 5795 port->gains[i] = mGains[i]->mGain; 5796 } 5797 port->num_gains = i; 5798 } 5799 5800 void AudioPolicyManager::AudioPort::importAudioPort(const sp<AudioPort> port) { 5801 for (size_t k = 0 ; k < port->mSamplingRates.size() ; k++) { 5802 const uint32_t rate = port->mSamplingRates.itemAt(k); 5803 if (rate != 0) { // skip "dynamic" rates 5804 bool hasRate = false; 5805 for (size_t l = 0 ; l < mSamplingRates.size() ; l++) { 5806 if (rate == mSamplingRates.itemAt(l)) { 5807 hasRate = true; 5808 break; 5809 } 5810 } 5811 if (!hasRate) { // never import a sampling rate twice 5812 mSamplingRates.add(rate); 5813 } 5814 } 5815 } 5816 for (size_t k = 0 ; k < port->mChannelMasks.size() ; k++) { 5817 const audio_channel_mask_t mask = port->mChannelMasks.itemAt(k); 5818 if (mask != 0) { // skip "dynamic" masks 5819 bool hasMask = false; 5820 for (size_t l = 0 ; l < mChannelMasks.size() ; l++) { 5821 if (mask == mChannelMasks.itemAt(l)) { 5822 hasMask = true; 5823 break; 5824 } 5825 } 5826 if (!hasMask) { // never import a channel mask twice 5827 mChannelMasks.add(mask); 5828 } 5829 } 5830 } 5831 for (size_t k = 0 ; k < port->mFormats.size() ; k++) { 5832 const audio_format_t format = port->mFormats.itemAt(k); 5833 if (format != 0) { // skip "dynamic" formats 5834 bool hasFormat = false; 5835 for (size_t l = 0 ; l < mFormats.size() ; l++) { 5836 if (format == mFormats.itemAt(l)) { 5837 hasFormat = true; 5838 break; 5839 } 5840 } 5841 if (!hasFormat) { // never import a channel mask twice 5842 mFormats.add(format); 5843 } 5844 } 5845 } 5846 } 5847 5848 void AudioPolicyManager::AudioPort::clearCapabilities() { 5849 mChannelMasks.clear(); 5850 mFormats.clear(); 5851 mSamplingRates.clear(); 5852 } 5853 5854 void AudioPolicyManager::AudioPort::loadSamplingRates(char *name) 5855 { 5856 char *str = strtok(name, "|"); 5857 5858 // by convention, "0' in the first entry in mSamplingRates indicates the supported sampling 5859 // rates should be read from the output stream after it is opened for the first time 5860 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5861 mSamplingRates.add(0); 5862 return; 5863 } 5864 5865 while (str != NULL) { 5866 uint32_t rate = atoi(str); 5867 if (rate != 0) { 5868 ALOGV("loadSamplingRates() adding rate %d", rate); 5869 mSamplingRates.add(rate); 5870 } 5871 str = strtok(NULL, "|"); 5872 } 5873 } 5874 5875 void AudioPolicyManager::AudioPort::loadFormats(char *name) 5876 { 5877 char *str = strtok(name, "|"); 5878 5879 // by convention, "0' in the first entry in mFormats indicates the supported formats 5880 // should be read from the output stream after it is opened for the first time 5881 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5882 mFormats.add(AUDIO_FORMAT_DEFAULT); 5883 return; 5884 } 5885 5886 while (str != NULL) { 5887 audio_format_t format = (audio_format_t)stringToEnum(sFormatNameToEnumTable, 5888 ARRAY_SIZE(sFormatNameToEnumTable), 5889 str); 5890 if (format != AUDIO_FORMAT_DEFAULT) { 5891 mFormats.add(format); 5892 } 5893 str = strtok(NULL, "|"); 5894 } 5895 } 5896 5897 void AudioPolicyManager::AudioPort::loadInChannels(char *name) 5898 { 5899 const char *str = strtok(name, "|"); 5900 5901 ALOGV("loadInChannels() %s", name); 5902 5903 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5904 mChannelMasks.add(0); 5905 return; 5906 } 5907 5908 while (str != NULL) { 5909 audio_channel_mask_t channelMask = 5910 (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable, 5911 ARRAY_SIZE(sInChannelsNameToEnumTable), 5912 str); 5913 if (channelMask != 0) { 5914 ALOGV("loadInChannels() adding channelMask %04x", channelMask); 5915 mChannelMasks.add(channelMask); 5916 } 5917 str = strtok(NULL, "|"); 5918 } 5919 } 5920 5921 void AudioPolicyManager::AudioPort::loadOutChannels(char *name) 5922 { 5923 const char *str = strtok(name, "|"); 5924 5925 ALOGV("loadOutChannels() %s", name); 5926 5927 // by convention, "0' in the first entry in mChannelMasks indicates the supported channel 5928 // masks should be read from the output stream after it is opened for the first time 5929 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5930 mChannelMasks.add(0); 5931 return; 5932 } 5933 5934 while (str != NULL) { 5935 audio_channel_mask_t channelMask = 5936 (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable, 5937 ARRAY_SIZE(sOutChannelsNameToEnumTable), 5938 str); 5939 if (channelMask != 0) { 5940 mChannelMasks.add(channelMask); 5941 } 5942 str = strtok(NULL, "|"); 5943 } 5944 return; 5945 } 5946 5947 audio_gain_mode_t AudioPolicyManager::AudioPort::loadGainMode(char *name) 5948 { 5949 const char *str = strtok(name, "|"); 5950 5951 ALOGV("loadGainMode() %s", name); 5952 audio_gain_mode_t mode = 0; 5953 while (str != NULL) { 5954 mode |= (audio_gain_mode_t)stringToEnum(sGainModeNameToEnumTable, 5955 ARRAY_SIZE(sGainModeNameToEnumTable), 5956 str); 5957 str = strtok(NULL, "|"); 5958 } 5959 return mode; 5960 } 5961 5962 void AudioPolicyManager::AudioPort::loadGain(cnode *root, int index) 5963 { 5964 cnode *node = root->first_child; 5965 5966 sp<AudioGain> gain = new AudioGain(index, mUseInChannelMask); 5967 5968 while (node) { 5969 if (strcmp(node->name, GAIN_MODE) == 0) { 5970 gain->mGain.mode = loadGainMode((char *)node->value); 5971 } else if (strcmp(node->name, GAIN_CHANNELS) == 0) { 5972 if (mUseInChannelMask) { 5973 gain->mGain.channel_mask = 5974 (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable, 5975 ARRAY_SIZE(sInChannelsNameToEnumTable), 5976 (char *)node->value); 5977 } else { 5978 gain->mGain.channel_mask = 5979 (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable, 5980 ARRAY_SIZE(sOutChannelsNameToEnumTable), 5981 (char *)node->value); 5982 } 5983 } else if (strcmp(node->name, GAIN_MIN_VALUE) == 0) { 5984 gain->mGain.min_value = atoi((char *)node->value); 5985 } else if (strcmp(node->name, GAIN_MAX_VALUE) == 0) { 5986 gain->mGain.max_value = atoi((char *)node->value); 5987 } else if (strcmp(node->name, GAIN_DEFAULT_VALUE) == 0) { 5988 gain->mGain.default_value = atoi((char *)node->value); 