AudioFlinger.cpp revision 64760240f931714858a59c1579f07264d7182ba2
1/* //device/include/server/AudioFlinger/AudioFlinger.cpp 2** 3** Copyright 2007, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18 19#define LOG_TAG "AudioFlinger" 20//#define LOG_NDEBUG 0 21 22#include <math.h> 23#include <signal.h> 24#include <sys/time.h> 25#include <sys/resource.h> 26 27#include <binder/IPCThreadState.h> 28#include <binder/IServiceManager.h> 29#include <utils/Log.h> 30#include <binder/Parcel.h> 31#include <binder/IPCThreadState.h> 32#include <utils/String16.h> 33#include <utils/threads.h> 34#include <utils/Atomic.h> 35 36#include <cutils/bitops.h> 37#include <cutils/properties.h> 38 39#include <media/AudioTrack.h> 40#include <media/AudioRecord.h> 41#include <media/IMediaPlayerService.h> 42 43#include <private/media/AudioTrackShared.h> 44#include <private/media/AudioEffectShared.h> 45 46#include <system/audio.h> 47#include <hardware/audio_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 } 1261 } 1262 lStatus = NO_ERROR; 1263 1264Exit: 1265 if(status) { 1266 *status = lStatus; 1267 } 1268 return track; 1269} 1270 1271uint32_t AudioFlinger::PlaybackThread::latency() const 1272{ 1273 if (mOutput) { 1274 return mOutput->stream->get_latency(mOutput->stream); 1275 } 1276 else { 1277 return 0; 1278 } 1279} 1280 1281status_t AudioFlinger::PlaybackThread::setMasterVolume(float value) 1282{ 1283 mMasterVolume = value; 1284 return NO_ERROR; 1285} 1286 1287status_t AudioFlinger::PlaybackThread::setMasterMute(bool muted) 1288{ 1289 mMasterMute = muted; 1290 return NO_ERROR; 1291} 1292 1293float AudioFlinger::PlaybackThread::masterVolume() const 1294{ 1295 return mMasterVolume; 1296} 1297 1298bool AudioFlinger::PlaybackThread::masterMute() const 1299{ 1300 return mMasterMute; 1301} 1302 1303status_t AudioFlinger::PlaybackThread::setStreamVolume(int stream, float value) 1304{ 1305 mStreamTypes[stream].volume = value; 1306 return NO_ERROR; 1307} 1308 1309status_t AudioFlinger::PlaybackThread::setStreamMute(int stream, bool muted) 1310{ 1311 mStreamTypes[stream].mute = muted; 1312 return NO_ERROR; 1313} 1314 1315float AudioFlinger::PlaybackThread::streamVolume(int stream) const 1316{ 1317 return mStreamTypes[stream].volume; 1318} 1319 1320bool AudioFlinger::PlaybackThread::streamMute(int stream) const 1321{ 1322 return mStreamTypes[stream].mute; 1323} 1324 1325// addTrack_l() must be called with ThreadBase::mLock held 1326status_t AudioFlinger::PlaybackThread::addTrack_l(const sp<Track>& track) 1327{ 1328 status_t status = ALREADY_EXISTS; 1329 1330 // set retry count for buffer fill 1331 track->mRetryCount = kMaxTrackStartupRetries; 1332 if (mActiveTracks.indexOf(track) < 0) { 1333 // the track is newly added, make sure it fills up all its 1334 // buffers before playing. This is to ensure the client will 1335 // effectively get the latency it requested. 1336 track->mFillingUpStatus = Track::FS_FILLING; 1337 track->mResetDone = false; 1338 mActiveTracks.add(track); 1339 if (track->mainBuffer() != mMixBuffer) { 1340 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1341 if (chain != 0) { 1342 LOGV("addTrack_l() starting track on chain %p for session %d", chain.get(), track->sessionId()); 1343 chain->startTrack(); 1344 } 1345 } 1346 1347 status = NO_ERROR; 1348 } 1349 1350 LOGV("mWaitWorkCV.broadcast"); 1351 mWaitWorkCV.broadcast(); 1352 1353 return status; 1354} 1355 1356// destroyTrack_l() must be called with ThreadBase::mLock held 1357void AudioFlinger::PlaybackThread::destroyTrack_l(const sp<Track>& track) 1358{ 1359 track->mState = TrackBase::TERMINATED; 1360 if (mActiveTracks.indexOf(track) < 0) { 1361 mTracks.remove(track); 1362 deleteTrackName_l(track->name()); 1363 } 1364} 1365 1366String8 AudioFlinger::PlaybackThread::getParameters(const String8& keys) 1367{ 1368 String8 out_s8; 1369 char *s; 1370 1371 s = mOutput->stream->common.get_parameters(&mOutput->stream->common, keys.string()); 1372 out_s8 = String8(s); 1373 free(s); 1374 return out_s8; 1375} 1376 1377// destroyTrack_l() must be called with AudioFlinger::mLock held 1378void AudioFlinger::PlaybackThread::audioConfigChanged_l(int event, int param) { 1379 AudioSystem::OutputDescriptor desc; 1380 void *param2 = 0; 1381 1382 LOGV("PlaybackThread::audioConfigChanged_l, thread %p, event %d, param %d", this, event, param); 1383 1384 switch (event) { 1385 case AudioSystem::OUTPUT_OPENED: 1386 case AudioSystem::OUTPUT_CONFIG_CHANGED: 1387 desc.channels = mChannels; 1388 desc.samplingRate = mSampleRate; 1389 desc.format = mFormat; 1390 desc.frameCount = mFrameCount; 1391 desc.latency = latency(); 1392 param2 = &desc; 1393 break; 1394 1395 case AudioSystem::STREAM_CONFIG_CHANGED: 1396 param2 = ¶m; 1397 case AudioSystem::OUTPUT_CLOSED: 1398 default: 1399 break; 1400 } 1401 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 1402} 1403 1404void AudioFlinger::PlaybackThread::readOutputParameters() 1405{ 1406 mSampleRate = mOutput->stream->common.get_sample_rate(&mOutput->stream->common); 1407 mChannels = mOutput->stream->common.get_channels(&mOutput->stream->common); 1408 mChannelCount = (uint16_t)popcount(mChannels); 1409 mFormat = mOutput->stream->common.get_format(&mOutput->stream->common); 1410 mFrameSize = (uint16_t)audio_stream_frame_size(&mOutput->stream->common); 1411 mFrameCount = mOutput->stream->common.get_buffer_size(&mOutput->stream->common) / mFrameSize; 1412 1413 // FIXME - Current mixer implementation only supports stereo output: Always 1414 // Allocate a stereo buffer even if HW output is mono. 1415 if (mMixBuffer != NULL) delete[] mMixBuffer; 1416 mMixBuffer = new int16_t[mFrameCount * 2]; 1417 memset(mMixBuffer, 0, mFrameCount * 2 * sizeof(int16_t)); 1418 1419 // force reconfiguration of effect chains and engines to take new buffer size and audio 1420 // parameters into account 1421 // Note that mLock is not held when readOutputParameters() is called from the constructor 1422 // but in this case nothing is done below as no audio sessions have effect yet so it doesn't 1423 // matter. 1424 // create a copy of mEffectChains as calling moveEffectChain_l() can reorder some effect chains 1425 Vector< sp<EffectChain> > effectChains = mEffectChains; 1426 for (size_t i = 0; i < effectChains.size(); i ++) { 1427 mAudioFlinger->moveEffectChain_l(effectChains[i]->sessionId(), this, this, false); 1428 } 1429} 1430 1431status_t AudioFlinger::PlaybackThread::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames) 1432{ 1433 if (halFrames == 0 || dspFrames == 0) { 1434 return BAD_VALUE; 1435 } 1436 if (mOutput == 0) { 1437 return INVALID_OPERATION; 1438 } 1439 *halFrames = mBytesWritten / audio_stream_frame_size(&mOutput->stream->common); 1440 1441 return mOutput->stream->get_render_position(mOutput->stream, dspFrames); 1442} 1443 1444uint32_t AudioFlinger::PlaybackThread::hasAudioSession(int sessionId) 1445{ 1446 Mutex::Autolock _l(mLock); 1447 uint32_t result = 0; 1448 if (getEffectChain_l(sessionId) != 0) { 1449 result = EFFECT_SESSION; 1450 } 1451 1452 for (size_t i = 0; i < mTracks.size(); ++i) { 1453 sp<Track> track = mTracks[i]; 1454 if (sessionId == track->sessionId() && 1455 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1456 result |= TRACK_SESSION; 1457 break; 1458 } 1459 } 1460 1461 return result; 1462} 1463 1464uint32_t AudioFlinger::PlaybackThread::getStrategyForSession_l(int sessionId) 1465{ 1466 // session AUDIO_SESSION_OUTPUT_MIX is placed in same strategy as MUSIC stream so that 1467 // it is moved to correct output by audio policy manager when A2DP is connected or disconnected 1468 if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 1469 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1470 } 1471 for (size_t i = 0; i < mTracks.size(); i++) { 1472 sp<Track> track = mTracks[i]; 1473 if (sessionId == track->sessionId() && 1474 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1475 return AudioSystem::getStrategyForStream((audio_stream_type_t) track->type()); 1476 } 1477 } 1478 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1479} 1480 1481sp<AudioFlinger::EffectChain> AudioFlinger::PlaybackThread::getEffectChain(int sessionId) 1482{ 1483 Mutex::Autolock _l(mLock); 1484 return getEffectChain_l(sessionId); 1485} 1486 1487sp<AudioFlinger::EffectChain> AudioFlinger::PlaybackThread::getEffectChain_l(int sessionId) 1488{ 1489 sp<EffectChain> chain; 1490 1491 size_t size = mEffectChains.size(); 1492 for (size_t i = 0; i < size; i++) { 1493 if (mEffectChains[i]->sessionId() == sessionId) { 1494 chain = mEffectChains[i]; 1495 break; 1496 } 1497 } 1498 return chain; 1499} 1500 1501void AudioFlinger::PlaybackThread::setMode(uint32_t mode) 1502{ 1503 Mutex::Autolock _l(mLock); 1504 size_t size = mEffectChains.size(); 1505 for (size_t i = 0; i < size; i++) { 1506 mEffectChains[i]->setMode_l(mode); 1507 } 1508} 1509 1510// ---------------------------------------------------------------------------- 1511 1512AudioFlinger::MixerThread::MixerThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 1513 : PlaybackThread(audioFlinger, output, id, device), 1514 mAudioMixer(0) 1515{ 1516 mType = PlaybackThread::MIXER; 1517 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 1518 1519 // FIXME - Current mixer implementation only supports stereo output 1520 if (mChannelCount == 1) { 1521 LOGE("Invalid audio hardware channel count"); 1522 } 1523} 1524 1525AudioFlinger::MixerThread::~MixerThread() 1526{ 1527 delete mAudioMixer; 1528} 1529 1530bool AudioFlinger::MixerThread::threadLoop() 1531{ 1532 Vector< sp<Track> > tracksToRemove; 1533 uint32_t mixerStatus = MIXER_IDLE; 1534 nsecs_t standbyTime = systemTime(); 1535 size_t mixBufferSize = mFrameCount * mFrameSize; 1536 // FIXME: Relaxed timing because of a certain device that can't meet latency 1537 // Should be reduced to 2x after the vendor fixes the driver issue 1538 nsecs_t maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1539 nsecs_t lastWarning = 0; 1540 bool longStandbyExit = false; 1541 uint32_t activeSleepTime = activeSleepTimeUs(); 1542 uint32_t idleSleepTime = idleSleepTimeUs(); 1543 uint32_t sleepTime = idleSleepTime; 1544 Vector< sp<EffectChain> > effectChains; 1545 1546 while (!exitPending()) 1547 { 1548 processConfigEvents(); 1549 1550 mixerStatus = MIXER_IDLE; 1551 { // scope for mLock 1552 1553 Mutex::Autolock _l(mLock); 1554 1555 if (checkForNewParameters_l()) { 1556 mixBufferSize = mFrameCount * mFrameSize; 1557 // FIXME: Relaxed timing because of a certain device that can't meet latency 1558 // Should be reduced to 2x after the vendor fixes the driver issue 1559 maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1560 activeSleepTime = activeSleepTimeUs(); 1561 idleSleepTime = idleSleepTimeUs(); 1562 } 1563 1564 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 1565 1566 // put audio hardware into standby after short delay 1567 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 1568 mSuspended) { 1569 if (!mStandby) { 1570 LOGV("Audio hardware entering standby, mixer %p, mSuspended %d\n", this, mSuspended); 1571 mOutput->stream->common.standby(&mOutput->stream->common); 1572 mStandby = true; 1573 mBytesWritten = 0; 1574 } 1575 1576 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 1577 // we're about to wait, flush the binder command buffer 1578 IPCThreadState::self()->flushCommands(); 1579 1580 if (exitPending()) break; 1581 1582 // wait until we have something to do... 1583 LOGV("MixerThread %p TID %d going to sleep\n", this, gettid()); 1584 mWaitWorkCV.wait(mLock); 1585 LOGV("MixerThread %p TID %d waking up\n", this, gettid()); 1586 1587 if (mMasterMute == false) { 1588 char value[PROPERTY_VALUE_MAX]; 1589 property_get("ro.audio.silent", value, "0"); 1590 if (atoi(value)) { 1591 LOGD("Silence is golden"); 1592 setMasterMute(true); 1593 } 1594 } 1595 1596 standbyTime = systemTime() + kStandbyTimeInNsecs; 1597 sleepTime = idleSleepTime; 1598 continue; 1599 } 1600 } 1601 1602 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 1603 1604 // prevent any changes in effect chain list and in each effect chain 1605 // during mixing and effect process as the audio buffers could be deleted 1606 // or modified if an effect is created or deleted 1607 lockEffectChains_l(effectChains); 1608 } 1609 1610 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 1611 // mix buffers... 1612 mAudioMixer->process(); 1613 sleepTime = 0; 1614 standbyTime = systemTime() + kStandbyTimeInNsecs; 1615 //TODO: delay standby when effects have a tail 1616 } else { 1617 // If no tracks are ready, sleep once for the duration of an output 1618 // buffer size, then write 0s to the output 1619 if (sleepTime == 0) { 1620 if (mixerStatus == MIXER_TRACKS_ENABLED) { 1621 sleepTime = activeSleepTime; 1622 } else { 1623 sleepTime = idleSleepTime; 1624 } 1625 } else if (mBytesWritten != 0 || 1626 (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)) { 1627 memset (mMixBuffer, 0, mixBufferSize); 1628 sleepTime = 0; 1629 LOGV_IF((mBytesWritten == 0 && (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)), "anticipated start"); 1630 } 1631 // TODO add standby time extension fct of effect tail 1632 } 1633 1634 if (mSuspended) { 1635 sleepTime = suspendSleepTimeUs(); 1636 } 1637 // sleepTime == 0 means we must write to audio hardware 1638 if (sleepTime == 0) { 1639 for (size_t i = 0; i < effectChains.size(); i ++) { 1640 effectChains[i]->process_l(); 1641 } 1642 // enable changes in effect chain 1643 unlockEffectChains(effectChains); 1644 mLastWriteTime = systemTime(); 1645 mInWrite = true; 1646 mBytesWritten += mixBufferSize; 1647 1648 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 1649 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 1650 mNumWrites++; 1651 mInWrite = false; 1652 nsecs_t now = systemTime(); 1653 nsecs_t delta = now - mLastWriteTime; 1654 if (delta > maxPeriod) { 1655 mNumDelayedWrites++; 1656 if ((now - lastWarning) > kWarningThrottle) { 1657 LOGW("write blocked for %llu msecs, %d delayed writes, thread %p", 1658 ns2ms(delta), mNumDelayedWrites, this); 1659 lastWarning = now; 1660 } 1661 if (mStandby) { 1662 longStandbyExit = true; 1663 } 1664 } 1665 mStandby = false; 1666 } else { 1667 // enable changes in effect chain 1668 unlockEffectChains(effectChains); 1669 usleep(sleepTime); 1670 } 1671 1672 // finally let go of all our tracks, without the lock held 1673 // since we can't guarantee the destructors won't acquire that 1674 // same lock. 1675 tracksToRemove.clear(); 1676 1677 // Effect chains will be actually deleted here if they were removed from 1678 // mEffectChains list during mixing or effects processing 1679 effectChains.clear(); 1680 } 1681 1682 if (!mStandby) { 1683 mOutput->stream->common.standby(&mOutput->stream->common); 1684 } 1685 1686 LOGV("MixerThread %p exiting", this); 1687 return false; 1688} 1689 1690// prepareTracks_l() must be called with ThreadBase::mLock held 1691uint32_t AudioFlinger::MixerThread::prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, Vector< sp<Track> > *tracksToRemove) 1692{ 1693 1694 uint32_t mixerStatus = MIXER_IDLE; 1695 // find out which tracks need to be processed 1696 size_t count = activeTracks.size(); 1697 size_t mixedTracks = 0; 1698 size_t tracksWithEffect = 0; 1699 1700 float masterVolume = mMasterVolume; 1701 bool masterMute = mMasterMute; 1702 1703 if (masterMute) { 1704 masterVolume = 0; 1705 } 1706 // Delegate master volume control to effect in output mix effect chain if needed 1707 sp<EffectChain> chain = getEffectChain_l(AUDIO_SESSION_OUTPUT_MIX); 1708 if (chain != 0) { 1709 uint32_t v = (uint32_t)(masterVolume * (1 << 24)); 1710 chain->setVolume_l(&v, &v); 1711 masterVolume = (float)((v + (1 << 23)) >> 24); 1712 chain.clear(); 1713 } 1714 1715 for (size_t i=0 ; i<count ; i++) { 1716 sp<Track> t = activeTracks[i].promote(); 1717 if (t == 0) continue; 1718 1719 Track* const track = t.get(); 1720 audio_track_cblk_t* cblk = track->cblk(); 1721 1722 // The first time a track is added we wait 1723 // for all its buffers to be filled before processing it 1724 mAudioMixer->setActiveTrack(track->name()); 1725 if (cblk->framesReady() && track->isReady() && 1726 !track->isPaused() && !track->isTerminated()) 1727 { 1728 //LOGV("track %d u=%08x, s=%08x [OK] on thread %p", track->name(), cblk->user, cblk->server, this); 1729 1730 mixedTracks++; 1731 1732 // track->mainBuffer() != mMixBuffer means there is an effect chain 1733 // connected to the track 1734 chain.clear(); 1735 if (track->mainBuffer() != mMixBuffer) { 1736 chain = getEffectChain_l(track->sessionId()); 1737 // Delegate volume control to effect in track effect chain if needed 1738 if (chain != 0) { 1739 tracksWithEffect++; 1740 } else { 1741 LOGW("prepareTracks_l(): track %08x attached to effect but no chain found on session %d", 1742 track->name(), track->sessionId()); 1743 } 1744 } 1745 1746 1747 int param = AudioMixer::VOLUME; 1748 if (track->mFillingUpStatus == Track::FS_FILLED) { 1749 // no ramp for the first volume setting 1750 track->mFillingUpStatus = Track::FS_ACTIVE; 1751 if (track->mState == TrackBase::RESUMING) { 1752 track->mState = TrackBase::ACTIVE; 1753 param = AudioMixer::RAMP_VOLUME; 1754 } 1755 mAudioMixer->setParameter(AudioMixer::RESAMPLE, AudioMixer::RESET, NULL); 1756 } else if (cblk->server != 0) { 1757 // If the track is stopped before the first frame was mixed, 1758 // do not apply ramp 1759 param = AudioMixer::RAMP_VOLUME; 1760 } 1761 1762 // compute volume for this track 1763 uint32_t vl, vr, va; 1764 if (track->isMuted() || track->isPausing() || 1765 mStreamTypes[track->type()].mute) { 1766 vl = vr = va = 0; 1767 if (track->isPausing()) { 1768 track->setPaused(); 1769 } 1770 } else { 1771 1772 // read original volumes with volume control 1773 float typeVolume = mStreamTypes[track->type()].volume; 1774 float v = masterVolume * typeVolume; 1775 vl = (uint32_t)(v * cblk->volume[0]) << 12; 1776 vr = (uint32_t)(v * cblk->volume[1]) << 12; 1777 1778 va = (uint32_t)(v * cblk->sendLevel); 1779 } 1780 // Delegate volume control to effect in track effect chain if needed 1781 if (chain != 0 && chain->setVolume_l(&vl, &vr)) { 1782 // Do not ramp volume if volume is controlled by effect 1783 param = AudioMixer::VOLUME; 1784 track->mHasVolumeController = true; 1785 } else { 1786 // force no volume ramp when volume controller was just disabled or removed 1787 // from effect chain to avoid volume spike 1788 if (track->mHasVolumeController) { 1789 param = AudioMixer::VOLUME; 1790 } 1791 track->mHasVolumeController = false; 1792 } 1793 1794 // Convert volumes from 8.24 to 4.12 format 1795 int16_t left, right, aux; 1796 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 1797 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 1798 left = int16_t(v_clamped); 1799 v_clamped = (vr + (1 << 11)) >> 12; 1800 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 1801 right = int16_t(v_clamped); 1802 1803 if (va > MAX_GAIN_INT) va = MAX_GAIN_INT; 1804 aux = int16_t(va); 1805 1806 // XXX: these things DON'T need to be done each time 1807 mAudioMixer->setBufferProvider(track); 1808 mAudioMixer->enable(AudioMixer::MIXING); 1809 1810 mAudioMixer->setParameter(param, AudioMixer::VOLUME0, (void *)left); 1811 mAudioMixer->setParameter(param, AudioMixer::VOLUME1, (void *)right); 1812 mAudioMixer->setParameter(param, AudioMixer::AUXLEVEL, (void *)aux); 1813 mAudioMixer->setParameter( 1814 AudioMixer::TRACK, 1815 AudioMixer::FORMAT, (void *)track->format()); 1816 mAudioMixer->setParameter( 1817 AudioMixer::TRACK, 1818 AudioMixer::CHANNEL_COUNT, (void *)track->channelCount()); 1819 mAudioMixer->setParameter( 1820 AudioMixer::RESAMPLE, 1821 AudioMixer::SAMPLE_RATE, 1822 (void *)(cblk->sampleRate)); 1823 mAudioMixer->setParameter( 1824 AudioMixer::TRACK, 1825 AudioMixer::MAIN_BUFFER, (void *)track->mainBuffer()); 1826 mAudioMixer->setParameter( 1827 AudioMixer::TRACK, 1828 AudioMixer::AUX_BUFFER, (void *)track->auxBuffer()); 1829 1830 // reset retry count 1831 track->mRetryCount = kMaxTrackRetries; 1832 mixerStatus = MIXER_TRACKS_READY; 1833 } else { 1834 //LOGV("track %d u=%08x, s=%08x [NOT READY] on thread %p", track->name(), cblk->user, cblk->server, this); 1835 if (track->isStopped()) { 1836 track->reset(); 1837 } 1838 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 1839 // We have consumed all the buffers of this track. 1840 // Remove it from the list of active tracks. 