AudioPolicyManager.cpp revision f5e7e79bf88b0c08c73262e7992634797a4f81a1
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 50namespace android { 51 52// ---------------------------------------------------------------------------- 53// Definitions for audio_policy.conf file parsing 54// ---------------------------------------------------------------------------- 55 56struct 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 64const 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_WIRED_HEADSET), 68 STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADPHONE), 69 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO), 70 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET), 71 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT), 72 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_SCO), 73 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP), 74 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES), 75 STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER), 76 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_A2DP), 77 STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_DIGITAL), 78 STRING_TO_ENUM(AUDIO_DEVICE_OUT_HDMI), 79 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET), 80 STRING_TO_ENUM(AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET), 81 STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_ACCESSORY), 82 STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_DEVICE), 83 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_USB), 84 STRING_TO_ENUM(AUDIO_DEVICE_OUT_REMOTE_SUBMIX), 85 STRING_TO_ENUM(AUDIO_DEVICE_OUT_TELEPHONY_TX), 86 STRING_TO_ENUM(AUDIO_DEVICE_OUT_LINE), 87 STRING_TO_ENUM(AUDIO_DEVICE_OUT_HDMI_ARC), 88 STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPDIF), 89 STRING_TO_ENUM(AUDIO_DEVICE_OUT_FM), 90 STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_LINE), 91 STRING_TO_ENUM(AUDIO_DEVICE_IN_AMBIENT), 92 STRING_TO_ENUM(AUDIO_DEVICE_IN_BUILTIN_MIC), 93 STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET), 94 STRING_TO_ENUM(AUDIO_DEVICE_IN_ALL_SCO), 95 STRING_TO_ENUM(AUDIO_DEVICE_IN_WIRED_HEADSET), 96 STRING_TO_ENUM(AUDIO_DEVICE_IN_AUX_DIGITAL), 97 STRING_TO_ENUM(AUDIO_DEVICE_IN_HDMI), 98 STRING_TO_ENUM(AUDIO_DEVICE_IN_TELEPHONY_RX), 99 STRING_TO_ENUM(AUDIO_DEVICE_IN_VOICE_CALL), 100 STRING_TO_ENUM(AUDIO_DEVICE_IN_BACK_MIC), 101 STRING_TO_ENUM(AUDIO_DEVICE_IN_REMOTE_SUBMIX), 102 STRING_TO_ENUM(AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET), 103 STRING_TO_ENUM(AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET), 104 STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_ACCESSORY), 105 STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_DEVICE), 106 STRING_TO_ENUM(AUDIO_DEVICE_IN_FM_TUNER), 107 STRING_TO_ENUM(AUDIO_DEVICE_IN_TV_TUNER), 108 STRING_TO_ENUM(AUDIO_DEVICE_IN_LINE), 109 STRING_TO_ENUM(AUDIO_DEVICE_IN_SPDIF), 110 STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_A2DP), 111 STRING_TO_ENUM(AUDIO_DEVICE_IN_LOOPBACK), 112}; 113 114const StringToEnum sFlagNameToEnumTable[] = { 115 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DIRECT), 116 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_PRIMARY), 117 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_FAST), 118 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DEEP_BUFFER), 119 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD), 120 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_NON_BLOCKING), 121 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_HW_AV_SYNC), 122}; 123 124const StringToEnum sFormatNameToEnumTable[] = { 125 STRING_TO_ENUM(AUDIO_FORMAT_PCM_16_BIT), 126 STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_BIT), 127 STRING_TO_ENUM(AUDIO_FORMAT_PCM_32_BIT), 128 STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_24_BIT), 129 STRING_TO_ENUM(AUDIO_FORMAT_PCM_FLOAT), 130 STRING_TO_ENUM(AUDIO_FORMAT_PCM_24_BIT_PACKED), 131 STRING_TO_ENUM(AUDIO_FORMAT_MP3), 132 STRING_TO_ENUM(AUDIO_FORMAT_AAC), 133 STRING_TO_ENUM(AUDIO_FORMAT_AAC_MAIN), 134 STRING_TO_ENUM(AUDIO_FORMAT_AAC_LC), 135 STRING_TO_ENUM(AUDIO_FORMAT_AAC_SSR), 136 STRING_TO_ENUM(AUDIO_FORMAT_AAC_LTP), 137 STRING_TO_ENUM(AUDIO_FORMAT_AAC_HE_V1), 138 STRING_TO_ENUM(AUDIO_FORMAT_AAC_SCALABLE), 139 STRING_TO_ENUM(AUDIO_FORMAT_AAC_ERLC), 140 STRING_TO_ENUM(AUDIO_FORMAT_AAC_LD), 141 STRING_TO_ENUM(AUDIO_FORMAT_AAC_HE_V2), 142 STRING_TO_ENUM(AUDIO_FORMAT_AAC_ELD), 143 STRING_TO_ENUM(AUDIO_FORMAT_VORBIS), 144 STRING_TO_ENUM(AUDIO_FORMAT_HE_AAC_V1), 145 STRING_TO_ENUM(AUDIO_FORMAT_HE_AAC_V2), 146 STRING_TO_ENUM(AUDIO_FORMAT_OPUS), 147 STRING_TO_ENUM(AUDIO_FORMAT_AC3), 148 STRING_TO_ENUM(AUDIO_FORMAT_E_AC3), 149}; 150 151const StringToEnum sOutChannelsNameToEnumTable[] = { 152 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_MONO), 153 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO), 154 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_QUAD), 155 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1), 156 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1), 157}; 158 159const StringToEnum sInChannelsNameToEnumTable[] = { 160 STRING_TO_ENUM(AUDIO_CHANNEL_IN_MONO), 161 STRING_TO_ENUM(AUDIO_CHANNEL_IN_STEREO), 162 STRING_TO_ENUM(AUDIO_CHANNEL_IN_FRONT_BACK), 163}; 164 165const StringToEnum sGainModeNameToEnumTable[] = { 166 STRING_TO_ENUM(AUDIO_GAIN_MODE_JOINT), 167 STRING_TO_ENUM(AUDIO_GAIN_MODE_CHANNELS), 168 STRING_TO_ENUM(AUDIO_GAIN_MODE_RAMP), 169}; 170 171 172uint32_t AudioPolicyManager::stringToEnum(const struct StringToEnum *table, 173 size_t size, 174 const char *name) 175{ 176 for (size_t i = 0; i < size; i++) { 177 if (strcmp(table[i].name, name) == 0) { 178 ALOGV("stringToEnum() found %s", table[i].name); 179 return table[i].value; 180 } 181 } 182 return 0; 183} 184 185const char *AudioPolicyManager::enumToString(const struct StringToEnum *table, 186 size_t size, 187 uint32_t value) 188{ 189 for (size_t i = 0; i < size; i++) { 190 if (table[i].value == value) { 191 return table[i].name; 192 } 193 } 194 return ""; 195} 196 197bool AudioPolicyManager::stringToBool(const char *value) 198{ 199 return ((strcasecmp("true", value) == 0) || (strcmp("1", value) == 0)); 200} 201 202 203// ---------------------------------------------------------------------------- 204// AudioPolicyInterface implementation 205// ---------------------------------------------------------------------------- 206 207 208status_t AudioPolicyManager::setDeviceConnectionState(audio_devices_t device, 209 audio_policy_dev_state_t state, 210 const char *device_address) 211{ 212 String8 address = (device_address == NULL) ? String8("") : String8(device_address); 213 214 ALOGV("setDeviceConnectionState() device: %x, state %d, address %s", 215 device, state, address.string()); 216 217 // connect/disconnect only 1 device at a time 218 if (!audio_is_output_device(device) && !audio_is_input_device(device)) return BAD_VALUE; 219 220 // handle output devices 221 if (audio_is_output_device(device)) { 222 SortedVector <audio_io_handle_t> outputs; 223 224 sp<DeviceDescriptor> devDesc = new DeviceDescriptor(String8(""), device); 225 devDesc->mAddress = address; 226 ssize_t index = mAvailableOutputDevices.indexOf(devDesc); 227 228 // save a copy of the opened output descriptors before any output is opened or closed 229 // by checkOutputsForDevice(). This will be needed by checkOutputForAllStrategies() 230 mPreviousOutputs = mOutputs; 231 switch (state) 232 { 233 // handle output device connection 234 case AUDIO_POLICY_DEVICE_STATE_AVAILABLE: 235 if (index >= 0) { 236 ALOGW("setDeviceConnectionState() device already connected: %x", device); 237 return INVALID_OPERATION; 238 } 239 ALOGV("setDeviceConnectionState() connecting device %x", device); 240 241 // register new device as available 242 index = mAvailableOutputDevices.add(devDesc); 243 if (index >= 0) { 244 sp<HwModule> module = getModuleForDevice(device); 245 if (module == 0) { 246 ALOGD("setDeviceConnectionState() could not find HW module for device %08x", 247 device); 248 mAvailableOutputDevices.remove(devDesc); 249 return INVALID_OPERATION; 250 } 251 mAvailableOutputDevices[index]->mId = nextUniqueId(); 252 mAvailableOutputDevices[index]->mModule = module; 253 } else { 254 return NO_MEMORY; 255 } 256 257 if (checkOutputsForDevice(devDesc, state, outputs, address) != NO_ERROR) { 258 mAvailableOutputDevices.remove(devDesc); 259 return INVALID_OPERATION; 260 } 261 // outputs should never be empty here 262 ALOG_ASSERT(outputs.size() != 0, "setDeviceConnectionState():" 263 "checkOutputsForDevice() returned no outputs but status OK"); 264 ALOGV("setDeviceConnectionState() checkOutputsForDevice() returned %zu outputs", 265 outputs.size()); 266 break; 267 // handle output device disconnection 268 case AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE: { 269 if (index < 0) { 270 ALOGW("setDeviceConnectionState() device not connected: %x", device); 271 return INVALID_OPERATION; 272 } 273 274 ALOGV("setDeviceConnectionState() disconnecting output device %x", device); 275 276 // Set Disconnect to HALs 277 AudioParameter param = AudioParameter(address); 278 param.addInt(String8(AUDIO_PARAMETER_DEVICE_DISCONNECT), device); 279 mpClientInterface->setParameters(AUDIO_IO_HANDLE_NONE, param.toString()); 280 281 // remove device from available output devices 282 mAvailableOutputDevices.remove(devDesc); 283 284 checkOutputsForDevice(devDesc, state, outputs, address); 285 } break; 286 287 default: 288 ALOGE("setDeviceConnectionState() invalid state: %x", state); 289 return BAD_VALUE; 290 } 291 292 // checkA2dpSuspend must run before checkOutputForAllStrategies so that A2DP 293 // output is suspended before any tracks are moved to it 294 checkA2dpSuspend(); 295 checkOutputForAllStrategies(); 296 // outputs must be closed after checkOutputForAllStrategies() is executed 297 if (!outputs.isEmpty()) { 298 for (size_t i = 0; i < outputs.size(); i++) { 299 sp<AudioOutputDescriptor> desc = mOutputs.valueFor(outputs[i]); 300 // close unused outputs after device disconnection or direct outputs that have been 301 // opened by checkOutputsForDevice() to query dynamic parameters 302 if ((state == AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE) || 303 (((desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) != 0) && 304 (desc->mDirectOpenCount == 0))) { 305 closeOutput(outputs[i]); 306 } 307 } 308 // check again after closing A2DP output to reset mA2dpSuspended if needed 309 checkA2dpSuspend(); 310 } 311 312 updateDevicesAndOutputs(); 313 if (mPhoneState == AUDIO_MODE_IN_CALL) { 314 audio_devices_t newDevice = getNewOutputDevice(mPrimaryOutput, false /*fromCache*/); 315 updateCallRouting(newDevice); 316 } 317 for (size_t i = 0; i < mOutputs.size(); i++) { 318 audio_io_handle_t output = mOutputs.keyAt(i); 319 if ((mPhoneState != AUDIO_MODE_IN_CALL) || (output != mPrimaryOutput)) { 320 audio_devices_t newDevice = getNewOutputDevice(mOutputs.keyAt(i), 321 true /*fromCache*/); 322 // do not force device change on duplicated output because if device is 0, it will 323 // also force a device 0 for the two outputs it is duplicated to which may override 324 // a valid device selection on those outputs. 325 bool force = !mOutputs.valueAt(i)->isDuplicated() 326 && (!deviceDistinguishesOnAddress(device) 327 // always force when disconnecting (a non-duplicated device) 328 || (state == AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE)); 329 setOutputDevice(output, newDevice, force, 0); 330 } 331 } 332 333 mpClientInterface->onAudioPortListUpdate(); 334 return NO_ERROR; 335 } // end if is output device 336 337 // handle input devices 338 if (audio_is_input_device(device)) { 339 SortedVector <audio_io_handle_t> inputs; 340 341 sp<DeviceDescriptor> devDesc = new DeviceDescriptor(String8(""), device); 342 devDesc->mAddress = address; 343 ssize_t index = mAvailableInputDevices.indexOf(devDesc); 344 switch (state) 345 { 346 // handle input device connection 347 case AUDIO_POLICY_DEVICE_STATE_AVAILABLE: { 348 if (index >= 0) { 349 ALOGW("setDeviceConnectionState() device already connected: %d", device); 350 return INVALID_OPERATION; 351 } 352 sp<HwModule> module = getModuleForDevice(device); 353 if (module == NULL) { 354 ALOGW("setDeviceConnectionState(): could not find HW module for device %08x", 355 device); 356 return INVALID_OPERATION; 357 } 358 if (checkInputsForDevice(device, state, inputs, address) != NO_ERROR) { 359 return INVALID_OPERATION; 360 } 361 362 index = mAvailableInputDevices.add(devDesc); 363 if (index >= 0) { 364 mAvailableInputDevices[index]->mId = nextUniqueId(); 365 mAvailableInputDevices[index]->mModule = module; 366 } else { 367 return NO_MEMORY; 368 } 369 } break; 370 371 // handle input device disconnection 372 case AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE: { 373 if (index < 0) { 374 ALOGW("setDeviceConnectionState() device not connected: %d", device); 375 return INVALID_OPERATION; 376 } 377 378 ALOGV("setDeviceConnectionState() disconnecting input device %x", device); 379 380 // Set Disconnect to HALs 381 AudioParameter param = AudioParameter(address); 382 param.addInt(String8(AUDIO_PARAMETER_DEVICE_DISCONNECT), device); 383 mpClientInterface->setParameters(AUDIO_IO_HANDLE_NONE, param.toString()); 384 385 checkInputsForDevice(device, state, inputs, address); 386 mAvailableInputDevices.remove(devDesc); 387 388 } break; 389 390 default: 391 ALOGE("setDeviceConnectionState() invalid state: %x", state); 392 return BAD_VALUE; 393 } 394 395 closeAllInputs(); 396 397 if (mPhoneState == AUDIO_MODE_IN_CALL) { 398 audio_devices_t newDevice = getNewOutputDevice(mPrimaryOutput, false /*fromCache*/); 399 updateCallRouting(newDevice); 400 } 401 402 mpClientInterface->onAudioPortListUpdate(); 403 return NO_ERROR; 404 } // end if is input device 405 406 ALOGW("setDeviceConnectionState() invalid device: %x", device); 407 return BAD_VALUE; 408} 409 410audio_policy_dev_state_t AudioPolicyManager::getDeviceConnectionState(audio_devices_t device, 411 const char *device_address) 412{ 413 audio_policy_dev_state_t state = AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 414 sp<DeviceDescriptor> devDesc = new DeviceDescriptor(String8(""), device); 415 devDesc->mAddress = (device_address == NULL) ? String8("") : String8(device_address); 416 ssize_t index; 417 DeviceVector *deviceVector; 418 419 if (audio_is_output_device(device)) { 420 deviceVector = &mAvailableOutputDevices; 421 } else if (audio_is_input_device(device)) { 422 deviceVector = &mAvailableInputDevices; 423 } else { 424 ALOGW("getDeviceConnectionState() invalid device type %08x", device); 425 return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 426 } 427 428 index = deviceVector->indexOf(devDesc); 429 if (index >= 0) { 430 return AUDIO_POLICY_DEVICE_STATE_AVAILABLE; 431 } else { 432 return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 433 } 434} 435 436void AudioPolicyManager::updateCallRouting(audio_devices_t rxDevice, int delayMs) 437{ 438 bool createTxPatch = false; 439 struct audio_patch patch; 440 patch.num_sources = 1; 441 patch.num_sinks = 1; 442 status_t status; 443 audio_patch_handle_t afPatchHandle; 444 DeviceVector deviceList; 445 446 audio_devices_t txDevice = getDeviceForInputSource(AUDIO_SOURCE_VOICE_COMMUNICATION); 447 ALOGV("updateCallRouting device rxDevice %08x txDevice %08x", rxDevice, txDevice); 448 449 // release existing RX patch if any 450 if (mCallRxPatch != 0) { 451 mpClientInterface->releaseAudioPatch(mCallRxPatch->mAfPatchHandle, 0); 452 mCallRxPatch.clear(); 453 } 454 // release TX patch if any 455 if (mCallTxPatch != 0) { 456 mpClientInterface->releaseAudioPatch(mCallTxPatch->mAfPatchHandle, 0); 457 mCallTxPatch.clear(); 458 } 459 460 // If the RX device is on the primary HW module, then use legacy routing method for voice calls 461 // via setOutputDevice() on primary output. 462 // Otherwise, create two audio patches for TX and RX path. 463 if (availablePrimaryOutputDevices() & rxDevice) { 464 setOutputDevice(mPrimaryOutput, rxDevice, true, delayMs); 465 // If the TX device is also on the primary HW module, setOutputDevice() will take care 466 // of it due to legacy implementation. If not, create a patch. 467 if ((availablePrimaryInputDevices() & txDevice & ~AUDIO_DEVICE_BIT_IN) 468 == AUDIO_DEVICE_NONE) { 469 createTxPatch = true; 470 } 471 } else { 472 // create RX path audio patch 473 deviceList = mAvailableOutputDevices.getDevicesFromType(rxDevice); 474 ALOG_ASSERT(!deviceList.isEmpty(), 475 "updateCallRouting() selected device not in output device list"); 476 sp<DeviceDescriptor> rxSinkDeviceDesc = deviceList.itemAt(0); 477 deviceList = mAvailableInputDevices.getDevicesFromType(AUDIO_DEVICE_IN_TELEPHONY_RX); 478 ALOG_ASSERT(!deviceList.isEmpty(), 479 "updateCallRouting() no telephony RX device"); 480 sp<DeviceDescriptor> rxSourceDeviceDesc = deviceList.itemAt(0); 481 482 rxSourceDeviceDesc->toAudioPortConfig(&patch.sources[0]); 483 rxSinkDeviceDesc->toAudioPortConfig(&patch.sinks[0]); 484 485 // request to reuse existing output stream if one is already opened to reach the RX device 486 SortedVector<audio_io_handle_t> outputs = 487 getOutputsForDevice(rxDevice, mOutputs); 488 audio_io_handle_t output = selectOutput(outputs, AUDIO_OUTPUT_FLAG_NONE); 489 if (output != AUDIO_IO_HANDLE_NONE) { 490 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 491 ALOG_ASSERT(!outputDesc->isDuplicated(), 492 "updateCallRouting() RX device output is duplicated"); 493 outputDesc->toAudioPortConfig(&patch.sources[1]); 494 patch.num_sources = 2; 495 } 496 497 afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 498 status = mpClientInterface->createAudioPatch(&patch, &afPatchHandle, 0); 499 ALOGW_IF(status != NO_ERROR, "updateCallRouting() error %d creating RX audio patch", 500 status); 501 if (status == NO_ERROR) { 502 mCallRxPatch = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 503 &patch, mUidCached); 504 mCallRxPatch->mAfPatchHandle = afPatchHandle; 505 mCallRxPatch->mUid = mUidCached; 506 } 507 createTxPatch = true; 508 } 509 if (createTxPatch) { 510 511 struct audio_patch patch; 512 patch.num_sources = 1; 513 patch.num_sinks = 1; 514 deviceList = mAvailableInputDevices.getDevicesFromType(txDevice); 515 ALOG_ASSERT(!deviceList.isEmpty(), 516 "updateCallRouting() selected device not in input device list"); 517 sp<DeviceDescriptor> txSourceDeviceDesc = deviceList.itemAt(0); 518 txSourceDeviceDesc->toAudioPortConfig(&patch.sources[0]); 519 deviceList = mAvailableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_TELEPHONY_TX); 520 ALOG_ASSERT(!deviceList.isEmpty(), 521 "updateCallRouting() no telephony TX device"); 522 sp<DeviceDescriptor> txSinkDeviceDesc = deviceList.itemAt(0); 523 txSinkDeviceDesc->toAudioPortConfig(&patch.sinks[0]); 524 525 SortedVector<audio_io_handle_t> outputs = 526 getOutputsForDevice(AUDIO_DEVICE_OUT_TELEPHONY_TX, mOutputs); 527 audio_io_handle_t output = selectOutput(outputs, AUDIO_OUTPUT_FLAG_NONE); 528 // request to reuse existing output stream if one is already opened to reach the TX 529 // path output device 530 if (output != AUDIO_IO_HANDLE_NONE) { 531 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 532 ALOG_ASSERT(!outputDesc->isDuplicated(), 533 "updateCallRouting() RX device output is duplicated"); 534 outputDesc->toAudioPortConfig(&patch.sources[1]); 535 patch.num_sources = 2; 536 } 537 538 afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 539 status = mpClientInterface->createAudioPatch(&patch, &afPatchHandle, 0); 540 ALOGW_IF(status != NO_ERROR, "setPhoneState() error %d creating TX audio patch", 541 status); 542 if (status == NO_ERROR) { 543 mCallTxPatch = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 544 &patch, mUidCached); 545 mCallTxPatch->mAfPatchHandle = afPatchHandle; 546 mCallTxPatch->mUid = mUidCached; 547 } 548 } 549} 550 551void AudioPolicyManager::setPhoneState(audio_mode_t state) 552{ 553 ALOGV("setPhoneState() state %d", state); 554 if (state < 0 || state >= AUDIO_MODE_CNT) { 555 ALOGW("setPhoneState() invalid state %d", state); 556 return; 557 } 558 559 if (state == mPhoneState ) { 560 ALOGW("setPhoneState() setting same state %d", state); 561 return; 562 } 563 564 // if leaving call state, handle special case of active streams 565 // pertaining to sonification strategy see handleIncallSonification() 566 if (isInCall()) { 567 ALOGV("setPhoneState() in call state management: new state is %d", state); 568 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 569 handleIncallSonification((audio_stream_type_t)stream, false, true); 570 } 571 } 572 573 // store previous phone state for management of sonification strategy below 574 int oldState = mPhoneState; 575 mPhoneState = state; 576 bool force = false; 577 578 // are we entering or starting a call 579 if (!isStateInCall(oldState) && isStateInCall(state)) { 580 ALOGV(" Entering call in setPhoneState()"); 581 // force routing command to audio hardware when starting a call 582 // even if no device change is needed 583 force = true; 584 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { 585 mStreams[AUDIO_STREAM_DTMF].mVolumeCurve[j] = 586 sVolumeProfiles[AUDIO_STREAM_VOICE_CALL][j]; 587 } 588 } else if (isStateInCall(oldState) && !isStateInCall(state)) { 589 ALOGV(" Exiting call in setPhoneState()"); 590 // force routing command to audio hardware when exiting a call 591 // even if no device change is needed 592 force = true; 593 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { 594 mStreams[AUDIO_STREAM_DTMF].mVolumeCurve[j] = 595 sVolumeProfiles[AUDIO_STREAM_DTMF][j]; 596 } 597 } else if (isStateInCall(state) && (state != oldState)) { 598 ALOGV(" Switching between telephony and VoIP in setPhoneState()"); 599 // force routing command to audio hardware when switching between telephony and VoIP 600 // even if no device change is needed 601 force = true; 602 } 603 604 // check for device and output changes triggered by new phone state 605 checkA2dpSuspend(); 606 checkOutputForAllStrategies(); 607 updateDevicesAndOutputs(); 608 609 sp<AudioOutputDescriptor> hwOutputDesc = mOutputs.valueFor(mPrimaryOutput); 610 611 int delayMs = 0; 612 if (isStateInCall(state)) { 613 nsecs_t sysTime = systemTime(); 614 for (size_t i = 0; i < mOutputs.size(); i++) { 615 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 616 // mute media and sonification strategies and delay device switch by the largest 617 // latency of any output where either strategy is active. 618 // This avoid sending the ring tone or music tail into the earpiece or headset. 619 if ((desc->isStrategyActive(STRATEGY_MEDIA, 620 SONIFICATION_HEADSET_MUSIC_DELAY, 621 sysTime) || 622 desc->isStrategyActive(STRATEGY_SONIFICATION, 623 SONIFICATION_HEADSET_MUSIC_DELAY, 624 sysTime)) && 625 (delayMs < (int)desc->mLatency*2)) { 626 delayMs = desc->mLatency*2; 627 } 628 setStrategyMute(STRATEGY_MEDIA, true, mOutputs.keyAt(i)); 629 setStrategyMute(STRATEGY_MEDIA, false, mOutputs.keyAt(i), MUTE_TIME_MS, 630 getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/)); 631 setStrategyMute(STRATEGY_SONIFICATION, true, mOutputs.keyAt(i)); 632 setStrategyMute(STRATEGY_SONIFICATION, false, mOutputs.keyAt(i), MUTE_TIME_MS, 633 getDeviceForStrategy(STRATEGY_SONIFICATION, true /*fromCache*/)); 634 } 635 } 636 637 // Note that despite the fact that getNewOutputDevice() is called on the primary output, 638 // the device returned is not necessarily reachable via this output 639 audio_devices_t rxDevice = getNewOutputDevice(mPrimaryOutput, false /*fromCache*/); 640 // force routing command to audio hardware when ending call 641 // even if no device change is needed 642 if (isStateInCall(oldState) && rxDevice == AUDIO_DEVICE_NONE) { 643 rxDevice = hwOutputDesc->device(); 644 } 645 646 if (state == AUDIO_MODE_IN_CALL) { 647 updateCallRouting(rxDevice, delayMs); 648 } else if (oldState == AUDIO_MODE_IN_CALL) { 649 if (mCallRxPatch != 0) { 650 mpClientInterface->releaseAudioPatch(mCallRxPatch->mAfPatchHandle, 0); 651 mCallRxPatch.clear(); 652 } 653 if (mCallTxPatch != 0) { 654 mpClientInterface->releaseAudioPatch(mCallTxPatch->mAfPatchHandle, 0); 655 mCallTxPatch.clear(); 656 } 657 setOutputDevice(mPrimaryOutput, rxDevice, force, 0); 658 } else { 659 setOutputDevice(mPrimaryOutput, rxDevice, force, 0); 660 } 661 // if entering in call state, handle special case of active streams 662 // pertaining to sonification strategy see handleIncallSonification() 663 if (isStateInCall(state)) { 664 ALOGV("setPhoneState() in call state management: new state is %d", state); 665 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 666 handleIncallSonification((audio_stream_type_t)stream, true, true); 667 } 668 } 669 670 // Flag that ringtone volume must be limited to music volume until we exit MODE_RINGTONE 671 if (state == AUDIO_MODE_RINGTONE && 672 isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY)) { 673 mLimitRingtoneVolume = true; 674 } else { 675 mLimitRingtoneVolume = false; 676 } 677} 678 679void AudioPolicyManager::setForceUse(audio_policy_force_use_t usage, 680 audio_policy_forced_cfg_t config) 681{ 682 ALOGV("setForceUse() usage %d, config %d, mPhoneState %d", usage, config, mPhoneState); 683 684 bool forceVolumeReeval = false; 685 switch(usage) { 686 case AUDIO_POLICY_FORCE_FOR_COMMUNICATION: 687 if (config != AUDIO_POLICY_FORCE_SPEAKER && config != AUDIO_POLICY_FORCE_BT_SCO && 688 config != AUDIO_POLICY_FORCE_NONE) { 689 ALOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config); 690 return; 691 } 692 forceVolumeReeval = true; 693 mForceUse[usage] = config; 694 break; 695 case AUDIO_POLICY_FORCE_FOR_MEDIA: 696 if (config != AUDIO_POLICY_FORCE_HEADPHONES && config != AUDIO_POLICY_FORCE_BT_A2DP && 697 config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && 698 config != AUDIO_POLICY_FORCE_ANALOG_DOCK && 699 config != AUDIO_POLICY_FORCE_DIGITAL_DOCK && config != AUDIO_POLICY_FORCE_NONE && 700 config != AUDIO_POLICY_FORCE_NO_BT_A2DP) { 701 ALOGW("setForceUse() invalid config %d for FOR_MEDIA", config); 702 return; 703 } 704 mForceUse[usage] = config; 705 break; 706 case AUDIO_POLICY_FORCE_FOR_RECORD: 707 if (config != AUDIO_POLICY_FORCE_BT_SCO && config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && 708 config != AUDIO_POLICY_FORCE_NONE) { 709 ALOGW("setForceUse() invalid config %d for FOR_RECORD", config); 710 return; 711 } 712 mForceUse[usage] = config; 713 break; 714 case AUDIO_POLICY_FORCE_FOR_DOCK: 715 if (config != AUDIO_POLICY_FORCE_NONE && config != AUDIO_POLICY_FORCE_BT_CAR_DOCK && 716 config != AUDIO_POLICY_FORCE_BT_DESK_DOCK && 717 config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && 718 config != AUDIO_POLICY_FORCE_ANALOG_DOCK && 719 config != AUDIO_POLICY_FORCE_DIGITAL_DOCK) { 720 ALOGW("setForceUse() invalid config %d for FOR_DOCK", config); 721 } 722 forceVolumeReeval = true; 723 mForceUse[usage] = config; 724 break; 725 case AUDIO_POLICY_FORCE_FOR_SYSTEM: 726 if (config != AUDIO_POLICY_FORCE_NONE && 727 config != AUDIO_POLICY_FORCE_SYSTEM_ENFORCED) { 728 ALOGW("setForceUse() invalid config %d for FOR_SYSTEM", config); 729 } 730 forceVolumeReeval = true; 731 mForceUse[usage] = config; 732 break; 733 case AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO: 734 if (config != AUDIO_POLICY_FORCE_NONE && 735 config != AUDIO_POLICY_FORCE_HDMI_SYSTEM_AUDIO_ENFORCED) { 736 ALOGW("setForceUse() invalid config %d forHDMI_SYSTEM_AUDIO", config); 737 } 738 mForceUse[usage] = config; 739 break; 740 default: 741 ALOGW("setForceUse() invalid usage %d", usage); 742 break; 743 } 744 745 // check for device and output changes triggered by new force usage 746 checkA2dpSuspend(); 747 checkOutputForAllStrategies(); 748 updateDevicesAndOutputs(); 749 if (mPhoneState == AUDIO_MODE_IN_CALL) { 750 audio_devices_t newDevice = getNewOutputDevice(mPrimaryOutput, true /*fromCache*/); 751 updateCallRouting(newDevice); 752 } 753 for (size_t i = 0; i < mOutputs.size(); i++) { 754 audio_io_handle_t output = mOutputs.keyAt(i); 755 audio_devices_t newDevice = getNewOutputDevice(output, true /*fromCache*/); 756 if ((mPhoneState != AUDIO_MODE_IN_CALL) || (output != mPrimaryOutput)) { 757 setOutputDevice(output, newDevice, (newDevice != AUDIO_DEVICE_NONE)); 758 } 759 if (forceVolumeReeval && (newDevice != AUDIO_DEVICE_NONE)) { 760 applyStreamVolumes(output, newDevice, 0, true); 761 } 762 } 763 764 audio_io_handle_t activeInput = getActiveInput(); 765 if (activeInput != 0) { 766 setInputDevice(activeInput, getNewInputDevice(activeInput)); 767 } 768 769} 770 771audio_policy_forced_cfg_t AudioPolicyManager::getForceUse(audio_policy_force_use_t usage) 772{ 773 return mForceUse[usage]; 774} 775 776void AudioPolicyManager::setSystemProperty(const char* property, const char* value) 777{ 778 ALOGV("setSystemProperty() property %s, value %s", property, value); 779} 780 781// Find a direct output profile compatible with the parameters passed, even if the input flags do 782// not explicitly request a direct output 783sp<AudioPolicyManager::IOProfile> AudioPolicyManager::getProfileForDirectOutput( 784 audio_devices_t device, 785 uint32_t samplingRate, 786 audio_format_t format, 787 audio_channel_mask_t channelMask, 788 audio_output_flags_t flags) 789{ 790 for (size_t i = 0; i < mHwModules.size(); i++) { 791 if (mHwModules[i]->mHandle == 0) { 792 continue; 793 } 794 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) { 795 sp<IOProfile> profile = mHwModules[i]->mOutputProfiles[j]; 796 bool found = profile->isCompatibleProfile(device, samplingRate, 797 NULL /*updatedSamplingRate*/, format, channelMask, 798 flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD ? 