AudioFlinger.cpp revision edc15ad8fcde12dc4f642d80d077239b1532eeca
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#include <utils/Atomic.h> 35 36#include <cutils/bitops.h> 37#include <cutils/properties.h> 38 39#include <media/AudioTrack.h> 40#include <media/AudioRecord.h> 41#include <media/IMediaPlayerService.h> 42 43#include <private/media/AudioTrackShared.h> 44#include <private/media/AudioEffectShared.h> 45 46#include <system/audio.h> 47#include <hardware/audio.h> 48 49#include "AudioMixer.h" 50#include "AudioFlinger.h" 51 52#include <media/EffectsFactoryApi.h> 53#include <audio_effects/effect_visualizer.h> 54 55#include <cpustats/ThreadCpuUsage.h> 56// #define DEBUG_CPU_USAGE 10 // log statistics every n wall clock seconds 57 58// ---------------------------------------------------------------------------- 59 60 61namespace android { 62 63static const char* kDeadlockedString = "AudioFlinger may be deadlocked\n"; 64static const char* kHardwareLockedString = "Hardware lock is taken\n"; 65 66//static const nsecs_t kStandbyTimeInNsecs = seconds(3); 67static const float MAX_GAIN = 4096.0f; 68static const float MAX_GAIN_INT = 0x1000; 69 70// retry counts for buffer fill timeout 71// 50 * ~20msecs = 1 second 72static const int8_t kMaxTrackRetries = 50; 73static const int8_t kMaxTrackStartupRetries = 50; 74// allow less retry attempts on direct output thread. 75// direct outputs can be a scarce resource in audio hardware and should 76// be released as quickly as possible. 77static const int8_t kMaxTrackRetriesDirect = 2; 78 79static const int kDumpLockRetries = 50; 80static const int kDumpLockSleep = 20000; 81 82static const nsecs_t kWarningThrottle = seconds(5); 83 84// RecordThread loop sleep time upon application overrun or audio HAL read error 85static const int kRecordThreadSleepUs = 5000; 86 87// ---------------------------------------------------------------------------- 88 89static bool recordingAllowed() { 90 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 91 bool ok = checkCallingPermission(String16("android.permission.RECORD_AUDIO")); 92 if (!ok) LOGE("Request requires android.permission.RECORD_AUDIO"); 93 return ok; 94} 95 96static bool settingsAllowed() { 97 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 98 bool ok = checkCallingPermission(String16("android.permission.MODIFY_AUDIO_SETTINGS")); 99 if (!ok) LOGE("Request requires android.permission.MODIFY_AUDIO_SETTINGS"); 100 return ok; 101} 102 103// To collect the amplifier usage 104static void addBatteryData(uint32_t params) { 105 sp<IBinder> binder = 106 defaultServiceManager()->getService(String16("media.player")); 107 sp<IMediaPlayerService> service = interface_cast<IMediaPlayerService>(binder); 108 if (service.get() == NULL) { 109 LOGW("Cannot connect to the MediaPlayerService for battery tracking"); 110 return; 111 } 112 113 service->addBatteryData(params); 114} 115 116static int load_audio_interface(const char *if_name, const hw_module_t **mod, 117 audio_hw_device_t **dev) 118{ 119 int rc; 120 121 rc = hw_get_module_by_class(AUDIO_HARDWARE_MODULE_ID, if_name, mod); 122 if (rc) 123 goto out; 124 125 rc = audio_hw_device_open(*mod, dev); 126 LOGE_IF(rc, "couldn't open audio hw device in %s.%s (%s)", 127 AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc)); 128 if (rc) 129 goto out; 130 131 return 0; 132 133out: 134 *mod = NULL; 135 *dev = NULL; 136 return rc; 137} 138 139static const char *audio_interfaces[] = { 140 "primary", 141 "a2dp", 142 "usb", 143}; 144#define ARRAY_SIZE(x) (sizeof((x))/sizeof(((x)[0]))) 145 146// ---------------------------------------------------------------------------- 147 148AudioFlinger::AudioFlinger() 149 : BnAudioFlinger(), 150 mPrimaryHardwareDev(0), mMasterVolume(1.0f), mMasterMute(false), mNextUniqueId(1) 151{ 152} 153 154void AudioFlinger::onFirstRef() 155{ 156 int rc = 0; 157 158 Mutex::Autolock _l(mLock); 159 160 /* TODO: move all this work into an Init() function */ 161 mHardwareStatus = AUDIO_HW_IDLE; 162 163 for (size_t i = 0; i < ARRAY_SIZE(audio_interfaces); i++) { 164 const hw_module_t *mod; 165 audio_hw_device_t *dev; 166 167 rc = load_audio_interface(audio_interfaces[i], &mod, &dev); 168 if (rc) 169 continue; 170 171 LOGI("Loaded %s audio interface from %s (%s)", audio_interfaces[i], 172 mod->name, mod->id); 173 mAudioHwDevs.push(dev); 174 175 if (!mPrimaryHardwareDev) { 176 mPrimaryHardwareDev = dev; 177 LOGI("Using '%s' (%s.%s) as the primary audio interface", 178 mod->name, mod->id, audio_interfaces[i]); 179 } 180 } 181 182 mHardwareStatus = AUDIO_HW_INIT; 183 184 if (!mPrimaryHardwareDev || mAudioHwDevs.size() == 0) { 185 LOGE("Primary audio interface not found"); 186 return; 187 } 188 189 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 190 audio_hw_device_t *dev = mAudioHwDevs[i]; 191 192 mHardwareStatus = AUDIO_HW_INIT; 193 rc = dev->init_check(dev); 194 if (rc == 0) { 195 AutoMutex lock(mHardwareLock); 196 197 mMode = AUDIO_MODE_NORMAL; 198 mHardwareStatus = AUDIO_HW_SET_MODE; 199 dev->set_mode(dev, mMode); 200 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 201 dev->set_master_volume(dev, 1.0f); 202 mHardwareStatus = AUDIO_HW_IDLE; 203 } 204 } 205} 206 207status_t AudioFlinger::initCheck() const 208{ 209 Mutex::Autolock _l(mLock); 210 if (mPrimaryHardwareDev == NULL || mAudioHwDevs.size() == 0) 211 return NO_INIT; 212 return NO_ERROR; 213} 214 215AudioFlinger::~AudioFlinger() 216{ 217 int num_devs = mAudioHwDevs.size(); 218 219 while (!mRecordThreads.isEmpty()) { 220 // closeInput() will remove first entry from mRecordThreads 221 closeInput(mRecordThreads.keyAt(0)); 222 } 223 while (!mPlaybackThreads.isEmpty()) { 224 // closeOutput() will remove first entry from mPlaybackThreads 225 closeOutput(mPlaybackThreads.keyAt(0)); 226 } 227 228 for (int i = 0; i < num_devs; i++) { 229 audio_hw_device_t *dev = mAudioHwDevs[i]; 230 audio_hw_device_close(dev); 231 } 232 mAudioHwDevs.clear(); 233} 234 235audio_hw_device_t* AudioFlinger::findSuitableHwDev_l(uint32_t devices) 236{ 237 /* first matching HW device is returned */ 238 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 239 audio_hw_device_t *dev = mAudioHwDevs[i]; 240 if ((dev->get_supported_devices(dev) & devices) == devices) 241 return dev; 242 } 243 return NULL; 244} 245 246status_t AudioFlinger::dumpClients(int fd, const Vector<String16>& args) 247{ 248 const size_t SIZE = 256; 249 char buffer[SIZE]; 250 String8 result; 251 252 result.append("Clients:\n"); 253 for (size_t i = 0; i < mClients.size(); ++i) { 254 wp<Client> wClient = mClients.valueAt(i); 255 if (wClient != 0) { 256 sp<Client> client = wClient.promote(); 257 if (client != 0) { 258 snprintf(buffer, SIZE, " pid: %d\n", client->pid()); 259 result.append(buffer); 260 } 261 } 262 } 263 write(fd, result.string(), result.size()); 264 return NO_ERROR; 265} 266 267 268status_t AudioFlinger::dumpInternals(int fd, const Vector<String16>& args) 269{ 270 const size_t SIZE = 256; 271 char buffer[SIZE]; 272 String8 result; 273 int hardwareStatus = mHardwareStatus; 274 275 snprintf(buffer, SIZE, "Hardware status: %d\n", hardwareStatus); 276 result.append(buffer); 277 write(fd, result.string(), result.size()); 278 return NO_ERROR; 279} 280 281status_t AudioFlinger::dumpPermissionDenial(int fd, const Vector<String16>& args) 282{ 283 const size_t SIZE = 256; 284 char buffer[SIZE]; 285 String8 result; 286 snprintf(buffer, SIZE, "Permission Denial: " 287 "can't dump AudioFlinger from pid=%d, uid=%d\n", 288 IPCThreadState::self()->getCallingPid(), 289 IPCThreadState::self()->getCallingUid()); 290 result.append(buffer); 291 write(fd, result.string(), result.size()); 292 return NO_ERROR; 293} 294 295static bool tryLock(Mutex& mutex) 296{ 297 bool locked = false; 298 for (int i = 0; i < kDumpLockRetries; ++i) { 299 if (mutex.tryLock() == NO_ERROR) { 300 locked = true; 301 break; 302 } 303 usleep(kDumpLockSleep); 304 } 305 return locked; 306} 307 308status_t AudioFlinger::dump(int fd, const Vector<String16>& args) 309{ 310 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 311 dumpPermissionDenial(fd, args); 312 } else { 313 // get state of hardware lock 314 bool hardwareLocked = tryLock(mHardwareLock); 315 if (!hardwareLocked) { 316 String8 result(kHardwareLockedString); 317 write(fd, result.string(), result.size()); 318 } else { 319 mHardwareLock.unlock(); 320 } 321 322 bool locked = tryLock(mLock); 323 324 // failed to lock - AudioFlinger is probably deadlocked 325 if (!locked) { 326 String8 result(kDeadlockedString); 327 write(fd, result.string(), result.size()); 328 } 329 330 dumpClients(fd, args); 331 dumpInternals(fd, args); 332 333 // dump playback threads 334 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 335 mPlaybackThreads.valueAt(i)->dump(fd, args); 336 } 337 338 // dump record threads 339 for (size_t i = 0; i < mRecordThreads.size(); i++) { 340 mRecordThreads.valueAt(i)->dump(fd, args); 341 } 342 343 // dump all hardware devs 344 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 345 audio_hw_device_t *dev = mAudioHwDevs[i]; 346 dev->dump(dev, fd); 347 } 348 if (locked) mLock.unlock(); 349 } 350 return NO_ERROR; 351} 352 353 354// IAudioFlinger interface 355 356 357sp<IAudioTrack> AudioFlinger::createTrack( 358 pid_t pid, 359 int streamType, 360 uint32_t sampleRate, 361 uint32_t format, 362 uint32_t channelMask, 363 int frameCount, 364 uint32_t flags, 365 const sp<IMemory>& sharedBuffer, 366 int output, 367 int *sessionId, 368 status_t *status) 369{ 370 sp<PlaybackThread::Track> track; 371 sp<TrackHandle> trackHandle; 372 sp<Client> client; 373 wp<Client> wclient; 374 status_t lStatus; 375 int lSessionId; 376 377 if (streamType >= AUDIO_STREAM_CNT) { 378 LOGE("invalid stream type"); 379 lStatus = BAD_VALUE; 380 goto Exit; 381 } 382 383 { 384 Mutex::Autolock _l(mLock); 385 PlaybackThread *thread = checkPlaybackThread_l(output); 386 PlaybackThread *effectThread = NULL; 387 if (thread == NULL) { 388 LOGE("unknown output thread"); 389 lStatus = BAD_VALUE; 390 goto Exit; 391 } 392 393 wclient = mClients.valueFor(pid); 394 395 if (wclient != NULL) { 396 client = wclient.promote(); 397 } else { 398 client = new Client(this, pid); 399 mClients.add(pid, client); 400 } 401 402 LOGV("createTrack() sessionId: %d", (sessionId == NULL) ? -2 : *sessionId); 403 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 404 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 405 sp<PlaybackThread> t = mPlaybackThreads.valueAt(i); 406 if (mPlaybackThreads.keyAt(i) != output) { 407 // prevent same audio session on different output threads 408 uint32_t sessions = t->hasAudioSession(*sessionId); 409 if (sessions & PlaybackThread::TRACK_SESSION) { 410 lStatus = BAD_VALUE; 411 goto Exit; 412 } 413 // check if an effect with same session ID is waiting for a track to be created 414 if (sessions & PlaybackThread::EFFECT_SESSION) { 415 effectThread = t.get(); 416 } 417 } 418 } 419 lSessionId = *sessionId; 420 } else { 421 // if no audio session id is provided, create one here 422 lSessionId = nextUniqueId(); 423 if (sessionId != NULL) { 424 *sessionId = lSessionId; 425 } 426 } 427 LOGV("createTrack() lSessionId: %d", lSessionId); 428 429 track = thread->createTrack_l(client, streamType, sampleRate, format, 430 channelMask, frameCount, sharedBuffer, lSessionId, &lStatus); 431 432 // move effect chain to this output thread if an effect on same session was waiting 433 // for a track to be created 434 if (lStatus == NO_ERROR && effectThread != NULL) { 435 Mutex::Autolock _dl(thread->mLock); 436 Mutex::Autolock _sl(effectThread->mLock); 437 moveEffectChain_l(lSessionId, effectThread, thread, true); 438 } 439 } 440 if (lStatus == NO_ERROR) { 441 trackHandle = new TrackHandle(track); 442 } else { 443 // remove local strong reference to Client before deleting the Track so that the Client 444 // destructor is called by the TrackBase destructor with mLock held 445 client.clear(); 446 track.clear(); 447 } 448 449Exit: 450 if(status) { 451 *status = lStatus; 452 } 453 return trackHandle; 454} 455 456uint32_t AudioFlinger::sampleRate(int output) const 457{ 458 Mutex::Autolock _l(mLock); 459 PlaybackThread *thread = checkPlaybackThread_l(output); 460 if (thread == NULL) { 461 LOGW("sampleRate() unknown thread %d", output); 462 return 0; 463 } 464 return thread->sampleRate(); 465} 466 467int AudioFlinger::channelCount(int output) const 468{ 469 Mutex::Autolock _l(mLock); 470 PlaybackThread *thread = checkPlaybackThread_l(output); 471 if (thread == NULL) { 472 LOGW("channelCount() unknown thread %d", output); 473 return 0; 474 } 475 return thread->channelCount(); 476} 477 478uint32_t AudioFlinger::format(int output) const 479{ 480 Mutex::Autolock _l(mLock); 481 PlaybackThread *thread = checkPlaybackThread_l(output); 482 if (thread == NULL) { 483 LOGW("format() unknown thread %d", output); 484 return 0; 485 } 486 return thread->format(); 487} 488 489size_t AudioFlinger::frameCount(int output) const 490{ 491 Mutex::Autolock _l(mLock); 492 PlaybackThread *thread = checkPlaybackThread_l(output); 493 if (thread == NULL) { 494 LOGW("frameCount() unknown thread %d", output); 495 return 0; 496 } 497 return thread->frameCount(); 498} 499 500uint32_t AudioFlinger::latency(int output) const 501{ 502 Mutex::Autolock _l(mLock); 503 PlaybackThread *thread = checkPlaybackThread_l(output); 504 if (thread == NULL) { 505 LOGW("latency() unknown thread %d", output); 506 return 0; 507 } 508 return thread->latency(); 509} 510 511status_t AudioFlinger::setMasterVolume(float value) 512{ 513 // check calling permissions 514 if (!settingsAllowed()) { 515 return PERMISSION_DENIED; 516 } 517 518 // when hw supports master volume, don't scale in sw mixer 519 { // scope for the lock 520 AutoMutex lock(mHardwareLock); 521 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 522 if (mPrimaryHardwareDev->set_master_volume(mPrimaryHardwareDev, value) == NO_ERROR) { 523 value = 1.0f; 524 } 525 mHardwareStatus = AUDIO_HW_IDLE; 526 } 527 528 Mutex::Autolock _l(mLock); 529 mMasterVolume = value; 530 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 531 mPlaybackThreads.valueAt(i)->setMasterVolume(value); 532 533 return NO_ERROR; 534} 535 536status_t AudioFlinger::setMode(int mode) 537{ 538 status_t ret; 539 540 // check calling permissions 541 if (!settingsAllowed()) { 542 return PERMISSION_DENIED; 543 } 544 if ((mode < 0) || (mode >= AUDIO_MODE_CNT)) { 545 LOGW("Illegal value: setMode(%d)", mode); 546 return BAD_VALUE; 547 } 548 549 { // scope for the lock 550 AutoMutex lock(mHardwareLock); 551 mHardwareStatus = AUDIO_HW_SET_MODE; 552 ret = mPrimaryHardwareDev->set_mode(mPrimaryHardwareDev, mode); 553 mHardwareStatus = AUDIO_HW_IDLE; 554 } 555 556 if (NO_ERROR == ret) { 557 Mutex::Autolock _l(mLock); 558 mMode = mode; 559 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 560 mPlaybackThreads.valueAt(i)->setMode(mode); 561 } 562 563 return ret; 564} 565 566status_t AudioFlinger::setMicMute(bool state) 567{ 568 // check calling permissions 569 if (!settingsAllowed()) { 570 return PERMISSION_DENIED; 571 } 572 573 AutoMutex lock(mHardwareLock); 574 mHardwareStatus = AUDIO_HW_SET_MIC_MUTE; 575 status_t ret = mPrimaryHardwareDev->set_mic_mute(mPrimaryHardwareDev, state); 576 mHardwareStatus = AUDIO_HW_IDLE; 577 return ret; 578} 579 580bool AudioFlinger::getMicMute() const 581{ 582 bool state = AUDIO_MODE_INVALID; 583 mHardwareStatus = AUDIO_HW_GET_MIC_MUTE; 584 mPrimaryHardwareDev->get_mic_mute(mPrimaryHardwareDev, &state); 585 mHardwareStatus = AUDIO_HW_IDLE; 586 return state; 587} 588 589status_t AudioFlinger::setMasterMute(bool muted) 590{ 591 // check calling permissions 592 if (!settingsAllowed()) { 593 return PERMISSION_DENIED; 594 } 595 596 Mutex::Autolock _l(mLock); 597 mMasterMute = muted; 598 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 599 mPlaybackThreads.valueAt(i)->setMasterMute(muted); 600 601 return NO_ERROR; 602} 603 604float AudioFlinger::masterVolume() const 605{ 606 return mMasterVolume; 607} 608 609bool AudioFlinger::masterMute() const 610{ 611 return mMasterMute; 612} 613 614status_t AudioFlinger::setStreamVolume(int stream, float value, int output) 615{ 616 // check calling permissions 617 if (!settingsAllowed()) { 618 return PERMISSION_DENIED; 619 } 620 621 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT) { 622 return BAD_VALUE; 623 } 624 625 AutoMutex lock(mLock); 626 PlaybackThread *thread = NULL; 627 if (output) { 628 thread = checkPlaybackThread_l(output); 629 if (thread == NULL) { 630 return BAD_VALUE; 631 } 632 } 633 634 mStreamTypes[stream].volume = value; 635 636 if (thread == NULL) { 637 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) { 638 mPlaybackThreads.valueAt(i)->setStreamVolume(stream, value); 639 } 640 } else { 641 thread->setStreamVolume(stream, value); 642 } 643 644 return NO_ERROR; 645} 646 647status_t AudioFlinger::setStreamMute(int stream, bool muted) 648{ 649 // check calling permissions 650 if (!settingsAllowed()) { 651 return PERMISSION_DENIED; 652 } 653 654 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT || 655 uint32_t(stream) == AUDIO_STREAM_ENFORCED_AUDIBLE) { 656 return BAD_VALUE; 657 } 658 659 AutoMutex lock(mLock); 660 mStreamTypes[stream].mute = muted; 661 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 662 mPlaybackThreads.valueAt(i)->setStreamMute(stream, muted); 663 664 return NO_ERROR; 665} 666 667float AudioFlinger::streamVolume(int stream, int output) const 668{ 669 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT) { 670 return 0.0f; 671 } 672 673 AutoMutex lock(mLock); 674 float volume; 675 if (output) { 676 PlaybackThread *thread = checkPlaybackThread_l(output); 677 if (thread == NULL) { 678 return 0.0f; 679 } 680 volume = thread->streamVolume(stream); 681 } else { 682 volume = mStreamTypes[stream].volume; 683 } 684 685 return volume; 686} 687 688bool AudioFlinger::streamMute(int stream) const 689{ 690 if (stream < 0 || stream >= (int)AUDIO_STREAM_CNT) { 691 return true; 692 } 693 694 return mStreamTypes[stream].mute; 695} 696 697status_t AudioFlinger::setParameters(int ioHandle, const String8& keyValuePairs) 698{ 699 status_t result; 700 701 LOGV("setParameters(): io %d, keyvalue %s, tid %d, calling tid %d", 702 ioHandle, keyValuePairs.string(), gettid(), IPCThreadState::self()->getCallingPid()); 703 // check calling permissions 704 if (!settingsAllowed()) { 705 return PERMISSION_DENIED; 706 } 707 708 // ioHandle == 0 means the parameters are global to the audio hardware interface 709 if (ioHandle == 0) { 710 AutoMutex lock(mHardwareLock); 711 mHardwareStatus = AUDIO_SET_PARAMETER; 712 status_t final_result = NO_ERROR; 713 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 714 audio_hw_device_t *dev = mAudioHwDevs[i]; 715 result = dev->set_parameters(dev, keyValuePairs.string()); 716 final_result = result ?: final_result; 717 } 718 mHardwareStatus = AUDIO_HW_IDLE; 719 return final_result; 720 } 721 722 // hold a strong ref on thread in case closeOutput() or closeInput() is called 723 // and the thread is exited once the lock is released 724 sp<ThreadBase> thread; 725 { 726 Mutex::Autolock _l(mLock); 727 thread = checkPlaybackThread_l(ioHandle); 728 if (thread == NULL) { 729 thread = checkRecordThread_l(ioHandle); 730 } else if (thread.get() == primaryPlaybackThread_l()) { 731 // indicate output device change to all input threads for pre processing 732 AudioParameter param = AudioParameter(keyValuePairs); 733 int value; 734 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 735 for (size_t i = 0; i < mRecordThreads.size(); i++) { 736 mRecordThreads.valueAt(i)->setParameters(keyValuePairs); 737 } 738 } 739 } 740 } 741 if (thread != NULL) { 742 result = thread->setParameters(keyValuePairs); 743 return result; 744 } 745 return BAD_VALUE; 746} 747 748String8 AudioFlinger::getParameters(int ioHandle, const String8& keys) 749{ 750// LOGV("getParameters() io %d, keys %s, tid %d, calling tid %d", 751// ioHandle, keys.string(), gettid(), IPCThreadState::self()->getCallingPid()); 752 753 if (ioHandle == 0) { 754 String8 out_s8; 755 756 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 757 audio_hw_device_t *dev = mAudioHwDevs[i]; 758 char *s = dev->get_parameters(dev, keys.string()); 759 out_s8 += String8(s); 760 free(s); 761 } 762 return out_s8; 763 } 764 765 Mutex::Autolock _l(mLock); 766 767 PlaybackThread *playbackThread = checkPlaybackThread_l(ioHandle); 768 if (playbackThread != NULL) { 769 return playbackThread->getParameters(keys); 770 } 771 RecordThread *recordThread = checkRecordThread_l(ioHandle); 772 if (recordThread != NULL) { 773 return recordThread->getParameters(keys); 774 } 775 return String8(""); 776} 777 778size_t AudioFlinger::getInputBufferSize(uint32_t sampleRate, int format, int channelCount) 779{ 780 return mPrimaryHardwareDev->get_input_buffer_size(mPrimaryHardwareDev, sampleRate, format, channelCount); 781} 782 783unsigned int AudioFlinger::getInputFramesLost(int ioHandle) 784{ 785 if (ioHandle == 0) { 786 return 0; 787 } 788 789 Mutex::Autolock _l(mLock); 790 791 RecordThread *recordThread = checkRecordThread_l(ioHandle); 792 if (recordThread != NULL) { 793 return recordThread->getInputFramesLost(); 794 } 795 return 0; 796} 797 798status_t AudioFlinger::setVoiceVolume(float value) 799{ 800 // check calling permissions 801 if (!settingsAllowed()) { 802 return PERMISSION_DENIED; 803 } 804 805 AutoMutex lock(mHardwareLock); 806 mHardwareStatus = AUDIO_SET_VOICE_VOLUME; 807 status_t ret = mPrimaryHardwareDev->set_voice_volume(mPrimaryHardwareDev, value); 808 mHardwareStatus = AUDIO_HW_IDLE; 809 810 return ret; 811} 812 813status_t AudioFlinger::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output) 814{ 815 status_t status; 816 817 Mutex::Autolock _l(mLock); 818 819 PlaybackThread *playbackThread = checkPlaybackThread_l(output); 820 if (playbackThread != NULL) { 821 return playbackThread->getRenderPosition(halFrames, dspFrames); 822 } 823 824 return BAD_VALUE; 825} 826 827void AudioFlinger::registerClient(const sp<IAudioFlingerClient>& client) 828{ 829 830 Mutex::Autolock _l(mLock); 831 832 int pid = IPCThreadState::self()->getCallingPid(); 833 if (mNotificationClients.indexOfKey(pid) < 0) { 834 sp<NotificationClient> notificationClient = new NotificationClient(this, 835 client, 836 pid); 837 LOGV("registerClient() client %p, pid %d", notificationClient.get(), pid); 838 839 mNotificationClients.add(pid, notificationClient); 840 841 sp<IBinder> binder = client->asBinder(); 842 binder->linkToDeath(notificationClient); 843 844 // the config change is always sent from playback or record threads to avoid deadlock 845 // with AudioSystem::gLock 846 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 847 mPlaybackThreads.valueAt(i)->sendConfigEvent(AudioSystem::OUTPUT_OPENED); 848 } 849 850 for (size_t i = 0; i < mRecordThreads.size(); i++) { 851 mRecordThreads.valueAt(i)->sendConfigEvent(AudioSystem::INPUT_OPENED); 852 } 853 } 854} 855 856void AudioFlinger::removeNotificationClient(pid_t pid) 857{ 858 Mutex::Autolock _l(mLock); 859 860 int index = mNotificationClients.indexOfKey(pid); 861 if (index >= 0) { 862 sp <NotificationClient> client = mNotificationClients.valueFor(pid); 863 LOGV("removeNotificationClient() %p, pid %d", client.get(), pid); 864 mNotificationClients.removeItem(pid); 865 } 866} 867 868// audioConfigChanged_l() must be called with AudioFlinger::mLock held 869void AudioFlinger::audioConfigChanged_l(int event, int ioHandle, void *param2) 870{ 871 size_t size = mNotificationClients.size(); 872 for (size_t i = 0; i < size; i++) { 873 mNotificationClients.valueAt(i)->client()->ioConfigChanged(event, ioHandle, param2); 874 } 875} 876 877// removeClient_l() must be called with AudioFlinger::mLock held 878void AudioFlinger::removeClient_l(pid_t pid) 879{ 880 LOGV("removeClient_l() pid %d, tid %d, calling tid %d", pid, gettid(), IPCThreadState::self()->getCallingPid()); 881 mClients.removeItem(pid); 882} 883 884 885// ---------------------------------------------------------------------------- 886 887AudioFlinger::ThreadBase::ThreadBase(const sp<AudioFlinger>& audioFlinger, int id, uint32_t device) 888 : Thread(false), 889 mAudioFlinger(audioFlinger), mSampleRate(0), mFrameCount(0), mChannelCount(0), 890 mFrameSize(1), mFormat(0), mStandby(false), mId(id), mExiting(false), mDevice(device) 891{ 892} 893 894AudioFlinger::ThreadBase::~ThreadBase() 895{ 896 mParamCond.broadcast(); 897 mNewParameters.clear(); 898} 899 900void AudioFlinger::ThreadBase::exit() 901{ 902 // keep a strong ref on ourself so that we wont get 903 // destroyed in the middle of requestExitAndWait() 904 sp <ThreadBase> strongMe = this; 905 906 LOGV("ThreadBase::exit"); 907 { 908 AutoMutex lock(&mLock); 909 mExiting = true; 910 requestExit(); 911 mWaitWorkCV.signal(); 912 } 913 requestExitAndWait(); 914} 915 916uint32_t AudioFlinger::ThreadBase::sampleRate() const 917{ 918 return mSampleRate; 919} 920 921int AudioFlinger::ThreadBase::channelCount() const 922{ 923 return (int)mChannelCount; 924} 925 926uint32_t AudioFlinger::ThreadBase::format() const 927{ 928 return mFormat; 929} 930 931size_t AudioFlinger::ThreadBase::frameCount() const 932{ 933 return mFrameCount; 934} 935 936status_t AudioFlinger::ThreadBase::setParameters(const String8& keyValuePairs) 937{ 938 status_t status; 939 940 LOGV("ThreadBase::setParameters() %s", keyValuePairs.string()); 941 Mutex::Autolock _l(mLock); 942 943 mNewParameters.add(keyValuePairs); 944 mWaitWorkCV.signal(); 945 // wait condition with timeout in case the thread loop has exited 946 // before the request could be processed 947 if (mParamCond.waitRelative(mLock, seconds(2)) == NO_ERROR) { 948 status = mParamStatus; 949 mWaitWorkCV.signal(); 950 } else { 951 status = TIMED_OUT; 952 } 953 return status; 954} 955 956void AudioFlinger::ThreadBase::sendConfigEvent(int event, int param) 957{ 958 Mutex::Autolock _l(mLock); 959 sendConfigEvent_l(event, param); 960} 961 962// sendConfigEvent_l() must