AudioFlinger.cpp revision b469b9490b3cd9e0f0466d9b9ab228f6c793b82e
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 <hardware/audio.h> 47#include <hardware/audio_hal.h> 48 49#include "AudioMixer.h" 50#include "AudioFlinger.h" 51 52#include <media/EffectsFactoryApi.h> 53#include <media/EffectVisualizerApi.h> 54 55// ---------------------------------------------------------------------------- 56// the sim build doesn't have gettid 57 58#ifndef HAVE_GETTID 59# define gettid getpid 60#endif 61 62// ---------------------------------------------------------------------------- 63 64extern const char * const gEffectLibPath; 65 66namespace android { 67 68static const char* kDeadlockedString = "AudioFlinger may be deadlocked\n"; 69static const char* kHardwareLockedString = "Hardware lock is taken\n"; 70 71//static const nsecs_t kStandbyTimeInNsecs = seconds(3); 72static const float MAX_GAIN = 4096.0f; 73static const float MAX_GAIN_INT = 0x1000; 74 75// retry counts for buffer fill timeout 76// 50 * ~20msecs = 1 second 77static const int8_t kMaxTrackRetries = 50; 78static const int8_t kMaxTrackStartupRetries = 50; 79// allow less retry attempts on direct output thread. 80// direct outputs can be a scarce resource in audio hardware and should 81// be released as quickly as possible. 82static const int8_t kMaxTrackRetriesDirect = 2; 83 84static const int kDumpLockRetries = 50; 85static const int kDumpLockSleep = 20000; 86 87static const nsecs_t kWarningThrottle = seconds(5); 88 89 90#define AUDIOFLINGER_SECURITY_ENABLED 1 91 92// ---------------------------------------------------------------------------- 93 94static bool recordingAllowed() { 95#ifndef HAVE_ANDROID_OS 96 return true; 97#endif 98#if AUDIOFLINGER_SECURITY_ENABLED 99 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 100 bool ok = checkCallingPermission(String16("android.permission.RECORD_AUDIO")); 101 if (!ok) LOGE("Request requires android.permission.RECORD_AUDIO"); 102 return ok; 103#else 104 if (!checkCallingPermission(String16("android.permission.RECORD_AUDIO"))) 105 LOGW("WARNING: Need to add android.permission.RECORD_AUDIO to manifest"); 106 return true; 107#endif 108} 109 110static bool settingsAllowed() { 111#ifndef HAVE_ANDROID_OS 112 return true; 113#endif 114#if AUDIOFLINGER_SECURITY_ENABLED 115 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 116 bool ok = checkCallingPermission(String16("android.permission.MODIFY_AUDIO_SETTINGS")); 117 if (!ok) LOGE("Request requires android.permission.MODIFY_AUDIO_SETTINGS"); 118 return ok; 119#else 120 if (!checkCallingPermission(String16("android.permission.MODIFY_AUDIO_SETTINGS"))) 121 LOGW("WARNING: Need to add android.permission.MODIFY_AUDIO_SETTINGS to manifest"); 122 return true; 123#endif 124} 125 126// To collect the amplifier usage 127static void addBatteryData(uint32_t params) { 128 sp<IBinder> binder = 129 defaultServiceManager()->getService(String16("media.player")); 130 sp<IMediaPlayerService> service = interface_cast<IMediaPlayerService>(binder); 131 if (service.get() == NULL) { 132 LOGW("Cannot connect to the MediaPlayerService for battery tracking"); 133 return; 134 } 135 136 service->addBatteryData(params); 137} 138 139static int load_audio_interface(const char *if_name, const hw_module_t **mod, 140 audio_hw_device_t **dev) 141{ 142 int rc; 143 144 rc = hw_get_module_by_class(AUDIO_HARDWARE_MODULE_ID, if_name, mod); 145 if (rc) 146 goto out; 147 148 rc = audio_hw_device_open(*mod, dev); 149 LOGE_IF(rc, "couldn't open audio hw device in %s.%s (%s)", 150 AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc)); 151 if (rc) 152 goto out; 153 154 return 0; 155 156out: 157 *mod = NULL; 158 *dev = NULL; 159 return rc; 160} 161 162static const char *audio_interfaces[] = { 163 "primary", 164 "a2dp", 165 "usb", 166}; 167#define ARRAY_SIZE(x) (sizeof((x))/sizeof(((x)[0]))) 168 169// ---------------------------------------------------------------------------- 170 171AudioFlinger::AudioFlinger() 172 : BnAudioFlinger(), 173 mPrimaryHardwareDev(0), mMasterVolume(1.0f), mMasterMute(false), mNextUniqueId(1) 174{ 175} 176 177void AudioFlinger::onFirstRef() 178{ 179 int rc = 0; 180 181 Mutex::Autolock _l(mLock); 182 183 /* TODO: move all this work into an Init() function */ 184 mHardwareStatus = AUDIO_HW_IDLE; 185 186 for (size_t i = 0; i < ARRAY_SIZE(audio_interfaces); i++) { 187 const hw_module_t *mod; 188 audio_hw_device_t *dev; 189 190 rc = load_audio_interface(audio_interfaces[i], &mod, &dev); 191 if (rc) 192 continue; 193 194 LOGI("Loaded %s audio interface from %s (%s)", audio_interfaces[i], 195 mod->name, mod->id); 196 mAudioHwDevs.push(dev); 197 198 if (!mPrimaryHardwareDev) { 199 mPrimaryHardwareDev = dev; 200 LOGI("Using '%s' (%s.%s) as the primary audio interface", 201 mod->name, mod->id, audio_interfaces[i]); 202 } 203 } 204 205 mHardwareStatus = AUDIO_HW_INIT; 206 207 if (!mPrimaryHardwareDev || mAudioHwDevs.size() == 0) { 208 LOGE("Primary audio interface not found"); 209 return; 210 } 211 212 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 213 audio_hw_device_t *dev = mAudioHwDevs[i]; 214 215 mHardwareStatus = AUDIO_HW_INIT; 216 rc = dev->init_check(dev); 217 if (rc == 0) { 218 AutoMutex lock(mHardwareLock); 219 220 mMode = AUDIO_MODE_NORMAL; 221 mHardwareStatus = AUDIO_HW_SET_MODE; 222 dev->set_mode(dev, mMode); 223 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 224 dev->set_master_volume(dev, 1.0f); 225 mHardwareStatus = AUDIO_HW_IDLE; 226 } 227 } 228} 229 230status_t AudioFlinger::initCheck() const 231{ 232 Mutex::Autolock _l(mLock); 233 if (mPrimaryHardwareDev == NULL || mAudioHwDevs.size() == 0) 234 return NO_INIT; 235 return NO_ERROR; 236} 237 238AudioFlinger::~AudioFlinger() 239{ 240 int num_devs = mAudioHwDevs.size(); 241 242 while (!mRecordThreads.isEmpty()) { 243 // closeInput() will remove first entry from mRecordThreads 244 closeInput(mRecordThreads.keyAt(0)); 245 } 246 while (!mPlaybackThreads.isEmpty()) { 247 // closeOutput() will remove first entry from mPlaybackThreads 248 closeOutput(mPlaybackThreads.keyAt(0)); 249 } 250 251 for (int i = 0; i < num_devs; i++) { 252 audio_hw_device_t *dev = mAudioHwDevs[i]; 253 audio_hw_device_close(dev); 254 } 255 mAudioHwDevs.clear(); 256} 257 258audio_hw_device_t* AudioFlinger::findSuitableHwDev_l(uint32_t devices) 259{ 260 /* first matching HW device is returned */ 261 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 262 audio_hw_device_t *dev = mAudioHwDevs[i]; 263 if ((dev->get_supported_devices(dev) & devices) == devices) 264 return dev; 265 } 266 return NULL; 267} 268 269status_t AudioFlinger::dumpClients(int fd, const Vector<String16>& args) 270{ 271 const size_t SIZE = 256; 272 char buffer[SIZE]; 273 String8 result; 274 275 result.append("Clients:\n"); 276 for (size_t i = 0; i < mClients.size(); ++i) { 277 wp<Client> wClient = mClients.valueAt(i); 278 if (wClient != 0) { 279 sp<Client> client = wClient.promote(); 280 if (client != 0) { 281 snprintf(buffer, SIZE, " pid: %d\n", client->pid()); 282 result.append(buffer); 283 } 284 } 285 } 286 write(fd, result.string(), result.size()); 287 return NO_ERROR; 288} 289 290 291status_t AudioFlinger::dumpInternals(int fd, const Vector<String16>& args) 292{ 293 const size_t SIZE = 256; 294 char buffer[SIZE]; 295 String8 result; 296 int hardwareStatus = mHardwareStatus; 297 298 snprintf(buffer, SIZE, "Hardware status: %d\n", hardwareStatus); 299 result.append(buffer); 300 write(fd, result.string(), result.size()); 301 return NO_ERROR; 302} 303 304status_t AudioFlinger::dumpPermissionDenial(int fd, const Vector<String16>& args) 305{ 306 const size_t SIZE = 256; 307 char buffer[SIZE]; 308 String8 result; 309 snprintf(buffer, SIZE, "Permission Denial: " 310 "can't dump AudioFlinger from pid=%d, uid=%d\n", 311 IPCThreadState::self()->getCallingPid(), 312 IPCThreadState::self()->getCallingUid()); 313 result.append(buffer); 314 write(fd, result.string(), result.size()); 315 return NO_ERROR; 316} 317 318static bool tryLock(Mutex& mutex) 319{ 320 bool locked = false; 321 for (int i = 0; i < kDumpLockRetries; ++i) { 322 if (mutex.tryLock() == NO_ERROR) { 323 locked = true; 324 break; 325 } 326 usleep(kDumpLockSleep); 327 } 328 return locked; 329} 330 331status_t AudioFlinger::dump(int fd, const Vector<String16>& args) 332{ 333 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 334 dumpPermissionDenial(fd, args); 335 } else { 336 // get state of hardware lock 337 bool hardwareLocked = tryLock(mHardwareLock); 338 if (!hardwareLocked) { 339 String8 result(kHardwareLockedString); 340 write(fd, result.string(), result.size()); 341 } else { 342 mHardwareLock.unlock(); 343 } 344 345 bool locked = tryLock(mLock); 346 347 // failed to lock - AudioFlinger is probably deadlocked 348 if (!locked) { 349 String8 result(kDeadlockedString); 350 write(fd, result.string(), result.size()); 351 } 352 353 dumpClients(fd, args); 354 dumpInternals(fd, args); 355 356 // dump playback threads 357 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 358 mPlaybackThreads.valueAt(i)->dump(fd, args); 359 } 360 361 // dump record threads 362 for (size_t i = 0; i < mRecordThreads.size(); i++) { 363 mRecordThreads.valueAt(i)->dump(fd, args); 364 } 365 366 // dump all hardware devs 367 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 368 audio_hw_device_t *dev = mAudioHwDevs[i]; 369 dev->dump(dev, fd); 370 } 371 if (locked) mLock.unlock(); 372 } 373 return NO_ERROR; 374} 375 376 377// IAudioFlinger interface 378 379 380sp<IAudioTrack> AudioFlinger::createTrack( 381 pid_t pid, 382 int streamType, 383 uint32_t sampleRate, 384 int format, 385 int channelCount, 386 int frameCount, 387 uint32_t flags, 388 const sp<IMemory>& sharedBuffer, 389 int output, 390 int *sessionId, 391 status_t *status) 392{ 393 sp<PlaybackThread::Track> track; 394 sp<TrackHandle> trackHandle; 395 sp<Client> client; 396 wp<Client> wclient; 397 status_t lStatus; 398 int lSessionId; 399 400 if (streamType >= AUDIO_STREAM_CNT) { 401 LOGE("invalid stream type"); 402 lStatus = BAD_VALUE; 403 goto Exit; 404 } 405 406 { 407 Mutex::Autolock _l(mLock); 408 PlaybackThread *thread = checkPlaybackThread_l(output); 409 PlaybackThread *effectThread = NULL; 410 if (thread == NULL) { 411 LOGE("unknown output thread"); 412 lStatus = BAD_VALUE; 413 goto Exit; 414 } 415 416 wclient = mClients.valueFor(pid); 417 418 if (wclient != NULL) { 419 client = wclient.promote(); 420 } else { 421 client = new Client(this, pid); 422 mClients.add(pid, client); 423 } 424 425 LOGV("createTrack() sessionId: %d", (sessionId == NULL) ? -2 : *sessionId); 426 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 427 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 428 sp<PlaybackThread> t = mPlaybackThreads.valueAt(i); 429 if (mPlaybackThreads.keyAt(i) != output) { 430 // prevent same audio session on different output threads 431 uint32_t sessions = t->hasAudioSession(*sessionId); 432 if (sessions & PlaybackThread::TRACK_SESSION) { 433 lStatus = BAD_VALUE; 434 goto Exit; 435 } 436 // check if an effect with same session ID is waiting for a track to be created 437 if (sessions & PlaybackThread::EFFECT_SESSION) { 438 effectThread = t.get(); 439 } 440 } 441 } 442 lSessionId = *sessionId; 443 } else { 444 // if no audio session id is provided, create one here 445 lSessionId = nextUniqueId_l(); 446 if (sessionId != NULL) { 447 *sessionId = lSessionId; 448 } 449 } 450 LOGV("createTrack() lSessionId: %d", lSessionId); 451 452 track = thread->createTrack_l(client, streamType, sampleRate, format, 453 channelCount, frameCount, sharedBuffer, lSessionId, &lStatus); 454 455 // move effect chain to this output thread if an effect on same session was waiting 456 // for a track to be created 457 if (lStatus == NO_ERROR && effectThread != NULL) { 458 Mutex::Autolock _dl(thread->mLock); 459 Mutex::Autolock _sl(effectThread->mLock); 460 moveEffectChain_l(lSessionId, effectThread, thread, true); 461 } 462 } 463 if (lStatus == NO_ERROR) { 464 trackHandle = new TrackHandle(track); 465 } else { 466 // remove local strong reference to Client before deleting the Track so that the Client 467 // destructor is called by the TrackBase destructor with mLock held 468 client.clear(); 469 track.clear(); 470 } 471 472Exit: 473 if(status) { 474 *status = lStatus; 475 } 476 return trackHandle; 477} 478 479uint32_t AudioFlinger::sampleRate(int output) const 480{ 481 Mutex::Autolock _l(mLock); 482 PlaybackThread *thread = checkPlaybackThread_l(output); 483 if (thread == NULL) { 484 LOGW("sampleRate() unknown thread %d", output); 485 return 0; 486 } 487 return thread->sampleRate(); 488} 489 490int AudioFlinger::channelCount(int output) const 491{ 492 Mutex::Autolock _l(mLock); 493 PlaybackThread *thread = checkPlaybackThread_l(output); 494 if (thread == NULL) { 495 LOGW("channelCount() unknown thread %d", output); 496 return 0; 497 } 498 return thread->channelCount(); 499} 500 501int AudioFlinger::format(int output) const 502{ 503 Mutex::Autolock _l(mLock); 504 PlaybackThread *thread = checkPlaybackThread_l(output); 505 if (thread == NULL) { 506 LOGW("format() unknown thread %d", output); 507 return 0; 508 } 509 return thread->format(); 510} 511 512size_t AudioFlinger::frameCount(int output) const 513{ 514 Mutex::Autolock _l(mLock); 515 PlaybackThread *thread = checkPlaybackThread_l(output); 516 if (thread == NULL) { 517 LOGW("frameCount() unknown thread %d", output); 518 return 0; 519 } 520 return thread->frameCount(); 521} 522 523uint32_t AudioFlinger::latency(int output) const 524{ 525 Mutex::Autolock _l(mLock); 526 PlaybackThread *thread = checkPlaybackThread_l(output); 527 if (thread == NULL) { 528 LOGW("latency() unknown thread %d", output); 529 return 0; 530 } 531 return thread->latency(); 532} 533 534status_t AudioFlinger::setMasterVolume(float value) 535{ 536 // check calling permissions 537 if (!settingsAllowed()) { 538 return PERMISSION_DENIED; 539 } 540 541 // when hw supports master volume, don't scale in sw mixer 542 { // scope for the lock 543 AutoMutex lock(mHardwareLock); 544 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 545 if (mPrimaryHardwareDev->set_master_volume(mPrimaryHardwareDev, value) == NO_ERROR) { 546 value = 1.0f; 547 } 548 mHardwareStatus = AUDIO_HW_IDLE; 549 } 550 551 Mutex::Autolock _l(mLock); 552 mMasterVolume = value; 553 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 554 mPlaybackThreads.valueAt(i)->setMasterVolume(value); 555 556 return NO_ERROR; 557} 558 559status_t AudioFlinger::setMode(int mode) 560{ 561 status_t ret; 562 563 // check calling permissions 564 if (!settingsAllowed()) { 565 return PERMISSION_DENIED; 566 } 567 if ((mode < 0) || (mode >= AUDIO_MODE_CNT)) { 568 LOGW("Illegal value: setMode(%d)", mode); 569 return BAD_VALUE; 570 } 571 572 { // scope for the lock 573 AutoMutex lock(mHardwareLock); 574 mHardwareStatus = AUDIO_HW_SET_MODE; 575 ret = mPrimaryHardwareDev->set_mode(mPrimaryHardwareDev, mode); 576 mHardwareStatus = AUDIO_HW_IDLE; 577 } 578 579 if (NO_ERROR == ret) { 580 Mutex::Autolock _l(mLock); 581 mMode = mode; 582 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 583 mPlaybackThreads.valueAt(i)->setMode(mode); 584 } 585 586 return ret; 587} 588 589status_t AudioFlinger::setMicMute(bool state) 590{ 591 // check calling permissions 592 if (!settingsAllowed()) { 593 return PERMISSION_DENIED; 594 } 595 596 AutoMutex lock(mHardwareLock); 597 mHardwareStatus = AUDIO_HW_SET_MIC_MUTE; 598 status_t ret = mPrimaryHardwareDev->set_mic_mute(mPrimaryHardwareDev, state); 599 mHardwareStatus = AUDIO_HW_IDLE; 600 return ret; 601} 602 603bool AudioFlinger::getMicMute() const 604{ 605 bool state = AUDIO_MODE_INVALID; 606 mHardwareStatus = AUDIO_HW_GET_MIC_MUTE; 607 mPrimaryHardwareDev->get_mic_mute(mPrimaryHardwareDev, &state); 608 mHardwareStatus = AUDIO_HW_IDLE; 609 return state; 610} 611 612status_t AudioFlinger::setMasterMute(bool muted) 613{ 614 // check calling permissions 615 if (!settingsAllowed()) { 616 return PERMISSION_DENIED; 617 } 618 619 Mutex::Autolock _l(mLock); 620 mMasterMute = muted; 621 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 622 mPlaybackThreads.valueAt(i)->setMasterMute(muted); 623 624 return NO_ERROR; 625} 626 627float AudioFlinger::masterVolume() const 628{ 629 return mMasterVolume; 630} 631 632bool AudioFlinger::masterMute() const 633{ 634 return mMasterMute; 635} 636 637status_t AudioFlinger::setStreamVolume(int stream, float value, int output) 638{ 639 // check calling permissions 640 if (!settingsAllowed()) { 641 return PERMISSION_DENIED; 642 } 643 644 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT) { 645 return BAD_VALUE; 646 } 647 648 AutoMutex lock(mLock); 649 PlaybackThread *thread = NULL; 650 if (output) { 651 thread = checkPlaybackThread_l(output); 652 if (thread == NULL) { 653 return BAD_VALUE; 654 } 655 } 656 657 mStreamTypes[stream].volume = value; 658 659 if (thread == NULL) { 660 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) { 661 mPlaybackThreads.valueAt(i)->setStreamVolume(stream, value); 662 } 663 } else { 664 thread->setStreamVolume(stream, value); 665 } 666 667 return NO_ERROR; 668} 669 670status_t AudioFlinger::setStreamMute(int stream, bool muted) 671{ 672 // check calling permissions 673 if (!settingsAllowed()) { 674 return PERMISSION_DENIED; 675 } 676 677 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT || 678 uint32_t(stream) == AUDIO_STREAM_ENFORCED_AUDIBLE) { 679 return BAD_VALUE; 680 } 681 682 AutoMutex lock(mLock); 683 mStreamTypes[stream].mute = muted; 684 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 685 mPlaybackThreads.valueAt(i)->setStreamMute(stream, muted); 686 687 return NO_ERROR; 688} 689 690float AudioFlinger::streamVolume(int stream, int output) const 691{ 692 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT) { 693 return 0.0f; 694 } 695 696 AutoMutex lock(mLock); 697 float volume; 698 if (output) { 699 PlaybackThread *thread = checkPlaybackThread_l(output); 700 if (thread == NULL) { 701 return 0.0f; 702 } 703 volume = thread->streamVolume(stream); 704 } else { 705 volume = mStreamTypes[stream].volume; 706 } 707 708 return volume; 709} 710 711bool AudioFlinger::streamMute(int stream) const 712{ 713 if (stream < 0 || stream >= (int)AUDIO_STREAM_CNT) { 714 return true; 715 } 716 717 return mStreamTypes[stream].mute; 718} 719 720status_t AudioFlinger::setParameters(int ioHandle, const String8& keyValuePairs) 721{ 722 status_t result; 723 724 LOGV("setParameters(): io %d, keyvalue %s, tid %d, calling tid %d", 725 ioHandle, keyValuePairs.string(), gettid(), IPCThreadState::self()->getCallingPid()); 726 // check calling permissions 727 if (!settingsAllowed()) { 728 return PERMISSION_DENIED; 729 } 730 731 // ioHandle == 0 means the parameters are global to the audio hardware interface 732 if (ioHandle == 0) { 733 AutoMutex lock(mHardwareLock); 734 mHardwareStatus = AUDIO_SET_PARAMETER; 735 status_t final_result = NO_ERROR; 736 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 737 audio_hw_device_t *dev = mAudioHwDevs[i]; 738 result = dev->set_parameters(dev, keyValuePairs.string()); 739 final_result = result ?: final_result; 740 } 741 mHardwareStatus = AUDIO_HW_IDLE; 742 return final_result; 743 } 744 745 // hold a strong ref on thread in case closeOutput() or closeInput() is called 746 // and the thread is exited once the lock is released 747 sp<ThreadBase> thread; 748 { 749 Mutex::Autolock _l(mLock); 750 thread = checkPlaybackThread_l(ioHandle); 751 if (thread == NULL) { 752 thread = checkRecordThread_l(ioHandle); 753 } 754 } 755 if (thread != NULL) { 756 result = thread->setParameters(keyValuePairs); 757 return result; 758 } 759 return BAD_VALUE; 760} 761 762String8 AudioFlinger::getParameters(int ioHandle, const String8& keys) 763{ 764// LOGV("getParameters() io %d, keys %s, tid %d, calling tid %d", 765// ioHandle, keys.string(), gettid(), IPCThreadState::self()->getCallingPid()); 766 767 if (ioHandle == 0) { 768 String8 out_s8; 769 770 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 771 audio_hw_device_t *dev = mAudioHwDevs[i]; 772 char *s = dev->get_parameters(dev, keys.string()); 773 out_s8 += String8(s); 774 free(s); 775 } 776 return out_s8; 777 } 778 779 Mutex::Autolock _l(mLock); 780 781 PlaybackThread *playbackThread = checkPlaybackThread_l(ioHandle); 782 if (playbackThread != NULL) { 783 return playbackThread->getParameters(keys); 784 } 785 RecordThread *recordThread = checkRecordThread_l(ioHandle); 786 if (recordThread != NULL) { 787 return recordThread->getParameters(keys); 788 } 789 return String8(""); 790} 791 792size_t AudioFlinger::getInputBufferSize(uint32_t sampleRate, int format, int channelCount) 793{ 794 return mPrimaryHardwareDev->get_input_buffer_size(mPrimaryHardwareDev, sampleRate, format, channelCount); 795} 796 797unsigned int AudioFlinger::getInputFramesLost(int ioHandle) 798{ 799 if (ioHandle == 0) { 800 return 0; 801 } 802 803 Mutex::Autolock _l(mLock); 804 805 RecordThread *recordThread = checkRecordThread_l(ioHandle); 806 if (recordThread != NULL) { 807 return recordThread->getInputFramesLost(); 808 } 809 return 0; 810} 811 812status_t AudioFlinger::setVoiceVolume(float value) 813{ 814 // check calling permissions 815 if (!settingsAllowed()) { 816 return PERMISSION_DENIED; 817 } 818 819 AutoMutex lock(mHardwareLock); 820 mHardwareStatus = AUDIO_SET_VOICE_VOLUME; 821 status_t ret = mPrimaryHardwareDev->set_voice_volume(mPrimaryHardwareDev, value); 822 mHardwareStatus = AUDIO_HW_IDLE; 823 824 return ret; 825} 826 827status_t AudioFlinger::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output) 828{ 829 status_t status; 830 831 Mutex::Autolock _l(mLock); 832 833 PlaybackThread *playbackThread = checkPlaybackThread_l(output); 834 if (playbackThread != NULL) { 835 return playbackThread->getRenderPosition(halFrames, dspFrames); 836 } 837 838 return BAD_VALUE; 839} 840 841void AudioFlinger::registerClient(const sp<IAudioFlingerClient>& client) 842{ 843 844 Mutex::Autolock _l(mLock); 845 846 int pid = IPCThreadState::self()->getCallingPid(); 847 if (mNotificationClients.indexOfKey(pid) < 0) { 848 sp<NotificationClient> notificationClient = new NotificationClient(this, 849 client, 850 pid); 851 LOGV("registerClient() client %p, pid %d", notificationClient.get(), pid); 852 853 mNotificationClients.add(pid, notificationClient); 854 855 sp<IBinder> binder = client->asBinder(); 856 binder->linkToDeath(notificationClient); 857 858 // the config change is always sent from playback or record threads to avoid deadlock 859 // with AudioSystem::gLock 860 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 861 mPlaybackThreads.valueAt(i)->sendConfigEvent(AudioSystem::OUTPUT_OPENED); 862 } 863 864 for (size_t i = 0; i < mRecordThreads.size(); i++) { 865 mRecordThreads.valueAt(i)->sendConfigEvent(AudioSystem::INPUT_OPENED); 866 } 867 } 868} 869 870void AudioFlinger::removeNotificationClient(pid_t pid) 871{ 872 Mutex::Autolock _l(mLock); 873 874 int index = mNotificationClients.indexOfKey(pid); 875 if (index >= 0) { 876 sp <NotificationClient> client = mNotificationClients.valueFor(pid); 877 LOGV("removeNotificationClient() %p, pid %d", client.get(), pid); 878 mNotificationClients.removeItem(pid); 879 } 880} 881 882// audioConfigChanged_l() must be called with AudioFlinger::mLock held 883void AudioFlinger::audioConfigChanged_l(int event, int ioHandle, void *param2) 884{ 885 size_t size = mNotificationClients.size(); 886 for (size_t i = 0; i < size; i++) { 887 mNotificationClients.valueAt(i)->client()->ioConfigChanged(event, ioHandle, param2); 888 } 889} 890 891// removeClient_l() must be called with AudioFlinger::mLock held 892void AudioFlinger::removeClient_l(pid_t pid) 893{ 894 LOGV("removeClient_l() pid %d, tid %d, calling tid %d", pid, gettid(), IPCThreadState::self()->getCallingPid()); 895 mClients.removeItem(pid); 896} 897 898 899// ---------------------------------------------------------------------------- 900 901AudioFlinger::ThreadBase::ThreadBase(const sp<AudioFlinger>& audioFlinger, int id) 902 : Thread(false), 903 mAudioFlinger(audioFlinger), mSampleRate(0), mFrameCount(0), mChannelCount(0), 904 mFrameSize(1), mFormat(0), mStandby(false), mId(id), mExiting(false) 905{ 906} 907 908AudioFlinger::ThreadBase::~ThreadBase() 909{ 910 mParamCond.broadcast(); 911 mNewParameters.clear(); 912} 913 914void AudioFlinger::ThreadBase::exit() 915{ 916 // keep a strong ref on ourself so that we wont get 917 // destroyed in the middle of requestExitAndWait() 918 sp <ThreadBase> strongMe = this; 919 920 LOGV("ThreadBase::exit"); 921 { 922 AutoMutex lock(&mLock); 923 mExiting = true; 924 requestExit(); 925 mWaitWorkCV.signal(); 926 } 927 requestExitAndWait(); 928} 929 930uint32_t AudioFlinger::ThreadBase::sampleRate() const 931{ 932 return mSampleRate; 933} 934 935int AudioFlinger::ThreadBase::channelCount() const 936{ 937 return (int)mChannelCount; 938} 939 940int AudioFlinger::ThreadBase::format() const 941{ 942 return mFormat; 943} 944 945size_t AudioFlinger::ThreadBase::frameCount() const 946{ 947 return mFrameCount; 948} 949 950status_t AudioFlinger::ThreadBase::setParameters(const String8& keyValuePairs) 951{ 952 status_t status; 953 954 LOGV("ThreadBase::setParameters() %s", keyValuePairs.string()); 955 Mutex::Autolock _l(mLock); 956 957 mNewParameters.add(keyValuePairs); 958 mWaitWorkCV.signal(); 959 // wait condition with timeout in case the thread loop has exited 960 // before the request could be