AudioFlinger.cpp revision 33797ea64d067dfeaacbfd7ebe7f3383b73961b5
1/* //device/include/server/AudioFlinger/AudioFlinger.cpp 2** 3** Copyright 2007, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18 19#define LOG_TAG "AudioFlinger" 20//#define LOG_NDEBUG 0 21 22#include <math.h> 23#include <signal.h> 24#include <sys/time.h> 25#include <sys/resource.h> 26 27#include <binder/IPCThreadState.h> 28#include <binder/IServiceManager.h> 29#include <utils/Log.h> 30#include <binder/Parcel.h> 31#include <binder/IPCThreadState.h> 32#include <utils/String16.h> 33#include <utils/threads.h> 34 35#include <cutils/properties.h> 36 37#include <media/AudioTrack.h> 38#include <media/AudioRecord.h> 39#include <media/IMediaPlayerService.h> 40 41#include <private/media/AudioTrackShared.h> 42#include <private/media/AudioEffectShared.h> 43#include <hardware_legacy/AudioHardwareInterface.h> 44 45#include "AudioMixer.h" 46#include "AudioFlinger.h" 47 48#ifdef WITH_A2DP 49#include "A2dpAudioInterface.h" 50#endif 51 52#include <media/EffectsFactoryApi.h> 53#include <media/EffectVisualizerApi.h> 54 55// ---------------------------------------------------------------------------- 56// the sim build doesn't have gettid 57 58#ifndef HAVE_GETTID 59# define gettid getpid 60#endif 61 62// ---------------------------------------------------------------------------- 63 64extern const char * const gEffectLibPath; 65 66namespace android { 67 68static const char* kDeadlockedString = "AudioFlinger may be deadlocked\n"; 69static const char* kHardwareLockedString = "Hardware lock is taken\n"; 70 71//static const nsecs_t kStandbyTimeInNsecs = seconds(3); 72static const float MAX_GAIN = 4096.0f; 73static const float MAX_GAIN_INT = 0x1000; 74 75// retry counts for buffer fill timeout 76// 50 * ~20msecs = 1 second 77static const int8_t kMaxTrackRetries = 50; 78static const int8_t kMaxTrackStartupRetries = 50; 79// allow less retry attempts on direct output thread. 80// direct outputs can be a scarce resource in audio hardware and should 81// be released as quickly as possible. 82static const int8_t kMaxTrackRetriesDirect = 2; 83 84static const int kDumpLockRetries = 50; 85static const int kDumpLockSleep = 20000; 86 87static const nsecs_t kWarningThrottle = seconds(5); 88 89 90#define AUDIOFLINGER_SECURITY_ENABLED 1 91 92// ---------------------------------------------------------------------------- 93 94static bool recordingAllowed() { 95#ifndef HAVE_ANDROID_OS 96 return true; 97#endif 98#if AUDIOFLINGER_SECURITY_ENABLED 99 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 100 bool ok = checkCallingPermission(String16("android.permission.RECORD_AUDIO")); 101 if (!ok) LOGE("Request requires android.permission.RECORD_AUDIO"); 102 return ok; 103#else 104 if (!checkCallingPermission(String16("android.permission.RECORD_AUDIO"))) 105 LOGW("WARNING: Need to add android.permission.RECORD_AUDIO to manifest"); 106 return true; 107#endif 108} 109 110static bool settingsAllowed() { 111#ifndef HAVE_ANDROID_OS 112 return true; 113#endif 114#if AUDIOFLINGER_SECURITY_ENABLED 115 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 116 bool ok = checkCallingPermission(String16("android.permission.MODIFY_AUDIO_SETTINGS")); 117 if (!ok) LOGE("Request requires android.permission.MODIFY_AUDIO_SETTINGS"); 118 return ok; 119#else 120 if (!checkCallingPermission(String16("android.permission.MODIFY_AUDIO_SETTINGS"))) 121 LOGW("WARNING: Need to add android.permission.MODIFY_AUDIO_SETTINGS to manifest"); 122 return true; 123#endif 124} 125 126// To collect the amplifier usage 127static void addBatteryData(uint32_t params) { 128 sp<IBinder> binder = 129 defaultServiceManager()->getService(String16("media.player")); 130 sp<IMediaPlayerService> service = interface_cast<IMediaPlayerService>(binder); 131 if (service.get() == NULL) { 132 LOGW("Cannot connect to the MediaPlayerService for battery tracking"); 133 return; 134 } 135 136 service->addBatteryData(params); 137} 138 139// ---------------------------------------------------------------------------- 140 141AudioFlinger::AudioFlinger() 142 : BnAudioFlinger(), 143 mAudioHardware(0), mMasterVolume(1.0f), mMasterMute(false), mNextUniqueId(1) 144{ 145 Mutex::Autolock _l(mLock); 146 147 mHardwareStatus = AUDIO_HW_IDLE; 148 149 mAudioHardware = AudioHardwareInterface::create(); 150 151 mHardwareStatus = AUDIO_HW_INIT; 152 if (mAudioHardware->initCheck() == NO_ERROR) { 153 AutoMutex lock(mHardwareLock); 154 mMode = AudioSystem::MODE_NORMAL; 155 mHardwareStatus = AUDIO_HW_SET_MODE; 156 mAudioHardware->setMode(mMode); 157 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 158 mAudioHardware->setMasterVolume(1.0f); 159 mHardwareStatus = AUDIO_HW_IDLE; 160 } else { 161 LOGE("Couldn't even initialize the stubbed audio hardware!"); 162 } 163} 164 165AudioFlinger::~AudioFlinger() 166{ 167 while (!mRecordThreads.isEmpty()) { 168 // closeInput() will remove first entry from mRecordThreads 169 closeInput(mRecordThreads.keyAt(0)); 170 } 171 while (!mPlaybackThreads.isEmpty()) { 172 // closeOutput() will remove first entry from mPlaybackThreads 173 closeOutput(mPlaybackThreads.keyAt(0)); 174 } 175 if (mAudioHardware) { 176 delete mAudioHardware; 177 } 178} 179 180 181 182status_t AudioFlinger::dumpClients(int fd, const Vector<String16>& args) 183{ 184 const size_t SIZE = 256; 185 char buffer[SIZE]; 186 String8 result; 187 188 result.append("Clients:\n"); 189 for (size_t i = 0; i < mClients.size(); ++i) { 190 wp<Client> wClient = mClients.valueAt(i); 191 if (wClient != 0) { 192 sp<Client> client = wClient.promote(); 193 if (client != 0) { 194 snprintf(buffer, SIZE, " pid: %d\n", client->pid()); 195 result.append(buffer); 196 } 197 } 198 } 199 write(fd, result.string(), result.size()); 200 return NO_ERROR; 201} 202 203 204status_t AudioFlinger::dumpInternals(int fd, const Vector<String16>& args) 205{ 206 const size_t SIZE = 256; 207 char buffer[SIZE]; 208 String8 result; 209 int hardwareStatus = mHardwareStatus; 210 211 snprintf(buffer, SIZE, "Hardware status: %d\n", hardwareStatus); 212 result.append(buffer); 213 write(fd, result.string(), result.size()); 214 return NO_ERROR; 215} 216 217status_t AudioFlinger::dumpPermissionDenial(int fd, const Vector<String16>& args) 218{ 219 const size_t SIZE = 256; 220 char buffer[SIZE]; 221 String8 result; 222 snprintf(buffer, SIZE, "Permission Denial: " 223 "can't dump AudioFlinger from pid=%d, uid=%d\n", 224 IPCThreadState::self()->getCallingPid(), 225 IPCThreadState::self()->getCallingUid()); 226 result.append(buffer); 227 write(fd, result.string(), result.size()); 228 return NO_ERROR; 229} 230 231static bool tryLock(Mutex& mutex) 232{ 233 bool locked = false; 234 for (int i = 0; i < kDumpLockRetries; ++i) { 235 if (mutex.tryLock() == NO_ERROR) { 236 locked = true; 237 break; 238 } 239 usleep(kDumpLockSleep); 240 } 241 return locked; 242} 243 244status_t AudioFlinger::dump(int fd, const Vector<String16>& args) 245{ 246 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 247 dumpPermissionDenial(fd, args); 248 } else { 249 // get state of hardware lock 250 bool hardwareLocked = tryLock(mHardwareLock); 251 if (!hardwareLocked) { 252 String8 result(kHardwareLockedString); 253 write(fd, result.string(), result.size()); 254 } else { 255 mHardwareLock.unlock(); 256 } 257 258 bool locked = tryLock(mLock); 259 260 // failed to lock - AudioFlinger is probably deadlocked 261 if (!locked) { 262 String8 result(kDeadlockedString); 263 write(fd, result.string(), result.size()); 264 } 265 266 dumpClients(fd, args); 267 dumpInternals(fd, args); 268 269 // dump playback threads 270 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 271 mPlaybackThreads.valueAt(i)->dump(fd, args); 272 } 273 274 // dump record threads 275 for (size_t i = 0; i < mRecordThreads.size(); i++) { 276 mRecordThreads.valueAt(i)->dump(fd, args); 277 } 278 279 if (mAudioHardware) { 280 mAudioHardware->dumpState(fd, args); 281 } 282 if (locked) mLock.unlock(); 283 } 284 return NO_ERROR; 285} 286 287 288// IAudioFlinger interface 289 290 291sp<IAudioTrack> AudioFlinger::createTrack( 292 pid_t pid, 293 int streamType, 294 uint32_t sampleRate, 295 int format, 296 int channelCount, 297 int frameCount, 298 uint32_t flags, 299 const sp<IMemory>& sharedBuffer, 300 int output, 301 int *sessionId, 302 status_t *status) 303{ 304 sp<PlaybackThread::Track> track; 305 sp<TrackHandle> trackHandle; 306 sp<Client> client; 307 wp<Client> wclient; 308 status_t lStatus; 309 int lSessionId; 310 311 if (streamType >= AudioSystem::NUM_STREAM_TYPES) { 312 LOGE("invalid stream type"); 313 lStatus = BAD_VALUE; 314 goto Exit; 315 } 316 317 { 318 Mutex::Autolock _l(mLock); 319 PlaybackThread *thread = checkPlaybackThread_l(output); 320 PlaybackThread *effectThread = NULL; 321 if (thread == NULL) { 322 LOGE("unknown output thread"); 323 lStatus = BAD_VALUE; 324 goto Exit; 325 } 326 327 wclient = mClients.valueFor(pid); 328 329 if (wclient != NULL) { 330 client = wclient.promote(); 331 } else { 332 client = new Client(this, pid); 333 mClients.add(pid, client); 334 } 335 336 LOGV("createTrack() sessionId: %d", (sessionId == NULL) ? -2 : *sessionId); 337 if (sessionId != NULL && *sessionId != AudioSystem::SESSION_OUTPUT_MIX) { 338 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 339 sp<PlaybackThread> t = mPlaybackThreads.valueAt(i); 340 if (mPlaybackThreads.keyAt(i) != output) { 341 // prevent same audio session on different output threads 342 uint32_t sessions = t->hasAudioSession(*sessionId); 343 if (sessions & PlaybackThread::TRACK_SESSION) { 344 lStatus = BAD_VALUE; 345 goto Exit; 346 } 347 // check if an effect with same session ID is waiting for a track to be created 348 if (sessions & PlaybackThread::EFFECT_SESSION) { 349 effectThread = t.get(); 350 } 351 } 352 } 353 lSessionId = *sessionId; 354 } else { 355 // if no audio session id is provided, create one here 356 lSessionId = nextUniqueId_l(); 357 if (sessionId != NULL) { 358 *sessionId = lSessionId; 359 } 360 } 361 LOGV("createTrack() lSessionId: %d", lSessionId); 362 363 track = thread->createTrack_l(client, streamType, sampleRate, format, 364 channelCount, frameCount, sharedBuffer, lSessionId, &lStatus); 365 366 // move effect chain to this output thread if an effect on same session was waiting 367 // for a track to be created 368 if (lStatus == NO_ERROR && effectThread != NULL) { 369 Mutex::Autolock _dl(thread->mLock); 370 Mutex::Autolock _sl(effectThread->mLock); 371 moveEffectChain_l(lSessionId, effectThread, thread, true); 372 } 373 } 374 if (lStatus == NO_ERROR) { 375 trackHandle = new TrackHandle(track); 376 } else { 377 // remove local strong reference to Client before deleting the Track so that the Client 378 // destructor is called by the TrackBase destructor with mLock held 379 client.clear(); 380 track.clear(); 381 } 382 383Exit: 384 if(status) { 385 *status = lStatus; 386 } 387 return trackHandle; 388} 389 390uint32_t AudioFlinger::sampleRate(int output) const 391{ 392 Mutex::Autolock _l(mLock); 393 PlaybackThread *thread = checkPlaybackThread_l(output); 394 if (thread == NULL) { 395 LOGW("sampleRate() unknown thread %d", output); 396 return 0; 397 } 398 return thread->sampleRate(); 399} 400 401int AudioFlinger::channelCount(int output) const 402{ 403 Mutex::Autolock _l(mLock); 404 PlaybackThread *thread = checkPlaybackThread_l(output); 405 if (thread == NULL) { 406 LOGW("channelCount() unknown thread %d", output); 407 return 0; 408 } 409 return thread->channelCount(); 410} 411 412int AudioFlinger::format(int output) const 413{ 414 Mutex::Autolock _l(mLock); 415 PlaybackThread *thread = checkPlaybackThread_l(output); 416 if (thread == NULL) { 417 LOGW("format() unknown thread %d", output); 418 return 0; 419 } 420 return thread->format(); 421} 422 423size_t AudioFlinger::frameCount(int output) const 424{ 425 Mutex::Autolock _l(mLock); 426 PlaybackThread *thread = checkPlaybackThread_l(output); 427 if (thread == NULL) { 428 LOGW("frameCount() unknown thread %d", output); 429 return 0; 430 } 431 return thread->frameCount(); 432} 433 434uint32_t AudioFlinger::latency(int output) const 435{ 436 Mutex::Autolock _l(mLock); 437 PlaybackThread *thread = checkPlaybackThread_l(output); 438 if (thread == NULL) { 439 LOGW("latency() unknown thread %d", output); 440 return 0; 441 } 442 return thread->latency(); 443} 444 445status_t AudioFlinger::setMasterVolume(float value) 446{ 447 // check calling permissions 448 if (!settingsAllowed()) { 449 return PERMISSION_DENIED; 450 } 451 452 // when hw supports master volume, don't scale in sw mixer 453 { // scope for the lock 454 AutoMutex lock(mHardwareLock); 455 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 456 if (mAudioHardware->setMasterVolume(value) == NO_ERROR) { 457 value = 1.0f; 458 } 459 mHardwareStatus = AUDIO_HW_IDLE; 460 } 461 462 Mutex::Autolock _l(mLock); 463 mMasterVolume = value; 464 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 465 mPlaybackThreads.valueAt(i)->setMasterVolume(value); 466 467 return NO_ERROR; 468} 469 470status_t AudioFlinger::setMode(int mode) 471{ 472 status_t ret; 473 474 // check calling permissions 475 if (!settingsAllowed()) { 476 return PERMISSION_DENIED; 477 } 478 if ((mode < 0) || (mode >= AudioSystem::NUM_MODES)) { 479 LOGW("Illegal value: setMode(%d)", mode); 480 return BAD_VALUE; 481 } 482 483 { // scope for the lock 484 AutoMutex lock(mHardwareLock); 485 mHardwareStatus = AUDIO_HW_SET_MODE; 486 ret = mAudioHardware->setMode(mode); 487 mHardwareStatus = AUDIO_HW_IDLE; 488 } 489 490 if (NO_ERROR == ret) { 491 Mutex::Autolock _l(mLock); 492 mMode = mode; 493 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 494 mPlaybackThreads.valueAt(i)->setMode(mode); 495 } 496 497 return ret; 498} 499 500status_t AudioFlinger::setMicMute(bool state) 501{ 502 // check calling permissions 503 if (!settingsAllowed()) { 504 return PERMISSION_DENIED; 505 } 506 507 AutoMutex lock(mHardwareLock); 508 mHardwareStatus = AUDIO_HW_SET_MIC_MUTE; 509 status_t ret = mAudioHardware->setMicMute(state); 510 mHardwareStatus = AUDIO_HW_IDLE; 511 return ret; 512} 513 514bool AudioFlinger::getMicMute() const 515{ 516 bool state = AudioSystem::MODE_INVALID; 517 mHardwareStatus = AUDIO_HW_GET_MIC_MUTE; 518 mAudioHardware->getMicMute(&state); 519 mHardwareStatus = AUDIO_HW_IDLE; 520 return state; 521} 522 523status_t AudioFlinger::setMasterMute(bool muted) 524{ 525 // check calling permissions 526 if (!settingsAllowed()) { 527 return PERMISSION_DENIED; 528 } 529 530 Mutex::Autolock _l(mLock); 531 mMasterMute = muted; 532 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 533 mPlaybackThreads.valueAt(i)->setMasterMute(muted); 534 535 return NO_ERROR; 536} 537 538float AudioFlinger::masterVolume() const 539{ 540 return mMasterVolume; 541} 542 543bool AudioFlinger::masterMute() const 544{ 545 return mMasterMute; 546} 547 548status_t AudioFlinger::setStreamVolume(int stream, float value, int output) 549{ 550 // check calling permissions 551 if (!settingsAllowed()) { 552 return PERMISSION_DENIED; 553 } 554 555 if (stream < 0 || uint32_t(stream) >= AudioSystem::NUM_STREAM_TYPES) { 556 return BAD_VALUE; 557 } 558 559 AutoMutex lock(mLock); 560 PlaybackThread *thread = NULL; 561 if (output) { 562 thread = checkPlaybackThread_l(output); 563 if (thread == NULL) { 564 return BAD_VALUE; 565 } 566 } 567 568 mStreamTypes[stream].volume = value; 569 570 if (thread == NULL) { 571 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) { 572 mPlaybackThreads.valueAt(i)->setStreamVolume(stream, value); 573 } 574 } else { 575 thread->setStreamVolume(stream, value); 576 } 577 578 return NO_ERROR; 579} 580 581status_t AudioFlinger::setStreamMute(int stream, bool muted) 582{ 583 // check calling permissions 584 if (!settingsAllowed()) { 585 return PERMISSION_DENIED; 586 } 587 588 if (stream < 0 || uint32_t(stream) >= AudioSystem::NUM_STREAM_TYPES || 589 uint32_t(stream) == AudioSystem::ENFORCED_AUDIBLE) { 590 return BAD_VALUE; 591 } 592 593 AutoMutex lock(mLock); 594 mStreamTypes[stream].mute = muted; 595 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 596 mPlaybackThreads.valueAt(i)->setStreamMute(stream, muted); 597 598 return NO_ERROR; 599} 600 601float AudioFlinger::streamVolume(int stream, int output) const 602{ 603 if (stream < 0 || uint32_t(stream) >= AudioSystem::NUM_STREAM_TYPES) { 604 return 0.0f; 605 } 606 607 AutoMutex lock(mLock); 608 float volume; 609 if (output) { 610 PlaybackThread *thread = checkPlaybackThread_l(output); 611 if (thread == NULL) { 612 return 0.0f; 613 } 614 volume = thread->streamVolume(stream); 615 } else { 616 volume = mStreamTypes[stream].volume; 617 } 618 619 return volume; 620} 621 622bool AudioFlinger::streamMute(int stream) const 623{ 624 if (stream < 0 || stream >= (int)AudioSystem::NUM_STREAM_TYPES) { 625 return true; 626 } 627 628 return mStreamTypes[stream].mute; 629} 630 631status_t AudioFlinger::setParameters(int ioHandle, const String8& keyValuePairs) 632{ 633 status_t result; 634 635 LOGV("setParameters(): io %d, keyvalue %s, tid %d, calling tid %d", 636 ioHandle, keyValuePairs.string(), gettid(), IPCThreadState::self()->getCallingPid()); 637 // check calling permissions 638 if (!settingsAllowed()) { 639 return PERMISSION_DENIED; 640 } 641 642 // ioHandle == 0 means the parameters are global to the audio hardware interface 643 if (ioHandle == 0) { 644 AutoMutex lock(mHardwareLock); 645 mHardwareStatus = AUDIO_SET_PARAMETER; 646 result = mAudioHardware->setParameters(keyValuePairs); 647 mHardwareStatus = AUDIO_HW_IDLE; 648 return result; 649 } 650 651 // hold a strong ref on thread in case closeOutput() or closeInput() is called 652 // and the thread is exited once the lock is released 653 sp<ThreadBase> thread; 654 { 655 Mutex::Autolock _l(mLock); 656 thread = checkPlaybackThread_l(ioHandle); 657 if (thread == NULL) { 658 thread = checkRecordThread_l(ioHandle); 659 } 660 } 661 if (thread != NULL) { 662 result = thread->setParameters(keyValuePairs); 663 return result; 664 } 665 return BAD_VALUE; 666} 667 668String8 AudioFlinger::getParameters(int ioHandle, const String8& keys) 669{ 670// LOGV("getParameters() io %d, keys %s, tid %d, calling tid %d", 671// ioHandle, keys.string(), gettid(), IPCThreadState::self()->getCallingPid()); 672 673 if (ioHandle == 0) { 674 return mAudioHardware->getParameters(keys); 675 } 676 677 Mutex::Autolock _l(mLock); 678 679 PlaybackThread *playbackThread = checkPlaybackThread_l(ioHandle); 680 if (playbackThread != NULL) { 681 return playbackThread->getParameters(keys); 682 } 683 RecordThread *recordThread = checkRecordThread_l(ioHandle); 684 if (recordThread != NULL) { 685 return recordThread->getParameters(keys); 686 } 687 return String8(""); 688} 689 690size_t AudioFlinger::getInputBufferSize(uint32_t sampleRate, int format, int channelCount) 691{ 692 return mAudioHardware->getInputBufferSize(sampleRate, format, channelCount); 693} 694 695unsigned int AudioFlinger::getInputFramesLost(int ioHandle) 696{ 697 if (ioHandle == 0) { 698 return 0; 699 } 700 701 Mutex::Autolock _l(mLock); 702 703 RecordThread *recordThread = checkRecordThread_l(ioHandle); 704 if (recordThread != NULL) { 705 return recordThread->getInputFramesLost(); 706 } 707 return 0; 708} 709 710status_t AudioFlinger::setVoiceVolume(float value) 711{ 712 // check calling permissions 713 if (!settingsAllowed()) { 714 return PERMISSION_DENIED; 715 } 716 717 AutoMutex lock(mHardwareLock); 718 mHardwareStatus = AUDIO_SET_VOICE_VOLUME; 719 status_t ret = mAudioHardware->setVoiceVolume(value); 720 mHardwareStatus = AUDIO_HW_IDLE; 721 722 return ret; 723} 724 725status_t AudioFlinger::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output) 726{ 727 status_t status; 728 729 Mutex::Autolock _l(mLock); 730 731 PlaybackThread *playbackThread = checkPlaybackThread_l(output); 732 if (playbackThread != NULL) { 733 return playbackThread->getRenderPosition(halFrames, dspFrames); 734 } 735 736 return BAD_VALUE; 737} 738 739void AudioFlinger::registerClient(const sp<IAudioFlingerClient>& client) 740{ 741 742 Mutex::Autolock _l(mLock); 743 744 int pid = IPCThreadState::self()->getCallingPid(); 745 if (mNotificationClients.indexOfKey(pid) < 0) { 746 sp<NotificationClient> notificationClient = new NotificationClient(this, 747 client, 748 pid); 749 LOGV("registerClient() client %p, pid %d", notificationClient.get(), pid); 750 751 mNotificationClients.add(pid, notificationClient); 752 753 sp<IBinder> binder = client->asBinder(); 754 binder->linkToDeath(notificationClient); 755 756 // the config change is always sent from playback or record threads to avoid deadlock 757 // with AudioSystem::gLock 758 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 759 mPlaybackThreads.valueAt(i)->sendConfigEvent(AudioSystem::OUTPUT_OPENED); 760 } 761 762 for (size_t i = 0; i < mRecordThreads.size(); i++) { 763 mRecordThreads.valueAt(i)->sendConfigEvent(AudioSystem::INPUT_OPENED); 764 } 765 } 766} 767 768void AudioFlinger::removeNotificationClient(pid_t pid) 769{ 770 Mutex::Autolock _l(mLock); 771 772 int index = mNotificationClients.indexOfKey(pid); 773 if (index >= 0) { 774 sp <NotificationClient> client = mNotificationClients.valueFor(pid); 775 LOGV("removeNotificationClient() %p, pid %d", client.get(), pid); 776 mNotificationClients.removeItem(pid); 777 } 778} 779 780// audioConfigChanged_l() must be called with AudioFlinger::mLock held 781void AudioFlinger::audioConfigChanged_l(int event, int ioHandle, void *param2) 782{ 783 size_t size = mNotificationClients.size(); 784 for (size_t i = 0; i < size; i++) { 785 mNotificationClients.valueAt(i)->client()->ioConfigChanged(event, ioHandle, param2); 786 } 787} 788 789// removeClient_l() must be called with AudioFlinger::mLock held 790void AudioFlinger::removeClient_l(pid_t pid) 791{ 792 LOGV("removeClient_l() pid %d, tid %d, calling tid %d", pid, gettid(), IPCThreadState::self()->getCallingPid()); 793 mClients.removeItem(pid); 794} 795 796 797// ---------------------------------------------------------------------------- 798 799AudioFlinger::ThreadBase::ThreadBase(const sp<AudioFlinger>& audioFlinger, int id) 800 : Thread(false), 801 mAudioFlinger(audioFlinger), mSampleRate(0), mFrameCount(0), mChannelCount(0), 802 mFrameSize(1), mFormat(0), mStandby(false), mId(id), mExiting(false) 803{ 804} 805 806AudioFlinger::ThreadBase::~ThreadBase() 807{ 808 mParamCond.broadcast(); 809 mNewParameters.clear(); 810} 811 812void AudioFlinger::ThreadBase::exit() 813{ 814 // keep a strong ref on ourself so that we wont get 815 // destroyed in the middle of requestExitAndWait() 816 sp <ThreadBase> strongMe = this; 817 818 LOGV("ThreadBase::exit"); 819 { 820 AutoMutex lock(&mLock); 821 mExiting = true; 822 requestExit(); 823 mWaitWorkCV.signal(); 824 } 825 requestExitAndWait(); 826} 827 828uint32_t AudioFlinger::ThreadBase::sampleRate() const 829{ 830 return mSampleRate; 831} 832 833int AudioFlinger::ThreadBase::channelCount() const 834{ 835 return (int)mChannelCount; 836} 837 838int AudioFlinger::ThreadBase::format() const 839{ 840 return mFormat; 841} 842 843size_t AudioFlinger::ThreadBase::frameCount() const 844{ 845 return mFrameCount; 846} 847 848status_t AudioFlinger::ThreadBase::setParameters(const String8& keyValuePairs) 849{ 850 status_t status; 851 852 LOGV("ThreadBase::setParameters() %s", keyValuePairs.string()); 853 Mutex::Autolock _l(mLock); 854 855 mNewParameters.add(keyValuePairs); 856 mWaitWorkCV.signal(); 857 // wait condition with timeout in case the thread loop has exited 858 // before the request could be processed 859 if (mParamCond.waitRelative(mLock, seconds(2)) == NO_ERROR) { 860 status = mParamStatus; 861 mWaitWorkCV.signal(); 862 } else { 863 status = TIMED_OUT; 864 } 865 return status; 866} 867 868void AudioFlinger::ThreadBase::sendConfigEvent(int event, int param) 869{ 870 Mutex::Autolock _l(mLock); 871 sendConfigEvent_l(event, param); 872} 873 874// sendConfigEvent_l() must be called with ThreadBase::mLock held 875void AudioFlinger::ThreadBase::sendConfigEvent_l(int event, int param) 876{ 877 ConfigEvent *configEvent = new ConfigEvent(); 878 configEvent->mEvent = event; 879 configEvent->mParam = param; 880 mConfigEvents.add(configEvent); 881 LOGV("sendConfigEvent() num events %d event %d, param %d", mConfigEvents.size(), event, param); 882 mWaitWorkCV.signal(); 883} 884 885void AudioFlinger::ThreadBase::processConfigEvents() 886{ 887 mLock.lock(); 888 while(!mConfigEvents.isEmpty()) { 889 LOGV("processConfigEvents() remaining events %d", mConfigEvents.size()); 890 ConfigEvent *configEvent = mConfigEvents[0]; 891 mConfigEvents.removeAt(0); 892 // release mLock before locking AudioFlinger mLock: lock order is always 893 // AudioFlinger then ThreadBase to avoid cross deadlock 894 mLock.unlock(); 895 mAudioFlinger->mLock.lock(); 896 audioConfigChanged_l(configEvent->mEvent, configEvent->mParam); 897 mAudioFlinger->mLock.unlock(); 898 delete configEvent; 899 