AudioFlinger.cpp revision bee5337da7659b3b7128622ba1f42618b11df5be
1/* //device/include/server/AudioFlinger/AudioFlinger.cpp 2** 3** Copyright 2007, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18 19#define LOG_TAG "AudioFlinger" 20//#define LOG_NDEBUG 0 21 22#include <math.h> 23#include <signal.h> 24#include <sys/time.h> 25#include <sys/resource.h> 26 27#include <binder/IPCThreadState.h> 28#include <binder/IServiceManager.h> 29#include <utils/Log.h> 30#include <binder/Parcel.h> 31#include <binder/IPCThreadState.h> 32#include <utils/String16.h> 33#include <utils/threads.h> 34#include <utils/Atomic.h> 35 36#include <cutils/bitops.h> 37#include <cutils/properties.h> 38 39#include <media/AudioTrack.h> 40#include <media/AudioRecord.h> 41#include <media/IMediaPlayerService.h> 42 43#include <private/media/AudioTrackShared.h> 44#include <private/media/AudioEffectShared.h> 45 46#include <system/audio.h> 47#include <hardware/audio.h> 48 49#include "AudioMixer.h" 50#include "AudioFlinger.h" 51 52#include <media/EffectsFactoryApi.h> 53#include <audio_effects/effect_visualizer.h> 54#include <audio_effects/effect_ns.h> 55#include <audio_effects/effect_aec.h> 56 57#include <cpustats/ThreadCpuUsage.h> 58#include <powermanager/PowerManager.h> 59// #define DEBUG_CPU_USAGE 10 // log statistics every n wall clock seconds 60 61// ---------------------------------------------------------------------------- 62 63 64namespace android { 65 66static const char* kDeadlockedString = "AudioFlinger may be deadlocked\n"; 67static const char* kHardwareLockedString = "Hardware lock is taken\n"; 68 69//static const nsecs_t kStandbyTimeInNsecs = seconds(3); 70static const float MAX_GAIN = 4096.0f; 71static const float MAX_GAIN_INT = 0x1000; 72 73// retry counts for buffer fill timeout 74// 50 * ~20msecs = 1 second 75static const int8_t kMaxTrackRetries = 50; 76static const int8_t kMaxTrackStartupRetries = 50; 77// allow less retry attempts on direct output thread. 78// direct outputs can be a scarce resource in audio hardware and should 79// be released as quickly as possible. 80static const int8_t kMaxTrackRetriesDirect = 2; 81 82static const int kDumpLockRetries = 50; 83static const int kDumpLockSleep = 20000; 84 85static const nsecs_t kWarningThrottle = seconds(5); 86 87// RecordThread loop sleep time upon application overrun or audio HAL read error 88static const int kRecordThreadSleepUs = 5000; 89 90// ---------------------------------------------------------------------------- 91 92static bool recordingAllowed() { 93 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 94 bool ok = checkCallingPermission(String16("android.permission.RECORD_AUDIO")); 95 if (!ok) LOGE("Request requires android.permission.RECORD_AUDIO"); 96 return ok; 97} 98 99static bool settingsAllowed() { 100 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 101 bool ok = checkCallingPermission(String16("android.permission.MODIFY_AUDIO_SETTINGS")); 102 if (!ok) LOGE("Request requires android.permission.MODIFY_AUDIO_SETTINGS"); 103 return ok; 104} 105 106// To collect the amplifier usage 107static void addBatteryData(uint32_t params) { 108 sp<IBinder> binder = 109 defaultServiceManager()->getService(String16("media.player")); 110 sp<IMediaPlayerService> service = interface_cast<IMediaPlayerService>(binder); 111 if (service.get() == NULL) { 112 LOGW("Cannot connect to the MediaPlayerService for battery tracking"); 113 return; 114 } 115 116 service->addBatteryData(params); 117} 118 119static int load_audio_interface(const char *if_name, const hw_module_t **mod, 120 audio_hw_device_t **dev) 121{ 122 int rc; 123 124 rc = hw_get_module_by_class(AUDIO_HARDWARE_MODULE_ID, if_name, mod); 125 if (rc) 126 goto out; 127 128 rc = audio_hw_device_open(*mod, dev); 129 LOGE_IF(rc, "couldn't open audio hw device in %s.%s (%s)", 130 AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc)); 131 if (rc) 132 goto out; 133 134 return 0; 135 136out: 137 *mod = NULL; 138 *dev = NULL; 139 return rc; 140} 141 142static const char *audio_interfaces[] = { 143 "primary", 144 "a2dp", 145 "usb", 146}; 147#define ARRAY_SIZE(x) (sizeof((x))/sizeof(((x)[0]))) 148 149// ---------------------------------------------------------------------------- 150 151AudioFlinger::AudioFlinger() 152 : BnAudioFlinger(), 153 mPrimaryHardwareDev(0), mMasterVolume(1.0f), mMasterMute(false), mNextUniqueId(1), 154 mBtNrecIsOff(false) 155{ 156} 157 158void AudioFlinger::onFirstRef() 159{ 160 int rc = 0; 161 162 Mutex::Autolock _l(mLock); 163 164 /* TODO: move all this work into an Init() function */ 165 mHardwareStatus = AUDIO_HW_IDLE; 166 167 for (size_t i = 0; i < ARRAY_SIZE(audio_interfaces); i++) { 168 const hw_module_t *mod; 169 audio_hw_device_t *dev; 170 171 rc = load_audio_interface(audio_interfaces[i], &mod, &dev); 172 if (rc) 173 continue; 174 175 LOGI("Loaded %s audio interface from %s (%s)", audio_interfaces[i], 176 mod->name, mod->id); 177 mAudioHwDevs.push(dev); 178 179 if (!mPrimaryHardwareDev) { 180 mPrimaryHardwareDev = dev; 181 LOGI("Using '%s' (%s.