1841 tracksToRemove->add(track); 1842 } else { 1843 // No buffers for this track. Give it a few chances to 1844 // fill a buffer, then remove it from active list. 1845 if (--(track->mRetryCount) <= 0) { 1846 LOGV("BUFFER TIMEOUT: remove(%d) from active list on thread %p", track->name(), this); 1847 tracksToRemove->add(track); 1848 // indicate to client process that the track was disabled because of underrun 1849 android_atomic_or(CBLK_DISABLED_ON, &cblk->flags); 1850 } else if (mixerStatus != MIXER_TRACKS_READY) { 1851 mixerStatus = MIXER_TRACKS_ENABLED; 1852 } 1853 } 1854 mAudioMixer->disable(AudioMixer::MIXING); 1855 } 1856 } 1857 1858 // remove all the tracks that need to be... 1859 count = tracksToRemove->size(); 1860 if (UNLIKELY(count)) { 1861 for (size_t i=0 ; i<count ; i++) { 1862 const sp<Track>& track = tracksToRemove->itemAt(i); 1863 mActiveTracks.remove(track); 1864 if (track->mainBuffer() != mMixBuffer) { 1865 chain = getEffectChain_l(track->sessionId()); 1866 if (chain != 0) { 1867 LOGV("stopping track on chain %p for session Id: %d", chain.get(), track->sessionId()); 1868 chain->stopTrack(); 1869 } 1870 } 1871 if (track->isTerminated()) { 1872 mTracks.remove(track); 1873 deleteTrackName_l(track->mName); 1874 } 1875 } 1876 } 1877 1878 // mix buffer must be cleared if all tracks are connected to an 1879 // effect chain as in this case the mixer will not write to 1880 // mix buffer and track effects will accumulate into it 1881 if (mixedTracks != 0 && mixedTracks == tracksWithEffect) { 1882 memset(mMixBuffer, 0, mFrameCount * mChannelCount * sizeof(int16_t)); 1883 } 1884 1885 return mixerStatus; 1886} 1887 1888void AudioFlinger::MixerThread::invalidateTracks(int streamType) 1889{ 1890 LOGV ("MixerThread::invalidateTracks() mixer %p, streamType %d, mTracks.size %d", 1891 this, streamType, mTracks.size()); 1892 Mutex::Autolock _l(mLock); 1893 1894 size_t size = mTracks.size(); 1895 for (size_t i = 0; i < size; i++) { 1896 sp<Track> t = mTracks[i]; 1897 if (t->type() == streamType) { 1898 android_atomic_or(CBLK_INVALID_ON, &t->mCblk->flags); 1899 t->mCblk->cv.signal(); 1900 } 1901 } 1902} 1903 1904 1905// getTrackName_l() must be called with ThreadBase::mLock held 1906int AudioFlinger::MixerThread::getTrackName_l() 1907{ 1908 return mAudioMixer->getTrackName(); 1909} 1910 1911// deleteTrackName_l() must be called with ThreadBase::mLock held 1912void AudioFlinger::MixerThread::deleteTrackName_l(int name) 1913{ 1914 LOGV("remove track (%d) and delete from mixer", name); 1915 mAudioMixer->deleteTrackName(name); 1916} 1917 1918// checkForNewParameters_l() must be called with ThreadBase::mLock held 1919bool AudioFlinger::MixerThread::checkForNewParameters_l() 1920{ 1921 bool reconfig = false; 1922 1923 while (!mNewParameters.isEmpty()) { 1924 status_t status = NO_ERROR; 1925 String8 keyValuePair = mNewParameters[0]; 1926 AudioParameter param = AudioParameter(keyValuePair); 1927 int value; 1928 1929 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 1930 reconfig = true; 1931 } 1932 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 1933 if (value != AUDIO_FORMAT_PCM_16_BIT) { 1934 status = BAD_VALUE; 1935 } else { 1936 reconfig = true; 1937 } 1938 } 1939 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 1940 if (value != AUDIO_CHANNEL_OUT_STEREO) { 1941 status = BAD_VALUE; 1942 } else { 1943 reconfig = true; 1944 } 1945 } 1946 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 1947 // do not accept frame count changes if tracks are open as the track buffer 1948 // size depends on frame count and correct behavior would not be garantied 1949 // if frame count is changed after track creation 1950 if (!mTracks.isEmpty()) { 1951 status = INVALID_OPERATION; 1952 } else { 1953 reconfig = true; 1954 } 1955 } 1956 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 1957 // when changing the audio output device, call addBatteryData to notify 1958 // the change 1959 if (mDevice != value) { 1960 uint32_t params = 0; 1961 // check whether speaker is on 1962 if (value & AUDIO_DEVICE_OUT_SPEAKER) { 1963 params |= IMediaPlayerService::kBatteryDataSpeakerOn; 1964 } 1965 1966 int deviceWithoutSpeaker 1967 = AUDIO_DEVICE_OUT_ALL & ~AUDIO_DEVICE_OUT_SPEAKER; 1968 // check if any other device (except speaker) is on 1969 if (value & deviceWithoutSpeaker ) { 1970 params |= IMediaPlayerService::kBatteryDataOtherAudioDeviceOn; 1971 } 1972 1973 if (params != 0) { 1974 addBatteryData(params); 1975 } 1976 } 1977 1978 // forward device change to effects that have requested to be 1979 // aware of attached audio device. 1980 mDevice = (uint32_t)value; 1981 for (size_t i = 0; i < mEffectChains.size(); i++) { 1982 mEffectChains[i]->setDevice_l(mDevice); 1983 } 1984 } 1985 1986 if (status == NO_ERROR) { 1987 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 1988 keyValuePair.string()); 1989 if (!mStandby && status == INVALID_OPERATION) { 1990 mOutput->stream->common.standby(&mOutput->stream->common); 1991 mStandby = true; 1992 mBytesWritten = 0; 1993 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 1994 keyValuePair.string()); 1995 } 1996 if (status == NO_ERROR && reconfig) { 1997 delete mAudioMixer; 1998 readOutputParameters(); 1999 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 2000 for (size_t i = 0; i < mTracks.size() ; i++) { 2001 int name = getTrackName_l(); 2002 if (name < 0) break; 2003 mTracks[i]->mName = name; 2004 // limit track sample rate to 2 x new output sample rate 2005 if (mTracks[i]->mCblk->sampleRate > 2 * sampleRate()) { 2006 mTracks[i]->mCblk->sampleRate = 2 * sampleRate(); 2007 } 2008 } 2009 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2010 } 2011 } 2012 2013 mNewParameters.removeAt(0); 2014 2015 mParamStatus = status; 2016 mParamCond.signal(); 2017 mWaitWorkCV.wait(mLock); 2018 } 2019 return reconfig; 2020} 2021 2022status_t AudioFlinger::MixerThread::dumpInternals(int fd, const Vector<String16>& args) 2023{ 2024 const size_t SIZE = 256; 2025 char buffer[SIZE]; 2026 String8 result; 2027 2028 PlaybackThread::dumpInternals(fd, args); 2029 2030 snprintf(buffer, SIZE, "AudioMixer tracks: %08x\n", mAudioMixer->trackNames()); 2031 result.append(buffer); 2032 write(fd, result.string(), result.size()); 2033 return NO_ERROR; 2034} 2035 2036uint32_t AudioFlinger::MixerThread::activeSleepTimeUs() 2037{ 2038 return (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2039} 2040 2041uint32_t AudioFlinger::MixerThread::idleSleepTimeUs() 2042{ 2043 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2044} 2045 2046uint32_t AudioFlinger::MixerThread::suspendSleepTimeUs() 2047{ 2048 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2049} 2050 2051// ---------------------------------------------------------------------------- 2052AudioFlinger::DirectOutputThread::DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 2053 : PlaybackThread(audioFlinger, output, id, device) 2054{ 2055 mType = PlaybackThread::DIRECT; 2056} 2057 2058AudioFlinger::DirectOutputThread::~DirectOutputThread() 2059{ 2060} 2061 2062 2063static inline int16_t clamp16(int32_t sample) 2064{ 2065 if ((sample>>15) ^ (sample>>31)) 2066 sample = 0x7FFF ^ (sample>>31); 2067 return sample; 2068} 2069 2070static inline 2071int32_t mul(int16_t in, int16_t v) 2072{ 2073#if defined(__arm__) && !defined(__thumb__) 2074 int32_t out; 2075 asm( "smulbb %[out], %[in], %[v] \n" 2076 : [out]"=r"(out) 2077 : [in]"%r"(in), [v]"r"(v) 2078 : ); 2079 return out; 2080#else 2081 return in * int32_t(v); 2082#endif 2083} 2084 2085void AudioFlinger::DirectOutputThread::applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp) 2086{ 2087 // Do not apply volume on compressed audio 2088 if (!audio_is_linear_pcm(mFormat)) { 2089 return; 2090 } 2091 2092 // convert to signed 16 bit before volume calculation 2093 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2094 size_t count = mFrameCount * mChannelCount; 2095 uint8_t *src = (uint8_t *)mMixBuffer + count-1; 2096 int16_t *dst = mMixBuffer + count-1; 2097 while(count--) { 2098 *dst-- = (int16_t)(*src--^0x80) << 8; 2099 } 2100 } 2101 2102 size_t frameCount = mFrameCount; 2103 int16_t *out = mMixBuffer; 2104 if (ramp) { 2105 if (mChannelCount == 1) { 2106 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2107 int32_t vlInc = d / (int32_t)frameCount; 2108 int32_t vl = ((int32_t)mLeftVolShort << 16); 2109 do { 2110 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2111 out++; 2112 vl += vlInc; 2113 } while (--frameCount); 2114 2115 } else { 2116 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2117 int32_t vlInc = d / (int32_t)frameCount; 2118 d = ((int32_t)rightVol - (int32_t)mRightVolShort) << 16; 2119 int32_t vrInc = d / (int32_t)frameCount; 2120 int32_t vl = ((int32_t)mLeftVolShort << 16); 2121 int32_t vr = ((int32_t)mRightVolShort << 16); 2122 do { 2123 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2124 out[1] = clamp16(mul(out[1], vr >> 16) >> 12); 2125 out += 2; 2126 vl += vlInc; 2127 vr += vrInc; 2128 } while (--frameCount); 2129 } 2130 } else { 2131 if (mChannelCount == 1) { 2132 do { 2133 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2134 out++; 2135 } while (--frameCount); 2136 } else { 2137 do { 2138 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2139 out[1] = clamp16(mul(out[1], rightVol) >> 12); 2140 out += 2; 2141 } while (--frameCount); 2142 } 2143 } 2144 2145 // convert back to unsigned 8 bit after volume calculation 2146 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2147 size_t count = mFrameCount * mChannelCount; 2148 int16_t *src = mMixBuffer; 2149 uint8_t *dst = (uint8_t *)mMixBuffer; 2150 while(count--) { 2151 *dst++ = (uint8_t)(((int32_t)*src++ + (1<<7)) >> 8)^0x80; 2152 } 2153 } 2154 2155 mLeftVolShort = leftVol; 2156 mRightVolShort = rightVol; 2157} 2158 2159bool AudioFlinger::DirectOutputThread::threadLoop() 2160{ 2161 uint32_t mixerStatus = MIXER_IDLE; 2162 sp<Track> trackToRemove; 2163 sp<Track> activeTrack; 2164 nsecs_t standbyTime = systemTime(); 2165 int8_t *curBuf; 2166 size_t mixBufferSize = mFrameCount*mFrameSize; 2167 uint32_t activeSleepTime = activeSleepTimeUs(); 2168 uint32_t idleSleepTime = idleSleepTimeUs(); 2169 uint32_t sleepTime = idleSleepTime; 2170 // use shorter standby delay as on normal output to release 2171 // hardware resources as soon as possible 2172 nsecs_t standbyDelay = microseconds(activeSleepTime*2); 2173 2174 while (!exitPending()) 2175 { 2176 bool rampVolume; 2177 uint16_t leftVol; 2178 uint16_t rightVol; 2179 Vector< sp<EffectChain> > effectChains; 2180 2181 processConfigEvents(); 2182 2183 mixerStatus = MIXER_IDLE; 2184 2185 { // scope for the mLock 2186 2187 Mutex::Autolock _l(mLock); 2188 2189 if (checkForNewParameters_l()) { 2190 mixBufferSize = mFrameCount*mFrameSize; 2191 activeSleepTime = activeSleepTimeUs(); 2192 idleSleepTime = idleSleepTimeUs(); 2193 standbyDelay = microseconds(activeSleepTime*2); 2194 } 2195 2196 // put audio hardware into standby after short delay 2197 if UNLIKELY((!mActiveTracks.size() && systemTime() > standbyTime) || 2198 mSuspended) { 2199 // wait until we have something to do... 2200 if (!mStandby) { 2201 LOGV("Audio hardware entering standby, mixer %p\n", this); 2202 mOutput->stream->common.standby(&mOutput->stream->common); 2203 mStandby = true; 2204 mBytesWritten = 0; 2205 } 2206 2207 if (!mActiveTracks.size() && mConfigEvents.isEmpty()) { 2208 // we're about to wait, flush the binder command buffer 2209 IPCThreadState::self()->flushCommands(); 2210 2211 if (exitPending()) break; 2212 2213 LOGV("DirectOutputThread %p TID %d going to sleep\n", this, gettid()); 2214 mWaitWorkCV.wait(mLock); 2215 LOGV("DirectOutputThread %p TID %d waking up in active mode\n", this, gettid()); 2216 2217 if (mMasterMute == false) { 2218 char value[PROPERTY_VALUE_MAX]; 2219 property_get("ro.audio.silent", value, "0"); 2220 if (atoi(value)) { 2221 LOGD("Silence is golden"); 2222 setMasterMute(true); 2223 } 2224 } 2225 2226 standbyTime = systemTime() + standbyDelay; 2227 sleepTime = idleSleepTime; 2228 continue; 2229 } 2230 } 2231 2232 effectChains = mEffectChains; 2233 2234 // find out which tracks need to be processed 2235 if (mActiveTracks.size() != 0) { 2236 sp<Track> t = mActiveTracks[0].promote(); 2237 if (t == 0) continue; 2238 2239 Track* const track = t.get(); 2240 audio_track_cblk_t* cblk = track->cblk(); 2241 2242 // The first time a track is added we wait 2243 // for all its buffers to be filled before processing it 2244 if (cblk->framesReady() && track->isReady() && 2245 !track->isPaused() && !track->isTerminated()) 2246 { 2247 //LOGV("track %d u=%08x, s=%08x [OK]", track->name(), cblk->user, cblk->server); 2248 2249 if (track->mFillingUpStatus == Track::FS_FILLED) { 2250 track->mFillingUpStatus = Track::FS_ACTIVE; 2251 mLeftVolFloat = mRightVolFloat = 0; 2252 mLeftVolShort = mRightVolShort = 0; 2253 if (track->mState == TrackBase::RESUMING) { 2254 track->mState = TrackBase::ACTIVE; 2255 rampVolume = true; 2256 } 2257 } else if (cblk->server != 0) { 2258 // If the track is stopped before the first frame was mixed, 2259 // do not apply ramp 2260 rampVolume = true; 2261 } 2262 // compute volume for this track 2263 float left, right; 2264 if (track->isMuted() || mMasterMute || track->isPausing() || 2265 mStreamTypes[track->type()].mute) { 2266 left = right = 0; 2267 if (track->isPausing()) { 2268 track->setPaused(); 2269 } 2270 } else { 2271 float typeVolume = mStreamTypes[track->type()].volume; 2272 float v = mMasterVolume * typeVolume; 2273 float v_clamped = v * cblk->volume[0]; 2274 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2275 left = v_clamped/MAX_GAIN; 2276 v_clamped = v * cblk->volume[1]; 2277 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2278 right = v_clamped/MAX_GAIN; 2279 } 2280 2281 if (left != mLeftVolFloat || right != mRightVolFloat) { 2282 mLeftVolFloat = left; 2283 mRightVolFloat = right; 2284 2285 // If audio HAL implements volume control, 2286 // force software volume to nominal value 2287 if (mOutput->stream->set_volume(mOutput->stream, left, right) == NO_ERROR) { 2288 left = 1.0f; 2289 right = 1.0f; 2290 } 2291 2292 // Convert volumes from float to 8.24 2293 uint32_t vl = (uint32_t)(left * (1 << 24)); 2294 uint32_t vr = (uint32_t)(right * (1 << 24)); 2295 2296 // Delegate volume control to effect in track effect chain if needed 2297 // only one effect chain can be present on DirectOutputThread, so if 2298 // there is one, the track is connected to it 2299 if (!effectChains.isEmpty()) { 2300 // Do not ramp volume if volume is controlled by effect 2301 if(effectChains[0]->setVolume_l(&vl, &vr)) { 2302 rampVolume = false; 2303 } 2304 } 2305 2306 // Convert volumes from 8.24 to 4.12 format 2307 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 2308 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2309 leftVol = (uint16_t)v_clamped; 2310 v_clamped = (vr + (1 << 11)) >> 12; 2311 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2312 rightVol = (uint16_t)v_clamped; 2313 } else { 2314 leftVol = mLeftVolShort; 2315 rightVol = mRightVolShort; 2316 rampVolume = false; 2317 } 2318 2319 // reset retry count 2320 track->mRetryCount = kMaxTrackRetriesDirect; 2321 activeTrack = t; 2322 mixerStatus = MIXER_TRACKS_READY; 2323 } else { 2324 //LOGV("track %d u=%08x, s=%08x [NOT READY]", track->name(), cblk->user, cblk->server); 2325 if (track->isStopped()) { 2326 track->reset(); 2327 } 2328 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 2329 // We have consumed all the buffers of this track. 2330 // Remove it from the list of active tracks. 2331 trackToRemove = track; 2332 } else { 2333 // No buffers for this track. Give it a few chances to 2334 // fill a buffer, then remove it from active list. 2335 if (--(track->mRetryCount) <= 0) { 2336 LOGV("BUFFER TIMEOUT: remove(%d) from active list", track->name()); 2337 trackToRemove = track; 2338 } else { 2339 mixerStatus = MIXER_TRACKS_ENABLED; 2340 } 2341 } 2342 } 2343 } 2344 2345 // remove all the tracks that need to be... 2346 if (UNLIKELY(trackToRemove != 0)) { 2347 mActiveTracks.remove(trackToRemove); 2348 if (!effectChains.isEmpty()) { 2349 LOGV("stopping track on chain %p for session Id: %d", effectChains[0].get(), 2350 trackToRemove->sessionId()); 2351 effectChains[0]->stopTrack(); 2352 } 2353 if (trackToRemove->isTerminated()) { 2354 mTracks.remove(trackToRemove); 2355 deleteTrackName_l(trackToRemove->mName); 2356 } 2357 } 2358 2359 lockEffectChains_l(effectChains); 2360 } 2361 2362 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2363 AudioBufferProvider::Buffer buffer; 2364 size_t frameCount = mFrameCount; 2365 curBuf = (int8_t *)mMixBuffer; 2366 // output audio to hardware 2367 while (frameCount) { 2368 buffer.frameCount = frameCount; 2369 activeTrack->getNextBuffer(&buffer); 2370 if (UNLIKELY(buffer.raw == 0)) { 2371 memset(curBuf, 0, frameCount * mFrameSize); 2372 break; 2373 } 2374 memcpy(curBuf, buffer.raw, buffer.frameCount * mFrameSize); 2375 frameCount -= buffer.frameCount; 2376 curBuf += buffer.frameCount * mFrameSize; 2377 activeTrack->releaseBuffer(&buffer); 2378 } 2379 sleepTime = 0; 2380 standbyTime = systemTime() + standbyDelay; 2381 } else { 2382 if (sleepTime == 0) { 2383 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2384 sleepTime = activeSleepTime; 2385 } else { 2386 sleepTime = idleSleepTime; 2387 } 2388 } else if (mBytesWritten != 0 && audio_is_linear_pcm(mFormat)) { 2389 memset (mMixBuffer, 0, mFrameCount * mFrameSize); 2390 sleepTime = 0; 2391 } 2392 } 2393 2394 if (mSuspended) { 2395 sleepTime = suspendSleepTimeUs(); 2396 } 2397 // sleepTime == 0 means we must write to audio hardware 2398 if (sleepTime == 0) { 2399 if (mixerStatus == MIXER_TRACKS_READY) { 2400 applyVolume(leftVol, rightVol, rampVolume); 2401 } 2402 for (size_t i = 0; i < effectChains.size(); i ++) { 2403 effectChains[i]->process_l(); 2404 } 2405 unlockEffectChains(effectChains); 2406 2407 mLastWriteTime = systemTime(); 2408 mInWrite = true; 2409 mBytesWritten += mixBufferSize; 2410 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 2411 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 2412 mNumWrites++; 2413 mInWrite = false; 2414 mStandby = false; 2415 } else { 2416 unlockEffectChains(effectChains); 2417 usleep(sleepTime); 2418 } 2419 2420 // finally let go of removed track, without the lock held 2421 // since we can't guarantee the destructors won't acquire that 2422 // same lock. 2423 trackToRemove.clear(); 2424 activeTrack.clear(); 2425 2426 // Effect chains will be actually deleted here if they were removed from 2427 // mEffectChains list during mixing or effects processing 2428 effectChains.clear(); 2429 } 2430 2431 if (!mStandby) { 2432 mOutput->stream->common.standby(&mOutput->stream->common); 2433 } 2434 2435 LOGV("DirectOutputThread %p exiting", this); 2436 return false; 2437} 2438 2439// getTrackName_l() must be called with ThreadBase::mLock held 2440int AudioFlinger::DirectOutputThread::getTrackName_l() 2441{ 2442 return 0; 2443} 2444 2445// deleteTrackName_l() must be called with ThreadBase::mLock held 2446void AudioFlinger::DirectOutputThread::deleteTrackName_l(int name) 2447{ 2448} 2449 2450// checkForNewParameters_l() must be called with ThreadBase::mLock held 2451bool AudioFlinger::DirectOutputThread::checkForNewParameters_l() 2452{ 2453 bool reconfig = false; 2454 2455 while (!mNewParameters.isEmpty()) { 2456 status_t status = NO_ERROR; 2457 String8 keyValuePair = mNewParameters[0]; 2458 AudioParameter param = AudioParameter(keyValuePair); 2459 int value; 2460 2461 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 2462 // do not accept frame count changes if tracks are open as the track buffer 2463 // size depends on frame count and correct behavior would not be garantied 2464 // if frame count is changed after track creation 2465 if (!mTracks.isEmpty()) { 2466 status = INVALID_OPERATION; 2467 } else { 2468 reconfig = true; 2469 } 2470 } 2471 if (status == NO_ERROR) { 2472 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2473 keyValuePair.string()); 2474 if (!mStandby && status == INVALID_OPERATION) { 2475 mOutput->stream->common.standby(&mOutput->stream->common); 2476 mStandby = true; 2477 mBytesWritten = 0; 2478 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2479 keyValuePair.string()); 2480 } 2481 if (status == NO_ERROR && reconfig) { 2482 readOutputParameters(); 2483 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2484 } 2485 } 2486 2487 mNewParameters.removeAt(0); 2488 2489 mParamStatus = status; 2490 mParamCond.signal(); 2491 mWaitWorkCV.wait(mLock); 2492 } 2493 return reconfig; 2494} 2495 2496uint32_t AudioFlinger::DirectOutputThread::activeSleepTimeUs() 2497{ 2498 uint32_t time; 2499 if (audio_is_linear_pcm(mFormat)) { 2500 time = (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2501 } else { 2502 time = 10000; 2503 } 2504 return time; 2505} 2506 2507uint32_t AudioFlinger::DirectOutputThread::idleSleepTimeUs() 2508{ 2509 uint32_t time; 2510 if (audio_is_linear_pcm(mFormat)) { 2511 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2512 } else { 2513 time = 10000; 2514 } 2515 return time; 2516} 2517 2518uint32_t AudioFlinger::DirectOutputThread::suspendSleepTimeUs() 2519{ 2520 uint32_t time; 2521 if (audio_is_linear_pcm(mFormat)) { 2522 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2523 } else { 2524 time = 10000; 2525 } 2526 return time; 2527} 2528 2529 2530// ---------------------------------------------------------------------------- 2531 2532AudioFlinger::DuplicatingThread::DuplicatingThread(const sp<AudioFlinger>& audioFlinger, AudioFlinger::MixerThread* mainThread, int id) 2533 : MixerThread(audioFlinger, mainThread->getOutput(), id, mainThread->device()), mWaitTimeMs(UINT_MAX) 2534{ 2535 mType = PlaybackThread::DUPLICATING; 2536 addOutputTrack(mainThread); 2537} 2538 2539AudioFlinger::DuplicatingThread::~DuplicatingThread() 2540{ 2541 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2542 mOutputTracks[i]->destroy(); 2543 } 2544 mOutputTracks.clear(); 2545} 2546 2547bool AudioFlinger::DuplicatingThread::threadLoop() 2548{ 2549 Vector< sp<Track> > tracksToRemove; 2550 uint32_t mixerStatus = MIXER_IDLE; 2551 nsecs_t standbyTime = systemTime(); 2552 size_t mixBufferSize = mFrameCount*mFrameSize; 2553 SortedVector< sp<OutputTrack> > outputTracks; 2554 uint32_t writeFrames = 0; 2555 uint32_t activeSleepTime = activeSleepTimeUs(); 2556 uint32_t idleSleepTime = idleSleepTimeUs(); 2557 uint32_t sleepTime = idleSleepTime; 2558 Vector< sp<EffectChain> > effectChains; 2559 2560 while (!exitPending()) 2561 { 2562 processConfigEvents(); 2563 2564 mixerStatus = MIXER_IDLE; 2565 { // scope for the mLock 2566 2567 Mutex::Autolock _l(mLock); 2568 2569 if (checkForNewParameters_l()) { 2570 mixBufferSize = mFrameCount*mFrameSize; 2571 updateWaitTime(); 2572 activeSleepTime = activeSleepTimeUs(); 2573 idleSleepTime = idleSleepTimeUs(); 2574 } 2575 2576 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 2577 2578 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2579 outputTracks.add(mOutputTracks[i]); 2580 } 2581 2582 // put audio hardware into standby after short delay 2583 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 2584 mSuspended) { 2585 if (!mStandby) { 2586 for (size_t i = 0; i < outputTracks.size(); i++) { 2587 outputTracks[i]->stop(); 2588 } 2589 mStandby = true; 2590 mBytesWritten = 0; 2591 } 2592 2593 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 2594 // we're about to wait, flush the binder command buffer 2595 IPCThreadState::self()->flushCommands(); 2596 outputTracks.clear(); 2597 2598 if (exitPending()) break; 2599 2600 LOGV("DuplicatingThread %p TID %d going to sleep\n", this, gettid()); 2601 mWaitWorkCV.wait(mLock); 2602 LOGV("DuplicatingThread %p TID %d waking up\n", this, gettid()); 2603 if (mMasterMute == false) { 2604 char value[PROPERTY_VALUE_MAX]; 2605 property_get("ro.audio.silent", value, "0"); 2606 if (atoi(value)) { 2607 LOGD("Silence is golden"); 2608 setMasterMute(true); 2609 } 2610 } 2611 2612 standbyTime = systemTime() + kStandbyTimeInNsecs; 2613 sleepTime = idleSleepTime; 2614 continue; 2615 } 2616 } 2617 2618 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 2619 2620 // prevent any changes in effect chain list and in each effect chain 2621 // during mixing and effect process as the audio buffers could be deleted 2622 // or modified if an effect is created or deleted 2623 lockEffectChains_l(effectChains); 2624 } 2625 2626 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2627 // mix buffers... 