mLock.lock(); 900 } 901 mLock.unlock(); 902} 903 904status_t AudioFlinger::ThreadBase::dumpBase(int fd, const Vector<String16>& args) 905{ 906 const size_t SIZE = 256; 907 char buffer[SIZE]; 908 String8 result; 909 910 bool locked = tryLock(mLock); 911 if (!locked) { 912 snprintf(buffer, SIZE, "thread %p maybe dead locked\n", this); 913 write(fd, buffer, strlen(buffer)); 914 } 915 916 snprintf(buffer, SIZE, "standby: %d\n", mStandby); 917 result.append(buffer); 918 snprintf(buffer, SIZE, "Sample rate: %d\n", mSampleRate); 919 result.append(buffer); 920 snprintf(buffer, SIZE, "Frame count: %d\n", mFrameCount); 921 result.append(buffer); 922 snprintf(buffer, SIZE, "Channel Count: %d\n", mChannelCount); 923 result.append(buffer); 924 snprintf(buffer, SIZE, "Format: %d\n", mFormat); 925 result.append(buffer); 926 snprintf(buffer, SIZE, "Frame size: %d\n", mFrameSize); 927 result.append(buffer); 928 929 snprintf(buffer, SIZE, "\nPending setParameters commands: \n"); 930 result.append(buffer); 931 result.append(" Index Command"); 932 for (size_t i = 0; i < mNewParameters.size(); ++i) { 933 snprintf(buffer, SIZE, "\n %02d ", i); 934 result.append(buffer); 935 result.append(mNewParameters[i]); 936 } 937 938 snprintf(buffer, SIZE, "\n\nPending config events: \n"); 939 result.append(buffer); 940 snprintf(buffer, SIZE, " Index event param\n"); 941 result.append(buffer); 942 for (size_t i = 0; i < mConfigEvents.size(); i++) { 943 snprintf(buffer, SIZE, " %02d %02d %d\n", i, mConfigEvents[i]->mEvent, mConfigEvents[i]->mParam); 944 result.append(buffer); 945 } 946 result.append("\n"); 947 948 write(fd, result.string(), result.size()); 949 950 if (locked) { 951 mLock.unlock(); 952 } 953 return NO_ERROR; 954} 955 956 957// ---------------------------------------------------------------------------- 958 959AudioFlinger::PlaybackThread::PlaybackThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 960 : ThreadBase(audioFlinger, id), 961 mMixBuffer(0), mSuspended(0), mBytesWritten(0), mOutput(output), 962 mLastWriteTime(0), mNumWrites(0), mNumDelayedWrites(0), mInWrite(false), 963 mDevice(device) 964{ 965 readOutputParameters(); 966 967 mMasterVolume = mAudioFlinger->masterVolume(); 968 mMasterMute = mAudioFlinger->masterMute(); 969 970 for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) { 971 mStreamTypes[stream].volume = mAudioFlinger->streamVolumeInternal(stream); 972 mStreamTypes[stream].mute = mAudioFlinger->streamMute(stream); 973 } 974} 975 976AudioFlinger::PlaybackThread::~PlaybackThread() 977{ 978 delete [] mMixBuffer; 979} 980 981status_t AudioFlinger::PlaybackThread::dump(int fd, const Vector<String16>& args) 982{ 983 dumpInternals(fd, args); 984 dumpTracks(fd, args); 985 dumpEffectChains(fd, args); 986 return NO_ERROR; 987} 988 989status_t AudioFlinger::PlaybackThread::dumpTracks(int fd, const Vector<String16>& args) 990{ 991 const size_t SIZE = 256; 992 char buffer[SIZE]; 993 String8 result; 994 995 snprintf(buffer, SIZE, "Output thread %p tracks\n", this); 996 result.append(buffer); 997 result.append(" Name Clien Typ Fmt Chn Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 998 for (size_t i = 0; i < mTracks.size(); ++i) { 999 sp<Track> track = mTracks[i]; 1000 if (track != 0) { 1001 track->dump(buffer, SIZE); 1002 result.append(buffer); 1003 } 1004 } 1005 1006 snprintf(buffer, SIZE, "Output thread %p active tracks\n", this); 1007 result.append(buffer); 1008 result.append(" Name Clien Typ Fmt Chn Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 1009 for (size_t i = 0; i < mActiveTracks.size(); ++i) { 1010 wp<Track> wTrack = mActiveTracks[i]; 1011 if (wTrack != 0) { 1012 sp<Track> track = wTrack.promote(); 1013 if (track != 0) { 1014 track->dump(buffer, SIZE); 1015 result.append(buffer); 1016 } 1017 } 1018 } 1019 write(fd, result.string(), result.size()); 1020 return NO_ERROR; 1021} 1022 1023status_t AudioFlinger::PlaybackThread::dumpEffectChains(int fd, const Vector<String16>& args) 1024{ 1025 const size_t SIZE = 256; 1026 char buffer[SIZE]; 1027 String8 result; 1028 1029 snprintf(buffer, SIZE, "\n- %d Effect Chains:\n", mEffectChains.size()); 1030 write(fd, buffer, strlen(buffer)); 1031 1032 for (size_t i = 0; i < mEffectChains.size(); ++i) { 1033 sp<EffectChain> chain = mEffectChains[i]; 1034 if (chain != 0) { 1035 chain->dump(fd, args); 1036 } 1037 } 1038 return NO_ERROR; 1039} 1040 1041status_t AudioFlinger::PlaybackThread::dumpInternals(int fd, const Vector<String16>& args) 1042{ 1043 const size_t SIZE = 256; 1044 char buffer[SIZE]; 1045 String8 result; 1046 1047 snprintf(buffer, SIZE, "\nOutput thread %p internals\n", this); 1048 result.append(buffer); 1049 snprintf(buffer, SIZE, "last write occurred (msecs): %llu\n", ns2ms(systemTime() - mLastWriteTime)); 1050 result.append(buffer); 1051 snprintf(buffer, SIZE, "total writes: %d\n", mNumWrites); 1052 result.append(buffer); 1053 snprintf(buffer, SIZE, "delayed writes: %d\n", mNumDelayedWrites); 1054 result.append(buffer); 1055 snprintf(buffer, SIZE, "blocked in write: %d\n", mInWrite); 1056 result.append(buffer); 1057 snprintf(buffer, SIZE, "suspend count: %d\n", mSuspended); 1058 result.append(buffer); 1059 snprintf(buffer, SIZE, "mix buffer : %p\n", mMixBuffer); 1060 result.append(buffer); 1061 write(fd, result.string(), result.size()); 1062 1063 dumpBase(fd, args); 1064 1065 return NO_ERROR; 1066} 1067 1068// Thread virtuals 1069status_t AudioFlinger::PlaybackThread::readyToRun() 1070{ 1071 if (mSampleRate == 0) { 1072 LOGE("No working audio driver found."); 1073 return NO_INIT; 1074 } 1075 LOGI("AudioFlinger's thread %p ready to run", this); 1076 return NO_ERROR; 1077} 1078 1079void AudioFlinger::PlaybackThread::onFirstRef() 1080{ 1081 const size_t SIZE = 256; 1082 char buffer[SIZE]; 1083 1084 snprintf(buffer, SIZE, "Playback Thread %p", this); 1085 1086 run(buffer, ANDROID_PRIORITY_URGENT_AUDIO); 1087} 1088 1089// PlaybackThread::createTrack_l() must be called with AudioFlinger::mLock held 1090sp<AudioFlinger::PlaybackThread::Track> AudioFlinger::PlaybackThread::createTrack_l( 1091 const sp<AudioFlinger::Client>& client, 1092 int streamType, 1093 uint32_t sampleRate, 1094 int format, 1095 int channelCount, 1096 int frameCount, 1097 const sp<IMemory>& sharedBuffer, 1098 int sessionId, 1099 status_t *status) 1100{ 1101 sp<Track> track; 1102 status_t lStatus; 1103 1104 if (mType == DIRECT) { 1105 if (sampleRate != mSampleRate || format != mFormat || channelCount != (int)mChannelCount) { 1106 LOGE("createTrack_l() Bad parameter: sampleRate %d format %d, channelCount %d for output %p", 1107 sampleRate, format, channelCount, mOutput); 1108 lStatus = BAD_VALUE; 1109 goto Exit; 1110 } 1111 } else { 1112 // Resampler implementation limits input sampling rate to 2 x output sampling rate. 1113 if (sampleRate > mSampleRate*2) { 1114 LOGE("Sample rate out of range: %d mSampleRate %d", sampleRate, mSampleRate); 1115 lStatus = BAD_VALUE; 1116 goto Exit; 1117 } 1118 } 1119 1120 if (mOutput == 0) { 1121 LOGE("Audio driver not initialized."); 1122 lStatus = NO_INIT; 1123 goto Exit; 1124 } 1125 1126 { // scope for mLock 1127 Mutex::Autolock _l(mLock); 1128 1129 // all tracks in same audio session must share the same routing strategy otherwise 1130 // conflicts will happen when tracks are moved from one output to another by audio policy 1131 // manager 1132 uint32_t strategy = 1133 AudioSystem::getStrategyForStream((AudioSystem::stream_type)streamType); 1134 for (size_t i = 0; i < mTracks.size(); ++i) { 1135 sp<Track> t = mTracks[i]; 1136 if (t != 0) { 1137 if (sessionId == t->sessionId() && 1138 strategy != AudioSystem::getStrategyForStream((AudioSystem::stream_type)t->type())) { 1139 lStatus = BAD_VALUE; 1140 goto Exit; 1141 } 1142 } 1143 } 1144 1145 track = new Track(this, client, streamType, sampleRate, format, 1146 channelCount, frameCount, sharedBuffer, sessionId); 1147 if (track->getCblk() == NULL || track->name() < 0) { 1148 lStatus = NO_MEMORY; 1149 goto Exit; 1150 } 1151 mTracks.add(track); 1152 1153 sp<EffectChain> chain = getEffectChain_l(sessionId); 1154 if (chain != 0) { 1155 LOGV("createTrack_l() setting main buffer %p", chain->inBuffer()); 1156 track->setMainBuffer(chain->inBuffer()); 1157 chain->setStrategy(AudioSystem::getStrategyForStream((AudioSystem::stream_type)track->type())); 1158 } 1159 } 1160 lStatus = NO_ERROR; 1161 1162Exit: 1163 if(status) { 1164 *status = lStatus; 1165 } 1166 return track; 1167} 1168 1169uint32_t AudioFlinger::PlaybackThread::latency() const 1170{ 1171 if (mOutput) { 1172 return mOutput->latency(); 1173 } 1174 else { 1175 return 0; 1176 } 1177} 1178 1179status_t AudioFlinger::PlaybackThread::setMasterVolume(float value) 1180{ 1181 mMasterVolume = value; 1182 return NO_ERROR; 1183} 1184 1185status_t AudioFlinger::PlaybackThread::setMasterMute(bool muted) 1186{ 1187 mMasterMute = muted; 1188 return NO_ERROR; 1189} 1190 1191float AudioFlinger::PlaybackThread::masterVolume() const 1192{ 1193 return mMasterVolume; 1194} 1195 1196bool AudioFlinger::PlaybackThread::masterMute() const 1197{ 1198 return mMasterMute; 1199} 1200 1201status_t AudioFlinger::PlaybackThread::setStreamVolume(int stream, float value) 1202{ 1203 mStreamTypes[stream].volume = value; 1204 return NO_ERROR; 1205} 1206 1207status_t AudioFlinger::PlaybackThread::setStreamMute(int stream, bool muted) 1208{ 1209 mStreamTypes[stream].mute = muted; 1210 return NO_ERROR; 1211} 1212 1213float AudioFlinger::PlaybackThread::streamVolume(int stream) const 1214{ 1215 return mStreamTypes[stream].volume; 1216} 1217 1218bool AudioFlinger::PlaybackThread::streamMute(int stream) const 1219{ 1220 return mStreamTypes[stream].mute; 1221} 1222 1223// addTrack_l() must be called with ThreadBase::mLock held 1224status_t AudioFlinger::PlaybackThread::addTrack_l(const sp<Track>& track) 1225{ 1226 status_t status = ALREADY_EXISTS; 1227 1228 // set retry count for buffer fill 1229 track->mRetryCount = kMaxTrackStartupRetries; 1230 if (mActiveTracks.indexOf(track) < 0) { 1231 // the track is newly added, make sure it fills up all its 1232 // buffers before playing. This is to ensure the client will 1233 // effectively get the latency it requested. 1234 track->mFillingUpStatus = Track::FS_FILLING; 1235 track->mResetDone = false; 1236 mActiveTracks.add(track); 1237 if (track->mainBuffer() != mMixBuffer) { 1238 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1239 if (chain != 0) { 1240 LOGV("addTrack_l() starting track on chain %p for session %d", chain.get(), track->sessionId()); 1241 chain->startTrack(); 1242 } 1243 } 1244 1245 status = NO_ERROR; 1246 } 1247 1248 LOGV("mWaitWorkCV.broadcast"); 1249 mWaitWorkCV.broadcast(); 1250 1251 return status; 1252} 1253 1254// destroyTrack_l() must be called with ThreadBase::mLock held 1255void AudioFlinger::PlaybackThread::destroyTrack_l(const sp<Track>& track) 1256{ 1257 track->mState = TrackBase::TERMINATED; 1258 if (mActiveTracks.indexOf(track) < 0) { 1259 mTracks.remove(track); 1260 deleteTrackName_l(track->name()); 1261 } 1262} 1263 1264String8 AudioFlinger::PlaybackThread::getParameters(const String8& keys) 1265{ 1266 return mOutput->getParameters(keys); 1267} 1268 1269// destroyTrack_l() must be called with AudioFlinger::mLock held 1270void AudioFlinger::PlaybackThread::audioConfigChanged_l(int event, int param) { 1271 AudioSystem::OutputDescriptor desc; 1272 void *param2 = 0; 1273 1274 LOGV("PlaybackThread::audioConfigChanged_l, thread %p, event %d, param %d", this, event, param); 1275 1276 switch (event) { 1277 case AudioSystem::OUTPUT_OPENED: 1278 case AudioSystem::OUTPUT_CONFIG_CHANGED: 1279 desc.channels = mChannels; 1280 desc.samplingRate = mSampleRate; 1281 desc.format = mFormat; 1282 desc.frameCount = mFrameCount; 1283 desc.latency = latency(); 1284 param2 = &desc; 1285 break; 1286 1287 case AudioSystem::STREAM_CONFIG_CHANGED: 1288 param2 = ¶m; 1289 case AudioSystem::OUTPUT_CLOSED: 1290 default: 1291 break; 1292 } 1293 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 1294} 1295 1296void AudioFlinger::PlaybackThread::readOutputParameters() 1297{ 1298 mSampleRate = mOutput->sampleRate(); 1299 mChannels = mOutput->channels(); 1300 mChannelCount = (uint16_t)AudioSystem::popCount(mChannels); 1301 mFormat = mOutput->format(); 1302 mFrameSize = (uint16_t)mOutput->frameSize(); 1303 mFrameCount = mOutput->bufferSize() / mFrameSize; 1304 1305 // FIXME - Current mixer implementation only supports stereo output: Always 1306 // Allocate a stereo buffer even if HW output is mono. 1307 if (mMixBuffer != NULL) delete[] mMixBuffer; 1308 mMixBuffer = new int16_t[mFrameCount * 2]; 1309 memset(mMixBuffer, 0, mFrameCount * 2 * sizeof(int16_t)); 1310 1311 // force reconfiguration of effect chains and engines to take new buffer size and audio 1312 // parameters into account 1313 // Note that mLock is not held when readOutputParameters() is called from the constructor 1314 // but in this case nothing is done below as no audio sessions have effect yet so it doesn't 1315 // matter. 1316 // create a copy of mEffectChains as calling moveEffectChain_l() can reorder some effect chains 1317 Vector< sp<EffectChain> > effectChains = mEffectChains; 1318 for (size_t i = 0; i < effectChains.size(); i ++) { 1319 mAudioFlinger->moveEffectChain_l(effectChains[i]->sessionId(), this, this, false); 1320 } 1321} 1322 1323status_t AudioFlinger::PlaybackThread::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames) 1324{ 1325 if (halFrames == 0 || dspFrames == 0) { 1326 return BAD_VALUE; 1327 } 1328 if (mOutput == 0) { 1329 return INVALID_OPERATION; 1330 } 1331 *halFrames = mBytesWritten/mOutput->frameSize(); 1332 1333 return mOutput->getRenderPosition(dspFrames); 1334} 1335 1336uint32_t AudioFlinger::PlaybackThread::hasAudioSession(int sessionId) 1337{ 1338 Mutex::Autolock _l(mLock); 1339 uint32_t result = 0; 1340 if (getEffectChain_l(sessionId) != 0) { 1341 result = EFFECT_SESSION; 1342 } 1343 1344 for (size_t i = 0; i < mTracks.size(); ++i) { 1345 sp<Track> track = mTracks[i]; 1346 if (sessionId == track->sessionId() && 1347 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1348 result |= TRACK_SESSION; 1349 break; 1350 } 1351 } 1352 1353 return result; 1354} 1355 1356uint32_t AudioFlinger::PlaybackThread::getStrategyForSession_l(int sessionId) 1357{ 1358 // session AudioSystem::SESSION_OUTPUT_MIX is placed in same strategy as MUSIC stream so that 1359 // it is moved to correct output by audio policy manager when A2DP is connected or disconnected 1360 if (sessionId == AudioSystem::SESSION_OUTPUT_MIX) { 1361 return AudioSystem::getStrategyForStream(AudioSystem::MUSIC); 1362 } 1363 for (size_t i = 0; i < mTracks.size(); i++) { 1364 sp<Track> track = mTracks[i]; 1365 if (sessionId == track->sessionId() && 1366 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1367 return AudioSystem::getStrategyForStream((AudioSystem::stream_type) track->type()); 1368 } 1369 } 1370 return AudioSystem::getStrategyForStream(AudioSystem::MUSIC); 1371} 1372 1373sp<AudioFlinger::EffectChain> AudioFlinger::PlaybackThread::getEffectChain(int sessionId) 1374{ 1375 Mutex::Autolock _l(mLock); 1376 return getEffectChain_l(sessionId); 1377} 1378 1379sp<AudioFlinger::EffectChain> AudioFlinger::PlaybackThread::getEffectChain_l(int sessionId) 1380{ 1381 sp<EffectChain> chain; 1382 1383 size_t size = mEffectChains.size(); 1384 for (size_t i = 0; i < size; i++) { 1385 if (mEffectChains[i]->sessionId() == sessionId) { 1386 chain = mEffectChains[i]; 1387 break; 1388 } 1389 } 1390 return chain; 1391} 1392 1393void AudioFlinger::PlaybackThread::setMode(uint32_t mode) 1394{ 1395 Mutex::Autolock _l(mLock); 1396 size_t size = mEffectChains.size(); 1397 for (size_t i = 0; i < size; i++) { 1398 mEffectChains[i]->setMode_l(mode); 1399 } 1400} 1401 1402// ---------------------------------------------------------------------------- 1403 1404AudioFlinger::MixerThread::MixerThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 1405 : PlaybackThread(audioFlinger, output, id, device), 1406 mAudioMixer(0) 1407{ 1408 mType = PlaybackThread::MIXER; 1409 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 1410 1411 // FIXME - Current mixer implementation only supports stereo output 1412 if (mChannelCount == 1) { 1413 LOGE("Invalid audio hardware channel count"); 1414 } 1415} 1416 1417AudioFlinger::MixerThread::~MixerThread() 1418{ 1419 delete mAudioMixer; 1420} 1421 1422bool AudioFlinger::MixerThread::threadLoop() 1423{ 1424 Vector< sp<Track> > tracksToRemove; 1425 uint32_t mixerStatus = MIXER_IDLE; 1426 nsecs_t standbyTime = systemTime(); 1427 size_t mixBufferSize = mFrameCount * mFrameSize; 1428 // FIXME: Relaxed timing because of a certain device that can't meet latency 1429 // Should be reduced to 2x after the vendor fixes the driver issue 1430 nsecs_t maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1431 nsecs_t lastWarning = 0; 1432 bool longStandbyExit = false; 1433 uint32_t activeSleepTime = activeSleepTimeUs(); 1434 uint32_t idleSleepTime = idleSleepTimeUs(); 1435 uint32_t sleepTime = idleSleepTime; 1436 Vector< sp<EffectChain> > effectChains; 1437 1438 while (!exitPending()) 1439 { 1440 processConfigEvents(); 1441 1442 mixerStatus = MIXER_IDLE; 1443 { // scope for mLock 1444 1445 Mutex::Autolock _l(mLock); 1446 1447 if (checkForNewParameters_l()) { 1448 mixBufferSize = mFrameCount * mFrameSize; 1449 // FIXME: Relaxed timing because of a certain device that can't meet latency 1450 // Should be reduced to 2x after the vendor fixes the driver issue 1451 maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1452 activeSleepTime = activeSleepTimeUs(); 1453 idleSleepTime = idleSleepTimeUs(); 1454 } 1455 1456 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 1457 1458 // put audio hardware into standby after short delay 1459 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 1460 mSuspended) { 1461 if (!mStandby) { 1462 LOGV("Audio hardware entering standby, mixer %p, mSuspended %d\n", this, mSuspended); 1463 mOutput->standby(); 1464 mStandby = true; 1465 mBytesWritten = 0; 1466 } 1467 1468 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 1469 // we're about to wait, flush the binder command buffer 1470 IPCThreadState::self()->flushCommands(); 1471 1472 if (exitPending()) break; 1473 1474 // wait until we have something to do... 1475 LOGV("MixerThread %p TID %d going to sleep\n", this, gettid()); 1476 mWaitWorkCV.wait(mLock); 1477 LOGV("MixerThread %p TID %d waking up\n", this, gettid()); 1478 1479 if (mMasterMute == false) { 1480 char value[PROPERTY_VALUE_MAX]; 1481 property_get("ro.audio.silent", value, "0"); 1482 if (atoi(value)) { 1483 LOGD("Silence is golden"); 1484 setMasterMute(true); 1485 } 1486 } 1487 1488 standbyTime = systemTime() + kStandbyTimeInNsecs; 1489 sleepTime = idleSleepTime; 1490 continue; 1491 } 1492 } 1493 1494 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 1495 1496 // prevent any changes in effect chain list and in each effect chain 1497 // during mixing and effect process as the audio buffers could be deleted 1498 // or modified if an effect is created or deleted 1499 lockEffectChains_l(effectChains); 1500 } 1501 1502 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 1503 // mix buffers... 1504 mAudioMixer->process(); 1505 sleepTime = 0; 1506 standbyTime = systemTime() + kStandbyTimeInNsecs; 1507 //TODO: delay standby when effects have a tail 1508 } else { 1509 // If no tracks are ready, sleep once for the duration of an output 1510 // buffer size, then write 0s to the output 1511 if (sleepTime == 0) { 1512 if (mixerStatus == MIXER_TRACKS_ENABLED) { 1513 sleepTime = activeSleepTime; 1514 } else { 1515 sleepTime = idleSleepTime; 1516 } 1517 } else if (mBytesWritten != 0 || 1518 (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)) { 1519 memset (mMixBuffer, 0, mixBufferSize); 1520 sleepTime = 0; 1521 LOGV_IF((mBytesWritten == 0 && (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)), "anticipated start"); 1522 } 1523 // TODO add standby time extension fct of effect tail 1524 } 1525 1526 if (mSuspended) { 1527 sleepTime = suspendSleepTimeUs(); 1528 } 1529 // sleepTime == 0 means we must write to audio hardware 1530 if (sleepTime == 0) { 1531 for (size_t i = 0; i < effectChains.size(); i ++) { 1532 effectChains[i]->process_l(); 1533 } 1534 // enable changes in effect chain 1535 unlockEffectChains(effectChains); 1536 mLastWriteTime = systemTime(); 1537 mInWrite = true; 1538 mBytesWritten += mixBufferSize; 1539 1540 int bytesWritten = (int)mOutput->write(mMixBuffer, mixBufferSize); 1541 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 1542 mNumWrites++; 1543 mInWrite = false; 1544 nsecs_t now = systemTime(); 1545 nsecs_t delta = now - mLastWriteTime; 1546 if (delta > maxPeriod) { 1547 mNumDelayedWrites++; 1548 if ((now - lastWarning) > kWarningThrottle) { 1549 LOGW("write blocked for %llu msecs, %d delayed writes, thread %p", 1550 ns2ms(delta), mNumDelayedWrites, this); 1551 lastWarning = now; 1552 } 1553 if (mStandby) { 1554 longStandbyExit = true; 1555 } 1556 } 1557 mStandby = false; 1558 } else { 1559 // enable changes in effect chain 1560 unlockEffectChains(effectChains); 1561 usleep(sleepTime); 1562 } 1563 1564 // finally let go of all our tracks, without the lock held 1565 // since we can't guarantee the destructors won't acquire that 1566 // same lock. 1567 tracksToRemove.clear(); 1568 1569 // Effect chains will be actually deleted here if they were removed from 1570 // mEffectChains list during mixing or effects processing 1571 effectChains.clear(); 1572 } 1573 1574 if (!mStandby) { 1575 mOutput->standby(); 1576 } 1577 1578 LOGV("MixerThread %p exiting", this); 1579 return false; 1580} 1581 1582// prepareTracks_l() must be called with ThreadBase::mLock held 1583uint32_t AudioFlinger::MixerThread::prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, Vector< sp<Track> > *tracksToRemove) 1584{ 1585 1586 uint32_t mixerStatus = MIXER_IDLE; 1587 // find out which tracks need to be processed 1588 size_t count = activeTracks.size(); 1589 size_t mixedTracks = 0; 1590 size_t tracksWithEffect = 0; 1591 1592 float masterVolume = mMasterVolume; 1593 bool masterMute = mMasterMute; 1594 1595 if (masterMute) { 1596 masterVolume = 0; 1597 } 1598 // Delegate master volume control to effect in output mix effect chain if needed 1599 sp<EffectChain> chain = getEffectChain_l(AudioSystem::SESSION_OUTPUT_MIX); 1600 if (chain != 0) { 1601 uint32_t v = (uint32_t)(masterVolume * (1 << 24)); 1602 chain->setVolume_l(&v, &v); 1603 masterVolume = (float)((v + (1 << 23)) >> 24); 1604 chain.clear(); 1605 } 1606 1607 for (size_t i=0 ; i<count ; i++) { 1608 sp<Track> t = activeTracks[i].promote(); 1609 if (t == 0) continue; 1610 1611 Track* const track = t.get(); 1612 audio_track_cblk_t* cblk = track->cblk(); 1613 1614 // The first time a track is added we wait 1615 // for all its buffers to be filled before processing it 1616 mAudioMixer->setActiveTrack(track->name()); 1617 if (cblk->framesReady() && track->isReady() && 1618 !track->isPaused() && !track->isTerminated()) 1619 { 1620 //LOGV("track %d u=%08x, s=%08x [OK] on thread %p", track->name(), cblk->user, cblk->server, this); 1621 1622 mixedTracks++; 1623 1624 // track->mainBuffer() != mMixBuffer means there is an effect chain 1625 // connected to the track 1626 chain.clear(); 1627 if (track->mainBuffer() != mMixBuffer) { 1628 chain = getEffectChain_l(track->sessionId()); 1629 // Delegate volume control to effect in track effect chain if needed 1630 if (chain != 0) { 1631 tracksWithEffect++; 1632 } else { 1633 LOGW("prepareTracks_l(): track %08x attached to effect but no chain found on session %d", 1634 track->name(), track->sessionId()); 1635 } 1636 } 1637 1638 1639 int param = AudioMixer::VOLUME; 1640 if (track->mFillingUpStatus == Track::FS_FILLED) { 1641 // no ramp for the first volume setting 1642 track->mFillingUpStatus = Track::FS_ACTIVE; 1643 if (track->mState == TrackBase::RESUMING) { 1644 track->mState = TrackBase::ACTIVE; 1645 param = AudioMixer::RAMP_VOLUME; 1646 } 1647 mAudioMixer->setParameter(AudioMixer::RESAMPLE, AudioMixer::RESET, NULL); 1648 } else if (cblk->server != 0) { 1649 // If the track is stopped before the first frame was mixed, 1650 // do not apply ramp 1651 param = AudioMixer::RAMP_VOLUME; 1652 } 1653 1654 // compute volume for this track 1655 uint32_t vl, vr, va; 1656 if (track->isMuted() || track->isPausing() || 1657 mStreamTypes[track->type()].mute) { 1658 vl = vr = va = 0; 1659 if (track->isPausing()) { 1660 track->setPaused(); 1661 } 1662 } else { 1663 1664 // read original volumes with volume control 1665 float typeVolume = mStreamTypes[track->type()].volume; 1666 float v = masterVolume * typeVolume; 1667 vl = (uint32_t)(v * cblk->volume[0]) << 12; 1668 vr = (uint32_t)(v * cblk->volume[1]) << 12; 1669 1670 va = (uint32_t)(v * cblk->sendLevel); 1671 } 1672 // Delegate volume control to effect in track effect chain if needed 1673 if (chain != 0 && chain->setVolume_l(&vl, &vr)) { 1674 // Do not ramp volume if volume is controlled by effect 1675 param = AudioMixer::VOLUME; 1676 track->mHasVolumeController = true; 1677 } else { 1678 // force no volume ramp when volume controller was just disabled or removed 1679 // from effect chain to avoid volume spike 1680 if (track->mHasVolumeController) { 1681 param = AudioMixer::VOLUME; 1682 } 1683 track->mHasVolumeController = false; 1684 } 1685 1686 // Convert volumes from 8.24 to 4.12 format 1687 int16_t left, right, aux; 1688 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 1689 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 1690 left = int16_t(v_clamped); 1691 v_clamped = (vr + (1 << 11)) >> 12; 1692 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 1693 right = int16_t(v_clamped); 1694 1695 if (va > MAX_GAIN_INT) va = MAX_GAIN_INT; 1696 aux = int16_t(va); 1697 1698 // XXX: these things DON'T need to be done each time 1699 mAudioMixer->setBufferProvider(track); 1700 mAudioMixer->enable(AudioMixer::MIXING); 1701 1702 mAudioMixer->setParameter(param, AudioMixer::VOLUME0, (void *)left); 1703 mAudioMixer->setParameter(param, AudioMixer::VOLUME1, (void *)right); 1704 mAudioMixer->setParameter(param, AudioMixer::AUXLEVEL, (void *)aux); 1705 mAudioMixer->setParameter( 1706 AudioMixer::TRACK, 1707 AudioMixer::FORMAT, (void *)track->format()); 1708 mAudioMixer->setParameter( 1709 AudioMixer::TRACK, 1710 AudioMixer::CHANNEL_COUNT, (void *)track->channelCount()); 1711 mAudioMixer->setParameter( 1712 AudioMixer::RESAMPLE, 1713 AudioMixer::SAMPLE_RATE, 1714 (void *)(cblk->sampleRate)); 1715 mAudioMixer->setParameter( 1716 AudioMixer::TRACK, 1717 AudioMixer::MAIN_BUFFER, (void *)track->mainBuffer()); 1718 mAudioMixer->setParameter( 1719 AudioMixer::TRACK, 1720 AudioMixer::AUX_BUFFER, (void *)track->auxBuffer()); 1721 1722 // reset retry count 1723 track->mRetryCount = kMaxTrackRetries; 1724 mixerStatus = MIXER_TRACKS_READY; 1725 } else { 1726 //LOGV("track %d u=%08x, s=%08x [NOT READY] on thread %p", track->name(), cblk->user, cblk->server, this); 1727 if (track->isStopped()) { 1728 track->reset(); 1729 } 1730 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 1731 // We have consumed all the buffers of this track. 