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 "AudioPolicyService" 18 //#define LOG_NDEBUG 0 19 20 #include "Configuration.h" 21 #undef __STRICT_ANSI__ 22 #define __STDINT_LIMITS 23 #define __STDC_LIMIT_MACROS 24 #include <stdint.h> 25 26 #include <sys/time.h> 27 #include <binder/IServiceManager.h> 28 #include <utils/Log.h> 29 #include <cutils/properties.h> 30 #include <binder/IPCThreadState.h> 31 #include <utils/String16.h> 32 #include <utils/threads.h> 33 #include "AudioPolicyService.h" 34 #include "ServiceUtilities.h" 35 #include <hardware_legacy/power.h> 36 #include <media/AudioEffect.h> 37 #include <media/EffectsFactoryApi.h> 38 39 #include <hardware/hardware.h> 40 #include <system/audio.h> 41 #include <system/audio_policy.h> 42 #include <hardware/audio_policy.h> 43 #include <audio_effects/audio_effects_conf.h> 44 #include <media/AudioParameter.h> 45 46 namespace android { 47 48 static const char kDeadlockedString[] = "AudioPolicyService may be deadlocked\n"; 49 static const char kCmdDeadlockedString[] = "AudioPolicyService command thread may be deadlocked\n"; 50 51 static const int kDumpLockRetries = 50; 52 static const int kDumpLockSleepUs = 20000; 53 54 static const nsecs_t kAudioCommandTimeout = 3000000000LL; // 3 seconds 55 56 namespace { 57 extern struct audio_policy_service_ops aps_ops; 58 }; 59 60 // ---------------------------------------------------------------------------- 61 62 AudioPolicyService::AudioPolicyService() 63 : BnAudioPolicyService() , mpAudioPolicyDev(NULL) , mpAudioPolicy(NULL) 64 { 65 char value[PROPERTY_VALUE_MAX]; 66 const struct hw_module_t *module; 67 int forced_val; 68 int rc; 69 70 Mutex::Autolock _l(mLock); 71 72 // start tone playback thread 73 mTonePlaybackThread = new AudioCommandThread(String8("ApmTone"), this); 74 // start audio commands thread 75 mAudioCommandThread = new AudioCommandThread(String8("ApmAudio"), this); 76 // start output activity command thread 77 mOutputCommandThread = new AudioCommandThread(String8("ApmOutput"), this); 78 /* instantiate the audio policy manager */ 79 rc = hw_get_module(AUDIO_POLICY_HARDWARE_MODULE_ID, &module); 80 if (rc) 81 return; 82 83 rc = audio_policy_dev_open(module, &mpAudioPolicyDev); 84 ALOGE_IF(rc, "couldn't open audio policy device (%s)", strerror(-rc)); 85 if (rc) 86 return; 87 88 rc = mpAudioPolicyDev->create_audio_policy(mpAudioPolicyDev, &aps_ops, this, 89 &mpAudioPolicy); 90 ALOGE_IF(rc, "couldn't create audio policy (%s)", strerror(-rc)); 91 if (rc) 92 return; 93 94 rc = mpAudioPolicy->init_check(mpAudioPolicy); 95 ALOGE_IF(rc, "couldn't init_check the audio policy (%s)", strerror(-rc)); 96 if (rc) 97 return; 98 99 ALOGI("Loaded audio policy from %s (%s)", module->name, module->id); 100 101 // load audio pre processing modules 102 if (access(AUDIO_EFFECT_VENDOR_CONFIG_FILE, R_OK) == 0) { 103 loadPreProcessorConfig(AUDIO_EFFECT_VENDOR_CONFIG_FILE); 104 } else if (access(AUDIO_EFFECT_DEFAULT_CONFIG_FILE, R_OK) == 0) { 105 loadPreProcessorConfig(AUDIO_EFFECT_DEFAULT_CONFIG_FILE); 106 } 107 } 108 109 AudioPolicyService::~AudioPolicyService() 110 { 111 mTonePlaybackThread->exit(); 112 mTonePlaybackThread.clear(); 113 mAudioCommandThread->exit(); 114 mAudioCommandThread.clear(); 115 116 117 // release audio pre processing resources 118 for (size_t i = 0; i < mInputSources.size(); i++) { 119 delete mInputSources.valueAt(i); 120 } 121 mInputSources.clear(); 122 123 for (size_t i = 0; i < mInputs.size(); i++) { 124 mInputs.valueAt(i)->mEffects.clear(); 125 delete mInputs.valueAt(i); 126 } 127 mInputs.clear(); 128 129 if (mpAudioPolicy != NULL && mpAudioPolicyDev != NULL) 130 mpAudioPolicyDev->destroy_audio_policy(mpAudioPolicyDev, mpAudioPolicy); 131 if (mpAudioPolicyDev != NULL) 132 audio_policy_dev_close(mpAudioPolicyDev); 133 } 134 135 status_t AudioPolicyService::setDeviceConnectionState(audio_devices_t device, 136 audio_policy_dev_state_t state, 137 const char *device_address) 138 { 139 if (mpAudioPolicy == NULL) { 140 return NO_INIT; 141 } 142 if (!settingsAllowed()) { 143 return PERMISSION_DENIED; 144 } 145 if (!audio_is_output_device(device) && !audio_is_input_device(device)) { 146 return BAD_VALUE; 147 } 148 if (state != AUDIO_POLICY_DEVICE_STATE_AVAILABLE && 149 state != AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE) { 150 return BAD_VALUE; 151 } 152 153 ALOGV("setDeviceConnectionState()"); 154 Mutex::Autolock _l(mLock); 155 return mpAudioPolicy->set_device_connection_state(mpAudioPolicy, device, 156 state, device_address); 157 } 158 159 audio_policy_dev_state_t AudioPolicyService::getDeviceConnectionState( 160 audio_devices_t device, 161 const char *device_address) 162 { 163 if (mpAudioPolicy == NULL) { 164 return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 165 } 166 return mpAudioPolicy->get_device_connection_state(mpAudioPolicy, device, 167 device_address); 168 } 169 170 status_t AudioPolicyService::setPhoneState(audio_mode_t state) 171 { 172 if (mpAudioPolicy == NULL) { 173 return NO_INIT; 174 } 175 if (!settingsAllowed()) { 176 return PERMISSION_DENIED; 177 } 178 if (uint32_t(state) >= AUDIO_MODE_CNT) { 179 return BAD_VALUE; 180 } 181 182 ALOGV("setPhoneState()"); 183 184 // TODO: check if it is more appropriate to do it in platform specific policy manager 185 AudioSystem::setMode(state); 186 187 Mutex::Autolock _l(mLock); 188 mpAudioPolicy->set_phone_state(mpAudioPolicy, state); 189 return NO_ERROR; 190 } 191 192 status_t AudioPolicyService::setForceUse(audio_policy_force_use_t usage, 193 audio_policy_forced_cfg_t config) 194 { 195 if (mpAudioPolicy == NULL) { 196 return NO_INIT; 197 } 198 if (!settingsAllowed()) { 199 return PERMISSION_DENIED; 200 } 201 if (usage < 0 || usage >= AUDIO_POLICY_FORCE_USE_CNT) { 202 return BAD_VALUE; 203 } 204 if (config < 0 || config >= AUDIO_POLICY_FORCE_CFG_CNT) { 205 return BAD_VALUE; 206 } 207 ALOGV("setForceUse()"); 208 Mutex::Autolock _l(mLock); 209 mpAudioPolicy->set_force_use(mpAudioPolicy, usage, config); 210 return NO_ERROR; 211 } 212 213 audio_policy_forced_cfg_t AudioPolicyService::getForceUse(audio_policy_force_use_t usage) 214 { 215 if (mpAudioPolicy == NULL) { 216 return AUDIO_POLICY_FORCE_NONE; 217 } 218 if (usage < 0 || usage >= AUDIO_POLICY_FORCE_USE_CNT) { 219 return AUDIO_POLICY_FORCE_NONE; 220 } 221 return mpAudioPolicy->get_force_use(mpAudioPolicy, usage); 222 } 223 224 audio_io_handle_t