799 AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD : AUDIO_OUTPUT_FLAG_DIRECT); 800 if (found && (mAvailableOutputDevices.types() & profile->mSupportedDevices.types())) { 801 return profile; 802 } 803 } 804 } 805 return 0; 806} 807 808audio_io_handle_t AudioPolicyManager::getOutput(audio_stream_type_t stream, 809 uint32_t samplingRate, 810 audio_format_t format, 811 audio_channel_mask_t channelMask, 812 audio_output_flags_t flags, 813 const audio_offload_info_t *offloadInfo) 814{ 815 816 routing_strategy strategy = getStrategy(stream); 817 audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/); 818 ALOGV("getOutput() device %d, stream %d, samplingRate %d, format %x, channelMask %x, flags %x", 819 device, stream, samplingRate, format, channelMask, flags); 820 821 return getOutputForDevice(device, stream, samplingRate,format, channelMask, flags, 822 offloadInfo); 823} 824 825audio_io_handle_t AudioPolicyManager::getOutputForAttr(const audio_attributes_t *attr, 826 uint32_t samplingRate, 827 audio_format_t format, 828 audio_channel_mask_t channelMask, 829 audio_output_flags_t flags, 830 const audio_offload_info_t *offloadInfo) 831{ 832 if (attr == NULL) { 833 ALOGE("getOutputForAttr() called with NULL audio attributes"); 834 return 0; 835 } 836 ALOGV("getOutputForAttr() usage=%d, content=%d, tag=%s flags=%08x", 837 attr->usage, attr->content_type, attr->tags, attr->flags); 838 839 // TODO this is where filtering for custom policies (rerouting, dynamic sources) will go 840 routing_strategy strategy = (routing_strategy) getStrategyForAttr(attr); 841 audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/); 842 843 if ((attr->flags & AUDIO_FLAG_HW_AV_SYNC) != 0) { 844 flags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_HW_AV_SYNC); 845 } 846 847 ALOGV("getOutputForAttr() device %d, samplingRate %d, format %x, channelMask %x, flags %x", 848 device, samplingRate, format, channelMask, flags); 849 850 audio_stream_type_t stream = streamTypefromAttributesInt(attr); 851 return getOutputForDevice(device, stream, samplingRate, format, channelMask, flags, 852 offloadInfo); 853} 854 855audio_io_handle_t AudioPolicyManager::getOutputForDevice( 856 audio_devices_t device, 857 audio_stream_type_t stream, 858 uint32_t samplingRate, 859 audio_format_t format, 860 audio_channel_mask_t channelMask, 861 audio_output_flags_t flags, 862 const audio_offload_info_t *offloadInfo) 863{ 864 audio_io_handle_t output = AUDIO_IO_HANDLE_NONE; 865 uint32_t latency = 0; 866 status_t status; 867 868#ifdef AUDIO_POLICY_TEST 869 if (mCurOutput != 0) { 870 ALOGV("getOutput() test output mCurOutput %d, samplingRate %d, format %d, channelMask %x, mDirectOutput %d", 871 mCurOutput, mTestSamplingRate, mTestFormat, mTestChannels, mDirectOutput); 872 873 if (mTestOutputs[mCurOutput] == 0) { 874 ALOGV("getOutput() opening test output"); 875 sp<AudioOutputDescriptor> outputDesc = new AudioOutputDescriptor(NULL); 876 outputDesc->mDevice = mTestDevice; 877 outputDesc->mLatency = mTestLatencyMs; 878 outputDesc->mFlags = 879 (audio_output_flags_t)(mDirectOutput ? AUDIO_OUTPUT_FLAG_DIRECT : 0); 880 outputDesc->mRefCount[stream] = 0; 881 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 882 config.sample_rate = mTestSamplingRate; 883 config.channel_mask = mTestChannels; 884 config.format = mTestFormat; 885 if (offloadInfo != NULL) { 886 config.offload_info = *offloadInfo; 887 } 888 status = mpClientInterface->openOutput(0, 889 &mTestOutputs[mCurOutput], 890 &config, 891 &outputDesc->mDevice, 892 String8(""), 893 &outputDesc->mLatency, 894 outputDesc->mFlags); 895 if (status == NO_ERROR) { 896 outputDesc->mSamplingRate = config.sample_rate; 897 outputDesc->mFormat = config.format; 898 outputDesc->mChannelMask = config.channel_mask; 899 AudioParameter outputCmd = AudioParameter(); 900 outputCmd.addInt(String8("set_id"),mCurOutput); 901 mpClientInterface->setParameters(mTestOutputs[mCurOutput],outputCmd.toString()); 902 addOutput(mTestOutputs[mCurOutput], outputDesc); 903 } 904 } 905 return mTestOutputs[mCurOutput]; 906 } 907#endif //AUDIO_POLICY_TEST 908 909 // open a direct output if required by specified parameters 910 //force direct flag if offload flag is set: offloading implies a direct output stream 911 // and all common behaviors are driven by checking only the direct flag 912 // this should normally be set appropriately in the policy configuration file 913 if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) { 914 flags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_DIRECT); 915 } 916 if ((flags & AUDIO_OUTPUT_FLAG_HW_AV_SYNC) != 0) { 917 flags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_DIRECT); 918 } 919 920 // Do not allow offloading if one non offloadable effect is enabled. This prevents from 921 // creating an offloaded track and tearing it down immediately after start when audioflinger 922 // detects there is an active non offloadable effect. 923 // FIXME: We should check the audio session here but we do not have it in this context. 924 // This may prevent offloading in rare situations where effects are left active by apps 925 // in the background. 926 sp<IOProfile> profile; 927 if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) || 928 !isNonOffloadableEffectEnabled()) { 929 profile = getProfileForDirectOutput(device, 930 samplingRate, 931 format, 932 channelMask, 933 (audio_output_flags_t)flags); 934 } 935 936 if (profile != 0) { 937 sp<AudioOutputDescriptor> outputDesc = NULL; 938 939 for (size_t i = 0; i < mOutputs.size(); i++) { 940 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 941 if (!desc->isDuplicated() && (profile == desc->mProfile)) { 942 outputDesc = desc; 943 // reuse direct output if currently open and configured with same parameters 944 if ((samplingRate == outputDesc->mSamplingRate) && 945 (format == outputDesc->mFormat) && 946 (channelMask == outputDesc->mChannelMask)) { 947 outputDesc->mDirectOpenCount++; 948 ALOGV("getOutput() reusing direct output %d", mOutputs.keyAt(i)); 949 return mOutputs.keyAt(i); 950 } 951 } 952 } 953 // close direct output if currently open and configured with different parameters 954 if (outputDesc != NULL) { 955 closeOutput(outputDesc->mIoHandle); 956 } 957 outputDesc = new AudioOutputDescriptor(profile); 958 outputDesc->mDevice = device; 959 outputDesc->mLatency = 0; 960 outputDesc->mFlags =(audio_output_flags_t) (outputDesc->mFlags | flags); 961 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 962 config.sample_rate = samplingRate; 963 config.channel_mask = channelMask; 964 config.format = format; 965 if (offloadInfo != NULL) { 966 config.offload_info = *offloadInfo; 967 } 968 status = mpClientInterface->openOutput(profile->mModule->mHandle, 969 &output, 970 &config, 971 &outputDesc->mDevice, 972 String8(""), 973 &outputDesc->mLatency, 974 outputDesc->mFlags); 975 976 // only accept an output with the requested parameters 977 if (status != NO_ERROR || 978 (samplingRate != 0 && samplingRate != config.sample_rate) || 979 (format != AUDIO_FORMAT_DEFAULT && format != config.format) || 980 (channelMask != 0 && channelMask != config.channel_mask)) { 981 ALOGV("getOutput() failed opening direct output: output %d samplingRate %d %d," 982 "format %d %d, channelMask %04x %04x", output, samplingRate, 983 outputDesc->mSamplingRate, format, outputDesc->mFormat, channelMask, 984 outputDesc->mChannelMask); 985 if (output != AUDIO_IO_HANDLE_NONE) { 986 mpClientInterface->closeOutput(output); 987 } 988 return AUDIO_IO_HANDLE_NONE; 989 } 990 outputDesc->mSamplingRate = config.sample_rate; 991 outputDesc->mChannelMask = config.channel_mask; 992 outputDesc->mFormat = config.format; 993 outputDesc->mRefCount[stream] = 0; 994 outputDesc->mStopTime[stream] = 0; 995 outputDesc->mDirectOpenCount = 1; 996 997 audio_io_handle_t srcOutput = getOutputForEffect(); 998 addOutput(output, outputDesc); 999 audio_io_handle_t dstOutput = getOutputForEffect(); 1000 if (dstOutput == output) { 1001 mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, srcOutput, dstOutput); 1002 } 1003 mPreviousOutputs = mOutputs; 1004 ALOGV("getOutput() returns new direct output %d", output); 1005 mpClientInterface->onAudioPortListUpdate(); 1006 return output; 1007 } 1008 1009 // ignoring channel mask due to downmix capability in mixer 1010 1011 // open a non direct output 1012 1013 // for non direct outputs, only PCM is supported 1014 if (audio_is_linear_pcm(format)) { 1015 // get which output is suitable for the specified stream. The actual 1016 // routing change will happen when startOutput() will be called 1017 SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(device, mOutputs); 1018 1019 output = selectOutput(outputs, flags); 1020 } 1021 ALOGW_IF((output == 0), "getOutput() could not find output for stream %d, samplingRate %d," 1022 "format %d, channels %x, flags %x", stream, samplingRate, format, channelMask, flags); 1023 1024 ALOGV("getOutput() returns output %d", output); 1025 1026 return output; 1027} 1028 1029audio_io_handle_t AudioPolicyManager::selectOutput(const SortedVector<audio_io_handle_t>& outputs, 1030 audio_output_flags_t flags) 1031{ 1032 // select one output among several that provide a path to a particular device or set of 1033 // devices (the list was previously build by getOutputsForDevice()). 1034 // The priority is as follows: 1035 // 1: the output with the highest number of requested policy flags 1036 // 2: the primary output 1037 // 3: the first output in the list 1038 1039 if (outputs.size() == 0) { 1040 return 0; 1041 } 1042 if (outputs.size() == 1) { 1043 return outputs[0]; 1044 } 1045 1046 int maxCommonFlags = 0; 1047 audio_io_handle_t outputFlags = 0; 1048 audio_io_handle_t outputPrimary = 0; 1049 1050 for (size_t i = 0; i < outputs.size(); i++) { 1051 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(outputs[i]); 1052 if (!outputDesc->isDuplicated()) { 1053 int commonFlags = popcount(outputDesc->mProfile->mFlags & flags); 1054 if (commonFlags > maxCommonFlags) { 1055 outputFlags = outputs[i]; 1056 maxCommonFlags = commonFlags; 1057 ALOGV("selectOutput() commonFlags for output %d, %04x", outputs[i], commonFlags); 1058 } 1059 if (outputDesc->mProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) { 1060 outputPrimary = outputs[i]; 1061 } 1062 } 1063 } 1064 1065 if (outputFlags != 0) { 1066 return outputFlags; 1067 } 1068 if (outputPrimary != 0) { 1069 return outputPrimary; 1070 } 1071 1072 return outputs[0]; 1073} 1074 1075status_t AudioPolicyManager::startOutput(audio_io_handle_t output, 1076 audio_stream_type_t stream, 1077 int session) 1078{ 1079 ALOGV("startOutput() output %d, stream %d, session %d", output, stream, session); 1080 ssize_t index = mOutputs.indexOfKey(output); 1081 if (index < 0) { 1082 ALOGW("startOutput() unknown output %d", output); 1083 return BAD_VALUE; 1084 } 1085 1086 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(index); 1087 1088 // increment usage count for this stream on the requested output: 1089 // NOTE that the usage count is the same for duplicated output and hardware output which is 1090 // necessary for a correct control of hardware output routing by startOutput() and stopOutput() 1091 outputDesc->changeRefCount(stream, 1); 1092 1093 if (outputDesc->mRefCount[stream] == 1) { 1094 audio_devices_t newDevice = getNewOutputDevice(output, false /*fromCache*/); 1095 routing_strategy strategy = getStrategy(stream); 1096 bool shouldWait = (strategy == STRATEGY_SONIFICATION) || 1097 (strategy == STRATEGY_SONIFICATION_RESPECTFUL); 1098 uint32_t waitMs = 0; 1099 bool force = false; 1100 for (size_t i = 0; i < mOutputs.size(); i++) { 1101 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 1102 if (desc != outputDesc) { 1103 // force a device change if any other output is managed by the same hw 1104 // module and has a current device selection that differs from selected device. 1105 // In this case, the audio HAL must receive the new device selection so that it can 1106 // change the device currently selected by the other active output. 1107 if (outputDesc->sharesHwModuleWith(desc) && 1108 desc->device() != newDevice) { 1109 force = true; 1110 } 1111 // wait for audio on other active outputs to be presented when starting 1112 // a notification so that audio focus effect can propagate. 1113 uint32_t latency = desc->latency(); 1114 if (shouldWait && desc->isActive(latency * 2) && (waitMs < latency)) { 1115 waitMs = latency; 1116 } 1117 } 1118 } 1119 uint32_t muteWaitMs = setOutputDevice(output, newDevice, force); 1120 1121 // handle special case for sonification while in call 1122 if (isInCall()) { 1123 handleIncallSonification(stream, true, false); 1124 } 1125 1126 // apply volume rules for current stream and device if necessary 1127 checkAndSetVolume(stream, 1128 mStreams[stream].getVolumeIndex(newDevice), 1129 output, 1130 newDevice); 1131 1132 // update the outputs if starting an output with a stream that can affect notification 1133 // routing 1134 handleNotificationRoutingForStream(stream); 1135 if (waitMs > muteWaitMs) { 1136 usleep((waitMs - muteWaitMs) * 2 * 1000); 1137 } 1138 } 1139 return NO_ERROR; 1140} 1141 1142 1143status_t AudioPolicyManager::stopOutput(audio_io_handle_t output, 1144 audio_stream_type_t stream, 1145 int session) 1146{ 1147 ALOGV("stopOutput() output %d, stream %d, session %d", output, stream, session); 1148 ssize_t index = mOutputs.indexOfKey(output); 1149 if (index < 0) { 1150 ALOGW("stopOutput() unknown output %d", output); 1151 return BAD_VALUE; 1152 } 1153 1154 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(index); 1155 1156 // handle special case for sonification while in call 1157 if (isInCall()) { 1158 handleIncallSonification(stream, false, false); 1159 } 1160 1161 if (outputDesc->mRefCount[stream] > 0) { 1162 // decrement usage count of this stream on the output 1163 outputDesc->changeRefCount(stream, -1); 1164 // store time at which the stream was stopped - see isStreamActive() 1165 if (outputDesc->mRefCount[stream] == 0) { 1166 outputDesc->mStopTime[stream] = systemTime(); 1167 audio_devices_t newDevice = getNewOutputDevice(output, false /*fromCache*/); 1168 // delay the device switch by twice the latency because stopOutput() is executed when 1169 // the track stop() command is received and at that time the audio track buffer can 1170 // still contain data that needs to be drained. The latency only covers the audio HAL 1171 // and kernel buffers. Also the latency does not always include additional delay in the 1172 // audio path (audio DSP, CODEC ...) 1173 setOutputDevice(output, newDevice, false, outputDesc->mLatency*2); 1174 1175 // force restoring the device selection on other active outputs if it differs from the 1176 // one being selected for this output 1177 for (size_t i = 0; i < mOutputs.size(); i++) { 1178 audio_io_handle_t curOutput = mOutputs.keyAt(i); 1179 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i); 1180 if (curOutput != output && 1181 desc->isActive() && 1182 outputDesc->sharesHwModuleWith(desc) && 1183 (newDevice != desc->device())) { 1184 setOutputDevice(curOutput, 1185 getNewOutputDevice(curOutput, false /*fromCache*/), 1186 true, 1187 outputDesc->mLatency*2); 1188 } 1189 } 1190 // update the outputs if stopping one with a stream that can affect notification routing 1191 handleNotificationRoutingForStream(stream); 1192 } 1193 return NO_ERROR; 1194 } else { 1195 ALOGW("stopOutput() refcount is already 0 for output %d", output); 1196 return INVALID_OPERATION; 1197 } 1198} 1199 1200void AudioPolicyManager::releaseOutput(audio_io_handle_t output) 1201{ 1202 ALOGV("releaseOutput() %d", output); 1203 ssize_t index = mOutputs.indexOfKey(output); 1204 if (index < 0) { 1205 ALOGW("releaseOutput() releasing unknown output %d", output); 1206 return; 1207 } 1208 1209#ifdef AUDIO_POLICY_TEST 1210 int testIndex = testOutputIndex(output); 1211 if (testIndex != 0) { 1212 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(index); 1213 if (outputDesc->isActive()) { 1214 mpClientInterface->closeOutput(output); 1215 mOutputs.removeItem(output); 1216 mTestOutputs[testIndex] = 0; 1217 } 1218 return; 1219 } 1220#endif //AUDIO_POLICY_TEST 1221 1222 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(index); 1223 if (desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) { 1224 if (desc->mDirectOpenCount <= 0) { 1225 ALOGW("releaseOutput() invalid open count %d for output %d", 1226 desc->mDirectOpenCount, output); 1227 return; 1228 } 1229 if (--desc->mDirectOpenCount == 0) { 1230 closeOutput(output); 1231 // If effects where present on the output, audioflinger moved them to the primary 1232 // output by default: move them back to the appropriate output. 1233 audio_io_handle_t dstOutput = getOutputForEffect(); 1234 if (dstOutput != mPrimaryOutput) { 1235 mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, mPrimaryOutput, dstOutput); 1236 } 1237 mpClientInterface->onAudioPortListUpdate(); 1238 } 1239 } 1240} 1241 1242 1243audio_io_handle_t AudioPolicyManager::getInput(audio_source_t inputSource, 1244 uint32_t samplingRate, 1245 audio_format_t format, 1246 audio_channel_mask_t channelMask, 1247 audio_session_t session, 1248 audio_input_flags_t flags) 1249{ 1250 ALOGV("getInput() inputSource %d, samplingRate %d, format %d, channelMask %x, session %d, " 1251 "flags %#x", 1252 inputSource, samplingRate, format, channelMask, session, flags); 1253 1254 audio_devices_t device = getDeviceForInputSource(inputSource); 1255 1256 if (device == AUDIO_DEVICE_NONE) { 1257 ALOGW("getInput() could not find device for inputSource %d", inputSource); 1258 return AUDIO_IO_HANDLE_NONE; 1259 } 1260 1261 // adapt channel selection to input source 1262 switch (inputSource) { 1263 case AUDIO_SOURCE_VOICE_UPLINK: 1264 channelMask = AUDIO_CHANNEL_IN_VOICE_UPLINK; 1265 break; 1266 case AUDIO_SOURCE_VOICE_DOWNLINK: 1267 channelMask = AUDIO_CHANNEL_IN_VOICE_DNLINK; 1268 break; 1269 case AUDIO_SOURCE_VOICE_CALL: 1270 channelMask = AUDIO_CHANNEL_IN_VOICE_UPLINK | AUDIO_CHANNEL_IN_VOICE_DNLINK; 1271 break; 1272 default: 1273 break; 1274 } 1275 1276 sp<IOProfile> profile = getInputProfile(device, 1277 samplingRate, 1278 format, 1279 channelMask, 1280 flags); 1281 if (profile == 0) { 1282 ALOGW("getInput() could not find profile for device 0x%X, samplingRate %u, format %#x, " 1283 "channelMask 0x%X, flags %#x", 1284 device, samplingRate, format, channelMask, flags); 1285 return AUDIO_IO_HANDLE_NONE; 1286 } 1287 1288 if (profile->mModule->mHandle == 0) { 1289 ALOGE("getInput(): HW module %s not opened", profile->mModule->mName); 1290 return AUDIO_IO_HANDLE_NONE; 1291 } 1292 1293 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 1294 config.sample_rate = samplingRate; 1295 config.channel_mask = channelMask; 1296 config.format = format; 1297 audio_io_handle_t input = AUDIO_IO_HANDLE_NONE; 1298 1299 bool isSoundTrigger = false; 1300 if (inputSource == AUDIO_SOURCE_HOTWORD) { 1301 ssize_t index = mSoundTriggerSessions.indexOfKey(session); 1302 if (index >= 0) { 1303 input = mSoundTriggerSessions.valueFor(session); 1304 isSoundTrigger = true; 1305 ALOGV("SoundTrigger capture on session %d input %d", session, input); 1306 } 1307 } 1308 1309 status_t status = mpClientInterface->openInput(profile->mModule->mHandle, 1310 &input, 1311 &config, 1312 &device, 1313 String8(""), 1314 inputSource, 1315 flags); 1316 1317 // only accept input with the exact requested set of parameters 1318 if (status != NO_ERROR || 1319 (samplingRate != config.sample_rate) || 1320 (format != config.format) || 1321 (channelMask != config.channel_mask)) { 1322 ALOGW("getInput() failed opening input: samplingRate %d, format %d, channelMask %x", 1323 samplingRate, format, channelMask); 1324 if (input != AUDIO_IO_HANDLE_NONE) { 1325 mpClientInterface->closeInput(input); 1326 } 1327 return AUDIO_IO_HANDLE_NONE; 1328 } 1329 1330 sp<AudioInputDescriptor> inputDesc = new AudioInputDescriptor(profile); 1331 inputDesc->mInputSource = inputSource; 1332 inputDesc->mRefCount = 0; 1333 inputDesc->mOpenRefCount = 1; 1334 inputDesc->mSamplingRate = samplingRate; 1335 inputDesc->mFormat = format; 1336 inputDesc->mChannelMask = channelMask; 1337 inputDesc->mDevice = device; 1338 inputDesc->mSessions.add(session); 1339 inputDesc->mIsSoundTrigger = isSoundTrigger; 1340 1341 addInput(input, inputDesc); 1342 mpClientInterface->onAudioPortListUpdate(); 1343 return input; 1344} 1345 1346status_t AudioPolicyManager::startInput(audio_io_handle_t input, 1347 audio_session_t session) 1348{ 1349 ALOGV("startInput() input %d", input); 1350 ssize_t index = mInputs.indexOfKey(input); 1351 if (index < 0) { 1352 ALOGW("startInput() unknown input %d", input); 1353 return BAD_VALUE; 1354 } 1355 sp<AudioInputDescriptor> inputDesc = mInputs.valueAt(index); 1356 1357 index = inputDesc->mSessions.indexOf(session); 1358 if (index < 0) { 1359 ALOGW("startInput() unknown session %d on input %d", session, input); 1360 return BAD_VALUE; 1361 } 1362 1363 // virtual input devices are compatible with other input devices 1364 if (!isVirtualInputDevice(inputDesc->mDevice)) { 1365 1366 // for a non-virtual input device, check if there is another (non-virtual) active input 1367 audio_io_handle_t activeInput = getActiveInput(); 1368 if (activeInput != 0 && activeInput != input) { 1369 1370 // If the already active input uses AUDIO_SOURCE_HOTWORD then it is closed, 1371 // otherwise the active input continues and the new input cannot be started. 1372 sp<AudioInputDescriptor> activeDesc = mInputs.valueFor(activeInput); 1373 if (activeDesc->mInputSource == AUDIO_SOURCE_HOTWORD) { 1374 ALOGW("startInput(%d) preempting low-priority input %d", input, activeInput); 1375 stopInput(activeInput, activeDesc->mSessions.itemAt(0)); 1376 releaseInput(activeInput, activeDesc->mSessions.itemAt(0)); 1377 } else { 1378 ALOGE("startInput(%d) failed: other input %d already started", input, activeInput); 1379 return INVALID_OPERATION; 1380 } 1381 } 1382 } 1383 1384 if (inputDesc->mRefCount == 0) { 1385 if (activeInputsCount() == 0) { 1386 SoundTrigger::setCaptureState(true); 1387 } 1388 setInputDevice(input, getNewInputDevice(input), true /* force */); 1389 1390 // Automatically enable the remote submix output when input is started. 1391 // For remote submix (a virtual device), we open only one input per capture request. 1392 if (audio_is_remote_submix_device(inputDesc->mDevice)) { 1393 setDeviceConnectionState(AUDIO_DEVICE_OUT_REMOTE_SUBMIX, 1394 AUDIO_POLICY_DEVICE_STATE_AVAILABLE, AUDIO_REMOTE_SUBMIX_DEVICE_ADDRESS); 1395 } 1396 } 1397 1398 ALOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource); 1399 1400 inputDesc->mRefCount++; 1401 return NO_ERROR; 1402} 1403 1404status_t AudioPolicyManager::stopInput(audio_io_handle_t input, 1405 audio_session_t session) 1406{ 1407 ALOGV("stopInput() input %d", input); 1408 ssize_t index = mInputs.indexOfKey(input); 1409 if (index < 0) { 1410 ALOGW("stopInput() unknown input %d", input); 1411 return BAD_VALUE; 1412 } 1413 sp<AudioInputDescriptor> inputDesc = mInputs.valueAt(index); 1414 1415 index = inputDesc->mSessions.indexOf(session); 1416 if (index < 0) { 1417 ALOGW("stopInput() unknown session %d on input %d", session, input); 1418 return BAD_VALUE; 1419 } 1420 1421 if (inputDesc->mRefCount == 0) { 1422 ALOGW("stopInput() input %d already stopped", input); 1423 return INVALID_OPERATION; 1424 } 1425 1426 inputDesc->mRefCount--; 1427 if (inputDesc->mRefCount == 0) { 1428 1429 // automatically disable the remote submix output when input is stopped 1430 if (audio_is_remote_submix_device(inputDesc->mDevice)) { 1431 setDeviceConnectionState(AUDIO_DEVICE_OUT_REMOTE_SUBMIX, 1432 AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE, AUDIO_REMOTE_SUBMIX_DEVICE_ADDRESS); 1433 } 1434 1435 resetInputDevice(input); 1436 1437 if (activeInputsCount() == 0) { 1438 SoundTrigger::setCaptureState(false); 1439 } 1440 } 1441 return NO_ERROR; 1442} 1443 1444void AudioPolicyManager::releaseInput(audio_io_handle_t input, 1445 audio_session_t session) 1446{ 1447 ALOGV("releaseInput() %d", input); 1448 ssize_t index = mInputs.indexOfKey(input); 1449 if (index < 0) { 1450 ALOGW("releaseInput() releasing unknown input %d", input); 1451 return; 1452 } 1453 sp<AudioInputDescriptor> inputDesc = mInputs.valueAt(index); 1454 ALOG_ASSERT(inputDesc != 0); 1455 1456 index = inputDesc->mSessions.indexOf(session); 1457 if (index < 0) { 1458 ALOGW("releaseInput() unknown session %d on input %d", session, input); 1459 return; 1460 } 1461 inputDesc->mSessions.remove(session); 1462 if (inputDesc->mOpenRefCount == 0) { 1463 ALOGW("releaseInput() invalid open ref count %d", inputDesc->mOpenRefCount); 1464 return; 1465 } 1466 inputDesc->mOpenRefCount--; 1467 if (inputDesc->mOpenRefCount > 0) { 1468 ALOGV("releaseInput() exit > 0"); 1469 return; 1470 } 1471 1472 closeInput(input); 1473 mpClientInterface->onAudioPortListUpdate(); 1474 ALOGV("releaseInput() exit"); 1475} 1476 1477void AudioPolicyManager::closeAllInputs() { 1478 bool patchRemoved = false; 1479 1480 for(size_t input_index = 0; input_index < mInputs.size(); input_index++) { 1481 sp<AudioInputDescriptor> inputDesc = mInputs.valueAt(input_index); 1482 ssize_t patch_index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 1483 if (patch_index >= 0) { 1484 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(patch_index); 1485 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 1486 mAudioPatches.removeItemsAt(patch_index); 1487 patchRemoved = true; 1488 } 1489 mpClientInterface->closeInput(mInputs.keyAt(input_index)); 1490 } 1491 mInputs.clear(); 1492 nextAudioPortGeneration(); 1493 1494 if (patchRemoved) { 1495 mpClientInterface->onAudioPatchListUpdate(); 1496 } 1497} 1498 1499void AudioPolicyManager::initStreamVolume(audio_stream_type_t stream, 1500 int indexMin, 1501 int indexMax) 1502{ 1503 ALOGV("initStreamVolume() stream %d, min %d, max %d", stream , indexMin, indexMax); 1504 if (indexMin < 0 || indexMin >= indexMax) { 1505 ALOGW("initStreamVolume() invalid index limits for stream %d, min %d, max %d", stream , indexMin, indexMax); 1506 return; 1507 } 1508 mStreams[stream].mIndexMin = indexMin; 1509 mStreams[stream].mIndexMax = indexMax; 1510} 1511 1512status_t AudioPolicyManager::setStreamVolumeIndex(audio_stream_type_t stream, 1513 int index, 1514 audio_devices_t device) 1515{ 1516 1517 if ((index < mStreams[stream].mIndexMin) || (index > mStreams[stream].mIndexMax)) { 1518 return BAD_VALUE; 1519 } 1520 if (!audio_is_output_device(device)) { 1521 return BAD_VALUE; 1522 } 1523 1524 // Force max volume if stream cannot be muted 1525 if (!mStreams[stream].mCanBeMuted) index = mStreams[stream].mIndexMax; 1526 1527 ALOGV("setStreamVolumeIndex() stream %d, device %04x, index %d", 1528 stream, device, index); 1529 1530 // if device is AUDIO_DEVICE_OUT_DEFAULT set default value and 1531 // clear all device specific values 1532 if (device == AUDIO_DEVICE_OUT_DEFAULT) { 1533 mStreams[stream].mIndexCur.clear(); 1534 } 1535 mStreams[stream].mIndexCur.add(device, index); 1536 1537 // compute and apply stream volume on all outputs according to connected device 1538 status_t status = NO_ERROR; 1539 for (size_t i = 0; i < mOutputs.size(); i++) { 1540 audio_devices_t curDevice = 1541 getDeviceForVolume(mOutputs.valueAt(i)->device()); 1542 if ((device == AUDIO_DEVICE_OUT_DEFAULT) || (device == curDevice)) { 1543 status_t volStatus = checkAndSetVolume(stream, index, mOutputs.keyAt(i), curDevice); 1544 if (volStatus != NO_ERROR) { 1545 status = volStatus; 1546 } 1547 } 1548 } 1549 return status; 1550} 1551 1552status_t AudioPolicyManager::getStreamVolumeIndex(audio_stream_type_t stream, 1553 int *index, 1554 audio_devices_t device) 1555{ 1556 if (index == NULL) { 1557 return BAD_VALUE; 1558 } 1559 if (!audio_is_output_device(device)) { 1560 return BAD_VALUE; 1561 } 1562 // if device is AUDIO_DEVICE_OUT_DEFAULT, return volume for device corresponding to 1563 // the strategy the stream belongs to. 1564 if (device == AUDIO_DEVICE_OUT_DEFAULT) { 1565 device = getDeviceForStrategy(getStrategy(stream), true /*fromCache*/); 1566 } 1567 device = getDeviceForVolume(device); 1568 1569 *index = mStreams[stream].getVolumeIndex(device); 1570 ALOGV("getStreamVolumeIndex() stream %d device %08x index %d", stream, device, *index); 1571 return NO_ERROR; 1572} 1573 1574audio_io_handle_t AudioPolicyManager::selectOutputForEffects( 1575 const SortedVector<audio_io_handle_t>& outputs) 1576{ 1577 // select one output among several suitable for global effects. 1578 // The priority is as follows: 1579 // 1: An offloaded output. If the effect ends up not being offloadable, 1580 // AudioFlinger will invalidate the track and the offloaded output 1581 // will be closed causing the effect to be moved to a PCM output. 1582 // 2: A deep buffer output 1583 // 3: the first output in the list 1584 1585 if (outputs.size() == 0) { 1586 return 0; 1587 } 1588 1589 audio_io_handle_t outputOffloaded = 0; 1590 audio_io_handle_t outputDeepBuffer = 0; 1591 1592 for (size_t i = 0; i < outputs.size(); i++) { 1593 sp<AudioOutputDescriptor> desc = mOutputs.valueFor(outputs[i]); 1594 ALOGV("selectOutputForEffects outputs[%zu] flags %x", i, desc->mFlags); 1595 if ((desc->mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) { 1596 outputOffloaded = outputs[i]; 1597 } 1598 if ((desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) != 0) { 1599 outputDeepBuffer = outputs[i]; 1600 } 1601 } 1602 1603 ALOGV("selectOutputForEffects outputOffloaded %d outputDeepBuffer %d", 1604 outputOffloaded, outputDeepBuffer); 1605 if (outputOffloaded != 0) { 1606 return outputOffloaded; 1607 } 1608 if (outputDeepBuffer != 0) { 1609 return outputDeepBuffer; 1610 } 1611 1612 return outputs[0]; 1613} 1614 1615audio_io_handle_t AudioPolicyManager::getOutputForEffect(const effect_descriptor_t *desc) 1616{ 1617 // apply simple rule where global effects are attached to the same output as MUSIC streams 1618 1619 routing_strategy strategy = getStrategy(AUDIO_STREAM_MUSIC); 1620 audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/); 1621 SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(device, mOutputs); 1622 1623 audio_io_handle_t output = selectOutputForEffects(dstOutputs); 1624 ALOGV("getOutputForEffect() got output %d for fx %s flags %x", 1625 output, (desc == NULL) ? "unspecified" : desc->name, (desc == NULL) ? 