AudioPolicyService.cpp revision 8dad0e31c2366c501bd1d600261d0af35a6ca786
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#undef __STRICT_ANSI__ 21#define __STDINT_LIMITS 22#define __STDC_LIMIT_MACROS 23#include <stdint.h> 24 25#include <sys/time.h> 26#include <binder/IServiceManager.h> 27#include <utils/Log.h> 28#include <cutils/properties.h> 29#include <binder/IPCThreadState.h> 30#include <utils/String16.h> 31#include <utils/threads.h> 32#include "AudioPolicyService.h" 33#include <cutils/properties.h> 34#include <hardware_legacy/power.h> 35#include <media/AudioEffect.h> 36#include <media/EffectsFactoryApi.h> 37 38#include <hardware/hardware.h> 39#include <system/audio.h> 40#include <system/audio_policy.h> 41#include <hardware/audio_policy.h> 42#include <audio_effects/audio_effects_conf.h> 43 44namespace android { 45 46static const char kDeadlockedString[] = "AudioPolicyService may be deadlocked\n"; 47static const char kCmdDeadlockedString[] = "AudioPolicyService command thread may be deadlocked\n"; 48 49static const int kDumpLockRetries = 50; 50static const int kDumpLockSleep = 20000; 51 52static bool checkPermission() { 53 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 54 bool ok = checkCallingPermission(String16("android.permission.MODIFY_AUDIO_SETTINGS")); 55 if (!ok) ALOGE("Request requires android.permission.MODIFY_AUDIO_SETTINGS"); 56 return ok; 57} 58 59namespace { 60 extern struct audio_policy_service_ops aps_ops; 61}; 62 63// ---------------------------------------------------------------------------- 64 65AudioPolicyService::AudioPolicyService() 66 : BnAudioPolicyService() , mpAudioPolicyDev(NULL) , mpAudioPolicy(NULL) 67{ 68 char value[PROPERTY_VALUE_MAX]; 69 const struct hw_module_t *module; 70 int forced_val; 71 int rc; 72 73 Mutex::Autolock _l(mLock); 74 75 // start tone playback thread 76 mTonePlaybackThread = new AudioCommandThread(String8("")); 77 // start audio commands thread 78 mAudioCommandThread = new AudioCommandThread(String8("ApmCommandThread")); 79 80 /* instantiate the audio policy manager */ 81 rc = hw_get_module(AUDIO_POLICY_HARDWARE_MODULE_ID, &module); 82 if (rc) 83 return; 84 85 rc = audio_policy_dev_open(module, &mpAudioPolicyDev); 86 ALOGE_IF(rc, "couldn't open audio policy device (%s)", strerror(-rc)); 87 if (rc) 88 return; 89 90 rc = mpAudioPolicyDev->create_audio_policy(mpAudioPolicyDev, &aps_ops, this, 91 &mpAudioPolicy); 92 ALOGE_IF(rc, "couldn't create audio policy (%s)", strerror(-rc)); 93 if (rc) 94 return; 95 96 rc = mpAudioPolicy->init_check(mpAudioPolicy); 97 ALOGE_IF(rc, "couldn't init_check the audio policy (%s)", strerror(-rc)); 98 if (rc) 99 return; 100 101 property_get("ro.camera.sound.forced", value, "0"); 102 forced_val = strtol(value, NULL, 0); 103 mpAudioPolicy->set_can_mute_enforced_audible(mpAudioPolicy, !forced_val); 104 105 ALOGI("Loaded audio policy from %s (%s)", module->name, module->id); 106 107 // load audio pre processing modules 108 if (access(AUDIO_EFFECT_VENDOR_CONFIG_FILE, R_OK) == 0) { 109 loadPreProcessorConfig(AUDIO_EFFECT_VENDOR_CONFIG_FILE); 110 } else if (access(AUDIO_EFFECT_DEFAULT_CONFIG_FILE, R_OK) == 0) { 111 loadPreProcessorConfig(AUDIO_EFFECT_DEFAULT_CONFIG_FILE); 112 } 113} 114 115AudioPolicyService::~AudioPolicyService() 116{ 117 mTonePlaybackThread->exit(); 118 mTonePlaybackThread.clear(); 119 mAudioCommandThread->exit(); 120 mAudioCommandThread.clear(); 121 122 123 // release audio pre processing resources 124 for (size_t i = 0; i < mInputSources.size(); i++) { 125 InputSourceDesc *source = mInputSources.valueAt(i); 126 Vector <EffectDesc *> effects = source->mEffects; 127 for (size_t j = 0; j < effects.size(); j++) { 128 delete effects[j]->mName; 129 Vector <effect_param_t *> params = effects[j]->mParams; 130 for (size_t k = 0; k < params.size(); k++) { 131 delete params[k]; 132 } 133 params.clear(); 134 delete effects[j]; 135 } 136 effects.clear(); 137 delete source; 138 } 139 mInputSources.clear(); 140 141 for (size_t i = 0; i < mInputs.size(); i++) { 142 mInputs.valueAt(i)->mEffects.clear(); 143 delete mInputs.valueAt(i); 144 } 145 mInputs.clear(); 146 147 if (mpAudioPolicy && mpAudioPolicyDev) 148 mpAudioPolicyDev->destroy_audio_policy(mpAudioPolicyDev, mpAudioPolicy); 149 if (mpAudioPolicyDev) 150 audio_policy_dev_close(mpAudioPolicyDev); 151} 152 153status_t AudioPolicyService::setDeviceConnectionState(audio_devices_t device, 154 audio_policy_dev_state_t state, 155 const char *device_address) 156{ 157 if (mpAudioPolicy == NULL) { 158 return NO_INIT; 159 } 160 if (!checkPermission()) { 161 return PERMISSION_DENIED; 162 } 163 if (!audio_is_output_device(device) && !audio_is_input_device(device)) { 164 return BAD_VALUE; 165 } 166 if (state != AUDIO_POLICY_DEVICE_STATE_AVAILABLE && 167 state != AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE) { 168 return BAD_VALUE; 169 } 170 171 ALOGV("setDeviceConnectionState() tid %d", gettid()); 172 Mutex::Autolock _l(mLock); 173 return mpAudioPolicy->set_device_connection_state(mpAudioPolicy, device, 174 state, device_address); 175} 176 177audio_policy_dev_state_t AudioPolicyService::getDeviceConnectionState( 178 audio_devices_t device, 179 const char *device_address) 180{ 181 if (mpAudioPolicy == NULL) { 182 return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 183 } 184 return mpAudioPolicy->get_device_connection_state(mpAudioPolicy, device, 185 device_address); 186} 187 188status_t AudioPolicyService::setPhoneState(audio_mode_t state) 189{ 190 if (mpAudioPolicy == NULL) { 191 return NO_INIT; 192 } 193 if (!checkPermission()) { 194 return PERMISSION_DENIED; 195 } 196 if (uint32_t(state) >= AUDIO_MODE_CNT) { 