AudioPolicyService.cpp revision 65ab47156e1c7dfcd8cc4266253a5ff30219e7f0
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 <hardware_legacy/AudioPolicyManagerBase.h> 34#include <cutils/properties.h> 35#include <dlfcn.h> 36#include <hardware_legacy/power.h> 37 38// ---------------------------------------------------------------------------- 39// the sim build doesn't have gettid 40 41#ifndef HAVE_GETTID 42# define gettid getpid 43#endif 44 45namespace android { 46 47 48static const char *kDeadlockedString = "AudioPolicyService may be deadlocked\n"; 49static const char *kCmdDeadlockedString = "AudioPolicyService command thread may be deadlocked\n"; 50 51static const int kDumpLockRetries = 50; 52static const int kDumpLockSleep = 20000; 53 54static bool checkPermission() { 55#ifndef HAVE_ANDROID_OS 56 return true; 57#endif 58 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 59 bool ok = checkCallingPermission(String16("android.permission.MODIFY_AUDIO_SETTINGS")); 60 if (!ok) LOGE("Request requires android.permission.MODIFY_AUDIO_SETTINGS"); 61 return ok; 62} 63 64// ---------------------------------------------------------------------------- 65 66AudioPolicyService::AudioPolicyService() 67 : BnAudioPolicyService() , mpPolicyManager(NULL) 68{ 69 char value[PROPERTY_VALUE_MAX]; 70 71 // start tone playback thread 72 mTonePlaybackThread = new AudioCommandThread(String8("")); 73 // start audio commands thread 74 mAudioCommandThread = new AudioCommandThread(String8("ApmCommandThread")); 75 76#if (defined GENERIC_AUDIO) || (defined AUDIO_POLICY_TEST) 77 mpPolicyManager = new AudioPolicyManagerBase(this); 78 LOGV("build for GENERIC_AUDIO - using generic audio policy"); 79#else 80 // if running in emulation - use the emulator driver 81 if (property_get("ro.kernel.qemu", value, 0)) { 82 LOGV("Running in emulation - using generic audio policy"); 83 mpPolicyManager = new AudioPolicyManagerBase(this); 84 } 85 else { 86 LOGV("Using hardware specific audio policy"); 87 mpPolicyManager = createAudioPolicyManager(this); 88 } 89#endif 90 91 // load properties 92 property_get("ro.camera.sound.forced", value, "0"); 93 mpPolicyManager->setSystemProperty("ro.camera.sound.forced", value); 94} 95 96AudioPolicyService::~AudioPolicyService() 97{ 98 mTonePlaybackThread->exit(); 99 mTonePlaybackThread.clear(); 100 mAudioCommandThread->exit(); 101 mAudioCommandThread.clear(); 102 103 if (mpPolicyManager) { 104 delete mpPolicyManager; 105 } 106} 107 108 109status_t AudioPolicyService::setDeviceConnectionState(AudioSystem::audio_devices device, 110 AudioSystem::device_connection_state state, 111 const char *device_address) 112{ 113 if (mpPolicyManager == NULL) { 114 return NO_INIT; 115 } 116 if (!checkPermission()) { 117 return PERMISSION_DENIED; 118 } 119 if (!AudioSystem::isOutputDevice(device) && !AudioSystem::isInputDevice(device)) { 120 return BAD_VALUE; 121 } 122 if (state != AudioSystem::DEVICE_STATE_AVAILABLE && state != AudioSystem::DEVICE_STATE_UNAVAILABLE) { 123 return BAD_VALUE; 124 } 125 126 LOGV("setDeviceConnectionState() tid %d", gettid()); 127 Mutex::Autolock _l(mLock); 128 return mpPolicyManager->setDeviceConnectionState(device, state, device_address); 129} 130 131AudioSystem::device_connection_state AudioPolicyService::getDeviceConnectionState(AudioSystem::audio_devices device, 132 const char *device_address) 133{ 134 if (mpPolicyManager == NULL) { 135 return AudioSystem::DEVICE_STATE_UNAVAILABLE; 136 } 137 if (!checkPermission()) { 138 return AudioSystem::DEVICE_STATE_UNAVAILABLE; 139 } 140 return mpPolicyManager->getDeviceConnectionState(device, device_address); 141} 142 143status_t AudioPolicyService::setPhoneState(int state) 144{ 145 if (mpPolicyManager == NULL) { 146 return NO_INIT; 147 } 148 if (!checkPermission()) { 149 return PERMISSION_DENIED; 150 } 151 if (state < 0 || state >= AudioSystem::NUM_MODES) { 152 return BAD_VALUE; 153 } 154 155 LOGV("setPhoneState() tid %d", gettid()); 156 157 // TODO: check if it is more appropriate to do it in platform specific policy manager 158 AudioSystem::setMode(state); 159 160 Mutex::Autolock _l(mLock); 161 mpPolicyManager->setPhoneState(state); 162 return NO_ERROR; 163} 164 165status_t AudioPolicyService::setRingerMode(uint32_t mode, uint32_t mask) 166{ 167 if (mpPolicyManager == NULL) { 168 return NO_INIT; 169 } 170 if (!checkPermission()) { 171 return PERMISSION_DENIED; 172 } 173 174 mpPolicyManager->setRingerMode(mode, mask); 175 return NO_ERROR; 176} 177 178status_t AudioPolicyService::setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config) 179{ 180 if (mpPolicyManager == NULL) { 181 return NO_INIT; 182 } 183 if (!checkPermission()) { 184 return PERMISSION_DENIED; 185 } 186 if (usage < 0 || usage >= AudioSystem::NUM_FORCE_USE) { 187 return BAD_VALUE; 188 } 189 if (config < 0 || config >= AudioSystem::NUM_FORCE_CONFIG) { 190 return BAD_VALUE; 191 } 192 LOGV("setForceUse() tid %d", gettid()); 193 Mutex::Autolock _l(mLock); 194 mpPolicyManager->setForceUse(usage, config); 195 return NO_ERROR; 196} 197 198AudioSystem::forced_config AudioPolicyService::getForceUse(AudioSystem::force_use usage) 199{ 200 if (mpPolicyManager == NULL) { 201 return AudioSystem::FORCE_NONE; 202 } 203 if (!checkPermission()) { 204 return AudioSystem::FORCE_NONE; 205 } 206 if (usage < 0 || usage >= AudioSystem::NUM_FORCE_USE) { 207 return AudioSystem::FORCE_NONE; 208 } 209 return mpPolicyManager->getForceUse(usage); 210} 211 212audio_io_handle_t AudioPolicyService::getOutput(AudioSystem::stream_type stream, 213 uint32_t samplingRate, 214 uint32_t format, 215 uint32_t channels, 216 AudioSystem::output_flags flags) 217{ 218 if (mpPolicyManager == NULL) { 219 return 0; 220 } 221 LOGV("getOutput() tid %d", gettid()); 222 Mutex::Autolock _l(mLock); 223 return mpPolicyManager->getOutput(stream, samplingRate, format, channels, flags); 224} 225 226status_t AudioPolicyService::startOutput(audio_io_handle_t output, AudioSystem::stream_type stream) 227{ 228 if (mpPolicyManager == NULL) { 229 return NO_INIT; 230 } 231 LOGV("startOutput() tid %d", gettid()); 232 Mutex::Autolock _l(mLock); 233 return mpPolicyManager->startOutput(output, stream); 234} 235 236status_t AudioPolicyService::stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream) 237{ 238 if (mpPolicyManager == NULL) { 239 return NO_INIT; 240 } 241 LOGV("stopOutput() tid %d", gettid()); 242 Mutex::Autolock _l(mLock); 243 return mpPolicyManager->stopOutput(output, stream); 244} 245 246void AudioPolicyService::releaseOutput(audio_io_handle_t output) 247{ 248 if (mpPolicyManager == NULL) { 249 return; 250 } 251 LOGV("releaseOutput() tid %d", gettid()); 252 Mutex::Autolock _l(mLock); 253 mpPolicyManager->releaseOutput(output); 254} 255 256audio_io_handle_t