processed 961 if (mParamCond.waitRelative(mLock, seconds(2)) == NO_ERROR) { 962 status = mParamStatus; 963 mWaitWorkCV.signal(); 964 } else { 965 status = TIMED_OUT; 966 } 967 return status; 968} 969 970void AudioFlinger::ThreadBase::sendConfigEvent(int event, int param) 971{ 972 Mutex::Autolock _l(mLock); 973 sendConfigEvent_l(event, param); 974} 975 976// sendConfigEvent_l() must be called with ThreadBase::mLock held 977void AudioFlinger::ThreadBase::sendConfigEvent_l(int event, int param) 978{ 979 ConfigEvent *configEvent = new ConfigEvent(); 980 configEvent->mEvent = event; 981 configEvent->mParam = param; 982 mConfigEvents.add(configEvent); 983 LOGV("sendConfigEvent() num events %d event %d, param %d", mConfigEvents.size(), event, param); 984 mWaitWorkCV.signal(); 985} 986 987void AudioFlinger::ThreadBase::processConfigEvents() 988{ 989 mLock.lock(); 990 while(!mConfigEvents.isEmpty()) { 991 LOGV("processConfigEvents() remaining events %d", mConfigEvents.size()); 992 ConfigEvent *configEvent = mConfigEvents[0]; 993 mConfigEvents.removeAt(0); 994 // release mLock before locking AudioFlinger mLock: lock order is always 995 // AudioFlinger then ThreadBase to avoid cross deadlock 996 mLock.unlock(); 997 mAudioFlinger->mLock.lock(); 998 audioConfigChanged_l(configEvent->mEvent, configEvent->mParam); 999 mAudioFlinger->mLock.unlock(); 1000 delete configEvent; 1001 mLock.lock(); 1002 } 1003 mLock.unlock(); 1004} 1005 1006status_t AudioFlinger::ThreadBase::dumpBase(int fd, const Vector<String16>& args) 1007{ 1008 const size_t SIZE = 256; 1009 char buffer[SIZE]; 1010 String8 result; 1011 1012 bool locked = tryLock(mLock); 1013 if (!locked) { 1014 snprintf(buffer, SIZE, "thread %p maybe dead locked\n", this); 1015 write(fd, buffer, strlen(buffer)); 1016 } 1017 1018 snprintf(buffer, SIZE, "standby: %d\n", mStandby); 1019 result.append(buffer); 1020 snprintf(buffer, SIZE, "Sample rate: %d\n", mSampleRate); 1021 result.append(buffer); 1022 snprintf(buffer, SIZE, "Frame count: %d\n", mFrameCount); 1023 result.append(buffer); 1024 snprintf(buffer, SIZE, "Channel Count: %d\n", mChannelCount); 1025 result.append(buffer); 1026 snprintf(buffer, SIZE, "Format: %d\n", mFormat); 1027 result.append(buffer); 1028 snprintf(buffer, SIZE, "Frame size: %d\n", mFrameSize); 1029 result.append(buffer); 1030 1031 snprintf(buffer, SIZE, "\nPending setParameters commands: \n"); 1032 result.append(buffer); 1033 result.append(" Index Command"); 1034 for (size_t i = 0; i < mNewParameters.size(); ++i) { 1035 snprintf(buffer, SIZE, "\n %02d ", i); 1036 result.append(buffer); 1037 result.append(mNewParameters[i]); 1038 } 1039 1040 snprintf(buffer, SIZE, "\n\nPending config events: \n"); 1041 result.append(buffer); 1042 snprintf(buffer, SIZE, " Index event param\n"); 1043 result.append(buffer); 1044 for (size_t i = 0; i < mConfigEvents.size(); i++) { 1045 snprintf(buffer, SIZE, " %02d %02d %d\n", i, mConfigEvents[i]->mEvent, mConfigEvents[i]->mParam); 1046 result.append(buffer); 1047 } 1048 result.append("\n"); 1049 1050 write(fd, result.string(), result.size()); 1051 1052 if (locked) { 1053 mLock.unlock(); 1054 } 1055 return NO_ERROR; 1056} 1057 1058 1059// ---------------------------------------------------------------------------- 1060 1061AudioFlinger::PlaybackThread::PlaybackThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 1062 : ThreadBase(audioFlinger, id), 1063 mMixBuffer(0), mSuspended(0), mBytesWritten(0), mOutput(output), 1064 mLastWriteTime(0), mNumWrites(0), mNumDelayedWrites(0), mInWrite(false), 1065 mDevice(device) 1066{ 1067 readOutputParameters(); 1068 1069 mMasterVolume = mAudioFlinger->masterVolume(); 1070 mMasterMute = mAudioFlinger->masterMute(); 1071 1072 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 1073 mStreamTypes[stream].volume = mAudioFlinger->streamVolumeInternal(stream); 1074 mStreamTypes[stream].mute = mAudioFlinger->streamMute(stream); 1075 } 1076} 1077 1078AudioFlinger::PlaybackThread::~PlaybackThread() 1079{ 1080 delete [] mMixBuffer; 1081} 1082 1083status_t AudioFlinger::PlaybackThread::dump(int fd, const Vector<String16>& args) 1084{ 1085 dumpInternals(fd, args); 1086 dumpTracks(fd, args); 1087 dumpEffectChains(fd, args); 1088 return NO_ERROR; 1089} 1090 1091status_t AudioFlinger::PlaybackThread::dumpTracks(int fd, const Vector<String16>& args) 1092{ 1093 const size_t SIZE = 256; 1094 char buffer[SIZE]; 1095 String8 result; 1096 1097 snprintf(buffer, SIZE, "Output thread %p tracks\n", this); 1098 result.append(buffer); 1099 result.append(" Name Clien Typ Fmt Chn Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 1100 for (size_t i = 0; i < mTracks.size(); ++i) { 1101 sp<Track> track = mTracks[i]; 1102 if (track != 0) { 1103 track->dump(buffer, SIZE); 1104 result.append(buffer); 1105 } 1106 } 1107 1108 snprintf(buffer, SIZE, "Output thread %p active tracks\n", this); 1109 result.append(buffer); 1110 result.append(" Name Clien Typ Fmt Chn Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 1111 for (size_t i = 0; i < mActiveTracks.size(); ++i) { 1112 wp<Track> wTrack = mActiveTracks[i]; 1113 if (wTrack != 0) { 1114 sp<Track> track = wTrack.promote(); 1115 if (track != 0) { 1116 track->dump(buffer, SIZE); 1117 result.append(buffer); 1118 } 1119 } 1120 } 1121 write(fd, result.string(), result.size()); 1122 return NO_ERROR; 1123} 1124 1125status_t AudioFlinger::PlaybackThread::dumpEffectChains(int fd, const Vector<String16>& args) 1126{ 1127 const size_t SIZE = 256; 1128 char buffer[SIZE]; 1129 String8 result; 1130 1131 snprintf(buffer, SIZE, "\n- %d Effect Chains:\n", mEffectChains.size()); 1132 write(fd, buffer, strlen(buffer)); 1133 1134 for (size_t i = 0; i < mEffectChains.size(); ++i) { 1135 sp<EffectChain> chain = mEffectChains[i]; 1136 if (chain != 0) { 1137 chain->dump(fd, args); 1138 } 1139 } 1140 return NO_ERROR; 1141} 1142 1143status_t AudioFlinger::PlaybackThread::dumpInternals(int fd, const Vector<String16>& args) 1144{ 1145 const size_t SIZE = 256; 1146 char buffer[SIZE]; 1147 String8 result; 1148 1149 snprintf(buffer, SIZE, "\nOutput thread %p internals\n", this); 1150 result.append(buffer); 1151 snprintf(buffer, SIZE, "last write occurred (msecs): %llu\n", ns2ms(systemTime() - mLastWriteTime)); 1152 result.append(buffer); 1153 snprintf(buffer, SIZE, "total writes: %d\n", mNumWrites); 1154 result.append(buffer); 1155 snprintf(buffer, SIZE, "delayed writes: %d\n", mNumDelayedWrites); 1156 result.append(buffer); 1157 snprintf(buffer, SIZE, "blocked in write: %d\n", mInWrite); 1158 result.append(buffer); 1159 snprintf(buffer, SIZE, "suspend count: %d\n", mSuspended); 1160 result.append(buffer); 1161 snprintf(buffer, SIZE, "mix buffer : %p\n", mMixBuffer); 1162 result.append(buffer); 1163 write(fd, result.string(), result.size()); 1164 1165 dumpBase(fd, args); 1166 1167 return NO_ERROR; 1168} 1169 1170// Thread virtuals 1171status_t AudioFlinger::PlaybackThread::readyToRun() 1172{ 1173 if (mSampleRate == 0) { 1174 LOGE("No working audio driver found."); 1175 return NO_INIT; 1176 } 1177 LOGI("AudioFlinger's thread %p ready to run", this); 1178 return NO_ERROR; 1179} 1180 1181void AudioFlinger::PlaybackThread::onFirstRef() 1182{ 1183 const size_t SIZE = 256; 1184 char buffer[SIZE]; 1185 1186 snprintf(buffer, SIZE, "Playback Thread %p", this); 1187 1188 run(buffer, ANDROID_PRIORITY_URGENT_AUDIO); 1189} 1190 1191// PlaybackThread::createTrack_l() must be called with AudioFlinger::mLock held 1192sp<AudioFlinger::PlaybackThread::Track> AudioFlinger::PlaybackThread::createTrack_l( 1193 const sp<AudioFlinger::Client>& client, 1194 int streamType, 1195 uint32_t sampleRate, 1196 int format, 1197 int channelCount, 1198 int frameCount, 1199 const sp<IMemory>& sharedBuffer, 1200 int sessionId, 1201 status_t *status) 1202{ 1203 sp<Track> track; 1204 status_t lStatus; 1205 1206 if (mType == DIRECT) { 1207 if (sampleRate != mSampleRate || format != mFormat || channelCount != (int)mChannelCount) { 1208 LOGE("createTrack_l() Bad parameter: sampleRate %d format %d, channelCount %d for output %p", 1209 sampleRate, format, channelCount, mOutput); 1210 lStatus = BAD_VALUE; 1211 goto Exit; 1212 } 1213 } else { 1214 // Resampler implementation limits input sampling rate to 2 x output sampling rate. 1215 if (sampleRate > mSampleRate*2) { 1216 LOGE("Sample rate out of range: %d mSampleRate %d", sampleRate, mSampleRate); 1217 lStatus = BAD_VALUE; 1218 goto Exit; 1219 } 1220 } 1221 1222 if (mOutput == 0) { 1223 LOGE("Audio driver not initialized."); 1224 lStatus = NO_INIT; 1225 goto Exit; 1226 } 1227 1228 { // scope for mLock 1229 Mutex::Autolock _l(mLock); 1230 1231 // all tracks in same audio session must share the same routing strategy otherwise 1232 // conflicts will happen when tracks are moved from one output to another by audio policy 1233 // manager 1234 uint32_t strategy = 1235 AudioSystem::getStrategyForStream((audio_stream_type_t)streamType); 1236 for (size_t i = 0; i < mTracks.size(); ++i) { 1237 sp<Track> t = mTracks[i]; 1238 if (t != 0) { 1239 if (sessionId == t->sessionId() && 1240 strategy != AudioSystem::getStrategyForStream((audio_stream_type_t)t->type())) { 1241 lStatus = BAD_VALUE; 1242 goto Exit; 1243 } 1244 } 1245 } 1246 1247 track = new Track(this, client, streamType, sampleRate, format, 1248 channelCount, frameCount, sharedBuffer, sessionId); 1249 if (track->getCblk() == NULL || track->name() < 0) { 1250 lStatus = NO_MEMORY; 1251 goto Exit; 1252 } 1253 mTracks.add(track); 1254 1255 sp<EffectChain> chain = getEffectChain_l(sessionId); 1256 if (chain != 0) { 1257 LOGV("createTrack_l() setting main buffer %p", chain->inBuffer()); 1258 track->setMainBuffer(chain->inBuffer()); 1259 chain->setStrategy(AudioSystem::getStrategyForStream((audio_stream_type_t)track->type())); 1260 chain->incTrackCnt(); 1261 } 1262 } 1263 lStatus = NO_ERROR; 1264 1265Exit: 1266 if(status) { 1267 *status = lStatus; 1268 } 1269 return track; 1270} 1271 1272uint32_t AudioFlinger::PlaybackThread::latency() const 1273{ 1274 if (mOutput) { 1275 return mOutput->stream->get_latency(mOutput->stream); 1276 } 1277 else { 1278 return 0; 1279 } 1280} 1281 1282status_t AudioFlinger::PlaybackThread::setMasterVolume(float value) 1283{ 1284 mMasterVolume = value; 1285 return NO_ERROR; 1286} 1287 1288status_t AudioFlinger::PlaybackThread::setMasterMute(bool muted) 1289{ 1290 mMasterMute = muted; 1291 return NO_ERROR; 1292} 1293 1294float AudioFlinger::PlaybackThread::masterVolume() const 1295{ 1296 return mMasterVolume; 1297} 1298 1299bool AudioFlinger::PlaybackThread::masterMute() const 1300{ 1301 return mMasterMute; 1302} 1303 1304status_t AudioFlinger::PlaybackThread::setStreamVolume(int stream, float value) 1305{ 1306 mStreamTypes[stream].volume = value; 1307 return NO_ERROR; 1308} 1309 1310status_t AudioFlinger::PlaybackThread::setStreamMute(int stream, bool muted) 1311{ 1312 mStreamTypes[stream].mute = muted; 1313 return NO_ERROR; 1314} 1315 1316float AudioFlinger::PlaybackThread::streamVolume(int stream) const 1317{ 1318 return mStreamTypes[stream].volume; 1319} 1320 1321bool AudioFlinger::PlaybackThread::streamMute(int stream) const 1322{ 1323 return mStreamTypes[stream].mute; 1324} 1325 1326// addTrack_l() must be called with ThreadBase::mLock held 1327status_t AudioFlinger::PlaybackThread::addTrack_l(const sp<Track>& track) 1328{ 1329 status_t status = ALREADY_EXISTS; 1330 1331 // set retry count for buffer fill 1332 track->mRetryCount = kMaxTrackStartupRetries; 1333 if (mActiveTracks.indexOf(track) < 0) { 1334 // the track is newly added, make sure it fills up all its 1335 // buffers before playing. This is to ensure the client will 1336 // effectively get the latency it requested. 1337 track->mFillingUpStatus = Track::FS_FILLING; 1338 track->mResetDone = false; 1339 mActiveTracks.add(track); 1340 if (track->mainBuffer() != mMixBuffer) { 1341 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1342 if (chain != 0) { 1343 LOGV("addTrack_l() starting track on chain %p for session %d", chain.get(), track->sessionId()); 1344 chain->incActiveTrackCnt(); 1345 } 1346 } 1347 1348 status = NO_ERROR; 1349 } 1350 1351 LOGV("mWaitWorkCV.broadcast"); 1352 mWaitWorkCV.broadcast(); 1353 1354 return status; 1355} 1356 1357// destroyTrack_l() must be called with ThreadBase::mLock held 1358void AudioFlinger::PlaybackThread::destroyTrack_l(const sp<Track>& track) 1359{ 1360 track->mState = TrackBase::TERMINATED; 1361 if (mActiveTracks.indexOf(track) < 0) { 1362 removeTrack_l(track); 1363 } 1364} 1365 1366void AudioFlinger::PlaybackThread::removeTrack_l(const sp<Track>& track) 1367{ 1368 mTracks.remove(track); 1369 deleteTrackName_l(track->name()); 1370 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1371 if (chain != 0) { 1372 chain->decTrackCnt(); 1373 } 1374} 1375 1376String8 AudioFlinger::PlaybackThread::getParameters(const String8& keys) 1377{ 1378 String8 out_s8; 1379 char *s; 1380 1381 s = mOutput->stream->common.get_parameters(&mOutput->stream->common, keys.string()); 1382 out_s8 = String8(s); 1383 free(s); 1384 return out_s8; 1385} 1386 1387// destroyTrack_l() must be called with AudioFlinger::mLock held 1388void AudioFlinger::PlaybackThread::audioConfigChanged_l(int event, int param) { 1389 AudioSystem::OutputDescriptor desc; 1390 void *param2 = 0; 1391 1392 LOGV("PlaybackThread::audioConfigChanged_l, thread %p, event %d, param %d", this, event, param); 1393 1394 switch (event) { 1395 case AudioSystem::OUTPUT_OPENED: 1396 case AudioSystem::OUTPUT_CONFIG_CHANGED: 1397 desc.channels = mChannels; 1398 desc.samplingRate = mSampleRate; 1399 desc.format = mFormat; 1400 desc.frameCount = mFrameCount; 1401 desc.latency = latency(); 1402 param2 = &desc; 1403 break; 1404 1405 case AudioSystem::STREAM_CONFIG_CHANGED: 1406 param2 = ¶m; 1407 case AudioSystem::OUTPUT_CLOSED: 1408 default: 1409 break; 1410 } 1411 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 1412} 1413 1414void AudioFlinger::PlaybackThread::readOutputParameters() 1415{ 1416 mSampleRate = mOutput->stream->common.get_sample_rate(&mOutput->stream->common); 1417 mChannels = mOutput->stream->common.get_channels(&mOutput->stream->common); 1418 mChannelCount = (uint16_t)popcount(mChannels); 1419 mFormat = mOutput->stream->common.get_format(&mOutput->stream->common); 1420 mFrameSize = (uint16_t)audio_stream_frame_size(&mOutput->stream->common); 1421 mFrameCount = mOutput->stream->common.get_buffer_size(&mOutput->stream->common) / mFrameSize; 1422 1423 // FIXME - Current mixer implementation only supports stereo output: Always 1424 // Allocate a stereo buffer even if HW output is mono. 1425 if (mMixBuffer != NULL) delete[] mMixBuffer; 1426 mMixBuffer = new int16_t[mFrameCount * 2]; 1427 memset(mMixBuffer, 0, mFrameCount * 2 * sizeof(int16_t)); 1428 1429 // force reconfiguration of effect chains and engines to take new buffer size and audio 1430 // parameters into account 1431 // Note that mLock is not held when readOutputParameters() is called from the constructor 1432 // but in this case nothing is done below as no audio sessions have effect yet so it doesn't 1433 // matter. 1434 // create a copy of mEffectChains as calling moveEffectChain_l() can reorder some effect chains 1435 Vector< sp<EffectChain> > effectChains = mEffectChains; 1436 for (size_t i = 0; i < effectChains.size(); i ++) { 1437 mAudioFlinger->moveEffectChain_l(effectChains[i]->sessionId(), this, this, false); 1438 } 1439} 1440 1441status_t AudioFlinger::PlaybackThread::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames) 1442{ 1443 if (halFrames == 0 || dspFrames == 0) { 1444 return BAD_VALUE; 1445 } 1446 if (mOutput == 0) { 1447 return INVALID_OPERATION; 1448 } 1449 *halFrames = mBytesWritten / audio_stream_frame_size(&mOutput->stream->common); 1450 1451 return mOutput->stream->get_render_position(mOutput->stream, dspFrames); 1452} 1453 1454uint32_t AudioFlinger::PlaybackThread::hasAudioSession(int sessionId) 1455{ 1456 Mutex::Autolock _l(mLock); 1457 uint32_t result = 0; 1458 if (getEffectChain_l(sessionId) != 0) { 1459 result = EFFECT_SESSION; 1460 } 1461 1462 for (size_t i = 0; i < mTracks.size(); ++i) { 1463 sp<Track> track = mTracks[i]; 1464 if (sessionId == track->sessionId() && 1465 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1466 result |= TRACK_SESSION; 1467 break; 1468 } 1469 } 1470 1471 return result; 1472} 1473 1474uint32_t AudioFlinger::PlaybackThread::getStrategyForSession_l(int sessionId) 1475{ 1476 // session AUDIO_SESSION_OUTPUT_MIX is placed in same strategy as MUSIC stream so that 1477 // it is moved to correct output by audio policy manager when A2DP is connected or disconnected 1478 if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 1479 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1480 } 1481 for (size_t i = 0; i < mTracks.size(); i++) { 1482 sp<Track> track = mTracks[i]; 1483 if (sessionId == track->sessionId() && 1484 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1485 return AudioSystem::getStrategyForStream((audio_stream_type_t) track->type()); 1486 } 1487 } 1488 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1489} 1490 1491sp<AudioFlinger::EffectChain> AudioFlinger::PlaybackThread::getEffectChain(int sessionId) 1492{ 1493 Mutex::Autolock _l(mLock); 1494 return getEffectChain_l(sessionId); 1495} 1496 1497sp<AudioFlinger::EffectChain> AudioFlinger::PlaybackThread::getEffectChain_l(int sessionId) 1498{ 1499 sp<EffectChain> chain; 1500 1501 size_t size = mEffectChains.size(); 1502 for (size_t i = 0; i < size; i++) { 1503 if (mEffectChains[i]->sessionId() == sessionId) { 1504 chain = mEffectChains[i]; 1505 break; 1506 } 1507 } 1508 return chain; 1509} 1510 1511void AudioFlinger::PlaybackThread::setMode(uint32_t mode) 1512{ 1513 Mutex::Autolock _l(mLock); 1514 size_t size = mEffectChains.size(); 1515 for (size_t i = 0; i < size; i++) { 1516 mEffectChains[i]->setMode_l(mode); 1517 } 1518} 1519 1520// ---------------------------------------------------------------------------- 1521 1522AudioFlinger::MixerThread::MixerThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 1523 : PlaybackThread(audioFlinger, output, id, device), 1524 mAudioMixer(0) 1525{ 1526 mType = PlaybackThread::MIXER; 1527 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 1528 1529 // FIXME - Current mixer implementation only supports stereo output 1530 if (mChannelCount == 1) { 1531 LOGE("Invalid audio hardware channel count"); 1532 } 1533} 1534 1535AudioFlinger::MixerThread::~MixerThread() 1536{ 1537 delete mAudioMixer; 1538} 1539 1540bool AudioFlinger::MixerThread::threadLoop() 1541{ 1542 Vector< sp<Track> > tracksToRemove; 1543 uint32_t mixerStatus = MIXER_IDLE; 1544 nsecs_t standbyTime = systemTime(); 1545 size_t mixBufferSize = mFrameCount * mFrameSize; 1546 // FIXME: Relaxed timing because of a certain device that can't meet latency 1547 // Should be reduced to 2x after the vendor fixes the driver issue 1548 nsecs_t maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1549 nsecs_t lastWarning = 0; 1550 bool longStandbyExit = false; 1551 uint32_t activeSleepTime = activeSleepTimeUs(); 1552 uint32_t idleSleepTime = idleSleepTimeUs(); 1553 uint32_t sleepTime = idleSleepTime; 1554 Vector< sp<EffectChain> > effectChains; 1555 1556 while (!exitPending()) 1557 { 1558 processConfigEvents(); 1559 1560 mixerStatus = MIXER_IDLE; 1561 { // scope for mLock 1562 1563 Mutex::Autolock _l(mLock); 1564 1565 if (checkForNewParameters_l()) { 1566 mixBufferSize = mFrameCount * mFrameSize; 1567 // FIXME: Relaxed timing because of a certain device that can't meet latency 1568 // Should be reduced to 2x after the vendor fixes the driver issue 1569 maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1570 activeSleepTime = activeSleepTimeUs(); 1571 idleSleepTime = idleSleepTimeUs(); 1572 } 1573 1574 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 1575 1576 // put audio hardware into standby after short delay 1577 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 1578 mSuspended) { 1579 if (!mStandby) { 1580 LOGV("Audio hardware entering standby, mixer %p, mSuspended %d\n", this, mSuspended); 1581 mOutput->stream->common.standby(&mOutput->stream->common); 1582 mStandby = true; 1583 mBytesWritten = 0; 1584 } 1585 1586 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 1587 // we're about to wait, flush the binder command buffer 1588 IPCThreadState::self()->flushCommands(); 1589 1590 if (exitPending()) break; 1591 1592 // wait until we have something to do... 1593 LOGV("MixerThread %p TID %d going to sleep\n", this, gettid()); 1594 mWaitWorkCV.wait(mLock); 1595 LOGV("MixerThread %p TID %d waking up\n", this, gettid()); 1596 1597 if (mMasterMute == false) { 1598 char value[PROPERTY_VALUE_MAX]; 1599 property_get("ro.audio.silent", value, "0"); 1600 if (atoi(value)) { 1601 LOGD("Silence is golden"); 1602 setMasterMute(true); 1603 } 1604 } 1605 1606 standbyTime = systemTime() + kStandbyTimeInNsecs; 1607 sleepTime = idleSleepTime; 1608 continue; 1609 } 1610 } 1611 1612 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 1613 1614 // prevent any changes in effect chain list and in each effect chain 1615 // during mixing and effect process as the audio buffers could be deleted 1616 // or modified if an effect is created or deleted 1617 lockEffectChains_l(effectChains); 1618 } 1619 1620 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 1621 // mix buffers... 1622 mAudioMixer->process(); 1623 sleepTime = 0; 1624 standbyTime = systemTime() + kStandbyTimeInNsecs; 1625 //TODO: delay standby when effects have a tail 1626 } else { 1627 // If no tracks are ready, sleep once for the duration of an output 1628 // buffer size, then write 0s to the output 1629 if (sleepTime == 0) { 1630 if (mixerStatus == MIXER_TRACKS_ENABLED) { 1631 sleepTime = activeSleepTime; 1632 } else { 1633 sleepTime = idleSleepTime; 1634 } 1635 } else if (mBytesWritten != 0 || 1636 (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)) { 1637 memset (mMixBuffer, 0, mixBufferSize); 1638 sleepTime = 0; 1639 LOGV_IF((mBytesWritten == 0 && (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)), "anticipated start"); 1640 } 1641 // TODO add standby time extension fct of effect tail 1642 } 1643 1644 if (mSuspended) { 1645 sleepTime = suspendSleepTimeUs(); 1646 } 1647 // sleepTime == 0 means we must write to audio hardware 1648 if (sleepTime == 0) { 1649 for (size_t i = 0; i < effectChains.size(); i ++) { 1650 effectChains[i]->process_l(); 1651 } 1652 // enable changes in effect chain 1653 unlockEffectChains(effectChains); 1654 mLastWriteTime = systemTime(); 1655 mInWrite = true; 1656 mBytesWritten += mixBufferSize; 1657 1658 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 1659 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 1660 mNumWrites++; 1661 mInWrite = false; 1662 nsecs_t now = systemTime(); 1663 nsecs_t delta = now - mLastWriteTime; 1664 if (delta > maxPeriod) { 1665 mNumDelayedWrites++; 1666 if ((now - lastWarning) > kWarningThrottle) { 1667 LOGW("write blocked for %llu msecs, %d delayed writes, thread %p", 1668 ns2ms(delta), mNumDelayedWrites, this); 1669 lastWarning = now; 1670 } 1671 if (mStandby) { 1672 longStandbyExit = true; 1673 } 1674 } 1675 mStandby = false; 1676 } else { 1677 // enable changes in effect chain 1678 unlockEffectChains(effectChains); 1679 usleep(sleepTime); 1680 } 1681 1682 // finally let go of all our tracks, without the lock held 1683 // since we can't guarantee the destructors won't acquire that 1684 // same lock. 1685 tracksToRemove.clear(); 1686 1687 // Effect chains will be actually deleted here if they were removed from 1688 // mEffectChains list during mixing or effects processing 1689 effectChains.clear(); 1690 } 1691 1692 if (!mStandby) { 1693 mOutput->stream->common.standby(&mOutput->stream->common); 1694 } 1695 1696 LOGV("MixerThread %p exiting", this); 1697 return false; 1698} 1699 1700// prepareTracks_l() must be called with ThreadBase::mLock held 1701uint32_t AudioFlinger::MixerThread::prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, Vector< sp<Track> > *tracksToRemove) 1702{ 1703 1704 uint32_t mixerStatus = MIXER_IDLE; 1705 // find out which tracks need to be processed 1706 size_t count = activeTracks.size(); 1707 size_t mixedTracks = 0; 1708 size_t tracksWithEffect = 0; 1709 1710 float masterVolume = mMasterVolume; 1711 bool masterMute = mMasterMute; 1712 1713 if (masterMute) { 1714 masterVolume = 0; 1715 } 1716 // Delegate master volume control to effect in output mix effect chain if needed 1717 sp<EffectChain> chain = getEffectChain_l(AUDIO_SESSION_OUTPUT_MIX); 1718 if (chain != 0) { 1719 uint32_t v = (uint32_t)(masterVolume * (1 << 24)); 1720 chain->setVolume_l(&v, &v); 1721 masterVolume = (float)((v + (1 << 23)) >> 24); 1722 chain.clear(); 1723 } 1724 1725 for (size_t i=0 ; i<count ; i++) { 1726 sp<Track> t = activeTracks[i].promote(); 1727 if (t == 0) continue; 1728 1729 Track* const track = t.get(); 1730 audio_track_cblk_t* cblk = track->cblk(); 1731 1732 // The first time a track is added we wait 1733 // for all its buffers to be filled before processing it 1734 mAudioMixer->setActiveTrack(track->name()); 1735 if (cblk->framesReady() && track->isReady() && 1736 !track->isPaused() && !track->isTerminated()) 1737 { 1738 //LOGV("track %d u=%08x, s=%08x [OK] on thread %p", track->name(), cblk->user, cblk->server, this); 1739 1740 mixedTracks++; 1741 1742 // track->mainBuffer() != mMixBuffer means there is an effect chain 1743 // connected to the