197 return BAD_VALUE; 198 } 199 200 ALOGV("setPhoneState() tid %d", gettid()); 201 202 // TODO: check if it is more appropriate to do it in platform specific policy manager 203 AudioSystem::setMode(state); 204 205 Mutex::Autolock _l(mLock); 206 mpAudioPolicy->set_phone_state(mpAudioPolicy, state); 207 return NO_ERROR; 208} 209 210status_t AudioPolicyService::setRingerMode(uint32_t mode, uint32_t mask) 211{ 212 if (mpAudioPolicy == NULL) { 213 return NO_INIT; 214 } 215 if (!checkPermission()) { 216 return PERMISSION_DENIED; 217 } 218 219 mpAudioPolicy->set_ringer_mode(mpAudioPolicy, mode, mask); 220 return NO_ERROR; 221} 222 223status_t AudioPolicyService::setForceUse(audio_policy_force_use_t usage, 224 audio_policy_forced_cfg_t config) 225{ 226 if (mpAudioPolicy == NULL) { 227 return NO_INIT; 228 } 229 if (!checkPermission()) { 230 return PERMISSION_DENIED; 231 } 232 if (usage < 0 || usage >= AUDIO_POLICY_FORCE_USE_CNT) { 233 return BAD_VALUE; 234 } 235 if (config < 0 || config >= AUDIO_POLICY_FORCE_CFG_CNT) { 236 return BAD_VALUE; 237 } 238 ALOGV("setForceUse() tid %d", gettid()); 239 Mutex::Autolock _l(mLock); 240 mpAudioPolicy->set_force_use(mpAudioPolicy, usage, config); 241 return NO_ERROR; 242} 243 244audio_policy_forced_cfg_t AudioPolicyService::getForceUse(audio_policy_force_use_t usage) 245{ 246 if (mpAudioPolicy == NULL) { 247 return AUDIO_POLICY_FORCE_NONE; 248 } 249 if (usage < 0 || usage >= AUDIO_POLICY_FORCE_USE_CNT) { 250 return AUDIO_POLICY_FORCE_NONE; 251 } 252 return mpAudioPolicy->get_force_use(mpAudioPolicy, usage); 253} 254 255audio_io_handle_t AudioPolicyService::getOutput(audio_stream_type_t stream, 256 uint32_t samplingRate, 257 uint32_t format, 258 uint32_t channels, 259 audio_policy_output_flags_t flags) 260{ 261 if (mpAudioPolicy == NULL) { 262 return 0; 263 } 264 ALOGV("getOutput() tid %d", gettid()); 265 Mutex::Autolock _l(mLock); 266 return mpAudioPolicy->get_output(mpAudioPolicy, stream, samplingRate, format, channels, flags); 267} 268 269status_t AudioPolicyService::startOutput(audio_io_handle_t output, 270 audio_stream_type_t stream, 271 int session) 272{ 273 if (mpAudioPolicy == NULL) { 274 return NO_INIT; 275 } 276 ALOGV("startOutput() tid %d", gettid()); 277 Mutex::Autolock _l(mLock); 278 return mpAudioPolicy->start_output(mpAudioPolicy, output, stream, session); 279} 280 281status_t AudioPolicyService::stopOutput(audio_io_handle_t output, 282 audio_stream_type_t stream, 283 int session) 284{ 285 if (mpAudioPolicy == NULL) { 286 return NO_INIT; 287 } 288 ALOGV("stopOutput() tid %d", gettid()); 289 Mutex::Autolock _l(mLock); 290 return mpAudioPolicy->stop_output(mpAudioPolicy, output, stream, session); 291} 292 293void AudioPolicyService::releaseOutput(audio_io_handle_t output) 294{ 295 if (mpAudioPolicy == NULL) { 296 return; 297 } 298 ALOGV("releaseOutput() tid %d", gettid()); 299 Mutex::Autolock _l(mLock); 300 mpAudioPolicy->release_output(mpAudioPolicy, output); 301} 302 303audio_io_handle_t AudioPolicyService::getInput(int inputSource, 304 uint32_t samplingRate, 305 uint32_t format, 306 uint32_t channels, 307 audio_in_acoustics_t acoustics, 308 int audioSession) 309{ 310 if (mpAudioPolicy == NULL) { 311 return 0; 312 } 313 Mutex::Autolock _l(mLock); 314 audio_io_handle_t input = mpAudioPolicy->get_input(mpAudioPolicy, inputSource, samplingRate, 315 format, channels, acoustics); 316 317 if (input == 0) { 318 return input; 319 } 320 // create audio pre processors according to input source 321 ssize_t index = mInputSources.indexOfKey((audio_source_t)inputSource); 322 if (index < 0) { 323 return input; 324 } 325 ssize_t idx = mInputs.indexOfKey(input); 326 InputDesc *inputDesc; 327 if (idx < 0) { 328 inputDesc = new InputDesc(); 329 inputDesc->mSessionId = audioSession; 330 mInputs.add(input, inputDesc); 331 } else { 332 inputDesc = mInputs.valueAt(idx); 333 } 334 335 Vector <EffectDesc *> effects = mInputSources.valueAt(index)->mEffects; 336 for (size_t i = 0; i < effects.size(); i++) { 337 EffectDesc *effect = effects[i]; 338 sp<AudioEffect> fx = new AudioEffect(NULL, &effect->mUuid, -1, 0, 0, audioSession, input); 339 status_t status = fx->initCheck(); 340 if (status != NO_ERROR && status != ALREADY_EXISTS) { 341 ALOGW("Failed to create Fx %s on input %d", effect->mName, input); 342 // fx goes out of scope and strong ref on AudioEffect is released 343 continue; 344 } 345 for (size_t j = 0; j < effect->mParams.size(); j++) { 346 fx->setParameter(effect->mParams[j]); 347 } 348 inputDesc->mEffects.add(fx); 349 } 350 setPreProcessorEnabled(inputDesc, true); 351 return input; 352} 353 354status_t AudioPolicyService::startInput(audio_io_handle_t input) 355{ 356 if (mpAudioPolicy == NULL) { 357 return NO_INIT; 358 } 359 Mutex::Autolock _l(mLock); 360 361 return mpAudioPolicy->start_input(mpAudioPolicy, input); 362} 363 364status_t AudioPolicyService::stopInput(audio_io_handle_t input) 365{ 366 if (mpAudioPolicy == NULL) { 367 return NO_INIT; 368 } 369 Mutex::Autolock _l(mLock); 370 371 return mpAudioPolicy->stop_input(mpAudioPolicy, input); 372} 373 374void AudioPolicyService::releaseInput(audio_io_handle_t input) 375{ 376 if (mpAudioPolicy == NULL) { 377 return; 378 } 379 Mutex::Autolock _l(mLock); 380 mpAudioPolicy->release_input(mpAudioPolicy, input); 381 382 ssize_t index = mInputs.indexOfKey(input); 383 if (index < 0) { 384 return; 385 } 386 InputDesc *inputDesc = mInputs.valueAt(index); 387 setPreProcessorEnabled(inputDesc, false); 388 inputDesc->mEffects.clear(); 389 delete inputDesc; 390 mInputs.removeItemsAt(index); 391} 392 393status_t AudioPolicyService::initStreamVolume(audio_stream_type_t stream, 394 int indexMin, 