AudioPolicyService::getInput(int inputSource, 257 uint32_t samplingRate, 258 uint32_t format, 259 uint32_t channels, 260 AudioSystem::audio_in_acoustics acoustics) 261{ 262 if (mpPolicyManager == NULL) { 263 return 0; 264 } 265 Mutex::Autolock _l(mLock); 266 return mpPolicyManager->getInput(inputSource, samplingRate, format, channels, acoustics); 267} 268 269status_t AudioPolicyService::startInput(audio_io_handle_t input) 270{ 271 if (mpPolicyManager == NULL) { 272 return NO_INIT; 273 } 274 Mutex::Autolock _l(mLock); 275 return mpPolicyManager->startInput(input); 276} 277 278status_t AudioPolicyService::stopInput(audio_io_handle_t input) 279{ 280 if (mpPolicyManager == NULL) { 281 return NO_INIT; 282 } 283 Mutex::Autolock _l(mLock); 284 return mpPolicyManager->stopInput(input); 285} 286 287void AudioPolicyService::releaseInput(audio_io_handle_t input) 288{ 289 if (mpPolicyManager == NULL) { 290 return; 291 } 292 Mutex::Autolock _l(mLock); 293 mpPolicyManager->releaseInput(input); 294} 295 296status_t AudioPolicyService::initStreamVolume(AudioSystem::stream_type stream, 297 int indexMin, 298 int indexMax) 299{ 300 if (mpPolicyManager == NULL) { 301 return NO_INIT; 302 } 303 if (!checkPermission()) { 304 return PERMISSION_DENIED; 305 } 306 if (stream < 0 || stream >= AudioSystem::NUM_STREAM_TYPES) { 307 return BAD_VALUE; 308 } 309 mpPolicyManager->initStreamVolume(stream, indexMin, indexMax); 310 return NO_ERROR; 311} 312 313status_t AudioPolicyService::setStreamVolumeIndex(AudioSystem::stream_type stream, int index) 314{ 315 if (mpPolicyManager == NULL) { 316 return NO_INIT; 317 } 318 if (!checkPermission()) { 319 return PERMISSION_DENIED; 320 } 321 if (stream < 0 || stream >= AudioSystem::NUM_STREAM_TYPES) { 322 return BAD_VALUE; 323 } 324 325 return mpPolicyManager->setStreamVolumeIndex(stream, index); 326} 327 328status_t AudioPolicyService::getStreamVolumeIndex(AudioSystem::stream_type stream, int *index) 329{ 330 if (mpPolicyManager == NULL) { 331 return NO_INIT; 332 } 333 if (!checkPermission()) { 334 return PERMISSION_DENIED; 335 } 336 if (stream < 0 || stream >= AudioSystem::NUM_STREAM_TYPES) { 337 return BAD_VALUE; 338 } 339 return mpPolicyManager->getStreamVolumeIndex(stream, index); 340} 341 342void AudioPolicyService::binderDied(const wp<IBinder>& who) { 343 LOGW("binderDied() %p, tid %d, calling tid %d", who.unsafe_get(), gettid(), IPCThreadState::self()->getCallingPid()); 344} 345 346static bool tryLock(Mutex& mutex) 347{ 348 bool locked = false; 349 for (int i = 0; i < kDumpLockRetries; ++i) { 350 if (mutex.tryLock() == NO_ERROR) { 351 locked = true; 352 break; 353 } 354 usleep(kDumpLockSleep); 355 } 356 return locked; 357} 358 359status_t AudioPolicyService::dumpInternals(int fd) 360{ 361 const size_t SIZE = 256; 362 char buffer[SIZE]; 363 String8 result; 364 365 snprintf(buffer, SIZE, "PolicyManager Interface: %p\n", mpPolicyManager); 366 result.append(buffer); 367 snprintf(buffer, SIZE, "Command Thread: %p\n", mAudioCommandThread.get()); 368 result.append(buffer); 369 snprintf(buffer, SIZE, "Tones Thread: %p\n", mTonePlaybackThread.get()); 370 result.append(buffer); 371 372 write(fd, result.string(), result.size()); 373 return NO_ERROR; 374} 375 376status_t AudioPolicyService::dump(int fd, const Vector<String16>& args) 377{ 378 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 379 