track 1744 chain.clear(); 1745 if (track->mainBuffer() != mMixBuffer) { 1746 chain = getEffectChain_l(track->sessionId()); 1747 // Delegate volume control to effect in track effect chain if needed 1748 if (chain != 0) { 1749 tracksWithEffect++; 1750 } else { 1751 LOGW("prepareTracks_l(): track %08x attached to effect but no chain found on session %d", 1752 track->name(), track->sessionId()); 1753 } 1754 } 1755 1756 1757 int param = AudioMixer::VOLUME; 1758 if (track->mFillingUpStatus == Track::FS_FILLED) { 1759 // no ramp for the first volume setting 1760 track->mFillingUpStatus = Track::FS_ACTIVE; 1761 if (track->mState == TrackBase::RESUMING) { 1762 track->mState = TrackBase::ACTIVE; 1763 param = AudioMixer::RAMP_VOLUME; 1764 } 1765 mAudioMixer->setParameter(AudioMixer::RESAMPLE, AudioMixer::RESET, NULL); 1766 } else if (cblk->server != 0) { 1767 // If the track is stopped before the first frame was mixed, 1768 // do not apply ramp 1769 param = AudioMixer::RAMP_VOLUME; 1770 } 1771 1772 // compute volume for this track 1773 uint32_t vl, vr, va; 1774 if (track->isMuted() || track->isPausing() || 1775 mStreamTypes[track->type()].mute) { 1776 vl = vr = va = 0; 1777 if (track->isPausing()) { 1778 track->setPaused(); 1779 } 1780 } else { 1781 1782 // read original volumes with volume control 1783 float typeVolume = mStreamTypes[track->type()].volume; 1784 float v = masterVolume * typeVolume; 1785 vl = (uint32_t)(v * cblk->volume[0]) << 12; 1786 vr = (uint32_t)(v * cblk->volume[1]) << 12; 1787 1788 va = (uint32_t)(v * cblk->sendLevel); 1789 } 1790 // Delegate volume control to effect in track effect chain if needed 1791 if (chain != 0 && chain->setVolume_l(&vl, &vr)) { 1792 // Do not ramp volume if volume is controlled by effect 1793 param = AudioMixer::VOLUME; 1794 track->mHasVolumeController = true; 1795 } else { 1796 // force no volume ramp when volume controller was just disabled or removed 1797 // from effect chain to avoid volume spike 1798 if (track->mHasVolumeController) { 1799 param = AudioMixer::VOLUME; 1800 } 1801 track->mHasVolumeController = false; 1802 } 1803 1804 // Convert volumes from 8.24 to 4.12 format 1805 int16_t left, right, aux; 1806 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 1807 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 1808 left = int16_t(v_clamped); 1809 v_clamped = (vr + (1 << 11)) >> 12; 1810 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 1811 right = int16_t(v_clamped); 1812 1813 if (va > MAX_GAIN_INT) va = MAX_GAIN_INT; 1814 aux = int16_t(va); 1815 1816 // XXX: these things DON'T need to be done each time 1817 mAudioMixer->setBufferProvider(track); 1818 mAudioMixer->enable(AudioMixer::MIXING); 1819 1820 mAudioMixer->setParameter(param, AudioMixer::VOLUME0, (void *)left); 1821 mAudioMixer->setParameter(param, AudioMixer::VOLUME1, (void *)right); 1822 mAudioMixer->setParameter(param, AudioMixer::AUXLEVEL, (void *)aux); 1823 mAudioMixer->setParameter( 1824 AudioMixer::TRACK, 1825 AudioMixer::FORMAT, (void *)track->format()); 1826 mAudioMixer->setParameter( 1827 AudioMixer::TRACK, 1828 AudioMixer::CHANNEL_COUNT, (void *)track->channelCount()); 1829 mAudioMixer->setParameter( 1830 AudioMixer::RESAMPLE, 1831 AudioMixer::SAMPLE_RATE, 1832 (void *)(cblk->sampleRate)); 1833 mAudioMixer->setParameter( 1834 AudioMixer::TRACK, 1835 AudioMixer::MAIN_BUFFER, (void *)track->mainBuffer()); 1836 mAudioMixer->setParameter( 1837 AudioMixer::TRACK, 1838 AudioMixer::AUX_BUFFER, (void *)track->auxBuffer()); 1839 1840 // reset retry count 1841 track->mRetryCount = kMaxTrackRetries; 1842 mixerStatus = MIXER_TRACKS_READY; 1843 } else { 1844 //LOGV("track %d u=%08x, s=%08x [NOT READY] on thread %p", track->name(), cblk->user, cblk->server, this); 1845 if (track->isStopped()) { 1846 track->reset(); 1847 } 1848 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 1849 // We have consumed all the buffers of this track. 1850 // Remove it from the list of active tracks. 1851 tracksToRemove->add(track); 1852 } else { 1853 // No buffers for this track. Give it a few chances to 1854 // fill a buffer, then remove it from active list. 1855 if (--(track->mRetryCount) <= 0) { 1856 LOGV("BUFFER TIMEOUT: remove(%d) from active list on thread %p", track->name(), this); 1857 tracksToRemove->add(track); 1858 // indicate to client process that the track was disabled because of underrun 1859 android_atomic_or(CBLK_DISABLED_ON, &cblk->flags); 1860 } else if (mixerStatus != MIXER_TRACKS_READY) { 1861 mixerStatus = MIXER_TRACKS_ENABLED; 1862 } 1863 } 1864 mAudioMixer->disable(AudioMixer::MIXING); 1865 } 1866 } 1867 1868 // remove all the tracks that need to be... 1869 count = tracksToRemove->size(); 1870 if (UNLIKELY(count)) { 1871 for (size_t i=0 ; i<count ; i++) { 1872 const sp<Track>& track = tracksToRemove->itemAt(i); 1873 mActiveTracks.remove(track); 1874 if (track->mainBuffer() != mMixBuffer) { 1875 chain = getEffectChain_l(track->sessionId()); 1876 if (chain != 0) { 1877 LOGV("stopping track on chain %p for session Id: %d", chain.get(), track->sessionId()); 1878 chain->decActiveTrackCnt(); 1879 } 1880 } 1881 if (track->isTerminated()) { 1882 removeTrack_l(track); 1883 } 1884 } 1885 } 1886 1887 // mix buffer must be cleared if all tracks are connected to an 1888 // effect chain as in this case the mixer will not write to 1889 // mix buffer and track effects will accumulate into it 1890 if (mixedTracks != 0 && mixedTracks == tracksWithEffect) { 1891 memset(mMixBuffer, 0, mFrameCount * mChannelCount * sizeof(int16_t)); 1892 } 1893 1894 return mixerStatus; 1895} 1896 1897void AudioFlinger::MixerThread::invalidateTracks(int streamType) 1898{ 1899 LOGV ("MixerThread::invalidateTracks() mixer %p, streamType %d, mTracks.size %d", 1900 this, streamType, mTracks.size()); 1901 Mutex::Autolock _l(mLock); 1902 1903 size_t size = mTracks.size(); 1904 for (size_t i = 0; i < size; i++) { 1905 sp<Track> t = mTracks[i]; 1906 if (t->type() == streamType) { 1907 android_atomic_or(CBLK_INVALID_ON, &t->mCblk->flags); 1908 t->mCblk->cv.signal(); 1909 } 1910 } 1911} 1912 1913 1914// getTrackName_l() must be called with ThreadBase::mLock held 1915int AudioFlinger::MixerThread::getTrackName_l() 1916{ 1917 return mAudioMixer->getTrackName(); 1918} 1919 1920// deleteTrackName_l() must be called with ThreadBase::mLock held 1921void AudioFlinger::MixerThread::deleteTrackName_l(int name) 1922{ 1923 LOGV("remove track (%d) and delete from mixer", name); 1924 mAudioMixer->deleteTrackName(name); 1925} 1926 1927// checkForNewParameters_l() must be called with ThreadBase::mLock held 1928bool AudioFlinger::MixerThread::checkForNewParameters_l() 1929{ 1930 bool reconfig = false; 1931 1932 while (!mNewParameters.isEmpty()) { 1933 status_t status = NO_ERROR; 1934 String8 keyValuePair = mNewParameters[0]; 1935 AudioParameter param = AudioParameter(keyValuePair); 1936 int value; 1937 1938 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 1939 reconfig = true; 1940 } 1941 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 1942 if (value != AUDIO_FORMAT_PCM_16_BIT) { 1943 status = BAD_VALUE; 1944 } else { 1945 reconfig = true; 1946 } 1947 } 1948 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 1949 if (value != AUDIO_CHANNEL_OUT_STEREO) { 1950 status = BAD_VALUE; 1951 } else { 1952 reconfig = true; 1953 } 1954 } 1955 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 1956 // do not accept frame count changes if tracks are open as the track buffer 1957 // size depends on frame count and correct behavior would not be garantied 1958 // if frame count is changed after track creation 1959 if (!mTracks.isEmpty()) { 1960 status = INVALID_OPERATION; 1961 } else { 1962 reconfig = true; 1963 } 1964 } 1965 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 1966 // when changing the audio output device, call addBatteryData to notify 1967 // the change 1968 if ((int)mDevice != value) { 1969 uint32_t params = 0; 1970 // check whether speaker is on 1971 if (value & AUDIO_DEVICE_OUT_SPEAKER) { 1972 params |= IMediaPlayerService::kBatteryDataSpeakerOn; 1973 } 1974 1975 int deviceWithoutSpeaker 1976 = AUDIO_DEVICE_OUT_ALL & ~AUDIO_DEVICE_OUT_SPEAKER; 1977 // check if any other device (except speaker) is on 1978 if (value & deviceWithoutSpeaker ) { 1979 params |= IMediaPlayerService::kBatteryDataOtherAudioDeviceOn; 1980 } 1981 1982 if (params != 0) { 1983 addBatteryData(params); 1984 } 1985 } 1986 1987 // forward device change to effects that have requested to be 1988 // aware of attached audio device. 1989 mDevice = (uint32_t)value; 1990 for (size_t i = 0; i < mEffectChains.size(); i++) { 1991 mEffectChains[i]->setDevice_l(mDevice); 1992 } 1993 } 1994 1995 if (status == NO_ERROR) { 1996 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 1997 keyValuePair.string()); 1998 if (!mStandby && status == INVALID_OPERATION) { 1999 mOutput->stream->common.standby(&mOutput->stream->common); 2000 mStandby = true; 2001 mBytesWritten = 0; 2002 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2003 keyValuePair.string()); 2004 } 2005 if (status == NO_ERROR && reconfig) { 2006 delete mAudioMixer; 2007 readOutputParameters(); 2008 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 2009 for (size_t i = 0; i < mTracks.size() ; i++) { 2010 int name = getTrackName_l(); 2011 if (name < 0) break; 2012 mTracks[i]->mName = name; 2013 // limit track sample rate to 2 x new output sample rate 2014 if (mTracks[i]->mCblk->sampleRate > 2 * sampleRate()) { 2015 mTracks[i]->mCblk->sampleRate = 2 * sampleRate(); 2016 } 2017 } 2018 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2019 } 2020 } 2021 2022 mNewParameters.removeAt(0); 2023 2024 mParamStatus = status; 2025 mParamCond.signal(); 2026 mWaitWorkCV.wait(mLock); 2027 } 2028 return reconfig; 2029} 2030 2031status_t AudioFlinger::MixerThread::dumpInternals(int fd, const Vector<String16>& args) 2032{ 2033 const size_t SIZE = 256; 2034 char buffer[SIZE]; 2035 String8 result; 2036 2037 PlaybackThread::dumpInternals(fd, args); 2038 2039 snprintf(buffer, SIZE, "AudioMixer tracks: %08x\n", mAudioMixer->trackNames()); 2040 result.append(buffer); 2041 write(fd, result.string(), result.size()); 2042 return NO_ERROR; 2043} 2044 2045uint32_t AudioFlinger::MixerThread::activeSleepTimeUs() 2046{ 2047 return (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2048} 2049 2050uint32_t AudioFlinger::MixerThread::idleSleepTimeUs() 2051{ 2052 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2053} 2054 2055uint32_t AudioFlinger::MixerThread::suspendSleepTimeUs() 2056{ 2057 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2058} 2059 2060// ---------------------------------------------------------------------------- 2061AudioFlinger::DirectOutputThread::DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 2062 : PlaybackThread(audioFlinger, output, id, device) 2063{ 2064 mType = PlaybackThread::DIRECT; 2065} 2066 2067AudioFlinger::DirectOutputThread::~DirectOutputThread() 2068{ 2069} 2070 2071 2072static inline int16_t clamp16(int32_t sample) 2073{ 2074 if ((sample>>15) ^ (sample>>31)) 2075 sample = 0x7FFF ^ (sample>>31); 2076 return sample; 2077} 2078 2079static inline 2080int32_t mul(int16_t in, int16_t v) 2081{ 2082#if defined(__arm__) && !defined(__thumb__) 2083 int32_t out; 2084 asm( "smulbb %[out], %[in], %[v] \n" 2085 : [out]"=r"(out) 2086 : [in]"%r"(in), [v]"r"(v) 2087 : ); 2088 return out; 2089#else 2090 return in * int32_t(v); 2091#endif 2092} 2093 2094void AudioFlinger::DirectOutputThread::applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp) 2095{ 2096 // Do not apply volume on compressed audio 2097 if (!audio_is_linear_pcm(mFormat)) { 2098 return; 2099 } 2100 2101 // convert to signed 16 bit before volume calculation 2102 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2103 size_t count = mFrameCount * mChannelCount; 2104 uint8_t *src = (uint8_t *)mMixBuffer + count-1; 2105 int16_t *dst = mMixBuffer + count-1; 2106 while(count--) { 2107 *dst-- = (int16_t)(*src--^0x80) << 8; 2108 } 2109 } 2110 2111 size_t frameCount = mFrameCount; 2112 int16_t *out = mMixBuffer; 2113 if (ramp) { 2114 if (mChannelCount == 1) { 2115 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2116 int32_t vlInc = d / (int32_t)frameCount; 2117 int32_t vl = ((int32_t)mLeftVolShort << 16); 2118 do { 2119 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2120 out++; 2121 vl += vlInc; 2122 } while (--frameCount); 2123 2124 } else { 2125 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2126 int32_t vlInc = d / (int32_t)frameCount; 2127 d = ((int32_t)rightVol - (int32_t)mRightVolShort) << 16; 2128 int32_t vrInc = d / (int32_t)frameCount; 2129 int32_t vl = ((int32_t)mLeftVolShort << 16); 2130 int32_t vr = ((int32_t)mRightVolShort << 16); 2131 do { 2132 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2133 out[1] = clamp16(mul(out[1], vr >> 16) >> 12); 2134 out += 2; 2135 vl += vlInc; 2136 vr += vrInc; 2137 } while (--frameCount); 2138 } 2139 } else { 2140 if (mChannelCount == 1) { 2141 do { 2142 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2143 out++; 2144 } while (--frameCount); 2145 } else { 2146 do { 2147 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2148 out[1] = clamp16(mul(out[1], rightVol) >> 12); 2149 out += 2; 2150 } while (--frameCount); 2151 } 2152 } 2153 2154 // convert back to unsigned 8 bit after volume calculation 2155 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2156 size_t count = mFrameCount * mChannelCount; 2157 int16_t *src = mMixBuffer; 2158 uint8_t *dst = (uint8_t *)mMixBuffer; 2159 while(count--) { 2160 *dst++ = (uint8_t)(((int32_t)*src++ + (1<<7)) >> 8)^0x80; 2161 } 2162 } 2163 2164 mLeftVolShort = leftVol; 2165 mRightVolShort = rightVol; 2166} 2167 2168bool AudioFlinger::DirectOutputThread::threadLoop() 2169{ 2170 uint32_t mixerStatus = MIXER_IDLE; 2171 sp<Track> trackToRemove; 2172 sp<Track> activeTrack; 2173 nsecs_t standbyTime = systemTime(); 2174 int8_t *curBuf; 2175 size_t mixBufferSize = mFrameCount*mFrameSize; 2176 uint32_t activeSleepTime = activeSleepTimeUs(); 2177 uint32_t idleSleepTime = idleSleepTimeUs(); 2178 uint32_t sleepTime = idleSleepTime; 2179 // use shorter standby delay as on normal output to release 2180 // hardware resources as soon as possible 2181 nsecs_t standbyDelay = microseconds(activeSleepTime*2); 2182 2183 while (!exitPending()) 2184 { 2185 bool rampVolume; 2186 uint16_t leftVol; 2187 uint16_t rightVol; 2188 Vector< sp<EffectChain> > effectChains; 2189 2190 processConfigEvents(); 2191 2192 mixerStatus = MIXER_IDLE; 2193 2194 { // scope for the mLock 2195 2196 Mutex::Autolock _l(mLock); 2197 2198 if (checkForNewParameters_l()) { 2199 mixBufferSize = mFrameCount*mFrameSize; 2200 activeSleepTime = activeSleepTimeUs(); 2201 idleSleepTime = idleSleepTimeUs(); 2202 standbyDelay = microseconds(activeSleepTime*2); 2203 } 2204 2205 // put audio hardware into standby after short delay 2206 if UNLIKELY((!mActiveTracks.size() && systemTime() > standbyTime) || 2207 mSuspended) { 2208 // wait until we have something to do... 2209 if (!mStandby) { 2210 LOGV("Audio hardware entering standby, mixer %p\n", this); 2211 mOutput->stream->common.standby(&mOutput->stream->common); 2212 mStandby = true; 2213 mBytesWritten = 0; 2214 } 2215 2216 if (!mActiveTracks.size() && mConfigEvents.isEmpty()) { 2217 // we're about to wait, flush the binder command buffer 2218 IPCThreadState::self()->flushCommands(); 2219 2220 if (exitPending()) break; 2221 2222 LOGV("DirectOutputThread %p TID %d going to sleep\n", this, gettid()); 2223 mWaitWorkCV.wait(mLock); 2224 LOGV("DirectOutputThread %p TID %d waking up in active mode\n", this, gettid()); 2225 2226 if (mMasterMute == false) { 2227 char value[PROPERTY_VALUE_MAX]; 2228 property_get("ro.audio.silent", value, "0"); 2229 if (atoi(value)) { 2230 LOGD("Silence is golden"); 2231 setMasterMute(true); 2232 } 2233 } 2234 2235 standbyTime = systemTime() + standbyDelay; 2236 sleepTime = idleSleepTime; 2237 continue; 2238 } 2239 } 2240 2241 effectChains = mEffectChains; 2242 2243 // find out which tracks need to be processed 2244 if (mActiveTracks.size() != 0) { 2245 sp<Track> t = mActiveTracks[0].promote(); 2246 if (t == 0) continue; 2247 2248 Track* const track = t.get(); 2249 audio_track_cblk_t* cblk = track->cblk(); 2250 2251 // The first time a track is added we wait 2252 // for all its buffers to be filled before processing it 2253 if (cblk->framesReady() && track->isReady() && 2254 !track->isPaused() && !track->isTerminated()) 2255 { 2256 //LOGV("track %d u=%08x, s=%08x [OK]", track->name(), cblk->user, cblk->server); 2257 2258 if (track->mFillingUpStatus == Track::FS_FILLED) { 2259 track->mFillingUpStatus = Track::FS_ACTIVE; 2260 mLeftVolFloat = mRightVolFloat = 0; 2261 mLeftVolShort = mRightVolShort = 0; 2262 if (track->mState == TrackBase::RESUMING) { 2263 track->mState = TrackBase::ACTIVE; 2264 rampVolume = true; 2265 } 2266 } else if (cblk->server != 0) { 2267 // If the track is stopped before the first frame was mixed, 2268 // do not apply ramp 2269 rampVolume = true; 2270 } 2271 // compute volume for this track 2272 float left, right; 2273 if (track->isMuted() || mMasterMute || track->isPausing() || 2274 mStreamTypes[track->type()].mute) { 2275 left = right = 0; 2276 if (track->isPausing()) { 2277 track->setPaused(); 2278 } 2279 } else { 2280 float typeVolume = mStreamTypes[track->type()].volume; 2281 float v = mMasterVolume * typeVolume; 2282 float v_clamped = v * cblk->volume[0]; 2283 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2284 left = v_clamped/MAX_GAIN; 2285 v_clamped = v * cblk->volume[1]; 2286 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2287 right = v_clamped/MAX_GAIN; 2288 } 2289 2290 if (left != mLeftVolFloat || right != mRightVolFloat) { 2291 mLeftVolFloat = left; 2292 mRightVolFloat = right; 2293 2294 // If audio HAL implements volume control, 2295 // force software volume to nominal value 2296 if (mOutput->stream->set_volume(mOutput->stream, left, right) == NO_ERROR) { 2297 left = 1.0f; 2298 right = 1.0f; 2299 } 2300 2301 // Convert volumes from float to 8.24 2302 uint32_t vl = (uint32_t)(left * (1 << 24)); 2303 uint32_t vr = (uint32_t)(right * (1 << 24)); 2304 2305 // Delegate volume control to effect in track effect chain if needed 2306 // only one effect chain can be present on DirectOutputThread, so if 2307 // there is one, the track is connected to it 2308 if (!effectChains.isEmpty()) { 2309 // Do not ramp volume if volume is controlled by effect 2310 if(effectChains[0]->setVolume_l(&vl, &vr)) { 2311 rampVolume = false; 2312 } 2313 } 2314 2315 // Convert volumes from 8.24 to 4.12 format 2316 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 2317 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2318 leftVol = (uint16_t)v_clamped; 2319 v_clamped = (vr + (1 << 11)) >> 12; 2320 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2321 rightVol = (uint16_t)v_clamped; 2322 } else { 2323 leftVol = mLeftVolShort; 2324 rightVol = mRightVolShort; 2325 rampVolume = false; 2326 } 2327 2328 // reset retry count 2329 track->mRetryCount = kMaxTrackRetriesDirect; 2330 activeTrack = t; 2331 mixerStatus = MIXER_TRACKS_READY; 2332 } else { 2333 //LOGV("track %d u=%08x, s=%08x [NOT READY]", track->name(), cblk->user, cblk->server); 2334 if (track->isStopped()) { 2335 track->reset(); 2336 } 2337 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 2338 // We have consumed all the buffers of this track. 2339 // Remove it from the list of active tracks. 2340 trackToRemove = track; 2341 } else { 2342 // No buffers for this track. Give it a few chances to 2343 // fill a buffer, then remove it from active list. 2344 if (--(track->mRetryCount) <= 0) { 2345 LOGV("BUFFER TIMEOUT: remove(%d) from active list", track->name()); 2346 trackToRemove = track; 2347 } else { 2348 mixerStatus = MIXER_TRACKS_ENABLED; 2349 } 2350 } 2351 } 2352 } 2353 2354 // remove all the tracks that need to be... 2355 if (UNLIKELY(trackToRemove != 0)) { 2356 mActiveTracks.remove(trackToRemove); 2357 if (!effectChains.isEmpty()) { 2358 LOGV("stopping track on chain %p for session Id: %d", effectChains[0].get(), 2359 trackToRemove->sessionId()); 2360 effectChains[0]->decActiveTrackCnt(); 2361 } 2362 if (trackToRemove->isTerminated()) { 2363 removeTrack_l(trackToRemove); 2364 } 2365 } 2366 2367 lockEffectChains_l(effectChains); 2368 } 2369 2370 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2371 AudioBufferProvider::Buffer buffer; 2372 size_t frameCount = mFrameCount; 2373 curBuf = (int8_t *)mMixBuffer; 2374 // output audio to hardware 2375 while (frameCount) { 2376 buffer.frameCount = frameCount; 2377 activeTrack->getNextBuffer(&buffer); 2378 if (UNLIKELY(buffer.raw == 0)) { 2379 memset(curBuf, 0, frameCount * mFrameSize); 2380 break; 2381 } 2382 memcpy(curBuf, buffer.raw, buffer.frameCount * mFrameSize); 2383 frameCount -= buffer.frameCount; 2384 curBuf += buffer.frameCount * mFrameSize; 2385 activeTrack->releaseBuffer(&buffer); 2386 } 2387 sleepTime = 0; 2388 standbyTime = systemTime() + standbyDelay; 2389 } else { 2390 if (sleepTime == 0) { 2391 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2392 sleepTime = activeSleepTime; 2393 } else { 2394 sleepTime = idleSleepTime; 2395 } 2396 } else if (mBytesWritten != 0 && audio_is_linear_pcm(mFormat)) { 2397 memset (mMixBuffer, 0, mFrameCount * mFrameSize); 2398 sleepTime = 0; 2399 } 2400 } 2401 2402 if (mSuspended) { 2403 sleepTime = suspendSleepTimeUs(); 2404 } 2405 // sleepTime == 0 means we must write to audio hardware 2406 if (sleepTime == 0) { 2407 if (mixerStatus == MIXER_TRACKS_READY) { 2408 applyVolume(leftVol, rightVol, rampVolume); 2409 } 2410 for (size_t i = 0; i < effectChains.size(); i ++) { 2411 effectChains[i]->process_l(); 2412 } 2413 unlockEffectChains(effectChains); 2414 2415 mLastWriteTime = systemTime(); 2416 mInWrite = true; 2417 mBytesWritten += mixBufferSize; 2418 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 2419 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 2420 mNumWrites++; 2421 mInWrite = false; 2422 mStandby = false; 2423 } else { 2424 unlockEffectChains(effectChains); 2425 usleep(sleepTime); 2426 } 2427 2428 // finally let go of removed track, without the lock held 2429 // since we can't guarantee the destructors won't acquire that 2430 // same lock. 2431 trackToRemove.clear(); 2432 activeTrack.clear(); 2433 2434 // Effect chains will be actually deleted here if they were removed from 2435 // mEffectChains list during mixing or effects processing 2436 effectChains.clear(); 2437 } 2438 2439 if (!mStandby) { 2440 mOutput->stream->common.standby(&mOutput->stream->common); 2441 } 2442 2443 LOGV("DirectOutputThread %p exiting", this); 2444 return false; 2445} 2446 2447// getTrackName_l() must be called with ThreadBase::mLock held 2448int AudioFlinger::DirectOutputThread::getTrackName_l() 2449{ 2450 return 0; 2451} 2452 2453// deleteTrackName_l() must be called with ThreadBase::mLock held 2454void AudioFlinger::DirectOutputThread::deleteTrackName_l(int name) 2455{ 2456} 2457 2458// checkForNewParameters_l() must be called with ThreadBase::mLock held 2459bool AudioFlinger::DirectOutputThread::checkForNewParameters_l() 2460{ 2461 bool reconfig = false; 2462 2463 while (!mNewParameters.isEmpty()) { 2464 status_t status = NO_ERROR; 2465 String8 keyValuePair = mNewParameters[0]; 2466 AudioParameter param = AudioParameter(keyValuePair); 2467 int value; 2468 2469 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 2470 // do not accept frame count changes if tracks are open as the track buffer 2471 // size depends on frame count and correct behavior would not be garantied 2472 // if frame count is changed after track creation 2473 if (!mTracks.isEmpty()) { 2474 status = INVALID_OPERATION; 2475 } else { 2476 reconfig = true; 2477 } 2478 } 2479 if (status == NO_ERROR) { 2480 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2481 keyValuePair.string()); 2482 if (!mStandby && status == INVALID_OPERATION) { 2483 mOutput->stream->common.standby(&mOutput->stream->common); 2484 mStandby = true; 2485 mBytesWritten = 0; 2486 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2487 keyValuePair.string()); 2488 } 2489 if (status == NO_ERROR && reconfig) { 2490 readOutputParameters(); 2491 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2492 } 2493 } 2494 2495 mNewParameters.removeAt(0); 2496 2497 mParamStatus = status; 2498 mParamCond.signal(); 2499 mWaitWorkCV.wait(mLock); 2500 } 2501 return reconfig; 2502} 2503 2504uint32_t AudioFlinger::DirectOutputThread::activeSleepTimeUs() 2505{ 2506 uint32_t time; 2507 if (audio_is_linear_pcm(mFormat)) { 2508 time = (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2509 } else { 2510 time = 10000; 2511 } 2512 return time; 2513} 2514 2515uint32_t AudioFlinger::DirectOutputThread::idleSleepTimeUs() 2516{ 2517 uint32_t time; 2518 if (audio_is_linear_pcm(mFormat)) { 2519 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2520 } else { 2521 time = 10000; 2522 } 2523 return time; 2524} 2525 2526uint32_t AudioFlinger::DirectOutputThread::suspendSleepTimeUs() 2527{ 2528 uint32_t time; 2529 if (audio_is_linear_pcm(mFormat)) { 2530 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2531 } else { 2532 time = 10000; 2533 } 2534 return time; 2535} 2536 2537 2538// ---------------------------------------------------------------------------- 2539 2540AudioFlinger::DuplicatingThread::DuplicatingThread(const sp<AudioFlinger>& audioFlinger, AudioFlinger::MixerThread* mainThread, int id) 2541 : MixerThread(audioFlinger, mainThread->getOutput(), id, mainThread->device()), mWaitTimeMs(UINT_MAX) 2542{ 2543 mType = PlaybackThread::DUPLICATING; 2544 addOutputTrack(mainThread); 2545} 2546 2547AudioFlinger::DuplicatingThread::~DuplicatingThread() 2548{ 2549 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2550 mOutputTracks[i]->destroy(); 2551 } 2552 mOutputTracks.clear(); 2553} 2554 2555bool AudioFlinger::DuplicatingThread::threadLoop() 2556{ 2557 Vector< sp<Track> > tracksToRemove; 2558 uint32_t mixerStatus = MIXER_IDLE; 2559 nsecs_t standbyTime = systemTime(); 2560 size_t mixBufferSize = mFrameCount*mFrameSize; 2561 SortedVector< sp<OutputTrack> > outputTracks; 2562 uint32_t writeFrames = 0; 2563 uint32_t activeSleepTime = activeSleepTimeUs(); 2564 uint32_t idleSleepTime = idleSleepTimeUs(); 2565 uint32_t sleepTime = idleSleepTime; 2566 Vector< sp<EffectChain> > effectChains; 2567 2568 while (!exitPending()) 2569 { 2570 processConfigEvents(); 2571 2572 mixerStatus = MIXER_IDLE; 2573 { // scope for the mLock 2574 2575 Mutex::Autolock _l(mLock); 2576 2577 if (checkForNewParameters_l()) { 2578 mixBufferSize = mFrameCount*mFrameSize; 2579 updateWaitTime(); 2580 activeSleepTime = activeSleepTimeUs(); 2581 idleSleepTime = idleSleepTimeUs(); 2582 } 2583 2584 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 2585 2586 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2587 outputTracks.add(mOutputTracks[i]); 2588 } 2589 2590 // put audio hardware into standby after short delay 2591 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 2592 mSuspended) { 2593 if (!mStandby) { 2594 for (size_t i = 0; i < outputTracks.size(); i++) { 2595 outputTracks[i]->stop(); 2596 } 2597 mStandby = true; 2598 mBytesWritten = 0; 2599 } 2600 2601 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 2602 // we're about to wait, flush the binder command buffer 2603 IPCThreadState::self()->flushCommands(); 2604 outputTracks.clear(); 2605 2606 if (exitPending()) break; 2607 2608 LOGV("DuplicatingThread %p TID %d going to sleep\n", this, gettid()); 2609 mWaitWorkCV.wait(mLock); 2610 LOGV("DuplicatingThread %p TID %d waking up\n", this, gettid()); 2611 if (mMasterMute == false) { 2612 char value[PROPERTY_VALUE_MAX]; 2613 property_get("ro.audio.silent", value, "0"); 2614 if (atoi(value)) { 2615 LOGD("Silence is golden"); 2616 setMasterMute(true); 2617 } 2618 } 2619 2620 standbyTime = systemTime() + kStandbyTimeInNsecs; 2621 sleepTime = idleSleepTime; 2622 continue; 2623 } 2624 } 2625 2626 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 2627 2628 // prevent any changes in effect chain list and in each effect chain 2629 // during mixing and effect process as the audio buffers could be deleted 2630 // or modified if an effect is created or deleted 2631 lockEffectChains_l(effectChains); 2632 } 2633 2634 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2635 // mix buffers... 