395 int indexMax) 396{ 397 if (mpAudioPolicy == NULL) { 398 return NO_INIT; 399 } 400 if (!checkPermission()) { 401 return PERMISSION_DENIED; 402 } 403 if (uint32_t(stream) >= AUDIO_STREAM_CNT) { 404 return BAD_VALUE; 405 } 406 mpAudioPolicy->init_stream_volume(mpAudioPolicy, stream, indexMin, indexMax); 407 return NO_ERROR; 408} 409 410status_t AudioPolicyService::setStreamVolumeIndex(audio_stream_type_t stream, 411 int index, 412 audio_devices_t device) 413{ 414 if (mpAudioPolicy == NULL) { 415 return NO_INIT; 416 } 417 if (!checkPermission()) { 418 return PERMISSION_DENIED; 419 } 420 if (uint32_t(stream) >= AUDIO_STREAM_CNT) { 421 return BAD_VALUE; 422 } 423 424 if (mpAudioPolicy->set_stream_volume_index_for_device) { 425 return mpAudioPolicy->set_stream_volume_index_for_device(mpAudioPolicy, 426 stream, 427 index, 428 device); 429 } else { 430 return mpAudioPolicy->set_stream_volume_index(mpAudioPolicy, stream, index); 431 } 432} 433 434status_t AudioPolicyService::getStreamVolumeIndex(audio_stream_type_t stream, 435 int *index, 436 audio_devices_t device) 437{ 438 if (mpAudioPolicy == NULL) { 439 return NO_INIT; 440 } 441 if (uint32_t(stream) >= AUDIO_STREAM_CNT) { 442 return BAD_VALUE; 443 } 444 if (mpAudioPolicy->get_stream_volume_index_for_device) { 445 return mpAudioPolicy->get_stream_volume_index_for_device(mpAudioPolicy, 446 stream, 447 index, 448 device); 449 } else { 450 return mpAudioPolicy->get_stream_volume_index(mpAudioPolicy, stream, index); 451 } 452} 453 454uint32_t AudioPolicyService::getStrategyForStream(audio_stream_type_t stream) 455{ 456 if (mpAudioPolicy == NULL) { 457 return 0; 458 } 459 return mpAudioPolicy->get_strategy_for_stream(mpAudioPolicy, stream); 460} 461 462uint32_t AudioPolicyService::getDevicesForStream(audio_stream_type_t stream) 463{ 464 if (mpAudioPolicy == NULL) { 465 return 0; 466 } 467 return mpAudioPolicy->get_devices_for_stream(mpAudioPolicy, stream); 468} 469 470audio_io_handle_t AudioPolicyService::getOutputForEffect(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 479status_t AudioPolicyService::registerEffect(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 491status_t AudioPolicyService::unregisterEffect(int id) 492{ 493 if (mpAudioPolicy == NULL) { 494 return NO_INIT; 495 } 496 return mpAudioPolicy->unregister_effect(mpAudioPolicy, id); 497} 498 499status_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 507bool 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 516status_t AudioPolicyService::queryDefaultPreProcessing(int audioSession, 517 effect_descriptor_t *descriptors, 518 uint32_t *count) 519{ 520 521 if (mpAudioPolicy == NULL) { 522 *count = 0; 523 return NO_INIT; 524 } 525 Mutex::Autolock _l(mLock); 526 status_t status = NO_ERROR; 527 528 size_t index; 529 for (index = 0; index < mInputs.size(); index++) { 530 if (mInputs.valueAt(index)->mSessionId == audioSession) { 531 break; 532 } 533 } 534 if (index == mInputs.size()) { 535 *count = 0; 536 return BAD_VALUE; 537 } 538 Vector< sp<AudioEffect> > effects = mInputs.valueAt(index)->mEffects; 539 540 for (size_t i = 0; i < effects.size(); i++) { 541 effect_descriptor_t desc = effects[i]->descriptor(); 542 if (i < *count) { 543 memcpy(descriptors + i, &desc, sizeof(effect_descriptor_t)); 544 } 545 } 546 if (effects.size() > *count) { 547 status = NO_MEMORY; 548 } 549 *count = effects.size(); 550 return status; 551} 552 553void AudioPolicyService::binderDied(const wp<IBinder>& who) { 554 ALOGW("binderDied() %p, tid %d, calling tid %d", who.unsafe_get(), gettid(), 555 IPCThreadState::self()->getCallingPid()); 556} 557 558static bool tryLock(Mutex& mutex) 559{ 560 bool locked = false; 561 for (int i = 0; i < kDumpLockRetries; ++i) { 562 if (mutex.tryLock() == NO_ERROR) { 563 locked = true; 564 break; 565 } 566 usleep(kDumpLockSleep); 567 } 568 return locked; 569} 570 571status_t AudioPolicyService::dumpInternals(int fd) 572{ 573 const size_t SIZE = 256; 574 char buffer[SIZE]; 575 String8 result; 576 577 snprintf(buffer, SIZE, "PolicyManager Interface: %p\n", mpAudioPolicy); 578 result.append(buffer); 579 snprintf(buffer, SIZE, "Command Thread: %p\n", mAudioCommandThread.get()); 580 result.append(buffer); 581 snprintf(buffer, SIZE, "Tones Thread: %p\n", mTonePlaybackThread.get()); 582 result.append(buffer); 583 584 write(fd, result.string(), result.size()); 585 return NO_ERROR; 586} 587 588status_t AudioPolicyService::dump(int fd, const Vector<String16>& args) 589{ 590 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 591 dumpPermissionDenial(fd); 592 } else { 593 bool locked = tryLock(mLock); 594 if (!locked) { 595 String8 result(kDeadlockedString); 596 write(fd, result.string(), result.size()); 597 } 598 599 dumpInternals(fd); 600 if (mAudioCommandThread != NULL) { 601 mAudioCommandThread->dump(fd); 602 } 603 if (mTonePlaybackThread != NULL) { 604 mTonePlaybackThread->dump(fd); 605 } 606 607 if (mpAudioPolicy) { 608 mpAudioPolicy->dump(mpAudioPolicy, fd); 609 } 610 611 if (locked) mLock.unlock(); 612 } 613 return NO_ERROR; 614} 615 616status_t AudioPolicyService::dumpPermissionDenial(int fd) 617{ 618 const size_t SIZE = 256; 619 char buffer[SIZE]; 620 String8 result; 621 snprintf(buffer, SIZE, "Permission Denial: " 622 "can't dump AudioPolicyService from pid=%d, uid=%d\n", 623 IPCThreadState::self()->getCallingPid(), 624 IPCThreadState::self()->getCallingUid()); 625 result.append(buffer); 626 write(fd, result.string(), result.size()); 627 return NO_ERROR; 628} 629 630void AudioPolicyService::setPreProcessorEnabled(InputDesc *inputDesc, bool enabled) 631{ 632 Vector<sp<AudioEffect> > fxVector = inputDesc->mEffects; 633 for (size_t i = 