5989 } else if (strcmp(node->name, GAIN_STEP_VALUE) == 0) { 5990 gain->mGain.step_value = atoi((char *)node->value); 5991 } else if (strcmp(node->name, GAIN_MIN_RAMP_MS) == 0) { 5992 gain->mGain.min_ramp_ms = atoi((char *)node->value); 5993 } else if (strcmp(node->name, GAIN_MAX_RAMP_MS) == 0) { 5994 gain->mGain.max_ramp_ms = atoi((char *)node->value); 5995 } 5996 node = node->next; 5997 } 5998 5999 ALOGV("loadGain() adding new gain mode %08x channel mask %08x min mB %d max mB %d", 6000 gain->mGain.mode, gain->mGain.channel_mask, gain->mGain.min_value, gain->mGain.max_value); 6001 6002 if (gain->mGain.mode == 0) { 6003 return; 6004 } 6005 mGains.add(gain); 6006 } 6007 6008 void AudioPolicyManager::AudioPort::loadGains(cnode *root) 6009 { 6010 cnode *node = root->first_child; 6011 int index = 0; 6012 while (node) { 6013 ALOGV("loadGains() loading gain %s", node->name); 6014 loadGain(node, index++); 6015 node = node->next; 6016 } 6017 } 6018 6019 status_t AudioPolicyManager::AudioPort::checkExactSamplingRate(uint32_t samplingRate) const 6020 { 6021 for (size_t i = 0; i < mSamplingRates.size(); i ++) { 6022 if (mSamplingRates[i] == samplingRate) { 6023 return NO_ERROR; 6024 } 6025 } 6026 return BAD_VALUE; 6027 } 6028 6029 status_t AudioPolicyManager::AudioPort::checkCompatibleSamplingRate(uint32_t samplingRate, 6030 uint32_t *updatedSamplingRate) const 6031 { 6032 // Search for the closest supported sampling rate that is above (preferred) 6033 // or below (acceptable) the desired sampling rate, within a permitted ratio. 6034 // The sampling rates do not need to be sorted in ascending order. 6035 ssize_t maxBelow = -1; 6036 ssize_t minAbove = -1; 6037 uint32_t candidate; 6038 for (size_t i = 0; i < mSamplingRates.size(); i++) { 6039 candidate = mSamplingRates[i]; 6040 if (candidate == samplingRate) { 6041 if (updatedSamplingRate != NULL) { 6042 *updatedSamplingRate = candidate; 6043 } 6044 return NO_ERROR; 6045 } 6046 // candidate < desired 6047 if (candidate < samplingRate) { 6048 if (maxBelow < 0 || candidate > mSamplingRates[maxBelow]) { 6049 maxBelow = i; 6050 } 6051 // candidate > desired 6052 } else { 6053 if (minAbove < 0 || candidate < mSamplingRates[minAbove]) { 6054 minAbove = i; 6055 } 6056 } 6057 } 6058 // This uses hard-coded knowledge about AudioFlinger resampling ratios. 6059 // TODO Move these assumptions out. 6060 static const uint32_t kMaxDownSampleRatio = 6; // beyond this aliasing occurs 6061 static const uint32_t kMaxUpSampleRatio = 256; // beyond this sample rate inaccuracies occur 6062 // due to approximation by an int32_t of the 6063 // phase increments 6064 // Prefer to down-sample from a higher sampling rate, as we get the desired frequency spectrum. 6065 if (minAbove >= 0) { 6066 candidate = mSamplingRates[minAbove]; 6067 if (candidate / kMaxDownSampleRatio <= samplingRate) { 6068 if (updatedSamplingRate != NULL) { 6069 *updatedSamplingRate = candidate; 6070 } 6071 return NO_ERROR; 6072 } 6073 } 6074 // But if we have to up-sample from a lower sampling rate, that's OK. 6075 if (maxBelow >= 0) { 6076 candidate = mSamplingRates[maxBelow]; 6077 if (candidate * kMaxUpSampleRatio >= samplingRate) { 6078 if (updatedSamplingRate != NULL) { 6079 *updatedSamplingRate = candidate; 6080 } 6081 return NO_ERROR; 6082 } 6083 } 6084 // leave updatedSamplingRate unmodified 6085 return BAD_VALUE; 6086 } 6087 6088 status_t AudioPolicyManager::AudioPort::checkExactChannelMask(audio_channel_mask_t channelMask) const 6089 { 6090 for (size_t i = 0; i < mChannelMasks.size(); i++) { 6091 if (mChannelMasks[i] == channelMask) { 6092 return NO_ERROR; 6093 } 6094 } 6095 return BAD_VALUE; 6096 } 6097 6098 status_t AudioPolicyManager::AudioPort::checkCompatibleChannelMask(audio_channel_mask_t channelMask) 6099 const 6100 { 6101 const bool isRecordThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SINK; 6102 for (size_t i = 0; i < mChannelMasks.size(); i ++) { 6103 // FIXME Does not handle multi-channel automatic conversions yet 6104 audio_channel_mask_t supported = mChannelMasks[i]; 6105 if (supported == channelMask) { 6106 return NO_ERROR; 6107 } 6108 if (isRecordThread) { 6109 // This uses hard-coded knowledge that AudioFlinger can silently down-mix and up-mix. 6110 // FIXME Abstract this out to a table. 6111 if (((supported == AUDIO_CHANNEL_IN_FRONT_BACK || supported == AUDIO_CHANNEL_IN_STEREO) 6112 && channelMask == AUDIO_CHANNEL_IN_MONO) || 6113 (supported == AUDIO_CHANNEL_IN_MONO && (channelMask == AUDIO_CHANNEL_IN_FRONT_BACK 6114 || channelMask == AUDIO_CHANNEL_IN_STEREO))) { 6115 return NO_ERROR; 6116 } 6117 } 6118 } 6119 return BAD_VALUE; 6120 } 6121 6122 status_t AudioPolicyManager::AudioPort::checkFormat(audio_format_t format) const 6123 { 6124 for (size_t i = 0; i < mFormats.size(); i ++) { 6125 if (mFormats[i] == format) { 6126 return NO_ERROR; 6127 } 6128 } 6129 return BAD_VALUE; 6130 } 6131 6132 6133 uint32_t AudioPolicyManager::AudioPort::pickSamplingRate() const 6134 { 6135 // special case for uninitialized dynamic profile 6136 if (mSamplingRates.size() == 1 && mSamplingRates[0] == 0) { 6137 return 0; 6138 } 6139 6140 // For direct outputs, pick minimum sampling rate: this helps ensuring that the 6141 // channel count / sampling rate combination chosen will be supported by the connected 6142 // sink 6143 if ((mType == AUDIO_PORT_TYPE_MIX) && (mRole == AUDIO_PORT_ROLE_SOURCE) && 6144 (mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD))) { 6145 uint32_t samplingRate = UINT_MAX; 6146 for (size_t i = 0; i < mSamplingRates.size(); i ++) { 6147 if ((mSamplingRates[i] < samplingRate) && (mSamplingRates[i] > 0)) { 6148 samplingRate = mSamplingRates[i]; 6149 } 6150 } 6151 return (samplingRate == UINT_MAX) ? 