2636 if (outputsReady(outputTracks)) { 2637 mAudioMixer->process(); 2638 } else { 2639 memset(mMixBuffer, 0, mixBufferSize); 2640 } 2641 sleepTime = 0; 2642 writeFrames = mFrameCount; 2643 } else { 2644 if (sleepTime == 0) { 2645 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2646 sleepTime = activeSleepTime; 2647 } else { 2648 sleepTime = idleSleepTime; 2649 } 2650 } else if (mBytesWritten != 0) { 2651 // flush remaining overflow buffers in output tracks 2652 for (size_t i = 0; i < outputTracks.size(); i++) { 2653 if (outputTracks[i]->isActive()) { 2654 sleepTime = 0; 2655 writeFrames = 0; 2656 memset(mMixBuffer, 0, mixBufferSize); 2657 break; 2658 } 2659 } 2660 } 2661 } 2662 2663 if (mSuspended) { 2664 sleepTime = suspendSleepTimeUs(); 2665 } 2666 // sleepTime == 0 means we must write to audio hardware 2667 if (sleepTime == 0) { 2668 for (size_t i = 0; i < effectChains.size(); i ++) { 2669 effectChains[i]->process_l(); 2670 } 2671 // enable changes in effect chain 2672 unlockEffectChains(effectChains); 2673 2674 standbyTime = systemTime() + kStandbyTimeInNsecs; 2675 for (size_t i = 0; i < outputTracks.size(); i++) { 2676 outputTracks[i]->write(mMixBuffer, writeFrames); 2677 } 2678 mStandby = false; 2679 mBytesWritten += mixBufferSize; 2680 } else { 2681 // enable changes in effect chain 2682 unlockEffectChains(effectChains); 2683 usleep(sleepTime); 2684 } 2685 2686 // finally let go of all our tracks, without the lock held 2687 // since we can't guarantee the destructors won't acquire that 2688 // same lock. 2689 tracksToRemove.clear(); 2690 outputTracks.clear(); 2691 2692 // Effect chains will be actually deleted here if they were removed from 2693 // mEffectChains list during mixing or effects processing 2694 effectChains.clear(); 2695 } 2696 2697 return false; 2698} 2699 2700void AudioFlinger::DuplicatingThread::addOutputTrack(MixerThread *thread) 2701{ 2702 int frameCount = (3 * mFrameCount * mSampleRate) / thread->sampleRate(); 2703 OutputTrack *outputTrack = new OutputTrack((ThreadBase *)thread, 2704 this, 2705 mSampleRate, 2706 mFormat, 2707 mChannelCount, 2708 frameCount); 2709 if (outputTrack->cblk() != NULL) { 2710 thread->setStreamVolume(AUDIO_STREAM_CNT, 1.0f); 2711 mOutputTracks.add(outputTrack); 2712 LOGV("addOutputTrack() track %p, on thread %p", outputTrack, thread); 2713 updateWaitTime(); 2714 } 2715} 2716 2717void AudioFlinger::DuplicatingThread::removeOutputTrack(MixerThread *thread) 2718{ 2719 Mutex::Autolock _l(mLock); 2720 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2721 if (mOutputTracks[i]->thread() == (ThreadBase *)thread) { 2722 mOutputTracks[i]->destroy(); 2723 mOutputTracks.removeAt(i); 2724 updateWaitTime(); 2725 return; 2726 } 2727 } 2728 LOGV("removeOutputTrack(): unkonwn thread: %p", thread); 2729} 2730 2731void AudioFlinger::DuplicatingThread::updateWaitTime() 2732{ 2733 mWaitTimeMs = UINT_MAX; 2734 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2735 sp<ThreadBase> strong = mOutputTracks[i]->thread().promote(); 2736 if (strong != NULL) { 2737 uint32_t waitTimeMs = (strong->frameCount() * 2 * 1000) / strong->sampleRate(); 2738 if (waitTimeMs < mWaitTimeMs) { 2739 mWaitTimeMs = waitTimeMs; 2740 } 2741 } 2742 } 2743} 2744 2745 2746bool AudioFlinger::DuplicatingThread::outputsReady(SortedVector< sp<OutputTrack> > &outputTracks) 2747{ 2748 for (size_t i = 0; i < outputTracks.size(); i++) { 2749 sp <ThreadBase> thread = outputTracks[i]->thread().promote(); 2750 if (thread == 0) { 2751 LOGW("DuplicatingThread::outputsReady() could not promote thread on output track %p", outputTracks[i].get()); 2752 return false; 2753 } 2754 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 2755 if (playbackThread->standby() && !playbackThread->isSuspended()) { 2756 LOGV("DuplicatingThread output track %p on thread %p Not Ready", outputTracks[i].get(), thread.get()); 2757 return false; 2758 } 2759 } 2760 return true; 2761} 2762 2763uint32_t AudioFlinger::DuplicatingThread::activeSleepTimeUs() 2764{ 2765 return (mWaitTimeMs * 1000) / 2; 2766} 2767 2768// ---------------------------------------------------------------------------- 2769 2770// TrackBase constructor must be called with AudioFlinger::mLock held 2771AudioFlinger::ThreadBase::TrackBase::TrackBase( 2772 const wp<ThreadBase>& thread, 2773 const sp<Client>& client, 2774 uint32_t sampleRate, 2775 int format, 2776 int channelCount, 2777 int frameCount, 2778 uint32_t flags, 2779 const sp<IMemory>& sharedBuffer, 2780 int sessionId) 2781 : RefBase(), 2782 mThread(thread), 2783 mClient(client), 2784 mCblk(0), 2785 mFrameCount(0), 2786 mState(IDLE), 2787 mClientTid(-1), 2788 mFormat(format), 2789 mFlags(flags & ~SYSTEM_FLAGS_MASK), 2790 mSessionId(sessionId) 2791{ 2792 LOGV_IF(sharedBuffer != 0, "sharedBuffer: %p, size: %d", sharedBuffer->pointer(), sharedBuffer->size()); 2793 2794 // LOGD("Creating track with %d buffers @ %d bytes", bufferCount, bufferSize); 2795 size_t size = sizeof(audio_track_cblk_t); 2796 size_t bufferSize = frameCount*channelCount*sizeof(int16_t); 2797 if (sharedBuffer == 0) { 2798 size += bufferSize; 2799 } 2800 2801 if (client != NULL) { 2802 mCblkMemory = client->heap()->allocate(size); 2803 if (mCblkMemory != 0) { 2804 mCblk = static_cast<audio_track_cblk_t *>(mCblkMemory->pointer()); 2805 if (mCblk) { // construct the shared structure in-place. 2806 new(mCblk) audio_track_cblk_t(); 2807 // clear all buffers 2808 mCblk->frameCount = frameCount; 2809 mCblk->sampleRate = sampleRate; 2810 mCblk->channelCount = (uint8_t)channelCount; 2811 if (sharedBuffer == 0) { 2812 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 2813 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 2814 // Force underrun condition to avoid false underrun callback until first data is 2815 // written to buffer (other flags are cleared) 2816 mCblk->flags = CBLK_UNDERRUN_ON; 2817 } else { 2818 mBuffer = sharedBuffer->pointer(); 2819 } 2820 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 2821 } 2822 } else { 2823 LOGE("not enough memory for AudioTrack size=%u", size); 2824 client->heap()->dump("AudioTrack"); 2825 return; 2826 } 2827 } else { 2828 mCblk = (audio_track_cblk_t *)(new uint8_t[size]); 2829 if (mCblk) { // construct the shared structure in-place. 2830 new(mCblk) audio_track_cblk_t(); 2831 // clear all buffers 2832 mCblk->frameCount = frameCount; 2833 mCblk->sampleRate = sampleRate; 2834 mCblk->channelCount = (uint8_t)channelCount; 2835 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 2836 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 2837 // Force underrun condition to avoid false underrun callback until first data is 2838 // written to buffer (other flags are cleared) 2839 mCblk->flags = CBLK_UNDERRUN_ON; 2840 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 2841 } 2842 } 2843} 2844 2845AudioFlinger::ThreadBase::TrackBase::~TrackBase() 2846{ 2847 if (mCblk) { 2848 mCblk->~audio_track_cblk_t(); // destroy our shared-structure. 2849 if (mClient == NULL) { 2850 delete mCblk; 2851 } 2852 } 2853 mCblkMemory.clear(); // and free the shared memory 2854 if (mClient != NULL) { 2855 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 2856 mClient.clear(); 2857 } 2858} 2859 2860void AudioFlinger::ThreadBase::TrackBase::releaseBuffer(AudioBufferProvider::Buffer* buffer) 2861{ 2862 buffer->raw = 0; 2863 mFrameCount = buffer->frameCount; 2864 step(); 2865 buffer->frameCount = 0; 2866} 2867 2868bool AudioFlinger::ThreadBase::TrackBase::step() { 2869 bool result; 2870 audio_track_cblk_t* cblk = this->cblk(); 2871 2872 result = cblk->stepServer(mFrameCount); 2873 if (!result) { 2874 LOGV("stepServer failed acquiring cblk mutex"); 2875 mFlags |= STEPSERVER_FAILED; 2876 } 2877 return result; 2878} 2879 2880void AudioFlinger::ThreadBase::TrackBase::reset() { 2881 audio_track_cblk_t* cblk = this->cblk(); 2882 2883 cblk->user = 0; 2884 cblk->server = 0; 2885 cblk->userBase = 0; 2886 cblk->serverBase = 0; 2887 mFlags &= (uint32_t)(~SYSTEM_FLAGS_MASK); 2888 LOGV("TrackBase::reset"); 2889} 2890 2891sp<IMemory> AudioFlinger::ThreadBase::TrackBase::getCblk() const 2892{ 2893 return mCblkMemory; 2894} 2895 2896int AudioFlinger::ThreadBase::TrackBase::sampleRate() const { 2897 return (int)mCblk->sampleRate; 2898} 2899 2900int AudioFlinger::ThreadBase::TrackBase::channelCount() const { 2901 return (int)mCblk->channelCount; 2902} 2903 2904void* AudioFlinger::ThreadBase::TrackBase::getBuffer(uint32_t offset, uint32_t frames) const { 2905 audio_track_cblk_t* cblk = this->cblk(); 2906 int8_t *bufferStart = (int8_t *)mBuffer + (offset-cblk->serverBase)*cblk->frameSize; 2907 int8_t *bufferEnd = bufferStart + frames * cblk->frameSize; 2908 2909 // Check validity of returned pointer in case the track control block would have been corrupted. 2910 if (bufferStart < mBuffer || bufferStart > bufferEnd || bufferEnd > mBufferEnd || 2911 ((unsigned long)bufferStart & (unsigned long)(cblk->frameSize - 1))) { 2912 LOGE("TrackBase::getBuffer buffer out of range:\n start: %p, end %p , mBuffer %p mBufferEnd %p\n \ 2913 server %d, serverBase %d, user %d, userBase %d, channelCount %d", 2914 bufferStart, bufferEnd, mBuffer, mBufferEnd, 2915 cblk->server, cblk->serverBase, cblk->user, cblk->userBase, cblk->channelCount); 2916 return 0; 2917 } 2918 2919 return bufferStart; 2920} 2921 2922// ---------------------------------------------------------------------------- 2923 2924// Track constructor must be called with AudioFlinger::mLock and ThreadBase::mLock held 2925AudioFlinger::PlaybackThread::Track::Track( 2926 const wp<ThreadBase>& thread, 2927 const sp<Client>& client, 2928 int streamType, 2929 uint32_t sampleRate, 2930 int format, 2931 int channelCount, 2932 int frameCount, 2933 const sp<IMemory>& sharedBuffer, 2934 int sessionId) 2935 : TrackBase(thread, client, sampleRate, format, channelCount, frameCount, 0, sharedBuffer, sessionId), 2936 mMute(false), mSharedBuffer(sharedBuffer), mName(-1), mMainBuffer(NULL), mAuxBuffer(NULL), 2937 mAuxEffectId(0), mHasVolumeController(false) 2938{ 2939 if (mCblk != NULL) { 2940 sp<ThreadBase> baseThread = thread.promote(); 2941 if (baseThread != 0) { 2942 PlaybackThread *playbackThread = (PlaybackThread *)baseThread.get(); 2943 mName = playbackThread->getTrackName_l(); 2944 mMainBuffer = playbackThread->mixBuffer(); 2945 } 2946 LOGV("Track constructor name %d, calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 2947 if (mName < 0) { 2948 LOGE("no more track names available"); 2949 } 2950 mVolume[0] = 1.0f; 2951 mVolume[1] = 1.0f; 2952 mStreamType = streamType; 2953 // NOTE: audio_track_cblk_t::frameSize for 8 bit PCM data is based on a sample size of 2954 // 16 bit because data is converted to 16 bit before being stored in buffer by AudioTrack 2955 mCblk->frameSize = audio_is_linear_pcm(format) ? channelCount * sizeof(int16_t) : sizeof(int8_t); 2956 } 2957} 2958 2959AudioFlinger::PlaybackThread::Track::~Track() 2960{ 2961 LOGV("PlaybackThread::Track destructor"); 2962 sp<ThreadBase> thread = mThread.promote(); 2963 if (thread != 0) { 2964 Mutex::Autolock _l(thread->mLock); 2965 mState = TERMINATED; 2966 } 2967} 2968 2969void AudioFlinger::PlaybackThread::Track::destroy() 2970{ 2971 // NOTE: destroyTrack_l() can remove a strong reference to this Track 2972 // by removing it from mTracks vector, so there is a risk that this Tracks's 2973 // desctructor is called. As the destructor needs to lock mLock, 2974 // we must acquire a strong reference on this Track before locking mLock 2975 // here so that the destructor is called only when exiting this function. 2976 // On the other hand, as long as Track::destroy() is only called by 2977 // TrackHandle destructor, the TrackHandle still holds a strong ref on 2978 // this Track with its member mTrack. 2979 sp<Track> keep(this); 2980 { // scope for mLock 2981 sp<ThreadBase> thread = mThread.promote(); 2982 if (thread != 0) { 2983 if (!isOutputTrack()) { 2984 if (mState == ACTIVE || mState == RESUMING) { 2985 AudioSystem::stopOutput(thread->id(), 2986 (audio_stream_type_t)mStreamType, 2987 mSessionId); 2988 2989 // to track the speaker usage 2990 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 2991 } 2992 AudioSystem::releaseOutput(thread->id()); 2993 } 2994 Mutex::Autolock _l(thread->mLock); 2995 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 2996 playbackThread->destroyTrack_l(this); 2997 } 2998 } 2999} 3000 3001void AudioFlinger::PlaybackThread::Track::dump(char* buffer, size_t size) 3002{ 3003 snprintf(buffer, size, " %05d %05d %03u %03u %03u %05u %04u %1d %1d %1d %05u %05u %05u 0x%08x 0x%08x 0x%08x 0x%08x\n", 3004 mName - AudioMixer::TRACK0, 3005 (mClient == NULL) ? getpid() : mClient->pid(), 3006 mStreamType, 3007 mFormat, 3008 mCblk->channelCount, 3009 mSessionId, 3010 mFrameCount, 3011 mState, 3012 mMute, 3013 mFillingUpStatus, 3014 mCblk->sampleRate, 3015 mCblk->volume[0], 3016 mCblk->volume[1], 3017 mCblk->server, 3018 mCblk->user, 3019 (int)mMainBuffer, 3020 (int)mAuxBuffer); 3021} 3022 3023status_t AudioFlinger::PlaybackThread::Track::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3024{ 3025 audio_track_cblk_t* cblk = this->cblk(); 3026 uint32_t framesReady; 3027 uint32_t framesReq = buffer->frameCount; 3028 3029 // Check if last stepServer failed, try to step now 3030 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3031 if (!step()) goto getNextBuffer_exit; 3032 LOGV("stepServer recovered"); 3033 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3034 } 3035 3036 framesReady = cblk->framesReady(); 3037 3038 if (LIKELY(framesReady)) { 3039 uint32_t s = cblk->server; 3040 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3041 3042 bufferEnd = (cblk->loopEnd < bufferEnd) ? cblk->loopEnd : bufferEnd; 3043 if (framesReq > framesReady) { 3044 framesReq = framesReady; 3045 } 3046 if (s + framesReq > bufferEnd) { 3047 framesReq = bufferEnd - s; 3048 } 3049 3050 buffer->raw = getBuffer(s, framesReq); 3051 if (buffer->raw == 0) goto getNextBuffer_exit; 3052 3053 buffer->frameCount = framesReq; 3054 return NO_ERROR; 3055 } 3056 3057getNextBuffer_exit: 3058 buffer->raw = 0; 3059 buffer->frameCount = 0; 3060 LOGV("getNextBuffer() no more data for track %d on thread %p", mName, mThread.unsafe_get()); 3061 return NOT_ENOUGH_DATA; 3062} 3063 3064bool AudioFlinger::PlaybackThread::Track::isReady() const { 3065 if (mFillingUpStatus != FS_FILLING || isStopped() || isPausing()) return true; 3066 3067 if (mCblk->framesReady() >= mCblk->frameCount || 3068 (mCblk->flags & CBLK_FORCEREADY_MSK)) { 3069 mFillingUpStatus = FS_FILLED; 3070 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3071 return true; 3072 } 3073 return false; 3074} 3075 3076status_t AudioFlinger::PlaybackThread::Track::start() 3077{ 3078 status_t status = NO_ERROR; 3079 LOGV("start(%d), calling thread %d session %d", 3080 mName, IPCThreadState::self()->getCallingPid(), mSessionId); 3081 sp<ThreadBase> thread = mThread.promote(); 3082 if (thread != 0) { 3083 Mutex::Autolock _l(thread->mLock); 3084 int state = mState; 3085 // here the track could be either new, or restarted 3086 // in both cases "unstop" the track 3087 if (mState == PAUSED) { 3088 mState = TrackBase::RESUMING; 3089 LOGV("PAUSED => RESUMING (%d) on thread %p", mName, this); 3090 } else { 3091 mState = TrackBase::ACTIVE; 3092 LOGV("? => ACTIVE (%d) on thread %p", mName, this); 3093 } 3094 3095 if (!isOutputTrack() && state != ACTIVE && state != RESUMING) { 3096 thread->mLock.unlock(); 3097 status = AudioSystem::startOutput(thread->id(), 3098 (audio_stream_type_t)mStreamType, 3099 mSessionId); 3100 thread->mLock.lock(); 3101 3102 // to track the speaker usage 3103 if (status == NO_ERROR) { 3104 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStart); 3105 } 3106 } 3107 if (status == NO_ERROR) { 3108 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3109 playbackThread->addTrack_l(this); 3110 } else { 3111 mState = state; 3112 } 3113 } else { 3114 status = BAD_VALUE; 3115 } 3116 return status; 3117} 3118 3119void AudioFlinger::PlaybackThread::Track::stop() 3120{ 3121 LOGV("stop(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3122 sp<ThreadBase> thread = mThread.promote(); 3123 if (thread != 0) { 3124 Mutex::Autolock _l(thread->mLock); 3125 int state = mState; 3126 if (mState > STOPPED) { 3127 mState = STOPPED; 3128 // If the track is not active (PAUSED and buffers full), flush buffers 3129 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3130 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3131 reset(); 3132 } 3133 LOGV("(> STOPPED) => STOPPED (%d) on thread %p", mName, playbackThread); 3134 } 3135 if (!isOutputTrack() && (state == ACTIVE || state == RESUMING)) { 3136 thread->mLock.unlock(); 3137 AudioSystem::stopOutput(thread->id(), 3138 (audio_stream_type_t)mStreamType, 3139 mSessionId); 3140 thread->mLock.lock(); 3141 3142 // to track the speaker usage 3143 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3144 } 3145 } 3146} 3147 3148void AudioFlinger::PlaybackThread::Track::pause() 3149{ 3150 LOGV("pause(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3151 sp<ThreadBase> thread = mThread.promote(); 3152 if (thread != 0) { 3153 Mutex::Autolock _l(thread->mLock); 3154 if (mState == ACTIVE || mState == RESUMING) { 3155 mState = PAUSING; 3156 LOGV("ACTIVE/RESUMING => PAUSING (%d) on thread %p", mName, thread.get()); 3157 if (!isOutputTrack()) { 3158 thread->mLock.unlock(); 3159 AudioSystem::stopOutput(thread->id(), 3160 (audio_stream_type_t)mStreamType, 3161 mSessionId); 3162 thread->mLock.lock(); 3163 3164 // to track the speaker usage 3165 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3166 } 3167 } 3168 } 3169} 3170 3171void AudioFlinger::PlaybackThread::Track::flush() 3172{ 3173 LOGV("flush(%d)", mName); 3174 sp<ThreadBase> thread = mThread.promote(); 3175 if (thread != 0) { 3176 Mutex::Autolock _l(thread->mLock); 3177 if (mState != STOPPED && mState != PAUSED && mState != PAUSING) { 3178 return; 3179 } 3180 // No point remaining in PAUSED state after a flush => go to 3181 // STOPPED state 3182 mState = STOPPED; 3183 3184 // do not reset the track if it is still in the process of being stopped or paused. 3185 // this will be done by prepareTracks_l() when the track is stopped. 3186 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3187 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3188 reset(); 3189 } 3190 } 3191} 3192 3193void AudioFlinger::PlaybackThread::Track::reset() 3194{ 3195 // Do not reset twice to avoid discarding data written just after a flush and before 3196 // the audioflinger thread detects the track is stopped. 3197 if (!mResetDone) { 3198 TrackBase::reset(); 3199 // Force underrun condition to avoid false underrun callback until first data is 3200 // written to buffer 3201 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3202 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3203 mFillingUpStatus = FS_FILLING; 3204 mResetDone = true; 3205 } 3206} 3207 3208void AudioFlinger::PlaybackThread::Track::mute(bool muted) 3209{ 3210 mMute = muted; 3211} 3212 3213void AudioFlinger::PlaybackThread::Track::setVolume(float left, float right) 3214{ 3215 mVolume[0] = left; 3216 mVolume[1] = right; 3217} 3218 3219status_t AudioFlinger::PlaybackThread::Track::attachAuxEffect(int EffectId) 3220{ 3221 status_t status = DEAD_OBJECT; 3222 sp<ThreadBase> thread = mThread.promote(); 3223 if (thread != 0) { 3224 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3225 status = playbackThread->attachAuxEffect(this, EffectId); 3226 } 3227 return status; 3228} 3229 3230void AudioFlinger::PlaybackThread::Track::setAuxBuffer(int EffectId, int32_t *buffer) 3231{ 3232 mAuxEffectId = EffectId; 3233 mAuxBuffer = buffer; 3234} 3235 3236// ---------------------------------------------------------------------------- 3237 3238// RecordTrack constructor must be called with AudioFlinger::mLock held 3239AudioFlinger::RecordThread::RecordTrack::RecordTrack( 3240 const wp<ThreadBase>& thread, 3241 const sp<Client>& client, 3242 uint32_t sampleRate, 3243 int format, 3244 int channelCount, 3245 int frameCount, 3246 uint32_t flags, 3247 int sessionId) 3248 : TrackBase(thread, client, sampleRate, format, 3249 channelCount, frameCount, flags, 0, sessionId), 3250 mOverflow(false) 3251{ 3252 if (mCblk != NULL) { 3253 LOGV("RecordTrack constructor, size %d", (int)mBufferEnd - (int)mBuffer); 3254 if (format == AUDIO_FORMAT_PCM_16_BIT) { 3255 mCblk->frameSize = channelCount * sizeof(int16_t); 3256 } else if (format == AUDIO_FORMAT_PCM_8_BIT) { 3257 mCblk->frameSize = channelCount * sizeof(int8_t); 3258 } else { 3259 mCblk->frameSize = sizeof(int8_t); 3260 } 3261 } 3262} 3263 3264AudioFlinger::RecordThread::RecordTrack::~RecordTrack() 3265{ 3266 sp<ThreadBase> thread = mThread.promote(); 3267 if (thread != 0) { 3268 AudioSystem::releaseInput(thread->id()); 3269 } 3270} 3271 3272status_t AudioFlinger::RecordThread::RecordTrack::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3273{ 3274 audio_track_cblk_t* cblk = this->cblk(); 3275 uint32_t framesAvail; 3276 uint32_t framesReq = buffer->frameCount; 3277 3278 // Check if last stepServer failed, try to step now 3279 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3280 if (!step()) goto getNextBuffer_exit; 3281 LOGV("stepServer recovered"); 3282 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3283 } 3284 3285 framesAvail = cblk->framesAvailable_l(); 3286 3287 if (LIKELY(framesAvail)) { 3288 uint32_t s = cblk->server; 3289 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3290 3291 if (framesReq > framesAvail) { 3292 framesReq = framesAvail; 3293 } 3294 if (s + framesReq > bufferEnd) { 3295 framesReq = bufferEnd - s; 3296 } 3297 3298 buffer->raw = getBuffer(s, framesReq); 3299 if (buffer->raw == 0) goto getNextBuffer_exit; 3300 3301 buffer->frameCount = framesReq; 3302 return NO_ERROR; 3303 } 3304 3305getNextBuffer_exit: 3306 buffer->raw = 0; 3307 buffer->frameCount = 0; 3308 return NOT_ENOUGH_DATA; 3309} 3310 3311status_t AudioFlinger::RecordThread::RecordTrack::start() 3312{ 3313 sp<ThreadBase> thread = mThread.promote(); 3314 if (thread != 0) { 3315 RecordThread *recordThread = (RecordThread *)thread.get(); 3316 return recordThread->start(this); 3317 } else { 3318 return BAD_VALUE; 3319 } 3320} 3321 3322void AudioFlinger::RecordThread::RecordTrack::stop() 3323{ 3324 sp<ThreadBase> thread = mThread.promote(); 3325 if (thread != 0) { 3326 RecordThread *recordThread = (RecordThread *)thread.get(); 3327 recordThread->stop(this); 3328 TrackBase::reset(); 3329 // Force overerrun condition to avoid false overrun callback until first data is 3330 // read from buffer 3331 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3332 } 3333} 3334 3335void AudioFlinger::RecordThread::RecordTrack::dump(char* buffer, size_t size) 3336{ 3337 snprintf(buffer, size, " %05d %03u %03u %05d %04u %01d %05u %08x %08x\n", 3338 (mClient == NULL) ? getpid() : mClient->pid(), 3339 mFormat, 3340 mCblk->channelCount, 3341 mSessionId, 3342 mFrameCount, 3343 mState, 3344 mCblk->sampleRate, 3345 mCblk->server, 3346 mCblk->user); 3347} 3348 3349 3350// ---------------------------------------------------------------------------- 3351 3352AudioFlinger::PlaybackThread::OutputTrack::OutputTrack( 3353 const wp<ThreadBase>& thread, 3354 DuplicatingThread *sourceThread, 3355 uint32_t sampleRate, 3356 int format, 3357 int channelCount, 3358 int frameCount) 3359 : Track(thread, NULL, AUDIO_STREAM_CNT, sampleRate, format, channelCount, frameCount, NULL, 0), 3360 mActive(false), mSourceThread(sourceThread) 3361{ 3362 3363 PlaybackThread *playbackThread = (PlaybackThread *)thread.unsafe_get(); 3364 if (mCblk != NULL) { 3365 mCblk->flags |= CBLK_DIRECTION_OUT; 3366 mCblk->buffers = (char*)mCblk + sizeof(audio_track_cblk_t); 3367 mCblk->volume[0] = mCblk->volume[1] = 0x1000; 3368 mOutBuffer.frameCount = 0; 3369 playbackThread->mTracks.add(this); 3370 LOGV("OutputTrack constructor mCblk %p, mBuffer %p, mCblk->buffers %p, mCblk->frameCount %d, mCblk->sampleRate %d, mCblk->channelCount %d mBufferEnd %p", 3371 mCblk, mBuffer, mCblk->buffers, mCblk->frameCount, mCblk->sampleRate, mCblk->channelCount, mBufferEnd); 3372 } else { 3373 LOGW("Error creating output track on thread %p", playbackThread); 3374 } 3375} 3376 3377AudioFlinger::PlaybackThread::OutputTrack::~OutputTrack() 3378{ 3379 clearBufferQueue(); 3380} 3381 3382status_t AudioFlinger::PlaybackThread::OutputTrack::start() 3383{ 3384 status_t status = Track::start(); 3385 if (status != NO_ERROR) { 3386 return status; 3387 } 3388 3389 mActive = true; 3390 mRetryCount = 127; 3391 return status; 3392} 3393 3394void AudioFlinger::PlaybackThread::OutputTrack::stop() 3395{ 3396 Track::stop(); 3397 clearBufferQueue(); 3398 mOutBuffer.frameCount = 0; 3399 mActive = false; 3400} 3401 3402bool AudioFlinger::PlaybackThread::OutputTrack::write(int16_t* data, uint32_t frames) 3403{ 3404 Buffer *pInBuffer; 3405 Buffer inBuffer; 3406 uint32_t channelCount = mCblk->channelCount; 3407 bool outputBufferFull = false; 3408 inBuffer.frameCount = frames; 3409 inBuffer.i16 = data; 3410 3411 uint32_t waitTimeLeftMs = mSourceThread->waitTimeMs(); 3412 3413 if (!mActive && frames != 0) { 3414 start(); 3415 sp<ThreadBase> thread = mThread.promote(); 3416 if (thread != 0) { 3417 MixerThread *mixerThread = (MixerThread *)thread.get(); 3418 if (mCblk->frameCount > frames){ 3419 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3420 uint32_t startFrames = (mCblk->frameCount - frames); 3421 pInBuffer = new Buffer; 3422 pInBuffer->mBuffer = new int16_t[startFrames * channelCount]; 3423 pInBuffer->frameCount = startFrames; 3424 pInBuffer->i16 = pInBuffer->mBuffer; 3425 memset(pInBuffer->raw, 0, startFrames * channelCount * sizeof(int16_t)); 3426 mBufferQueue.add(pInBuffer); 3427 } else { 3428 LOGW ("OutputTrack::write() %p no more buffers in queue", this); 3429 } 3430 } 3431 } 3432 } 3433 3434 while (waitTimeLeftMs) { 3435 // First write pending buffers, then new data 3436 if (mBufferQueue.size()) { 3437 pInBuffer = mBufferQueue.itemAt(0); 3438 } else { 3439 pInBuffer = &inBuffer; 3440 } 3441 3442 if (pInBuffer->frameCount == 0) { 3443 break; 3444 } 3445 3446 if (mOutBuffer.frameCount == 0) { 3447 mOutBuffer.frameCount = pInBuffer->frameCount; 3448 nsecs_t startTime = systemTime(); 3449 if (obtainBuffer(&mOutBuffer, waitTimeLeftMs) == (status_t)AudioTrack::NO_MORE_BUFFERS) { 3450 LOGV ("OutputTrack::write() %p thread %p no more output buffers", this, mThread.unsafe_get()); 3451 outputBufferFull = true; 3452 break; 3453 } 3454 uint32_t waitTimeMs = (uint32_t)ns2ms(systemTime() - startTime); 3455 if (waitTimeLeftMs >= waitTimeMs) { 3456 waitTimeLeftMs -= waitTimeMs; 3457 } else { 3458 waitTimeLeftMs = 0; 3459 } 3460 } 3461 3462 uint32_t outFrames = pInBuffer->frameCount > mOutBuffer.frameCount ? mOutBuffer.frameCount : pInBuffer->frameCount; 3463 memcpy(mOutBuffer.raw, pInBuffer->raw, outFrames * channelCount * sizeof(int16_t)); 3464 mCblk->stepUser(outFrames); 3465 pInBuffer->frameCount -= outFrames; 3466 pInBuffer->i16 += outFrames * channelCount; 3467 mOutBuffer.frameCount -= outFrames; 3468 mOutBuffer.i16 += outFrames * channelCount; 3469 3470 if (pInBuffer->frameCount == 0) { 3471 if (mBufferQueue.size()) { 3472 mBufferQueue.removeAt(0); 3473 delete [] pInBuffer->mBuffer; 3474 delete pInBuffer; 3475 LOGV("OutputTrack::write() %p thread %p released overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3476 } else { 3477 break; 3478 } 3479 } 3480 } 3481 3482 // If we could not write all frames, allocate a buffer and queue it for next time. 3483 if (inBuffer.frameCount) { 3484 sp<ThreadBase> thread = mThread.promote(); 3485 if (thread != 0 && !thread->standby()) { 3486 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3487 pInBuffer = new Buffer; 3488 pInBuffer->mBuffer = new int16_t[inBuffer.frameCount * channelCount]; 3489 pInBuffer->frameCount = inBuffer.frameCount; 3490 pInBuffer->i16 = pInBuffer->mBuffer; 3491 memcpy(pInBuffer->raw, inBuffer.raw, inBuffer.frameCount * channelCount * sizeof(int16_t)); 3492 mBufferQueue.add(pInBuffer); 3493 LOGV("OutputTrack::write() %p thread %p adding overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3494 } else { 3495 LOGW("OutputTrack::write() %p thread %p no more overflow buffers", mThread.unsafe_get(), this); 3496 } 3497 } 3498 } 3499 3500 // Calling write() with a 0 length buffer, means that no more data will be written: 3501 // If no more buffers are pending, fill output track buffer to make sure it is started 3502 // by output mixer. 3503 if (frames == 0 && mBufferQueue.size() == 0) { 3504 if (mCblk->user < mCblk->frameCount) { 3505 frames = mCblk->frameCount - mCblk->user; 3506 pInBuffer = new Buffer; 3507 pInBuffer->mBuffer = new int16_t[frames * channelCount]; 3508 pInBuffer->frameCount = frames; 3509 pInBuffer->i16 = pInBuffer->mBuffer; 3510 memset(pInBuffer->raw, 0, frames * channelCount * sizeof(int16_t)); 3511 mBufferQueue.add(pInBuffer); 3512 } else if (mActive) { 3513 stop(); 3514 } 3515 } 3516 3517 return outputBufferFull; 3518} 3519 3520status_t AudioFlinger::PlaybackThread::OutputTrack::obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs) 3521{ 3522 int active; 3523 status_t result; 3524 audio_track_cblk_t* cblk = mCblk; 3525 uint32_t framesReq = buffer->frameCount; 3526 3527// LOGV("OutputTrack::obtainBuffer user %d, server %d", cblk->user, cblk->server); 3528 buffer->frameCount = 0; 3529 3530 uint32_t framesAvail = cblk->framesAvailable(); 3531 3532 3533 if (framesAvail == 0) { 3534 Mutex::Autolock _l(cblk->lock); 3535 goto start_loop_here; 3536 while (framesAvail == 0) { 3537 active = mActive; 3538 if (UNLIKELY(!active)) { 3539 LOGV("Not active and NO_MORE_BUFFERS"); 3540 return AudioTrack::NO_MORE_BUFFERS; 3541 } 3542 result = cblk->cv.waitRelative(cblk->lock, milliseconds(waitTimeMs)); 3543 if (result != NO_ERROR) { 3544 return AudioTrack::NO_MORE_BUFFERS; 3545 } 3546 // read the server count again 3547 start_loop_here: 3548 framesAvail = cblk->framesAvailable_l(); 3549 } 3550 } 3551 3552// if (framesAvail < framesReq) { 3553// return AudioTrack::NO_MORE_BUFFERS; 3554// } 3555 3556 if (framesReq > framesAvail) { 3557 framesReq = framesAvail; 3558 } 3559 3560 uint32_t u = cblk->user; 3561 uint32_t bufferEnd = cblk->userBase + cblk->frameCount; 3562 3563 if (u + framesReq > bufferEnd) { 3564 framesReq = bufferEnd - u; 3565 } 3566 3567 buffer->frameCount = framesReq; 3568 buffer->raw = (void *)cblk->buffer(u); 3569 return NO_ERROR; 3570} 3571 3572 3573void AudioFlinger::PlaybackThread::OutputTrack::clearBufferQueue() 3574{ 3575 size_t size = mBufferQueue.size(); 3576 Buffer *pBuffer; 3577 3578 for (size_t i = 0; i < size; i++) { 3579 pBuffer = mBufferQueue.itemAt(i); 3580 delete [] pBuffer->mBuffer; 3581 delete pBuffer; 3582 } 3583 mBufferQueue.clear(); 3584} 3585 3586// ---------------------------------------------------------------------------- 3587 3588AudioFlinger::Client::Client(const sp<AudioFlinger>& audioFlinger, pid_t pid) 3589 : RefBase(), 3590 mAudioFlinger(audioFlinger), 3591 mMemoryDealer(new MemoryDealer(1024*1024, "AudioFlinger::Client")), 3592 mPid(pid) 3593{ 3594 // 1 MB of address space is good for 32 tracks, 8 buffers each, 4 KB/buffer 3595} 3596 3597// Client destructor must be called with AudioFlinger::mLock held 3598AudioFlinger::Client::~Client() 3599{ 3600 mAudioFlinger->removeClient_l(mPid); 3601} 3602 3603const sp<MemoryDealer>& AudioFlinger::Client::heap() const 3604{ 3605 return mMemoryDealer; 3606} 3607 3608// ---------------------------------------------------------------------------- 3609 3610AudioFlinger::NotificationClient::NotificationClient(const sp<AudioFlinger>& audioFlinger, 3611 const sp<IAudioFlingerClient>& client, 3612 pid_t pid) 3613 : mAudioFlinger(audioFlinger), mPid(pid), mClient(client) 3614{ 3615} 3616 3617AudioFlinger::NotificationClient::~NotificationClient() 3618{ 3619 mClient.clear(); 3620} 3621 3622void AudioFlinger::NotificationClient::binderDied(const wp<IBinder>& who) 3623{ 3624 sp<NotificationClient> keep(this); 3625 { 3626 mAudioFlinger->removeNotificationClient(mPid); 3627 } 3628} 3629 3630// ---------------------------------------------------------------------------- 3631 3632AudioFlinger::TrackHandle::TrackHandle(const sp<AudioFlinger::PlaybackThread::Track>& track) 3633 : BnAudioTrack(), 3634 mTrack(track) 3635{ 3636} 3637 3638AudioFlinger::TrackHandle::~TrackHandle() { 3639 // just stop the track on deletion, associated resources 3640 // will be freed from the main thread once all pending buffers have 3641 // been played. Unless it's not in the active track list, in which 3642 // case we free everything now... 3643 mTrack->destroy(); 3644} 3645 3646status_t AudioFlinger::TrackHandle::start() { 3647 return mTrack->start(); 3648} 3649 3650void AudioFlinger::TrackHandle::stop() { 3651 mTrack->stop(); 3652} 3653 3654void AudioFlinger::TrackHandle::flush() { 3655 mTrack->flush(); 3656} 3657 3658void AudioFlinger::TrackHandle::mute(bool e) { 3659 mTrack->mute(e); 3660} 3661 3662void AudioFlinger::TrackHandle::pause() { 3663 mTrack->pause(); 3664} 3665 3666void AudioFlinger::TrackHandle::setVolume(float left, float right) { 3667 mTrack->setVolume(left, right); 3668} 3669 3670sp<IMemory> AudioFlinger::TrackHandle::getCblk() const { 3671 return mTrack->getCblk(); 3672} 3673 3674status_t AudioFlinger::TrackHandle::attachAuxEffect(int EffectId) 3675{ 3676 return mTrack->attachAuxEffect(EffectId); 3677} 3678 3679status_t AudioFlinger::TrackHandle::onTransact( 3680 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 3681{ 3682 return BnAudioTrack::onTransact(code, data, reply, flags); 3683} 3684 3685// ---------------------------------------------------------------------------- 3686 3687sp<IAudioRecord> AudioFlinger::openRecord( 3688 pid_t pid, 3689 int input, 3690 uint32_t sampleRate, 3691 int format, 3692 int channelCount, 3693 int frameCount, 3694 uint32_t flags, 3695 int *sessionId, 3696 status_t *status) 3697{ 3698 sp<RecordThread::RecordTrack> recordTrack; 3699 sp<RecordHandle> recordHandle; 3700 sp<Client> client; 3701 wp<Client> wclient; 3702 status_t lStatus; 3703 RecordThread *thread; 3704 size_t inFrameCount; 3705 int lSessionId; 3706 3707 // check calling permissions 3708 if (!recordingAllowed()) { 3709 lStatus = PERMISSION_DENIED; 3710 goto Exit; 3711 } 3712 3713 // add client to list 3714 { // scope for mLock 3715 Mutex::Autolock _l(mLock); 3716 thread = checkRecordThread_l(input); 3717 if (thread == NULL) { 3718 lStatus = BAD_VALUE; 3719 goto Exit; 3720 } 3721 3722 wclient = mClients.valueFor(pid); 3723 if (wclient != NULL) { 3724 client = wclient.promote(); 3725 } else { 3726 client = new Client(this, pid); 3727 mClients.add(pid, client); 3728 } 3729 3730 // If no audio session id is provided, create one here 3731 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 3732 lSessionId = *sessionId; 3733 } else { 3734 lSessionId = nextUniqueId_l(); 3735 if (sessionId != NULL) { 3736 *sessionId = lSessionId; 3737 } 3738 } 3739 // create new record track. The record track uses one track in mHardwareMixerThread by convention. 3740 recordTrack = new RecordThread::RecordTrack(thread, client, sampleRate, 3741 format, channelCount, frameCount, flags, lSessionId); 3742 } 3743 if (recordTrack->getCblk() == NULL) { 3744 // remove local strong reference to Client before deleting the RecordTrack so that the Client 3745 // destructor is called by the TrackBase destructor with mLock held 3746 client.clear(); 3747 recordTrack.clear(); 3748 lStatus = NO_MEMORY; 3749 goto Exit; 3750 } 3751 3752 // return to handle to client 3753 recordHandle = new RecordHandle(recordTrack); 3754 lStatus = NO_ERROR; 3755 3756Exit: 3757 if (status) { 3758 *status = lStatus; 3759 } 3760 return recordHandle; 3761} 3762 3763// ---------------------------------------------------------------------------- 3764 3765AudioFlinger::RecordHandle::RecordHandle(const sp<AudioFlinger::RecordThread::RecordTrack>& recordTrack) 3766 : BnAudioRecord(), 3767 mRecordTrack(recordTrack) 3768{ 3769} 3770 3771AudioFlinger::RecordHandle::~RecordHandle() { 3772 stop(); 3773} 3774 3775status_t AudioFlinger::RecordHandle::start() { 3776 LOGV("RecordHandle::start()"); 3777 return mRecordTrack->start(); 3778} 3779 3780void AudioFlinger::RecordHandle::stop() { 3781 LOGV("RecordHandle::stop()"); 3782 mRecordTrack->stop(); 3783} 3784 3785sp<IMemory> AudioFlinger::RecordHandle::getCblk() const { 3786 return mRecordTrack->getCblk(); 3787} 3788 3789status_t AudioFlinger::RecordHandle::onTransact( 3790 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 3791{ 3792 return BnAudioRecord::onTransact(code, data, reply, flags); 3793} 3794 3795// ---------------------------------------------------------------------------- 3796 3797AudioFlinger::RecordThread::RecordThread(const sp<AudioFlinger>& audioFlinger, AudioStreamIn *input, uint32_t sampleRate, uint32_t channels, int id) : 3798 ThreadBase(audioFlinger, id), 3799 mInput(input), mResampler(0), mRsmpOutBuffer(0), mRsmpInBuffer(0) 3800{ 3801 mReqChannelCount = popcount(channels); 3802 mReqSampleRate = sampleRate; 3803 readInputParameters(); 3804} 3805 3806 3807AudioFlinger::RecordThread::~RecordThread() 3808{ 3809 delete[] mRsmpInBuffer; 3810 if (mResampler != 0) { 3811 delete mResampler; 3812 delete[] mRsmpOutBuffer; 3813 } 3814} 3815 3816void AudioFlinger::RecordThread::onFirstRef() 3817{ 3818 const size_t SIZE = 256; 3819 char buffer[SIZE]; 3820 3821 snprintf(buffer, SIZE, "Record Thread %p", this); 3822 3823 run(buffer, PRIORITY_URGENT_AUDIO); 3824} 3825 3826bool AudioFlinger::RecordThread::threadLoop() 3827{ 3828 AudioBufferProvider::Buffer buffer; 3829 sp<RecordTrack> activeTrack; 3830 3831 nsecs_t lastWarning = 0; 3832 3833 // start recording 3834 while (!exitPending()) { 3835 3836 processConfigEvents(); 3837 3838 { // scope for mLock 3839 Mutex::Autolock _l(mLock); 3840 checkForNewParameters_l(); 3841 if (mActiveTrack == 0 && mConfigEvents.isEmpty()) { 3842 if (!mStandby) { 3843 mInput->stream->common.standby(&mInput->stream->common); 3844 mStandby = true; 3845 } 3846 3847 if (exitPending()) break; 3848 3849 LOGV("RecordThread: loop stopping"); 3850 // go to sleep 3851 mWaitWorkCV.wait(mLock); 3852 LOGV("RecordThread: loop starting"); 3853 continue; 3854 } 3855 if (mActiveTrack != 0) { 3856 if (mActiveTrack->mState == TrackBase::PAUSING) { 3857 if (!mStandby) { 3858 mInput->stream->common.standby(&mInput->stream->common); 3859 mStandby = true; 3860 } 3861 mActiveTrack.clear(); 3862 mStartStopCond.broadcast(); 3863 } else if (mActiveTrack->mState == TrackBase::RESUMING) { 3864 if (mReqChannelCount != mActiveTrack->channelCount()) { 3865 mActiveTrack.clear(); 3866 mStartStopCond.broadcast(); 3867 } else if (mBytesRead != 0) { 3868 // record start succeeds only if first read from audio input 3869 // succeeds 3870 if (mBytesRead > 0) { 3871 mActiveTrack->mState = TrackBase::ACTIVE; 3872 } else { 3873 mActiveTrack.clear(); 3874 } 3875 mStartStopCond.broadcast(); 3876 } 3877 mStandby = false; 3878 } 3879 } 3880 } 3881 3882 if (mActiveTrack != 0) { 3883 if (mActiveTrack->mState != TrackBase::ACTIVE && 3884 mActiveTrack->mState != TrackBase::RESUMING) { 3885 usleep(5000); 3886 continue; 3887 } 3888 buffer.frameCount = mFrameCount; 3889 if (LIKELY(mActiveTrack->getNextBuffer(&buffer) == NO_ERROR)) { 3890 size_t framesOut = buffer.frameCount; 3891 if (mResampler == 0) { 3892 // no resampling 3893 while (framesOut) { 3894 size_t framesIn = mFrameCount - mRsmpInIndex; 3895 if (framesIn) { 3896 int8_t *src = (int8_t *)mRsmpInBuffer + mRsmpInIndex * mFrameSize; 3897 int8_t *dst = buffer.i8 + (buffer.frameCount - framesOut) * mActiveTrack->mCblk->frameSize; 3898 if (framesIn > framesOut) 3899 framesIn = framesOut; 3900 mRsmpInIndex += framesIn; 3901 framesOut -= framesIn; 3902 if ((int)mChannelCount == mReqChannelCount || 3903 mFormat != AUDIO_FORMAT_PCM_16_BIT) { 3904 memcpy(dst, src, framesIn * mFrameSize); 3905 } else { 3906 int16_t *src16 = (int16_t *)src; 3907 int16_t *dst16 = (int16_t *)dst; 3908 if (mChannelCount == 1) { 3909 while (framesIn--) { 3910 *dst16++ = *src16; 3911 *dst16++ = *src16++; 3912 } 3913 } else { 3914 while (framesIn--) { 3915 *dst16++ = (int16_t)(((int32_t)*src16 + (int32_t)*(src16 + 1)) >> 1); 3916 src16 += 2; 3917 } 3918 } 3919 } 3920 } 3921 if (framesOut && mFrameCount == mRsmpInIndex) { 3922 if (framesOut == mFrameCount && 3923 ((int)mChannelCount == mReqChannelCount || mFormat != AUDIO_FORMAT_PCM_16_BIT)) { 3924 mBytesRead = mInput->stream->read(mInput->stream, buffer.raw, mInputBytes); 3925 framesOut = 0; 3926 } else { 3927 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 3928 mRsmpInIndex = 0; 3929 } 3930 if (mBytesRead < 0) { 3931 LOGE("Error reading audio input"); 3932 if (mActiveTrack->mState == TrackBase::ACTIVE) { 3933 // Force input into standby so that it tries to 3934 // recover at next read attempt 3935 mInput->stream->common.standby(&mInput->stream->common); 3936 usleep(5000); 3937 } 3938 mRsmpInIndex = mFrameCount; 3939 framesOut = 0; 3940 buffer.frameCount = 0; 3941 } 3942 } 3943 } 3944 } else { 3945 // resampling 3946 3947 memset(mRsmpOutBuffer, 0, framesOut * 2 * sizeof(int32_t)); 3948 // alter output frame count as if we were expecting stereo samples 3949 if (mChannelCount == 1 && mReqChannelCount == 1) { 3950 framesOut >>= 1; 3951 } 3952 mResampler->resample(mRsmpOutBuffer, framesOut, this); 3953 // ditherAndClamp() works as long as all buffers returned by mActiveTrack->getNextBuffer() 3954 // are 32 bit aligned which should be always true. 3955 if (mChannelCount == 2 && mReqChannelCount == 1) { 3956 AudioMixer::ditherAndClamp(mRsmpOutBuffer, mRsmpOutBuffer, framesOut); 3957 // the resampler always outputs stereo samples: do post stereo to mono conversion 3958 int16_t *src = (int16_t *)mRsmpOutBuffer; 3959 int16_t *dst = buffer.i16; 3960 while (framesOut--) { 3961 *dst++ = (int16_t)(((int32_t)*src + (int32_t)*(src + 1)) >> 1); 3962 src += 2; 3963 } 3964 } else { 3965 AudioMixer::ditherAndClamp((int32_t *)buffer.raw, mRsmpOutBuffer, framesOut); 3966 } 3967 3968 } 3969 mActiveTrack->releaseBuffer(&buffer); 3970 mActiveTrack->overflow(); 3971 } 3972 // client isn't retrieving buffers fast enough 3973 else { 3974 if (!mActiveTrack->setOverflow()) { 3975 nsecs_t now = systemTime(); 3976 if ((now - lastWarning) > kWarningThrottle) { 3977 LOGW("RecordThread: buffer overflow"); 3978 lastWarning = now; 3979 } 3980 } 3981 // Release the processor for a while before asking for a new buffer. 3982 // This will give the application more chance to read from the buffer and 3983 // clear the overflow. 3984 usleep(5000); 3985 } 3986 } 3987 } 3988 3989 if (!mStandby) { 3990 mInput->stream->common.standby(&mInput->stream->common); 3991 } 3992 mActiveTrack.clear(); 3993 3994 mStartStopCond.broadcast(); 3995 3996 LOGV("RecordThread %p exiting", this); 3997 return false; 3998} 3999 4000status_t AudioFlinger::RecordThread::start(RecordThread::RecordTrack* recordTrack) 4001{ 4002 LOGV("RecordThread::start"); 4003 sp <ThreadBase> strongMe = this; 4004 status_t status = NO_ERROR; 4005 { 4006 AutoMutex lock(&mLock); 4007 if (mActiveTrack != 0) { 4008 if (recordTrack != mActiveTrack.get()) { 4009 status = -EBUSY; 4010 } else if (mActiveTrack->mState == TrackBase::PAUSING) { 4011 mActiveTrack->mState = TrackBase::ACTIVE; 4012 } 4013 return status; 4014 } 4015 4016 recordTrack->mState = TrackBase::IDLE; 4017 mActiveTrack = recordTrack; 4018 mLock.unlock(); 4019 status_t status = AudioSystem::startInput(mId); 4020 mLock.lock(); 4021 if (status != NO_ERROR) { 4022 mActiveTrack.clear(); 4023 return status; 4024 } 4025 mRsmpInIndex = mFrameCount; 4026 mBytesRead = 0; 4027 if (mResampler != NULL) { 4028 mResampler->reset(); 4029 } 4030 mActiveTrack->mState = TrackBase::RESUMING; 4031 // signal thread to start 4032 LOGV("Signal record thread"); 4033 mWaitWorkCV.signal(); 4034 // do not wait for mStartStopCond if exiting 4035 if (mExiting) { 4036 mActiveTrack.clear(); 4037 status = INVALID_OPERATION; 4038 goto startError; 4039 } 4040 mStartStopCond.wait(mLock); 4041 if (mActiveTrack == 0) { 4042 LOGV("Record failed to start"); 4043 status = BAD_VALUE; 4044 goto startError; 4045 } 4046 LOGV("Record started OK"); 4047 return status; 4048 } 4049startError: 4050 AudioSystem::stopInput(mId); 4051 return status; 4052} 4053 4054void AudioFlinger::RecordThread::stop(RecordThread::RecordTrack* recordTrack) { 4055 LOGV("RecordThread::stop"); 4056 sp <ThreadBase> strongMe = this; 4057 { 4058 AutoMutex lock(&mLock); 4059 if (mActiveTrack != 0 && recordTrack == mActiveTrack.get()) { 4060 mActiveTrack->mState = TrackBase::PAUSING; 4061 // do not wait for mStartStopCond if exiting 4062 if (mExiting) { 4063 return; 4064 } 4065 mStartStopCond.wait(mLock); 4066 // if we have been restarted, recordTrack == mActiveTrack.get() here 4067 if (mActiveTrack == 0 || recordTrack != mActiveTrack.get()) { 4068 mLock.unlock(); 4069 AudioSystem::stopInput(mId); 4070 mLock.lock(); 4071 LOGV("Record stopped OK"); 4072 } 4073 } 4074 } 4075} 4076 4077status_t AudioFlinger::RecordThread::dump(int fd, const Vector<String16>& args) 4078{ 4079 const size_t SIZE = 256; 4080 char buffer[SIZE]; 4081 String8 result; 4082 pid_t pid = 0; 4083 4084 snprintf(buffer, SIZE, "\nInput thread %p internals\n", this); 4085 result.append(buffer); 4086 4087 if (mActiveTrack != 0) { 4088 result.append("Active Track:\n"); 4089 result.append(" Clien Fmt Chn Session Buf S SRate Serv User\n"); 4090 mActiveTrack->dump(buffer, SIZE); 4091 result.append(buffer); 4092 4093 snprintf(buffer, SIZE, "In index: %d\n", mRsmpInIndex); 4094 result.append(buffer); 4095 snprintf(buffer, SIZE, "In size: %d\n", mInputBytes); 4096 result.append(buffer); 4097 snprintf(buffer, SIZE, "Resampling: %d\n", (mResampler != 0)); 4098 result.append(buffer); 4099 snprintf(buffer, SIZE, "Out channel count: %d\n", mReqChannelCount); 4100 result.append(buffer); 4101 snprintf(buffer, SIZE, "Out sample rate: %d\n", mReqSampleRate); 4102 result.append(buffer); 4103 4104 4105 } else { 4106 result.append("No record client\n"); 4107 } 4108 write(fd, result.string(), result.size()); 4109 4110 dumpBase(fd, args); 4111 4112 return NO_ERROR; 4113} 4114 4115status_t AudioFlinger::RecordThread::getNextBuffer(AudioBufferProvider::Buffer* buffer) 4116{ 4117 size_t framesReq = buffer->frameCount; 4118 size_t framesReady = mFrameCount - mRsmpInIndex; 4119 int channelCount; 4120 4121 if (framesReady == 0) { 4122 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 4123 if (mBytesRead < 0) { 4124 LOGE("RecordThread::getNextBuffer() Error reading audio input"); 4125 if (mActiveTrack->mState == TrackBase::ACTIVE) { 4126 // Force input into standby so that it tries to 4127 // recover at next read attempt 4128 mInput->stream->common.standby(&mInput->stream->common); 4129 usleep(5000); 4130 } 4131 buffer->raw = 0; 4132 buffer->frameCount = 0; 4133 return NOT_ENOUGH_DATA; 4134 } 4135 mRsmpInIndex = 0; 4136 framesReady = mFrameCount; 4137 } 4138 4139 if (framesReq > framesReady) { 4140 framesReq = framesReady; 4141 } 4142 4143 if (mChannelCount == 1 && mReqChannelCount == 2) { 4144 channelCount = 1; 4145 } else { 4146 channelCount = 2; 4147 } 4148 buffer->raw = mRsmpInBuffer + mRsmpInIndex * channelCount; 4149 buffer->frameCount = framesReq; 4150 return NO_ERROR; 4151} 4152 4153void AudioFlinger::RecordThread::releaseBuffer(AudioBufferProvider::Buffer* buffer) 4154{ 4155 mRsmpInIndex += buffer->frameCount; 4156 buffer->frameCount = 0; 4157} 4158 4159bool AudioFlinger::RecordThread::checkForNewParameters_l() 4160{ 4161 bool reconfig = false; 4162 4163 while (!mNewParameters.isEmpty()) { 4164 status_t status = NO_ERROR; 4165 String8 keyValuePair = mNewParameters[0]; 4166 AudioParameter param = AudioParameter(keyValuePair); 4167 int value; 4168 int reqFormat = mFormat; 4169 int reqSamplingRate = mReqSampleRate; 4170 int reqChannelCount = mReqChannelCount; 4171 4172 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 4173 reqSamplingRate = value; 4174 reconfig = true; 4175 } 4176 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 4177 reqFormat = value; 4178 reconfig = true; 4179 } 4180 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 4181 reqChannelCount = popcount(value); 4182 reconfig = true; 4183 } 4184 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 4185 // do not accept frame count changes if tracks are open as the track buffer 4186 // size depends on frame count and correct behavior would not be garantied 4187 // if frame count is changed after track creation 4188 if (mActiveTrack != 0) { 4189 status = INVALID_OPERATION; 4190 } else { 4191 reconfig = true; 4192 } 4193 } 4194 if (status == NO_ERROR) { 4195 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4196 if (status == INVALID_OPERATION) { 4197 mInput->stream->common.standby(&mInput->stream->common); 4198 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4199 } 4200 if (reconfig) { 4201 if (status == BAD_VALUE && 4202 reqFormat == mInput->stream->common.get_format(&mInput->stream->common) && 4203 reqFormat == AUDIO_FORMAT_PCM_16_BIT && 4204 ((int)mInput->stream->common.get_sample_rate(&mInput->stream->common) <= (2 * reqSamplingRate)) && 4205 (popcount(mInput->stream->common.get_channels(&mInput->stream->common)) < 3) && 4206 (reqChannelCount < 3)) { 4207 status = NO_ERROR; 4208 } 4209 if (status == NO_ERROR) { 4210 readInputParameters(); 4211 sendConfigEvent_l(AudioSystem::INPUT_CONFIG_CHANGED); 4212 } 4213 } 4214 } 4215 4216 mNewParameters.removeAt(0); 4217 4218 mParamStatus = status; 4219 mParamCond.signal(); 4220 mWaitWorkCV.wait(mLock); 4221 } 4222 return reconfig; 4223} 4224 4225String8 AudioFlinger::RecordThread::getParameters(const String8& keys) 4226{ 4227 char *s; 4228 String8 out_s8; 4229 4230 s = mInput->stream->common.get_parameters(&mInput->stream->common, keys.string()); 4231 out_s8 = String8(s); 4232 free(s); 4233 return out_s8; 4234} 4235 4236void AudioFlinger::RecordThread::audioConfigChanged_l(int event, int param) { 4237 AudioSystem::OutputDescriptor desc; 4238 void *param2 = 0; 4239 4240 switch (event) { 4241 case AudioSystem::INPUT_OPENED: 4242 case AudioSystem::INPUT_CONFIG_CHANGED: 4243 desc.channels = mChannels; 4244 desc.samplingRate = mSampleRate; 4245 desc.format = mFormat; 4246 desc.frameCount = mFrameCount; 4247 desc.latency = 0; 4248 param2 = &desc; 4249 break; 4250 4251 case AudioSystem::INPUT_CLOSED: 4252 default: 4253 break; 4254 } 4255 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 4256} 4257 4258void AudioFlinger::RecordThread::readInputParameters() 4259{ 4260 if (mRsmpInBuffer) delete mRsmpInBuffer; 4261 if (mRsmpOutBuffer) delete mRsmpOutBuffer; 4262 if (mResampler) delete mResampler; 4263 mResampler = 0; 4264 4265 mSampleRate = mInput->stream->common.get_sample_rate(&mInput->stream->common); 4266 mChannels = mInput->stream->common.get_channels(&mInput->stream->common); 4267 mChannelCount = (uint16_t)popcount(mChannels); 4268 mFormat = mInput->stream->common.get_format(&mInput->stream->common); 4269 mFrameSize = (uint16_t)audio_stream_frame_size(&mInput->stream->common); 4270 mInputBytes = mInput->stream->common.get_buffer_size(&mInput->stream->common); 4271 mFrameCount = mInputBytes / mFrameSize; 4272 mRsmpInBuffer = new int16_t[mFrameCount * mChannelCount]; 4273 4274 if (mSampleRate != mReqSampleRate && mChannelCount < 3 && mReqChannelCount < 3) 4275 { 4276 int channelCount; 4277 // optmization: if mono to mono, use the resampler in stereo to stereo mode to avoid 4278 // stereo to mono post process as the resampler always outputs stereo. 