2628 if (outputsReady(outputTracks)) { 2629 mAudioMixer->process(); 2630 } else { 2631 memset(mMixBuffer, 0, mixBufferSize); 2632 } 2633 sleepTime = 0; 2634 writeFrames = mFrameCount; 2635 } else { 2636 if (sleepTime == 0) { 2637 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2638 sleepTime = activeSleepTime; 2639 } else { 2640 sleepTime = idleSleepTime; 2641 } 2642 } else if (mBytesWritten != 0) { 2643 // flush remaining overflow buffers in output tracks 2644 for (size_t i = 0; i < outputTracks.size(); i++) { 2645 if (outputTracks[i]->isActive()) { 2646 sleepTime = 0; 2647 writeFrames = 0; 2648 memset(mMixBuffer, 0, mixBufferSize); 2649 break; 2650 } 2651 } 2652 } 2653 } 2654 2655 if (mSuspended) { 2656 sleepTime = suspendSleepTimeUs(); 2657 } 2658 // sleepTime == 0 means we must write to audio hardware 2659 if (sleepTime == 0) { 2660 for (size_t i = 0; i < effectChains.size(); i ++) { 2661 effectChains[i]->process_l(); 2662 } 2663 // enable changes in effect chain 2664 unlockEffectChains(effectChains); 2665 2666 standbyTime = systemTime() + kStandbyTimeInNsecs; 2667 for (size_t i = 0; i < outputTracks.size(); i++) { 2668 outputTracks[i]->write(mMixBuffer, writeFrames); 2669 } 2670 mStandby = false; 2671 mBytesWritten += mixBufferSize; 2672 } else { 2673 // enable changes in effect chain 2674 unlockEffectChains(effectChains); 2675 usleep(sleepTime); 2676 } 2677 2678 // finally let go of all our tracks, without the lock held 2679 // since we can't guarantee the destructors won't acquire that 2680 // same lock. 2681 tracksToRemove.clear(); 2682 outputTracks.clear(); 2683 2684 // Effect chains will be actually deleted here if they were removed from 2685 // mEffectChains list during mixing or effects processing 2686 effectChains.clear(); 2687 } 2688 2689 return false; 2690} 2691 2692void AudioFlinger::DuplicatingThread::addOutputTrack(MixerThread *thread) 2693{ 2694 int frameCount = (3 * mFrameCount * mSampleRate) / thread->sampleRate(); 2695 OutputTrack *outputTrack = new OutputTrack((ThreadBase *)thread, 2696 this, 2697 mSampleRate, 2698 mFormat, 2699 mChannelCount, 2700 frameCount); 2701 if (outputTrack->cblk() != NULL) { 2702 thread->setStreamVolume(AUDIO_STREAM_CNT, 1.0f); 2703 mOutputTracks.add(outputTrack); 2704 LOGV("addOutputTrack() track %p, on thread %p", outputTrack, thread); 2705 updateWaitTime(); 2706 } 2707} 2708 2709void AudioFlinger::DuplicatingThread::removeOutputTrack(MixerThread *thread) 2710{ 2711 Mutex::Autolock _l(mLock); 2712 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2713 if (mOutputTracks[i]->thread() == (ThreadBase *)thread) { 2714 mOutputTracks[i]->destroy(); 2715 mOutputTracks.removeAt(i); 2716 updateWaitTime(); 2717 return; 2718 } 2719 } 2720 LOGV("removeOutputTrack(): unkonwn thread: %p", thread); 2721} 2722 2723void AudioFlinger::DuplicatingThread::updateWaitTime() 2724{ 2725 mWaitTimeMs = UINT_MAX; 2726 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2727 sp<ThreadBase> strong = mOutputTracks[i]->thread().promote(); 2728 if (strong != NULL) { 2729 uint32_t waitTimeMs = (strong->frameCount() * 2 * 1000) / strong->sampleRate(); 2730 if (waitTimeMs < mWaitTimeMs) { 2731 mWaitTimeMs = waitTimeMs; 2732 } 2733 } 2734 } 2735} 2736 2737 2738bool AudioFlinger::DuplicatingThread::outputsReady(SortedVector< sp<OutputTrack> > &outputTracks) 2739{ 2740 for (size_t i = 0; i < outputTracks.size(); i++) { 2741 sp <ThreadBase> thread = outputTracks[i]->thread().promote(); 2742 if (thread == 0) { 2743 LOGW("DuplicatingThread::outputsReady() could not promote thread on output track %p", outputTracks[i].get()); 2744 return false; 2745 } 2746 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 2747 if (playbackThread->standby() && !playbackThread->isSuspended()) { 2748 LOGV("DuplicatingThread output track %p on thread %p Not Ready", outputTracks[i].get(), thread.get()); 2749 return false; 2750 } 2751 } 2752 return true; 2753} 2754 2755uint32_t AudioFlinger::DuplicatingThread::activeSleepTimeUs() 2756{ 2757 return (mWaitTimeMs * 1000) / 2; 2758} 2759 2760// ---------------------------------------------------------------------------- 2761 2762// TrackBase constructor must be called with AudioFlinger::mLock held 2763AudioFlinger::ThreadBase::TrackBase::TrackBase( 2764 const wp<ThreadBase>& thread, 2765 const sp<Client>& client, 2766 uint32_t sampleRate, 2767 int format, 2768 int channelCount, 2769 int frameCount, 2770 uint32_t flags, 2771 const sp<IMemory>& sharedBuffer, 2772 int sessionId) 2773 : RefBase(), 2774 mThread(thread), 2775 mClient(client), 2776 mCblk(0), 2777 mFrameCount(0), 2778 mState(IDLE), 2779 mClientTid(-1), 2780 mFormat(format), 2781 mFlags(flags & ~SYSTEM_FLAGS_MASK), 2782 mSessionId(sessionId) 2783{ 2784 LOGV_IF(sharedBuffer != 0, "sharedBuffer: %p, size: %d", sharedBuffer->pointer(), sharedBuffer->size()); 2785 2786 // LOGD("Creating track with %d buffers @ %d bytes", bufferCount, bufferSize); 2787 size_t size = sizeof(audio_track_cblk_t); 2788 size_t bufferSize = frameCount*channelCount*sizeof(int16_t); 2789 if (sharedBuffer == 0) { 2790 size += bufferSize; 2791 } 2792 2793 if (client != NULL) { 2794 mCblkMemory = client->heap()->allocate(size); 2795 if (mCblkMemory != 0) { 2796 mCblk = static_cast<audio_track_cblk_t *>(mCblkMemory->pointer()); 2797 if (mCblk) { // construct the shared structure in-place. 2798 new(mCblk) audio_track_cblk_t(); 2799 // clear all buffers 2800 mCblk->frameCount = frameCount; 2801 mCblk->sampleRate = sampleRate; 2802 mCblk->channelCount = (uint8_t)channelCount; 2803 if (sharedBuffer == 0) { 2804 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 2805 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 2806 // Force underrun condition to avoid false underrun callback until first data is 2807 // written to buffer (other flags are cleared) 2808 mCblk->flags = CBLK_UNDERRUN_ON; 2809 } else { 2810 mBuffer = sharedBuffer->pointer(); 2811 } 2812 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 2813 } 2814 } else { 2815 LOGE("not enough memory for AudioTrack size=%u", size); 2816 client->heap()->dump("AudioTrack"); 2817 return; 2818 } 2819 } else { 2820 mCblk = (audio_track_cblk_t *)(new uint8_t[size]); 2821 if (mCblk) { // construct the shared structure in-place. 2822 new(mCblk) audio_track_cblk_t(); 2823 // clear all buffers 2824 mCblk->frameCount = frameCount; 2825 mCblk->sampleRate = sampleRate; 2826 mCblk->channelCount = (uint8_t)channelCount; 2827 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 2828 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 2829 // Force underrun condition to avoid false underrun callback until first data is 2830 // written to buffer (other flags are cleared) 2831 mCblk->flags = CBLK_UNDERRUN_ON; 2832 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 2833 } 2834 } 2835} 2836 2837AudioFlinger::ThreadBase::TrackBase::~TrackBase() 2838{ 2839 if (mCblk) { 2840 mCblk->~audio_track_cblk_t(); // destroy our shared-structure. 2841 if (mClient == NULL) { 2842 delete mCblk; 2843 } 2844 } 2845 mCblkMemory.clear(); // and free the shared memory 2846 if (mClient != NULL) { 2847 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 2848 mClient.clear(); 2849 } 2850} 2851 2852void AudioFlinger::ThreadBase::TrackBase::releaseBuffer(AudioBufferProvider::Buffer* buffer) 2853{ 2854 buffer->raw = 0; 2855 mFrameCount = buffer->frameCount; 2856 step(); 2857 buffer->frameCount = 0; 2858} 2859 2860bool AudioFlinger::ThreadBase::TrackBase::step() { 2861 bool result; 2862 audio_track_cblk_t* cblk = this->cblk(); 2863 2864 result = cblk->stepServer(mFrameCount); 2865 if (!result) { 2866 LOGV("stepServer failed acquiring cblk mutex"); 2867 mFlags |= STEPSERVER_FAILED; 2868 } 2869 return result; 2870} 2871 2872void AudioFlinger::ThreadBase::TrackBase::reset() { 2873 audio_track_cblk_t* cblk = this->cblk(); 2874 2875 cblk->user = 0; 2876 cblk->server = 0; 2877 cblk->userBase = 0; 2878 cblk->serverBase = 0; 2879 mFlags &= (uint32_t)(~SYSTEM_FLAGS_MASK); 2880 LOGV("TrackBase::reset"); 2881} 2882 2883sp<IMemory> AudioFlinger::ThreadBase::TrackBase::getCblk() const 2884{ 2885 return mCblkMemory; 2886} 2887 2888int AudioFlinger::ThreadBase::TrackBase::sampleRate() const { 2889 return (int)mCblk->sampleRate; 2890} 2891 2892int AudioFlinger::ThreadBase::TrackBase::channelCount() const { 2893 return (int)mCblk->channelCount; 2894} 2895 2896void* AudioFlinger::ThreadBase::TrackBase::getBuffer(uint32_t offset, uint32_t frames) const { 2897 audio_track_cblk_t* cblk = this->cblk(); 2898 int8_t *bufferStart = (int8_t *)mBuffer + (offset-cblk->serverBase)*cblk->frameSize; 2899 int8_t *bufferEnd = bufferStart + frames * cblk->frameSize; 2900 2901 // Check validity of returned pointer in case the track control block would have been corrupted. 2902 if (bufferStart < mBuffer || bufferStart > bufferEnd || bufferEnd > mBufferEnd || 2903 ((unsigned long)bufferStart & (unsigned long)(cblk->frameSize - 1))) { 2904 LOGE("TrackBase::getBuffer buffer out of range:\n start: %p, end %p , mBuffer %p mBufferEnd %p\n \ 2905 server %d, serverBase %d, user %d, userBase %d, channelCount %d", 2906 bufferStart, bufferEnd, mBuffer, mBufferEnd, 2907 cblk->server, cblk->serverBase, cblk->user, cblk->userBase, cblk->channelCount); 2908 return 0; 2909 } 2910 2911 return bufferStart; 2912} 2913 2914// ---------------------------------------------------------------------------- 2915 2916// Track constructor must be called with AudioFlinger::mLock and ThreadBase::mLock held 2917AudioFlinger::PlaybackThread::Track::Track( 2918 const wp<ThreadBase>& thread, 2919 const sp<Client>& client, 2920 int streamType, 2921 uint32_t sampleRate, 2922 int format, 2923 int channelCount, 2924 int frameCount, 2925 const sp<IMemory>& sharedBuffer, 2926 int sessionId) 2927 : TrackBase(thread, client, sampleRate, format, channelCount, frameCount, 0, sharedBuffer, sessionId), 2928 mMute(false), mSharedBuffer(sharedBuffer), mName(-1), mMainBuffer(NULL), mAuxBuffer(NULL), 2929 mAuxEffectId(0), mHasVolumeController(false) 2930{ 2931 if (mCblk != NULL) { 2932 sp<ThreadBase> baseThread = thread.promote(); 2933 if (baseThread != 0) { 2934 PlaybackThread *playbackThread = (PlaybackThread *)baseThread.get(); 2935 mName = playbackThread->getTrackName_l(); 2936 mMainBuffer = playbackThread->mixBuffer(); 2937 } 2938 LOGV("Track constructor name %d, calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 2939 if (mName < 0) { 2940 LOGE("no more track names available"); 2941 } 2942 mVolume[0] = 1.0f; 2943 mVolume[1] = 1.0f; 2944 mStreamType = streamType; 2945 // NOTE: audio_track_cblk_t::frameSize for 8 bit PCM data is based on a sample size of 2946 // 16 bit because data is converted to 16 bit before being stored in buffer by AudioTrack 2947 mCblk->frameSize = audio_is_linear_pcm(format) ? channelCount * sizeof(int16_t) : sizeof(int8_t); 2948 } 2949} 2950 2951AudioFlinger::PlaybackThread::Track::~Track() 2952{ 2953 LOGV("PlaybackThread::Track destructor"); 2954 sp<ThreadBase> thread = mThread.promote(); 2955 if (thread != 0) { 2956 Mutex::Autolock _l(thread->mLock); 2957 mState = TERMINATED; 2958 } 2959} 2960 2961void AudioFlinger::PlaybackThread::Track::destroy() 2962{ 2963 // NOTE: destroyTrack_l() can remove a strong reference to this Track 2964 // by removing it from mTracks vector, so there is a risk that this Tracks's 2965 // desctructor is called. As the destructor needs to lock mLock, 2966 // we must acquire a strong reference on this Track before locking mLock 2967 // here so that the destructor is called only when exiting this function. 2968 // On the other hand, as long as Track::destroy() is only called by 2969 // TrackHandle destructor, the TrackHandle still holds a strong ref on 2970 // this Track with its member mTrack. 2971 sp<Track> keep(this); 2972 { // scope for mLock 2973 sp<ThreadBase> thread = mThread.promote(); 2974 if (thread != 0) { 2975 if (!isOutputTrack()) { 2976 if (mState == ACTIVE || mState == RESUMING) { 2977 AudioSystem::stopOutput(thread->id(), 2978 (audio_stream_type_t)mStreamType, 2979 mSessionId); 2980 2981 // to track the speaker usage 2982 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 2983 } 2984 AudioSystem::releaseOutput(thread->id()); 2985 } 2986 Mutex::Autolock _l(thread->mLock); 2987 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 2988 playbackThread->destroyTrack_l(this); 2989 } 2990 } 2991} 2992 2993void AudioFlinger::PlaybackThread::Track::dump(char* buffer, size_t size) 2994{ 2995 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", 2996 mName - AudioMixer::TRACK0, 2997 (mClient == NULL) ? getpid() : mClient->pid(), 2998 mStreamType, 2999 mFormat, 3000 mCblk->channelCount, 3001 mSessionId, 3002 mFrameCount, 3003 mState, 3004 mMute, 3005 mFillingUpStatus, 3006 mCblk->sampleRate, 3007 mCblk->volume[0], 3008 mCblk->volume[1], 3009 mCblk->server, 3010 mCblk->user, 3011 (int)mMainBuffer, 3012 (int)mAuxBuffer); 3013} 3014 3015status_t AudioFlinger::PlaybackThread::Track::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3016{ 3017 audio_track_cblk_t* cblk = this->cblk(); 3018 uint32_t framesReady; 3019 uint32_t framesReq = buffer->frameCount; 3020 3021 // Check if last stepServer failed, try to step now 3022 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3023 if (!step()) goto getNextBuffer_exit; 3024 LOGV("stepServer recovered"); 3025 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3026 } 3027 3028 framesReady = cblk->framesReady(); 3029 3030 if (LIKELY(framesReady)) { 3031 uint32_t s = cblk->server; 3032 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3033 3034 bufferEnd = (cblk->loopEnd < bufferEnd) ? cblk->loopEnd : bufferEnd; 3035 if (framesReq > framesReady) { 3036 framesReq = framesReady; 3037 } 3038 if (s + framesReq > bufferEnd) { 3039 framesReq = bufferEnd - s; 3040 } 3041 3042 buffer->raw = getBuffer(s, framesReq); 3043 if (buffer->raw == 0) goto getNextBuffer_exit; 3044 3045 buffer->frameCount = framesReq; 3046 return NO_ERROR; 3047 } 3048 3049getNextBuffer_exit: 3050 buffer->raw = 0; 3051 buffer->frameCount = 0; 3052 LOGV("getNextBuffer() no more data for track %d on thread %p", mName, mThread.unsafe_get()); 3053 return NOT_ENOUGH_DATA; 3054} 3055 3056bool AudioFlinger::PlaybackThread::Track::isReady() const { 3057 if (mFillingUpStatus != FS_FILLING || isStopped() || isPausing()) return true; 3058 3059 if (mCblk->framesReady() >= mCblk->frameCount || 3060 (mCblk->flags & CBLK_FORCEREADY_MSK)) { 3061 mFillingUpStatus = FS_FILLED; 3062 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3063 return true; 3064 } 3065 return false; 3066} 3067 3068status_t AudioFlinger::PlaybackThread::Track::start() 3069{ 3070 status_t status = NO_ERROR; 3071 LOGV("start(%d), calling thread %d session %d", 3072 mName, IPCThreadState::self()->getCallingPid(), mSessionId); 3073 sp<ThreadBase> thread = mThread.promote(); 3074 if (thread != 0) { 3075 Mutex::Autolock _l(thread->mLock); 3076 int state = mState; 3077 // here the track could be either new, or restarted 3078 // in both cases "unstop" the track 3079 if (mState == PAUSED) { 3080 mState = TrackBase::RESUMING; 3081 LOGV("PAUSED => RESUMING (%d) on thread %p", mName, this); 3082 } else { 3083 mState = TrackBase::ACTIVE; 3084 LOGV("? => ACTIVE (%d) on thread %p", mName, this); 3085 } 3086 3087 if (!isOutputTrack() && state != ACTIVE && state != RESUMING) { 3088 thread->mLock.unlock(); 3089 status = AudioSystem::startOutput(thread->id(), 3090 (audio_stream_type_t)mStreamType, 3091 mSessionId); 3092 thread->mLock.lock(); 3093 3094 // to track the speaker usage 3095 if (status == NO_ERROR) { 3096 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStart); 3097 } 3098 } 3099 if (status == NO_ERROR) { 3100 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3101 playbackThread->addTrack_l(this); 3102 } else { 3103 mState = state; 3104 } 3105 } else { 3106 status = BAD_VALUE; 3107 } 3108 return status; 3109} 3110 3111void AudioFlinger::PlaybackThread::Track::stop() 3112{ 3113 LOGV("stop(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3114 sp<ThreadBase> thread = mThread.promote(); 3115 if (thread != 0) { 3116 Mutex::Autolock _l(thread->mLock); 3117 int state = mState; 3118 if (mState > STOPPED) { 3119 mState = STOPPED; 3120 // If the track is not active (PAUSED and buffers full), flush buffers 3121 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3122 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3123 reset(); 3124 } 3125 LOGV("(> STOPPED) => STOPPED (%d) on thread %p", mName, playbackThread); 3126 } 3127 if (!isOutputTrack() && (state == ACTIVE || state == RESUMING)) { 3128 thread->mLock.unlock(); 3129 AudioSystem::stopOutput(thread->id(), 3130 (audio_stream_type_t)mStreamType, 3131 mSessionId); 3132 thread->mLock.lock(); 3133 3134 // to track the speaker usage 3135 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3136 } 3137 } 3138} 3139 3140void AudioFlinger::PlaybackThread::Track::pause() 3141{ 3142 LOGV("pause(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3143 sp<ThreadBase> thread = mThread.promote(); 3144 if (thread != 0) { 3145 Mutex::Autolock _l(thread->mLock); 3146 if (mState == ACTIVE || mState == RESUMING) { 3147 mState = PAUSING; 3148 LOGV("ACTIVE/RESUMING => PAUSING (%d) on thread %p", mName, thread.get()); 3149 if (!isOutputTrack()) { 3150 thread->mLock.unlock(); 3151 AudioSystem::stopOutput(thread->id(), 3152 (audio_stream_type_t)mStreamType, 3153 mSessionId); 3154 thread->mLock.lock(); 3155 3156 // to track the speaker usage 3157 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3158 } 3159 } 3160 } 3161} 3162 3163void AudioFlinger::PlaybackThread::Track::flush() 3164{ 3165 LOGV("flush(%d)", mName); 3166 sp<ThreadBase> thread = mThread.promote(); 3167 if (thread != 0) { 3168 Mutex::Autolock _l(thread->mLock); 3169 if (mState != STOPPED && mState != PAUSED && mState != PAUSING) { 3170 return; 3171 } 3172 // No point remaining in PAUSED state after a flush => go to 3173 // STOPPED state 3174 mState = STOPPED; 3175 3176 // do not reset the track if it is still in the process of being stopped or paused. 3177 // this will be done by prepareTracks_l() when the track is stopped. 