0 : samplingRate; 6152 } 6153 6154 uint32_t samplingRate = 0; 6155 uint32_t maxRate = MAX_MIXER_SAMPLING_RATE; 6156 6157 // For mixed output and inputs, use max mixer sampling rates. Do not 6158 // limit sampling rate otherwise 6159 if (mType != AUDIO_PORT_TYPE_MIX) { 6160 maxRate = UINT_MAX; 6161 } 6162 for (size_t i = 0; i < mSamplingRates.size(); i ++) { 6163 if ((mSamplingRates[i] > samplingRate) && (mSamplingRates[i] <= maxRate)) { 6164 samplingRate = mSamplingRates[i]; 6165 } 6166 } 6167 return samplingRate; 6168 } 6169 6170 audio_channel_mask_t AudioPolicyManager::AudioPort::pickChannelMask() const 6171 { 6172 // special case for uninitialized dynamic profile 6173 if (mChannelMasks.size() == 1 && mChannelMasks[0] == 0) { 6174 return AUDIO_CHANNEL_NONE; 6175 } 6176 audio_channel_mask_t channelMask = AUDIO_CHANNEL_NONE; 6177 6178 // For direct outputs, pick minimum channel count: this helps ensuring that the 6179 // channel count / sampling rate combination chosen will be supported by the connected 6180 // sink 6181 if ((mType == AUDIO_PORT_TYPE_MIX) && (mRole == AUDIO_PORT_ROLE_SOURCE) && 6182 (mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD))) { 6183 uint32_t channelCount = UINT_MAX; 6184 for (size_t i = 0; i < mChannelMasks.size(); i ++) { 6185 uint32_t cnlCount; 6186 if (mUseInChannelMask) { 6187 cnlCount = audio_channel_count_from_in_mask(mChannelMasks[i]); 6188 } else { 6189 cnlCount = audio_channel_count_from_out_mask(mChannelMasks[i]); 6190 } 6191 if ((cnlCount < channelCount) && (cnlCount > 0)) { 6192 channelMask = mChannelMasks[i]; 6193 channelCount = cnlCount; 6194 } 6195 } 6196 return channelMask; 6197 } 6198 6199 uint32_t channelCount = 0; 6200 uint32_t maxCount = MAX_MIXER_CHANNEL_COUNT; 6201 6202 // For mixed output and inputs, use max mixer channel count. Do not 6203 // limit channel count otherwise 6204 if (mType != AUDIO_PORT_TYPE_MIX) { 6205 maxCount = UINT_MAX; 6206 } 6207 for (size_t i = 0; i < mChannelMasks.size(); i ++) { 6208 uint32_t cnlCount; 6209 if (mUseInChannelMask) { 6210 cnlCount = audio_channel_count_from_in_mask(mChannelMasks[i]); 6211 } else { 6212 cnlCount = audio_channel_count_from_out_mask(mChannelMasks[i]); 6213 } 6214 if ((cnlCount > channelCount) && (cnlCount <= maxCount)) { 6215 channelMask = mChannelMasks[i]; 6216 channelCount = cnlCount; 6217 } 6218 } 6219 return channelMask; 6220 } 6221 6222 /* format in order of increasing preference */ 6223 const audio_format_t AudioPolicyManager::AudioPort::sPcmFormatCompareTable[] = { 6224 AUDIO_FORMAT_DEFAULT, 6225 AUDIO_FORMAT_PCM_16_BIT, 6226 AUDIO_FORMAT_PCM_8_24_BIT, 6227 AUDIO_FORMAT_PCM_24_BIT_PACKED, 6228 AUDIO_FORMAT_PCM_32_BIT, 6229 AUDIO_FORMAT_PCM_FLOAT, 6230 }; 6231 6232 int AudioPolicyManager::AudioPort::compareFormats(audio_format_t format1, 6233 audio_format_t format2) 6234 { 6235 // NOTE: AUDIO_FORMAT_INVALID is also considered not PCM and will be compared equal to any 6236 // compressed format and better than any PCM format. This is by design of pickFormat() 6237 if (!audio_is_linear_pcm(format1)) { 6238 if (!audio_is_linear_pcm(format2)) { 6239 return 0; 6240 } 6241 return 1; 6242 } 6243 if (!audio_is_linear_pcm(format2)) { 6244 return -1; 6245 } 6246 6247 int index1 = -1, index2 = -1; 6248 for (size_t i = 0; 6249 (i < ARRAY_SIZE(sPcmFormatCompareTable)) && ((index1 == -1) || (index2 == -1)); 6250 i ++) { 6251 if (sPcmFormatCompareTable[i] == format1) { 6252 index1 = i; 6253 } 6254 if (sPcmFormatCompareTable[i] == format2) { 6255 index2 = i; 6256 } 6257 } 6258 // format1 not found => index1 < 0 => format2 > format1 6259 // format2 not found => index2 < 0 => format2 < format1 6260 return index1 - index2; 6261 } 6262 6263 audio_format_t AudioPolicyManager::AudioPort::pickFormat() const 6264 { 6265 // special case for uninitialized dynamic profile 6266 if (mFormats.size() == 1 && mFormats[0] == 0) { 6267 return AUDIO_FORMAT_DEFAULT; 6268 } 6269 6270 audio_format_t format = AUDIO_FORMAT_DEFAULT; 6271 audio_format_t bestFormat = 6272 AudioPolicyManager::AudioPort::sPcmFormatCompareTable[ 6273 ARRAY_SIZE(AudioPolicyManager::AudioPort::sPcmFormatCompareTable) - 1]; 6274 // For mixed output and inputs, use best mixer output format. Do not 6275 // limit format otherwise 6276 if ((mType != AUDIO_PORT_TYPE_MIX) || 6277 ((mRole == AUDIO_PORT_ROLE_SOURCE) && 6278 (((mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)) != 0)))) { 6279 bestFormat = AUDIO_FORMAT_INVALID; 6280 } 6281 6282 for (size_t i = 0; i < mFormats.size(); i ++) { 6283 if ((compareFormats(mFormats[i], format) > 0) && 6284 (compareFormats(mFormats[i], bestFormat) <= 0)) { 6285 format = mFormats[i]; 6286 } 6287 } 6288 return format; 6289 } 6290 6291 status_t AudioPolicyManager::AudioPort::checkGain(const struct audio_gain_config *gainConfig, 6292 int index) const 6293 { 6294 if (index < 0 || (size_t)index >= mGains.size()) { 6295 return BAD_VALUE; 6296 } 6297 return mGains[index]->checkConfig(gainConfig); 6298 } 6299 6300 void AudioPolicyManager::AudioPort::dump(int fd, int spaces) const 6301 { 6302 const size_t SIZE = 256; 6303 char buffer[SIZE]; 6304 String8 result; 6305 6306 if (mName.size() != 0) { 6307 snprintf(buffer, SIZE, "%*s- name: %s\n", spaces, "", mName.string()); 6308 result.append(buffer); 6309 } 6310 6311 if (mSamplingRates.size() != 0) { 6312 snprintf(buffer, SIZE, "%*s- sampling rates: ", spaces, ""); 6313 result.append(buffer); 6314 for (size_t i = 0; i < mSamplingRates.size(); i++) { 6315 if (i == 0 && mSamplingRates[i] == 0) { 6316 snprintf(buffer, SIZE, "Dynamic"); 6317 } else { 6318 snprintf(buffer, SIZE, "%d", mSamplingRates[i]); 6319 } 6320 result.append(buffer); 6321 result.append(i == (mSamplingRates.size() - 1) ? "" : ", "); 6322 } 6323 result.append("\n"); 6324 } 6325 6326 if (mChannelMasks.size() != 0) { 6327 snprintf(buffer, SIZE, "%*s- channel masks: ", spaces, ""); 6328 result.append(buffer); 6329 for (size_t i = 0; i < mChannelMasks.size(); i++) { 6330 ALOGV("AudioPort::dump mChannelMasks %zu %08x", i, mChannelMasks[i]); 6331 6332 if (i == 0 && mChannelMasks[i] == 0) { 6333 snprintf(buffer, SIZE, "Dynamic"); 6334 } else { 6335 snprintf(buffer, SIZE, "0x%04x", mChannelMasks[i]); 6336 } 6337 result.append(buffer); 6338 result.append(i == (mChannelMasks.size() - 1) ? "" : ", "); 6339 } 6340 result.append("\n"); 6341 } 6342 6343 if (mFormats.size() != 0) { 6344 snprintf(buffer, SIZE, "%*s- formats: ", spaces, ""); 6345 result.append(buffer); 6346 for (size_t i = 0; i < mFormats.size(); i++) { 6347 const char *formatStr = enumToString(sFormatNameToEnumTable, 6348 ARRAY_SIZE(sFormatNameToEnumTable), 6349 mFormats[i]); 6350 if (i == 0 && strcmp(formatStr, "") == 0) { 6351 snprintf(buffer, SIZE, "Dynamic"); 6352 } else { 6353 snprintf(buffer, SIZE, "%s", formatStr); 6354 } 6355 result.append(buffer); 6356 result.append(i == (mFormats.size() - 1) ? "" : ", "); 6357 } 6358 result.append("\n"); 6359 } 6360 write(fd, result.string(), result.size()); 6361 if (mGains.size() != 0) { 6362 snprintf(buffer, SIZE, "%*s- gains:\n", spaces, ""); 6363 write(fd, buffer, strlen(buffer) + 1); 6364 result.append(buffer); 6365 for (size_t i = 0; i < mGains.size(); i++) { 6366 mGains[i]->dump(fd, spaces + 2, i); 6367 } 6368 } 6369 } 6370 6371 // --- AudioGain class implementation 6372 6373 AudioPolicyManager::AudioGain::AudioGain(int index, bool useInChannelMask) 6374 { 6375 mIndex = index; 6376 mUseInChannelMask = useInChannelMask; 6377 memset(&mGain, 0, sizeof(struct audio_gain)); 6378 } 6379 6380 void AudioPolicyManager::AudioGain::getDefaultConfig(struct audio_gain_config *config) 6381 { 6382 config->index = mIndex; 6383 config->mode = mGain.mode; 6384 config->channel_mask = mGain.channel_mask; 6385 if ((mGain.mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 6386 config->values[0] = mGain.default_value; 6387 } else { 6388 uint32_t numValues; 6389 if (mUseInChannelMask) { 6390 numValues = audio_channel_count_from_in_mask(mGain.channel_mask); 6391 } else { 6392 numValues = audio_channel_count_from_out_mask(mGain.channel_mask); 6393 } 6394 for (size_t i = 0; i < numValues; i++) { 6395 config->values[i] = mGain.default_value; 6396 } 6397 } 6398 if ((mGain.mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 6399 config->ramp_duration_ms = mGain.min_ramp_ms; 6400 } 6401 } 6402 6403 status_t AudioPolicyManager::AudioGain::checkConfig(const struct audio_gain_config *config) 6404 { 6405 if ((config->mode & ~mGain.mode) != 0) { 6406 return BAD_VALUE; 6407 } 6408 if ((config->mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 6409 if ((config->values[0] < mGain.min_value) || 6410 (config->values[0] > mGain.max_value)) { 6411 return BAD_VALUE; 6412 } 6413 } else { 6414 if ((config->channel_mask & ~mGain.channel_mask) != 0) { 6415 return BAD_VALUE; 6416 } 6417 uint32_t numValues; 6418 if (mUseInChannelMask) { 6419 numValues = audio_channel_count_from_in_mask(config->channel_mask); 6420 } else { 6421 numValues = audio_channel_count_from_out_mask(config->channel_mask); 6422 } 6423 for (size_t i = 0; i < numValues; i++) { 6424 if ((config->values[i] < mGain.min_value) || 6425 (config->values[i] > mGain.max_value)) { 6426 return BAD_VALUE; 6427 } 6428 } 6429 } 6430 if ((config->mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 6431 if ((config->ramp_duration_ms < mGain.min_ramp_ms) || 6432 (config->ramp_duration_ms > mGain.max_ramp_ms)) { 6433 return BAD_VALUE; 6434 } 6435 } 6436 return NO_ERROR; 6437 } 6438 6439 void AudioPolicyManager::AudioGain::dump(int fd, int spaces, int index) const 6440 { 6441 const size_t SIZE = 256; 6442 char buffer[SIZE]; 6443 String8 result; 6444 6445 snprintf(buffer, SIZE, "%*sGain %d:\n", spaces, "", index+1); 6446 result.append(buffer); 6447 snprintf(buffer, SIZE, "%*s- mode: %08x\n", spaces, "", mGain.mode); 6448 result.append(buffer); 6449 snprintf(buffer, SIZE, "%*s- channel_mask: %08x\n", spaces, "", mGain.channel_mask); 6450 result.append(buffer); 6451 snprintf(buffer, SIZE, "%*s- min_value: %d mB\n", spaces, "", mGain.min_value); 6452 result.append(buffer); 6453 snprintf(buffer, SIZE, "%*s- max_value: %d mB\n", spaces, "", mGain.max_value); 6454 result.append(buffer); 6455 snprintf(buffer, SIZE, "%*s- default_value: %d mB\n", spaces, "", mGain.default_value); 6456 result.append(buffer); 6457 snprintf(buffer, SIZE, "%*s- step_value: %d mB\n", spaces, "", mGain.step_value); 6458 result.append(buffer); 6459 snprintf(buffer, SIZE, "%*s- min_ramp_ms: %d ms\n", spaces, "", mGain.min_ramp_ms); 6460 result.append(buffer); 6461 snprintf(buffer, SIZE, "%*s- max_ramp_ms: %d ms\n", spaces, "", mGain.max_ramp_ms); 6462 result.append(buffer); 6463 6464 write(fd, result.string(), result.size()); 6465 } 6466 6467 // --- AudioPortConfig class implementation 6468 6469 AudioPolicyManager::AudioPortConfig::AudioPortConfig() 6470 { 6471 mSamplingRate = 0; 6472 mChannelMask = AUDIO_CHANNEL_NONE; 6473 mFormat = AUDIO_FORMAT_INVALID; 6474 mGain.index = -1; 6475 } 6476 6477 status_t AudioPolicyManager::AudioPortConfig::applyAudioPortConfig( 6478 const struct audio_port_config *config, 6479 struct audio_port_config *backupConfig) 6480 { 6481 struct audio_port_config localBackupConfig; 6482 status_t status = NO_ERROR; 6483 6484 localBackupConfig.config_mask = config->config_mask; 6485 toAudioPortConfig(&localBackupConfig); 6486 6487 sp<AudioPort> audioport = getAudioPort(); 6488 if (audioport == 0) { 6489 status = NO_INIT; 6490 goto exit; 6491 } 6492 if (config->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE) { 6493 status = audioport->checkExactSamplingRate(config->sample_rate); 6494 if (status != NO_ERROR) { 6495 goto exit; 6496 } 6497 mSamplingRate = config->sample_rate; 6498 } 6499 if (config->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) { 6500 status = audioport->checkExactChannelMask(config->channel_mask); 6501 if (status != NO_ERROR) { 6502 goto exit; 6503 } 6504 mChannelMask = config->channel_mask; 6505 } 6506 if (config->config_mask & AUDIO_PORT_CONFIG_FORMAT) { 6507 status = audioport->checkFormat(config->format); 6508 if (status != NO_ERROR) { 6509 goto exit; 6510 } 6511 mFormat = config->format; 6512 } 6513 if (config->config_mask & AUDIO_PORT_CONFIG_GAIN) { 6514 status = audioport->checkGain(&config->gain, config->gain.index); 6515 if (status != NO_ERROR) { 6516 goto exit; 6517 } 6518 mGain = config->gain; 6519 } 6520 6521 exit: 6522 if (status != NO_ERROR) { 6523 applyAudioPortConfig(&localBackupConfig); 6524 } 6525 if (backupConfig != NULL) { 6526 *backupConfig = localBackupConfig; 6527 } 6528 return status; 6529 } 6530 6531 void AudioPolicyManager::AudioPortConfig::toAudioPortConfig( 6532 struct audio_port_config *dstConfig, 6533 const struct audio_port_config *srcConfig) const 6534 { 6535 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE) { 6536 dstConfig->sample_rate = mSamplingRate; 6537 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE)) { 6538 dstConfig->sample_rate = srcConfig->sample_rate; 6539 } 6540 } else { 6541 dstConfig->sample_rate = 0; 6542 } 6543 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) { 6544 dstConfig->channel_mask = mChannelMask; 6545 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK)) { 6546 dstConfig->channel_mask = srcConfig->channel_mask; 6547 } 6548 } else { 6549 dstConfig->channel_mask = AUDIO_CHANNEL_NONE; 6550 } 6551 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_FORMAT) { 6552 dstConfig->format = mFormat; 6553 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_FORMAT)) { 6554 dstConfig->format = srcConfig->format; 6555 } 6556 } else { 6557 dstConfig->format = AUDIO_FORMAT_INVALID; 6558 } 6559 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_GAIN) { 6560 dstConfig->gain = mGain; 6561 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_GAIN)) { 6562 dstConfig->gain = srcConfig->gain; 6563 } 6564 } else { 6565 dstConfig->gain.index = -1; 6566 } 6567 if (dstConfig->gain.index != -1) { 6568 dstConfig->config_mask |= AUDIO_PORT_CONFIG_GAIN; 6569 } else { 6570 dstConfig->config_mask &= ~AUDIO_PORT_CONFIG_GAIN; 6571 } 6572 } 6573 6574 // --- IOProfile class implementation 6575 6576 AudioPolicyManager::IOProfile::IOProfile(const String8& name, audio_port_role_t role, 6577 const sp<HwModule>& module) 6578 : AudioPort(name, AUDIO_PORT_TYPE_MIX, role, module) 6579 { 6580 } 6581 6582 AudioPolicyManager::IOProfile::~IOProfile() 6583 { 6584 } 6585 6586 // checks if the IO profile is compatible with specified parameters. 6587 // Sampling rate, format and channel mask must be specified in order to 6588 // get a valid a match 6589 bool AudioPolicyManager::IOProfile::isCompatibleProfile(audio_devices_t device, 6590 uint32_t samplingRate, 6591 uint32_t *updatedSamplingRate, 6592 audio_format_t format, 6593 audio_channel_mask_t channelMask, 6594 uint32_t flags) const 6595 { 6596 const bool isPlaybackThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SOURCE; 6597 const bool isRecordThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SINK; 6598 ALOG_ASSERT(isPlaybackThread != isRecordThread); 6599 6600 if ((mSupportedDevices.types() & device) != device) { 6601 return false; 6602 } 6603 6604 if (samplingRate == 0) { 6605 return false; 6606 } 6607 uint32_t myUpdatedSamplingRate = samplingRate; 6608 if (isPlaybackThread && checkExactSamplingRate(samplingRate) != NO_ERROR) { 6609 return false; 6610 } 6611 if (isRecordThread && checkCompatibleSamplingRate(samplingRate, &myUpdatedSamplingRate) != 6612 NO_ERROR) { 6613 return false; 6614 } 6615 6616 if (!audio_is_valid_format(format) || checkFormat(format) != NO_ERROR) { 6617 return false; 6618 } 6619 6620 if (isPlaybackThread && (!audio_is_output_channel(channelMask) || 6621 checkExactChannelMask(channelMask) != NO_ERROR)) { 6622 return false; 6623 } 6624 if (isRecordThread && (!audio_is_input_channel(channelMask) || 6625 checkCompatibleChannelMask(channelMask) != NO_ERROR)) { 6626 return false; 6627 } 6628 6629 if (isPlaybackThread && (mFlags & flags) != flags) { 6630 return false; 6631 } 6632 // The only input flag that is allowed to be different is the fast flag. 6633 // An existing fast stream is compatible with a normal track request. 6634 // An existing normal stream is compatible with a fast track request, 6635 // but the fast request will be denied by AudioFlinger and converted to normal track. 6636 if (isRecordThread && ((mFlags ^ flags) & 6637 ~AUDIO_INPUT_FLAG_FAST)) { 6638 return false; 6639 } 6640 6641 if (updatedSamplingRate != NULL) { 6642 *updatedSamplingRate = myUpdatedSamplingRate; 6643 } 6644 return true; 6645 } 6646 6647 void AudioPolicyManager::IOProfile::dump(int fd) 6648 { 6649 const size_t SIZE = 256; 6650 char buffer[SIZE]; 6651 String8 result; 6652 6653 AudioPort::dump(fd, 4); 6654 6655 snprintf(buffer, SIZE, " - flags: 0x%04x\n", mFlags); 6656 result.append(buffer); 6657 snprintf(buffer, SIZE, " - devices:\n"); 6658 result.append(buffer); 6659 write(fd, result.string(), result.size()); 6660 for (size_t i = 0; i < mSupportedDevices.size(); i++) { 6661 mSupportedDevices[i]->dump(fd, 6, i); 6662 } 6663 } 6664 6665 void AudioPolicyManager::IOProfile::log() 6666 { 6667 const size_t SIZE = 256; 6668 char buffer[SIZE]; 6669 String8 result; 6670 6671 ALOGV(" - sampling rates: "); 6672 for (size_t i = 0; i < mSamplingRates.size(); i++) { 6673 ALOGV(" %d", mSamplingRates[i]); 6674 } 6675 6676 ALOGV(" - channel masks: "); 6677 for (size_t i = 0; i < mChannelMasks.size(); i++) { 6678 ALOGV(" 0x%04x", mChannelMasks[i]); 6679 } 6680 6681 ALOGV(" - formats: "); 6682 for (size_t i = 0; i < mFormats.size(); i++) { 6683 ALOGV(" 0x%08x", mFormats[i]); 6684 } 6685 6686 ALOGV(" - devices: 0x%04x\n", mSupportedDevices.types()); 6687 ALOGV(" - flags: 0x%04x\n", mFlags); 6688 } 6689 6690 6691 // --- DeviceDescriptor implementation 6692 6693 6694 AudioPolicyManager::DeviceDescriptor::DeviceDescriptor(const String8& name, audio_devices_t type) : 6695 AudioPort(name, AUDIO_PORT_TYPE_DEVICE, 6696 audio_is_output_device(type) ? AUDIO_PORT_ROLE_SINK : 6697 AUDIO_PORT_ROLE_SOURCE, 6698 NULL), 6699 mDeviceType(type), mAddress(""), mId(0) 6700 { 6701 if (mGains.size() > 0) { 6702 mGains[0]->getDefaultConfig(&mGain); 6703 } 6704 } 6705 6706 bool AudioPolicyManager::DeviceDescriptor::equals(const sp<DeviceDescriptor>& other) const 6707 { 6708 // Devices are considered equal if they: 6709 // - are of the same type (a device type cannot be AUDIO_DEVICE_NONE) 6710 // - have