AudioPolicyService::getOutput(audio_stream_type_t stream, 225 uint32_t samplingRate, 226 audio_format_t format, 227 audio_channel_mask_t channelMask, 228 audio_output_flags_t flags, 229 const audio_offload_info_t *offloadInfo) 230 { 231 if (mpAudioPolicy == NULL) { 232 return 0; 233 } 234 ALOGV("getOutput()"); 235 Mutex::Autolock _l(mLock); 236 return mpAudioPolicy->get_output(mpAudioPolicy, stream, samplingRate, 237 format, channelMask, flags, offloadInfo); 238 } 239 240 status_t AudioPolicyService::startOutput(audio_io_handle_t output, 241 audio_stream_type_t stream, 242 int session) 243 { 244 if (mpAudioPolicy == NULL) { 245 return NO_INIT; 246 } 247 ALOGV("startOutput()"); 248 Mutex::Autolock _l(mLock); 249 return mpAudioPolicy->start_output(mpAudioPolicy, output, stream, session); 250 } 251 252 status_t AudioPolicyService::stopOutput(audio_io_handle_t output, 253 audio_stream_type_t stream, 254 int session) 255 { 256 if (mpAudioPolicy == NULL) { 257 return NO_INIT; 258 } 259 ALOGV("stopOutput()"); 260 mOutputCommandThread->stopOutputCommand(output, stream, session); 261 return NO_ERROR; 262 } 263 264 status_t AudioPolicyService::doStopOutput(audio_io_handle_t output, 265 audio_stream_type_t stream, 266 int session) 267 { 268 ALOGV("doStopOutput from tid %d", gettid()); 269 Mutex::Autolock _l(mLock); 270 return mpAudioPolicy->stop_output(mpAudioPolicy, output, stream, session); 271 } 272 273 void AudioPolicyService::releaseOutput(audio_io_handle_t output) 274 { 275 if (mpAudioPolicy == NULL) { 276 return; 277 } 278 ALOGV("releaseOutput()"); 279 mOutputCommandThread->releaseOutputCommand(output); 280 } 281 282 void AudioPolicyService::doReleaseOutput(audio_io_handle_t output) 283 { 284 ALOGV("doReleaseOutput from tid %d", gettid()); 285 Mutex::Autolock _l(mLock); 286 mpAudioPolicy->release_output(mpAudioPolicy, output); 287 } 288 289 audio_io_handle_t AudioPolicyService::getInput(audio_source_t inputSource, 290 uint32_t samplingRate, 291 audio_format_t format, 292 audio_channel_mask_t channelMask, 293 int audioSession) 294 { 295 if (mpAudioPolicy == NULL) { 296 return 0; 297 } 298 // already checked by client, but double-check in case the client wrapper is bypassed 299 if (inputSource >= AUDIO_SOURCE_CNT && inputSource != AUDIO_SOURCE_HOTWORD) { 300 return 0; 301 } 302 303 if ((inputSource == AUDIO_SOURCE_HOTWORD) && !captureHotwordAllowed()) { 304 return 0; 305 } 306 307 Mutex::Autolock _l(mLock); 308 // the audio_in_acoustics_t parameter is ignored by get_input() 309 audio_io_handle_t input = mpAudioPolicy->get_input(mpAudioPolicy, inputSource, samplingRate, 310 format, channelMask, (audio_in_acoustics_t) 0); 311 312 if (input == 0) { 313 return input; 314 } 315 // create audio pre processors according to input source 316 audio_source_t aliasSource = (inputSource == AUDIO_SOURCE_HOTWORD) ? 317 AUDIO_SOURCE_VOICE_RECOGNITION : inputSource; 318 319 ssize_t index = mInputSources.indexOfKey(aliasSource); 320 if (index < 0) { 321 return input; 322 } 323 ssize_t idx = mInputs.indexOfKey(input); 324 InputDesc *inputDesc; 325 if (idx < 0) { 326 inputDesc = new InputDesc(audioSession); 327 mInputs.add(input, inputDesc); 328 } else { 329 inputDesc = mInputs.valueAt(idx); 330 } 331 332 Vector <EffectDesc *> effects = mInputSources.valueAt(index)->mEffects; 333 for (size_t i = 0; i < effects.size(); i++) { 334 EffectDesc *effect = effects[i]; 335 sp<AudioEffect> fx = new AudioEffect(NULL, &effect->mUuid, -1, 0, 0, audioSession, input); 336 status_t status = fx->initCheck(); 337 if (status != NO_ERROR && status != ALREADY_EXISTS) { 338 ALOGW("Failed to create Fx %s on input %d", effect->mName, input); 339 // fx goes out of scope and strong ref on AudioEffect is released 340 continue; 341 } 342 for (size_t j = 0; j < effect->mParams.size(); j++) { 343 fx->setParameter(effect->mParams[j]); 344 } 345 inputDesc->mEffects.add(fx); 346 } 347 setPreProcessorEnabled(inputDesc, true); 348 return input; 349 } 350 351 status_t AudioPolicyService::startInput(audio_io_handle_t input) 352 { 353 if (mpAudioPolicy == NULL) { 354 return NO_INIT; 355 } 356 Mutex::Autolock _l(mLock); 357 358 return mpAudioPolicy->start_input(mpAudioPolicy, input); 359 } 360 361 status_t AudioPolicyService::stopInput(audio_io_handle_t input) 362 { 363 if (mpAudioPolicy == NULL) { 364 return NO_INIT; 365 } 366 Mutex::Autolock _l(mLock); 367 368 return mpAudioPolicy->stop_input(mpAudioPolicy, input); 369 } 370 371 void AudioPolicyService::releaseInput(audio_io_handle_t input) 372 { 373 if (mpAudioPolicy == NULL) { 374 return; 375 } 376 Mutex::Autolock _l(mLock); 377 mpAudioPolicy->release_input(mpAudioPolicy, input); 378 379 ssize_t index = mInputs.indexOfKey(input); 380 if (index < 0) { 381 return; 382 } 383 InputDesc *inputDesc = mInputs.valueAt(index); 384 setPreProcessorEnabled(inputDesc, false); 385 delete inputDesc; 386 mInputs.removeItemsAt(index); 387 } 388 389 status_t AudioPolicyService::initStreamVolume(audio_stream_type_t stream, 390 int indexMin, 391 int indexMax) 392 { 393 if (mpAudioPolicy == NULL) { 394 return NO_INIT; 395 } 396 if (!settingsAllowed()) { 397 return PERMISSION_DENIED; 398 } 399 if (uint32_t(stream) >= AUDIO_STREAM_CNT) { 400 return BAD_VALUE; 401 } 402 Mutex::Autolock _l(mLock); 403 mpAudioPolicy->init_stream_volume(mpAudioPolicy, stream, indexMin, indexMax); 404 return NO_ERROR; 405 } 406 407 status_t AudioPolicyService::setStreamVolumeIndex(audio_stream_type_t stream, 408 int index, 409 audio_devices_t device) 410 { 411 if (mpAudioPolicy == NULL) { 412 return NO_INIT; 413 } 414 if (!settingsAllowed()) { 415 return PERMISSION_DENIED; 416 } 417 if (uint32_t(stream) >= AUDIO_STREAM_CNT) { 418 return BAD_VALUE; 419 } 420 Mutex::Autolock _l(mLock); 421 if (mpAudioPolicy->set_stream_volume_index_for_device) { 422 return mpAudioPolicy->set_stream_volume_index_for_device(mpAudioPolicy, 423 stream, 424 index, 425 device); 426 } else { 427 return mpAudioPolicy->set_stream_volume_index(mpAudioPolicy, stream, index); 428 } 429 } 430 431 status_t AudioPolicyService::getStreamVolumeIndex(audio_stream_type_t stream, 432 int *index, 433 audio_devices_t device) 434 { 435 if (mpAudioPolicy == NULL) { 436 return NO_INIT; 437 } 438 if (uint32_t(stream) >= AUDIO_STREAM_CNT) { 439 return BAD_VALUE; 440 } 441 Mutex::Autolock _l(mLock); 442 if (mpAudioPolicy->get_stream_volume_index_for_device) { 443 return