4279 if (mChannelCount == 1 && mReqChannelCount == 2) { 4280 channelCount = 1; 4281 } else { 4282 channelCount = 2; 4283 } 4284 mResampler = AudioResampler::create(16, channelCount, mReqSampleRate); 4285 mResampler->setSampleRate(mSampleRate); 4286 mResampler->setVolume(AudioMixer::UNITY_GAIN, AudioMixer::UNITY_GAIN); 4287 mRsmpOutBuffer = new int32_t[mFrameCount * 2]; 4288 4289 // optmization: if mono to mono, alter input frame count as if we were inputing stereo samples 4290 if (mChannelCount == 1 && mReqChannelCount == 1) { 4291 mFrameCount >>= 1; 4292 } 4293 4294 } 4295 mRsmpInIndex = mFrameCount; 4296} 4297 4298unsigned int AudioFlinger::RecordThread::getInputFramesLost() 4299{ 4300 return mInput->stream->get_input_frames_lost(mInput->stream); 4301} 4302 4303// ---------------------------------------------------------------------------- 4304 4305int AudioFlinger::openOutput(uint32_t *pDevices, 4306 uint32_t *pSamplingRate, 4307 uint32_t *pFormat, 4308 uint32_t *pChannels, 4309 uint32_t *pLatencyMs, 4310 uint32_t flags) 4311{ 4312 status_t status; 4313 PlaybackThread *thread = NULL; 4314 mHardwareStatus = AUDIO_HW_OUTPUT_OPEN; 4315 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4316 uint32_t format = pFormat ? *pFormat : 0; 4317 uint32_t channels = pChannels ? *pChannels : 0; 4318 uint32_t latency = pLatencyMs ? *pLatencyMs : 0; 4319 audio_stream_out_t *outStream; 4320 audio_hw_device_t *outHwDev; 4321 4322 LOGV("openOutput(), Device %x, SamplingRate %d, Format %d, Channels %x, flags %x", 4323 pDevices ? *pDevices : 0, 4324 samplingRate, 4325 format, 4326 channels, 4327 flags); 4328 4329 if (pDevices == NULL || *pDevices == 0) { 4330 return 0; 4331 } 4332 4333 Mutex::Autolock _l(mLock); 4334 4335 outHwDev = findSuitableHwDev_l(*pDevices); 4336 if (outHwDev == NULL) 4337 return 0; 4338 4339 status = outHwDev->open_output_stream(outHwDev, *pDevices, (int *)&format, 4340 &channels, &samplingRate, &outStream); 4341 LOGV("openOutput() openOutputStream returned output %p, SamplingRate %d, Format %d, Channels %x, status %d", 4342 outStream, 4343 samplingRate, 4344 format, 4345 channels, 4346 status); 4347 4348 mHardwareStatus = AUDIO_HW_IDLE; 4349 if (outStream != NULL) { 4350 AudioStreamOut *output = new AudioStreamOut(outHwDev, outStream); 4351 int id = nextUniqueId_l(); 4352 4353 if ((flags & AUDIO_POLICY_OUTPUT_FLAG_DIRECT) || 4354 (format != AUDIO_FORMAT_PCM_16_BIT) || 4355 (channels != AUDIO_CHANNEL_OUT_STEREO)) { 4356 thread = new DirectOutputThread(this, output, id, *pDevices); 4357 LOGV("openOutput() created direct output: ID %d thread %p", id, thread); 4358 } else { 4359 thread = new MixerThread(this, output, id, *pDevices); 4360 LOGV("openOutput() created mixer output: ID %d thread %p", id, thread); 4361 } 4362 mPlaybackThreads.add(id, thread); 4363 4364 if (pSamplingRate) *pSamplingRate = samplingRate; 4365 if (pFormat) *pFormat = format; 4366 if (pChannels) *pChannels = channels; 4367 if (pLatencyMs) *pLatencyMs = thread->latency(); 4368 4369 // notify client processes of the new output creation 4370 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4371 return id; 4372 } 4373 4374 return 0; 4375} 4376 4377int AudioFlinger::openDuplicateOutput(int output1, int output2) 4378{ 4379 Mutex::Autolock _l(mLock); 4380 MixerThread *thread1 = checkMixerThread_l(output1); 4381 MixerThread *thread2 = checkMixerThread_l(output2); 4382 4383 if (thread1 == NULL || thread2 == NULL) { 4384 LOGW("openDuplicateOutput() wrong output mixer type for output %d or %d", output1, output2); 4385 return 0; 4386 } 4387 4388 int id = nextUniqueId_l(); 4389 DuplicatingThread *thread = new DuplicatingThread(this, thread1, id); 4390 thread->addOutputTrack(thread2); 4391 mPlaybackThreads.add(id, thread); 4392 // notify client processes of the new output creation 4393 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4394 return id; 4395} 4396 4397status_t AudioFlinger::closeOutput(int output) 4398{ 4399 // keep strong reference on the playback thread so that 4400 // it is not destroyed while exit() is executed 4401 sp <PlaybackThread> thread; 4402 { 4403 Mutex::Autolock _l(mLock); 4404 thread = checkPlaybackThread_l(output); 4405 if (thread == NULL) { 4406 return BAD_VALUE; 4407 } 4408 4409 LOGV("closeOutput() %d", output); 4410 4411 if (thread->type() == PlaybackThread::MIXER) { 4412 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4413 if (mPlaybackThreads.valueAt(i)->type() == PlaybackThread::DUPLICATING) { 4414 DuplicatingThread *dupThread = (DuplicatingThread *)mPlaybackThreads.valueAt(i).get(); 4415 dupThread->removeOutputTrack((MixerThread *)thread.get()); 4416 } 4417 } 4418 } 4419 void *param2 = 0; 4420 audioConfigChanged_l(AudioSystem::OUTPUT_CLOSED, output, param2); 4421 mPlaybackThreads.removeItem(output); 4422 } 4423 thread->exit(); 4424 4425 if (thread->type() != PlaybackThread::DUPLICATING) { 4426 AudioStreamOut *out = thread->getOutput(); 4427 out->hwDev->close_output_stream(out->hwDev, out->stream); 4428 delete out; 4429 } 4430 return NO_ERROR; 4431} 4432 4433status_t AudioFlinger::suspendOutput(int output) 4434{ 4435 Mutex::Autolock _l(mLock); 4436 PlaybackThread *thread = checkPlaybackThread_l(output); 4437 4438 if (thread == NULL) { 4439 return BAD_VALUE; 4440 } 4441 4442 LOGV("suspendOutput() %d", output); 4443 thread->suspend(); 4444 4445 return NO_ERROR; 4446} 4447 4448status_t AudioFlinger::restoreOutput(int output) 4449{ 4450 Mutex::Autolock _l(mLock); 4451 PlaybackThread *thread = checkPlaybackThread_l(output); 4452 4453 if (thread == NULL) { 4454 return BAD_VALUE; 4455 } 4456 4457 LOGV("restoreOutput() %d", output); 4458 4459 thread->restore(); 4460 4461 return NO_ERROR; 4462} 4463 4464int AudioFlinger::openInput(uint32_t *pDevices, 4465 uint32_t *pSamplingRate, 4466 uint32_t *pFormat, 4467 uint32_t *pChannels, 4468 uint32_t acoustics) 4469{ 4470 status_t status; 4471 RecordThread *thread = NULL; 4472 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4473 uint32_t format = pFormat ? *pFormat : 0; 4474 uint32_t channels = pChannels ? *pChannels : 0; 4475 uint32_t reqSamplingRate = samplingRate; 4476 uint32_t reqFormat = format; 4477 uint32_t reqChannels = channels; 4478 audio_stream_in_t *inStream; 4479 audio_hw_device_t *inHwDev; 4480 4481 if (pDevices == NULL || *pDevices == 0) { 4482 return 0; 4483 } 4484 4485 Mutex::Autolock _l(mLock); 4486 4487 inHwDev = findSuitableHwDev_l(*pDevices); 4488 if (inHwDev == NULL) 4489 return 0; 4490 4491 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 4492 &channels, &samplingRate, 4493 (audio_in_acoustics_t)acoustics, 4494 &inStream); 4495 LOGV("openInput() openInputStream returned input %p, SamplingRate %d, Format %d, Channels %x, acoustics %x, status %d", 4496 inStream, 4497 samplingRate, 4498 format, 4499 channels, 4500 acoustics, 4501 status); 4502 4503 // If the input could not be opened with the requested parameters and we can handle the conversion internally, 4504 // try to open again with the proposed parameters. The AudioFlinger can resample the input and do mono to stereo 4505 // or stereo to mono conversions on 16 bit PCM inputs. 4506 if (inStream == NULL && status == BAD_VALUE && 4507 reqFormat == format && format == AUDIO_FORMAT_PCM_16_BIT && 4508 (samplingRate <= 2 * reqSamplingRate) && 4509 (popcount(channels) < 3) && (popcount(reqChannels) < 3)) { 4510 LOGV("openInput() reopening with proposed sampling rate and channels"); 4511 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 4512 &channels, &samplingRate, 4513 (audio_in_acoustics_t)acoustics, 4514 &inStream); 4515 } 4516 4517 if (inStream != NULL) { 4518 AudioStreamIn *input = new AudioStreamIn(inHwDev, inStream); 4519 4520 int id = nextUniqueId_l(); 4521 // Start record thread 4522 thread = new RecordThread(this, input, reqSamplingRate, reqChannels, id); 4523 mRecordThreads.add(id, thread); 4524 LOGV("openInput() created record thread: ID %d thread %p", id, thread); 4525 if (pSamplingRate) *pSamplingRate = reqSamplingRate; 4526 if (pFormat) *pFormat = format; 4527 if (pChannels) *pChannels = reqChannels; 4528 4529 input->stream->common.standby(&input->stream->common); 4530 4531 // notify client processes of the new input creation 4532 thread->audioConfigChanged_l(AudioSystem::INPUT_OPENED); 4533 return id; 4534 } 4535 4536 return 0; 4537} 4538 4539status_t AudioFlinger::closeInput(int input) 4540{ 4541 // keep strong reference on the record thread so that 4542 // it is not destroyed while exit() is executed 4543 sp <RecordThread> thread; 4544 { 4545 Mutex::Autolock _l(mLock); 4546 thread = checkRecordThread_l(input); 4547 if (thread == NULL) { 4548 return BAD_VALUE; 4549 } 4550 4551 LOGV("closeInput() %d", input); 4552 void *param2 = 0; 4553 audioConfigChanged_l(AudioSystem::INPUT_CLOSED, input, param2); 4554 mRecordThreads.removeItem(input); 4555 } 4556 thread->exit(); 4557 4558 AudioStreamIn *in = thread->getInput(); 4559 in->hwDev->close_input_stream(in->hwDev, in->stream); 4560 delete in; 4561 4562 return NO_ERROR; 4563} 4564 4565status_t AudioFlinger::setStreamOutput(uint32_t stream, int output) 4566{ 4567 Mutex::Autolock _l(mLock); 4568 MixerThread *dstThread = checkMixerThread_l(output); 4569 if (dstThread == NULL) { 4570 LOGW("setStreamOutput() bad output id %d", output); 4571 return BAD_VALUE; 4572 } 4573 4574 LOGV("setStreamOutput() stream %d to output %d", stream, output); 4575 audioConfigChanged_l(AudioSystem::STREAM_CONFIG_CHANGED, output, &stream); 4576 4577 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4578 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 4579 if (thread != dstThread && 4580 thread->type() != PlaybackThread::DIRECT) { 4581 MixerThread *srcThread = (MixerThread *)thread; 4582 srcThread->invalidateTracks(stream); 4583 } 4584 } 4585 4586 return NO_ERROR; 4587} 4588 4589 4590int AudioFlinger::newAudioSessionId() 4591{ 4592 AutoMutex _l(mLock); 4593 return nextUniqueId_l(); 4594} 4595 4596// checkPlaybackThread_l() must be called with AudioFlinger::mLock held 4597AudioFlinger::PlaybackThread *AudioFlinger::checkPlaybackThread_l(int output) const 4598{ 4599 PlaybackThread *thread = NULL; 4600 if (mPlaybackThreads.indexOfKey(output) >= 0) { 4601 thread = (PlaybackThread *)mPlaybackThreads.valueFor(output).get(); 4602 } 4603 return thread; 4604} 4605 4606// checkMixerThread_l() must be called with AudioFlinger::mLock held 4607AudioFlinger::MixerThread *AudioFlinger::checkMixerThread_l(int output) const 4608{ 4609 PlaybackThread *thread = checkPlaybackThread_l(output); 4610 if (thread != NULL) { 4611 if (thread->type() == PlaybackThread::DIRECT) { 4612 thread = NULL; 4613 } 4614 } 4615 return (MixerThread *)thread; 4616} 4617 4618// checkRecordThread_l() must be called with AudioFlinger::mLock held 4619AudioFlinger::RecordThread *AudioFlinger::checkRecordThread_l(int input) const 4620{ 4621 RecordThread *thread = NULL; 4622 if (mRecordThreads.indexOfKey(input) >= 0) { 4623 thread = (RecordThread *)mRecordThreads.valueFor(input).get(); 4624 } 4625 return thread; 4626} 4627 4628// nextUniqueId_l() must be called with AudioFlinger::mLock held 4629int AudioFlinger::nextUniqueId_l() 4630{ 4631 return mNextUniqueId++; 4632} 4633 4634// ---------------------------------------------------------------------------- 4635// Effect management 4636// ---------------------------------------------------------------------------- 4637 4638 4639status_t AudioFlinger::loadEffectLibrary(const char *libPath, int *handle) 4640{ 4641 // check calling permissions 4642 if (!settingsAllowed()) { 4643 return PERMISSION_DENIED; 4644 } 4645 // only allow libraries loaded from /system/lib/soundfx for now 4646 if (strncmp(gEffectLibPath, libPath, strlen(gEffectLibPath)) != 0) { 4647 return PERMISSION_DENIED; 4648 } 4649 4650 Mutex::Autolock _l(mLock); 4651 return EffectLoadLibrary(libPath, handle); 4652} 4653 4654status_t AudioFlinger::unloadEffectLibrary(int handle) 4655{ 4656 // check calling permissions 4657 if (!settingsAllowed()) { 4658 return PERMISSION_DENIED; 4659 } 4660 4661 Mutex::Autolock _l(mLock); 4662 return EffectUnloadLibrary(handle); 4663} 4664 4665status_t AudioFlinger::queryNumberEffects(uint32_t *numEffects) 4666{ 4667 Mutex::Autolock _l(mLock); 4668 return EffectQueryNumberEffects(numEffects); 4669} 4670 4671status_t AudioFlinger::queryEffect(uint32_t index, effect_descriptor_t *descriptor) 4672{ 4673 Mutex::Autolock _l(mLock); 4674 return EffectQueryEffect(index, descriptor); 4675} 4676 4677status_t AudioFlinger::getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor) 4678{ 4679 Mutex::Autolock _l(mLock); 4680 return EffectGetDescriptor(pUuid, descriptor); 4681} 4682 4683 4684// this UUID must match the one defined in media/libeffects/EffectVisualizer.cpp 4685static const effect_uuid_t VISUALIZATION_UUID_ = 4686 {0xd069d9e0, 0x8329, 0x11df, 0x9168, {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}}; 4687 4688sp<IEffect> AudioFlinger::createEffect(pid_t pid, 4689 effect_descriptor_t *pDesc, 4690 const sp<IEffectClient>& effectClient, 4691 int32_t priority, 4692 int output, 4693 int sessionId, 4694 status_t *status, 4695 int *id, 4696 int *enabled) 4697{ 4698 status_t lStatus = NO_ERROR; 4699 sp<EffectHandle> handle; 4700 effect_interface_t itfe; 4701 effect_descriptor_t desc; 4702 sp<Client> client; 4703 wp<Client> wclient; 4704 4705 LOGV("createEffect pid %d, client %p, priority %d, sessionId %d, output %d", 4706 pid, effectClient.get(), priority, sessionId, output); 4707 4708 if (pDesc == NULL) { 4709 lStatus = BAD_VALUE; 4710 goto Exit; 4711 } 4712 4713 // check audio settings permission for global effects 4714 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && !settingsAllowed()) { 4715 lStatus = PERMISSION_DENIED; 4716 goto Exit; 4717 } 4718 4719 // Session AUDIO_SESSION_OUTPUT_STAGE is reserved for output stage effects 4720 // that can only be created by audio policy manager (running in same process) 4721 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE && getpid() != pid) { 4722 lStatus = PERMISSION_DENIED; 4723 goto Exit; 4724 } 4725 4726 // check recording permission for visualizer 4727 if ((memcmp(&pDesc->type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0 || 4728 memcmp(&pDesc->uuid, &VISUALIZATION_UUID_, sizeof(effect_uuid_t)) == 0) && 4729 !recordingAllowed()) { 4730 lStatus = PERMISSION_DENIED; 4731 goto Exit; 4732 } 4733 4734 if (output == 0) { 4735 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE) { 4736 // output must be specified by AudioPolicyManager when using session 4737 // AUDIO_SESSION_OUTPUT_STAGE 4738 lStatus = BAD_VALUE; 4739 goto Exit; 4740 } else if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 4741 // if the output returned by getOutputForEffect() is removed before we lock the 4742 // mutex below, the call to checkPlaybackThread_l(output) below will detect it 4743 // and we will exit safely 4744 output = AudioSystem::getOutputForEffect(&desc); 4745 } 4746 } 4747 4748 { 4749 Mutex::Autolock _l(mLock); 4750 4751 4752 if (!EffectIsNullUuid(&pDesc->uuid)) { 4753 // if uuid is specified, request effect descriptor 4754 lStatus = EffectGetDescriptor(&pDesc->uuid, &desc); 4755 if (lStatus < 0) { 4756 LOGW("createEffect() error %d from EffectGetDescriptor", lStatus); 4757 goto Exit; 4758 } 4759 } else { 4760 // if uuid is not specified, look for an available implementation 4761 // of the required type in effect factory 4762 if (EffectIsNullUuid(&pDesc->type)) { 4763 LOGW("createEffect() no effect type"); 4764 lStatus = BAD_VALUE; 4765 goto Exit; 4766 } 4767 uint32_t numEffects = 0; 4768 effect_descriptor_t d; 4769 bool found = false; 4770 4771 lStatus = EffectQueryNumberEffects(&numEffects); 4772 if (lStatus < 0) { 4773 LOGW("createEffect() error %d from EffectQueryNumberEffects", lStatus); 4774 goto Exit; 4775 } 4776 for (uint32_t i = 0; i < numEffects; i++) { 4777 lStatus = EffectQueryEffect(i, &desc); 4778 if (lStatus < 0) { 4779 LOGW("createEffect() error %d from EffectQueryEffect", lStatus); 4780 continue; 4781 } 4782 if (memcmp(&desc.type, &pDesc->type, sizeof(effect_uuid_t)) == 0) { 4783 // If matching type found save effect descriptor. If the session is 4784 // 0 and the effect is not auxiliary, continue enumeration in case 4785 // an auxiliary version of this effect type is available 4786 found = true; 4787 memcpy(&d, &desc, sizeof(effect_descriptor_t)); 4788 if (sessionId != AUDIO_SESSION_OUTPUT_MIX || 4789 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 4790 break; 4791 } 4792 } 4793 } 4794 if (!found) { 4795 lStatus = BAD_VALUE; 4796 LOGW("createEffect() effect not found"); 4797 goto Exit; 4798 } 4799 // For same effect type, chose auxiliary version over insert version if 4800 // connect to output mix (Compliance to OpenSL ES) 4801 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && 4802 (d.flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_AUXILIARY) { 4803 memcpy(&desc, &d, sizeof(effect_descriptor_t)); 4804 } 4805 } 4806 4807 // Do not allow auxiliary effects on a session different from 0 (output mix) 4808 if (sessionId != AUDIO_SESSION_OUTPUT_MIX && 4809 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 4810 lStatus = INVALID_OPERATION; 4811 goto Exit; 4812 } 4813 4814 // return effect descriptor 4815 memcpy(pDesc, &desc, sizeof(effect_descriptor_t)); 4816 4817 // If output is not specified try to find a matching audio session ID in one of the 4818 // output threads. 4819 // If output is 0 here, sessionId is neither SESSION_OUTPUT_STAGE nor SESSION_OUTPUT_MIX 4820 // because of code checking output when entering the function. 4821 if (output == 0) { 4822 // look for the thread where the specified audio session is present 4823 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4824 if (mPlaybackThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 4825 output = mPlaybackThreads.keyAt(i); 4826 break; 4827 } 4828 } 4829 // If no output thread contains the requested session ID, default to 4830 // first output. The effect chain will be moved to the correct output 4831 // thread when a track with the same session ID is created 4832 if (output == 0 && mPlaybackThreads.size()) { 4833 output = mPlaybackThreads.keyAt(0); 4834 } 4835 } 4836 LOGV("createEffect() got output %d for effect %s", output, desc.name); 4837 PlaybackThread *thread = checkPlaybackThread_l(output); 4838 if (thread == NULL) { 4839 LOGE("createEffect() unknown output thread"); 4840 lStatus = BAD_VALUE; 4841 goto Exit; 4842 } 4843 4844 // TODO: allow attachment of effect to inputs 4845 4846 wclient = mClients.valueFor(pid); 4847 4848 if (wclient != NULL) { 4849 client = wclient.promote(); 4850 } else { 4851 client = new Client(this, pid); 4852 mClients.add(pid, client); 4853 } 4854 4855 // create effect on selected output trhead 4856 handle = thread->createEffect_l(client, effectClient, priority, sessionId, 4857 &desc, enabled, &lStatus); 4858 if (handle != 0 && id != NULL) { 4859 *id = handle->id(); 4860 } 4861 } 4862 4863Exit: 4864 if(status) { 4865 *status = lStatus; 4866 } 4867 return handle; 4868} 4869 4870status_t AudioFlinger::moveEffects(int session, int srcOutput, int dstOutput) 4871{ 4872 LOGV("moveEffects() session %d, srcOutput %d, dstOutput %d", 4873 session, srcOutput, dstOutput); 4874 Mutex::Autolock _l(mLock); 4875 if (srcOutput == dstOutput) { 4876 LOGW("moveEffects() same dst and src outputs %d", dstOutput); 4877 return NO_ERROR; 4878 } 4879 PlaybackThread *srcThread = checkPlaybackThread_l(srcOutput); 4880 if (srcThread == NULL) { 4881 LOGW("moveEffects() bad srcOutput %d", srcOutput); 4882 return BAD_VALUE; 4883 } 4884 PlaybackThread *dstThread = checkPlaybackThread_l(dstOutput); 4885 if (dstThread == NULL) { 4886 LOGW("moveEffects() bad dstOutput %d", dstOutput); 4887 return BAD_VALUE; 4888 } 4889 4890 Mutex::Autolock _dl(dstThread->mLock); 4891 Mutex::Autolock _sl(srcThread->mLock); 4892 moveEffectChain_l(session, srcThread, dstThread, false); 4893 4894 return NO_ERROR; 4895} 4896 4897// moveEffectChain_l mustbe called with both srcThread and dstThread mLocks held 4898status_t AudioFlinger::moveEffectChain_l(int session, 4899 AudioFlinger::PlaybackThread *srcThread, 4900 AudioFlinger::PlaybackThread *dstThread, 4901 bool reRegister) 4902{ 4903 LOGV("moveEffectChain_l() session %d from thread %p to thread %p", 4904 session, srcThread, dstThread); 4905 4906 sp<EffectChain> chain = srcThread->getEffectChain_l(session); 4907 if (chain == 0) { 4908 LOGW("moveEffectChain_l() effect chain for session %d not on source thread %p", 4909 session, srcThread); 4910 return INVALID_OPERATION; 4911 } 4912 4913 // remove chain first. This is useful only if reconfiguring effect chain on same output thread, 4914 // so that a new chain is created with correct parameters when first effect is added. This is 4915 // otherwise unecessary as removeEffect_l() will remove the chain when last effect is 4916 // removed. 