1732 // Remove it from the list of active tracks. 1733 tracksToRemove->add(track); 1734 } else { 1735 // No buffers for this track. Give it a few chances to 1736 // fill a buffer, then remove it from active list. 1737 if (--(track->mRetryCount) <= 0) { 1738 LOGV("BUFFER TIMEOUT: remove(%d) from active list on thread %p", track->name(), this); 1739 tracksToRemove->add(track); 1740 // indicate to client process that the track was disabled because of underrun 1741 { 1742 AutoMutex _l(cblk->lock); 1743 cblk->flags |= CBLK_DISABLED_ON; 1744 } 1745 } else if (mixerStatus != MIXER_TRACKS_READY) { 1746 mixerStatus = MIXER_TRACKS_ENABLED; 1747 } 1748 } 1749 mAudioMixer->disable(AudioMixer::MIXING); 1750 } 1751 } 1752 1753 // remove all the tracks that need to be... 1754 count = tracksToRemove->size(); 1755 if (UNLIKELY(count)) { 1756 for (size_t i=0 ; i<count ; i++) { 1757 const sp<Track>& track = tracksToRemove->itemAt(i); 1758 mActiveTracks.remove(track); 1759 if (track->mainBuffer() != mMixBuffer) { 1760 chain = getEffectChain_l(track->sessionId()); 1761 if (chain != 0) { 1762 LOGV("stopping track on chain %p for session Id: %d", chain.get(), track->sessionId()); 1763 chain->stopTrack(); 1764 } 1765 } 1766 if (track->isTerminated()) { 1767 mTracks.remove(track); 1768 deleteTrackName_l(track->mName); 1769 } 1770 } 1771 } 1772 1773 // mix buffer must be cleared if all tracks are connected to an 1774 // effect chain as in this case the mixer will not write to 1775 // mix buffer and track effects will accumulate into it 1776 if (mixedTracks != 0 && mixedTracks == tracksWithEffect) { 1777 memset(mMixBuffer, 0, mFrameCount * mChannelCount * sizeof(int16_t)); 1778 } 1779 1780 return mixerStatus; 1781} 1782 1783void AudioFlinger::MixerThread::invalidateTracks(int streamType) 1784{ 1785 LOGV ("MixerThread::invalidateTracks() mixer %p, streamType %d, mTracks.size %d", 1786 this, streamType, mTracks.size()); 1787 Mutex::Autolock _l(mLock); 1788 1789 size_t size = mTracks.size(); 1790 for (size_t i = 0; i < size; i++) { 1791 sp<Track> t = mTracks[i]; 1792 if (t->type() == streamType) { 1793 AutoMutex _lcblk(t->mCblk->lock); 1794 t->mCblk->flags |= CBLK_INVALID_ON; 1795 t->mCblk->cv.signal(); 1796 } 1797 } 1798} 1799 1800 1801// getTrackName_l() must be called with ThreadBase::mLock held 1802int AudioFlinger::MixerThread::getTrackName_l() 1803{ 1804 return mAudioMixer->getTrackName(); 1805} 1806 1807// deleteTrackName_l() must be called with ThreadBase::mLock held 1808void AudioFlinger::MixerThread::deleteTrackName_l(int name) 1809{ 1810 LOGV("remove track (%d) and delete from mixer", name); 1811 mAudioMixer->deleteTrackName(name); 1812} 1813 1814// checkForNewParameters_l() must be called with ThreadBase::mLock held 1815bool AudioFlinger::MixerThread::checkForNewParameters_l() 1816{ 1817 bool reconfig = false; 1818 1819 while (!mNewParameters.isEmpty()) { 1820 status_t status = NO_ERROR; 1821 String8 keyValuePair = mNewParameters[0]; 1822 AudioParameter param = AudioParameter(keyValuePair); 1823 int value; 1824 1825 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 1826 reconfig = true; 1827 } 1828 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 1829 if (value != AudioSystem::PCM_16_BIT) { 1830 status = BAD_VALUE; 1831 } else { 1832 reconfig = true; 1833 } 1834 } 1835 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 1836 if (value != AudioSystem::CHANNEL_OUT_STEREO) { 1837 status = BAD_VALUE; 1838 } else { 1839 reconfig = true; 1840 } 1841 } 1842 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 1843 // do not accept frame count changes if tracks are open as the track buffer 1844 // size depends on frame count and correct behavior would not be garantied 1845 // if frame count is changed after track creation 1846 if (!mTracks.isEmpty()) { 1847 status = INVALID_OPERATION; 1848 } else { 1849 reconfig = true; 1850 } 1851 } 1852 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 1853 // when changing the audio output device, call addBatteryData to notify 1854 // the change 1855 if (mDevice != value) { 1856 uint32_t params = 0; 1857 // check whether speaker is on 1858 if (value & AudioSystem::DEVICE_OUT_SPEAKER) { 1859 params |= IMediaPlayerService::kBatteryDataSpeakerOn; 1860 } 1861 1862 int deviceWithoutSpeaker 1863 = AudioSystem::DEVICE_OUT_ALL & ~AudioSystem::DEVICE_OUT_SPEAKER; 1864 // check if any other device (except speaker) is on 1865 if (value & deviceWithoutSpeaker ) { 1866 params |= IMediaPlayerService::kBatteryDataOtherAudioDeviceOn; 1867 } 1868 1869 if (params != 0) { 1870 addBatteryData(params); 1871 } 1872 } 1873 1874 // forward device change to effects that have requested to be 1875 // aware of attached audio device. 1876 mDevice = (uint32_t)value; 1877 for (size_t i = 0; i < mEffectChains.size(); i++) { 1878 mEffectChains[i]->setDevice_l(mDevice); 1879 } 1880 } 1881 1882 if (status == NO_ERROR) { 1883 status = mOutput->setParameters(keyValuePair); 1884 if (!mStandby && status == INVALID_OPERATION) { 1885 mOutput->standby(); 1886 mStandby = true; 1887 mBytesWritten = 0; 1888 status = mOutput->setParameters(keyValuePair); 1889 } 1890 if (status == NO_ERROR && reconfig) { 1891 delete mAudioMixer; 1892 readOutputParameters(); 1893 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 1894 for (size_t i = 0; i < mTracks.size() ; i++) { 1895 int name = getTrackName_l(); 1896 if (name < 0) break; 1897 mTracks[i]->mName = name; 1898 // limit track sample rate to 2 x new output sample rate 1899 if (mTracks[i]->mCblk->sampleRate > 2 * sampleRate()) { 1900 mTracks[i]->mCblk->sampleRate = 2 * sampleRate(); 1901 } 1902 } 1903 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 1904 } 1905 } 1906 1907 mNewParameters.removeAt(0); 1908 1909 mParamStatus = status; 1910 mParamCond.signal(); 1911 mWaitWorkCV.wait(mLock); 1912 } 1913 return reconfig; 1914} 1915 1916status_t AudioFlinger::MixerThread::dumpInternals(int fd, const Vector<String16>& args) 1917{ 1918 const size_t SIZE = 256; 1919 char buffer[SIZE]; 1920 String8 result; 1921 1922 PlaybackThread::dumpInternals(fd, args); 1923 1924 snprintf(buffer, SIZE, "AudioMixer tracks: %08x\n", mAudioMixer->trackNames()); 1925 result.append(buffer); 1926 write(fd, result.string(), result.size()); 1927 return NO_ERROR; 1928} 1929 1930uint32_t AudioFlinger::MixerThread::activeSleepTimeUs() 1931{ 1932 return (uint32_t)(mOutput->latency() * 1000) / 2; 1933} 1934 1935uint32_t AudioFlinger::MixerThread::idleSleepTimeUs() 1936{ 1937 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 1938} 1939 1940uint32_t AudioFlinger::MixerThread::suspendSleepTimeUs() 1941{ 1942 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 1943} 1944 1945// ---------------------------------------------------------------------------- 1946AudioFlinger::DirectOutputThread::DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 1947 : PlaybackThread(audioFlinger, output, id, device) 1948{ 1949 mType = PlaybackThread::DIRECT; 1950} 1951 1952AudioFlinger::DirectOutputThread::~DirectOutputThread() 1953{ 1954} 1955 1956 1957static inline int16_t clamp16(int32_t sample) 1958{ 1959 if ((sample>>15) ^ (sample>>31)) 1960 sample = 0x7FFF ^ (sample>>31); 1961 return sample; 1962} 1963 1964static inline 1965int32_t mul(int16_t in, int16_t v) 1966{ 1967#if defined(__arm__) && !defined(__thumb__) 1968 int32_t out; 1969 asm( "smulbb %[out], %[in], %[v] \n" 1970 : [out]"=r"(out) 1971 : [in]"%r"(in), [v]"r"(v) 1972 : ); 1973 return out; 1974#else 1975 return in * int32_t(v); 1976#endif 1977} 1978 1979void AudioFlinger::DirectOutputThread::applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp) 1980{ 1981 // Do not apply volume on compressed audio 1982 if (!AudioSystem::isLinearPCM(mFormat)) { 1983 return; 1984 } 1985 1986 // convert to signed 16 bit before volume calculation 1987 if (mFormat == AudioSystem::PCM_8_BIT) { 1988 size_t count = mFrameCount * mChannelCount; 1989 uint8_t *src = (uint8_t *)mMixBuffer + count-1; 1990 int16_t *dst = mMixBuffer + count-1; 1991 while(count--) { 1992 *dst-- = (int16_t)(*src--^0x80) << 8; 1993 } 1994 } 1995 1996 size_t frameCount = mFrameCount; 1997 int16_t *out = mMixBuffer; 1998 if (ramp) { 1999 if (mChannelCount == 1) { 2000 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2001 int32_t vlInc = d / (int32_t)frameCount; 2002 int32_t vl = ((int32_t)mLeftVolShort << 16); 2003 do { 2004 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2005 out++; 2006 vl += vlInc; 2007 } while (--frameCount); 2008 2009 } else { 2010 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2011 int32_t vlInc = d / (int32_t)frameCount; 2012 d = ((int32_t)rightVol - (int32_t)mRightVolShort) << 16; 2013 int32_t vrInc = d / (int32_t)frameCount; 2014 int32_t vl = ((int32_t)mLeftVolShort << 16); 2015 int32_t vr = ((int32_t)mRightVolShort << 16); 2016 do { 2017 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2018 out[1] = clamp16(mul(out[1], vr >> 16) >> 12); 2019 out += 2; 2020 vl += vlInc; 2021 vr += vrInc; 2022 } while (--frameCount); 2023 } 2024 } else { 2025 if (mChannelCount == 1) { 2026 do { 2027 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2028 out++; 2029 } while (--frameCount); 2030 } else { 2031 do { 2032 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2033 out[1] = clamp16(mul(out[1], rightVol) >> 12); 2034 out += 2; 2035 } while (--frameCount); 2036 } 2037 } 2038 2039 // convert back to unsigned 8 bit after volume calculation 2040 if (mFormat == AudioSystem::PCM_8_BIT) { 2041 size_t count = mFrameCount * mChannelCount; 2042 int16_t *src = mMixBuffer; 2043 uint8_t *dst = (uint8_t *)mMixBuffer; 2044 while(count--) { 2045 *dst++ = (uint8_t)(((int32_t)*src++ + (1<<7)) >> 8)^0x80; 2046 } 2047 } 2048 2049 mLeftVolShort = leftVol; 2050 mRightVolShort = rightVol; 2051} 2052 2053bool AudioFlinger::DirectOutputThread::threadLoop() 2054{ 2055 uint32_t mixerStatus = MIXER_IDLE; 2056 sp<Track> trackToRemove; 2057 sp<Track> activeTrack; 2058 nsecs_t standbyTime = systemTime(); 2059 int8_t *curBuf; 2060 size_t mixBufferSize = mFrameCount*mFrameSize; 2061 uint32_t activeSleepTime = activeSleepTimeUs(); 2062 uint32_t idleSleepTime = idleSleepTimeUs(); 2063 uint32_t sleepTime = idleSleepTime; 2064 // use shorter standby delay as on normal output to release 2065 // hardware resources as soon as possible 2066 nsecs_t standbyDelay = microseconds(activeSleepTime*2); 2067 2068 while (!exitPending()) 2069 { 2070 bool rampVolume; 2071 uint16_t leftVol; 2072 uint16_t rightVol; 2073 Vector< sp<EffectChain> > effectChains; 2074 2075 processConfigEvents(); 2076 2077 mixerStatus = MIXER_IDLE; 2078 2079 { // scope for the mLock 2080 2081 Mutex::Autolock _l(mLock); 2082 2083 if (checkForNewParameters_l()) { 2084 mixBufferSize = mFrameCount*mFrameSize; 2085 activeSleepTime = activeSleepTimeUs(); 2086 idleSleepTime = idleSleepTimeUs(); 2087 standbyDelay = microseconds(activeSleepTime*2); 2088 } 2089 2090 // put audio hardware into standby after short delay 2091 if UNLIKELY((!mActiveTracks.size() && systemTime() > standbyTime) || 2092 mSuspended) { 2093 // wait until we have something to do... 2094 if (!mStandby) { 2095 LOGV("Audio hardware entering standby, mixer %p\n", this); 2096 mOutput->standby(); 2097 mStandby = true; 2098 mBytesWritten = 0; 2099 } 2100 2101 if (!mActiveTracks.size() && mConfigEvents.isEmpty()) { 2102 // we're about to wait, flush the binder command buffer 2103 IPCThreadState::self()->flushCommands(); 2104 2105 if (exitPending()) break; 2106 2107 LOGV("DirectOutputThread %p TID %d going to sleep\n", this, gettid()); 2108 mWaitWorkCV.wait(mLock); 2109 LOGV("DirectOutputThread %p TID %d waking up in active mode\n", this, gettid()); 2110 2111 if (mMasterMute == false) { 2112 char value[PROPERTY_VALUE_MAX]; 2113 property_get("ro.audio.silent", value, "0"); 2114 if (atoi(value)) { 2115 LOGD("Silence is golden"); 2116 setMasterMute(true); 2117 } 2118 } 2119 2120 standbyTime = systemTime() + standbyDelay; 2121 sleepTime = idleSleepTime; 2122 continue; 2123 } 2124 } 2125 2126 effectChains = mEffectChains; 2127 2128 // find out which tracks need to be processed 2129 if (mActiveTracks.size() != 0) { 2130 sp<Track> t = mActiveTracks[0].promote(); 2131 if (t == 0) continue; 2132 2133 Track* const track = t.get(); 2134 audio_track_cblk_t* cblk = track->cblk(); 2135 2136 // The first time a track is added we wait 2137 // for all its buffers to be filled before processing it 2138 if (cblk->framesReady() && track->isReady() && 2139 !track->isPaused() && !track->isTerminated()) 2140 { 2141 //LOGV("track %d u=%08x, s=%08x [OK]", track->name(), cblk->user, cblk->server); 2142 2143 if (track->mFillingUpStatus == Track::FS_FILLED) { 2144 track->mFillingUpStatus = Track::FS_ACTIVE; 2145 mLeftVolFloat = mRightVolFloat = 0; 2146 mLeftVolShort = mRightVolShort = 0; 2147 if (track->mState == TrackBase::RESUMING) { 2148 track->mState = TrackBase::ACTIVE; 2149 rampVolume = true; 2150 } 2151 } else if (cblk->server != 0) { 2152 // If the track is stopped before the first frame was mixed, 2153 // do not apply ramp 2154 rampVolume = true; 2155 } 2156 // compute volume for this track 2157 float left, right; 2158 if (track->isMuted() || mMasterMute || track->isPausing() || 2159 mStreamTypes[track->type()].mute) { 2160 left = right = 0; 2161 if (track->isPausing()) { 2162 track->setPaused(); 2163 } 2164 } else { 2165 float typeVolume = mStreamTypes[track->type()].volume; 2166 float v = mMasterVolume * typeVolume; 2167 float v_clamped = v * cblk->volume[0]; 2168 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2169 left = v_clamped/MAX_GAIN; 2170 v_clamped = v * cblk->volume[1]; 2171 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2172 right = v_clamped/MAX_GAIN; 2173 } 2174 2175 if (left != mLeftVolFloat || right != mRightVolFloat) { 2176 mLeftVolFloat = left; 2177 mRightVolFloat = right; 2178 2179 // If audio HAL implements volume control, 2180 // force software volume to nominal value 2181 if (mOutput->setVolume(left, right) == NO_ERROR) { 2182 left = 1.0f; 2183 right = 1.0f; 2184 } 2185 2186 // Convert volumes from float to 8.24 2187 uint32_t vl = (uint32_t)(left * (1 << 24)); 2188 uint32_t vr = (uint32_t)(right * (1 << 24)); 2189 2190 // Delegate volume control to effect in track effect chain if needed 2191 // only one effect chain can be present on DirectOutputThread, so if 2192 // there is one, the track is connected to it 2193 if (!effectChains.isEmpty()) { 2194 // Do not ramp volume if volume is controlled by effect 2195 if(effectChains[0]->setVolume_l(&vl, &vr)) { 2196 rampVolume = false; 2197 } 2198 } 2199 2200 // Convert volumes from 8.24 to 4.12 format 2201 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 2202 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2203 leftVol = (uint16_t)v_clamped; 2204 v_clamped = (vr + (1 << 11)) >> 12; 2205 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2206 rightVol = (uint16_t)v_clamped; 2207 } else { 2208 leftVol = mLeftVolShort; 2209 rightVol = mRightVolShort; 2210 rampVolume = false; 2211 } 2212 2213 // reset retry count 2214 track->mRetryCount = kMaxTrackRetriesDirect; 2215 activeTrack = t; 2216 mixerStatus = MIXER_TRACKS_READY; 2217 } else { 2218 //LOGV("track %d u=%08x, s=%08x [NOT READY]", track->name(), cblk->user, cblk->server); 2219 if (track->isStopped()) { 2220 track->reset(); 2221 } 2222 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 2223 // We have consumed all the buffers of this track. 2224 // Remove it from the list of active tracks. 2225 trackToRemove = track; 2226 } else { 2227 // No buffers for this track. Give it a few chances to 2228 // fill a buffer, then remove it from active list. 2229 if (--(track->mRetryCount) <= 0) { 2230 LOGV("BUFFER TIMEOUT: remove(%d) from active list", track->name()); 2231 trackToRemove = track; 2232 } else { 2233 mixerStatus = MIXER_TRACKS_ENABLED; 2234 } 2235 } 2236 } 2237 } 2238 2239 // remove all the tracks that need to be... 2240 if (UNLIKELY(trackToRemove != 0)) { 2241 mActiveTracks.remove(trackToRemove); 2242 if (!effectChains.isEmpty()) { 2243 LOGV("stopping track on chain %p for session Id: %d", effectChains[0].get(), 2244 trackToRemove->sessionId()); 2245 effectChains[0]->stopTrack(); 2246 } 2247 if (trackToRemove->isTerminated()) { 2248 mTracks.remove(trackToRemove); 2249 deleteTrackName_l(trackToRemove->mName); 2250 } 2251 } 2252 2253 lockEffectChains_l(effectChains); 2254 } 2255 2256 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2257 AudioBufferProvider::Buffer buffer; 2258 size_t frameCount = mFrameCount; 2259 curBuf = (int8_t *)mMixBuffer; 2260 // output audio to hardware 2261 while (frameCount) { 2262 buffer.frameCount = frameCount; 2263 activeTrack->getNextBuffer(&buffer); 2264 if (UNLIKELY(buffer.raw == 0)) { 2265 memset(curBuf, 0, frameCount * mFrameSize); 2266 break; 2267 } 2268 memcpy(curBuf, buffer.raw, buffer.frameCount * mFrameSize); 2269 frameCount -= buffer.frameCount; 2270 curBuf += buffer.frameCount * mFrameSize; 2271 activeTrack->releaseBuffer(&buffer); 2272 } 2273 sleepTime = 0; 2274 standbyTime = systemTime() + standbyDelay; 2275 } else { 2276 if (sleepTime == 0) { 2277 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2278 sleepTime = activeSleepTime; 2279 } else { 2280 sleepTime = idleSleepTime; 2281 } 2282 } else if (mBytesWritten != 0 && AudioSystem::isLinearPCM(mFormat)) { 2283 memset (mMixBuffer, 0, mFrameCount * mFrameSize); 2284 sleepTime = 0; 2285 } 2286 } 2287 2288 if (mSuspended) { 2289 sleepTime = suspendSleepTimeUs(); 2290 } 2291 // sleepTime == 0 means we must write to audio hardware 2292 if (sleepTime == 0) { 2293 if (mixerStatus == MIXER_TRACKS_READY) { 2294 applyVolume(leftVol, rightVol, rampVolume); 2295 } 2296 for (size_t i = 0; i < effectChains.size(); i ++) { 2297 effectChains[i]->process_l(); 2298 } 2299 unlockEffectChains(effectChains); 2300 2301 mLastWriteTime = systemTime(); 2302 mInWrite = true; 2303 mBytesWritten += mixBufferSize; 2304 int bytesWritten = (int)mOutput->write(mMixBuffer, mixBufferSize); 2305 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 2306 mNumWrites++; 2307 mInWrite = false; 2308 mStandby = false; 2309 } else { 2310 unlockEffectChains(effectChains); 2311 usleep(sleepTime); 2312 } 2313 2314 // finally let go of removed track, without the lock held 2315 // since we can't guarantee the destructors won't acquire that 2316 // same lock. 2317 trackToRemove.clear(); 2318 activeTrack.clear(); 2319 2320 // Effect chains will be actually deleted here if they were removed from 2321 // mEffectChains list during mixing or effects processing 2322 effectChains.clear(); 2323 } 2324 2325 if (!mStandby) { 2326 mOutput->standby(); 2327 } 2328 2329 LOGV("DirectOutputThread %p exiting", this); 2330 return false; 2331} 2332 2333// getTrackName_l() must be called with ThreadBase::mLock held 2334int AudioFlinger::DirectOutputThread::getTrackName_l() 2335{ 2336 return 0; 2337} 2338 2339// deleteTrackName_l() must be called with ThreadBase::mLock held 2340void AudioFlinger::DirectOutputThread::deleteTrackName_l(int name) 2341{ 2342} 2343 2344// checkForNewParameters_l() must be called with ThreadBase::mLock held 2345bool AudioFlinger::DirectOutputThread::checkForNewParameters_l() 2346{ 2347 bool reconfig = false; 2348 2349 while (!mNewParameters.isEmpty()) { 2350 status_t status = NO_ERROR; 2351 String8 keyValuePair = mNewParameters[0]; 2352 AudioParameter param = AudioParameter(keyValuePair); 2353 int value; 2354 2355 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 2356 // do not accept frame count changes if tracks are open as the track buffer 2357 // size depends on frame count and correct behavior would not be garantied 2358 // if frame count is changed after track creation 2359 if (!mTracks.isEmpty()) { 2360 status = INVALID_OPERATION; 2361 } else { 2362 reconfig = true; 2363 } 2364 } 2365 if (status == NO_ERROR) { 2366 status = mOutput->setParameters(keyValuePair); 2367 if (!mStandby && status == INVALID_OPERATION) { 2368 mOutput->standby(); 2369 mStandby = true; 2370 mBytesWritten = 0; 2371 status = mOutput->setParameters(keyValuePair); 2372 } 2373 if (status == NO_ERROR && reconfig) { 2374 readOutputParameters(); 2375 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2376 } 2377 } 2378 2379 mNewParameters.removeAt(0); 2380 2381 mParamStatus = status; 2382 mParamCond.signal(); 2383 mWaitWorkCV.wait(mLock); 2384 } 2385 return reconfig; 2386} 2387 2388uint32_t AudioFlinger::DirectOutputThread::activeSleepTimeUs() 2389{ 2390 uint32_t time; 2391 if (AudioSystem::isLinearPCM(mFormat)) { 2392 time = (uint32_t)(mOutput->latency() * 1000) / 2; 2393 } else { 2394 time = 10000; 2395 } 2396 return time; 2397} 2398 2399uint32_t AudioFlinger::DirectOutputThread::idleSleepTimeUs() 2400{ 2401 uint32_t time; 2402 if (AudioSystem::isLinearPCM(mFormat)) { 2403 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2404 } else { 2405 time = 10000; 2406 } 2407 return time; 2408} 2409 2410uint32_t AudioFlinger::DirectOutputThread::suspendSleepTimeUs() 2411{ 2412 uint32_t time; 2413 if (AudioSystem::isLinearPCM(mFormat)) { 2414 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2415 } else { 2416 time = 10000; 2417 } 2418 return time; 2419} 2420 2421 2422// ---------------------------------------------------------------------------- 2423 2424AudioFlinger::DuplicatingThread::DuplicatingThread(const sp<AudioFlinger>& audioFlinger, AudioFlinger::MixerThread* mainThread, int id) 2425 : MixerThread(audioFlinger, mainThread->getOutput(), id, mainThread->device()), mWaitTimeMs(UINT_MAX) 2426{ 2427 mType = PlaybackThread::DUPLICATING; 2428 addOutputTrack(mainThread); 2429} 2430 2431AudioFlinger::DuplicatingThread::~DuplicatingThread() 2432{ 2433 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2434 mOutputTracks[i]->destroy(); 2435 } 2436 mOutputTracks.clear(); 2437} 2438 2439bool AudioFlinger::DuplicatingThread::threadLoop() 2440{ 2441 Vector< sp<Track> > tracksToRemove; 2442 uint32_t mixerStatus = MIXER_IDLE; 2443 nsecs_t standbyTime = systemTime(); 2444 size_t mixBufferSize = mFrameCount*mFrameSize; 2445 SortedVector< sp<OutputTrack> > outputTracks; 2446 uint32_t writeFrames = 0; 2447 uint32_t activeSleepTime = activeSleepTimeUs(); 2448 uint32_t idleSleepTime = idleSleepTimeUs(); 2449 uint32_t sleepTime = idleSleepTime; 2450 Vector< sp<EffectChain> > effectChains; 2451 2452 while (!exitPending()) 2453 { 2454 processConfigEvents(); 2455 2456 mixerStatus = MIXER_IDLE; 2457 { // scope for the mLock 2458 2459 Mutex::Autolock _l(mLock); 2460 2461 if (checkForNewParameters_l()) { 2462 mixBufferSize = mFrameCount*mFrameSize; 2463 updateWaitTime(); 2464 activeSleepTime = activeSleepTimeUs(); 2465 idleSleepTime = idleSleepTimeUs(); 2466 } 2467 2468 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 2469 2470 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2471 outputTracks.add(mOutputTracks[i]); 2472 } 2473 2474 // put audio hardware into standby after short delay 2475 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 2476 mSuspended) { 2477 if (!mStandby) { 2478 for (size_t i = 0; i < outputTracks.size(); i++) { 2479 outputTracks[i]->stop(); 2480 } 2481 mStandby = true; 2482 mBytesWritten = 0; 2483 } 2484 2485 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 2486 // we're about to wait, flush the binder command buffer 2487 IPCThreadState::self()->flushCommands(); 2488 outputTracks.clear(); 2489 2490 if (exitPending()) break; 2491 2492 LOGV("DuplicatingThread %p TID %d going to sleep\n", this, gettid()); 2493 mWaitWorkCV.wait(mLock); 2494 LOGV("DuplicatingThread %p TID %d waking up\n", this, gettid()); 2495 if (mMasterMute == false) { 2496 char value[PROPERTY_VALUE_MAX]; 2497 property_get("ro.audio.silent", value, "0"); 2498 if (atoi(value)) { 2499 LOGD("Silence is golden"); 2500 setMasterMute(true); 2501 } 2502 } 2503 2504 standbyTime = systemTime() + kStandbyTimeInNsecs; 2505 sleepTime = idleSleepTime; 2506 continue; 2507 } 2508 } 2509 2510 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 2511 2512 // prevent any changes in effect chain list and in each effect chain 2513 // during mixing and effect process as the audio buffers could be deleted 2514 // or modified if an effect is created or deleted 2515 lockEffectChains_l(effectChains); 2516 } 2517 2518 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2519 // mix buffers... 