mpAudioPolicy->get_stream_volume_index_for_device(mpAudioPolicy, 444 stream, 445 index, 446 device); 447 } else { 448 return mpAudioPolicy->get_stream_volume_index(mpAudioPolicy, stream, index); 449 } 450 } 451 452 uint32_t AudioPolicyService::getStrategyForStream(audio_stream_type_t stream) 453 { 454 if (mpAudioPolicy == NULL) { 455 return 0; 456 } 457 return mpAudioPolicy->get_strategy_for_stream(mpAudioPolicy, stream); 458 } 459 460 //audio policy: use audio_device_t appropriately 461 462 audio_devices_t AudioPolicyService::getDevicesForStream(audio_stream_type_t stream) 463 { 464 if (mpAudioPolicy == NULL) { 465 return (audio_devices_t)0; 466 } 467 return mpAudioPolicy->get_devices_for_stream(mpAudioPolicy, stream); 468 } 469 470 audio_io_handle_t AudioPolicyService::getOutputForEffect(const effect_descriptor_t *desc) 471 { 472 if (mpAudioPolicy == NULL) { 473 return NO_INIT; 474 } 475 Mutex::Autolock _l(mLock); 476 return mpAudioPolicy->get_output_for_effect(mpAudioPolicy, desc); 477 } 478 479 status_t AudioPolicyService::registerEffect(const effect_descriptor_t *desc, 480 audio_io_handle_t io, 481 uint32_t strategy, 482 int session, 483 int id) 484 { 485 if (mpAudioPolicy == NULL) { 486 return NO_INIT; 487 } 488 return mpAudioPolicy->register_effect(mpAudioPolicy, desc, io, strategy, session, id); 489 } 490 491 status_t AudioPolicyService::unregisterEffect(int id) 492 { 493 if (mpAudioPolicy == NULL) { 494 return NO_INIT; 495 } 496 return mpAudioPolicy->unregister_effect(mpAudioPolicy, id); 497 } 498 499 status_t AudioPolicyService::setEffectEnabled(int id, bool enabled) 500 { 501 if (mpAudioPolicy == NULL) { 502 return NO_INIT; 503 } 504 return mpAudioPolicy->set_effect_enabled(mpAudioPolicy, id, enabled); 505 } 506 507 bool AudioPolicyService::isStreamActive(audio_stream_type_t stream, uint32_t inPastMs) const 508 { 509 if (mpAudioPolicy == NULL) { 510 return 0; 511 } 512 Mutex::Autolock _l(mLock); 513 return mpAudioPolicy->is_stream_active(mpAudioPolicy, stream, inPastMs); 514 } 515 516 bool AudioPolicyService::isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs) const 517 { 518 if (mpAudioPolicy == NULL) { 519 return 0; 520 } 521 Mutex::Autolock _l(mLock); 522 return mpAudioPolicy->is_stream_active_remotely(mpAudioPolicy, stream, inPastMs); 523 } 524 525 bool AudioPolicyService::isSourceActive(audio_source_t source) const 526 { 527 if (mpAudioPolicy == NULL) { 528 return false; 529 } 530 if (mpAudioPolicy->is_source_active == 0) { 531 return false; 532 } 533 Mutex::Autolock _l(mLock); 534 return mpAudioPolicy->is_source_active(mpAudioPolicy, source); 535 } 536 537 status_t AudioPolicyService::queryDefaultPreProcessing(int audioSession, 538 effect_descriptor_t *descriptors, 539 uint32_t *count) 540 { 541 542 if (mpAudioPolicy == NULL) { 543 *count = 0; 544 return NO_INIT; 545 } 546 Mutex::Autolock _l(mLock); 547 status_t status = NO_ERROR; 548 549 size_t index; 550 for (index = 0; index < mInputs.size(); index++) { 551 if (mInputs.valueAt(index)->mSessionId == audioSession) { 552 break; 553 } 554 } 555 if (index == mInputs.size()) { 556 *count = 0; 557 return BAD_VALUE; 558 } 559 Vector< sp<AudioEffect> > effects = mInputs.valueAt(index)->mEffects; 560 561 for (size_t i = 0; i < effects.size(); i++) { 562 effect_descriptor_t desc = effects[i]->descriptor(); 563 if (i < *count) { 564 descriptors[i] = desc; 565 } 566 } 567 if (effects.size() > *count) { 568 status = NO_MEMORY; 569 } 570 *count = effects.size(); 571 return status; 572 } 573 574 void AudioPolicyService::binderDied(const wp<IBinder>& who) { 575 ALOGW("binderDied() %p, calling pid %d", who.unsafe_get(), 576 IPCThreadState::self()->getCallingPid()); 577 } 578 579 static bool tryLock(Mutex& mutex) 580 { 581 bool locked = false; 582 for (int i = 0; i < kDumpLockRetries; ++i) { 583 if (mutex.tryLock() == NO_ERROR) { 584 locked = true; 585 break; 586 } 587 usleep(kDumpLockSleepUs); 588 } 589 return locked; 590 } 591 592 status_t AudioPolicyService::dumpInternals(int fd) 593 { 594 const size_t SIZE = 256; 595 char buffer[SIZE]; 596 String8 result; 597 598 snprintf(buffer, SIZE, "PolicyManager Interface: %p\n", mpAudioPolicy); 599 result.append(buffer); 600 snprintf(buffer, SIZE, "Command Thread: %p\n", mAudioCommandThread.get()); 601 result.append(buffer); 602 snprintf(buffer, SIZE, "Tones Thread: %p\n", mTonePlaybackThread.get()); 603 result.append(buffer); 604 605 write(fd, result.string(), result.size()); 606 return NO_ERROR; 607 } 608 609 status_t AudioPolicyService::dump(int fd, const Vector<String16>& args) 610 { 611 if (!dumpAllowed()) { 612 dumpPermissionDenial(fd); 613 } else { 614 bool locked = tryLock(mLock); 615 if (!locked) { 616 String8 result(kDeadlockedString); 617 write(fd, result.string(), result.size()); 618 } 619 620 dumpInternals(fd); 621 if (mAudioCommandThread != 0) { 622 mAudioCommandThread->dump(fd); 623 } 624 if (mTonePlaybackThread != 0) { 625 mTonePlaybackThread->dump(fd); 626 } 627 628 if (mpAudioPolicy) { 629 mpAudioPolicy->dump(mpAudioPolicy, fd); 630 } 631 632 if (locked) mLock.unlock(); 633 } 634 return NO_ERROR; 635 } 636 637 status_t AudioPolicyService::dumpPermissionDenial(int fd) 638 { 639 const size_t SIZE = 256; 640 char buffer[SIZE]; 641 String8 result; 642 snprintf(buffer, SIZE, "Permission Denial: " 643 "can't dump AudioPolicyService from pid=%d, uid=%d\n", 644 IPCThreadState::self()->getCallingPid(), 645 IPCThreadState::self()->getCallingUid()); 646 result.append(buffer); 647 write(fd, result.string(), result.size()); 648 return NO_ERROR; 649 } 650 651 void AudioPolicyService::setPreProcessorEnabled(const InputDesc *inputDesc, bool enabled) 652 { 653 const Vector<sp<AudioEffect> > &fxVector = inputDesc->mEffects; 654 for (size_t i = 0; i < fxVector.size(); i++) { 655 fxVector.itemAt(i)->setEnabled(enabled); 656 } 657 } 658 659 status_t AudioPolicyService::onTransact( 660 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 661 { 662 return BnAudioPolicyService::onTransact(code, data, reply, flags); 663 } 664 665 666 // ----------- AudioPolicyService::AudioCommandThread implementation ---------- 667 668 AudioPolicyService::AudioCommandThread::AudioCommandThread(String8 name, 669 const wp<AudioPolicyService>& service) 670 : Thread(false), mName(name), mService(service) 671 { 672 mpToneGenerator = NULL; 673 } 674 675 676 AudioPolicyService::AudioCommandThread::~AudioCommandThread() 