0 : desc->flags); 1626 1627 return output; 1628} 1629 1630status_t AudioPolicyManager::registerEffect(const effect_descriptor_t *desc, 1631 audio_io_handle_t io, 1632 uint32_t strategy, 1633 int session, 1634 int id) 1635{ 1636 ssize_t index = mOutputs.indexOfKey(io); 1637 if (index < 0) { 1638 index = mInputs.indexOfKey(io); 1639 if (index < 0) { 1640 ALOGW("registerEffect() unknown io %d", io); 1641 return INVALID_OPERATION; 1642 } 1643 } 1644 1645 if (mTotalEffectsMemory + desc->memoryUsage > getMaxEffectsMemory()) { 1646 ALOGW("registerEffect() memory limit exceeded for Fx %s, Memory %d KB", 1647 desc->name, desc->memoryUsage); 1648 return INVALID_OPERATION; 1649 } 1650 mTotalEffectsMemory += desc->memoryUsage; 1651 ALOGV("registerEffect() effect %s, io %d, strategy %d session %d id %d", 1652 desc->name, io, strategy, session, id); 1653 ALOGV("registerEffect() memory %d, total memory %d", desc->memoryUsage, mTotalEffectsMemory); 1654 1655 sp<EffectDescriptor> effectDesc = new EffectDescriptor(); 1656 memcpy (&effectDesc->mDesc, desc, sizeof(effect_descriptor_t)); 1657 effectDesc->mIo = io; 1658 effectDesc->mStrategy = (routing_strategy)strategy; 1659 effectDesc->mSession = session; 1660 effectDesc->mEnabled = false; 1661 1662 mEffects.add(id, effectDesc); 1663 1664 return NO_ERROR; 1665} 1666 1667status_t AudioPolicyManager::unregisterEffect(int id) 1668{ 1669 ssize_t index = mEffects.indexOfKey(id); 1670 if (index < 0) { 1671 ALOGW("unregisterEffect() unknown effect ID %d", id); 1672 return INVALID_OPERATION; 1673 } 1674 1675 sp<EffectDescriptor> effectDesc = mEffects.valueAt(index); 1676 1677 setEffectEnabled(effectDesc, false); 1678 1679 if (mTotalEffectsMemory < effectDesc->mDesc.memoryUsage) { 1680 ALOGW("unregisterEffect() memory %d too big for total %d", 1681 effectDesc->mDesc.memoryUsage, mTotalEffectsMemory); 1682 effectDesc->mDesc.memoryUsage = mTotalEffectsMemory; 1683 } 1684 mTotalEffectsMemory -= effectDesc->mDesc.memoryUsage; 1685 ALOGV("unregisterEffect() effect %s, ID %d, memory %d total memory %d", 1686 effectDesc->mDesc.name, id, effectDesc->mDesc.memoryUsage, mTotalEffectsMemory); 1687 1688 mEffects.removeItem(id); 1689 1690 return NO_ERROR; 1691} 1692 1693status_t AudioPolicyManager::setEffectEnabled(int id, bool enabled) 1694{ 1695 ssize_t index = mEffects.indexOfKey(id); 1696 if (index < 0) { 1697 ALOGW("unregisterEffect() unknown effect ID %d", id); 1698 return INVALID_OPERATION; 1699 } 1700 1701 return setEffectEnabled(mEffects.valueAt(index), enabled); 1702} 1703 1704status_t AudioPolicyManager::setEffectEnabled(const sp<EffectDescriptor>& effectDesc, bool enabled) 1705{ 1706 if (enabled == effectDesc->mEnabled) { 1707 ALOGV("setEffectEnabled(%s) effect already %s", 1708 enabled?"true":"false", enabled?"enabled":"disabled"); 1709 return INVALID_OPERATION; 1710 } 1711 1712 if (enabled) { 1713 if (mTotalEffectsCpuLoad + effectDesc->mDesc.cpuLoad > getMaxEffectsCpuLoad()) { 1714 ALOGW("setEffectEnabled(true) CPU Load limit exceeded for Fx %s, CPU %f MIPS", 1715 effectDesc->mDesc.name, (float)effectDesc->mDesc.cpuLoad/10); 1716 return INVALID_OPERATION; 1717 } 1718 mTotalEffectsCpuLoad += effectDesc->mDesc.cpuLoad; 1719 ALOGV("setEffectEnabled(true) total CPU %d", mTotalEffectsCpuLoad); 1720 } else { 1721 if (mTotalEffectsCpuLoad < effectDesc->mDesc.cpuLoad) { 1722 ALOGW("setEffectEnabled(false) CPU load %d too high for total %d", 1723 effectDesc->mDesc.cpuLoad, mTotalEffectsCpuLoad); 1724 effectDesc->mDesc.cpuLoad = mTotalEffectsCpuLoad; 1725 } 1726 mTotalEffectsCpuLoad -= effectDesc->mDesc.cpuLoad; 1727 ALOGV("setEffectEnabled(false) total CPU %d", mTotalEffectsCpuLoad); 1728 } 1729 effectDesc->mEnabled = enabled; 1730 return NO_ERROR; 1731} 1732 1733bool AudioPolicyManager::isNonOffloadableEffectEnabled() 1734{ 1735 for (size_t i = 0; i < mEffects.size(); i++) { 1736 sp<EffectDescriptor> effectDesc = mEffects.valueAt(i); 1737 if (effectDesc->mEnabled && (effectDesc->mStrategy == STRATEGY_MEDIA) && 1738 ((effectDesc->mDesc.flags & EFFECT_FLAG_OFFLOAD_SUPPORTED) == 0)) { 1739 ALOGV("isNonOffloadableEffectEnabled() non offloadable effect %s enabled on session %d", 1740 effectDesc->mDesc.name, effectDesc->mSession); 1741 return true; 1742 } 1743 } 1744 return false; 1745} 1746 1747bool AudioPolicyManager::isStreamActive(audio_stream_type_t stream, uint32_t inPastMs) const 1748{ 1749 nsecs_t sysTime = systemTime(); 1750 for (size_t i = 0; i < mOutputs.size(); i++) { 1751 const sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(i); 1752 if (outputDesc->isStreamActive(stream, inPastMs, sysTime)) { 1753 return true; 1754 } 1755 } 1756 return false; 1757} 1758 1759bool AudioPolicyManager::isStreamActiveRemotely(audio_stream_type_t stream, 1760 uint32_t inPastMs) const 1761{ 1762 nsecs_t sysTime = systemTime(); 1763 for (size_t i = 0; i < mOutputs.size(); i++) { 1764 const sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(i); 1765 if (((outputDesc->device() & APM_AUDIO_OUT_DEVICE_REMOTE_ALL) != 0) && 1766 outputDesc->isStreamActive(stream, inPastMs, sysTime)) { 1767 return true; 1768 } 1769 } 1770 return false; 1771} 1772 1773bool AudioPolicyManager::isSourceActive(audio_source_t source) const 1774{ 1775 for (size_t i = 0; i < mInputs.size(); i++) { 1776 const sp<AudioInputDescriptor> inputDescriptor = mInputs.valueAt(i); 1777 if ((inputDescriptor->mInputSource == (int)source || 1778 (source == AUDIO_SOURCE_VOICE_RECOGNITION && 1779 inputDescriptor->mInputSource == AUDIO_SOURCE_HOTWORD)) 1780 && (inputDescriptor->mRefCount > 0)) { 1781 return true; 1782 } 1783 } 1784 return false; 1785} 1786 1787 1788status_t AudioPolicyManager::dump(int fd) 1789{ 1790 const size_t SIZE = 256; 1791 char buffer[SIZE]; 1792 String8 result; 1793 1794 snprintf(buffer, SIZE, "\nAudioPolicyManager Dump: %p\n", this); 1795 result.append(buffer); 1796 1797 snprintf(buffer, SIZE, " Primary Output: %d\n", mPrimaryOutput); 1798 result.append(buffer); 1799 snprintf(buffer, SIZE, " Phone state: %d\n", mPhoneState); 1800 result.append(buffer); 1801 snprintf(buffer, SIZE, " Force use for communications %d\n", 1802 mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]); 1803 result.append(buffer); 1804 snprintf(buffer, SIZE, " Force use for media %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA]); 1805 result.append(buffer); 1806 snprintf(buffer, SIZE, " Force use for record %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD]); 1807 result.append(buffer); 1808 snprintf(buffer, SIZE, " Force use for dock %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_DOCK]); 1809 result.append(buffer); 1810 snprintf(buffer, SIZE, " Force use for system %d\n", mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM]); 1811 result.append(buffer); 1812 snprintf(buffer, SIZE, " Force use for hdmi system audio %d\n", 1813 mForceUse[AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO]); 1814 result.append(buffer); 1815 1816 snprintf(buffer, SIZE, " Available output devices:\n"); 1817 result.append(buffer); 1818 write(fd, result.string(), result.size()); 1819 for (size_t i = 0; i < mAvailableOutputDevices.size(); i++) { 1820 mAvailableOutputDevices[i]->dump(fd, 2, i); 1821 } 1822 snprintf(buffer, SIZE, "\n Available input devices:\n"); 1823 write(fd, buffer, strlen(buffer)); 1824 for (size_t i = 0; i < mAvailableInputDevices.size(); i++) { 1825 mAvailableInputDevices[i]->dump(fd, 2, i); 1826 } 1827 1828 snprintf(buffer, SIZE, "\nHW Modules dump:\n"); 1829 write(fd, buffer, strlen(buffer)); 1830 for (size_t i = 0; i < mHwModules.size(); i++) { 1831 snprintf(buffer, SIZE, "- HW Module %zu:\n", i + 1); 1832 write(fd, buffer, strlen(buffer)); 1833 mHwModules[i]->dump(fd); 1834 } 1835 1836 snprintf(buffer, SIZE, "\nOutputs dump:\n"); 1837 write(fd, buffer, strlen(buffer)); 1838 for (size_t i = 0; i < mOutputs.size(); i++) { 1839 snprintf(buffer, SIZE, "- Output %d dump:\n", mOutputs.keyAt(i)); 1840 write(fd, buffer, strlen(buffer)); 1841 mOutputs.valueAt(i)->dump(fd); 1842 } 1843 1844 snprintf(buffer, SIZE, "\nInputs dump:\n"); 1845 write(fd, buffer, strlen(buffer)); 1846 for (size_t i = 0; i < mInputs.size(); i++) { 1847 snprintf(buffer, SIZE, "- Input %d dump:\n", mInputs.keyAt(i)); 1848 write(fd, buffer, strlen(buffer)); 1849 mInputs.valueAt(i)->dump(fd); 1850 } 1851 1852 snprintf(buffer, SIZE, "\nStreams dump:\n"); 1853 write(fd, buffer, strlen(buffer)); 1854 snprintf(buffer, SIZE, 1855 " Stream Can be muted Index Min Index Max Index Cur [device : index]...\n"); 1856 write(fd, buffer, strlen(buffer)); 1857 for (size_t i = 0; i < AUDIO_STREAM_CNT; i++) { 1858 snprintf(buffer, SIZE, " %02zu ", i); 1859 write(fd, buffer, strlen(buffer)); 1860 mStreams[i].dump(fd); 1861 } 1862 1863 snprintf(buffer, SIZE, "\nTotal Effects CPU: %f MIPS, Total Effects memory: %d KB\n", 1864 (float)mTotalEffectsCpuLoad/10, mTotalEffectsMemory); 1865 write(fd, buffer, strlen(buffer)); 1866 1867 snprintf(buffer, SIZE, "Registered effects:\n"); 1868 write(fd, buffer, strlen(buffer)); 1869 for (size_t i = 0; i < mEffects.size(); i++) { 1870 snprintf(buffer, SIZE, "- Effect %d dump:\n", mEffects.keyAt(i)); 1871 write(fd, buffer, strlen(buffer)); 1872 mEffects.valueAt(i)->dump(fd); 1873 } 1874 1875 snprintf(buffer, SIZE, "\nAudio Patches:\n"); 1876 write(fd, buffer, strlen(buffer)); 1877 for (size_t i = 0; i < mAudioPatches.size(); i++) { 1878 mAudioPatches[i]->dump(fd, 2, i); 1879 } 1880 1881 return NO_ERROR; 1882} 1883 1884// This function checks for the parameters which can be offloaded. 1885// This can be enhanced depending on the capability of the DSP and policy 1886// of the system. 1887bool AudioPolicyManager::isOffloadSupported(const audio_offload_info_t& offloadInfo) 1888{ 1889 ALOGV("isOffloadSupported: SR=%u, CM=0x%x, Format=0x%x, StreamType=%d," 1890 " BitRate=%u, duration=%" PRId64 " us, has_video=%d", 1891 offloadInfo.sample_rate, offloadInfo.channel_mask, 1892 offloadInfo.format, 1893 offloadInfo.stream_type, offloadInfo.bit_rate, offloadInfo.duration_us, 1894 offloadInfo.has_video); 1895 1896 // Check if offload has been disabled 1897 char propValue[PROPERTY_VALUE_MAX]; 1898 if (property_get("audio.offload.disable", propValue, "0")) { 1899 if (atoi(propValue) != 0) { 1900 ALOGV("offload disabled by audio.offload.disable=%s", propValue ); 1901 return false; 1902 } 1903 } 1904 1905 // Check if stream type is music, then only allow offload as of now. 1906 if (offloadInfo.stream_type != AUDIO_STREAM_MUSIC) 1907 { 1908 ALOGV("isOffloadSupported: stream_type != MUSIC, returning false"); 1909 return false; 1910 } 1911 1912 //TODO: enable audio offloading with video when ready 1913 if (offloadInfo.has_video) 1914 { 1915 ALOGV("isOffloadSupported: has_video == true, returning false"); 1916 return false; 1917 } 1918 1919 //If duration is less than minimum value defined in property, return false 1920 if (property_get("audio.offload.min.duration.secs", propValue, NULL)) { 1921 if (offloadInfo.duration_us < (atoi(propValue) * 1000000 )) { 1922 ALOGV("Offload denied by duration < audio.offload.min.duration.secs(=%s)", propValue); 1923 return false; 1924 } 1925 } else if (offloadInfo.duration_us < OFFLOAD_DEFAULT_MIN_DURATION_SECS * 1000000) { 1926 ALOGV("Offload denied by duration < default min(=%u)", OFFLOAD_DEFAULT_MIN_DURATION_SECS); 1927 return false; 1928 } 1929 1930 // Do not allow offloading if one non offloadable effect is enabled. This prevents from 1931 // creating an offloaded track and tearing it down immediately after start when audioflinger 1932 // detects there is an active non offloadable effect. 1933 // FIXME: We should check the audio session here but we do not have it in this context. 1934 // This may prevent offloading in rare situations where effects are left active by apps 1935 // in the background. 1936 if (isNonOffloadableEffectEnabled()) { 1937 return false; 1938 } 1939 1940 // See if there is a profile to support this. 1941 // AUDIO_DEVICE_NONE 1942 sp<IOProfile> profile = getProfileForDirectOutput(AUDIO_DEVICE_NONE /*ignore device */, 1943 offloadInfo.sample_rate, 1944 offloadInfo.format, 1945 offloadInfo.channel_mask, 1946 AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD); 1947 ALOGV("isOffloadSupported() profile %sfound", profile != 0 ? "" : "NOT "); 1948 return (profile != 0); 1949} 1950 1951status_t AudioPolicyManager::listAudioPorts(audio_port_role_t role, 1952 audio_port_type_t type, 1953 unsigned int *num_ports, 1954 struct audio_port *ports, 1955 unsigned int *generation) 1956{ 1957 if (num_ports == NULL || (*num_ports != 0 && ports == NULL) || 1958 generation == NULL) { 1959 return BAD_VALUE; 1960 } 1961 ALOGV("listAudioPorts() role %d type %d num_ports %d ports %p", role, type, *num_ports, ports); 1962 if (ports == NULL) { 1963 *num_ports = 0; 1964 } 1965 1966 size_t portsWritten = 0; 1967 size_t portsMax = *num_ports; 1968 *num_ports = 0; 1969 if (type == AUDIO_PORT_TYPE_NONE || type == AUDIO_PORT_TYPE_DEVICE) { 1970 if (role == AUDIO_PORT_ROLE_SINK || role == AUDIO_PORT_ROLE_NONE) { 1971 for (size_t i = 0; 1972 i < mAvailableOutputDevices.size() && portsWritten < portsMax; i++) { 1973 mAvailableOutputDevices[i]->toAudioPort(&ports[portsWritten++]); 1974 } 1975 *num_ports += mAvailableOutputDevices.size(); 1976 } 1977 if (role == AUDIO_PORT_ROLE_SOURCE || role == AUDIO_PORT_ROLE_NONE) { 1978 for (size_t i = 0; 1979 i < mAvailableInputDevices.size() && portsWritten < portsMax; i++) { 1980 mAvailableInputDevices[i]->toAudioPort(&ports[portsWritten++]); 1981 } 1982 *num_ports += mAvailableInputDevices.size(); 1983 } 1984 } 1985 if (type == AUDIO_PORT_TYPE_NONE || type == AUDIO_PORT_TYPE_MIX) { 1986 if (role == AUDIO_PORT_ROLE_SINK || role == AUDIO_PORT_ROLE_NONE) { 1987 for (size_t i = 0; i < mInputs.size() && portsWritten < portsMax; i++) { 1988 mInputs[i]->toAudioPort(&ports[portsWritten++]); 1989 } 1990 *num_ports += mInputs.size(); 1991 } 1992 if (role == AUDIO_PORT_ROLE_SOURCE || role == AUDIO_PORT_ROLE_NONE) { 1993 size_t numOutputs = 0; 1994 for (size_t i = 0; i < mOutputs.size(); i++) { 1995 if (!mOutputs[i]->isDuplicated()) { 1996 numOutputs++; 1997 if (portsWritten < portsMax) { 1998 mOutputs[i]->toAudioPort(&ports[portsWritten++]); 1999 } 2000 } 2001 } 2002 *num_ports += numOutputs; 2003 } 2004 } 2005 *generation = curAudioPortGeneration(); 2006 ALOGV("listAudioPorts() got %zu ports needed %d", portsWritten, *num_ports); 2007 return NO_ERROR; 2008} 2009 2010status_t AudioPolicyManager::getAudioPort(struct audio_port *port __unused) 2011{ 2012 return NO_ERROR; 2013} 2014 2015sp<AudioPolicyManager::AudioOutputDescriptor> AudioPolicyManager::getOutputFromId( 2016 audio_port_handle_t id) const 2017{ 2018 sp<AudioOutputDescriptor> outputDesc = NULL; 2019 for (size_t i = 0; i < mOutputs.size(); i++) { 2020 outputDesc = mOutputs.valueAt(i); 2021 if (outputDesc->mId == id) { 2022 break; 2023 } 2024 } 2025 return outputDesc; 2026} 2027 2028sp<AudioPolicyManager::AudioInputDescriptor> AudioPolicyManager::getInputFromId( 2029 audio_port_handle_t id) const 2030{ 2031 sp<AudioInputDescriptor> inputDesc = NULL; 2032 for (size_t i = 0; i < mInputs.size(); i++) { 2033 inputDesc = mInputs.valueAt(i); 2034 if (inputDesc->mId == id) { 2035 break; 2036 } 2037 } 2038 return inputDesc; 2039} 2040 2041sp <AudioPolicyManager::HwModule> AudioPolicyManager::getModuleForDevice( 2042 audio_devices_t device) const 2043{ 2044 sp <HwModule> module; 2045 2046 for (size_t i = 0; i < mHwModules.size(); i++) { 2047 if (mHwModules[i]->mHandle == 0) { 2048 continue; 2049 } 2050 if (audio_is_output_device(device)) { 2051 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 2052 { 2053 if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices.types() & device) { 2054 return mHwModules[i]; 2055 } 2056 } 2057 } else { 2058 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) { 2059 if (mHwModules[i]->mInputProfiles[j]->mSupportedDevices.types() & 2060 device & ~AUDIO_DEVICE_BIT_IN) { 2061 return mHwModules[i]; 2062 } 2063 } 2064 } 2065 } 2066 return module; 2067} 2068 2069sp <AudioPolicyManager::HwModule> AudioPolicyManager::getModuleFromName(const char *name) const 2070{ 2071 sp <HwModule> module; 2072 2073 for (size_t i = 0; i < mHwModules.size(); i++) 2074 { 2075 if (strcmp(mHwModules[i]->mName, name) == 0) { 2076 return mHwModules[i]; 2077 } 2078 } 2079 return module; 2080} 2081 2082audio_devices_t AudioPolicyManager::availablePrimaryOutputDevices() 2083{ 2084 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(mPrimaryOutput); 2085 audio_devices_t devices = outputDesc->mProfile->mSupportedDevices.types(); 2086 return devices & mAvailableOutputDevices.types(); 2087} 2088 2089audio_devices_t AudioPolicyManager::availablePrimaryInputDevices() 2090{ 2091 audio_module_handle_t primaryHandle = 2092 mOutputs.valueFor(mPrimaryOutput)->mProfile->mModule->mHandle; 2093 audio_devices_t devices = AUDIO_DEVICE_NONE; 2094 for (size_t i = 0; i < mAvailableInputDevices.size(); i++) { 2095 if (mAvailableInputDevices[i]->mModule->mHandle == primaryHandle) { 2096 devices |= mAvailableInputDevices[i]->mDeviceType; 2097 } 2098 } 2099 return devices; 2100} 2101 2102status_t AudioPolicyManager::createAudioPatch(const struct audio_patch *patch, 2103 audio_patch_handle_t *handle, 2104 uid_t uid) 2105{ 2106 ALOGV("createAudioPatch()"); 2107 2108 if (handle == NULL || patch == NULL) { 2109 return BAD_VALUE; 2110 } 2111 ALOGV("createAudioPatch() num sources %d num sinks %d", patch->num_sources, patch->num_sinks); 2112 2113 if (patch->num_sources == 0 || patch->num_sources > AUDIO_PATCH_PORTS_MAX || 2114 patch->num_sinks == 0 || patch->num_sinks > AUDIO_PATCH_PORTS_MAX) { 2115 return BAD_VALUE; 2116 } 2117 // only one source per audio patch supported for now 2118 if (patch->num_sources > 1) { 2119 return INVALID_OPERATION; 2120 } 2121 2122 if (patch->sources[0].role != AUDIO_PORT_ROLE_SOURCE) { 2123 return INVALID_OPERATION; 2124 } 2125 for (size_t i = 0; i < patch->num_sinks; i++) { 2126 if (patch->sinks[i].role != AUDIO_PORT_ROLE_SINK) { 2127 return INVALID_OPERATION; 2128 } 2129 } 2130 2131 sp<AudioPatch> patchDesc; 2132 ssize_t index = mAudioPatches.indexOfKey(*handle); 2133 2134 ALOGV("createAudioPatch source id %d role %d type %d", patch->sources[0].id, 2135 patch->sources[0].role, 2136 patch->sources[0].type); 2137#if LOG_NDEBUG == 0 2138 for (size_t i = 0; i < patch->num_sinks; i++) { 2139 ALOGV("createAudioPatch sink %d: id %d role %d type %d", i, patch->sinks[i].id, 2140 patch->sinks[i].role, 2141 patch->sinks[i].type); 2142 } 2143#endif 2144 2145 if (index >= 0) { 2146 patchDesc = mAudioPatches.valueAt(index); 2147 ALOGV("createAudioPatch() mUidCached %d patchDesc->mUid %d uid %d", 2148 mUidCached, patchDesc->mUid, uid); 2149 if (patchDesc->mUid != mUidCached && uid != patchDesc->mUid) { 2150 return INVALID_OPERATION; 2151 } 2152 } else { 2153 *handle = 0; 2154 } 2155 2156 if (patch->sources[0].type == AUDIO_PORT_TYPE_MIX) { 2157 sp<AudioOutputDescriptor> outputDesc = getOutputFromId(patch->sources[0].id); 2158 if (outputDesc == NULL) { 2159 ALOGV("createAudioPatch() output not found for id %d", patch->sources[0].id); 2160 return BAD_VALUE; 2161 } 2162 ALOG_ASSERT(!outputDesc->isDuplicated(),"duplicated output %d in source in ports", 2163 outputDesc->mIoHandle); 2164 if (patchDesc != 0) { 2165 if (patchDesc->mPatch.sources[0].id != patch->sources[0].id) { 2166 ALOGV("createAudioPatch() source id differs for patch current id %d new id %d", 2167 patchDesc->mPatch.sources[0].id, patch->sources[0].id); 2168 return BAD_VALUE; 2169 } 2170 } 2171 DeviceVector devices; 2172 for (size_t i = 0; i < patch->num_sinks; i++) { 2173 // Only support mix to devices connection 2174 // TODO add support for mix to mix connection 2175 if (patch->sinks[i].type != AUDIO_PORT_TYPE_DEVICE) { 2176 ALOGV("createAudioPatch() source mix but sink is not a device"); 2177 return INVALID_OPERATION; 2178 } 2179 sp<DeviceDescriptor> devDesc = 2180 mAvailableOutputDevices.getDeviceFromId(patch->sinks[i].id); 2181 if (devDesc == 0) { 2182 ALOGV("createAudioPatch() out device not found for id %d", patch->sinks[i].id); 2183 return BAD_VALUE; 2184 } 2185 2186 if (!outputDesc->mProfile->isCompatibleProfile(devDesc->mDeviceType, 2187 patch->sources[0].sample_rate, 2188 NULL, // updatedSamplingRate 2189 patch->sources[0].format, 2190 patch->sources[0].channel_mask, 2191 AUDIO_OUTPUT_FLAG_NONE /*FIXME*/)) { 2192 ALOGV("createAudioPatch() profile not supported for device %08x", 2193 devDesc->mDeviceType); 2194 return INVALID_OPERATION; 2195 } 2196 devices.add(devDesc); 2197 } 2198 if (devices.size() == 0) { 2199 return INVALID_OPERATION; 2200 } 2201 2202 // TODO: reconfigure output format and channels here 2203 ALOGV("createAudioPatch() setting device %08x on output %d", 2204 devices.types(), outputDesc->mIoHandle); 2205 setOutputDevice(outputDesc->mIoHandle, devices.types(), true, 0, handle); 2206 index = mAudioPatches.indexOfKey(*handle); 2207 if (index >= 0) { 2208 if (patchDesc != 0 && patchDesc != mAudioPatches.valueAt(index)) { 2209 ALOGW("createAudioPatch() setOutputDevice() did not reuse the patch provided"); 2210 } 2211 patchDesc = mAudioPatches.valueAt(index); 2212 patchDesc->mUid = uid; 2213 ALOGV("createAudioPatch() success"); 2214 } else { 2215 ALOGW("createAudioPatch() setOutputDevice() failed to create a patch"); 2216 return INVALID_OPERATION; 2217 } 2218 } else if (patch->sources[0].type == AUDIO_PORT_TYPE_DEVICE) { 2219 if (patch->sinks[0].type == AUDIO_PORT_TYPE_MIX) { 2220 // input device to input mix connection 2221 // only one sink supported when connecting an input device to a mix 2222 if (patch->num_sinks > 1) { 2223 return INVALID_OPERATION; 2224 } 2225 sp<AudioInputDescriptor> inputDesc = getInputFromId(patch->sinks[0].id); 2226 if (inputDesc == NULL) { 2227 return BAD_VALUE; 2228 } 2229 if (patchDesc != 0) { 2230 if (patchDesc->mPatch.sinks[0].id != patch->sinks[0].id) { 2231 return BAD_VALUE; 2232 } 2233 } 2234 sp<DeviceDescriptor> devDesc = 2235 mAvailableInputDevices.getDeviceFromId(patch->sources[0].id); 2236 if (devDesc == 0) { 2237 return BAD_VALUE; 2238 } 2239 2240 if (!inputDesc->mProfile->isCompatibleProfile(devDesc->mDeviceType, 2241 patch->sinks[0].sample_rate, 2242 NULL, /*updatedSampleRate*/ 2243 patch->sinks[0].format, 2244 patch->sinks[0].channel_mask, 2245 // FIXME for the parameter type, 2246 // and the NONE 2247 (audio_output_flags_t) 2248 AUDIO_INPUT_FLAG_NONE)) { 2249 return INVALID_OPERATION; 2250 } 2251 // TODO: reconfigure output format and channels here 2252 ALOGV("createAudioPatch() setting device %08x on output %d", 2253 devDesc->mDeviceType, inputDesc->mIoHandle); 2254 setInputDevice(inputDesc->mIoHandle, devDesc->mDeviceType, true, handle); 2255 index = mAudioPatches.indexOfKey(*handle); 2256 if (index >= 0) { 2257 if (patchDesc != 0 && patchDesc != mAudioPatches.valueAt(index)) { 2258 ALOGW("createAudioPatch() setInputDevice() did not reuse the patch provided"); 2259 } 2260 patchDesc = mAudioPatches.valueAt(index); 2261 patchDesc->mUid = uid; 2262 ALOGV("createAudioPatch() success"); 2263 } else { 2264 ALOGW("createAudioPatch() setInputDevice() failed to create a patch"); 2265 return INVALID_OPERATION; 2266 } 2267 } else if (patch->sinks[0].type == AUDIO_PORT_TYPE_DEVICE) { 2268 // device to device connection 2269 if (patchDesc != 0) { 2270 if (patchDesc->mPatch.sources[0].id != patch->sources[0].id) { 2271 return BAD_VALUE; 2272 } 2273 } 2274 sp<DeviceDescriptor> srcDeviceDesc = 2275 mAvailableInputDevices.getDeviceFromId(patch->sources[0].id); 2276 2277 //update source and sink with our own data as the data passed in the patch may 2278 // be incomplete. 2279 struct audio_patch newPatch = *patch; 2280 srcDeviceDesc->toAudioPortConfig(&newPatch.sources[0], &patch->sources[0]); 2281 if (srcDeviceDesc == 0) { 2282 return BAD_VALUE; 2283 } 2284 2285 for (size_t i = 0; i < patch->num_sinks; i++) { 2286 if (patch->sinks[i].type != AUDIO_PORT_TYPE_DEVICE) { 2287 ALOGV("createAudioPatch() source device but one sink is not a device"); 2288 return INVALID_OPERATION; 2289 } 2290 2291 sp<DeviceDescriptor> sinkDeviceDesc = 2292 mAvailableOutputDevices.getDeviceFromId(patch->sinks[i].id); 2293 if (sinkDeviceDesc == 0) { 2294 return BAD_VALUE; 2295 } 2296 sinkDeviceDesc->toAudioPortConfig(&newPatch.sinks[i], &patch->sinks[i]); 2297 2298 if (srcDeviceDesc->mModule != sinkDeviceDesc->mModule) { 2299 // only one sink supported when connected devices across HW modules 2300 if (patch->num_sinks > 1) { 2301 return INVALID_OPERATION; 2302 } 2303 SortedVector<audio_io_handle_t> outputs = 2304 getOutputsForDevice(sinkDeviceDesc->mDeviceType, 2305 mOutputs); 2306 // if the sink device is reachable via an opened output stream, request to go via 2307 // this output stream by adding a second source to the patch description 2308 audio_io_handle_t output = selectOutput(outputs, AUDIO_OUTPUT_FLAG_NONE); 2309 if (output != AUDIO_IO_HANDLE_NONE) { 2310 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 2311 if (outputDesc->isDuplicated()) { 2312 return INVALID_OPERATION; 2313 } 2314 outputDesc->toAudioPortConfig(&newPatch.sources[1], &patch->sources[0]); 2315 newPatch.num_sources = 2; 2316 } 2317 } 2318 } 2319 // TODO: check from routing capabilities in config file and other conflicting patches 2320 2321 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 2322 if (index >= 0) { 2323 afPatchHandle = patchDesc->mAfPatchHandle; 2324 } 2325 2326 status_t status = mpClientInterface->createAudioPatch(&newPatch, 2327 &afPatchHandle, 2328 0); 2329 ALOGV("createAudioPatch() patch panel returned %d patchHandle %d", 2330 status, afPatchHandle); 2331 if (status == NO_ERROR) { 2332 if (index < 0) { 2333 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 2334 &newPatch, uid); 2335 addAudioPatch(patchDesc->mHandle, patchDesc); 2336 } else { 2337 patchDesc->mPatch = newPatch; 2338 } 2339 patchDesc->mAfPatchHandle = afPatchHandle; 2340 *handle = patchDesc->mHandle; 2341 nextAudioPortGeneration(); 2342 mpClientInterface->onAudioPatchListUpdate(); 2343 } else { 2344 ALOGW("createAudioPatch() patch panel could not connect device patch, error %d", 2345 status); 2346 return INVALID_OPERATION; 2347 } 2348 } else { 2349 return BAD_VALUE; 2350 } 2351 } else { 2352 return BAD_VALUE; 2353 } 2354 return NO_ERROR; 2355} 2356 2357status_t AudioPolicyManager::releaseAudioPatch(audio_patch_handle_t handle, 2358 uid_t uid) 2359{ 2360 ALOGV("releaseAudioPatch() patch %d", handle); 2361 2362 ssize_t index = mAudioPatches.indexOfKey(handle); 2363 2364 if (index < 0) { 2365 return BAD_VALUE; 2366 } 2367 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 2368 ALOGV("releaseAudioPatch() mUidCached %d patchDesc->mUid %d uid %d", 2369 mUidCached, patchDesc->mUid, uid); 2370 if (patchDesc->mUid != mUidCached && uid != patchDesc->mUid) { 2371 return INVALID_OPERATION; 2372 } 2373 2374 struct audio_patch *patch = &patchDesc->mPatch; 2375 patchDesc->mUid = mUidCached; 2376 if (patch->sources[0].type == AUDIO_PORT_TYPE_MIX) { 2377 sp<AudioOutputDescriptor> outputDesc = getOutputFromId(patch->sources[0].id); 2378 if (outputDesc == NULL) { 2379 ALOGV("releaseAudioPatch() output not found for id %d", patch->sources[0].id); 2380 return BAD_VALUE; 2381 } 2382 2383 setOutputDevice(outputDesc->mIoHandle, 2384 getNewOutputDevice(outputDesc->mIoHandle, true /*fromCache*/), 2385 true, 2386 0, 2387 NULL); 2388 } else if (patch->sources[0].type == AUDIO_PORT_TYPE_DEVICE) { 2389 if (patch->sinks[0].type == AUDIO_PORT_TYPE_MIX) { 2390 sp<AudioInputDescriptor> inputDesc = getInputFromId(patch->sinks[0].id); 2391 if (inputDesc == NULL) { 2392 ALOGV("releaseAudioPatch() input not found for id %d", patch->sinks[0].id); 2393 return BAD_VALUE; 2394 } 2395 setInputDevice(inputDesc->mIoHandle, 2396 getNewInputDevice(inputDesc->mIoHandle), 2397 true, 2398 NULL); 2399 } else if (patch->sinks[0].type == AUDIO_PORT_TYPE_DEVICE) { 2400 audio_patch_handle_t afPatchHandle = patchDesc->mAfPatchHandle; 2401 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 2402 ALOGV("releaseAudioPatch() patch panel returned %d patchHandle %d", 2403 status, patchDesc->mAfPatchHandle); 2404 removeAudioPatch(patchDesc->mHandle); 2405 nextAudioPortGeneration(); 2406 mpClientInterface->onAudioPatchListUpdate(); 2407 } else { 2408 return BAD_VALUE; 2409 } 2410 } else { 2411 return BAD_VALUE; 2412 } 2413 return NO_ERROR; 2414} 2415 2416status_t AudioPolicyManager::listAudioPatches(unsigned int *num_patches, 2417 struct audio_patch *patches, 2418 unsigned int *generation) 2419{ 2420 if (num_patches == NULL || (*num_patches != 0 && patches == NULL) || 2421 generation == NULL) { 2422 return BAD_VALUE; 2423 } 2424 ALOGV("listAudioPatches() num_patches %d patches %p available patches %zu", 2425 *num_patches, patches, mAudioPatches.size()); 2426 if (patches == NULL) { 2427 *num_patches = 0; 2428 } 2429 2430 size_t patchesWritten = 0; 2431 size_t patchesMax = *num_patches; 2432 for (size_t i = 0; 2433 i < mAudioPatches.size() && patchesWritten < patchesMax; i++) { 2434 patches[patchesWritten] = mAudioPatches[i]->mPatch; 2435 patches[patchesWritten++].id = mAudioPatches[i]->mHandle; 2436 ALOGV("listAudioPatches() patch %zu num_sources %d num_sinks %d", 2437 i, mAudioPatches[i]->mPatch.num_sources, mAudioPatches[i]->mPatch.num_sinks); 2438 } 2439 *num_patches = mAudioPatches.size(); 2440 2441 *generation = curAudioPortGeneration(); 2442 ALOGV("listAudioPatches() got %zu patches needed %d", patchesWritten, *num_patches); 2443 return NO_ERROR; 2444} 2445 2446status_t AudioPolicyManager::setAudioPortConfig(const struct audio_port_config *config) 2447{ 2448 ALOGV("setAudioPortConfig()"); 2449 2450 if (config == NULL) { 2451 return BAD_VALUE; 2452 } 2453 ALOGV("setAudioPortConfig() on port handle %d", config->id); 2454 // Only support gain configuration for now 2455 if (config->config_mask != AUDIO_PORT_CONFIG_GAIN) { 2456 return INVALID_OPERATION; 2457 } 2458 2459 sp<AudioPortConfig> audioPortConfig; 2460 if (config->type == AUDIO_PORT_TYPE_MIX) { 2461 if (config->role == AUDIO_PORT_ROLE_SOURCE) { 2462 sp<AudioOutputDescriptor> outputDesc = getOutputFromId(config->id); 2463 if (outputDesc == NULL) { 2464 return BAD_VALUE; 2465 } 2466 ALOG_ASSERT(!outputDesc->isDuplicated(), 2467 "setAudioPortConfig() called on duplicated output %d", 2468 outputDesc->mIoHandle); 2469 audioPortConfig = outputDesc; 2470 } else if (config->role == AUDIO_PORT_ROLE_SINK) { 2471 sp<AudioInputDescriptor> inputDesc = getInputFromId(config->id); 2472 if (inputDesc == NULL) { 2473 return BAD_VALUE; 2474 } 2475 audioPortConfig = inputDesc; 2476 } else { 2477 return BAD_VALUE; 2478 } 2479 } else if (config->type == AUDIO_PORT_TYPE_DEVICE) { 2480 sp<DeviceDescriptor> deviceDesc; 2481 if (config->role == AUDIO_PORT_ROLE_SOURCE) { 2482 deviceDesc = mAvailableInputDevices.getDeviceFromId(config->id); 2483 } else if (config->role == AUDIO_PORT_ROLE_SINK) { 2484 deviceDesc = mAvailableOutputDevices.getDeviceFromId(config->id); 2485 } else { 2486 return BAD_VALUE; 2487 } 2488 if (deviceDesc == NULL) { 2489 return BAD_VALUE; 2490 } 2491 audioPortConfig = deviceDesc; 2492 } else { 2493 return BAD_VALUE; 2494 } 2495 2496 struct audio_port_config backupConfig; 2497 status_t status = audioPortConfig->applyAudioPortConfig(config, &backupConfig); 2498 if (status == NO_ERROR) { 2499 struct audio_port_config newConfig; 2500 audioPortConfig->toAudioPortConfig(&newConfig, config); 2501 status = mpClientInterface->setAudioPortConfig(&newConfig, 0); 2502 } 2503 if (status != NO_ERROR) { 2504 audioPortConfig->applyAudioPortConfig(&backupConfig); 2505 } 2506 2507 return status; 2508} 2509 2510void AudioPolicyManager::clearAudioPatches(uid_t uid) 2511{ 2512 for (ssize_t i = 0; i < (ssize_t)mAudioPatches.size(); i++) { 2513 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(i); 2514 if (patchDesc->mUid == uid) { 2515 // releaseAudioPatch() removes the patch from mAudioPatches 2516 if (releaseAudioPatch(mAudioPatches.keyAt(i), uid) == NO_ERROR) { 2517 i--; 2518 } 2519 } 2520 } 2521} 2522 2523status_t AudioPolicyManager::acquireSoundTriggerSession(audio_session_t *session, 2524 audio_io_handle_t *ioHandle, 2525 audio_devices_t *device) 2526{ 2527 *session = (audio_session_t)mpClientInterface->newAudioUniqueId(); 2528 *ioHandle = (audio_io_handle_t)mpClientInterface->newAudioUniqueId(); 2529 *device = getDeviceForInputSource(AUDIO_SOURCE_HOTWORD); 2530 2531 mSoundTriggerSessions.add(*session, *ioHandle); 2532 2533 return NO_ERROR; 2534} 2535 2536status_t AudioPolicyManager::releaseSoundTriggerSession(audio_session_t session) 2537{ 2538 ssize_t index = mSoundTriggerSessions.indexOfKey(session); 2539 if (index < 0) { 2540 ALOGW("acquireSoundTriggerSession() session %d not registered", session); 2541 return BAD_VALUE; 2542 } 2543 2544 mSoundTriggerSessions.removeItem(session); 2545 return NO_ERROR; 2546} 2547 2548status_t AudioPolicyManager::addAudioPatch(audio_patch_handle_t handle, 2549 const sp<AudioPatch>& patch) 2550{ 2551 ssize_t index = mAudioPatches.indexOfKey(handle); 2552 2553 if (index >= 0) { 2554 ALOGW("addAudioPatch() patch %d already in", handle); 2555 return ALREADY_EXISTS; 2556 } 2557 mAudioPatches.add(handle, patch); 2558 ALOGV("addAudioPatch() handle %d af handle %d num_sources %d num_sinks %d source handle %d" 2559 "sink handle %d", 2560 handle, patch->mAfPatchHandle, patch->mPatch.num_sources, patch->mPatch.num_sinks, 2561 patch->mPatch.sources[0].id, patch->mPatch.sinks[0].id); 2562 return NO_ERROR; 2563} 2564 2565status_t AudioPolicyManager::removeAudioPatch(audio_patch_handle_t handle) 2566{ 2567 ssize_t index = mAudioPatches.indexOfKey(handle); 2568 2569 if (index < 0) { 2570 ALOGW("removeAudioPatch() patch %d not in", handle); 2571 return ALREADY_EXISTS; 2572 } 2573 ALOGV("removeAudioPatch() handle %d af handle %d", handle, 2574 mAudioPatches.valueAt(index)->mAfPatchHandle); 2575 mAudioPatches.removeItemsAt(index); 2576 return NO_ERROR; 2577} 2578 2579// ---------------------------------------------------------------------------- 2580// AudioPolicyManager 2581// ---------------------------------------------------------------------------- 2582 2583uint32_t AudioPolicyManager::nextUniqueId() 2584{ 2585 return android_atomic_inc(&mNextUniqueId); 2586} 2587 2588uint32_t AudioPolicyManager::nextAudioPortGeneration() 2589{ 2590 return android_atomic_inc(&mAudioPortGeneration); 2591} 2592 2593AudioPolicyManager::AudioPolicyManager(AudioPolicyClientInterface *clientInterface) 2594 : 2595#ifdef AUDIO_POLICY_TEST 2596 Thread(false), 2597#endif //AUDIO_POLICY_TEST 2598 mPrimaryOutput((audio_io_handle_t)0), 2599 mPhoneState(AUDIO_MODE_NORMAL), 2600 mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f), 2601 mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0), 2602 mA2dpSuspended(false), 2603 mSpeakerDrcEnabled(false), mNextUniqueId(1), 2604 mAudioPortGeneration(1) 2605{ 2606 mUidCached = getuid(); 2607 mpClientInterface = clientInterface; 2608 2609 for (int i = 0; i < AUDIO_POLICY_FORCE_USE_CNT; i++) { 2610 mForceUse[i] = AUDIO_POLICY_FORCE_NONE; 2611 } 2612 2613 mDefaultOutputDevice = new DeviceDescriptor(String8(""), AUDIO_DEVICE_OUT_SPEAKER); 2614 if (loadAudioPolicyConfig(AUDIO_POLICY_VENDOR_CONFIG_FILE) != NO_ERROR) { 2615 if (loadAudioPolicyConfig(AUDIO_POLICY_CONFIG_FILE) != NO_ERROR) { 2616 ALOGE("could not load audio policy configuration file, setting defaults"); 2617 defaultAudioPolicyConfig(); 2618 } 2619 } 2620 // mAvailableOutputDevices and mAvailableInputDevices now contain all attached devices 2621 2622 // must be done after reading the policy 2623 initializeVolumeCurves(); 2624 2625 // open all output streams needed to access attached devices 2626 audio_devices_t outputDeviceTypes = mAvailableOutputDevices.types(); 2627 audio_devices_t inputDeviceTypes = mAvailableInputDevices.types() & ~AUDIO_DEVICE_BIT_IN; 2628 for (size_t i = 0; i < mHwModules.size(); i++) { 2629 mHwModules[i]->mHandle = mpClientInterface->loadHwModule(mHwModules[i]->mName); 2630 if (mHwModules[i]->mHandle == 0) { 2631 ALOGW("could not open HW module %s", mHwModules[i]->mName); 2632 continue; 2633 } 2634 // open all output streams needed to access attached devices 2635 // except for direct output streams that are only opened when they are actually 2636 // required by an app. 2637 // This also validates mAvailableOutputDevices list 2638 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 2639 { 2640 const sp<IOProfile> outProfile = mHwModules[i]->mOutputProfiles[j]; 2641 2642 if (outProfile->mSupportedDevices.isEmpty()) { 2643 ALOGW("Output profile contains no device on module %s", mHwModules[i]->mName); 2644 continue; 2645 } 2646 2647 audio_devices_t profileType = outProfile->mSupportedDevices.types(); 2648 if ((profileType & mDefaultOutputDevice->mDeviceType) != AUDIO_DEVICE_NONE) { 2649 profileType = mDefaultOutputDevice->mDeviceType; 2650 } else { 2651 profileType = outProfile->mSupportedDevices[0]->mDeviceType; 2652 } 2653 if ((profileType & outputDeviceTypes) && 2654 ((outProfile->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) == 0)) { 2655 sp<AudioOutputDescriptor> outputDesc = new AudioOutputDescriptor(outProfile); 2656 2657 outputDesc->mDevice = profileType; 2658 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 2659 config.sample_rate = outputDesc->mSamplingRate; 2660 config.channel_mask = outputDesc->mChannelMask; 2661 config.format = outputDesc->mFormat; 2662 audio_io_handle_t output = AUDIO_IO_HANDLE_NONE; 2663 status_t status = mpClientInterface->openOutput(outProfile->mModule->mHandle, 2664 &output, 2665 &config, 2666 &outputDesc->mDevice, 2667 String8(""), 2668 &outputDesc->mLatency, 2669 outputDesc->mFlags); 2670 2671 if (status != NO_ERROR) { 2672 ALOGW("Cannot open output stream for device %08x on hw module %s", 2673 outputDesc->mDevice, 2674 mHwModules[i]->mName); 2675 } else { 2676 outputDesc->mSamplingRate = config.sample_rate; 2677 outputDesc->mChannelMask = config.channel_mask; 2678 outputDesc->mFormat = config.format; 2679 2680 for (size_t k = 0; k < outProfile->mSupportedDevices.size(); k++) { 2681 audio_devices_t type = outProfile->mSupportedDevices[k]->mDeviceType; 2682 ssize_t index = 2683 mAvailableOutputDevices.indexOf(outProfile->mSupportedDevices[k]); 2684 // give a valid ID to an attached device once confirmed it is reachable 2685 if ((index >= 0) && (mAvailableOutputDevices[index]->mId == 0)) { 2686 mAvailableOutputDevices[index]->mId = nextUniqueId(); 2687 mAvailableOutputDevices[index]->mModule = mHwModules[i]; 2688 } 2689 } 2690 if (mPrimaryOutput == 0 && 2691 outProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) { 2692 mPrimaryOutput = output; 2693 } 2694 addOutput(output, outputDesc); 2695 setOutputDevice(output, 2696 outputDesc->mDevice, 2697 true); 2698 } 2699 } 2700 } 2701 // open input streams needed to access attached devices to validate 2702 // mAvailableInputDevices list 2703 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) 2704 { 2705 const sp<IOProfile> inProfile = mHwModules[i]->mInputProfiles[j]; 2706 2707 if (inProfile->mSupportedDevices.isEmpty()) { 2708 ALOGW("Input profile contains no device on module %s", mHwModules[i]->mName); 2709 continue; 2710 } 2711 2712 audio_devices_t profileType = inProfile->mSupportedDevices[0]->mDeviceType; 2713 if (profileType & inputDeviceTypes) { 2714 sp<AudioInputDescriptor> inputDesc = new AudioInputDescriptor(inProfile); 2715 2716 inputDesc->mInputSource = AUDIO_SOURCE_MIC; 2717 inputDesc->mDevice = profileType; 2718 2719 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 2720 config.sample_rate = inputDesc->mSamplingRate; 2721 config.channel_mask = inputDesc->mChannelMask; 2722 config.format = inputDesc->mFormat; 2723 audio_io_handle_t input = AUDIO_IO_HANDLE_NONE; 2724 status_t status = mpClientInterface->openInput(inProfile->mModule->mHandle, 2725 &input, 2726 &config, 2727 &inputDesc->mDevice, 2728 String8(""), 2729 AUDIO_SOURCE_MIC, 2730 AUDIO_INPUT_FLAG_NONE); 2731 2732 if (status == NO_ERROR) { 2733 for (size_t k = 0; k < inProfile->mSupportedDevices.size(); k++) { 2734 audio_devices_t type = inProfile->mSupportedDevices[k]->mDeviceType; 2735 ssize_t index = 2736 mAvailableInputDevices.indexOf(inProfile->mSupportedDevices[k]); 2737 // give a valid ID to an attached device once confirmed it is reachable 2738 if ((index >= 0) && (mAvailableInputDevices[index]->mId == 0)) { 2739 mAvailableInputDevices[index]->mId = nextUniqueId(); 2740 mAvailableInputDevices[index]->mModule = mHwModules[i]; 2741 } 2742 } 2743 mpClientInterface->closeInput(input); 2744 } else { 2745 ALOGW("Cannot open input stream for device %08x on hw module %s", 2746 inputDesc->mDevice, 2747 mHwModules[i]->mName); 2748 } 2749 } 2750 } 2751 } 2752 // make sure all attached devices have been allocated a unique ID 2753 for (size_t i = 0; i < mAvailableOutputDevices.size();) { 2754 if (mAvailableOutputDevices[i]->mId == 0) { 2755 ALOGW("Input device %08x unreachable", mAvailableOutputDevices[i]->mDeviceType); 2756 mAvailableOutputDevices.remove(mAvailableOutputDevices[i]); 2757 continue; 2758 } 2759 i++; 2760 } 2761 for (size_t i = 0; i < mAvailableInputDevices.size();) { 2762 if (mAvailableInputDevices[i]->mId == 0) { 2763 ALOGW("Input device %08x unreachable", mAvailableInputDevices[i]->mDeviceType); 2764 mAvailableInputDevices.remove(mAvailableInputDevices[i]); 2765 continue; 2766 } 2767 i++; 2768 } 2769 // make sure default device is reachable 2770 if (mAvailableOutputDevices.indexOf(mDefaultOutputDevice) < 0) { 2771 ALOGE("Default device %08x is unreachable", mDefaultOutputDevice->mDeviceType); 2772 } 2773 2774 ALOGE_IF((mPrimaryOutput == 0), "Failed to open primary output"); 2775 2776 updateDevicesAndOutputs(); 2777 2778#ifdef AUDIO_POLICY_TEST 2779 if (mPrimaryOutput != 0) { 2780 AudioParameter outputCmd = AudioParameter(); 2781 outputCmd.addInt(String8("set_id"), 0); 2782 mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString()); 2783 2784 mTestDevice = AUDIO_DEVICE_OUT_SPEAKER; 2785 mTestSamplingRate = 44100; 2786 mTestFormat = AUDIO_FORMAT_PCM_16_BIT; 2787 mTestChannels = AUDIO_CHANNEL_OUT_STEREO; 2788 mTestLatencyMs = 0; 2789 mCurOutput = 0; 2790 mDirectOutput = false; 2791 for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { 2792 mTestOutputs[i] = 0; 2793 } 2794 2795 const size_t SIZE = 256; 2796 char buffer[SIZE]; 2797 snprintf(buffer, SIZE, "AudioPolicyManagerTest"); 2798 run(buffer, ANDROID_PRIORITY_AUDIO); 2799 } 2800#endif //AUDIO_POLICY_TEST 2801} 2802 2803AudioPolicyManager::~AudioPolicyManager() 2804{ 2805#ifdef AUDIO_POLICY_TEST 2806 exit(); 2807#endif //AUDIO_POLICY_TEST 2808 for (size_t i = 0; i < mOutputs.size(); i++) { 2809 mpClientInterface->closeOutput(mOutputs.keyAt(i)); 2810 } 2811 for (size_t i = 0; i < mInputs.size(); i++) { 2812 mpClientInterface->closeInput(mInputs.keyAt(i)); 2813 } 2814 mAvailableOutputDevices.clear(); 2815 mAvailableInputDevices.clear(); 2816 mOutputs.clear(); 2817 mInputs.clear(); 2818 mHwModules.clear(); 2819} 2820 2821status_t AudioPolicyManager::initCheck() 2822{ 2823 return (mPrimaryOutput == 0) ? NO_INIT : NO_ERROR; 2824} 2825 2826#ifdef AUDIO_POLICY_TEST 2827bool AudioPolicyManager::threadLoop() 2828{ 2829 ALOGV("entering threadLoop()"); 2830 while (!exitPending()) 2831 { 2832 String8 command; 2833 int valueInt; 2834 String8 value; 2835 2836 Mutex::Autolock _l(mLock); 2837 mWaitWorkCV.waitRelative(mLock, milliseconds(50)); 2838 2839 command = mpClientInterface->getParameters(0, String8("test_cmd_policy")); 2840 AudioParameter param = AudioParameter(command); 2841 2842 if (param.getInt(String8("test_cmd_policy"), valueInt) == NO_ERROR && 2843 valueInt != 0) { 2844 ALOGV("Test command %s received", command.string()); 2845 String8 target; 2846 if (param.get(String8("target"), target) != NO_ERROR) { 2847 target = "Manager"; 2848 } 2849 if (param.getInt(String8("test_cmd_policy_output"), valueInt) == NO_ERROR) { 2850 param.remove(String8("test_cmd_policy_output")); 2851 mCurOutput = valueInt; 2852 } 2853 if (param.get(String8("test_cmd_policy_direct"), value) == NO_ERROR) { 2854 param.remove(String8("test_cmd_policy_direct")); 2855 if (value == "false") { 2856 mDirectOutput = false; 2857 } else if (value == "true") { 2858 mDirectOutput = true; 2859 } 2860 } 2861 if (param.getInt(String8("test_cmd_policy_input"), valueInt) == NO_ERROR) { 2862 param.remove(String8("test_cmd_policy_input")); 2863 mTestInput = valueInt; 2864 } 2865 2866 if (param.get(String8("test_cmd_policy_format"), value) == NO_ERROR) { 2867 param.remove(String8("test_cmd_policy_format")); 2868 int format = AUDIO_FORMAT_INVALID; 2869 if (value == "PCM 16 bits") { 2870 format = AUDIO_FORMAT_PCM_16_BIT; 2871 } else if (value == "PCM 8 bits") { 2872 format = AUDIO_FORMAT_PCM_8_BIT; 2873 } else if (value == "Compressed MP3") { 2874 format = AUDIO_FORMAT_MP3; 2875 } 2876 if (format != AUDIO_FORMAT_INVALID) { 2877 if (target == "Manager") { 2878 mTestFormat = format; 2879 } else if (mTestOutputs[mCurOutput] != 0) { 2880 AudioParameter outputParam = AudioParameter(); 2881 outputParam.addInt(String8("format"), format); 2882 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2883 } 2884 } 2885 } 2886 if (param.get(String8("test_cmd_policy_channels"), value) == NO_ERROR) { 2887 param.remove(String8("test_cmd_policy_channels")); 2888 int channels = 0; 2889 2890 if (value == "Channels Stereo") { 2891 channels = AUDIO_CHANNEL_OUT_STEREO; 2892 } else if (value == "Channels Mono") { 2893 channels = AUDIO_CHANNEL_OUT_MONO; 2894 } 2895 if (channels != 0) { 2896 if (target == "Manager") { 2897 mTestChannels = channels; 2898 } else if (mTestOutputs[mCurOutput] != 0) { 2899 AudioParameter outputParam = AudioParameter(); 2900 outputParam.addInt(String8("channels"), channels); 2901 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2902 } 2903 } 2904 } 2905 if (param.getInt(String8("test_cmd_policy_sampleRate"), valueInt) == NO_ERROR) { 2906 param.remove(String8("test_cmd_policy_sampleRate")); 2907 if (valueInt >= 0 && valueInt <= 96000) { 2908 int samplingRate = valueInt; 2909 if (target == "Manager") { 2910 mTestSamplingRate = samplingRate; 2911 } else if (mTestOutputs[mCurOutput] != 0) { 2912 AudioParameter outputParam = AudioParameter(); 2913 outputParam.addInt(String8("sampling_rate"), samplingRate); 2914 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 2915 } 2916 } 2917 } 2918 2919 if (param.get(String8("test_cmd_policy_reopen"), value) == NO_ERROR) { 2920 param.remove(String8("test_cmd_policy_reopen")); 2921 2922 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(mPrimaryOutput); 2923 mpClientInterface->closeOutput(mPrimaryOutput); 2924 2925 audio_module_handle_t moduleHandle = outputDesc->mModule->mHandle; 2926 2927 mOutputs.removeItem(mPrimaryOutput); 2928 2929 sp<AudioOutputDescriptor> outputDesc = new AudioOutputDescriptor(NULL); 2930 outputDesc->mDevice = AUDIO_DEVICE_OUT_SPEAKER; 2931 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 2932 config.sample_rate = outputDesc->mSamplingRate; 2933 config.channel_mask = outputDesc->mChannelMask; 2934 config.format = outputDesc->mFormat; 2935 status_t status = mpClientInterface->openOutput(moduleHandle, 2936 &mPrimaryOutput, 2937 &config, 2938 &outputDesc->mDevice, 2939 String8(""), 2940 &outputDesc->mLatency, 2941 outputDesc->mFlags); 2942 if (status != NO_ERROR) { 2943 ALOGE("Failed to reopen hardware output stream, " 2944 "samplingRate: %d, format %d, channels %d", 2945 outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannelMask); 2946 } else { 2947 outputDesc->mSamplingRate = config.sample_rate; 2948 outputDesc->mChannelMask = config.channel_mask; 2949 outputDesc->mFormat = config.format; 2950 AudioParameter outputCmd = AudioParameter(); 2951 outputCmd.addInt(String8("set_id"), 0); 2952 mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString()); 2953 addOutput(mPrimaryOutput, outputDesc); 2954 } 2955 } 2956 2957 2958 mpClientInterface->setParameters(0, String8("test_cmd_policy=")); 2959 } 2960 } 2961 return false; 2962} 2963 2964void AudioPolicyManager::exit() 2965{ 2966 { 2967 AutoMutex _l(mLock); 2968 requestExit(); 2969 mWaitWorkCV.signal(); 2970 } 2971 requestExitAndWait(); 2972} 2973 2974int AudioPolicyManager::testOutputIndex(audio_io_handle_t output) 2975{ 2976 for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { 2977 if (output == mTestOutputs[i]) return i; 2978 } 2979 return 0; 2980} 2981#endif //AUDIO_POLICY_TEST 2982 2983// --- 2984 2985void AudioPolicyManager::addOutput(audio_io_handle_t output, sp<AudioOutputDescriptor> outputDesc) 2986{ 2987 outputDesc->mIoHandle = output; 2988 outputDesc->mId = nextUniqueId(); 2989 mOutputs.add(output, outputDesc); 2990 nextAudioPortGeneration(); 2991} 2992 2993void AudioPolicyManager::addInput(audio_io_handle_t input, sp<AudioInputDescriptor> inputDesc) 2994{ 2995 inputDesc->mIoHandle = input; 2996 inputDesc->mId = nextUniqueId(); 2997 mInputs.add(input, inputDesc); 2998 nextAudioPortGeneration(); 2999} 3000 3001void AudioPolicyManager::findIoHandlesByAddress(sp<AudioOutputDescriptor> desc /*in*/, 3002 const String8 address /*in*/, 3003 SortedVector<audio_io_handle_t>& outputs /*out*/) { 3004 // look for a match on the given address on the addresses of the outputs: 3005 // find the address by finding the patch that maps to this output 3006 ssize_t patchIdx = mAudioPatches.indexOfKey(desc->mPatchHandle); 3007 //ALOGV(" inspecting output %d (patch %d) for supported device=0x%x", 3008 // outputIdx, patchIdx, desc->mProfile->mSupportedDevices.types()); 3009 if (patchIdx >= 0) { 3010 const sp<AudioPatch> patchDesc = mAudioPatches.valueAt(patchIdx); 3011 const int numSinks = patchDesc->mPatch.num_sinks; 3012 for (ssize_t j=0; j < numSinks; j++) { 3013 if (patchDesc->mPatch.sinks[j].type == AUDIO_PORT_TYPE_DEVICE) { 3014 const char* patchAddr = 3015 patchDesc->mPatch.sinks[j].ext.device.address; 3016 if (strncmp(patchAddr, 3017 address.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN) == 0) { 3018 ALOGV("findIoHandlesByAddress(): adding opened output %d on same address %s", 3019 desc->mIoHandle, patchDesc->mPatch.sinks[j].ext.device.address); 3020 outputs.add(desc->mIoHandle); 3021 break; 3022 } 3023 } 3024 } 3025 } 3026} 3027 3028status_t AudioPolicyManager::checkOutputsForDevice(const sp<DeviceDescriptor> devDesc, 3029 audio_policy_dev_state_t state, 3030 SortedVector<audio_io_handle_t>& outputs, 3031 const String8 address) 3032{ 3033 audio_devices_t device = devDesc->mDeviceType; 3034 sp<AudioOutputDescriptor> desc; 3035 // erase all current sample rates, formats and channel masks 3036 devDesc->clearCapabilities(); 3037 3038 if (state == AUDIO_POLICY_DEVICE_STATE_AVAILABLE) { 3039 // first list already open outputs that can be routed to this device 3040 for (size_t i = 0; i < mOutputs.size(); i++) { 3041 desc = mOutputs.valueAt(i); 3042 if (!desc->isDuplicated() && (desc->mProfile->mSupportedDevices.types() & device)) { 3043 if (!deviceDistinguishesOnAddress(device)) { 3044 ALOGV("checkOutputsForDevice(): adding opened output %d", mOutputs.keyAt(i)); 3045 outputs.add(mOutputs.keyAt(i)); 3046 } else { 3047 ALOGV(" checking address match due to device 0x%x", device); 3048 findIoHandlesByAddress(desc, address, outputs); 3049 } 3050 } 3051 } 3052 // then look for output profiles that can be routed to this device 3053 SortedVector< sp<IOProfile> > profiles; 3054 for (size_t i = 0; i < mHwModules.size(); i++) 3055 { 3056 if (mHwModules[i]->mHandle == 0) { 3057 continue; 3058 } 3059 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 3060 { 3061 if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices.types() & device) { 3062 ALOGV("checkOutputsForDevice(): adding profile %zu from module %zu", j, i); 3063 profiles.add(mHwModules[i]->mOutputProfiles[j]); 3064 } 3065 } 3066 } 3067 3068 ALOGV(" found %d profiles, %d outputs", profiles.size(), outputs.size()); 3069 3070 if (profiles.isEmpty() && outputs.isEmpty()) { 3071 ALOGW("checkOutputsForDevice(): No output available for device %04x", device); 3072 return BAD_VALUE; 3073 } 3074 3075 // open outputs for matching profiles if needed. Direct outputs are also opened to 3076 // query for dynamic parameters and will be closed later by setDeviceConnectionState() 3077 for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) { 3078 sp<IOProfile> profile = profiles[profile_index]; 3079 3080 // nothing to do if one output is already opened for this profile 3081 size_t j; 3082 for (j = 0; j < outputs.size(); j++) { 3083 desc = mOutputs.valueFor(outputs.itemAt(j)); 3084 if (!desc->isDuplicated() && desc->mProfile == profile) { 3085 // matching profile: save the sample rates, format and channel masks supported 3086 // by the profile in our device descriptor 3087 devDesc->importAudioPort(profile); 3088 break; 3089 } 3090 } 3091 if (j != outputs.size()) { 3092 continue; 3093 } 3094 3095 ALOGV("opening output for device %08x with params %s profile %p", 3096 device, address.string(), profile.get()); 3097 desc = new AudioOutputDescriptor(profile); 3098 desc->mDevice = device; 3099 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 3100 config.sample_rate = desc->mSamplingRate; 3101 config.channel_mask = desc->mChannelMask; 3102 config.format = desc->mFormat; 3103 config.offload_info.sample_rate = desc->mSamplingRate; 3104 config.offload_info.channel_mask = desc->mChannelMask; 3105 config.offload_info.format = desc->mFormat; 3106 audio_io_handle_t output = AUDIO_IO_HANDLE_NONE; 3107 status_t status = mpClientInterface->openOutput(profile->mModule->mHandle, 3108 &output, 3109 &config, 3110 &desc->mDevice, 3111 address, 3112 &desc->mLatency, 3113 desc->mFlags); 3114 if (status == NO_ERROR) { 3115 desc->mSamplingRate = config.sample_rate; 3116 desc->mChannelMask = config.channel_mask; 3117 desc->mFormat = config.format; 3118 3119 // Here is where the out_set_parameters() for card & device gets called 3120 if (!address.isEmpty()) { 3121 char *param = audio_device_address_to_parameter(device, address); 3122 mpClientInterface->setParameters(output, String8(param)); 3123 free(param); 3124 } 3125 3126 // Here is where we step through and resolve any "dynamic" fields 3127 String8 reply; 3128 char *value; 3129 if (profile->mSamplingRates[0] == 0) { 3130 reply = mpClientInterface->getParameters(output, 3131 String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES)); 3132 ALOGV("checkOutputsForDevice() supported sampling rates %s", 3133 reply.string()); 3134 value = strpbrk((char *)reply.string(), "="); 3135 if (value != NULL) { 3136 profile->loadSamplingRates(value + 1); 3137 } 3138 } 3139 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 3140 reply = mpClientInterface->getParameters(output, 3141 String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS)); 3142 ALOGV("checkOutputsForDevice() supported formats %s", 3143 reply.string()); 3144 value = strpbrk((char *)reply.string(), "="); 3145 if (value != NULL) { 3146 profile->loadFormats(value + 1); 3147 } 3148 } 3149 if (profile->mChannelMasks[0] == 0) { 3150 reply = mpClientInterface->getParameters(output, 3151 String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS)); 3152 ALOGV("checkOutputsForDevice() supported channel masks %s", 3153 reply.string()); 3154 value = strpbrk((char *)reply.string(), "="); 3155 if (value != NULL) { 3156 profile->loadOutChannels(value + 1); 3157 } 3158 } 3159 if (((profile->mSamplingRates[0] == 0) && 3160 (profile->mSamplingRates.size() < 2)) || 3161 ((profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) && 3162 (profile->mFormats.size() < 2)) || 3163 ((profile->mChannelMasks[0] == 0) && 3164 (profile->mChannelMasks.size() < 2))) { 3165 ALOGW("checkOutputsForDevice() missing param"); 3166 mpClientInterface->closeOutput(output); 3167 output = AUDIO_IO_HANDLE_NONE; 3168 } else if (profile->mSamplingRates[0] == 0 || profile->mFormats[0] == 0 || 3169 profile->mChannelMasks[0] == 0) { 3170 mpClientInterface->closeOutput(output); 3171 config.sample_rate = profile->pickSamplingRate(); 3172 config.channel_mask = profile->pickChannelMask(); 3173 config.format = profile->pickFormat(); 3174 config.offload_info.sample_rate = config.sample_rate; 3175 config.offload_info.channel_mask = config.channel_mask; 3176 config.offload_info.format = config.format; 3177 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 } else { 3189 output = AUDIO_IO_HANDLE_NONE; 3190 } 3191 } 3192 3193 if (output != AUDIO_IO_HANDLE_NONE) { 3194 addOutput(output, desc); 3195 if ((desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) == 0) { 3196 audio_io_handle_t duplicatedOutput = AUDIO_IO_HANDLE_NONE; 3197 3198 // set initial stream volume for device 3199 applyStreamVolumes(output, device, 0, true); 3200 3201 //TODO: configure audio effect output stage here 3202 3203 // open a duplicating output thread for the new output and the primary output 3204 duplicatedOutput = mpClientInterface->openDuplicateOutput(output, 3205 mPrimaryOutput); 3206 if (duplicatedOutput != AUDIO_IO_HANDLE_NONE) { 3207 // add duplicated output descriptor 3208 sp<AudioOutputDescriptor> dupOutputDesc = 3209 new AudioOutputDescriptor(NULL); 3210 dupOutputDesc->mOutput1 = mOutputs.valueFor(mPrimaryOutput); 3211 dupOutputDesc->mOutput2 = mOutputs.valueFor(output); 3212 dupOutputDesc->mSamplingRate = desc->mSamplingRate; 3213 dupOutputDesc->mFormat = desc->mFormat; 3214 dupOutputDesc->mChannelMask = desc->mChannelMask; 3215 dupOutputDesc->mLatency = desc->mLatency; 3216 addOutput(duplicatedOutput, dupOutputDesc); 3217 applyStreamVolumes(duplicatedOutput, device, 0, true); 3218 } else { 3219 ALOGW("checkOutputsForDevice() could not open dup output for %d and %d", 3220 mPrimaryOutput, output); 3221 mpClientInterface->closeOutput(output); 3222 mOutputs.removeItem(output); 3223 nextAudioPortGeneration(); 3224 output = AUDIO_IO_HANDLE_NONE; 3225 } 3226 } 3227 } 3228 } else { 3229 output = AUDIO_IO_HANDLE_NONE; 3230 } 3231 if (output == AUDIO_IO_HANDLE_NONE) { 3232 ALOGW("checkOutputsForDevice() could not open output for device %x", device); 3233 profiles.removeAt(profile_index); 3234 profile_index--; 3235 } else { 3236 outputs.add(output); 3237 devDesc->importAudioPort(profile); 3238 3239 if (deviceDistinguishesOnAddress(device)) { 3240 ALOGV("checkOutputsForDevice(): setOutputDevice(dev=0x%x, addr=%s)", 3241 device, address.string()); 3242 setOutputDevice(output, device, true/*force*/, 0/*delay*/, 3243 NULL/*patch handle*/, address.string()); 3244 } 3245 ALOGV("checkOutputsForDevice(): adding output %d", output); 3246 } 3247 } 3248 3249 if (profiles.isEmpty()) { 3250 ALOGW("checkOutputsForDevice(): No output available for device %04x", device); 3251 return BAD_VALUE; 3252 } 3253 } else { // Disconnect 3254 // check if one opened output is not needed any more after disconnecting one device 3255 for (size_t i = 0; i < mOutputs.size(); i++) { 3256 desc = mOutputs.valueAt(i); 3257 if (!desc->isDuplicated()) { 3258 if (!(desc->mProfile->mSupportedDevices.types() 3259 & mAvailableOutputDevices.types())) { 3260 ALOGV("checkOutputsForDevice(): disconnecting adding output %d", 3261 mOutputs.keyAt(i)); 3262 outputs.add(mOutputs.keyAt(i)); 3263 } else if (deviceDistinguishesOnAddress(device) && 3264 // exact match on device 3265 (desc->mProfile->mSupportedDevices.types() == device)) { 3266 findIoHandlesByAddress(desc, address, outputs); 3267 } 3268 } 3269 } 3270 // Clear any profiles associated with the disconnected device. 3271 for (size_t i = 0; i < mHwModules.size(); i++) 3272 { 3273 if (mHwModules[i]->mHandle == 0) { 3274 continue; 3275 } 3276 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 3277 { 3278 sp<IOProfile> profile = mHwModules[i]->mOutputProfiles[j]; 3279 if (profile->mSupportedDevices.types() & device) { 3280 ALOGV("checkOutputsForDevice(): " 3281 "clearing direct output profile %zu on module %zu", j, i); 3282 if (profile->mSamplingRates[0] == 0) { 3283 profile->mSamplingRates.clear(); 3284 profile->mSamplingRates.add(0); 3285 } 3286 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 3287 profile->mFormats.clear(); 3288 profile->mFormats.add(AUDIO_FORMAT_DEFAULT); 3289 } 3290 if (profile->mChannelMasks[0] == 0) { 3291 profile->mChannelMasks.clear(); 3292 profile->mChannelMasks.add(0); 3293 } 3294 } 3295 } 3296 } 3297 } 3298 return NO_ERROR; 3299} 3300 3301status_t AudioPolicyManager::checkInputsForDevice(audio_devices_t device, 3302 audio_policy_dev_state_t state, 3303 SortedVector<audio_io_handle_t>& inputs, 3304 const String8 address) 3305{ 3306 sp<AudioInputDescriptor> desc; 3307 if (state == AUDIO_POLICY_DEVICE_STATE_AVAILABLE) { 3308 // first list already open inputs that can be routed to this device 3309 for (size_t input_index = 0; input_index < mInputs.size(); input_index++) { 3310 desc = mInputs.valueAt(input_index); 3311 if (desc->mProfile->mSupportedDevices.types() & (device & ~AUDIO_DEVICE_BIT_IN)) { 3312 ALOGV("checkInputsForDevice(): adding opened input %d", mInputs.keyAt(input_index)); 3313 inputs.add(mInputs.keyAt(input_index)); 3314 } 3315 } 3316 3317 // then look for input profiles that can be routed to this device 3318 SortedVector< sp<IOProfile> > profiles; 3319 for (size_t module_idx = 0; module_idx < mHwModules.size(); module_idx++) 3320 { 3321 if (mHwModules[module_idx]->mHandle == 0) { 3322 continue; 3323 } 3324 for (size_t profile_index = 0; 3325 profile_index < mHwModules[module_idx]->mInputProfiles.size(); 3326 profile_index++) 3327 { 3328 if (mHwModules[module_idx]->mInputProfiles[profile_index]->mSupportedDevices.types() 3329 & (device & ~AUDIO_DEVICE_BIT_IN)) { 3330 ALOGV("checkInputsForDevice(): adding profile %zu from module %zu", 3331 profile_index, module_idx); 3332 profiles.add(mHwModules[module_idx]->mInputProfiles[profile_index]); 3333 } 3334 } 3335 } 3336 3337 if (profiles.isEmpty() && inputs.isEmpty()) { 3338 ALOGW("checkInputsForDevice(): No input available for device 0x%X", device); 3339 return BAD_VALUE; 3340 } 3341 3342 // open inputs for matching profiles if needed. Direct inputs are also opened to 3343 // query for dynamic parameters and will be closed later by setDeviceConnectionState() 3344 for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) { 3345 3346 sp<IOProfile> profile = profiles[profile_index]; 3347 // nothing to do if one input is already opened for this profile 3348 size_t input_index; 3349 for (input_index = 0; input_index < mInputs.size(); input_index++) { 3350 desc = mInputs.valueAt(input_index); 3351 if (desc->mProfile == profile) { 3352 break; 3353 } 3354 } 3355 if (input_index != mInputs.size()) { 3356 continue; 3357 } 3358 3359 ALOGV("opening input for device 0x%X with params %s", device, address.string()); 3360 desc = new AudioInputDescriptor(profile); 3361 desc->mDevice = device; 3362 audio_config_t config = AUDIO_CONFIG_INITIALIZER; 3363 config.sample_rate = desc->mSamplingRate; 3364 config.channel_mask = desc->mChannelMask; 3365 config.format = desc->mFormat; 3366 audio_io_handle_t input = AUDIO_IO_HANDLE_NONE; 3367 status_t status = mpClientInterface->openInput(profile->mModule->mHandle, 3368 &input, 3369 &config, 3370 &desc->mDevice, 3371 address, 3372 AUDIO_SOURCE_MIC, 3373 AUDIO_INPUT_FLAG_NONE /*FIXME*/); 3374 3375 if (status == NO_ERROR) { 3376 desc->mSamplingRate = config.sample_rate; 3377 desc->mChannelMask = config.channel_mask; 3378 desc->mFormat = config.format; 3379 3380 if (!address.isEmpty()) { 3381 char *param = audio_device_address_to_parameter(device, address); 3382 mpClientInterface->setParameters(input, String8(param)); 3383 free(param); 3384 } 3385 3386 // Here is where we step through and resolve any "dynamic" fields 3387 String8 reply; 3388 char *value; 3389 if (profile->mSamplingRates[0] == 0) { 3390 reply = mpClientInterface->getParameters(input, 3391 String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES)); 3392 ALOGV("checkInputsForDevice() direct input sup sampling rates %s", 3393 reply.string()); 3394 value = strpbrk((char *)reply.string(), "="); 3395 if (value != NULL) { 3396 profile->loadSamplingRates(value + 1); 3397 } 3398 } 3399 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 3400 reply = mpClientInterface->getParameters(input, 3401 String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS)); 3402 ALOGV("checkInputsForDevice() direct input sup formats %s", reply.string()); 3403 value = strpbrk((char *)reply.string(), "="); 3404 if (value != NULL) { 3405 profile->loadFormats(value + 1); 3406 } 3407 } 3408 if (profile->mChannelMasks[0] == 0) { 3409 reply = mpClientInterface->getParameters(input, 3410 String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS)); 3411 ALOGV("checkInputsForDevice() direct input sup channel masks %s", 3412 reply.string()); 3413 value = strpbrk((char *)reply.string(), "="); 3414 if (value != NULL) { 3415 profile->loadInChannels(value + 1); 3416 } 3417 } 3418 if (((profile->mSamplingRates[0] == 0) && (profile->mSamplingRates.size() < 2)) || 3419 ((profile->mFormats[0] == 0) && (profile->mFormats.size() < 2)) || 3420 ((profile->mChannelMasks[0] == 0) && (profile->mChannelMasks.size() < 2))) { 3421 ALOGW("checkInputsForDevice() direct input missing param"); 3422 mpClientInterface->closeInput(input); 3423 input = AUDIO_IO_HANDLE_NONE; 3424 } 3425 3426 if (input != 0) { 3427 addInput(input, desc); 3428 } 3429 } // endif input != 0 3430 3431 if (input == AUDIO_IO_HANDLE_NONE) { 3432 ALOGW("checkInputsForDevice() could not open input for device 0x%X", device); 3433 profiles.removeAt(profile_index); 3434 profile_index--; 3435 } else { 3436 inputs.add(input); 3437 ALOGV("checkInputsForDevice(): adding input %d", input); 3438 } 3439 } // end scan profiles 3440 3441 if (profiles.isEmpty()) { 3442 ALOGW("checkInputsForDevice(): No input available for device 0x%X", device); 3443 return BAD_VALUE; 3444 } 3445 } else { 3446 // Disconnect 3447 // check if one opened input is not needed any more after disconnecting one device 3448 for (size_t input_index = 0; input_index < mInputs.size(); input_index++) { 3449 desc = mInputs.valueAt(input_index); 3450 if (!(desc->mProfile->mSupportedDevices.types() & mAvailableInputDevices.types())) { 3451 ALOGV("checkInputsForDevice(): disconnecting adding input %d", 3452 mInputs.keyAt(input_index)); 3453 inputs.add(mInputs.keyAt(input_index)); 3454 } 3455 } 3456 // Clear any profiles associated with the disconnected device. 3457 for (size_t module_index = 0; module_index < mHwModules.size(); module_index++) { 3458 if (mHwModules[module_index]->mHandle == 0) { 3459 continue; 3460 } 3461 for (size_t profile_index = 0; 3462 profile_index < mHwModules[module_index]->mInputProfiles.size(); 3463 profile_index++) { 3464 sp<IOProfile> profile = mHwModules[module_index]->mInputProfiles[profile_index]; 3465 if (profile->mSupportedDevices.types() & device) { 3466 ALOGV("checkInputsForDevice(): clearing direct input profile %zu on module %zu", 3467 profile_index, module_index); 3468 if (profile->mSamplingRates[0] == 0) { 3469 profile->mSamplingRates.clear(); 3470 profile->mSamplingRates.add(0); 3471 } 3472 if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) { 3473 profile->mFormats.clear(); 3474 profile->mFormats.add(AUDIO_FORMAT_DEFAULT); 3475 } 3476 if (profile->mChannelMasks[0] == 0) { 3477 profile->mChannelMasks.clear(); 3478 profile->mChannelMasks.add(0); 3479 } 3480 } 3481 } 3482 } 3483 } // end disconnect 3484 3485 return NO_ERROR; 3486} 3487 3488 3489void AudioPolicyManager::closeOutput(audio_io_handle_t output) 3490{ 3491 ALOGV("closeOutput(%d)", output); 3492 3493 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3494 if (outputDesc == NULL) { 3495 ALOGW("closeOutput() unknown output %d", output); 3496 return; 3497 } 3498 3499 // look for duplicated outputs connected to the output being removed. 