%s) as the primary audio interface", 182 mod->name, mod->id, audio_interfaces[i]); 183 } 184 } 185 186 mHardwareStatus = AUDIO_HW_INIT; 187 188 if (!mPrimaryHardwareDev || mAudioHwDevs.size() == 0) { 189 LOGE("Primary audio interface not found"); 190 return; 191 } 192 193 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 194 audio_hw_device_t *dev = mAudioHwDevs[i]; 195 196 mHardwareStatus = AUDIO_HW_INIT; 197 rc = dev->init_check(dev); 198 if (rc == 0) { 199 AutoMutex lock(mHardwareLock); 200 201 mMode = AUDIO_MODE_NORMAL; 202 mHardwareStatus = AUDIO_HW_SET_MODE; 203 dev->set_mode(dev, mMode); 204 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 205 dev->set_master_volume(dev, 1.0f); 206 mHardwareStatus = AUDIO_HW_IDLE; 207 } 208 } 209} 210 211status_t AudioFlinger::initCheck() const 212{ 213 Mutex::Autolock _l(mLock); 214 if (mPrimaryHardwareDev == NULL || mAudioHwDevs.size() == 0) 215 return NO_INIT; 216 return NO_ERROR; 217} 218 219AudioFlinger::~AudioFlinger() 220{ 221 int num_devs = mAudioHwDevs.size(); 222 223 while (!mRecordThreads.isEmpty()) { 224 // closeInput() will remove first entry from mRecordThreads 225 closeInput(mRecordThreads.keyAt(0)); 226 } 227 while (!mPlaybackThreads.isEmpty()) { 228 // closeOutput() will remove first entry from mPlaybackThreads 229 closeOutput(mPlaybackThreads.keyAt(0)); 230 } 231 232 for (int i = 0; i < num_devs; i++) { 233 audio_hw_device_t *dev = mAudioHwDevs[i]; 234 audio_hw_device_close(dev); 235 } 236 mAudioHwDevs.clear(); 237} 238 239audio_hw_device_t* AudioFlinger::findSuitableHwDev_l(uint32_t devices) 240{ 241 /* first matching HW device is returned */ 242 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 243 audio_hw_device_t *dev = mAudioHwDevs[i]; 244 if ((dev->get_supported_devices(dev) & devices) == devices) 245 return dev; 246 } 247 return NULL; 248} 249 250status_t AudioFlinger::dumpClients(int fd, const Vector<String16>& args) 251{ 252 const size_t SIZE = 256; 253 char buffer[SIZE]; 254 String8 result; 255 256 result.append("Clients:\n"); 257 for (size_t i = 0; i < mClients.size(); ++i) { 258 wp<Client> wClient = mClients.valueAt(i); 259 if (wClient != 0) { 260 sp<Client> client = wClient.promote(); 261 if (client != 0) { 262 snprintf(buffer, SIZE, " pid: %d\n", client->pid()); 263 result.append(buffer); 264 } 265 } 266 } 267 268 result.append("Global session refs:\n"); 269 result.append(" session pid cnt\n"); 270 for (size_t i = 0; i < mAudioSessionRefs.size(); i++) { 271 AudioSessionRef *r = mAudioSessionRefs[i]; 272 snprintf(buffer, SIZE, " %7d %3d %3d\n", r->sessionid, r->pid, r->cnt); 273 result.append(buffer); 274 } 275 write(fd, result.string(), result.size()); 276 return NO_ERROR; 277} 278 279 280status_t AudioFlinger::dumpInternals(int fd, const Vector<String16>& args) 281{ 282 const size_t SIZE = 256; 283 char buffer[SIZE]; 284 String8 result; 285 int hardwareStatus = mHardwareStatus; 286 287 snprintf(buffer, SIZE, "Hardware status: %d\n", hardwareStatus); 288 result.append(buffer); 289 write(fd, result.string(), result.size()); 290 return NO_ERROR; 291} 292 293status_t AudioFlinger::dumpPermissionDenial(int fd, const Vector<String16>& args) 294{ 295 const size_t SIZE = 256; 296 char buffer[SIZE]; 297 String8 result; 298 snprintf(buffer, SIZE, "Permission Denial: " 299 "can't dump AudioFlinger from pid=%d, uid=%d\n", 300 IPCThreadState::self()->getCallingPid(), 301 IPCThreadState::self()->getCallingUid()); 302 result.append(buffer); 303 write(fd, result.string(), result.size()); 304 return NO_ERROR; 305} 306 307static bool tryLock(Mutex& mutex) 308{ 309 bool locked = false; 310 for (int i = 0; i < kDumpLockRetries; ++i) { 311 if (mutex.tryLock() == NO_ERROR) { 312 locked = true; 313 break; 314 } 315 usleep(kDumpLockSleep); 316 } 317 return locked; 318} 319 320status_t AudioFlinger::dump(int fd, const Vector<String16>& args) 321{ 322 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 323 dumpPermissionDenial(fd, args); 324 } else { 325 // get state of hardware lock 326 bool hardwareLocked = tryLock(mHardwareLock); 327 if (!hardwareLocked) { 328 String8 result(kHardwareLockedString); 329 write(fd, result.string(), result.size()); 330 } else { 331 mHardwareLock.unlock(); 332 } 333 334 bool locked = tryLock(mLock); 335 336 // failed to lock - AudioFlinger is probably deadlocked 337 if (!locked) { 338 String8 result(kDeadlockedString); 339 write(fd, result.string(), result.size()); 340 } 341 342 dumpClients(fd, args); 343 dumpInternals(fd, args); 344 345 // dump playback threads 346 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 347 mPlaybackThreads.valueAt(i)->dump(fd, args); 348 } 349 350 // dump record threads 351 for (size_t i = 0; i < mRecordThreads.size(); i++) { 352 mRecordThreads.valueAt(i)->dump(fd, args); 353 } 354 355 // dump all hardware devs 356 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 357 audio_hw_device_t *dev = mAudioHwDevs[i]; 358 dev->dump(dev, fd); 359 } 360 if (locked) mLock.unlock(); 361 } 362 return NO_ERROR; 363} 364 365 366// IAudioFlinger interface 367 368 369sp<IAudioTrack> AudioFlinger::createTrack( 370 pid_t pid, 371 int streamType, 372 uint32_t sampleRate, 373 uint32_t format, 374 uint32_t channelMask, 375 int frameCount, 376 uint32_t flags, 377 const sp<IMemory>& sharedBuffer, 378 int output, 379 int *sessionId, 380 status_t *status) 381{ 382 sp<PlaybackThread::Track> track; 383 sp<TrackHandle> trackHandle; 384 sp<Client> client; 385 wp<Client> wclient; 386 status_t lStatus; 387 int lSessionId; 388 389 if (streamType >= AUDIO_STREAM_CNT) { 390 LOGE("invalid stream type"); 391 lStatus = BAD_VALUE; 392 goto Exit; 393 } 394 395 { 396 Mutex::Autolock _l(mLock); 397 PlaybackThread *thread = checkPlaybackThread_l(output); 398 PlaybackThread *effectThread = NULL; 399 if (thread == NULL) { 400 LOGE("unknown output thread"); 401 lStatus = BAD_VALUE; 402 goto Exit; 403 } 404 405 wclient = mClients.valueFor(pid); 406 407 if (wclient != NULL) { 408 client = wclient.promote(); 409 } else { 410 client = new Client(this, pid); 411 mClients.add(pid, client); 412 } 413 414 LOGV("createTrack() sessionId: %d", (sessionId == NULL) ? -2 : *sessionId); 415 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 416 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 417 sp<PlaybackThread> t = mPlaybackThreads.valueAt(i); 418 if (mPlaybackThreads.keyAt(i) != output) { 419 // prevent same audio session on different output threads 420 uint32_t sessions = t->hasAudioSession(*sessionId); 421 if (sessions & PlaybackThread::TRACK_SESSION) { 422 lStatus = BAD_VALUE; 423 goto Exit; 424 } 425 // check if an effect with same session ID is waiting for a track to be created 426 if (sessions & PlaybackThread::EFFECT_SESSION) { 427 effectThread = t.get(); 428 } 429 } 430 } 431 lSessionId = *sessionId; 432 } else { 433 // if no audio session id is provided, create one here 434 lSessionId = nextUniqueId(); 435 if (sessionId != NULL) { 436 *sessionId = lSessionId; 437 } 438 } 439 LOGV("createTrack() lSessionId: %d", lSessionId); 440 441 track = thread->createTrack_l(client, streamType, sampleRate, format, 442 channelMask, frameCount, sharedBuffer, lSessionId, &lStatus); 443 444 // move effect chain to this output thread if an effect on same session was waiting 445 // for a track to be created 446 if (lStatus == NO_ERROR && effectThread != NULL) { 447 Mutex::Autolock _dl(thread->mLock); 448 Mutex::Autolock _sl(effectThread->mLock); 449 moveEffectChain_l(lSessionId, effectThread, thread, true); 450 } 451 } 452 if (lStatus == NO_ERROR) { 453 trackHandle = new TrackHandle(track); 454 } else { 455 // remove local strong reference to Client before deleting the Track so that the Client 456 // destructor is called by the TrackBase destructor with mLock held 457 client.clear(); 458 track.clear(); 459 } 460 461Exit: 462 if(status) { 463 *status = lStatus; 464 } 465 return trackHandle; 466} 467 468uint32_t AudioFlinger::sampleRate(int output) const 469{ 470 Mutex::Autolock _l(mLock); 471 PlaybackThread *thread = checkPlaybackThread_l(output); 472 if (thread == NULL) { 473 LOGW("sampleRate() unknown thread %d", output); 474 return 0; 475 } 476 return thread->sampleRate(); 477} 478 479int AudioFlinger::channelCount(int output) const 480{ 481 Mutex::Autolock _l(mLock); 482 PlaybackThread *thread = checkPlaybackThread_l(output); 483 if (thread == NULL) { 484 LOGW("channelCount() unknown thread %d", output); 485 return 0; 486 } 487 return thread->channelCount(); 488} 489 490uint32_t AudioFlinger::format(int output) const 491{ 492 Mutex::Autolock _l(mLock); 493 PlaybackThread *thread = checkPlaybackThread_l(output); 494 if (thread == NULL) { 495 LOGW("format() unknown thread %d", output); 496 return 0; 497 } 498 return thread->format(); 499} 500 501size_t AudioFlinger::frameCount(int output) const 502{ 503 Mutex::Autolock _l(mLock); 504 PlaybackThread *thread = checkPlaybackThread_l(output); 505 if (thread == NULL) { 506 LOGW("frameCount() unknown thread %d", output); 507 return 0; 508 } 509 return thread->frameCount(); 510} 511 512uint32_t AudioFlinger::latency(int output) const 513{ 514 Mutex::Autolock _l(mLock); 515 PlaybackThread *thread = checkPlaybackThread_l(output); 516 if (thread == NULL) { 517 LOGW("latency() unknown thread %d", output); 518 return 0; 519 } 520 return thread->latency(); 521} 522 523status_t AudioFlinger::setMasterVolume(float value) 524{ 525 status_t ret = initCheck(); 526 if (ret != NO_ERROR) { 527 return ret; 528 } 529 530 // check calling permissions 531 if (!settingsAllowed()) { 532 return PERMISSION_DENIED; 533 } 534 535 // when hw supports master volume, don't scale in sw mixer 536 { // scope for the lock 537 AutoMutex lock(mHardwareLock); 538 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 539 if (mPrimaryHardwareDev->set_master_volume(mPrimaryHardwareDev, value) == NO_ERROR) { 540 value = 1.0f; 541 } 542 mHardwareStatus = AUDIO_HW_IDLE; 543 } 544 545 Mutex::Autolock _l(mLock); 546 mMasterVolume = value; 547 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 548 mPlaybackThreads.valueAt(i)->setMasterVolume(value); 549 550 return NO_ERROR; 551} 552 553status_t AudioFlinger::setMode(int mode) 554{ 555 status_t ret = initCheck(); 556 if (ret != NO_ERROR) { 557 return ret; 558 } 559 560 // check calling permissions 561 if (!settingsAllowed()) { 562 return PERMISSION_DENIED; 563 } 564 if ((mode < 0) || (mode >= AUDIO_MODE_CNT)) { 565 LOGW("Illegal value: setMode(%d)", mode); 566 return BAD_VALUE; 567 } 568 569 { // scope for the lock 570 AutoMutex lock(mHardwareLock); 571 mHardwareStatus = AUDIO_HW_SET_MODE; 572 ret = mPrimaryHardwareDev->set_mode(mPrimaryHardwareDev, mode); 573 mHardwareStatus = AUDIO_HW_IDLE; 574 } 575 576 if (NO_ERROR == ret) { 577 Mutex::Autolock _l(mLock); 578 mMode = mode; 579 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 580 mPlaybackThreads.valueAt(i)->setMode(mode); 581 } 582 583 return ret; 584} 585 586status_t AudioFlinger::setMicMute(bool state) 587{ 588 status_t ret = initCheck(); 589 if (ret != NO_ERROR) { 590 return ret; 591 } 592 593 // check calling permissions 594 if (!settingsAllowed()) { 595 return PERMISSION_DENIED; 596 } 597 598 AutoMutex lock(mHardwareLock); 599 mHardwareStatus = AUDIO_HW_SET_MIC_MUTE; 600 ret = mPrimaryHardwareDev->set_mic_mute(mPrimaryHardwareDev, state); 601 mHardwareStatus = AUDIO_HW_IDLE; 602 return ret; 603} 604 605bool AudioFlinger::getMicMute() const 606{ 607 status_t ret = initCheck(); 608 if (ret != NO_ERROR) { 609 return false; 610 } 611 612 bool state = AUDIO_MODE_INVALID; 613 mHardwareStatus = AUDIO_HW_GET_MIC_MUTE; 614 mPrimaryHardwareDev->get_mic_mute(mPrimaryHardwareDev, &state); 615 mHardwareStatus = AUDIO_HW_IDLE; 616 return state; 617} 618 619status_t AudioFlinger::setMasterMute(bool muted) 620{ 621 // check calling permissions 622 if (!settingsAllowed()) { 623 return PERMISSION_DENIED; 624 } 625 626 Mutex::Autolock _l(mLock); 627 mMasterMute = muted; 628 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 629 mPlaybackThreads.valueAt(i)->setMasterMute(muted); 630 631 return NO_ERROR; 632} 633 634float AudioFlinger::masterVolume() const 635{ 636 return mMasterVolume; 637} 638 639bool AudioFlinger::masterMute() const 