dumpPermissionDenial(fd); 380 } else { 381 bool locked = tryLock(mLock); 382 if (!locked) { 383 String8 result(kDeadlockedString); 384 write(fd, result.string(), result.size()); 385 } 386 387 dumpInternals(fd); 388 if (mAudioCommandThread != NULL) { 389 mAudioCommandThread->dump(fd); 390 } 391 if (mTonePlaybackThread != NULL) { 392 mTonePlaybackThread->dump(fd); 393 } 394 395 if (mpPolicyManager) { 396 mpPolicyManager->dump(fd); 397 } 398 399 if (locked) mLock.unlock(); 400 } 401 return NO_ERROR; 402} 403 404status_t AudioPolicyService::dumpPermissionDenial(int fd) 405{ 406 const size_t SIZE = 256; 407 char buffer[SIZE]; 408 String8 result; 409 snprintf(buffer, SIZE, "Permission Denial: " 410 "can't dump AudioPolicyService from pid=%d, uid=%d\n", 411 IPCThreadState::self()->getCallingPid(), 412 IPCThreadState::self()->getCallingUid()); 413 result.append(buffer); 414 write(fd, result.string(), result.size()); 415 return NO_ERROR; 416} 417 418status_t AudioPolicyService::onTransact( 419 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 420{ 421 return BnAudioPolicyService::onTransact(code, data, reply, flags); 422} 423 424 425// ---------------------------------------------------------------------------- 426void AudioPolicyService::instantiate() { 427 defaultServiceManager()->addService( 428 String16("media.audio_policy"), new AudioPolicyService()); 429} 430 431 432// ---------------------------------------------------------------------------- 433// AudioPolicyClientInterface implementation 434// ---------------------------------------------------------------------------- 435 436 437audio_io_handle_t AudioPolicyService::openOutput(uint32_t *pDevices, 438 uint32_t *pSamplingRate, 439 uint32_t *pFormat, 440 uint32_t *pChannels, 441 uint32_t *pLatencyMs, 442 AudioSystem::output_flags flags) 443{ 444 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 445 if (af == 0) { 446 LOGW("openOutput() could not get AudioFlinger"); 447 return 0; 448 } 449 450 return af->openOutput(pDevices, pSamplingRate, (uint32_t *)pFormat, pChannels, pLatencyMs, flags); 451} 452 453audio_io_handle_t AudioPolicyService::openDuplicateOutput(audio_io_handle_t output1, audio_io_handle_t output2) 454{ 455 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 456 if (af == 0) { 457 LOGW("openDuplicateOutput() could not get AudioFlinger"); 458 return 0; 459 } 460 return af->openDuplicateOutput(output1, output2); 461} 462 463status_t AudioPolicyService::closeOutput(audio_io_handle_t output) 464{ 465 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 466 if (af == 0) return PERMISSION_DENIED; 467 468 return af->closeOutput(output); 469} 470 471 472status_t AudioPolicyService::suspendOutput(audio_io_handle_t output) 473{ 474 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 475 if (af == 0) { 476 LOGW("suspendOutput() could not get AudioFlinger"); 477 return PERMISSION_DENIED; 478 } 479 480 return af->suspendOutput(output); 481} 482 483status_t AudioPolicyService::restoreOutput(audio_io_handle_t output) 484{ 485 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 486 if (af == 0) { 487 LOGW("restoreOutput() could not get AudioFlinger"); 488 return PERMISSION_DENIED; 489 } 490 491 return af->restoreOutput(output); 492} 493 494audio_io_handle_t AudioPolicyService::openInput(uint32_t *pDevices, 495 uint32_t *pSamplingRate, 496 uint32_t *pFormat, 497 