4917 srcThread->removeEffectChain_l(chain); 4918 4919 // transfer all effects one by one so that new effect chain is created on new thread with 4920 // correct buffer sizes and audio parameters and effect engines reconfigured accordingly 4921 int dstOutput = dstThread->id(); 4922 sp<EffectChain> dstChain; 4923 uint32_t strategy; 4924 sp<EffectModule> effect = chain->getEffectFromId_l(0); 4925 while (effect != 0) { 4926 srcThread->removeEffect_l(effect); 4927 dstThread->addEffect_l(effect); 4928 // if the move request is not received from audio policy manager, the effect must be 4929 // re-registered with the new strategy and output 4930 if (dstChain == 0) { 4931 dstChain = effect->chain().promote(); 4932 if (dstChain == 0) { 4933 LOGW("moveEffectChain_l() cannot get chain from effect %p", effect.get()); 4934 srcThread->addEffect_l(effect); 4935 return NO_INIT; 4936 } 4937 strategy = dstChain->strategy(); 4938 } 4939 if (reRegister) { 4940 AudioSystem::unregisterEffect(effect->id()); 4941 AudioSystem::registerEffect(&effect->desc(), 4942 dstOutput, 4943 strategy, 4944 session, 4945 effect->id()); 4946 } 4947 effect = chain->getEffectFromId_l(0); 4948 } 4949 4950 return NO_ERROR; 4951} 4952 4953// PlaybackThread::createEffect_l() must be called with AudioFlinger::mLock held 4954sp<AudioFlinger::EffectHandle> AudioFlinger::PlaybackThread::createEffect_l( 4955 const sp<AudioFlinger::Client>& client, 4956 const sp<IEffectClient>& effectClient, 4957 int32_t priority, 4958 int sessionId, 4959 effect_descriptor_t *desc, 4960 int *enabled, 4961 status_t *status 4962 ) 4963{ 4964 sp<EffectModule> effect; 4965 sp<EffectHandle> handle; 4966 status_t lStatus; 4967 sp<Track> track; 4968 sp<EffectChain> chain; 4969 bool chainCreated = false; 4970 bool effectCreated = false; 4971 bool effectRegistered = false; 4972 4973 if (mOutput == 0) { 4974 LOGW("createEffect_l() Audio driver not initialized."); 4975 lStatus = NO_INIT; 4976 goto Exit; 4977 } 4978 4979 // Do not allow auxiliary effect on session other than 0 4980 if ((desc->flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY && 4981 sessionId != AUDIO_SESSION_OUTPUT_MIX) { 4982 LOGW("createEffect_l() Cannot add auxiliary effect %s to session %d", 4983 desc->name, sessionId); 4984 lStatus = BAD_VALUE; 4985 goto Exit; 4986 } 4987 4988 // Do not allow effects with session ID 0 on direct output or duplicating threads 4989 // TODO: add rule for hw accelerated effects on direct outputs with non PCM format 4990 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && mType != MIXER) { 4991 LOGW("createEffect_l() Cannot add auxiliary effect %s to session %d", 4992 desc->name, sessionId); 4993 lStatus = BAD_VALUE; 4994 goto Exit; 4995 } 4996 4997 LOGV("createEffect_l() thread %p effect %s on session %d", this, desc->name, sessionId); 4998 4999 { // scope for mLock 5000 Mutex::Autolock _l(mLock); 5001 5002 // check for existing effect chain with the requested audio session 5003 chain = getEffectChain_l(sessionId); 5004 if (chain == 0) { 5005 // create a new chain for this session 5006 LOGV("createEffect_l() new effect chain for session %d", sessionId); 5007 chain = new EffectChain(this, sessionId); 5008 addEffectChain_l(chain); 5009 chain->setStrategy(getStrategyForSession_l(sessionId)); 5010 chainCreated = true; 5011 } else { 5012 effect = chain->getEffectFromDesc_l(desc); 5013 } 5014 5015 LOGV("createEffect_l() got effect %p on chain %p", effect == 0 ? 0 : effect.get(), chain.get()); 5016 5017 if (effect == 0) { 5018 int id = mAudioFlinger->nextUniqueId_l(); 5019 // Check CPU and memory usage 5020 lStatus = AudioSystem::registerEffect(desc, mId, chain->strategy(), sessionId, id); 5021 if (lStatus != NO_ERROR) { 5022 goto Exit; 5023 } 5024 effectRegistered = true; 5025 // create a new effect module if none present in the chain 5026 effect = new EffectModule(this, chain, desc, id, sessionId); 5027 lStatus = effect->status(); 5028 if (lStatus != NO_ERROR) { 5029 goto Exit; 5030 } 5031 lStatus = chain->addEffect_l(effect); 5032 if (lStatus != NO_ERROR) { 5033 goto Exit; 5034 } 5035 effectCreated = true; 5036 5037 effect->setDevice(mDevice); 5038 effect->setMode(mAudioFlinger->getMode()); 5039 } 5040 // create effect handle and connect it to effect module 5041 handle = new EffectHandle(effect, client, effectClient, priority); 5042 lStatus = effect->addHandle(handle); 5043 if (enabled) { 5044 *enabled = (int)effect->isEnabled(); 5045 } 5046 } 5047 5048Exit: 5049 if (lStatus != NO_ERROR && lStatus != ALREADY_EXISTS) { 5050 Mutex::Autolock _l(mLock); 5051 if (effectCreated) { 5052 chain->removeEffect_l(effect); 5053 } 5054 if (effectRegistered) { 5055 AudioSystem::unregisterEffect(effect->id()); 5056 } 5057 if (chainCreated) { 5058 removeEffectChain_l(chain); 5059 } 5060 handle.clear(); 5061 } 5062 5063 if(status) { 5064 *status = lStatus; 5065 } 5066 return handle; 5067} 5068 5069// PlaybackThread::addEffect_l() must be called with AudioFlinger::mLock and 5070// PlaybackThread::mLock held 5071status_t AudioFlinger::PlaybackThread::addEffect_l(const sp<EffectModule>& effect) 5072{ 5073 // check for existing effect chain with the requested audio session 5074 int sessionId = effect->sessionId(); 5075 sp<EffectChain> chain = getEffectChain_l(sessionId); 5076 bool chainCreated = false; 5077 5078 if (chain == 0) { 5079 // create a new chain for this session 5080 LOGV("addEffect_l() new effect chain for session %d", sessionId); 5081 chain = new EffectChain(this, sessionId); 5082 addEffectChain_l(chain); 5083 chain->setStrategy(getStrategyForSession_l(sessionId)); 5084 chainCreated = true; 5085 } 5086 LOGV("addEffect_l() %p chain %p effect %p", this, chain.get(), effect.get()); 5087 5088 if (chain->getEffectFromId_l(effect->id()) != 0) { 5089 LOGW("addEffect_l() %p effect %s already present in chain %p", 5090 this, effect->desc().name, chain.get()); 5091 return BAD_VALUE; 5092 } 5093 5094 status_t status = chain->addEffect_l(effect); 5095 if (status != NO_ERROR) { 5096 if (chainCreated) { 5097 removeEffectChain_l(chain); 5098 } 5099 return status; 5100 } 5101 5102 effect->setDevice(mDevice); 5103 effect->setMode(mAudioFlinger->getMode()); 5104 return NO_ERROR; 5105} 5106 5107void AudioFlinger::PlaybackThread::removeEffect_l(const sp<EffectModule>& effect) { 5108 5109 LOGV("removeEffect_l() %p effect %p", this, effect.get()); 5110 effect_descriptor_t desc = effect->desc(); 5111 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5112 detachAuxEffect_l(effect->id()); 5113 } 5114 5115 sp<EffectChain> chain = effect->chain().promote(); 5116 if (chain != 0) { 5117 // remove effect chain if removing last effect 5118 if (chain->removeEffect_l(effect) == 0) { 5119 removeEffectChain_l(chain); 5120 } 5121 } else { 5122 LOGW("removeEffect_l() %p cannot promote chain for effect %p", this, effect.get()); 5123 } 5124} 5125 5126void AudioFlinger::PlaybackThread::disconnectEffect(const sp<EffectModule>& effect, 5127 const wp<EffectHandle>& handle) { 5128 Mutex::Autolock _l(mLock); 5129 LOGV("disconnectEffect() %p effect %p", this, effect.get()); 5130 // delete the effect module if removing last handle on it 5131 if (effect->removeHandle(handle) == 0) { 5132 removeEffect_l(effect); 5133 AudioSystem::unregisterEffect(effect->id()); 5134 } 5135} 5136 5137status_t AudioFlinger::PlaybackThread::addEffectChain_l(const sp<EffectChain>& chain) 5138{ 5139 int session = chain->sessionId(); 5140 int16_t *buffer = mMixBuffer; 5141 bool ownsBuffer = false; 5142 5143 LOGV("addEffectChain_l() %p on thread %p for session %d", chain.get(), this, session); 5144 if (session > 0) { 5145 // Only one effect chain can be present in direct output thread and it uses 5146 // the mix buffer as input 5147 if (mType != DIRECT) { 5148 size_t numSamples = mFrameCount * mChannelCount; 5149 buffer = new int16_t[numSamples]; 5150 memset(buffer, 0, numSamples * sizeof(int16_t)); 5151 LOGV("addEffectChain_l() creating new input buffer %p session %d", buffer, session); 5152 ownsBuffer = true; 5153 } 5154 5155 // Attach all tracks with same session ID to this chain. 5156 for (size_t i = 0; i < mTracks.size(); ++i) { 5157 sp<Track> track = mTracks[i]; 5158 if (session == track->sessionId()) { 5159 LOGV("addEffectChain_l() track->setMainBuffer track %p buffer %p", track.get(), buffer); 5160 track->setMainBuffer(buffer); 5161 chain->incTrackCnt(); 5162 } 5163 } 5164 5165 // indicate all active tracks in the chain 5166 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5167 sp<Track> track = mActiveTracks[i].promote(); 5168 if (track == 0) continue; 5169 if (session == track->sessionId()) { 5170 LOGV("addEffectChain_l() activating track %p on session %d", track.get(), session); 5171 chain->incActiveTrackCnt(); 5172 } 5173 } 5174 } 5175 5176 chain->setInBuffer(buffer, ownsBuffer); 5177 chain->setOutBuffer(mMixBuffer); 5178 // Effect chain for session AUDIO_SESSION_OUTPUT_STAGE is inserted at end of effect 5179 // chains list in order to be processed last as it contains output stage effects 5180 // Effect chain for session AUDIO_SESSION_OUTPUT_MIX is inserted before 5181 // session AUDIO_SESSION_OUTPUT_STAGE to be processed 5182 // after track specific effects and before output stage 5183 // It is therefore mandatory that AUDIO_SESSION_OUTPUT_MIX == 0 and 5184 // that AUDIO_SESSION_OUTPUT_STAGE < AUDIO_SESSION_OUTPUT_MIX 5185 // Effect chain for other sessions are inserted at beginning of effect 5186 // chains list to be processed before output mix effects. Relative order between other 5187 // sessions is not important 5188 size_t size = mEffectChains.size(); 5189 size_t i = 0; 5190 for (i = 0; i < size; i++) { 5191 if (mEffectChains[i]->sessionId() < session) break; 5192 } 5193 mEffectChains.insertAt(chain, i); 5194 5195 return NO_ERROR; 5196} 5197 5198size_t AudioFlinger::PlaybackThread::removeEffectChain_l(const sp<EffectChain>& chain) 5199{ 5200 int session = chain->sessionId(); 5201 5202 LOGV("removeEffectChain_l() %p from thread %p for session %d", chain.get(), this, session); 5203 5204 for (size_t i = 0; i < mEffectChains.size(); i++) { 5205 if (chain == mEffectChains[i]) { 5206 mEffectChains.removeAt(i); 5207 // detach all active tracks from the chain 5208 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5209 sp<Track> track = mActiveTracks[i].promote(); 5210 if (track == 0) continue; 5211 if (session == track->sessionId()) { 5212 LOGV("removeEffectChain_l(): stopping track on chain %p for session Id: %d", 5213 chain.get(), session); 5214 chain->decActiveTrackCnt(); 5215 } 5216 } 5217 5218 // detach all tracks with same session ID from this chain 5219 for (size_t i = 0; i < mTracks.size(); ++i) { 5220 sp<Track> track = mTracks[i]; 5221 if (session == track->sessionId()) { 5222 track->setMainBuffer(mMixBuffer); 5223 chain->decTrackCnt(); 5224 } 5225 } 5226 break; 5227 } 5228 } 5229 return mEffectChains.size(); 5230} 5231 5232void AudioFlinger::PlaybackThread::lockEffectChains_l( 5233 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5234{ 5235 effectChains = mEffectChains; 5236 for (size_t i = 0; i < mEffectChains.size(); i++) { 5237 mEffectChains[i]->lock(); 5238 } 5239} 5240 5241void AudioFlinger::PlaybackThread::unlockEffectChains( 5242 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5243{ 5244 for (size_t i = 0; i < effectChains.size(); i++) { 5245 effectChains[i]->unlock(); 5246 } 5247} 5248 5249 5250sp<AudioFlinger::EffectModule> AudioFlinger::PlaybackThread::getEffect_l(int sessionId, int effectId) 5251{ 5252 sp<EffectModule> effect; 5253 5254 sp<EffectChain> chain = getEffectChain_l(sessionId); 5255 if (chain != 0) { 5256 effect = chain->getEffectFromId_l(effectId); 5257 } 5258 return effect; 5259} 5260 5261status_t AudioFlinger::PlaybackThread::attachAuxEffect( 5262 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5263{ 5264 Mutex::Autolock _l(mLock); 5265 return attachAuxEffect_l(track, EffectId); 5266} 5267 5268status_t AudioFlinger::PlaybackThread::attachAuxEffect_l( 5269 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5270{ 5271 status_t status = NO_ERROR; 5272 5273 if (EffectId == 0) { 5274 track->setAuxBuffer(0, NULL); 5275 } else { 5276 // Auxiliary effects are always in audio session AUDIO_SESSION_OUTPUT_MIX 5277 sp<EffectModule> effect = getEffect_l(AUDIO_SESSION_OUTPUT_MIX, EffectId); 5278 if (effect != 0) { 5279 if ((effect->desc().flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5280 track->setAuxBuffer(EffectId, (int32_t *)effect->inBuffer()); 5281 } else { 5282 status = INVALID_OPERATION; 5283 } 5284 } else { 5285 status = BAD_VALUE; 5286 } 5287 } 5288 return status; 5289} 5290 5291void AudioFlinger::PlaybackThread::detachAuxEffect_l(int effectId) 5292{ 5293 for (size_t i = 0; i < mTracks.size(); ++i) { 5294 sp<Track> track = mTracks[i]; 5295 if (track->auxEffectId() == effectId) { 5296 attachAuxEffect_l(track, 0); 5297 } 5298 } 5299} 5300 5301// ---------------------------------------------------------------------------- 5302// EffectModule implementation 5303// ---------------------------------------------------------------------------- 5304 5305#undef LOG_TAG 5306#define LOG_TAG "AudioFlinger::EffectModule" 5307 5308AudioFlinger::EffectModule::EffectModule(const wp<ThreadBase>& wThread, 5309 const wp<AudioFlinger::EffectChain>& chain, 5310 effect_descriptor_t *desc, 5311 int id, 5312 int sessionId) 5313 : mThread(wThread), mChain(chain), mId(id), mSessionId(sessionId), mEffectInterface(NULL), 5314 mStatus(NO_INIT), mState(IDLE) 5315{ 5316 LOGV("Constructor %p", this); 5317 int lStatus; 5318 sp<ThreadBase> thread = mThread.promote(); 5319 if (thread == 0) { 5320 return; 5321 } 5322 PlaybackThread *p = (PlaybackThread *)thread.get(); 5323 5324 memcpy(&mDescriptor, desc, sizeof(effect_descriptor_t)); 5325 5326 // create effect engine from effect factory 5327 mStatus = EffectCreate(&desc->uuid, sessionId, p->id(), &mEffectInterface); 5328 5329 if (mStatus != NO_ERROR) { 5330 return; 5331 } 5332 lStatus = init(); 5333 if (lStatus < 0) { 5334 mStatus = lStatus; 5335 goto Error; 5336 } 5337 5338 LOGV("Constructor success name %s, Interface %p", mDescriptor.name, mEffectInterface); 5339 return; 5340Error: 5341 EffectRelease(mEffectInterface); 5342 mEffectInterface = NULL; 5343 LOGV("Constructor Error %d", mStatus); 5344} 5345 5346AudioFlinger::EffectModule::~EffectModule() 5347{ 5348 LOGV("Destructor %p", this); 5349 if (mEffectInterface != NULL) { 5350 // release effect engine 5351 EffectRelease(mEffectInterface); 5352 } 5353} 5354 5355status_t AudioFlinger::EffectModule::addHandle(sp<EffectHandle>& handle) 5356{ 5357 status_t status; 5358 5359 Mutex::Autolock _l(mLock); 5360 // First handle in mHandles has highest priority and controls the effect module 5361 int priority = handle->priority(); 5362 size_t size = mHandles.size(); 5363 sp<EffectHandle> h; 5364 size_t i; 5365 for (i = 0; i < size; i++) { 5366 h = mHandles[i].promote(); 5367 if (h == 0) continue; 5368 if (h->priority() <= priority) break; 5369 } 5370 // if inserted in first place, move effect control from previous owner to this handle 5371 if (i == 0) { 5372 if (h != 0) { 5373 h->setControl(false, true); 5374 } 5375 handle->setControl(true, false); 5376 status = NO_ERROR; 5377 } else { 5378 status = ALREADY_EXISTS; 5379 } 5380 mHandles.insertAt(handle, i); 5381 return status; 5382} 5383 5384size_t AudioFlinger::EffectModule::removeHandle(const wp<EffectHandle>& handle) 5385{ 5386 Mutex::Autolock _l(mLock); 5387 size_t size = mHandles.size(); 5388 size_t i; 5389 for (i = 0; i < size; i++) { 5390 if (mHandles[i] == handle) break; 5391 } 5392 if (i == size) { 5393 return size; 5394 } 5395 mHandles.removeAt(i); 5396 size = mHandles.size(); 5397 // if removed from first place, move effect control from this handle to next in line 5398 if (i == 0 && size != 0) { 5399 sp<EffectHandle> h = mHandles[0].promote(); 5400 if (h != 0) { 5401 h->setControl(true, true); 5402 } 5403 } 5404 5405 // Release effect engine here so that it is done immediately. Otherwise it will be released 5406 // by the destructor when the last strong reference on the this object is released which can 5407 // happen after next process is called on this effect. 5408 if (size == 0 && mEffectInterface != NULL) { 5409 // release effect engine 5410 EffectRelease(mEffectInterface); 5411 mEffectInterface = NULL; 5412 } 5413 5414 return size; 5415} 5416 5417void AudioFlinger::EffectModule::disconnect(const wp<EffectHandle>& handle) 5418{ 5419 // keep a strong reference on this EffectModule to avoid calling the 5420 // destructor before we exit 5421 sp<EffectModule> keep(this); 5422 { 5423 sp<ThreadBase> thread = mThread.promote(); 5424 if (thread != 0) { 5425 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 5426 playbackThread->disconnectEffect(keep, handle); 5427 } 5428 } 5429} 5430 5431void AudioFlinger::EffectModule::updateState() { 5432 Mutex::Autolock _l(mLock); 5433 5434 switch (mState) { 5435 case RESTART: 5436 reset_l(); 5437 // FALL THROUGH 5438 5439 case STARTING: 5440 // clear auxiliary effect input buffer for next accumulation 5441 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5442 memset(mConfig.inputCfg.buffer.raw, 5443 0, 5444 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 5445 } 5446 start_l(); 5447 mState = ACTIVE; 5448 break; 5449 case STOPPING: 5450 stop_l(); 5451 mDisableWaitCnt = mMaxDisableWaitCnt; 5452 mState = STOPPED; 5453 break; 5454 case STOPPED: 5455 // mDisableWaitCnt is forced to 1 by process() when the engine indicates the end of the 5456 // turn off sequence. 5457 if (--mDisableWaitCnt == 0) { 5458 reset_l(); 5459 mState = IDLE; 5460 } 5461 break; 5462 default: //IDLE , ACTIVE 5463 break; 5464 } 5465} 5466 5467void AudioFlinger::EffectModule::process() 5468{ 5469 Mutex::Autolock _l(mLock); 5470 5471 if (mEffectInterface == NULL || 5472 mConfig.inputCfg.buffer.raw == NULL || 5473 mConfig.outputCfg.buffer.raw == NULL) { 5474 return; 5475 } 5476 5477 if (isProcessEnabled()) { 5478 // do 32 bit to 16 bit conversion for auxiliary effect input buffer 5479 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5480 AudioMixer::ditherAndClamp(mConfig.inputCfg.buffer.s32, 5481 mConfig.inputCfg.buffer.s32, 5482 mConfig.inputCfg.buffer.frameCount/2); 5483 } 5484 5485 // do the actual processing in the effect engine 5486 int ret = (*mEffectInterface)->process(mEffectInterface, 5487 &mConfig.inputCfg.buffer, 5488 &mConfig.outputCfg.buffer); 5489 5490 // force transition to IDLE state when engine is ready 5491 if (mState == STOPPED && ret == -ENODATA) { 5492 mDisableWaitCnt = 1; 5493 } 5494 5495 // clear auxiliary effect input buffer for next accumulation 5496 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5497 memset(mConfig.inputCfg.buffer.raw, 0, 5498 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 5499 } 5500 } else if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_INSERT && 5501 mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 5502 // If an insert effect is idle and input buffer is different from output buffer, 5503 // accumulate input onto output 5504 sp<EffectChain> chain = mChain.promote(); 5505 if (chain != 0 && chain->activeTrackCnt() != 0) { 5506 size_t frameCnt = mConfig.inputCfg.buffer.frameCount * 2; //always stereo here 5507 int16_t *in = mConfig.inputCfg.buffer.s16; 5508 int16_t *out = mConfig.outputCfg.buffer.s16; 5509 for (size_t i = 0; i < frameCnt; i++) { 5510 out[i] = clamp16((int32_t)out[i] + (int32_t)in[i]); 5511 } 5512 } 5513 } 5514} 5515 5516void AudioFlinger::EffectModule::reset_l() 5517{ 5518 if (mEffectInterface == NULL) { 5519 return; 5520 } 5521 (*mEffectInterface)->command(mEffectInterface, EFFECT_CMD_RESET, 0, NULL, 0, NULL); 5522} 5523 5524status_t AudioFlinger::EffectModule::configure() 5525{ 5526 uint32_t channels; 5527 if (mEffectInterface == NULL) { 5528 return NO_INIT; 5529 } 5530 5531 sp<ThreadBase> thread = mThread.promote(); 5532 if (thread == 0) { 5533 return DEAD_OBJECT; 5534 } 5535 5536 // TODO: handle configuration of effects replacing track process 5537 if (thread->channelCount() == 1) { 5538 channels = CHANNEL_MONO; 5539 } else { 5540 channels = CHANNEL_STEREO; 5541 } 5542 5543 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5544 mConfig.inputCfg.channels = CHANNEL_MONO; 5545 } else { 5546 mConfig.inputCfg.channels = channels; 5547 } 5548 mConfig.outputCfg.channels = channels; 5549 mConfig.inputCfg.format = SAMPLE_FORMAT_PCM_S15; 5550 mConfig.outputCfg.format = SAMPLE_FORMAT_PCM_S15; 5551 mConfig.inputCfg.samplingRate = thread->sampleRate(); 5552 mConfig.outputCfg.samplingRate = mConfig.inputCfg.samplingRate; 5553 mConfig.inputCfg.bufferProvider.cookie = NULL; 5554 mConfig.inputCfg.bufferProvider.getBuffer = NULL; 5555 mConfig.inputCfg.bufferProvider.releaseBuffer = NULL; 5556 mConfig.outputCfg.bufferProvider.cookie = NULL; 5557 mConfig.outputCfg.bufferProvider.getBuffer = NULL; 5558 mConfig.outputCfg.bufferProvider.releaseBuffer = NULL; 5559 mConfig.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ; 5560 // Insert effect: 5561 // - in session AUDIO_SESSION_OUTPUT_MIX or AUDIO_SESSION_OUTPUT_STAGE, 5562 // always overwrites output buffer: input buffer == output buffer 5563 // - in other sessions: 5564 // last effect in the chain accumulates in output buffer: input buffer != output buffer 5565 // other effect: overwrites output buffer: input buffer == output buffer 5566 // Auxiliary effect: 5567 // accumulates in output buffer: input buffer != output buffer 5568 // Therefore: accumulate <=> input buffer != output buffer 5569 if (mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 5570 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE; 5571 } else { 5572 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_WRITE; 5573 } 5574 mConfig.inputCfg.mask = EFFECT_CONFIG_ALL; 5575 mConfig.outputCfg.mask = EFFECT_CONFIG_ALL; 5576 mConfig.inputCfg.buffer.frameCount = thread->frameCount(); 5577 mConfig.outputCfg.buffer.frameCount = mConfig.inputCfg.buffer.frameCount; 5578 5579 LOGV("configure() %p thread %p buffer %p framecount %d", 5580 this, thread.get(), mConfig.inputCfg.buffer.raw, mConfig.inputCfg.buffer.frameCount); 5581 5582 status_t cmdStatus; 5583 uint32_t size = sizeof(int); 5584 status_t status = (*mEffectInterface)->command(mEffectInterface, 5585 EFFECT_CMD_CONFIGURE, 5586 sizeof(effect_config_t), 5587 &mConfig, 5588 &size, 5589 &cmdStatus); 5590 if (status == 0) { 5591 status = cmdStatus; 5592 } 5593 5594 mMaxDisableWaitCnt = (MAX_DISABLE_TIME_MS * mConfig.outputCfg.samplingRate) / 5595 (1000 * mConfig.outputCfg.buffer.frameCount); 5596 5597 return status; 5598} 5599 5600status_t AudioFlinger::EffectModule::init() 5601{ 5602 Mutex::Autolock _l(mLock); 5603 if (mEffectInterface == NULL) { 5604 return NO_INIT; 5605 } 5606 status_t cmdStatus; 5607 uint32_t size = sizeof(status_t); 5608 status_t status = (*mEffectInterface)->command(mEffectInterface, 5609 EFFECT_CMD_INIT, 5610 0, 5611 NULL, 5612 &size, 5613 &cmdStatus); 5614 if (status == 0) { 5615 status = cmdStatus; 5616 } 5617 return status; 5618} 5619 5620status_t AudioFlinger::EffectModule::start_l() 5621{ 5622 if (mEffectInterface == NULL) { 5623 return NO_INIT; 5624 } 5625 status_t cmdStatus; 5626 uint32_t size = sizeof(status_t); 5627 status_t status = (*mEffectInterface)->command(mEffectInterface, 5628 EFFECT_CMD_ENABLE, 5629 0, 5630 NULL, 5631 &size, 5632 &cmdStatus); 5633 if (status == 0) { 5634 status = cmdStatus; 5635 } 5636 return status; 5637} 5638 5639status_t AudioFlinger::EffectModule::stop_l() 5640{ 5641 if (mEffectInterface == NULL) { 5642 return NO_INIT; 5643 } 5644 status_t cmdStatus; 5645 uint32_t size = sizeof(status_t); 5646 status_t status = (*mEffectInterface)->command(mEffectInterface, 5647 EFFECT_CMD_DISABLE, 5648 0, 5649 NULL, 5650 &size, 5651 &cmdStatus); 5652 if (status == 0) { 5653 status = cmdStatus; 5654 } 5655 return status; 5656} 5657 5658status_t AudioFlinger::EffectModule::command(uint32_t cmdCode, 5659 uint32_t cmdSize, 5660 void *pCmdData, 5661 uint32_t *replySize, 5662 void *pReplyData) 5663{ 5664 Mutex::Autolock _l(mLock); 5665// LOGV("command(), cmdCode: %d, mEffectInterface: %p", cmdCode, mEffectInterface); 5666 5667 if (mEffectInterface == NULL) { 5668 return NO_INIT; 5669 } 5670 status_t status = (*mEffectInterface)->command(mEffectInterface, 5671 cmdCode, 5672 cmdSize, 5673 pCmdData, 5674 replySize, 5675 pReplyData); 5676 if (cmdCode != EFFECT_CMD_GET_PARAM && status == NO_ERROR) { 5677 uint32_t size = (replySize == NULL) ? 0 : *replySize; 5678 for (size_t i = 1; i < mHandles.size(); i++) { 5679 sp<EffectHandle> h = mHandles[i].promote(); 5680 if (h != 0) { 5681 h->commandExecuted(cmdCode, cmdSize, pCmdData, size, pReplyData); 5682 } 5683 } 5684 } 5685 return status; 5686} 5687 5688status_t AudioFlinger::EffectModule::setEnabled(bool enabled) 5689{ 5690 Mutex::Autolock _l(mLock); 5691 LOGV("setEnabled %p enabled %d", this, enabled); 5692 5693 if (enabled != isEnabled()) { 5694 switch (mState) { 5695 // going from disabled to enabled 5696 case IDLE: 5697 mState = STARTING; 5698 break; 5699 case STOPPED: 5700 mState = RESTART; 5701 break; 5702 case STOPPING: 5703 mState = ACTIVE; 5704 break; 5705 5706 // going from enabled to disabled 5707 case RESTART: 5708 mState = STOPPED; 5709 break; 5710 case STARTING: 5711 mState = IDLE; 5712 break; 5713 case ACTIVE: 5714 mState = STOPPING; 5715 break; 5716 } 5717 for (size_t i = 1; i < mHandles.size(); i++) { 5718 sp<EffectHandle> h = mHandles[i].promote(); 5719 if (h != 0) { 5720 h->setEnabled(enabled); 5721 } 5722 } 5723 } 5724 return NO_ERROR; 5725} 5726 5727bool AudioFlinger::EffectModule::isEnabled() 5728{ 5729 switch (mState) { 5730 case RESTART: 5731 case STARTING: 5732 case ACTIVE: 5733 return true; 5734 case IDLE: 5735 case STOPPING: 5736 case STOPPED: 5737 default: 5738 return false; 5739 } 5740} 5741 5742bool AudioFlinger::EffectModule::isProcessEnabled() 5743{ 5744 switch (mState) { 5745 case RESTART: 5746 case ACTIVE: 5747 case STOPPING: 5748 case STOPPED: 5749 return true; 5750 case IDLE: 5751 case STARTING: 5752 default: 5753 return false; 5754 } 5755} 5756 5757status_t AudioFlinger::EffectModule::setVolume(uint32_t *left, uint32_t *right, bool controller) 5758{ 5759 Mutex::Autolock _l(mLock); 5760 status_t status = NO_ERROR; 5761 5762 // Send volume indication if EFFECT_FLAG_VOLUME_IND is set and read back altered volume 5763 // if controller flag is set (Note that controller == TRUE => EFFECT_FLAG_VOLUME_CTRL set) 5764 if (isProcessEnabled() && 5765 ((mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL || 5766 (mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_IND)) { 5767 status_t cmdStatus; 5768 uint32_t volume[2]; 5769 uint32_t *pVolume = NULL; 5770 uint32_t size = sizeof(volume); 5771 volume[0] = *left; 5772 volume[1] = *right; 5773 if (controller) { 5774 pVolume = volume; 5775 } 5776 status = (*mEffectInterface)->command(mEffectInterface, 5777 EFFECT_CMD_SET_VOLUME, 5778 size, 5779 volume, 5780 &size, 5781 pVolume); 5782 if (controller && status == NO_ERROR && size == sizeof(volume)) { 5783 *left = volume[0]; 5784 *right = volume[1]; 5785 } 5786 } 5787 return status; 5788} 5789 5790status_t AudioFlinger::EffectModule::setDevice(uint32_t device) 5791{ 5792 Mutex::Autolock _l(mLock); 5793 status_t status = NO_ERROR; 5794 if ((mDescriptor.flags & EFFECT_FLAG_DEVICE_MASK) == EFFECT_FLAG_DEVICE_IND) { 5795 // convert device bit field from AudioSystem to EffectApi format. 