be called with ThreadBase::mLock held 963void AudioFlinger::ThreadBase::sendConfigEvent_l(int event, int param) 964{ 965 ConfigEvent *configEvent = new ConfigEvent(); 966 configEvent->mEvent = event; 967 configEvent->mParam = param; 968 mConfigEvents.add(configEvent); 969 LOGV("sendConfigEvent() num events %d event %d, param %d", mConfigEvents.size(), event, param); 970 mWaitWorkCV.signal(); 971} 972 973void AudioFlinger::ThreadBase::processConfigEvents() 974{ 975 mLock.lock(); 976 while(!mConfigEvents.isEmpty()) { 977 LOGV("processConfigEvents() remaining events %d", mConfigEvents.size()); 978 ConfigEvent *configEvent = mConfigEvents[0]; 979 mConfigEvents.removeAt(0); 980 // release mLock before locking AudioFlinger mLock: lock order is always 981 // AudioFlinger then ThreadBase to avoid cross deadlock 982 mLock.unlock(); 983 mAudioFlinger->mLock.lock(); 984 audioConfigChanged_l(configEvent->mEvent, configEvent->mParam); 985 mAudioFlinger->mLock.unlock(); 986 delete configEvent; 987 mLock.lock(); 988 } 989 mLock.unlock(); 990} 991 992status_t AudioFlinger::ThreadBase::dumpBase(int fd, const Vector<String16>& args) 993{ 994 const size_t SIZE = 256; 995 char buffer[SIZE]; 996 String8 result; 997 998 bool locked = tryLock(mLock); 999 if (!locked) { 1000 snprintf(buffer, SIZE, "thread %p maybe dead locked\n", this); 1001 write(fd, buffer, strlen(buffer)); 1002 } 1003 1004 snprintf(buffer, SIZE, "standby: %d\n", mStandby); 1005 result.append(buffer); 1006 snprintf(buffer, SIZE, "Sample rate: %d\n", mSampleRate); 1007 result.append(buffer); 1008 snprintf(buffer, SIZE, "Frame count: %d\n", mFrameCount); 1009 result.append(buffer); 1010 snprintf(buffer, SIZE, "Channel Count: %d\n", mChannelCount); 1011 result.append(buffer); 1012 snprintf(buffer, SIZE, "Channel Mask: 0x%08x\n", mChannelMask); 1013 result.append(buffer); 1014 snprintf(buffer, SIZE, "Format: %d\n", mFormat); 1015 result.append(buffer); 1016 snprintf(buffer, SIZE, "Frame size: %d\n", mFrameSize); 1017 result.append(buffer); 1018 1019 snprintf(buffer, SIZE, "\nPending setParameters commands: \n"); 1020 result.append(buffer); 1021 result.append(" Index Command"); 1022 for (size_t i = 0; i < mNewParameters.size(); ++i) { 1023 snprintf(buffer, SIZE, "\n %02d ", i); 1024 result.append(buffer); 1025 result.append(mNewParameters[i]); 1026 } 1027 1028 snprintf(buffer, SIZE, "\n\nPending config events: \n"); 1029 result.append(buffer); 1030 snprintf(buffer, SIZE, " Index event param\n"); 1031 result.append(buffer); 1032 for (size_t i = 0; i < mConfigEvents.size(); i++) { 1033 snprintf(buffer, SIZE, " %02d %02d %d\n", i, mConfigEvents[i]->mEvent, mConfigEvents[i]->mParam); 1034 result.append(buffer); 1035 } 1036 result.append("\n"); 1037 1038 write(fd, result.string(), result.size()); 1039 1040 if (locked) { 1041 mLock.unlock(); 1042 } 1043 return NO_ERROR; 1044} 1045 1046// ---------------------------------------------------------------------------- 1047 1048AudioFlinger::PlaybackThread::PlaybackThread(const sp<AudioFlinger>& audioFlinger, 1049 AudioStreamOut* output, 1050 int id, 1051 uint32_t device) 1052 : ThreadBase(audioFlinger, id, device), 1053 mMixBuffer(0), mSuspended(0), mBytesWritten(0), mOutput(output), 1054 mLastWriteTime(0), mNumWrites(0), mNumDelayedWrites(0), mInWrite(false) 1055{ 1056 readOutputParameters(); 1057 1058 mMasterVolume = mAudioFlinger->masterVolume(); 1059 mMasterMute = mAudioFlinger->masterMute(); 1060 1061 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 1062 mStreamTypes[stream].volume = mAudioFlinger->streamVolumeInternal(stream); 1063 mStreamTypes[stream].mute = mAudioFlinger->streamMute(stream); 1064 } 1065} 1066 1067AudioFlinger::PlaybackThread::~PlaybackThread() 1068{ 1069 delete [] mMixBuffer; 1070} 1071 1072status_t AudioFlinger::PlaybackThread::dump(int fd, const Vector<String16>& args) 1073{ 1074 dumpInternals(fd, args); 1075 dumpTracks(fd, args); 1076 dumpEffectChains(fd, args); 1077 return NO_ERROR; 1078} 1079 1080status_t AudioFlinger::PlaybackThread::dumpTracks(int fd, const Vector<String16>& args) 1081{ 1082 const size_t SIZE = 256; 1083 char buffer[SIZE]; 1084 String8 result; 1085 1086 snprintf(buffer, SIZE, "Output thread %p tracks\n", this); 1087 result.append(buffer); 1088 result.append(" Name Clien Typ Fmt Chn mask Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 1089 for (size_t i = 0; i < mTracks.size(); ++i) { 1090 sp<Track> track = mTracks[i]; 1091 if (track != 0) { 1092 track->dump(buffer, SIZE); 1093 result.append(buffer); 1094 } 1095 } 1096 1097 snprintf(buffer, SIZE, "Output thread %p active tracks\n", this); 1098 result.append(buffer); 1099 result.append(" Name Clien Typ Fmt Chn mask Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 1100 for (size_t i = 0; i < mActiveTracks.size(); ++i) { 1101 wp<Track> wTrack = mActiveTracks[i]; 1102 if (wTrack != 0) { 1103 sp<Track> track = wTrack.promote(); 1104 if (track != 0) { 1105 track->dump(buffer, SIZE); 1106 result.append(buffer); 1107 } 1108 } 1109 } 1110 write(fd, result.string(), result.size()); 1111 return NO_ERROR; 1112} 1113 1114status_t AudioFlinger::PlaybackThread::dumpEffectChains(int fd, const Vector<String16>& args) 1115{ 1116 const size_t SIZE = 256; 1117 char buffer[SIZE]; 1118 String8 result; 1119 1120 snprintf(buffer, SIZE, "\n- %d Effect Chains:\n", mEffectChains.size()); 1121 write(fd, buffer, strlen(buffer)); 1122 1123 for (size_t i = 0; i < mEffectChains.size(); ++i) { 1124 sp<EffectChain> chain = mEffectChains[i]; 1125 if (chain != 0) { 1126 chain->dump(fd, args); 1127 } 1128 } 1129 return NO_ERROR; 1130} 1131 1132status_t AudioFlinger::PlaybackThread::dumpInternals(int fd, const Vector<String16>& args) 1133{ 1134 const size_t SIZE = 256; 1135 char buffer[SIZE]; 1136 String8 result; 1137 1138 snprintf(buffer, SIZE, "\nOutput thread %p internals\n", this); 1139 result.append(buffer); 1140 snprintf(buffer, SIZE, "last write occurred (msecs): %llu\n", ns2ms(systemTime() - mLastWriteTime)); 1141 result.append(buffer); 1142 snprintf(buffer, SIZE, "total writes: %d\n", mNumWrites); 1143 result.append(buffer); 1144 snprintf(buffer, SIZE, "delayed writes: %d\n", mNumDelayedWrites); 1145 result.append(buffer); 1146 snprintf(buffer, SIZE, "blocked in write: %d\n", mInWrite); 1147 result.append(buffer); 1148 snprintf(buffer, SIZE, "suspend count: %d\n", mSuspended); 1149 result.append(buffer); 1150 snprintf(buffer, SIZE, "mix buffer : %p\n", mMixBuffer); 1151 result.append(buffer); 1152 write(fd, result.string(), result.size()); 1153 1154 dumpBase(fd, args); 1155 1156 return NO_ERROR; 1157} 1158 1159// Thread virtuals 1160status_t AudioFlinger::PlaybackThread::readyToRun() 1161{ 1162 if (mSampleRate == 0) { 1163 LOGE("No working audio driver found."); 1164 return NO_INIT; 1165 } 1166 LOGI("AudioFlinger's thread %p ready to run", this); 1167 return NO_ERROR; 1168} 1169 1170void AudioFlinger::PlaybackThread::onFirstRef() 1171{ 1172 const size_t SIZE = 256; 1173 char buffer[SIZE]; 1174 1175 snprintf(buffer, SIZE, "Playback Thread %p", this); 1176 1177 run(buffer, ANDROID_PRIORITY_URGENT_AUDIO); 1178} 1179 1180// PlaybackThread::createTrack_l() must be called with AudioFlinger::mLock held 1181sp<AudioFlinger::PlaybackThread::Track> AudioFlinger::PlaybackThread::createTrack_l( 1182 const sp<AudioFlinger::Client>& client, 1183 int streamType, 1184 uint32_t sampleRate, 1185 uint32_t format, 1186 uint32_t channelMask, 1187 int frameCount, 1188 const sp<IMemory>& sharedBuffer, 1189 int sessionId, 1190 status_t *status) 1191{ 1192 sp<Track> track; 1193 status_t lStatus; 1194 1195 if (mType == DIRECT) { 1196 if ((format & AUDIO_FORMAT_MAIN_MASK) == AUDIO_FORMAT_PCM) { 1197 if (sampleRate != mSampleRate || format != mFormat || channelMask != mChannelMask) { 1198 LOGE("createTrack_l() Bad parameter: sampleRate %d format %d, channelMask 0x%08x \"" 1199 "for output %p with format %d", 1200 sampleRate, format, channelMask, mOutput, mFormat); 1201 lStatus = BAD_VALUE; 1202 goto Exit; 1203 } 1204 } 1205 } else { 1206 // Resampler implementation limits input sampling rate to 2 x output sampling rate. 1207 if (sampleRate > mSampleRate*2) { 1208 LOGE("Sample rate out of range: %d mSampleRate %d", sampleRate, mSampleRate); 1209 lStatus = BAD_VALUE; 1210 goto Exit; 1211 } 1212 } 1213 1214 lStatus = initCheck(); 1215 if (lStatus != NO_ERROR) { 1216 LOGE("Audio driver not initialized."); 1217 goto Exit; 1218 } 1219 1220 { // scope for mLock 1221 Mutex::Autolock _l(mLock); 1222 1223 // all tracks in same audio session must share the same routing strategy otherwise 1224 // conflicts will happen when tracks are moved from one output to another by audio policy 1225 // manager 1226 uint32_t strategy = 1227 AudioSystem::getStrategyForStream((audio_stream_type_t)streamType); 1228 for (size_t i = 0; i < mTracks.size(); ++i) { 1229 sp<Track> t = mTracks[i]; 1230 if (t != 0) { 1231 if (sessionId == t->sessionId() && 1232 strategy != AudioSystem::getStrategyForStream((audio_stream_type_t)t->type())) { 1233 lStatus = BAD_VALUE; 1234 goto Exit; 1235 } 1236 } 1237 } 1238 1239 track = new Track(this, client, streamType, sampleRate, format, 1240 channelMask, frameCount, sharedBuffer, sessionId); 1241 if (track->getCblk() == NULL || track->name() < 0) { 1242 lStatus = NO_MEMORY; 1243 goto Exit; 1244 } 1245 mTracks.add(track); 1246 1247 sp<EffectChain> chain = getEffectChain_l(sessionId); 1248 if (chain != 0) { 1249 LOGV("createTrack_l() setting main buffer %p", chain->inBuffer()); 1250 track->setMainBuffer(chain->inBuffer()); 1251 chain->setStrategy(AudioSystem::getStrategyForStream((audio_stream_type_t)track->type())); 1252 chain->incTrackCnt(); 1253 } 1254 } 1255 lStatus = NO_ERROR; 1256 1257Exit: 1258 if(status) { 1259 *status = lStatus; 1260 } 1261 return track; 1262} 1263 1264uint32_t AudioFlinger::PlaybackThread::latency() const 1265{ 1266 if (mOutput) { 1267 return mOutput->stream->get_latency(mOutput->stream); 1268 } 1269 else { 1270 return 0; 1271 } 1272} 1273 1274status_t AudioFlinger::PlaybackThread::setMasterVolume(float value) 1275{ 1276 mMasterVolume = value; 1277 return NO_ERROR; 1278} 1279 1280status_t AudioFlinger::PlaybackThread::setMasterMute(bool muted) 1281{ 1282 mMasterMute = muted; 1283 return NO_ERROR; 1284} 1285 1286float AudioFlinger::PlaybackThread::masterVolume() const 1287{ 1288 return mMasterVolume; 1289} 1290 1291bool AudioFlinger::PlaybackThread::masterMute() const 1292{ 1293 return mMasterMute; 1294} 1295 1296status_t AudioFlinger::PlaybackThread::setStreamVolume(int stream, float value) 1297{ 1298 mStreamTypes[stream].volume = value; 1299 return NO_ERROR; 1300} 1301 1302status_t AudioFlinger::PlaybackThread::setStreamMute(int stream, bool muted) 1303{ 1304 mStreamTypes[stream].mute = muted; 1305 return NO_ERROR; 1306} 1307 1308float AudioFlinger::PlaybackThread::streamVolume(int stream) const 1309{ 1310 return mStreamTypes[stream].volume; 1311} 1312 1313bool AudioFlinger::PlaybackThread::streamMute(int stream) const 1314{ 1315 return mStreamTypes[stream].mute; 1316} 1317 1318// addTrack_l() must be called with ThreadBase::mLock held 1319status_t AudioFlinger::PlaybackThread::addTrack_l(const sp<Track>& track) 1320{ 1321 status_t status = ALREADY_EXISTS; 1322 1323 // set retry count for buffer fill 1324 track->mRetryCount = kMaxTrackStartupRetries; 1325 if (mActiveTracks.indexOf(track) < 0) { 1326 // the track is newly added, make sure it fills up all its 1327 // buffers before playing. This is to ensure the client will 1328 // effectively get the latency it requested. 1329 track->mFillingUpStatus = Track::FS_FILLING; 1330 track->mResetDone = false; 1331 mActiveTracks.add(track); 1332 if (track->mainBuffer() != mMixBuffer) { 1333 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1334 if (chain != 0) { 1335 LOGV("addTrack_l() starting track on chain %p for session %d", chain.get(), track->sessionId()); 1336 chain->incActiveTrackCnt(); 1337 } 1338 } 1339 1340 status = NO_ERROR; 1341 } 1342 1343 LOGV("mWaitWorkCV.broadcast"); 1344 mWaitWorkCV.broadcast(); 1345 1346 return status; 1347} 1348 1349// destroyTrack_l() must be called with ThreadBase::mLock held 1350void AudioFlinger::PlaybackThread::destroyTrack_l(const sp<Track>& track) 1351{ 1352 track->mState = TrackBase::TERMINATED; 1353 if (mActiveTracks.indexOf(track) < 0) { 1354 removeTrack_l(track); 1355 } 1356} 1357 1358void AudioFlinger::PlaybackThread::removeTrack_l(const sp<Track>& track) 1359{ 1360 mTracks.remove(track); 1361 deleteTrackName_l(track->name()); 1362 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1363 if (chain != 0) { 1364 chain->decTrackCnt(); 1365 } 1366} 1367 1368String8 AudioFlinger::PlaybackThread::getParameters(const String8& keys) 1369{ 1370 String8 out_s8; 1371 char *s; 1372 1373 s = mOutput->stream->common.get_parameters(&mOutput->stream->common, keys.string()); 1374 out_s8 = String8(s); 1375 free(s); 1376 return out_s8; 1377} 1378 1379// destroyTrack_l() must be called with AudioFlinger::mLock held 1380void AudioFlinger::PlaybackThread::audioConfigChanged_l(int event, int param) { 1381 AudioSystem::OutputDescriptor desc; 1382 void *param2 = 0; 1383 1384 LOGV("PlaybackThread::audioConfigChanged_l, thread %p, event %d, param %d", this, event, param); 1385 1386 switch (event) { 1387 case AudioSystem::OUTPUT_OPENED: 1388 case AudioSystem::OUTPUT_CONFIG_CHANGED: 1389 desc.channels = mChannelMask; 1390 desc.samplingRate = mSampleRate; 1391 desc.format = mFormat; 1392 desc.frameCount = mFrameCount; 1393 desc.latency = latency(); 1394 param2 = &desc; 1395 break; 1396 1397 case AudioSystem::STREAM_CONFIG_CHANGED: 1398 param2 = ¶m; 1399 case AudioSystem::OUTPUT_CLOSED: 1400 default: 1401 break; 1402 } 1403 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 1404} 1405 1406void AudioFlinger::PlaybackThread::readOutputParameters() 1407{ 1408 mSampleRate = mOutput->stream->common.get_sample_rate(&mOutput->stream->common); 1409 mChannelMask = mOutput->stream->common.get_channels(&mOutput->stream->common); 1410 mChannelCount = (uint16_t)popcount(mChannelMask); 1411 mFormat = mOutput->stream->common.get_format(&mOutput->stream->common); 1412 mFrameSize = (uint16_t)audio_stream_frame_size(&mOutput->stream->common); 1413 mFrameCount = mOutput->stream->common.get_buffer_size(&mOutput->stream->common) / mFrameSize; 1414 1415 // FIXME - Current mixer implementation only supports stereo output: Always 1416 // Allocate a stereo buffer even if HW output is mono. 1417 if (mMixBuffer != NULL) delete[] mMixBuffer; 1418 mMixBuffer = new int16_t[mFrameCount * 2]; 1419 memset(mMixBuffer, 0, mFrameCount * 2 * sizeof(int16_t)); 1420 1421 // force reconfiguration of effect chains and engines to take new buffer size and audio 1422 // parameters into account 1423 // Note that mLock is not held when readOutputParameters() is called from the constructor 1424 // but in this case nothing is done below as no audio sessions have effect yet so it doesn't 1425 // matter. 1426 // create a copy of mEffectChains as calling moveEffectChain_l() can reorder some effect chains 1427 Vector< sp<EffectChain> > effectChains = mEffectChains; 1428 for (size_t i = 0; i < effectChains.size(); i ++) { 1429 mAudioFlinger->moveEffectChain_l(effectChains[i]->sessionId(), this, this, false); 1430 } 1431} 1432 1433status_t AudioFlinger::PlaybackThread::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames) 1434{ 1435 if (halFrames == 0 || dspFrames == 0) { 1436 return BAD_VALUE; 1437 } 1438 if (initCheck() != NO_ERROR) { 1439 return INVALID_OPERATION; 1440 } 1441 *halFrames = mBytesWritten / audio_stream_frame_size(&mOutput->stream->common); 1442 1443 return mOutput->stream->get_render_position(mOutput->stream, dspFrames); 1444} 1445 1446uint32_t AudioFlinger::PlaybackThread::hasAudioSession(int sessionId) 1447{ 1448 Mutex::Autolock _l(mLock); 1449 uint32_t result = 0; 1450 if (getEffectChain_l(sessionId) != 0) { 1451 result = EFFECT_SESSION; 1452 } 1453 1454 for (size_t i = 0; i < mTracks.size(); ++i) { 1455 sp<Track> track = mTracks[i]; 1456 if (sessionId == track->sessionId() && 1457 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1458 result |= TRACK_SESSION; 1459 break; 1460 } 1461 } 1462 1463 return result; 1464} 1465 1466uint32_t AudioFlinger::PlaybackThread::getStrategyForSession_l(int sessionId) 1467{ 1468 // session AUDIO_SESSION_OUTPUT_MIX is placed in same strategy as MUSIC stream so that 1469 // it is moved to correct output by audio policy manager when A2DP is connected or disconnected 1470 if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 1471 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1472 } 1473 for (size_t i = 0; i < mTracks.size(); i++) { 1474 sp<Track> track = mTracks[i]; 1475 if (sessionId == track->sessionId() && 1476 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1477 return AudioSystem::getStrategyForStream((audio_stream_type_t) track->type()); 1478 } 1479 } 1480 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1481} 1482 1483 1484// ---------------------------------------------------------------------------- 1485 1486AudioFlinger::MixerThread::MixerThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 1487 : PlaybackThread(audioFlinger, output, id, device), 1488 mAudioMixer(0) 1489{ 1490 mType = ThreadBase::MIXER; 1491 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 1492 1493 // FIXME - Current mixer implementation only supports stereo output 1494 if (mChannelCount == 1) { 1495 LOGE("Invalid audio hardware channel count"); 1496 } 1497} 1498 1499AudioFlinger::MixerThread::~MixerThread() 1500{ 1501 delete mAudioMixer; 1502} 1503 1504bool AudioFlinger::MixerThread::threadLoop() 1505{ 1506 Vector< sp<Track> > tracksToRemove; 1507 uint32_t mixerStatus = MIXER_IDLE; 1508 nsecs_t standbyTime = systemTime(); 1509 size_t mixBufferSize = mFrameCount * mFrameSize; 1510 // FIXME: Relaxed timing because of a certain device that can't meet latency 1511 // Should be reduced to 2x after the vendor fixes the driver issue 1512 nsecs_t maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1513 nsecs_t lastWarning = 0; 1514 bool longStandbyExit = false; 1515 uint32_t activeSleepTime = activeSleepTimeUs(); 1516 uint32_t idleSleepTime = idleSleepTimeUs(); 1517 uint32_t sleepTime = idleSleepTime; 1518 Vector< sp<EffectChain> > effectChains; 1519#ifdef DEBUG_CPU_USAGE 1520 ThreadCpuUsage cpu; 1521 const CentralTendencyStatistics& stats = cpu.statistics(); 1522#endif 1523 1524 while (!exitPending()) 1525 { 1526#ifdef DEBUG_CPU_USAGE 1527 cpu.sampleAndEnable(); 1528 unsigned n = stats.n(); 1529 // cpu.elapsed() is expensive, so don't call it every loop 1530 if ((n & 127) == 1) { 1531 long long elapsed = cpu.elapsed(); 1532 if (elapsed >= DEBUG_CPU_USAGE * 1000000000LL) { 1533 double perLoop = elapsed / (double) n; 1534 double perLoop100 = perLoop * 0.01; 1535 double mean = stats.mean(); 1536 double stddev = stats.stddev(); 1537 double minimum = stats.minimum(); 1538 double maximum = stats.maximum(); 1539 cpu.resetStatistics(); 1540 LOGI("CPU usage over past %.1f secs (%u mixer loops at %.1f mean ms per loop):\n us per mix loop: mean=%.0f stddev=%.0f min=%.0f max=%.0f\n %% of wall: mean=%.1f stddev=%.1f min=%.1f max=%.1f", 1541 elapsed * .000000001, n, perLoop * .000001, 1542 mean * .001, 1543 stddev * .001, 1544 minimum * .001, 1545 maximum * .001, 1546 mean / perLoop100, 1547 stddev / perLoop100, 1548 minimum / perLoop100, 1549 maximum / perLoop100); 1550 } 1551 } 1552#endif 1553 processConfigEvents(); 1554 1555 mixerStatus = MIXER_IDLE; 1556 { // scope for mLock 1557 1558 Mutex::Autolock _l(mLock); 1559 1560 if (checkForNewParameters_l()) { 1561 mixBufferSize = mFrameCount * mFrameSize; 1562 // FIXME: Relaxed timing because of a certain device that can't meet latency 1563 // Should be reduced to 2x after the vendor fixes the driver issue 1564 maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1565 activeSleepTime = activeSleepTimeUs(); 1566 idleSleepTime = idleSleepTimeUs(); 1567 } 1568 1569 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 1570 1571 // put audio hardware into standby after short delay 1572 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 1573 mSuspended) { 1574 if (!mStandby) { 1575 LOGV("Audio hardware entering standby, mixer %p, mSuspended %d\n", this, mSuspended); 1576 mOutput->stream->common.standby(&mOutput->stream->common); 1577 mStandby = true; 1578 mBytesWritten = 0; 1579 } 1580 1581 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 1582 // we're about to wait, flush the binder command buffer 1583 IPCThreadState::self()->flushCommands(); 1584 1585 if (exitPending()) break; 1586 1587 // wait until we have something to do... 1588 LOGV("MixerThread %p TID %d going to sleep\n", this, gettid()); 1589 mWaitWorkCV.wait(mLock); 1590 LOGV("MixerThread %p TID %d waking up\n", this, gettid()); 1591 1592 if (mMasterMute == false) { 1593 char value[PROPERTY_VALUE_MAX]; 1594 property_get("ro.audio.silent", value, "0"); 1595 if (atoi(value)) { 1596 LOGD("Silence is golden"); 1597 setMasterMute(true); 1598 } 1599 } 1600 1601 standbyTime = systemTime() + kStandbyTimeInNsecs; 1602 sleepTime = idleSleepTime; 1603 continue; 1604 } 1605 } 1606 1607 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 1608 1609 // prevent any changes in effect chain list and in each effect chain 1610 // during mixing and effect process as the audio buffers could be deleted 1611 // or modified if an effect is created or deleted 1612 lockEffectChains_l(effectChains); 1613 } 1614 1615 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 1616 // mix buffers... 1617 mAudioMixer->process(); 1618 sleepTime = 0; 1619 standbyTime = systemTime() + kStandbyTimeInNsecs; 1620 //TODO: delay standby when effects have a tail 1621 } else { 1622 // If no tracks are ready, sleep once for the duration of an output 1623 // buffer size, then write 0s to the output 1624 if (sleepTime == 0) { 1625 if (mixerStatus == MIXER_TRACKS_ENABLED) { 1626 sleepTime = activeSleepTime; 1627 } else { 1628 sleepTime = idleSleepTime; 1629 } 1630 } else if (mBytesWritten != 0 || 1631 (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)) { 1632 memset (mMixBuffer, 0, mixBufferSize); 1633 sleepTime = 0; 1634 LOGV_IF((mBytesWritten == 0 && (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)), "anticipated start"); 1635 } 1636 // TODO add standby time extension fct of effect tail 1637 } 1638 1639 if (mSuspended) { 1640 sleepTime = suspendSleepTimeUs(); 1641 } 1642 // sleepTime == 0 means we must write to audio hardware 1643 if (sleepTime == 0) { 1644 for (size_t i = 0; i < effectChains.size(); i ++) { 1645 effectChains[i]->process_l(); 1646 } 1647 // enable changes in effect chain 1648 unlockEffectChains(effectChains); 1649 mLastWriteTime = systemTime(); 1650 mInWrite = true; 1651 mBytesWritten += mixBufferSize; 1652 1653 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 1654 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 1655 mNumWrites++; 1656 mInWrite = false; 1657 nsecs_t now = systemTime(); 1658 nsecs_t delta = now - mLastWriteTime; 1659 if (delta > maxPeriod) { 1660 mNumDelayedWrites++; 1661 if ((now - lastWarning) > kWarningThrottle) { 1662 LOGW("write blocked for %llu msecs, %d delayed writes, thread %p", 1663 ns2ms(delta), mNumDelayedWrites, this); 1664 lastWarning = now; 1665 } 1666 if (mStandby) { 1667 longStandbyExit = true; 1668 } 1669 } 1670 mStandby = false; 1671 } else { 1672 // enable changes in effect chain 1673 unlockEffectChains(effectChains); 1674 usleep(sleepTime); 1675 } 1676 1677 // finally let go of all our tracks, without the lock held 1678 // since we can't guarantee the destructors won't acquire that 1679 // same lock. 1680 tracksToRemove.clear(); 1681 1682 // Effect chains will be actually deleted here if they were removed from 1683 // mEffectChains list during mixing or effects processing 1684 effectChains.clear(); 1685 } 1686 1687 if (!mStandby) { 1688 mOutput->stream->common.standby(&mOutput->stream->common); 1689 } 1690 1691 LOGV("MixerThread %p exiting", this); 1692 return false; 1693} 1694 1695// prepareTracks_l() must be called with ThreadBase::mLock held 1696uint32_t AudioFlinger::MixerThread::prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, Vector< sp<Track> > *tracksToRemove) 1697{ 1698 1699 uint32_t mixerStatus = MIXER_IDLE; 1700 // find out which tracks need to be processed 1701 size_t count = activeTracks.size(); 1702 size_t mixedTracks = 0; 1703 size_t tracksWithEffect = 0; 1704 1705 float masterVolume = mMasterVolume; 1706 bool masterMute = mMasterMute; 1707 1708 if (masterMute) { 1709 masterVolume = 0; 1710 } 1711 // Delegate master volume control to effect in output mix effect chain if needed 1712 sp<EffectChain> chain = getEffectChain_l(AUDIO_SESSION_OUTPUT_MIX); 1713 if (chain != 0) { 1714 uint32_t v = (uint32_t)(masterVolume * (1 << 24)); 1715 chain->setVolume_l(&v, &v); 1716 masterVolume = (float)((v + (1 << 23)) >> 24); 1717 chain.clear(); 1718 } 1719 1720 for (size_t i=0 ; i<count ; i++) { 1721 sp<Track> t = activeTracks[i].promote(); 1722 if (t == 0) continue; 1723 1724 Track* const track = t.get(); 1725 audio_track_cblk_t* cblk = track->cblk(); 1726 1727 // The first time a track is added we wait 1728 // for all its buffers to be filled before processing it 1729 mAudioMixer->setActiveTrack(track->name()); 1730 if (cblk->framesReady() && track->isReady() && 1731 !track->isPaused() && !track->isTerminated()) 1732 { 1733 //LOGV("track %d u=%08x, s=%08x [OK] on thread %p", track->name(), cblk->user, cblk->server, this); 1734 1735 mixedTracks++; 1736 1737 // track->mainBuffer() != mMixBuffer means there is an effect chain 1738 // connected to the track 1739 chain.clear(); 1740 if (track->mainBuffer() != mMixBuffer) { 1741 chain = getEffectChain_l(track->sessionId()); 1742 // Delegate volume control to effect in track effect chain if needed 1743 if (chain != 0) { 1744 tracksWithEffect++; 1745 } else { 1746 LOGW("prepareTracks_l(): track %08x attached to effect but no chain found on session %d", 1747 track->name(), track->sessionId()); 1748 } 1749 } 1750 1751 1752 int param = AudioMixer::VOLUME; 1753 if (track->mFillingUpStatus == Track::FS_FILLED) { 1754 // no ramp for the first volume setting 1755 track->mFillingUpStatus = Track::FS_ACTIVE; 1756 if (track->mState == TrackBase::RESUMING) { 1757 track->mState = TrackBase::ACTIVE; 1758 param = AudioMixer::RAMP_VOLUME; 1759 } 1760 mAudioMixer->setParameter(AudioMixer::RESAMPLE, AudioMixer::RESET, NULL); 1761 } else if (cblk->server != 0) { 1762 // If the track is stopped before the first frame was mixed, 1763 // do not apply ramp 1764 param = AudioMixer::RAMP_VOLUME; 1765 } 1766 1767 // compute volume for this track 1768 uint32_t vl, vr, va; 1769 if (track->isMuted() || track->isPausing() || 1770 mStreamTypes[track->type()].mute) { 1771 vl = vr = va = 0; 1772 if (track->isPausing()) { 1773 track->setPaused(); 1774 } 1775 } else { 1776 1777 // read original volumes with volume control 1778 float typeVolume = mStreamTypes[track->type()].volume; 1779 float v = masterVolume * typeVolume; 1780 vl = (uint32_t)(v * cblk->volume[0]) << 12; 1781 vr = (uint32_t)(v * cblk->volume[1]) << 12; 1782 1783 va = (uint32_t)(v * cblk->sendLevel); 1784 } 1785 // Delegate volume control to effect in track effect chain if needed 1786 if (chain != 0 && chain->setVolume_l(&vl, &vr)) { 1787 // Do not ramp volume if volume is controlled by effect 1788 param = AudioMixer::VOLUME; 1789 track->mHasVolumeController = true; 1790 } else { 1791 // force no volume ramp when volume controller was just disabled or removed 1792 // from effect chain to avoid volume spike 1793 if (track->mHasVolumeController) { 1794 param = AudioMixer::VOLUME; 1795 } 1796 track->mHasVolumeController = false; 1797 } 1798 1799 // Convert volumes from 8.24 to 4.12 format 1800 int16_t left, right, aux; 1801 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 1802 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 1803 left = int16_t(v_clamped); 1804 v_clamped = (vr + (1 << 11)) >> 12; 1805 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 1806 right = int16_t(v_clamped); 1807 1808 if (va > MAX_GAIN_INT) va = MAX_GAIN_INT; 1809 aux = int16_t(va); 1810 1811 // XXX: these things DON'T need to be done each time 1812 mAudioMixer->setBufferProvider(track); 1813 mAudioMixer->enable(AudioMixer::MIXING); 1814 1815 mAudioMixer->setParameter(param, AudioMixer::VOLUME0, (void *)left); 1816 mAudioMixer->setParameter(param, AudioMixer::VOLUME1, (void *)right); 1817 mAudioMixer->setParameter(param, AudioMixer::AUXLEVEL, (void *)aux); 1818 mAudioMixer->setParameter( 1819 AudioMixer::TRACK, 1820 AudioMixer::FORMAT, (void *)track->format()); 1821 mAudioMixer->setParameter( 1822 AudioMixer::TRACK, 1823 AudioMixer::CHANNEL_MASK, (void *)track->channelMask()); 1824 mAudioMixer->setParameter( 1825 AudioMixer::RESAMPLE, 1826 AudioMixer::SAMPLE_RATE, 1827 (void *)(cblk->sampleRate)); 1828 mAudioMixer->setParameter( 1829 AudioMixer::TRACK, 1830 AudioMixer::MAIN_BUFFER, (void *)track->mainBuffer()); 1831 mAudioMixer->setParameter( 1832 AudioMixer::TRACK, 1833 AudioMixer::AUX_BUFFER, (void *)track->auxBuffer()); 1834 1835 // reset retry count 1836 track->mRetryCount = kMaxTrackRetries; 1837 mixerStatus = MIXER_TRACKS_READY; 1838 } else { 1839 //LOGV("track %d u=%08x, s=%08x [NOT READY] on thread %p", track->name(), cblk->user, cblk->server, this); 1840 if (track->isStopped()) { 1841 track->reset(); 1842 } 1843 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 1844 // We have consumed all the buffers of this track. 