0; i < fxVector.size(); i++) { 634 sp<AudioEffect> fx = fxVector.itemAt(i); 635 fx->setEnabled(enabled); 636 } 637} 638 639status_t AudioPolicyService::onTransact( 640 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 641{ 642 return BnAudioPolicyService::onTransact(code, data, reply, flags); 643} 644 645 646// ----------- AudioPolicyService::AudioCommandThread implementation ---------- 647 648AudioPolicyService::AudioCommandThread::AudioCommandThread(String8 name) 649 : Thread(false), mName(name) 650{ 651 mpToneGenerator = NULL; 652} 653 654 655AudioPolicyService::AudioCommandThread::~AudioCommandThread() 656{ 657 if (mName != "" && !mAudioCommands.isEmpty()) { 658 release_wake_lock(mName.string()); 659 } 660 mAudioCommands.clear(); 661 if (mpToneGenerator != NULL) delete mpToneGenerator; 662} 663 664void AudioPolicyService::AudioCommandThread::onFirstRef() 665{ 666 if (mName != "") { 667 run(mName.string(), ANDROID_PRIORITY_AUDIO); 668 } else { 669 run("AudioCommandThread", ANDROID_PRIORITY_AUDIO); 670 } 671} 672 673bool AudioPolicyService::AudioCommandThread::threadLoop() 674{ 675 nsecs_t waitTime = INT64_MAX; 676 677 mLock.lock(); 678 while (!exitPending()) 679 { 680 while(!mAudioCommands.isEmpty()) { 681 nsecs_t curTime = systemTime(); 682 // commands are sorted by increasing time stamp: execute them from index 0 and up 683 if (mAudioCommands[0]->mTime <= curTime) { 684 AudioCommand *command = mAudioCommands[0]; 685 mAudioCommands.removeAt(0); 686 mLastCommand = *command; 687 688 switch (command->mCommand) { 689 case START_TONE: { 690 mLock.unlock(); 691 ToneData *data = (ToneData *)command->mParam; 692 ALOGV("AudioCommandThread() processing start tone %d on stream %d", 693 data->mType, data->mStream); 694 if (mpToneGenerator != NULL) 695 delete mpToneGenerator; 696 mpToneGenerator = new ToneGenerator(data->mStream, 1.0); 697 mpToneGenerator->startTone(data->mType); 698 delete data; 699 mLock.lock(); 700 }break; 701 case STOP_TONE: { 702 mLock.unlock(); 703 ALOGV("AudioCommandThread() processing stop tone"); 704 if (mpToneGenerator != NULL) { 705 mpToneGenerator->stopTone(); 706 delete mpToneGenerator; 707 mpToneGenerator = NULL; 708 } 709 mLock.lock(); 710 }break; 711 case SET_VOLUME: { 712 VolumeData *data = (VolumeData *)command->mParam; 713 ALOGV("AudioCommandThread() processing set volume stream %d, \ 714 volume %f, output %d", data->mStream, data->mVolume, data->mIO); 715 command->mStatus = AudioSystem::setStreamVolume(data->mStream, 716 data->mVolume, 717 data->mIO); 718 if (command->mWaitStatus) { 719 command->mCond.signal(); 720 mWaitWorkCV.wait(mLock); 721 } 722 delete data; 723 }break; 724 case SET_PARAMETERS: { 725 ParametersData *data = (ParametersData *)command->mParam; 726 ALOGV("AudioCommandThread() processing set parameters string %s, io %d", 727 data->mKeyValuePairs.string(), data->mIO); 728 command->mStatus = AudioSystem::setParameters(data->mIO, data->mKeyValuePairs); 729 if (command->mWaitStatus) { 730 command->mCond.signal(); 731 mWaitWorkCV.wait(mLock); 732 } 733 delete data; 734 }break; 735 case SET_VOICE_VOLUME: { 736 VoiceVolumeData *data = (VoiceVolumeData *)command->mParam; 737 ALOGV("AudioCommandThread() processing set voice volume volume %f", 738 data->mVolume); 739 command->mStatus = AudioSystem::setVoiceVolume(data->mVolume); 740 if (command->mWaitStatus) { 741 command->mCond.signal(); 742 mWaitWorkCV.wait(mLock); 743 } 744 delete data; 745 }break; 746 default: 747 ALOGW("AudioCommandThread() unknown command %d", command->mCommand); 748 } 749 delete command; 750 waitTime = INT64_MAX; 751 } else { 752 waitTime = mAudioCommands[0]->mTime - curTime; 753 break; 754 } 755 } 756 // release delayed commands wake lock 757 if (mName != "" && mAudioCommands.isEmpty()) { 758 release_wake_lock(mName.string()); 759 } 760 ALOGV("AudioCommandThread() going to sleep"); 761 mWaitWorkCV.waitRelative(mLock, waitTime); 762 ALOGV("AudioCommandThread() waking up"); 763 } 764 mLock.unlock(); 765 return false; 766} 767 768status_t AudioPolicyService::AudioCommandThread::dump(int fd) 769{ 770 const size_t SIZE = 256; 771 char buffer[SIZE]; 772 String8 result; 773 774 snprintf(buffer, SIZE, "AudioCommandThread %p Dump\n", this); 775 result.append(buffer); 776 write(fd, result.string(), result.size()); 777 778 bool locked = tryLock(mLock); 779 if (!locked) { 780 String8 result2(kCmdDeadlockedString); 781 write(fd, result2.string(), result2.size()); 782 } 783 784 snprintf(buffer, SIZE, "- Commands:\n"); 785 result = String8(buffer); 786 result.append(" Command Time Wait pParam\n"); 787 for (int i = 0; i < (int)mAudioCommands.size(); i++) { 788 mAudioCommands[i]->dump(buffer, SIZE); 789 result.append(buffer); 790 } 791 result.append(" Last Command\n"); 792 mLastCommand.dump(buffer, SIZE); 793 result.append(buffer); 794 795 write(fd, result.string(), result.size()); 796 797 if (locked) mLock.unlock(); 798 799 return NO_ERROR; 800} 801 802void AudioPolicyService::AudioCommandThread::startToneCommand(int type, audio_stream_type_t stream) 803{ 804 AudioCommand *command = new AudioCommand(); 805 command->mCommand = START_TONE; 806 ToneData *data = new ToneData(); 807 data->mType = type; 808 data->mStream = stream; 809 command->mParam = (void *)data; 810 command->mWaitStatus = false; 811 Mutex::Autolock _l(mLock); 812 insertCommand_l(command); 813 ALOGV("AudioCommandThread() adding tone start type %d, stream %d", type, stream); 814 mWaitWorkCV.signal(); 815} 816 817void AudioPolicyService::AudioCommandThread::stopToneCommand() 818{ 819 AudioCommand *command = new AudioCommand(); 820 command->mCommand = STOP_TONE; 821 command->mParam = NULL; 822 command->mWaitStatus = false; 823 Mutex::Autolock _l(mLock); 824 insertCommand_l(command); 825 ALOGV("AudioCommandThread() adding tone stop"); 826 mWaitWorkCV.signal(); 827} 828 829status_t AudioPolicyService::AudioCommandThread::volumeCommand(audio_stream_type_t stream, 830 float volume, 831 int output, 832 int delayMs) 833{ 834 status_t status = NO_ERROR; 835 836 AudioCommand *command = new AudioCommand(); 837 command->mCommand = SET_VOLUME; 838 VolumeData *data = new VolumeData(); 839 data->mStream = stream; 840 data->mVolume = volume; 841 data->mIO = output; 842 command->mParam = data; 843 if (delayMs == 0) { 844 command->mWaitStatus = true; 845 } else { 846 command->mWaitStatus = false; 847 } 848 Mutex::Autolock _l(mLock); 849 insertCommand_l(command, delayMs); 850 ALOGV("AudioCommandThread() adding set volume stream %d, volume %f, output %d", 851 stream, volume, output); 852 mWaitWorkCV.signal(); 853 if (command->mWaitStatus) { 854 command->mCond.wait(mLock); 855 status = command->mStatus; 856 mWaitWorkCV.signal(); 857 } 858 return status; 859} 860 861status_t AudioPolicyService::AudioCommandThread::parametersCommand(int ioHandle, 862 const char *keyValuePairs, 863 int delayMs) 864{ 865 status_t status = NO_ERROR; 866 867 AudioCommand *command = new AudioCommand(); 868 command->mCommand = SET_PARAMETERS; 869 ParametersData *data = new ParametersData(); 870 data->mIO = ioHandle; 871 data->mKeyValuePairs = String8(keyValuePairs); 872 command->mParam = data; 873 if (delayMs == 0) { 874 command->mWaitStatus = true; 875 } else { 876 command->mWaitStatus = false; 877 } 878 Mutex::Autolock _l(mLock); 879 insertCommand_l(command, delayMs); 880 ALOGV("AudioCommandThread() adding set parameter string %s, io %d ,delay %d", 881 keyValuePairs, ioHandle, delayMs); 882 mWaitWorkCV.signal(); 883 if (command->mWaitStatus) { 884 command->mCond.wait(mLock); 885 status = command->mStatus; 886 mWaitWorkCV.signal(); 887 } 888 return status; 889} 890 891status_t AudioPolicyService::AudioCommandThread::voiceVolumeCommand(float volume, int delayMs) 892{ 893 status_t status = NO_ERROR; 894 895 AudioCommand *command = new AudioCommand(); 896 command->mCommand = SET_VOICE_VOLUME; 897 VoiceVolumeData *data = new VoiceVolumeData(); 898 data->mVolume = volume; 899 command->mParam = data; 900 if (delayMs == 0) { 901 command->mWaitStatus = true; 902 } else { 903 command->mWaitStatus = false; 904 } 905 Mutex::Autolock _l(mLock); 906 insertCommand_l(command, delayMs); 907 ALOGV("AudioCommandThread() adding set voice volume volume %f", volume); 908 mWaitWorkCV.signal(); 909 if (command->mWaitStatus) { 910 command->mCond.wait(mLock); 911 status = command->mStatus; 912 mWaitWorkCV.signal(); 913 } 914 return status; 915} 916 917// insertCommand_l() must be called with mLock held 918void AudioPolicyService::AudioCommandThread::insertCommand_l(AudioCommand *command, int delayMs) 919{ 920 ssize_t i; 921 Vector <AudioCommand *> removedCommands; 922 923 command->mTime = systemTime() + milliseconds(delayMs); 924 925 // acquire wake lock to make sure delayed commands are processed 926 if (mName != "" && mAudioCommands.isEmpty()) { 927 acquire_wake_lock(PARTIAL_WAKE_LOCK, mName.string()); 928 } 929 930 // check same pending commands with later time stamps and eliminate them 931 for (i = mAudioCommands.size()-1; i >= 0; i--) { 932 AudioCommand *command2 = mAudioCommands[i]; 933 // commands are sorted by increasing time stamp: no need to scan the rest of mAudioCommands 934 if (command2->mTime <= command->mTime) break; 935 if (command2->mCommand != command->mCommand) continue; 936 937 switch (command->mCommand) { 938 case SET_PARAMETERS: { 939 ParametersData *data = (ParametersData *)command->mParam; 940 ParametersData *data2 = (ParametersData *)command2->mParam; 941 if (data->mIO != data2->mIO) break; 942 ALOGV("Comparing parameter command %s to new command %s", 943 data2->mKeyValuePairs.string(), data->mKeyValuePairs.string()); 944 AudioParameter param = AudioParameter(data->mKeyValuePairs); 945 AudioParameter param2 = AudioParameter(data2->mKeyValuePairs); 946 for (size_t j = 0; j < param.size(); j++) { 947 String8 key; 948 String8 value; 949 param.getAt(j, key, value); 950 for (size_t k = 0; k < param2.size(); k++) { 951 String8 key2; 952 String8 value2; 953 param2.getAt(k, key2, value2); 954 if (key2 == key) { 955 param2.remove(key2); 956 ALOGV("Filtering out parameter %s", key2.string()); 957 break; 958 } 959 } 960 } 961 // if all keys have been filtered out, remove the command. 962 // otherwise, update the key value pairs 963 if (param2.size() == 0) { 964 removedCommands.add(command2); 965 } else { 966 data2->mKeyValuePairs = param2.toString(); 967 } 968 } break; 969 970 case SET_VOLUME: { 971 VolumeData *data = (VolumeData *)command->mParam; 972 VolumeData *data2 = (VolumeData *)command2->mParam; 973 if (data->mIO != data2->mIO) break; 974 if (data->mStream != data2->mStream) break; 975 ALOGV("Filtering out volume command on output %d for stream %d", 976 data->mIO, data->mStream); 977 removedCommands.add(command2); 978 } break; 979 case START_TONE: 980 case STOP_TONE: 981 default: 982 break; 983 } 984 } 985 986 // remove filtered commands 987 for (size_t j = 0; j < removedCommands.size(); j++) { 988 // removed commands always have time stamps greater than current command 989 for (size_t k = i + 1; k < mAudioCommands.size(); k++) { 990 if (mAudioCommands[k] == removedCommands[j]) { 991 ALOGV("suppressing command: %d", mAudioCommands[k]->mCommand); 992 mAudioCommands.removeAt(k); 993 break; 994 } 995 } 996 } 997 removedCommands.clear(); 998 999 // insert command at the right place according to its time stamp 1000 ALOGV("inserting command: %d at index %d, num commands %d", 1001 command->mCommand, (int)i+1, mAudioCommands.size()); 1002 mAudioCommands.insertAt(command, i + 1); 1003} 1004 1005void AudioPolicyService::AudioCommandThread::exit() 1006{ 1007 ALOGV("AudioCommandThread::exit"); 1008 { 1009 AutoMutex _l(mLock); 1010 requestExit(); 1011 mWaitWorkCV.signal(); 1012 } 1013 requestExitAndWait(); 1014} 1015 1016void AudioPolicyService::AudioCommandThread::AudioCommand::dump(char* buffer, size_t size) 1017{ 1018 snprintf(buffer, size, " %02d %06d.