3500 for (size_t i = 0; i < mOutputs.size(); i++) { 3501 sp<AudioOutputDescriptor> dupOutputDesc = mOutputs.valueAt(i); 3502 if (dupOutputDesc->isDuplicated() && 3503 (dupOutputDesc->mOutput1 == outputDesc || 3504 dupOutputDesc->mOutput2 == outputDesc)) { 3505 sp<AudioOutputDescriptor> outputDesc2; 3506 if (dupOutputDesc->mOutput1 == outputDesc) { 3507 outputDesc2 = dupOutputDesc->mOutput2; 3508 } else { 3509 outputDesc2 = dupOutputDesc->mOutput1; 3510 } 3511 // As all active tracks on duplicated output will be deleted, 3512 // and as they were also referenced on the other output, the reference 3513 // count for their stream type must be adjusted accordingly on 3514 // the other output. 3515 for (int j = 0; j < AUDIO_STREAM_CNT; j++) { 3516 int refCount = dupOutputDesc->mRefCount[j]; 3517 outputDesc2->changeRefCount((audio_stream_type_t)j,-refCount); 3518 } 3519 audio_io_handle_t duplicatedOutput = mOutputs.keyAt(i); 3520 ALOGV("closeOutput() closing also duplicated output %d", duplicatedOutput); 3521 3522 mpClientInterface->closeOutput(duplicatedOutput); 3523 mOutputs.removeItem(duplicatedOutput); 3524 } 3525 } 3526 3527 nextAudioPortGeneration(); 3528 3529 ssize_t index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 3530 if (index >= 0) { 3531 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3532 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 3533 mAudioPatches.removeItemsAt(index); 3534 mpClientInterface->onAudioPatchListUpdate(); 3535 } 3536 3537 AudioParameter param; 3538 param.add(String8("closing"), String8("true")); 3539 mpClientInterface->setParameters(output, param.toString()); 3540 3541 mpClientInterface->closeOutput(output); 3542 mOutputs.removeItem(output); 3543 mPreviousOutputs = mOutputs; 3544} 3545 3546void AudioPolicyManager::closeInput(audio_io_handle_t input) 3547{ 3548 ALOGV("closeInput(%d)", input); 3549 3550 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 3551 if (inputDesc == NULL) { 3552 ALOGW("closeInput() unknown input %d", input); 3553 return; 3554 } 3555 3556 nextAudioPortGeneration(); 3557 3558 ssize_t index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 3559 if (index >= 0) { 3560 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3561 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 3562 mAudioPatches.removeItemsAt(index); 3563 mpClientInterface->onAudioPatchListUpdate(); 3564 } 3565 3566 mpClientInterface->closeInput(input); 3567 mInputs.removeItem(input); 3568} 3569 3570SortedVector<audio_io_handle_t> AudioPolicyManager::getOutputsForDevice(audio_devices_t device, 3571 DefaultKeyedVector<audio_io_handle_t, sp<AudioOutputDescriptor> > openOutputs) 3572{ 3573 SortedVector<audio_io_handle_t> outputs; 3574 3575 ALOGVV("getOutputsForDevice() device %04x", device); 3576 for (size_t i = 0; i < openOutputs.size(); i++) { 3577 ALOGVV("output %d isDuplicated=%d device=%04x", 3578 i, openOutputs.valueAt(i)->isDuplicated(), openOutputs.valueAt(i)->supportedDevices()); 3579 if ((device & openOutputs.valueAt(i)->supportedDevices()) == device) { 3580 ALOGVV("getOutputsForDevice() found output %d", openOutputs.keyAt(i)); 3581 outputs.add(openOutputs.keyAt(i)); 3582 } 3583 } 3584 return outputs; 3585} 3586 3587bool AudioPolicyManager::vectorsEqual(SortedVector<audio_io_handle_t>& outputs1, 3588 SortedVector<audio_io_handle_t>& outputs2) 3589{ 3590 if (outputs1.size() != outputs2.size()) { 3591 return false; 3592 } 3593 for (size_t i = 0; i < outputs1.size(); i++) { 3594 if (outputs1[i] != outputs2[i]) { 3595 return false; 3596 } 3597 } 3598 return true; 3599} 3600 3601void AudioPolicyManager::checkOutputForStrategy(routing_strategy strategy) 3602{ 3603 audio_devices_t oldDevice = getDeviceForStrategy(strategy, true /*fromCache*/); 3604 audio_devices_t newDevice = getDeviceForStrategy(strategy, false /*fromCache*/); 3605 SortedVector<audio_io_handle_t> srcOutputs = getOutputsForDevice(oldDevice, mPreviousOutputs); 3606 SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(newDevice, mOutputs); 3607 3608 if (!vectorsEqual(srcOutputs,dstOutputs)) { 3609 ALOGV("checkOutputForStrategy() strategy %d, moving from output %d to output %d", 3610 strategy, srcOutputs[0], dstOutputs[0]); 3611 // mute strategy while moving tracks from one output to another 3612 for (size_t i = 0; i < srcOutputs.size(); i++) { 3613 sp<AudioOutputDescriptor> desc = mOutputs.valueFor(srcOutputs[i]); 3614 if (desc->isStrategyActive(strategy)) { 3615 setStrategyMute(strategy, true, srcOutputs[i]); 3616 setStrategyMute(strategy, false, srcOutputs[i], MUTE_TIME_MS, newDevice); 3617 } 3618 } 3619 3620 // Move effects associated to this strategy from previous output to new output 3621 if (strategy == STRATEGY_MEDIA) { 3622 audio_io_handle_t fxOutput = selectOutputForEffects(dstOutputs); 3623 SortedVector<audio_io_handle_t> moved; 3624 for (size_t i = 0; i < mEffects.size(); i++) { 3625 sp<EffectDescriptor> effectDesc = mEffects.valueAt(i); 3626 if (effectDesc->mSession == AUDIO_SESSION_OUTPUT_MIX && 3627 effectDesc->mIo != fxOutput) { 3628 if (moved.indexOf(effectDesc->mIo) < 0) { 3629 ALOGV("checkOutputForStrategy() moving effect %d to output %d", 3630 mEffects.keyAt(i), fxOutput); 3631 mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, effectDesc->mIo, 3632 fxOutput); 3633 moved.add(effectDesc->mIo); 3634 } 3635 effectDesc->mIo = fxOutput; 3636 } 3637 } 3638 } 3639 // Move tracks associated to this strategy from previous output to new output 3640 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 3641 if (getStrategy((audio_stream_type_t)i) == strategy) { 3642 mpClientInterface->invalidateStream((audio_stream_type_t)i); 3643 } 3644 } 3645 } 3646} 3647 3648void AudioPolicyManager::checkOutputForAllStrategies() 3649{ 3650 checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE); 3651 checkOutputForStrategy(STRATEGY_PHONE); 3652 checkOutputForStrategy(STRATEGY_SONIFICATION); 3653 checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL); 3654 checkOutputForStrategy(STRATEGY_MEDIA); 3655 checkOutputForStrategy(STRATEGY_DTMF); 3656} 3657 3658audio_io_handle_t AudioPolicyManager::getA2dpOutput() 3659{ 3660 for (size_t i = 0; i < mOutputs.size(); i++) { 3661 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueAt(i); 3662 if (!outputDesc->isDuplicated() && outputDesc->device() & AUDIO_DEVICE_OUT_ALL_A2DP) { 3663 return mOutputs.keyAt(i); 3664 } 3665 } 3666 3667 return 0; 3668} 3669 3670void AudioPolicyManager::checkA2dpSuspend() 3671{ 3672 audio_io_handle_t a2dpOutput = getA2dpOutput(); 3673 if (a2dpOutput == 0) { 3674 mA2dpSuspended = false; 3675 return; 3676 } 3677 3678 bool isScoConnected = 3679 (mAvailableInputDevices.types() & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) != 0; 3680 // suspend A2DP output if: 3681 // (NOT already suspended) && 3682 // ((SCO device is connected && 3683 // (forced usage for communication || for record is SCO))) || 3684 // (phone state is ringing || in call) 3685 // 3686 // restore A2DP output if: 3687 // (Already suspended) && 3688 // ((SCO device is NOT connected || 3689 // (forced usage NOT for communication && NOT for record is SCO))) && 3690 // (phone state is NOT ringing && NOT in call) 3691 // 3692 if (mA2dpSuspended) { 3693 if ((!isScoConnected || 3694 ((mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] != AUDIO_POLICY_FORCE_BT_SCO) && 3695 (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] != AUDIO_POLICY_FORCE_BT_SCO))) && 3696 ((mPhoneState != AUDIO_MODE_IN_CALL) && 3697 (mPhoneState != AUDIO_MODE_RINGTONE))) { 3698 3699 mpClientInterface->restoreOutput(a2dpOutput); 3700 mA2dpSuspended = false; 3701 } 3702 } else { 3703 if ((isScoConnected && 3704 ((mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] == AUDIO_POLICY_FORCE_BT_SCO) || 3705 (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] == AUDIO_POLICY_FORCE_BT_SCO))) || 3706 ((mPhoneState == AUDIO_MODE_IN_CALL) || 3707 (mPhoneState == AUDIO_MODE_RINGTONE))) { 3708 3709 mpClientInterface->suspendOutput(a2dpOutput); 3710 mA2dpSuspended = true; 3711 } 3712 } 3713} 3714 3715audio_devices_t AudioPolicyManager::getNewOutputDevice(audio_io_handle_t output, bool fromCache) 3716{ 3717 audio_devices_t device = AUDIO_DEVICE_NONE; 3718 3719 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 3720 3721 ssize_t index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 3722 if (index >= 0) { 3723 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3724 if (patchDesc->mUid != mUidCached) { 3725 ALOGV("getNewOutputDevice() device %08x forced by patch %d", 3726 outputDesc->device(), outputDesc->mPatchHandle); 3727 return outputDesc->device(); 3728 } 3729 } 3730 3731 // check the following by order of priority to request a routing change if necessary: 3732 // 1: the strategy enforced audible is active on the output: 3733 // use device for strategy enforced audible 3734 // 2: we are in call or the strategy phone is active on the output: 3735 // use device for strategy phone 3736 // 3: the strategy sonification is active on the output: 3737 // use device for strategy sonification 3738 // 4: the strategy "respectful" sonification is active on the output: 3739 // use device for strategy "respectful" sonification 3740 // 5: the strategy media is active on the output: 3741 // use device for strategy media 3742 // 6: the strategy DTMF is active on the output: 3743 // use device for strategy DTMF 3744 if (outputDesc->isStrategyActive(STRATEGY_ENFORCED_AUDIBLE)) { 3745 device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache); 3746 } else if (isInCall() || 3747 outputDesc->isStrategyActive(STRATEGY_PHONE)) { 3748 device = getDeviceForStrategy(STRATEGY_PHONE, fromCache); 3749 } else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION)) { 3750 device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache); 3751 } else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION_RESPECTFUL)) { 3752 device = getDeviceForStrategy(STRATEGY_SONIFICATION_RESPECTFUL, fromCache); 3753 } else if (outputDesc->isStrategyActive(STRATEGY_MEDIA)) { 3754 device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache); 3755 } else if (outputDesc->isStrategyActive(STRATEGY_DTMF)) { 3756 device = getDeviceForStrategy(STRATEGY_DTMF, fromCache); 3757 } 3758 3759 ALOGV("getNewOutputDevice() selected device %x", device); 3760 return device; 3761} 3762 3763audio_devices_t AudioPolicyManager::getNewInputDevice(audio_io_handle_t input) 3764{ 3765 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 3766 3767 ssize_t index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 3768 if (index >= 0) { 3769 sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index); 3770 if (patchDesc->mUid != mUidCached) { 3771 ALOGV("getNewInputDevice() device %08x forced by patch %d", 3772 inputDesc->mDevice, inputDesc->mPatchHandle); 3773 return inputDesc->mDevice; 3774 } 3775 } 3776 3777 audio_devices_t device = getDeviceForInputSource(inputDesc->mInputSource); 3778 3779 ALOGV("getNewInputDevice() selected device %x", device); 3780 return device; 3781} 3782 3783uint32_t AudioPolicyManager::getStrategyForStream(audio_stream_type_t stream) { 3784 return (uint32_t)getStrategy(stream); 3785} 3786 3787audio_devices_t AudioPolicyManager::getDevicesForStream(audio_stream_type_t stream) { 3788 // By checking the range of stream before calling getStrategy, we avoid 3789 // getStrategy's behavior for invalid streams. getStrategy would do a ALOGE 3790 // and then return STRATEGY_MEDIA, but we want to return the empty set. 3791 if (stream < (audio_stream_type_t) 0 || stream >= AUDIO_STREAM_CNT) { 3792 return AUDIO_DEVICE_NONE; 3793 } 3794 audio_devices_t devices; 3795 AudioPolicyManager::routing_strategy strategy = getStrategy(stream); 3796 devices = getDeviceForStrategy(strategy, true /*fromCache*/); 3797 SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(devices, mOutputs); 3798 for (size_t i = 0; i < outputs.size(); i++) { 3799 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(outputs[i]); 3800 if (outputDesc->isStrategyActive(strategy)) { 3801 devices = outputDesc->device(); 3802 break; 3803 } 3804 } 3805 return devices; 3806} 3807 3808AudioPolicyManager::routing_strategy AudioPolicyManager::getStrategy( 3809 audio_stream_type_t stream) { 3810 // stream to strategy mapping 3811 switch (stream) { 3812 case AUDIO_STREAM_VOICE_CALL: 3813 case AUDIO_STREAM_BLUETOOTH_SCO: 3814 return STRATEGY_PHONE; 3815 case AUDIO_STREAM_RING: 3816 case AUDIO_STREAM_ALARM: 3817 return STRATEGY_SONIFICATION; 3818 case AUDIO_STREAM_NOTIFICATION: 3819 return STRATEGY_SONIFICATION_RESPECTFUL; 3820 case AUDIO_STREAM_DTMF: 3821 return STRATEGY_DTMF; 3822 default: 3823 ALOGE("unknown stream type"); 3824 case AUDIO_STREAM_SYSTEM: 3825 // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs 3826 // while key clicks are played produces a poor result 3827 case AUDIO_STREAM_TTS: 3828 case AUDIO_STREAM_MUSIC: 3829 return STRATEGY_MEDIA; 3830 case AUDIO_STREAM_ENFORCED_AUDIBLE: 3831 return STRATEGY_ENFORCED_AUDIBLE; 3832 } 3833} 3834 3835uint32_t AudioPolicyManager::getStrategyForAttr(const audio_attributes_t *attr) { 3836 // flags to strategy mapping 3837 if ((attr->flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) { 3838 return (uint32_t) STRATEGY_ENFORCED_AUDIBLE; 3839 } 3840 3841 // usage to strategy mapping 3842 switch (attr->usage) { 3843 case AUDIO_USAGE_MEDIA: 3844 case AUDIO_USAGE_GAME: 3845 case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY: 3846 case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: 3847 case AUDIO_USAGE_ASSISTANCE_SONIFICATION: 3848 return (uint32_t) STRATEGY_MEDIA; 3849 3850 case AUDIO_USAGE_VOICE_COMMUNICATION: 3851 return (uint32_t) STRATEGY_PHONE; 3852 3853 case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING: 3854 return (uint32_t) STRATEGY_DTMF; 3855 3856 case AUDIO_USAGE_ALARM: 3857 case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE: 3858 return (uint32_t) STRATEGY_SONIFICATION; 3859 3860 case AUDIO_USAGE_NOTIFICATION: 3861 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST: 3862 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT: 3863 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED: 3864 case AUDIO_USAGE_NOTIFICATION_EVENT: 3865 return (uint32_t) STRATEGY_SONIFICATION_RESPECTFUL; 3866 3867 case AUDIO_USAGE_UNKNOWN: 3868 default: 3869 return (uint32_t) STRATEGY_MEDIA; 3870 } 3871} 3872 3873void AudioPolicyManager::handleNotificationRoutingForStream(audio_stream_type_t stream) { 3874 switch(stream) { 3875 case AUDIO_STREAM_MUSIC: 3876 checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL); 3877 updateDevicesAndOutputs(); 3878 break; 3879 default: 3880 break; 3881 } 3882} 3883 3884audio_devices_t AudioPolicyManager::getDeviceForStrategy(routing_strategy strategy, 3885 bool fromCache) 3886{ 3887 uint32_t device = AUDIO_DEVICE_NONE; 3888 3889 if (fromCache) { 3890 ALOGVV("getDeviceForStrategy() from cache strategy %d, device %x", 3891 strategy, mDeviceForStrategy[strategy]); 3892 return mDeviceForStrategy[strategy]; 3893 } 3894 audio_devices_t availableOutputDeviceTypes = mAvailableOutputDevices.types(); 3895 switch (strategy) { 3896 3897 case STRATEGY_SONIFICATION_RESPECTFUL: 3898 if (isInCall()) { 3899 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 3900 } else if (isStreamActiveRemotely(AUDIO_STREAM_MUSIC, 3901 SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) { 3902 // while media is playing on a remote device, use the the sonification behavior. 3903 // Note that we test this usecase before testing if media is playing because 3904 // the isStreamActive() method only informs about the activity of a stream, not 3905 // if it's for local playback. Note also that we use the same delay between both tests 3906 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 3907 } else if (isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) { 3908 // while media is playing (or has recently played), use the same device 3909 device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/); 3910 } else { 3911 // when media is not playing anymore, fall back on the sonification behavior 3912 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 3913 } 3914 3915 break; 3916 3917 case STRATEGY_DTMF: 3918 if (!isInCall()) { 3919 // when off call, DTMF strategy follows the same rules as MEDIA strategy 3920 device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/); 3921 break; 3922 } 3923 // when in call, DTMF and PHONE strategies follow the same rules 3924 // FALL THROUGH 3925 3926 case STRATEGY_PHONE: 3927 // Force use of only devices on primary output if: 3928 // - in call AND 3929 // - cannot route from voice call RX OR 3930 // - audio HAL version is < 3.0 and TX device is on the primary HW module 3931 if (mPhoneState == AUDIO_MODE_IN_CALL) { 3932 audio_devices_t txDevice = getDeviceForInputSource(AUDIO_SOURCE_VOICE_COMMUNICATION); 3933 sp<AudioOutputDescriptor> hwOutputDesc = mOutputs.valueFor(mPrimaryOutput); 3934 if (((mAvailableInputDevices.types() & 3935 AUDIO_DEVICE_IN_TELEPHONY_RX & ~AUDIO_DEVICE_BIT_IN) == 0) || 3936 (((txDevice & availablePrimaryInputDevices() & ~AUDIO_DEVICE_BIT_IN) != 0) && 3937 (hwOutputDesc->getAudioPort()->mModule->mHalVersion < 3938 AUDIO_DEVICE_API_VERSION_3_0))) { 3939 availableOutputDeviceTypes = availablePrimaryOutputDevices(); 3940 } 3941 } 3942 // for phone strategy, we first consider the forced use and then the available devices by order 3943 // of priority 3944 switch (mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]) { 3945 case AUDIO_POLICY_FORCE_BT_SCO: 3946 if (!isInCall() || strategy != STRATEGY_DTMF) { 3947 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT; 3948 if (device) break; 3949 } 3950 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET; 3951 if (device) break; 3952 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_SCO; 3953 if (device) break; 3954 // if SCO device is requested but no SCO device is available, fall back to default case 3955 // FALL THROUGH 3956 3957 default: // FORCE_NONE 3958 // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP 3959 if (!isInCall() && 3960 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 3961 (getA2dpOutput() != 0) && !mA2dpSuspended) { 3962 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP; 3963 if (device) break; 3964 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; 3965 if (device) break; 3966 } 3967 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADPHONE; 3968 if (device) break; 3969 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADSET; 3970 if (device) break; 3971 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 3972 if (device) break; 3973 if (mPhoneState != AUDIO_MODE_IN_CALL) { 3974 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 3975 if (device) break; 3976 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 3977 if (device) break; 3978 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 3979 if (device) break; 3980 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 3981 if (device) break; 3982 } 3983 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_EARPIECE; 3984 if (device) break; 3985 device = mDefaultOutputDevice->mDeviceType; 3986 if (device == AUDIO_DEVICE_NONE) { 3987 ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE"); 3988 } 3989 break; 3990 3991 case AUDIO_POLICY_FORCE_SPEAKER: 3992 // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to 3993 // A2DP speaker when forcing to speaker output 3994 if (!isInCall() && 3995 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 3996 (getA2dpOutput() != 0) && !mA2dpSuspended) { 3997 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; 3998 if (device) break; 3999 } 4000 if (mPhoneState != AUDIO_MODE_IN_CALL) { 4001 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 4002 if (device) break; 4003 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 4004 if (device) break; 4005 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 4006 if (device) break; 4007 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 4008 if (device) break; 4009 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 4010 if (device) break; 4011 } 4012 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_LINE; 4013 if (device) break; 4014 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 4015 if (device) break; 4016 device = mDefaultOutputDevice->mDeviceType; 4017 if (device == AUDIO_DEVICE_NONE) { 4018 ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE, FORCE_SPEAKER"); 4019 } 4020 break; 4021 } 4022 break; 4023 4024 case STRATEGY_SONIFICATION: 4025 4026 // If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by 4027 // handleIncallSonification(). 4028 if (isInCall()) { 4029 device = getDeviceForStrategy(STRATEGY_PHONE, false /*fromCache*/); 4030 break; 4031 } 4032 // FALL THROUGH 4033 4034 case STRATEGY_ENFORCED_AUDIBLE: 4035 // strategy STRATEGY_ENFORCED_AUDIBLE uses same routing policy as STRATEGY_SONIFICATION 4036 // except: 4037 // - when in call where it doesn't default to STRATEGY_PHONE behavior 4038 // - in countries where not enforced in which case it follows STRATEGY_MEDIA 4039 4040 if ((strategy == STRATEGY_SONIFICATION) || 4041 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED)) { 4042 device = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 4043 if (device == AUDIO_DEVICE_NONE) { 4044 ALOGE("getDeviceForStrategy() speaker device not found for STRATEGY_SONIFICATION"); 4045 } 4046 } 4047 // The second device used for sonification is the same as the device used by media strategy 4048 // FALL THROUGH 4049 4050 case STRATEGY_MEDIA: { 4051 uint32_t device2 = AUDIO_DEVICE_NONE; 4052 if (strategy != STRATEGY_SONIFICATION) { 4053 // no sonification on remote submix (e.g. WFD) 4054 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_REMOTE_SUBMIX; 4055 } 4056 if ((device2 == AUDIO_DEVICE_NONE) && 4057 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) && 4058 (getA2dpOutput() != 0) && !mA2dpSuspended) { 4059 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP; 4060 if (device2 == AUDIO_DEVICE_NONE) { 4061 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; 4062 } 4063 if (device2 == AUDIO_DEVICE_NONE) { 4064 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; 4065 } 4066 } 4067 if (device2 == AUDIO_DEVICE_NONE) { 4068 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADPHONE; 4069 } 4070 if ((device2 == AUDIO_DEVICE_NONE)) { 4071 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_LINE; 4072 } 4073 if (device2 == AUDIO_DEVICE_NONE) { 4074 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_WIRED_HEADSET; 4075 } 4076 if (device2 == AUDIO_DEVICE_NONE) { 4077 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_ACCESSORY; 4078 } 4079 if (device2 == AUDIO_DEVICE_NONE) { 4080 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_USB_DEVICE; 4081 } 4082 if (device2 == AUDIO_DEVICE_NONE) { 4083 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET; 4084 } 4085 if ((device2 == AUDIO_DEVICE_NONE) && (strategy != STRATEGY_SONIFICATION)) { 4086 // no sonification on aux digital (e.g. HDMI) 4087 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_DIGITAL; 4088 } 4089 if ((device2 == AUDIO_DEVICE_NONE) && 4090 (mForceUse[AUDIO_POLICY_FORCE_FOR_DOCK] == AUDIO_POLICY_FORCE_ANALOG_DOCK)) { 4091 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; 4092 } 4093 if (device2 == AUDIO_DEVICE_NONE) { 4094 device2 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPEAKER; 4095 } 4096 int device3 = AUDIO_DEVICE_NONE; 4097 if (strategy == STRATEGY_MEDIA) { 4098 // ARC, SPDIF and AUX_LINE can co-exist with others. 4099 device3 = availableOutputDeviceTypes & AUDIO_DEVICE_OUT_HDMI_ARC; 4100 device3 |= (availableOutputDeviceTypes & AUDIO_DEVICE_OUT_SPDIF); 4101 device3 |= (availableOutputDeviceTypes & AUDIO_DEVICE_OUT_AUX_LINE); 4102 } 4103 4104 device2 |= device3; 4105 // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or 4106 // STRATEGY_ENFORCED_AUDIBLE, AUDIO_DEVICE_NONE otherwise 4107 device |= device2; 4108 4109 // If hdmi system audio mode is on, remove speaker out of output list. 4110 if ((strategy == STRATEGY_MEDIA) && 4111 (mForceUse[AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO] == 4112 AUDIO_POLICY_FORCE_HDMI_SYSTEM_AUDIO_ENFORCED)) { 4113 device &= ~AUDIO_DEVICE_OUT_SPEAKER; 4114 } 4115 4116 if (device) break; 4117 device = mDefaultOutputDevice->mDeviceType; 4118 if (device == AUDIO_DEVICE_NONE) { 4119 ALOGE("getDeviceForStrategy() no device found for STRATEGY_MEDIA"); 4120 } 4121 } break; 4122 4123 default: 4124 ALOGW("getDeviceForStrategy() unknown strategy: %d", strategy); 4125 break; 4126 } 4127 4128 ALOGVV("getDeviceForStrategy() strategy %d, device %x", strategy, device); 4129 return device; 4130} 4131 4132void AudioPolicyManager::updateDevicesAndOutputs() 4133{ 4134 for (int i = 0; i < NUM_STRATEGIES; i++) { 4135 mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/); 4136 } 4137 mPreviousOutputs = mOutputs; 4138} 4139 4140uint32_t AudioPolicyManager::checkDeviceMuteStrategies(sp<AudioOutputDescriptor> outputDesc, 4141 audio_devices_t prevDevice, 4142 uint32_t delayMs) 4143{ 4144 // mute/unmute strategies using an incompatible device combination 4145 // if muting, wait for the audio in pcm buffer to be drained before proceeding 4146 // if unmuting, unmute only after the specified delay 4147 if (outputDesc->isDuplicated()) { 4148 return 0; 4149 } 4150 4151 uint32_t muteWaitMs = 0; 4152 audio_devices_t device = outputDesc->device(); 4153 bool shouldMute = outputDesc->isActive() && (popcount(device) >= 2); 4154 4155 for (size_t i = 0; i < NUM_STRATEGIES; i++) { 4156 audio_devices_t curDevice = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/); 4157 bool mute = shouldMute && (curDevice & device) && (curDevice != device); 4158 bool doMute = false; 4159 4160 if (mute && !outputDesc->mStrategyMutedByDevice[i]) { 4161 doMute = true; 4162 outputDesc->mStrategyMutedByDevice[i] = true; 4163 } else if (!mute && outputDesc->mStrategyMutedByDevice[i]){ 4164 doMute = true; 4165 outputDesc->mStrategyMutedByDevice[i] = false; 4166 } 4167 if (doMute) { 4168 for (size_t j = 0; j < mOutputs.size(); j++) { 4169 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(j); 4170 // skip output if it does not share any device with current output 4171 if ((desc->supportedDevices() & outputDesc->supportedDevices()) 4172 == AUDIO_DEVICE_NONE) { 4173 continue; 4174 } 4175 audio_io_handle_t curOutput = mOutputs.keyAt(j); 4176 ALOGVV("checkDeviceMuteStrategies() %s strategy %d (curDevice %04x) on output %d", 4177 mute ? "muting" : "unmuting", i, curDevice, curOutput); 4178 setStrategyMute((routing_strategy)i, mute, curOutput, mute ? 0 : delayMs); 4179 if (desc->isStrategyActive((routing_strategy)i)) { 4180 if (mute) { 4181 // FIXME: should not need to double latency if volume could be applied 4182 // immediately by the audioflinger mixer. We must account for the delay 4183 // between now and the next time the audioflinger thread for this output 4184 // will process a buffer (which corresponds to one buffer size, 4185 // usually 1/2 or 1/4 of the latency). 4186 if (muteWaitMs < desc->latency() * 2) { 4187 muteWaitMs = desc->latency() * 2; 4188 } 4189 } 4190 } 4191 } 4192 } 4193 } 4194 4195 // temporary mute output if device selection changes to avoid volume bursts due to 4196 // different per device volumes 4197 if (outputDesc->isActive() && (device != prevDevice)) { 4198 if (muteWaitMs < outputDesc->latency() * 2) { 4199 muteWaitMs = outputDesc->latency() * 2; 4200 } 4201 for (size_t i = 0; i < NUM_STRATEGIES; i++) { 4202 if (outputDesc->isStrategyActive((routing_strategy)i)) { 4203 setStrategyMute((routing_strategy)i, true, outputDesc->mIoHandle); 4204 // do tempMute unmute after twice the mute wait time 4205 setStrategyMute((routing_strategy)i, false, outputDesc->mIoHandle, 4206 muteWaitMs *2, device); 4207 } 4208 } 4209 } 4210 4211 // wait for the PCM output buffers to empty before proceeding with the rest of the command 4212 if (muteWaitMs > delayMs) { 4213 muteWaitMs -= delayMs; 4214 usleep(muteWaitMs * 1000); 4215 return muteWaitMs; 4216 } 4217 return 0; 4218} 4219 4220uint32_t AudioPolicyManager::setOutputDevice(audio_io_handle_t output, 4221 audio_devices_t device, 4222 bool force, 4223 int delayMs, 4224 audio_patch_handle_t *patchHandle, 4225 const char* address) 4226{ 4227 ALOGV("setOutputDevice() output %d device %04x delayMs %d", output, device, delayMs); 4228 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 4229 AudioParameter param; 4230 uint32_t muteWaitMs; 4231 4232 if (outputDesc->isDuplicated()) { 4233 muteWaitMs = setOutputDevice(outputDesc->mOutput1->mIoHandle, device, force, delayMs); 4234 muteWaitMs += setOutputDevice(outputDesc->mOutput2->mIoHandle, device, force, delayMs); 4235 return muteWaitMs; 4236 } 4237 // no need to proceed if new device is not AUDIO_DEVICE_NONE and not supported by current 4238 // output profile 4239 if ((device != AUDIO_DEVICE_NONE) && 4240 ((device & outputDesc->mProfile->mSupportedDevices.types()) == 0)) { 4241 return 0; 4242 } 4243 4244 // filter devices according to output selected 4245 device = (audio_devices_t)(device & outputDesc->mProfile->mSupportedDevices.types()); 4246 4247 audio_devices_t prevDevice = outputDesc->mDevice; 4248 4249 ALOGV("setOutputDevice() prevDevice %04x", prevDevice); 4250 4251 if (device != AUDIO_DEVICE_NONE) { 4252 outputDesc->mDevice = device; 4253 } 4254 muteWaitMs = checkDeviceMuteStrategies(outputDesc, prevDevice, delayMs); 4255 4256 // Do not change the routing if: 4257 // - the requested device is AUDIO_DEVICE_NONE 4258 // - the requested device is the same as current device and force is not specified. 4259 // Doing this check here allows the caller to call setOutputDevice() without conditions 4260 if ((device == AUDIO_DEVICE_NONE || device == prevDevice) && !force) { 4261 ALOGV("setOutputDevice() setting same device %04x or null device for output %d", device, output); 4262 return muteWaitMs; 4263 } 4264 4265 ALOGV("setOutputDevice() changing device"); 4266 4267 // do the routing 4268 if (device == AUDIO_DEVICE_NONE) { 4269 resetOutputDevice(output, delayMs, NULL); 4270 } else { 4271 DeviceVector deviceList = (address == NULL) ? 