1845 // Remove it from the list of active tracks. 1846 tracksToRemove->add(track); 1847 } else { 1848 // No buffers for this track. Give it a few chances to 1849 // fill a buffer, then remove it from active list. 1850 if (--(track->mRetryCount) <= 0) { 1851 LOGV("BUFFER TIMEOUT: remove(%d) from active list on thread %p", track->name(), this); 1852 tracksToRemove->add(track); 1853 // indicate to client process that the track was disabled because of underrun 1854 android_atomic_or(CBLK_DISABLED_ON, &cblk->flags); 1855 } else if (mixerStatus != MIXER_TRACKS_READY) { 1856 mixerStatus = MIXER_TRACKS_ENABLED; 1857 } 1858 } 1859 mAudioMixer->disable(AudioMixer::MIXING); 1860 } 1861 } 1862 1863 // remove all the tracks that need to be... 1864 count = tracksToRemove->size(); 1865 if (UNLIKELY(count)) { 1866 for (size_t i=0 ; i<count ; i++) { 1867 const sp<Track>& track = tracksToRemove->itemAt(i); 1868 mActiveTracks.remove(track); 1869 if (track->mainBuffer() != mMixBuffer) { 1870 chain = getEffectChain_l(track->sessionId()); 1871 if (chain != 0) { 1872 LOGV("stopping track on chain %p for session Id: %d", chain.get(), track->sessionId()); 1873 chain->decActiveTrackCnt(); 1874 } 1875 } 1876 if (track->isTerminated()) { 1877 removeTrack_l(track); 1878 } 1879 } 1880 } 1881 1882 // mix buffer must be cleared if all tracks are connected to an 1883 // effect chain as in this case the mixer will not write to 1884 // mix buffer and track effects will accumulate into it 1885 if (mixedTracks != 0 && mixedTracks == tracksWithEffect) { 1886 memset(mMixBuffer, 0, mFrameCount * mChannelCount * sizeof(int16_t)); 1887 } 1888 1889 return mixerStatus; 1890} 1891 1892void AudioFlinger::MixerThread::invalidateTracks(int streamType) 1893{ 1894 LOGV ("MixerThread::invalidateTracks() mixer %p, streamType %d, mTracks.size %d", 1895 this, streamType, mTracks.size()); 1896 Mutex::Autolock _l(mLock); 1897 1898 size_t size = mTracks.size(); 1899 for (size_t i = 0; i < size; i++) { 1900 sp<Track> t = mTracks[i]; 1901 if (t->type() == streamType) { 1902 android_atomic_or(CBLK_INVALID_ON, &t->mCblk->flags); 1903 t->mCblk->cv.signal(); 1904 } 1905 } 1906} 1907 1908 1909// getTrackName_l() must be called with ThreadBase::mLock held 1910int AudioFlinger::MixerThread::getTrackName_l() 1911{ 1912 return mAudioMixer->getTrackName(); 1913} 1914 1915// deleteTrackName_l() must be called with ThreadBase::mLock held 1916void AudioFlinger::MixerThread::deleteTrackName_l(int name) 1917{ 1918 LOGV("remove track (%d) and delete from mixer", name); 1919 mAudioMixer->deleteTrackName(name); 1920} 1921 1922// checkForNewParameters_l() must be called with ThreadBase::mLock held 1923bool AudioFlinger::MixerThread::checkForNewParameters_l() 1924{ 1925 bool reconfig = false; 1926 1927 while (!mNewParameters.isEmpty()) { 1928 status_t status = NO_ERROR; 1929 String8 keyValuePair = mNewParameters[0]; 1930 AudioParameter param = AudioParameter(keyValuePair); 1931 int value; 1932 1933 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 1934 reconfig = true; 1935 } 1936 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 1937 if (value != AUDIO_FORMAT_PCM_16_BIT) { 1938 status = BAD_VALUE; 1939 } else { 1940 reconfig = true; 1941 } 1942 } 1943 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 1944 if (value != AUDIO_CHANNEL_OUT_STEREO) { 1945 status = BAD_VALUE; 1946 } else { 1947 reconfig = true; 1948 } 1949 } 1950 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 1951 // do not accept frame count changes if tracks are open as the track buffer 1952 // size depends on frame count and correct behavior would not be garantied 1953 // if frame count is changed after track creation 1954 if (!mTracks.isEmpty()) { 1955 status = INVALID_OPERATION; 1956 } else { 1957 reconfig = true; 1958 } 1959 } 1960 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 1961 // when changing the audio output device, call addBatteryData to notify 1962 // the change 1963 if ((int)mDevice != value) { 1964 uint32_t params = 0; 1965 // check whether speaker is on 1966 if (value & AUDIO_DEVICE_OUT_SPEAKER) { 1967 params |= IMediaPlayerService::kBatteryDataSpeakerOn; 1968 } 1969 1970 int deviceWithoutSpeaker 1971 = AUDIO_DEVICE_OUT_ALL & ~AUDIO_DEVICE_OUT_SPEAKER; 1972 // check if any other device (except speaker) is on 1973 if (value & deviceWithoutSpeaker ) { 1974 params |= IMediaPlayerService::kBatteryDataOtherAudioDeviceOn; 1975 } 1976 1977 if (params != 0) { 1978 addBatteryData(params); 1979 } 1980 } 1981 1982 // forward device change to effects that have requested to be 1983 // aware of attached audio device. 1984 mDevice = (uint32_t)value; 1985 for (size_t i = 0; i < mEffectChains.size(); i++) { 1986 mEffectChains[i]->setDevice_l(mDevice); 1987 } 1988 } 1989 1990 if (status == NO_ERROR) { 1991 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 1992 keyValuePair.string()); 1993 if (!mStandby && status == INVALID_OPERATION) { 1994 mOutput->stream->common.standby(&mOutput->stream->common); 1995 mStandby = true; 1996 mBytesWritten = 0; 1997 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 1998 keyValuePair.string()); 1999 } 2000 if (status == NO_ERROR && reconfig) { 2001 delete mAudioMixer; 2002 readOutputParameters(); 2003 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 2004 for (size_t i = 0; i < mTracks.size() ; i++) { 2005 int name = getTrackName_l(); 2006 if (name < 0) break; 2007 mTracks[i]->mName = name; 2008 // limit track sample rate to 2 x new output sample rate 2009 if (mTracks[i]->mCblk->sampleRate > 2 * sampleRate()) { 2010 mTracks[i]->mCblk->sampleRate = 2 * sampleRate(); 2011 } 2012 } 2013 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2014 } 2015 } 2016 2017 mNewParameters.removeAt(0); 2018 2019 mParamStatus = status; 2020 mParamCond.signal(); 2021 mWaitWorkCV.wait(mLock); 2022 } 2023 return reconfig; 2024} 2025 2026status_t AudioFlinger::MixerThread::dumpInternals(int fd, const Vector<String16>& args) 2027{ 2028 const size_t SIZE = 256; 2029 char buffer[SIZE]; 2030 String8 result; 2031 2032 PlaybackThread::dumpInternals(fd, args); 2033 2034 snprintf(buffer, SIZE, "AudioMixer tracks: %08x\n", mAudioMixer->trackNames()); 2035 result.append(buffer); 2036 write(fd, result.string(), result.size()); 2037 return NO_ERROR; 2038} 2039 2040uint32_t AudioFlinger::MixerThread::activeSleepTimeUs() 2041{ 2042 return (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2043} 2044 2045uint32_t AudioFlinger::MixerThread::idleSleepTimeUs() 2046{ 2047 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2048} 2049 2050uint32_t AudioFlinger::MixerThread::suspendSleepTimeUs() 2051{ 2052 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2053} 2054 2055// ---------------------------------------------------------------------------- 2056AudioFlinger::DirectOutputThread::DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 2057 : PlaybackThread(audioFlinger, output, id, device) 2058{ 2059 mType = ThreadBase::DIRECT; 2060} 2061 2062AudioFlinger::DirectOutputThread::~DirectOutputThread() 2063{ 2064} 2065 2066 2067static inline int16_t clamp16(int32_t sample) 2068{ 2069 if ((sample>>15) ^ (sample>>31)) 2070 sample = 0x7FFF ^ (sample>>31); 2071 return sample; 2072} 2073 2074static inline 2075int32_t mul(int16_t in, int16_t v) 2076{ 2077#if defined(__arm__) && !defined(__thumb__) 2078 int32_t out; 2079 asm( "smulbb %[out], %[in], %[v] \n" 2080 : [out]"=r"(out) 2081 : [in]"%r"(in), [v]"r"(v) 2082 : ); 2083 return out; 2084#else 2085 return in * int32_t(v); 2086#endif 2087} 2088 2089void AudioFlinger::DirectOutputThread::applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp) 2090{ 2091 // Do not apply volume on compressed audio 2092 if (!audio_is_linear_pcm(mFormat)) { 2093 return; 2094 } 2095 2096 // convert to signed 16 bit before volume calculation 2097 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2098 size_t count = mFrameCount * mChannelCount; 2099 uint8_t *src = (uint8_t *)mMixBuffer + count-1; 2100 int16_t *dst = mMixBuffer + count-1; 2101 while(count--) { 2102 *dst-- = (int16_t)(*src--^0x80) << 8; 2103 } 2104 } 2105 2106 size_t frameCount = mFrameCount; 2107 int16_t *out = mMixBuffer; 2108 if (ramp) { 2109 if (mChannelCount == 1) { 2110 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2111 int32_t vlInc = d / (int32_t)frameCount; 2112 int32_t vl = ((int32_t)mLeftVolShort << 16); 2113 do { 2114 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2115 out++; 2116 vl += vlInc; 2117 } while (--frameCount); 2118 2119 } else { 2120 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2121 int32_t vlInc = d / (int32_t)frameCount; 2122 d = ((int32_t)rightVol - (int32_t)mRightVolShort) << 16; 2123 int32_t vrInc = d / (int32_t)frameCount; 2124 int32_t vl = ((int32_t)mLeftVolShort << 16); 2125 int32_t vr = ((int32_t)mRightVolShort << 16); 2126 do { 2127 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2128 out[1] = clamp16(mul(out[1], vr >> 16) >> 12); 2129 out += 2; 2130 vl += vlInc; 2131 vr += vrInc; 2132 } while (--frameCount); 2133 } 2134 } else { 2135 if (mChannelCount == 1) { 2136 do { 2137 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2138 out++; 2139 } while (--frameCount); 2140 } else { 2141 do { 2142 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2143 out[1] = clamp16(mul(out[1], rightVol) >> 12); 2144 out += 2; 2145 } while (--frameCount); 2146 } 2147 } 2148 2149 // convert back to unsigned 8 bit after volume calculation 2150 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2151 size_t count = mFrameCount * mChannelCount; 2152 int16_t *src = mMixBuffer; 2153 uint8_t *dst = (uint8_t *)mMixBuffer; 2154 while(count--) { 2155 *dst++ = (uint8_t)(((int32_t)*src++ + (1<<7)) >> 8)^0x80; 2156 } 2157 } 2158 2159 mLeftVolShort = leftVol; 2160 mRightVolShort = rightVol; 2161} 2162 2163bool AudioFlinger::DirectOutputThread::threadLoop() 2164{ 2165 uint32_t mixerStatus = MIXER_IDLE; 2166 sp<Track> trackToRemove; 2167 sp<Track> activeTrack; 2168 nsecs_t standbyTime = systemTime(); 2169 int8_t *curBuf; 2170 size_t mixBufferSize = mFrameCount*mFrameSize; 2171 uint32_t activeSleepTime = activeSleepTimeUs(); 2172 uint32_t idleSleepTime = idleSleepTimeUs(); 2173 uint32_t sleepTime = idleSleepTime; 2174 // use shorter standby delay as on normal output to release 2175 // hardware resources as soon as possible 2176 nsecs_t standbyDelay = microseconds(activeSleepTime*2); 2177 2178 while (!exitPending()) 2179 { 2180 bool rampVolume; 2181 uint16_t leftVol; 2182 uint16_t rightVol; 2183 Vector< sp<EffectChain> > effectChains; 2184 2185 processConfigEvents(); 2186 2187 mixerStatus = MIXER_IDLE; 2188 2189 { // scope for the mLock 2190 2191 Mutex::Autolock _l(mLock); 2192 2193 if (checkForNewParameters_l()) { 2194 mixBufferSize = mFrameCount*mFrameSize; 2195 activeSleepTime = activeSleepTimeUs(); 2196 idleSleepTime = idleSleepTimeUs(); 2197 standbyDelay = microseconds(activeSleepTime*2); 2198 } 2199 2200 // put audio hardware into standby after short delay 2201 if UNLIKELY((!mActiveTracks.size() && systemTime() > standbyTime) || 2202 mSuspended) { 2203 // wait until we have something to do... 2204 if (!mStandby) { 2205 LOGV("Audio hardware entering standby, mixer %p\n", this); 2206 mOutput->stream->common.standby(&mOutput->stream->common); 2207 mStandby = true; 2208 mBytesWritten = 0; 2209 } 2210 2211 if (!mActiveTracks.size() && mConfigEvents.isEmpty()) { 2212 // we're about to wait, flush the binder command buffer 2213 IPCThreadState::self()->flushCommands(); 2214 2215 if (exitPending()) break; 2216 2217 LOGV("DirectOutputThread %p TID %d going to sleep\n", this, gettid()); 2218 mWaitWorkCV.wait(mLock); 2219 LOGV("DirectOutputThread %p TID %d waking up in active mode\n", this, gettid()); 2220 2221 if (mMasterMute == false) { 2222 char value[PROPERTY_VALUE_MAX]; 2223 property_get("ro.audio.silent", value, "0"); 2224 if (atoi(value)) { 2225 LOGD("Silence is golden"); 2226 setMasterMute(true); 2227 } 2228 } 2229 2230 standbyTime = systemTime() + standbyDelay; 2231 sleepTime = idleSleepTime; 2232 continue; 2233 } 2234 } 2235 2236 effectChains = mEffectChains; 2237 2238 // find out which tracks need to be processed 2239 if (mActiveTracks.size() != 0) { 2240 sp<Track> t = mActiveTracks[0].promote(); 2241 if (t == 0) continue; 2242 2243 Track* const track = t.get(); 2244 audio_track_cblk_t* cblk = track->cblk(); 2245 2246 // The first time a track is added we wait 2247 // for all its buffers to be filled before processing it 2248 if (cblk->framesReady() && track->isReady() && 2249 !track->isPaused() && !track->isTerminated()) 2250 { 2251 //LOGV("track %d u=%08x, s=%08x [OK]", track->name(), cblk->user, cblk->server); 2252 2253 if (track->mFillingUpStatus == Track::FS_FILLED) { 2254 track->mFillingUpStatus = Track::FS_ACTIVE; 2255 mLeftVolFloat = mRightVolFloat = 0; 2256 mLeftVolShort = mRightVolShort = 0; 2257 if (track->mState == TrackBase::RESUMING) { 2258 track->mState = TrackBase::ACTIVE; 2259 rampVolume = true; 2260 } 2261 } else if (cblk->server != 0) { 2262 // If the track is stopped before the first frame was mixed, 2263 // do not apply ramp 2264 rampVolume = true; 2265 } 2266 // compute volume for this track 2267 float left, right; 2268 if (track->isMuted() || mMasterMute || track->isPausing() || 2269 mStreamTypes[track->type()].mute) { 2270 left = right = 0; 2271 if (track->isPausing()) { 2272 track->setPaused(); 2273 } 2274 } else { 2275 float typeVolume = mStreamTypes[track->type()].volume; 2276 float v = mMasterVolume * typeVolume; 2277 float v_clamped = v * cblk->volume[0]; 2278 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2279 left = v_clamped/MAX_GAIN; 2280 v_clamped = v * cblk->volume[1]; 2281 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2282 right = v_clamped/MAX_GAIN; 2283 } 2284 2285 if (left != mLeftVolFloat || right != mRightVolFloat) { 2286 mLeftVolFloat = left; 2287 mRightVolFloat = right; 2288 2289 // If audio HAL implements volume control, 2290 // force software volume to nominal value 2291 if (mOutput->stream->set_volume(mOutput->stream, left, right) == NO_ERROR) { 2292 left = 1.0f; 2293 right = 1.0f; 2294 } 2295 2296 // Convert volumes from float to 8.24 2297 uint32_t vl = (uint32_t)(left * (1 << 24)); 2298 uint32_t vr = (uint32_t)(right * (1 << 24)); 2299 2300 // Delegate volume control to effect in track effect chain if needed 2301 // only one effect chain can be present on DirectOutputThread, so if 2302 // there is one, the track is connected to it 2303 if (!effectChains.isEmpty()) { 2304 // Do not ramp volume if volume is controlled by effect 2305 if(effectChains[0]->setVolume_l(&vl, &vr)) { 2306 rampVolume = false; 2307 } 2308 } 2309 2310 // Convert volumes from 8.24 to 4.12 format 2311 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 2312 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2313 leftVol = (uint16_t)v_clamped; 2314 v_clamped = (vr + (1 << 11)) >> 12; 2315 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2316 rightVol = (uint16_t)v_clamped; 2317 } else { 2318 leftVol = mLeftVolShort; 2319 rightVol = mRightVolShort; 2320 rampVolume = false; 2321 } 2322 2323 // reset retry count 2324 track->mRetryCount = kMaxTrackRetriesDirect; 2325 activeTrack = t; 2326 mixerStatus = MIXER_TRACKS_READY; 2327 } else { 2328 //LOGV("track %d u=%08x, s=%08x [NOT READY]", track->name(), cblk->user, cblk->server); 2329 if (track->isStopped()) { 2330 track->reset(); 2331 } 2332 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 2333 // We have consumed all the buffers of this track. 2334 // Remove it from the list of active tracks. 2335 trackToRemove = track; 2336 } else { 2337 // No buffers for this track. Give it a few chances to 2338 // fill a buffer, then remove it from active list. 2339 if (--(track->mRetryCount) <= 0) { 2340 LOGV("BUFFER TIMEOUT: remove(%d) from active list", track->name()); 2341 trackToRemove = track; 2342 } else { 2343 mixerStatus = MIXER_TRACKS_ENABLED; 2344 } 2345 } 2346 } 2347 } 2348 2349 // remove all the tracks that need to be... 2350 if (UNLIKELY(trackToRemove != 0)) { 2351 mActiveTracks.remove(trackToRemove); 2352 if (!effectChains.isEmpty()) { 2353 LOGV("stopping track on chain %p for session Id: %d", effectChains[0].get(), 2354 trackToRemove->sessionId()); 2355 effectChains[0]->decActiveTrackCnt(); 2356 } 2357 if (trackToRemove->isTerminated()) { 2358 removeTrack_l(trackToRemove); 2359 } 2360 } 2361 2362 lockEffectChains_l(effectChains); 2363 } 2364 2365 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2366 AudioBufferProvider::Buffer buffer; 2367 size_t frameCount = mFrameCount; 2368 curBuf = (int8_t *)mMixBuffer; 2369 // output audio to hardware 2370 while (frameCount) { 2371 buffer.frameCount = frameCount; 2372 activeTrack->getNextBuffer(&buffer); 2373 if (UNLIKELY(buffer.raw == 0)) { 2374 memset(curBuf, 0, frameCount * mFrameSize); 2375 break; 2376 } 2377 memcpy(curBuf, buffer.raw, buffer.frameCount * mFrameSize); 2378 frameCount -= buffer.frameCount; 2379 curBuf += buffer.frameCount * mFrameSize; 2380 activeTrack->releaseBuffer(&buffer); 2381 } 2382 sleepTime = 0; 2383 standbyTime = systemTime() + standbyDelay; 2384 } else { 2385 if (sleepTime == 0) { 2386 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2387 sleepTime = activeSleepTime; 2388 } else { 2389 sleepTime = idleSleepTime; 2390 } 2391 } else if (mBytesWritten != 0 && audio_is_linear_pcm(mFormat)) { 2392 memset (mMixBuffer, 0, mFrameCount * mFrameSize); 2393 sleepTime = 0; 2394 } 2395 } 2396 2397 if (mSuspended) { 2398 sleepTime = suspendSleepTimeUs(); 2399 } 2400 // sleepTime == 0 means we must write to audio hardware 2401 if (sleepTime == 0) { 2402 if (mixerStatus == MIXER_TRACKS_READY) { 2403 applyVolume(leftVol, rightVol, rampVolume); 2404 } 2405 for (size_t i = 0; i < effectChains.size(); i ++) { 2406 effectChains[i]->process_l(); 2407 } 2408 unlockEffectChains(effectChains); 2409 2410 mLastWriteTime = systemTime(); 2411 mInWrite = true; 2412 mBytesWritten += mixBufferSize; 2413 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 2414 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 2415 mNumWrites++; 2416 mInWrite = false; 2417 mStandby = false; 2418 } else { 2419 unlockEffectChains(effectChains); 2420 usleep(sleepTime); 2421 } 2422 2423 // finally let go of removed track, without the lock held 2424 // since we can't guarantee the destructors won't acquire that 2425 // same lock. 2426 trackToRemove.clear(); 2427 activeTrack.clear(); 2428 2429 // Effect chains will be actually deleted here if they were removed from 2430 // mEffectChains list during mixing or effects processing 2431 effectChains.clear(); 2432 } 2433 2434 if (!mStandby) { 2435 mOutput->stream->common.standby(&mOutput->stream->common); 2436 } 2437 2438 LOGV("DirectOutputThread %p exiting", this); 2439 return false; 2440} 2441 2442// getTrackName_l() must be called with ThreadBase::mLock held 2443int AudioFlinger::DirectOutputThread::getTrackName_l() 2444{ 2445 return 0; 2446} 2447 2448// deleteTrackName_l() must be called with ThreadBase::mLock held 2449void AudioFlinger::DirectOutputThread::deleteTrackName_l(int name) 2450{ 2451} 2452 2453// checkForNewParameters_l() must be called with ThreadBase::mLock held 2454bool AudioFlinger::DirectOutputThread::checkForNewParameters_l() 2455{ 2456 bool reconfig = false; 2457 2458 while (!mNewParameters.isEmpty()) { 2459 status_t status = NO_ERROR; 2460 String8 keyValuePair = mNewParameters[0]; 2461 AudioParameter param = AudioParameter(keyValuePair); 2462 int value; 2463 2464 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 2465 // do not accept frame count changes if tracks are open as the track buffer 2466 // size depends on frame count and correct behavior would not be garantied 2467 // if frame count is changed after track creation 2468 if (!mTracks.isEmpty()) { 2469 status = INVALID_OPERATION; 2470 } else { 2471 reconfig = true; 2472 } 2473 } 2474 if (status == NO_ERROR) { 2475 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2476 keyValuePair.string()); 2477 if (!mStandby && status == INVALID_OPERATION) { 2478 mOutput->stream->common.standby(&mOutput->stream->common); 2479 mStandby = true; 2480 mBytesWritten = 0; 2481 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2482 keyValuePair.string()); 2483 } 2484 if (status == NO_ERROR && reconfig) { 2485 readOutputParameters(); 2486 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2487 } 2488 } 2489 2490 mNewParameters.removeAt(0); 2491 2492 mParamStatus = status; 2493 mParamCond.signal(); 2494 mWaitWorkCV.wait(mLock); 2495 } 2496 return reconfig; 2497} 2498 2499uint32_t AudioFlinger::DirectOutputThread::activeSleepTimeUs() 2500{ 2501 uint32_t time; 2502 if (audio_is_linear_pcm(mFormat)) { 2503 time = (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2504 } else { 2505 time = 10000; 2506 } 2507 return time; 2508} 2509 2510uint32_t AudioFlinger::DirectOutputThread::idleSleepTimeUs() 2511{ 2512 uint32_t time; 2513 if (audio_is_linear_pcm(mFormat)) { 2514 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2515 } else { 2516 time = 10000; 2517 } 2518 return time; 2519} 2520 2521uint32_t AudioFlinger::DirectOutputThread::suspendSleepTimeUs() 2522{ 2523 uint32_t time; 2524 if (audio_is_linear_pcm(mFormat)) { 2525 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2526 } else { 2527 time = 10000; 2528 } 2529 return time; 2530} 2531 2532 2533// ---------------------------------------------------------------------------- 2534 2535AudioFlinger::DuplicatingThread::DuplicatingThread(const sp<AudioFlinger>& audioFlinger, AudioFlinger::MixerThread* mainThread, int id) 2536 : MixerThread(audioFlinger, mainThread->getOutput(), id, mainThread->device()), mWaitTimeMs(UINT_MAX) 2537{ 2538 mType = ThreadBase::DUPLICATING; 2539 addOutputTrack(mainThread); 2540} 2541 2542AudioFlinger::DuplicatingThread::~DuplicatingThread() 2543{ 2544 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2545 mOutputTracks[i]->destroy(); 2546 } 2547 mOutputTracks.clear(); 2548} 2549 2550bool AudioFlinger::DuplicatingThread::threadLoop() 2551{ 2552 Vector< sp<Track> > tracksToRemove; 2553 uint32_t mixerStatus = MIXER_IDLE; 2554 nsecs_t standbyTime = systemTime(); 2555 size_t mixBufferSize = mFrameCount*mFrameSize; 2556 SortedVector< sp<OutputTrack> > outputTracks; 2557 uint32_t writeFrames = 0; 2558 uint32_t activeSleepTime = activeSleepTimeUs(); 2559 uint32_t idleSleepTime = idleSleepTimeUs(); 2560 uint32_t sleepTime = idleSleepTime; 2561 Vector< sp<EffectChain> > effectChains; 2562 2563 while (!exitPending()) 2564 { 2565 processConfigEvents(); 2566 2567 mixerStatus = MIXER_IDLE; 2568 { // scope for the mLock 2569 2570 Mutex::Autolock _l(mLock); 2571 2572 if (checkForNewParameters_l()) { 2573 mixBufferSize = mFrameCount*mFrameSize; 2574 updateWaitTime(); 2575 activeSleepTime = activeSleepTimeUs(); 2576 idleSleepTime = idleSleepTimeUs(); 2577 } 2578 2579 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 2580 2581 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2582 outputTracks.add(mOutputTracks[i]); 2583 } 2584 2585 // put audio hardware into standby after short delay 2586 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 2587 mSuspended) { 2588 if (!mStandby) { 2589 for (size_t i = 0; i < outputTracks.size(); i++) { 2590 outputTracks[i]->stop(); 2591 } 2592 mStandby = true; 2593 mBytesWritten = 0; 2594 } 2595 2596 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 2597 // we're about to wait, flush the binder command buffer 2598 IPCThreadState::self()->flushCommands(); 2599 outputTracks.clear(); 2600 2601 if (exitPending()) break; 2602 2603 LOGV("DuplicatingThread %p TID %d going to sleep\n", this, gettid()); 2604 mWaitWorkCV.wait(mLock); 2605 LOGV("DuplicatingThread %p TID %d waking up\n", this, gettid()); 2606 if (mMasterMute == false) { 2607 char value[PROPERTY_VALUE_MAX]; 2608 property_get("ro.audio.silent", value, "0"); 2609 if (atoi(value)) { 2610 LOGD("Silence is golden"); 2611 setMasterMute(true); 2612 } 2613 } 2614 2615 standbyTime = systemTime() + kStandbyTimeInNsecs; 2616 sleepTime = idleSleepTime; 2617 continue; 2618 } 2619 } 2620 2621 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 2622 2623 // prevent any changes in effect chain list and in each effect chain 2624 // during mixing and effect process as the audio buffers could be deleted 2625 // or modified if an effect is created or deleted 2626 lockEffectChains_l(effectChains); 2627 } 2628 2629 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2630 // mix buffers... 