the same address or one device does not specify the address 6711 // - have the same channel mask or one device does not specify the channel mask 6712 return (mDeviceType == other->mDeviceType) && 6713 (mAddress == "" || other->mAddress == "" || mAddress == other->mAddress) && 6714 (mChannelMask == 0 || other->mChannelMask == 0 || 6715 mChannelMask == other->mChannelMask); 6716 } 6717 6718 void AudioPolicyManager::DeviceVector::refreshTypes() 6719 { 6720 mDeviceTypes = AUDIO_DEVICE_NONE; 6721 for(size_t i = 0; i < size(); i++) { 6722 mDeviceTypes |= itemAt(i)->mDeviceType; 6723 } 6724 ALOGV("DeviceVector::refreshTypes() mDeviceTypes %08x", mDeviceTypes); 6725 } 6726 6727 ssize_t AudioPolicyManager::DeviceVector::indexOf(const sp<DeviceDescriptor>& item) const 6728 { 6729 for(size_t i = 0; i < size(); i++) { 6730 if (item->equals(itemAt(i))) { 6731 return i; 6732 } 6733 } 6734 return -1; 6735 } 6736 6737 ssize_t AudioPolicyManager::DeviceVector::add(const sp<DeviceDescriptor>& item) 6738 { 6739 ssize_t ret = indexOf(item); 6740 6741 if (ret < 0) { 6742 ret = SortedVector::add(item); 6743 if (ret >= 0) { 6744 refreshTypes(); 6745 } 6746 } else { 6747 ALOGW("DeviceVector::add device %08x already in", item->mDeviceType); 6748 ret = -1; 6749 } 6750 return ret; 6751 } 6752 6753 ssize_t AudioPolicyManager::DeviceVector::remove(const sp<DeviceDescriptor>& item) 6754 { 6755 size_t i; 6756 ssize_t ret = indexOf(item); 6757 6758 if (ret < 0) { 6759 ALOGW("DeviceVector::remove device %08x not in", item->mDeviceType); 6760 } else { 6761 ret = SortedVector::removeAt(ret); 6762 if (ret >= 0) { 6763 refreshTypes(); 6764 } 6765 } 6766 return ret; 6767 } 6768 6769 void AudioPolicyManager::DeviceVector::loadDevicesFromType(audio_devices_t types) 6770 { 6771 DeviceVector deviceList; 6772 6773 uint32_t role_bit = AUDIO_DEVICE_BIT_IN & types; 6774 types &= ~role_bit; 6775 6776 while (types) { 6777 uint32_t i = 31 - __builtin_clz(types); 6778 uint32_t type = 1 << i; 6779 types &= ~type; 6780 add(new DeviceDescriptor(String8(""), type | role_bit)); 6781 } 6782 } 6783 6784 void AudioPolicyManager::DeviceVector::loadDevicesFromName(char *name, 6785 const DeviceVector& declaredDevices) 6786 { 6787 char *devName = strtok(name, "|"); 6788 while (devName != NULL) { 6789 if (strlen(devName) != 0) { 6790 audio_devices_t type = stringToEnum(sDeviceNameToEnumTable, 6791 ARRAY_SIZE(sDeviceNameToEnumTable), 6792 devName); 6793 if (type != AUDIO_DEVICE_NONE) { 6794 add(new DeviceDescriptor(String8(""), type)); 6795 } else { 6796 sp<DeviceDescriptor> deviceDesc = 6797 declaredDevices.getDeviceFromName(String8(devName)); 6798 if (deviceDesc != 0) { 6799 add(deviceDesc); 6800 } 6801 } 6802 } 6803 devName = strtok(NULL, "|"); 6804 } 6805 } 6806 6807 sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDevice( 6808 audio_devices_t type, String8 address) const 6809 { 6810 sp<DeviceDescriptor> device; 6811 for (size_t i = 0; i < size(); i++) { 6812 if (itemAt(i)->mDeviceType == type) { 6813 device = itemAt(i); 6814 if (itemAt(i)->mAddress = address) { 6815 break; 6816 } 6817 } 6818 } 6819 ALOGV("DeviceVector::getDevice() for type %d address %s found %p", 6820 type, address.string(), device.get()); 6821 return device; 6822 } 6823 6824 sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDeviceFromId( 6825 audio_port_handle_t id) const 6826 { 6827 sp<DeviceDescriptor> device; 6828 for (size_t i = 0; i < size(); i++) { 6829 ALOGV("DeviceVector::getDeviceFromId(%d) itemAt(%zu)->mId %d", id, i, itemAt(i)->mId); 6830 if (itemAt(i)->mId == id) { 6831 device = itemAt(i); 6832 break; 6833 } 6834 } 6835 return device; 6836 } 6837 6838 AudioPolicyManager::DeviceVector AudioPolicyManager::DeviceVector::getDevicesFromType( 6839 audio_devices_t type) const 6840 { 6841 DeviceVector devices; 6842 for (size_t i = 0; (i < size()) && (type != AUDIO_DEVICE_NONE); i++) { 6843 if (itemAt(i)->mDeviceType & type & ~AUDIO_DEVICE_BIT_IN) { 6844 devices.add(itemAt(i)); 6845 type &= ~itemAt(i)->mDeviceType; 6846 ALOGV("DeviceVector::getDevicesFromType() for type %x found %p", 6847 itemAt(i)->mDeviceType, itemAt(i).get()); 6848 } 6849 } 6850 return devices; 6851 } 6852 6853 AudioPolicyManager::DeviceVector AudioPolicyManager::DeviceVector::getDevicesFromTypeAddr( 6854 audio_devices_t type, String8 address) const 6855 { 6856 DeviceVector devices; 6857 //ALOGV(" looking for device=%x, addr=%s", type, address.string()); 6858 for (size_t i = 0; i < size(); i++) { 6859 //ALOGV(" at i=%d: device=%x, addr=%s", 6860 // i, itemAt(i)->mDeviceType, itemAt(i)->mAddress.string()); 6861 if (itemAt(i)->mDeviceType == type) { 6862 if (itemAt(i)->mAddress == address) { 6863 //ALOGV(" found matching address %s", address.string()); 6864 devices.add(itemAt(i)); 6865 } 6866 } 6867 } 6868 return devices; 6869 } 6870 6871 sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDeviceFromName( 6872 const String8& name) const 6873 { 6874 sp<DeviceDescriptor> device; 6875 for (size_t i = 0; i < size(); i++) { 6876 if (itemAt(i)->mName == name) { 6877 device = itemAt(i); 6878 break; 6879 } 6880 } 6881 return device; 6882 } 6883 6884 void AudioPolicyManager::DeviceDescriptor::toAudioPortConfig( 6885 struct audio_port_config *dstConfig, 6886 const struct audio_port_config *srcConfig) const 6887 { 6888 dstConfig->config_mask = AUDIO_PORT_CONFIG_CHANNEL_MASK|AUDIO_PORT_CONFIG_GAIN; 6889 if (srcConfig != NULL) { 6890 dstConfig->config_mask |= srcConfig->config_mask; 6891 } 6892 6893 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 6894 6895 dstConfig->id = mId; 6896 dstConfig->role = audio_is_output_device(mDeviceType) ? 