640{ 641 return mMasterMute; 642} 643 644status_t AudioFlinger::setStreamVolume(int stream, float value, int output) 645{ 646 // check calling permissions 647 if (!settingsAllowed()) { 648 return PERMISSION_DENIED; 649 } 650 651 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT) { 652 return BAD_VALUE; 653 } 654 655 AutoMutex lock(mLock); 656 PlaybackThread *thread = NULL; 657 if (output) { 658 thread = checkPlaybackThread_l(output); 659 if (thread == NULL) { 660 return BAD_VALUE; 661 } 662 } 663 664 mStreamTypes[stream].volume = value; 665 666 if (thread == NULL) { 667 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) { 668 mPlaybackThreads.valueAt(i)->setStreamVolume(stream, value); 669 } 670 } else { 671 thread->setStreamVolume(stream, value); 672 } 673 674 return NO_ERROR; 675} 676 677status_t AudioFlinger::setStreamMute(int stream, bool muted) 678{ 679 // check calling permissions 680 if (!settingsAllowed()) { 681 return PERMISSION_DENIED; 682 } 683 684 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT || 685 uint32_t(stream) == AUDIO_STREAM_ENFORCED_AUDIBLE) { 686 return BAD_VALUE; 687 } 688 689 AutoMutex lock(mLock); 690 mStreamTypes[stream].mute = muted; 691 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 692 mPlaybackThreads.valueAt(i)->setStreamMute(stream, muted); 693 694 return NO_ERROR; 695} 696 697float AudioFlinger::streamVolume(int stream, int output) const 698{ 699 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT) { 700 return 0.0f; 701 } 702 703 AutoMutex lock(mLock); 704 float volume; 705 if (output) { 706 PlaybackThread *thread = checkPlaybackThread_l(output); 707 if (thread == NULL) { 708 return 0.0f; 709 } 710 volume = thread->streamVolume(stream); 711 } else { 712 volume = mStreamTypes[stream].volume; 713 } 714 715 return volume; 716} 717 718bool AudioFlinger::streamMute(int stream) const 719{ 720 if (stream < 0 || stream >= (int)AUDIO_STREAM_CNT) { 721 return true; 722 } 723 724 return mStreamTypes[stream].mute; 725} 726 727status_t AudioFlinger::setParameters(int ioHandle, const String8& keyValuePairs) 728{ 729 status_t result; 730 731 LOGV("setParameters(): io %d, keyvalue %s, tid %d, calling tid %d", 732 ioHandle, keyValuePairs.string(), gettid(), IPCThreadState::self()->getCallingPid()); 733 // check calling permissions 734 if (!settingsAllowed()) { 735 return PERMISSION_DENIED; 736 } 737 738 // ioHandle == 0 means the parameters are global to the audio hardware interface 739 if (ioHandle == 0) { 740 AutoMutex lock(mHardwareLock); 741 mHardwareStatus = AUDIO_SET_PARAMETER; 742 status_t final_result = NO_ERROR; 743 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 744 audio_hw_device_t *dev = mAudioHwDevs[i]; 745 result = dev->set_parameters(dev, keyValuePairs.string()); 746 final_result = result ?: final_result; 747 } 748 mHardwareStatus = AUDIO_HW_IDLE; 749 // disable AEC and NS if the device is a BT SCO headset supporting those pre processings 750 AudioParameter param = AudioParameter(keyValuePairs); 751 String8 value; 752 if (param.get(String8(AUDIO_PARAMETER_KEY_BT_NREC), value) == NO_ERROR) { 753 Mutex::Autolock _l(mLock); 754 bool btNrecIsOff = (value == AUDIO_PARAMETER_VALUE_OFF); 755 if (mBtNrecIsOff != btNrecIsOff) { 756 for (size_t i = 0; i < mRecordThreads.size(); i++) { 757 sp<RecordThread> thread = mRecordThreads.valueAt(i); 758 RecordThread::RecordTrack *track = thread->track(); 759 if (track != NULL) { 760 audio_devices_t device = (audio_devices_t)( 761 thread->device() & AUDIO_DEVICE_IN_ALL); 762 bool suspend = audio_is_bluetooth_sco_device(device) && btNrecIsOff; 763 thread->setEffectSuspended(FX_IID_AEC, 764 suspend, 765 track->sessionId()); 766 thread->setEffectSuspended(FX_IID_NS, 767 suspend, 768 track->sessionId()); 769 } 770 } 771 mBtNrecIsOff = btNrecIsOff; 772 } 773 } 774 return final_result; 775 } 776 777 // hold a strong ref on thread in case closeOutput() or closeInput() is called 778 // and the thread is exited once the lock is released 779 sp<ThreadBase> thread; 780 { 781 Mutex::Autolock _l(mLock); 782 thread = checkPlaybackThread_l(ioHandle); 783 if (thread == NULL) { 784 thread = checkRecordThread_l(ioHandle); 785 } else if (thread.get() == primaryPlaybackThread_l()) { 786 // indicate output device change to all input threads for pre processing 787 AudioParameter param = AudioParameter(keyValuePairs); 788 int value; 789 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 790 for (size_t i = 0; i < mRecordThreads.size(); i++) { 791 mRecordThreads.valueAt(i)->setParameters(keyValuePairs); 792 } 793 } 794 } 795 } 796 if (thread != NULL) { 797 result = thread->setParameters(keyValuePairs); 798 return result; 799 } 800 return BAD_VALUE; 801} 802 803String8 AudioFlinger::getParameters(int ioHandle, const String8& keys) 804{ 805// LOGV("getParameters() io %d, keys %s, tid %d, calling tid %d", 806// ioHandle, keys.string(), gettid(), IPCThreadState::self()->getCallingPid()); 807 808 if (ioHandle == 0) { 809 String8 out_s8; 810 811 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 812 audio_hw_device_t *dev = mAudioHwDevs[i]; 813 char *s = dev->get_parameters(dev, keys.string()); 814 out_s8 += String8(s); 815 free(s); 816 } 817 return out_s8; 818 } 819 820 Mutex::Autolock _l(mLock); 821 822 PlaybackThread *playbackThread = checkPlaybackThread_l(ioHandle); 823 if (playbackThread != NULL) { 824 return playbackThread->getParameters(keys); 825 } 826 RecordThread *recordThread = checkRecordThread_l(ioHandle); 827 if (recordThread != NULL) { 828 return recordThread->getParameters(keys); 829 } 830 return String8(""); 831} 832 833size_t AudioFlinger::getInputBufferSize(uint32_t sampleRate, int format, int channelCount) 834{ 835 status_t ret = initCheck(); 836 if (ret != NO_ERROR) { 