2520 if (outputsReady(outputTracks)) { 2521 mAudioMixer->process(); 2522 } else { 2523 memset(mMixBuffer, 0, mixBufferSize); 2524 } 2525 sleepTime = 0; 2526 writeFrames = mFrameCount; 2527 } else { 2528 if (sleepTime == 0) { 2529 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2530 sleepTime = activeSleepTime; 2531 } else { 2532 sleepTime = idleSleepTime; 2533 } 2534 } else if (mBytesWritten != 0) { 2535 // flush remaining overflow buffers in output tracks 2536 for (size_t i = 0; i < outputTracks.size(); i++) { 2537 if (outputTracks[i]->isActive()) { 2538 sleepTime = 0; 2539 writeFrames = 0; 2540 memset(mMixBuffer, 0, mixBufferSize); 2541 break; 2542 } 2543 } 2544 } 2545 } 2546 2547 if (mSuspended) { 2548 sleepTime = suspendSleepTimeUs(); 2549 } 2550 // sleepTime == 0 means we must write to audio hardware 2551 if (sleepTime == 0) { 2552 for (size_t i = 0; i < effectChains.size(); i ++) { 2553 effectChains[i]->process_l(); 2554 } 2555 // enable changes in effect chain 2556 unlockEffectChains(effectChains); 2557 2558 standbyTime = systemTime() + kStandbyTimeInNsecs; 2559 for (size_t i = 0; i < outputTracks.size(); i++) { 2560 outputTracks[i]->write(mMixBuffer, writeFrames); 2561 } 2562 mStandby = false; 2563 mBytesWritten += mixBufferSize; 2564 } else { 2565 // enable changes in effect chain 2566 unlockEffectChains(effectChains); 2567 usleep(sleepTime); 2568 } 2569 2570 // finally let go of all our tracks, without the lock held 2571 // since we can't guarantee the destructors won't acquire that 2572 // same lock. 2573 tracksToRemove.clear(); 2574 outputTracks.clear(); 2575 2576 // Effect chains will be actually deleted here if they were removed from 2577 // mEffectChains list during mixing or effects processing 2578 effectChains.clear(); 2579 } 2580 2581 return false; 2582} 2583 2584void AudioFlinger::DuplicatingThread::addOutputTrack(MixerThread *thread) 2585{ 2586 int frameCount = (3 * mFrameCount * mSampleRate) / thread->sampleRate(); 2587 OutputTrack *outputTrack = new OutputTrack((ThreadBase *)thread, 2588 this, 2589 mSampleRate, 2590 mFormat, 2591 mChannelCount, 2592 frameCount); 2593 if (outputTrack->cblk() != NULL) { 2594 thread->setStreamVolume(AudioSystem::NUM_STREAM_TYPES, 1.0f); 2595 mOutputTracks.add(outputTrack); 2596 LOGV("addOutputTrack() track %p, on thread %p", outputTrack, thread); 2597 updateWaitTime(); 2598 } 2599} 2600 2601void AudioFlinger::DuplicatingThread::removeOutputTrack(MixerThread *thread) 2602{ 2603 Mutex::Autolock _l(mLock); 2604 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2605 if (mOutputTracks[i]->thread() == (ThreadBase *)thread) { 2606 mOutputTracks[i]->destroy(); 2607 mOutputTracks.removeAt(i); 2608 updateWaitTime(); 2609 return; 2610 } 2611 } 2612 LOGV("removeOutputTrack(): unkonwn thread: %p", thread); 2613} 2614 2615void AudioFlinger::DuplicatingThread::updateWaitTime() 2616{ 2617 mWaitTimeMs = UINT_MAX; 2618 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2619 sp<ThreadBase> strong = mOutputTracks[i]->thread().promote(); 2620 if (strong != NULL) { 2621 uint32_t waitTimeMs = (strong->frameCount() * 2 * 1000) / strong->sampleRate(); 2622 if (waitTimeMs < mWaitTimeMs) { 2623 mWaitTimeMs = waitTimeMs; 2624 } 2625 } 2626 } 2627} 2628 2629 2630bool AudioFlinger::DuplicatingThread::outputsReady(SortedVector< sp<OutputTrack> > &outputTracks) 2631{ 2632 for (size_t i = 0; i < outputTracks.size(); i++) { 2633 sp <ThreadBase> thread = outputTracks[i]->thread().promote(); 2634 if (thread == 0) { 2635 LOGW("DuplicatingThread::outputsReady() could not promote thread on output track %p", outputTracks[i].get()); 2636 return false; 2637 } 2638 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 2639 if (playbackThread->standby() && !playbackThread->isSuspended()) { 2640 LOGV("DuplicatingThread output track %p on thread %p Not Ready", outputTracks[i].get(), thread.get()); 2641 return false; 2642 } 2643 } 2644 return true; 2645} 2646 2647uint32_t AudioFlinger::DuplicatingThread::activeSleepTimeUs() 2648{ 2649 return (mWaitTimeMs * 1000) / 2; 2650} 2651 2652// ---------------------------------------------------------------------------- 2653 2654// TrackBase constructor must be called with AudioFlinger::mLock held 2655AudioFlinger::ThreadBase::TrackBase::TrackBase( 2656 const wp<ThreadBase>& thread, 2657 const sp<Client>& client, 2658 uint32_t sampleRate, 2659 int format, 2660 int channelCount, 2661 int frameCount, 2662 uint32_t flags, 2663 const sp<IMemory>& sharedBuffer, 2664 int sessionId) 2665 : RefBase(), 2666 mThread(thread), 2667 mClient(client), 2668 mCblk(0), 2669 mFrameCount(0), 2670 mState(IDLE), 2671 mClientTid(-1), 2672 mFormat(format), 2673 mFlags(flags & ~SYSTEM_FLAGS_MASK), 2674 mSessionId(sessionId) 2675{ 2676 LOGV_IF(sharedBuffer != 0, "sharedBuffer: %p, size: %d", sharedBuffer->pointer(), sharedBuffer->size()); 2677 2678 // LOGD("Creating track with %d buffers @ %d bytes", bufferCount, bufferSize); 2679 size_t size = sizeof(audio_track_cblk_t); 2680 size_t bufferSize = frameCount*channelCount*sizeof(int16_t); 2681 if (sharedBuffer == 0) { 2682 size += bufferSize; 2683 } 2684 2685 if (client != NULL) { 2686 mCblkMemory = client->heap()->allocate(size); 2687 if (mCblkMemory != 0) { 2688 mCblk = static_cast<audio_track_cblk_t *>(mCblkMemory->pointer()); 2689 if (mCblk) { // construct the shared structure in-place. 2690 new(mCblk) audio_track_cblk_t(); 2691 // clear all buffers 2692 mCblk->frameCount = frameCount; 2693 mCblk->sampleRate = sampleRate; 2694 mCblk->channelCount = (uint8_t)channelCount; 2695 if (sharedBuffer == 0) { 2696 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 2697 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 2698 // Force underrun condition to avoid false underrun callback until first data is 2699 // written to buffer (other flags are cleared) 2700 mCblk->flags = CBLK_UNDERRUN_ON; 2701 } else { 2702 mBuffer = sharedBuffer->pointer(); 2703 } 2704 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 2705 } 2706 } else { 2707 LOGE("not enough memory for AudioTrack size=%u", size); 2708 client->heap()->dump("AudioTrack"); 2709 return; 2710 } 2711 } else { 2712 mCblk = (audio_track_cblk_t *)(new uint8_t[size]); 2713 if (mCblk) { // construct the shared structure in-place. 2714 new(mCblk) audio_track_cblk_t(); 2715 // clear all buffers 2716 mCblk->frameCount = frameCount; 2717 mCblk->sampleRate = sampleRate; 2718 mCblk->channelCount = (uint8_t)channelCount; 2719 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 2720 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 2721 // Force underrun condition to avoid false underrun callback until first data is 2722 // written to buffer (other flags are cleared) 2723 mCblk->flags = CBLK_UNDERRUN_ON; 2724 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 2725 } 2726 } 2727} 2728 2729AudioFlinger::ThreadBase::TrackBase::~TrackBase() 2730{ 2731 if (mCblk) { 2732 mCblk->~audio_track_cblk_t(); // destroy our shared-structure. 2733 if (mClient == NULL) { 2734 delete mCblk; 2735 } 2736 } 2737 mCblkMemory.clear(); // and free the shared memory 2738 if (mClient != NULL) { 2739 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 2740 mClient.clear(); 2741 } 2742} 2743 2744void AudioFlinger::ThreadBase::TrackBase::releaseBuffer(AudioBufferProvider::Buffer* buffer) 2745{ 2746 buffer->raw = 0; 2747 mFrameCount = buffer->frameCount; 2748 step(); 2749 buffer->frameCount = 0; 2750} 2751 2752bool AudioFlinger::ThreadBase::TrackBase::step() { 2753 bool result; 2754 audio_track_cblk_t* cblk = this->cblk(); 2755 2756 result = cblk->stepServer(mFrameCount); 2757 if (!result) { 2758 LOGV("stepServer failed acquiring cblk mutex"); 2759 mFlags |= STEPSERVER_FAILED; 2760 } 2761 return result; 2762} 2763 2764void AudioFlinger::ThreadBase::TrackBase::reset() { 2765 audio_track_cblk_t* cblk = this->cblk(); 2766 2767 cblk->user = 0; 2768 cblk->server = 0; 2769 cblk->userBase = 0; 2770 cblk->serverBase = 0; 2771 mFlags &= (uint32_t)(~SYSTEM_FLAGS_MASK); 2772 LOGV("TrackBase::reset"); 2773} 2774 2775sp<IMemory> AudioFlinger::ThreadBase::TrackBase::getCblk() const 2776{ 2777 return mCblkMemory; 2778} 2779 2780int AudioFlinger::ThreadBase::TrackBase::sampleRate() const { 2781 return (int)mCblk->sampleRate; 2782} 2783 2784int AudioFlinger::ThreadBase::TrackBase::channelCount() const { 2785 return (int)mCblk->channelCount; 2786} 2787 2788void* AudioFlinger::ThreadBase::TrackBase::getBuffer(uint32_t offset, uint32_t frames) const { 2789 audio_track_cblk_t* cblk = this->cblk(); 2790 int8_t *bufferStart = (int8_t *)mBuffer + (offset-cblk->serverBase)*cblk->frameSize; 2791 int8_t *bufferEnd = bufferStart + frames * cblk->frameSize; 2792 2793 // Check validity of returned pointer in case the track control block would have been corrupted. 2794 if (bufferStart < mBuffer || bufferStart > bufferEnd || bufferEnd > mBufferEnd || 2795 ((unsigned long)bufferStart & (unsigned long)(cblk->frameSize - 1))) { 2796 LOGE("TrackBase::getBuffer buffer out of range:\n start: %p, end %p , mBuffer %p mBufferEnd %p\n \ 2797 server %d, serverBase %d, user %d, userBase %d, channelCount %d", 2798 bufferStart, bufferEnd, mBuffer, mBufferEnd, 2799 cblk->server, cblk->serverBase, cblk->user, cblk->userBase, cblk->channelCount); 2800 return 0; 2801 } 2802 2803 return bufferStart; 2804} 2805 2806// ---------------------------------------------------------------------------- 2807 2808// Track constructor must be called with AudioFlinger::mLock and ThreadBase::mLock held 2809AudioFlinger::PlaybackThread::Track::Track( 2810 const wp<ThreadBase>& thread, 2811 const sp<Client>& client, 2812 int streamType, 2813 uint32_t sampleRate, 2814 int format, 2815 int channelCount, 2816 int frameCount, 2817 const sp<IMemory>& sharedBuffer, 2818 int sessionId) 2819 : TrackBase(thread, client, sampleRate, format, channelCount, frameCount, 0, sharedBuffer, sessionId), 2820 mMute(false), mSharedBuffer(sharedBuffer), mName(-1), mMainBuffer(NULL), mAuxBuffer(NULL), 2821 mAuxEffectId(0), mHasVolumeController(false) 2822{ 2823 if (mCblk != NULL) { 2824 sp<ThreadBase> baseThread = thread.promote(); 2825 if (baseThread != 0) { 2826 PlaybackThread *playbackThread = (PlaybackThread *)baseThread.get(); 2827 mName = playbackThread->getTrackName_l(); 2828 mMainBuffer = playbackThread->mixBuffer(); 2829 } 2830 LOGV("Track constructor name %d, calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 2831 if (mName < 0) { 2832 LOGE("no more track names available"); 2833 } 2834 mVolume[0] = 1.0f; 2835 mVolume[1] = 1.0f; 2836 mStreamType = streamType; 2837 // NOTE: audio_track_cblk_t::frameSize for 8 bit PCM data is based on a sample size of 2838 // 16 bit because data is converted to 16 bit before being stored in buffer by AudioTrack 2839 mCblk->frameSize = AudioSystem::isLinearPCM(format) ? channelCount * sizeof(int16_t) : sizeof(int8_t); 2840 } 2841} 2842 2843AudioFlinger::PlaybackThread::Track::~Track() 2844{ 2845 LOGV("PlaybackThread::Track destructor"); 2846 sp<ThreadBase> thread = mThread.promote(); 2847 if (thread != 0) { 2848 Mutex::Autolock _l(thread->mLock); 2849 mState = TERMINATED; 2850 } 2851} 2852 2853void AudioFlinger::PlaybackThread::Track::destroy() 2854{ 2855 // NOTE: destroyTrack_l() can remove a strong reference to this Track 2856 // by removing it from mTracks vector, so there is a risk that this Tracks's 2857 // desctructor is called. As the destructor needs to lock mLock, 2858 // we must acquire a strong reference on this Track before locking mLock 2859 // here so that the destructor is called only when exiting this function. 2860 // On the other hand, as long as Track::destroy() is only called by 2861 // TrackHandle destructor, the TrackHandle still holds a strong ref on 2862 // this Track with its member mTrack. 2863 sp<Track> keep(this); 2864 { // scope for mLock 2865 sp<ThreadBase> thread = mThread.promote(); 2866 if (thread != 0) { 2867 if (!isOutputTrack()) { 2868 if (mState == ACTIVE || mState == RESUMING) { 2869 AudioSystem::stopOutput(thread->id(), 2870 (AudioSystem::stream_type)mStreamType, 2871 mSessionId); 2872 2873 // to track the speaker usage 2874 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 2875 } 2876 AudioSystem::releaseOutput(thread->id()); 2877 } 2878 Mutex::Autolock _l(thread->mLock); 2879 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 2880 playbackThread->destroyTrack_l(this); 2881 } 2882 } 2883} 2884 2885void AudioFlinger::PlaybackThread::Track::dump(char* buffer, size_t size) 2886{ 2887 snprintf(buffer, size, " %05d %05d %03u %03u %03u %05u %04u %1d %1d %1d %05u %05u %05u 0x%08x 0x%08x 0x%08x 0x%08x\n", 2888 mName - AudioMixer::TRACK0, 2889 (mClient == NULL) ? getpid() : mClient->pid(), 2890 mStreamType, 2891 mFormat, 2892 mCblk->channelCount, 2893 mSessionId, 2894 mFrameCount, 2895 mState, 2896 mMute, 2897 mFillingUpStatus, 2898 mCblk->sampleRate, 2899 mCblk->volume[0], 2900 mCblk->volume[1], 2901 mCblk->server, 2902 mCblk->user, 2903 (int)mMainBuffer, 2904 (int)mAuxBuffer); 2905} 2906 2907status_t AudioFlinger::PlaybackThread::Track::getNextBuffer(AudioBufferProvider::Buffer* buffer) 2908{ 2909 audio_track_cblk_t* cblk = this->cblk(); 2910 uint32_t framesReady; 2911 uint32_t framesReq = buffer->frameCount; 2912 2913 // Check if last stepServer failed, try to step now 2914 if (mFlags & TrackBase::STEPSERVER_FAILED) { 2915 if (!step()) goto getNextBuffer_exit; 2916 LOGV("stepServer recovered"); 2917 mFlags &= ~TrackBase::STEPSERVER_FAILED; 2918 } 2919 2920 framesReady = cblk->framesReady(); 2921 2922 if (LIKELY(framesReady)) { 2923 uint32_t s = cblk->server; 2924 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 2925 2926 bufferEnd = (cblk->loopEnd < bufferEnd) ? cblk->loopEnd : bufferEnd; 2927 if (framesReq > framesReady) { 2928 framesReq = framesReady; 2929 } 2930 if (s + framesReq > bufferEnd) { 2931 framesReq = bufferEnd - s; 2932 } 2933 2934 buffer->raw = getBuffer(s, framesReq); 2935 if (buffer->raw == 0) goto getNextBuffer_exit; 2936 2937 buffer->frameCount = framesReq; 2938 return NO_ERROR; 2939 } 2940 2941getNextBuffer_exit: 2942 buffer->raw = 0; 2943 buffer->frameCount = 0; 2944 LOGV("getNextBuffer() no more data for track %d on thread %p", mName, mThread.unsafe_get()); 2945 return NOT_ENOUGH_DATA; 2946} 2947 2948bool AudioFlinger::PlaybackThread::Track::isReady() const { 2949 if (mFillingUpStatus != FS_FILLING || isStopped() || isPausing()) return true; 2950 2951 if (mCblk->framesReady() >= mCblk->frameCount || 2952 (mCblk->flags & CBLK_FORCEREADY_MSK)) { 2953 AutoMutex _l(mCblk->lock); 2954 mFillingUpStatus = FS_FILLED; 2955 mCblk->flags &= ~CBLK_FORCEREADY_MSK; 2956 return true; 2957 } 2958 return false; 2959} 2960 2961status_t AudioFlinger::PlaybackThread::Track::start() 2962{ 2963 status_t status = NO_ERROR; 2964 LOGV("start(%d), calling thread %d session %d", 2965 mName, IPCThreadState::self()->getCallingPid(), mSessionId); 2966 sp<ThreadBase> thread = mThread.promote(); 2967 if (thread != 0) { 2968 Mutex::Autolock _l(thread->mLock); 2969 int state = mState; 2970 // here the track could be either new, or restarted 2971 // in both cases "unstop" the track 2972 if (mState == PAUSED) { 2973 mState = TrackBase::RESUMING; 2974 LOGV("PAUSED => RESUMING (%d) on thread %p", mName, this); 2975 } else { 2976 mState = TrackBase::ACTIVE; 2977 LOGV("? => ACTIVE (%d) on thread %p", mName, this); 2978 } 2979 2980 if (!isOutputTrack() && state != ACTIVE && state != RESUMING) { 2981 thread->mLock.unlock(); 2982 status = AudioSystem::startOutput(thread->id(), 2983 (AudioSystem::stream_type)mStreamType, 2984 mSessionId); 2985 thread->mLock.lock(); 2986 2987 // to track the speaker usage 2988 if (status == NO_ERROR) { 2989 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStart); 2990 } 2991 } 2992 if (status == NO_ERROR) { 2993 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 2994 playbackThread->addTrack_l(this); 2995 } else { 2996 mState = state; 2997 } 2998 } else { 2999 status = BAD_VALUE; 3000 } 3001 return status; 3002} 3003 3004void AudioFlinger::PlaybackThread::Track::stop() 3005{ 3006 LOGV("stop(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3007 sp<ThreadBase> thread = mThread.promote(); 3008 if (thread != 0) { 3009 Mutex::Autolock _l(thread->mLock); 3010 int state = mState; 3011 if (mState > STOPPED) { 3012 mState = STOPPED; 3013 // If the track is not active (PAUSED and buffers full), flush buffers 3014 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3015 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3016 reset(); 3017 } 3018 LOGV("(> STOPPED) => STOPPED (%d) on thread %p", mName, playbackThread); 3019 } 3020 if (!isOutputTrack() && (state == ACTIVE || state == RESUMING)) { 3021 thread->mLock.unlock(); 3022 AudioSystem::stopOutput(thread->id(), 3023 (AudioSystem::stream_type)mStreamType, 3024 mSessionId); 3025 thread->mLock.lock(); 3026 3027 // to track the speaker usage 3028 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3029 } 3030 } 3031} 3032 3033void AudioFlinger::PlaybackThread::Track::pause() 3034{ 3035 LOGV("pause(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3036 sp<ThreadBase> thread = mThread.promote(); 3037 if (thread != 0) { 3038 Mutex::Autolock _l(thread->mLock); 3039 if (mState == ACTIVE || mState == RESUMING) { 3040 mState = PAUSING; 3041 LOGV("ACTIVE/RESUMING => PAUSING (%d) on thread %p", mName, thread.get()); 3042 if (!isOutputTrack()) { 3043 thread->mLock.unlock(); 3044 AudioSystem::stopOutput(thread->id(), 3045 (AudioSystem::stream_type)mStreamType, 3046 mSessionId); 3047 thread->mLock.lock(); 3048 3049 // to track the speaker usage 3050 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3051 } 3052 } 3053 } 3054} 3055 3056void AudioFlinger::PlaybackThread::Track::flush() 3057{ 3058 LOGV("flush(%d)", mName); 3059 sp<ThreadBase> thread = mThread.promote(); 3060 if (thread != 0) { 3061 Mutex::Autolock _l(thread->mLock); 3062 if (mState != STOPPED && mState != PAUSED && mState != PAUSING) { 3063 return; 3064 } 3065 // No point remaining in PAUSED state after a flush => go to 3066 // STOPPED state 3067 mState = STOPPED; 3068 3069 // NOTE: reset() will reset cblk->user and cblk->server with 3070 // the risk that at the same time, the AudioMixer is trying to read 3071 // data. In this case, getNextBuffer() would return a NULL pointer 3072 // as audio buffer => the AudioMixer code MUST always test that pointer 3073 // returned by getNextBuffer() is not NULL! 3074 reset(); 3075 } 3076} 3077 3078void AudioFlinger::PlaybackThread::Track::reset() 3079{ 3080 AutoMutex _l(mCblk->lock); 3081 // Do not reset twice to avoid discarding data written just after a flush and before 3082 // the audioflinger thread detects the track is stopped. 3083 if (!mResetDone) { 3084 TrackBase::reset(); 3085 // Force underrun condition to avoid false underrun callback until first data is 3086 // written to buffer 3087 mCblk->flags |= CBLK_UNDERRUN_ON; 3088 mCblk->flags &= ~CBLK_FORCEREADY_MSK; 3089 mFillingUpStatus = FS_FILLING; 3090 mResetDone = true; 3091 } 3092} 3093 3094void AudioFlinger::PlaybackThread::Track::mute(bool muted) 3095{ 3096 mMute = muted; 3097} 3098 3099void AudioFlinger::PlaybackThread::Track::setVolume(float left, float right) 3100{ 3101 mVolume[0] = left; 3102 mVolume[1] = right; 3103} 3104 3105status_t AudioFlinger::PlaybackThread::Track::attachAuxEffect(int EffectId) 3106{ 3107 status_t status = DEAD_OBJECT; 3108 sp<ThreadBase> thread = mThread.promote(); 3109 if (thread != 0) { 3110 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3111 status = playbackThread->attachAuxEffect(this, EffectId); 3112 } 3113 return status; 3114} 3115 3116void AudioFlinger::PlaybackThread::Track::setAuxBuffer(int EffectId, int32_t *buffer) 3117{ 3118 mAuxEffectId = EffectId; 3119 mAuxBuffer = buffer; 3120} 3121 3122// ---------------------------------------------------------------------------- 3123 3124// RecordTrack constructor must be called with AudioFlinger::mLock held 3125AudioFlinger::RecordThread::RecordTrack::RecordTrack( 3126 const wp<ThreadBase>& thread, 3127 const sp<Client>& client, 3128 uint32_t sampleRate, 3129 int format, 3130 int channelCount, 3131 int frameCount, 3132 uint32_t flags, 3133 int sessionId) 3134 : TrackBase(thread, client, sampleRate, format, 3135 channelCount, frameCount, flags, 0, sessionId), 3136 mOverflow(false) 3137{ 3138 if (mCblk != NULL) { 3139 LOGV("RecordTrack constructor, size %d", (int)mBufferEnd - (int)mBuffer); 3140 if (format == AudioSystem::PCM_16_BIT) { 3141 mCblk->frameSize = channelCount * sizeof(int16_t); 3142 } else if (format == AudioSystem::PCM_8_BIT) { 3143 mCblk->frameSize = channelCount * sizeof(int8_t); 3144 } else { 3145 mCblk->frameSize = sizeof(int8_t); 3146 } 3147 } 3148} 3149 3150AudioFlinger::RecordThread::RecordTrack::~RecordTrack() 3151{ 3152 sp<ThreadBase> thread = mThread.promote(); 3153 if (thread != 0) { 3154 AudioSystem::releaseInput(thread->id()); 3155 } 3156} 3157 3158status_t AudioFlinger::RecordThread::RecordTrack::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3159{ 3160 audio_track_cblk_t* cblk = this->cblk(); 3161 uint32_t framesAvail; 3162 uint32_t framesReq = buffer->frameCount; 3163 3164 // Check if last stepServer failed, try to step now 3165 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3166 if (!step()) goto getNextBuffer_exit; 3167 LOGV("stepServer recovered"); 3168 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3169 } 3170 3171 framesAvail = cblk->framesAvailable_l(); 3172 3173 if (LIKELY(framesAvail)) { 3174 uint32_t s = cblk->server; 3175 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3176 3177 if (framesReq > framesAvail) { 3178 framesReq = framesAvail; 3179 } 3180 if (s + framesReq > bufferEnd) { 3181 framesReq = bufferEnd - s; 3182 } 3183 3184 buffer->raw = getBuffer(s, framesReq); 3185 if (buffer->raw == 0) goto getNextBuffer_exit; 3186 3187 buffer->frameCount = framesReq; 3188 return NO_ERROR; 3189 } 3190 3191getNextBuffer_exit: 3192 buffer->raw = 0; 3193 buffer->frameCount = 0; 3194 return NOT_ENOUGH_DATA; 3195} 3196 3197status_t AudioFlinger::RecordThread::RecordTrack::start() 3198{ 3199 sp<ThreadBase> thread = mThread.promote(); 3200 if (thread != 0) { 3201 RecordThread *recordThread = (RecordThread *)thread.get(); 3202 return recordThread->start(this); 3203 } else { 3204 return BAD_VALUE; 3205 } 3206} 3207 3208void AudioFlinger::RecordThread::RecordTrack::stop() 3209{ 3210 sp<ThreadBase> thread = mThread.promote(); 3211 if (thread != 0) { 3212 RecordThread *recordThread = (RecordThread *)thread.get(); 3213 recordThread->stop(this); 3214 { 3215 AutoMutex _l(mCblk->lock); 3216 TrackBase::reset(); 3217 // Force overerrun condition to avoid false overrun callback until first data is 3218 // read from buffer 3219 mCblk->flags |= CBLK_UNDERRUN_ON; 3220 } 3221 } 3222} 3223 3224void AudioFlinger::RecordThread::RecordTrack::dump(char* buffer, size_t size) 3225{ 3226 snprintf(buffer, size, " %05d %03u %03u %05d %04u %01d %05u %08x %08x\n", 3227 (mClient == NULL) ? getpid() : mClient->pid(), 3228 mFormat, 3229 mCblk->channelCount, 3230 mSessionId, 3231 mFrameCount, 3232 mState, 3233 mCblk->sampleRate, 3234 mCblk->server, 3235 mCblk->user); 3236} 3237 3238 