%03d %01u %p\n", 1019 mCommand, 1020 (int)ns2s(mTime), 1021 (int)ns2ms(mTime)%1000, 1022 mWaitStatus, 1023 mParam); 1024} 1025 1026/******* helpers for the service_ops callbacks defined below *********/ 1027void AudioPolicyService::setParameters(audio_io_handle_t ioHandle, 1028 const char *keyValuePairs, 1029 int delayMs) 1030{ 1031 mAudioCommandThread->parametersCommand((int)ioHandle, keyValuePairs, 1032 delayMs); 1033} 1034 1035int AudioPolicyService::setStreamVolume(audio_stream_type_t stream, 1036 float volume, 1037 audio_io_handle_t output, 1038 int delayMs) 1039{ 1040 return (int)mAudioCommandThread->volumeCommand(stream, volume, 1041 (int)output, delayMs); 1042} 1043 1044int AudioPolicyService::startTone(audio_policy_tone_t tone, 1045 audio_stream_type_t stream) 1046{ 1047 if (tone != AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION) 1048 ALOGE("startTone: illegal tone requested (%d)", tone); 1049 if (stream != AUDIO_STREAM_VOICE_CALL) 1050 ALOGE("startTone: illegal stream (%d) requested for tone %d", stream, 1051 tone); 1052 mTonePlaybackThread->startToneCommand(ToneGenerator::TONE_SUP_CALL_WAITING, 1053 AUDIO_STREAM_VOICE_CALL); 1054 return 0; 1055} 1056 1057int AudioPolicyService::stopTone() 1058{ 1059 mTonePlaybackThread->stopToneCommand(); 1060 return 0; 1061} 1062 1063int AudioPolicyService::setVoiceVolume(float volume, int delayMs) 1064{ 1065 return (int)mAudioCommandThread->voiceVolumeCommand(volume, delayMs); 1066} 1067 1068// ---------------------------------------------------------------------------- 1069// Audio pre-processing configuration 1070// ---------------------------------------------------------------------------- 1071 1072/*static*/ const char * const AudioPolicyService::kInputSourceNames[AUDIO_SOURCE_CNT -1] = { 1073 MIC_SRC_TAG, 1074 VOICE_UL_SRC_TAG, 1075 VOICE_DL_SRC_TAG, 1076 VOICE_CALL_SRC_TAG, 1077 CAMCORDER_SRC_TAG, 1078 VOICE_REC_SRC_TAG, 1079 VOICE_COMM_SRC_TAG 1080}; 1081 1082// returns the audio_source_t enum corresponding to the input source name or 1083// AUDIO_SOURCE_CNT is no match found 1084audio_source_t AudioPolicyService::inputSourceNameToEnum(const char *name) 1085{ 1086 int i; 1087 for (i = AUDIO_SOURCE_MIC; i < AUDIO_SOURCE_CNT; i++) { 1088 if (strcmp(name, kInputSourceNames[i - AUDIO_SOURCE_MIC]) == 0) { 1089 ALOGV("inputSourceNameToEnum found source %s %d", name, i); 1090 break; 1091 } 1092 } 1093 return (audio_source_t)i; 1094} 1095 1096size_t AudioPolicyService::growParamSize(char *param, 1097 size_t size, 1098 size_t *curSize, 1099 size_t *totSize) 1100{ 1101 // *curSize is at least sizeof(effect_param_t) + 2 * sizeof(int) 1102 size_t pos = ((*curSize - 1 ) / size + 1) * size; 1103 1104 if (pos + size > *totSize) { 1105 while (pos + size > *totSize) { 1106 *totSize += ((*totSize + 7) / 8) * 4; 1107 } 1108 param = (char *)realloc(param, *totSize); 1109 } 1110 *curSize = pos + size; 1111 return pos; 1112} 1113 1114size_t AudioPolicyService::readParamValue(cnode *node, 1115 char *param, 1116 size_t *curSize, 1117 size_t *totSize) 1118{ 1119 if (strncmp(node->name, SHORT_TAG, sizeof(SHORT_TAG) + 1) == 0) { 1120 size_t pos = growParamSize(param, sizeof(short), curSize, totSize); 1121 *(short *)((char *)param + pos) = (short)atoi(node->value); 1122 ALOGV("readParamValue() reading short %d", *(short *)((char *)param + pos)); 1123 return sizeof(short); 1124 } else if (strncmp(node->name, INT_TAG, sizeof(INT_TAG) + 1) == 0) { 1125 size_t pos = growParamSize(param, sizeof(int), curSize, totSize); 1126 *(int *)((char *)param + pos) = atoi(node->value); 1127 ALOGV("readParamValue() reading int %d", *(int *)((char *)param + pos)); 1128 return sizeof(int); 1129 } else if (strncmp(node->name, FLOAT_TAG, sizeof(FLOAT_TAG) + 1) == 0) { 1130 size_t pos = growParamSize(param, sizeof(float), curSize, totSize); 1131 *(float *)((char *)param + pos) = (float)atof(node->value); 1132 ALOGV("readParamValue() reading float %f",*(float *)((char *)param + pos)); 1133 return sizeof(float); 1134 } else if (strncmp(node->name, BOOL_TAG, sizeof(BOOL_TAG) + 1) == 0) { 1135 size_t pos = growParamSize(param, sizeof(bool), curSize, totSize); 1136 if (strncmp(node->value, "false", strlen("false") + 1) == 0) { 1137 *(bool *)((char *)param + pos) = false; 1138 } else { 1139 *(bool *)((char *)param + pos) = true; 1140 } 1141 ALOGV("readParamValue() reading bool %s",*(bool *)((char *)param + pos) ? "true" : "false"); 1142 return sizeof(bool); 1143 } else if (strncmp(node->name, STRING_TAG, sizeof(STRING_TAG) + 1) == 0) { 1144 size_t len = strnlen(node->value, EFFECT_STRING_LEN_MAX); 1145 if (*curSize + len + 1 > *totSize) { 1146 *totSize = *curSize + len + 1; 1147 param = (char *)realloc(param, *totSize); 1148 } 1149 strncpy(param + *curSize, node->value, len); 1150 *curSize += len; 1151 param[*curSize] = '\0'; 1152 ALOGV("readParamValue() reading string %s", param + *curSize - len); 1153 return len; 1154 } 1155 ALOGW("readParamValue() unknown param type %s", node->name); 1156 return 0; 1157} 1158 1159effect_param_t *AudioPolicyService::loadEffectParameter(cnode *root) 1160{ 1161 cnode *param; 1162 