uint32_t *pChannels, 498 uint32_t acoustics) 499{ 500 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 501 if (af == 0) { 502 LOGW("openInput() could not get AudioFlinger"); 503 return 0; 504 } 505 506 return af->openInput(pDevices, pSamplingRate, (uint32_t *)pFormat, pChannels, acoustics); 507} 508 509status_t AudioPolicyService::closeInput(audio_io_handle_t input) 510{ 511 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 512 if (af == 0) return PERMISSION_DENIED; 513 514 return af->closeInput(input); 515} 516 517status_t AudioPolicyService::setStreamVolume(AudioSystem::stream_type stream, float volume, audio_io_handle_t output, int delayMs) 518{ 519 return mAudioCommandThread->volumeCommand((int)stream, volume, (int)output, delayMs); 520} 521 522status_t AudioPolicyService::setStreamOutput(AudioSystem::stream_type stream, audio_io_handle_t output) 523{ 524 sp<IAudioFlinger> af = AudioSystem::get_audio_flinger(); 525 if (af == 0) return PERMISSION_DENIED; 526 527 return af->setStreamOutput(stream, output); 528} 529 530 531void AudioPolicyService::setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs, int delayMs) 532{ 533 mAudioCommandThread->parametersCommand((int)ioHandle, keyValuePairs, delayMs); 534} 535 536String8 AudioPolicyService::getParameters(audio_io_handle_t ioHandle, const String8& keys) 537{ 538 String8 result = AudioSystem::getParameters(ioHandle, keys); 539 return result; 540} 541 542status_t AudioPolicyService::startTone(ToneGenerator::tone_type tone, AudioSystem::stream_type stream) 543{ 544 mTonePlaybackThread->startToneCommand(tone, stream); 545 return NO_ERROR; 546} 547 548status_t AudioPolicyService::stopTone() 549{ 550 mTonePlaybackThread->stopToneCommand(); 551 return NO_ERROR; 552} 553 554status_t AudioPolicyService::setVoiceVolume(float volume, int delayMs) 555{ 556 return mAudioCommandThread->voiceVolumeCommand(volume, delayMs); 557} 558 559// ----------- AudioPolicyService::AudioCommandThread implementation ---------- 560 561AudioPolicyService::AudioCommandThread::AudioCommandThread(String8 name) 562 : Thread(false), mName(name) 563{ 564 mpToneGenerator = NULL; 565} 566 567 568AudioPolicyService::AudioCommandThread::~AudioCommandThread() 569{ 570 if (mName != "" && !mAudioCommands.isEmpty()) { 571 release_wake_lock(mName.string()); 572 } 573 mAudioCommands.clear(); 574 if (mpToneGenerator != NULL) delete mpToneGenerator; 575} 576 577void AudioPolicyService::AudioCommandThread::onFirstRef() 578{ 579 if (mName != "") { 580 run(mName.string(), ANDROID_PRIORITY_AUDIO); 581 } else { 582 run("AudioCommandThread", ANDROID_PRIORITY_AUDIO); 583 } 584} 585 586bool AudioPolicyService::AudioCommandThread::threadLoop() 587{ 588 nsecs_t waitTime = INT64_MAX; 589 590 mLock.lock(); 591 while (!exitPending()) 592 { 593 while(!mAudioCommands.isEmpty()) { 594 nsecs_t curTime = systemTime(); 595 // commands are sorted by increasing time stamp: execute them from index 0 and up 596 if (mAudioCommands[0]->mTime <= curTime) { 597 AudioCommand *command = mAudioCommands[0]; 598 mAudioCommands.removeAt(0); 599 mLastCommand = *command; 600 601 switch (command->mCommand) { 602 case START_TONE: { 603 mLock.unlock(); 604 ToneData *data = (ToneData *)command->mParam; 605 LOGV("AudioCommandThread() processing start tone %d on stream %d", 606 data->mType, data->mStream); 607 if (mpToneGenerator != NULL) 608 