3239// ---------------------------------------------------------------------------- 3240 3241AudioFlinger::PlaybackThread::OutputTrack::OutputTrack( 3242 const wp<ThreadBase>& thread, 3243 DuplicatingThread *sourceThread, 3244 uint32_t sampleRate, 3245 int format, 3246 int channelCount, 3247 int frameCount) 3248 : Track(thread, NULL, AudioSystem::NUM_STREAM_TYPES, sampleRate, format, channelCount, frameCount, NULL, 0), 3249 mActive(false), mSourceThread(sourceThread) 3250{ 3251 3252 PlaybackThread *playbackThread = (PlaybackThread *)thread.unsafe_get(); 3253 if (mCblk != NULL) { 3254 mCblk->flags |= CBLK_DIRECTION_OUT; 3255 mCblk->buffers = (char*)mCblk + sizeof(audio_track_cblk_t); 3256 mCblk->volume[0] = mCblk->volume[1] = 0x1000; 3257 mOutBuffer.frameCount = 0; 3258 playbackThread->mTracks.add(this); 3259 LOGV("OutputTrack constructor mCblk %p, mBuffer %p, mCblk->buffers %p, mCblk->frameCount %d, mCblk->sampleRate %d, mCblk->channelCount %d mBufferEnd %p", 3260 mCblk, mBuffer, mCblk->buffers, mCblk->frameCount, mCblk->sampleRate, mCblk->channelCount, mBufferEnd); 3261 } else { 3262 LOGW("Error creating output track on thread %p", playbackThread); 3263 } 3264} 3265 3266AudioFlinger::PlaybackThread::OutputTrack::~OutputTrack() 3267{ 3268 clearBufferQueue(); 3269} 3270 3271status_t AudioFlinger::PlaybackThread::OutputTrack::start() 3272{ 3273 status_t status = Track::start(); 3274 if (status != NO_ERROR) { 3275 return status; 3276 } 3277 3278 mActive = true; 3279 mRetryCount = 127; 3280 return status; 3281} 3282 3283void AudioFlinger::PlaybackThread::OutputTrack::stop() 3284{ 3285 Track::stop(); 3286 clearBufferQueue(); 3287 mOutBuffer.frameCount = 0; 3288 mActive = false; 3289} 3290 3291bool AudioFlinger::PlaybackThread::OutputTrack::write(int16_t* data, uint32_t frames) 3292{ 3293 Buffer *pInBuffer; 3294 Buffer inBuffer; 3295 uint32_t channelCount = mCblk->channelCount; 3296 bool outputBufferFull = false; 3297 inBuffer.frameCount = frames; 3298 inBuffer.i16 = data; 3299 3300 uint32_t waitTimeLeftMs = mSourceThread->waitTimeMs(); 3301 3302 if (!mActive && frames != 0) { 3303 start(); 3304 sp<ThreadBase> thread = mThread.promote(); 3305 if (thread != 0) { 3306 MixerThread *mixerThread = (MixerThread *)thread.get(); 3307 if (mCblk->frameCount > frames){ 3308 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3309 uint32_t startFrames = (mCblk->frameCount - frames); 3310 pInBuffer = new Buffer; 3311 pInBuffer->mBuffer = new int16_t[startFrames * channelCount]; 3312 pInBuffer->frameCount = startFrames; 3313 pInBuffer->i16 = pInBuffer->mBuffer; 3314 memset(pInBuffer->raw, 0, startFrames * channelCount * sizeof(int16_t)); 3315 mBufferQueue.add(pInBuffer); 3316 } else { 3317 LOGW ("OutputTrack::write() %p no more buffers in queue", this); 3318 } 3319 } 3320 } 3321 } 3322 3323 while (waitTimeLeftMs) { 3324 // First write pending buffers, then new data 3325 if (mBufferQueue.size()) { 3326 pInBuffer = mBufferQueue.itemAt(0); 3327 } else { 3328 pInBuffer = &inBuffer; 3329 } 3330 3331 if (pInBuffer->frameCount == 0) { 3332 break; 3333 } 3334 3335 if (mOutBuffer.frameCount == 0) { 3336 mOutBuffer.frameCount = pInBuffer->frameCount; 3337 nsecs_t startTime = systemTime(); 3338 if (obtainBuffer(&mOutBuffer, waitTimeLeftMs) == (status_t)AudioTrack::NO_MORE_BUFFERS) { 3339 LOGV ("OutputTrack::write() %p thread %p no more output buffers", this, mThread.unsafe_get()); 3340 outputBufferFull = true; 3341 break; 3342 } 3343 uint32_t waitTimeMs = (uint32_t)ns2ms(systemTime() - startTime); 3344 if (waitTimeLeftMs >= waitTimeMs) { 3345 waitTimeLeftMs -= waitTimeMs; 3346 } else { 3347 waitTimeLeftMs = 0; 3348 } 3349 } 3350 3351 uint32_t outFrames = pInBuffer->frameCount > mOutBuffer.frameCount ? mOutBuffer.frameCount : pInBuffer->frameCount; 3352 memcpy(mOutBuffer.raw, pInBuffer->raw, outFrames * channelCount * sizeof(int16_t)); 3353 mCblk->stepUser(outFrames); 3354 pInBuffer->frameCount -= outFrames; 3355 pInBuffer->i16 += outFrames * channelCount; 3356 mOutBuffer.frameCount -= outFrames; 3357 mOutBuffer.i16 += outFrames * channelCount; 3358 3359 if (pInBuffer->frameCount == 0) { 3360 if (mBufferQueue.size()) { 3361 mBufferQueue.removeAt(0); 3362 delete [] pInBuffer->mBuffer; 3363 delete pInBuffer; 3364 LOGV("OutputTrack::write() %p thread %p released overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3365 } else { 3366 break; 3367 } 3368 } 3369 } 3370 3371 // If we could not write all frames, allocate a buffer and queue it for next time. 3372 if (inBuffer.frameCount) { 3373 sp<ThreadBase> thread = mThread.promote(); 3374 if (thread != 0 && !thread->standby()) { 3375 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3376 pInBuffer = new Buffer; 3377 pInBuffer->mBuffer = new int16_t[inBuffer.frameCount * channelCount]; 3378 pInBuffer->frameCount = inBuffer.frameCount; 3379 pInBuffer->i16 = pInBuffer->mBuffer; 3380 memcpy(pInBuffer->raw, inBuffer.raw, inBuffer.frameCount * channelCount * sizeof(int16_t)); 3381 mBufferQueue.add(pInBuffer); 3382 LOGV("OutputTrack::write() %p thread %p adding overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3383 } else { 3384 LOGW("OutputTrack::write() %p thread %p no more overflow buffers", mThread.unsafe_get(), this); 3385 } 3386 } 3387 } 3388 3389 // Calling write() with a 0 length buffer, means that no more data will be written: 3390 // If no more buffers are pending, fill output track buffer to make sure it is started 3391 // by output mixer. 3392 if (frames == 0 && mBufferQueue.size() == 0) { 3393 if (mCblk->user < mCblk->frameCount) { 3394 frames = mCblk->frameCount - mCblk->user; 3395 pInBuffer = new Buffer; 3396 pInBuffer->mBuffer = new int16_t[frames * channelCount]; 3397 pInBuffer->frameCount = frames; 3398 pInBuffer->i16 = pInBuffer->mBuffer; 3399 memset(pInBuffer->raw, 0, frames * channelCount * sizeof(int16_t)); 3400 mBufferQueue.add(pInBuffer); 3401 } else if (mActive) { 3402 stop(); 3403 } 3404 } 3405 3406 return outputBufferFull; 3407} 3408 3409status_t AudioFlinger::PlaybackThread::OutputTrack::obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs) 3410{ 3411 int active; 3412 status_t result; 3413 audio_track_cblk_t* cblk = mCblk; 3414 uint32_t framesReq = buffer->frameCount; 3415 3416// LOGV("OutputTrack::obtainBuffer user %d, server %d", cblk->user, cblk->server); 3417 buffer->frameCount = 0; 3418 3419 uint32_t framesAvail = cblk->framesAvailable(); 3420 3421 3422 if (framesAvail == 0) { 3423 Mutex::Autolock _l(cblk->lock); 3424 goto start_loop_here; 3425 while (framesAvail == 0) { 3426 active = mActive; 3427 if (UNLIKELY(!active)) { 3428 LOGV("Not active and NO_MORE_BUFFERS"); 3429 return AudioTrack::NO_MORE_BUFFERS; 3430 } 3431 result = cblk->cv.waitRelative(cblk->lock, milliseconds(waitTimeMs)); 3432 if (result != NO_ERROR) { 3433 return AudioTrack::NO_MORE_BUFFERS; 3434 } 3435 // read the server count again 3436 start_loop_here: 3437 framesAvail = cblk->framesAvailable_l(); 3438 } 3439 } 3440 3441// if (framesAvail < framesReq) { 3442// return AudioTrack::NO_MORE_BUFFERS; 3443// } 3444 3445 if (framesReq > framesAvail) { 3446 framesReq = framesAvail; 3447 } 3448 3449 uint32_t u = cblk->user; 3450 uint32_t bufferEnd = cblk->userBase + cblk->frameCount; 3451 3452 if (u + framesReq > bufferEnd) { 3453 framesReq = bufferEnd - u; 3454 } 3455 3456 buffer->frameCount = framesReq; 3457 buffer->raw = (void *)cblk->buffer(u); 3458 return NO_ERROR; 3459} 3460 3461 3462void AudioFlinger::PlaybackThread::OutputTrack::clearBufferQueue() 3463{ 3464 size_t size = mBufferQueue.size(); 3465 Buffer *pBuffer; 3466 3467 for (size_t i = 0; i < size; i++) { 3468 pBuffer = mBufferQueue.itemAt(i); 3469 delete [] pBuffer->mBuffer; 3470 delete pBuffer; 3471 } 3472 mBufferQueue.clear(); 3473} 3474 3475// ---------------------------------------------------------------------------- 3476 3477AudioFlinger::Client::Client(const sp<AudioFlinger>& audioFlinger, pid_t pid) 3478 : RefBase(), 3479 mAudioFlinger(audioFlinger), 3480 mMemoryDealer(new MemoryDealer(1024*1024, "AudioFlinger::Client")), 3481 mPid(pid) 3482{ 3483 // 1 MB of address space is good for 32 tracks, 8 buffers each, 4 KB/buffer 3484} 3485 3486// Client destructor must be called with AudioFlinger::mLock held 3487AudioFlinger::Client::~Client() 3488{ 3489 mAudioFlinger->removeClient_l(mPid); 3490} 3491 3492const sp<MemoryDealer>& AudioFlinger::Client::heap() const 3493{ 3494 return mMemoryDealer; 3495} 3496 3497// ---------------------------------------------------------------------------- 3498 3499AudioFlinger::NotificationClient::NotificationClient(const sp<AudioFlinger>& audioFlinger, 3500 const sp<IAudioFlingerClient>& client, 3501 pid_t pid) 3502 : mAudioFlinger(audioFlinger), mPid(pid), mClient(client) 3503{ 3504} 3505 3506AudioFlinger::NotificationClient::~NotificationClient() 3507{ 3508 mClient.clear(); 3509} 3510 3511void AudioFlinger::NotificationClient::binderDied(const wp<IBinder>& who) 3512{ 3513 sp<NotificationClient> keep(this); 3514 { 3515 mAudioFlinger->removeNotificationClient(mPid); 3516 } 3517} 3518 3519// ---------------------------------------------------------------------------- 3520 3521AudioFlinger::TrackHandle::TrackHandle(const sp<AudioFlinger::PlaybackThread::Track>& track) 3522 : BnAudioTrack(), 3523 mTrack(track) 3524{ 3525} 3526 3527AudioFlinger::TrackHandle::~TrackHandle() { 3528 // just stop the track on deletion, associated resources 3529 // will be freed from the main thread once all pending buffers have 3530 // been played. Unless it's not in the active track list, in which 3531 // case we free everything now... 3532 mTrack->destroy(); 3533} 3534 3535status_t AudioFlinger::TrackHandle::start() { 3536 return mTrack->start(); 3537} 3538 3539void AudioFlinger::TrackHandle::stop() { 3540 mTrack->stop(); 3541} 3542 3543void AudioFlinger::TrackHandle::flush() { 3544 mTrack->flush(); 3545} 3546 3547void AudioFlinger::TrackHandle::mute(bool e) { 3548 mTrack->mute(e); 3549} 3550 3551void AudioFlinger::TrackHandle::pause() { 3552 mTrack->pause(); 3553} 3554 3555void AudioFlinger::TrackHandle::setVolume(float left, float right) { 3556 mTrack->setVolume(left, right); 3557} 3558 3559sp<IMemory> AudioFlinger::TrackHandle::getCblk() const { 3560 return mTrack->getCblk(); 3561} 3562 3563status_t AudioFlinger::TrackHandle::attachAuxEffect(int EffectId) 3564{ 3565 return mTrack->attachAuxEffect(EffectId); 3566} 3567 3568status_t AudioFlinger::TrackHandle::onTransact( 3569 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 3570{ 3571 return BnAudioTrack::onTransact(code, data, reply, flags); 3572} 3573 3574// ---------------------------------------------------------------------------- 3575 3576sp<IAudioRecord> AudioFlinger::openRecord( 3577 pid_t pid, 3578 int input, 3579 uint32_t sampleRate, 3580 int format, 3581 int channelCount, 3582 int frameCount, 3583 uint32_t flags, 3584 int *sessionId, 3585 status_t *status) 3586{ 3587 sp<RecordThread::RecordTrack> recordTrack; 3588 sp<RecordHandle> recordHandle; 3589 sp<Client> client; 3590 wp<Client> wclient; 3591 status_t lStatus; 3592 RecordThread *thread; 3593 size_t inFrameCount; 3594 int lSessionId; 3595 3596 // check calling permissions 3597 if (!recordingAllowed()) { 3598 lStatus = PERMISSION_DENIED; 3599 goto Exit; 3600 } 3601 3602 // add client to list 3603 { // scope for mLock 3604 Mutex::Autolock _l(mLock); 3605 thread = checkRecordThread_l(input); 3606 if (thread == NULL) { 3607 lStatus = BAD_VALUE; 3608 goto Exit; 3609 } 3610 3611 wclient = mClients.valueFor(pid); 3612 if (wclient != NULL) { 3613 client = wclient.promote(); 3614 } else { 3615 client = new Client(this, pid); 3616 mClients.add(pid, client); 3617 } 3618 3619 // If no audio session id is provided, create one here 3620 if (sessionId != NULL && *sessionId != AudioSystem::SESSION_OUTPUT_MIX) { 3621 lSessionId = *sessionId; 3622 } else { 3623 lSessionId = nextUniqueId_l(); 3624 if (sessionId != NULL) { 3625 *sessionId = lSessionId; 3626 } 3627 } 3628 // create new record track. The record track uses one track in mHardwareMixerThread by convention. 3629 recordTrack = new RecordThread::RecordTrack(thread, client, sampleRate, 3630 format, channelCount, frameCount, flags, lSessionId); 3631 } 3632 if (recordTrack->getCblk() == NULL) { 3633 // remove local strong reference to Client before deleting the RecordTrack so that the Client 3634 // destructor is called by the TrackBase destructor with mLock held 3635 client.clear(); 3636 recordTrack.clear(); 3637 lStatus = NO_MEMORY; 3638 goto Exit; 3639 } 3640 3641 // return to handle to client 3642 recordHandle = new RecordHandle(recordTrack); 3643 lStatus = NO_ERROR; 3644 3645Exit: 3646 if (status) { 3647 *status = lStatus; 3648 } 3649 return recordHandle; 3650} 3651 3652// ---------------------------------------------------------------------------- 3653 3654AudioFlinger::RecordHandle::RecordHandle(const sp<AudioFlinger::RecordThread::RecordTrack>& recordTrack) 3655 : BnAudioRecord(), 3656 mRecordTrack(recordTrack) 3657{ 3658} 3659 3660AudioFlinger::RecordHandle::~RecordHandle() { 3661 stop(); 3662} 3663 3664status_t AudioFlinger::RecordHandle::start() { 3665 LOGV("RecordHandle::start()"); 3666 return mRecordTrack->start(); 3667} 3668 3669void AudioFlinger::RecordHandle::stop() { 3670 LOGV("RecordHandle::stop()"); 3671 mRecordTrack->stop(); 3672} 3673 3674sp<IMemory> AudioFlinger::RecordHandle::getCblk() const { 3675 return mRecordTrack->getCblk(); 3676} 3677 3678status_t AudioFlinger::RecordHandle::onTransact( 3679 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 3680{ 3681 return BnAudioRecord::onTransact(code, data, reply, flags); 3682} 3683 3684// ---------------------------------------------------------------------------- 3685 3686AudioFlinger::RecordThread::RecordThread(const sp<AudioFlinger>& audioFlinger, AudioStreamIn *input, uint32_t sampleRate, uint32_t channels, int id) : 3687 ThreadBase(audioFlinger, id), 3688 mInput(input), mResampler(0), mRsmpOutBuffer(0), mRsmpInBuffer(0) 3689{ 3690 mReqChannelCount = AudioSystem::popCount(channels); 3691 mReqSampleRate = sampleRate; 3692 readInputParameters(); 3693} 3694 3695 3696AudioFlinger::RecordThread::~RecordThread() 3697{ 3698 delete[] mRsmpInBuffer; 3699 if (mResampler != 0) { 3700 delete mResampler; 3701 delete[] mRsmpOutBuffer; 3702 } 3703} 3704 3705void AudioFlinger::RecordThread::onFirstRef() 3706{ 3707 const size_t SIZE = 256; 3708 char buffer[SIZE]; 3709 3710 snprintf(buffer, SIZE, "Record Thread %p", this); 3711 3712 run(buffer, PRIORITY_URGENT_AUDIO); 3713} 3714 3715bool AudioFlinger::RecordThread::threadLoop() 3716{ 3717 AudioBufferProvider::Buffer buffer; 3718 sp<RecordTrack> activeTrack; 3719 3720 nsecs_t lastWarning = 0; 3721 3722 // start recording 3723 while (!exitPending()) { 3724 3725 processConfigEvents(); 3726 3727 { // scope for mLock 3728 Mutex::Autolock _l(mLock); 3729 checkForNewParameters_l(); 3730 if (mActiveTrack == 0 && mConfigEvents.isEmpty()) { 3731 if (!mStandby) { 3732 mInput->standby(); 3733 mStandby = true; 3734 } 3735 3736 if (exitPending()) break; 3737 3738 LOGV("RecordThread: loop stopping"); 3739 // go to sleep 3740 mWaitWorkCV.wait(mLock); 3741 LOGV("RecordThread: loop starting"); 3742 continue; 3743 } 3744 if (mActiveTrack != 0) { 3745 if (mActiveTrack->mState == TrackBase::PAUSING) { 3746 if (!mStandby) { 3747 mInput->standby(); 3748 mStandby = true; 3749 } 3750 mActiveTrack.clear(); 3751 mStartStopCond.broadcast(); 3752 } else if (mActiveTrack->mState == TrackBase::RESUMING) { 3753 if (mReqChannelCount != mActiveTrack->channelCount()) { 3754 mActiveTrack.clear(); 3755 mStartStopCond.broadcast(); 3756 } else if (mBytesRead != 0) { 3757 // record start succeeds only if first read from audio input 3758 // succeeds 3759 if (mBytesRead > 0) { 3760 mActiveTrack->mState = TrackBase::ACTIVE; 3761 } else { 3762 mActiveTrack.clear(); 3763 } 3764 mStartStopCond.broadcast(); 3765 } 3766 mStandby = false; 3767 } 3768 } 3769 } 3770 3771 if (mActiveTrack != 0) { 3772 if (mActiveTrack->mState != TrackBase::ACTIVE && 3773 mActiveTrack->mState != TrackBase::RESUMING) { 3774 usleep(5000); 3775 continue; 3776 } 3777 buffer.frameCount = mFrameCount; 3778 if (LIKELY(mActiveTrack->getNextBuffer(&buffer) == NO_ERROR)) { 3779 size_t framesOut = buffer.frameCount; 3780 if (mResampler == 0) { 3781 // no resampling 3782 while (framesOut) { 3783 size_t framesIn = mFrameCount - mRsmpInIndex; 3784 if (framesIn) { 3785 int8_t *src = (int8_t *)mRsmpInBuffer + mRsmpInIndex * mFrameSize; 3786 int8_t *dst = buffer.i8 + (buffer.frameCount - framesOut) * mActiveTrack->mCblk->frameSize; 3787 if (framesIn > framesOut) 3788 framesIn = framesOut; 3789 mRsmpInIndex += framesIn; 3790 framesOut -= framesIn; 3791 if ((int)mChannelCount == mReqChannelCount || 3792 mFormat != AudioSystem::PCM_16_BIT) { 3793 memcpy(dst, src, framesIn * mFrameSize); 3794 } else { 3795 int16_t *src16 = (int16_t *)src; 3796 int16_t *dst16 = (int16_t *)dst; 3797 if (mChannelCount == 1) { 3798 while (framesIn--) { 3799 *dst16++ = *src16; 3800 *dst16++ = *src16++; 3801 } 3802 } else { 3803 while (framesIn--) { 3804 *dst16++ = (int16_t)(((int32_t)*src16 + (int32_t)*(src16 + 1)) >> 1); 3805 src16 += 2; 3806 } 3807 } 3808 } 3809 } 3810 if (framesOut && mFrameCount == mRsmpInIndex) { 3811 if (framesOut == mFrameCount && 3812 ((int)mChannelCount == mReqChannelCount || mFormat != AudioSystem::PCM_16_BIT)) { 3813 mBytesRead = mInput->read(buffer.raw, mInputBytes); 3814 framesOut = 0; 3815 } else { 3816 mBytesRead = mInput->read(mRsmpInBuffer, mInputBytes); 3817 mRsmpInIndex = 0; 3818 } 3819 if (mBytesRead < 0) { 3820 LOGE("Error reading audio input"); 3821 if (mActiveTrack->mState == TrackBase::ACTIVE) { 3822 // Force input into standby so that it tries to 3823 // recover at next read attempt 3824 mInput->standby(); 3825 usleep(5000); 3826 } 3827 mRsmpInIndex = mFrameCount; 3828 framesOut = 0; 3829 buffer.frameCount = 0; 3830 } 3831 } 3832 } 3833 } else { 3834 // resampling 3835 3836 memset(mRsmpOutBuffer, 0, framesOut * 2 * sizeof(int32_t)); 3837 // alter output frame count as if we were expecting stereo samples 3838 if (mChannelCount == 1 && mReqChannelCount == 1) { 3839 framesOut >>= 1; 3840 } 3841 mResampler->resample(mRsmpOutBuffer, framesOut, this); 3842 // ditherAndClamp() works as long as all buffers returned by mActiveTrack->getNextBuffer() 3843 // are 32 bit aligned which should be always true. 3844 if (mChannelCount == 2 && mReqChannelCount == 1) { 3845 AudioMixer::ditherAndClamp(mRsmpOutBuffer, mRsmpOutBuffer, framesOut); 3846 // the resampler always outputs stereo samples: do post stereo to mono conversion 3847 int16_t *src = (int16_t *)mRsmpOutBuffer; 3848 int16_t *dst = buffer.i16; 3849 while (framesOut--) { 3850 *dst++ = (int16_t)(((int32_t)*src + (int32_t)*(src + 1)) >> 1); 3851 src += 2; 3852 } 3853 } else { 3854 AudioMixer::ditherAndClamp((int32_t *)buffer.raw, mRsmpOutBuffer, framesOut); 3855 } 3856 3857 } 3858 mActiveTrack->releaseBuffer(&buffer); 3859 mActiveTrack->overflow(); 3860 } 3861 // client isn't retrieving buffers fast enough 3862 else { 3863 if (!mActiveTrack->setOverflow()) { 3864 nsecs_t now = systemTime(); 3865 if ((now - lastWarning) > kWarningThrottle) { 3866 LOGW("RecordThread: buffer overflow"); 3867 lastWarning = now; 3868 } 3869 } 3870 // Release the processor for a while before asking for a new buffer. 3871 // This will give the application more chance to read from the buffer and 3872 // clear the overflow. 3873 usleep(5000); 3874 } 3875 } 3876 } 3877 3878 if (!mStandby) { 3879 mInput->standby(); 3880 } 3881 mActiveTrack.clear(); 3882 3883 mStartStopCond.broadcast(); 3884 3885 LOGV("RecordThread %p exiting", this); 3886 return false; 3887} 3888 3889status_t AudioFlinger::RecordThread::start(RecordThread::RecordTrack* recordTrack) 3890{ 3891 LOGV("RecordThread::start"); 3892 sp <ThreadBase> strongMe = this; 3893 status_t status = NO_ERROR; 3894 { 3895 AutoMutex lock(&mLock); 3896 if (mActiveTrack != 0) { 3897 if (recordTrack != mActiveTrack.get()) { 3898 status = -EBUSY; 3899 } else if (mActiveTrack->mState == TrackBase::PAUSING) { 3900 mActiveTrack->mState = TrackBase::ACTIVE; 3901 } 3902 return status; 3903 } 3904 3905 recordTrack->mState = TrackBase::IDLE; 3906 mActiveTrack = recordTrack; 3907 mLock.unlock(); 3908 status_t status = AudioSystem::startInput(mId); 3909 mLock.lock(); 3910 if (status != NO_ERROR) { 3911 mActiveTrack.clear(); 3912 return status; 3913 } 3914 mRsmpInIndex = mFrameCount; 3915 mBytesRead = 0; 3916 if (mResampler != NULL) { 3917 mResampler->reset(); 3918 } 3919 mActiveTrack->mState = TrackBase::RESUMING; 3920 // signal thread to start 3921 LOGV("Signal record thread"); 3922 mWaitWorkCV.signal(); 3923 // do not wait for mStartStopCond if exiting 3924 if (mExiting) { 3925 mActiveTrack.clear(); 3926 status = INVALID_OPERATION; 3927 goto startError; 3928 } 3929 mStartStopCond.wait(mLock); 3930 if (mActiveTrack == 0) { 3931 LOGV("Record failed to start"); 3932 status = BAD_VALUE; 3933 goto startError; 3934 } 3935 LOGV("Record started OK"); 3936 return status; 3937 } 3938startError: 3939 AudioSystem::stopInput(mId); 3940 return status; 3941} 3942 3943void AudioFlinger::RecordThread::stop(RecordThread::RecordTrack* recordTrack) { 3944 LOGV("RecordThread::stop"); 3945 sp <ThreadBase> strongMe = this; 3946 { 3947 AutoMutex lock(&mLock); 3948 if (mActiveTrack != 0 && recordTrack == mActiveTrack.get()) { 3949 mActiveTrack->mState = TrackBase::PAUSING; 3950 // do not wait for mStartStopCond if exiting 3951 if (mExiting) { 3952 return; 3953 } 3954 mStartStopCond.wait(mLock); 3955 // if we have been restarted, recordTrack == mActiveTrack.get() here 3956 if (mActiveTrack == 0 || recordTrack != mActiveTrack.get()) { 3957 mLock.unlock(); 3958 AudioSystem::stopInput(mId); 3959 mLock.lock(); 3960 LOGV("Record stopped OK"); 3961 } 3962 } 3963 } 3964} 3965 3966status_t AudioFlinger::RecordThread::dump(int fd, const Vector<String16>& args) 3967{ 3968 const size_t SIZE = 256; 3969 char buffer[SIZE]; 3970 String8 result; 3971 pid_t pid = 0; 3972 3973 snprintf(buffer, SIZE, "\nInput thread %p internals\n", this); 3974 result.append(buffer); 3975 3976 if (mActiveTrack != 0) { 3977 result.append("Active Track:\n"); 3978 result.append(" Clien Fmt Chn Session Buf S SRate Serv User\n"); 3979 mActiveTrack->dump(buffer, SIZE); 3980 result.append(buffer); 3981 3982 snprintf(buffer, SIZE, "In index: %d\n", mRsmpInIndex); 3983 result.append(buffer); 3984 snprintf(buffer, SIZE, "In size: %d\n", mInputBytes); 3985 result.append(buffer); 3986 snprintf(buffer, SIZE, "Resampling: %d\n", (mResampler != 0)); 3987 result.append(buffer); 3988 snprintf(buffer, SIZE, "Out channel count: %d\n", mReqChannelCount); 3989 result.append(buffer); 3990 snprintf(buffer, SIZE, "Out sample rate: %d\n", mReqSampleRate); 3991 result.append(buffer); 3992 3993 3994 } else { 3995 result.append("No record client\n"); 3996 } 3997 write(fd, result.string(), result.size()); 3998 3999 dumpBase(fd, args); 4000 4001 return NO_ERROR; 4002} 4003 4004status_t AudioFlinger::RecordThread::getNextBuffer(AudioBufferProvider::Buffer* buffer) 4005{ 4006 size_t framesReq = buffer->frameCount; 4007 size_t framesReady = mFrameCount - mRsmpInIndex; 4008 int channelCount; 4009 4010 if (framesReady == 0) { 4011 mBytesRead = mInput->read(mRsmpInBuffer, mInputBytes); 4012 if (mBytesRead < 0) { 4013 LOGE("RecordThread::getNextBuffer() Error reading audio input"); 4014 if (mActiveTrack->mState == TrackBase::ACTIVE) { 4015 // Force input into standby so that it tries to 4016 // recover at next read attempt 4017 mInput->standby(); 4018 usleep(5000); 4019 } 4020 buffer->raw = 0; 4021 buffer->frameCount = 0; 4022 return NOT_ENOUGH_DATA; 4023 } 4024 mRsmpInIndex = 0; 4025 framesReady = mFrameCount; 4026 } 4027 4028 if (framesReq > framesReady) { 4029 framesReq = framesReady; 4030 } 4031 4032 if (mChannelCount == 1 && mReqChannelCount == 2) { 4033 channelCount = 1; 4034 } else { 4035 channelCount = 2; 4036 } 4037 buffer->raw = mRsmpInBuffer + mRsmpInIndex * channelCount; 4038 buffer->frameCount = framesReq; 4039 return NO_ERROR; 4040} 4041 4042void AudioFlinger::RecordThread::releaseBuffer(AudioBufferProvider::Buffer* buffer) 4043{ 4044 mRsmpInIndex += buffer->frameCount; 4045 buffer->frameCount = 0; 4046} 4047 4048bool AudioFlinger::RecordThread::checkForNewParameters_l() 4049{ 4050 bool reconfig = false; 4051 4052 while (!mNewParameters.isEmpty()) { 4053 status_t status = NO_ERROR; 4054 String8 keyValuePair = mNewParameters[0]; 4055 AudioParameter param = AudioParameter(keyValuePair); 4056 int value; 4057 int reqFormat = mFormat; 4058 int reqSamplingRate = mReqSampleRate; 4059 int reqChannelCount = mReqChannelCount; 4060 4061 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 4062 reqSamplingRate = value; 4063 reconfig = true; 4064 } 4065 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 4066 reqFormat = value; 4067 reconfig = true; 4068 } 4069 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 4070 reqChannelCount = AudioSystem::popCount(value); 4071 reconfig = true; 4072 } 4073 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 4074 // do not accept frame count changes if tracks are open as the track buffer 4075 // size depends on frame count and correct behavior would not be garantied 4076 // if frame count is changed after track creation 4077 if (mActiveTrack != 0) { 4078 status = INVALID_OPERATION; 4079 } else { 4080 reconfig = true; 4081 } 4082 } 4083 if (status == NO_ERROR) { 4084 status = mInput->setParameters(keyValuePair); 4085 if (status == INVALID_OPERATION) { 4086 mInput->standby(); 4087 status = mInput->setParameters(keyValuePair); 4088 } 4089 if (reconfig) { 4090 if (status == BAD_VALUE && 4091 reqFormat == mInput->format() && reqFormat == AudioSystem::PCM_16_BIT && 4092 ((int)mInput->sampleRate() <= 2 * reqSamplingRate) && 4093 (AudioSystem::popCount(mInput->channels()) < 3) && (reqChannelCount < 3)) { 4094 status = NO_ERROR; 4095 } 4096 if (status == NO_ERROR) { 4097 readInputParameters(); 4098 sendConfigEvent_l(AudioSystem::INPUT_CONFIG_CHANGED); 4099 } 4100 } 4101 } 4102 4103 mNewParameters.removeAt(0); 4104 4105 mParamStatus = status; 4106 mParamCond.signal(); 4107 mWaitWorkCV.wait(mLock); 4108 } 4109 return reconfig; 4110} 4111 4112String8 AudioFlinger::RecordThread::getParameters(const String8& keys) 4113{ 4114 return mInput->getParameters(keys); 4115} 4116 4117void AudioFlinger::RecordThread::audioConfigChanged_l(int event, int param) { 4118 AudioSystem::OutputDescriptor desc; 4119 void *param2 = 0; 4120 4121 switch (event) { 4122 case AudioSystem::INPUT_OPENED: 4123 case AudioSystem::INPUT_CONFIG_CHANGED: 4124 desc.channels = mChannels; 4125 desc.samplingRate = mSampleRate; 4126 desc.format = mFormat; 4127 desc.frameCount = mFrameCount; 4128 desc.latency = 0; 4129 param2 = &desc; 4130 break; 4131 4132 case AudioSystem::INPUT_CLOSED: 4133 default: 4134 break; 4135 } 4136 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 4137} 4138 4139void AudioFlinger::RecordThread::readInputParameters() 4140{ 4141 if (mRsmpInBuffer) delete mRsmpInBuffer; 4142 if (mRsmpOutBuffer) delete mRsmpOutBuffer; 4143 if (mResampler) delete mResampler; 4144 mResampler = 0; 4145 4146 mSampleRate = mInput->sampleRate(); 4147 mChannels = mInput->channels(); 4148 mChannelCount = (uint16_t)AudioSystem::popCount(mChannels); 4149 mFormat = mInput->format(); 4150 mFrameSize = (uint16_t)mInput->frameSize(); 4151 mInputBytes = mInput->bufferSize(); 4152 mFrameCount = mInputBytes / mFrameSize; 4153 mRsmpInBuffer = new int16_t[mFrameCount * mChannelCount]; 4154 4155 if (mSampleRate != mReqSampleRate && mChannelCount < 3 && mReqChannelCount < 3) 4156 { 4157 int channelCount; 4158 // optmization: if mono to mono, use the resampler in stereo to stereo mode to avoid 4159 // stereo to mono post process as the resampler always outputs stereo. 