4272 mAvailableOutputDevices.getDevicesFromType(device) 4273 : mAvailableOutputDevices.getDevicesFromTypeAddr(device, String8(address)); 4274 if (!deviceList.isEmpty()) { 4275 struct audio_patch patch; 4276 outputDesc->toAudioPortConfig(&patch.sources[0]); 4277 patch.num_sources = 1; 4278 patch.num_sinks = 0; 4279 for (size_t i = 0; i < deviceList.size() && i < AUDIO_PATCH_PORTS_MAX; i++) { 4280 deviceList.itemAt(i)->toAudioPortConfig(&patch.sinks[i]); 4281 patch.num_sinks++; 4282 } 4283 ssize_t index; 4284 if (patchHandle && *patchHandle != AUDIO_PATCH_HANDLE_NONE) { 4285 index = mAudioPatches.indexOfKey(*patchHandle); 4286 } else { 4287 index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 4288 } 4289 sp< AudioPatch> patchDesc; 4290 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 4291 if (index >= 0) { 4292 patchDesc = mAudioPatches.valueAt(index); 4293 afPatchHandle = patchDesc->mAfPatchHandle; 4294 } 4295 4296 status_t status = mpClientInterface->createAudioPatch(&patch, 4297 &afPatchHandle, 4298 delayMs); 4299 ALOGV("setOutputDevice() createAudioPatch returned %d patchHandle %d" 4300 "num_sources %d num_sinks %d", 4301 status, afPatchHandle, patch.num_sources, patch.num_sinks); 4302 if (status == NO_ERROR) { 4303 if (index < 0) { 4304 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 4305 &patch, mUidCached); 4306 addAudioPatch(patchDesc->mHandle, patchDesc); 4307 } else { 4308 patchDesc->mPatch = patch; 4309 } 4310 patchDesc->mAfPatchHandle = afPatchHandle; 4311 patchDesc->mUid = mUidCached; 4312 if (patchHandle) { 4313 *patchHandle = patchDesc->mHandle; 4314 } 4315 outputDesc->mPatchHandle = patchDesc->mHandle; 4316 nextAudioPortGeneration(); 4317 mpClientInterface->onAudioPatchListUpdate(); 4318 } 4319 } 4320 4321 // inform all input as well 4322 for (size_t i = 0; i < mInputs.size(); i++) { 4323 const sp<AudioInputDescriptor> inputDescriptor = mInputs.valueAt(i); 4324 if (!isVirtualInputDevice(inputDescriptor->mDevice)) { 4325 AudioParameter inputCmd = AudioParameter(); 4326 ALOGV("%s: inform input %d of device:%d", __func__, 4327 inputDescriptor->mIoHandle, device); 4328 inputCmd.addInt(String8(AudioParameter::keyRouting),device); 4329 mpClientInterface->setParameters(inputDescriptor->mIoHandle, 4330 inputCmd.toString(), 4331 delayMs); 4332 } 4333 } 4334 } 4335 4336 // update stream volumes according to new device 4337 applyStreamVolumes(output, device, delayMs); 4338 4339 return muteWaitMs; 4340} 4341 4342status_t AudioPolicyManager::resetOutputDevice(audio_io_handle_t output, 4343 int delayMs, 4344 audio_patch_handle_t *patchHandle) 4345{ 4346 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 4347 ssize_t index; 4348 if (patchHandle) { 4349 index = mAudioPatches.indexOfKey(*patchHandle); 4350 } else { 4351 index = mAudioPatches.indexOfKey(outputDesc->mPatchHandle); 4352 } 4353 if (index < 0) { 4354 return INVALID_OPERATION; 4355 } 4356 sp< AudioPatch> patchDesc = mAudioPatches.valueAt(index); 4357 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, delayMs); 4358 ALOGV("resetOutputDevice() releaseAudioPatch returned %d", status); 4359 outputDesc->mPatchHandle = 0; 4360 removeAudioPatch(patchDesc->mHandle); 4361 nextAudioPortGeneration(); 4362 mpClientInterface->onAudioPatchListUpdate(); 4363 return status; 4364} 4365 4366status_t AudioPolicyManager::setInputDevice(audio_io_handle_t input, 4367 audio_devices_t device, 4368 bool force, 4369 audio_patch_handle_t *patchHandle) 4370{ 4371 status_t status = NO_ERROR; 4372 4373 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 4374 if ((device != AUDIO_DEVICE_NONE) && ((device != inputDesc->mDevice) || force)) { 4375 inputDesc->mDevice = device; 4376 4377 DeviceVector deviceList = mAvailableInputDevices.getDevicesFromType(device); 4378 if (!deviceList.isEmpty()) { 4379 struct audio_patch patch; 4380 inputDesc->toAudioPortConfig(&patch.sinks[0]); 4381 // AUDIO_SOURCE_HOTWORD is for internal use only: 4382 // handled as AUDIO_SOURCE_VOICE_RECOGNITION by the audio HAL 4383 if (patch.sinks[0].ext.mix.usecase.source == AUDIO_SOURCE_HOTWORD && 4384 !inputDesc->mIsSoundTrigger) { 4385 patch.sinks[0].ext.mix.usecase.source = AUDIO_SOURCE_VOICE_RECOGNITION; 4386 } 4387 patch.num_sinks = 1; 4388 //only one input device for now 4389 deviceList.itemAt(0)->toAudioPortConfig(&patch.sources[0]); 4390 patch.num_sources = 1; 4391 ssize_t index; 4392 if (patchHandle && *patchHandle != AUDIO_PATCH_HANDLE_NONE) { 4393 index = mAudioPatches.indexOfKey(*patchHandle); 4394 } else { 4395 index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 4396 } 4397 sp< AudioPatch> patchDesc; 4398 audio_patch_handle_t afPatchHandle = AUDIO_PATCH_HANDLE_NONE; 4399 if (index >= 0) { 4400 patchDesc = mAudioPatches.valueAt(index); 4401 afPatchHandle = patchDesc->mAfPatchHandle; 4402 } 4403 4404 status_t status = mpClientInterface->createAudioPatch(&patch, 4405 &afPatchHandle, 4406 0); 4407 ALOGV("setInputDevice() createAudioPatch returned %d patchHandle %d", 4408 status, afPatchHandle); 4409 if (status == NO_ERROR) { 4410 if (index < 0) { 4411 patchDesc = new AudioPatch((audio_patch_handle_t)nextUniqueId(), 4412 &patch, mUidCached); 4413 addAudioPatch(patchDesc->mHandle, patchDesc); 4414 } else { 4415 patchDesc->mPatch = patch; 4416 } 4417 patchDesc->mAfPatchHandle = afPatchHandle; 4418 patchDesc->mUid = mUidCached; 4419 if (patchHandle) { 4420 *patchHandle = patchDesc->mHandle; 4421 } 4422 inputDesc->mPatchHandle = patchDesc->mHandle; 4423 nextAudioPortGeneration(); 4424 mpClientInterface->onAudioPatchListUpdate(); 4425 } 4426 } 4427 } 4428 return status; 4429} 4430 4431status_t AudioPolicyManager::resetInputDevice(audio_io_handle_t input, 4432 audio_patch_handle_t *patchHandle) 4433{ 4434 sp<AudioInputDescriptor> inputDesc = mInputs.valueFor(input); 4435 ssize_t index; 4436 if (patchHandle) { 4437 index = mAudioPatches.indexOfKey(*patchHandle); 4438 } else { 4439 index = mAudioPatches.indexOfKey(inputDesc->mPatchHandle); 4440 } 4441 if (index < 0) { 4442 return INVALID_OPERATION; 4443 } 4444 sp< AudioPatch> patchDesc = mAudioPatches.valueAt(index); 4445 status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0); 4446 ALOGV("resetInputDevice() releaseAudioPatch returned %d", status); 4447 inputDesc->mPatchHandle = 0; 4448 removeAudioPatch(patchDesc->mHandle); 4449 nextAudioPortGeneration(); 4450 mpClientInterface->onAudioPatchListUpdate(); 4451 return status; 4452} 4453 4454sp<AudioPolicyManager::IOProfile> AudioPolicyManager::getInputProfile(audio_devices_t device, 4455 uint32_t& samplingRate, 4456 audio_format_t format, 4457 audio_channel_mask_t channelMask, 4458 audio_input_flags_t flags) 4459{ 4460 // Choose an input profile based on the requested capture parameters: select the first available 4461 // profile supporting all requested parameters. 4462 4463 for (size_t i = 0; i < mHwModules.size(); i++) 4464 { 4465 if (mHwModules[i]->mHandle == 0) { 4466 continue; 4467 } 4468 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) 4469 { 4470 sp<IOProfile> profile = mHwModules[i]->mInputProfiles[j]; 4471 // profile->log(); 4472 if (profile->isCompatibleProfile(device, samplingRate, 4473 &samplingRate /*updatedSamplingRate*/, 4474 format, channelMask, (audio_output_flags_t) flags)) { 4475 return profile; 4476 } 4477 } 4478 } 4479 return NULL; 4480} 4481 4482audio_devices_t AudioPolicyManager::getDeviceForInputSource(audio_source_t inputSource) 4483{ 4484 uint32_t device = AUDIO_DEVICE_NONE; 4485 audio_devices_t availableDeviceTypes = mAvailableInputDevices.types() & 4486 ~AUDIO_DEVICE_BIT_IN; 4487 switch (inputSource) { 4488 case AUDIO_SOURCE_VOICE_UPLINK: 4489 if (availableDeviceTypes & AUDIO_DEVICE_IN_VOICE_CALL) { 4490 device = AUDIO_DEVICE_IN_VOICE_CALL; 4491 break; 4492 } 4493 break; 4494 4495 case AUDIO_SOURCE_DEFAULT: 4496 case AUDIO_SOURCE_MIC: 4497 if (availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) { 4498 device = AUDIO_DEVICE_IN_BLUETOOTH_A2DP; 4499 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_WIRED_HEADSET) { 4500 device = AUDIO_DEVICE_IN_WIRED_HEADSET; 4501 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_USB_DEVICE) { 4502 device = AUDIO_DEVICE_IN_USB_DEVICE; 4503 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 4504 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 4505 } 4506 break; 4507 4508 case AUDIO_SOURCE_VOICE_COMMUNICATION: 4509 // Allow only use of devices on primary input if in call and HAL does not support routing 4510 // to voice call path. 4511 if ((mPhoneState == AUDIO_MODE_IN_CALL) && 4512 (mAvailableOutputDevices.types() & AUDIO_DEVICE_OUT_TELEPHONY_TX) == 0) { 4513 availableDeviceTypes = availablePrimaryInputDevices() & ~AUDIO_DEVICE_BIT_IN; 4514 } 4515 4516 switch (mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]) { 4517 case AUDIO_POLICY_FORCE_BT_SCO: 4518 // if SCO device is requested but no SCO device is available, fall back to default case 4519 if (availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) { 4520 device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET; 4521 break; 4522 } 4523 // FALL THROUGH 4524 4525 default: // FORCE_NONE 4526 if (availableDeviceTypes & AUDIO_DEVICE_IN_WIRED_HEADSET) { 4527 device = AUDIO_DEVICE_IN_WIRED_HEADSET; 4528 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_USB_DEVICE) { 4529 device = AUDIO_DEVICE_IN_USB_DEVICE; 4530 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 4531 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 4532 } 4533 break; 4534 4535 case AUDIO_POLICY_FORCE_SPEAKER: 4536 if (availableDeviceTypes & AUDIO_DEVICE_IN_BACK_MIC) { 4537 device = AUDIO_DEVICE_IN_BACK_MIC; 4538 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 4539 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 4540 } 4541 break; 4542 } 4543 break; 4544 4545 case AUDIO_SOURCE_VOICE_RECOGNITION: 4546 case AUDIO_SOURCE_HOTWORD: 4547 if (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] == AUDIO_POLICY_FORCE_BT_SCO && 4548 availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) { 4549 device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET; 4550 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_WIRED_HEADSET) { 4551 device = AUDIO_DEVICE_IN_WIRED_HEADSET; 4552 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_USB_DEVICE) { 4553 device = AUDIO_DEVICE_IN_USB_DEVICE; 4554 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 4555 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 4556 } 4557 break; 4558 case AUDIO_SOURCE_CAMCORDER: 4559 if (availableDeviceTypes & AUDIO_DEVICE_IN_BACK_MIC) { 4560 device = AUDIO_DEVICE_IN_BACK_MIC; 4561 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_BUILTIN_MIC) { 4562 device = AUDIO_DEVICE_IN_BUILTIN_MIC; 4563 } 4564 break; 4565 case AUDIO_SOURCE_VOICE_DOWNLINK: 4566 case AUDIO_SOURCE_VOICE_CALL: 4567 if (availableDeviceTypes & AUDIO_DEVICE_IN_VOICE_CALL) { 4568 device = AUDIO_DEVICE_IN_VOICE_CALL; 4569 } 4570 break; 4571 case AUDIO_SOURCE_REMOTE_SUBMIX: 4572 if (availableDeviceTypes & AUDIO_DEVICE_IN_REMOTE_SUBMIX) { 4573 device = AUDIO_DEVICE_IN_REMOTE_SUBMIX; 4574 } 4575 break; 4576 default: 4577 ALOGW("getDeviceForInputSource() invalid input source %d", inputSource); 4578 break; 4579 } 4580 ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device); 4581 return device; 4582} 4583 4584bool AudioPolicyManager::isVirtualInputDevice(audio_devices_t device) 4585{ 4586 if ((device & AUDIO_DEVICE_BIT_IN) != 0) { 4587 device &= ~AUDIO_DEVICE_BIT_IN; 4588 if ((popcount(device) == 1) && ((device & ~APM_AUDIO_IN_DEVICE_VIRTUAL_ALL) == 0)) 4589 return true; 4590 } 4591 return false; 4592} 4593 4594bool AudioPolicyManager::deviceDistinguishesOnAddress(audio_devices_t device) { 4595 return ((device & APM_AUDIO_DEVICE_MATCH_ADDRESS_ALL) != 0); 4596} 4597 4598audio_io_handle_t AudioPolicyManager::getActiveInput(bool ignoreVirtualInputs) 4599{ 4600 for (size_t i = 0; i < mInputs.size(); i++) { 4601 const sp<AudioInputDescriptor> input_descriptor = mInputs.valueAt(i); 4602 if ((input_descriptor->mRefCount > 0) 4603 && (!ignoreVirtualInputs || !isVirtualInputDevice(input_descriptor->mDevice))) { 4604 return mInputs.keyAt(i); 4605 } 4606 } 4607 return 0; 4608} 4609 4610uint32_t AudioPolicyManager::activeInputsCount() const 4611{ 4612 uint32_t count = 0; 4613 for (size_t i = 0; i < mInputs.size(); i++) { 4614 const sp<AudioInputDescriptor> desc = mInputs.valueAt(i); 4615 if (desc->mRefCount > 0) { 4616 return count++; 4617 } 4618 } 4619 return count; 4620} 4621 4622 4623audio_devices_t AudioPolicyManager::getDeviceForVolume(audio_devices_t device) 4624{ 4625 if (device == AUDIO_DEVICE_NONE) { 4626 // this happens when forcing a route update and no track is active on an output. 4627 // In this case the returned category is not important. 4628 device = AUDIO_DEVICE_OUT_SPEAKER; 4629 } else if (popcount(device) > 1) { 4630 // Multiple device selection is either: 4631 // - speaker + one other device: give priority to speaker in this case. 4632 // - one A2DP device + another device: happens with duplicated output. In this case 4633 // retain the device on the A2DP output as the other must not correspond to an active 4634 // selection if not the speaker. 4635 if (device & AUDIO_DEVICE_OUT_SPEAKER) { 4636 device = AUDIO_DEVICE_OUT_SPEAKER; 4637 } else { 4638 device = (audio_devices_t)(device & AUDIO_DEVICE_OUT_ALL_A2DP); 4639 } 4640 } 4641 4642 ALOGW_IF(popcount(device) != 1, 4643 "getDeviceForVolume() invalid device combination: %08x", 4644 device); 4645 4646 return device; 4647} 4648 4649AudioPolicyManager::device_category AudioPolicyManager::getDeviceCategory(audio_devices_t device) 4650{ 4651 switch(getDeviceForVolume(device)) { 4652 case AUDIO_DEVICE_OUT_EARPIECE: 4653 return DEVICE_CATEGORY_EARPIECE; 4654 case AUDIO_DEVICE_OUT_WIRED_HEADSET: 4655 case AUDIO_DEVICE_OUT_WIRED_HEADPHONE: 4656 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO: 4657 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET: 4658 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP: 4659 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES: 4660 return DEVICE_CATEGORY_HEADSET; 4661 case AUDIO_DEVICE_OUT_LINE: 4662 case AUDIO_DEVICE_OUT_AUX_DIGITAL: 4663 /*USB? Remote submix?*/ 4664 return DEVICE_CATEGORY_EXT_MEDIA; 4665 case AUDIO_DEVICE_OUT_SPEAKER: 4666 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT: 4667 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER: 4668 case AUDIO_DEVICE_OUT_USB_ACCESSORY: 4669 case AUDIO_DEVICE_OUT_USB_DEVICE: 4670 case AUDIO_DEVICE_OUT_REMOTE_SUBMIX: 4671 default: 4672 return DEVICE_CATEGORY_SPEAKER; 4673 } 4674} 4675 4676float AudioPolicyManager::volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc, 4677 int indexInUi) 4678{ 4679 device_category deviceCategory = getDeviceCategory(device); 4680 const VolumeCurvePoint *curve = streamDesc.mVolumeCurve[deviceCategory]; 4681 4682 // the volume index in the UI is relative to the min and max volume indices for this stream type 4683 int nbSteps = 1 + curve[VOLMAX].mIndex - 4684 curve[VOLMIN].mIndex; 4685 int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) / 4686 (streamDesc.mIndexMax - streamDesc.mIndexMin); 4687 4688 // find what part of the curve this index volume belongs to, or if it's out of bounds 4689 int segment = 0; 4690 if (volIdx < curve[VOLMIN].mIndex) { // out of bounds 4691 return 0.0f; 4692 } else if (volIdx < curve[VOLKNEE1].mIndex) { 4693 segment = 0; 4694 } else if (volIdx < curve[VOLKNEE2].mIndex) { 4695 segment = 1; 4696 } else if (volIdx <= curve[VOLMAX].mIndex) { 4697 segment = 2; 4698 } else { // out of bounds 4699 return 1.0f; 4700 } 4701 4702 // linear interpolation in the attenuation table in dB 4703 float decibels = curve[segment].mDBAttenuation + 4704 ((float)(volIdx - curve[segment].mIndex)) * 4705 ( (curve[segment+1].mDBAttenuation - 4706 curve[segment].mDBAttenuation) / 4707 ((float)(curve[segment+1].mIndex - 4708 curve[segment].mIndex)) ); 4709 4710 float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 ) 4711 4712 ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f", 4713 curve[segment].mIndex, volIdx, 4714 curve[segment+1].mIndex, 4715 curve[segment].mDBAttenuation, 4716 decibels, 4717 curve[segment+1].mDBAttenuation, 4718 amplification); 4719 4720 return amplification; 4721} 4722 4723const AudioPolicyManager::VolumeCurvePoint 4724 AudioPolicyManager::sDefaultVolumeCurve[AudioPolicyManager::VOLCNT] = { 4725 {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f} 4726}; 4727 4728const AudioPolicyManager::VolumeCurvePoint 4729 AudioPolicyManager::sDefaultMediaVolumeCurve[AudioPolicyManager::VOLCNT] = { 4730 {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f} 4731}; 4732 4733const AudioPolicyManager::VolumeCurvePoint 4734 AudioPolicyManager::sExtMediaSystemVolumeCurve[AudioPolicyManager::VOLCNT] = { 4735 {1, -58.0f}, {20, -40.0f}, {60, -21.0f}, {100, -10.0f} 4736}; 4737 4738const AudioPolicyManager::VolumeCurvePoint 4739 AudioPolicyManager::sSpeakerMediaVolumeCurve[AudioPolicyManager::VOLCNT] = { 4740 {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f} 4741}; 4742 4743const AudioPolicyManager::VolumeCurvePoint 4744 AudioPolicyManager::sSpeakerMediaVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4745 {1, -55.0f}, {20, -43.0f}, {86, -12.0f}, {100, 0.0f} 4746}; 4747 4748const AudioPolicyManager::VolumeCurvePoint 4749 AudioPolicyManager::sSpeakerSonificationVolumeCurve[AudioPolicyManager::VOLCNT] = { 4750 {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f} 4751}; 4752 4753const AudioPolicyManager::VolumeCurvePoint 4754 AudioPolicyManager::sSpeakerSonificationVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4755 {1, -35.7f}, {33, -26.1f}, {66, -13.2f}, {100, 0.0f} 4756}; 4757 4758// AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks 4759// AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets. 4760// AUDIO_STREAM_DTMF tracks AUDIO_STREAM_VOICE_CALL while in call (See AudioService.java). 4761// The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset. 4762 4763const AudioPolicyManager::VolumeCurvePoint 4764 AudioPolicyManager::sDefaultSystemVolumeCurve[AudioPolicyManager::VOLCNT] = { 4765 {1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f} 4766}; 4767 4768const AudioPolicyManager::VolumeCurvePoint 4769 AudioPolicyManager::sDefaultSystemVolumeCurveDrc[AudioPolicyManager::VOLCNT] = { 4770 {1, -34.0f}, {33, -24.0f}, {66, -15.0f}, {100, -6.0f} 4771}; 4772 4773const AudioPolicyManager::VolumeCurvePoint 4774 AudioPolicyManager::sHeadsetSystemVolumeCurve[AudioPolicyManager::VOLCNT] = { 4775 {1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f} 4776}; 4777 4778const AudioPolicyManager::VolumeCurvePoint 4779 AudioPolicyManager::sDefaultVoiceVolumeCurve[AudioPolicyManager::VOLCNT] = { 4780 {0, -42.0f}, {33, -28.0f}, {66, -14.0f}, {100, 0.0f} 4781}; 4782 4783const AudioPolicyManager::VolumeCurvePoint 4784 AudioPolicyManager::sSpeakerVoiceVolumeCurve[AudioPolicyManager::VOLCNT] = { 4785 {0, -24.0f}, {33, -16.0f}, {66, -8.0f}, {100, 0.0f} 4786}; 4787 4788const AudioPolicyManager::VolumeCurvePoint 4789 *AudioPolicyManager::sVolumeProfiles[AUDIO_STREAM_CNT] 4790 [AudioPolicyManager::DEVICE_CATEGORY_CNT] = { 4791 { // AUDIO_STREAM_VOICE_CALL 4792 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET 4793 sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4794 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4795 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4796 }, 4797 { // AUDIO_STREAM_SYSTEM 4798 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4799 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4800 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4801 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4802 }, 4803 { // AUDIO_STREAM_RING 4804 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4805 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4806 sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4807 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4808 }, 4809 { // AUDIO_STREAM_MUSIC 4810 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET 4811 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4812 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4813 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4814 }, 4815 { // AUDIO_STREAM_ALARM 4816 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4817 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4818 sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4819 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4820 }, 4821 { // AUDIO_STREAM_NOTIFICATION 4822 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 4823 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4824 sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4825 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4826 }, 4827 { // AUDIO_STREAM_BLUETOOTH_SCO 4828 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET 4829 sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4830 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4831 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4832 }, 4833 { // AUDIO_STREAM_ENFORCED_AUDIBLE 4834 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4835 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4836 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4837 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4838 }, 4839 { // AUDIO_STREAM_DTMF 4840 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 4841 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4842 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4843 sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4844 }, 4845 { // AUDIO_STREAM_TTS 4846 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET 4847 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER 4848 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_EARPIECE 4849 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA 4850 }, 4851}; 4852 4853void AudioPolicyManager::initializeVolumeCurves() 4854{ 4855 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 4856 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { 4857 mStreams[i].mVolumeCurve[j] = 4858 sVolumeProfiles[i][j]; 4859 } 4860 } 4861 4862 // Check availability of DRC on speaker path: if available, override some of the speaker curves 4863 if (mSpeakerDrcEnabled) { 4864 mStreams[AUDIO_STREAM_SYSTEM].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4865 sDefaultSystemVolumeCurveDrc; 4866 mStreams[AUDIO_STREAM_RING].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4867 sSpeakerSonificationVolumeCurveDrc; 4868 mStreams[AUDIO_STREAM_ALARM].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4869 sSpeakerSonificationVolumeCurveDrc; 4870 mStreams[AUDIO_STREAM_NOTIFICATION].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4871 sSpeakerSonificationVolumeCurveDrc; 4872 mStreams[AUDIO_STREAM_MUSIC].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] = 4873 sSpeakerMediaVolumeCurveDrc; 4874 } 4875} 4876 4877float AudioPolicyManager::computeVolume(audio_stream_type_t stream, 4878 int index, 4879 audio_io_handle_t output, 4880 audio_devices_t device) 4881{ 4882 float volume = 1.0; 4883 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 4884 StreamDescriptor &streamDesc = mStreams[stream]; 4885 4886 if (device == AUDIO_DEVICE_NONE) { 4887 device = outputDesc->device(); 4888 } 4889 4890 volume = volIndexToAmpl(device, streamDesc, index); 4891 4892 // if a headset is connected, apply the following rules to ring tones and notifications 4893 // to avoid sound level bursts in user's ears: 4894 // - always attenuate ring tones and notifications volume by 6dB 4895 // - if music is playing, always limit the volume to current music volume, 4896 // with a minimum threshold at -36dB so that notification is always perceived. 4897 const routing_strategy stream_strategy = getStrategy(stream); 4898 if ((device & (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP | 4899 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | 4900 AUDIO_DEVICE_OUT_WIRED_HEADSET | 4901 AUDIO_DEVICE_OUT_WIRED_HEADPHONE)) && 4902 ((stream_strategy == STRATEGY_SONIFICATION) 4903 || (stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL) 4904 || (stream == AUDIO_STREAM_SYSTEM) 4905 || ((stream_strategy == STRATEGY_ENFORCED_AUDIBLE) && 4906 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_NONE))) && 4907 streamDesc.mCanBeMuted) { 4908 volume *= SONIFICATION_HEADSET_VOLUME_FACTOR; 4909 // when the phone is ringing we must consider that music could have been paused just before 4910 // by the music application and behave as if music was active if the last music track was 4911 // just stopped 4912 if (isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY) || 4913 mLimitRingtoneVolume) { 4914 audio_devices_t musicDevice = getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/); 4915 float musicVol = computeVolume(AUDIO_STREAM_MUSIC, 4916 mStreams[AUDIO_STREAM_MUSIC].getVolumeIndex(musicDevice), 4917 output, 4918 musicDevice); 4919 float minVol = (musicVol > SONIFICATION_HEADSET_VOLUME_MIN) ? 4920 musicVol : SONIFICATION_HEADSET_VOLUME_MIN; 4921 if (volume > minVol) { 4922 volume = minVol; 4923 ALOGV("computeVolume limiting volume to %f musicVol %f", minVol, musicVol); 4924 } 4925 } 4926 } 4927 4928 return volume; 4929} 4930 4931status_t AudioPolicyManager::checkAndSetVolume(audio_stream_type_t stream, 4932 int index, 4933 audio_io_handle_t output, 4934 audio_devices_t device, 4935 int delayMs, 4936 bool force) 4937{ 4938 4939 // do not change actual stream volume if the stream is muted 4940 if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) { 4941 ALOGVV("checkAndSetVolume() stream %d muted count %d", 4942 stream, mOutputs.valueFor(output)->mMuteCount[stream]); 4943 return NO_ERROR; 4944 } 4945 4946 // do not change in call volume if bluetooth is connected and vice versa 4947 if ((stream == AUDIO_STREAM_VOICE_CALL && 4948 mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] == AUDIO_POLICY_FORCE_BT_SCO) || 4949 (stream == AUDIO_STREAM_BLUETOOTH_SCO && 4950 mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] != AUDIO_POLICY_FORCE_BT_SCO)) { 4951 ALOGV("checkAndSetVolume() cannot set stream %d volume with force use = %d for comm", 4952 stream, mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]); 4953 return INVALID_OPERATION; 4954 } 4955 4956 float volume = computeVolume(stream, index, output, device); 4957 // We actually change the volume if: 4958 // - the float value returned by computeVolume() changed 4959 // - the force flag is set 4960 if (volume != mOutputs.valueFor(output)->mCurVolume[stream] || 4961 force) { 4962 mOutputs.valueFor(output)->mCurVolume[stream] = volume; 4963 ALOGVV("checkAndSetVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs); 4964 // Force VOICE_CALL to track BLUETOOTH_SCO stream volume when bluetooth audio is 4965 // enabled 4966 if (stream == AUDIO_STREAM_BLUETOOTH_SCO) { 4967 mpClientInterface->setStreamVolume(AUDIO_STREAM_VOICE_CALL, volume, output, delayMs); 4968 } 4969 mpClientInterface->setStreamVolume(stream, volume, output, delayMs); 4970 } 4971 4972 if (stream == AUDIO_STREAM_VOICE_CALL || 4973 stream == AUDIO_STREAM_BLUETOOTH_SCO) { 4974 float voiceVolume; 4975 // Force voice volume to max for bluetooth SCO as volume is managed by the headset 4976 if (stream == AUDIO_STREAM_VOICE_CALL) { 4977 voiceVolume = (float)index/(float)mStreams[stream].mIndexMax; 4978 } else { 4979 voiceVolume = 1.0; 4980 } 4981 4982 if (voiceVolume != mLastVoiceVolume && output == mPrimaryOutput) { 4983 mpClientInterface->setVoiceVolume(voiceVolume, delayMs); 4984 mLastVoiceVolume = voiceVolume; 4985 } 4986 } 4987 4988 return NO_ERROR; 4989} 4990 4991void AudioPolicyManager::applyStreamVolumes(audio_io_handle_t output, 4992 audio_devices_t device, 4993 int delayMs, 4994 bool force) 4995{ 4996 ALOGVV("applyStreamVolumes() for output %d and device %x", output, device); 4997 4998 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 4999 checkAndSetVolume((audio_stream_type_t)stream, 5000 mStreams[stream].getVolumeIndex(device), 5001 output, 5002 device, 5003 delayMs, 5004 force); 5005 } 5006} 5007 5008void AudioPolicyManager::setStrategyMute(routing_strategy strategy, 5009 bool on, 5010 audio_io_handle_t output, 5011 int delayMs, 5012 audio_devices_t device) 5013{ 5014 ALOGVV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output); 5015 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 5016 if (getStrategy((audio_stream_type_t)stream) == strategy) { 5017 setStreamMute((audio_stream_type_t)stream, on, output, delayMs, device); 5018 } 5019 } 5020} 5021 5022void AudioPolicyManager::setStreamMute(audio_stream_type_t stream, 5023 bool on, 5024 audio_io_handle_t output, 5025 int delayMs, 5026 audio_devices_t device) 5027{ 5028 StreamDescriptor &streamDesc = mStreams[stream]; 5029 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output); 5030 if (device == AUDIO_DEVICE_NONE) { 5031 device = outputDesc->device(); 5032 } 5033 5034 ALOGVV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d device %04x", 5035 stream, on, output, outputDesc->mMuteCount[stream], device); 5036 5037 if (on) { 5038 if (outputDesc->mMuteCount[stream] == 0) { 5039 if (streamDesc.mCanBeMuted && 5040 ((stream != AUDIO_STREAM_ENFORCED_AUDIBLE) || 5041 (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_NONE))) { 5042 checkAndSetVolume(stream, 0, output, device, delayMs); 5043 } 5044 } 5045 // increment mMuteCount after calling checkAndSetVolume() so that volume change is not ignored 5046 outputDesc->mMuteCount[stream]++; 5047 } else { 5048 if (outputDesc->mMuteCount[stream] == 0) { 5049 ALOGV("setStreamMute() unmuting non muted stream!"); 5050 return; 5051 } 5052 if (--outputDesc->mMuteCount[stream] == 0) { 5053 checkAndSetVolume(stream, 5054 streamDesc.getVolumeIndex(device), 5055 output, 5056 device, 5057 delayMs); 5058 } 5059 } 5060} 5061 5062void AudioPolicyManager::handleIncallSonification(audio_stream_type_t stream, 5063 bool starting, bool stateChange) 5064{ 5065 // if the stream pertains to sonification strategy and we are in call we must 5066 // mute the stream if it is low visibility. If it is high visibility, we must play a tone 5067 // in the device used for phone strategy and play the tone if the selected device does not 5068 // interfere with the device used for phone strategy 5069 // if stateChange is true, we are called from setPhoneState() and we must mute or unmute as 5070 // many times as there are active tracks on the output 5071 const routing_strategy stream_strategy = getStrategy(stream); 5072 if ((stream_strategy == STRATEGY_SONIFICATION) || 5073 ((stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL))) { 5074 sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(mPrimaryOutput); 5075 ALOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d", 5076 stream, starting, outputDesc->mDevice, stateChange); 5077 if (outputDesc->mRefCount[stream]) { 5078 int muteCount = 1; 5079 if (stateChange) { 5080 muteCount = outputDesc->mRefCount[stream]; 5081 } 5082 if (audio_is_low_visibility(stream)) { 5083 ALOGV("handleIncallSonification() low visibility, muteCount %d", muteCount); 5084 for (int i = 0; i < muteCount; i++) { 5085 setStreamMute(stream, starting, mPrimaryOutput); 5086 } 5087 } else { 5088 ALOGV("handleIncallSonification() high visibility"); 5089 if (outputDesc->device() & 5090 getDeviceForStrategy(STRATEGY_PHONE, true /*fromCache*/)) { 5091 ALOGV("handleIncallSonification() high visibility muted, muteCount %d", muteCount); 5092 for (int i = 0; i < muteCount; i++) { 5093 setStreamMute(stream, starting, mPrimaryOutput); 5094 } 5095 } 5096 if (starting) { 5097 mpClientInterface->startTone(AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION, 5098 AUDIO_STREAM_VOICE_CALL); 5099 } else { 5100 mpClientInterface->stopTone(); 5101 } 5102 } 5103 } 5104 } 5105} 5106 5107bool AudioPolicyManager::isInCall() 5108{ 5109 return isStateInCall(mPhoneState); 5110} 5111 5112bool AudioPolicyManager::isStateInCall(int state) { 5113 return ((state == AUDIO_MODE_IN_CALL) || 5114 (state == AUDIO_MODE_IN_COMMUNICATION)); 5115} 5116 5117uint32_t AudioPolicyManager::getMaxEffectsCpuLoad() 5118{ 5119 return MAX_EFFECTS_CPU_LOAD; 5120} 5121 5122uint32_t AudioPolicyManager::getMaxEffectsMemory() 5123{ 5124 return MAX_EFFECTS_MEMORY; 5125} 5126 5127 5128// --- AudioOutputDescriptor class implementation 5129 5130AudioPolicyManager::AudioOutputDescriptor::AudioOutputDescriptor( 5131 const sp<IOProfile>& profile) 5132 : mId(0), mIoHandle(0), mLatency(0), 5133 mFlags((audio_output_flags_t)0), mDevice(AUDIO_DEVICE_NONE), mPatchHandle(0), 5134 mOutput1(0), mOutput2(0), mProfile(profile), mDirectOpenCount(0) 5135{ 5136 // clear usage count for all stream types 5137 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 5138 mRefCount[i] = 0; 5139 mCurVolume[i] = -1.0; 5140 mMuteCount[i] = 0; 5141 mStopTime[i] = 0; 5142 } 5143 for (int i = 0; i < NUM_STRATEGIES; i++) { 5144 mStrategyMutedByDevice[i] = false; 5145 } 5146 if (profile != NULL) { 5147 mFlags = profile->mFlags; 5148 mSamplingRate = profile->pickSamplingRate(); 5149 mFormat = profile->pickFormat(); 5150 mChannelMask = profile->pickChannelMask(); 5151 if (profile->mGains.size() > 0) { 5152 profile->mGains[0]->getDefaultConfig(&mGain); 5153 } 5154 } 5155} 5156 5157audio_devices_t AudioPolicyManager::AudioOutputDescriptor::device() const 5158{ 5159 if (isDuplicated()) { 5160 return (audio_devices_t)(mOutput1->mDevice | mOutput2->mDevice); 5161 } else { 5162 return mDevice; 5163 } 5164} 5165 5166uint32_t AudioPolicyManager::AudioOutputDescriptor::latency() 5167{ 5168 if (isDuplicated()) { 5169 return (mOutput1->mLatency > mOutput2->mLatency) ? mOutput1->mLatency : mOutput2->mLatency; 5170 } else { 5171 return mLatency; 5172 } 5173} 5174 5175bool AudioPolicyManager::AudioOutputDescriptor::sharesHwModuleWith( 5176 const sp<AudioOutputDescriptor> outputDesc) 5177{ 5178 if (isDuplicated()) { 5179 return mOutput1->sharesHwModuleWith(outputDesc) || mOutput2->sharesHwModuleWith(outputDesc); 