3178 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3179 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3180 reset(); 3181 } 3182 } 3183} 3184 3185void AudioFlinger::PlaybackThread::Track::reset() 3186{ 3187 // Do not reset twice to avoid discarding data written just after a flush and before 3188 // the audioflinger thread detects the track is stopped. 3189 if (!mResetDone) { 3190 TrackBase::reset(); 3191 // Force underrun condition to avoid false underrun callback until first data is 3192 // written to buffer 3193 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3194 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3195 mFillingUpStatus = FS_FILLING; 3196 mResetDone = true; 3197 } 3198} 3199 3200void AudioFlinger::PlaybackThread::Track::mute(bool muted) 3201{ 3202 mMute = muted; 3203} 3204 3205void AudioFlinger::PlaybackThread::Track::setVolume(float left, float right) 3206{ 3207 mVolume[0] = left; 3208 mVolume[1] = right; 3209} 3210 3211status_t AudioFlinger::PlaybackThread::Track::attachAuxEffect(int EffectId) 3212{ 3213 status_t status = DEAD_OBJECT; 3214 sp<ThreadBase> thread = mThread.promote(); 3215 if (thread != 0) { 3216 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3217 status = playbackThread->attachAuxEffect(this, EffectId); 3218 } 3219 return status; 3220} 3221 3222void AudioFlinger::PlaybackThread::Track::setAuxBuffer(int EffectId, int32_t *buffer) 3223{ 3224 mAuxEffectId = EffectId; 3225 mAuxBuffer = buffer; 3226} 3227 3228// ---------------------------------------------------------------------------- 3229 3230// RecordTrack constructor must be called with AudioFlinger::mLock held 3231AudioFlinger::RecordThread::RecordTrack::RecordTrack( 3232 const wp<ThreadBase>& thread, 3233 const sp<Client>& client, 3234 uint32_t sampleRate, 3235 int format, 3236 int channelCount, 3237 int frameCount, 3238 uint32_t flags, 3239 int sessionId) 3240 : TrackBase(thread, client, sampleRate, format, 3241 channelCount, frameCount, flags, 0, sessionId), 3242 mOverflow(false) 3243{ 3244 if (mCblk != NULL) { 3245 LOGV("RecordTrack constructor, size %d", (int)mBufferEnd - (int)mBuffer); 3246 if (format == AUDIO_FORMAT_PCM_16_BIT) { 3247 mCblk->frameSize = channelCount * sizeof(int16_t); 3248 } else if (format == AUDIO_FORMAT_PCM_8_BIT) { 3249 mCblk->frameSize = channelCount * sizeof(int8_t); 3250 } else { 3251 mCblk->frameSize = sizeof(int8_t); 3252 } 3253 } 3254} 3255 3256AudioFlinger::RecordThread::RecordTrack::~RecordTrack() 3257{ 3258 sp<ThreadBase> thread = mThread.promote(); 3259 if (thread != 0) { 3260 AudioSystem::releaseInput(thread->id()); 3261 } 3262} 3263 3264status_t AudioFlinger::RecordThread::RecordTrack::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3265{ 3266 audio_track_cblk_t* cblk = this->cblk(); 3267 uint32_t framesAvail; 3268 uint32_t framesReq = buffer->frameCount; 3269 3270 // Check if last stepServer failed, try to step now 3271 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3272 if (!step()) goto getNextBuffer_exit; 3273 LOGV("stepServer recovered"); 3274 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3275 } 3276 3277 framesAvail = cblk->framesAvailable_l(); 3278 3279 if (LIKELY(framesAvail)) { 3280 uint32_t s = cblk->server; 3281 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3282 3283 if (framesReq > framesAvail) { 3284 framesReq = framesAvail; 3285 } 3286 if (s + framesReq > bufferEnd) { 3287 framesReq = bufferEnd - s; 3288 } 3289 3290 buffer->raw = getBuffer(s, framesReq); 3291 if (buffer->raw == 0) goto getNextBuffer_exit; 3292 3293 buffer->frameCount = framesReq; 3294 return NO_ERROR; 3295 } 3296 3297getNextBuffer_exit: 3298 buffer->raw = 0; 3299 buffer->frameCount = 0; 3300 return NOT_ENOUGH_DATA; 3301} 3302 3303status_t AudioFlinger::RecordThread::RecordTrack::start() 3304{ 3305 sp<ThreadBase> thread = mThread.promote(); 3306 if (thread != 0) { 3307 RecordThread *recordThread = (RecordThread *)thread.get(); 3308 return recordThread->start(this); 3309 } else { 3310 return BAD_VALUE; 3311 } 3312} 3313 3314void AudioFlinger::RecordThread::RecordTrack::stop() 3315{ 3316 sp<ThreadBase> thread = mThread.promote(); 3317 if (thread != 0) { 3318 RecordThread *recordThread = (RecordThread *)thread.get(); 3319 recordThread->stop(this); 3320 TrackBase::reset(); 3321 // Force overerrun condition to avoid false overrun callback until first data is 3322 // read from buffer 3323 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3324 } 3325} 3326 3327void AudioFlinger::RecordThread::RecordTrack::dump(char* buffer, size_t size) 3328{ 3329 snprintf(buffer, size, " %05d %03u %03u %05d %04u %01d %05u %08x %08x\n", 3330 (mClient == NULL) ? getpid() : mClient->pid(), 3331 mFormat, 3332 mCblk->channelCount, 3333 mSessionId, 3334 mFrameCount, 3335 mState, 3336 mCblk->sampleRate, 3337 mCblk->server, 3338 mCblk->user); 3339} 3340 3341 3342// ---------------------------------------------------------------------------- 3343 3344AudioFlinger::PlaybackThread::OutputTrack::OutputTrack( 3345 const wp<ThreadBase>& thread, 3346 DuplicatingThread *sourceThread, 3347 uint32_t sampleRate, 3348 int format, 3349 int channelCount, 3350 int frameCount) 3351 : Track(thread, NULL, AUDIO_STREAM_CNT, sampleRate, format, channelCount, frameCount, NULL, 0), 3352 mActive(false), mSourceThread(sourceThread) 3353{ 3354 3355 PlaybackThread *playbackThread = (PlaybackThread *)thread.unsafe_get(); 3356 if (mCblk != NULL) { 3357 mCblk->flags |= CBLK_DIRECTION_OUT; 3358 mCblk->buffers = (char*)mCblk + sizeof(audio_track_cblk_t); 3359 mCblk->volume[0] = mCblk->volume[1] = 0x1000; 3360 mOutBuffer.frameCount = 0; 3361 playbackThread->mTracks.add(this); 3362 LOGV("OutputTrack constructor mCblk %p, mBuffer %p, mCblk->buffers %p, mCblk->frameCount %d, mCblk->sampleRate %d, mCblk->channelCount %d mBufferEnd %p", 3363 mCblk, mBuffer, mCblk->buffers, mCblk->frameCount, mCblk->sampleRate, mCblk->channelCount, mBufferEnd); 3364 } else { 3365 LOGW("Error creating output track on thread %p", playbackThread); 3366 } 3367} 3368 3369AudioFlinger::PlaybackThread::OutputTrack::~OutputTrack() 3370{ 3371 clearBufferQueue(); 3372} 3373 3374status_t AudioFlinger::PlaybackThread::OutputTrack::start() 3375{ 3376 status_t status = Track::start(); 3377 if (status != NO_ERROR) { 3378 return status; 3379 } 3380 3381 mActive = true; 3382 mRetryCount = 127; 3383 return status; 3384} 3385 3386void AudioFlinger::PlaybackThread::OutputTrack::stop() 3387{ 3388 Track::stop(); 3389 clearBufferQueue(); 3390 mOutBuffer.frameCount = 0; 3391 mActive = false; 3392} 3393 3394bool AudioFlinger::PlaybackThread::OutputTrack::write(int16_t* data, uint32_t frames) 3395{ 3396 Buffer *pInBuffer; 3397 Buffer inBuffer; 3398 uint32_t channelCount = mCblk->channelCount; 3399 bool outputBufferFull = false; 3400 inBuffer.frameCount = frames; 3401 inBuffer.i16 = data; 3402 3403 uint32_t waitTimeLeftMs = mSourceThread->waitTimeMs(); 3404 3405 if (!mActive && frames != 0) { 3406 start(); 3407 sp<ThreadBase> thread = mThread.promote(); 3408 if (thread != 0) { 3409 MixerThread *mixerThread = (MixerThread *)thread.get(); 3410 if (mCblk->frameCount > frames){ 3411 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3412 uint32_t startFrames = (mCblk->frameCount - frames); 3413 pInBuffer = new Buffer; 3414 pInBuffer->mBuffer = new int16_t[startFrames * channelCount]; 3415 pInBuffer->frameCount = startFrames; 3416 pInBuffer->i16 = pInBuffer->mBuffer; 3417 memset(pInBuffer->raw, 0, startFrames * channelCount * sizeof(int16_t)); 3418 mBufferQueue.add(pInBuffer); 3419 } else { 3420 LOGW ("OutputTrack::write() %p no more buffers in queue", this); 3421 } 3422 } 3423 } 3424 } 3425 3426 while (waitTimeLeftMs) { 3427 // First write pending buffers, then new data 3428 if (mBufferQueue.size()) { 3429 pInBuffer = mBufferQueue.itemAt(0); 3430 } else { 3431 pInBuffer = &inBuffer; 3432 } 3433 3434 if (pInBuffer->frameCount == 0) { 3435 break; 3436 } 3437 3438 if (mOutBuffer.frameCount == 0) { 3439 mOutBuffer.frameCount = pInBuffer->frameCount; 3440 nsecs_t startTime = systemTime(); 3441 if (obtainBuffer(&mOutBuffer, waitTimeLeftMs) == (status_t)AudioTrack::NO_MORE_BUFFERS) { 3442 LOGV ("OutputTrack::write() %p thread %p no more output buffers", this, mThread.unsafe_get()); 3443 outputBufferFull = true; 3444 break; 3445 } 3446 uint32_t waitTimeMs = (uint32_t)ns2ms(systemTime() - startTime); 3447 if (waitTimeLeftMs >= waitTimeMs) { 3448 waitTimeLeftMs -= waitTimeMs; 3449 } else { 3450 waitTimeLeftMs = 0; 3451 } 3452 } 3453 3454 uint32_t outFrames = pInBuffer->frameCount > mOutBuffer.frameCount ? mOutBuffer.frameCount : pInBuffer->frameCount; 3455 memcpy(mOutBuffer.raw, pInBuffer->raw, outFrames * channelCount * sizeof(int16_t)); 3456 mCblk->stepUser(outFrames); 3457 pInBuffer->frameCount -= outFrames; 3458 pInBuffer->i16 += outFrames * channelCount; 3459 mOutBuffer.frameCount -= outFrames; 3460 mOutBuffer.i16 += outFrames * channelCount; 3461 3462 if (pInBuffer->frameCount == 0) { 3463 if (mBufferQueue.size()) { 3464 mBufferQueue.removeAt(0); 3465 delete [] pInBuffer->mBuffer; 3466 delete pInBuffer; 3467 LOGV("OutputTrack::write() %p thread %p released overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3468 } else { 3469 break; 3470 } 3471 } 3472 } 3473 3474 // If we could not write all frames, allocate a buffer and queue it for next time. 3475 if (inBuffer.frameCount) { 3476 sp<ThreadBase> thread = mThread.promote(); 3477 if (thread != 0 && !thread->standby()) { 3478 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3479 pInBuffer = new Buffer; 3480 pInBuffer->mBuffer = new int16_t[inBuffer.frameCount * channelCount]; 3481 pInBuffer->frameCount = inBuffer.frameCount; 3482 pInBuffer->i16 = pInBuffer->mBuffer; 3483 memcpy(pInBuffer->raw, inBuffer.raw, inBuffer.frameCount * channelCount * sizeof(int16_t)); 3484 mBufferQueue.add(pInBuffer); 3485 LOGV("OutputTrack::write() %p thread %p adding overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3486 } else { 3487 LOGW("OutputTrack::write() %p thread %p no more overflow buffers", mThread.unsafe_get(), this); 3488 } 3489 } 3490 } 3491 3492 // Calling write() with a 0 length buffer, means that no more data will be written: 3493 // If no more buffers are pending, fill output track buffer to make sure it is started 3494 // by output mixer. 3495 if (frames == 0 && mBufferQueue.size() == 0) { 3496 if (mCblk->user < mCblk->frameCount) { 3497 frames = mCblk->frameCount - mCblk->user; 3498 pInBuffer = new Buffer; 3499 pInBuffer->mBuffer = new int16_t[frames * channelCount]; 3500 pInBuffer->frameCount = frames; 3501 pInBuffer->i16 = pInBuffer->mBuffer; 3502 memset(pInBuffer->raw, 0, frames * channelCount * sizeof(int16_t)); 3503 mBufferQueue.add(pInBuffer); 3504 } else if (mActive) { 3505 stop(); 3506 } 3507 } 3508 3509 return outputBufferFull; 3510} 3511 3512status_t AudioFlinger::PlaybackThread::OutputTrack::obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs) 3513{ 3514 int active; 3515 status_t result; 3516 audio_track_cblk_t* cblk = mCblk; 3517 uint32_t framesReq = buffer->frameCount; 3518 3519// LOGV("OutputTrack::obtainBuffer user %d, server %d", cblk->user, cblk->server); 3520 buffer->frameCount = 0; 3521 3522 uint32_t framesAvail = cblk->framesAvailable(); 3523 3524 3525 if (framesAvail == 0) { 3526 Mutex::Autolock _l(cblk->lock); 3527 goto start_loop_here; 3528 while (framesAvail == 0) { 3529 active = mActive; 3530 if (UNLIKELY(!active)) { 3531 LOGV("Not active and NO_MORE_BUFFERS"); 3532 return AudioTrack::NO_MORE_BUFFERS; 3533 } 3534 result = cblk->cv.waitRelative(cblk->lock, milliseconds(waitTimeMs)); 3535 if (result != NO_ERROR) { 3536 return AudioTrack::NO_MORE_BUFFERS; 3537 } 3538 // read the server count again 3539 start_loop_here: 3540 framesAvail = cblk->framesAvailable_l(); 3541 } 3542 } 3543 3544// if (framesAvail < framesReq) { 3545// return AudioTrack::NO_MORE_BUFFERS; 3546// } 3547 3548 if (framesReq > framesAvail) { 3549 framesReq = framesAvail; 3550 } 3551 3552 uint32_t u = cblk->user; 3553 uint32_t bufferEnd = cblk->userBase + cblk->frameCount; 3554 3555 if (u + framesReq > bufferEnd) { 3556 framesReq = bufferEnd - u; 3557 } 3558 3559 buffer->frameCount = framesReq; 3560 buffer->raw = (void *)cblk->buffer(u); 3561 return NO_ERROR; 3562} 3563 3564 3565void AudioFlinger::PlaybackThread::OutputTrack::clearBufferQueue() 3566{ 3567 size_t size = mBufferQueue.size(); 3568 Buffer *pBuffer; 3569 3570 for (size_t i = 0; i < size; i++) { 3571 pBuffer = mBufferQueue.itemAt(i); 3572 delete [] pBuffer->mBuffer; 3573 delete pBuffer; 3574 } 3575 mBufferQueue.clear(); 3576} 3577 3578// ---------------------------------------------------------------------------- 3579 3580AudioFlinger::Client::Client(const sp<AudioFlinger>& audioFlinger, pid_t pid) 3581 : RefBase(), 3582 mAudioFlinger(audioFlinger), 3583 mMemoryDealer(new MemoryDealer(1024*1024, "AudioFlinger::Client")), 3584 mPid(pid) 3585{ 3586 // 1 MB of address space is good for 32 tracks, 8 buffers each, 4 KB/buffer 3587} 3588 3589// Client destructor must be called with AudioFlinger::mLock held 3590AudioFlinger::Client::~Client() 3591{ 3592 mAudioFlinger->removeClient_l(mPid); 3593} 3594 3595const sp<MemoryDealer>& AudioFlinger::Client::heap() const 3596{ 3597 return mMemoryDealer; 3598} 3599 3600// ---------------------------------------------------------------------------- 3601 3602AudioFlinger::NotificationClient::NotificationClient(const sp<AudioFlinger>& audioFlinger, 3603 const sp<IAudioFlingerClient>& client, 3604 pid_t pid) 3605 : mAudioFlinger(audioFlinger), mPid(pid), mClient(client) 3606{ 3607} 3608 3609AudioFlinger::NotificationClient::~NotificationClient() 3610{ 3611 mClient.clear(); 3612} 3613 3614void AudioFlinger::NotificationClient::binderDied(const wp<IBinder>& who) 3615{ 3616 sp<NotificationClient> keep(this); 3617 { 3618 mAudioFlinger->removeNotificationClient(mPid); 3619 } 3620} 3621 3622// ---------------------------------------------------------------------------- 3623 3624AudioFlinger::TrackHandle::TrackHandle(const sp<AudioFlinger::PlaybackThread::Track>& track) 3625 : BnAudioTrack(), 3626 mTrack(track) 3627{ 3628} 3629 3630AudioFlinger::TrackHandle::~TrackHandle() { 3631 // just stop the track on deletion, associated resources 3632 // will be freed from the main thread once all pending buffers have 3633 // been played. Unless it's not in the active track list, in which 3634 // case we free everything now... 3635 mTrack->destroy(); 3636} 3637 3638status_t AudioFlinger::TrackHandle::start() { 3639 return mTrack->start(); 3640} 3641 3642void AudioFlinger::TrackHandle::stop() { 3643 mTrack->stop(); 3644} 3645 3646void AudioFlinger::TrackHandle::flush() { 3647 mTrack->flush(); 3648} 3649 3650void AudioFlinger::TrackHandle::mute(bool e) { 3651 mTrack->mute(e); 3652} 3653 3654void AudioFlinger::TrackHandle::pause() { 3655 mTrack->pause(); 3656} 3657 3658void AudioFlinger::TrackHandle::setVolume(float left, float right) { 3659 mTrack->setVolume(left, right); 3660} 3661 3662sp<IMemory> AudioFlinger::TrackHandle::getCblk() const { 3663 return mTrack->getCblk(); 3664} 3665 3666status_t AudioFlinger::TrackHandle::attachAuxEffect(int EffectId) 3667{ 3668 return mTrack->attachAuxEffect(EffectId); 3669} 3670 3671status_t AudioFlinger::TrackHandle::onTransact( 3672 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 3673{ 3674 return BnAudioTrack::onTransact(code, data, reply, flags); 3675} 3676 3677// ---------------------------------------------------------------------------- 3678 3679sp<IAudioRecord> AudioFlinger::openRecord( 3680 pid_t pid, 3681 int input, 3682 uint32_t sampleRate, 3683 int format, 3684 int channelCount, 3685 int frameCount, 3686 uint32_t flags, 3687 int *sessionId, 3688 status_t *status) 3689{ 3690 sp<RecordThread::RecordTrack> recordTrack; 3691 sp<RecordHandle> recordHandle; 3692 sp<Client> client; 3693 wp<Client> wclient; 3694 status_t lStatus; 3695 RecordThread *thread; 3696 size_t inFrameCount; 3697 int lSessionId; 3698 3699 // check calling permissions 3700 if (!recordingAllowed()) { 3701 lStatus = PERMISSION_DENIED; 3702 goto Exit; 3703 } 3704 3705 // add client to list 3706 { // scope for mLock 3707 Mutex::Autolock _l(mLock); 3708 thread = checkRecordThread_l(input); 3709 if (thread == NULL) { 3710 lStatus = BAD_VALUE; 3711 goto Exit; 3712 } 3713 3714 wclient = mClients.valueFor(pid); 3715 if (wclient != NULL) { 3716 client = wclient.promote(); 3717 } else { 3718 client = new Client(this, pid); 3719 mClients.add(pid, client); 3720 } 3721 3722 // If no audio session id is provided, create one here 3723 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 3724 lSessionId = *sessionId; 3725 } else { 3726 lSessionId = nextUniqueId_l(); 3727 if (sessionId != NULL) { 3728 *sessionId = lSessionId; 3729 } 3730 } 3731 // create new record track. The record track uses one track in mHardwareMixerThread by convention. 3732 recordTrack = new RecordThread::RecordTrack(thread, client, sampleRate, 3733 format, channelCount, frameCount, flags, lSessionId); 3734 } 3735 if (recordTrack->getCblk() == NULL) { 3736 // remove local strong reference to Client before deleting the RecordTrack so that the Client 3737 // destructor is called by the TrackBase destructor with mLock held 3738 client.clear(); 3739 recordTrack.clear(); 3740 lStatus = NO_MEMORY; 3741 goto Exit; 3742 } 3743 3744 // return to handle to client 3745 recordHandle = new RecordHandle(recordTrack); 3746 lStatus = NO_ERROR; 3747 3748Exit: 3749 if (status) { 3750 *status = lStatus; 3751 } 3752 return recordHandle; 3753} 3754 3755// ---------------------------------------------------------------------------- 3756 3757AudioFlinger::RecordHandle::RecordHandle(const sp<AudioFlinger::RecordThread::RecordTrack>& recordTrack) 3758 : BnAudioRecord(), 3759 mRecordTrack(recordTrack) 3760{ 3761} 3762 3763AudioFlinger::RecordHandle::~RecordHandle() { 3764 stop(); 3765} 3766 3767status_t AudioFlinger::RecordHandle::start() { 3768 LOGV("RecordHandle::start()"); 3769 return mRecordTrack->start(); 3770} 3771 3772void AudioFlinger::RecordHandle::stop() { 3773 LOGV("RecordHandle::stop()"); 3774 mRecordTrack->stop(); 3775} 3776 3777sp<IMemory> AudioFlinger::RecordHandle::getCblk() const { 3778 return mRecordTrack->getCblk(); 3779} 3780 3781status_t AudioFlinger::RecordHandle::onTransact( 3782 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 3783{ 3784 return BnAudioRecord::onTransact(code, data, reply, flags); 3785} 3786 3787// ---------------------------------------------------------------------------- 3788 3789AudioFlinger::RecordThread::RecordThread(const sp<AudioFlinger>& audioFlinger, AudioStreamIn *input, uint32_t sampleRate, uint32_t channels, int id) : 3790 ThreadBase(audioFlinger, id), 3791 mInput(input), mResampler(0), mRsmpOutBuffer(0), mRsmpInBuffer(0) 3792{ 3793 mReqChannelCount = popcount(channels); 3794 mReqSampleRate = sampleRate; 3795 readInputParameters(); 3796} 3797 3798 3799AudioFlinger::RecordThread::~RecordThread() 3800{ 3801 delete[] mRsmpInBuffer; 3802 if (mResampler != 0) { 3803 delete mResampler; 3804 delete[] mRsmpOutBuffer; 3805 } 3806} 3807 3808void AudioFlinger::RecordThread::onFirstRef() 3809{ 3810 const size_t SIZE = 256; 3811 char buffer[SIZE]; 3812 3813 snprintf(buffer, SIZE, "Record Thread %p", this); 3814 3815 run(buffer, PRIORITY_URGENT_AUDIO); 3816} 3817 3818bool AudioFlinger::RecordThread::threadLoop() 3819{ 3820 AudioBufferProvider::Buffer buffer; 3821 sp<RecordTrack> activeTrack; 3822 3823 nsecs_t lastWarning = 0; 3824 3825 // start recording 3826 while (!exitPending()) { 3827 3828 processConfigEvents(); 3829 3830 { // scope for mLock 3831 Mutex::Autolock _l(mLock); 3832 checkForNewParameters_l(); 3833 if (mActiveTrack == 0 && mConfigEvents.isEmpty()) { 3834 if (!mStandby) { 3835 mInput->stream->common.standby(&mInput->stream->common); 3836 mStandby = true; 3837 } 3838 3839 if (exitPending()) break; 3840 3841 LOGV("RecordThread: loop stopping"); 3842 // go to sleep 3843 mWaitWorkCV.wait(mLock); 3844 LOGV("RecordThread: loop starting"); 3845 continue; 3846 } 3847 if (mActiveTrack != 0) { 3848 if (mActiveTrack->mState == TrackBase::PAUSING) { 3849 if (!mStandby) { 3850 mInput->stream->common.standby(&mInput->stream->common); 3851 mStandby = true; 3852 } 3853 mActiveTrack.clear(); 3854 mStartStopCond.broadcast(); 3855 } else if (mActiveTrack->mState == TrackBase::RESUMING) { 3856 if (mReqChannelCount != mActiveTrack->channelCount()) { 3857 mActiveTrack.clear(); 3858 mStartStopCond.broadcast(); 3859 } else if (mBytesRead != 0) { 3860 // record start succeeds only if first read from audio input 3861 // succeeds 3862 if (mBytesRead > 0) { 3863 mActiveTrack->mState = TrackBase::ACTIVE; 3864 } else { 3865 mActiveTrack.clear(); 3866 } 3867 mStartStopCond.broadcast(); 3868 } 3869 mStandby = false; 3870 } 3871 } 3872 } 3873 3874 if (mActiveTrack != 0) { 3875 if (mActiveTrack->mState != TrackBase::ACTIVE && 3876 mActiveTrack->mState != TrackBase::RESUMING) { 3877 usleep(5000); 3878 continue; 3879 } 3880 buffer.frameCount = mFrameCount; 3881 if (LIKELY(mActiveTrack->getNextBuffer(&buffer) == NO_ERROR)) { 3882 size_t framesOut = buffer.frameCount; 3883 if (mResampler == 0) { 3884 // no resampling 3885 while (framesOut) { 3886 size_t framesIn = mFrameCount - mRsmpInIndex; 3887 if (framesIn) { 3888 int8_t *src = (int8_t *)mRsmpInBuffer + mRsmpInIndex * mFrameSize; 3889 int8_t *dst = buffer.i8 + (buffer.frameCount - framesOut) * mActiveTrack->mCblk->frameSize; 3890 if (framesIn > framesOut) 3891 framesIn = framesOut; 3892 mRsmpInIndex += framesIn; 3893 framesOut -= framesIn; 3894 if ((int)mChannelCount == mReqChannelCount || 3895 mFormat != AUDIO_FORMAT_PCM_16_BIT) { 3896 memcpy(dst, src, framesIn * mFrameSize); 3897 } else { 3898 int16_t *src16 = (int16_t *)src; 3899 int16_t *dst16 = (int16_t *)dst; 3900 if (mChannelCount == 1) { 3901 while (framesIn--) { 3902 *dst16++ = *src16; 3903 *dst16++ = *src16++; 3904 } 3905 } else { 3906 while (framesIn--) { 3907 *dst16++ = (int16_t)(((int32_t)*src16 + (int32_t)*(src16 + 1)) >> 1); 3908 src16 += 2; 3909 } 3910 } 3911 } 3912 } 3913 if (framesOut && mFrameCount == mRsmpInIndex) { 3914 if (framesOut == mFrameCount && 3915 ((int)mChannelCount == mReqChannelCount || mFormat != AUDIO_FORMAT_PCM_16_BIT)) { 3916 mBytesRead = mInput->stream->read(mInput->stream, buffer.raw, mInputBytes); 3917 framesOut = 0; 3918 } else { 3919 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 3920 mRsmpInIndex = 0; 3921 } 3922 if (mBytesRead < 0) { 3923 LOGE("Error reading audio input"); 3924 if (mActiveTrack->mState == TrackBase::ACTIVE) { 3925 // Force input into standby so that it tries to 3926 // recover at next read attempt 3927 mInput->stream->common.standby(&mInput->stream->common); 3928 usleep(5000); 3929 } 3930 mRsmpInIndex = mFrameCount; 3931 framesOut = 0; 3932 buffer.frameCount = 0; 3933 } 3934 } 3935 } 3936 } else { 3937 // resampling 3938 3939 memset(mRsmpOutBuffer, 0, framesOut * 2 * sizeof(int32_t)); 3940 // alter output frame count as if we were expecting stereo samples 3941 if (mChannelCount == 1 && mReqChannelCount == 1) { 3942 framesOut >>= 1; 3943 } 3944 mResampler->resample(mRsmpOutBuffer, framesOut, this); 3945 // ditherAndClamp() works as long as all buffers returned by mActiveTrack->getNextBuffer() 3946 // are 32 bit aligned which should be always true. 3947 if (mChannelCount == 2 && mReqChannelCount == 1) { 3948 AudioMixer::ditherAndClamp(mRsmpOutBuffer, mRsmpOutBuffer, framesOut); 3949 // the resampler always outputs stereo samples: do post stereo to mono conversion 3950 int16_t *src = (int16_t *)mRsmpOutBuffer; 3951 int16_t *dst = buffer.i16; 3952 while (framesOut--) { 3953 *dst++ = (int16_t)(((int32_t)*src + (int32_t)*(src + 1)) >> 1); 3954 src += 2; 3955 } 3956 } else { 3957 AudioMixer::ditherAndClamp((int32_t *)buffer.raw, mRsmpOutBuffer, framesOut); 3958 } 3959 3960 } 3961 mActiveTrack->releaseBuffer(&buffer); 3962 mActiveTrack->overflow(); 3963 } 3964 // client isn't retrieving buffers fast enough 3965 else { 3966 if (!mActiveTrack->setOverflow()) { 3967 nsecs_t now = systemTime(); 3968 if ((now - lastWarning) > kWarningThrottle) { 3969 LOGW("RecordThread: buffer overflow"); 3970 lastWarning = now; 3971 } 3972 } 3973 // Release the processor for a while before asking for a new buffer. 