4160 if (mChannelCount == 1 && mReqChannelCount == 2) { 4161 channelCount = 1; 4162 } else { 4163 channelCount = 2; 4164 } 4165 mResampler = AudioResampler::create(16, channelCount, mReqSampleRate); 4166 mResampler->setSampleRate(mSampleRate); 4167 mResampler->setVolume(AudioMixer::UNITY_GAIN, AudioMixer::UNITY_GAIN); 4168 mRsmpOutBuffer = new int32_t[mFrameCount * 2]; 4169 4170 // optmization: if mono to mono, alter input frame count as if we were inputing stereo samples 4171 if (mChannelCount == 1 && mReqChannelCount == 1) { 4172 mFrameCount >>= 1; 4173 } 4174 4175 } 4176 mRsmpInIndex = mFrameCount; 4177} 4178 4179unsigned int AudioFlinger::RecordThread::getInputFramesLost() 4180{ 4181 return mInput->getInputFramesLost(); 4182} 4183 4184// ---------------------------------------------------------------------------- 4185 4186int AudioFlinger::openOutput(uint32_t *pDevices, 4187 uint32_t *pSamplingRate, 4188 uint32_t *pFormat, 4189 uint32_t *pChannels, 4190 uint32_t *pLatencyMs, 4191 uint32_t flags) 4192{ 4193 status_t status; 4194 PlaybackThread *thread = NULL; 4195 mHardwareStatus = AUDIO_HW_OUTPUT_OPEN; 4196 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4197 uint32_t format = pFormat ? *pFormat : 0; 4198 uint32_t channels = pChannels ? *pChannels : 0; 4199 uint32_t latency = pLatencyMs ? *pLatencyMs : 0; 4200 4201 LOGV("openOutput(), Device %x, SamplingRate %d, Format %d, Channels %x, flags %x", 4202 pDevices ? *pDevices : 0, 4203 samplingRate, 4204 format, 4205 channels, 4206 flags); 4207 4208 if (pDevices == NULL || *pDevices == 0) { 4209 return 0; 4210 } 4211 Mutex::Autolock _l(mLock); 4212 4213 AudioStreamOut *output = mAudioHardware->openOutputStream(*pDevices, 4214 (int *)&format, 4215 &channels, 4216 &samplingRate, 4217 &status); 4218 LOGV("openOutput() openOutputStream returned output %p, SamplingRate %d, Format %d, Channels %x, status %d", 4219 output, 4220 samplingRate, 4221 format, 4222 channels, 4223 status); 4224 4225 mHardwareStatus = AUDIO_HW_IDLE; 4226 if (output != 0) { 4227 int id = nextUniqueId_l(); 4228 if ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) || 4229 (format != AudioSystem::PCM_16_BIT) || 4230 (channels != AudioSystem::CHANNEL_OUT_STEREO)) { 4231 thread = new DirectOutputThread(this, output, id, *pDevices); 4232 LOGV("openOutput() created direct output: ID %d thread %p", id, thread); 4233 } else { 4234 thread = new MixerThread(this, output, id, *pDevices); 4235 LOGV("openOutput() created mixer output: ID %d thread %p", id, thread); 4236 } 4237 mPlaybackThreads.add(id, thread); 4238 4239 if (pSamplingRate) *pSamplingRate = samplingRate; 4240 if (pFormat) *pFormat = format; 4241 if (pChannels) *pChannels = channels; 4242 if (pLatencyMs) *pLatencyMs = thread->latency(); 4243 4244 // notify client processes of the new output creation 4245 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4246 return id; 4247 } 4248 4249 return 0; 4250} 4251 4252int AudioFlinger::openDuplicateOutput(int output1, int output2) 4253{ 4254 Mutex::Autolock _l(mLock); 4255 MixerThread *thread1 = checkMixerThread_l(output1); 4256 MixerThread *thread2 = checkMixerThread_l(output2); 4257 4258 if (thread1 == NULL || thread2 == NULL) { 4259 LOGW("openDuplicateOutput() wrong output mixer type for output %d or %d", output1, output2); 4260 return 0; 4261 } 4262 4263 int id = nextUniqueId_l(); 4264 DuplicatingThread *thread = new DuplicatingThread(this, thread1, id); 4265 thread->addOutputTrack(thread2); 4266 mPlaybackThreads.add(id, thread); 4267 // notify client processes of the new output creation 4268 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4269 return id; 4270} 4271 4272status_t AudioFlinger::closeOutput(int output) 4273{ 4274 // keep strong reference on the playback thread so that 4275 // it is not destroyed while exit() is executed 4276 sp <PlaybackThread> thread; 4277 { 4278 Mutex::Autolock _l(mLock); 4279 thread = checkPlaybackThread_l(output); 4280 if (thread == NULL) { 4281 return BAD_VALUE; 4282 } 4283 4284 LOGV("closeOutput() %d", output); 4285 4286 if (thread->type() == PlaybackThread::MIXER) { 4287 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4288 if (mPlaybackThreads.valueAt(i)->type() == PlaybackThread::DUPLICATING) { 4289 DuplicatingThread *dupThread = (DuplicatingThread *)mPlaybackThreads.valueAt(i).get(); 4290 dupThread->removeOutputTrack((MixerThread *)thread.get()); 4291 } 4292 } 4293 } 4294 void *param2 = 0; 4295 audioConfigChanged_l(AudioSystem::OUTPUT_CLOSED, output, param2); 4296 mPlaybackThreads.removeItem(output); 4297 } 4298 thread->exit(); 4299 4300 if (thread->type() != PlaybackThread::DUPLICATING) { 4301 mAudioHardware->closeOutputStream(thread->getOutput()); 4302 } 4303 return NO_ERROR; 4304} 4305 4306status_t AudioFlinger::suspendOutput(int output) 4307{ 4308 Mutex::Autolock _l(mLock); 4309 PlaybackThread *thread = checkPlaybackThread_l(output); 4310 4311 if (thread == NULL) { 4312 return BAD_VALUE; 4313 } 4314 4315 LOGV("suspendOutput() %d", output); 4316 thread->suspend(); 4317 4318 return NO_ERROR; 4319} 4320 4321status_t AudioFlinger::restoreOutput(int output) 4322{ 4323 Mutex::Autolock _l(mLock); 4324 PlaybackThread *thread = checkPlaybackThread_l(output); 4325 4326 if (thread == NULL) { 4327 return BAD_VALUE; 4328 } 4329 4330 LOGV("restoreOutput() %d", output); 4331 4332 thread->restore(); 4333 4334 return NO_ERROR; 4335} 4336 4337int AudioFlinger::openInput(uint32_t *pDevices, 4338 uint32_t *pSamplingRate, 4339 uint32_t *pFormat, 4340 uint32_t *pChannels, 4341 uint32_t acoustics) 4342{ 4343 status_t status; 4344 RecordThread *thread = NULL; 4345 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4346 uint32_t format = pFormat ? *pFormat : 0; 4347 uint32_t channels = pChannels ? *pChannels : 0; 4348 uint32_t reqSamplingRate = samplingRate; 4349 uint32_t reqFormat = format; 4350 uint32_t reqChannels = channels; 4351 4352 if (pDevices == NULL || *pDevices == 0) { 4353 return 0; 4354 } 4355 Mutex::Autolock _l(mLock); 4356 4357 AudioStreamIn *input = mAudioHardware->openInputStream(*pDevices, 4358 (int *)&format, 4359 &channels, 4360 &samplingRate, 4361 &status, 4362 (AudioSystem::audio_in_acoustics)acoustics); 4363 LOGV("openInput() openInputStream returned input %p, SamplingRate %d, Format %d, Channels %x, acoustics %x, status %d", 4364 input, 4365 samplingRate, 4366 format, 4367 channels, 4368 acoustics, 4369 status); 4370 4371 // If the input could not be opened with the requested parameters and we can handle the conversion internally, 4372 // try to open again with the proposed parameters. The AudioFlinger can resample the input and do mono to stereo 4373 // or stereo to mono conversions on 16 bit PCM inputs. 4374 if (input == 0 && status == BAD_VALUE && 4375 reqFormat == format && format == AudioSystem::PCM_16_BIT && 4376 (samplingRate <= 2 * reqSamplingRate) && 4377 (AudioSystem::popCount(channels) < 3) && (AudioSystem::popCount(reqChannels) < 3)) { 4378 LOGV("openInput() reopening with proposed sampling rate and channels"); 4379 input = mAudioHardware->openInputStream(*pDevices, 4380 (int *)&format, 4381 &channels, 4382 &samplingRate, 4383 &status, 4384 (AudioSystem::audio_in_acoustics)acoustics); 4385 } 4386 4387 if (input != 0) { 4388 int id = nextUniqueId_l(); 4389 // Start record thread 4390 thread = new RecordThread(this, input, reqSamplingRate, reqChannels, id); 4391 mRecordThreads.add(id, thread); 4392 LOGV("openInput() created record thread: ID %d thread %p", id, thread); 4393 if (pSamplingRate) *pSamplingRate = reqSamplingRate; 4394 if (pFormat) *pFormat = format; 4395 if (pChannels) *pChannels = reqChannels; 4396 4397 input->standby(); 4398 4399 // notify client processes of the new input creation 4400 thread->audioConfigChanged_l(AudioSystem::INPUT_OPENED); 4401 return id; 4402 } 4403 4404 return 0; 4405} 4406 4407status_t AudioFlinger::closeInput(int input) 4408{ 4409 // keep strong reference on the record thread so that 4410 // it is not destroyed while exit() is executed 4411 sp <RecordThread> thread; 4412 { 4413 Mutex::Autolock _l(mLock); 4414 thread = checkRecordThread_l(input); 4415 if (thread == NULL) { 4416 return BAD_VALUE; 4417 } 4418 4419 LOGV("closeInput() %d", input); 4420 void *param2 = 0; 4421 audioConfigChanged_l(AudioSystem::INPUT_CLOSED, input, param2); 4422 mRecordThreads.removeItem(input); 4423 } 4424 thread->exit(); 4425 4426 mAudioHardware->closeInputStream(thread->getInput()); 4427 4428 return NO_ERROR; 4429} 4430 4431status_t AudioFlinger::setStreamOutput(uint32_t stream, int output) 4432{ 4433 Mutex::Autolock _l(mLock); 4434 MixerThread *dstThread = checkMixerThread_l(output); 4435 if (dstThread == NULL) { 4436 LOGW("setStreamOutput() bad output id %d", output); 4437 return BAD_VALUE; 4438 } 4439 4440 LOGV("setStreamOutput() stream %d to output %d", stream, output); 4441 audioConfigChanged_l(AudioSystem::STREAM_CONFIG_CHANGED, output, &stream); 4442 4443 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4444 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 4445 if (thread != dstThread && 4446 thread->type() != PlaybackThread::DIRECT) { 4447 MixerThread *srcThread = (MixerThread *)thread; 4448 srcThread->invalidateTracks(stream); 4449 } 4450 } 4451 4452 return NO_ERROR; 4453} 4454 4455 4456int AudioFlinger::newAudioSessionId() 4457{ 4458 AutoMutex _l(mLock); 4459 return nextUniqueId_l(); 4460} 4461 4462// checkPlaybackThread_l() must be called with AudioFlinger::mLock held 4463AudioFlinger::PlaybackThread *AudioFlinger::checkPlaybackThread_l(int output) const 4464{ 4465 PlaybackThread *thread = NULL; 4466 if (mPlaybackThreads.indexOfKey(output) >= 0) { 4467 thread = (PlaybackThread *)mPlaybackThreads.valueFor(output).get(); 4468 } 4469 return thread; 4470} 4471 4472// checkMixerThread_l() must be called with AudioFlinger::mLock held 4473AudioFlinger::MixerThread *AudioFlinger::checkMixerThread_l(int output) const 4474{ 4475 PlaybackThread *thread = checkPlaybackThread_l(output); 4476 if (thread != NULL) { 4477 if (thread->type() == PlaybackThread::DIRECT) { 4478 thread = NULL; 4479 } 4480 } 4481 return (MixerThread *)thread; 4482} 4483 4484// checkRecordThread_l() must be called with AudioFlinger::mLock held 4485AudioFlinger::RecordThread *AudioFlinger::checkRecordThread_l(int input) const 4486{ 4487 RecordThread *thread = NULL; 4488 if (mRecordThreads.indexOfKey(input) >= 0) { 4489 thread = (RecordThread *)mRecordThreads.valueFor(input).get(); 4490 } 4491 return thread; 4492} 4493 4494// nextUniqueId_l() must be called with AudioFlinger::mLock held 4495int AudioFlinger::nextUniqueId_l() 4496{ 4497 return mNextUniqueId++; 4498} 4499 4500// ---------------------------------------------------------------------------- 4501// Effect management 4502// ---------------------------------------------------------------------------- 4503 4504 4505status_t AudioFlinger::loadEffectLibrary(const char *libPath, int *handle) 4506{ 4507 // check calling permissions 4508 if (!settingsAllowed()) { 4509 return PERMISSION_DENIED; 4510 } 4511 // only allow libraries loaded from /system/lib/soundfx for now 4512 if (strncmp(gEffectLibPath, libPath, strlen(gEffectLibPath)) != 0) { 4513 return PERMISSION_DENIED; 4514 } 4515 4516 Mutex::Autolock _l(mLock); 4517 return EffectLoadLibrary(libPath, handle); 4518} 4519 4520status_t AudioFlinger::unloadEffectLibrary(int handle) 4521{ 4522 // check calling permissions 4523 if (!settingsAllowed()) { 4524 return PERMISSION_DENIED; 4525 } 4526 4527 Mutex::Autolock _l(mLock); 4528 return EffectUnloadLibrary(handle); 4529} 4530 4531status_t AudioFlinger::queryNumberEffects(uint32_t *numEffects) 4532{ 4533 Mutex::Autolock _l(mLock); 4534 return EffectQueryNumberEffects(numEffects); 4535} 4536 4537status_t AudioFlinger::queryEffect(uint32_t index, effect_descriptor_t *descriptor) 4538{ 4539 Mutex::Autolock _l(mLock); 4540 return EffectQueryEffect(index, descriptor); 4541} 4542 4543status_t AudioFlinger::getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor) 4544{ 4545 Mutex::Autolock _l(mLock); 4546 return EffectGetDescriptor(pUuid, descriptor); 4547} 4548 4549 4550// this UUID must match the one defined in media/libeffects/EffectVisualizer.cpp 4551static const effect_uuid_t VISUALIZATION_UUID_ = 4552 {0xd069d9e0, 0x8329, 0x11df, 0x9168, {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}}; 4553 4554sp<IEffect> AudioFlinger::createEffect(pid_t pid, 4555 effect_descriptor_t *pDesc, 4556 const sp<IEffectClient>& effectClient, 4557 int32_t priority, 4558 int output, 4559 int sessionId, 4560 status_t *status, 4561 int *id, 4562 int *enabled) 4563{ 4564 status_t lStatus = NO_ERROR; 4565 sp<EffectHandle> handle; 4566 effect_interface_t itfe; 4567 effect_descriptor_t desc; 4568 sp<Client> client; 4569 wp<Client> wclient; 4570 4571 LOGV("createEffect pid %d, client %p, priority %d, sessionId %d, output %d", 4572 pid, effectClient.get(), priority, sessionId, output); 4573 4574 if (pDesc == NULL) { 4575 lStatus = BAD_VALUE; 4576 goto Exit; 4577 } 4578 4579 // check audio settings permission for global effects 4580 if (sessionId == AudioSystem::SESSION_OUTPUT_MIX && !settingsAllowed()) { 4581 lStatus = PERMISSION_DENIED; 4582 goto Exit; 4583 } 4584 4585 // Session AudioSystem::SESSION_OUTPUT_STAGE is reserved for output stage effects 4586 // that can only be created by audio policy manager (running in same process) 4587 if (sessionId == AudioSystem::SESSION_OUTPUT_STAGE && getpid() != pid) { 4588 lStatus = PERMISSION_DENIED; 4589 goto Exit; 4590 } 4591 4592 // check recording permission for visualizer 4593 if ((memcmp(&pDesc->type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0 || 4594 memcmp(&pDesc->uuid, &VISUALIZATION_UUID_, sizeof(effect_uuid_t)) == 0) && 4595 !recordingAllowed()) { 4596 lStatus = PERMISSION_DENIED; 4597 goto Exit; 4598 } 4599 4600 if (output == 0) { 4601 if (sessionId == AudioSystem::SESSION_OUTPUT_STAGE) { 4602 // output must be specified by AudioPolicyManager when using session 4603 // AudioSystem::SESSION_OUTPUT_STAGE 4604 lStatus = BAD_VALUE; 4605 goto Exit; 4606 } else if (sessionId == AudioSystem::SESSION_OUTPUT_MIX) { 4607 // if the output returned by getOutputForEffect() is removed before we lock the 4608 // mutex below, the call to checkPlaybackThread_l(output) below will detect it 4609 // and we will exit safely 4610 output = AudioSystem::getOutputForEffect(&desc); 4611 } 4612 } 4613 4614 { 4615 Mutex::Autolock _l(mLock); 4616 4617 4618 if (!EffectIsNullUuid(&pDesc->uuid)) { 4619 // if uuid is specified, request effect descriptor 4620 lStatus = EffectGetDescriptor(&pDesc->uuid, &desc); 4621 if (lStatus < 0) { 4622 LOGW("createEffect() error %d from EffectGetDescriptor", lStatus); 4623 goto Exit; 4624 } 4625 } else { 4626 // if uuid is not specified, look for an available implementation 4627 // of the required type in effect factory 4628 if (EffectIsNullUuid(&pDesc->type)) { 4629 LOGW("createEffect() no effect type"); 4630 lStatus = BAD_VALUE; 4631 goto Exit; 4632 } 4633 uint32_t numEffects = 0; 4634 effect_descriptor_t d; 4635 bool found = false; 4636 4637 lStatus = EffectQueryNumberEffects(&numEffects); 4638 if (lStatus < 0) { 4639 LOGW("createEffect() error %d from EffectQueryNumberEffects", lStatus); 4640 goto Exit; 4641 } 4642 for (uint32_t i = 0; i < numEffects; i++) { 4643 lStatus = EffectQueryEffect(i, &desc); 4644 if (lStatus < 0) { 4645 LOGW("createEffect() error %d from EffectQueryEffect", lStatus); 4646 continue; 4647 } 4648 if (memcmp(&desc.type, &pDesc->type, sizeof(effect_uuid_t)) == 0) { 4649 // If matching type found save effect descriptor. If the session is 4650 // 0 and the effect is not auxiliary, continue enumeration in case 4651 // an auxiliary version of this effect type is available 4652 found = true; 4653 memcpy(&d, &desc, sizeof(effect_descriptor_t)); 4654 if (sessionId != AudioSystem::SESSION_OUTPUT_MIX || 4655 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 4656 break; 4657 } 4658 } 4659 } 4660 if (!found) { 4661 lStatus = BAD_VALUE; 4662 LOGW("createEffect() effect not found"); 4663 goto Exit; 4664 } 4665 // For same effect type, chose auxiliary version over insert version if 4666 // connect to output mix (Compliance to OpenSL ES) 4667 if (sessionId == AudioSystem::SESSION_OUTPUT_MIX && 4668 (d.flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_AUXILIARY) { 4669 memcpy(&desc, &d, sizeof(effect_descriptor_t)); 4670 } 4671 } 4672 4673 // Do not allow auxiliary effects on a session different from 0 (output mix) 4674 if (sessionId != AudioSystem::SESSION_OUTPUT_MIX && 4675 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 4676 lStatus = INVALID_OPERATION; 4677 goto Exit; 4678 } 4679 4680 // return effect descriptor 4681 memcpy(pDesc, &desc, sizeof(effect_descriptor_t)); 4682 4683 // If output is not specified try to find a matching audio session ID in one of the 4684 // output threads. 4685 // If output is 0 here, sessionId is neither SESSION_OUTPUT_STAGE nor SESSION_OUTPUT_MIX 4686 // because of code checking output when entering the function. 4687 if (output == 0) { 4688 // look for the thread where the specified audio session is present 4689 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4690 if (mPlaybackThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 4691 output = mPlaybackThreads.keyAt(i); 4692 break; 4693 } 4694 } 4695 // If no output thread contains the requested session ID, default to 4696 // first output. The effect chain will be moved to the correct output 4697 // thread when a track with the same session ID is created 4698 if (output == 0 && mPlaybackThreads.size()) { 4699 output = mPlaybackThreads.keyAt(0); 4700 } 4701 } 4702 LOGV("createEffect() got output %d for effect %s", output, desc.name); 4703 PlaybackThread *thread = checkPlaybackThread_l(output); 4704 if (thread == NULL) { 4705 LOGE("createEffect() unknown output thread"); 4706 lStatus = BAD_VALUE; 4707 goto Exit; 4708 } 4709 4710 // TODO: allow attachment of effect to inputs 4711 4712 wclient = mClients.valueFor(pid); 4713 4714 if (wclient != NULL) { 4715 client = wclient.promote(); 4716 } else { 4717 client = new Client(this, pid); 4718 mClients.add(pid, client); 4719 } 4720 4721 // create effect on selected output trhead 4722 handle = thread->createEffect_l(client, effectClient, priority, sessionId, 4723 &desc, enabled, &lStatus); 4724 if (handle != 0 && id != NULL) { 4725 *id = handle->id(); 4726 } 4727 } 4728 4729Exit: 4730 if(status) { 4731 *status = lStatus; 4732 } 4733 return handle; 4734} 4735 4736status_t AudioFlinger::moveEffects(int session, int srcOutput, int dstOutput) 4737{ 4738 LOGV("moveEffects() session %d, srcOutput %d, dstOutput %d", 4739 session, srcOutput, dstOutput); 4740 Mutex::Autolock _l(mLock); 4741 if (srcOutput == dstOutput) { 4742 LOGW("moveEffects() same dst and src outputs %d", dstOutput); 4743 return NO_ERROR; 4744 } 4745 PlaybackThread *srcThread = checkPlaybackThread_l(srcOutput); 4746 if (srcThread == NULL) { 4747 LOGW("moveEffects() bad srcOutput %d", srcOutput); 4748 return BAD_VALUE; 4749 } 4750 PlaybackThread *dstThread = checkPlaybackThread_l(dstOutput); 4751 if (dstThread == NULL) { 4752 LOGW("moveEffects() bad dstOutput %d", dstOutput); 4753 return BAD_VALUE; 4754 } 4755 4756 Mutex::Autolock _dl(dstThread->mLock); 4757 Mutex::Autolock _sl(srcThread->mLock); 4758 moveEffectChain_l(session, srcThread, dstThread, false); 4759 4760 return NO_ERROR; 4761} 4762 4763// moveEffectChain_l mustbe called with both srcThread and dstThread mLocks held 4764status_t AudioFlinger::moveEffectChain_l(int session, 4765 AudioFlinger::PlaybackThread *srcThread, 4766 AudioFlinger::PlaybackThread *dstThread, 4767 bool reRegister) 4768{ 4769 LOGV("moveEffectChain_l() session %d from thread %p to thread %p", 4770 session, srcThread, dstThread); 4771 4772 sp<EffectChain> chain = srcThread->getEffectChain_l(session); 4773 if (chain == 0) { 4774 LOGW("moveEffectChain_l() effect chain for session %d not on source thread %p", 4775 session, srcThread); 4776 return INVALID_OPERATION; 4777 } 4778 4779 // remove chain first. This is useful only if reconfiguring effect chain on same output thread, 4780 // so that a new chain is created with correct parameters when first effect is added. This is 4781 // otherwise unecessary as removeEffect_l() will remove the chain when last effect is 4782 // removed. 