677 { 678 if (!mAudioCommands.isEmpty()) { 679 release_wake_lock(mName.string()); 680 } 681 mAudioCommands.clear(); 682 delete mpToneGenerator; 683 } 684 685 void AudioPolicyService::AudioCommandThread::onFirstRef() 686 { 687 run(mName.string(), ANDROID_PRIORITY_AUDIO); 688 } 689 690 bool AudioPolicyService::AudioCommandThread::threadLoop() 691 { 692 nsecs_t waitTime = INT64_MAX; 693 694 mLock.lock(); 695 while (!exitPending()) 696 { 697 while (!mAudioCommands.isEmpty()) { 698 nsecs_t curTime = systemTime(); 699 // commands are sorted by increasing time stamp: execute them from index 0 and up 700 if (mAudioCommands[0]->mTime <= curTime) { 701 AudioCommand *command = mAudioCommands[0]; 702 mAudioCommands.removeAt(0); 703 mLastCommand = *command; 704 705 switch (command->mCommand) { 706 case START_TONE: { 707 mLock.unlock(); 708 ToneData *data = (ToneData *)command->mParam; 709 ALOGV("AudioCommandThread() processing start tone %d on stream %d", 710 data->mType, data->mStream); 711 delete mpToneGenerator; 712 mpToneGenerator = new ToneGenerator(data->mStream, 1.0); 713 mpToneGenerator->startTone(data->mType); 714 delete data; 715 mLock.lock(); 716 }break; 717 case STOP_TONE: { 718 mLock.unlock(); 719 ALOGV("AudioCommandThread() processing stop tone"); 720 if (mpToneGenerator != NULL) { 721 mpToneGenerator->stopTone(); 722 delete mpToneGenerator; 723 mpToneGenerator = NULL; 724 } 725 mLock.lock(); 726 }break; 727 case SET_VOLUME: { 728 VolumeData *data = (VolumeData *)command->mParam; 729 ALOGV("AudioCommandThread() processing set volume stream %d, \ 730 volume %f, output %d", data->mStream, data->mVolume, data->mIO); 731 command->mStatus = AudioSystem::setStreamVolume(data->mStream, 732 data->mVolume, 733 data->mIO); 734 if (command->mWaitStatus) { 735 command->mCond.signal(); 736 command->mCond.waitRelative(mLock, kAudioCommandTimeout); 737 } 738 delete data; 739 }break; 740 case SET_PARAMETERS: { 741 ParametersData *data = (ParametersData *)command->mParam; 742 ALOGV("AudioCommandThread() processing set parameters string %s, io %d", 743 data->mKeyValuePairs.string(), data->mIO); 744 command->mStatus = AudioSystem::setParameters(data->mIO, data->mKeyValuePairs); 745 if (command->mWaitStatus) { 746 command->mCond.signal(); 747 command->mCond.waitRelative(mLock, kAudioCommandTimeout); 748 } 749 delete data; 750 }break; 751 case SET_VOICE_VOLUME: { 752 VoiceVolumeData *data = (VoiceVolumeData *)command->mParam; 753 ALOGV("AudioCommandThread() processing set voice volume volume %f", 754 data->mVolume); 755 command->mStatus = AudioSystem::setVoiceVolume(data->mVolume); 756 if (command->mWaitStatus) { 757 command->mCond.signal(); 758 command->mCond.waitRelative(mLock, kAudioCommandTimeout); 759 } 760 delete data; 761 }break; 762 case STOP_OUTPUT: { 763 StopOutputData *data = (StopOutputData *)command->mParam; 764 ALOGV("AudioCommandThread() processing stop output %d", 765 data->mIO); 766 sp<AudioPolicyService> svc = mService.promote(); 767 if (svc == 0) { 768 break; 769 } 770 mLock.unlock(); 771 svc->doStopOutput(data->mIO, data->mStream, data->mSession); 772 mLock.lock(); 773 delete data; 774 }break; 775 case RELEASE_OUTPUT: { 776 ReleaseOutputData *data = (ReleaseOutputData *)command->mParam; 777 ALOGV("AudioCommandThread() processing release output %d", 778 data->mIO); 779 sp<AudioPolicyService> svc = mService.promote(); 780 if (svc == 0) { 781 break; 782 } 783 mLock.unlock(); 784 svc->doReleaseOutput(data->mIO); 785 mLock.lock(); 786 delete data; 787 }break; 788 default: 789 ALOGW("AudioCommandThread() unknown command %d", command->mCommand); 790 } 791 delete command; 792 waitTime = INT64_MAX; 793 } else { 794 waitTime = mAudioCommands[0]->mTime - curTime; 795 break; 796 } 797 } 798 // release delayed commands wake lock 799 if (mAudioCommands.isEmpty()) { 800 release_wake_lock(mName.string()); 801 } 802 ALOGV("AudioCommandThread() going to sleep"); 803 mWaitWorkCV.waitRelative(mLock, waitTime); 804 ALOGV("AudioCommandThread() waking up"); 805 } 806 mLock.unlock(); 807 return false; 808 } 809 810 status_t AudioPolicyService::AudioCommandThread::dump(int fd) 811 { 812 const size_t SIZE = 256; 813 char buffer[SIZE]; 814 String8 result; 815 816 snprintf(buffer, SIZE, "AudioCommandThread %p Dump\n", this); 817 result.append(buffer); 818 write(fd, result.string(), result.size()); 819 820 bool locked = tryLock(mLock); 821 if (!locked) { 822 String8 result2(kCmdDeadlockedString); 823 write(fd, result2.string(), result2.size()); 824 } 825 826 snprintf(buffer, SIZE, "- Commands:\n"); 827 result = String8(buffer); 828 result.append(" Command Time Wait pParam\n"); 829 for (size_t i = 0; i < mAudioCommands.size(); i++) { 830 mAudioCommands[i]->dump(buffer, SIZE); 831 result.append(buffer); 832 } 833 result.append(" Last Command\n"); 834 mLastCommand.dump(buffer, SIZE); 835 result.append(buffer); 836 837 write(fd, result.string(), result.size()); 838 839 if (locked) mLock.unlock(); 840 841 return NO_ERROR; 842 } 843 844 void AudioPolicyService::AudioCommandThread::startToneCommand(ToneGenerator::tone_type type, 845 audio_stream_type_t stream) 846 { 847 AudioCommand *command = new AudioCommand(); 848 command->mCommand = START_TONE; 849 ToneData *data = new ToneData(); 850 data->mType = type; 851 data->mStream = stream; 852 command->mParam = (void *)data; 853 Mutex::Autolock _l(mLock); 854 insertCommand_l(command); 855 ALOGV("AudioCommandThread() adding tone start type %d, stream %d", type, stream); 856 mWaitWorkCV.signal(); 857 } 858 859 void AudioPolicyService::AudioCommandThread::stopToneCommand() 860 { 861 AudioCommand *command = new AudioCommand(); 862 command->mCommand = STOP_TONE; 863 command->mParam = NULL; 864 Mutex::Autolock _l(mLock); 865 insertCommand_l(command); 866 ALOGV("AudioCommandThread() adding tone stop"); 867 mWaitWorkCV.signal(); 868 } 869 870 status_t AudioPolicyService::AudioCommandThread::volumeCommand(audio_stream_type_t stream, 871 float volume, 872 audio_io_handle_t output, 873 int delayMs) 874 { 875 status_t status = NO_ERROR; 876 877 AudioCommand *command = new AudioCommand(); 878 command->mCommand = SET_VOLUME; 879 VolumeData *data = new VolumeData(); 880 data->mStream = stream; 881 data->mVolume = volume; 882 data->mIO = output; 883 command->mParam = data; 884 Mutex::Autolock _l(mLock); 885 insertCommand_l(command, delayMs); 886 ALOGV("AudioCommandThread() adding