delete mpToneGenerator; 609 mpToneGenerator = new ToneGenerator(data->mStream, 1.0); 610 mpToneGenerator->startTone(data->mType); 611 delete data; 612 mLock.lock(); 613 }break; 614 case STOP_TONE: { 615 mLock.unlock(); 616 LOGV("AudioCommandThread() processing stop tone"); 617 if (mpToneGenerator != NULL) { 618 mpToneGenerator->stopTone(); 619 delete mpToneGenerator; 620 mpToneGenerator = NULL; 621 } 622 mLock.lock(); 623 }break; 624 case SET_VOLUME: { 625 VolumeData *data = (VolumeData *)command->mParam; 626 LOGV("AudioCommandThread() processing set volume stream %d, volume %f, output %d", data->mStream, data->mVolume, data->mIO); 627 command->mStatus = AudioSystem::setStreamVolume(data->mStream, data->mVolume, data->mIO); 628 if (command->mWaitStatus) { 629 command->mCond.signal(); 630 mWaitWorkCV.wait(mLock); 631 } 632 delete data; 633 }break; 634 case SET_PARAMETERS: { 635 ParametersData *data = (ParametersData *)command->mParam; 636 LOGV("AudioCommandThread() processing set parameters string %s, io %d", data->mKeyValuePairs.string(), data->mIO); 637 command->mStatus = AudioSystem::setParameters(data->mIO, data->mKeyValuePairs); 638 if (command->mWaitStatus) { 639 command->mCond.signal(); 640 mWaitWorkCV.wait(mLock); 641 } 642 delete data; 643 }break; 644 case SET_VOICE_VOLUME: { 645 VoiceVolumeData *data = (VoiceVolumeData *)command->mParam; 646 LOGV("AudioCommandThread() processing set voice volume volume %f", data->mVolume); 647 command->mStatus = AudioSystem::setVoiceVolume(data->mVolume); 648 if (command->mWaitStatus) { 649 command->mCond.signal(); 650 mWaitWorkCV.wait(mLock); 651 } 652 delete data; 653 }break; 654 default: 655 LOGW("AudioCommandThread() unknown command %d", command->mCommand); 656 } 657 delete command; 658 waitTime = INT64_MAX; 659 } else { 660 waitTime = mAudioCommands[0]->mTime - curTime; 661 break; 662 } 663 } 664 // release delayed commands wake lock 665 if (mName != "" && mAudioCommands.isEmpty()) { 666 release_wake_lock(mName.string()); 667 } 668 LOGV("AudioCommandThread() going to sleep"); 669 mWaitWorkCV.waitRelative(mLock, waitTime); 670 LOGV("AudioCommandThread() waking up"); 671 } 672 mLock.unlock(); 673 return false; 674} 675 676status_t AudioPolicyService::AudioCommandThread::dump(int fd) 677{ 678 const size_t SIZE = 256; 679 char buffer[SIZE]; 680 String8 result; 681 682 snprintf(buffer, SIZE, "AudioCommandThread %p Dump\n", this); 683 result.append(buffer); 684 write(fd, result.string(), result.size()); 685 686 bool locked = tryLock(mLock); 687 if (!locked) { 688 String8 result2(kCmdDeadlockedString); 689 write(fd, result2.string(), result2.size()); 690 } 691 692 snprintf(buffer, SIZE, "- Commands:\n"); 693 result = String8(buffer); 694 result.append(" Command Time Wait pParam\n"); 695 for (int i = 0; i < (int)mAudioCommands.size(); i++) { 696 mAudioCommands[i]->dump(buffer, SIZE); 697 result.append(buffer); 698 } 699 result.append(" Last Command\n"); 700 mLastCommand.dump(buffer, SIZE); 701 result.append(buffer); 702 703 write(fd, result.string(), result.size()); 704 705 if (locked) mLock.unlock(); 706 707 return NO_ERROR; 708} 709 710void AudioPolicyService::AudioCommandThread::startToneCommand(int type, int stream) 711{ 712 AudioCommand *command = new AudioCommand(); 713 command->mCommand = START_TONE; 714 ToneData *data = new ToneData(); 715 data->mType = type; 716 