3974 // This will give the application more chance to read from the buffer and 3975 // clear the overflow. 3976 usleep(5000); 3977 } 3978 } 3979 } 3980 3981 if (!mStandby) { 3982 mInput->stream->common.standby(&mInput->stream->common); 3983 } 3984 mActiveTrack.clear(); 3985 3986 mStartStopCond.broadcast(); 3987 3988 LOGV("RecordThread %p exiting", this); 3989 return false; 3990} 3991 3992status_t AudioFlinger::RecordThread::start(RecordThread::RecordTrack* recordTrack) 3993{ 3994 LOGV("RecordThread::start"); 3995 sp <ThreadBase> strongMe = this; 3996 status_t status = NO_ERROR; 3997 { 3998 AutoMutex lock(&mLock); 3999 if (mActiveTrack != 0) { 4000 if (recordTrack != mActiveTrack.get()) { 4001 status = -EBUSY; 4002 } else if (mActiveTrack->mState == TrackBase::PAUSING) { 4003 mActiveTrack->mState = TrackBase::ACTIVE; 4004 } 4005 return status; 4006 } 4007 4008 recordTrack->mState = TrackBase::IDLE; 4009 mActiveTrack = recordTrack; 4010 mLock.unlock(); 4011 status_t status = AudioSystem::startInput(mId); 4012 mLock.lock(); 4013 if (status != NO_ERROR) { 4014 mActiveTrack.clear(); 4015 return status; 4016 } 4017 mRsmpInIndex = mFrameCount; 4018 mBytesRead = 0; 4019 if (mResampler != NULL) { 4020 mResampler->reset(); 4021 } 4022 mActiveTrack->mState = TrackBase::RESUMING; 4023 // signal thread to start 4024 LOGV("Signal record thread"); 4025 mWaitWorkCV.signal(); 4026 // do not wait for mStartStopCond if exiting 4027 if (mExiting) { 4028 mActiveTrack.clear(); 4029 status = INVALID_OPERATION; 4030 goto startError; 4031 } 4032 mStartStopCond.wait(mLock); 4033 if (mActiveTrack == 0) { 4034 LOGV("Record failed to start"); 4035 status = BAD_VALUE; 4036 goto startError; 4037 } 4038 LOGV("Record started OK"); 4039 return status; 4040 } 4041startError: 4042 AudioSystem::stopInput(mId); 4043 return status; 4044} 4045 4046void AudioFlinger::RecordThread::stop(RecordThread::RecordTrack* recordTrack) { 4047 LOGV("RecordThread::stop"); 4048 sp <ThreadBase> strongMe = this; 4049 { 4050 AutoMutex lock(&mLock); 4051 if (mActiveTrack != 0 && recordTrack == mActiveTrack.get()) { 4052 mActiveTrack->mState = TrackBase::PAUSING; 4053 // do not wait for mStartStopCond if exiting 4054 if (mExiting) { 4055 return; 4056 } 4057 mStartStopCond.wait(mLock); 4058 // if we have been restarted, recordTrack == mActiveTrack.get() here 4059 if (mActiveTrack == 0 || recordTrack != mActiveTrack.get()) { 4060 mLock.unlock(); 4061 AudioSystem::stopInput(mId); 4062 mLock.lock(); 4063 LOGV("Record stopped OK"); 4064 } 4065 } 4066 } 4067} 4068 4069status_t AudioFlinger::RecordThread::dump(int fd, const Vector<String16>& args) 4070{ 4071 const size_t SIZE = 256; 4072 char buffer[SIZE]; 4073 String8 result; 4074 pid_t pid = 0; 4075 4076 snprintf(buffer, SIZE, "\nInput thread %p internals\n", this); 4077 result.append(buffer); 4078 4079 if (mActiveTrack != 0) { 4080 result.append("Active Track:\n"); 4081 result.append(" Clien Fmt Chn Session Buf S SRate Serv User\n"); 4082 mActiveTrack->dump(buffer, SIZE); 4083 result.append(buffer); 4084 4085 snprintf(buffer, SIZE, "In index: %d\n", mRsmpInIndex); 4086 result.append(buffer); 4087 snprintf(buffer, SIZE, "In size: %d\n", mInputBytes); 4088 result.append(buffer); 4089 snprintf(buffer, SIZE, "Resampling: %d\n", (mResampler != 0)); 4090 result.append(buffer); 4091 snprintf(buffer, SIZE, "Out channel count: %d\n", mReqChannelCount); 4092 result.append(buffer); 4093 snprintf(buffer, SIZE, "Out sample rate: %d\n", mReqSampleRate); 4094 result.append(buffer); 4095 4096 4097 } else { 4098 result.append("No record client\n"); 4099 } 4100 write(fd, result.string(), result.size()); 4101 4102 dumpBase(fd, args); 4103 4104 return NO_ERROR; 4105} 4106 4107status_t AudioFlinger::RecordThread::getNextBuffer(AudioBufferProvider::Buffer* buffer) 4108{ 4109 size_t framesReq = buffer->frameCount; 4110 size_t framesReady = mFrameCount - mRsmpInIndex; 4111 int channelCount; 4112 4113 if (framesReady == 0) { 4114 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 4115 if (mBytesRead < 0) { 4116 LOGE("RecordThread::getNextBuffer() Error reading audio input"); 4117 if (mActiveTrack->mState == TrackBase::ACTIVE) { 4118 // Force input into standby so that it tries to 4119 // recover at next read attempt 4120 mInput->stream->common.standby(&mInput->stream->common); 4121 usleep(5000); 4122 } 4123 buffer->raw = 0; 4124 buffer->frameCount = 0; 4125 return NOT_ENOUGH_DATA; 4126 } 4127 mRsmpInIndex = 0; 4128 framesReady = mFrameCount; 4129 } 4130 4131 if (framesReq > framesReady) { 4132 framesReq = framesReady; 4133 } 4134 4135 if (mChannelCount == 1 && mReqChannelCount == 2) { 4136 channelCount = 1; 4137 } else { 4138 channelCount = 2; 4139 } 4140 buffer->raw = mRsmpInBuffer + mRsmpInIndex * channelCount; 4141 buffer->frameCount = framesReq; 4142 return NO_ERROR; 4143} 4144 4145void AudioFlinger::RecordThread::releaseBuffer(AudioBufferProvider::Buffer* buffer) 4146{ 4147 mRsmpInIndex += buffer->frameCount; 4148 buffer->frameCount = 0; 4149} 4150 4151bool AudioFlinger::RecordThread::checkForNewParameters_l() 4152{ 4153 bool reconfig = false; 4154 4155 while (!mNewParameters.isEmpty()) { 4156 status_t status = NO_ERROR; 4157 String8 keyValuePair = mNewParameters[0]; 4158 AudioParameter param = AudioParameter(keyValuePair); 4159 int value; 4160 int reqFormat = mFormat; 4161 int reqSamplingRate = mReqSampleRate; 4162 int reqChannelCount = mReqChannelCount; 4163 4164 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 4165 reqSamplingRate = value; 4166 reconfig = true; 4167 } 4168 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 4169 reqFormat = value; 4170 reconfig = true; 4171 } 4172 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 4173 reqChannelCount = popcount(value); 4174 reconfig = true; 4175 } 4176 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 4177 // do not accept frame count changes if tracks are open as the track buffer 4178 // size depends on frame count and correct behavior would not be garantied 4179 // if frame count is changed after track creation 4180 if (mActiveTrack != 0) { 4181 status = INVALID_OPERATION; 4182 } else { 4183 reconfig = true; 4184 } 4185 } 4186 if (status == NO_ERROR) { 4187 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4188 if (status == INVALID_OPERATION) { 4189 mInput->stream->common.standby(&mInput->stream->common); 4190 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4191 } 4192 if (reconfig) { 4193 if (status == BAD_VALUE && 4194 reqFormat == mInput->stream->common.get_format(&mInput->stream->common) && 4195 reqFormat == AUDIO_FORMAT_PCM_16_BIT && 4196 ((int)mInput->stream->common.get_sample_rate(&mInput->stream->common) <= (2 * reqSamplingRate)) && 4197 (popcount(mInput->stream->common.get_channels(&mInput->stream->common)) < 3) && 4198 (reqChannelCount < 3)) { 4199 status = NO_ERROR; 4200 } 4201 if (status == NO_ERROR) { 4202 readInputParameters(); 4203 sendConfigEvent_l(AudioSystem::INPUT_CONFIG_CHANGED); 4204 } 4205 } 4206 } 4207 4208 mNewParameters.removeAt(0); 4209 4210 mParamStatus = status; 4211 mParamCond.signal(); 4212 mWaitWorkCV.wait(mLock); 4213 } 4214 return reconfig; 4215} 4216 4217String8 AudioFlinger::RecordThread::getParameters(const String8& keys) 4218{ 4219 char *s; 4220 String8 out_s8; 4221 4222 s = mInput->stream->common.get_parameters(&mInput->stream->common, keys.string()); 4223 out_s8 = String8(s); 4224 free(s); 4225 return out_s8; 4226} 4227 4228void AudioFlinger::RecordThread::audioConfigChanged_l(int event, int param) { 4229 AudioSystem::OutputDescriptor desc; 4230 void *param2 = 0; 4231 4232 switch (event) { 4233 case AudioSystem::INPUT_OPENED: 4234 case AudioSystem::INPUT_CONFIG_CHANGED: 4235 desc.channels = mChannels; 4236 desc.samplingRate = mSampleRate; 4237 desc.format = mFormat; 4238 desc.frameCount = mFrameCount; 4239 desc.latency = 0; 4240 param2 = &desc; 4241 break; 4242 4243 case AudioSystem::INPUT_CLOSED: 4244 default: 4245 break; 4246 } 4247 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 4248} 4249 4250void AudioFlinger::RecordThread::readInputParameters() 4251{ 4252 if (mRsmpInBuffer) delete mRsmpInBuffer; 4253 if (mRsmpOutBuffer) delete mRsmpOutBuffer; 4254 if (mResampler) delete mResampler; 4255 mResampler = 0; 4256 4257 mSampleRate = mInput->stream->common.get_sample_rate(&mInput->stream->common); 4258 mChannels = mInput->stream->common.get_channels(&mInput->stream->common); 4259 mChannelCount = (uint16_t)popcount(mChannels); 4260 mFormat = mInput->stream->common.get_format(&mInput->stream->common); 4261 mFrameSize = (uint16_t)audio_stream_frame_size(&mInput->stream->common); 4262 mInputBytes = mInput->stream->common.get_buffer_size(&mInput->stream->common); 4263 mFrameCount = mInputBytes / mFrameSize; 4264 mRsmpInBuffer = new int16_t[mFrameCount * mChannelCount]; 4265 4266 if (mSampleRate != mReqSampleRate && mChannelCount < 3 && mReqChannelCount < 3) 4267 { 4268 int channelCount; 4269 // optmization: if mono to mono, use the resampler in stereo to stereo mode to avoid 4270 // stereo to mono post process as the resampler always outputs stereo. 4271 if (mChannelCount == 1 && mReqChannelCount == 2) { 4272 channelCount = 1; 4273 } else { 4274 channelCount = 2; 4275 } 4276 mResampler = AudioResampler::create(16, channelCount, mReqSampleRate); 4277 mResampler->setSampleRate(mSampleRate); 4278 mResampler->setVolume(AudioMixer::UNITY_GAIN, AudioMixer::UNITY_GAIN); 4279 mRsmpOutBuffer = new int32_t[mFrameCount * 2]; 4280 4281 // optmization: if mono to mono, alter input frame count as if we were inputing stereo samples 4282 if (mChannelCount == 1 && mReqChannelCount == 1) { 4283 mFrameCount >>= 1; 4284 } 4285 4286 } 4287 mRsmpInIndex = mFrameCount; 4288} 4289 4290unsigned int AudioFlinger::RecordThread::getInputFramesLost() 4291{ 4292 return mInput->stream->get_input_frames_lost(mInput->stream); 4293} 4294 4295// ---------------------------------------------------------------------------- 4296 4297int AudioFlinger::openOutput(uint32_t *pDevices, 4298 uint32_t *pSamplingRate, 4299 uint32_t *pFormat, 4300 uint32_t *pChannels, 4301 uint32_t *pLatencyMs, 4302 uint32_t flags) 4303{ 4304 status_t status; 4305 PlaybackThread *thread = NULL; 4306 mHardwareStatus = AUDIO_HW_OUTPUT_OPEN; 4307 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4308 uint32_t format = pFormat ? *pFormat : 0; 4309 uint32_t channels = pChannels ? *pChannels : 0; 4310 uint32_t latency = pLatencyMs ? *pLatencyMs : 0; 4311 audio_stream_out_t *outStream; 4312 audio_hw_device_t *outHwDev; 4313 4314 LOGV("openOutput(), Device %x, SamplingRate %d, Format %d, Channels %x, flags %x", 4315 pDevices ? *pDevices : 0, 4316 samplingRate, 4317 format, 4318 channels, 4319 flags); 4320 4321 if (pDevices == NULL || *pDevices == 0) { 4322 return 0; 4323 } 4324 4325 Mutex::Autolock _l(mLock); 4326 4327 outHwDev = findSuitableHwDev_l(*pDevices); 4328 if (outHwDev == NULL) 4329 return 0; 4330 4331 status = outHwDev->open_output_stream(outHwDev, *pDevices, (int *)&format, 4332 &channels, &samplingRate, &outStream); 4333 LOGV("openOutput() openOutputStream returned output %p, SamplingRate %d, Format %d, Channels %x, status %d", 4334 outStream, 4335 samplingRate, 4336 format, 4337 channels, 4338 status); 4339 4340 mHardwareStatus = AUDIO_HW_IDLE; 4341 if (outStream != NULL) { 4342 AudioStreamOut *output = new AudioStreamOut(outHwDev, outStream); 4343 int id = nextUniqueId_l(); 4344 4345 if ((flags & AUDIO_POLICY_OUTPUT_FLAG_DIRECT) || 4346 (format != AUDIO_FORMAT_PCM_16_BIT) || 4347 (channels != AUDIO_CHANNEL_OUT_STEREO)) { 4348 thread = new DirectOutputThread(this, output, id, *pDevices); 4349 LOGV("openOutput() created direct output: ID %d thread %p", id, thread); 4350 } else { 4351 thread = new MixerThread(this, output, id, *pDevices); 4352 LOGV("openOutput() created mixer output: ID %d thread %p", id, thread); 4353 } 4354 mPlaybackThreads.add(id, thread); 4355 4356 if (pSamplingRate) *pSamplingRate = samplingRate; 4357 if (pFormat) *pFormat = format; 4358 if (pChannels) *pChannels = channels; 4359 if (pLatencyMs) *pLatencyMs = thread->latency(); 4360 4361 // notify client processes of the new output creation 4362 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4363 return id; 4364 } 4365 4366 return 0; 4367} 4368 4369int AudioFlinger::openDuplicateOutput(int output1, int output2) 4370{ 4371 Mutex::Autolock _l(mLock); 4372 MixerThread *thread1 = checkMixerThread_l(output1); 4373 MixerThread *thread2 = checkMixerThread_l(output2); 4374 4375 if (thread1 == NULL || thread2 == NULL) { 4376 LOGW("openDuplicateOutput() wrong output mixer type for output %d or %d", output1, output2); 4377 return 0; 4378 } 4379 4380 int id = nextUniqueId_l(); 4381 DuplicatingThread *thread = new DuplicatingThread(this, thread1, id); 4382 thread->addOutputTrack(thread2); 4383 mPlaybackThreads.add(id, thread); 4384 // notify client processes of the new output creation 4385 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4386 return id; 4387} 4388 4389status_t AudioFlinger::closeOutput(int output) 4390{ 4391 // keep strong reference on the playback thread so that 4392 // it is not destroyed while exit() is executed 4393 sp <PlaybackThread> thread; 4394 { 4395 Mutex::Autolock _l(mLock); 4396 thread = checkPlaybackThread_l(output); 4397 if (thread == NULL) { 4398 return BAD_VALUE; 4399 } 4400 4401 LOGV("closeOutput() %d", output); 4402 4403 if (thread->type() == PlaybackThread::MIXER) { 4404 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4405 if (mPlaybackThreads.valueAt(i)->type() == PlaybackThread::DUPLICATING) { 4406 DuplicatingThread *dupThread = (DuplicatingThread *)mPlaybackThreads.valueAt(i).get(); 4407 dupThread->removeOutputTrack((MixerThread *)thread.get()); 4408 } 4409 } 4410 } 4411 void *param2 = 0; 4412 audioConfigChanged_l(AudioSystem::OUTPUT_CLOSED, output, param2); 4413 mPlaybackThreads.removeItem(output); 4414 } 4415 thread->exit(); 4416 4417 if (thread->type() != PlaybackThread::DUPLICATING) { 4418 AudioStreamOut *out = thread->getOutput(); 4419 out->hwDev->close_output_stream(out->hwDev, out->stream); 4420 delete out; 4421 } 4422 return NO_ERROR; 4423} 4424 4425status_t AudioFlinger::suspendOutput(int output) 4426{ 4427 Mutex::Autolock _l(mLock); 4428 PlaybackThread *thread = checkPlaybackThread_l(output); 4429 4430 if (thread == NULL) { 4431 return BAD_VALUE; 4432 } 4433 4434 LOGV("suspendOutput() %d", output); 4435 thread->suspend(); 4436 4437 return NO_ERROR; 4438} 4439 4440status_t AudioFlinger::restoreOutput(int output) 4441{ 4442 Mutex::Autolock _l(mLock); 4443 PlaybackThread *thread = checkPlaybackThread_l(output); 4444 4445 if (thread == NULL) { 4446 return BAD_VALUE; 4447 } 4448 4449 LOGV("restoreOutput() %d", output); 4450 4451 thread->restore(); 4452 4453 return NO_ERROR; 4454} 4455 4456int AudioFlinger::openInput(uint32_t *pDevices, 4457 uint32_t *pSamplingRate, 4458 uint32_t *pFormat, 4459 uint32_t *pChannels, 4460 uint32_t acoustics) 4461{ 4462 status_t status; 4463 RecordThread *thread = NULL; 4464 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4465 uint32_t format = pFormat ? *pFormat : 0; 4466 uint32_t channels = pChannels ? *pChannels : 0; 4467 uint32_t reqSamplingRate = samplingRate; 4468 uint32_t reqFormat = format; 4469 uint32_t reqChannels = channels; 4470 audio_stream_in_t *inStream; 4471 audio_hw_device_t *inHwDev; 4472 4473 if (pDevices == NULL || *pDevices == 0) { 4474 return 0; 4475 } 4476 4477 Mutex::Autolock _l(mLock); 4478 4479 inHwDev = findSuitableHwDev_l(*pDevices); 4480 if (inHwDev == NULL) 4481 return 0; 4482 4483 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 4484 &channels, &samplingRate, 4485 (audio_in_acoustics_t)acoustics, 4486 &inStream); 4487 LOGV("openInput() openInputStream returned input %p, SamplingRate %d, Format %d, Channels %x, acoustics %x, status %d", 4488 inStream, 4489 samplingRate, 4490 format, 4491 channels, 4492 acoustics, 4493 status); 4494 4495 // If the input could not be opened with the requested parameters and we can handle the conversion internally, 4496 // try to open again with the proposed parameters. The AudioFlinger can resample the input and do mono to stereo 4497 // or stereo to mono conversions on 16 bit PCM inputs. 