2631 if (outputsReady(outputTracks)) { 2632 mAudioMixer->process(); 2633 } else { 2634 memset(mMixBuffer, 0, mixBufferSize); 2635 } 2636 sleepTime = 0; 2637 writeFrames = mFrameCount; 2638 } else { 2639 if (sleepTime == 0) { 2640 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2641 sleepTime = activeSleepTime; 2642 } else { 2643 sleepTime = idleSleepTime; 2644 } 2645 } else if (mBytesWritten != 0) { 2646 // flush remaining overflow buffers in output tracks 2647 for (size_t i = 0; i < outputTracks.size(); i++) { 2648 if (outputTracks[i]->isActive()) { 2649 sleepTime = 0; 2650 writeFrames = 0; 2651 memset(mMixBuffer, 0, mixBufferSize); 2652 break; 2653 } 2654 } 2655 } 2656 } 2657 2658 if (mSuspended) { 2659 sleepTime = suspendSleepTimeUs(); 2660 } 2661 // sleepTime == 0 means we must write to audio hardware 2662 if (sleepTime == 0) { 2663 for (size_t i = 0; i < effectChains.size(); i ++) { 2664 effectChains[i]->process_l(); 2665 } 2666 // enable changes in effect chain 2667 unlockEffectChains(effectChains); 2668 2669 standbyTime = systemTime() + kStandbyTimeInNsecs; 2670 for (size_t i = 0; i < outputTracks.size(); i++) { 2671 outputTracks[i]->write(mMixBuffer, writeFrames); 2672 } 2673 mStandby = false; 2674 mBytesWritten += mixBufferSize; 2675 } else { 2676 // enable changes in effect chain 2677 unlockEffectChains(effectChains); 2678 usleep(sleepTime); 2679 } 2680 2681 // finally let go of all our tracks, without the lock held 2682 // since we can't guarantee the destructors won't acquire that 2683 // same lock. 2684 tracksToRemove.clear(); 2685 outputTracks.clear(); 2686 2687 // Effect chains will be actually deleted here if they were removed from 2688 // mEffectChains list during mixing or effects processing 2689 effectChains.clear(); 2690 } 2691 2692 return false; 2693} 2694 2695void AudioFlinger::DuplicatingThread::addOutputTrack(MixerThread *thread) 2696{ 2697 int frameCount = (3 * mFrameCount * mSampleRate) / thread->sampleRate(); 2698 OutputTrack *outputTrack = new OutputTrack((ThreadBase *)thread, 2699 this, 2700 mSampleRate, 2701 mFormat, 2702 mChannelMask, 2703 frameCount); 2704 if (outputTrack->cblk() != NULL) { 2705 thread->setStreamVolume(AUDIO_STREAM_CNT, 1.0f); 2706 mOutputTracks.add(outputTrack); 2707 LOGV("addOutputTrack() track %p, on thread %p", outputTrack, thread); 2708 updateWaitTime(); 2709 } 2710} 2711 2712void AudioFlinger::DuplicatingThread::removeOutputTrack(MixerThread *thread) 2713{ 2714 Mutex::Autolock _l(mLock); 2715 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2716 if (mOutputTracks[i]->thread() == (ThreadBase *)thread) { 2717 mOutputTracks[i]->destroy(); 2718 mOutputTracks.removeAt(i); 2719 updateWaitTime(); 2720 return; 2721 } 2722 } 2723 LOGV("removeOutputTrack(): unkonwn thread: %p", thread); 2724} 2725 2726void AudioFlinger::DuplicatingThread::updateWaitTime() 2727{ 2728 mWaitTimeMs = UINT_MAX; 2729 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2730 sp<ThreadBase> strong = mOutputTracks[i]->thread().promote(); 2731 if (strong != NULL) { 2732 uint32_t waitTimeMs = (strong->frameCount() * 2 * 1000) / strong->sampleRate(); 2733 if (waitTimeMs < mWaitTimeMs) { 2734 mWaitTimeMs = waitTimeMs; 2735 } 2736 } 2737 } 2738} 2739 2740 2741bool AudioFlinger::DuplicatingThread::outputsReady(SortedVector< sp<OutputTrack> > &outputTracks) 2742{ 2743 for (size_t i = 0; i < outputTracks.size(); i++) { 2744 sp <ThreadBase> thread = outputTracks[i]->thread().promote(); 2745 if (thread == 0) { 2746 LOGW("DuplicatingThread::outputsReady() could not promote thread on output track %p", outputTracks[i].get()); 2747 return false; 2748 } 2749 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 2750 if (playbackThread->standby() && !playbackThread->isSuspended()) { 2751 LOGV("DuplicatingThread output track %p on thread %p Not Ready", outputTracks[i].get(), thread.get()); 2752 return false; 2753 } 2754 } 2755 return true; 2756} 2757 2758uint32_t AudioFlinger::DuplicatingThread::activeSleepTimeUs() 2759{ 2760 return (mWaitTimeMs * 1000) / 2; 2761} 2762 2763// ---------------------------------------------------------------------------- 2764 2765// TrackBase constructor must be called with AudioFlinger::mLock held 2766AudioFlinger::ThreadBase::TrackBase::TrackBase( 2767 const wp<ThreadBase>& thread, 2768 const sp<Client>& client, 2769 uint32_t sampleRate, 2770 uint32_t format, 2771 uint32_t channelMask, 2772 int frameCount, 2773 uint32_t flags, 2774 const sp<IMemory>& sharedBuffer, 2775 int sessionId) 2776 : RefBase(), 2777 mThread(thread), 2778 mClient(client), 2779 mCblk(0), 2780 mFrameCount(0), 2781 mState(IDLE), 2782 mClientTid(-1), 2783 mFormat(format), 2784 mFlags(flags & ~SYSTEM_FLAGS_MASK), 2785 mSessionId(sessionId) 2786{ 2787 LOGV_IF(sharedBuffer != 0, "sharedBuffer: %p, size: %d", sharedBuffer->pointer(), sharedBuffer->size()); 2788 2789 // LOGD("Creating track with %d buffers @ %d bytes", bufferCount, bufferSize); 2790 size_t size = sizeof(audio_track_cblk_t); 2791 uint8_t channelCount = popcount(channelMask); 2792 size_t bufferSize = frameCount*channelCount*sizeof(int16_t); 2793 if (sharedBuffer == 0) { 2794 size += bufferSize; 2795 } 2796 2797 if (client != NULL) { 2798 mCblkMemory = client->heap()->allocate(size); 2799 if (mCblkMemory != 0) { 2800 mCblk = static_cast<audio_track_cblk_t *>(mCblkMemory->pointer()); 2801 if (mCblk) { // construct the shared structure in-place. 2802 new(mCblk) audio_track_cblk_t(); 2803 // clear all buffers 2804 mCblk->frameCount = frameCount; 2805 mCblk->sampleRate = sampleRate; 2806 mChannelCount = channelCount; 2807 mChannelMask = channelMask; 2808 if (sharedBuffer == 0) { 2809 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 2810 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 2811 // Force underrun condition to avoid false underrun callback until first data is 2812 // written to buffer (other flags are cleared) 2813 mCblk->flags = CBLK_UNDERRUN_ON; 2814 } else { 2815 mBuffer = sharedBuffer->pointer(); 2816 } 2817 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 2818 } 2819 } else { 2820 LOGE("not enough memory for AudioTrack size=%u", size); 2821 client->heap()->dump("AudioTrack"); 2822 return; 2823 } 2824 } else { 2825 mCblk = (audio_track_cblk_t *)(new uint8_t[size]); 2826 if (mCblk) { // construct the shared structure in-place. 2827 new(mCblk) audio_track_cblk_t(); 2828 // clear all buffers 2829 mCblk->frameCount = frameCount; 2830 mCblk->sampleRate = sampleRate; 2831 mChannelCount = channelCount; 2832 mChannelMask = channelMask; 2833 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 2834 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 2835 // Force underrun condition to avoid false underrun callback until first data is 2836 // written to buffer (other flags are cleared) 2837 mCblk->flags = CBLK_UNDERRUN_ON; 2838 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 2839 } 2840 } 2841} 2842 2843AudioFlinger::ThreadBase::TrackBase::~TrackBase() 2844{ 2845 if (mCblk) { 2846 mCblk->~audio_track_cblk_t(); // destroy our shared-structure. 2847 if (mClient == NULL) { 2848 delete mCblk; 2849 } 2850 } 2851 mCblkMemory.clear(); // and free the shared memory 2852 if (mClient != NULL) { 2853 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 2854 mClient.clear(); 2855 } 2856} 2857 2858void AudioFlinger::ThreadBase::TrackBase::releaseBuffer(AudioBufferProvider::Buffer* buffer) 2859{ 2860 buffer->raw = 0; 2861 mFrameCount = buffer->frameCount; 2862 step(); 2863 buffer->frameCount = 0; 2864} 2865 2866bool AudioFlinger::ThreadBase::TrackBase::step() { 2867 bool result; 2868 audio_track_cblk_t* cblk = this->cblk(); 2869 2870 result = cblk->stepServer(mFrameCount); 2871 if (!result) { 2872 LOGV("stepServer failed acquiring cblk mutex"); 2873 mFlags |= STEPSERVER_FAILED; 2874 } 2875 return result; 2876} 2877 2878void AudioFlinger::ThreadBase::TrackBase::reset() { 2879 audio_track_cblk_t* cblk = this->cblk(); 2880 2881 cblk->user = 0; 2882 cblk->server = 0; 2883 cblk->userBase = 0; 2884 cblk->serverBase = 0; 2885 mFlags &= (uint32_t)(~SYSTEM_FLAGS_MASK); 2886 LOGV("TrackBase::reset"); 2887} 2888 2889sp<IMemory> AudioFlinger::ThreadBase::TrackBase::getCblk() const 2890{ 2891 return mCblkMemory; 2892} 2893 2894int AudioFlinger::ThreadBase::TrackBase::sampleRate() const { 2895 return (int)mCblk->sampleRate; 2896} 2897 2898int AudioFlinger::ThreadBase::TrackBase::channelCount() const { 2899 return (const int)mChannelCount; 2900} 2901 2902uint32_t AudioFlinger::ThreadBase::TrackBase::channelMask() const { 2903 return mChannelMask; 2904} 2905 2906void* AudioFlinger::ThreadBase::TrackBase::getBuffer(uint32_t offset, uint32_t frames) const { 2907 audio_track_cblk_t* cblk = this->cblk(); 2908 int8_t *bufferStart = (int8_t *)mBuffer + (offset-cblk->serverBase)*cblk->frameSize; 2909 int8_t *bufferEnd = bufferStart + frames * cblk->frameSize; 2910 2911 // Check validity of returned pointer in case the track control block would have been corrupted. 2912 if (bufferStart < mBuffer || bufferStart > bufferEnd || bufferEnd > mBufferEnd || 2913 ((unsigned long)bufferStart & (unsigned long)(cblk->frameSize - 1))) { 2914 LOGE("TrackBase::getBuffer buffer out of range:\n start: %p, end %p , mBuffer %p mBufferEnd %p\n \ 2915 server %d, serverBase %d, user %d, userBase %d", 2916 bufferStart, bufferEnd, mBuffer, mBufferEnd, 2917 cblk->server, cblk->serverBase, cblk->user, cblk->userBase); 2918 return 0; 2919 } 2920 2921 return bufferStart; 2922} 2923 2924// ---------------------------------------------------------------------------- 2925 2926// Track constructor must be called with AudioFlinger::mLock and ThreadBase::mLock held 2927AudioFlinger::PlaybackThread::Track::Track( 2928 const wp<ThreadBase>& thread, 2929 const sp<Client>& client, 2930 int streamType, 2931 uint32_t sampleRate, 2932 uint32_t format, 2933 uint32_t channelMask, 2934 int frameCount, 2935 const sp<IMemory>& sharedBuffer, 2936 int sessionId) 2937 : TrackBase(thread, client, sampleRate, format, channelMask, frameCount, 0, sharedBuffer, sessionId), 2938 mMute(false), mSharedBuffer(sharedBuffer), mName(-1), mMainBuffer(NULL), mAuxBuffer(NULL), 2939 mAuxEffectId(0), mHasVolumeController(false) 2940{ 2941 if (mCblk != NULL) { 2942 sp<ThreadBase> baseThread = thread.promote(); 2943 if (baseThread != 0) { 2944 PlaybackThread *playbackThread = (PlaybackThread *)baseThread.get(); 2945 mName = playbackThread->getTrackName_l(); 2946 mMainBuffer = playbackThread->mixBuffer(); 2947 } 2948 LOGV("Track constructor name %d, calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 2949 if (mName < 0) { 2950 LOGE("no more track names available"); 2951 } 2952 mVolume[0] = 1.0f; 2953 mVolume[1] = 1.0f; 2954 mStreamType = streamType; 2955 // NOTE: audio_track_cblk_t::frameSize for 8 bit PCM data is based on a sample size of 2956 // 16 bit because data is converted to 16 bit before being stored in buffer by AudioTrack 2957 mCblk->frameSize = audio_is_linear_pcm(format) ? mChannelCount * sizeof(int16_t) : sizeof(uint8_t); 2958 } 2959} 2960 2961AudioFlinger::PlaybackThread::Track::~Track() 2962{ 2963 LOGV("PlaybackThread::Track destructor"); 2964 sp<ThreadBase> thread = mThread.promote(); 2965 if (thread != 0) { 2966 Mutex::Autolock _l(thread->mLock); 2967 mState = TERMINATED; 2968 } 2969} 2970 2971void AudioFlinger::PlaybackThread::Track::destroy() 2972{ 2973 // NOTE: destroyTrack_l() can remove a strong reference to this Track 2974 // by removing it from mTracks vector, so there is a risk that this Tracks's 2975 // desctructor is called. As the destructor needs to lock mLock, 2976 // we must acquire a strong reference on this Track before locking mLock 2977 // here so that the destructor is called only when exiting this function. 2978 // On the other hand, as long as Track::destroy() is only called by 2979 // TrackHandle destructor, the TrackHandle still holds a strong ref on 2980 // this Track with its member mTrack. 2981 sp<Track> keep(this); 2982 { // scope for mLock 2983 sp<ThreadBase> thread = mThread.promote(); 2984 if (thread != 0) { 2985 if (!isOutputTrack()) { 2986 if (mState == ACTIVE || mState == RESUMING) { 2987 AudioSystem::stopOutput(thread->id(), 2988 (audio_stream_type_t)mStreamType, 2989 mSessionId); 2990 2991 // to track the speaker usage 2992 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 2993 } 2994 AudioSystem::releaseOutput(thread->id()); 2995 } 2996 Mutex::Autolock _l(thread->mLock); 2997 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 2998 playbackThread->destroyTrack_l(this); 2999 } 3000 } 3001} 3002 3003void AudioFlinger::PlaybackThread::Track::dump(char* buffer, size_t size) 3004{ 3005 snprintf(buffer, size, " %05d %05d %03u %03u 0x%08x %05u %04u %1d %1d %1d %05u %05u %05u 0x%08x 0x%08x 0x%08x 0x%08x\n", 3006 mName - AudioMixer::TRACK0, 3007 (mClient == NULL) ? getpid() : mClient->pid(), 3008 mStreamType, 3009 mFormat, 3010 mChannelMask, 3011 mSessionId, 3012 mFrameCount, 3013 mState, 3014 mMute, 3015 mFillingUpStatus, 3016 mCblk->sampleRate, 3017 mCblk->volume[0], 3018 mCblk->volume[1], 3019 mCblk->server, 3020 mCblk->user, 3021 (int)mMainBuffer, 3022 (int)mAuxBuffer); 3023} 3024 3025status_t AudioFlinger::PlaybackThread::Track::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3026{ 3027 audio_track_cblk_t* cblk = this->cblk(); 3028 uint32_t framesReady; 3029 uint32_t framesReq = buffer->frameCount; 3030 3031 // Check if last stepServer failed, try to step now 3032 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3033 if (!step()) goto getNextBuffer_exit; 3034 LOGV("stepServer recovered"); 3035 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3036 } 3037 3038 framesReady = cblk->framesReady(); 3039 3040 if (LIKELY(framesReady)) { 3041 uint32_t s = cblk->server; 3042 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3043 3044 bufferEnd = (cblk->loopEnd < bufferEnd) ? cblk->loopEnd : bufferEnd; 3045 if (framesReq > framesReady) { 3046 framesReq = framesReady; 3047 } 3048 if (s + framesReq > bufferEnd) { 3049 framesReq = bufferEnd - s; 3050 } 3051 3052 buffer->raw = getBuffer(s, framesReq); 3053 if (buffer->raw == 0) goto getNextBuffer_exit; 3054 3055 buffer->frameCount = framesReq; 3056 return NO_ERROR; 3057 } 3058 3059getNextBuffer_exit: 3060 buffer->raw = 0; 3061 buffer->frameCount = 0; 3062 LOGV("getNextBuffer() no more data for track %d on thread %p", mName, mThread.unsafe_get()); 3063 return NOT_ENOUGH_DATA; 3064} 3065 3066bool AudioFlinger::PlaybackThread::Track::isReady() const { 3067 if (mFillingUpStatus != FS_FILLING || isStopped() || isPausing()) return true; 3068 3069 if (mCblk->framesReady() >= mCblk->frameCount || 3070 (mCblk->flags & CBLK_FORCEREADY_MSK)) { 3071 mFillingUpStatus = FS_FILLED; 3072 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3073 return true; 3074 } 3075 return false; 3076} 3077 3078status_t AudioFlinger::PlaybackThread::Track::start() 3079{ 3080 status_t status = NO_ERROR; 3081 LOGV("start(%d), calling thread %d session %d", 3082 mName, IPCThreadState::self()->getCallingPid(), mSessionId); 3083 sp<ThreadBase> thread = mThread.promote(); 3084 if (thread != 0) { 3085 Mutex::Autolock _l(thread->mLock); 3086 int state = mState; 3087 // here the track could be either new, or restarted 3088 // in both cases "unstop" the track 3089 if (mState == PAUSED) { 3090 mState = TrackBase::RESUMING; 3091 LOGV("PAUSED => RESUMING (%d) on thread %p", mName, this); 3092 } else { 3093 mState = TrackBase::ACTIVE; 3094 LOGV("? => ACTIVE (%d) on thread %p", mName, this); 3095 } 3096 3097 if (!isOutputTrack() && state != ACTIVE && state != RESUMING) { 3098 thread->mLock.unlock(); 3099 status = AudioSystem::startOutput(thread->id(), 3100 (audio_stream_type_t)mStreamType, 3101 mSessionId); 3102 thread->mLock.lock(); 3103 3104 // to track the speaker usage 3105 if (status == NO_ERROR) { 3106 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStart); 3107 } 3108 } 3109 if (status == NO_ERROR) { 3110 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3111 playbackThread->addTrack_l(this); 3112 } else { 3113 mState = state; 3114 } 3115 } else { 3116 status = BAD_VALUE; 3117 } 3118 return status; 3119} 3120 3121void AudioFlinger::PlaybackThread::Track::stop() 3122{ 3123 LOGV("stop(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3124 sp<ThreadBase> thread = mThread.promote(); 3125 if (thread != 0) { 3126 Mutex::Autolock _l(thread->mLock); 3127 int state = mState; 3128 if (mState > STOPPED) { 3129 mState = STOPPED; 3130 // If the track is not active (PAUSED and buffers full), flush buffers 3131 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3132 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3133 reset(); 3134 } 3135 LOGV("(> STOPPED) => STOPPED (%d) on thread %p", mName, playbackThread); 3136 } 3137 if (!isOutputTrack() && (state == ACTIVE || state == RESUMING)) { 3138 thread->mLock.unlock(); 3139 AudioSystem::stopOutput(thread->id(), 3140 (audio_stream_type_t)mStreamType, 3141 mSessionId); 3142 thread->mLock.lock(); 3143 3144 // to track the speaker usage 3145 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3146 } 3147 } 3148} 3149 3150void AudioFlinger::PlaybackThread::Track::pause() 3151{ 3152 LOGV("pause(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3153 sp<ThreadBase> thread = mThread.promote(); 3154 if (thread != 0) { 3155 Mutex::Autolock _l(thread->mLock); 3156 if (mState == ACTIVE || mState == RESUMING) { 3157 mState = PAUSING; 3158 LOGV("ACTIVE/RESUMING => PAUSING (%d) on thread %p", mName, thread.get()); 3159 if (!isOutputTrack()) { 3160 thread->mLock.unlock(); 3161 AudioSystem::stopOutput(thread->id(), 3162 (audio_stream_type_t)mStreamType, 3163 mSessionId); 3164 thread->mLock.lock(); 3165 3166 // to track the speaker usage 3167 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3168 } 3169 } 3170 } 3171} 3172 3173void AudioFlinger::PlaybackThread::Track::flush() 3174{ 3175 LOGV("flush(%d)", mName); 3176 sp<ThreadBase> thread = mThread.promote(); 3177 if (thread != 0) { 3178 Mutex::Autolock _l(thread->mLock); 3179 if (mState != STOPPED && mState != PAUSED && mState != PAUSING) { 3180 return; 3181 } 3182 // No point remaining in PAUSED state after a flush => go to 3183 // STOPPED state 3184 mState = STOPPED; 3185 3186 // do not reset the track if it is still in the process of being stopped or paused. 3187 // this will be done by prepareTracks_l() when the track is stopped. 3188 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3189 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3190 reset(); 3191 } 3192 } 3193} 3194 3195void AudioFlinger::PlaybackThread::Track::reset() 3196{ 3197 // Do not reset twice to avoid discarding data written just after a flush and before 3198 // the audioflinger thread detects the track is stopped. 3199 if (!mResetDone) { 3200 TrackBase::reset(); 3201 // Force underrun condition to avoid false underrun callback until first data is 3202 // written to buffer 3203 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3204 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3205 mFillingUpStatus = FS_FILLING; 3206 mResetDone = true; 3207 } 3208} 3209 3210void AudioFlinger::PlaybackThread::Track::mute(bool muted) 3211{ 3212 mMute = muted; 3213} 3214 3215void AudioFlinger::PlaybackThread::Track::setVolume(float left, float right) 3216{ 3217 mVolume[0] = left; 3218 mVolume[1] = right; 3219} 3220 3221status_t AudioFlinger::PlaybackThread::Track::attachAuxEffect(int EffectId) 3222{ 3223 status_t status = DEAD_OBJECT; 3224 sp<ThreadBase> thread = mThread.promote(); 3225 if (thread != 0) { 3226 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3227 status = playbackThread->attachAuxEffect(this, EffectId); 3228 } 3229 return status; 3230} 3231 3232void AudioFlinger::PlaybackThread::Track::setAuxBuffer(int EffectId, int32_t *buffer) 3233{ 3234 mAuxEffectId = EffectId; 3235 mAuxBuffer = buffer; 3236} 3237 3238// ---------------------------------------------------------------------------- 3239 3240// RecordTrack constructor must be called with AudioFlinger::mLock held 3241AudioFlinger::RecordThread::RecordTrack::RecordTrack( 3242 const wp<ThreadBase>& thread, 3243 const sp<Client>& client, 3244 uint32_t sampleRate, 3245 uint32_t format, 3246 uint32_t channelMask, 3247 int frameCount, 3248 uint32_t flags, 3249 int sessionId) 3250 : TrackBase(thread, client, sampleRate, format, 3251 channelMask, frameCount, flags, 0, sessionId), 3252 mOverflow(false) 3253{ 3254 if (mCblk != NULL) { 3255 LOGV("RecordTrack constructor, size %d", (int)mBufferEnd - (int)mBuffer); 3256 if (format == AUDIO_FORMAT_PCM_16_BIT) { 3257 mCblk->frameSize = mChannelCount * sizeof(int16_t); 3258 } else if (format == AUDIO_FORMAT_PCM_8_BIT) { 3259 mCblk->frameSize = mChannelCount * sizeof(int8_t); 3260 } else { 3261 mCblk->frameSize = sizeof(int8_t); 3262 } 3263 } 3264} 3265 3266AudioFlinger::RecordThread::RecordTrack::~RecordTrack() 3267{ 3268 sp<ThreadBase> thread = mThread.promote(); 3269 if (thread != 0) { 3270 AudioSystem::releaseInput(thread->id()); 3271 } 3272} 3273 3274status_t AudioFlinger::RecordThread::RecordTrack::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3275{ 3276 audio_track_cblk_t* cblk = this->cblk(); 3277 uint32_t framesAvail; 3278 uint32_t framesReq = buffer->frameCount; 3279 3280 // Check if last stepServer failed, try to step now 3281 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3282 if (!step()) goto getNextBuffer_exit; 3283 LOGV("stepServer recovered"); 3284 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3285 } 3286 3287 framesAvail = cblk->framesAvailable_l(); 3288 3289 if (LIKELY(framesAvail)) { 3290 uint32_t s = cblk->server; 3291 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3292 3293 if (framesReq > framesAvail) { 3294 framesReq = framesAvail; 3295 } 3296 if (s + framesReq > bufferEnd) { 3297 framesReq = bufferEnd - s; 3298 } 3299 3300 buffer->raw = getBuffer(s, framesReq); 3301 if (buffer->raw == 0) goto getNextBuffer_exit; 3302 3303 buffer->frameCount = framesReq; 3304 return NO_ERROR; 3305 } 3306 3307getNextBuffer_exit: 3308 buffer->raw = 0; 3309 buffer->frameCount = 0; 3310 return NOT_ENOUGH_DATA; 3311} 3312 3313status_t AudioFlinger::RecordThread::RecordTrack::start() 3314{ 3315 sp<ThreadBase> thread = mThread.promote(); 3316 if (thread != 0) { 3317 RecordThread *recordThread = (RecordThread *)thread.get(); 3318 return recordThread->start(this); 3319 } else { 3320 return BAD_VALUE; 3321 } 3322} 3323 3324void AudioFlinger::RecordThread::RecordTrack::stop() 3325{ 3326 sp<ThreadBase> thread = mThread.promote(); 3327 if (thread != 0) { 3328 RecordThread *recordThread = (RecordThread *)thread.get(); 3329 recordThread->stop(this); 3330 TrackBase::reset(); 3331 // Force overerrun condition to avoid false overrun callback until first data is 3332 // read from buffer 3333 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3334 } 3335} 3336 3337void AudioFlinger::RecordThread::RecordTrack::dump(char* buffer, size_t size) 3338{ 3339 snprintf(buffer, size, " %05d %03u 0x%08x %05d %04u %01d %05u %08x %08x\n", 3340 (mClient == NULL) ? getpid() : mClient->pid(), 3341 mFormat, 3342 mChannelMask, 3343 mSessionId, 3344 mFrameCount, 3345 mState, 3346 mCblk->sampleRate, 3347 mCblk->server, 3348 mCblk->user); 3349} 3350 3351 3352// ---------------------------------------------------------------------------- 3353 3354AudioFlinger::PlaybackThread::OutputTrack::OutputTrack( 3355 const wp<ThreadBase>& thread, 3356 DuplicatingThread *sourceThread, 3357 uint32_t sampleRate, 3358 uint32_t format, 3359 uint32_t channelMask, 3360 int frameCount) 3361 : Track(thread, NULL, AUDIO_STREAM_CNT, sampleRate, format, channelMask, frameCount, NULL, 0), 3362 mActive(false), mSourceThread(sourceThread) 3363{ 3364 3365 PlaybackThread *playbackThread = (PlaybackThread *)thread.unsafe_get(); 