set volume stream %d, volume %f, output %d", 887 stream, volume, output); 888 mWaitWorkCV.signal(); 889 if (command->mWaitStatus) { 890 command->mCond.wait(mLock); 891 status = command->mStatus; 892 command->mCond.signal(); 893 } 894 return status; 895 } 896 897 status_t AudioPolicyService::AudioCommandThread::parametersCommand(audio_io_handle_t ioHandle, 898 const char *keyValuePairs, 899 int delayMs) 900 { 901 status_t status = NO_ERROR; 902 903 AudioCommand *command = new AudioCommand(); 904 command->mCommand = SET_PARAMETERS; 905 ParametersData *data = new ParametersData(); 906 data->mIO = ioHandle; 907 data->mKeyValuePairs = String8(keyValuePairs); 908 command->mParam = data; 909 Mutex::Autolock _l(mLock); 910 insertCommand_l(command, delayMs); 911 ALOGV("AudioCommandThread() adding set parameter string %s, io %d ,delay %d", 912 keyValuePairs, ioHandle, delayMs); 913 mWaitWorkCV.signal(); 914 if (command->mWaitStatus) { 915 command->mCond.wait(mLock); 916 status = command->mStatus; 917 command->mCond.signal(); 918 } 919 return status; 920 } 921 922 status_t AudioPolicyService::AudioCommandThread::voiceVolumeCommand(float volume, int delayMs) 923 { 924 status_t status = NO_ERROR; 925 926 AudioCommand *command = new AudioCommand(); 927 command->mCommand = SET_VOICE_VOLUME; 928 VoiceVolumeData *data = new VoiceVolumeData(); 929 data->mVolume = volume; 930 command->mParam = data; 931 Mutex::Autolock _l(mLock); 932 insertCommand_l(command, delayMs); 933 ALOGV("AudioCommandThread() adding set voice volume volume %f", volume); 934 mWaitWorkCV.signal(); 935 if (command->mWaitStatus) { 936 command->mCond.wait(mLock); 937 status = command->mStatus; 938 command->mCond.signal(); 939 } 940 return status; 941 } 942 943 void AudioPolicyService::AudioCommandThread::stopOutputCommand(audio_io_handle_t output, 944 audio_stream_type_t stream, 945 int session) 946 { 947 AudioCommand *command = new AudioCommand(); 948 command->mCommand = STOP_OUTPUT; 949 StopOutputData *data = new StopOutputData(); 950 data->mIO = output; 951 data->mStream = stream; 952 data->mSession = session; 953 command->mParam = (void *)data; 954 Mutex::Autolock _l(mLock); 955 insertCommand_l(command); 956 ALOGV("AudioCommandThread() adding stop output %d", output); 957 mWaitWorkCV.signal(); 958 } 959 960 void AudioPolicyService::AudioCommandThread::releaseOutputCommand(audio_io_handle_t output) 961 { 962 AudioCommand *command = new AudioCommand(); 963 command->mCommand = RELEASE_OUTPUT; 964 ReleaseOutputData *data = new ReleaseOutputData(); 965 data->mIO = output; 966 command->mParam = (void *)data; 967 Mutex::Autolock _l(mLock); 968 insertCommand_l(command); 969 ALOGV("AudioCommandThread() adding release output %d", output); 970 mWaitWorkCV.signal(); 971 } 972 973 // insertCommand_l() must be called with mLock held 974 void AudioPolicyService::AudioCommandThread::insertCommand_l(AudioCommand *command, int delayMs) 975 { 976 ssize_t i; // not size_t because i will count down to -1 977 Vector <AudioCommand *> removedCommands; 978 command->mTime = systemTime() + milliseconds(delayMs); 979 980 // acquire wake lock to make sure delayed commands are processed 981 if (mAudioCommands.isEmpty()) { 982 acquire_wake_lock(PARTIAL_WAKE_LOCK, mName.string()); 983 } 984 985 // check same pending commands with later time stamps and eliminate them 986 for (i = mAudioCommands.size()-1; i >= 0; i--) { 987 AudioCommand *command2 = mAudioCommands[i]; 988 // commands are sorted by increasing time stamp: no need to scan the rest of mAudioCommands 989 if (command2->mTime <= command->mTime) break; 990 if (command2->mCommand != command->mCommand) continue; 991 992 switch (command->mCommand) { 993 case SET_PARAMETERS: { 994 ParametersData *data = (ParametersData *)command->mParam; 995 ParametersData *data2 = (ParametersData *)command2->mParam; 996 if (data->mIO != data2->mIO) break; 997 ALOGV("Comparing parameter command %s to new command %s", 998 data2->mKeyValuePairs.string(), data->mKeyValuePairs.string()); 999 AudioParameter param = AudioParameter(data->mKeyValuePairs); 1000 AudioParameter param2 = AudioParameter(data2->mKeyValuePairs); 1001 for (size_t j = 0; j < param.size(); j++) { 1002 String8 key; 1003 String8 value; 1004 param.getAt(j, key, value); 1005 for (size_t k = 0; k < param2.size(); k++) { 1006 String8 key2; 1007 String8 value2; 1008 param2.getAt(k, key2, value2); 1009 if (key2 == key) { 1010 param2.remove(key2); 1011 ALOGV("Filtering out parameter %s", key2.string()); 1012 break; 1013 } 1014 } 1015 } 1016 // if all keys have been filtered out, remove the command. 1017 // otherwise, update the key value pairs 1018 if (param2.size() == 0) { 1019 removedCommands.add(command2); 1020 } else { 1021 data2->mKeyValuePairs = param2.toString(); 1022 } 1023 command->mTime = command2->mTime; 1024 // force delayMs to non 0 so that code below does not request to wait for 1025 // command status as the command is now delayed 1026 delayMs = 1; 1027 } break; 1028 1029 case SET_VOLUME: { 1030 VolumeData *data = (VolumeData *)command->mParam; 1031 VolumeData *data2 = (VolumeData *)command2->mParam; 1032 if (data->mIO != data2->mIO) break; 1033 if (data->mStream != data2->mStream) break; 1034 ALOGV("Filtering out volume command on output %d for stream %d", 1035 data->mIO, data->mStream); 1036 removedCommands.add(command2); 1037 command->mTime = command2->mTime; 1038 // force delayMs to non 0 so that code below does not request to wait for 1039 // command status as the command is now delayed 1040 delayMs = 1; 1041 } break; 1042 case START_TONE: 1043 case STOP_TONE: 1044 default: 1045 break; 1046 } 1047 } 1048 1049 // remove filtered commands 1050 for (size_t j = 0; j < removedCommands.size(); j++) { 1051 // removed commands always have time stamps greater than current command 1052 for (size_t k = i + 1; k < mAudioCommands.size(); k++) { 1053 if (mAudioCommands[k] == removedCommands[j]) { 1054 ALOGV("suppressing command: %d", mAudioCommands[k]->mCommand); 1055 mAudioCommands.removeAt(k); 1056 break; 1057 } 1058 } 1059 } 1060 removedCommands.clear(); 1061 1062 // wait for status only if delay is 0 1063 if (delayMs == 0) { 1064 command->mWaitStatus = true; 1065 } else { 1066 command->mWaitStatus = false; 1067 } 1068 1069 // insert command at the right place according to its time stamp 1070 ALOGV("inserting command: %d at index %d, num commands %d", 1071 command->mCommand, (int)i+1, mAudioCommands.size()); 1072 mAudioCommands.insertAt(command, i + 1); 1073 } 1074 1075 void AudioPolicyService::AudioCommandThread::exit() 1076 { 1077 ALOGV("AudioCommandThread::exit"); 1078 { 1079 AutoMutex _l(mLock); 1080 requestExit(); 1081 mWaitWorkCV.signal(); 1082 } 1083 requestExitAndWait(); 1084 } 1085 1086 void AudioPolicyService::AudioCommandThread::AudioCommand::dump(char* buffer, size_t size) 1087 { 1088 snprintf(buffer, size, " %02d %06d.