4783 srcThread->removeEffectChain_l(chain); 4784 4785 // transfer all effects one by one so that new effect chain is created on new thread with 4786 // correct buffer sizes and audio parameters and effect engines reconfigured accordingly 4787 int dstOutput = dstThread->id(); 4788 sp<EffectChain> dstChain; 4789 uint32_t strategy; 4790 sp<EffectModule> effect = chain->getEffectFromId_l(0); 4791 while (effect != 0) { 4792 srcThread->removeEffect_l(effect); 4793 dstThread->addEffect_l(effect); 4794 // if the move request is not received from audio policy manager, the effect must be 4795 // re-registered with the new strategy and output 4796 if (dstChain == 0) { 4797 dstChain = effect->chain().promote(); 4798 if (dstChain == 0) { 4799 LOGW("moveEffectChain_l() cannot get chain from effect %p", effect.get()); 4800 srcThread->addEffect_l(effect); 4801 return NO_INIT; 4802 } 4803 strategy = dstChain->strategy(); 4804 } 4805 if (reRegister) { 4806 AudioSystem::unregisterEffect(effect->id()); 4807 AudioSystem::registerEffect(&effect->desc(), 4808 dstOutput, 4809 strategy, 4810 session, 4811 effect->id()); 4812 } 4813 effect = chain->getEffectFromId_l(0); 4814 } 4815 4816 return NO_ERROR; 4817} 4818 4819// PlaybackThread::createEffect_l() must be called with AudioFlinger::mLock held 4820sp<AudioFlinger::EffectHandle> AudioFlinger::PlaybackThread::createEffect_l( 4821 const sp<AudioFlinger::Client>& client, 4822 const sp<IEffectClient>& effectClient, 4823 int32_t priority, 4824 int sessionId, 4825 effect_descriptor_t *desc, 4826 int *enabled, 4827 status_t *status 4828 ) 4829{ 4830 sp<EffectModule> effect; 4831 sp<EffectHandle> handle; 4832 status_t lStatus; 4833 sp<Track> track; 4834 sp<EffectChain> chain; 4835 bool chainCreated = false; 4836 bool effectCreated = false; 4837 bool effectRegistered = false; 4838 4839 if (mOutput == 0) { 4840 LOGW("createEffect_l() Audio driver not initialized."); 4841 lStatus = NO_INIT; 4842 goto Exit; 4843 } 4844 4845 // Do not allow auxiliary effect on session other than 0 4846 if ((desc->flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY && 4847 sessionId != AudioSystem::SESSION_OUTPUT_MIX) { 4848 LOGW("createEffect_l() Cannot add auxiliary effect %s to session %d", 4849 desc->name, sessionId); 4850 lStatus = BAD_VALUE; 4851 goto Exit; 4852 } 4853 4854 // Do not allow effects with session ID 0 on direct output or duplicating threads 4855 // TODO: add rule for hw accelerated effects on direct outputs with non PCM format 4856 if (sessionId == AudioSystem::SESSION_OUTPUT_MIX && mType != MIXER) { 4857 LOGW("createEffect_l() Cannot add auxiliary effect %s to session %d", 4858 desc->name, sessionId); 4859 lStatus = BAD_VALUE; 4860 goto Exit; 4861 } 4862 4863 LOGV("createEffect_l() thread %p effect %s on session %d", this, desc->name, sessionId); 4864 4865 { // scope for mLock 4866 Mutex::Autolock _l(mLock); 4867 4868 // check for existing effect chain with the requested audio session 4869 chain = getEffectChain_l(sessionId); 4870 if (chain == 0) { 4871 // create a new chain for this session 4872 LOGV("createEffect_l() new effect chain for session %d", sessionId); 4873 chain = new EffectChain(this, sessionId); 4874 addEffectChain_l(chain); 4875 chain->setStrategy(getStrategyForSession_l(sessionId)); 4876 chainCreated = true; 4877 } else { 4878 effect = chain->getEffectFromDesc_l(desc); 4879 } 4880 4881 LOGV("createEffect_l() got effect %p on chain %p", effect == 0 ? 0 : effect.get(), chain.get()); 4882 4883 if (effect == 0) { 4884 int id = mAudioFlinger->nextUniqueId_l(); 4885 // Check CPU and memory usage 4886 lStatus = AudioSystem::registerEffect(desc, mId, chain->strategy(), sessionId, id); 4887 if (lStatus != NO_ERROR) { 4888 goto Exit; 4889 } 4890 effectRegistered = true; 4891 // create a new effect module if none present in the chain 4892 effect = new EffectModule(this, chain, desc, id, sessionId); 4893 lStatus = effect->status(); 4894 if (lStatus != NO_ERROR) { 4895 goto Exit; 4896 } 4897 lStatus = chain->addEffect_l(effect); 4898 if (lStatus != NO_ERROR) { 4899 goto Exit; 4900 } 4901 effectCreated = true; 4902 4903 effect->setDevice(mDevice); 4904 effect->setMode(mAudioFlinger->getMode()); 4905 } 4906 // create effect handle and connect it to effect module 4907 handle = new EffectHandle(effect, client, effectClient, priority); 4908 lStatus = effect->addHandle(handle); 4909 if (enabled) { 4910 *enabled = (int)effect->isEnabled(); 4911 } 4912 } 4913 4914Exit: 4915 if (lStatus != NO_ERROR && lStatus != ALREADY_EXISTS) { 4916 Mutex::Autolock _l(mLock); 4917 if (effectCreated) { 4918 chain->removeEffect_l(effect); 4919 } 4920 if (effectRegistered) { 4921 AudioSystem::unregisterEffect(effect->id()); 4922 } 4923 if (chainCreated) { 4924 removeEffectChain_l(chain); 4925 } 4926 handle.clear(); 4927 } 4928 4929 if(status) { 4930 *status = lStatus; 4931 } 4932 return handle; 4933} 4934 4935// PlaybackThread::addEffect_l() must be called with AudioFlinger::mLock and 4936// PlaybackThread::mLock held 4937status_t AudioFlinger::PlaybackThread::addEffect_l(const sp<EffectModule>& effect) 4938{ 4939 // check for existing effect chain with the requested audio session 4940 int sessionId = effect->sessionId(); 4941 sp<EffectChain> chain = getEffectChain_l(sessionId); 4942 bool chainCreated = false; 4943 4944 if (chain == 0) { 4945 // create a new chain for this session 4946 LOGV("addEffect_l() new effect chain for session %d", sessionId); 4947 chain = new EffectChain(this, sessionId); 4948 addEffectChain_l(chain); 4949 chain->setStrategy(getStrategyForSession_l(sessionId)); 4950 chainCreated = true; 4951 } 4952 LOGV("addEffect_l() %p chain %p effect %p", this, chain.get(), effect.get()); 4953 4954 if (chain->getEffectFromId_l(effect->id()) != 0) { 4955 LOGW("addEffect_l() %p effect %s already present in chain %p", 4956 this, effect->desc().name, chain.get()); 4957 return BAD_VALUE; 4958 } 4959 4960 status_t status = chain->addEffect_l(effect); 4961 if (status != NO_ERROR) { 4962 if (chainCreated) { 4963 removeEffectChain_l(chain); 4964 } 4965 return status; 4966 } 4967 4968 effect->setDevice(mDevice); 4969 effect->setMode(mAudioFlinger->getMode()); 4970 return NO_ERROR; 4971} 4972 4973void AudioFlinger::PlaybackThread::removeEffect_l(const sp<EffectModule>& effect) { 4974 4975 LOGV("removeEffect_l() %p effect %p", this, effect.get()); 4976 effect_descriptor_t desc = effect->desc(); 4977 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 4978 detachAuxEffect_l(effect->id()); 4979 } 4980 4981 sp<EffectChain> chain = effect->chain().promote(); 4982 if (chain != 0) { 4983 // remove effect chain if removing last effect 4984 if (chain->removeEffect_l(effect) == 0) { 4985 removeEffectChain_l(chain); 4986 } 4987 } else { 4988 LOGW("removeEffect_l() %p cannot promote chain for effect %p", this, effect.get()); 4989 } 4990} 4991 4992void AudioFlinger::PlaybackThread::disconnectEffect(const sp<EffectModule>& effect, 4993 const wp<EffectHandle>& handle) { 4994 Mutex::Autolock _l(mLock); 4995 LOGV("disconnectEffect() %p effect %p", this, effect.get()); 4996 // delete the effect module if removing last handle on it 4997 if (effect->removeHandle(handle) == 0) { 4998 removeEffect_l(effect); 4999 AudioSystem::unregisterEffect(effect->id()); 5000 } 5001} 5002 5003status_t AudioFlinger::PlaybackThread::addEffectChain_l(const sp<EffectChain>& chain) 5004{ 5005 int session = chain->sessionId(); 5006 int16_t *buffer = mMixBuffer; 5007 bool ownsBuffer = false; 5008 5009 LOGV("addEffectChain_l() %p on thread %p for session %d", chain.get(), this, session); 5010 if (session > 0) { 5011 // Only one effect chain can be present in direct output thread and it uses 5012 // the mix buffer as input 5013 if (mType != DIRECT) { 5014 size_t numSamples = mFrameCount * mChannelCount; 5015 buffer = new int16_t[numSamples]; 5016 memset(buffer, 0, numSamples * sizeof(int16_t)); 5017 LOGV("addEffectChain_l() creating new input buffer %p session %d", buffer, session); 5018 ownsBuffer = true; 5019 } 5020 5021 // Attach all tracks with same session ID to this chain. 5022 for (size_t i = 0; i < mTracks.size(); ++i) { 5023 sp<Track> track = mTracks[i]; 5024 if (session == track->sessionId()) { 5025 LOGV("addEffectChain_l() track->setMainBuffer track %p buffer %p", track.get(), buffer); 5026 track->setMainBuffer(buffer); 5027 } 5028 } 5029 5030 // indicate all active tracks in the chain 5031 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5032 sp<Track> track = mActiveTracks[i].promote(); 5033 if (track == 0) continue; 5034 if (session == track->sessionId()) { 5035 LOGV("addEffectChain_l() activating track %p on session %d", track.get(), session); 5036 chain->startTrack(); 5037 } 5038 } 5039 } 5040 5041 chain->setInBuffer(buffer, ownsBuffer); 5042 chain->setOutBuffer(mMixBuffer); 5043 // Effect chain for session AudioSystem::SESSION_OUTPUT_STAGE is inserted at end of effect 5044 // chains list in order to be processed last as it contains output stage effects 5045 // Effect chain for session AudioSystem::SESSION_OUTPUT_MIX is inserted before 5046 // session AudioSystem::SESSION_OUTPUT_STAGE to be processed 5047 // after track specific effects and before output stage 5048 // It is therefore mandatory that AudioSystem::SESSION_OUTPUT_MIX == 0 and 5049 // that AudioSystem::SESSION_OUTPUT_STAGE < AudioSystem::SESSION_OUTPUT_MIX 5050 // Effect chain for other sessions are inserted at beginning of effect 5051 // chains list to be processed before output mix effects. Relative order between other 5052 // sessions is not important 5053 size_t size = mEffectChains.size(); 5054 size_t i = 0; 5055 for (i = 0; i < size; i++) { 5056 if (mEffectChains[i]->sessionId() < session) break; 5057 } 5058 mEffectChains.insertAt(chain, i); 5059 5060 return NO_ERROR; 5061} 5062 5063size_t AudioFlinger::PlaybackThread::removeEffectChain_l(const sp<EffectChain>& chain) 5064{ 5065 int session = chain->sessionId(); 5066 5067 LOGV("removeEffectChain_l() %p from thread %p for session %d", chain.get(), this, session); 5068 5069 for (size_t i = 0; i < mEffectChains.size(); i++) { 5070 if (chain == mEffectChains[i]) { 5071 mEffectChains.removeAt(i); 5072 // detach all tracks with same session ID from this chain 5073 for (size_t i = 0; i < mTracks.size(); ++i) { 5074 sp<Track> track = mTracks[i]; 5075 if (session == track->sessionId()) { 5076 track->setMainBuffer(mMixBuffer); 5077 } 5078 } 5079 break; 5080 } 5081 } 5082 return mEffectChains.size(); 5083} 5084 5085void AudioFlinger::PlaybackThread::lockEffectChains_l( 5086 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5087{ 5088 effectChains = mEffectChains; 5089 for (size_t i = 0; i < mEffectChains.size(); i++) { 5090 mEffectChains[i]->lock(); 5091 } 5092} 5093 5094void AudioFlinger::PlaybackThread::unlockEffectChains( 5095 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5096{ 5097 for (size_t i = 0; i < effectChains.size(); i++) { 5098 effectChains[i]->unlock(); 5099 } 5100} 5101 5102 5103sp<AudioFlinger::EffectModule> AudioFlinger::PlaybackThread::getEffect_l(int sessionId, int effectId) 5104{ 5105 sp<EffectModule> effect; 5106 5107 sp<EffectChain> chain = getEffectChain_l(sessionId); 5108 if (chain != 0) { 5109 effect = chain->getEffectFromId_l(effectId); 5110 } 5111 return effect; 5112} 5113 5114status_t AudioFlinger::PlaybackThread::attachAuxEffect( 5115 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5116{ 5117 Mutex::Autolock _l(mLock); 5118 return attachAuxEffect_l(track, EffectId); 5119} 5120 5121status_t AudioFlinger::PlaybackThread::attachAuxEffect_l( 5122 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5123{ 5124 status_t status = NO_ERROR; 5125 5126 if (EffectId == 0) { 5127 track->setAuxBuffer(0, NULL); 5128 } else { 5129 // Auxiliary effects are always in audio session AudioSystem::SESSION_OUTPUT_MIX 5130 sp<EffectModule> effect = getEffect_l(AudioSystem::SESSION_OUTPUT_MIX, EffectId); 5131 if (effect != 0) { 5132 if ((effect->desc().flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5133 track->setAuxBuffer(EffectId, (int32_t *)effect->inBuffer()); 5134 } else { 5135 status = INVALID_OPERATION; 5136 } 5137 } else { 5138 status = BAD_VALUE; 5139 } 5140 } 5141 return status; 5142} 5143 5144void AudioFlinger::PlaybackThread::detachAuxEffect_l(int effectId) 5145{ 5146 for (size_t i = 0; i < mTracks.size(); ++i) { 5147 sp<Track> track = mTracks[i]; 5148 if (track->auxEffectId() == effectId) { 5149 attachAuxEffect_l(track, 0); 5150 } 5151 } 5152} 5153 5154// ---------------------------------------------------------------------------- 5155// EffectModule implementation 5156// ---------------------------------------------------------------------------- 5157 5158#undef LOG_TAG 5159#define LOG_TAG "AudioFlinger::EffectModule" 5160 5161AudioFlinger::EffectModule::EffectModule(const wp<ThreadBase>& wThread, 5162 const wp<AudioFlinger::EffectChain>& chain, 5163 effect_descriptor_t *desc, 5164 int id, 5165 int sessionId) 5166 : mThread(wThread), mChain(chain), mId(id), mSessionId(sessionId), mEffectInterface(NULL), 5167 mStatus(NO_INIT), mState(IDLE) 5168{ 5169 LOGV("Constructor %p", this); 5170 int lStatus; 5171 sp<ThreadBase> thread = mThread.promote(); 5172 if (thread == 0) { 5173 return; 5174 } 5175 PlaybackThread *p = (PlaybackThread *)thread.get(); 5176 5177 memcpy(&mDescriptor, desc, sizeof(effect_descriptor_t)); 5178 5179 // create effect engine from effect factory 5180 mStatus = EffectCreate(&desc->uuid, sessionId, p->id(), &mEffectInterface); 5181 5182 if (mStatus != NO_ERROR) { 5183 return; 5184 } 5185 lStatus = init(); 5186 if (lStatus < 0) { 5187 mStatus = lStatus; 5188 goto Error; 5189 } 5190 5191 LOGV("Constructor success name %s, Interface %p", mDescriptor.name, mEffectInterface); 5192 return; 5193Error: 5194 EffectRelease(mEffectInterface); 5195 mEffectInterface = NULL; 5196 LOGV("Constructor Error %d", mStatus); 5197} 5198 5199AudioFlinger::EffectModule::~EffectModule() 5200{ 5201 LOGV("Destructor %p", this); 5202 if (mEffectInterface != NULL) { 5203 // release effect engine 5204 EffectRelease(mEffectInterface); 5205 } 5206} 5207 5208status_t AudioFlinger::EffectModule::addHandle(sp<EffectHandle>& handle) 5209{ 5210 status_t status; 5211 5212 Mutex::Autolock _l(mLock); 5213 // First handle in mHandles has highest priority and controls the effect module 5214 int priority = handle->priority(); 5215 size_t size = mHandles.size(); 5216 sp<EffectHandle> h; 5217 size_t i; 5218 for (i = 0; i < size; i++) { 5219 h = mHandles[i].promote(); 5220 if (h == 0) continue; 5221 if (h->priority() <= priority) break; 5222 } 5223 // if inserted in first place, move effect control from previous owner to this handle 5224 if (i == 0) { 5225 if (h != 0) { 5226 h->setControl(false, true); 5227 } 5228 handle->setControl(true, false); 5229 status = NO_ERROR; 5230 } else { 5231 status = ALREADY_EXISTS; 5232 } 5233 mHandles.insertAt(handle, i); 5234 return status; 5235} 5236 5237size_t AudioFlinger::EffectModule::removeHandle(const wp<EffectHandle>& handle) 5238{ 5239 Mutex::Autolock _l(mLock); 5240 size_t size = mHandles.size(); 5241 size_t i; 5242 for (i = 0; i < size; i++) { 5243 if (mHandles[i] == handle) break; 5244 } 5245 if (i == size) { 5246 return size; 5247 } 5248 mHandles.removeAt(i); 5249 size = mHandles.size(); 5250 // if removed from first place, move effect control from this handle to next in line 5251 if (i == 0 && size != 0) { 5252 sp<EffectHandle> h = mHandles[0].promote(); 5253 if (h != 0) { 5254 h->setControl(true, true); 5255 } 5256 } 5257 5258 // Release effect engine here so that it is done immediately. Otherwise it will be released 5259 // by the destructor when the last strong reference on the this object is released which can 5260 // happen after next process is called on this effect. 5261 if (size == 0 && mEffectInterface != NULL) { 5262 // release effect engine 5263 EffectRelease(mEffectInterface); 5264 mEffectInterface = NULL; 5265 } 5266 5267 return size; 5268} 5269 5270void AudioFlinger::EffectModule::disconnect(const wp<EffectHandle>& handle) 5271{ 5272 // keep a strong reference on this EffectModule to avoid calling the 5273 // destructor before we exit 5274 sp<EffectModule> keep(this); 5275 { 5276 sp<ThreadBase> thread = mThread.promote(); 5277 if (thread != 0) { 5278 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 5279 playbackThread->disconnectEffect(keep, handle); 5280 } 5281 } 5282} 5283 5284void AudioFlinger::EffectModule::updateState() { 5285 Mutex::Autolock _l(mLock); 5286 5287 switch (mState) { 5288 case RESTART: 5289 reset_l(); 5290 // FALL THROUGH 5291 5292 case STARTING: 5293 // clear auxiliary effect input buffer for next accumulation 5294 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5295 memset(mConfig.inputCfg.buffer.raw, 5296 0, 5297 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 5298 } 5299 start_l(); 5300 mState = ACTIVE; 5301 break; 5302 case STOPPING: 5303 stop_l(); 5304 mDisableWaitCnt = mMaxDisableWaitCnt; 5305 mState = STOPPED; 5306 break; 5307 case STOPPED: 5308 // mDisableWaitCnt is forced to 1 by process() when the engine indicates the end of the 5309 // turn off sequence. 5310 if (--mDisableWaitCnt == 0) { 5311 reset_l(); 5312 mState = IDLE; 5313 } 5314 break; 5315 default: //IDLE , ACTIVE 5316 break; 5317 } 5318} 5319 5320void AudioFlinger::EffectModule::process() 5321{ 5322 Mutex::Autolock _l(mLock); 5323 5324 if (mEffectInterface == NULL || 5325 mConfig.inputCfg.buffer.raw == NULL || 5326 mConfig.outputCfg.buffer.raw == NULL) { 5327 return; 5328 } 5329 5330 if (isProcessEnabled()) { 5331 // do 32 bit to 16 bit conversion for auxiliary effect input buffer 5332 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5333 AudioMixer::ditherAndClamp(mConfig.inputCfg.buffer.s32, 5334 mConfig.inputCfg.buffer.s32, 5335 mConfig.inputCfg.buffer.frameCount/2); 5336 } 5337 5338 // do the actual processing in the effect engine 5339 int ret = (*mEffectInterface)->process(mEffectInterface, 5340 &mConfig.inputCfg.buffer, 5341 &mConfig.outputCfg.buffer); 5342 5343 // force transition to IDLE state when engine is ready 5344 if (mState == STOPPED && ret == -ENODATA) { 5345 mDisableWaitCnt = 1; 5346 } 5347 5348 // clear auxiliary effect input buffer for next accumulation 5349 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5350 memset(mConfig.inputCfg.buffer.raw, 0, 5351 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 5352 } 5353 } else if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_INSERT && 5354 mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 5355 // If an insert effect is idle and input buffer is different from output buffer, 5356 // accumulate input onto output 5357 sp<EffectChain> chain = mChain.promote(); 5358 if (chain != 0 && chain->activeTracks() != 0) { 5359 size_t frameCnt = mConfig.inputCfg.buffer.frameCount * 2; //always stereo here 5360 int16_t *in = mConfig.inputCfg.buffer.s16; 5361 int16_t *out = mConfig.outputCfg.buffer.s16; 5362 for (size_t i = 0; i < frameCnt; i++) { 5363 out[i] = clamp16((int32_t)out[i] + (int32_t)in[i]); 5364 } 5365 } 5366 } 5367} 5368 5369void AudioFlinger::EffectModule::reset_l() 5370{ 5371 if (mEffectInterface == NULL) { 5372 return; 5373 } 5374 (*mEffectInterface)->command(mEffectInterface, EFFECT_CMD_RESET, 0, NULL, 0, NULL); 5375} 5376 5377status_t AudioFlinger::EffectModule::configure() 5378{ 5379 uint32_t channels; 5380 if (mEffectInterface == NULL) { 5381 return NO_INIT; 5382 } 5383 5384 sp<ThreadBase> thread = mThread.promote(); 5385 if (thread == 0) { 5386 return DEAD_OBJECT; 5387 } 5388 5389 // TODO: handle configuration of effects replacing track process 5390 if (thread->channelCount() == 1) { 5391 channels = CHANNEL_MONO; 5392 } else { 5393 channels = CHANNEL_STEREO; 5394 } 5395 5396 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5397 mConfig.inputCfg.channels = CHANNEL_MONO; 5398 } else { 5399 mConfig.inputCfg.channels = channels; 5400 } 5401 mConfig.outputCfg.channels = channels; 5402 mConfig.inputCfg.format = SAMPLE_FORMAT_PCM_S15; 5403 mConfig.outputCfg.format = SAMPLE_FORMAT_PCM_S15; 5404 mConfig.inputCfg.samplingRate = thread->sampleRate(); 5405 mConfig.outputCfg.samplingRate = mConfig.inputCfg.samplingRate; 5406 mConfig.inputCfg.bufferProvider.cookie = NULL; 5407 mConfig.inputCfg.bufferProvider.getBuffer = NULL; 5408 mConfig.inputCfg.bufferProvider.releaseBuffer = NULL; 5409 mConfig.outputCfg.bufferProvider.cookie = NULL; 5410 mConfig.outputCfg.bufferProvider.getBuffer = NULL; 5411 mConfig.outputCfg.bufferProvider.releaseBuffer = NULL; 5412 mConfig.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ; 5413 // Insert effect: 5414 // - in session AudioSystem::SESSION_OUTPUT_MIX or AudioSystem::SESSION_OUTPUT_STAGE, 5415 // always overwrites output buffer: input buffer == output buffer 5416 // - in other sessions: 5417 // last effect in the chain accumulates in output buffer: input buffer != output buffer 5418 // other effect: overwrites output buffer: input buffer == output buffer 5419 // Auxiliary effect: 5420 // accumulates in output buffer: input buffer != output buffer 5421 // Therefore: accumulate <=> input buffer != output buffer 5422 if (mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 5423 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE; 5424 } else { 5425 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_WRITE; 5426 } 5427 mConfig.inputCfg.mask = EFFECT_CONFIG_ALL; 5428 mConfig.outputCfg.mask = EFFECT_CONFIG_ALL; 5429 mConfig.inputCfg.buffer.frameCount = thread->frameCount(); 5430 mConfig.outputCfg.buffer.frameCount = mConfig.inputCfg.buffer.frameCount; 5431 5432 LOGV("configure() %p thread %p buffer %p framecount %d", 5433 this, thread.get(), mConfig.inputCfg.buffer.raw, mConfig.inputCfg.buffer.frameCount); 5434 5435 status_t cmdStatus; 5436 uint32_t size = sizeof(int); 5437 status_t status = (*mEffectInterface)->command(mEffectInterface, 5438 EFFECT_CMD_CONFIGURE, 5439 sizeof(effect_config_t), 5440 &mConfig, 5441 &size, 5442 &cmdStatus); 5443 if (status == 0) { 5444 status = cmdStatus; 5445 } 5446 5447 mMaxDisableWaitCnt = (MAX_DISABLE_TIME_MS * mConfig.outputCfg.samplingRate) / 5448 (1000 * mConfig.outputCfg.buffer.frameCount); 5449 5450 return status; 5451} 5452 5453status_t AudioFlinger::EffectModule::init() 5454{ 5455 Mutex::Autolock _l(mLock); 5456 if (mEffectInterface == NULL) { 5457 return NO_INIT; 5458 } 5459 status_t cmdStatus; 5460 uint32_t size = sizeof(status_t); 5461 status_t status = (*mEffectInterface)->command(mEffectInterface, 5462 EFFECT_CMD_INIT, 5463 0, 5464 NULL, 5465 &size, 5466 &cmdStatus); 5467 if (status == 0) { 5468 status = cmdStatus; 5469 } 5470 return status; 5471} 5472 5473status_t AudioFlinger::EffectModule::start_l() 5474{ 5475 if (mEffectInterface == NULL) { 5476 return NO_INIT; 5477 } 5478 status_t cmdStatus; 5479 uint32_t size = sizeof(status_t); 5480 status_t status = (*mEffectInterface)->command(mEffectInterface, 5481 EFFECT_CMD_ENABLE, 5482 0, 5483 NULL, 5484 &size, 5485 &cmdStatus); 5486 if (status == 0) { 5487 status = cmdStatus; 5488 } 5489 return status; 5490} 5491 5492status_t AudioFlinger::EffectModule::stop_l() 5493{ 5494 if (mEffectInterface == NULL) { 5495 return NO_INIT; 5496 } 5497 status_t cmdStatus; 5498 uint32_t size = sizeof(status_t); 5499 status_t status = (*mEffectInterface)->command(mEffectInterface, 5500 EFFECT_CMD_DISABLE, 5501 0, 5502 NULL, 5503 &size, 5504 &cmdStatus); 5505 if (status == 0) { 5506 status = cmdStatus; 5507 } 5508 return status; 5509} 5510 5511status_t AudioFlinger::EffectModule::command(uint32_t cmdCode, 5512 uint32_t cmdSize, 5513 void *pCmdData, 5514 uint32_t *replySize, 5515 void *pReplyData) 5516{ 5517 Mutex::Autolock _l(mLock); 5518// LOGV("command(), cmdCode: %d, mEffectInterface: %p", cmdCode, mEffectInterface); 5519 5520 if (mEffectInterface == NULL) { 5521 return NO_INIT; 5522 } 5523 status_t status = (*mEffectInterface)->command(mEffectInterface, 5524 cmdCode, 5525 cmdSize, 5526 pCmdData, 5527 replySize, 5528 pReplyData); 5529 if (cmdCode != EFFECT_CMD_GET_PARAM && status == NO_ERROR) { 5530 uint32_t size = (replySize == NULL) ? 0 : *replySize; 5531 for (size_t i = 1; i < mHandles.size(); i++) { 5532 sp<EffectHandle> h = mHandles[i].promote(); 5533 if (h != 0) { 5534 h->commandExecuted(cmdCode, cmdSize, pCmdData, size, pReplyData); 5535 } 5536 } 5537 } 5538 return status; 5539} 5540 5541status_t AudioFlinger::EffectModule::setEnabled(bool enabled) 5542{ 5543 Mutex::Autolock _l(mLock); 5544 LOGV("setEnabled %p enabled %d", this, enabled); 5545 5546 if (enabled != isEnabled()) { 5547 switch (mState) { 5548 // going from disabled to enabled 5549 case IDLE: 5550 mState = STARTING; 5551 break; 5552 case STOPPED: 5553 mState = RESTART; 5554 break; 5555 case STOPPING: 5556 mState = ACTIVE; 5557 break; 5558 5559 // going from enabled to disabled 5560 case RESTART: 5561 mState = STOPPED; 5562 break; 5563 case STARTING: 5564 mState = IDLE; 5565 break; 5566 case ACTIVE: 5567 mState = STOPPING; 5568 break; 5569 } 5570 for (size_t i = 1; i < mHandles.size(); i++) { 5571 sp<EffectHandle> h = mHandles[i].promote(); 5572 if (h != 0) { 5573 h->setEnabled(enabled); 5574 } 5575 } 5576 } 5577 return NO_ERROR; 5578} 5579 5580bool AudioFlinger::EffectModule::isEnabled() 5581{ 5582 switch (mState) { 5583 case RESTART: 5584 case STARTING: 5585 case ACTIVE: 5586 return true; 5587 case IDLE: 5588 case STOPPING: 5589 case STOPPED: 5590 default: 5591 return false; 5592 } 5593} 5594 5595bool AudioFlinger::EffectModule::isProcessEnabled() 5596{ 5597 switch (mState) { 5598 case RESTART: 5599 case ACTIVE: 5600 case STOPPING: 5601 case STOPPED: 5602 return true; 5603 case IDLE: 5604 case STARTING: 5605 default: 5606 return false; 5607 } 5608} 5609 5610status_t AudioFlinger::EffectModule::setVolume(uint32_t *left, uint32_t *right, bool controller) 5611{ 5612 Mutex::Autolock _l(mLock); 5613 status_t status = NO_ERROR; 5614 5615 // Send volume indication if EFFECT_FLAG_VOLUME_IND is set and read back altered volume 5616 // if controller flag is set (Note that controller == TRUE => EFFECT_FLAG_VOLUME_CTRL set) 5617 if (isProcessEnabled() && 5618 ((mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL || 5619 (mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_IND)) { 5620 status_t cmdStatus; 5621 uint32_t volume[2]; 5622 uint32_t *pVolume = NULL; 5623 uint32_t size = sizeof(volume); 5624 volume[0] = *left; 5625 volume[1] = *right; 5626 if (controller) { 5627 pVolume = volume; 5628 } 5629 status = (*mEffectInterface)->command(mEffectInterface, 5630 EFFECT_CMD_SET_VOLUME, 5631 size, 5632 volume, 5633 &size, 5634 pVolume); 5635 if (controller && status == NO_ERROR && size == sizeof(volume)) { 5636 *left = volume[0]; 5637 *right = volume[1]; 5638 } 5639 } 5640 return status; 5641} 5642 5643status_t AudioFlinger::EffectModule::setDevice(uint32_t device) 5644{ 5645 Mutex::Autolock _l(mLock); 5646 status_t status = NO_ERROR; 5647 if ((mDescriptor.flags & EFFECT_FLAG_DEVICE_MASK) == EFFECT_FLAG_DEVICE_IND) { 5648 // convert device bit field from AudioSystem to EffectApi format. 