3366 if (mCblk != NULL) { 3367 mCblk->flags |= CBLK_DIRECTION_OUT; 3368 mCblk->buffers = (char*)mCblk + sizeof(audio_track_cblk_t); 3369 mCblk->volume[0] = mCblk->volume[1] = 0x1000; 3370 mOutBuffer.frameCount = 0; 3371 playbackThread->mTracks.add(this); 3372 LOGV("OutputTrack constructor mCblk %p, mBuffer %p, mCblk->buffers %p, " \ 3373 "mCblk->frameCount %d, mCblk->sampleRate %d, mChannelMask 0x%08x mBufferEnd %p", 3374 mCblk, mBuffer, mCblk->buffers, 3375 mCblk->frameCount, mCblk->sampleRate, mChannelMask, mBufferEnd); 3376 } else { 3377 LOGW("Error creating output track on thread %p", playbackThread); 3378 } 3379} 3380 3381AudioFlinger::PlaybackThread::OutputTrack::~OutputTrack() 3382{ 3383 clearBufferQueue(); 3384} 3385 3386status_t AudioFlinger::PlaybackThread::OutputTrack::start() 3387{ 3388 status_t status = Track::start(); 3389 if (status != NO_ERROR) { 3390 return status; 3391 } 3392 3393 mActive = true; 3394 mRetryCount = 127; 3395 return status; 3396} 3397 3398void AudioFlinger::PlaybackThread::OutputTrack::stop() 3399{ 3400 Track::stop(); 3401 clearBufferQueue(); 3402 mOutBuffer.frameCount = 0; 3403 mActive = false; 3404} 3405 3406bool AudioFlinger::PlaybackThread::OutputTrack::write(int16_t* data, uint32_t frames) 3407{ 3408 Buffer *pInBuffer; 3409 Buffer inBuffer; 3410 uint32_t channelCount = mChannelCount; 3411 bool outputBufferFull = false; 3412 inBuffer.frameCount = frames; 3413 inBuffer.i16 = data; 3414 3415 uint32_t waitTimeLeftMs = mSourceThread->waitTimeMs(); 3416 3417 if (!mActive && frames != 0) { 3418 start(); 3419 sp<ThreadBase> thread = mThread.promote(); 3420 if (thread != 0) { 3421 MixerThread *mixerThread = (MixerThread *)thread.get(); 3422 if (mCblk->frameCount > frames){ 3423 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3424 uint32_t startFrames = (mCblk->frameCount - frames); 3425 pInBuffer = new Buffer; 3426 pInBuffer->mBuffer = new int16_t[startFrames * channelCount]; 3427 pInBuffer->frameCount = startFrames; 3428 pInBuffer->i16 = pInBuffer->mBuffer; 3429 memset(pInBuffer->raw, 0, startFrames * channelCount * sizeof(int16_t)); 3430 mBufferQueue.add(pInBuffer); 3431 } else { 3432 LOGW ("OutputTrack::write() %p no more buffers in queue", this); 3433 } 3434 } 3435 } 3436 } 3437 3438 while (waitTimeLeftMs) { 3439 // First write pending buffers, then new data 3440 if (mBufferQueue.size()) { 3441 pInBuffer = mBufferQueue.itemAt(0); 3442 } else { 3443 pInBuffer = &inBuffer; 3444 } 3445 3446 if (pInBuffer->frameCount == 0) { 3447 break; 3448 } 3449 3450 if (mOutBuffer.frameCount == 0) { 3451 mOutBuffer.frameCount = pInBuffer->frameCount; 3452 nsecs_t startTime = systemTime(); 3453 if (obtainBuffer(&mOutBuffer, waitTimeLeftMs) == (status_t)AudioTrack::NO_MORE_BUFFERS) { 3454 LOGV ("OutputTrack::write() %p thread %p no more output buffers", this, mThread.unsafe_get()); 3455 outputBufferFull = true; 3456 break; 3457 } 3458 uint32_t waitTimeMs = (uint32_t)ns2ms(systemTime() - startTime); 3459 if (waitTimeLeftMs >= waitTimeMs) { 3460 waitTimeLeftMs -= waitTimeMs; 3461 } else { 3462 waitTimeLeftMs = 0; 3463 } 3464 } 3465 3466 uint32_t outFrames = pInBuffer->frameCount > mOutBuffer.frameCount ? mOutBuffer.frameCount : pInBuffer->frameCount; 3467 memcpy(mOutBuffer.raw, pInBuffer->raw, outFrames * channelCount * sizeof(int16_t)); 3468 mCblk->stepUser(outFrames); 3469 pInBuffer->frameCount -= outFrames; 3470 pInBuffer->i16 += outFrames * channelCount; 3471 mOutBuffer.frameCount -= outFrames; 3472 mOutBuffer.i16 += outFrames * channelCount; 3473 3474 if (pInBuffer->frameCount == 0) { 3475 if (mBufferQueue.size()) { 3476 mBufferQueue.removeAt(0); 3477 delete [] pInBuffer->mBuffer; 3478 delete pInBuffer; 3479 LOGV("OutputTrack::write() %p thread %p released overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3480 } else { 3481 break; 3482 } 3483 } 3484 } 3485 3486 // If we could not write all frames, allocate a buffer and queue it for next time. 3487 if (inBuffer.frameCount) { 3488 sp<ThreadBase> thread = mThread.promote(); 3489 if (thread != 0 && !thread->standby()) { 3490 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3491 pInBuffer = new Buffer; 3492 pInBuffer->mBuffer = new int16_t[inBuffer.frameCount * channelCount]; 3493 pInBuffer->frameCount = inBuffer.frameCount; 3494 pInBuffer->i16 = pInBuffer->mBuffer; 3495 memcpy(pInBuffer->raw, inBuffer.raw, inBuffer.frameCount * channelCount * sizeof(int16_t)); 3496 mBufferQueue.add(pInBuffer); 3497 LOGV("OutputTrack::write() %p thread %p adding overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3498 } else { 3499 LOGW("OutputTrack::write() %p thread %p no more overflow buffers", mThread.unsafe_get(), this); 3500 } 3501 } 3502 } 3503 3504 // Calling write() with a 0 length buffer, means that no more data will be written: 3505 // If no more buffers are pending, fill output track buffer to make sure it is started 3506 // by output mixer. 3507 if (frames == 0 && mBufferQueue.size() == 0) { 3508 if (mCblk->user < mCblk->frameCount) { 3509 frames = mCblk->frameCount - mCblk->user; 3510 pInBuffer = new Buffer; 3511 pInBuffer->mBuffer = new int16_t[frames * channelCount]; 3512 pInBuffer->frameCount = frames; 3513 pInBuffer->i16 = pInBuffer->mBuffer; 3514 memset(pInBuffer->raw, 0, frames * channelCount * sizeof(int16_t)); 3515 mBufferQueue.add(pInBuffer); 3516 } else if (mActive) { 3517 stop(); 3518 } 3519 } 3520 3521 return outputBufferFull; 3522} 3523 3524status_t AudioFlinger::PlaybackThread::OutputTrack::obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs) 3525{ 3526 int active; 3527 status_t result; 3528 audio_track_cblk_t* cblk = mCblk; 3529 uint32_t framesReq = buffer->frameCount; 3530 3531// LOGV("OutputTrack::obtainBuffer user %d, server %d", cblk->user, cblk->server); 3532 buffer->frameCount = 0; 3533 3534 uint32_t framesAvail = cblk->framesAvailable(); 3535 3536 3537 if (framesAvail == 0) { 3538 Mutex::Autolock _l(cblk->lock); 3539 goto start_loop_here; 3540 while (framesAvail == 0) { 3541 active = mActive; 3542 if (UNLIKELY(!active)) { 3543 LOGV("Not active and NO_MORE_BUFFERS"); 3544 return AudioTrack::NO_MORE_BUFFERS; 3545 } 3546 result = cblk->cv.waitRelative(cblk->lock, milliseconds(waitTimeMs)); 3547 if (result != NO_ERROR) { 3548 return AudioTrack::NO_MORE_BUFFERS; 3549 } 3550 // read the server count again 3551 start_loop_here: 3552 framesAvail = cblk->framesAvailable_l(); 3553 } 3554 } 3555 3556// if (framesAvail < framesReq) { 3557// return AudioTrack::NO_MORE_BUFFERS; 3558// } 3559 3560 if (framesReq > framesAvail) { 3561 framesReq = framesAvail; 3562 } 3563 3564 uint32_t u = cblk->user; 3565 uint32_t bufferEnd = cblk->userBase + cblk->frameCount; 3566 3567 if (u + framesReq > bufferEnd) { 3568 framesReq = bufferEnd - u; 3569 } 3570 3571 buffer->frameCount = framesReq; 3572 buffer->raw = (void *)cblk->buffer(u); 3573 return NO_ERROR; 3574} 3575 3576 3577void AudioFlinger::PlaybackThread::OutputTrack::clearBufferQueue() 3578{ 3579 size_t size = mBufferQueue.size(); 3580 Buffer *pBuffer; 3581 3582 for (size_t i = 0; i < size; i++) { 3583 pBuffer = mBufferQueue.itemAt(i); 3584 delete [] pBuffer->mBuffer; 3585 delete pBuffer; 3586 } 3587 mBufferQueue.clear(); 3588} 3589 3590// ---------------------------------------------------------------------------- 3591 3592AudioFlinger::Client::Client(const sp<AudioFlinger>& audioFlinger, pid_t pid) 3593 : RefBase(), 3594 mAudioFlinger(audioFlinger), 3595 mMemoryDealer(new MemoryDealer(1024*1024, "AudioFlinger::Client")), 3596 mPid(pid) 3597{ 3598 // 1 MB of address space is good for 32 tracks, 8 buffers each, 4 KB/buffer 3599} 3600 3601// Client destructor must be called with AudioFlinger::mLock held 3602AudioFlinger::Client::~Client() 3603{ 3604 mAudioFlinger->removeClient_l(mPid); 3605} 3606 3607const sp<MemoryDealer>& AudioFlinger::Client::heap() const 3608{ 3609 return mMemoryDealer; 3610} 3611 3612// ---------------------------------------------------------------------------- 3613 3614AudioFlinger::NotificationClient::NotificationClient(const sp<AudioFlinger>& audioFlinger, 3615 const sp<IAudioFlingerClient>& client, 3616 pid_t pid) 3617 : mAudioFlinger(audioFlinger), mPid(pid), mClient(client) 3618{ 3619} 3620 3621AudioFlinger::NotificationClient::~NotificationClient() 3622{ 3623 mClient.clear(); 3624} 3625 3626void AudioFlinger::NotificationClient::binderDied(const wp<IBinder>& who) 3627{ 3628 sp<NotificationClient> keep(this); 3629 { 3630 mAudioFlinger->removeNotificationClient(mPid); 3631 } 3632} 3633 3634// ---------------------------------------------------------------------------- 3635 3636AudioFlinger::TrackHandle::TrackHandle(const sp<AudioFlinger::PlaybackThread::Track>& track) 3637 : BnAudioTrack(), 3638 mTrack(track) 3639{ 3640} 3641 3642AudioFlinger::TrackHandle::~TrackHandle() { 3643 // just stop the track on deletion, associated resources 3644 // will be freed from the main thread once all pending buffers have 3645 // been played. Unless it's not in the active track list, in which 3646 // case we free everything now... 3647 mTrack->destroy(); 3648} 3649 3650status_t AudioFlinger::TrackHandle::start() { 3651 return mTrack->start(); 3652} 3653 3654void AudioFlinger::TrackHandle::stop() { 3655 mTrack->stop(); 3656} 3657 3658void AudioFlinger::TrackHandle::flush() { 3659 mTrack->flush(); 3660} 3661 3662void AudioFlinger::TrackHandle::mute(bool e) { 3663 mTrack->mute(e); 3664} 3665 3666void AudioFlinger::TrackHandle::pause() { 3667 mTrack->pause(); 3668} 3669 3670void AudioFlinger::TrackHandle::setVolume(float left, float right) { 3671 mTrack->setVolume(left, right); 3672} 3673 3674sp<IMemory> AudioFlinger::TrackHandle::getCblk() const { 3675 return mTrack->getCblk(); 3676} 3677 3678status_t AudioFlinger::TrackHandle::attachAuxEffect(int EffectId) 3679{ 3680 return mTrack->attachAuxEffect(EffectId); 3681} 3682 3683status_t AudioFlinger::TrackHandle::onTransact( 3684 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 3685{ 3686 return BnAudioTrack::onTransact(code, data, reply, flags); 3687} 3688 3689// ---------------------------------------------------------------------------- 3690 3691sp<IAudioRecord> AudioFlinger::openRecord( 3692 pid_t pid, 3693 int input, 3694 uint32_t sampleRate, 3695 uint32_t format, 3696 uint32_t channelMask, 3697 int frameCount, 3698 uint32_t flags, 3699 int *sessionId, 3700 status_t *status) 3701{ 3702 sp<RecordThread::RecordTrack> recordTrack; 3703 sp<RecordHandle> recordHandle; 3704 sp<Client> client; 3705 wp<Client> wclient; 3706 status_t lStatus; 3707 RecordThread *thread; 3708 size_t inFrameCount; 3709 int lSessionId; 3710 3711 // check calling permissions 3712 if (!recordingAllowed()) { 3713 lStatus = PERMISSION_DENIED; 3714 goto Exit; 3715 } 3716 3717 // add client to list 3718 { // scope for mLock 3719 Mutex::Autolock _l(mLock); 3720 thread = checkRecordThread_l(input); 3721 if (thread == NULL) { 3722 lStatus = BAD_VALUE; 3723 goto Exit; 3724 } 3725 3726 wclient = mClients.valueFor(pid); 3727 if (wclient != NULL) { 3728 client = wclient.promote(); 3729 } else { 3730 client = new Client(this, pid); 3731 mClients.add(pid, client); 3732 } 3733 3734 // If no audio session id is provided, create one here 3735 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 3736 lSessionId = *sessionId; 3737 } else { 3738 lSessionId = nextUniqueId(); 3739 if (sessionId != NULL) { 3740 *sessionId = lSessionId; 3741 } 3742 } 3743 // create new record track. The record track uses one track in mHardwareMixerThread by convention. 3744 recordTrack = thread->createRecordTrack_l(client, 3745 sampleRate, 3746 format, 3747 channelMask, 3748 frameCount, 3749 flags, 3750 lSessionId, 3751 &lStatus); 3752 } 3753 if (lStatus != NO_ERROR) { 3754 // remove local strong reference to Client before deleting the RecordTrack so that the Client 3755 // destructor is called by the TrackBase destructor with mLock held 3756 client.clear(); 3757 recordTrack.clear(); 3758 goto Exit; 3759 } 3760 3761 // return to handle to client 3762 recordHandle = new RecordHandle(recordTrack); 3763 lStatus = NO_ERROR; 3764 3765Exit: 3766 if (status) { 3767 *status = lStatus; 3768 } 3769 return recordHandle; 3770} 3771 3772// ---------------------------------------------------------------------------- 3773 3774AudioFlinger::RecordHandle::RecordHandle(const sp<AudioFlinger::RecordThread::RecordTrack>& recordTrack) 3775 : BnAudioRecord(), 3776 mRecordTrack(recordTrack) 3777{ 3778} 3779 3780AudioFlinger::RecordHandle::~RecordHandle() { 3781 stop(); 3782} 3783 3784status_t AudioFlinger::RecordHandle::start() { 3785 LOGV("RecordHandle::start()"); 3786 return mRecordTrack->start(); 3787} 3788 3789void AudioFlinger::RecordHandle::stop() { 3790 LOGV("RecordHandle::stop()"); 3791 mRecordTrack->stop(); 3792} 3793 3794sp<IMemory> AudioFlinger::RecordHandle::getCblk() const { 3795 return mRecordTrack->getCblk(); 3796} 3797 3798status_t AudioFlinger::RecordHandle::onTransact( 3799 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 3800{ 3801 return BnAudioRecord::onTransact(code, data, reply, flags); 3802} 3803 3804// ---------------------------------------------------------------------------- 3805 3806AudioFlinger::RecordThread::RecordThread(const sp<AudioFlinger>& audioFlinger, 3807 AudioStreamIn *input, 3808 uint32_t sampleRate, 3809 uint32_t channels, 3810 int id, 3811 uint32_t device) : 3812 ThreadBase(audioFlinger, id, device), 3813 mInput(input), mTrack(NULL), mResampler(0), mRsmpOutBuffer(0), mRsmpInBuffer(0) 3814{ 3815 mType = ThreadBase::RECORD; 3816 mReqChannelCount = popcount(channels); 3817 mReqSampleRate = sampleRate; 3818 readInputParameters(); 3819} 3820 3821 3822AudioFlinger::RecordThread::~RecordThread() 3823{ 3824 delete[] mRsmpInBuffer; 3825 if (mResampler != 0) { 3826 delete mResampler; 3827 delete[] mRsmpOutBuffer; 3828 } 3829} 3830 3831void AudioFlinger::RecordThread::onFirstRef() 3832{ 3833 const size_t SIZE = 256; 3834 char buffer[SIZE]; 3835 3836 snprintf(buffer, SIZE, "Record Thread %p", this); 3837 3838 run(buffer, PRIORITY_URGENT_AUDIO); 3839} 3840 3841bool AudioFlinger::RecordThread::threadLoop() 3842{ 3843 AudioBufferProvider::Buffer buffer; 3844 sp<RecordTrack> activeTrack; 3845 Vector< sp<EffectChain> > effectChains; 3846 3847 nsecs_t lastWarning = 0; 3848 3849 // start recording 3850 while (!exitPending()) { 3851 3852 processConfigEvents(); 3853 3854 { // scope for mLock 3855 Mutex::Autolock _l(mLock); 3856 checkForNewParameters_l(); 3857 if (mActiveTrack == 0 && mConfigEvents.isEmpty()) { 3858 if (!mStandby) { 3859 mInput->stream->common.standby(&mInput->stream->common); 3860 mStandby = true; 3861 } 3862 3863 if (exitPending()) break; 3864 3865 LOGV("RecordThread: loop stopping"); 3866 // go to sleep 3867 mWaitWorkCV.wait(mLock); 3868 LOGV("RecordThread: loop starting"); 3869 continue; 3870 } 3871 if (mActiveTrack != 0) { 3872 if (mActiveTrack->mState == TrackBase::PAUSING) { 3873 if (!mStandby) { 3874 mInput->stream->common.standby(&mInput->stream->common); 3875 mStandby = true; 3876 } 3877 mActiveTrack.clear(); 3878 mStartStopCond.broadcast(); 3879 } else if (mActiveTrack->mState == TrackBase::RESUMING) { 3880 if (mReqChannelCount != mActiveTrack->channelCount()) { 3881 mActiveTrack.clear(); 3882 mStartStopCond.broadcast(); 3883 } else if (mBytesRead != 0) { 3884 // record start succeeds only if first read from audio input 3885 // succeeds 3886 if (mBytesRead > 0) { 3887 mActiveTrack->mState = TrackBase::ACTIVE; 3888 } else { 3889 mActiveTrack.clear(); 3890 } 3891 mStartStopCond.broadcast(); 3892 } 3893 mStandby = false; 3894 } 3895 } 3896 lockEffectChains_l(effectChains); 3897 } 3898 3899 if (mActiveTrack != 0) { 3900 if (mActiveTrack->mState != TrackBase::ACTIVE && 3901 mActiveTrack->mState != TrackBase::RESUMING) { 3902 unlockEffectChains(effectChains); 3903 usleep(kRecordThreadSleepUs); 3904 continue; 3905 } 3906 for (size_t i = 0; i < effectChains.size(); i ++) { 3907 effectChains[i]->process_l(); 3908 } 3909 // enable changes in effect chain 3910 unlockEffectChains(effectChains); 3911 3912 buffer.frameCount = mFrameCount; 3913 if (LIKELY(mActiveTrack->getNextBuffer(&buffer) == NO_ERROR)) { 3914 size_t framesOut = buffer.frameCount; 3915 if (mResampler == 0) { 3916 // no resampling 3917 while (framesOut) { 3918 size_t framesIn = mFrameCount - mRsmpInIndex; 3919 if (framesIn) { 3920 int8_t *src = (int8_t *)mRsmpInBuffer + mRsmpInIndex * mFrameSize; 3921 int8_t *dst = buffer.i8 + (buffer.frameCount - framesOut) * mActiveTrack->mCblk->frameSize; 3922 if (framesIn > framesOut) 3923 framesIn = framesOut; 3924 mRsmpInIndex += framesIn; 3925 framesOut -= framesIn; 3926 if ((int)mChannelCount == mReqChannelCount || 3927 mFormat != AUDIO_FORMAT_PCM_16_BIT) { 3928 memcpy(dst, src, framesIn * mFrameSize); 3929 } else { 3930 int16_t *src16 = (int16_t *)src; 3931 int16_t *dst16 = (int16_t *)dst; 3932 if (mChannelCount == 1) { 3933 while (framesIn--) { 3934 *dst16++ = *src16; 3935 *dst16++ = *src16++; 3936 } 3937 } else { 3938 while (framesIn--) { 3939 *dst16++ = (int16_t)(((int32_t)*src16 + (int32_t)*(src16 + 1)) >> 1); 3940 src16 += 2; 3941 } 3942 } 3943 } 3944 } 3945 if (framesOut && mFrameCount == mRsmpInIndex) { 3946 if (framesOut == mFrameCount && 3947 ((int)mChannelCount == mReqChannelCount || mFormat != AUDIO_FORMAT_PCM_16_BIT)) { 3948 mBytesRead = mInput->stream->read(mInput->stream, buffer.raw, mInputBytes); 3949 framesOut = 0; 3950 } else { 3951 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 3952 mRsmpInIndex = 0; 3953 } 3954 if (mBytesRead < 0) { 3955 LOGE("Error reading audio input"); 3956 if (mActiveTrack->mState == TrackBase::ACTIVE) { 3957 // Force input into standby so that it tries to 3958 // recover at next read attempt 3959 mInput->stream->common.standby(&mInput->stream->common); 3960 usleep(kRecordThreadSleepUs); 3961 } 3962 mRsmpInIndex = mFrameCount; 3963 framesOut = 0; 3964 buffer.frameCount = 0; 3965 } 3966 } 3967 } 3968 } else { 3969 // resampling 3970 3971 memset(mRsmpOutBuffer, 0, framesOut * 2 * sizeof(int32_t)); 3972 // alter output frame count as if we were expecting stereo samples 3973 if (mChannelCount == 1 && mReqChannelCount == 1) { 3974 framesOut >>= 1; 3975 } 3976 mResampler->resample(mRsmpOutBuffer, framesOut, this); 3977 // ditherAndClamp() works as long as all buffers returned by mActiveTrack->getNextBuffer() 3978 // are 32 bit aligned which should be always true. 3979 if (mChannelCount == 2 && mReqChannelCount == 1) { 3980 AudioMixer::ditherAndClamp(mRsmpOutBuffer, mRsmpOutBuffer, framesOut); 3981 // the resampler always outputs stereo samples: do post stereo to mono conversion 3982 int16_t *src = (int16_t *)mRsmpOutBuffer; 3983 int16_t *dst = buffer.i16; 3984 while (framesOut--) { 3985 *dst++ = (int16_t)(((int32_t)*src + (int32_t)*(src + 1)) >> 1); 3986 src += 2; 3987 } 3988 } else { 3989 AudioMixer::ditherAndClamp((int32_t *)buffer.raw, mRsmpOutBuffer, framesOut); 3990 } 3991 3992 } 3993 mActiveTrack->releaseBuffer(&buffer); 3994 mActiveTrack->overflow(); 3995 } 3996 // client isn't retrieving buffers fast enough 3997 else { 3998 if (!mActiveTrack->setOverflow()) { 3999 nsecs_t now = systemTime(); 4000 if ((now - lastWarning) > kWarningThrottle) { 4001 LOGW("RecordThread: buffer overflow"); 4002 lastWarning = now; 4003 } 4004 } 4005 // Release the processor for a while before asking for a new buffer. 4006 // This will give the application more chance to read from the buffer and 4007 // clear the overflow. 4008 usleep(kRecordThreadSleepUs); 4009 } 4010 } else { 4011 unlockEffectChains(effectChains); 4012 } 4013 effectChains.clear(); 4014 } 4015 4016 if (!mStandby) { 4017 mInput->stream->common.standby(&mInput->stream->common); 4018 } 4019 mActiveTrack.clear(); 4020 4021 mStartStopCond.broadcast(); 4022 4023 LOGV("RecordThread %p exiting", this); 4024 return false; 4025} 4026 4027 4028sp<AudioFlinger::RecordThread::RecordTrack> AudioFlinger::RecordThread::createRecordTrack_l( 4029 const sp<AudioFlinger::Client>& client, 4030 uint32_t sampleRate, 4031 int format, 4032 int channelMask, 4033 int frameCount, 4034 uint32_t flags, 4035 int sessionId, 4036 status_t *status) 4037{ 4038 sp<RecordTrack> track; 4039 status_t lStatus; 4040 4041 lStatus = initCheck(); 4042 if (lStatus != NO_ERROR) { 4043 LOGE("Audio driver not initialized."); 4044 goto Exit; 4045 } 4046 4047 { // scope for mLock 4048 Mutex::Autolock _l(mLock); 4049 4050 track = new RecordTrack(this, client, sampleRate, 4051 format, channelMask, frameCount, flags, sessionId); 4052 4053 if (track->getCblk() == NULL) { 4054 lStatus = NO_MEMORY; 4055 goto Exit; 4056 } 4057 4058 mTrack = track.get(); 4059 4060 } 4061 lStatus = NO_ERROR; 4062 4063Exit: 4064 if (status) { 4065 *status = lStatus; 4066 } 4067 return track; 4068} 4069 4070status_t AudioFlinger::RecordThread::start(RecordThread::RecordTrack* recordTrack) 4071{ 4072 LOGV("RecordThread::start"); 4073 sp <ThreadBase> strongMe = this; 4074 status_t status = NO_ERROR; 4075 { 4076 AutoMutex lock(&mLock); 4077 if (mActiveTrack != 0) { 4078 if (recordTrack != mActiveTrack.get()) { 4079 status = -EBUSY; 4080 } else if (mActiveTrack->mState == TrackBase::PAUSING) { 4081 mActiveTrack->mState = TrackBase::ACTIVE; 4082 } 4083 return status; 4084 } 4085 4086 recordTrack->mState = TrackBase::IDLE; 4087 mActiveTrack = recordTrack; 4088 mLock.unlock(); 4089 status_t status = AudioSystem::startInput(mId); 4090 mLock.lock(); 4091 if (status != NO_ERROR) { 4092 mActiveTrack.clear(); 4093 return status; 4094 } 4095 mRsmpInIndex = mFrameCount; 4096 mBytesRead = 0; 4097 if (mResampler != NULL) { 4098 mResampler->reset(); 4099 } 4100 mActiveTrack->mState = TrackBase::RESUMING; 4101 // signal thread to start 4102 LOGV("Signal record thread"); 4103 mWaitWorkCV.signal(); 4104 // do not wait for mStartStopCond if exiting 4105 if (mExiting) { 4106 mActiveTrack.clear(); 4107 status = INVALID_OPERATION; 4108 goto startError; 4109 } 4110 mStartStopCond.wait(mLock); 4111 if (mActiveTrack == 0) { 4112 LOGV("Record failed to start"); 4113 status = BAD_VALUE; 4114 goto startError; 4115 } 4116 LOGV("Record started OK"); 4117 return status; 4118 } 4119startError: 4120 AudioSystem::stopInput(mId); 4121 return status; 4122} 4123 4124void AudioFlinger::RecordThread::stop(RecordThread::RecordTrack* recordTrack) { 4125 LOGV("RecordThread::stop"); 4126 sp <ThreadBase> strongMe = this; 4127 { 4128 AutoMutex lock(&mLock); 4129 if (mActiveTrack != 0 && recordTrack == mActiveTrack.get()) { 4130 mActiveTrack->mState = TrackBase::PAUSING; 4131 // do not wait for mStartStopCond if exiting 4132 if (mExiting) { 4133 return; 4134 } 4135 mStartStopCond.wait(mLock); 4136 // if we have been restarted, recordTrack == mActiveTrack.get() here 4137 if (mActiveTrack == 0 || recordTrack != mActiveTrack.get()) { 4138 mLock.unlock(); 4139 AudioSystem::stopInput(mId); 4140 mLock.lock(); 4141 LOGV("Record stopped OK"); 4142 } 4143 } 4144 } 4145} 4146 4147status_t AudioFlinger::RecordThread::dump(int fd, const Vector<String16>& args) 4148{ 4149 const size_t SIZE = 256; 4150 char buffer[SIZE]; 4151 String8 result; 4152 pid_t pid = 0; 4153 4154 snprintf(buffer, SIZE, "\nInput thread %p internals\n", this); 4155 result.append(buffer); 4156 4157 if (mActiveTrack != 0) { 4158 result.append("Active Track:\n"); 4159 result.append(" Clien Fmt Chn mask Session Buf S SRate Serv User\n"); 4160 mActiveTrack->dump(buffer, SIZE); 4161 result.append(buffer); 4162 4163 snprintf(buffer, SIZE, "In index: %d\n", mRsmpInIndex); 4164 result.append(buffer); 4165 snprintf(buffer, SIZE, "In size: %d\n", mInputBytes); 4166 result.append(buffer); 4167 snprintf(buffer, SIZE, "Resampling: %d\n", (mResampler != 0)); 4168 result.append(buffer); 4169 snprintf(buffer, SIZE, "Out channel count: %d\n", mReqChannelCount); 4170 result.append(buffer); 4171 snprintf(buffer, SIZE, "Out sample rate: %d\n", mReqSampleRate); 4172 result.append(buffer); 4173 4174 4175 } else { 4176 result.append("No record client\n"); 4177 } 4178 write(fd, result.string(), result.size()); 4179 4180 dumpBase(fd, args); 4181 4182 return NO_ERROR; 4183} 4184 4185status_t AudioFlinger::RecordThread::getNextBuffer(AudioBufferProvider::Buffer* buffer) 4186{ 4187 size_t framesReq = buffer->frameCount; 4188 size_t framesReady = mFrameCount - mRsmpInIndex; 4189 int channelCount; 4190 4191 if (framesReady == 0) { 4192 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 4193 if (mBytesRead < 0) { 4194 LOGE("RecordThread::getNextBuffer() Error reading audio input"); 4195 if (mActiveTrack->mState == TrackBase::ACTIVE) { 4196 // Force input into standby so that it tries to 4197 // recover at next read attempt 4198 mInput->stream->common.standby(&mInput->stream->common); 4199 usleep(kRecordThreadSleepUs); 4200 } 4201 buffer->raw = 0; 4202 buffer->frameCount = 0; 4203 return NOT_ENOUGH_DATA; 4204 } 4205 mRsmpInIndex = 0; 4206 framesReady = mFrameCount; 4207 } 4208 4209 if (framesReq > framesReady) { 4210 framesReq = framesReady; 4211 } 4212 4213 if (mChannelCount == 1 && mReqChannelCount == 2) { 4214 channelCount = 1; 4215 } else { 4216 channelCount = 2; 4217 } 4218 buffer->raw = mRsmpInBuffer + mRsmpInIndex * channelCount; 4219 buffer->frameCount = framesReq; 4220 return NO_ERROR; 4221} 4222 4223void AudioFlinger::RecordThread::releaseBuffer(AudioBufferProvider::Buffer* buffer) 4224{ 4225 mRsmpInIndex += buffer->frameCount; 4226 buffer->frameCount = 0; 4227} 4228 4229bool AudioFlinger::RecordThread::checkForNewParameters_l() 4230{ 4231 bool reconfig = false; 4232 4233 while (!mNewParameters.isEmpty()) { 4234 status_t status = NO_ERROR; 4235 String8 keyValuePair = mNewParameters[0]; 4236 AudioParameter param = AudioParameter(keyValuePair); 4237 int value; 4238 int reqFormat = mFormat; 4239 int reqSamplingRate = mReqSampleRate; 4240 int reqChannelCount = mReqChannelCount; 4241 4242 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 4243 reqSamplingRate = value; 4244 reconfig = true; 4245 } 4246 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 4247 reqFormat = value; 4248 reconfig = true; 4249 } 4250 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 4251 reqChannelCount = popcount(value); 4252 reconfig = true; 4253 } 4254 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 4255 // do not accept frame count changes if tracks are open as the track buffer 4256 // size depends on frame count and correct behavior would not be garantied 4257 // if frame count is changed after track creation 4258 if (mActiveTrack != 0) { 4259 status = INVALID_OPERATION; 4260 } else { 4261 reconfig = true; 4262 } 4263 } 4264 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 4265 // forward device change to effects that have requested to be 4266 // aware of attached audio device. 