data->mStream = stream; 717 command->mParam = (void *)data; 718 command->mWaitStatus = false; 719 Mutex::Autolock _l(mLock); 720 insertCommand_l(command); 721 LOGV("AudioCommandThread() adding tone start type %d, stream %d", type, stream); 722 mWaitWorkCV.signal(); 723} 724 725void AudioPolicyService::AudioCommandThread::stopToneCommand() 726{ 727 AudioCommand *command = new AudioCommand(); 728 command->mCommand = STOP_TONE; 729 command->mParam = NULL; 730 command->mWaitStatus = false; 731 Mutex::Autolock _l(mLock); 732 insertCommand_l(command); 733 LOGV("AudioCommandThread() adding tone stop"); 734 mWaitWorkCV.signal(); 735} 736 737status_t AudioPolicyService::AudioCommandThread::volumeCommand(int stream, float volume, int output, int delayMs) 738{ 739 status_t status = NO_ERROR; 740 741 AudioCommand *command = new AudioCommand(); 742 command->mCommand = SET_VOLUME; 743 VolumeData *data = new VolumeData(); 744 data->mStream = stream; 745 data->mVolume = volume; 746 data->mIO = output; 747 command->mParam = data; 748 if (delayMs == 0) { 749 command->mWaitStatus = true; 750 } else { 751 command->mWaitStatus = false; 752 } 753 Mutex::Autolock _l(mLock); 754 insertCommand_l(command, delayMs); 755 LOGV("AudioCommandThread() adding set volume stream %d, volume %f, output %d", stream, volume, output); 756 mWaitWorkCV.signal(); 757 if (command->mWaitStatus) { 758 command->mCond.wait(mLock); 759 status = command->mStatus; 760 mWaitWorkCV.signal(); 761 } 762 return status; 763} 764 765status_t AudioPolicyService::AudioCommandThread::parametersCommand(int ioHandle, const String8& keyValuePairs, int delayMs) 766{ 767 status_t status = NO_ERROR; 768 769 AudioCommand *command = new AudioCommand(); 770 command->mCommand = SET_PARAMETERS; 771 ParametersData *data = new ParametersData(); 772 data->mIO = ioHandle; 773 data->mKeyValuePairs = keyValuePairs; 774 command->mParam = data; 775 if (delayMs == 0) { 776 command->mWaitStatus = true; 777 } else { 778 command->mWaitStatus = false; 779 } 780 Mutex::Autolock _l(mLock); 781 insertCommand_l(command, delayMs); 782 LOGV("AudioCommandThread() adding set parameter string %s, io %d ,delay %d", keyValuePairs.string(), ioHandle, delayMs); 783 mWaitWorkCV.signal(); 784 if (command->mWaitStatus) { 785 command->mCond.wait(mLock); 786 status = command->mStatus; 787 mWaitWorkCV.signal(); 788 } 789 return status; 790} 791 792status_t AudioPolicyService::AudioCommandThread::voiceVolumeCommand(float volume, int delayMs) 793{ 794 status_t status = NO_ERROR; 795 796 AudioCommand *command = new AudioCommand(); 797 command->mCommand = SET_VOICE_VOLUME; 798 VoiceVolumeData *data = new VoiceVolumeData(); 799 data->mVolume = volume; 800 command->mParam = data; 801 if (delayMs == 0) { 802 command->mWaitStatus = true; 803 } else { 804 command->mWaitStatus = false; 805 } 806 Mutex::Autolock _l(mLock); 807 insertCommand_l(command, delayMs); 808 LOGV("AudioCommandThread() adding set voice volume volume %f", volume); 809 mWaitWorkCV.signal(); 810 if (command->mWaitStatus) { 811 command->mCond.wait(mLock); 812 status = command->mStatus; 813 mWaitWorkCV.signal(); 814 } 815 return status; 816} 817 818// insertCommand_l() must be called with mLock held 819void AudioPolicyService::AudioCommandThread::insertCommand_l(AudioCommand *command, int delayMs) 820{ 821 ssize_t i; 822 Vector <AudioCommand *> removedCommands; 