%03d %01u %p\n", 1089 mCommand, 1090 (int)ns2s(mTime), 1091 (int)ns2ms(mTime)%1000, 1092 mWaitStatus, 1093 mParam); 1094 } 1095 1096 /******* helpers for the service_ops callbacks defined below *********/ 1097 void AudioPolicyService::setParameters(audio_io_handle_t ioHandle, 1098 const char *keyValuePairs, 1099 int delayMs) 1100 { 1101 mAudioCommandThread->parametersCommand(ioHandle, keyValuePairs, 1102 delayMs); 1103 } 1104 1105 int AudioPolicyService::setStreamVolume(audio_stream_type_t stream, 1106 float volume, 1107 audio_io_handle_t output, 1108 int delayMs) 1109 { 1110 return (int)mAudioCommandThread->volumeCommand(stream, volume, 1111 output, delayMs); 1112 } 1113 1114 int AudioPolicyService::startTone(audio_policy_tone_t tone, 1115 audio_stream_type_t stream) 1116 { 1117 if (tone != AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION) 1118 ALOGE("startTone: illegal tone requested (%d)", tone); 1119 if (stream != AUDIO_STREAM_VOICE_CALL) 1120 ALOGE("startTone: illegal stream (%d) requested for tone %d", stream, 1121 tone); 1122 mTonePlaybackThread->startToneCommand(ToneGenerator::TONE_SUP_CALL_WAITING, 1123 AUDIO_STREAM_VOICE_CALL); 1124 return 0; 1125 } 1126 1127 int AudioPolicyService::stopTone() 1128 { 1129 mTonePlaybackThread->stopToneCommand(); 1130 return 0; 1131 } 1132 1133 int AudioPolicyService::setVoiceVolume(float volume, int delayMs) 1134 { 1135 return (int)mAudioCommandThread->voiceVolumeCommand(volume, delayMs); 1136 } 1137 1138 bool AudioPolicyService::isOffloadSupported(const audio_offload_info_t& info) 1139 { 1140 if (mpAudioPolicy == NULL) { 1141 ALOGV("mpAudioPolicy == NULL"); 1142 return false; 1143 } 1144 1145 if (mpAudioPolicy->is_offload_supported == NULL) { 1146 ALOGV("HAL does not implement is_offload_supported"); 1147 return false; 1148 } 1149 1150 return mpAudioPolicy->is_offload_supported(mpAudioPolicy, &info); 1151 } 1152 1153 // ---------------------------------------------------------------------------- 1154 // Audio pre-processing configuration 1155 // ---------------------------------------------------------------------------- 1156 1157 /*static*/ const char * const AudioPolicyService::kInputSourceNames[AUDIO_SOURCE_CNT -1] = { 1158 MIC_SRC_TAG, 1159 VOICE_UL_SRC_TAG, 1160 VOICE_DL_SRC_TAG, 1161 VOICE_CALL_SRC_TAG, 1162 CAMCORDER_SRC_TAG, 1163 VOICE_REC_SRC_TAG, 1164 VOICE_COMM_SRC_TAG 1165 }; 1166 1167 // returns the audio_source_t enum corresponding to the input source name or 1168 // AUDIO_SOURCE_CNT is no match found 1169 audio_source_t AudioPolicyService::inputSourceNameToEnum(const char *name) 1170 { 1171 int i; 1172 for (i = AUDIO_SOURCE_MIC; i < AUDIO_SOURCE_CNT; i++) { 1173 if (strcmp(name, kInputSourceNames[i - AUDIO_SOURCE_MIC]) == 0) { 1174 ALOGV("inputSourceNameToEnum found source %s %d", name, i); 1175 break; 1176 } 1177 } 1178 return (audio_source_t)i; 1179 } 1180 1181 size_t AudioPolicyService::growParamSize(char *param, 1182 size_t size, 1183 size_t *curSize, 1184 size_t *totSize) 1185 { 1186 // *curSize is at least sizeof(effect_param_t) + 2 * sizeof(int) 1187 size_t pos = ((*curSize - 1 ) / size + 1) * size; 1188 1189 if (pos + size > *totSize) { 1190 while (pos + size > *totSize) { 1191 *totSize += ((*totSize + 7) / 8) * 4; 1192 } 1193 param = (char *)realloc(param, *totSize); 1194 } 1195 *curSize = pos + size; 1196 return pos; 1197 } 1198 1199 size_t AudioPolicyService::readParamValue(cnode *node, 1200 char *param, 1201 size_t *curSize, 1202 size_t *totSize) 1203 { 1204 if (strncmp(node->name, SHORT_TAG, sizeof(SHORT_TAG) + 1) == 0) { 1205 size_t pos = growParamSize(param, sizeof(short), curSize, totSize); 1206 *(short *)((char *)param + pos) = (short)atoi(node->value); 1207 ALOGV("readParamValue() reading short %d", *(short *)((char *)param + pos)); 1208 return sizeof(short); 1209 } else if (strncmp(node->name, INT_TAG, sizeof(INT_TAG) + 1) == 0) { 1210 size_t pos = growParamSize(param, sizeof(int), curSize, totSize); 1211 *(int *)((char *)param + pos) = atoi(node->value); 1212 ALOGV("readParamValue() reading int %d", *(int *)((char *)param + pos)); 1213 return sizeof(int); 1214 } else if (strncmp(node->name, FLOAT_TAG, sizeof(FLOAT_TAG) + 1) == 0) { 1215 size_t pos = growParamSize(param, sizeof(float), curSize, totSize); 1216 *(float *)((char *)param + pos) = (float)atof(node->value); 1217 ALOGV("readParamValue() reading float %f",*(float *)((char *)param + pos)); 1218 return sizeof(float); 1219 } else if (strncmp(node->name, BOOL_TAG, sizeof(BOOL_TAG) + 1) == 0) { 1220 size_t pos = growParamSize(param, sizeof(bool), curSize, totSize); 1221 if (strncmp(node->value, "false", strlen("false") + 1) == 0) { 1222 *(bool *)((char *)param + pos) = false; 1223 } else { 1224 *(bool *)((char *)param + pos) = true; 1225 } 1226 ALOGV("readParamValue() reading bool %s",*(bool *)((char *)param + pos) ? "true" : "false"); 1227 return sizeof(bool); 1228 } else if (strncmp(node->name, STRING_TAG, sizeof(STRING_TAG) + 1) == 0) { 1229 size_t len = strnlen(node->value, EFFECT_STRING_LEN_MAX); 1230 if (*curSize + len + 1 > *totSize) { 1231 *totSize = *curSize + len + 1; 1232 param = (char *)realloc(param, *totSize); 1233 } 1234 strncpy(param + *curSize, node->value, len); 1235 *curSize += len; 1236 param[*curSize] = '\0'; 1237 ALOGV("readParamValue() reading string %s", param + *curSize - len); 1238 return len; 1239 } 1240 ALOGW("readParamValue() unknown param type %s", node->name); 1241 return 0; 1242 } 1243 1244 effect_param_t *AudioPolicyService::loadEffectParameter(cnode *root) 1245 { 1246 cnode *param; 1247 cnode *value; 1248 size_t curSize = sizeof(effect_param_t); 1249 size_t totSize = sizeof(effect_param_t) + 2 * sizeof(int); 1250 effect_param_t *fx_param = (effect_param_t *)malloc(totSize); 1251 1252 param = config_find(root, PARAM_TAG); 1253 value = config_find(root, VALUE_TAG); 1254 if (param == NULL && value == NULL) { 1255 // try