cnode *value; 1163 size_t curSize = sizeof(effect_param_t); 1164 size_t totSize = sizeof(effect_param_t) + 2 * sizeof(int); 1165 effect_param_t *fx_param = (effect_param_t *)malloc(totSize); 1166 1167 param = config_find(root, PARAM_TAG); 1168 value = config_find(root, VALUE_TAG); 1169 if (param == NULL && value == NULL) { 1170 // try to parse simple parameter form {int int} 1171 param = root->first_child; 1172 if (param) { 1173 // Note: that a pair of random strings is read as 0 0 1174 int *ptr = (int *)fx_param->data; 1175 int *ptr2 = (int *)((char *)param + sizeof(effect_param_t)); 1176 ALOGW("loadEffectParameter() ptr %p ptr2 %p", ptr, ptr2); 1177 *ptr++ = atoi(param->name); 1178 *ptr = atoi(param->value); 1179 fx_param->psize = sizeof(int); 1180 fx_param->vsize = sizeof(int); 1181 return fx_param; 1182 } 1183 } 1184 if (param == NULL || value == NULL) { 1185 ALOGW("loadEffectParameter() invalid parameter description %s", root->name); 1186 goto error; 1187 } 1188 1189 fx_param->psize = 0; 1190 param = param->first_child; 1191 while (param) { 1192 ALOGV("loadEffectParameter() reading param of type %s", param->name); 1193 size_t size = readParamValue(param, (char *)fx_param, &curSize, &totSize); 1194 if (size == 0) { 1195 goto error; 1196 } 1197 fx_param->psize += size; 1198 param = param->next; 1199 } 1200 1201 // align start of value field on 32 bit boundary 1202 curSize = ((curSize - 1 ) / sizeof(int) + 1) * sizeof(int); 1203 1204 fx_param->vsize = 0; 1205 value = value->first_child; 1206 while (value) { 1207 ALOGV("loadEffectParameter() reading value of type %s", value->name); 1208 size_t size = readParamValue(value, (char *)fx_param, &curSize, &totSize); 1209 if (size == 0) { 1210 goto error; 1211 } 1212 fx_param->vsize += size; 1213 value = value->next; 1214 } 1215 1216 return fx_param; 1217 1218error: 1219 delete fx_param; 1220 return NULL; 1221} 1222 1223void AudioPolicyService::loadEffectParameters(cnode *root, Vector <effect_param_t *>& params) 1224{ 1225 cnode *node = root->first_child; 1226 while (node) { 1227 ALOGV("loadEffectParameters() loading param %s", node->name); 1228 effect_param_t *param = loadEffectParameter(node); 1229 if (param == NULL) { 1230 node = node->next; 1231 continue; 1232 } 1233 params.add(param); 1234 node = node->next; 1235 } 1236} 1237 1238AudioPolicyService::InputSourceDesc *AudioPolicyService::loadInputSource( 1239 cnode *root, 1240 const Vector <EffectDesc *>& effects) 1241{ 1242 cnode *node = root->first_child; 1243 if (node == NULL) { 1244 ALOGW("loadInputSource() empty element %s", root->name); 1245 return NULL; 1246 } 1247 InputSourceDesc *source = new InputSourceDesc(); 1248 while (node) { 1249 size_t i; 1250 for (i = 0; i < effects.size(); i++) { 1251 if (strncmp(effects[i]->mName, node->name, EFFECT_STRING_LEN_MAX) == 0) { 1252 ALOGV("loadInputSource() found effect %s in list", node->name); 1253 break; 1254 } 1255 } 1256 if (i == effects.size()) { 1257 ALOGV("loadInputSource() effect %s not in list", node->name); 1258 node = node->next; 1259 continue; 1260 } 1261 EffectDesc *effect = new EffectDesc(*effects[i]); 1262 loadEffectParameters(node, effect->mParams); 1263 ALOGV("loadInputSource() adding effect %s uuid %08x", effect->mName, effect->mUuid.timeLow); 1264 source->mEffects.add(effect); 1265 node = node->next; 1266 } 1267 if (source->mEffects.size() == 0) { 1268 ALOGW("loadInputSource() no valid effects found in source %s", root->name); 1269 delete source; 1270 return NULL; 1271 } 1272 return source; 1273} 1274 1275status_t AudioPolicyService::loadInputSources(cnode *root, const Vector <EffectDesc *>& effects) 1276{ 1277 cnode *node = config_find(root, PREPROCESSING_TAG); 1278 if (node == NULL) { 1279 return -ENOENT; 1280 } 1281 node = node->first_child; 1282 while (node) { 1283 audio_source_t source = inputSourceNameToEnum(node->name); 1284 if (source == AUDIO_SOURCE_CNT) { 1285 ALOGW("loadInputSources() invalid input source %s", node->name); 1286 node = node->next; 1287 continue; 1288 } 1289 ALOGV("loadInputSources() loading input source %s", node->name); 1290 InputSourceDesc *desc = loadInputSource(node, effects); 1291 if (desc == NULL) { 1292 node = node->next; 1293 continue; 1294 } 1295 mInputSources.add(source, desc); 1296 node = node->next; 1297 } 1298 return NO_ERROR; 1299} 1300 1301AudioPolicyService::EffectDesc *AudioPolicyService::loadEffect(cnode *root) 1302{ 1303 cnode *node = config_find(root, UUID_TAG); 1304 if (node == NULL) { 1305 return NULL; 1306 } 1307 effect_uuid_t uuid; 1308 if (AudioEffect::stringToGuid(node->value, &uuid) != NO_ERROR) { 1309 ALOGW("loadEffect() invalid uuid %s", node->value); 1310 return NULL; 1311 } 1312 EffectDesc *effect = new EffectDesc(); 1313 effect->mName = strdup(root->name); 1314 memcpy(&effect->mUuid, &uuid, sizeof(effect_uuid_t)); 1315 1316 return effect; 1317} 1318 1319status_t AudioPolicyService::loadEffects(cnode *root, Vector <EffectDesc *>& effects) 1320{ 1321 cnode *node = config_find(root, EFFECTS_TAG); 1322 if (node == NULL) { 1323 return -ENOENT; 1324 } 1325 node = node->first_child; 1326 while (node) { 1327 ALOGV("loadEffects() loading effect %s", node->name); 1328 EffectDesc *effect = loadEffect(node); 1329 if (effect == NULL) { 1330 node = node->next; 1331 continue; 1332 } 1333 effects.add(effect); 1334 node = node->next; 1335 } 1336 return NO_ERROR; 1337} 1338 1339status_t AudioPolicyService::loadPreProcessorConfig(const char *path) 1340{ 1341 cnode *root; 1342 char *data; 1343 1344 data = (char *)load_file(path, NULL); 1345 if (data == NULL) { 1346 return -ENODEV; 1347 } 1348 root = config_node("", ""); 1349 config_load(root, data); 1350 1351 