6897 AUDIO_PORT_ROLE_SINK : AUDIO_PORT_ROLE_SOURCE; 6898 dstConfig->type = AUDIO_PORT_TYPE_DEVICE; 6899 dstConfig->ext.device.type = mDeviceType; 6900 dstConfig->ext.device.hw_module = mModule->mHandle; 6901 strncpy(dstConfig->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN); 6902 } 6903 6904 void AudioPolicyManager::DeviceDescriptor::toAudioPort(struct audio_port *port) const 6905 { 6906 ALOGV("DeviceDescriptor::toAudioPort() handle %d type %x", mId, mDeviceType); 6907 AudioPort::toAudioPort(port); 6908 port->id = mId; 6909 toAudioPortConfig(&port->active_config); 6910 port->ext.device.type = mDeviceType; 6911 port->ext.device.hw_module = mModule->mHandle; 6912 strncpy(port->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN); 6913 } 6914 6915 status_t AudioPolicyManager::DeviceDescriptor::dump(int fd, int spaces, int index) const 6916 { 6917 const size_t SIZE = 256; 6918 char buffer[SIZE]; 6919 String8 result; 6920 6921 snprintf(buffer, SIZE, "%*sDevice %d:\n", spaces, "", index+1); 6922 result.append(buffer); 6923 if (mId != 0) { 6924 snprintf(buffer, SIZE, "%*s- id: %2d\n", spaces, "", mId); 6925 result.append(buffer); 6926 } 6927 snprintf(buffer, SIZE, "%*s- type: %-48s\n", spaces, "", 6928 enumToString(sDeviceNameToEnumTable, 6929 ARRAY_SIZE(sDeviceNameToEnumTable), 6930 mDeviceType)); 6931 result.append(buffer); 6932 if (mAddress.size() != 0) { 6933 snprintf(buffer, SIZE, "%*s- address: %-32s\n", spaces, "", mAddress.string()); 6934 result.append(buffer); 6935 } 6936 write(fd, result.string(), result.size()); 6937 AudioPort::dump(fd, spaces); 6938 6939 return NO_ERROR; 6940 } 6941 6942 status_t AudioPolicyManager::AudioPatch::dump(int fd, int spaces, int index) const 6943 { 6944 const size_t SIZE = 256; 6945 char buffer[SIZE]; 6946 String8 result; 6947 6948 6949 snprintf(buffer, SIZE, "%*sAudio patch %d:\n", spaces, "", index+1); 6950 result.append(buffer); 6951 snprintf(buffer, SIZE, "%*s- handle: %2d\n", spaces, "", mHandle); 6952 result.append(buffer); 6953 snprintf(buffer, SIZE, "%*s- audio flinger handle: %2d\n", spaces, "", mAfPatchHandle); 6954 result.append(buffer); 6955 snprintf(buffer, SIZE, "%*s- owner uid: %2d\n", spaces, "", mUid); 6956 result.append(buffer); 6957 snprintf(buffer, SIZE, "%*s- %d sources:\n", spaces, "", mPatch.num_sources); 6958 result.append(buffer); 6959 for (size_t i = 0; i < mPatch.num_sources; i++) { 6960 if (mPatch.sources[i].type == AUDIO_PORT_TYPE_DEVICE) { 6961 snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "", 6962 mPatch.sources[i].id, enumToString(sDeviceNameToEnumTable, 6963 ARRAY_SIZE(sDeviceNameToEnumTable), 6964 mPatch.sources[i].ext.device.type)); 6965 } else { 6966 snprintf(buffer, SIZE, "%*s- Mix ID %d I/O handle %d\n", spaces + 2, "", 6967 mPatch.sources[i].id, mPatch.sources[i].ext.mix.handle); 6968 } 6969 result.append(buffer); 6970 } 6971 snprintf(buffer, SIZE, "%*s- %d sinks:\n", spaces, "", mPatch.num_sinks); 6972 result.append(buffer); 6973 for (size_t i = 0; i < mPatch.num_sinks; i++) { 6974 if (mPatch.sinks[i].type == AUDIO_PORT_TYPE_DEVICE) { 6975 snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "", 6976 mPatch.sinks[i].id, enumToString(sDeviceNameToEnumTable, 6977 ARRAY_SIZE(sDeviceNameToEnumTable), 6978 mPatch.sinks[i].ext.device.type)); 6979 } else { 6980 snprintf(buffer, SIZE, "%*s- Mix ID %d I/O handle %d\n", spaces + 2, "", 6981 mPatch.sinks[i].id, mPatch.sinks[i].ext.mix.handle); 6982 } 6983 result.append(buffer); 6984 } 6985 6986 write(fd, result.string(), result.size()); 6987 return NO_ERROR; 6988 } 6989 6990 // --- audio_policy.conf file parsing 6991 6992 uint32_t AudioPolicyManager::parseOutputFlagNames(char *name) 6993 { 6994 uint32_t flag = 0; 6995 6996 // it is OK to cast name to non const here as we are not going to use it after 6997 // strtok() modifies it 6998 char *flagName = strtok(name, "|"); 6999 while (flagName != NULL) { 7000 if (strlen(flagName) != 0) { 7001 flag |= stringToEnum(sOutputFlagNameToEnumTable, 7002 ARRAY_SIZE(sOutputFlagNameToEnumTable), 7003 flagName); 7004 } 7005 flagName = strtok(NULL, "|"); 7006 } 7007 //force direct flag if offload flag is set: offloading implies a direct output stream 7008 // and all common behaviors are driven by checking only the direct flag 7009 // this should normally be set appropriately in the policy configuration file 7010 if ((flag & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) { 7011 flag |= AUDIO_OUTPUT_FLAG_DIRECT; 7012 } 7013 7014 return flag; 7015 } 7016 7017 uint32_t AudioPolicyManager::parseInputFlagNames(char *name) 7018 { 7019 uint32_t flag = 0; 7020 7021 // it is OK to cast name to non const here as we are not going to use it after 7022 // strtok() modifies it 7023 char *flagName = strtok(name, "|"); 7024 while (flagName != NULL) { 7025 if (strlen(flagName) != 0) { 7026 flag |= stringToEnum(sInputFlagNameToEnumTable, 7027 ARRAY_SIZE(sInputFlagNameToEnumTable), 7028 flagName); 7029 } 7030 flagName = strtok(NULL, "|"); 7031 } 7032 return flag; 7033 } 7034 7035 audio_devices_t AudioPolicyManager::parseDeviceNames(char *name) 7036 { 7037 uint32_t device = 0; 7038 7039 char *devName = strtok(name, "|"); 7040 while (devName != NULL) { 7041 if (strlen(devName) != 0) { 7042 device |= stringToEnum(sDeviceNameToEnumTable, 7043 ARRAY_SIZE(sDeviceNameToEnumTable), 7044 devName); 7045 } 7046 devName = strtok(NULL, "|"); 7047 } 7048 return device; 7049 } 7050 7051 void AudioPolicyManager::loadHwModule(cnode *root) 7052 { 7053 status_t status = NAME_NOT_FOUND; 7054 cnode *node; 7055 sp<HwModule> module = new HwModule(root->name); 7056 7057 node = config_find(root, DEVICES_TAG); 7058 if (node != NULL) { 7059 node = node->first_child; 7060 while (node) { 7061 ALOGV("loadHwModule() loading device %s", node->name); 7062 status_t tmpStatus = module->loadDevice(node); 7063 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 7064 status = tmpStatus; 7065 } 7066 node = node->next; 7067 } 7068 } 7069 node = config_find(root, OUTPUTS_TAG); 7070 if (node != NULL) { 7071 node = node->first_child; 7072 while (node) { 7073 ALOGV("loadHwModule() loading output %s", node->name); 7074 status_t tmpStatus = module->loadOutput(node); 7075 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 7076 status = tmpStatus; 7077 } 7078 node = node->next; 7079 } 7080 } 7081 node = config_find(root, INPUTS_TAG); 7082 if (node != NULL) { 7083 node = node->first_child; 7084 while (node) { 7085 