to parse simple parameter form {int int} 1256 param = root->first_child; 1257 if (param != NULL) { 1258 // Note: that a pair of random strings is read as 0 0 1259 int *ptr = (int *)fx_param->data; 1260 int *ptr2 = (int *)((char *)param + sizeof(effect_param_t)); 1261 ALOGW("loadEffectParameter() ptr %p ptr2 %p", ptr, ptr2); 1262 *ptr++ = atoi(param->name); 1263 *ptr = atoi(param->value); 1264 fx_param->psize = sizeof(int); 1265 fx_param->vsize = sizeof(int); 1266 return fx_param; 1267 } 1268 } 1269 if (param == NULL || value == NULL) { 1270 ALOGW("loadEffectParameter() invalid parameter description %s", root->name); 1271 goto error; 1272 } 1273 1274 fx_param->psize = 0; 1275 param = param->first_child; 1276 while (param) { 1277 ALOGV("loadEffectParameter() reading param of type %s", param->name); 1278 size_t size = readParamValue(param, (char *)fx_param, &curSize, &totSize); 1279 if (size == 0) { 1280 goto error; 1281 } 1282 fx_param->psize += size; 1283 param = param->next; 1284 } 1285 1286 // align start of value field on 32 bit boundary 1287 curSize = ((curSize - 1 ) / sizeof(int) + 1) * sizeof(int); 1288 1289 fx_param->vsize = 0; 1290 value = value->first_child; 1291 while (value) { 1292 ALOGV("loadEffectParameter() reading value of type %s", value->name); 1293 size_t size = readParamValue(value, (char *)fx_param, &curSize, &totSize); 1294 if (size == 0) { 1295 goto error; 1296 } 1297 fx_param->vsize += size; 1298 value = value->next; 1299 } 1300 1301 return fx_param; 1302 1303 error: 1304 delete fx_param; 1305 return NULL; 1306 } 1307 1308 void AudioPolicyService::loadEffectParameters(cnode *root, Vector <effect_param_t *>& params) 1309 { 1310 cnode *node = root->first_child; 1311 while (node) { 1312 ALOGV("loadEffectParameters() loading param %s", node->name); 1313 effect_param_t *param = loadEffectParameter(node); 1314 if (param == NULL) { 1315 node = node->next; 1316 continue; 1317 } 1318 params.add(param); 1319 node = node->next; 1320 } 1321 } 1322 1323 AudioPolicyService::InputSourceDesc *AudioPolicyService::loadInputSource( 1324 cnode *root, 1325 const Vector <EffectDesc *>& effects) 1326 { 1327 cnode *node = root->first_child; 1328 if (node == NULL) { 1329 ALOGW("loadInputSource() empty element %s", root->name); 1330 return NULL; 1331 } 1332 InputSourceDesc *source = new InputSourceDesc(); 1333 while (node) { 1334 size_t i; 1335 for (i = 0; i < effects.size(); i++) { 1336 if (strncmp(effects[i]->mName, node->name, EFFECT_STRING_LEN_MAX) == 0) { 1337 ALOGV("loadInputSource() found effect %s in list", node->name); 1338 break; 1339 } 1340 } 1341 if (i == effects.size()) { 1342 ALOGV("loadInputSource() effect %s not in list", node->name); 1343 node = node->next; 1344 continue; 1345 } 1346 EffectDesc *effect = new EffectDesc(*effects[i]); // deep copy 1347 loadEffectParameters(node, effect->mParams); 1348 ALOGV("loadInputSource() adding effect %s uuid %08x", effect->mName, effect->mUuid.timeLow); 1349 source->mEffects.add(effect); 1350 node = node->next; 1351 } 1352 if (source->mEffects.size() == 0) { 1353 ALOGW("loadInputSource() no valid effects found in source %s", root->name); 1354 delete source; 1355 return NULL; 1356 } 1357 return source; 1358 } 1359 1360 status_t AudioPolicyService::loadInputSources(cnode *root, const Vector <EffectDesc *>& effects) 1361 { 1362 cnode *node = config_find(root, PREPROCESSING_TAG); 1363 if (node == NULL) { 1364 return -ENOENT; 1365 } 1366 node = node->first_child; 1367 while (node) { 1368 audio_source_t source = inputSourceNameToEnum(node->name); 1369 if (source == AUDIO_SOURCE_CNT) { 1370 ALOGW("loadInputSources() invalid input source %s", node->name); 1371 node = node->next; 1372 continue; 1373 } 1374 ALOGV("loadInputSources() loading input source %s", node->name); 1375 InputSourceDesc *desc = loadInputSource(node, effects); 1376 if (desc == NULL) { 1377 node = node->next; 1378 continue; 1379 } 1380 mInputSources.add(source, desc); 1381 node = node->next; 1382 } 1383 return NO_ERROR; 1384 } 1385 1386 AudioPolicyService::EffectDesc *AudioPolicyService::loadEffect(cnode *root) 1387 { 1388 cnode *node = config_find(root, UUID_TAG); 1389 if (node == NULL) { 1390 return NULL; 1391 } 1392 effect_uuid_t uuid; 1393 if (AudioEffect::stringToGuid(node->value, &uuid) != NO_ERROR) { 1394 ALOGW("loadEffect() invalid uuid %s", node->value); 1395 return NULL; 1396 } 1397 return new EffectDesc(root->name, uuid); 1398 } 1399 1400 status_t AudioPolicyService::loadEffects(cnode *root, Vector <EffectDesc *>& effects) 1401 { 1402 cnode *node = config_find(root, EFFECTS_TAG); 1403 if (node == NULL) { 1404 return -ENOENT; 1405 } 1406 node = node->first_child; 1407 while (node) { 1408 ALOGV("loadEffects() loading effect %s", node->name); 1409 EffectDesc *effect = loadEffect(node); 1410 if (effect == NULL) { 1411 node = node->next; 1412 continue; 1413 } 1414 effects.add(effect); 1415 node = node->next; 1416 } 1417 return NO_ERROR; 1418 } 1419 1420 status_t AudioPolicyService::loadPreProcessorConfig(const char *path) 1421 { 1422 cnode *root; 1423 char *data; 1424 1425 data = (char *)load_file(path, NULL); 1426 if (data == NULL) { 1427 return -ENODEV; 1428 } 1429 root = config_node("", ""); 1430 config_load(root, data); 1431 1432 Vector <EffectDesc *> effects; 1433 loadEffects(root, effects); 1434 loadInputSources(root, effects); 1435 1436 config_free(root); 1437 free(root); 1438 free(data); 1439 1440 return NO_ERROR; 1441 } 1442 1443 /* implementation of the interface to the policy manager */ 1444 extern "C" { 1445 1446 1447 static audio_module_handle_t aps_load_hw_module(void *service, 1448 const char *name) 1449 { 1450 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1451 if (af == 0) { 1452 ALOGW("%s: could not get AudioFlinger", __func__); 1453 return 0; 1454 } 1455 1456 return af->loadHwModule(name); 1457 } 1458 1459 // deprecated: replaced by aps_open_output_on_module() 1460 static audio_io_handle_t aps_open_output(void *service, 1461 audio_devices_t *pDevices, 1462 uint32_t *pSamplingRate, 1463 audio_format_t *pFormat, 1464 audio_channel_mask_t *pChannelMask, 1465 uint32_t *pLatencyMs, 1466 audio_output_flags_t flags) 1467 { 1468 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1469 if (af == 0) { 1470 ALOGW("%s: could not get AudioFlinger", __func__); 1471 return 0; 1472 } 1473 1474 return af->openOutput((audio_module_handle_t)0, pDevices, pSamplingRate, pFormat, pChannelMask, 