4267 for (size_t i = 0; i < mEffectChains.size(); i++) { 4268 mEffectChains[i]->setDevice_l(value); 4269 } 4270 // store input device and output device but do not forward output device to audio HAL. 4271 // Note that status is ignored by the caller for output device 4272 // (see AudioFlinger::setParameters() 4273 if (value & AUDIO_DEVICE_OUT_ALL) { 4274 mDevice &= (uint32_t)~(value & AUDIO_DEVICE_OUT_ALL); 4275 status = BAD_VALUE; 4276 } else { 4277 mDevice &= (uint32_t)~(value & AUDIO_DEVICE_IN_ALL); 4278 } 4279 mDevice |= (uint32_t)value; 4280 } 4281 if (status == NO_ERROR) { 4282 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4283 if (status == INVALID_OPERATION) { 4284 mInput->stream->common.standby(&mInput->stream->common); 4285 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4286 } 4287 if (reconfig) { 4288 if (status == BAD_VALUE && 4289 reqFormat == mInput->stream->common.get_format(&mInput->stream->common) && 4290 reqFormat == AUDIO_FORMAT_PCM_16_BIT && 4291 ((int)mInput->stream->common.get_sample_rate(&mInput->stream->common) <= (2 * reqSamplingRate)) && 4292 (popcount(mInput->stream->common.get_channels(&mInput->stream->common)) < 3) && 4293 (reqChannelCount < 3)) { 4294 status = NO_ERROR; 4295 } 4296 if (status == NO_ERROR) { 4297 readInputParameters(); 4298 sendConfigEvent_l(AudioSystem::INPUT_CONFIG_CHANGED); 4299 } 4300 } 4301 } 4302 4303 mNewParameters.removeAt(0); 4304 4305 mParamStatus = status; 4306 mParamCond.signal(); 4307 mWaitWorkCV.wait(mLock); 4308 } 4309 return reconfig; 4310} 4311 4312String8 AudioFlinger::RecordThread::getParameters(const String8& keys) 4313{ 4314 char *s; 4315 String8 out_s8; 4316 4317 s = mInput->stream->common.get_parameters(&mInput->stream->common, keys.string()); 4318 out_s8 = String8(s); 4319 free(s); 4320 return out_s8; 4321} 4322 4323void AudioFlinger::RecordThread::audioConfigChanged_l(int event, int param) { 4324 AudioSystem::OutputDescriptor desc; 4325 void *param2 = 0; 4326 4327 switch (event) { 4328 case AudioSystem::INPUT_OPENED: 4329 case AudioSystem::INPUT_CONFIG_CHANGED: 4330 desc.channels = mChannelMask; 4331 desc.samplingRate = mSampleRate; 4332 desc.format = mFormat; 4333 desc.frameCount = mFrameCount; 4334 desc.latency = 0; 4335 param2 = &desc; 4336 break; 4337 4338 case AudioSystem::INPUT_CLOSED: 4339 default: 4340 break; 4341 } 4342 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 4343} 4344 4345void AudioFlinger::RecordThread::readInputParameters() 4346{ 4347 if (mRsmpInBuffer) delete mRsmpInBuffer; 4348 if (mRsmpOutBuffer) delete mRsmpOutBuffer; 4349 if (mResampler) delete mResampler; 4350 mResampler = 0; 4351 4352 mSampleRate = mInput->stream->common.get_sample_rate(&mInput->stream->common); 4353 mChannelMask = mInput->stream->common.get_channels(&mInput->stream->common); 4354 mChannelCount = (uint16_t)popcount(mChannelMask); 4355 mFormat = mInput->stream->common.get_format(&mInput->stream->common); 4356 mFrameSize = (uint16_t)audio_stream_frame_size(&mInput->stream->common); 4357 mInputBytes = mInput->stream->common.get_buffer_size(&mInput->stream->common); 4358 mFrameCount = mInputBytes / mFrameSize; 4359 mRsmpInBuffer = new int16_t[mFrameCount * mChannelCount]; 4360 4361 if (mSampleRate != mReqSampleRate && mChannelCount < 3 && mReqChannelCount < 3) 4362 { 4363 int channelCount; 4364 // optmization: if mono to mono, use the resampler in stereo to stereo mode to avoid 4365 // stereo to mono post process as the resampler always outputs stereo. 4366 if (mChannelCount == 1 && mReqChannelCount == 2) { 4367 channelCount = 1; 4368 } else { 4369 channelCount = 2; 4370 } 4371 mResampler = AudioResampler::create(16, channelCount, mReqSampleRate); 4372 mResampler->setSampleRate(mSampleRate); 4373 mResampler->setVolume(AudioMixer::UNITY_GAIN, AudioMixer::UNITY_GAIN); 4374 mRsmpOutBuffer = new int32_t[mFrameCount * 2]; 4375 4376 // optmization: if mono to mono, alter input frame count as if we were inputing stereo samples 4377 if (mChannelCount == 1 && mReqChannelCount == 1) { 4378 mFrameCount >>= 1; 4379 } 4380 4381 } 4382 mRsmpInIndex = mFrameCount; 4383} 4384 4385unsigned int AudioFlinger::RecordThread::getInputFramesLost() 4386{ 4387 return mInput->stream->get_input_frames_lost(mInput->stream); 4388} 4389 4390uint32_t AudioFlinger::RecordThread::hasAudioSession(int sessionId) 4391{ 4392 Mutex::Autolock _l(mLock); 4393 uint32_t result = 0; 4394 if (getEffectChain_l(sessionId) != 0) { 4395 result = EFFECT_SESSION; 4396 } 4397 4398 if (mTrack != NULL && sessionId == mTrack->sessionId()) { 4399 result |= TRACK_SESSION; 4400 } 4401 4402 return result; 4403} 4404 4405// ---------------------------------------------------------------------------- 4406 4407int AudioFlinger::openOutput(uint32_t *pDevices, 4408 uint32_t *pSamplingRate, 4409 uint32_t *pFormat, 4410 uint32_t *pChannels, 4411 uint32_t *pLatencyMs, 4412 uint32_t flags) 4413{ 4414 status_t status; 4415 PlaybackThread *thread = NULL; 4416 mHardwareStatus = AUDIO_HW_OUTPUT_OPEN; 4417 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4418 uint32_t format = pFormat ? *pFormat : 0; 4419 uint32_t channels = pChannels ? *pChannels : 0; 4420 uint32_t latency = pLatencyMs ? *pLatencyMs : 0; 4421 audio_stream_out_t *outStream; 4422 audio_hw_device_t *outHwDev; 4423 4424 LOGV("openOutput(), Device %x, SamplingRate %d, Format %d, Channels %x, flags %x", 4425 pDevices ? *pDevices : 0, 4426 samplingRate, 4427 format, 4428 channels, 4429 flags); 4430 4431 if (pDevices == NULL || *pDevices == 0) { 4432 return 0; 4433 } 4434 4435 Mutex::Autolock _l(mLock); 4436 4437 outHwDev = findSuitableHwDev_l(*pDevices); 4438 if (outHwDev == NULL) 4439 return 0; 4440 4441 status = outHwDev->open_output_stream(outHwDev, *pDevices, (int *)&format, 4442 &channels, &samplingRate, &outStream); 4443 LOGV("openOutput() openOutputStream returned output %p, SamplingRate %d, Format %d, Channels %x, status %d", 4444 outStream, 4445 samplingRate, 4446 format, 4447 channels, 4448 status); 4449 4450 mHardwareStatus = AUDIO_HW_IDLE; 4451 if (outStream != NULL) { 4452 AudioStreamOut *output = new AudioStreamOut(outHwDev, outStream); 4453 int id = nextUniqueId(); 4454 4455 if ((flags & AUDIO_POLICY_OUTPUT_FLAG_DIRECT) || 4456 (format != AUDIO_FORMAT_PCM_16_BIT) || 4457 (channels != AUDIO_CHANNEL_OUT_STEREO)) { 4458 thread = new DirectOutputThread(this, output, id, *pDevices); 4459 LOGV("openOutput() created direct output: ID %d thread %p", id, thread); 4460 } else { 4461 thread = new MixerThread(this, output, id, *pDevices); 4462 LOGV("openOutput() created mixer output: ID %d thread %p", id, thread); 4463 } 4464 mPlaybackThreads.add(id, thread); 4465 4466 if (pSamplingRate) *pSamplingRate = samplingRate; 4467 if (pFormat) *pFormat = format; 4468 if (pChannels) *pChannels = channels; 4469 if (pLatencyMs) *pLatencyMs = thread->latency(); 4470 4471 // notify client processes of the new output creation 4472 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4473 return id; 4474 } 4475 4476 return 0; 4477} 4478 4479int AudioFlinger::openDuplicateOutput(int output1, int output2) 4480{ 4481 Mutex::Autolock _l(mLock); 4482 MixerThread *thread1 = checkMixerThread_l(output1); 4483 MixerThread *thread2 = checkMixerThread_l(output2); 4484 4485 if (thread1 == NULL || thread2 == NULL) { 4486 LOGW("openDuplicateOutput() wrong output mixer type for output %d or %d", output1, output2); 4487 return 0; 4488 } 4489 4490 int id = nextUniqueId(); 4491 DuplicatingThread *thread = new DuplicatingThread(this, thread1, id); 4492 thread->addOutputTrack(thread2); 4493 mPlaybackThreads.add(id, thread); 4494 // notify client processes of the new output creation 4495 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4496 return id; 4497} 4498 4499status_t AudioFlinger::closeOutput(int output) 4500{ 4501 // keep strong reference on the playback thread so that 4502 // it is not destroyed while exit() is executed 4503 sp <PlaybackThread> thread; 4504 { 4505 Mutex::Autolock _l(mLock); 4506 thread = checkPlaybackThread_l(output); 4507 if (thread == NULL) { 4508 return BAD_VALUE; 4509 } 4510 4511 LOGV("closeOutput() %d", output); 4512 4513 if (thread->type() == ThreadBase::MIXER) { 4514 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4515 if (mPlaybackThreads.valueAt(i)->type() == ThreadBase::DUPLICATING) { 4516 DuplicatingThread *dupThread = (DuplicatingThread *)mPlaybackThreads.valueAt(i).get(); 4517 dupThread->removeOutputTrack((MixerThread *)thread.get()); 4518 } 4519 } 4520 } 4521 void *param2 = 0; 4522 audioConfigChanged_l(AudioSystem::OUTPUT_CLOSED, output, param2); 4523 mPlaybackThreads.removeItem(output); 4524 } 4525 thread->exit(); 4526 4527 if (thread->type() != ThreadBase::DUPLICATING) { 4528 AudioStreamOut *out = thread->getOutput(); 4529 out->hwDev->close_output_stream(out->hwDev, out->stream); 4530 delete out; 4531 } 4532 return NO_ERROR; 4533} 4534 4535status_t AudioFlinger::suspendOutput(int output) 4536{ 4537 Mutex::Autolock _l(mLock); 4538 PlaybackThread *thread = checkPlaybackThread_l(output); 4539 4540 if (thread == NULL) { 4541 return BAD_VALUE; 4542 } 4543 4544 LOGV("suspendOutput() %d", output); 4545 thread->suspend(); 4546 4547 return NO_ERROR; 4548} 4549 4550status_t AudioFlinger::restoreOutput(int output) 4551{ 4552 Mutex::Autolock _l(mLock); 4553 PlaybackThread *thread = checkPlaybackThread_l(output); 4554 4555 if (thread == NULL) { 4556 return BAD_VALUE; 4557 } 4558 4559 LOGV("restoreOutput() %d", output); 4560 4561 thread->restore(); 4562 4563 return NO_ERROR; 4564} 4565 4566int AudioFlinger::openInput(uint32_t *pDevices, 4567 uint32_t *pSamplingRate, 4568 uint32_t *pFormat, 4569 uint32_t *pChannels, 4570 uint32_t acoustics) 4571{ 4572 status_t status; 4573 RecordThread *thread = NULL; 4574 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4575 uint32_t format = pFormat ? *pFormat : 0; 4576 uint32_t channels = pChannels ? *pChannels : 0; 4577 uint32_t reqSamplingRate = samplingRate; 4578 uint32_t reqFormat = format; 4579 uint32_t reqChannels = channels; 4580 audio_stream_in_t *inStream; 4581 audio_hw_device_t *inHwDev; 4582 4583 if (pDevices == NULL || *pDevices == 0) { 4584 return 0; 4585 } 4586 4587 Mutex::Autolock _l(mLock); 4588 4589 inHwDev = findSuitableHwDev_l(*pDevices); 4590 if (inHwDev == NULL) 4591 return 0; 4592 4593 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 4594 &channels, &samplingRate, 4595 (audio_in_acoustics_t)acoustics, 4596 &inStream); 4597 LOGV("openInput() openInputStream returned input %p, SamplingRate %d, Format %d, Channels %x, acoustics %x, status %d", 4598 inStream, 4599 samplingRate, 4600 format, 4601 channels, 4602 acoustics, 4603 status); 4604 4605 // If the input could not be opened with the requested parameters and we can handle the conversion internally, 4606 // try to open again with the proposed parameters. The AudioFlinger can resample the input and do mono to stereo 4607 // or stereo to mono conversions on 16 bit PCM inputs. 4608 if (inStream == NULL && status == BAD_VALUE && 4609 reqFormat == format && format == AUDIO_FORMAT_PCM_16_BIT && 4610 (samplingRate <= 2 * reqSamplingRate) && 4611 (popcount(channels) < 3) && (popcount(reqChannels) < 3)) { 4612 LOGV("openInput() reopening with proposed sampling rate and channels"); 4613 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 4614 &channels, &samplingRate, 4615 (audio_in_acoustics_t)acoustics, 4616 &inStream); 4617 } 4618 4619 if (inStream != NULL) { 4620 AudioStreamIn *input = new AudioStreamIn(inHwDev, inStream); 4621 4622 int id = nextUniqueId(); 4623 // Start record thread 4624 // RecorThread require both input and output device indication to forward to audio 4625 // pre processing modules 4626 uint32_t device = (*pDevices) | primaryOutputDevice_l(); 4627 thread = new RecordThread(this, 4628 input, 4629 reqSamplingRate, 4630 reqChannels, 4631 id, 4632 device); 4633 mRecordThreads.add(id, thread); 4634 LOGV("openInput() created record thread: ID %d thread %p", id, thread); 4635 if (pSamplingRate) *pSamplingRate = reqSamplingRate; 4636 if (pFormat) *pFormat = format; 4637 if (pChannels) *pChannels = reqChannels; 4638 4639 input->stream->common.standby(&input->stream->common); 4640 4641 // notify client processes of the new input creation 4642 thread->audioConfigChanged_l(AudioSystem::INPUT_OPENED); 4643 return id; 4644 } 4645 4646 return 0; 4647} 4648 4649status_t AudioFlinger::closeInput(int input) 4650{ 4651 // keep strong reference on the record thread so that 4652 // it is not destroyed while exit() is executed 4653 sp <RecordThread> thread; 4654 { 4655 Mutex::Autolock _l(mLock); 4656 thread = checkRecordThread_l(input); 4657 if (thread == NULL) { 4658 return BAD_VALUE; 4659 } 4660 4661 LOGV("closeInput() %d", input); 4662 void *param2 = 0; 4663 audioConfigChanged_l(AudioSystem::INPUT_CLOSED, input, param2); 4664 mRecordThreads.removeItem(input); 4665 } 4666 thread->exit(); 4667 4668 AudioStreamIn *in = thread->getInput(); 4669 in->hwDev->close_input_stream(in->hwDev, in->stream); 4670 delete in; 4671 4672 return NO_ERROR; 4673} 4674 4675status_t AudioFlinger::setStreamOutput(uint32_t stream, int output) 4676{ 4677 Mutex::Autolock _l(mLock); 4678 MixerThread *dstThread = checkMixerThread_l(output); 4679 if (dstThread == NULL) { 4680 LOGW("setStreamOutput() bad output id %d", output); 4681 return BAD_VALUE; 4682 } 4683 4684 LOGV("setStreamOutput() stream %d to output %d", stream, output); 4685 audioConfigChanged_l(AudioSystem::STREAM_CONFIG_CHANGED, output, &stream); 4686 4687 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4688 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 4689 if (thread != dstThread && 4690 thread->type() != ThreadBase::DIRECT) { 4691 MixerThread *srcThread = (MixerThread *)thread; 4692 srcThread->invalidateTracks(stream); 4693 } 4694 } 4695 4696 return NO_ERROR; 4697} 4698 4699 4700int AudioFlinger::newAudioSessionId() 4701{ 4702 return nextUniqueId(); 4703} 4704 4705// checkPlaybackThread_l() must be called with AudioFlinger::mLock held 4706AudioFlinger::PlaybackThread *AudioFlinger::checkPlaybackThread_l(int output) const 4707{ 4708 PlaybackThread *thread = NULL; 4709 if (mPlaybackThreads.indexOfKey(output) >= 0) { 4710 thread = (PlaybackThread *)mPlaybackThreads.valueFor(output).get(); 4711 } 4712 return thread; 4713} 4714 4715// checkMixerThread_l() must be called with AudioFlinger::mLock held 4716AudioFlinger::MixerThread *AudioFlinger::checkMixerThread_l(int output) const 4717{ 4718 PlaybackThread *thread = checkPlaybackThread_l(output); 4719 if (thread != NULL) { 4720 if (thread->type() == ThreadBase::DIRECT) { 4721 thread = NULL; 4722 } 4723 } 4724 return (MixerThread *)thread; 4725} 4726 4727// checkRecordThread_l() must be called with AudioFlinger::mLock held 4728AudioFlinger::RecordThread *AudioFlinger::checkRecordThread_l(int input) const 4729{ 4730 RecordThread *thread = NULL; 4731 if (mRecordThreads.indexOfKey(input) >= 0) { 4732 thread = (RecordThread *)mRecordThreads.valueFor(input).get(); 4733 } 4734 return thread; 4735} 4736 4737uint32_t AudioFlinger::nextUniqueId() 4738{ 4739 return android_atomic_inc(&mNextUniqueId); 4740} 4741 4742AudioFlinger::PlaybackThread *AudioFlinger::primaryPlaybackThread_l() 4743{ 4744 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4745 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 4746 if (thread->getOutput()->hwDev == mPrimaryHardwareDev) { 4747 return thread; 4748 } 4749 } 4750 return NULL; 4751} 4752 4753uint32_t AudioFlinger::primaryOutputDevice_l() 4754{ 4755 PlaybackThread *thread = primaryPlaybackThread_l(); 4756 4757 if (thread == NULL) { 4758 return 0; 4759 } 4760 4761 return thread->device(); 4762} 4763 4764 4765// ---------------------------------------------------------------------------- 4766// Effect management 4767// ---------------------------------------------------------------------------- 4768 4769 4770status_t AudioFlinger::queryNumberEffects(uint32_t *numEffects) 4771{ 4772 Mutex::Autolock _l(mLock); 4773 return EffectQueryNumberEffects(numEffects); 4774} 4775 4776status_t AudioFlinger::queryEffect(uint32_t index, effect_descriptor_t *descriptor) 4777{ 4778 Mutex::Autolock _l(mLock); 4779 return EffectQueryEffect(index, descriptor); 4780} 4781 4782status_t AudioFlinger::getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor) 4783{ 4784 Mutex::Autolock _l(mLock); 4785 return EffectGetDescriptor(pUuid, descriptor); 4786} 4787 4788 4789// this UUID must match the one defined in media/libeffects/EffectVisualizer.cpp 4790static const effect_uuid_t VISUALIZATION_UUID_ = 4791 {0xd069d9e0, 0x8329, 0x11df, 0x9168, {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}}; 4792 4793sp<IEffect> AudioFlinger::createEffect(pid_t pid, 4794 effect_descriptor_t *pDesc, 4795 const sp<IEffectClient>& effectClient, 4796 int32_t priority, 4797 int io, 4798 int sessionId, 4799 status_t *status, 4800 int *id, 4801 int *enabled) 4802{ 4803 status_t lStatus = NO_ERROR; 4804 sp<EffectHandle> handle; 4805 effect_descriptor_t desc; 4806 sp<Client> client; 4807 wp<Client> wclient; 4808 4809 LOGV("createEffect pid %d, client %p, priority %d, sessionId %d, io %d", 4810 pid, effectClient.get(), priority, sessionId, io); 4811 4812 if (pDesc == NULL) { 4813 lStatus = BAD_VALUE; 4814 goto Exit; 4815 } 4816 4817 // check audio settings permission for global effects 4818 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && !settingsAllowed()) { 4819 lStatus = PERMISSION_DENIED; 4820 goto Exit; 4821 } 4822 4823 // Session AUDIO_SESSION_OUTPUT_STAGE is reserved for output stage effects 4824 // that can only be created by audio policy manager (running in same process) 4825 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE && getpid() != pid) { 4826 lStatus = PERMISSION_DENIED; 4827 goto Exit; 4828 } 4829 4830 // check recording permission for visualizer 4831 if ((memcmp(&pDesc->type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0 || 4832 memcmp(&pDesc->uuid, &VISUALIZATION_UUID_, sizeof(effect_uuid_t)) == 0) && 4833 !recordingAllowed()) { 4834 lStatus = PERMISSION_DENIED; 4835 goto Exit; 4836 } 4837 4838 if (io == 0) { 4839 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE) { 4840 // output must be specified by AudioPolicyManager when using session 4841 // AUDIO_SESSION_OUTPUT_STAGE 4842 lStatus = BAD_VALUE; 4843 goto Exit; 4844 } else if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 4845 // if the output returned by getOutputForEffect() is removed before we lock the 4846 // mutex below, the call to checkPlaybackThread_l(io) below will detect it 4847 // and we will exit safely 4848 io = AudioSystem::getOutputForEffect(&desc); 4849 } 4850 } 4851 4852 { 4853 Mutex::Autolock _l(mLock); 4854 4855 4856 if (!EffectIsNullUuid(&pDesc->uuid)) { 4857 // if uuid is specified, request effect descriptor 4858 lStatus = EffectGetDescriptor(&pDesc->uuid, &desc); 4859 if (lStatus < 0) { 4860 LOGW("createEffect() error %d from EffectGetDescriptor", lStatus); 4861 goto Exit; 4862 } 4863 } else { 4864 // if uuid is not specified, look for an available implementation 4865 // of the required type in effect factory 4866 if (EffectIsNullUuid(&pDesc->type)) { 4867 LOGW("createEffect() no effect type"); 4868 lStatus = BAD_VALUE; 4869 goto Exit; 4870 } 4871 uint32_t numEffects = 0; 4872 effect_descriptor_t d; 4873 bool found = false; 4874 4875 lStatus = EffectQueryNumberEffects(&numEffects); 4876 if (lStatus < 0) { 4877 LOGW("createEffect() error %d from EffectQueryNumberEffects", lStatus); 4878 goto Exit; 4879 } 4880 for (uint32_t i = 0; i < numEffects; i++) { 4881 lStatus = EffectQueryEffect(i, &desc); 4882 if (lStatus < 0) { 4883 LOGW("createEffect() error %d from EffectQueryEffect", lStatus); 4884 continue; 4885 } 4886 if (memcmp(&desc.type, &pDesc->type, sizeof(effect_uuid_t)) == 0) { 4887 // If matching type found save effect descriptor. If the session is 4888 // 0 and the effect is not auxiliary, continue enumeration in case 4889 // an auxiliary version of this effect type is available 4890 found = true; 4891 memcpy(&d, &desc, sizeof(effect_descriptor_t)); 4892 if (sessionId != AUDIO_SESSION_OUTPUT_MIX || 4893 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 4894 break; 4895 } 4896 } 4897 } 4898 if (!found) { 4899 lStatus = BAD_VALUE; 4900 LOGW("createEffect() effect not found"); 4901 goto Exit; 4902 } 4903 // For same effect type, chose auxiliary version over insert version if 4904 // connect to output mix (Compliance to OpenSL ES) 4905 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && 4906 (d.flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_AUXILIARY) { 4907 memcpy(&desc, &d, sizeof(effect_descriptor_t)); 4908 } 4909 } 4910 4911 // Do not allow auxiliary effects on a session different from 0 (output mix) 4912 if (sessionId != AUDIO_SESSION_OUTPUT_MIX && 4913 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 4914 lStatus = INVALID_OPERATION; 4915 goto Exit; 4916 } 4917 4918 // return effect descriptor 4919 memcpy(pDesc, &desc, sizeof(effect_descriptor_t)); 4920 4921 // If output is not specified try to find a matching audio session ID in one of the 4922 // output threads. 4923 // If output is 0 here, sessionId is neither SESSION_OUTPUT_STAGE nor SESSION_OUTPUT_MIX 4924 // because of code checking output when entering the function. 4925 // Note: io is never 0 when creating an effect on an input 4926 if (io == 0) { 4927 // look for the thread where the specified audio session is present 4928 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4929 if (mPlaybackThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 4930 io = mPlaybackThreads.keyAt(i); 4931 break; 4932 } 4933 } 4934 if (io == 0) { 4935 for (size_t i = 0; i < mRecordThreads.size(); i++) { 4936 if (mRecordThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 4937 io = mRecordThreads.keyAt(i); 4938 break; 4939 } 4940 } 4941 } 4942 // If no output thread contains the requested session ID, default to 4943 // first output. The effect chain will be moved to the correct output 4944 // thread when a track with the same session ID is created 4945 if (io == 0 && mPlaybackThreads.size()) { 4946 io = mPlaybackThreads.keyAt(0); 4947 } 4948 LOGV("createEffect() got io %d for effect %s", io, desc.name); 4949 } 4950 ThreadBase *thread = checkRecordThread_l(io); 4951 if (thread == NULL) { 4952 thread = checkPlaybackThread_l(io); 4953 if (thread == NULL) { 4954 LOGE("createEffect() unknown output thread"); 4955 lStatus = BAD_VALUE; 4956 goto Exit; 4957 } 4958 } 4959 4960 wclient = mClients.valueFor(pid); 4961 4962 if (wclient != NULL) { 4963 client = wclient.promote(); 4964 } else { 4965 client = new Client(this, pid); 4966 mClients.add(pid, client); 4967 } 4968 4969 // create effect on selected output trhead 4970 handle = thread->createEffect_l(client, effectClient, priority, sessionId, 4971 &desc, enabled, &lStatus); 4972 if (handle != 0 && id != NULL) { 4973 *id = handle->id(); 4974 } 4975 } 4976 4977Exit: 4978 if(status) { 4979 *status = lStatus; 4980 } 4981 return handle; 4982} 4983 4984status_t AudioFlinger::moveEffects(int session, int srcOutput, int dstOutput) 4985{ 4986 LOGV("moveEffects() session %d, srcOutput %d, dstOutput %d", 4987 session, srcOutput, dstOutput); 4988 Mutex::Autolock _l(mLock); 4989 if (srcOutput == dstOutput) { 4990 LOGW("moveEffects() same dst and src outputs %d", dstOutput); 4991 return NO_ERROR; 4992 } 4993 PlaybackThread *srcThread = checkPlaybackThread_l(srcOutput); 4994 if (srcThread == NULL) { 4995 LOGW("moveEffects() bad srcOutput %d", srcOutput); 4996 return BAD_VALUE; 4997 } 4998 PlaybackThread *dstThread = checkPlaybackThread_l(dstOutput); 4999 if (dstThread == NULL) { 5000 LOGW("moveEffects() bad dstOutput %d", dstOutput); 5001 return BAD_VALUE; 5002 } 5003 5004 Mutex::Autolock _dl(dstThread->mLock); 5005 Mutex::Autolock _sl(srcThread->mLock); 5006 moveEffectChain_l(session, srcThread, dstThread, false); 5007 5008 return NO_ERROR; 5009} 5010 5011// moveEffectChain_l mustbe called with both srcThread and dstThread mLocks held 5012status_t AudioFlinger::moveEffectChain_l(int session, 5013 AudioFlinger::PlaybackThread *srcThread, 5014 AudioFlinger::PlaybackThread *dstThread, 5015 bool reRegister) 5016{ 5017 LOGV("moveEffectChain_l() session %d from thread %p to thread %p", 5018 session, srcThread, dstThread); 5019 5020 sp<EffectChain> chain = srcThread->getEffectChain_l(session); 5021 if (chain == 0) { 5022 LOGW("moveEffectChain_l() effect chain for session %d not on source thread %p", 5023 session, srcThread); 5024 return INVALID_OPERATION; 5025 } 5026 5027 // remove chain first. This is useful only if reconfiguring effect chain on same output thread, 5028 // so that a new chain is created with correct parameters when first effect is added. This is 5029 // otherwise unecessary as removeEffect_l() will remove the chain when last effect is 5030 // removed. 