ALOGV("loadHwModule() loading input %s", node->name); 7086 status_t tmpStatus = module->loadInput(node); 7087 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 7088 status = tmpStatus; 7089 } 7090 node = node->next; 7091 } 7092 } 7093 loadGlobalConfig(root, module); 7094 7095 if (status == NO_ERROR) { 7096 mHwModules.add(module); 7097 } 7098 } 7099 7100 void AudioPolicyManager::loadHwModules(cnode *root) 7101 { 7102 cnode *node = config_find(root, AUDIO_HW_MODULE_TAG); 7103 if (node == NULL) { 7104 return; 7105 } 7106 7107 node = node->first_child; 7108 while (node) { 7109 ALOGV("loadHwModules() loading module %s", node->name); 7110 loadHwModule(node); 7111 node = node->next; 7112 } 7113 } 7114 7115 void AudioPolicyManager::loadGlobalConfig(cnode *root, const sp<HwModule>& module) 7116 { 7117 cnode *node = config_find(root, GLOBAL_CONFIG_TAG); 7118 7119 if (node == NULL) { 7120 return; 7121 } 7122 DeviceVector declaredDevices; 7123 if (module != NULL) { 7124 declaredDevices = module->mDeclaredDevices; 7125 } 7126 7127 node = node->first_child; 7128 while (node) { 7129 if (strcmp(ATTACHED_OUTPUT_DEVICES_TAG, node->name) == 0) { 7130 mAvailableOutputDevices.loadDevicesFromName((char *)node->value, 7131 declaredDevices); 7132 ALOGV("loadGlobalConfig() Attached Output Devices %08x", 7133 mAvailableOutputDevices.types()); 7134 } else if (strcmp(DEFAULT_OUTPUT_DEVICE_TAG, node->name) == 0) { 7135 audio_devices_t device = (audio_devices_t)stringToEnum(sDeviceNameToEnumTable, 7136 ARRAY_SIZE(sDeviceNameToEnumTable), 7137 (char *)node->value); 7138 if (device != AUDIO_DEVICE_NONE) { 7139 mDefaultOutputDevice = new DeviceDescriptor(String8(""), device); 7140 } else { 7141 ALOGW("loadGlobalConfig() default device not specified"); 7142 } 7143 ALOGV("loadGlobalConfig() mDefaultOutputDevice %08x", mDefaultOutputDevice->mDeviceType); 7144 } else if (strcmp(ATTACHED_INPUT_DEVICES_TAG, node->name) == 0) { 7145 mAvailableInputDevices.loadDevicesFromName((char *)node->value, 7146 declaredDevices); 7147 ALOGV("loadGlobalConfig() Available InputDevices %08x", mAvailableInputDevices.types()); 7148 } else if (strcmp(SPEAKER_DRC_ENABLED_TAG, node->name) == 0) { 7149 mSpeakerDrcEnabled = stringToBool((char *)node->value); 7150 ALOGV("loadGlobalConfig() mSpeakerDrcEnabled = %d", mSpeakerDrcEnabled); 7151 } else if (strcmp(AUDIO_HAL_VERSION_TAG, node->name) == 0) { 7152 uint32_t major, minor; 7153 sscanf((char *)node->value, "%u.%u", &major, &minor); 7154 module->mHalVersion = HARDWARE_DEVICE_API_VERSION(major, minor); 7155 ALOGV("loadGlobalConfig() mHalVersion = %04x major %u minor %u", 7156 module->mHalVersion, major, minor); 7157 } 7158 node = node->next; 7159 } 7160 } 7161 7162 status_t AudioPolicyManager::loadAudioPolicyConfig(const char *path) 7163 { 7164 cnode *root; 7165 char *data; 7166 7167 data = (char *)load_file(path, NULL); 7168 if (data == NULL) { 7169 return -ENODEV; 7170 } 7171 root = config_node("", ""); 7172 config_load(root, data); 7173 7174 loadHwModules(root); 7175 // legacy audio_policy.conf files have one global_configuration section 7176 loadGlobalConfig(root, getModuleFromName(AUDIO_HARDWARE_MODULE_ID_PRIMARY)); 7177 config_free(root); 7178 free(root); 7179 free(data); 7180 7181 ALOGI("loadAudioPolicyConfig() loaded %s\n", path); 7182 7183 return NO_ERROR; 7184 } 7185 7186 void AudioPolicyManager::defaultAudioPolicyConfig(void) 7187 { 7188 sp<HwModule> module; 7189 sp<IOProfile> profile; 7190 sp<DeviceDescriptor> defaultInputDevice = new DeviceDescriptor(String8(""), 7191 AUDIO_DEVICE_IN_BUILTIN_MIC); 7192 mAvailableOutputDevices.add(mDefaultOutputDevice); 7193 mAvailableInputDevices.add(defaultInputDevice); 7194 7195 module = new HwModule("primary"); 7196 7197 profile = new IOProfile(String8("primary"), AUDIO_PORT_ROLE_SOURCE, module); 7198 profile->mSamplingRates.add(44100); 7199 profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT); 7200 profile->mChannelMasks.add(AUDIO_CHANNEL_OUT_STEREO); 7201 profile->mSupportedDevices.add(mDefaultOutputDevice); 7202 profile->mFlags = AUDIO_OUTPUT_FLAG_PRIMARY; 7203 module->mOutputProfiles.add(profile); 7204 7205 profile = new IOProfile(String8("primary"), AUDIO_PORT_ROLE_SINK, module); 7206 profile->mSamplingRates.add(8000); 7207 profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT); 7208 profile->mChannelMasks.add(AUDIO_CHANNEL_IN_MONO); 7209 profile->mSupportedDevices.add(defaultInputDevice); 7210 module->mInputProfiles.add(profile); 7211 7212 mHwModules.add(module); 7213 } 7214 7215 audio_stream_type_t AudioPolicyManager::streamTypefromAttributesInt(const audio_attributes_t *attr) 7216 { 7217 // flags to stream type mapping 7218 if ((attr->flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) { 7219 return AUDIO_STREAM_ENFORCED_AUDIBLE; 7220 } 7221 if ((attr->flags & AUDIO_FLAG_SCO) == AUDIO_FLAG_SCO) { 7222 return AUDIO_STREAM_BLUETOOTH_SCO; 7223 } 7224 7225 // usage to stream type mapping 7226 switch (attr->usage) { 7227 case AUDIO_USAGE_MEDIA: 7228 case AUDIO_USAGE_GAME: 7229 case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY: 7230 case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: 7231 return AUDIO_STREAM_MUSIC; 7232 case AUDIO_USAGE_ASSISTANCE_SONIFICATION: 7233 return AUDIO_STREAM_SYSTEM; 7234 case AUDIO_USAGE_VOICE_COMMUNICATION: 7235 return AUDIO_STREAM_VOICE_CALL; 7236 7237 case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING: 7238 return AUDIO_STREAM_DTMF; 7239 7240 case AUDIO_USAGE_ALARM: 7241 return AUDIO_STREAM_ALARM; 7242 case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE: 7243 return AUDIO_STREAM_RING; 7244 7245 case AUDIO_USAGE_NOTIFICATION: 7246 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST: 7247 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT: 7248 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED: 7249 case AUDIO_USAGE_NOTIFICATION_EVENT: 7250 return AUDIO_STREAM_NOTIFICATION; 7251 7252 case AUDIO_USAGE_UNKNOWN: 7253 default: 7254 return AUDIO_STREAM_MUSIC; 7255 } 7256 } 7257 }; // namespace android 7258