1475 pLatencyMs, flags); 1476 } 1477 1478 static audio_io_handle_t aps_open_output_on_module(void *service, 1479 audio_module_handle_t module, 1480 audio_devices_t *pDevices, 1481 uint32_t *pSamplingRate, 1482 audio_format_t *pFormat, 1483 audio_channel_mask_t *pChannelMask, 1484 uint32_t *pLatencyMs, 1485 audio_output_flags_t flags, 1486 const audio_offload_info_t *offloadInfo) 1487 { 1488 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1489 if (af == 0) { 1490 ALOGW("%s: could not get AudioFlinger", __func__); 1491 return 0; 1492 } 1493 return af->openOutput(module, pDevices, pSamplingRate, pFormat, pChannelMask, 1494 pLatencyMs, flags, offloadInfo); 1495 } 1496 1497 static audio_io_handle_t aps_open_dup_output(void *service, 1498 audio_io_handle_t output1, 1499 audio_io_handle_t output2) 1500 { 1501 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1502 if (af == 0) { 1503 ALOGW("%s: could not get AudioFlinger", __func__); 1504 return 0; 1505 } 1506 return af->openDuplicateOutput(output1, output2); 1507 } 1508 1509 static int aps_close_output(void *service, audio_io_handle_t output) 1510 { 1511 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1512 if (af == 0) 1513 return PERMISSION_DENIED; 1514 1515 return af->closeOutput(output); 1516 } 1517 1518 static int aps_suspend_output(void *service, audio_io_handle_t output) 1519 { 1520 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1521 if (af == 0) { 1522 ALOGW("%s: could not get AudioFlinger", __func__); 1523 return PERMISSION_DENIED; 1524 } 1525 1526 return af->suspendOutput(output); 1527 } 1528 1529 static int aps_restore_output(void *service, audio_io_handle_t output) 1530 { 1531 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1532 if (af == 0) { 1533 ALOGW("%s: could not get AudioFlinger", __func__); 1534 return PERMISSION_DENIED; 1535 } 1536 1537 return af->restoreOutput(output); 1538 } 1539 1540 // deprecated: replaced by aps_open_input_on_module(), and acoustics parameter is ignored 1541 static audio_io_handle_t aps_open_input(void *service, 1542 audio_devices_t *pDevices, 1543 uint32_t *pSamplingRate, 1544 audio_format_t *pFormat, 1545 audio_channel_mask_t *pChannelMask, 1546 audio_in_acoustics_t acoustics) 1547 { 1548 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1549 if (af == 0) { 1550 ALOGW("%s: could not get AudioFlinger", __func__); 1551 return 0; 1552 } 1553 1554 return af->openInput((audio_module_handle_t)0, pDevices, pSamplingRate, pFormat, pChannelMask); 1555 } 1556 1557 static audio_io_handle_t aps_open_input_on_module(void *service, 1558 audio_module_handle_t module, 1559 audio_devices_t *pDevices, 1560 uint32_t *pSamplingRate, 1561 audio_format_t *pFormat, 1562 audio_channel_mask_t *pChannelMask) 1563 { 1564 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1565 if (af == 0) { 1566 ALOGW("%s: could not get AudioFlinger", __func__); 1567 return 0; 1568 } 1569 1570 return af->openInput(module, pDevices, pSamplingRate, pFormat, pChannelMask); 1571 } 1572 1573 static int aps_close_input(void *service, audio_io_handle_t input) 1574 { 1575 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1576 if (af == 0) 1577 return PERMISSION_DENIED; 1578 1579 return af->closeInput(input); 1580 } 1581 1582 static int aps_set_stream_output(void *service, audio_stream_type_t stream, 1583 audio_io_handle_t output) 1584 { 1585 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1586 if (af == 0) 1587 return PERMISSION_DENIED; 1588 1589 return af->setStreamOutput(stream, output); 1590 } 1591 1592 static int aps_move_effects(void *service, int session, 1593 audio_io_handle_t src_output, 1594 audio_io_handle_t dst_output) 1595 { 1596 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1597 if (af == 0) 1598 return PERMISSION_DENIED; 1599 1600 return af->moveEffects(session, src_output, dst_output); 1601 } 1602 1603 static char * aps_get_parameters(void *service, audio_io_handle_t io_handle, 1604 const char *keys) 1605 { 1606 String8 result = AudioSystem::getParameters(io_handle, String8(keys)); 1607 return strdup(result.string()); 1608 } 1609 1610 static void aps_set_parameters(void *service, audio_io_handle_t io_handle, 1611 const char *kv_pairs, int delay_ms) 1612 { 1613 AudioPolicyService *audioPolicyService = (AudioPolicyService *)service; 1614 1615 audioPolicyService->setParameters(io_handle, kv_pairs, delay_ms); 1616 } 1617 1618 static int aps_set_stream_volume(void *service, audio_stream_type_t stream, 1619 float volume, audio_io_handle_t output, 1620 int delay_ms) 1621 { 1622 AudioPolicyService *audioPolicyService = (AudioPolicyService *)service; 1623 1624 return audioPolicyService->setStreamVolume(stream, volume, output, 1625 delay_ms); 1626 } 1627 1628 static int aps_start_tone(void *service, audio_policy_tone_t tone, 1629 audio_stream_type_t stream) 1630 { 1631 AudioPolicyService *audioPolicyService = (AudioPolicyService *)service; 1632 1633 return audioPolicyService->startTone(tone, stream); 1634 } 1635 1636 static int aps_stop_tone(void *service) 1637 { 1638 AudioPolicyService *audioPolicyService = (AudioPolicyService *)service; 1639 1640 return audioPolicyService->stopTone(); 1641 } 1642 1643 static int aps_set_voice_volume(void *service, float volume, int delay_ms) 1644 { 1645 AudioPolicyService *audioPolicyService = (AudioPolicyService *)service; 1646 1647 return audioPolicyService->setVoiceVolume(volume, delay_ms); 1648 } 1649 1650 }; // extern "C" 1651 1652 namespace { 1653 struct audio_policy_service_ops aps_ops = { 1654 open_output : aps_open_output, 1655 open_duplicate_output : aps_open_dup_output, 1656 close_output : aps_close_output, 1657 suspend_output : aps_suspend_output, 1658 restore_output : aps_restore_output, 1659 open_input : aps_open_input, 1660 close_input : aps_close_input, 1661 set_stream_volume : aps_set_stream_volume, 1662 set_stream_output : aps_set_stream_output, 1663 set_parameters : aps_set_parameters, 1664 get_parameters : aps_get_parameters, 1665 start_tone : aps_start_tone, 1666 stop_tone : aps_stop_tone, 1667 set_voice_volume : aps_set_voice_volume, 1668 move_effects : aps_move_effects, 1669 load_hw_module : aps_load_hw_module, 1670 open_output_on_module : aps_open_output_on_module, 1671 open_input_on_module : aps_open_input_on_module, 1672 }; 1673 }; // namespace <unnamed> 1674 1675 }; // namespace android 1676