837 return 0; 838 } 839 840 return mPrimaryHardwareDev->get_input_buffer_size(mPrimaryHardwareDev, sampleRate, format, channelCount); 841} 842 843unsigned int AudioFlinger::getInputFramesLost(int ioHandle) 844{ 845 if (ioHandle == 0) { 846 return 0; 847 } 848 849 Mutex::Autolock _l(mLock); 850 851 RecordThread *recordThread = checkRecordThread_l(ioHandle); 852 if (recordThread != NULL) { 853 return recordThread->getInputFramesLost(); 854 } 855 return 0; 856} 857 858status_t AudioFlinger::setVoiceVolume(float value) 859{ 860 status_t ret = initCheck(); 861 if (ret != NO_ERROR) { 862 return ret; 863 } 864 865 // check calling permissions 866 if (!settingsAllowed()) { 867 return PERMISSION_DENIED; 868 } 869 870 AutoMutex lock(mHardwareLock); 871 mHardwareStatus = AUDIO_SET_VOICE_VOLUME; 872 ret = mPrimaryHardwareDev->set_voice_volume(mPrimaryHardwareDev, value); 873 mHardwareStatus = AUDIO_HW_IDLE; 874 875 return ret; 876} 877 878status_t AudioFlinger::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output) 879{ 880 status_t status; 881 882 Mutex::Autolock _l(mLock); 883 884 PlaybackThread *playbackThread = checkPlaybackThread_l(output); 885 if (playbackThread != NULL) { 886 return playbackThread->getRenderPosition(halFrames, dspFrames); 887 } 888 889 return BAD_VALUE; 890} 891 892void AudioFlinger::registerClient(const sp<IAudioFlingerClient>& client) 893{ 894 895 Mutex::Autolock _l(mLock); 896 897 int pid = IPCThreadState::self()->getCallingPid(); 898 if (mNotificationClients.indexOfKey(pid) < 0) { 899 sp<NotificationClient> notificationClient = new NotificationClient(this, 900 client, 901 pid); 902 LOGV("registerClient() client %p, pid %d", notificationClient.get(), pid); 903 904 mNotificationClients.add(pid, notificationClient); 905 906 sp<IBinder> binder = client->asBinder(); 907 binder->linkToDeath(notificationClient); 908 909 // the config change is always sent from playback or record threads to avoid deadlock 910 // with AudioSystem::gLock 911 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 912 mPlaybackThreads.valueAt(i)->sendConfigEvent(AudioSystem::OUTPUT_OPENED); 913 } 914 915 for (size_t i = 0; i < mRecordThreads.size(); i++) { 916 mRecordThreads.valueAt(i)->sendConfigEvent(AudioSystem::INPUT_OPENED); 917 } 918 } 919} 920 921void AudioFlinger::removeNotificationClient(pid_t pid) 922{ 923 Mutex::Autolock _l(mLock); 924 925 int index = mNotificationClients.indexOfKey(pid); 926 if (index >= 0) { 927 sp <NotificationClient> client = mNotificationClients.valueFor(pid); 928 LOGV("removeNotificationClient() %p, pid %d", client.get(), pid); 929 mNotificationClients.removeItem(pid); 930 } 931 932 LOGV("%d died, releasing its sessions", pid); 933 int num = mAudioSessionRefs.size(); 934 bool removed = false; 935 for (int i = 0; i< num; i++) { 936 AudioSessionRef *ref = mAudioSessionRefs.itemAt(i); 937 LOGV(" pid %d @ %d", ref->pid, i); 938 if (ref->pid == pid) { 939 LOGV(" removing entry for pid %d session %d", pid, ref->sessionid); 940 mAudioSessionRefs.removeAt(i); 941 delete ref; 942 removed = true; 943 i--; 944 num--; 945 } 946 } 947 if (removed) { 948 purgeStaleEffects_l(); 949 } 950} 951 952// audioConfigChanged_l() must be called with AudioFlinger::mLock held 953void AudioFlinger::audioConfigChanged_l(int event, int ioHandle, void *param2) 954{ 955 size_t size = mNotificationClients.size(); 956 for (size_t i = 0; i < size; i++) { 957 mNotificationClients.valueAt(i)->client()->ioConfigChanged(event, ioHandle, param2); 958 } 959} 960 961// removeClient_l() must be called with AudioFlinger::mLock held 962void AudioFlinger::removeClient_l(pid_t pid) 963{ 964 LOGV("removeClient_l() pid %d, tid %d, calling tid %d", pid, gettid(), IPCThreadState::self()->getCallingPid()); 965 mClients.removeItem(pid); 966} 967 968 969// ---------------------------------------------------------------------------- 970 971AudioFlinger::ThreadBase::ThreadBase(const sp<AudioFlinger>& audioFlinger, int id, uint32_t device) 972 : Thread(false), 973 mAudioFlinger(audioFlinger), mSampleRate(0), mFrameCount(0), mChannelCount(0), 974 mFrameSize(1), mFormat(0), mStandby(false), mId(id), mExiting(false), 975 mDevice(device) 976{ 977 mDeathRecipient = new PMDeathRecipient(this); 978} 979 980AudioFlinger::ThreadBase::~ThreadBase() 981{ 982 mParamCond.broadcast(); 983 mNewParameters.clear(); 984 // do not lock the mutex in destructor 985 releaseWakeLock_l(); 986} 987 988void AudioFlinger::ThreadBase::exit() 989{ 990 // keep a strong ref on ourself so that we wont get 991 // destroyed in the middle of requestExitAndWait() 992 sp <ThreadBase> strongMe = this; 993 994 LOGV("ThreadBase::exit"); 995 { 996 AutoMutex lock(&mLock); 997 mExiting = true; 998 requestExit(); 999 mWaitWorkCV.signal(); 1000 } 1001 requestExitAndWait(); 1002} 1003 1004uint32_t AudioFlinger::ThreadBase::sampleRate() const 1005{ 1006 return mSampleRate; 1007} 1008 1009int AudioFlinger::ThreadBase::channelCount() const 1010{ 1011 return (int)mChannelCount; 1012} 1013 1014uint32_t AudioFlinger::ThreadBase::format() const 1015{ 1016 return mFormat; 1017} 1018 1019size_t AudioFlinger::ThreadBase::frameCount() const 1020{ 1021 return mFrameCount; 1022} 1023 1024status_t AudioFlinger::ThreadBase::setParameters(const String8& keyValuePairs) 1025{ 1026 status_t status; 1027 1028 LOGV("ThreadBase::setParameters() %s", keyValuePairs.string()); 1029 Mutex::Autolock _l(mLock); 1030 1031 mNewParameters.add(keyValuePairs); 1032 mWaitWorkCV.signal(); 1033 // wait condition with timeout in case the thread loop has exited 1034 // before the request could be processed 1035 if (mParamCond.waitRelative(mLock, seconds(2)) == NO_ERROR) { 1036 status = mParamStatus; 1037 mWaitWorkCV.signal(); 1038 } else { 1039 status = TIMED_OUT; 1040 } 1041 return status; 1042} 1043 1044void AudioFlinger::ThreadBase::sendConfigEvent(int event, int param) 1045{ 1046 Mutex::Autolock _l(mLock); 1047 sendConfigEvent_l(event, param); 1048} 1049 1050// sendConfigEvent_l() must be called with ThreadBase::mLock held 1051void AudioFlinger::ThreadBase::sendConfigEvent_l(int event, int param) 1052{ 1053 ConfigEvent *configEvent = new ConfigEvent(); 1054 configEvent->mEvent = event; 1055 configEvent->mParam = param; 1056 mConfigEvents.add(configEvent); 1057 LOGV("sendConfigEvent() num events %d event %d, param %d", mConfigEvents.size(), event, param); 1058 mWaitWorkCV.signal(); 1059} 1060 1061void AudioFlinger::ThreadBase::processConfigEvents() 1062{ 1063 mLock.lock(); 1064 while(!mConfigEvents.isEmpty()) { 1065 LOGV("processConfigEvents() remaining events %d", mConfigEvents.size()); 1066 ConfigEvent *configEvent = mConfigEvents[0]; 1067 mConfigEvents.removeAt(0); 1068 // release mLock before locking AudioFlinger mLock: lock order is always 1069 // AudioFlinger then ThreadBase to avoid cross deadlock 1070 mLock.unlock(); 1071 mAudioFlinger->mLock.lock(); 1072 audioConfigChanged_l(configEvent->mEvent, configEvent->mParam); 1073 mAudioFlinger->mLock.unlock(); 1074 delete configEvent; 1075 mLock.lock(); 1076 } 1077 mLock.unlock(); 1078} 1079 1080status_t AudioFlinger::ThreadBase::dumpBase(int fd, const Vector<String16>& args) 1081{ 1082 const size_t SIZE = 256; 1083 char buffer[SIZE]; 1084 String8 result; 1085 1086 bool locked = tryLock(mLock); 1087 if (!locked) { 1088 snprintf(buffer, SIZE, "thread %p maybe dead locked\n", this); 1089 write(fd, buffer, strlen(buffer)); 1090 } 1091 1092 snprintf(buffer, SIZE, "standby: %d\n", mStandby); 1093 result.append(buffer); 1094 snprintf(buffer, SIZE, "Sample rate: %d\n", mSampleRate); 1095 result.append(buffer); 1096 snprintf(buffer, SIZE, "Frame count: %d\n", mFrameCount); 1097 result.append(buffer); 1098 snprintf(buffer, SIZE, "Channel Count: %d\n", mChannelCount); 1099 result.append(buffer); 1100 snprintf(buffer, SIZE, "Channel Mask: 0x%08x\n", mChannelMask); 1101 result.append(buffer); 1102 snprintf(buffer, SIZE, "Format: %d\n", mFormat); 1103 result.append(buffer); 1104 snprintf(buffer, SIZE, "Frame size: %d\n", mFrameSize); 1105 result.append(buffer); 1106 1107 snprintf(buffer, SIZE, "\nPending setParameters commands: \n"); 1108 result.append(buffer); 1109 result.append(" Index Command"); 1110 for (size_t i = 0; i < mNewParameters.size(); ++i) { 1111 snprintf(buffer, SIZE, "\n %02d ", i); 1112 result.append(buffer); 1113 result.append(mNewParameters[i]); 1114 } 1115 1116 snprintf(buffer, SIZE, "\n\nPending config events: \n"); 1117 result.append(buffer); 1118 snprintf(buffer, SIZE, " Index event param\n"); 1119 result.append(buffer); 1120 for (size_t i = 0; i < mConfigEvents.size(); i++) { 1121 snprintf(buffer, SIZE, " %02d %02d %d\n", i, mConfigEvents[i]->mEvent, mConfigEvents[i]->mParam); 1122 result.append(buffer); 1123 } 1124 result.append("\n"); 1125 1126 write(fd, result.string(), result.size()); 1127 1128 if (locked) { 1129 mLock.unlock(); 1130 } 1131 return NO_ERROR; 1132} 1133 1134status_t AudioFlinger::ThreadBase::dumpEffectChains(int fd, const Vector<String16>& args) 1135{ 1136 const size_t SIZE = 256; 1137 char buffer[SIZE]; 1138 String8 result; 1139 1140 snprintf(buffer, SIZE, "\n- %d Effect Chains:\n", mEffectChains.size()); 1141 write(fd, buffer, strlen(buffer)); 1142 1143 for (size_t i = 0; i < mEffectChains.size(); ++i) { 1144 sp<EffectChain> chain = mEffectChains[i]; 1145 if (chain != 0) { 1146 chain->dump(fd, args); 1147 } 1148 } 1149 return NO_ERROR; 1150} 1151 1152void AudioFlinger::ThreadBase::acquireWakeLock() 1153{ 1154 Mutex::Autolock _l(mLock); 1155 acquireWakeLock_l(); 1156} 1157 1158void AudioFlinger::ThreadBase::acquireWakeLock_l() 1159{ 1160 if (mPowerManager == 0) { 1161 // use checkService() to avoid blocking if power service is not up yet 1162 sp<IBinder> binder = 1163 defaultServiceManager()->checkService(String16("power")); 1164 if (binder == 0) { 1165 LOGW("Thread %s cannot connect to the power manager service", mName); 1166 } else { 1167 mPowerManager = interface_cast<IPowerManager>(binder); 1168 binder->linkToDeath(mDeathRecipient); 1169 } 1170 } 1171 if (mPowerManager != 0) { 1172 sp<IBinder> binder = new BBinder(); 1173 status_t status = mPowerManager->acquireWakeLock(POWERMANAGER_PARTIAL_WAKE_LOCK, 1174 binder, 1175 String16(mName)); 1176 if (status == NO_ERROR) { 1177 mWakeLockToken = binder; 1178 } 1179 LOGV("acquireWakeLock_l() %s status %d", mName, status); 1180 } 1181} 1182 1183void AudioFlinger::ThreadBase::releaseWakeLock() 1184{ 1185 Mutex::Autolock _l(mLock); 1186 releaseWakeLock_l(); 1187} 1188 1189void AudioFlinger::ThreadBase::releaseWakeLock_l() 1190{ 1191 if (mWakeLockToken != 0) { 1192 LOGV("releaseWakeLock_l() %s", mName); 1193 if (mPowerManager != 0) { 1194 mPowerManager->releaseWakeLock(mWakeLockToken, 0); 1195 } 1196 mWakeLockToken.clear(); 1197 } 1198} 1199 1200void AudioFlinger::ThreadBase::clearPowerManager() 1201{ 1202 Mutex::Autolock _l(mLock); 1203 releaseWakeLock_l(); 1204 mPowerManager.clear(); 1205} 1206 1207void AudioFlinger::ThreadBase::PMDeathRecipient::binderDied(const wp<IBinder>& who) 1208{ 1209 sp<ThreadBase> thread = mThread.promote(); 1210 if (thread != 0) { 1211 thread->clearPowerManager(); 1212 } 1213 LOGW("power manager service died !!!"); 1214} 1215 1216void AudioFlinger::ThreadBase::setEffectSuspended( 1217 const effect_uuid_t *type, bool suspend, int sessionId) 1218{ 1219 Mutex::Autolock _l(mLock); 1220 setEffectSuspended_l(type, suspend, sessionId); 1221} 1222 1223void AudioFlinger::ThreadBase::setEffectSuspended_l( 1224 const effect_uuid_t *type, bool suspend, int sessionId) 1225{ 1226 