5180 } else if (outputDesc->isDuplicated()){ 5181 return sharesHwModuleWith(outputDesc->mOutput1) || sharesHwModuleWith(outputDesc->mOutput2); 5182 } else { 5183 return (mProfile->mModule == outputDesc->mProfile->mModule); 5184 } 5185} 5186 5187void AudioPolicyManager::AudioOutputDescriptor::changeRefCount(audio_stream_type_t stream, 5188 int delta) 5189{ 5190 // forward usage count change to attached outputs 5191 if (isDuplicated()) { 5192 mOutput1->changeRefCount(stream, delta); 5193 mOutput2->changeRefCount(stream, delta); 5194 } 5195 if ((delta + (int)mRefCount[stream]) < 0) { 5196 ALOGW("changeRefCount() invalid delta %d for stream %d, refCount %d", 5197 delta, stream, mRefCount[stream]); 5198 mRefCount[stream] = 0; 5199 return; 5200 } 5201 mRefCount[stream] += delta; 5202 ALOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]); 5203} 5204 5205audio_devices_t AudioPolicyManager::AudioOutputDescriptor::supportedDevices() 5206{ 5207 if (isDuplicated()) { 5208 return (audio_devices_t)(mOutput1->supportedDevices() | mOutput2->supportedDevices()); 5209 } else { 5210 return mProfile->mSupportedDevices.types() ; 5211 } 5212} 5213 5214bool AudioPolicyManager::AudioOutputDescriptor::isActive(uint32_t inPastMs) const 5215{ 5216 return isStrategyActive(NUM_STRATEGIES, inPastMs); 5217} 5218 5219bool AudioPolicyManager::AudioOutputDescriptor::isStrategyActive(routing_strategy strategy, 5220 uint32_t inPastMs, 5221 nsecs_t sysTime) const 5222{ 5223 if ((sysTime == 0) && (inPastMs != 0)) { 5224 sysTime = systemTime(); 5225 } 5226 for (int i = 0; i < (int)AUDIO_STREAM_CNT; i++) { 5227 if (((getStrategy((audio_stream_type_t)i) == strategy) || 5228 (NUM_STRATEGIES == strategy)) && 5229 isStreamActive((audio_stream_type_t)i, inPastMs, sysTime)) { 5230 return true; 5231 } 5232 } 5233 return false; 5234} 5235 5236bool AudioPolicyManager::AudioOutputDescriptor::isStreamActive(audio_stream_type_t stream, 5237 uint32_t inPastMs, 5238 nsecs_t sysTime) const 5239{ 5240 if (mRefCount[stream] != 0) { 5241 return true; 5242 } 5243 if (inPastMs == 0) { 5244 return false; 5245 } 5246 if (sysTime == 0) { 5247 sysTime = systemTime(); 5248 } 5249 if (ns2ms(sysTime - mStopTime[stream]) < inPastMs) { 5250 return true; 5251 } 5252 return false; 5253} 5254 5255void AudioPolicyManager::AudioOutputDescriptor::toAudioPortConfig( 5256 struct audio_port_config *dstConfig, 5257 const struct audio_port_config *srcConfig) const 5258{ 5259 ALOG_ASSERT(!isDuplicated(), "toAudioPortConfig() called on duplicated output %d", mIoHandle); 5260 5261 dstConfig->config_mask = AUDIO_PORT_CONFIG_SAMPLE_RATE|AUDIO_PORT_CONFIG_CHANNEL_MASK| 5262 AUDIO_PORT_CONFIG_FORMAT|AUDIO_PORT_CONFIG_GAIN; 5263 if (srcConfig != NULL) { 5264 dstConfig->config_mask |= srcConfig->config_mask; 5265 } 5266 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 5267 5268 dstConfig->id = mId; 5269 dstConfig->role = AUDIO_PORT_ROLE_SOURCE; 5270 dstConfig->type = AUDIO_PORT_TYPE_MIX; 5271 dstConfig->ext.mix.hw_module = mProfile->mModule->mHandle; 5272 dstConfig->ext.mix.handle = mIoHandle; 5273 dstConfig->ext.mix.usecase.stream = AUDIO_STREAM_DEFAULT; 5274} 5275 5276void AudioPolicyManager::AudioOutputDescriptor::toAudioPort( 5277 struct audio_port *port) const 5278{ 5279 ALOG_ASSERT(!isDuplicated(), "toAudioPort() called on duplicated output %d", mIoHandle); 5280 mProfile->toAudioPort(port); 5281 port->id = mId; 5282 toAudioPortConfig(&port->active_config); 5283 port->ext.mix.hw_module = mProfile->mModule->mHandle; 5284 port->ext.mix.handle = mIoHandle; 5285 port->ext.mix.latency_class = 5286 mFlags & AUDIO_OUTPUT_FLAG_FAST ? AUDIO_LATENCY_LOW : AUDIO_LATENCY_NORMAL; 5287} 5288 5289status_t AudioPolicyManager::AudioOutputDescriptor::dump(int fd) 5290{ 5291 const size_t SIZE = 256; 5292 char buffer[SIZE]; 5293 String8 result; 5294 5295 snprintf(buffer, SIZE, " ID: %d\n", mId); 5296 result.append(buffer); 5297 snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); 5298 result.append(buffer); 5299 snprintf(buffer, SIZE, " Format: %08x\n", mFormat); 5300 result.append(buffer); 5301 snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask); 5302 result.append(buffer); 5303 snprintf(buffer, SIZE, " Latency: %d\n", mLatency); 5304 result.append(buffer); 5305 snprintf(buffer, SIZE, " Flags %08x\n", mFlags); 5306 result.append(buffer); 5307 snprintf(buffer, SIZE, " Devices %08x\n", device()); 5308 result.append(buffer); 5309 snprintf(buffer, SIZE, " Stream volume refCount muteCount\n"); 5310 result.append(buffer); 5311 for (int i = 0; i < (int)AUDIO_STREAM_CNT; i++) { 5312 snprintf(buffer, SIZE, " %02d %.03f %02d %02d\n", 5313 i, mCurVolume[i], mRefCount[i], mMuteCount[i]); 5314 result.append(buffer); 5315 } 5316 write(fd, result.string(), result.size()); 5317 5318 return NO_ERROR; 5319} 5320 5321// --- AudioInputDescriptor class implementation 5322 5323AudioPolicyManager::AudioInputDescriptor::AudioInputDescriptor(const sp<IOProfile>& profile) 5324 : mId(0), mIoHandle(0), 5325 mDevice(AUDIO_DEVICE_NONE), mPatchHandle(0), mRefCount(0), 5326 mInputSource(AUDIO_SOURCE_DEFAULT), mProfile(profile), mIsSoundTrigger(false) 5327{ 5328 if (profile != NULL) { 5329 mSamplingRate = profile->pickSamplingRate(); 5330 mFormat = profile->pickFormat(); 5331 mChannelMask = profile->pickChannelMask(); 5332 if (profile->mGains.size() > 0) { 5333 profile->mGains[0]->getDefaultConfig(&mGain); 5334 } 5335 } 5336} 5337 5338void AudioPolicyManager::AudioInputDescriptor::toAudioPortConfig( 5339 struct audio_port_config *dstConfig, 5340 const struct audio_port_config *srcConfig) const 5341{ 5342 ALOG_ASSERT(mProfile != 0, 5343 "toAudioPortConfig() called on input with null profile %d", mIoHandle); 5344 dstConfig->config_mask = AUDIO_PORT_CONFIG_SAMPLE_RATE|AUDIO_PORT_CONFIG_CHANNEL_MASK| 5345 AUDIO_PORT_CONFIG_FORMAT|AUDIO_PORT_CONFIG_GAIN; 5346 if (srcConfig != NULL) { 5347 dstConfig->config_mask |= srcConfig->config_mask; 5348 } 5349 5350 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 5351 5352 dstConfig->id = mId; 5353 dstConfig->role = AUDIO_PORT_ROLE_SINK; 5354 dstConfig->type = AUDIO_PORT_TYPE_MIX; 5355 dstConfig->ext.mix.hw_module = mProfile->mModule->mHandle; 5356 dstConfig->ext.mix.handle = mIoHandle; 5357 dstConfig->ext.mix.usecase.source = mInputSource; 5358} 5359 5360void AudioPolicyManager::AudioInputDescriptor::toAudioPort( 5361 struct audio_port *port) const 5362{ 5363 ALOG_ASSERT(mProfile != 0, "toAudioPort() called on input with null profile %d", mIoHandle); 5364 5365 mProfile->toAudioPort(port); 5366 port->id = mId; 5367 toAudioPortConfig(&port->active_config); 5368 port->ext.mix.hw_module = mProfile->mModule->mHandle; 5369 port->ext.mix.handle = mIoHandle; 5370 port->ext.mix.latency_class = AUDIO_LATENCY_NORMAL; 5371} 5372 5373status_t AudioPolicyManager::AudioInputDescriptor::dump(int fd) 5374{ 5375 const size_t SIZE = 256; 5376 char buffer[SIZE]; 5377 String8 result; 5378 5379 snprintf(buffer, SIZE, " ID: %d\n", mId); 5380 result.append(buffer); 5381 snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); 5382 result.append(buffer); 5383 snprintf(buffer, SIZE, " Format: %d\n", mFormat); 5384 result.append(buffer); 5385 snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask); 5386 result.append(buffer); 5387 snprintf(buffer, SIZE, " Devices %08x\n", mDevice); 5388 result.append(buffer); 5389 snprintf(buffer, SIZE, " Ref Count %d\n", mRefCount); 5390 result.append(buffer); 5391 snprintf(buffer, SIZE, " Open Ref Count %d\n", mOpenRefCount); 5392 result.append(buffer); 5393 5394 write(fd, result.string(), result.size()); 5395 5396 return NO_ERROR; 5397} 5398 5399// --- StreamDescriptor class implementation 5400 5401AudioPolicyManager::StreamDescriptor::StreamDescriptor() 5402 : mIndexMin(0), mIndexMax(1), mCanBeMuted(true) 5403{ 5404 mIndexCur.add(AUDIO_DEVICE_OUT_DEFAULT, 0); 5405} 5406 5407int AudioPolicyManager::StreamDescriptor::getVolumeIndex(audio_devices_t device) 5408{ 5409 device = AudioPolicyManager::getDeviceForVolume(device); 5410 // there is always a valid entry for AUDIO_DEVICE_OUT_DEFAULT 5411 if (mIndexCur.indexOfKey(device) < 0) { 5412 device = AUDIO_DEVICE_OUT_DEFAULT; 5413 } 5414 return mIndexCur.valueFor(device); 5415} 5416 5417void AudioPolicyManager::StreamDescriptor::dump(int fd) 5418{ 5419 const size_t SIZE = 256; 5420 char buffer[SIZE]; 5421 String8 result; 5422 5423 snprintf(buffer, SIZE, "%s %02d %02d ", 5424 mCanBeMuted ? "true " : "false", mIndexMin, mIndexMax); 5425 result.append(buffer); 5426 for (size_t i = 0; i < mIndexCur.size(); i++) { 5427 snprintf(buffer, SIZE, "%04x : %02d, ", 5428 mIndexCur.keyAt(i), 5429 mIndexCur.valueAt(i)); 5430 result.append(buffer); 5431 } 5432 result.append("\n"); 5433 5434 write(fd, result.string(), result.size()); 5435} 5436 5437// --- EffectDescriptor class implementation 5438 5439status_t AudioPolicyManager::EffectDescriptor::dump(int fd) 5440{ 5441 const size_t SIZE = 256; 5442 char buffer[SIZE]; 5443 String8 result; 5444 5445 snprintf(buffer, SIZE, " I/O: %d\n", mIo); 5446 result.append(buffer); 5447 snprintf(buffer, SIZE, " Strategy: %d\n", mStrategy); 5448 result.append(buffer); 5449 snprintf(buffer, SIZE, " Session: %d\n", mSession); 5450 result.append(buffer); 5451 snprintf(buffer, SIZE, " Name: %s\n", mDesc.name); 5452 result.append(buffer); 5453 snprintf(buffer, SIZE, " %s\n", mEnabled ? "Enabled" : "Disabled"); 5454 result.append(buffer); 5455 write(fd, result.string(), result.size()); 5456 5457 return NO_ERROR; 5458} 5459 5460// --- HwModule class implementation 5461 5462AudioPolicyManager::HwModule::HwModule(const char *name) 5463 : mName(strndup(name, AUDIO_HARDWARE_MODULE_ID_MAX_LEN)), 5464 mHalVersion(AUDIO_DEVICE_API_VERSION_MIN), mHandle(0) 5465{ 5466} 5467 5468AudioPolicyManager::HwModule::~HwModule() 5469{ 5470 for (size_t i = 0; i < mOutputProfiles.size(); i++) { 5471 mOutputProfiles[i]->mSupportedDevices.clear(); 5472 } 5473 for (size_t i = 0; i < mInputProfiles.size(); i++) { 5474 mInputProfiles[i]->mSupportedDevices.clear(); 5475 } 5476 free((void *)mName); 5477} 5478 5479status_t AudioPolicyManager::HwModule::loadInput(cnode *root) 5480{ 5481 cnode *node = root->first_child; 5482 5483 sp<IOProfile> profile = new IOProfile(String8(root->name), AUDIO_PORT_ROLE_SINK, this); 5484 5485 while (node) { 5486 if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) { 5487 profile->loadSamplingRates((char *)node->value); 5488 } else if (strcmp(node->name, FORMATS_TAG) == 0) { 5489 profile->loadFormats((char *)node->value); 5490 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 5491 profile->loadInChannels((char *)node->value); 5492 } else if (strcmp(node->name, DEVICES_TAG) == 0) { 5493 profile->mSupportedDevices.loadDevicesFromName((char *)node->value, 5494 mDeclaredDevices); 5495 } else if (strcmp(node->name, GAINS_TAG) == 0) { 5496 profile->loadGains(node); 5497 } 5498 node = node->next; 5499 } 5500 ALOGW_IF(profile->mSupportedDevices.isEmpty(), 5501 "loadInput() invalid supported devices"); 5502 ALOGW_IF(profile->mChannelMasks.size() == 0, 5503 "loadInput() invalid supported channel masks"); 5504 ALOGW_IF(profile->mSamplingRates.size() == 0, 5505 "loadInput() invalid supported sampling rates"); 5506 ALOGW_IF(profile->mFormats.size() == 0, 5507 "loadInput() invalid supported formats"); 5508 if (!profile->mSupportedDevices.isEmpty() && 5509 (profile->mChannelMasks.size() != 0) && 5510 (profile->mSamplingRates.size() != 0) && 5511 (profile->mFormats.size() != 0)) { 5512 5513 ALOGV("loadInput() adding input Supported Devices %04x", 5514 profile->mSupportedDevices.types()); 5515 5516 mInputProfiles.add(profile); 5517 return NO_ERROR; 5518 } else { 5519 return BAD_VALUE; 5520 } 5521} 5522 5523status_t AudioPolicyManager::HwModule::loadOutput(cnode *root) 5524{ 5525 cnode *node = root->first_child; 5526 5527 sp<IOProfile> profile = new IOProfile(String8(root->name), AUDIO_PORT_ROLE_SOURCE, this); 5528 5529 while (node) { 5530 if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) { 5531 profile->loadSamplingRates((char *)node->value); 5532 } else if (strcmp(node->name, FORMATS_TAG) == 0) { 5533 profile->loadFormats((char *)node->value); 5534 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 5535 profile->loadOutChannels((char *)node->value); 5536 } else if (strcmp(node->name, DEVICES_TAG) == 0) { 5537 profile->mSupportedDevices.loadDevicesFromName((char *)node->value, 5538 mDeclaredDevices); 5539 } else if (strcmp(node->name, FLAGS_TAG) == 0) { 5540 profile->mFlags = parseFlagNames((char *)node->value); 5541 } else if (strcmp(node->name, GAINS_TAG) == 0) { 5542 profile->loadGains(node); 5543 } 5544 node = node->next; 5545 } 5546 ALOGW_IF(profile->mSupportedDevices.isEmpty(), 5547 "loadOutput() invalid supported devices"); 5548 ALOGW_IF(profile->mChannelMasks.size() == 0, 5549 "loadOutput() invalid supported channel masks"); 5550 ALOGW_IF(profile->mSamplingRates.size() == 0, 5551 "loadOutput() invalid supported sampling rates"); 5552 ALOGW_IF(profile->mFormats.size() == 0, 5553 "loadOutput() invalid supported formats"); 5554 if (!profile->mSupportedDevices.isEmpty() && 5555 (profile->mChannelMasks.size() != 0) && 5556 (profile->mSamplingRates.size() != 0) && 5557 (profile->mFormats.size() != 0)) { 5558 5559 ALOGV("loadOutput() adding output Supported Devices %04x, mFlags %04x", 5560 profile->mSupportedDevices.types(), profile->mFlags); 5561 5562 mOutputProfiles.add(profile); 5563 return NO_ERROR; 5564 } else { 5565 return BAD_VALUE; 5566 } 5567} 5568 5569status_t AudioPolicyManager::HwModule::loadDevice(cnode *root) 5570{ 5571 cnode *node = root->first_child; 5572 5573 audio_devices_t type = AUDIO_DEVICE_NONE; 5574 while (node) { 5575 if (strcmp(node->name, DEVICE_TYPE) == 0) { 5576 type = parseDeviceNames((char *)node->value); 5577 break; 5578 } 5579 node = node->next; 5580 } 5581 if (type == AUDIO_DEVICE_NONE || 5582 (!audio_is_input_device(type) && !audio_is_output_device(type))) { 5583 ALOGW("loadDevice() bad type %08x", type); 5584 return BAD_VALUE; 5585 } 5586 sp<DeviceDescriptor> deviceDesc = new DeviceDescriptor(String8(root->name), type); 5587 deviceDesc->mModule = this; 5588 5589 node = root->first_child; 5590 while (node) { 5591 if (strcmp(node->name, DEVICE_ADDRESS) == 0) { 5592 deviceDesc->mAddress = String8((char *)node->value); 5593 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 5594 if (audio_is_input_device(type)) { 5595 deviceDesc->loadInChannels((char *)node->value); 5596 } else { 5597 deviceDesc->loadOutChannels((char *)node->value); 5598 } 5599 } else if (strcmp(node->name, GAINS_TAG) == 0) { 5600 deviceDesc->loadGains(node); 5601 } 5602 node = node->next; 5603 } 5604 5605 ALOGV("loadDevice() adding device name %s type %08x address %s", 5606 deviceDesc->mName.string(), type, deviceDesc->mAddress.string()); 5607 5608 mDeclaredDevices.add(deviceDesc); 5609 5610 return NO_ERROR; 5611} 5612 5613void AudioPolicyManager::HwModule::dump(int fd) 5614{ 5615 const size_t SIZE = 256; 5616 char buffer[SIZE]; 5617 String8 result; 5618 5619 snprintf(buffer, SIZE, " - name: %s\n", mName); 5620 result.append(buffer); 5621 snprintf(buffer, SIZE, " - handle: %d\n", mHandle); 5622 result.append(buffer); 5623 snprintf(buffer, SIZE, " - version: %u.%u\n", mHalVersion >> 8, mHalVersion & 0xFF); 5624 result.append(buffer); 5625 write(fd, result.string(), result.size()); 5626 if (mOutputProfiles.size()) { 5627 write(fd, " - outputs:\n", strlen(" - outputs:\n")); 5628 for (size_t i = 0; i < mOutputProfiles.size(); i++) { 5629 snprintf(buffer, SIZE, " output %zu:\n", i); 5630 write(fd, buffer, strlen(buffer)); 5631 mOutputProfiles[i]->dump(fd); 5632 } 5633 } 5634 if (mInputProfiles.size()) { 5635 write(fd, " - inputs:\n", strlen(" - inputs:\n")); 5636 for (size_t i = 0; i < mInputProfiles.size(); i++) { 5637 snprintf(buffer, SIZE, " input %zu:\n", i); 5638 write(fd, buffer, strlen(buffer)); 5639 mInputProfiles[i]->dump(fd); 5640 } 5641 } 5642 if (mDeclaredDevices.size()) { 5643 write(fd, " - devices:\n", strlen(" - devices:\n")); 5644 for (size_t i = 0; i < mDeclaredDevices.size(); i++) { 5645 mDeclaredDevices[i]->dump(fd, 4, i); 5646 } 5647 } 5648} 5649 5650// --- AudioPort class implementation 5651 5652 5653AudioPolicyManager::AudioPort::AudioPort(const String8& name, audio_port_type_t type, 5654 audio_port_role_t role, const sp<HwModule>& module) : 5655 mName(name), mType(type), mRole(role), mModule(module), mFlags((audio_output_flags_t)0) 5656{ 5657 mUseInChannelMask = ((type == AUDIO_PORT_TYPE_DEVICE) && (role == AUDIO_PORT_ROLE_SOURCE)) || 5658 ((type == AUDIO_PORT_TYPE_MIX) && (role == AUDIO_PORT_ROLE_SINK)); 5659} 5660 5661void AudioPolicyManager::AudioPort::toAudioPort(struct audio_port *port) const 5662{ 5663 port->role = mRole; 5664 port->type = mType; 5665 unsigned int i; 5666 for (i = 0; i < mSamplingRates.size() && i < AUDIO_PORT_MAX_SAMPLING_RATES; i++) { 5667 if (mSamplingRates[i] != 0) { 5668 port->sample_rates[i] = mSamplingRates[i]; 5669 } 5670 } 5671 port->num_sample_rates = i; 5672 for (i = 0; i < mChannelMasks.size() && i < AUDIO_PORT_MAX_CHANNEL_MASKS; i++) { 5673 if (mChannelMasks[i] != 0) { 5674 port->channel_masks[i] = mChannelMasks[i]; 5675 } 5676 } 5677 port->num_channel_masks = i; 5678 for (i = 0; i < mFormats.size() && i < AUDIO_PORT_MAX_FORMATS; i++) { 5679 if (mFormats[i] != 0) { 5680 port->formats[i] = mFormats[i]; 5681 } 5682 } 5683 port->num_formats = i; 5684 5685 ALOGV("AudioPort::toAudioPort() num gains %zu", mGains.size()); 5686 5687 for (i = 0; i < mGains.size() && i < AUDIO_PORT_MAX_GAINS; i++) { 5688 port->gains[i] = mGains[i]->mGain; 5689 } 5690 port->num_gains = i; 5691} 5692 5693void AudioPolicyManager::AudioPort::importAudioPort(const sp<AudioPort> port) { 5694 for (size_t k = 0 ; k < port->mSamplingRates.size() ; k++) { 5695 const uint32_t rate = port->mSamplingRates.itemAt(k); 5696 if (rate != 0) { // skip "dynamic" rates 5697 bool hasRate = false; 5698 for (size_t l = 0 ; l < mSamplingRates.size() ; l++) { 5699 if (rate == mSamplingRates.itemAt(l)) { 5700 hasRate = true; 5701 break; 5702 } 5703 } 5704 if (!hasRate) { // never import a sampling rate twice 5705 mSamplingRates.add(rate); 5706 } 5707 } 5708 } 5709 for (size_t k = 0 ; k < port->mChannelMasks.size() ; k++) { 5710 const audio_channel_mask_t mask = port->mChannelMasks.itemAt(k); 5711 if (mask != 0) { // skip "dynamic" masks 5712 bool hasMask = false; 5713 for (size_t l = 0 ; l < mChannelMasks.size() ; l++) { 5714 if (mask == mChannelMasks.itemAt(l)) { 5715 hasMask = true; 5716 break; 5717 } 5718 } 5719 if (!hasMask) { // never import a channel mask twice 5720 mChannelMasks.add(mask); 5721 } 5722 } 5723 } 5724 for (size_t k = 0 ; k < port->mFormats.size() ; k++) { 5725 const audio_format_t format = port->mFormats.itemAt(k); 5726 if (format != 0) { // skip "dynamic" formats 5727 bool hasFormat = false; 5728 for (size_t l = 0 ; l < mFormats.size() ; l++) { 5729 if (format == mFormats.itemAt(l)) { 5730 hasFormat = true; 5731 break; 5732 } 5733 } 5734 if (!hasFormat) { // never import a channel mask twice 5735 mFormats.add(format); 5736 } 5737 } 5738 } 5739} 5740 5741void AudioPolicyManager::AudioPort::clearCapabilities() { 5742 mChannelMasks.clear(); 5743 mFormats.clear(); 5744 mSamplingRates.clear(); 5745} 5746 5747void AudioPolicyManager::AudioPort::loadSamplingRates(char *name) 5748{ 5749 char *str = strtok(name, "|"); 5750 5751 // by convention, "0' in the first entry in mSamplingRates indicates the supported sampling 5752 // rates should be read from the output stream after it is opened for the first time 5753 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5754 mSamplingRates.add(0); 5755 return; 5756 } 5757 5758 while (str != NULL) { 5759 uint32_t rate = atoi(str); 5760 if (rate != 0) { 5761 ALOGV("loadSamplingRates() adding rate %d", rate); 5762 mSamplingRates.add(rate); 5763 } 5764 str = strtok(NULL, "|"); 5765 } 5766} 5767 5768void AudioPolicyManager::AudioPort::loadFormats(char *name) 5769{ 5770 char *str = strtok(name, "|"); 5771 5772 // by convention, "0' in the first entry in mFormats indicates the supported formats 5773 // should be read from the output stream after it is opened for the first time 5774 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5775 mFormats.add(AUDIO_FORMAT_DEFAULT); 5776 return; 5777 } 5778 5779 while (str != NULL) { 5780 audio_format_t format = (audio_format_t)stringToEnum(sFormatNameToEnumTable, 5781 ARRAY_SIZE(sFormatNameToEnumTable), 5782 str); 5783 if (format != AUDIO_FORMAT_DEFAULT) { 5784 mFormats.add(format); 5785 } 5786 str = strtok(NULL, "|"); 5787 } 5788} 5789 5790void AudioPolicyManager::AudioPort::loadInChannels(char *name) 5791{ 5792 const char *str = strtok(name, "|"); 5793 5794 ALOGV("loadInChannels() %s", name); 5795 5796 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5797 mChannelMasks.add(0); 5798 return; 5799 } 5800 5801 while (str != NULL) { 5802 audio_channel_mask_t channelMask = 5803 (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable, 5804 ARRAY_SIZE(sInChannelsNameToEnumTable), 5805 str); 5806 if (channelMask != 0) { 5807 ALOGV("loadInChannels() adding channelMask %04x", channelMask); 5808 mChannelMasks.add(channelMask); 5809 } 5810 str = strtok(NULL, "|"); 5811 } 5812} 5813 5814void AudioPolicyManager::AudioPort::loadOutChannels(char *name) 5815{ 5816 const char *str = strtok(name, "|"); 5817 5818 ALOGV("loadOutChannels() %s", name); 5819 5820 // by convention, "0' in the first entry in mChannelMasks indicates the supported channel 5821 // masks should be read from the output stream after it is opened for the first time 5822 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 5823 mChannelMasks.add(0); 5824 return; 5825 } 5826 5827 while (str != NULL) { 5828 audio_channel_mask_t channelMask = 5829 (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable, 5830 ARRAY_SIZE(sOutChannelsNameToEnumTable), 5831 str); 5832 if (channelMask != 0) { 5833 mChannelMasks.add(channelMask); 5834 } 5835 str = strtok(NULL, "|"); 5836 } 5837 return; 5838} 5839 5840audio_gain_mode_t AudioPolicyManager::AudioPort::loadGainMode(char *name) 5841{ 5842 const char *str = strtok(name, "|"); 5843 5844 ALOGV("loadGainMode() %s", name); 5845 audio_gain_mode_t mode = 0; 5846 while (str != NULL) { 5847 mode |= (audio_gain_mode_t)stringToEnum(sGainModeNameToEnumTable, 5848 ARRAY_SIZE(sGainModeNameToEnumTable), 5849 str); 5850 str = strtok(NULL, "|"); 5851 } 5852 return mode; 5853} 5854 5855void AudioPolicyManager::AudioPort::loadGain(cnode *root, int index) 5856{ 5857 cnode *node = root->first_child; 5858 5859 sp<AudioGain> gain = new AudioGain(index, mUseInChannelMask); 5860 5861 while (node) { 5862 if (strcmp(node->name, GAIN_MODE) == 0) { 5863 gain->mGain.mode = loadGainMode((char *)node->value); 5864 } else if (strcmp(node->name, GAIN_CHANNELS) == 0) { 5865 if (mUseInChannelMask) { 5866 gain->mGain.channel_mask = 5867 (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable, 5868 ARRAY_SIZE(sInChannelsNameToEnumTable), 5869 (char *)node->value); 5870 } else { 5871 gain->mGain.channel_mask = 5872 (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable, 5873 ARRAY_SIZE(sOutChannelsNameToEnumTable), 5874 (char *)node->value); 5875 } 5876 } else if (strcmp(node->name, GAIN_MIN_VALUE) == 0) { 5877 gain->mGain.min_value = atoi((char *)node->value); 5878 } else if (strcmp(node->name, GAIN_MAX_VALUE) == 0) { 5879 gain->mGain.max_value = atoi((char *)node->value); 5880 } else if (strcmp(node->name, GAIN_DEFAULT_VALUE) == 0) { 5881 gain->mGain.default_value = atoi((char *)node->value); 5882 } else if (strcmp(node->name, GAIN_STEP_VALUE) == 0) { 5883 gain->mGain.step_value = atoi((char *)node->value); 5884 } else if (strcmp(node->name, GAIN_MIN_RAMP_MS) == 0) { 5885 gain->mGain.min_ramp_ms = atoi((char *)node->value); 5886 } else if (strcmp(node->name, GAIN_MAX_RAMP_MS) == 0) { 5887 gain->mGain.max_ramp_ms = atoi((char *)node->value); 5888 } 5889 node = node->next; 5890 } 5891 5892 ALOGV("loadGain() adding new gain mode %08x channel mask %08x min mB %d max mB %d", 5893 gain->mGain.mode, gain->mGain.channel_mask, gain->mGain.min_value, gain->mGain.max_value); 5894 5895 if (gain->mGain.mode == 0) { 5896 return; 5897 } 5898 mGains.add(gain); 5899} 5900 5901void AudioPolicyManager::AudioPort::loadGains(cnode *root) 5902{ 5903 cnode *node = root->first_child; 5904 int index = 0; 5905 while (node) { 5906 ALOGV("loadGains() loading gain %s", node->name); 5907 loadGain(node, index++); 5908 node = node->next; 5909 } 5910} 5911 5912status_t AudioPolicyManager::AudioPort::checkExactSamplingRate(uint32_t samplingRate) const 5913{ 5914 for (size_t i = 0; i < mSamplingRates.size(); i ++) { 5915 if (mSamplingRates[i] == samplingRate) { 5916 return NO_ERROR; 5917 } 5918 } 5919 return BAD_VALUE; 5920} 5921 5922status_t AudioPolicyManager::AudioPort::checkCompatibleSamplingRate(uint32_t samplingRate, 5923 uint32_t *updatedSamplingRate) const 5924{ 5925 // Search for the closest supported sampling rate that is above (preferred) 5926 // or below (acceptable) the desired sampling rate, within a permitted ratio. 5927 // The sampling rates do not need to be sorted in ascending order. 5928 ssize_t maxBelow = -1; 5929 ssize_t minAbove = -1; 5930 uint32_t candidate; 5931 for (size_t i = 0; i < mSamplingRates.size(); i++) { 5932 candidate = mSamplingRates[i]; 5933 if (candidate == samplingRate) { 5934 if (updatedSamplingRate != NULL) { 5935 *updatedSamplingRate = candidate; 5936 } 5937 return NO_ERROR; 5938 } 5939 // candidate < desired 5940 if (candidate < samplingRate) { 5941 if (maxBelow < 0 || candidate > mSamplingRates[maxBelow]) { 5942 maxBelow = i; 5943 } 5944 // candidate > desired 5945 } else { 5946 if (minAbove < 0 || candidate < mSamplingRates[minAbove]) { 5947 minAbove = i; 5948 } 5949 } 5950 } 5951 // This uses hard-coded knowledge about AudioFlinger resampling ratios. 5952 // TODO Move these assumptions out. 5953 static const uint32_t kMaxDownSampleRatio = 6; // beyond this aliasing occurs 5954 static const uint32_t kMaxUpSampleRatio = 256; // beyond this sample rate inaccuracies occur 5955 // due to approximation by an int32_t of the 5956 // phase increments 5957 // Prefer to down-sample from a higher sampling rate, as we get the desired frequency spectrum. 5958 if (minAbove >= 0) { 5959 candidate = mSamplingRates[minAbove]; 5960 if (candidate / kMaxDownSampleRatio <= samplingRate) { 5961 if (updatedSamplingRate != NULL) { 5962 *updatedSamplingRate = candidate; 5963 } 5964 return NO_ERROR; 5965 } 5966 } 5967 // But if we have to up-sample from a lower sampling rate, that's OK. 5968 if (maxBelow >= 0) { 5969 candidate = mSamplingRates[maxBelow]; 5970 if (candidate * kMaxUpSampleRatio >= samplingRate) { 5971 if (updatedSamplingRate != NULL) { 5972 *updatedSamplingRate = candidate; 5973 } 5974 return NO_ERROR; 5975 } 5976 } 5977 // leave updatedSamplingRate unmodified 5978 return BAD_VALUE; 5979} 5980 5981status_t AudioPolicyManager::AudioPort::checkExactChannelMask(audio_channel_mask_t channelMask) const 5982{ 5983 for (size_t i = 0; i < mChannelMasks.size(); i++) { 5984 if (mChannelMasks[i] == channelMask) { 5985 return NO_ERROR; 5986 } 5987 } 5988 return BAD_VALUE; 5989} 5990 5991status_t AudioPolicyManager::AudioPort::checkCompatibleChannelMask(audio_channel_mask_t channelMask) 5992 const 5993{ 5994 const bool isRecordThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SINK; 5995 for (size_t i = 0; i < mChannelMasks.size(); i ++) { 5996 // FIXME Does not handle multi-channel automatic conversions yet 5997 audio_channel_mask_t supported = mChannelMasks[i]; 5998 if (supported == channelMask) { 5999 return NO_ERROR; 6000 } 6001 if (isRecordThread) { 6002 // This uses hard-coded knowledge that AudioFlinger can silently down-mix and up-mix. 6003 // FIXME Abstract this out to a table. 