5649 device = deviceAudioSystemToEffectApi(device); 5650 if (device == 0) { 5651 return BAD_VALUE; 5652 } 5653 status_t cmdStatus; 5654 uint32_t size = sizeof(status_t); 5655 status = (*mEffectInterface)->command(mEffectInterface, 5656 EFFECT_CMD_SET_DEVICE, 5657 sizeof(uint32_t), 5658 &device, 5659 &size, 5660 &cmdStatus); 5661 if (status == NO_ERROR) { 5662 status = cmdStatus; 5663 } 5664 } 5665 return status; 5666} 5667 5668status_t AudioFlinger::EffectModule::setMode(uint32_t mode) 5669{ 5670 Mutex::Autolock _l(mLock); 5671 status_t status = NO_ERROR; 5672 if ((mDescriptor.flags & EFFECT_FLAG_AUDIO_MODE_MASK) == EFFECT_FLAG_AUDIO_MODE_IND) { 5673 // convert audio mode from AudioSystem to EffectApi format. 5674 int effectMode = modeAudioSystemToEffectApi(mode); 5675 if (effectMode < 0) { 5676 return BAD_VALUE; 5677 } 5678 status_t cmdStatus; 5679 uint32_t size = sizeof(status_t); 5680 status = (*mEffectInterface)->command(mEffectInterface, 5681 EFFECT_CMD_SET_AUDIO_MODE, 5682 sizeof(int), 5683 &effectMode, 5684 &size, 5685 &cmdStatus); 5686 if (status == NO_ERROR) { 5687 status = cmdStatus; 5688 } 5689 } 5690 return status; 5691} 5692 5693// update this table when AudioSystem::audio_devices or audio_device_e (in EffectApi.h) are modified 5694const uint32_t AudioFlinger::EffectModule::sDeviceConvTable[] = { 5695 DEVICE_EARPIECE, // AudioSystem::DEVICE_OUT_EARPIECE 5696 DEVICE_SPEAKER, // AudioSystem::DEVICE_OUT_SPEAKER 5697 DEVICE_WIRED_HEADSET, // case AudioSystem::DEVICE_OUT_WIRED_HEADSET 5698 DEVICE_WIRED_HEADPHONE, // AudioSystem::DEVICE_OUT_WIRED_HEADPHONE 5699 DEVICE_BLUETOOTH_SCO, // AudioSystem::DEVICE_OUT_BLUETOOTH_SCO 5700 DEVICE_BLUETOOTH_SCO_HEADSET, // AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET 5701 DEVICE_BLUETOOTH_SCO_CARKIT, // AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT 5702 DEVICE_BLUETOOTH_A2DP, // AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP 5703 DEVICE_BLUETOOTH_A2DP_HEADPHONES, // AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES 5704 DEVICE_BLUETOOTH_A2DP_SPEAKER, // AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER 5705 DEVICE_AUX_DIGITAL // AudioSystem::DEVICE_OUT_AUX_DIGITAL 5706}; 5707 5708uint32_t AudioFlinger::EffectModule::deviceAudioSystemToEffectApi(uint32_t device) 5709{ 5710 uint32_t deviceOut = 0; 5711 while (device) { 5712 const uint32_t i = 31 - __builtin_clz(device); 5713 device &= ~(1 << i); 5714 if (i >= sizeof(sDeviceConvTable)/sizeof(uint32_t)) { 5715 LOGE("device convertion error for AudioSystem device 0x%08x", device); 5716 return 0; 5717 } 5718 deviceOut |= (uint32_t)sDeviceConvTable[i]; 5719 } 5720 return deviceOut; 5721} 5722 5723// update this table when AudioSystem::audio_mode or audio_mode_e (in EffectApi.h) are modified 5724const uint32_t AudioFlinger::EffectModule::sModeConvTable[] = { 5725 AUDIO_MODE_NORMAL, // AudioSystem::MODE_NORMAL 5726 AUDIO_MODE_RINGTONE, // AudioSystem::MODE_RINGTONE 5727 AUDIO_MODE_IN_CALL, // AudioSystem::MODE_IN_CALL 5728 AUDIO_MODE_IN_CALL // AudioSystem::MODE_IN_COMMUNICATION, same conversion as for MODE_IN_CALL 5729}; 5730 5731int AudioFlinger::EffectModule::modeAudioSystemToEffectApi(uint32_t mode) 5732{ 5733 int modeOut = -1; 5734 if (mode < sizeof(sModeConvTable) / sizeof(uint32_t)) { 5735 modeOut = (int)sModeConvTable[mode]; 5736 } 5737 return modeOut; 5738} 5739 5740status_t AudioFlinger::EffectModule::dump(int fd, const Vector<String16>& args) 5741{ 5742 const size_t SIZE = 256; 5743 char buffer[SIZE]; 5744 String8 result; 5745 5746 snprintf(buffer, SIZE, "\tEffect ID %d:\n", mId); 5747 result.append(buffer); 5748 5749 bool locked = tryLock(mLock); 5750 // failed to lock - AudioFlinger is probably deadlocked 5751 if (!locked) { 5752 result.append("\t\tCould not lock Fx mutex:\n"); 5753 } 5754 5755 result.append("\t\tSession Status State Engine:\n"); 5756 snprintf(buffer, SIZE, "\t\t%05d %03d %03d 0x%08x\n", 5757 mSessionId, mStatus, mState, (uint32_t)mEffectInterface); 5758 result.append(buffer); 5759 5760 result.append("\t\tDescriptor:\n"); 5761 snprintf(buffer, SIZE, "\t\t- UUID: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 5762 mDescriptor.uuid.timeLow, mDescriptor.uuid.timeMid, mDescriptor.uuid.timeHiAndVersion, 5763 mDescriptor.uuid.clockSeq, mDescriptor.uuid.node[0], mDescriptor.uuid.node[1],mDescriptor.uuid.node[2], 5764 mDescriptor.uuid.node[3],mDescriptor.uuid.node[4],mDescriptor.uuid.node[5]); 5765 result.append(buffer); 5766 snprintf(buffer, SIZE, "\t\t- TYPE: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 5767 mDescriptor.type.timeLow, mDescriptor.type.timeMid, mDescriptor.type.timeHiAndVersion, 5768 mDescriptor.type.clockSeq, mDescriptor.type.node[0], mDescriptor.type.node[1],mDescriptor.type.node[2], 5769 mDescriptor.type.node[3],mDescriptor.type.node[4],mDescriptor.type.node[5]); 5770 result.append(buffer); 5771 snprintf(buffer, SIZE, "\t\t- apiVersion: %04X\n\t\t- flags: %08X\n", 5772 mDescriptor.apiVersion, 5773 mDescriptor.flags); 5774 result.append(buffer); 5775 snprintf(buffer, SIZE, "\t\t- name: %s\n", 5776 mDescriptor.name); 5777 result.append(buffer); 5778 snprintf(buffer, SIZE, "\t\t- implementor: %s\n", 5779 mDescriptor.implementor); 5780 result.append(buffer); 5781 5782 result.append("\t\t- Input configuration:\n"); 5783 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 5784 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 5785 (uint32_t)mConfig.inputCfg.buffer.raw, 5786 mConfig.inputCfg.buffer.frameCount, 5787 mConfig.inputCfg.samplingRate, 5788 mConfig.inputCfg.channels, 5789 mConfig.inputCfg.format); 5790 result.append(buffer); 5791 5792 result.append("\t\t- Output configuration:\n"); 5793 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 5794 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 5795 (uint32_t)mConfig.outputCfg.buffer.raw, 5796 mConfig.outputCfg.buffer.frameCount, 5797 mConfig.outputCfg.samplingRate, 5798 mConfig.outputCfg.channels, 5799 mConfig.outputCfg.format); 5800 result.append(buffer); 5801 5802 snprintf(buffer, SIZE, "\t\t%d Clients:\n", mHandles.size()); 5803 result.append(buffer); 5804 result.append("\t\t\tPid Priority Ctrl Locked client server\n"); 5805 for (size_t i = 0; i < mHandles.size(); ++i) { 5806 sp<EffectHandle> handle = mHandles[i].promote(); 5807 if (handle != 0) { 5808 handle->dump(buffer, SIZE); 5809 result.append(buffer); 5810 } 5811 } 5812 5813 result.append("\n"); 5814 5815 write(fd, result.string(), result.length()); 5816 5817 if (locked) { 5818 mLock.unlock(); 5819 } 5820 5821 return NO_ERROR; 5822} 5823 5824// ---------------------------------------------------------------------------- 5825// EffectHandle implementation 5826// ---------------------------------------------------------------------------- 5827 5828#undef LOG_TAG 5829#define LOG_TAG "AudioFlinger::EffectHandle" 5830 5831AudioFlinger::EffectHandle::EffectHandle(const sp<EffectModule>& effect, 5832 const sp<AudioFlinger::Client>& client, 5833 const sp<IEffectClient>& effectClient, 5834 int32_t priority) 5835 : BnEffect(), 5836 mEffect(effect), mEffectClient(effectClient), mClient(client), mPriority(priority), mHasControl(false) 5837{ 5838 LOGV("constructor %p", this); 5839 5840 int bufOffset = ((sizeof(effect_param_cblk_t) - 1) / sizeof(int) + 1) * sizeof(int); 5841 mCblkMemory = client->heap()->allocate(EFFECT_PARAM_BUFFER_SIZE + bufOffset); 5842 if (mCblkMemory != 0) { 5843 mCblk = static_cast<effect_param_cblk_t *>(mCblkMemory->pointer()); 5844 5845 if (mCblk) { 5846 new(mCblk) effect_param_cblk_t(); 5847 mBuffer = (uint8_t *)mCblk + bufOffset; 5848 } 5849 } else { 5850 LOGE("not enough memory for Effect size=%u", EFFECT_PARAM_BUFFER_SIZE + sizeof(effect_param_cblk_t)); 5851 return; 5852 } 5853} 5854 5855AudioFlinger::EffectHandle::~EffectHandle() 5856{ 5857 LOGV("Destructor %p", this); 5858 disconnect(); 5859} 5860 5861status_t AudioFlinger::EffectHandle::enable() 5862{ 5863 if (!mHasControl) return INVALID_OPERATION; 5864 if (mEffect == 0) return DEAD_OBJECT; 5865 5866 return mEffect->setEnabled(true); 5867} 5868 5869status_t AudioFlinger::EffectHandle::disable() 5870{ 5871 if (!mHasControl) return INVALID_OPERATION; 5872 if (mEffect == NULL) return DEAD_OBJECT; 5873 5874 return mEffect->setEnabled(false); 5875} 5876 5877void AudioFlinger::EffectHandle::disconnect() 5878{ 5879 if (mEffect == 0) { 5880 return; 5881 } 5882 mEffect->disconnect(this); 5883 // release sp on module => module destructor can be called now 5884 mEffect.clear(); 5885 if (mCblk) { 5886 mCblk->~effect_param_cblk_t(); // destroy our shared-structure. 5887 } 5888 mCblkMemory.clear(); // and free the shared memory 5889 if (mClient != 0) { 5890 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 5891 mClient.clear(); 5892 } 5893} 5894 5895status_t AudioFlinger::EffectHandle::command(uint32_t cmdCode, 5896 uint32_t cmdSize, 5897 void *pCmdData, 5898 uint32_t *replySize, 5899 void *pReplyData) 5900{ 5901// LOGV("command(), cmdCode: %d, mHasControl: %d, mEffect: %p", 5902// cmdCode, mHasControl, (mEffect == 0) ? 0 : mEffect.get()); 5903 5904 // only get parameter command is permitted for applications not controlling the effect 5905 if (!mHasControl && cmdCode != EFFECT_CMD_GET_PARAM) { 5906 return INVALID_OPERATION; 5907 } 5908 if (mEffect == 0) return DEAD_OBJECT; 5909 5910 // handle commands that are not forwarded transparently to effect engine 5911 if (cmdCode == EFFECT_CMD_SET_PARAM_COMMIT) { 5912 // No need to trylock() here as this function is executed in the binder thread serving a particular client process: 5913 // no risk to block the whole media server process or mixer threads is we are stuck here 5914 Mutex::Autolock _l(mCblk->lock); 5915 if (mCblk->clientIndex > EFFECT_PARAM_BUFFER_SIZE || 5916 mCblk->serverIndex > EFFECT_PARAM_BUFFER_SIZE) { 5917 mCblk->serverIndex = 0; 5918 mCblk->clientIndex = 0; 5919 return BAD_VALUE; 5920 } 5921 status_t status = NO_ERROR; 5922 while (mCblk->serverIndex < mCblk->clientIndex) { 5923 int reply; 5924 uint32_t rsize = sizeof(int); 5925 int *p = (int *)(mBuffer + mCblk->serverIndex); 5926 int size = *p++; 5927 if (((uint8_t *)p + size) > mBuffer + mCblk->clientIndex) { 5928 LOGW("command(): invalid parameter block size"); 5929 break; 5930 } 5931 effect_param_t *param = (effect_param_t *)p; 5932 if (param->psize == 0 || param->vsize == 0) { 5933 LOGW("command(): null parameter or value size"); 5934 mCblk->serverIndex += size; 5935 continue; 5936 } 5937 uint32_t psize = sizeof(effect_param_t) + 5938 ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + 5939 param->vsize; 5940 status_t ret = mEffect->command(EFFECT_CMD_SET_PARAM, 5941 psize, 5942 p, 5943 &rsize, 5944 &reply); 5945 // stop at first error encountered 5946 if (ret != NO_ERROR) { 5947 status = ret; 5948 *(int *)pReplyData = reply; 5949 break; 5950 } else if (reply != NO_ERROR) { 5951 *(int *)pReplyData = reply; 5952 break; 5953 } 5954 mCblk->serverIndex += size; 5955 } 5956 mCblk->serverIndex = 0; 5957 mCblk->clientIndex = 0; 5958 return status; 5959 } else if (cmdCode == EFFECT_CMD_ENABLE) { 5960 *(int *)pReplyData = NO_ERROR; 5961 return enable(); 5962 } else if (cmdCode == EFFECT_CMD_DISABLE) { 5963 *(int *)pReplyData = NO_ERROR; 5964 return disable(); 5965 } 5966 5967 return mEffect->command(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 5968} 5969 5970sp<IMemory> AudioFlinger::EffectHandle::getCblk() const { 5971 return mCblkMemory; 5972} 5973 5974void AudioFlinger::EffectHandle::setControl(bool hasControl, bool signal) 5975{ 5976 LOGV("setControl %p control %d", this, hasControl); 5977 5978 mHasControl = hasControl; 5979 if (signal && mEffectClient != 0) { 5980 mEffectClient->controlStatusChanged(hasControl); 5981 } 5982} 5983 5984void AudioFlinger::EffectHandle::commandExecuted(uint32_t cmdCode, 5985 uint32_t cmdSize, 5986 void *pCmdData, 5987 uint32_t replySize, 5988 void *pReplyData) 5989{ 5990 if (mEffectClient != 0) { 5991 mEffectClient->commandExecuted(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 5992 } 5993} 5994 5995 5996 5997void AudioFlinger::EffectHandle::setEnabled(bool enabled) 5998{ 5999 if (mEffectClient != 0) { 6000 mEffectClient->enableStatusChanged(enabled); 6001 } 6002} 6003 6004status_t AudioFlinger::EffectHandle::onTransact( 6005 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 6006{ 6007 return BnEffect::onTransact(code, data, reply, flags); 6008} 6009 6010 6011void AudioFlinger::EffectHandle::dump(char* buffer, size_t size) 6012{ 6013 bool locked = tryLock(mCblk->lock); 6014 6015 snprintf(buffer, size, "\t\t\t%05d %05d %01u %01u %05u %05u\n", 6016 (mClient == NULL) ? getpid() : mClient->pid(), 6017 mPriority, 6018 mHasControl, 6019 !locked, 6020 mCblk->clientIndex, 6021 mCblk->serverIndex 6022 ); 6023 6024 if (locked) { 6025 mCblk->lock.unlock(); 6026 } 6027} 6028 6029#undef LOG_TAG 6030#define LOG_TAG "AudioFlinger::EffectChain" 6031 6032AudioFlinger::EffectChain::EffectChain(const wp<ThreadBase>& wThread, 6033 int sessionId) 6034 : mThread(wThread), mSessionId(sessionId), mActiveTrackCnt(0), mOwnInBuffer(false), 6035 mVolumeCtrlIdx(-1), mLeftVolume(UINT_MAX), mRightVolume(UINT_MAX), 6036 mNewLeftVolume(UINT_MAX), mNewRightVolume(UINT_MAX) 6037{ 6038 mStrategy = AudioSystem::getStrategyForStream(AudioSystem::MUSIC); 6039} 6040 6041AudioFlinger::EffectChain::~EffectChain() 6042{ 6043 if (mOwnInBuffer) { 6044 delete mInBuffer; 6045 } 6046 6047} 6048 6049// getEffectFromDesc_l() must be called with PlaybackThread::mLock held 6050sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromDesc_l(effect_descriptor_t *descriptor) 6051{ 6052 sp<EffectModule> effect; 6053 size_t size = mEffects.size(); 6054 6055 for (size_t i = 0; i < size; i++) { 6056 if (memcmp(&mEffects[i]->desc().uuid, &descriptor->uuid, sizeof(effect_uuid_t)) == 0) { 6057 effect = mEffects[i]; 6058 break; 6059 } 6060 } 6061 return effect; 6062} 6063 6064// getEffectFromId_l() must be called with PlaybackThread::mLock held 6065sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromId_l(int id) 6066{ 6067 sp<EffectModule> effect; 6068 size_t size = mEffects.size(); 6069 6070 for (size_t i = 0; i < size; i++) { 6071 // by convention, return first effect if id provided is 0 (0 is never a valid id) 6072 if (id == 0 || mEffects[i]->id() == id) { 6073 effect = mEffects[i]; 6074 break; 6075 } 6076 } 6077 return effect; 6078} 6079 6080// Must be called with EffectChain::mLock locked 6081void AudioFlinger::EffectChain::process_l() 6082{ 6083 sp<ThreadBase> thread = mThread.promote(); 6084 if (thread == 0) { 6085 LOGW("process_l(): cannot promote mixer thread"); 6086 return; 6087 } 6088 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 6089 bool isGlobalSession = (mSessionId == AudioSystem::SESSION_OUTPUT_MIX) || 6090 (mSessionId == AudioSystem::SESSION_OUTPUT_STAGE); 6091 bool tracksOnSession = false; 6092 if (!isGlobalSession) { 6093 tracksOnSession = 6094 playbackThread->hasAudioSession(mSessionId) & PlaybackThread::TRACK_SESSION; 6095 } 6096 6097 size_t size = mEffects.size(); 6098 // do not process effect if no track is present in same audio session 6099 if (isGlobalSession || tracksOnSession) { 6100 for (size_t i = 0; i < size; i++) { 6101 mEffects[i]->process(); 6102 } 6103 } 6104 for (size_t i = 0; i < size; i++) { 6105 mEffects[i]->updateState(); 6106 } 6107 // if no track is active, input buffer must be cleared here as the mixer process 6108 // will not do it 6109 if (tracksOnSession && 6110 activeTracks() == 0) { 6111 size_t numSamples = playbackThread->frameCount() * playbackThread->channelCount(); 6112 memset(mInBuffer, 0, numSamples * sizeof(int16_t)); 6113 } 6114} 6115 6116// addEffect_l() must be called with PlaybackThread::mLock held 6117status_t AudioFlinger::EffectChain::addEffect_l(const sp<EffectModule>& effect) 6118{ 6119 effect_descriptor_t desc = effect->desc(); 6120 uint32_t insertPref = desc.flags & EFFECT_FLAG_INSERT_MASK; 6121 6122 Mutex::Autolock _l(mLock); 6123 effect->setChain(this); 6124 sp<ThreadBase> thread = mThread.promote(); 6125 if (thread == 0) { 6126 return NO_INIT; 6127 } 6128 effect->setThread(thread); 6129 6130 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6131 // Auxiliary effects are inserted at the beginning of mEffects vector as 6132 // they are processed first and accumulated in chain input buffer 6133 mEffects.insertAt(effect, 0); 6134 6135 // the input buffer for auxiliary effect contains mono samples in 6136 // 32 bit format. This is to avoid saturation in AudoMixer 6137 // accumulation stage. Saturation is done in EffectModule::process() before 6138 // calling the process in effect engine 6139 size_t numSamples = thread->frameCount(); 6140 int32_t *buffer = new int32_t[numSamples]; 6141 memset(buffer, 0, numSamples * sizeof(int32_t)); 6142 effect->setInBuffer((int16_t *)buffer); 6143 // auxiliary effects output samples to chain input buffer for further processing 6144 // by insert effects 6145 effect->setOutBuffer(mInBuffer); 6146 } else { 6147 // Insert effects are inserted at the end of mEffects vector as they are processed 6148 // after track and auxiliary effects. 6149 // Insert effect order as a function of indicated preference: 6150 // if EFFECT_FLAG_INSERT_EXCLUSIVE, insert in first position or reject if 6151 // another effect is present 6152 // else if EFFECT_FLAG_INSERT_FIRST, insert in first position or after the 6153 // last effect claiming first position 6154 // else if EFFECT_FLAG_INSERT_LAST, insert in last position or before the 6155 // first effect claiming last position 6156 // else if EFFECT_FLAG_INSERT_ANY insert after first or before last 6157 // Reject insertion if an effect with EFFECT_FLAG_INSERT_EXCLUSIVE is 6158 // already present 6159 6160 int size = (int)mEffects.size(); 6161 int idx_insert = size; 6162 int idx_insert_first = -1; 6163 int idx_insert_last = -1; 6164 6165 for (int i = 0; i < size; i++) { 6166 effect_descriptor_t d = mEffects[i]->desc(); 6167 uint32_t iMode = d.flags & EFFECT_FLAG_TYPE_MASK; 6168 uint32_t iPref = d.flags & EFFECT_FLAG_INSERT_MASK; 6169 if (iMode == EFFECT_FLAG_TYPE_INSERT) { 6170 // check invalid effect chaining combinations 6171 if (insertPref == EFFECT_FLAG_INSERT_EXCLUSIVE || 6172 iPref == EFFECT_FLAG_INSERT_EXCLUSIVE) { 6173 LOGW("addEffect_l() could not insert effect %s: exclusive conflict with %s", desc.name, d.name); 6174 return INVALID_OPERATION; 6175 } 6176 // remember position of first insert effect and by default 6177 // select this as insert position for new effect 6178 if (idx_insert == size) { 6179 idx_insert = i; 6180 } 6181 // remember position of last insert effect claiming 6182 // first position 6183 if (iPref == EFFECT_FLAG_INSERT_FIRST) { 6184 idx_insert_first = i; 6185 } 6186 // remember position of first insert effect claiming 6187 // last position 6188 if (iPref == EFFECT_FLAG_INSERT_LAST && 6189 idx_insert_last == -1) { 6190 idx_insert_last = i; 6191 } 6192 } 6193 } 6194 6195 // modify idx_insert from first position if needed 6196 if (insertPref == EFFECT_FLAG_INSERT_LAST) { 6197 if (idx_insert_last != -1) { 6198 idx_insert = idx_insert_last; 6199 } else { 6200 idx_insert = size; 6201 } 6202 } else { 6203 if (idx_insert_first != -1) { 6204 idx_insert = idx_insert_first + 1; 6205 } 6206 } 6207 6208 // always read samples from chain input buffer 6209 effect->setInBuffer(mInBuffer); 6210 6211 // if last effect in the chain, output samples to chain 6212 // output buffer, otherwise to chain input buffer 6213 if (idx_insert == size) { 6214 if (idx_insert != 0) { 6215 mEffects[idx_insert-1]->setOutBuffer(mInBuffer); 6216 mEffects[idx_insert-1]->configure(); 6217 } 6218 effect->setOutBuffer(mOutBuffer); 6219 } else { 6220 effect->setOutBuffer(mInBuffer); 6221 } 6222 mEffects.insertAt(effect, idx_insert); 6223 6224 LOGV("addEffect_l() effect %p, added in chain %p at rank %d", effect.get(), this, idx_insert); 6225 } 6226 effect->configure(); 6227 return NO_ERROR; 6228} 6229 6230// removeEffect_l() must be called with PlaybackThread::mLock held 6231size_t AudioFlinger::EffectChain::removeEffect_l(const sp<EffectModule>& effect) 6232{ 6233 Mutex::Autolock _l(mLock); 6234 int size = (int)mEffects.size(); 6235 int i; 6236 uint32_t type = effect->desc().flags & EFFECT_FLAG_TYPE_MASK; 6237 6238 for (i = 0; i < size; i++) { 6239 if (effect == mEffects[i]) { 6240 if (type == EFFECT_FLAG_TYPE_AUXILIARY) { 6241 delete[] effect->inBuffer(); 6242 } else { 6243 if (i == size - 1 && i != 0) { 6244 mEffects[i - 1]->setOutBuffer(mOutBuffer); 6245 mEffects[i - 1]->configure(); 6246 } 6247 } 6248 mEffects.removeAt(i); 6249 LOGV("removeEffect_l() effect %p, removed from chain %p at rank %d", effect.get(), this, i); 6250 break; 6251 } 6252 } 6253 6254 return mEffects.size(); 6255} 6256 6257// setDevice_l() must be called with PlaybackThread::mLock held 6258void AudioFlinger::EffectChain::setDevice_l(uint32_t device) 6259{ 6260 size_t size = mEffects.size(); 6261 for (size_t i = 0; i < size; i++) { 6262 mEffects[i]->setDevice(device); 6263 } 6264} 6265 6266// setMode_l() must be called with PlaybackThread::mLock held 6267void AudioFlinger::EffectChain::setMode_l(uint32_t mode) 6268{ 6269 size_t size = mEffects.size(); 6270 for (size_t i = 0; i < size; i++) { 6271 mEffects[i]->setMode(mode); 6272 } 6273} 6274 6275// setVolume_l() must be called with PlaybackThread::mLock held 6276bool AudioFlinger::EffectChain::setVolume_l(uint32_t *left, uint32_t *right) 6277{ 6278 uint32_t newLeft = *left; 6279 uint32_t newRight = *right; 6280 bool hasControl = false; 6281 int ctrlIdx = -1; 6282 size_t size = mEffects.size(); 6283 6284 // first update volume controller 6285 for (size_t i = size; i > 0; i--) { 6286 if (mEffects[i - 1]->isProcessEnabled() && 6287 (mEffects[i - 1]->desc().flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL) { 6288 ctrlIdx = i - 1; 6289 hasControl = true; 6290 break; 6291 } 6292 } 6293 6294 if (ctrlIdx == mVolumeCtrlIdx && *left == mLeftVolume && *right == mRightVolume) { 6295 if (hasControl) { 6296 *left = mNewLeftVolume; 6297 *right = mNewRightVolume; 6298 } 6299 return hasControl; 6300 } 6301 6302 mVolumeCtrlIdx = ctrlIdx; 6303 mLeftVolume = newLeft; 6304 mRightVolume = newRight; 6305 6306 // second get volume update from volume controller 6307 if (ctrlIdx >= 0) { 6308 mEffects[ctrlIdx]->setVolume(&newLeft, &newRight, true); 6309 mNewLeftVolume = newLeft; 6310 mNewRightVolume = newRight; 6311 } 6312 // then indicate volume to all other effects in chain. 6313 // Pass altered volume to effects before volume controller 6314 // and requested volume to effects after controller 6315 uint32_t lVol = newLeft; 6316 uint32_t rVol = newRight; 6317 6318 for (size_t i = 0; i < size; i++) { 6319 if ((int)i == ctrlIdx) continue; 6320 // this also works for ctrlIdx == -1 when there is no volume controller 6321 if ((int)i > ctrlIdx) { 6322 lVol = *left; 6323 rVol = *right; 6324 } 6325 mEffects[i]->setVolume(&lVol, &rVol, false); 6326 } 6327 *left = newLeft; 6328 *right = newRight; 6329 6330 return hasControl; 6331} 6332 6333status_t AudioFlinger::EffectChain::dump(int fd, const Vector<String16>& args) 6334{ 6335 const size_t SIZE = 256; 6336 char buffer[SIZE]; 6337 String8 result; 6338 6339 snprintf(buffer, SIZE, "Effects for session %d:\n", mSessionId); 6340 result.append(buffer); 6341 6342 bool locked = tryLock(mLock); 6343 // failed to lock - AudioFlinger is probably deadlocked 6344 if (!locked) { 6345 result.append("\tCould not lock mutex:\n"); 6346 } 6347 6348 result.append("\tNum fx In buffer Out buffer Active tracks:\n"); 6349 snprintf(buffer, SIZE, "\t%02d 0x%08x 0x%08x %d\n", 6350 mEffects.size(), 6351 (uint32_t)mInBuffer, 6352 (uint32_t)mOutBuffer, 6353 mActiveTrackCnt); 6354 result.append(buffer); 6355 write(fd, result.string(), result.size()); 6356 6357 for (size_t i = 0; i < mEffects.size(); ++i) { 6358 sp<EffectModule> effect = mEffects[i]; 6359 if (effect != 0) { 6360 effect->dump(fd, args); 6361 } 6362 } 6363 6364 if (locked) { 6365 mLock.unlock(); 6366 } 6367 6368 return NO_ERROR; 6369} 6370 6371#undef LOG_TAG 6372#define LOG_TAG "AudioFlinger" 6373 6374// ---------------------------------------------------------------------------- 6375 6376status_t AudioFlinger::onTransact( 6377 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 6378{ 6379 return BnAudioFlinger::onTransact(code, data, reply, flags); 6380} 6381 6382}; // namespace android 6383