sp<EffectChain> chain; 1227 chain = getEffectChain_l(sessionId); 1228 if (chain != 0) { 1229 if (type != NULL) { 1230 chain->setEffectSuspended_l(type, suspend); 1231 } else { 1232 chain->setEffectSuspendedAll_l(suspend); 1233 } 1234 } 1235 1236 updateSuspendedSessions_l(type, suspend, sessionId); 1237} 1238 1239void AudioFlinger::ThreadBase::checkSuspendOnAddEffectChain_l(const sp<EffectChain>& chain) 1240{ 1241 int index = mSuspendedSessions.indexOfKey(chain->sessionId()); 1242 if (index < 0) { 1243 return; 1244 } 1245 1246 KeyedVector <int, sp<SuspendedSessionDesc> > sessionEffects = 1247 mSuspendedSessions.editValueAt(index); 1248 1249 for (size_t i = 0; i < sessionEffects.size(); i++) { 1250 sp <SuspendedSessionDesc> desc = sessionEffects.valueAt(i); 1251 for (int j = 0; j < desc->mRefCount; j++) { 1252 if (sessionEffects.keyAt(i) == EffectChain::kKeyForSuspendAll) { 1253 chain->setEffectSuspendedAll_l(true); 1254 } else { 1255 LOGV("checkSuspendOnAddEffectChain_l() suspending effects %08x", 1256 desc->mType.timeLow); 1257 chain->setEffectSuspended_l(&desc->mType, true); 1258 } 1259 } 1260 } 1261} 1262 1263void AudioFlinger::ThreadBase::updateSuspendedSessions_l(const effect_uuid_t *type, 1264 bool suspend, 1265 int sessionId) 1266{ 1267 int index = mSuspendedSessions.indexOfKey(sessionId); 1268 1269 KeyedVector <int, sp<SuspendedSessionDesc> > sessionEffects; 1270 1271 if (suspend) { 1272 if (index >= 0) { 1273 sessionEffects = mSuspendedSessions.editValueAt(index); 1274 } else { 1275 mSuspendedSessions.add(sessionId, sessionEffects); 1276 } 1277 } else { 1278 if (index < 0) { 1279 return; 1280 } 1281 sessionEffects = mSuspendedSessions.editValueAt(index); 1282 } 1283 1284 1285 int key = EffectChain::kKeyForSuspendAll; 1286 if (type != NULL) { 1287 key = type->timeLow; 1288 } 1289 index = sessionEffects.indexOfKey(key); 1290 1291 sp <SuspendedSessionDesc> desc; 1292 if (suspend) { 1293 if (index >= 0) { 1294 desc = sessionEffects.valueAt(index); 1295 } else { 1296 desc = new SuspendedSessionDesc(); 1297 if (type != NULL) { 1298 memcpy(&desc->mType, type, sizeof(effect_uuid_t)); 1299 } 1300 sessionEffects.add(key, desc); 1301 LOGV("updateSuspendedSessions_l() suspend adding effect %08x", key); 1302 } 1303 desc->mRefCount++; 1304 } else { 1305 if (index < 0) { 1306 return; 1307 } 1308 desc = sessionEffects.valueAt(index); 1309 if (--desc->mRefCount == 0) { 1310 LOGV("updateSuspendedSessions_l() restore removing effect %08x", key); 1311 sessionEffects.removeItemsAt(index); 1312 if (sessionEffects.isEmpty()) { 1313 LOGV("updateSuspendedSessions_l() restore removing session %d", 1314 sessionId); 1315 mSuspendedSessions.removeItem(sessionId); 1316 } 1317 } 1318 } 1319 if (!sessionEffects.isEmpty()) { 1320 mSuspendedSessions.replaceValueFor(sessionId, sessionEffects); 1321 } 1322} 1323 1324void AudioFlinger::ThreadBase::checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 1325 bool enabled, 1326 int sessionId) 1327{ 1328 Mutex::Autolock _l(mLock); 1329 1330 if (mType != RECORD) { 1331 // suspend all effects in AUDIO_SESSION_OUTPUT_MIX when enabling any effect on 1332 // another session. This gives the priority to well behaved effect control panels 1333 // and applications not using global effects. 1334 if (sessionId != AUDIO_SESSION_OUTPUT_MIX) { 1335 setEffectSuspended_l(NULL, enabled, AUDIO_SESSION_OUTPUT_MIX); 1336 } 1337 } 1338 1339 sp<EffectChain> chain = getEffectChain_l(sessionId); 1340 if (chain != 0) { 1341 chain->checkSuspendOnEffectEnabled(effect, enabled); 1342 } 1343} 1344 1345// ---------------------------------------------------------------------------- 1346 1347AudioFlinger::PlaybackThread::PlaybackThread(const sp<AudioFlinger>& audioFlinger, 1348 AudioStreamOut* output, 1349 int id, 1350 uint32_t device) 1351 : ThreadBase(audioFlinger, id, device), 1352 mMixBuffer(0), mSuspended(0), mBytesWritten(0), mOutput(output), 1353 mLastWriteTime(0), mNumWrites(0), mNumDelayedWrites(0), mInWrite(false) 1354{ 1355 snprintf(mName, kNameLength, "AudioOut_%d", id); 1356 1357 readOutputParameters(); 1358 1359 mMasterVolume = mAudioFlinger->masterVolume(); 1360 mMasterMute = mAudioFlinger->masterMute(); 1361 1362 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 1363 mStreamTypes[stream].volume = mAudioFlinger->streamVolumeInternal(stream); 1364 mStreamTypes[stream].mute = mAudioFlinger->streamMute(stream); 1365 } 1366} 1367 1368AudioFlinger::PlaybackThread::~PlaybackThread() 1369{ 1370 delete [] mMixBuffer; 1371} 1372 1373status_t AudioFlinger::PlaybackThread::dump(int fd, const Vector<String16>& args) 1374{ 1375 dumpInternals(fd, args); 1376 dumpTracks(fd, args); 1377 dumpEffectChains(fd, args); 1378 return NO_ERROR; 1379} 1380 1381status_t AudioFlinger::PlaybackThread::dumpTracks(int fd, const Vector<String16>& args) 1382{ 1383 const size_t SIZE = 256; 1384 char buffer[SIZE]; 1385 String8 result; 1386 1387 snprintf(buffer, SIZE, "Output thread %p tracks\n", this); 1388 result.append(buffer); 1389 result.append(" Name Clien Typ Fmt Chn mask Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 1390 for (size_t i = 0; i < mTracks.size(); ++i) { 1391 sp<Track> track = mTracks[i]; 1392 if (track != 0) { 1393 track->dump(buffer, SIZE); 1394 result.append(buffer); 1395 } 1396 } 1397 1398 snprintf(buffer, SIZE, "Output thread %p active tracks\n", this); 1399 result.append(buffer); 1400 result.append(" Name Clien Typ Fmt Chn mask Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 1401 for (size_t i = 0; i < mActiveTracks.size(); ++i) { 1402 wp<Track> wTrack = mActiveTracks[i]; 1403 if (wTrack != 0) { 1404 sp<Track> track = wTrack.promote(); 1405 if (track != 0) { 1406 track->dump(buffer, SIZE); 1407 result.append(buffer); 1408 } 1409 } 1410 } 1411 