4498 if (inStream == NULL && status == BAD_VALUE && 4499 reqFormat == format && format == AUDIO_FORMAT_PCM_16_BIT && 4500 (samplingRate <= 2 * reqSamplingRate) && 4501 (popcount(channels) < 3) && (popcount(reqChannels) < 3)) { 4502 LOGV("openInput() reopening with proposed sampling rate and channels"); 4503 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 4504 &channels, &samplingRate, 4505 (audio_in_acoustics_t)acoustics, 4506 &inStream); 4507 } 4508 4509 if (inStream != NULL) { 4510 AudioStreamIn *input = new AudioStreamIn(inHwDev, inStream); 4511 4512 int id = nextUniqueId_l(); 4513 // Start record thread 4514 thread = new RecordThread(this, input, reqSamplingRate, reqChannels, id); 4515 mRecordThreads.add(id, thread); 4516 LOGV("openInput() created record thread: ID %d thread %p", id, thread); 4517 if (pSamplingRate) *pSamplingRate = reqSamplingRate; 4518 if (pFormat) *pFormat = format; 4519 if (pChannels) *pChannels = reqChannels; 4520 4521 input->stream->common.standby(&input->stream->common); 4522 4523 // notify client processes of the new input creation 4524 thread->audioConfigChanged_l(AudioSystem::INPUT_OPENED); 4525 return id; 4526 } 4527 4528 return 0; 4529} 4530 4531status_t AudioFlinger::closeInput(int input) 4532{ 4533 // keep strong reference on the record thread so that 4534 // it is not destroyed while exit() is executed 4535 sp <RecordThread> thread; 4536 { 4537 Mutex::Autolock _l(mLock); 4538 thread = checkRecordThread_l(input); 4539 if (thread == NULL) { 4540 return BAD_VALUE; 4541 } 4542 4543 LOGV("closeInput() %d", input); 4544 void *param2 = 0; 4545 audioConfigChanged_l(AudioSystem::INPUT_CLOSED, input, param2); 4546 mRecordThreads.removeItem(input); 4547 } 4548 thread->exit(); 4549 4550 AudioStreamIn *in = thread->getInput(); 4551 in->hwDev->close_input_stream(in->hwDev, in->stream); 4552 delete in; 4553 4554 return NO_ERROR; 4555} 4556 4557status_t AudioFlinger::setStreamOutput(uint32_t stream, int output) 4558{ 4559 Mutex::Autolock _l(mLock); 4560 MixerThread *dstThread = checkMixerThread_l(output); 4561 if (dstThread == NULL) { 4562 LOGW("setStreamOutput() bad output id %d", output); 4563 return BAD_VALUE; 4564 } 4565 4566 LOGV("setStreamOutput() stream %d to output %d", stream, output); 4567 audioConfigChanged_l(AudioSystem::STREAM_CONFIG_CHANGED, output, &stream); 4568 4569 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4570 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 4571 if (thread != dstThread && 4572 thread->type() != PlaybackThread::DIRECT) { 4573 MixerThread *srcThread = (MixerThread *)thread; 4574 srcThread->invalidateTracks(stream); 4575 } 4576 } 4577 4578 return NO_ERROR; 4579} 4580 4581 4582int AudioFlinger::newAudioSessionId() 4583{ 4584 AutoMutex _l(mLock); 4585 return nextUniqueId_l(); 4586} 4587 4588// checkPlaybackThread_l() must be called with AudioFlinger::mLock held 4589AudioFlinger::PlaybackThread *AudioFlinger::checkPlaybackThread_l(int output) const 4590{ 4591 PlaybackThread *thread = NULL; 4592 if (mPlaybackThreads.indexOfKey(output) >= 0) { 4593 thread = (PlaybackThread *)mPlaybackThreads.valueFor(output).get(); 4594 } 4595 return thread; 4596} 4597 4598// checkMixerThread_l() must be called with AudioFlinger::mLock held 4599AudioFlinger::MixerThread *AudioFlinger::checkMixerThread_l(int output) const 4600{ 4601 PlaybackThread *thread = checkPlaybackThread_l(output); 4602 if (thread != NULL) { 4603 if (thread->type() == PlaybackThread::DIRECT) { 4604 thread = NULL; 4605 } 4606 } 4607 return (MixerThread *)thread; 4608} 4609 4610// checkRecordThread_l() must be called with AudioFlinger::mLock held 4611AudioFlinger::RecordThread *AudioFlinger::checkRecordThread_l(int input) const 4612{ 4613 RecordThread *thread = NULL; 4614 if (mRecordThreads.indexOfKey(input) >= 0) { 4615 thread = (RecordThread *)mRecordThreads.valueFor(input).get(); 4616 } 4617 return thread; 4618} 4619 4620// nextUniqueId_l() must be called with AudioFlinger::mLock held 4621int AudioFlinger::nextUniqueId_l() 4622{ 4623 return mNextUniqueId++; 4624} 4625 4626// ---------------------------------------------------------------------------- 4627// Effect management 4628// ---------------------------------------------------------------------------- 4629 4630 4631status_t AudioFlinger::loadEffectLibrary(const char *libPath, int *handle) 4632{ 4633 // check calling permissions 4634 if (!settingsAllowed()) { 4635 return PERMISSION_DENIED; 4636 } 4637 // only allow libraries loaded from /system/lib/soundfx for now 4638 if (strncmp(gEffectLibPath, libPath, strlen(gEffectLibPath)) != 0) { 4639 return PERMISSION_DENIED; 4640 } 4641 4642 Mutex::Autolock _l(mLock); 4643 return EffectLoadLibrary(libPath, handle); 4644} 4645 4646status_t AudioFlinger::unloadEffectLibrary(int handle) 4647{ 4648 // check calling permissions 4649 if (!settingsAllowed()) { 4650 return PERMISSION_DENIED; 4651 } 4652 4653 Mutex::Autolock _l(mLock); 4654 return EffectUnloadLibrary(handle); 4655} 4656 4657status_t AudioFlinger::queryNumberEffects(uint32_t *numEffects) 4658{ 4659 Mutex::Autolock _l(mLock); 4660 return EffectQueryNumberEffects(numEffects); 4661} 4662 4663status_t AudioFlinger::queryEffect(uint32_t index, effect_descriptor_t *descriptor) 4664{ 4665 Mutex::Autolock _l(mLock); 4666 return EffectQueryEffect(index, descriptor); 4667} 4668 4669status_t AudioFlinger::getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor) 4670{ 4671 Mutex::Autolock _l(mLock); 4672 return EffectGetDescriptor(pUuid, descriptor); 4673} 4674 4675 4676// this UUID must match the one defined in media/libeffects/EffectVisualizer.cpp 4677static const effect_uuid_t VISUALIZATION_UUID_ = 4678 {0xd069d9e0, 0x8329, 0x11df, 0x9168, {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}}; 4679 4680sp<IEffect> AudioFlinger::createEffect(pid_t pid, 4681 effect_descriptor_t *pDesc, 4682 const sp<IEffectClient>& effectClient, 4683 int32_t priority, 4684 int output, 4685 int sessionId, 4686 status_t *status, 4687 int *id, 4688 int *enabled) 4689{ 4690 status_t lStatus = NO_ERROR; 4691 sp<EffectHandle> handle; 4692 effect_interface_t itfe; 4693 effect_descriptor_t desc; 4694 sp<Client> client; 4695 wp<Client> wclient; 4696 4697 LOGV("createEffect pid %d, client %p, priority %d, sessionId %d, output %d", 4698 pid, effectClient.get(), priority, sessionId, output); 4699 4700 if (pDesc == NULL) { 4701 lStatus = BAD_VALUE; 4702 goto Exit; 4703 } 4704 4705 // check audio settings permission for global effects 4706 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && !settingsAllowed()) { 4707 lStatus = PERMISSION_DENIED; 4708 goto Exit; 4709 } 4710 4711 // Session AUDIO_SESSION_OUTPUT_STAGE is reserved for output stage effects 4712 // that can only be created by audio policy manager (running in same process) 4713 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE && getpid() != pid) { 4714 lStatus = PERMISSION_DENIED; 4715 goto Exit; 4716 } 4717 4718 // check recording permission for visualizer 4719 if ((memcmp(&pDesc->type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0 || 4720 memcmp(&pDesc->uuid, &VISUALIZATION_UUID_, sizeof(effect_uuid_t)) == 0) && 4721 !recordingAllowed()) { 4722 lStatus = PERMISSION_DENIED; 4723 goto Exit; 4724 } 4725 4726 if (output == 0) { 4727 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE) { 4728 // output must be specified by AudioPolicyManager when using session 4729 // AUDIO_SESSION_OUTPUT_STAGE 4730 lStatus = BAD_VALUE; 4731 goto Exit; 4732 } else if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 4733 // if the output returned by getOutputForEffect() is removed before we lock the 4734 // mutex below, the call to checkPlaybackThread_l(output) below will detect it 4735 // and we will exit safely 4736 output = AudioSystem::getOutputForEffect(&desc); 4737 } 4738 } 4739 4740 { 4741 Mutex::Autolock _l(mLock); 4742 4743 4744 if (!EffectIsNullUuid(&pDesc->uuid)) { 4745 // if uuid is specified, request effect descriptor 4746 lStatus = EffectGetDescriptor(&pDesc->uuid, &desc); 4747 if (lStatus < 0) { 4748 LOGW("createEffect() error %d from EffectGetDescriptor", lStatus); 4749 goto Exit; 4750 } 4751 } else { 4752 // if uuid is not specified, look for an available implementation 4753 // of the required type in effect factory 4754 if (EffectIsNullUuid(&pDesc->type)) { 4755 LOGW("createEffect() no effect type"); 4756 lStatus = BAD_VALUE; 4757 goto Exit; 4758 } 4759 uint32_t numEffects = 0; 4760 effect_descriptor_t d; 4761 bool found = false; 4762 4763 lStatus = EffectQueryNumberEffects(&numEffects); 4764 if (lStatus < 0) { 4765 LOGW("createEffect() error %d from EffectQueryNumberEffects", lStatus); 4766 goto Exit; 4767 } 4768 for (uint32_t i = 0; i < numEffects; i++) { 4769 lStatus = EffectQueryEffect(i, &desc); 4770 if (lStatus < 0) { 4771 LOGW("createEffect() error %d from EffectQueryEffect", lStatus); 4772 continue; 4773 } 4774 if (memcmp(&desc.type, &pDesc->type, sizeof(effect_uuid_t)) == 0) { 4775 // If matching type found save effect descriptor. If the session is 4776 // 0 and the effect is not auxiliary, continue enumeration in case 4777 // an auxiliary version of this effect type is available 4778 found = true; 4779 memcpy(&d, &desc, sizeof(effect_descriptor_t)); 4780 if (sessionId != AUDIO_SESSION_OUTPUT_MIX || 4781 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 4782 break; 4783 } 4784 } 4785 } 4786 if (!found) { 4787 lStatus = BAD_VALUE; 4788 LOGW("createEffect() effect not found"); 4789 goto Exit; 4790 } 4791 // For same effect type, chose auxiliary version over insert version if 4792 // connect to output mix (Compliance to OpenSL ES) 4793 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && 4794 (d.flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_AUXILIARY) { 4795 memcpy(&desc, &d, sizeof(effect_descriptor_t)); 4796 } 4797 } 4798 4799 // Do not allow auxiliary effects on a session different from 0 (output mix) 4800 if (sessionId != AUDIO_SESSION_OUTPUT_MIX && 4801 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 4802 lStatus = INVALID_OPERATION; 4803 goto Exit; 4804 } 4805 4806 // return effect descriptor 4807 memcpy(pDesc, &desc, sizeof(effect_descriptor_t)); 4808 4809 // If output is not specified try to find a matching audio session ID in one of the 4810 // output threads. 4811 // If output is 0 here, sessionId is neither SESSION_OUTPUT_STAGE nor SESSION_OUTPUT_MIX 4812 // because of code checking output when entering the function. 4813 if (output == 0) { 4814 // look for the thread where the specified audio session is present 4815 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4816 if (mPlaybackThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 4817 output = mPlaybackThreads.keyAt(i); 4818 break; 4819 } 4820 } 4821 // If no output thread contains the requested session ID, default to 4822 // first output. The effect chain will be moved to the correct output 4823 // thread when a track with the same session ID is created 4824 if (output == 0 && mPlaybackThreads.size()) { 4825 output = mPlaybackThreads.keyAt(0); 4826 } 4827 } 4828 LOGV("createEffect() got output %d for effect %s", output, desc.name); 4829 PlaybackThread *thread = checkPlaybackThread_l(output); 4830 if (thread == NULL) { 4831 LOGE("createEffect() unknown output thread"); 4832 lStatus = BAD_VALUE; 4833 goto Exit; 4834 } 4835 4836 // TODO: allow attachment of effect to inputs 4837 4838 wclient = mClients.valueFor(pid); 4839 4840 if (wclient != NULL) { 4841 client = wclient.promote(); 4842 } else { 4843 client = new Client(this, pid); 4844 mClients.add(pid, client); 4845 } 4846 4847 // create effect on selected output trhead 4848 handle = thread->createEffect_l(client, effectClient, priority, sessionId, 4849 &desc, enabled, &lStatus); 4850 if (handle != 0 && id != NULL) { 4851 *id = handle->id(); 4852 } 4853 } 4854 4855Exit: 4856 if(status) { 4857 *status = lStatus; 4858 } 4859 return handle; 4860} 4861 4862status_t AudioFlinger::moveEffects(int session, int srcOutput, int dstOutput) 4863{ 4864 LOGV("moveEffects() session %d, srcOutput %d, dstOutput %d", 4865 session, srcOutput, dstOutput); 4866 Mutex::Autolock _l(mLock); 4867 if (srcOutput == dstOutput) { 4868 LOGW("moveEffects() same dst and src outputs %d", dstOutput); 4869 return NO_ERROR; 4870 } 4871 PlaybackThread *srcThread = checkPlaybackThread_l(srcOutput); 4872 if (srcThread == NULL) { 4873 LOGW("moveEffects() bad srcOutput %d", srcOutput); 4874 return BAD_VALUE; 4875 } 4876 PlaybackThread *dstThread = checkPlaybackThread_l(dstOutput); 4877 if (dstThread == NULL) { 4878 LOGW("moveEffects() bad dstOutput %d", dstOutput); 4879 return BAD_VALUE; 4880 } 4881 4882 Mutex::Autolock _dl(dstThread->mLock); 4883 Mutex::Autolock _sl(srcThread->mLock); 4884 moveEffectChain_l(session, srcThread, dstThread, false); 4885 4886 return NO_ERROR; 4887} 4888 4889// moveEffectChain_l mustbe called with both srcThread and dstThread mLocks held 4890status_t AudioFlinger::moveEffectChain_l(int session, 4891 AudioFlinger::PlaybackThread *srcThread, 4892 AudioFlinger::PlaybackThread *dstThread, 4893 bool reRegister) 4894{ 4895 LOGV("moveEffectChain_l() session %d from thread %p to thread %p", 4896 session, srcThread, dstThread); 4897 4898 sp<EffectChain> chain = srcThread->getEffectChain_l(session); 4899 if (chain == 0) { 4900 LOGW("moveEffectChain_l() effect chain for session %d not on source thread %p", 4901 session, srcThread); 4902 return INVALID_OPERATION; 4903 } 4904 4905 // remove chain first. This is useful only if reconfiguring effect chain on same output thread, 4906 // so that a new chain is created with correct parameters when first effect is added. This is 4907 // otherwise unecessary as removeEffect_l() will remove the chain when last effect is 4908 // removed. 4909 srcThread->removeEffectChain_l(chain); 4910 4911 // transfer all effects one by one so that new effect chain is created on new thread with 4912 // correct buffer sizes and audio parameters and effect engines reconfigured accordingly 4913 int dstOutput = dstThread->id(); 4914 sp<EffectChain> dstChain; 4915 uint32_t strategy; 4916 sp<EffectModule> effect = chain->getEffectFromId_l(0); 4917 while (effect != 0) { 4918 srcThread->removeEffect_l(effect); 4919 dstThread->addEffect_l(effect); 4920 // if the move request is not received from audio policy manager, the effect must be 4921 // re-registered with the new strategy and output 4922 if (dstChain == 0) { 4923 dstChain = effect->chain().promote(); 4924 if (dstChain == 0) { 4925 LOGW("moveEffectChain_l() cannot get chain from effect %p", effect.get()); 4926 srcThread->addEffect_l(effect); 4927 return NO_INIT; 4928 } 4929 strategy = dstChain->strategy(); 4930 } 4931 if (reRegister) { 4932 AudioSystem::unregisterEffect(effect->id()); 4933 AudioSystem::registerEffect(&effect->desc(), 4934 dstOutput, 4935 strategy, 4936 session, 4937 effect->id()); 4938 } 4939 effect = chain->getEffectFromId_l(0); 4940 } 4941 4942 return NO_ERROR; 4943} 4944 4945// PlaybackThread::createEffect_l() must be called with AudioFlinger::mLock held 4946sp<AudioFlinger::EffectHandle> AudioFlinger::PlaybackThread::createEffect_l( 4947 const sp<AudioFlinger::Client>& client, 4948 const sp<IEffectClient>& effectClient, 4949 int32_t priority, 4950 int sessionId, 4951 effect_descriptor_t *desc, 4952 int *enabled, 4953 status_t *status 4954 ) 4955{ 4956 sp<EffectModule> effect; 4957 sp<EffectHandle> handle; 4958 status_t lStatus; 4959 sp<Track> track; 4960 sp<EffectChain> chain; 4961 bool chainCreated = false; 4962 bool effectCreated = false; 4963 bool effectRegistered = false; 4964 4965 if (mOutput == 0) { 4966 LOGW("createEffect_l() Audio driver not initialized."); 4967 lStatus = NO_INIT; 4968 goto Exit; 4969 } 4970 4971 // Do not allow auxiliary effect on session other than 0 4972 if ((desc->flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY && 4973 sessionId != AUDIO_SESSION_OUTPUT_MIX) { 4974 LOGW("createEffect_l() Cannot add auxiliary effect %s to session %d", 4975 desc->name, sessionId); 4976 lStatus = BAD_VALUE; 4977 goto Exit; 4978 } 4979 4980 // Do not allow effects with session ID 0 on direct output or duplicating threads 4981 // TODO: add rule for hw accelerated effects on direct outputs with non PCM format 4982 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && mType != MIXER) { 4983 LOGW("createEffect_l() Cannot add auxiliary effect %s to session %d", 4984 desc->name, sessionId); 4985 lStatus = BAD_VALUE; 4986 goto Exit; 4987 } 4988 4989 LOGV("createEffect_l() thread %p effect %s on session %d", this, desc->name, sessionId); 4990 4991 { // scope for mLock 4992 Mutex::Autolock _l(mLock); 4993 4994 // check for existing effect chain with the requested audio session 4995 chain = getEffectChain_l(sessionId); 4996 if (chain == 0) { 4997 // create a new chain for this session 4998 LOGV("createEffect_l() new effect chain for session %d", sessionId); 4999 chain = new EffectChain(this, sessionId); 5000 addEffectChain_l(chain); 5001 chain->setStrategy(getStrategyForSession_l(sessionId)); 5002 chainCreated = true; 5003 } else { 5004 effect = chain->getEffectFromDesc_l(desc); 5005 } 5006 5007 LOGV("createEffect_l() got effect %p on chain %p", effect == 0 ? 0 : effect.get(), chain.get()); 5008 5009 if (effect == 0) { 5010 int id = mAudioFlinger->nextUniqueId_l(); 5011 // Check CPU and memory usage 5012 lStatus = AudioSystem::registerEffect(desc, mId, chain->strategy(), sessionId, id); 5013 if (lStatus != NO_ERROR) { 5014 goto Exit; 5015 } 5016 effectRegistered = true; 5017 // create a new effect module if none present in the chain 5018 effect = new EffectModule(this, chain, desc, id, sessionId); 5019 lStatus = effect->status(); 5020 if (lStatus != NO_ERROR) { 5021 goto Exit; 5022 } 5023 lStatus = chain->addEffect_l(effect); 5024 if (lStatus != NO_ERROR) { 5025 goto Exit; 5026 } 5027 effectCreated = true; 5028 5029 effect->setDevice(mDevice); 5030 effect->setMode(mAudioFlinger->getMode()); 5031 } 5032 // create effect handle and connect it to effect module 5033 handle = new EffectHandle(effect, client, effectClient, priority); 5034 lStatus = effect->addHandle(handle); 5035 if (enabled) { 5036 *enabled = (int)effect->isEnabled(); 5037 } 5038 } 5039 5040Exit: 5041 if (lStatus != NO_ERROR && lStatus != ALREADY_EXISTS) { 5042 Mutex::Autolock _l(mLock); 5043 if (effectCreated) { 5044 chain->removeEffect_l(effect); 5045 } 5046 if (effectRegistered) { 5047 AudioSystem::unregisterEffect(effect->id()); 5048 } 5049 if (chainCreated) { 5050 removeEffectChain_l(chain); 5051 } 5052 handle.clear(); 5053 } 5054 5055 if(status) { 5056 *status = lStatus; 5057 } 5058 return handle; 5059} 5060 5061// PlaybackThread::addEffect_l() must be called with AudioFlinger::mLock and 5062// PlaybackThread::mLock held 5063status_t AudioFlinger::PlaybackThread::addEffect_l(const sp<EffectModule>& effect) 5064{ 5065 // check for existing effect chain with the requested audio session 5066 int sessionId = effect->sessionId(); 5067 sp<EffectChain> chain = getEffectChain_l(sessionId); 5068 bool chainCreated = false; 5069 5070 if (chain == 0) { 5071 // create a new chain for this session 5072 LOGV("addEffect_l() new effect chain for session %d", sessionId); 5073 chain = new EffectChain(this, sessionId); 5074 addEffectChain_l(chain); 5075 chain->setStrategy(getStrategyForSession_l(sessionId)); 5076 chainCreated = true; 5077 } 5078 LOGV("addEffect_l() %p chain %p effect %p", this, chain.get(), effect.get()); 5079 5080 if (chain->getEffectFromId_l(effect->id()) != 0) { 5081 LOGW("addEffect_l() %p effect %s already present in chain %p", 5082 this, effect->desc().name, chain.get()); 5083 return BAD_VALUE; 5084 } 5085 5086 status_t status = chain->addEffect_l(effect); 5087 if (status != NO_ERROR) { 5088 if (chainCreated) { 5089 removeEffectChain_l(chain); 5090 } 5091 return status; 5092 } 5093 5094 effect->setDevice(mDevice); 5095 effect->setMode(mAudioFlinger->getMode()); 5096 return NO_ERROR; 5097} 5098 5099void AudioFlinger::PlaybackThread::removeEffect_l(const sp<EffectModule>& effect) { 5100 5101 LOGV("removeEffect_l() %p effect %p", this, effect.get()); 5102 effect_descriptor_t desc = effect->desc(); 5103 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5104 detachAuxEffect_l(effect->id()); 5105 } 5106 5107 sp<EffectChain> chain = effect->chain().promote(); 5108 if (chain != 0) { 5109 // remove effect chain if removing last effect 5110 if (chain->removeEffect_l(effect) == 0) { 5111 removeEffectChain_l(chain); 5112 } 5113 } else { 5114 LOGW("removeEffect_l() %p cannot promote chain for effect %p", this, effect.get()); 5115 } 5116} 5117 5118void AudioFlinger::PlaybackThread::disconnectEffect(const sp<EffectModule>& effect, 5119 const wp<EffectHandle>& handle) { 5120 Mutex::Autolock _l(mLock); 5121 LOGV("disconnectEffect() %p effect %p", this, effect.get()); 5122 // delete the effect module if removing last handle on it 5123 if (effect->removeHandle(handle) == 0) { 5124 removeEffect_l(effect); 5125 AudioSystem::unregisterEffect(effect->id()); 5126 } 5127} 5128 5129status_t AudioFlinger::PlaybackThread::addEffectChain_l(const sp<EffectChain>& chain) 5130{ 5131 int session = chain->sessionId(); 5132 int16_t *buffer = mMixBuffer; 5133 bool ownsBuffer = false; 5134 5135 LOGV("addEffectChain_l() %p on thread %p for session %d", chain.get(), this, session); 5136 if (session > 0) { 5137 // Only one effect chain can be present in direct output thread and it uses 5138 // the mix buffer as input 5139 if (mType != DIRECT) { 5140 size_t numSamples = mFrameCount * mChannelCount; 5141 buffer = new int16_t[numSamples]; 5142 memset(buffer, 0, numSamples * sizeof(int16_t)); 5143 LOGV("addEffectChain_l() creating new input buffer %p session %d", buffer, session); 5144 ownsBuffer = true; 5145 } 5146 5147 // Attach all tracks with same session ID to this chain. 