Vector <EffectDesc *> effects; 1352 loadEffects(root, effects); 1353 loadInputSources(root, effects); 1354 1355 config_free(root); 1356 free(root); 1357 free(data); 1358 1359 return NO_ERROR; 1360} 1361 1362/* implementation of the interface to the policy manager */ 1363extern "C" { 1364 1365static audio_io_handle_t aps_open_output(void *service, 1366 uint32_t *pDevices, 1367 uint32_t *pSamplingRate, 1368 uint32_t *pFormat, 1369 uint32_t *pChannels, 1370 uint32_t *pLatencyMs, 1371 audio_policy_output_flags_t flags) 1372{ 1373 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1374 if (af == NULL) { 1375 ALOGW("%s: could not get AudioFlinger", __func__); 1376 return 0; 1377 } 1378 1379 return af->openOutput(pDevices, pSamplingRate, pFormat, pChannels, 1380 pLatencyMs, flags); 1381} 1382 1383static audio_io_handle_t aps_open_dup_output(void *service, 1384 audio_io_handle_t output1, 1385 audio_io_handle_t output2) 1386{ 1387 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1388 if (af == NULL) { 1389 ALOGW("%s: could not get AudioFlinger", __func__); 1390 return 0; 1391 } 1392 return af->openDuplicateOutput(output1, output2); 1393} 1394 1395static int aps_close_output(void *service, audio_io_handle_t output) 1396{ 1397 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1398 if (af == NULL) 1399 return PERMISSION_DENIED; 1400 1401 return af->closeOutput(output); 1402} 1403 1404static int aps_suspend_output(void *service, audio_io_handle_t output) 1405{ 1406 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1407 if (af == NULL) { 1408 ALOGW("%s: could not get AudioFlinger", __func__); 1409 return PERMISSION_DENIED; 1410 } 1411 1412 return af->suspendOutput(output); 1413} 1414 1415static int aps_restore_output(void *service, audio_io_handle_t output) 1416{ 1417 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1418 if (af == NULL) { 1419 ALOGW("%s: could not get AudioFlinger", __func__); 1420 return PERMISSION_DENIED; 1421 } 1422 1423 return af->restoreOutput(output); 1424} 1425 1426static audio_io_handle_t aps_open_input(void *service, 1427 uint32_t *pDevices, 1428 uint32_t *pSamplingRate, 1429 uint32_t *pFormat, 1430 uint32_t *pChannels, 1431 uint32_t acoustics) 1432{ 1433 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1434 if (af == NULL) { 1435 ALOGW("%s: could not get AudioFlinger", __func__); 1436 return 0; 1437 } 1438 1439 return af->openInput(pDevices, pSamplingRate, pFormat, pChannels, 1440 acoustics); 1441} 1442 1443static int aps_close_input(void *service, audio_io_handle_t input) 1444{ 1445 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1446 if (af == NULL) 1447 return PERMISSION_DENIED; 1448 1449 return af->closeInput(input); 1450} 1451 1452static int aps_set_stream_output(void *service, audio_stream_type_t stream, 1453 audio_io_handle_t output) 1454{ 1455 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1456 if (af == NULL) 1457 return PERMISSION_DENIED; 1458 1459 return af->setStreamOutput(stream, output); 1460} 1461 1462static int aps_move_effects(void *service, int session, 1463 audio_io_handle_t src_output, 1464 audio_io_handle_t dst_output) 1465{ 1466 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 1467 if (af == NULL) 1468 return PERMISSION_DENIED; 1469 1470 return af->moveEffects(session, (int)src_output, (int)dst_output); 1471} 1472 1473static char * aps_get_parameters(void *service, audio_io_handle_t io_handle, 1474 const char *keys) 1475{ 1476 String8 result = AudioSystem::getParameters(io_handle, String8(keys)); 1477 return strdup(result.string()); 1478} 1479 1480static void aps_set_parameters(void *service, audio_io_handle_t io_handle, 1481 const char *kv_pairs, int delay_ms) 1482{ 1483 AudioPolicyService *audioPolicyService = (AudioPolicyService *)service; 1484 1485 audioPolicyService->setParameters(io_handle, kv_pairs, delay_ms); 1486} 1487 1488static int aps_set_stream_volume(void *service, audio_stream_type_t stream, 1489 float volume, audio_io_handle_t output, 1490 int delay_ms) 1491{ 1492 AudioPolicyService *audioPolicyService = (AudioPolicyService *)service; 1493 1494 return audioPolicyService->setStreamVolume(stream, volume, output, 1495 delay_ms); 1496} 1497 1498static int aps_start_tone(void *service, audio_policy_tone_t tone, 1499 audio_stream_type_t stream) 1500{ 1501 AudioPolicyService *audioPolicyService = (AudioPolicyService *)service; 1502 1503 return audioPolicyService->startTone(tone, stream); 1504} 1505 1506static int aps_stop_tone(void *service) 1507{ 1508 AudioPolicyService *audioPolicyService = (AudioPolicyService *)service; 1509 1510 return audioPolicyService->stopTone(); 1511} 1512 1513static int aps_set_voice_volume(void *service, float volume, int delay_ms) 1514{ 1515 AudioPolicyService *audioPolicyService = (AudioPolicyService *)service; 1516 1517 return audioPolicyService->setVoiceVolume(volume, delay_ms); 1518} 1519 1520}; // extern "C" 1521 1522namespace { 1523 struct audio_policy_service_ops aps_ops = { 1524 open_output : aps_open_output, 1525 open_duplicate_output : aps_open_dup_output, 1526 close_output : aps_close_output, 1527 suspend_output : aps_suspend_output, 1528 restore_output : aps_restore_output, 1529 open_input : aps_open_input, 1530 close_input : aps_close_input, 1531 set_stream_volume : aps_set_stream_volume, 1532 set_stream_output : aps_set_stream_output, 1533 set_parameters : aps_set_parameters, 1534 get_parameters : aps_get_parameters, 1535 start_tone : aps_start_tone, 1536 stop_tone : aps_stop_tone, 1537 set_voice_volume : aps_set_voice_volume, 1538 move_effects : aps_move_effects, 1539 }; 1540}; // namespace <unnamed> 1541 1542}; // namespace android 1543