5031 srcThread->removeEffectChain_l(chain); 5032 5033 // transfer all effects one by one so that new effect chain is created on new thread with 5034 // correct buffer sizes and audio parameters and effect engines reconfigured accordingly 5035 int dstOutput = dstThread->id(); 5036 sp<EffectChain> dstChain; 5037 uint32_t strategy; 5038 sp<EffectModule> effect = chain->getEffectFromId_l(0); 5039 while (effect != 0) { 5040 srcThread->removeEffect_l(effect); 5041 dstThread->addEffect_l(effect); 5042 // if the move request is not received from audio policy manager, the effect must be 5043 // re-registered with the new strategy and output 5044 if (dstChain == 0) { 5045 dstChain = effect->chain().promote(); 5046 if (dstChain == 0) { 5047 LOGW("moveEffectChain_l() cannot get chain from effect %p", effect.get()); 5048 srcThread->addEffect_l(effect); 5049 return NO_INIT; 5050 } 5051 strategy = dstChain->strategy(); 5052 } 5053 if (reRegister) { 5054 AudioSystem::unregisterEffect(effect->id()); 5055 AudioSystem::registerEffect(&effect->desc(), 5056 dstOutput, 5057 strategy, 5058 session, 5059 effect->id()); 5060 } 5061 effect = chain->getEffectFromId_l(0); 5062 } 5063 5064 return NO_ERROR; 5065} 5066 5067 5068// PlaybackThread::createEffect_l() must be called with AudioFlinger::mLock held 5069sp<AudioFlinger::EffectHandle> AudioFlinger::ThreadBase::createEffect_l( 5070 const sp<AudioFlinger::Client>& client, 5071 const sp<IEffectClient>& effectClient, 5072 int32_t priority, 5073 int sessionId, 5074 effect_descriptor_t *desc, 5075 int *enabled, 5076 status_t *status 5077 ) 5078{ 5079 sp<EffectModule> effect; 5080 sp<EffectHandle> handle; 5081 status_t lStatus; 5082 sp<EffectChain> chain; 5083 bool chainCreated = false; 5084 bool effectCreated = false; 5085 bool effectRegistered = false; 5086 5087 lStatus = initCheck(); 5088 if (lStatus != NO_ERROR) { 5089 LOGW("createEffect_l() Audio driver not initialized."); 5090 goto Exit; 5091 } 5092 5093 // Do not allow effects with session ID 0 on direct output or duplicating threads 5094 // TODO: add rule for hw accelerated effects on direct outputs with non PCM format 5095 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && mType != MIXER) { 5096 LOGW("createEffect_l() Cannot add auxiliary effect %s to session %d", 5097 desc->name, sessionId); 5098 lStatus = BAD_VALUE; 5099 goto Exit; 5100 } 5101 // Only Pre processor effects are allowed on input threads and only on input threads 5102 if ((mType == RECORD && 5103 (desc->flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_PRE_PROC) || 5104 (mType != RECORD && 5105 (desc->flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC)) { 5106 LOGW("createEffect_l() effect %s (flags %08x) created on wrong thread type %d", 5107 desc->name, desc->flags, mType); 5108 lStatus = BAD_VALUE; 5109 goto Exit; 5110 } 5111 5112 LOGV("createEffect_l() thread %p effect %s on session %d", this, desc->name, sessionId); 5113 5114 { // scope for mLock 5115 Mutex::Autolock _l(mLock); 5116 5117 // check for existing effect chain with the requested audio session 5118 chain = getEffectChain_l(sessionId); 5119 if (chain == 0) { 5120 // create a new chain for this session 5121 LOGV("createEffect_l() new effect chain for session %d", sessionId); 5122 chain = new EffectChain(this, sessionId); 5123 addEffectChain_l(chain); 5124 chain->setStrategy(getStrategyForSession_l(sessionId)); 5125 chainCreated = true; 5126 } else { 5127 effect = chain->getEffectFromDesc_l(desc); 5128 } 5129 5130 LOGV("createEffect_l() got effect %p on chain %p", effect == 0 ? 0 : effect.get(), chain.get()); 5131 5132 if (effect == 0) { 5133 int id = mAudioFlinger->nextUniqueId(); 5134 // Check CPU and memory usage 5135 lStatus = AudioSystem::registerEffect(desc, mId, chain->strategy(), sessionId, id); 5136 if (lStatus != NO_ERROR) { 5137 goto Exit; 5138 } 5139 effectRegistered = true; 5140 // create a new effect module if none present in the chain 5141 effect = new EffectModule(this, chain, desc, id, sessionId); 5142 lStatus = effect->status(); 5143 if (lStatus != NO_ERROR) { 5144 goto Exit; 5145 } 5146 lStatus = chain->addEffect_l(effect); 5147 if (lStatus != NO_ERROR) { 5148 goto Exit; 5149 } 5150 effectCreated = true; 5151 5152 effect->setDevice(mDevice); 5153 effect->setMode(mAudioFlinger->getMode()); 5154 } 5155 // create effect handle and connect it to effect module 5156 handle = new EffectHandle(effect, client, effectClient, priority); 5157 lStatus = effect->addHandle(handle); 5158 if (enabled) { 5159 *enabled = (int)effect->isEnabled(); 5160 } 5161 } 5162 5163Exit: 5164 if (lStatus != NO_ERROR && lStatus != ALREADY_EXISTS) { 5165 Mutex::Autolock _l(mLock); 5166 if (effectCreated) { 5167 chain->removeEffect_l(effect); 5168 } 5169 if (effectRegistered) { 5170 AudioSystem::unregisterEffect(effect->id()); 5171 } 5172 if (chainCreated) { 5173 removeEffectChain_l(chain); 5174 } 5175 handle.clear(); 5176 } 5177 5178 if(status) { 5179 *status = lStatus; 5180 } 5181 return handle; 5182} 5183 5184sp<AudioFlinger::EffectModule> AudioFlinger::ThreadBase::getEffect_l(int sessionId, int effectId) 5185{ 5186 sp<EffectModule> effect; 5187 5188 sp<EffectChain> chain = getEffectChain_l(sessionId); 5189 if (chain != 0) { 5190 effect = chain->getEffectFromId_l(effectId); 5191 } 5192 return effect; 5193} 5194 5195// PlaybackThread::addEffect_l() must be called with AudioFlinger::mLock and 5196// PlaybackThread::mLock held 5197status_t AudioFlinger::ThreadBase::addEffect_l(const sp<EffectModule>& effect) 5198{ 5199 // check for existing effect chain with the requested audio session 5200 int sessionId = effect->sessionId(); 5201 sp<EffectChain> chain = getEffectChain_l(sessionId); 5202 bool chainCreated = false; 5203 5204 if (chain == 0) { 5205 // create a new chain for this session 5206 LOGV("addEffect_l() new effect chain for session %d", sessionId); 5207 chain = new EffectChain(this, sessionId); 5208 addEffectChain_l(chain); 5209 chain->setStrategy(getStrategyForSession_l(sessionId)); 5210 chainCreated = true; 5211 } 5212 LOGV("addEffect_l() %p chain %p effect %p", this, chain.get(), effect.get()); 5213 5214 if (chain->getEffectFromId_l(effect->id()) != 0) { 5215 LOGW("addEffect_l() %p effect %s already present in chain %p", 5216 this, effect->desc().name, chain.get()); 5217 return BAD_VALUE; 5218 } 5219 5220 status_t status = chain->addEffect_l(effect); 5221 if (status != NO_ERROR) { 5222 if (chainCreated) { 5223 removeEffectChain_l(chain); 5224 } 5225 return status; 5226 } 5227 5228 effect->setDevice(mDevice); 5229 effect->setMode(mAudioFlinger->getMode()); 5230 return NO_ERROR; 5231} 5232 5233void AudioFlinger::ThreadBase::removeEffect_l(const sp<EffectModule>& effect) { 5234 5235 LOGV("removeEffect_l() %p effect %p", this, effect.get()); 5236 effect_descriptor_t desc = effect->desc(); 5237 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5238 detachAuxEffect_l(effect->id()); 5239 } 5240 5241 sp<EffectChain> chain = effect->chain().promote(); 5242 if (chain != 0) { 5243 // remove effect chain if removing last effect 5244 if (chain->removeEffect_l(effect) == 0) { 5245 removeEffectChain_l(chain); 5246 } 5247 } else { 5248 LOGW("removeEffect_l() %p cannot promote chain for effect %p", this, effect.get()); 5249 } 5250} 5251 5252void AudioFlinger::ThreadBase::lockEffectChains_l( 5253 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5254{ 5255 effectChains = mEffectChains; 5256 for (size_t i = 0; i < mEffectChains.size(); i++) { 5257 mEffectChains[i]->lock(); 5258 } 5259} 5260 5261void AudioFlinger::ThreadBase::unlockEffectChains( 5262 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5263{ 5264 for (size_t i = 0; i < effectChains.size(); i++) { 5265 effectChains[i]->unlock(); 5266 } 5267} 5268 5269sp<AudioFlinger::EffectChain> AudioFlinger::ThreadBase::getEffectChain(int sessionId) 5270{ 5271 Mutex::Autolock _l(mLock); 5272 return getEffectChain_l(sessionId); 5273} 5274 5275sp<AudioFlinger::EffectChain> AudioFlinger::ThreadBase::getEffectChain_l(int sessionId) 5276{ 5277 sp<EffectChain> chain; 5278 5279 size_t size = mEffectChains.size(); 5280 for (size_t i = 0; i < size; i++) { 5281 if (mEffectChains[i]->sessionId() == sessionId) { 5282 chain = mEffectChains[i]; 5283 break; 5284 } 5285 } 5286 return chain; 5287} 5288 5289void AudioFlinger::ThreadBase::setMode(uint32_t mode) 5290{ 5291 Mutex::Autolock _l(mLock); 5292 size_t size = mEffectChains.size(); 5293 for (size_t i = 0; i < size; i++) { 5294 mEffectChains[i]->setMode_l(mode); 5295 } 5296} 5297 5298void AudioFlinger::ThreadBase::disconnectEffect(const sp<EffectModule>& effect, 5299 const wp<EffectHandle>& handle) { 5300 Mutex::Autolock _l(mLock); 5301 LOGV("disconnectEffect() %p effect %p", this, effect.get()); 5302 // delete the effect module if removing last handle on it 5303 if (effect->removeHandle(handle) == 0) { 5304 removeEffect_l(effect); 5305 AudioSystem::unregisterEffect(effect->id()); 5306 } 5307} 5308 5309status_t AudioFlinger::PlaybackThread::addEffectChain_l(const sp<EffectChain>& chain) 5310{ 5311 int session = chain->sessionId(); 5312 int16_t *buffer = mMixBuffer; 5313 bool ownsBuffer = false; 5314 5315 LOGV("addEffectChain_l() %p on thread %p for session %d", chain.get(), this, session); 5316 if (session > 0) { 5317 // Only one effect chain can be present in direct output thread and it uses 5318 // the mix buffer as input 5319 if (mType != DIRECT) { 5320 size_t numSamples = mFrameCount * mChannelCount; 5321 buffer = new int16_t[numSamples]; 5322 memset(buffer, 0, numSamples * sizeof(int16_t)); 5323 LOGV("addEffectChain_l() creating new input buffer %p session %d", buffer, session); 5324 ownsBuffer = true; 5325 } 5326 5327 // Attach all tracks with same session ID to this chain. 5328 for (size_t i = 0; i < mTracks.size(); ++i) { 5329 sp<Track> track = mTracks[i]; 5330 if (session == track->sessionId()) { 5331 LOGV("addEffectChain_l() track->setMainBuffer track %p buffer %p", track.get(), buffer); 5332 track->setMainBuffer(buffer); 5333 chain->incTrackCnt(); 5334 } 5335 } 5336 5337 // indicate all active tracks in the chain 5338 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5339 sp<Track> track = mActiveTracks[i].promote(); 5340 if (track == 0) continue; 5341 if (session == track->sessionId()) { 5342 LOGV("addEffectChain_l() activating track %p on session %d", track.get(), session); 5343 chain->incActiveTrackCnt(); 5344 } 5345 } 5346 } 5347 5348 chain->setInBuffer(buffer, ownsBuffer); 5349 chain->setOutBuffer(mMixBuffer); 5350 // Effect chain for session AUDIO_SESSION_OUTPUT_STAGE is inserted at end of effect 5351 // chains list in order to be processed last as it contains output stage effects 5352 // Effect chain for session AUDIO_SESSION_OUTPUT_MIX is inserted before 5353 // session AUDIO_SESSION_OUTPUT_STAGE to be processed 5354 // after track specific effects and before output stage 5355 // It is therefore mandatory that AUDIO_SESSION_OUTPUT_MIX == 0 and 5356 // that AUDIO_SESSION_OUTPUT_STAGE < AUDIO_SESSION_OUTPUT_MIX 5357 // Effect chain for other sessions are inserted at beginning of effect 5358 // chains list to be processed before output mix effects. Relative order between other 5359 // sessions is not important 5360 size_t size = mEffectChains.size(); 5361 size_t i = 0; 5362 for (i = 0; i < size; i++) { 5363 if (mEffectChains[i]->sessionId() < session) break; 5364 } 5365 mEffectChains.insertAt(chain, i); 5366 5367 return NO_ERROR; 5368} 5369 5370size_t AudioFlinger::PlaybackThread::removeEffectChain_l(const sp<EffectChain>& chain) 5371{ 5372 int session = chain->sessionId(); 5373 5374 LOGV("removeEffectChain_l() %p from thread %p for session %d", chain.get(), this, session); 5375 5376 for (size_t i = 0; i < mEffectChains.size(); i++) { 5377 if (chain == mEffectChains[i]) { 5378 mEffectChains.removeAt(i); 5379 // detach all active tracks from the chain 5380 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5381 sp<Track> track = mActiveTracks[i].promote(); 5382 if (track == 0) continue; 5383 if (session == track->sessionId()) { 5384 LOGV("removeEffectChain_l(): stopping track on chain %p for session Id: %d", 5385 chain.get(), session); 5386 chain->decActiveTrackCnt(); 5387 } 5388 } 5389 5390 // detach all tracks with same session ID from this chain 5391 for (size_t i = 0; i < mTracks.size(); ++i) { 5392 sp<Track> track = mTracks[i]; 5393 if (session == track->sessionId()) { 5394 track->setMainBuffer(mMixBuffer); 5395 chain->decTrackCnt(); 5396 } 5397 } 5398 break; 5399 } 5400 } 5401 return mEffectChains.size(); 5402} 5403 5404status_t AudioFlinger::PlaybackThread::attachAuxEffect( 5405 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5406{ 5407 Mutex::Autolock _l(mLock); 5408 return attachAuxEffect_l(track, EffectId); 5409} 5410 5411status_t AudioFlinger::PlaybackThread::attachAuxEffect_l( 5412 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5413{ 5414 status_t status = NO_ERROR; 5415 5416 if (EffectId == 0) { 5417 track->setAuxBuffer(0, NULL); 5418 } else { 5419 // Auxiliary effects are always in audio session AUDIO_SESSION_OUTPUT_MIX 5420 sp<EffectModule> effect = getEffect_l(AUDIO_SESSION_OUTPUT_MIX, EffectId); 5421 if (effect != 0) { 5422 if ((effect->desc().flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5423 track->setAuxBuffer(EffectId, (int32_t *)effect->inBuffer()); 5424 } else { 5425 status = INVALID_OPERATION; 5426 } 5427 } else { 5428 status = BAD_VALUE; 5429 } 5430 } 5431 return status; 5432} 5433 5434void AudioFlinger::PlaybackThread::detachAuxEffect_l(int effectId) 5435{ 5436 for (size_t i = 0; i < mTracks.size(); ++i) { 5437 sp<Track> track = mTracks[i]; 5438 if (track->auxEffectId() == effectId) { 5439 attachAuxEffect_l(track, 0); 5440 } 5441 } 5442} 5443 5444status_t AudioFlinger::RecordThread::addEffectChain_l(const sp<EffectChain>& chain) 5445{ 5446 // only one chain per input thread 5447 if (mEffectChains.size() != 0) { 5448 return INVALID_OPERATION; 5449 } 5450 LOGV("addEffectChain_l() %p on thread %p", chain.get(), this); 5451 5452 chain->setInBuffer(NULL); 5453 chain->setOutBuffer(NULL); 5454 5455 mEffectChains.add(chain); 5456 5457 return NO_ERROR; 5458} 5459 5460size_t AudioFlinger::RecordThread::removeEffectChain_l(const sp<EffectChain>& chain) 5461{ 5462 LOGV("removeEffectChain_l() %p from thread %p", chain.get(), this); 5463 LOGW_IF(mEffectChains.size() != 1, 5464 "removeEffectChain_l() %p invalid chain size %d on thread %p", 5465 chain.get(), mEffectChains.size(), this); 5466 if (mEffectChains.size() == 1) { 5467 mEffectChains.removeAt(0); 5468 } 5469 return 0; 5470} 5471 5472// ---------------------------------------------------------------------------- 5473// EffectModule implementation 5474// ---------------------------------------------------------------------------- 5475 5476#undef LOG_TAG 5477#define LOG_TAG "AudioFlinger::EffectModule" 5478 5479AudioFlinger::EffectModule::EffectModule(const wp<ThreadBase>& wThread, 5480 const wp<AudioFlinger::EffectChain>& chain, 5481 effect_descriptor_t *desc, 5482 int id, 5483 int sessionId) 5484 : mThread(wThread), mChain(chain), mId(id), mSessionId(sessionId), mEffectInterface(NULL), 5485 mStatus(NO_INIT), mState(IDLE) 5486{ 5487 LOGV("Constructor %p", this); 5488 int lStatus; 5489 sp<ThreadBase> thread = mThread.promote(); 5490 if (thread == 0) { 5491 return; 5492 } 5493 5494 memcpy(&mDescriptor, desc, sizeof(effect_descriptor_t)); 5495 5496 // create effect engine from effect factory 5497 mStatus = EffectCreate(&desc->uuid, sessionId, thread->id(), &mEffectInterface); 5498 5499 if (mStatus != NO_ERROR) { 5500 return; 5501 } 5502 lStatus = init(); 5503 if (lStatus < 0) { 5504 mStatus = lStatus; 5505 goto Error; 5506 } 5507 5508 LOGV("Constructor success name %s, Interface %p", mDescriptor.name, mEffectInterface); 5509 return; 5510Error: 5511 EffectRelease(mEffectInterface); 5512 mEffectInterface = NULL; 5513 LOGV("Constructor Error %d", mStatus); 5514} 5515 5516AudioFlinger::EffectModule::~EffectModule() 5517{ 5518 LOGV("Destructor %p", this); 5519 if (mEffectInterface != NULL) { 5520 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 5521 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC) { 5522 sp<ThreadBase> thread = mThread.promote(); 5523 if (thread != 0) { 5524 thread->stream()->remove_audio_effect(thread->stream(), mEffectInterface); 5525 } 5526 } 5527 // release effect engine 5528 EffectRelease(mEffectInterface); 5529 } 5530} 5531 5532status_t AudioFlinger::EffectModule::addHandle(sp<EffectHandle>& handle) 5533{ 5534 status_t status; 5535 5536 Mutex::Autolock _l(mLock); 5537 // First handle in mHandles has highest priority and controls the effect module 5538 int priority = handle->priority(); 5539 size_t size = mHandles.size(); 5540 sp<EffectHandle> h; 5541 size_t i; 5542 for (i = 0; i < size; i++) { 5543 h = mHandles[i].promote(); 5544 if (h == 0) continue; 5545 if (h->priority() <= priority) break; 5546 } 5547 // if inserted in first place, move effect control from previous owner to this handle 5548 if (i == 0) { 5549 if (h != 0) { 5550 h->setControl(false, true); 5551 } 5552 handle->setControl(true, false); 5553 status = NO_ERROR; 5554 } else { 5555 status = ALREADY_EXISTS; 5556 } 5557 mHandles.insertAt(handle, i); 5558 return status; 5559} 5560 5561size_t AudioFlinger::EffectModule::removeHandle(const wp<EffectHandle>& handle) 5562{ 5563 Mutex::Autolock _l(mLock); 5564 size_t size = mHandles.size(); 5565 size_t i; 5566 for (i = 0; i < size; i++) { 5567 if (mHandles[i] == handle) break; 5568 } 5569 if (i == size) { 5570 return size; 5571 } 5572 mHandles.removeAt(i); 5573 size = mHandles.size(); 5574 // if removed from first place, move effect control from this handle to next in line 5575 if (i == 0 && size != 0) { 5576 sp<EffectHandle> h = mHandles[0].promote(); 5577 if (h != 0) { 5578 h->setControl(true, true); 5579 } 5580 } 5581 5582 // Release effect engine here so that it is done immediately. Otherwise it will be released 5583 // by the destructor when the last strong reference on the this object is released which can 5584 // happen after next process is called on this effect. 5585 if (size == 0 && mEffectInterface != NULL) { 5586 // release effect engine 5587 EffectRelease(mEffectInterface); 5588 mEffectInterface = NULL; 5589 } 5590 5591 return size; 5592} 5593 5594void AudioFlinger::EffectModule::disconnect(const wp<EffectHandle>& handle) 5595{ 5596 // keep a strong reference on this EffectModule to avoid calling the 5597 // destructor before we exit 5598 sp<EffectModule> keep(this); 5599 { 5600 sp<ThreadBase> thread = mThread.promote(); 5601 if (thread != 0) { 5602 thread->disconnectEffect(keep, handle); 5603 } 5604 } 5605} 5606 5607void AudioFlinger::EffectModule::updateState() { 5608 Mutex::Autolock _l(mLock); 5609 5610 switch (mState) { 5611 case RESTART: 5612 reset_l(); 5613 // FALL THROUGH 5614 5615 case STARTING: 5616 // clear auxiliary effect input buffer for next accumulation 5617 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5618 memset(mConfig.inputCfg.buffer.raw, 5619 0, 5620 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 5621 } 5622 start_l(); 5623 mState = ACTIVE; 5624 break; 5625 case STOPPING: 5626 stop_l(); 5627 mDisableWaitCnt = mMaxDisableWaitCnt; 5628 mState = STOPPED; 5629 break; 5630 case STOPPED: 5631 // mDisableWaitCnt is forced to 1 by process() when the engine indicates the end of the 5632 // turn off sequence. 5633 if (--mDisableWaitCnt == 0) { 5634 reset_l(); 5635 mState = IDLE; 5636 } 5637 break; 5638 default: //IDLE , ACTIVE 5639 break; 5640 } 5641} 5642 5643void AudioFlinger::EffectModule::process() 5644{ 5645 Mutex::Autolock _l(mLock); 5646 5647 if (mEffectInterface == NULL || 5648 mConfig.inputCfg.buffer.raw == NULL || 5649 mConfig.outputCfg.buffer.raw == NULL) { 5650 return; 5651 } 5652 5653 if (isProcessEnabled()) { 5654 // do 32 bit to 16 bit conversion for auxiliary effect input buffer 5655 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5656 AudioMixer::ditherAndClamp(mConfig.inputCfg.buffer.s32, 5657 mConfig.inputCfg.buffer.s32, 5658 mConfig.inputCfg.buffer.frameCount/2); 5659 } 5660 5661 // do the actual processing in the effect engine 5662 int ret = (*mEffectInterface)->process(mEffectInterface, 5663 &mConfig.inputCfg.buffer, 5664 &mConfig.outputCfg.buffer); 5665 5666 // force transition to IDLE state when engine is ready 5667 if (mState == STOPPED && ret == -ENODATA) { 5668 mDisableWaitCnt = 1; 5669 } 5670 5671 // clear auxiliary effect input buffer for next accumulation 5672 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5673 memset(mConfig.inputCfg.buffer.raw, 0, 5674 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 5675 } 5676 } else if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_INSERT && 5677 mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 5678 // If an insert effect is idle and input buffer is different from output buffer, 5679 // accumulate input onto output 5680 sp<EffectChain> chain = mChain.promote(); 5681 if (chain != 0 && chain->activeTrackCnt() != 0) { 5682 size_t frameCnt = mConfig.inputCfg.buffer.frameCount * 2; //always stereo here 5683 int16_t *in = mConfig.inputCfg.buffer.s16; 5684 int16_t *out = mConfig.outputCfg.buffer.s16; 5685 for (size_t i = 0; i < frameCnt; i++) { 5686 out[i] = clamp16((int32_t)out[i] + (int32_t)in[i]); 5687 } 5688 } 5689 } 5690} 5691 5692void AudioFlinger::EffectModule::reset_l() 5693{ 5694 if (mEffectInterface == NULL) { 5695 return; 5696 } 5697 (*mEffectInterface)->command(mEffectInterface, EFFECT_CMD_RESET, 0, NULL, 0, NULL); 5698} 5699 5700status_t AudioFlinger::EffectModule::configure() 5701{ 5702 uint32_t channels; 5703 if (mEffectInterface == NULL) { 5704 return NO_INIT; 5705 } 5706 5707 sp<ThreadBase> thread = mThread.promote(); 5708 if (thread == 0) { 5709 return DEAD_OBJECT; 5710 } 5711 5712 // TODO: handle configuration of effects replacing track process 5713 if (thread->channelCount() == 1) { 5714 channels = AUDIO_CHANNEL_OUT_MONO; 5715 } else { 5716 channels = AUDIO_CHANNEL_OUT_STEREO; 5717 } 5718 5719 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5720 mConfig.inputCfg.channels = AUDIO_CHANNEL_OUT_MONO; 5721 } else { 5722 mConfig.inputCfg.channels = channels; 5723 } 5724 mConfig.outputCfg.channels = channels; 5725 mConfig.inputCfg.format = AUDIO_FORMAT_PCM_16_BIT; 5726 mConfig.outputCfg.format = AUDIO_FORMAT_PCM_16_BIT; 5727 mConfig.inputCfg.samplingRate = thread->sampleRate(); 5728 mConfig.outputCfg.samplingRate = mConfig.inputCfg.samplingRate; 5729 mConfig.inputCfg.bufferProvider.cookie = NULL; 5730 mConfig.inputCfg.bufferProvider.getBuffer = NULL; 5731 mConfig.inputCfg.bufferProvider.releaseBuffer = NULL; 5732 mConfig.outputCfg.bufferProvider.cookie = NULL; 5733 mConfig.outputCfg.bufferProvider.getBuffer = NULL; 5734 mConfig.outputCfg.bufferProvider.releaseBuffer = NULL; 5735 mConfig.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ; 5736 // Insert effect: 5737 // - in session AUDIO_SESSION_OUTPUT_MIX or AUDIO_SESSION_OUTPUT_STAGE, 5738 // always overwrites output buffer: input buffer == output buffer 5739 // - in other sessions: 5740 // last effect in the chain accumulates in output buffer: input buffer != output buffer 5741 // other effect: overwrites output buffer: input buffer == output buffer 5742 // Auxiliary effect: 5743 // accumulates in output buffer: input buffer != output buffer 5744 // Therefore: accumulate <=> input buffer != output buffer 5745 if (mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 5746 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE; 5747 } else { 5748 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_WRITE; 5749 } 5750 mConfig.inputCfg.mask = EFFECT_CONFIG_ALL; 5751 mConfig.outputCfg.mask = EFFECT_CONFIG_ALL; 5752 mConfig.inputCfg.buffer.frameCount = thread->frameCount(); 5753 mConfig.outputCfg.buffer.frameCount = mConfig.inputCfg.buffer.frameCount; 5754 5755 LOGV("configure() %p thread %p buffer %p framecount %d", 5756 this, thread.get(), mConfig.inputCfg.buffer.raw, mConfig.inputCfg.buffer.frameCount); 5757 5758 status_t cmdStatus; 5759 uint32_t size = sizeof(int); 5760 status_t status = (*mEffectInterface)->command(mEffectInterface, 5761 EFFECT_CMD_CONFIGURE, 5762 sizeof(effect_config_t), 5763 &mConfig, 5764 &size, 5765 &cmdStatus); 5766 if (status == 0) { 5767 status = cmdStatus; 5768 } 5769 5770 mMaxDisableWaitCnt = (MAX_DISABLE_TIME_MS * mConfig.outputCfg.samplingRate) / 5771 (1000 * mConfig.outputCfg.buffer.frameCount); 5772 5773 return status; 5774} 5775 5776status_t AudioFlinger::EffectModule::init() 5777{ 5778 Mutex::Autolock _l(mLock); 5779 if (mEffectInterface == NULL) { 5780 return NO_INIT; 5781 } 5782 status_t cmdStatus; 5783 uint32_t size = sizeof(status_t); 5784 status_t status = (*mEffectInterface)->command(mEffectInterface, 5785 EFFECT_CMD_INIT, 5786 0, 5787 NULL, 5788 &size, 5789 &cmdStatus); 5790 if (status == 0) { 5791 status = cmdStatus; 5792 } 5793 return status; 5794} 5795 5796status_t AudioFlinger::EffectModule::start_l() 5797{ 5798 if (mEffectInterface == NULL) { 5799 return NO_INIT; 5800 } 5801 status_t cmdStatus; 5802 uint32_t size = sizeof(status_t); 5803 status_t status = (*mEffectInterface)->command(mEffectInterface, 5804 EFFECT_CMD_ENABLE, 5805 0, 5806 NULL, 5807 &size, 5808 &cmdStatus); 5809 if (status == 0) { 5810 status = cmdStatus; 5811 } 5812 if (status == 0 && 5813 ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 5814 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC)) { 5815 sp<ThreadBase> thread = mThread.promote(); 5816 if (thread != 0) { 5817 thread->stream()->add_audio_effect(thread->stream(), mEffectInterface); 5818 } 5819 } 5820 return status; 5821} 5822 5823status_t AudioFlinger::EffectModule::stop_l() 5824{ 5825 if (mEffectInterface == NULL) { 5826 return NO_INIT; 5827 } 5828 status_t cmdStatus; 5829 uint32_t size = sizeof(status_t); 5830 status_t status = (*mEffectInterface)->command(mEffectInterface, 5831 EFFECT_CMD_DISABLE, 5832 0, 5833 NULL, 5834 &size, 5835 &cmdStatus); 5836 if (status == 0) { 5837 status = cmdStatus; 5838 } 5839 if (status == 0 && 5840 ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 5841 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC)) { 5842 sp<ThreadBase> thread = mThread.promote(); 5843 if (thread != 0) { 5844 thread->stream()->remove_audio_effect(thread->stream(), mEffectInterface); 5845 } 5846 } 5847 return status; 5848} 5849 5850status_t AudioFlinger::EffectModule::command(uint32_t cmdCode, 5851 uint32_t cmdSize, 5852 void *pCmdData, 5853 uint32_t *replySize, 5854 void *pReplyData) 5855{ 5856 Mutex::Autolock _l(mLock); 5857// LOGV("command(), cmdCode: %d, mEffectInterface: %p", cmdCode, mEffectInterface); 5858 5859 if (mEffectInterface == NULL) { 5860 return NO_INIT; 5861 } 5862 status_t status = (*mEffectInterface)->command(mEffectInterface, 5863 cmdCode, 5864 cmdSize, 5865 pCmdData, 5866 replySize, 5867 pReplyData); 5868 if (cmdCode != EFFECT_CMD_GET_PARAM && status == NO_ERROR) { 5869 uint32_t size = (replySize == NULL) ? 