5148 for (size_t i = 0; i < mTracks.size(); ++i) { 5149 sp<Track> track = mTracks[i]; 5150 if (session == track->sessionId()) { 5151 LOGV("addEffectChain_l() track->setMainBuffer track %p buffer %p", track.get(), buffer); 5152 track->setMainBuffer(buffer); 5153 } 5154 } 5155 5156 // indicate all active tracks in the chain 5157 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5158 sp<Track> track = mActiveTracks[i].promote(); 5159 if (track == 0) continue; 5160 if (session == track->sessionId()) { 5161 LOGV("addEffectChain_l() activating track %p on session %d", track.get(), session); 5162 chain->startTrack(); 5163 } 5164 } 5165 } 5166 5167 chain->setInBuffer(buffer, ownsBuffer); 5168 chain->setOutBuffer(mMixBuffer); 5169 // Effect chain for session AUDIO_SESSION_OUTPUT_STAGE is inserted at end of effect 5170 // chains list in order to be processed last as it contains output stage effects 5171 // Effect chain for session AUDIO_SESSION_OUTPUT_MIX is inserted before 5172 // session AUDIO_SESSION_OUTPUT_STAGE to be processed 5173 // after track specific effects and before output stage 5174 // It is therefore mandatory that AUDIO_SESSION_OUTPUT_MIX == 0 and 5175 // that AUDIO_SESSION_OUTPUT_STAGE < AUDIO_SESSION_OUTPUT_MIX 5176 // Effect chain for other sessions are inserted at beginning of effect 5177 // chains list to be processed before output mix effects. Relative order between other 5178 // sessions is not important 5179 size_t size = mEffectChains.size(); 5180 size_t i = 0; 5181 for (i = 0; i < size; i++) { 5182 if (mEffectChains[i]->sessionId() < session) break; 5183 } 5184 mEffectChains.insertAt(chain, i); 5185 5186 return NO_ERROR; 5187} 5188 5189size_t AudioFlinger::PlaybackThread::removeEffectChain_l(const sp<EffectChain>& chain) 5190{ 5191 int session = chain->sessionId(); 5192 5193 LOGV("removeEffectChain_l() %p from thread %p for session %d", chain.get(), this, session); 5194 5195 for (size_t i = 0; i < mEffectChains.size(); i++) { 5196 if (chain == mEffectChains[i]) { 5197 mEffectChains.removeAt(i); 5198 // detach all tracks with same session ID from this chain 5199 for (size_t i = 0; i < mTracks.size(); ++i) { 5200 sp<Track> track = mTracks[i]; 5201 if (session == track->sessionId()) { 5202 track->setMainBuffer(mMixBuffer); 5203 } 5204 } 5205 break; 5206 } 5207 } 5208 return mEffectChains.size(); 5209} 5210 5211void AudioFlinger::PlaybackThread::lockEffectChains_l( 5212 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5213{ 5214 effectChains = mEffectChains; 5215 for (size_t i = 0; i < mEffectChains.size(); i++) { 5216 mEffectChains[i]->lock(); 5217 } 5218} 5219 5220void AudioFlinger::PlaybackThread::unlockEffectChains( 5221 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5222{ 5223 for (size_t i = 0; i < effectChains.size(); i++) { 5224 effectChains[i]->unlock(); 5225 } 5226} 5227 5228 5229sp<AudioFlinger::EffectModule> AudioFlinger::PlaybackThread::getEffect_l(int sessionId, int effectId) 5230{ 5231 sp<EffectModule> effect; 5232 5233 sp<EffectChain> chain = getEffectChain_l(sessionId); 5234 if (chain != 0) { 5235 effect = chain->getEffectFromId_l(effectId); 5236 } 5237 return effect; 5238} 5239 5240status_t AudioFlinger::PlaybackThread::attachAuxEffect( 5241 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5242{ 5243 Mutex::Autolock _l(mLock); 5244 return attachAuxEffect_l(track, EffectId); 5245} 5246 5247status_t AudioFlinger::PlaybackThread::attachAuxEffect_l( 5248 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5249{ 5250 status_t status = NO_ERROR; 5251 5252 if (EffectId == 0) { 5253 track->setAuxBuffer(0, NULL); 5254 } else { 5255 // Auxiliary effects are always in audio session AUDIO_SESSION_OUTPUT_MIX 5256 sp<EffectModule> effect = getEffect_l(AUDIO_SESSION_OUTPUT_MIX, EffectId); 5257 if (effect != 0) { 5258 if ((effect->desc().flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5259 track->setAuxBuffer(EffectId, (int32_t *)effect->inBuffer()); 5260 } else { 5261 status = INVALID_OPERATION; 5262 } 5263 } else { 5264 status = BAD_VALUE; 5265 } 5266 } 5267 return status; 5268} 5269 5270void AudioFlinger::PlaybackThread::detachAuxEffect_l(int effectId) 5271{ 5272 for (size_t i = 0; i < mTracks.size(); ++i) { 5273 sp<Track> track = mTracks[i]; 5274 if (track->auxEffectId() == effectId) { 5275 attachAuxEffect_l(track, 0); 5276 } 5277 } 5278} 5279 5280// ---------------------------------------------------------------------------- 5281// EffectModule implementation 5282// ---------------------------------------------------------------------------- 5283 5284#undef LOG_TAG 5285#define LOG_TAG "AudioFlinger::EffectModule" 5286 5287AudioFlinger::EffectModule::EffectModule(const wp<ThreadBase>& wThread, 5288 const wp<AudioFlinger::EffectChain>& chain, 5289 effect_descriptor_t *desc, 5290 int id, 5291 int sessionId) 5292 : mThread(wThread), mChain(chain), mId(id), mSessionId(sessionId), mEffectInterface(NULL), 5293 mStatus(NO_INIT), mState(IDLE) 5294{ 5295 LOGV("Constructor %p", this); 5296 int lStatus; 5297 sp<ThreadBase> thread = mThread.promote(); 5298 if (thread == 0) { 5299 return; 5300 } 5301 PlaybackThread *p = (PlaybackThread *)thread.get(); 5302 5303 memcpy(&mDescriptor, desc, sizeof(effect_descriptor_t)); 5304 5305 // create effect engine from effect factory 5306 mStatus = EffectCreate(&desc->uuid, sessionId, p->id(), &mEffectInterface); 5307 5308 if (mStatus != NO_ERROR) { 5309 return; 5310 } 5311 lStatus = init(); 5312 if (lStatus < 0) { 5313 mStatus = lStatus; 5314 goto Error; 5315 } 5316 5317 LOGV("Constructor success name %s, Interface %p", mDescriptor.name, mEffectInterface); 5318 return; 5319Error: 5320 EffectRelease(mEffectInterface); 5321 mEffectInterface = NULL; 5322 LOGV("Constructor Error %d", mStatus); 5323} 5324 5325AudioFlinger::EffectModule::~EffectModule() 5326{ 5327 LOGV("Destructor %p", this); 5328 if (mEffectInterface != NULL) { 5329 // release effect engine 5330 EffectRelease(mEffectInterface); 5331 } 5332} 5333 5334status_t AudioFlinger::EffectModule::addHandle(sp<EffectHandle>& handle) 5335{ 5336 status_t status; 5337 5338 Mutex::Autolock _l(mLock); 5339 // First handle in mHandles has highest priority and controls the effect module 5340 int priority = handle->priority(); 5341 size_t size = mHandles.size(); 5342 sp<EffectHandle> h; 5343 size_t i; 5344 for (i = 0; i < size; i++) { 5345 h = mHandles[i].promote(); 5346 if (h == 0) continue; 5347 if (h->priority() <= priority) break; 5348 } 5349 // if inserted in first place, move effect control from previous owner to this handle 5350 if (i == 0) { 5351 if (h != 0) { 5352 h->setControl(false, true); 5353 } 5354 handle->setControl(true, false); 5355 status = NO_ERROR; 5356 } else { 5357 status = ALREADY_EXISTS; 5358 } 5359 mHandles.insertAt(handle, i); 5360 return status; 5361} 5362 5363size_t AudioFlinger::EffectModule::removeHandle(const wp<EffectHandle>& handle) 5364{ 5365 Mutex::Autolock _l(mLock); 5366 size_t size = mHandles.size(); 5367 size_t i; 5368 for (i = 0; i < size; i++) { 5369 if (mHandles[i] == handle) break; 5370 } 5371 if (i == size) { 5372 return size; 5373 } 5374 mHandles.removeAt(i); 5375 size = mHandles.size(); 5376 // if removed from first place, move effect control from this handle to next in line 5377 if (i == 0 && size != 0) { 5378 sp<EffectHandle> h = mHandles[0].promote(); 5379 if (h != 0) { 5380 h->setControl(true, true); 5381 } 5382 } 5383 5384 // Release effect engine here so that it is done immediately. Otherwise it will be released 5385 // by the destructor when the last strong reference on the this object is released which can 5386 // happen after next process is called on this effect. 5387 if (size == 0 && mEffectInterface != NULL) { 5388 // release effect engine 5389 EffectRelease(mEffectInterface); 5390 mEffectInterface = NULL; 5391 } 5392 5393 return size; 5394} 5395 5396void AudioFlinger::EffectModule::disconnect(const wp<EffectHandle>& handle) 5397{ 5398 // keep a strong reference on this EffectModule to avoid calling the 5399 // destructor before we exit 5400 sp<EffectModule> keep(this); 5401 { 5402 sp<ThreadBase> thread = mThread.promote(); 5403 if (thread != 0) { 5404 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 5405 playbackThread->disconnectEffect(keep, handle); 5406 } 5407 } 5408} 5409 5410void AudioFlinger::EffectModule::updateState() { 5411 Mutex::Autolock _l(mLock); 5412 5413 switch (mState) { 5414 case RESTART: 5415 reset_l(); 5416 // FALL THROUGH 5417 5418 case STARTING: 5419 // clear auxiliary effect input buffer for next accumulation 5420 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5421 memset(mConfig.inputCfg.buffer.raw, 5422 0, 5423 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 5424 } 5425 start_l(); 5426 mState = ACTIVE; 5427 break; 5428 case STOPPING: 5429 stop_l(); 5430 mDisableWaitCnt = mMaxDisableWaitCnt; 5431 mState = STOPPED; 5432 break; 5433 case STOPPED: 5434 // mDisableWaitCnt is forced to 1 by process() when the engine indicates the end of the 5435 // turn off sequence. 5436 if (--mDisableWaitCnt == 0) { 5437 reset_l(); 5438 mState = IDLE; 5439 } 5440 break; 5441 default: //IDLE , ACTIVE 5442 break; 5443 } 5444} 5445 5446void AudioFlinger::EffectModule::process() 5447{ 5448 Mutex::Autolock _l(mLock); 5449 5450 if (mEffectInterface == NULL || 5451 mConfig.inputCfg.buffer.raw == NULL || 5452 mConfig.outputCfg.buffer.raw == NULL) { 5453 return; 5454 } 5455 5456 if (isProcessEnabled()) { 5457 // do 32 bit to 16 bit conversion for auxiliary effect input buffer 5458 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5459 AudioMixer::ditherAndClamp(mConfig.inputCfg.buffer.s32, 5460 mConfig.inputCfg.buffer.s32, 5461 mConfig.inputCfg.buffer.frameCount/2); 5462 } 5463 5464 // do the actual processing in the effect engine 5465 int ret = (*mEffectInterface)->process(mEffectInterface, 5466 &mConfig.inputCfg.buffer, 5467 &mConfig.outputCfg.buffer); 5468 5469 // force transition to IDLE state when engine is ready 5470 if (mState == STOPPED && ret == -ENODATA) { 5471 mDisableWaitCnt = 1; 5472 } 5473 5474 // clear auxiliary effect input buffer for next accumulation 5475 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5476 memset(mConfig.inputCfg.buffer.raw, 0, 5477 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 5478 } 5479 } else if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_INSERT && 5480 mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 5481 // If an insert effect is idle and input buffer is different from output buffer, 5482 // accumulate input onto output 5483 sp<EffectChain> chain = mChain.promote(); 5484 if (chain != 0 && chain->activeTracks() != 0) { 5485 size_t frameCnt = mConfig.inputCfg.buffer.frameCount * 2; //always stereo here 5486 int16_t *in = mConfig.inputCfg.buffer.s16; 5487 int16_t *out = mConfig.outputCfg.buffer.s16; 5488 for (size_t i = 0; i < frameCnt; i++) { 5489 out[i] = clamp16((int32_t)out[i] + (int32_t)in[i]); 5490 } 5491 } 5492 } 5493} 5494 5495void AudioFlinger::EffectModule::reset_l() 5496{ 5497 if (mEffectInterface == NULL) { 5498 return; 5499 } 5500 (*mEffectInterface)->command(mEffectInterface, EFFECT_CMD_RESET, 0, NULL, 0, NULL); 5501} 5502 5503status_t AudioFlinger::EffectModule::configure() 5504{ 5505 uint32_t channels; 5506 if (mEffectInterface == NULL) { 5507 return NO_INIT; 5508 } 5509 5510 sp<ThreadBase> thread = mThread.promote(); 5511 if (thread == 0) { 5512 return DEAD_OBJECT; 5513 } 5514 5515 // TODO: handle configuration of effects replacing track process 5516 if (thread->channelCount() == 1) { 5517 channels = CHANNEL_MONO; 5518 } else { 5519 channels = CHANNEL_STEREO; 5520 } 5521 5522 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5523 mConfig.inputCfg.channels = CHANNEL_MONO; 5524 } else { 5525 mConfig.inputCfg.channels = channels; 5526 } 5527 mConfig.outputCfg.channels = channels; 5528 mConfig.inputCfg.format = SAMPLE_FORMAT_PCM_S15; 5529 mConfig.outputCfg.format = SAMPLE_FORMAT_PCM_S15; 5530 mConfig.inputCfg.samplingRate = thread->sampleRate(); 5531 mConfig.outputCfg.samplingRate = mConfig.inputCfg.samplingRate; 5532 mConfig.inputCfg.bufferProvider.cookie = NULL; 5533 mConfig.inputCfg.bufferProvider.getBuffer = NULL; 5534 mConfig.inputCfg.bufferProvider.releaseBuffer = NULL; 5535 mConfig.outputCfg.bufferProvider.cookie = NULL; 5536 mConfig.outputCfg.bufferProvider.getBuffer = NULL; 5537 mConfig.outputCfg.bufferProvider.releaseBuffer = NULL; 5538 mConfig.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ; 5539 // Insert effect: 5540 // - in session AUDIO_SESSION_OUTPUT_MIX or AUDIO_SESSION_OUTPUT_STAGE, 5541 // always overwrites output buffer: input buffer == output buffer 5542 // - in other sessions: 5543 // last effect in the chain accumulates in output buffer: input buffer != output buffer 5544 // other effect: overwrites output buffer: input buffer == output buffer 5545 // Auxiliary effect: 5546 // accumulates in output buffer: input buffer != output buffer 5547 // Therefore: accumulate <=> input buffer != output buffer 5548 if (mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 5549 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE; 5550 } else { 5551 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_WRITE; 5552 } 5553 mConfig.inputCfg.mask = EFFECT_CONFIG_ALL; 5554 mConfig.outputCfg.mask = EFFECT_CONFIG_ALL; 5555 mConfig.inputCfg.buffer.frameCount = thread->frameCount(); 5556 mConfig.outputCfg.buffer.frameCount = mConfig.inputCfg.buffer.frameCount; 5557 5558 LOGV("configure() %p thread %p buffer %p framecount %d", 5559 this, thread.get(), mConfig.inputCfg.buffer.raw, mConfig.inputCfg.buffer.frameCount); 5560 5561 status_t cmdStatus; 5562 uint32_t size = sizeof(int); 5563 status_t status = (*mEffectInterface)->command(mEffectInterface, 5564 EFFECT_CMD_CONFIGURE, 5565 sizeof(effect_config_t), 5566 &mConfig, 5567 &size, 5568 &cmdStatus); 5569 if (status == 0) { 5570 status = cmdStatus; 5571 } 5572 5573 mMaxDisableWaitCnt = (MAX_DISABLE_TIME_MS * mConfig.outputCfg.samplingRate) / 5574 (1000 * mConfig.outputCfg.buffer.frameCount); 5575 5576 return status; 5577} 5578 5579status_t AudioFlinger::EffectModule::init() 5580{ 5581 Mutex::Autolock _l(mLock); 5582 if (mEffectInterface == NULL) { 5583 return NO_INIT; 5584 } 5585 status_t cmdStatus; 5586 uint32_t size = sizeof(status_t); 5587 status_t status = (*mEffectInterface)->command(mEffectInterface, 5588 EFFECT_CMD_INIT, 5589 0, 5590 NULL, 5591 &size, 5592 &cmdStatus); 5593 if (status == 0) { 5594 status = cmdStatus; 5595 } 5596 return status; 5597} 5598 5599status_t AudioFlinger::EffectModule::start_l() 5600{ 5601 if (mEffectInterface == NULL) { 5602 return NO_INIT; 5603 } 5604 status_t cmdStatus; 5605 uint32_t size = sizeof(status_t); 5606 status_t status = (*mEffectInterface)->command(mEffectInterface, 5607 EFFECT_CMD_ENABLE, 5608 0, 5609 NULL, 5610 &size, 5611 &cmdStatus); 5612 if (status == 0) { 5613 status = cmdStatus; 5614 } 5615 return status; 5616} 5617 5618status_t AudioFlinger::EffectModule::stop_l() 5619{ 5620 if (mEffectInterface == NULL) { 5621 return NO_INIT; 5622 } 5623 status_t cmdStatus; 5624 uint32_t size = sizeof(status_t); 5625 status_t status = (*mEffectInterface)->command(mEffectInterface, 5626 EFFECT_CMD_DISABLE, 5627 0, 5628 NULL, 5629 &size, 5630 &cmdStatus); 5631 if (status == 0) { 5632 status = cmdStatus; 5633 } 5634 return status; 5635} 5636 5637status_t AudioFlinger::EffectModule::command(uint32_t cmdCode, 5638 uint32_t cmdSize, 5639 void *pCmdData, 5640 uint32_t *replySize, 5641 void *pReplyData) 5642{ 5643 Mutex::Autolock _l(mLock); 5644// LOGV("command(), cmdCode: %d, mEffectInterface: %p", cmdCode, mEffectInterface); 5645 5646 if (mEffectInterface == NULL) { 5647 return NO_INIT; 5648 } 5649 status_t status = (*mEffectInterface)->command(mEffectInterface, 5650 cmdCode, 5651 cmdSize, 5652 pCmdData, 5653 replySize, 5654 pReplyData); 5655 if (cmdCode != EFFECT_CMD_GET_PARAM && status == NO_ERROR) { 5656 uint32_t size = (replySize == NULL) ? 0 : *replySize; 5657 for (size_t i = 1; i < mHandles.size(); i++) { 5658 sp<EffectHandle> h = mHandles[i].promote(); 5659 if (h != 0) { 5660 h->commandExecuted(cmdCode, cmdSize, pCmdData, size, pReplyData); 5661 } 5662 } 5663 } 5664 return status; 5665} 5666 5667status_t AudioFlinger::EffectModule::setEnabled(bool enabled) 5668{ 5669 Mutex::Autolock _l(mLock); 5670 LOGV("setEnabled %p enabled %d", this, enabled); 5671 5672 if (enabled != isEnabled()) { 5673 switch (mState) { 5674 // going from disabled to enabled 5675 case IDLE: 5676 mState = STARTING; 5677 break; 5678 case STOPPED: 5679 mState = RESTART; 5680 break; 5681 case STOPPING: 5682 mState = ACTIVE; 5683 break; 5684 5685 // going from enabled to disabled 5686 case RESTART: 5687 mState = STOPPED; 5688 break; 5689 case STARTING: 5690 mState = IDLE; 5691 break; 5692 case ACTIVE: 5693 mState = STOPPING; 5694 break; 5695 } 5696 for (size_t i = 1; i < mHandles.size(); i++) { 5697 sp<EffectHandle> h = mHandles[i].promote(); 5698 if (h != 0) { 5699 h->setEnabled(enabled); 5700 } 5701 } 5702 } 5703 return NO_ERROR; 5704} 5705 5706bool AudioFlinger::EffectModule::isEnabled() 5707{ 5708 switch (mState) { 5709 case RESTART: 5710 case STARTING: 5711 case ACTIVE: 5712 return true; 5713 case IDLE: 5714 case STOPPING: 5715 case STOPPED: 5716 default: 5717 return false; 5718 } 5719} 5720 5721bool AudioFlinger::EffectModule::isProcessEnabled() 5722{ 5723 switch (mState) { 5724 case RESTART: 5725 case ACTIVE: 5726 case STOPPING: 5727 case STOPPED: 5728 return true; 5729 case IDLE: 5730 case STARTING: 5731 default: 5732 return false; 5733 } 5734} 5735 5736status_t AudioFlinger::EffectModule::setVolume(uint32_t *left, uint32_t *right, bool controller) 5737{ 5738 Mutex::Autolock _l(mLock); 5739 status_t status = NO_ERROR; 5740 5741 // Send volume indication if EFFECT_FLAG_VOLUME_IND is set and read back altered volume 5742 // if controller flag is set (Note that controller == TRUE => EFFECT_FLAG_VOLUME_CTRL set) 5743 if (isProcessEnabled() && 5744 ((mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL || 5745 (mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_IND)) { 5746 status_t cmdStatus; 5747 uint32_t volume[2]; 5748 uint32_t *pVolume = NULL; 5749 uint32_t size = sizeof(volume); 5750 volume[0] = *left; 5751 volume[1] = *right; 5752 if (controller) { 5753 pVolume = volume; 5754 } 5755 status = (*mEffectInterface)->command(mEffectInterface, 5756 EFFECT_CMD_SET_VOLUME, 5757 size, 5758 volume, 5759 &size, 5760 pVolume); 5761 if (controller && status == NO_ERROR && size == sizeof(volume)) { 5762 *left = volume[0]; 5763 *right = volume[1]; 5764 } 5765 } 5766 return status; 5767} 5768 5769status_t AudioFlinger::EffectModule::setDevice(uint32_t device) 5770{ 5771 Mutex::Autolock _l(mLock); 5772 status_t status = NO_ERROR; 5773 if ((mDescriptor.flags & EFFECT_FLAG_DEVICE_MASK) == EFFECT_FLAG_DEVICE_IND) { 5774 // convert device bit field from AudioSystem to EffectApi format. 5775 device = deviceAudioSystemToEffectApi(device); 5776 if (device == 0) { 5777 return BAD_VALUE; 5778 } 5779 status_t cmdStatus; 5780 uint32_t size = sizeof(status_t); 5781 status = (*mEffectInterface)->command(mEffectInterface, 5782 EFFECT_CMD_SET_DEVICE, 5783 sizeof(uint32_t), 5784 &device, 5785 &size, 5786 &cmdStatus); 5787 if (status == NO_ERROR) { 5788 status = cmdStatus; 5789 } 5790 } 5791 return status; 5792} 5793 5794status_t AudioFlinger::EffectModule::setMode(uint32_t mode) 5795{ 5796 Mutex::Autolock _l(mLock); 5797 status_t status = NO_ERROR; 5798 if ((mDescriptor.flags & EFFECT_FLAG_AUDIO_MODE_MASK) == EFFECT_FLAG_AUDIO_MODE_IND) { 5799 // convert audio mode from AudioSystem to EffectApi format. 