823 824 command->mTime = systemTime() + milliseconds(delayMs); 825 826 // acquire wake lock to make sure delayed commands are processed 827 if (mName != "" && mAudioCommands.isEmpty()) { 828 acquire_wake_lock(PARTIAL_WAKE_LOCK, mName.string()); 829 } 830 831 // check same pending commands with later time stamps and eliminate them 832 for (i = mAudioCommands.size()-1; i >= 0; i--) { 833 AudioCommand *command2 = mAudioCommands[i]; 834 // commands are sorted by increasing time stamp: no need to scan the rest of mAudioCommands 835 if (command2->mTime <= command->mTime) break; 836 if (command2->mCommand != command->mCommand) continue; 837 838 switch (command->mCommand) { 839 case SET_PARAMETERS: { 840 ParametersData *data = (ParametersData *)command->mParam; 841 ParametersData *data2 = (ParametersData *)command2->mParam; 842 if (data->mIO != data2->mIO) break; 843 LOGV("Comparing parameter command %s to new command %s", data2->mKeyValuePairs.string(), data->mKeyValuePairs.string()); 844 AudioParameter param = AudioParameter(data->mKeyValuePairs); 845 AudioParameter param2 = AudioParameter(data2->mKeyValuePairs); 846 for (size_t j = 0; j < param.size(); j++) { 847 String8 key; 848 String8 value; 849 param.getAt(j, key, value); 850 for (size_t k = 0; k < param2.size(); k++) { 851 String8 key2; 852 String8 value2; 853 param2.getAt(k, key2, value2); 854 if (key2 == key) { 855 param2.remove(key2); 856 LOGV("Filtering out parameter %s", key2.string()); 857 break; 858 } 859 } 860 } 861 // if all keys have been filtered out, remove the command. 862 // otherwise, update the key value pairs 863 if (param2.size() == 0) { 864 removedCommands.add(command2); 865 } else { 866 data2->mKeyValuePairs = param2.toString(); 867 } 868 } break; 869 870 case SET_VOLUME: { 871 VolumeData *data = (VolumeData *)command->mParam; 872 VolumeData *data2 = (VolumeData *)command2->mParam; 873 if (data->mIO != data2->mIO) break; 874 if (data->mStream != data2->mStream) break; 875 LOGV("Filtering out volume command on output %d for stream %d", data->mIO, data->mStream); 876 removedCommands.add(command2); 877 } break; 878 case START_TONE: 879 case STOP_TONE: 880 default: 881 break; 882 } 883 } 884 885 // remove filtered commands 886 for (size_t j = 0; j < removedCommands.size(); j++) { 887 // removed commands always have time stamps greater than current command 888 for (size_t k = i + 1; k < mAudioCommands.size(); k++) { 889 if (mAudioCommands[k] == removedCommands[j]) { 890 LOGV("suppressing command: %d", mAudioCommands[k]->mCommand); 891 mAudioCommands.removeAt(k); 892 break; 893 } 894 } 895 } 896 removedCommands.clear(); 897 898 // insert command at the right place according to its time stamp 899 LOGV("inserting command: %d at index %d, num commands %d", command->mCommand, (int)i+1, mAudioCommands.size()); 900 mAudioCommands.insertAt(command, i + 1); 901} 902 903void AudioPolicyService::AudioCommandThread::exit() 904{ 905 LOGV("AudioCommandThread::exit"); 906 { 907 AutoMutex _l(mLock); 908 requestExit(); 909 mWaitWorkCV.signal(); 910 } 911 requestExitAndWait(); 912} 913 914void AudioPolicyService::AudioCommandThread::AudioCommand::dump(char* buffer, size_t size) 915{ 916 snprintf(buffer, size, " %02d %06d.%03d %01u %p\n", 917 mCommand, 918 (int)ns2s(mTime), 919 (int)ns2ms(mTime)%1000, 920 mWaitStatus, 921 mParam); 922} 923 924}; // namespace android 925