0 : *replySize; 5870 for (size_t i = 1; i < mHandles.size(); i++) { 5871 sp<EffectHandle> h = mHandles[i].promote(); 5872 if (h != 0) { 5873 h->commandExecuted(cmdCode, cmdSize, pCmdData, size, pReplyData); 5874 } 5875 } 5876 } 5877 return status; 5878} 5879 5880status_t AudioFlinger::EffectModule::setEnabled(bool enabled) 5881{ 5882 Mutex::Autolock _l(mLock); 5883 LOGV("setEnabled %p enabled %d", this, enabled); 5884 5885 if (enabled != isEnabled()) { 5886 switch (mState) { 5887 // going from disabled to enabled 5888 case IDLE: 5889 mState = STARTING; 5890 break; 5891 case STOPPED: 5892 mState = RESTART; 5893 break; 5894 case STOPPING: 5895 mState = ACTIVE; 5896 break; 5897 5898 // going from enabled to disabled 5899 case RESTART: 5900 mState = STOPPED; 5901 break; 5902 case STARTING: 5903 mState = IDLE; 5904 break; 5905 case ACTIVE: 5906 mState = STOPPING; 5907 break; 5908 } 5909 for (size_t i = 1; i < mHandles.size(); i++) { 5910 sp<EffectHandle> h = mHandles[i].promote(); 5911 if (h != 0) { 5912 h->setEnabled(enabled); 5913 } 5914 } 5915 } 5916 return NO_ERROR; 5917} 5918 5919bool AudioFlinger::EffectModule::isEnabled() 5920{ 5921 switch (mState) { 5922 case RESTART: 5923 case STARTING: 5924 case ACTIVE: 5925 return true; 5926 case IDLE: 5927 case STOPPING: 5928 case STOPPED: 5929 default: 5930 return false; 5931 } 5932} 5933 5934bool AudioFlinger::EffectModule::isProcessEnabled() 5935{ 5936 switch (mState) { 5937 case RESTART: 5938 case ACTIVE: 5939 case STOPPING: 5940 case STOPPED: 5941 return true; 5942 case IDLE: 5943 case STARTING: 5944 default: 5945 return false; 5946 } 5947} 5948 5949status_t AudioFlinger::EffectModule::setVolume(uint32_t *left, uint32_t *right, bool controller) 5950{ 5951 Mutex::Autolock _l(mLock); 5952 status_t status = NO_ERROR; 5953 5954 // Send volume indication if EFFECT_FLAG_VOLUME_IND is set and read back altered volume 5955 // if controller flag is set (Note that controller == TRUE => EFFECT_FLAG_VOLUME_CTRL set) 5956 if (isProcessEnabled() && 5957 ((mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL || 5958 (mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_IND)) { 5959 status_t cmdStatus; 5960 uint32_t volume[2]; 5961 uint32_t *pVolume = NULL; 5962 uint32_t size = sizeof(volume); 5963 volume[0] = *left; 5964 volume[1] = *right; 5965 if (controller) { 5966 pVolume = volume; 5967 } 5968 status = (*mEffectInterface)->command(mEffectInterface, 5969 EFFECT_CMD_SET_VOLUME, 5970 size, 5971 volume, 5972 &size, 5973 pVolume); 5974 if (controller && status == NO_ERROR && size == sizeof(volume)) { 5975 *left = volume[0]; 5976 *right = volume[1]; 5977 } 5978 } 5979 return status; 5980} 5981 5982status_t AudioFlinger::EffectModule::setDevice(uint32_t device) 5983{ 5984 Mutex::Autolock _l(mLock); 5985 status_t status = NO_ERROR; 5986 if (device && (mDescriptor.flags & EFFECT_FLAG_DEVICE_MASK) == EFFECT_FLAG_DEVICE_IND) { 5987 // audio pre processing modules on RecordThread can receive both output and 5988 // input device indication in the same call 5989 uint32_t dev = device & AUDIO_DEVICE_OUT_ALL; 5990 if (dev) { 5991 status_t cmdStatus; 5992 uint32_t size = sizeof(status_t); 5993 5994 status = (*mEffectInterface)->command(mEffectInterface, 5995 EFFECT_CMD_SET_DEVICE, 5996 sizeof(uint32_t), 5997 &dev, 5998 &size, 5999 &cmdStatus); 6000 if (status == NO_ERROR) { 6001 status = cmdStatus; 6002 } 6003 } 6004 dev = device & AUDIO_DEVICE_IN_ALL; 6005 if (dev) { 6006 status_t cmdStatus; 6007 uint32_t size = sizeof(status_t); 6008 6009 status_t status2 = (*mEffectInterface)->command(mEffectInterface, 6010 EFFECT_CMD_SET_INPUT_DEVICE, 6011 sizeof(uint32_t), 6012 &dev, 6013 &size, 6014 &cmdStatus); 6015 if (status2 == NO_ERROR) { 6016 status2 = cmdStatus; 6017 } 6018 if (status == NO_ERROR) { 6019 status = status2; 6020 } 6021 } 6022 } 6023 return status; 6024} 6025 6026status_t AudioFlinger::EffectModule::setMode(uint32_t mode) 6027{ 6028 Mutex::Autolock _l(mLock); 6029 status_t status = NO_ERROR; 6030 if ((mDescriptor.flags & EFFECT_FLAG_AUDIO_MODE_MASK) == EFFECT_FLAG_AUDIO_MODE_IND) { 6031 status_t cmdStatus; 6032 uint32_t size = sizeof(status_t); 6033 status = (*mEffectInterface)->command(mEffectInterface, 6034 EFFECT_CMD_SET_AUDIO_MODE, 6035 sizeof(int), 6036 &mode, 6037 &size, 6038 &cmdStatus); 6039 if (status == NO_ERROR) { 6040 status = cmdStatus; 6041 } 6042 } 6043 return status; 6044} 6045 6046status_t AudioFlinger::EffectModule::dump(int fd, const Vector<String16>& args) 6047{ 6048 const size_t SIZE = 256; 6049 char buffer[SIZE]; 6050 String8 result; 6051 6052 snprintf(buffer, SIZE, "\tEffect ID %d:\n", mId); 6053 result.append(buffer); 6054 6055 bool locked = tryLock(mLock); 6056 // failed to lock - AudioFlinger is probably deadlocked 6057 if (!locked) { 6058 result.append("\t\tCould not lock Fx mutex:\n"); 6059 } 6060 6061 result.append("\t\tSession Status State Engine:\n"); 6062 snprintf(buffer, SIZE, "\t\t%05d %03d %03d 0x%08x\n", 6063 mSessionId, mStatus, mState, (uint32_t)mEffectInterface); 6064 result.append(buffer); 6065 6066 result.append("\t\tDescriptor:\n"); 6067 snprintf(buffer, SIZE, "\t\t- UUID: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 6068 mDescriptor.uuid.timeLow, mDescriptor.uuid.timeMid, mDescriptor.uuid.timeHiAndVersion, 6069 mDescriptor.uuid.clockSeq, mDescriptor.uuid.node[0], mDescriptor.uuid.node[1],mDescriptor.uuid.node[2], 6070 mDescriptor.uuid.node[3],mDescriptor.uuid.node[4],mDescriptor.uuid.node[5]); 6071 result.append(buffer); 6072 snprintf(buffer, SIZE, "\t\t- TYPE: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 6073 mDescriptor.type.timeLow, mDescriptor.type.timeMid, mDescriptor.type.timeHiAndVersion, 6074 mDescriptor.type.clockSeq, mDescriptor.type.node[0], mDescriptor.type.node[1],mDescriptor.type.node[2], 6075 mDescriptor.type.node[3],mDescriptor.type.node[4],mDescriptor.type.node[5]); 6076 result.append(buffer); 6077 snprintf(buffer, SIZE, "\t\t- apiVersion: %08X\n\t\t- flags: %08X\n", 6078 mDescriptor.apiVersion, 6079 mDescriptor.flags); 6080 result.append(buffer); 6081 snprintf(buffer, SIZE, "\t\t- name: %s\n", 6082 mDescriptor.name); 6083 result.append(buffer); 6084 snprintf(buffer, SIZE, "\t\t- implementor: %s\n", 6085 mDescriptor.implementor); 6086 result.append(buffer); 6087 6088 result.append("\t\t- Input configuration:\n"); 6089 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 6090 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 6091 (uint32_t)mConfig.inputCfg.buffer.raw, 6092 mConfig.inputCfg.buffer.frameCount, 6093 mConfig.inputCfg.samplingRate, 6094 mConfig.inputCfg.channels, 6095 mConfig.inputCfg.format); 6096 result.append(buffer); 6097 6098 result.append("\t\t- Output configuration:\n"); 6099 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 6100 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 6101 (uint32_t)mConfig.outputCfg.buffer.raw, 6102 mConfig.outputCfg.buffer.frameCount, 6103 mConfig.outputCfg.samplingRate, 6104 mConfig.outputCfg.channels, 6105 mConfig.outputCfg.format); 6106 result.append(buffer); 6107 6108 snprintf(buffer, SIZE, "\t\t%d Clients:\n", mHandles.size()); 6109 result.append(buffer); 6110 result.append("\t\t\tPid Priority Ctrl Locked client server\n"); 6111 for (size_t i = 0; i < mHandles.size(); ++i) { 6112 sp<EffectHandle> handle = mHandles[i].promote(); 6113 if (handle != 0) { 6114 handle->dump(buffer, SIZE); 6115 result.append(buffer); 6116 } 6117 } 6118 6119 result.append("\n"); 6120 6121 write(fd, result.string(), result.length()); 6122 6123 if (locked) { 6124 mLock.unlock(); 6125 } 6126 6127 return NO_ERROR; 6128} 6129 6130// ---------------------------------------------------------------------------- 6131// EffectHandle implementation 6132// ---------------------------------------------------------------------------- 6133 6134#undef LOG_TAG 6135#define LOG_TAG "AudioFlinger::EffectHandle" 6136 6137AudioFlinger::EffectHandle::EffectHandle(const sp<EffectModule>& effect, 6138 const sp<AudioFlinger::Client>& client, 6139 const sp<IEffectClient>& effectClient, 6140 int32_t priority) 6141 : BnEffect(), 6142 mEffect(effect), mEffectClient(effectClient), mClient(client), mPriority(priority), mHasControl(false) 6143{ 6144 LOGV("constructor %p", this); 6145 6146 int bufOffset = ((sizeof(effect_param_cblk_t) - 1) / sizeof(int) + 1) * sizeof(int); 6147 mCblkMemory = client->heap()->allocate(EFFECT_PARAM_BUFFER_SIZE + bufOffset); 6148 if (mCblkMemory != 0) { 6149 mCblk = static_cast<effect_param_cblk_t *>(mCblkMemory->pointer()); 6150 6151 if (mCblk) { 6152 new(mCblk) effect_param_cblk_t(); 6153 mBuffer = (uint8_t *)mCblk + bufOffset; 6154 } 6155 } else { 6156 LOGE("not enough memory for Effect size=%u", EFFECT_PARAM_BUFFER_SIZE + sizeof(effect_param_cblk_t)); 6157 return; 6158 } 6159} 6160 6161AudioFlinger::EffectHandle::~EffectHandle() 6162{ 6163 LOGV("Destructor %p", this); 6164 disconnect(); 6165} 6166 6167status_t AudioFlinger::EffectHandle::enable() 6168{ 6169 if (!mHasControl) return INVALID_OPERATION; 6170 if (mEffect == 0) return DEAD_OBJECT; 6171 6172 return mEffect->setEnabled(true); 6173} 6174 6175status_t AudioFlinger::EffectHandle::disable() 6176{ 6177 if (!mHasControl) return INVALID_OPERATION; 6178 if (mEffect == NULL) return DEAD_OBJECT; 6179 6180 return mEffect->setEnabled(false); 6181} 6182 6183void AudioFlinger::EffectHandle::disconnect() 6184{ 6185 if (mEffect == 0) { 6186 return; 6187 } 6188 mEffect->disconnect(this); 6189 // release sp on module => module destructor can be called now 6190 mEffect.clear(); 6191 if (mCblk) { 6192 mCblk->~effect_param_cblk_t(); // destroy our shared-structure. 6193 } 6194 mCblkMemory.clear(); // and free the shared memory 6195 if (mClient != 0) { 6196 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 6197 mClient.clear(); 6198 } 6199} 6200 6201status_t AudioFlinger::EffectHandle::command(uint32_t cmdCode, 6202 uint32_t cmdSize, 6203 void *pCmdData, 6204 uint32_t *replySize, 6205 void *pReplyData) 6206{ 6207// LOGV("command(), cmdCode: %d, mHasControl: %d, mEffect: %p", 6208// cmdCode, mHasControl, (mEffect == 0) ? 0 : mEffect.get()); 6209 6210 // only get parameter command is permitted for applications not controlling the effect 6211 if (!mHasControl && cmdCode != EFFECT_CMD_GET_PARAM) { 6212 return INVALID_OPERATION; 6213 } 6214 if (mEffect == 0) return DEAD_OBJECT; 6215 6216 // handle commands that are not forwarded transparently to effect engine 6217 if (cmdCode == EFFECT_CMD_SET_PARAM_COMMIT) { 6218 // No need to trylock() here as this function is executed in the binder thread serving a particular client process: 6219 // no risk to block the whole media server process or mixer threads is we are stuck here 6220 Mutex::Autolock _l(mCblk->lock); 6221 if (mCblk->clientIndex > EFFECT_PARAM_BUFFER_SIZE || 6222 mCblk->serverIndex > EFFECT_PARAM_BUFFER_SIZE) { 6223 mCblk->serverIndex = 0; 6224 mCblk->clientIndex = 0; 6225 return BAD_VALUE; 6226 } 6227 status_t status = NO_ERROR; 6228 while (mCblk->serverIndex < mCblk->clientIndex) { 6229 int reply; 6230 uint32_t rsize = sizeof(int); 6231 int *p = (int *)(mBuffer + mCblk->serverIndex); 6232 int size = *p++; 6233 if (((uint8_t *)p + size) > mBuffer + mCblk->clientIndex) { 6234 LOGW("command(): invalid parameter block size"); 6235 break; 6236 } 6237 effect_param_t *param = (effect_param_t *)p; 6238 if (param->psize == 0 || param->vsize == 0) { 6239 LOGW("command(): null parameter or value size"); 6240 mCblk->serverIndex += size; 6241 continue; 6242 } 6243 uint32_t psize = sizeof(effect_param_t) + 6244 ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + 6245 param->vsize; 6246 status_t ret = mEffect->command(EFFECT_CMD_SET_PARAM, 6247 psize, 6248 p, 6249 &rsize, 6250 &reply); 6251 // stop at first error encountered 6252 if (ret != NO_ERROR) { 6253 status = ret; 6254 *(int *)pReplyData = reply; 6255 break; 6256 } else if (reply != NO_ERROR) { 6257 *(int *)pReplyData = reply; 6258 break; 6259 } 6260 mCblk->serverIndex += size; 6261 } 6262 mCblk->serverIndex = 0; 6263 mCblk->clientIndex = 0; 6264 return status; 6265 } else if (cmdCode == EFFECT_CMD_ENABLE) { 6266 *(int *)pReplyData = NO_ERROR; 6267 return enable(); 6268 } else if (cmdCode == EFFECT_CMD_DISABLE) { 6269 *(int *)pReplyData = NO_ERROR; 6270 return disable(); 6271 } 6272 6273 return mEffect->command(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6274} 6275 6276sp<IMemory> AudioFlinger::EffectHandle::getCblk() const { 6277 return mCblkMemory; 6278} 6279 6280void AudioFlinger::EffectHandle::setControl(bool hasControl, bool signal) 6281{ 6282 LOGV("setControl %p control %d", this, hasControl); 6283 6284 mHasControl = hasControl; 6285 if (signal && mEffectClient != 0) { 6286 mEffectClient->controlStatusChanged(hasControl); 6287 } 6288} 6289 6290void AudioFlinger::EffectHandle::commandExecuted(uint32_t cmdCode, 6291 uint32_t cmdSize, 6292 void *pCmdData, 6293 uint32_t replySize, 6294 void *pReplyData) 6295{ 6296 if (mEffectClient != 0) { 6297 mEffectClient->commandExecuted(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6298 } 6299} 6300 6301 6302 6303void AudioFlinger::EffectHandle::setEnabled(bool enabled) 6304{ 6305 if (mEffectClient != 0) { 6306 mEffectClient->enableStatusChanged(enabled); 6307 } 6308} 6309 6310status_t AudioFlinger::EffectHandle::onTransact( 6311 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 6312{ 6313 return BnEffect::onTransact(code, data, reply, flags); 6314} 6315 6316 6317void AudioFlinger::EffectHandle::dump(char* buffer, size_t size) 6318{ 6319 bool locked = tryLock(mCblk->lock); 6320 6321 snprintf(buffer, size, "\t\t\t%05d %05d %01u %01u %05u %05u\n", 6322 (mClient == NULL) ? getpid() : mClient->pid(), 6323 mPriority, 6324 mHasControl, 6325 !locked, 6326 mCblk->clientIndex, 6327 mCblk->serverIndex 6328 ); 6329 6330 if (locked) { 6331 mCblk->lock.unlock(); 6332 } 6333} 6334 6335#undef LOG_TAG 6336#define LOG_TAG "AudioFlinger::EffectChain" 6337 6338AudioFlinger::EffectChain::EffectChain(const wp<ThreadBase>& wThread, 6339 int sessionId) 6340 : mThread(wThread), mSessionId(sessionId), mActiveTrackCnt(0), mTrackCnt(0), 6341 mOwnInBuffer(false), mVolumeCtrlIdx(-1), mLeftVolume(UINT_MAX), mRightVolume(UINT_MAX), 6342 mNewLeftVolume(UINT_MAX), mNewRightVolume(UINT_MAX) 6343{ 6344 mStrategy = AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 6345} 6346 6347AudioFlinger::EffectChain::~EffectChain() 6348{ 6349 if (mOwnInBuffer) { 6350 delete mInBuffer; 6351 } 6352 6353} 6354 6355// getEffectFromDesc_l() must be called with PlaybackThread::mLock held 6356sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromDesc_l(effect_descriptor_t *descriptor) 6357{ 6358 sp<EffectModule> effect; 6359 size_t size = mEffects.size(); 6360 6361 for (size_t i = 0; i < size; i++) { 6362 if (memcmp(&mEffects[i]->desc().uuid, &descriptor->uuid, sizeof(effect_uuid_t)) == 0) { 6363 effect = mEffects[i]; 6364 break; 6365 } 6366 } 6367 return effect; 6368} 6369 6370// getEffectFromId_l() must be called with PlaybackThread::mLock held 6371sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromId_l(int id) 6372{ 6373 sp<EffectModule> effect; 6374 size_t size = mEffects.size(); 6375 6376 for (size_t i = 0; i < size; i++) { 6377 // by convention, return first effect if id provided is 0 (0 is never a valid id) 6378 if (id == 0 || mEffects[i]->id() == id) { 6379 effect = mEffects[i]; 6380 break; 6381 } 6382 } 6383 return effect; 6384} 6385 6386// Must be called with EffectChain::mLock locked 6387void AudioFlinger::EffectChain::process_l() 6388{ 6389 sp<ThreadBase> thread = mThread.promote(); 6390 if (thread == 0) { 6391 LOGW("process_l(): cannot promote mixer thread"); 6392 return; 6393 } 6394 bool isGlobalSession = (mSessionId == AUDIO_SESSION_OUTPUT_MIX) || 6395 (mSessionId == AUDIO_SESSION_OUTPUT_STAGE); 6396 bool tracksOnSession = false; 6397 if (!isGlobalSession) { 6398 tracksOnSession = (trackCnt() != 0); 6399 } 6400 6401 // if no track is active, input buffer must be cleared here as the mixer process 6402 // will not do it 6403 if (tracksOnSession && 6404 activeTrackCnt() == 0) { 6405 size_t numSamples = thread->frameCount() * thread->channelCount(); 6406 memset(mInBuffer, 0, numSamples * sizeof(int16_t)); 6407 } 6408 6409 size_t size = mEffects.size(); 6410 // do not process effect if no track is present in same audio session 6411 if (isGlobalSession || tracksOnSession) { 6412 for (size_t i = 0; i < size; i++) { 6413 mEffects[i]->process(); 6414 } 6415 } 6416 for (size_t i = 0; i < size; i++) { 6417 mEffects[i]->updateState(); 6418 } 6419} 6420 6421// addEffect_l() must be called with PlaybackThread::mLock held 6422status_t AudioFlinger::EffectChain::addEffect_l(const sp<EffectModule>& effect) 6423{ 6424 effect_descriptor_t desc = effect->desc(); 6425 uint32_t insertPref = desc.flags & EFFECT_FLAG_INSERT_MASK; 6426 6427 Mutex::Autolock _l(mLock); 6428 effect->setChain(this); 6429 sp<ThreadBase> thread = mThread.promote(); 6430 if (thread == 0) { 6431 return NO_INIT; 6432 } 6433 effect->setThread(thread); 6434 6435 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6436 // Auxiliary effects are inserted at the beginning of mEffects vector as 6437 // they are processed first and accumulated in chain input buffer 6438 mEffects.insertAt(effect, 0); 6439 6440 // the input buffer for auxiliary effect contains mono samples in 6441 // 32 bit format. This is to avoid saturation in AudoMixer 6442 // accumulation stage. Saturation is done in EffectModule::process() before 6443 // calling the process in effect engine 6444 size_t numSamples = thread->frameCount(); 6445 int32_t *buffer = new int32_t[numSamples]; 6446 memset(buffer, 0, numSamples * sizeof(int32_t)); 6447 effect->setInBuffer((int16_t *)buffer); 6448 // auxiliary effects output samples to chain input buffer for further processing 6449 // by insert effects 6450 effect->setOutBuffer(mInBuffer); 6451 } else { 6452 // Insert effects are inserted at the end of mEffects vector as they are processed 6453 // after track and auxiliary effects. 6454 // Insert effect order as a function of indicated preference: 6455 // if EFFECT_FLAG_INSERT_EXCLUSIVE, insert in first position or reject if 6456 // another effect is present 6457 // else if EFFECT_FLAG_INSERT_FIRST, insert in first position or after the 6458 // last effect claiming first position 6459 // else if EFFECT_FLAG_INSERT_LAST, insert in last position or before the 6460 // first effect claiming last position 6461 // else if EFFECT_FLAG_INSERT_ANY insert after first or before last 6462 // Reject insertion if an effect with EFFECT_FLAG_INSERT_EXCLUSIVE is 6463 // already present 6464 6465 int size = (int)mEffects.size(); 6466 int idx_insert = size; 6467 int idx_insert_first = -1; 6468 int idx_insert_last = -1; 6469 6470 for (int i = 0; i < size; i++) { 6471 effect_descriptor_t d = mEffects[i]->desc(); 6472 uint32_t iMode = d.flags & EFFECT_FLAG_TYPE_MASK; 6473 uint32_t iPref = d.flags & EFFECT_FLAG_INSERT_MASK; 6474 if (iMode == EFFECT_FLAG_TYPE_INSERT) { 6475 // check invalid effect chaining combinations 6476 if (insertPref == EFFECT_FLAG_INSERT_EXCLUSIVE || 6477 iPref == EFFECT_FLAG_INSERT_EXCLUSIVE) { 6478 LOGW("addEffect_l() could not insert effect %s: exclusive conflict with %s", desc.name, d.name); 6479 return INVALID_OPERATION; 6480 } 6481 // remember position of first insert effect and by default 6482 // select this as insert position for new effect 6483 if (idx_insert == size) { 6484 idx_insert = i; 6485 } 6486 // remember position of last insert effect claiming 6487 // first position 6488 if (iPref == EFFECT_FLAG_INSERT_FIRST) { 6489 idx_insert_first = i; 6490 } 6491 // remember position of first insert effect claiming 6492 // last position 6493 if (iPref == EFFECT_FLAG_INSERT_LAST && 6494 idx_insert_last == -1) { 6495 idx_insert_last = i; 6496 } 6497 } 6498 } 6499 6500 // modify idx_insert from first position if needed 6501 if (insertPref == EFFECT_FLAG_INSERT_LAST) { 6502 if (idx_insert_last != -1) { 6503 idx_insert = idx_insert_last; 6504 } else { 6505 idx_insert = size; 6506 } 6507 } else { 6508 if (idx_insert_first != -1) { 6509 idx_insert = idx_insert_first + 1; 6510 } 6511 } 6512 6513 // always read samples from chain input buffer 6514 effect->setInBuffer(mInBuffer); 6515 6516 // if last effect in the chain, output samples to chain 6517 // output buffer, otherwise to chain input buffer 6518 if (idx_insert == size) { 6519 if (idx_insert != 0) { 6520 mEffects[idx_insert-1]->setOutBuffer(mInBuffer); 6521 mEffects[idx_insert-1]->configure(); 6522 } 6523 effect->setOutBuffer(mOutBuffer); 6524 } else { 6525 effect->setOutBuffer(mInBuffer); 6526 } 6527 mEffects.insertAt(effect, idx_insert); 6528 6529 LOGV("addEffect_l() effect %p, added in chain %p at rank %d", effect.get(), this, idx_insert); 6530 } 6531 effect->configure(); 6532 return NO_ERROR; 6533} 6534 6535// removeEffect_l() must be called with PlaybackThread::mLock held 6536size_t AudioFlinger::EffectChain::removeEffect_l(const sp<EffectModule>& effect) 6537{ 6538 Mutex::Autolock _l(mLock); 6539 int size = (int)mEffects.size(); 6540 int i; 6541 uint32_t type = effect->desc().flags & EFFECT_FLAG_TYPE_MASK; 6542 6543 for (i = 0; i < size; i++) { 6544 if (effect == mEffects[i]) { 6545 if (type == EFFECT_FLAG_TYPE_AUXILIARY) { 6546 delete[] effect->inBuffer(); 6547 } else { 6548 if (i == size - 1 && i != 0) { 6549 mEffects[i - 1]->setOutBuffer(mOutBuffer); 6550 mEffects[i - 1]->configure(); 6551 } 6552 } 6553 mEffects.removeAt(i); 6554 LOGV("removeEffect_l() effect %p, removed from chain %p at rank %d", effect.get(), this, i); 6555 break; 6556 } 6557 } 6558 6559 return mEffects.size(); 6560} 6561 6562// setDevice_l() must be called with PlaybackThread::mLock held 6563void AudioFlinger::EffectChain::setDevice_l(uint32_t device) 6564{ 6565 size_t size = mEffects.size(); 6566 for (size_t i = 0; i < size; i++) { 6567 mEffects[i]->setDevice(device); 6568 } 6569} 6570 6571// setMode_l() must be called with PlaybackThread::mLock held 6572void AudioFlinger::EffectChain::setMode_l(uint32_t mode) 6573{ 6574 size_t size = mEffects.size(); 6575 for (size_t i = 0; i < size; i++) { 6576 mEffects[i]->setMode(mode); 6577 } 6578} 6579 6580// setVolume_l() must be called with PlaybackThread::mLock held 6581bool AudioFlinger::EffectChain::setVolume_l(uint32_t *left, uint32_t *right) 6582{ 6583 uint32_t newLeft = *left; 6584 uint32_t newRight = *right; 6585 bool hasControl = false; 6586 int ctrlIdx = -1; 6587 size_t size = mEffects.size(); 6588 6589 // first update volume controller 6590 for (size_t i = size; i > 0; i--) { 6591 if (mEffects[i - 1]->isProcessEnabled() && 6592 (mEffects[i - 1]->desc().flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL) { 6593 ctrlIdx = i - 1; 6594 hasControl = true; 6595 break; 6596 } 6597 } 6598 6599 if (ctrlIdx == mVolumeCtrlIdx && *left == mLeftVolume && *right == mRightVolume) { 6600 if (hasControl) { 6601 *left = mNewLeftVolume; 6602 *right = mNewRightVolume; 6603 } 6604 return hasControl; 6605 } 6606 6607 mVolumeCtrlIdx = ctrlIdx; 6608 mLeftVolume = newLeft; 6609 mRightVolume = newRight; 6610 6611 // second get volume update from volume controller 6612 if (ctrlIdx >= 0) { 6613 mEffects[ctrlIdx]->setVolume(&newLeft, &newRight, true); 6614 mNewLeftVolume = newLeft; 6615 mNewRightVolume = newRight; 6616 } 6617 // then indicate volume to all other effects in chain. 6618 // Pass altered volume to effects before volume controller 6619 // and requested volume to effects after controller 6620 uint32_t lVol = newLeft; 6621 uint32_t rVol = newRight; 6622 6623 for (size_t i = 0; i < size; i++) { 6624 if ((int)i == ctrlIdx) continue; 6625 // this also works for ctrlIdx == -1 when there is no volume controller 6626 if ((int)i > ctrlIdx) { 6627 lVol = *left; 6628 rVol = *right; 6629 } 6630 mEffects[i]->setVolume(&lVol, &rVol, false); 6631 } 6632 *left = newLeft; 6633 *right = newRight; 6634 6635 return hasControl; 6636} 6637 6638status_t AudioFlinger::EffectChain::dump(int fd, const Vector<String16>& args) 6639{ 6640 const size_t SIZE = 256; 6641 char buffer[SIZE]; 6642 String8 result; 6643 6644 snprintf(buffer, SIZE, "Effects for session %d:\n", mSessionId); 6645 result.append(buffer); 6646 6647 bool locked = tryLock(mLock); 6648 // failed to lock - AudioFlinger is probably deadlocked 6649 if (!locked) { 6650 result.append("\tCould not lock mutex:\n"); 6651 } 6652 6653 result.append("\tNum fx In buffer Out buffer Active tracks:\n"); 6654 snprintf(buffer, SIZE, "\t%02d 0x%08x 0x%08x %d\n", 6655 mEffects.size(), 6656 (uint32_t)mInBuffer, 6657 (uint32_t)mOutBuffer, 6658 mActiveTrackCnt); 6659 result.append(buffer); 6660 write(fd, result.string(), result.size()); 6661 6662 for (size_t i = 0; i < mEffects.size(); ++i) { 6663 sp<EffectModule> effect = mEffects[i]; 6664 if (effect != 0) { 6665 effect->dump(fd, args); 6666 } 6667 } 6668 6669 if (locked) { 6670 mLock.unlock(); 6671 } 6672 6673 return NO_ERROR; 6674} 6675 6676#undef LOG_TAG 6677#define LOG_TAG "AudioFlinger" 6678 6679// ---------------------------------------------------------------------------- 6680 6681status_t AudioFlinger::onTransact( 6682 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 6683{ 6684 return BnAudioFlinger::onTransact(code, data, reply, flags); 6685} 6686 6687}; // namespace android 6688