6004 if (((supported == AUDIO_CHANNEL_IN_FRONT_BACK || supported == AUDIO_CHANNEL_IN_STEREO) 6005 && channelMask == AUDIO_CHANNEL_IN_MONO) || 6006 (supported == AUDIO_CHANNEL_IN_MONO && (channelMask == AUDIO_CHANNEL_IN_FRONT_BACK 6007 || channelMask == AUDIO_CHANNEL_IN_STEREO))) { 6008 return NO_ERROR; 6009 } 6010 } 6011 } 6012 return BAD_VALUE; 6013} 6014 6015status_t AudioPolicyManager::AudioPort::checkFormat(audio_format_t format) const 6016{ 6017 for (size_t i = 0; i < mFormats.size(); i ++) { 6018 if (mFormats[i] == format) { 6019 return NO_ERROR; 6020 } 6021 } 6022 return BAD_VALUE; 6023} 6024 6025 6026uint32_t AudioPolicyManager::AudioPort::pickSamplingRate() const 6027{ 6028 // special case for uninitialized dynamic profile 6029 if (mSamplingRates.size() == 1 && mSamplingRates[0] == 0) { 6030 return 0; 6031 } 6032 6033 uint32_t samplingRate = 0; 6034 uint32_t maxRate = MAX_MIXER_SAMPLING_RATE; 6035 6036 // For mixed output and inputs, use max mixer sampling rates. Do not 6037 // limit sampling rate otherwise 6038 if ((mType != AUDIO_PORT_TYPE_MIX) || 6039 ((mRole == AUDIO_PORT_ROLE_SOURCE) && 6040 (mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)))) { 6041 maxRate = UINT_MAX; 6042 } 6043 for (size_t i = 0; i < mSamplingRates.size(); i ++) { 6044 if ((mSamplingRates[i] > samplingRate) && (mSamplingRates[i] <= maxRate)) { 6045 samplingRate = mSamplingRates[i]; 6046 } 6047 } 6048 return samplingRate; 6049} 6050 6051audio_channel_mask_t AudioPolicyManager::AudioPort::pickChannelMask() const 6052{ 6053 // special case for uninitialized dynamic profile 6054 if (mChannelMasks.size() == 1 && mChannelMasks[0] == 0) { 6055 return AUDIO_CHANNEL_NONE; 6056 } 6057 6058 audio_channel_mask_t channelMask = AUDIO_CHANNEL_NONE; 6059 uint32_t channelCount = 0; 6060 uint32_t maxCount = MAX_MIXER_CHANNEL_COUNT; 6061 6062 // For mixed output and inputs, use max mixer channel count. Do not 6063 // limit channel count otherwise 6064 if ((mType != AUDIO_PORT_TYPE_MIX) || 6065 ((mRole == AUDIO_PORT_ROLE_SOURCE) && 6066 (mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)))) { 6067 maxCount = UINT_MAX; 6068 } 6069 for (size_t i = 0; i < mChannelMasks.size(); i ++) { 6070 uint32_t cnlCount; 6071 if (mUseInChannelMask) { 6072 cnlCount = audio_channel_count_from_in_mask(mChannelMasks[i]); 6073 } else { 6074 cnlCount = audio_channel_count_from_out_mask(mChannelMasks[i]); 6075 } 6076 if ((cnlCount > channelCount) && (cnlCount <= maxCount)) { 6077 channelMask = mChannelMasks[i]; 6078 } 6079 } 6080 return channelMask; 6081} 6082 6083/* format in order of increasing preference */ 6084const audio_format_t AudioPolicyManager::AudioPort::sPcmFormatCompareTable[] = { 6085 AUDIO_FORMAT_DEFAULT, 6086 AUDIO_FORMAT_PCM_16_BIT, 6087 AUDIO_FORMAT_PCM_8_24_BIT, 6088 AUDIO_FORMAT_PCM_24_BIT_PACKED, 6089 AUDIO_FORMAT_PCM_32_BIT, 6090 AUDIO_FORMAT_PCM_FLOAT, 6091}; 6092 6093int AudioPolicyManager::AudioPort::compareFormats(audio_format_t format1, 6094 audio_format_t format2) 6095{ 6096 // NOTE: AUDIO_FORMAT_INVALID is also considered not PCM and will be compared equal to any 6097 // compressed format and better than any PCM format. This is by design of pickFormat() 6098 if (!audio_is_linear_pcm(format1)) { 6099 if (!audio_is_linear_pcm(format2)) { 6100 return 0; 6101 } 6102 return 1; 6103 } 6104 if (!audio_is_linear_pcm(format2)) { 6105 return -1; 6106 } 6107 6108 int index1 = -1, index2 = -1; 6109 for (size_t i = 0; 6110 (i < ARRAY_SIZE(sPcmFormatCompareTable)) && ((index1 == -1) || (index2 == -1)); 6111 i ++) { 6112 if (sPcmFormatCompareTable[i] == format1) { 6113 index1 = i; 6114 } 6115 if (sPcmFormatCompareTable[i] == format2) { 6116 index2 = i; 6117 } 6118 } 6119 // format1 not found => index1 < 0 => format2 > format1 6120 // format2 not found => index2 < 0 => format2 < format1 6121 return index1 - index2; 6122} 6123 6124audio_format_t AudioPolicyManager::AudioPort::pickFormat() const 6125{ 6126 // special case for uninitialized dynamic profile 6127 if (mFormats.size() == 1 && mFormats[0] == 0) { 6128 return AUDIO_FORMAT_DEFAULT; 6129 } 6130 6131 audio_format_t format = AUDIO_FORMAT_DEFAULT; 6132 audio_format_t bestFormat = 6133 AudioPolicyManager::AudioPort::sPcmFormatCompareTable[ 6134 ARRAY_SIZE(AudioPolicyManager::AudioPort::sPcmFormatCompareTable) - 1]; 6135 // For mixed output and inputs, use best mixer output format. Do not 6136 // limit format otherwise 6137 if ((mType != AUDIO_PORT_TYPE_MIX) || 6138 ((mRole == AUDIO_PORT_ROLE_SOURCE) && 6139 (((mFlags & (AUDIO_OUTPUT_FLAG_DIRECT | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)) != 0)))) { 6140 bestFormat = AUDIO_FORMAT_INVALID; 6141 } 6142 6143 for (size_t i = 0; i < mFormats.size(); i ++) { 6144 if ((compareFormats(mFormats[i], format) > 0) && 6145 (compareFormats(mFormats[i], bestFormat) <= 0)) { 6146 format = mFormats[i]; 6147 } 6148 } 6149 return format; 6150} 6151 6152status_t AudioPolicyManager::AudioPort::checkGain(const struct audio_gain_config *gainConfig, 6153 int index) const 6154{ 6155 if (index < 0 || (size_t)index >= mGains.size()) { 6156 return BAD_VALUE; 6157 } 6158 return mGains[index]->checkConfig(gainConfig); 6159} 6160 6161void AudioPolicyManager::AudioPort::dump(int fd, int spaces) const 6162{ 6163 const size_t SIZE = 256; 6164 char buffer[SIZE]; 6165 String8 result; 6166 6167 if (mName.size() != 0) { 6168 snprintf(buffer, SIZE, "%*s- name: %s\n", spaces, "", mName.string()); 6169 result.append(buffer); 6170 } 6171 6172 if (mSamplingRates.size() != 0) { 6173 snprintf(buffer, SIZE, "%*s- sampling rates: ", spaces, ""); 6174 result.append(buffer); 6175 for (size_t i = 0; i < mSamplingRates.size(); i++) { 6176 if (i == 0 && mSamplingRates[i] == 0) { 6177 snprintf(buffer, SIZE, "Dynamic"); 6178 } else { 6179 snprintf(buffer, SIZE, "%d", mSamplingRates[i]); 6180 } 6181 result.append(buffer); 6182 result.append(i == (mSamplingRates.size() - 1) ? "" : ", "); 6183 } 6184 result.append("\n"); 6185 } 6186 6187 if (mChannelMasks.size() != 0) { 6188 snprintf(buffer, SIZE, "%*s- channel masks: ", spaces, ""); 6189 result.append(buffer); 6190 for (size_t i = 0; i < mChannelMasks.size(); i++) { 6191 ALOGV("AudioPort::dump mChannelMasks %zu %08x", i, mChannelMasks[i]); 6192 6193 if (i == 0 && mChannelMasks[i] == 0) { 6194 snprintf(buffer, SIZE, "Dynamic"); 6195 } else { 6196 snprintf(buffer, SIZE, "0x%04x", mChannelMasks[i]); 6197 } 6198 result.append(buffer); 6199 result.append(i == (mChannelMasks.size() - 1) ? "" : ", "); 6200 } 6201 result.append("\n"); 6202 } 6203 6204 if (mFormats.size() != 0) { 6205 snprintf(buffer, SIZE, "%*s- formats: ", spaces, ""); 6206 result.append(buffer); 6207 for (size_t i = 0; i < mFormats.size(); i++) { 6208 const char *formatStr = enumToString(sFormatNameToEnumTable, 6209 ARRAY_SIZE(sFormatNameToEnumTable), 6210 mFormats[i]); 6211 if (i == 0 && strcmp(formatStr, "") == 0) { 6212 snprintf(buffer, SIZE, "Dynamic"); 6213 } else { 6214 snprintf(buffer, SIZE, "%s", formatStr); 6215 } 6216 result.append(buffer); 6217 result.append(i == (mFormats.size() - 1) ? "" : ", "); 6218 } 6219 result.append("\n"); 6220 } 6221 write(fd, result.string(), result.size()); 6222 if (mGains.size() != 0) { 6223 snprintf(buffer, SIZE, "%*s- gains:\n", spaces, ""); 6224 write(fd, buffer, strlen(buffer) + 1); 6225 result.append(buffer); 6226 for (size_t i = 0; i < mGains.size(); i++) { 6227 mGains[i]->dump(fd, spaces + 2, i); 6228 } 6229 } 6230} 6231 6232// --- AudioGain class implementation 6233 6234AudioPolicyManager::AudioGain::AudioGain(int index, bool useInChannelMask) 6235{ 6236 mIndex = index; 6237 mUseInChannelMask = useInChannelMask; 6238 memset(&mGain, 0, sizeof(struct audio_gain)); 6239} 6240 6241void AudioPolicyManager::AudioGain::getDefaultConfig(struct audio_gain_config *config) 6242{ 6243 config->index = mIndex; 6244 config->mode = mGain.mode; 6245 config->channel_mask = mGain.channel_mask; 6246 if ((mGain.mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 6247 config->values[0] = mGain.default_value; 6248 } else { 6249 uint32_t numValues; 6250 if (mUseInChannelMask) { 6251 numValues = audio_channel_count_from_in_mask(mGain.channel_mask); 6252 } else { 6253 numValues = audio_channel_count_from_out_mask(mGain.channel_mask); 6254 } 6255 for (size_t i = 0; i < numValues; i++) { 6256 config->values[i] = mGain.default_value; 6257 } 6258 } 6259 if ((mGain.mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 6260 config->ramp_duration_ms = mGain.min_ramp_ms; 6261 } 6262} 6263 6264status_t AudioPolicyManager::AudioGain::checkConfig(const struct audio_gain_config *config) 6265{ 6266 if ((config->mode & ~mGain.mode) != 0) { 6267 return BAD_VALUE; 6268 } 6269 if ((config->mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 6270 if ((config->values[0] < mGain.min_value) || 6271 (config->values[0] > mGain.max_value)) { 6272 return BAD_VALUE; 6273 } 6274 } else { 6275 if ((config->channel_mask & ~mGain.channel_mask) != 0) { 6276 return BAD_VALUE; 6277 } 6278 uint32_t numValues; 6279 if (mUseInChannelMask) { 6280 numValues = audio_channel_count_from_in_mask(config->channel_mask); 6281 } else { 6282 numValues = audio_channel_count_from_out_mask(config->channel_mask); 6283 } 6284 for (size_t i = 0; i < numValues; i++) { 6285 if ((config->values[i] < mGain.min_value) || 6286 (config->values[i] > mGain.max_value)) { 6287 return BAD_VALUE; 6288 } 6289 } 6290 } 6291 if ((config->mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 6292 if ((config->ramp_duration_ms < mGain.min_ramp_ms) || 6293 (config->ramp_duration_ms > mGain.max_ramp_ms)) { 6294 return BAD_VALUE; 6295 } 6296 } 6297 return NO_ERROR; 6298} 6299 6300void AudioPolicyManager::AudioGain::dump(int fd, int spaces, int index) const 6301{ 6302 const size_t SIZE = 256; 6303 char buffer[SIZE]; 6304 String8 result; 6305 6306 snprintf(buffer, SIZE, "%*sGain %d:\n", spaces, "", index+1); 6307 result.append(buffer); 6308 snprintf(buffer, SIZE, "%*s- mode: %08x\n", spaces, "", mGain.mode); 6309 result.append(buffer); 6310 snprintf(buffer, SIZE, "%*s- channel_mask: %08x\n", spaces, "", mGain.channel_mask); 6311 result.append(buffer); 6312 snprintf(buffer, SIZE, "%*s- min_value: %d mB\n", spaces, "", mGain.min_value); 6313 result.append(buffer); 6314 snprintf(buffer, SIZE, "%*s- max_value: %d mB\n", spaces, "", mGain.max_value); 6315 result.append(buffer); 6316 snprintf(buffer, SIZE, "%*s- default_value: %d mB\n", spaces, "", mGain.default_value); 6317 result.append(buffer); 6318 snprintf(buffer, SIZE, "%*s- step_value: %d mB\n", spaces, "", mGain.step_value); 6319 result.append(buffer); 6320 snprintf(buffer, SIZE, "%*s- min_ramp_ms: %d ms\n", spaces, "", mGain.min_ramp_ms); 6321 result.append(buffer); 6322 snprintf(buffer, SIZE, "%*s- max_ramp_ms: %d ms\n", spaces, "", mGain.max_ramp_ms); 6323 result.append(buffer); 6324 6325 write(fd, result.string(), result.size()); 6326} 6327 6328// --- AudioPortConfig class implementation 6329 6330AudioPolicyManager::AudioPortConfig::AudioPortConfig() 6331{ 6332 mSamplingRate = 0; 6333 mChannelMask = AUDIO_CHANNEL_NONE; 6334 mFormat = AUDIO_FORMAT_INVALID; 6335 mGain.index = -1; 6336} 6337 6338status_t AudioPolicyManager::AudioPortConfig::applyAudioPortConfig( 6339 const struct audio_port_config *config, 6340 struct audio_port_config *backupConfig) 6341{ 6342 struct audio_port_config localBackupConfig; 6343 status_t status = NO_ERROR; 6344 6345 localBackupConfig.config_mask = config->config_mask; 6346 toAudioPortConfig(&localBackupConfig); 6347 6348 sp<AudioPort> audioport = getAudioPort(); 6349 if (audioport == 0) { 6350 status = NO_INIT; 6351 goto exit; 6352 } 6353 if (config->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE) { 6354 status = audioport->checkExactSamplingRate(config->sample_rate); 6355 if (status != NO_ERROR) { 6356 goto exit; 6357 } 6358 mSamplingRate = config->sample_rate; 6359 } 6360 if (config->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) { 6361 status = audioport->checkExactChannelMask(config->channel_mask); 6362 if (status != NO_ERROR) { 6363 goto exit; 6364 } 6365 mChannelMask = config->channel_mask; 6366 } 6367 if (config->config_mask & AUDIO_PORT_CONFIG_FORMAT) { 6368 status = audioport->checkFormat(config->format); 6369 if (status != NO_ERROR) { 6370 goto exit; 6371 } 6372 mFormat = config->format; 6373 } 6374 if (config->config_mask & AUDIO_PORT_CONFIG_GAIN) { 6375 status = audioport->checkGain(&config->gain, config->gain.index); 6376 if (status != NO_ERROR) { 6377 goto exit; 6378 } 6379 mGain = config->gain; 6380 } 6381 6382exit: 6383 if (status != NO_ERROR) { 6384 applyAudioPortConfig(&localBackupConfig); 6385 } 6386 if (backupConfig != NULL) { 6387 *backupConfig = localBackupConfig; 6388 } 6389 return status; 6390} 6391 6392void AudioPolicyManager::AudioPortConfig::toAudioPortConfig( 6393 struct audio_port_config *dstConfig, 6394 const struct audio_port_config *srcConfig) const 6395{ 6396 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE) { 6397 dstConfig->sample_rate = mSamplingRate; 6398 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE)) { 6399 dstConfig->sample_rate = srcConfig->sample_rate; 6400 } 6401 } else { 6402 dstConfig->sample_rate = 0; 6403 } 6404 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) { 6405 dstConfig->channel_mask = mChannelMask; 6406 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK)) { 6407 dstConfig->channel_mask = srcConfig->channel_mask; 6408 } 6409 } else { 6410 dstConfig->channel_mask = AUDIO_CHANNEL_NONE; 6411 } 6412 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_FORMAT) { 6413 dstConfig->format = mFormat; 6414 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_FORMAT)) { 6415 dstConfig->format = srcConfig->format; 6416 } 6417 } else { 6418 dstConfig->format = AUDIO_FORMAT_INVALID; 6419 } 6420 if (dstConfig->config_mask & AUDIO_PORT_CONFIG_GAIN) { 6421 dstConfig->gain = mGain; 6422 if ((srcConfig != NULL) && (srcConfig->config_mask & AUDIO_PORT_CONFIG_GAIN)) { 6423 dstConfig->gain = srcConfig->gain; 6424 } 6425 } else { 6426 dstConfig->gain.index = -1; 6427 } 6428 if (dstConfig->gain.index != -1) { 6429 dstConfig->config_mask |= AUDIO_PORT_CONFIG_GAIN; 6430 } else { 6431 dstConfig->config_mask &= ~AUDIO_PORT_CONFIG_GAIN; 6432 } 6433} 6434 6435// --- IOProfile class implementation 6436 6437AudioPolicyManager::IOProfile::IOProfile(const String8& name, audio_port_role_t role, 6438 const sp<HwModule>& module) 6439 : AudioPort(name, AUDIO_PORT_TYPE_MIX, role, module) 6440{ 6441} 6442 6443AudioPolicyManager::IOProfile::~IOProfile() 6444{ 6445} 6446 6447// checks if the IO profile is compatible with specified parameters. 6448// Sampling rate, format and channel mask must be specified in order to 6449// get a valid a match 6450bool AudioPolicyManager::IOProfile::isCompatibleProfile(audio_devices_t device, 6451 uint32_t samplingRate, 6452 uint32_t *updatedSamplingRate, 6453 audio_format_t format, 6454 audio_channel_mask_t channelMask, 6455 audio_output_flags_t flags) const 6456{ 6457 const bool isPlaybackThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SOURCE; 6458 const bool isRecordThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SINK; 6459 ALOG_ASSERT(isPlaybackThread != isRecordThread); 6460 6461 if ((mSupportedDevices.types() & device) != device) { 6462 return false; 6463 } 6464 6465 if (samplingRate == 0) { 6466 return false; 6467 } 6468 uint32_t myUpdatedSamplingRate = samplingRate; 6469 if (isPlaybackThread && checkExactSamplingRate(samplingRate) != NO_ERROR) { 6470 return false; 6471 } 6472 if (isRecordThread && checkCompatibleSamplingRate(samplingRate, &myUpdatedSamplingRate) != 6473 NO_ERROR) { 6474 return false; 6475 } 6476 6477 if (!audio_is_valid_format(format) || checkFormat(format) != NO_ERROR) { 6478 return false; 6479 } 6480 6481 if (isPlaybackThread && (!audio_is_output_channel(channelMask) || 6482 checkExactChannelMask(channelMask) != NO_ERROR)) { 6483 return false; 6484 } 6485 if (isRecordThread && (!audio_is_input_channel(channelMask) || 6486 checkCompatibleChannelMask(channelMask) != NO_ERROR)) { 6487 return false; 6488 } 6489 6490 if (isPlaybackThread && (mFlags & flags) != flags) { 6491 return false; 6492 } 6493 // The only input flag that is allowed to be different is the fast flag. 6494 // An existing fast stream is compatible with a normal track request. 6495 // An existing normal stream is compatible with a fast track request, 6496 // but the fast request will be denied by AudioFlinger and converted to normal track. 6497 if (isRecordThread && (((audio_input_flags_t) mFlags ^ (audio_input_flags_t) flags) & 6498 ~AUDIO_INPUT_FLAG_FAST)) { 6499 return false; 6500 } 6501 6502 if (updatedSamplingRate != NULL) { 6503 *updatedSamplingRate = myUpdatedSamplingRate; 6504 } 6505 return true; 6506} 6507 6508void AudioPolicyManager::IOProfile::dump(int fd) 6509{ 6510 const size_t SIZE = 256; 6511 char buffer[SIZE]; 6512 String8 result; 6513 6514 AudioPort::dump(fd, 4); 6515 6516 snprintf(buffer, SIZE, " - flags: 0x%04x\n", mFlags); 6517 result.append(buffer); 6518 snprintf(buffer, SIZE, " - devices:\n"); 6519 result.append(buffer); 6520 write(fd, result.string(), result.size()); 6521 for (size_t i = 0; i < mSupportedDevices.size(); i++) { 6522 mSupportedDevices[i]->dump(fd, 6, i); 6523 } 6524} 6525 6526void AudioPolicyManager::IOProfile::log() 6527{ 6528 const size_t SIZE = 256; 6529 char buffer[SIZE]; 6530 String8 result; 6531 6532 ALOGV(" - sampling rates: "); 6533 for (size_t i = 0; i < mSamplingRates.size(); i++) { 6534 ALOGV(" %d", mSamplingRates[i]); 6535 } 6536 6537 ALOGV(" - channel masks: "); 6538 for (size_t i = 0; i < mChannelMasks.size(); i++) { 6539 ALOGV(" 0x%04x", mChannelMasks[i]); 6540 } 6541 6542 ALOGV(" - formats: "); 6543 for (size_t i = 0; i < mFormats.size(); i++) { 6544 ALOGV(" 0x%08x", mFormats[i]); 6545 } 6546 6547 ALOGV(" - devices: 0x%04x\n", mSupportedDevices.types()); 6548 ALOGV(" - flags: 0x%04x\n", mFlags); 6549} 6550 6551 6552// --- DeviceDescriptor implementation 6553 6554 6555AudioPolicyManager::DeviceDescriptor::DeviceDescriptor(const String8& name, audio_devices_t type) : 6556 AudioPort(name, AUDIO_PORT_TYPE_DEVICE, 6557 audio_is_output_device(type) ? AUDIO_PORT_ROLE_SINK : 6558 AUDIO_PORT_ROLE_SOURCE, 6559 NULL), 6560 mDeviceType(type), mAddress(""), mId(0) 6561{ 6562 if (mGains.size() > 0) { 6563 mGains[0]->getDefaultConfig(&mGain); 6564 } 6565} 6566 6567bool AudioPolicyManager::DeviceDescriptor::equals(const sp<DeviceDescriptor>& other) const 6568{ 6569 // Devices are considered equal if they: 6570 // - are of the same type (a device type cannot be AUDIO_DEVICE_NONE) 6571 // - have the same address or one device does not specify the address 6572 // - have the same channel mask or one device does not specify the channel mask 6573 return (mDeviceType == other->mDeviceType) && 6574 (mAddress == "" || other->mAddress == "" || mAddress == other->mAddress) && 6575 (mChannelMask == 0 || other->mChannelMask == 0 || 6576 mChannelMask == other->mChannelMask); 6577} 6578 6579void AudioPolicyManager::DeviceVector::refreshTypes() 6580{ 6581 mDeviceTypes = AUDIO_DEVICE_NONE; 6582 for(size_t i = 0; i < size(); i++) { 6583 mDeviceTypes |= itemAt(i)->mDeviceType; 6584 } 6585 ALOGV("DeviceVector::refreshTypes() mDeviceTypes %08x", mDeviceTypes); 6586} 6587 6588ssize_t AudioPolicyManager::DeviceVector::indexOf(const sp<DeviceDescriptor>& item) const 6589{ 6590 for(size_t i = 0; i < size(); i++) { 6591 if (item->equals(itemAt(i))) { 6592 return i; 6593 } 6594 } 6595 return -1; 6596} 6597 6598ssize_t AudioPolicyManager::DeviceVector::add(const sp<DeviceDescriptor>& item) 6599{ 6600 ssize_t ret = indexOf(item); 6601 6602 if (ret < 0) { 6603 ret = SortedVector::add(item); 6604 if (ret >= 0) { 6605 refreshTypes(); 6606 } 6607 } else { 6608 ALOGW("DeviceVector::add device %08x already in", item->mDeviceType); 6609 ret = -1; 6610 } 6611 return ret; 6612} 6613 6614ssize_t AudioPolicyManager::DeviceVector::remove(const sp<DeviceDescriptor>& item) 6615{ 6616 size_t i; 6617 ssize_t ret = indexOf(item); 6618 6619 if (ret < 0) { 6620 ALOGW("DeviceVector::remove device %08x not in", item->mDeviceType); 6621 } else { 6622 ret = SortedVector::removeAt(ret); 6623 if (ret >= 0) { 6624 refreshTypes(); 6625 } 6626 } 6627 return ret; 6628} 6629 6630void AudioPolicyManager::DeviceVector::loadDevicesFromType(audio_devices_t types) 6631{ 6632 DeviceVector deviceList; 6633 6634 uint32_t role_bit = AUDIO_DEVICE_BIT_IN & types; 6635 types &= ~role_bit; 6636 6637 while (types) { 6638 uint32_t i = 31 - __builtin_clz(types); 6639 uint32_t type = 1 << i; 6640 types &= ~type; 6641 add(new DeviceDescriptor(String8(""), type | role_bit)); 6642 } 6643} 6644 6645void AudioPolicyManager::DeviceVector::loadDevicesFromName(char *name, 6646 const DeviceVector& declaredDevices) 6647{ 6648 char *devName = strtok(name, "|"); 6649 while (devName != NULL) { 6650 if (strlen(devName) != 0) { 6651 audio_devices_t type = stringToEnum(sDeviceNameToEnumTable, 6652 ARRAY_SIZE(sDeviceNameToEnumTable), 6653 devName); 6654 if (type != AUDIO_DEVICE_NONE) { 6655 add(new DeviceDescriptor(String8(""), type)); 6656 } else { 6657 sp<DeviceDescriptor> deviceDesc = 6658 declaredDevices.getDeviceFromName(String8(devName)); 6659 if (deviceDesc != 0) { 6660 add(deviceDesc); 6661 } 6662 } 6663 } 6664 devName = strtok(NULL, "|"); 6665 } 6666} 6667 6668sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDevice( 6669 audio_devices_t type, String8 address) const 6670{ 6671 sp<DeviceDescriptor> device; 6672 for (size_t i = 0; i < size(); i++) { 6673 if (itemAt(i)->mDeviceType == type) { 6674 device = itemAt(i); 6675 if (itemAt(i)->mAddress = address) { 6676 break; 6677 } 6678 } 6679 } 6680 ALOGV("DeviceVector::getDevice() for type %d address %s found %p", 6681 type, address.string(), device.get()); 6682 return device; 6683} 6684 6685sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDeviceFromId( 6686 audio_port_handle_t id) const 6687{ 6688 sp<DeviceDescriptor> device; 6689 for (size_t i = 0; i < size(); i++) { 6690 ALOGV("DeviceVector::getDeviceFromId(%d) itemAt(%zu)->mId %d", id, i, itemAt(i)->mId); 6691 if (itemAt(i)->mId == id) { 6692 device = itemAt(i); 6693 break; 6694 } 6695 } 6696 return device; 6697} 6698 6699AudioPolicyManager::DeviceVector AudioPolicyManager::DeviceVector::getDevicesFromType( 6700 audio_devices_t type) const 6701{ 6702 DeviceVector devices; 6703 for (size_t i = 0; (i < size()) && (type != AUDIO_DEVICE_NONE); i++) { 6704 if (itemAt(i)->mDeviceType & type & ~AUDIO_DEVICE_BIT_IN) { 6705 devices.add(itemAt(i)); 6706 type &= ~itemAt(i)->mDeviceType; 6707 ALOGV("DeviceVector::getDevicesFromType() for type %x found %p", 6708 itemAt(i)->mDeviceType, itemAt(i).get()); 6709 } 6710 } 6711 return devices; 6712} 6713 6714AudioPolicyManager::DeviceVector AudioPolicyManager::DeviceVector::getDevicesFromTypeAddr( 6715 audio_devices_t type, String8 address) const 6716{ 6717 DeviceVector devices; 6718 //ALOGV(" looking for device=%x, addr=%s", type, address.string()); 6719 for (size_t i = 0; i < size(); i++) { 6720 //ALOGV(" at i=%d: device=%x, addr=%s", 6721 // i, itemAt(i)->mDeviceType, itemAt(i)->mAddress.string()); 6722 if (itemAt(i)->mDeviceType == type) { 6723 if (itemAt(i)->mAddress == address) { 6724 //ALOGV(" found matching address %s", address.string()); 6725 devices.add(itemAt(i)); 6726 } 6727 } 6728 } 6729 return devices; 6730} 6731 6732sp<AudioPolicyManager::DeviceDescriptor> AudioPolicyManager::DeviceVector::getDeviceFromName( 6733 const String8& name) const 6734{ 6735 sp<DeviceDescriptor> device; 6736 for (size_t i = 0; i < size(); i++) { 6737 if (itemAt(i)->mName == name) { 6738 device = itemAt(i); 6739 break; 6740 } 6741 } 6742 return device; 6743} 6744 6745void AudioPolicyManager::DeviceDescriptor::toAudioPortConfig( 6746 struct audio_port_config *dstConfig, 6747 const struct audio_port_config *srcConfig) const 6748{ 6749 dstConfig->config_mask = AUDIO_PORT_CONFIG_CHANNEL_MASK|AUDIO_PORT_CONFIG_GAIN; 6750 if (srcConfig != NULL) { 6751 dstConfig->config_mask |= srcConfig->config_mask; 6752 } 6753 6754 AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig); 6755 6756 dstConfig->id = mId; 6757 dstConfig->role = audio_is_output_device(mDeviceType) ? 6758 AUDIO_PORT_ROLE_SINK : AUDIO_PORT_ROLE_SOURCE; 6759 dstConfig->type = AUDIO_PORT_TYPE_DEVICE; 6760 dstConfig->ext.device.type = mDeviceType; 6761 dstConfig->ext.device.hw_module = mModule->mHandle; 6762 strncpy(dstConfig->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN); 6763} 6764 6765void AudioPolicyManager::DeviceDescriptor::toAudioPort(struct audio_port *port) const 6766{ 6767 ALOGV("DeviceDescriptor::toAudioPort() handle %d type %x", mId, mDeviceType); 6768 AudioPort::toAudioPort(port); 6769 port->id = mId; 6770 toAudioPortConfig(&port->active_config); 6771 port->ext.device.type = mDeviceType; 6772 port->ext.device.hw_module = mModule->mHandle; 6773 strncpy(port->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN); 6774} 6775 6776status_t AudioPolicyManager::DeviceDescriptor::dump(int fd, int spaces, int index) const 6777{ 6778 const size_t SIZE = 256; 6779 char buffer[SIZE]; 6780 String8 result; 6781 6782 snprintf(buffer, SIZE, "%*sDevice %d:\n", spaces, "", index+1); 6783 result.append(buffer); 6784 if (mId != 0) { 6785 snprintf(buffer, SIZE, "%*s- id: %2d\n", spaces, "", mId); 6786 result.append(buffer); 6787 } 6788 snprintf(buffer, SIZE, "%*s- type: %-48s\n", spaces, "", 6789 enumToString(sDeviceNameToEnumTable, 6790 ARRAY_SIZE(sDeviceNameToEnumTable), 6791 mDeviceType)); 6792 result.append(buffer); 6793 if (mAddress.size() != 0) { 6794 snprintf(buffer, SIZE, "%*s- address: %-32s\n", spaces, "", mAddress.string()); 6795 result.append(buffer); 6796 } 6797 write(fd, result.string(), result.size()); 6798 AudioPort::dump(fd, spaces); 6799 6800 return NO_ERROR; 6801} 6802 6803status_t AudioPolicyManager::AudioPatch::dump(int fd, int spaces, int index) const 6804{ 6805 const size_t SIZE = 256; 6806 char buffer[SIZE]; 6807 String8 result; 6808 6809 6810 snprintf(buffer, SIZE, "%*sAudio patch %d:\n", spaces, "", index+1); 6811 result.append(buffer); 6812 snprintf(buffer, SIZE, "%*s- handle: %2d\n", spaces, "", mHandle); 6813 result.append(buffer); 6814 snprintf(buffer, SIZE, "%*s- audio flinger handle: %2d\n", spaces, "", mAfPatchHandle); 6815 result.append(buffer); 6816 snprintf(buffer, SIZE, "%*s- owner uid: %2d\n", spaces, "", mUid); 6817 result.append(buffer); 6818 snprintf(buffer, SIZE, "%*s- %d sources:\n", spaces, "", mPatch.num_sources); 6819 result.append(buffer); 6820 for (size_t i = 0; i < mPatch.num_sources; i++) { 6821 if (mPatch.sources[i].type == AUDIO_PORT_TYPE_DEVICE) { 6822 snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "", 6823 mPatch.sources[i].id, enumToString(sDeviceNameToEnumTable, 6824 ARRAY_SIZE(sDeviceNameToEnumTable), 6825 mPatch.sources[i].ext.device.type)); 6826 } else { 6827 snprintf(buffer, SIZE, "%*s- Mix ID %d I/O handle %d\n", spaces + 2, "", 6828 mPatch.sources[i].id, mPatch.sources[i].ext.mix.handle); 6829 } 6830 result.append(buffer); 6831 } 6832 snprintf(buffer, SIZE, "%*s- %d sinks:\n", spaces, "", mPatch.num_sinks); 6833 result.append(buffer); 6834 for (size_t i = 0; i < mPatch.num_sinks; i++) { 6835 if (mPatch.sinks[i].type == AUDIO_PORT_TYPE_DEVICE) { 6836 snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "", 6837 mPatch.sinks[i].id, enumToString(sDeviceNameToEnumTable, 6838 ARRAY_SIZE(sDeviceNameToEnumTable), 6839 mPatch.sinks[i].ext.device.type)); 6840 } else { 6841 snprintf(buffer, SIZE, "%*s- Mix ID %d I/O handle %d\n", spaces + 2, "", 6842 mPatch.sinks[i].id, mPatch.sinks[i].ext.mix.handle); 6843 } 6844 result.append(buffer); 6845 } 6846 6847 write(fd, result.string(), result.size()); 6848 return NO_ERROR; 6849} 6850 6851// --- audio_policy.conf file parsing 6852 6853audio_output_flags_t AudioPolicyManager::parseFlagNames(char *name) 6854{ 6855 uint32_t flag = 0; 6856 6857 // it is OK to cast name to non const here as we are not going to use it after 6858 // strtok() modifies it 6859 char *flagName = strtok(name, "|"); 6860 while (flagName != NULL) { 6861 if (strlen(flagName) != 0) { 6862 flag |= stringToEnum(sFlagNameToEnumTable, 6863 ARRAY_SIZE(sFlagNameToEnumTable), 6864 flagName); 6865 } 6866 flagName = strtok(NULL, "|"); 6867 } 6868 //force direct flag if offload flag is set: offloading implies a direct output stream 6869 // and all common behaviors are driven by checking only the direct flag 6870 // this should normally be set appropriately in the policy configuration file 6871 if ((flag & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) { 6872 flag |= AUDIO_OUTPUT_FLAG_DIRECT; 6873 } 6874 6875 return (audio_output_flags_t)flag; 6876} 6877 6878audio_devices_t AudioPolicyManager::parseDeviceNames(char *name) 6879{ 6880 uint32_t device = 0; 6881 6882 char *devName = strtok(name, "|"); 6883 while (devName != NULL) { 6884 if (strlen(devName) != 0) { 6885 device |= stringToEnum(sDeviceNameToEnumTable, 6886 ARRAY_SIZE(sDeviceNameToEnumTable), 6887 devName); 6888 } 6889 devName = strtok(NULL, "|"); 6890 } 6891 return device; 6892} 6893 6894void AudioPolicyManager::loadHwModule(cnode *root) 6895{ 6896 status_t status = NAME_NOT_FOUND; 6897 cnode *node; 6898 sp<HwModule> module = new HwModule(root->name); 6899 6900 node = config_find(root, DEVICES_TAG); 6901 if (node != NULL) { 6902 node = node->first_child; 6903 while (node) { 6904 ALOGV("loadHwModule() loading device %s", node->name); 6905 status_t tmpStatus = module->loadDevice(node); 6906 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 6907 status = tmpStatus; 6908 } 6909 node = node->next; 6910 } 6911 } 6912 node = config_find(root, OUTPUTS_TAG); 6913 if (node != NULL) { 6914 node = node->first_child; 6915 while (node) { 6916 ALOGV("loadHwModule() loading output %s", node->name); 6917 status_t tmpStatus = module->loadOutput(node); 6918 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 6919 status = tmpStatus; 6920 } 6921 node = node->next; 6922 } 6923 } 6924 node = config_find(root, INPUTS_TAG); 6925 if (node != NULL) { 6926 node = node->first_child; 6927 while (node) { 6928 ALOGV("loadHwModule() loading input %s", node->name); 6929 status_t tmpStatus = module->loadInput(node); 6930 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 6931 status = tmpStatus; 6932 } 6933 node = node->next; 6934 } 6935 } 6936 loadGlobalConfig(root, module); 6937 6938 if (status == NO_ERROR) { 6939 mHwModules.add(module); 6940 } 6941} 6942 6943void AudioPolicyManager::loadHwModules(cnode *root) 6944{ 6945 cnode *node = config_find(root, AUDIO_HW_MODULE_TAG); 6946 if (node == NULL) { 6947 return; 6948 } 6949 6950 node = node->first_child; 6951 while (node) { 6952 ALOGV("loadHwModules() loading module %s", node->name); 6953 loadHwModule(node); 6954 node = node->next; 6955 } 6956} 6957 6958void AudioPolicyManager::loadGlobalConfig(cnode *root, const sp<HwModule>& module) 6959{ 6960 cnode *node = config_find(root, GLOBAL_CONFIG_TAG); 6961 6962 if (node == NULL) { 6963 return; 6964 } 6965 DeviceVector declaredDevices; 6966 if (module != NULL) { 6967 declaredDevices = module->mDeclaredDevices; 6968 } 6969 6970 node = node->first_child; 6971 while (node) { 6972 if (strcmp(ATTACHED_OUTPUT_DEVICES_TAG, node->name) == 0) { 6973 mAvailableOutputDevices.loadDevicesFromName((char *)node->value, 6974 declaredDevices); 6975 ALOGV("loadGlobalConfig() Attached Output Devices %08x", 6976 mAvailableOutputDevices.types()); 6977 } else if (strcmp(DEFAULT_OUTPUT_DEVICE_TAG, node->name) == 0) { 6978 audio_devices_t device = (audio_devices_t)stringToEnum(sDeviceNameToEnumTable, 6979 ARRAY_SIZE(sDeviceNameToEnumTable), 6980 (char *)node->value); 6981 if (device != AUDIO_DEVICE_NONE) { 6982 mDefaultOutputDevice = new DeviceDescriptor(String8(""), device); 6983 } else { 6984 ALOGW("loadGlobalConfig() default device not specified"); 6985 } 6986 ALOGV("loadGlobalConfig() mDefaultOutputDevice %08x", mDefaultOutputDevice->mDeviceType); 6987 } else if (strcmp(ATTACHED_INPUT_DEVICES_TAG, node->name) == 0) { 6988 mAvailableInputDevices.loadDevicesFromName((char *)node->value, 6989 declaredDevices); 6990 ALOGV("loadGlobalConfig() Available InputDevices %08x", mAvailableInputDevices.types()); 6991 } else if (strcmp(SPEAKER_DRC_ENABLED_TAG, node->name) == 0) { 6992 mSpeakerDrcEnabled = stringToBool((char *)node->value); 6993 ALOGV("loadGlobalConfig() mSpeakerDrcEnabled = %d", mSpeakerDrcEnabled); 6994 } else if (strcmp(AUDIO_HAL_VERSION_TAG, node->name) == 0) { 6995 uint32_t major, minor; 6996 sscanf((char *)node->value, "%u.%u", &major, &minor); 6997 module->mHalVersion = HARDWARE_DEVICE_API_VERSION(major, minor); 6998 ALOGV("loadGlobalConfig() mHalVersion = %04x major %u minor %u", 6999 module->mHalVersion, major, minor); 7000 } 7001 node = node->next; 7002 } 7003} 7004 7005status_t AudioPolicyManager::loadAudioPolicyConfig(const char *path) 7006{ 7007 cnode *root; 7008 char *data; 7009 7010 data = (char *)load_file(path, NULL); 7011 if (data == NULL) { 7012 return -ENODEV; 7013 } 7014 root = config_node("", ""); 7015 config_load(root, data); 7016 7017 loadHwModules(root); 7018 // legacy audio_policy.conf files have one global_configuration section 7019 loadGlobalConfig(root, getModuleFromName(AUDIO_HARDWARE_MODULE_ID_PRIMARY)); 7020 config_free(root); 7021 free(root); 7022 free(data); 7023 7024 ALOGI("loadAudioPolicyConfig() loaded %s\n", path); 7025 7026 return NO_ERROR; 7027} 7028 7029void AudioPolicyManager::defaultAudioPolicyConfig(void) 7030{ 7031 sp<HwModule> module; 7032 sp<IOProfile> profile; 7033 sp<DeviceDescriptor> defaultInputDevice = new DeviceDescriptor(String8(""), 7034 AUDIO_DEVICE_IN_BUILTIN_MIC); 7035 mAvailableOutputDevices.add(mDefaultOutputDevice); 7036 mAvailableInputDevices.add(defaultInputDevice); 7037 7038 module = new HwModule("primary"); 7039 7040 profile = new IOProfile(String8("primary"), AUDIO_PORT_ROLE_SOURCE, module); 7041 profile->mSamplingRates.add(44100); 7042 profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT); 7043 profile->mChannelMasks.add(AUDIO_CHANNEL_OUT_STEREO); 7044 profile->mSupportedDevices.add(mDefaultOutputDevice); 7045 profile->mFlags = AUDIO_OUTPUT_FLAG_PRIMARY; 7046 module->mOutputProfiles.add(profile); 7047 7048 profile = new IOProfile(String8("primary"), AUDIO_PORT_ROLE_SINK, module); 7049 profile->mSamplingRates.add(8000); 7050 profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT); 7051 profile->mChannelMasks.add(AUDIO_CHANNEL_IN_MONO); 7052 profile->mSupportedDevices.add(defaultInputDevice); 7053 module->mInputProfiles.add(profile); 7054 7055 mHwModules.add(module); 7056} 7057 7058audio_stream_type_t AudioPolicyManager::streamTypefromAttributesInt(const audio_attributes_t *attr) 7059{ 7060 // flags to stream type mapping 7061 if ((attr->flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) { 7062 return AUDIO_STREAM_ENFORCED_AUDIBLE; 7063 } 7064 if ((attr->flags & AUDIO_FLAG_SCO) == AUDIO_FLAG_SCO) { 7065 return AUDIO_STREAM_BLUETOOTH_SCO; 7066 } 7067 7068 // usage to stream type mapping 7069 switch (attr->usage) { 7070 case AUDIO_USAGE_MEDIA: 7071 case AUDIO_USAGE_GAME: 7072 case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY: 7073 case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: 7074 return AUDIO_STREAM_MUSIC; 7075 case AUDIO_USAGE_ASSISTANCE_SONIFICATION: 7076 return AUDIO_STREAM_SYSTEM; 7077 case AUDIO_USAGE_VOICE_COMMUNICATION: 7078 return AUDIO_STREAM_VOICE_CALL; 7079 7080 case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING: 7081 return AUDIO_STREAM_DTMF; 7082 7083 case AUDIO_USAGE_ALARM: 7084 return AUDIO_STREAM_ALARM; 7085 case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE: 7086 return AUDIO_STREAM_RING; 7087 7088 case AUDIO_USAGE_NOTIFICATION: 7089 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST: 7090 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT: 7091 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED: 7092 case AUDIO_USAGE_NOTIFICATION_EVENT: 7093 return AUDIO_STREAM_NOTIFICATION; 7094 7095 case AUDIO_USAGE_UNKNOWN: 7096 default: 7097 return AUDIO_STREAM_MUSIC; 7098 } 7099} 7100}; // namespace android 7101