5796 device = deviceAudioSystemToEffectApi(device); 5797 if (device == 0) { 5798 return BAD_VALUE; 5799 } 5800 status_t cmdStatus; 5801 uint32_t size = sizeof(status_t); 5802 status = (*mEffectInterface)->command(mEffectInterface, 5803 EFFECT_CMD_SET_DEVICE, 5804 sizeof(uint32_t), 5805 &device, 5806 &size, 5807 &cmdStatus); 5808 if (status == NO_ERROR) { 5809 status = cmdStatus; 5810 } 5811 } 5812 return status; 5813} 5814 5815status_t AudioFlinger::EffectModule::setMode(uint32_t mode) 5816{ 5817 Mutex::Autolock _l(mLock); 5818 status_t status = NO_ERROR; 5819 if ((mDescriptor.flags & EFFECT_FLAG_AUDIO_MODE_MASK) == EFFECT_FLAG_AUDIO_MODE_IND) { 5820 // convert audio mode from AudioSystem to EffectApi format. 5821 int effectMode = modeAudioSystemToEffectApi(mode); 5822 if (effectMode < 0) { 5823 return BAD_VALUE; 5824 } 5825 status_t cmdStatus; 5826 uint32_t size = sizeof(status_t); 5827 status = (*mEffectInterface)->command(mEffectInterface, 5828 EFFECT_CMD_SET_AUDIO_MODE, 5829 sizeof(int), 5830 &effectMode, 5831 &size, 5832 &cmdStatus); 5833 if (status == NO_ERROR) { 5834 status = cmdStatus; 5835 } 5836 } 5837 return status; 5838} 5839 5840// update this table when AudioSystem::audio_devices or audio_device_e (in EffectApi.h) are modified 5841const uint32_t AudioFlinger::EffectModule::sDeviceConvTable[] = { 5842 DEVICE_EARPIECE, // AUDIO_DEVICE_OUT_EARPIECE 5843 DEVICE_SPEAKER, // AUDIO_DEVICE_OUT_SPEAKER 5844 DEVICE_WIRED_HEADSET, // case AUDIO_DEVICE_OUT_WIRED_HEADSET 5845 DEVICE_WIRED_HEADPHONE, // AUDIO_DEVICE_OUT_WIRED_HEADPHONE 5846 DEVICE_BLUETOOTH_SCO, // AUDIO_DEVICE_OUT_BLUETOOTH_SCO 5847 DEVICE_BLUETOOTH_SCO_HEADSET, // AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET 5848 DEVICE_BLUETOOTH_SCO_CARKIT, // AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT 5849 DEVICE_BLUETOOTH_A2DP, // AUDIO_DEVICE_OUT_BLUETOOTH_A2DP 5850 DEVICE_BLUETOOTH_A2DP_HEADPHONES, // AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES 5851 DEVICE_BLUETOOTH_A2DP_SPEAKER, // AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER 5852 DEVICE_AUX_DIGITAL // AUDIO_DEVICE_OUT_AUX_DIGITAL 5853}; 5854 5855uint32_t AudioFlinger::EffectModule::deviceAudioSystemToEffectApi(uint32_t device) 5856{ 5857 uint32_t deviceOut = 0; 5858 while (device) { 5859 const uint32_t i = 31 - __builtin_clz(device); 5860 device &= ~(1 << i); 5861 if (i >= sizeof(sDeviceConvTable)/sizeof(uint32_t)) { 5862 LOGE("device conversion error for AudioSystem device 0x%08x", device); 5863 return 0; 5864 } 5865 deviceOut |= (uint32_t)sDeviceConvTable[i]; 5866 } 5867 return deviceOut; 5868} 5869 5870// update this table when AudioSystem::audio_mode or audio_mode_e (in EffectApi.h) are modified 5871const uint32_t AudioFlinger::EffectModule::sModeConvTable[] = { 5872 AUDIO_EFFECT_MODE_NORMAL, // AUDIO_MODE_NORMAL 5873 AUDIO_EFFECT_MODE_RINGTONE, // AUDIO_MODE_RINGTONE 5874 AUDIO_EFFECT_MODE_IN_CALL, // AUDIO_MODE_IN_CALL 5875 AUDIO_EFFECT_MODE_IN_CALL // AUDIO_MODE_IN_COMMUNICATION, same conversion as for AUDIO_MODE_IN_CALL 5876}; 5877 5878int AudioFlinger::EffectModule::modeAudioSystemToEffectApi(uint32_t mode) 5879{ 5880 int modeOut = -1; 5881 if (mode < sizeof(sModeConvTable) / sizeof(uint32_t)) { 5882 modeOut = (int)sModeConvTable[mode]; 5883 } 5884 return modeOut; 5885} 5886 5887status_t AudioFlinger::EffectModule::dump(int fd, const Vector<String16>& args) 5888{ 5889 const size_t SIZE = 256; 5890 char buffer[SIZE]; 5891 String8 result; 5892 5893 snprintf(buffer, SIZE, "\tEffect ID %d:\n", mId); 5894 result.append(buffer); 5895 5896 bool locked = tryLock(mLock); 5897 // failed to lock - AudioFlinger is probably deadlocked 5898 if (!locked) { 5899 result.append("\t\tCould not lock Fx mutex:\n"); 5900 } 5901 5902 result.append("\t\tSession Status State Engine:\n"); 5903 snprintf(buffer, SIZE, "\t\t%05d %03d %03d 0x%08x\n", 5904 mSessionId, mStatus, mState, (uint32_t)mEffectInterface); 5905 result.append(buffer); 5906 5907 result.append("\t\tDescriptor:\n"); 5908 snprintf(buffer, SIZE, "\t\t- UUID: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 5909 mDescriptor.uuid.timeLow, mDescriptor.uuid.timeMid, mDescriptor.uuid.timeHiAndVersion, 5910 mDescriptor.uuid.clockSeq, mDescriptor.uuid.node[0], mDescriptor.uuid.node[1],mDescriptor.uuid.node[2], 5911 mDescriptor.uuid.node[3],mDescriptor.uuid.node[4],mDescriptor.uuid.node[5]); 5912 result.append(buffer); 5913 snprintf(buffer, SIZE, "\t\t- TYPE: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 5914 mDescriptor.type.timeLow, mDescriptor.type.timeMid, mDescriptor.type.timeHiAndVersion, 5915 mDescriptor.type.clockSeq, mDescriptor.type.node[0], mDescriptor.type.node[1],mDescriptor.type.node[2], 5916 mDescriptor.type.node[3],mDescriptor.type.node[4],mDescriptor.type.node[5]); 5917 result.append(buffer); 5918 snprintf(buffer, SIZE, "\t\t- apiVersion: %04X\n\t\t- flags: %08X\n", 5919 mDescriptor.apiVersion, 5920 mDescriptor.flags); 5921 result.append(buffer); 5922 snprintf(buffer, SIZE, "\t\t- name: %s\n", 5923 mDescriptor.name); 5924 result.append(buffer); 5925 snprintf(buffer, SIZE, "\t\t- implementor: %s\n", 5926 mDescriptor.implementor); 5927 result.append(buffer); 5928 5929 result.append("\t\t- Input configuration:\n"); 5930 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 5931 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 5932 (uint32_t)mConfig.inputCfg.buffer.raw, 5933 mConfig.inputCfg.buffer.frameCount, 5934 mConfig.inputCfg.samplingRate, 5935 mConfig.inputCfg.channels, 5936 mConfig.inputCfg.format); 5937 result.append(buffer); 5938 5939 result.append("\t\t- Output configuration:\n"); 5940 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 5941 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 5942 (uint32_t)mConfig.outputCfg.buffer.raw, 5943 mConfig.outputCfg.buffer.frameCount, 5944 mConfig.outputCfg.samplingRate, 5945 mConfig.outputCfg.channels, 5946 mConfig.outputCfg.format); 5947 result.append(buffer); 5948 5949 snprintf(buffer, SIZE, "\t\t%d Clients:\n", mHandles.size()); 5950 result.append(buffer); 5951 result.append("\t\t\tPid Priority Ctrl Locked client server\n"); 5952 for (size_t i = 0; i < mHandles.size(); ++i) { 5953 sp<EffectHandle> handle = mHandles[i].promote(); 5954 if (handle != 0) { 5955 handle->dump(buffer, SIZE); 5956 result.append(buffer); 5957 } 5958 } 5959 5960 result.append("\n"); 5961 5962 write(fd, result.string(), result.length()); 5963 5964 if (locked) { 5965 mLock.unlock(); 5966 } 5967 5968 return NO_ERROR; 5969} 5970 5971// ---------------------------------------------------------------------------- 5972// EffectHandle implementation 5973// ---------------------------------------------------------------------------- 5974 5975#undef LOG_TAG 5976#define LOG_TAG "AudioFlinger::EffectHandle" 5977 5978AudioFlinger::EffectHandle::EffectHandle(const sp<EffectModule>& effect, 5979 const sp<AudioFlinger::Client>& client, 5980 const sp<IEffectClient>& effectClient, 5981 int32_t priority) 5982 : BnEffect(), 5983 mEffect(effect), mEffectClient(effectClient), mClient(client), mPriority(priority), mHasControl(false) 5984{ 5985 LOGV("constructor %p", this); 5986 5987 int bufOffset = ((sizeof(effect_param_cblk_t) - 1) / sizeof(int) + 1) * sizeof(int); 5988 mCblkMemory = client->heap()->allocate(EFFECT_PARAM_BUFFER_SIZE + bufOffset); 5989 if (mCblkMemory != 0) { 5990 mCblk = static_cast<effect_param_cblk_t *>(mCblkMemory->pointer()); 5991 5992 if (mCblk) { 5993 new(mCblk) effect_param_cblk_t(); 5994 mBuffer = (uint8_t *)mCblk + bufOffset; 5995 } 5996 } else { 5997 LOGE("not enough memory for Effect size=%u", EFFECT_PARAM_BUFFER_SIZE + sizeof(effect_param_cblk_t)); 5998 return; 5999 } 6000} 6001 6002AudioFlinger::EffectHandle::~EffectHandle() 6003{ 6004 LOGV("Destructor %p", this); 6005 disconnect(); 6006} 6007 6008status_t AudioFlinger::EffectHandle::enable() 6009{ 6010 if (!mHasControl) return INVALID_OPERATION; 6011 if (mEffect == 0) return DEAD_OBJECT; 6012 6013 return mEffect->setEnabled(true); 6014} 6015 6016status_t AudioFlinger::EffectHandle::disable() 6017{ 6018 if (!mHasControl) return INVALID_OPERATION; 6019 if (mEffect == NULL) return DEAD_OBJECT; 6020 6021 return mEffect->setEnabled(false); 6022} 6023 6024void AudioFlinger::EffectHandle::disconnect() 6025{ 6026 if (mEffect == 0) { 6027 return; 6028 } 6029 mEffect->disconnect(this); 6030 // release sp on module => module destructor can be called now 6031 mEffect.clear(); 6032 if (mCblk) { 6033 mCblk->~effect_param_cblk_t(); // destroy our shared-structure. 6034 } 6035 mCblkMemory.clear(); // and free the shared memory 6036 if (mClient != 0) { 6037 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 6038 mClient.clear(); 6039 } 6040} 6041 6042status_t AudioFlinger::EffectHandle::command(uint32_t cmdCode, 6043 uint32_t cmdSize, 6044 void *pCmdData, 6045 uint32_t *replySize, 6046 void *pReplyData) 6047{ 6048// LOGV("command(), cmdCode: %d, mHasControl: %d, mEffect: %p", 6049// cmdCode, mHasControl, (mEffect == 0) ? 0 : mEffect.get()); 6050 6051 // only get parameter command is permitted for applications not controlling the effect 6052 if (!mHasControl && cmdCode != EFFECT_CMD_GET_PARAM) { 6053 return INVALID_OPERATION; 6054 } 6055 if (mEffect == 0) return DEAD_OBJECT; 6056 6057 // handle commands that are not forwarded transparently to effect engine 6058 if (cmdCode == EFFECT_CMD_SET_PARAM_COMMIT) { 6059 // No need to trylock() here as this function is executed in the binder thread serving a particular client process: 6060 // no risk to block the whole media server process or mixer threads is we are stuck here 6061 Mutex::Autolock _l(mCblk->lock); 6062 if (mCblk->clientIndex > EFFECT_PARAM_BUFFER_SIZE || 6063 mCblk->serverIndex > EFFECT_PARAM_BUFFER_SIZE) { 6064 mCblk->serverIndex = 0; 6065 mCblk->clientIndex = 0; 6066 return BAD_VALUE; 6067 } 6068 status_t status = NO_ERROR; 6069 while (mCblk->serverIndex < mCblk->clientIndex) { 6070 int reply; 6071 uint32_t rsize = sizeof(int); 6072 int *p = (int *)(mBuffer + mCblk->serverIndex); 6073 int size = *p++; 6074 if (((uint8_t *)p + size) > mBuffer + mCblk->clientIndex) { 6075 LOGW("command(): invalid parameter block size"); 6076 break; 6077 } 6078 effect_param_t *param = (effect_param_t *)p; 6079 if (param->psize == 0 || param->vsize == 0) { 6080 LOGW("command(): null parameter or value size"); 6081 mCblk->serverIndex += size; 6082 continue; 6083 } 6084 uint32_t psize = sizeof(effect_param_t) + 6085 ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + 6086 param->vsize; 6087 status_t ret = mEffect->command(EFFECT_CMD_SET_PARAM, 6088 psize, 6089 p, 6090 &rsize, 6091 &reply); 6092 // stop at first error encountered 6093 if (ret != NO_ERROR) { 6094 status = ret; 6095 *(int *)pReplyData = reply; 6096 break; 6097 } else if (reply != NO_ERROR) { 6098 *(int *)pReplyData = reply; 6099 break; 6100 } 6101 mCblk->serverIndex += size; 6102 } 6103 mCblk->serverIndex = 0; 6104 mCblk->clientIndex = 0; 6105 return status; 6106 } else if (cmdCode == EFFECT_CMD_ENABLE) { 6107 *(int *)pReplyData = NO_ERROR; 6108 return enable(); 6109 } else if (cmdCode == EFFECT_CMD_DISABLE) { 6110 *(int *)pReplyData = NO_ERROR; 6111 return disable(); 6112 } 6113 6114 return mEffect->command(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6115} 6116 6117sp<IMemory> AudioFlinger::EffectHandle::getCblk() const { 6118 return mCblkMemory; 6119} 6120 6121void AudioFlinger::EffectHandle::setControl(bool hasControl, bool signal) 6122{ 6123 LOGV("setControl %p control %d", this, hasControl); 6124 6125 mHasControl = hasControl; 6126 if (signal && mEffectClient != 0) { 6127 mEffectClient->controlStatusChanged(hasControl); 6128 } 6129} 6130 6131void AudioFlinger::EffectHandle::commandExecuted(uint32_t cmdCode, 6132 uint32_t cmdSize, 6133 void *pCmdData, 6134 uint32_t replySize, 6135 void *pReplyData) 6136{ 6137 if (mEffectClient != 0) { 6138 mEffectClient->commandExecuted(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6139 } 6140} 6141 6142 6143 6144void AudioFlinger::EffectHandle::setEnabled(bool enabled) 6145{ 6146 if (mEffectClient != 0) { 6147 mEffectClient->enableStatusChanged(enabled); 6148 } 6149} 6150 6151status_t AudioFlinger::EffectHandle::onTransact( 6152 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 6153{ 6154 return BnEffect::onTransact(code, data, reply, flags); 6155} 6156 6157 6158void AudioFlinger::EffectHandle::dump(char* buffer, size_t size) 6159{ 6160 bool locked = tryLock(mCblk->lock); 6161 6162 snprintf(buffer, size, "\t\t\t%05d %05d %01u %01u %05u %05u\n", 6163 (mClient == NULL) ? getpid() : mClient->pid(), 6164 mPriority, 6165 mHasControl, 6166 !locked, 6167 mCblk->clientIndex, 6168 mCblk->serverIndex 6169 ); 6170 6171 if (locked) { 6172 mCblk->lock.unlock(); 6173 } 6174} 6175 6176#undef LOG_TAG 6177#define LOG_TAG "AudioFlinger::EffectChain" 6178 6179AudioFlinger::EffectChain::EffectChain(const wp<ThreadBase>& wThread, 6180 int sessionId) 6181 : mThread(wThread), mSessionId(sessionId), mActiveTrackCnt(0), mTrackCnt(0), 6182 mOwnInBuffer(false), mVolumeCtrlIdx(-1), mLeftVolume(UINT_MAX), mRightVolume(UINT_MAX), 6183 mNewLeftVolume(UINT_MAX), mNewRightVolume(UINT_MAX) 6184{ 6185 mStrategy = AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 6186} 6187 6188AudioFlinger::EffectChain::~EffectChain() 6189{ 6190 if (mOwnInBuffer) { 6191 delete mInBuffer; 6192 } 6193 6194} 6195 6196// getEffectFromDesc_l() must be called with PlaybackThread::mLock held 6197sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromDesc_l(effect_descriptor_t *descriptor) 6198{ 6199 sp<EffectModule> effect; 6200 size_t size = mEffects.size(); 6201 6202 for (size_t i = 0; i < size; i++) { 6203 if (memcmp(&mEffects[i]->desc().uuid, &descriptor->uuid, sizeof(effect_uuid_t)) == 0) { 6204 effect = mEffects[i]; 6205 break; 6206 } 6207 } 6208 return effect; 6209} 6210 6211// getEffectFromId_l() must be called with PlaybackThread::mLock held 6212sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromId_l(int id) 6213{ 6214 sp<EffectModule> effect; 6215 size_t size = mEffects.size(); 6216 6217 for (size_t i = 0; i < size; i++) { 6218 // by convention, return first effect if id provided is 0 (0 is never a valid id) 6219 if (id == 0 || mEffects[i]->id() == id) { 6220 effect = mEffects[i]; 6221 break; 6222 } 6223 } 6224 return effect; 6225} 6226 6227// Must be called with EffectChain::mLock locked 6228void AudioFlinger::EffectChain::process_l() 6229{ 6230 sp<ThreadBase> thread = mThread.promote(); 6231 if (thread == 0) { 6232 LOGW("process_l(): cannot promote mixer thread"); 6233 return; 6234 } 6235 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 6236 bool isGlobalSession = (mSessionId == AUDIO_SESSION_OUTPUT_MIX) || 6237 (mSessionId == AUDIO_SESSION_OUTPUT_STAGE); 6238 bool tracksOnSession = false; 6239 if (!isGlobalSession) { 6240 tracksOnSession = (trackCnt() != 0); 6241 } 6242 6243 // if no track is active, input buffer must be cleared here as the mixer process 6244 // will not do it 6245 if (tracksOnSession && 6246 activeTrackCnt() == 0) { 6247 size_t numSamples = playbackThread->frameCount() * playbackThread->channelCount(); 6248 memset(mInBuffer, 0, numSamples * sizeof(int16_t)); 6249 } 6250 6251 size_t size = mEffects.size(); 6252 // do not process effect if no track is present in same audio session 6253 if (isGlobalSession || tracksOnSession) { 6254 for (size_t i = 0; i < size; i++) { 6255 mEffects[i]->process(); 6256 } 6257 } 6258 for (size_t i = 0; i < size; i++) { 6259 mEffects[i]->updateState(); 6260 } 6261} 6262 6263// addEffect_l() must be called with PlaybackThread::mLock held 6264status_t AudioFlinger::EffectChain::addEffect_l(const sp<EffectModule>& effect) 6265{ 6266 effect_descriptor_t desc = effect->desc(); 6267 uint32_t insertPref = desc.flags & EFFECT_FLAG_INSERT_MASK; 6268 6269 Mutex::Autolock _l(mLock); 6270 effect->setChain(this); 6271 sp<ThreadBase> thread = mThread.promote(); 6272 if (thread == 0) { 6273 return NO_INIT; 6274 } 6275 effect->setThread(thread); 6276 6277 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6278 // Auxiliary effects are inserted at the beginning of mEffects vector as 6279 // they are processed first and accumulated in chain input buffer 6280 mEffects.insertAt(effect, 0); 6281 6282 // the input buffer for auxiliary effect contains mono samples in 6283 // 32 bit format. This is to avoid saturation in AudoMixer 6284 // accumulation stage. Saturation is done in EffectModule::process() before 6285 // calling the process in effect engine 6286 size_t numSamples = thread->frameCount(); 6287 int32_t *buffer = new int32_t[numSamples]; 6288 memset(buffer, 0, numSamples * sizeof(int32_t)); 6289 effect->setInBuffer((int16_t *)buffer); 6290 // auxiliary effects output samples to chain input buffer for further processing 6291 // by insert effects 6292 effect->setOutBuffer(mInBuffer); 6293 } else { 6294 // Insert effects are inserted at the end of mEffects vector as they are processed 6295 // after track and auxiliary effects. 6296 // Insert effect order as a function of indicated preference: 6297 // if EFFECT_FLAG_INSERT_EXCLUSIVE, insert in first position or reject if 6298 // another effect is present 6299 // else if EFFECT_FLAG_INSERT_FIRST, insert in first position or after the 6300 // last effect claiming first position 6301 // else if EFFECT_FLAG_INSERT_LAST, insert in last position or before the 6302 // first effect claiming last position 6303 // else if EFFECT_FLAG_INSERT_ANY insert after first or before last 6304 // Reject insertion if an effect with EFFECT_FLAG_INSERT_EXCLUSIVE is 6305 // already present 6306 6307 int size = (int)mEffects.size(); 6308 int idx_insert = size; 6309 int idx_insert_first = -1; 6310 int idx_insert_last = -1; 6311 6312 for (int i = 0; i < size; i++) { 6313 effect_descriptor_t d = mEffects[i]->desc(); 6314 uint32_t iMode = d.flags & EFFECT_FLAG_TYPE_MASK; 6315 uint32_t iPref = d.flags & EFFECT_FLAG_INSERT_MASK; 6316 if (iMode == EFFECT_FLAG_TYPE_INSERT) { 6317 // check invalid effect chaining combinations 6318 if (insertPref == EFFECT_FLAG_INSERT_EXCLUSIVE || 6319 iPref == EFFECT_FLAG_INSERT_EXCLUSIVE) { 6320 LOGW("addEffect_l() could not insert effect %s: exclusive conflict with %s", desc.name, d.name); 6321 return INVALID_OPERATION; 6322 } 6323 // remember position of first insert effect and by default 6324 // select this as insert position for new effect 6325 if (idx_insert == size) { 6326 idx_insert = i; 6327 } 6328 // remember position of last insert effect claiming 6329 // first position 6330 if (iPref == EFFECT_FLAG_INSERT_FIRST) { 6331 idx_insert_first = i; 6332 } 6333 // remember position of first insert effect claiming 6334 // last position 6335 if (iPref == EFFECT_FLAG_INSERT_LAST && 6336 idx_insert_last == -1) { 6337 idx_insert_last = i; 6338 } 6339 } 6340 } 6341 6342 // modify idx_insert from first position if needed 6343 if (insertPref == EFFECT_FLAG_INSERT_LAST) { 6344 if (idx_insert_last != -1) { 6345 idx_insert = idx_insert_last; 6346 } else { 6347 idx_insert = size; 6348 } 6349 } else { 6350 if (idx_insert_first != -1) { 6351 idx_insert = idx_insert_first + 1; 6352 } 6353 } 6354 6355 // always read samples from chain input buffer 6356 effect->setInBuffer(mInBuffer); 6357 6358 // if last effect in the chain, output samples to chain 6359 // output buffer, otherwise to chain input buffer 6360 if (idx_insert == size) { 6361 if (idx_insert != 0) { 6362 mEffects[idx_insert-1]->setOutBuffer(mInBuffer); 6363 mEffects[idx_insert-1]->configure(); 6364 } 6365 effect->setOutBuffer(mOutBuffer); 6366 } else { 6367 effect->setOutBuffer(mInBuffer); 6368 } 6369 mEffects.insertAt(effect, idx_insert); 6370 6371 LOGV("addEffect_l() effect %p, added in chain %p at rank %d", effect.get(), this, idx_insert); 6372 } 6373 effect->configure(); 6374 return NO_ERROR; 6375} 6376 6377// removeEffect_l() must be called with PlaybackThread::mLock held 6378size_t AudioFlinger::EffectChain::removeEffect_l(const sp<EffectModule>& effect) 6379{ 6380 Mutex::Autolock _l(mLock); 6381 int size = (int)mEffects.size(); 6382 int i; 6383 uint32_t type = effect->desc().flags & EFFECT_FLAG_TYPE_MASK; 6384 6385 for (i = 0; i < size; i++) { 6386 if (effect == mEffects[i]) { 6387 if (type == EFFECT_FLAG_TYPE_AUXILIARY) { 6388 delete[] effect->inBuffer(); 6389 } else { 6390 if (i == size - 1 && i != 0) { 6391 mEffects[i - 1]->setOutBuffer(mOutBuffer); 6392 mEffects[i - 1]->configure(); 6393 } 6394 } 6395 mEffects.removeAt(i); 6396 LOGV("removeEffect_l() effect %p, removed from chain %p at rank %d", effect.get(), this, i); 6397 break; 6398 } 6399 } 6400 6401 return mEffects.size(); 6402} 6403 6404// setDevice_l() must be called with PlaybackThread::mLock held 6405void AudioFlinger::EffectChain::setDevice_l(uint32_t device) 6406{ 6407 size_t size = mEffects.size(); 6408 for (size_t i = 0; i < size; i++) { 6409 mEffects[i]->setDevice(device); 6410 } 6411} 6412 6413// setMode_l() must be called with PlaybackThread::mLock held 6414void AudioFlinger::EffectChain::setMode_l(uint32_t mode) 6415{ 6416 size_t size = mEffects.size(); 6417 for (size_t i = 0; i < size; i++) { 6418 mEffects[i]->setMode(mode); 6419 } 6420} 6421 6422// setVolume_l() must be called with PlaybackThread::mLock held 6423bool AudioFlinger::EffectChain::setVolume_l(uint32_t *left, uint32_t *right) 6424{ 6425 uint32_t newLeft = *left; 6426 uint32_t newRight = *right; 6427 bool hasControl = false; 6428 int ctrlIdx = -1; 6429 size_t size = mEffects.size(); 6430 6431 // first update volume controller 6432 for (size_t i = size; i > 0; i--) { 6433 if (mEffects[i - 1]->isProcessEnabled() && 6434 (mEffects[i - 1]->desc().flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL) { 6435 ctrlIdx = i - 1; 6436 hasControl = true; 6437 break; 6438 } 6439 } 6440 6441 if (ctrlIdx == mVolumeCtrlIdx && *left == mLeftVolume && *right == mRightVolume) { 6442 if (hasControl) { 6443 *left = mNewLeftVolume; 6444 *right = mNewRightVolume; 6445 } 6446 return hasControl; 6447 } 6448 6449 mVolumeCtrlIdx = ctrlIdx; 6450 mLeftVolume = newLeft; 6451 mRightVolume = newRight; 6452 6453 // second get volume update from volume controller 6454 if (ctrlIdx >= 0) { 6455 mEffects[ctrlIdx]->setVolume(&newLeft, &newRight, true); 6456 mNewLeftVolume = newLeft; 6457 mNewRightVolume = newRight; 6458 } 6459 // then indicate volume to all other effects in chain. 6460 // Pass altered volume to effects before volume controller 6461 // and requested volume to effects after controller 6462 uint32_t lVol = newLeft; 6463 uint32_t rVol = newRight; 6464 6465 for (size_t i = 0; i < size; i++) { 6466 if ((int)i == ctrlIdx) continue; 6467 // this also works for ctrlIdx == -1 when there is no volume controller 6468 if ((int)i > ctrlIdx) { 6469 lVol = *left; 6470 rVol = *right; 6471 } 6472 mEffects[i]->setVolume(&lVol, &rVol, false); 6473 } 6474 *left = newLeft; 6475 *right = newRight; 6476 6477 return hasControl; 6478} 6479 6480status_t AudioFlinger::EffectChain::dump(int fd, const Vector<String16>& args) 6481{ 6482 const size_t SIZE = 256; 6483 char buffer[SIZE]; 6484 String8 result; 6485 6486 snprintf(buffer, SIZE, "Effects for session %d:\n", mSessionId); 6487 result.append(buffer); 6488 6489 bool locked = tryLock(mLock); 6490 // failed to lock - AudioFlinger is probably deadlocked 6491 if (!locked) { 6492 result.append("\tCould not lock mutex:\n"); 6493 } 6494 6495 result.append("\tNum fx In buffer Out buffer Active tracks:\n"); 6496 snprintf(buffer, SIZE, "\t%02d 0x%08x 0x%08x %d\n", 6497 mEffects.size(), 6498 (uint32_t)mInBuffer, 6499 (uint32_t)mOutBuffer, 6500 mActiveTrackCnt); 6501 result.append(buffer); 6502 write(fd, result.string(), result.size()); 6503 6504 for (size_t i = 0; i < mEffects.size(); ++i) { 6505 sp<EffectModule> effect = mEffects[i]; 6506 if (effect != 0) { 6507 effect->dump(fd, args); 6508 } 6509 } 6510 6511 if (locked) { 6512 mLock.unlock(); 6513 } 6514 6515 return NO_ERROR; 6516} 6517 6518#undef LOG_TAG 6519#define LOG_TAG "AudioFlinger" 6520 6521// ---------------------------------------------------------------------------- 6522 6523status_t AudioFlinger::onTransact( 6524 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 6525{ 6526 return BnAudioFlinger::onTransact(code, data, reply, flags); 6527} 6528 6529}; // namespace android 6530