5800 int effectMode = modeAudioSystemToEffectApi(mode); 5801 if (effectMode < 0) { 5802 return BAD_VALUE; 5803 } 5804 status_t cmdStatus; 5805 uint32_t size = sizeof(status_t); 5806 status = (*mEffectInterface)->command(mEffectInterface, 5807 EFFECT_CMD_SET_AUDIO_MODE, 5808 sizeof(int), 5809 &effectMode, 5810 &size, 5811 &cmdStatus); 5812 if (status == NO_ERROR) { 5813 status = cmdStatus; 5814 } 5815 } 5816 return status; 5817} 5818 5819// update this table when AudioSystem::audio_devices or audio_device_e (in EffectApi.h) are modified 5820const uint32_t AudioFlinger::EffectModule::sDeviceConvTable[] = { 5821 DEVICE_EARPIECE, // AUDIO_DEVICE_OUT_EARPIECE 5822 DEVICE_SPEAKER, // AUDIO_DEVICE_OUT_SPEAKER 5823 DEVICE_WIRED_HEADSET, // case AUDIO_DEVICE_OUT_WIRED_HEADSET 5824 DEVICE_WIRED_HEADPHONE, // AUDIO_DEVICE_OUT_WIRED_HEADPHONE 5825 DEVICE_BLUETOOTH_SCO, // AUDIO_DEVICE_OUT_BLUETOOTH_SCO 5826 DEVICE_BLUETOOTH_SCO_HEADSET, // AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET 5827 DEVICE_BLUETOOTH_SCO_CARKIT, // AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT 5828 DEVICE_BLUETOOTH_A2DP, // AUDIO_DEVICE_OUT_BLUETOOTH_A2DP 5829 DEVICE_BLUETOOTH_A2DP_HEADPHONES, // AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES 5830 DEVICE_BLUETOOTH_A2DP_SPEAKER, // AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER 5831 DEVICE_AUX_DIGITAL // AUDIO_DEVICE_OUT_AUX_DIGITAL 5832}; 5833 5834uint32_t AudioFlinger::EffectModule::deviceAudioSystemToEffectApi(uint32_t device) 5835{ 5836 uint32_t deviceOut = 0; 5837 while (device) { 5838 const uint32_t i = 31 - __builtin_clz(device); 5839 device &= ~(1 << i); 5840 if (i >= sizeof(sDeviceConvTable)/sizeof(uint32_t)) { 5841 LOGE("device conversion error for AudioSystem device 0x%08x", device); 5842 return 0; 5843 } 5844 deviceOut |= (uint32_t)sDeviceConvTable[i]; 5845 } 5846 return deviceOut; 5847} 5848 5849// update this table when AudioSystem::audio_mode or audio_mode_e (in EffectApi.h) are modified 5850const uint32_t AudioFlinger::EffectModule::sModeConvTable[] = { 5851 AUDIO_EFFECT_MODE_NORMAL, // AUDIO_MODE_NORMAL 5852 AUDIO_EFFECT_MODE_RINGTONE, // AUDIO_MODE_RINGTONE 5853 AUDIO_EFFECT_MODE_IN_CALL, // AUDIO_MODE_IN_CALL 5854 AUDIO_EFFECT_MODE_IN_CALL // AUDIO_MODE_IN_COMMUNICATION, same conversion as for AUDIO_MODE_IN_CALL 5855}; 5856 5857int AudioFlinger::EffectModule::modeAudioSystemToEffectApi(uint32_t mode) 5858{ 5859 int modeOut = -1; 5860 if (mode < sizeof(sModeConvTable) / sizeof(uint32_t)) { 5861 modeOut = (int)sModeConvTable[mode]; 5862 } 5863 return modeOut; 5864} 5865 5866status_t AudioFlinger::EffectModule::dump(int fd, const Vector<String16>& args) 5867{ 5868 const size_t SIZE = 256; 5869 char buffer[SIZE]; 5870 String8 result; 5871 5872 snprintf(buffer, SIZE, "\tEffect ID %d:\n", mId); 5873 result.append(buffer); 5874 5875 bool locked = tryLock(mLock); 5876 // failed to lock - AudioFlinger is probably deadlocked 5877 if (!locked) { 5878 result.append("\t\tCould not lock Fx mutex:\n"); 5879 } 5880 5881 result.append("\t\tSession Status State Engine:\n"); 5882 snprintf(buffer, SIZE, "\t\t%05d %03d %03d 0x%08x\n", 5883 mSessionId, mStatus, mState, (uint32_t)mEffectInterface); 5884 result.append(buffer); 5885 5886 result.append("\t\tDescriptor:\n"); 5887 snprintf(buffer, SIZE, "\t\t- UUID: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 5888 mDescriptor.uuid.timeLow, mDescriptor.uuid.timeMid, mDescriptor.uuid.timeHiAndVersion, 5889 mDescriptor.uuid.clockSeq, mDescriptor.uuid.node[0], mDescriptor.uuid.node[1],mDescriptor.uuid.node[2], 5890 mDescriptor.uuid.node[3],mDescriptor.uuid.node[4],mDescriptor.uuid.node[5]); 5891 result.append(buffer); 5892 snprintf(buffer, SIZE, "\t\t- TYPE: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 5893 mDescriptor.type.timeLow, mDescriptor.type.timeMid, mDescriptor.type.timeHiAndVersion, 5894 mDescriptor.type.clockSeq, mDescriptor.type.node[0], mDescriptor.type.node[1],mDescriptor.type.node[2], 5895 mDescriptor.type.node[3],mDescriptor.type.node[4],mDescriptor.type.node[5]); 5896 result.append(buffer); 5897 snprintf(buffer, SIZE, "\t\t- apiVersion: %04X\n\t\t- flags: %08X\n", 5898 mDescriptor.apiVersion, 5899 mDescriptor.flags); 5900 result.append(buffer); 5901 snprintf(buffer, SIZE, "\t\t- name: %s\n", 5902 mDescriptor.name); 5903 result.append(buffer); 5904 snprintf(buffer, SIZE, "\t\t- implementor: %s\n", 5905 mDescriptor.implementor); 5906 result.append(buffer); 5907 5908 result.append("\t\t- Input configuration:\n"); 5909 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 5910 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 5911 (uint32_t)mConfig.inputCfg.buffer.raw, 5912 mConfig.inputCfg.buffer.frameCount, 5913 mConfig.inputCfg.samplingRate, 5914 mConfig.inputCfg.channels, 5915 mConfig.inputCfg.format); 5916 result.append(buffer); 5917 5918 result.append("\t\t- Output configuration:\n"); 5919 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 5920 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 5921 (uint32_t)mConfig.outputCfg.buffer.raw, 5922 mConfig.outputCfg.buffer.frameCount, 5923 mConfig.outputCfg.samplingRate, 5924 mConfig.outputCfg.channels, 5925 mConfig.outputCfg.format); 5926 result.append(buffer); 5927 5928 snprintf(buffer, SIZE, "\t\t%d Clients:\n", mHandles.size()); 5929 result.append(buffer); 5930 result.append("\t\t\tPid Priority Ctrl Locked client server\n"); 5931 for (size_t i = 0; i < mHandles.size(); ++i) { 5932 sp<EffectHandle> handle = mHandles[i].promote(); 5933 if (handle != 0) { 5934 handle->dump(buffer, SIZE); 5935 result.append(buffer); 5936 } 5937 } 5938 5939 result.append("\n"); 5940 5941 write(fd, result.string(), result.length()); 5942 5943 if (locked) { 5944 mLock.unlock(); 5945 } 5946 5947 return NO_ERROR; 5948} 5949 5950// ---------------------------------------------------------------------------- 5951// EffectHandle implementation 5952// ---------------------------------------------------------------------------- 5953 5954#undef LOG_TAG 5955#define LOG_TAG "AudioFlinger::EffectHandle" 5956 5957AudioFlinger::EffectHandle::EffectHandle(const sp<EffectModule>& effect, 5958 const sp<AudioFlinger::Client>& client, 5959 const sp<IEffectClient>& effectClient, 5960 int32_t priority) 5961 : BnEffect(), 5962 mEffect(effect), mEffectClient(effectClient), mClient(client), mPriority(priority), mHasControl(false) 5963{ 5964 LOGV("constructor %p", this); 5965 5966 int bufOffset = ((sizeof(effect_param_cblk_t) - 1) / sizeof(int) + 1) * sizeof(int); 5967 mCblkMemory = client->heap()->allocate(EFFECT_PARAM_BUFFER_SIZE + bufOffset); 5968 if (mCblkMemory != 0) { 5969 mCblk = static_cast<effect_param_cblk_t *>(mCblkMemory->pointer()); 5970 5971 if (mCblk) { 5972 new(mCblk) effect_param_cblk_t(); 5973 mBuffer = (uint8_t *)mCblk + bufOffset; 5974 } 5975 } else { 5976 LOGE("not enough memory for Effect size=%u", EFFECT_PARAM_BUFFER_SIZE + sizeof(effect_param_cblk_t)); 5977 return; 5978 } 5979} 5980 5981AudioFlinger::EffectHandle::~EffectHandle() 5982{ 5983 LOGV("Destructor %p", this); 5984 disconnect(); 5985} 5986 5987status_t AudioFlinger::EffectHandle::enable() 5988{ 5989 if (!mHasControl) return INVALID_OPERATION; 5990 if (mEffect == 0) return DEAD_OBJECT; 5991 5992 return mEffect->setEnabled(true); 5993} 5994 5995status_t AudioFlinger::EffectHandle::disable() 5996{ 5997 if (!mHasControl) return INVALID_OPERATION; 5998 if (mEffect == NULL) return DEAD_OBJECT; 5999 6000 return mEffect->setEnabled(false); 6001} 6002 6003void AudioFlinger::EffectHandle::disconnect() 6004{ 6005 if (mEffect == 0) { 6006 return; 6007 } 6008 mEffect->disconnect(this); 6009 // release sp on module => module destructor can be called now 6010 mEffect.clear(); 6011 if (mCblk) { 6012 mCblk->~effect_param_cblk_t(); // destroy our shared-structure. 6013 } 6014 mCblkMemory.clear(); // and free the shared memory 6015 if (mClient != 0) { 6016 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 6017 mClient.clear(); 6018 } 6019} 6020 6021status_t AudioFlinger::EffectHandle::command(uint32_t cmdCode, 6022 uint32_t cmdSize, 6023 void *pCmdData, 6024 uint32_t *replySize, 6025 void *pReplyData) 6026{ 6027// LOGV("command(), cmdCode: %d, mHasControl: %d, mEffect: %p", 6028// cmdCode, mHasControl, (mEffect == 0) ? 0 : mEffect.get()); 6029 6030 // only get parameter command is permitted for applications not controlling the effect 6031 if (!mHasControl && cmdCode != EFFECT_CMD_GET_PARAM) { 6032 return INVALID_OPERATION; 6033 } 6034 if (mEffect == 0) return DEAD_OBJECT; 6035 6036 // handle commands that are not forwarded transparently to effect engine 6037 if (cmdCode == EFFECT_CMD_SET_PARAM_COMMIT) { 6038 // No need to trylock() here as this function is executed in the binder thread serving a particular client process: 6039 // no risk to block the whole media server process or mixer threads is we are stuck here 6040 Mutex::Autolock _l(mCblk->lock); 6041 if (mCblk->clientIndex > EFFECT_PARAM_BUFFER_SIZE || 6042 mCblk->serverIndex > EFFECT_PARAM_BUFFER_SIZE) { 6043 mCblk->serverIndex = 0; 6044 mCblk->clientIndex = 0; 6045 return BAD_VALUE; 6046 } 6047 status_t status = NO_ERROR; 6048 while (mCblk->serverIndex < mCblk->clientIndex) { 6049 int reply; 6050 uint32_t rsize = sizeof(int); 6051 int *p = (int *)(mBuffer + mCblk->serverIndex); 6052 int size = *p++; 6053 if (((uint8_t *)p + size) > mBuffer + mCblk->clientIndex) { 6054 LOGW("command(): invalid parameter block size"); 6055 break; 6056 } 6057 effect_param_t *param = (effect_param_t *)p; 6058 if (param->psize == 0 || param->vsize == 0) { 6059 LOGW("command(): null parameter or value size"); 6060 mCblk->serverIndex += size; 6061 continue; 6062 } 6063 uint32_t psize = sizeof(effect_param_t) + 6064 ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + 6065 param->vsize; 6066 status_t ret = mEffect->command(EFFECT_CMD_SET_PARAM, 6067 psize, 6068 p, 6069 &rsize, 6070 &reply); 6071 // stop at first error encountered 6072 if (ret != NO_ERROR) { 6073 status = ret; 6074 *(int *)pReplyData = reply; 6075 break; 6076 } else if (reply != NO_ERROR) { 6077 *(int *)pReplyData = reply; 6078 break; 6079 } 6080 mCblk->serverIndex += size; 6081 } 6082 mCblk->serverIndex = 0; 6083 mCblk->clientIndex = 0; 6084 return status; 6085 } else if (cmdCode == EFFECT_CMD_ENABLE) { 6086 *(int *)pReplyData = NO_ERROR; 6087 return enable(); 6088 } else if (cmdCode == EFFECT_CMD_DISABLE) { 6089 *(int *)pReplyData = NO_ERROR; 6090 return disable(); 6091 } 6092 6093 return mEffect->command(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6094} 6095 6096sp<IMemory> AudioFlinger::EffectHandle::getCblk() const { 6097 return mCblkMemory; 6098} 6099 6100void AudioFlinger::EffectHandle::setControl(bool hasControl, bool signal) 6101{ 6102 LOGV("setControl %p control %d", this, hasControl); 6103 6104 mHasControl = hasControl; 6105 if (signal && mEffectClient != 0) { 6106 mEffectClient->controlStatusChanged(hasControl); 6107 } 6108} 6109 6110void AudioFlinger::EffectHandle::commandExecuted(uint32_t cmdCode, 6111 uint32_t cmdSize, 6112 void *pCmdData, 6113 uint32_t replySize, 6114 void *pReplyData) 6115{ 6116 if (mEffectClient != 0) { 6117 mEffectClient->commandExecuted(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6118 } 6119} 6120 6121 6122 6123void AudioFlinger::EffectHandle::setEnabled(bool enabled) 6124{ 6125 if (mEffectClient != 0) { 6126 mEffectClient->enableStatusChanged(enabled); 6127 } 6128} 6129 6130status_t AudioFlinger::EffectHandle::onTransact( 6131 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 6132{ 6133 return BnEffect::onTransact(code, data, reply, flags); 6134} 6135 6136 6137void AudioFlinger::EffectHandle::dump(char* buffer, size_t size) 6138{ 6139 bool locked = tryLock(mCblk->lock); 6140 6141 snprintf(buffer, size, "\t\t\t%05d %05d %01u %01u %05u %05u\n", 6142 (mClient == NULL) ? getpid() : mClient->pid(), 6143 mPriority, 6144 mHasControl, 6145 !locked, 6146 mCblk->clientIndex, 6147 mCblk->serverIndex 6148 ); 6149 6150 if (locked) { 6151 mCblk->lock.unlock(); 6152 } 6153} 6154 6155#undef LOG_TAG 6156#define LOG_TAG "AudioFlinger::EffectChain" 6157 6158AudioFlinger::EffectChain::EffectChain(const wp<ThreadBase>& wThread, 6159 int sessionId) 6160 : mThread(wThread), mSessionId(sessionId), mActiveTrackCnt(0), mOwnInBuffer(false), 6161 mVolumeCtrlIdx(-1), mLeftVolume(UINT_MAX), mRightVolume(UINT_MAX), 6162 mNewLeftVolume(UINT_MAX), mNewRightVolume(UINT_MAX) 6163{ 6164 mStrategy = AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 6165} 6166 6167AudioFlinger::EffectChain::~EffectChain() 6168{ 6169 if (mOwnInBuffer) { 6170 delete mInBuffer; 6171 } 6172 6173} 6174 6175// getEffectFromDesc_l() must be called with PlaybackThread::mLock held 6176sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromDesc_l(effect_descriptor_t *descriptor) 6177{ 6178 sp<EffectModule> effect; 6179 size_t size = mEffects.size(); 6180 6181 for (size_t i = 0; i < size; i++) { 6182 if (memcmp(&mEffects[i]->desc().uuid, &descriptor->uuid, sizeof(effect_uuid_t)) == 0) { 6183 effect = mEffects[i]; 6184 break; 6185 } 6186 } 6187 return effect; 6188} 6189 6190// getEffectFromId_l() must be called with PlaybackThread::mLock held 6191sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromId_l(int id) 6192{ 6193 sp<EffectModule> effect; 6194 size_t size = mEffects.size(); 6195 6196 for (size_t i = 0; i < size; i++) { 6197 // by convention, return first effect if id provided is 0 (0 is never a valid id) 6198 if (id == 0 || mEffects[i]->id() == id) { 6199 effect = mEffects[i]; 6200 break; 6201 } 6202 } 6203 return effect; 6204} 6205 6206// Must be called with EffectChain::mLock locked 6207void AudioFlinger::EffectChain::process_l() 6208{ 6209 sp<ThreadBase> thread = mThread.promote(); 6210 if (thread == 0) { 6211 LOGW("process_l(): cannot promote mixer thread"); 6212 return; 6213 } 6214 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 6215 bool isGlobalSession = (mSessionId == AUDIO_SESSION_OUTPUT_MIX) || 6216 (mSessionId == AUDIO_SESSION_OUTPUT_STAGE); 6217 bool tracksOnSession = false; 6218 if (!isGlobalSession) { 6219 tracksOnSession = 6220 playbackThread->hasAudioSession(mSessionId) & PlaybackThread::TRACK_SESSION; 6221 } 6222 6223 size_t size = mEffects.size(); 6224 // do not process effect if no track is present in same audio session 6225 if (isGlobalSession || tracksOnSession) { 6226 for (size_t i = 0; i < size; i++) { 6227 mEffects[i]->process(); 6228 } 6229 } 6230 for (size_t i = 0; i < size; i++) { 6231 mEffects[i]->updateState(); 6232 } 6233 // if no track is active, input buffer must be cleared here as the mixer process 6234 // will not do it 6235 if (tracksOnSession && 6236 activeTracks() == 0) { 6237 size_t numSamples = playbackThread->frameCount() * playbackThread->channelCount(); 6238 memset(mInBuffer, 0, numSamples * sizeof(int16_t)); 6239 } 6240} 6241 6242// addEffect_l() must be called with PlaybackThread::mLock held 6243status_t AudioFlinger::EffectChain::addEffect_l(const sp<EffectModule>& effect) 6244{ 6245 effect_descriptor_t desc = effect->desc(); 6246 uint32_t insertPref = desc.flags & EFFECT_FLAG_INSERT_MASK; 6247 6248 Mutex::Autolock _l(mLock); 6249 effect->setChain(this); 6250 sp<ThreadBase> thread = mThread.promote(); 6251 if (thread == 0) { 6252 return NO_INIT; 6253 } 6254 effect->setThread(thread); 6255 6256 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6257 // Auxiliary effects are inserted at the beginning of mEffects vector as 6258 // they are processed first and accumulated in chain input buffer 6259 mEffects.insertAt(effect, 0); 6260 6261 // the input buffer for auxiliary effect contains mono samples in 6262 // 32 bit format. This is to avoid saturation in AudoMixer 6263 // accumulation stage. Saturation is done in EffectModule::process() before 6264 // calling the process in effect engine 6265 size_t numSamples = thread->frameCount(); 6266 int32_t *buffer = new int32_t[numSamples]; 6267 memset(buffer, 0, numSamples * sizeof(int32_t)); 6268 effect->setInBuffer((int16_t *)buffer); 6269 // auxiliary effects output samples to chain input buffer for further processing 6270 // by insert effects 6271 effect->setOutBuffer(mInBuffer); 6272 } else { 6273 // Insert effects are inserted at the end of mEffects vector as they are processed 6274 // after track and auxiliary effects. 6275 // Insert effect order as a function of indicated preference: 6276 // if EFFECT_FLAG_INSERT_EXCLUSIVE, insert in first position or reject if 6277 // another effect is present 6278 // else if EFFECT_FLAG_INSERT_FIRST, insert in first position or after the 6279 // last effect claiming first position 6280 // else if EFFECT_FLAG_INSERT_LAST, insert in last position or before the 6281 // first effect claiming last position 6282 // else if EFFECT_FLAG_INSERT_ANY insert after first or before last 6283 // Reject insertion if an effect with EFFECT_FLAG_INSERT_EXCLUSIVE is 6284 // already present 6285 6286 int size = (int)mEffects.size(); 6287 int idx_insert = size; 6288 int idx_insert_first = -1; 6289 int idx_insert_last = -1; 6290 6291 for (int i = 0; i < size; i++) { 6292 effect_descriptor_t d = mEffects[i]->desc(); 6293 uint32_t iMode = d.flags & EFFECT_FLAG_TYPE_MASK; 6294 uint32_t iPref = d.flags & EFFECT_FLAG_INSERT_MASK; 6295 if (iMode == EFFECT_FLAG_TYPE_INSERT) { 6296 // check invalid effect chaining combinations 6297 if (insertPref == EFFECT_FLAG_INSERT_EXCLUSIVE || 6298 iPref == EFFECT_FLAG_INSERT_EXCLUSIVE) { 6299 LOGW("addEffect_l() could not insert effect %s: exclusive conflict with %s", desc.name, d.name); 6300 return INVALID_OPERATION; 6301 } 6302 // remember position of first insert effect and by default 6303 // select this as insert position for new effect 6304 if (idx_insert == size) { 6305 idx_insert = i; 6306 } 6307 // remember position of last insert effect claiming 6308 // first position 6309 if (iPref == EFFECT_FLAG_INSERT_FIRST) { 6310 idx_insert_first = i; 6311 } 6312 // remember position of first insert effect claiming 6313 // last position 6314 if (iPref == EFFECT_FLAG_INSERT_LAST && 6315 idx_insert_last == -1) { 6316 idx_insert_last = i; 6317 } 6318 } 6319 } 6320 6321 // modify idx_insert from first position if needed 6322 if (insertPref == EFFECT_FLAG_INSERT_LAST) { 6323 if (idx_insert_last != -1) { 6324 idx_insert = idx_insert_last; 6325 } else { 6326 idx_insert = size; 6327 } 6328 } else { 6329 if (idx_insert_first != -1) { 6330 idx_insert = idx_insert_first + 1; 6331 } 6332 } 6333 6334 // always read samples from chain input buffer 6335 effect->setInBuffer(mInBuffer); 6336 6337 // if last effect in the chain, output samples to chain 6338 // output buffer, otherwise to chain input buffer 6339 if (idx_insert == size) { 6340 if (idx_insert != 0) { 6341 mEffects[idx_insert-1]->setOutBuffer(mInBuffer); 6342 mEffects[idx_insert-1]->configure(); 6343 } 6344 effect->setOutBuffer(mOutBuffer); 6345 } else { 6346 effect->setOutBuffer(mInBuffer); 6347 } 6348 mEffects.insertAt(effect, idx_insert); 6349 6350 LOGV("addEffect_l() effect %p, added in chain %p at rank %d", effect.get(), this, idx_insert); 6351 } 6352 effect->configure(); 6353 return NO_ERROR; 6354} 6355 6356// removeEffect_l() must be called with PlaybackThread::mLock held 6357size_t AudioFlinger::EffectChain::removeEffect_l(const sp<EffectModule>& effect) 6358{ 6359 Mutex::Autolock _l(mLock); 6360 int size = (int)mEffects.size(); 6361 int i; 6362 uint32_t type = effect->desc().flags & EFFECT_FLAG_TYPE_MASK; 6363 6364 for (i = 0; i < size; i++) { 6365 if (effect == mEffects[i]) { 6366 if (type == EFFECT_FLAG_TYPE_AUXILIARY) { 6367 delete[] effect->inBuffer(); 6368 } else { 6369 if (i == size - 1 && i != 0) { 6370 mEffects[i - 1]->setOutBuffer(mOutBuffer); 6371 mEffects[i - 1]->configure(); 6372 } 6373 } 6374 mEffects.removeAt(i); 6375 LOGV("removeEffect_l() effect %p, removed from chain %p at rank %d", effect.get(), this, i); 6376 break; 6377 } 6378 } 6379 6380 return mEffects.size(); 6381} 6382 6383// setDevice_l() must be called with PlaybackThread::mLock held 6384void AudioFlinger::EffectChain::setDevice_l(uint32_t device) 6385{ 6386 size_t size = mEffects.size(); 6387 for (size_t i = 0; i < size; i++) { 6388 mEffects[i]->setDevice(device); 6389 } 6390} 6391 6392// setMode_l() must be called with PlaybackThread::mLock held 6393void AudioFlinger::EffectChain::setMode_l(uint32_t mode) 6394{ 6395 size_t size = mEffects.size(); 6396 for (size_t i = 0; i < size; i++) { 6397 mEffects[i]->setMode(mode); 6398 } 6399} 6400 6401// setVolume_l() must be called with PlaybackThread::mLock held 6402bool AudioFlinger::EffectChain::setVolume_l(uint32_t *left, uint32_t *right) 6403{ 6404 uint32_t newLeft = *left; 6405 uint32_t newRight = *right; 6406 bool hasControl = false; 6407 int ctrlIdx = -1; 6408 size_t size = mEffects.size(); 6409 6410 // first update volume controller 6411 for (size_t i = size; i > 0; i--) { 6412 if (mEffects[i - 1]->isProcessEnabled() && 6413 (mEffects[i - 1]->desc().flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL) { 6414 ctrlIdx = i - 1; 6415 hasControl = true; 6416 break; 6417 } 6418 } 6419 6420 if (ctrlIdx == mVolumeCtrlIdx && *left == mLeftVolume && *right == mRightVolume) { 6421 if (hasControl) { 6422 *left = mNewLeftVolume; 6423 *right = mNewRightVolume; 6424 } 6425 return hasControl; 6426 } 6427 6428 mVolumeCtrlIdx = ctrlIdx; 6429 mLeftVolume = newLeft; 6430 mRightVolume = newRight; 6431 6432 // second get volume update from volume controller 6433 if (ctrlIdx >= 0) { 6434 mEffects[ctrlIdx]->setVolume(&newLeft, &newRight, true); 6435 mNewLeftVolume = newLeft; 6436 mNewRightVolume = newRight; 6437 } 6438 // then indicate volume to all other effects in chain. 6439 // Pass altered volume to effects before volume controller 6440 // and requested volume to effects after controller 6441 uint32_t lVol = newLeft; 6442 uint32_t rVol = newRight; 6443 6444 for (size_t i = 0; i < size; i++) { 6445 if ((int)i == ctrlIdx) continue; 6446 // this also works for ctrlIdx == -1 when there is no volume controller 6447 if ((int)i > ctrlIdx) { 6448 lVol = *left; 6449 rVol = *right; 6450 } 6451 mEffects[i]->setVolume(&lVol, &rVol, false); 6452 } 6453 *left = newLeft; 6454 *right = newRight; 6455 6456 return hasControl; 6457} 6458 6459status_t AudioFlinger::EffectChain::dump(int fd, const Vector<String16>& args) 6460{ 6461 const size_t SIZE = 256; 6462 char buffer[SIZE]; 6463 String8 result; 6464 6465 snprintf(buffer, SIZE, "Effects for session %d:\n", mSessionId); 6466 result.append(buffer); 6467 6468 bool locked = tryLock(mLock); 6469 // failed to lock - AudioFlinger is probably deadlocked 6470 if (!locked) { 6471 result.append("\tCould not lock mutex:\n"); 6472 } 6473 6474 result.append("\tNum fx In buffer Out buffer Active tracks:\n"); 6475 snprintf(buffer, SIZE, "\t%02d 0x%08x 0x%08x %d\n", 6476 mEffects.size(), 6477 (uint32_t)mInBuffer, 6478 (uint32_t)mOutBuffer, 6479 mActiveTrackCnt); 6480 result.append(buffer); 6481 write(fd, result.string(), result.size()); 6482 6483 for (size_t i = 0; i < mEffects.size(); ++i) { 6484 sp<EffectModule> effect = mEffects[i]; 6485 if (effect != 0) { 6486 effect->dump(fd, args); 6487 } 6488 } 6489 6490 if (locked) { 6491 mLock.unlock(); 6492 } 6493 6494 return NO_ERROR; 6495} 6496 6497#undef LOG_TAG 6498#define LOG_TAG "AudioFlinger" 6499 6500// ---------------------------------------------------------------------------- 6501 6502status_t AudioFlinger::onTransact( 6503 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 6504{ 6505 return BnAudioFlinger::onTransact(code, data, reply, flags); 6506} 6507 6508}; // namespace android 6509