write(fd, result.string(), result.size()); 1412 return NO_ERROR; 1413} 1414 1415status_t AudioFlinger::PlaybackThread::dumpInternals(int fd, const Vector<String16>& args) 1416{ 1417 const size_t SIZE = 256; 1418 char buffer[SIZE]; 1419 String8 result; 1420 1421 snprintf(buffer, SIZE, "\nOutput thread %p internals\n", this); 1422 result.append(buffer); 1423 snprintf(buffer, SIZE, "last write occurred (msecs): %llu\n", ns2ms(systemTime() - mLastWriteTime)); 1424 result.append(buffer); 1425 snprintf(buffer, SIZE, "total writes: %d\n", mNumWrites); 1426 result.append(buffer); 1427 snprintf(buffer, SIZE, "delayed writes: %d\n", mNumDelayedWrites); 1428 result.append(buffer); 1429 snprintf(buffer, SIZE, "blocked in write: %d\n", mInWrite); 1430 result.append(buffer); 1431 snprintf(buffer, SIZE, "suspend count: %d\n", mSuspended); 1432 result.append(buffer); 1433 snprintf(buffer, SIZE, "mix buffer : %p\n", mMixBuffer); 1434 result.append(buffer); 1435 write(fd, result.string(), result.size()); 1436 1437 dumpBase(fd, args); 1438 1439 return NO_ERROR; 1440} 1441 1442// Thread virtuals 1443status_t AudioFlinger::PlaybackThread::readyToRun() 1444{ 1445 status_t status = initCheck(); 1446 if (status == NO_ERROR) { 1447 LOGI("AudioFlinger's thread %p ready to run", this); 1448 } else { 1449 LOGE("No working audio driver found."); 1450 } 1451 return status; 1452} 1453 1454void AudioFlinger::PlaybackThread::onFirstRef() 1455{ 1456 run(mName, ANDROID_PRIORITY_URGENT_AUDIO); 1457} 1458 1459// PlaybackThread::createTrack_l() must be called with AudioFlinger::mLock held 1460sp<AudioFlinger::PlaybackThread::Track> AudioFlinger::PlaybackThread::createTrack_l( 1461 const sp<AudioFlinger::Client>& client, 1462 int streamType, 1463 uint32_t sampleRate, 1464 uint32_t format, 1465 uint32_t channelMask, 1466 int frameCount, 1467 const sp<IMemory>& sharedBuffer, 1468 int sessionId, 1469 status_t *status) 1470{ 1471 sp<Track> track; 1472 status_t lStatus; 1473 1474 if (mType == DIRECT) { 1475 if ((format & AUDIO_FORMAT_MAIN_MASK) == AUDIO_FORMAT_PCM) { 1476 if (sampleRate != mSampleRate || format != mFormat || channelMask != mChannelMask) { 1477 LOGE("createTrack_l() Bad parameter: sampleRate %d format %d, channelMask 0x%08x \"" 1478 "for output %p with format %d", 1479 sampleRate, format, channelMask, mOutput, mFormat); 1480 lStatus = BAD_VALUE; 1481 goto Exit; 1482 } 1483 } 1484 } else { 1485 // Resampler implementation limits input sampling rate to 2 x output sampling rate. 1486 if (sampleRate > mSampleRate*2) { 1487 LOGE("Sample rate out of range: %d mSampleRate %d", sampleRate, mSampleRate); 1488 lStatus = BAD_VALUE; 1489 goto Exit; 1490 } 1491 } 1492 1493 lStatus = initCheck(); 1494 if (lStatus != NO_ERROR) { 1495 LOGE("Audio driver not initialized."); 1496 goto Exit; 1497 } 1498 1499 { // scope for mLock 1500 Mutex::Autolock _l(mLock); 1501 1502 // all tracks in same audio session must share the same routing strategy otherwise 1503 // conflicts will happen when tracks are moved from one output to another by audio policy 1504 // manager 1505 uint32_t strategy = 1506 AudioSystem::getStrategyForStream((audio_stream_type_t)streamType); 1507 for (size_t i = 0; i < mTracks.size(); ++i) { 1508 sp<Track> t = mTracks[i]; 1509 if (t != 0) { 1510 if (sessionId == t->sessionId() && 1511 strategy != AudioSystem::getStrategyForStream((audio_stream_type_t)t->type())) { 1512 lStatus = BAD_VALUE; 1513 goto Exit; 1514 } 1515 } 1516 } 1517 1518 track = new Track(this, client, streamType, sampleRate, format, 1519 channelMask, frameCount, sharedBuffer, sessionId); 1520 if (track->getCblk() == NULL || track->name() < 0) { 1521 lStatus = NO_MEMORY; 1522 goto Exit; 1523 } 1524 mTracks.add(track); 1525 1526 sp<EffectChain> chain = getEffectChain_l(sessionId); 1527 if (chain != 0) { 1528 LOGV("createTrack_l() setting main buffer %p", chain->inBuffer()); 1529 track->setMainBuffer(chain->inBuffer()); 1530 chain->setStrategy(AudioSystem::getStrategyForStream((audio_stream_type_t)track->type())); 1531 chain->incTrackCnt(); 1532 } 1533 } 1534 lStatus = NO_ERROR; 1535 1536Exit: 1537 if(status) { 1538 *status = lStatus; 1539 } 1540 return track; 1541} 1542 1543uint32_t AudioFlinger::PlaybackThread::latency() const 1544{ 1545 Mutex::Autolock _l(mLock); 1546 if (initCheck() == NO_ERROR) { 1547 return mOutput->stream->get_latency(mOutput->stream); 1548 } else { 1549 return 0; 1550 } 1551} 1552 1553status_t AudioFlinger::PlaybackThread::setMasterVolume(float value) 1554{ 1555 mMasterVolume = value; 1556 return NO_ERROR; 1557} 1558 1559status_t AudioFlinger::PlaybackThread::setMasterMute(bool muted) 1560{ 1561 mMasterMute = muted; 1562 return NO_ERROR; 1563} 1564 1565float AudioFlinger::PlaybackThread::masterVolume() const 1566{ 1567 return mMasterVolume; 1568} 1569 1570bool AudioFlinger::PlaybackThread::masterMute() const 1571{ 1572 return mMasterMute; 1573} 1574 1575status_t AudioFlinger::PlaybackThread::setStreamVolume(int stream, float value) 1576{ 1577 mStreamTypes[stream].volume = value; 1578 return NO_ERROR; 1579} 1580 1581status_t AudioFlinger::PlaybackThread::setStreamMute(int stream, bool muted) 1582{ 1583 mStreamTypes[stream].mute = muted; 1584 return NO_ERROR; 1585} 1586 1587float AudioFlinger::PlaybackThread::streamVolume(int stream) const 1588{ 1589 return mStreamTypes[stream].volume; 1590} 1591 1592bool AudioFlinger::PlaybackThread::streamMute(int stream) const 1593{ 1594 return mStreamTypes[stream].mute; 1595} 1596 1597// addTrack_l() must be called with ThreadBase::mLock held 1598status_t AudioFlinger::PlaybackThread::addTrack_l(const sp<Track>& track) 1599{ 1600 status_t status = ALREADY_EXISTS; 1601 1602 // set retry count for buffer fill 1603 track->mRetryCount = kMaxTrackStartupRetries; 1604 if (mActiveTracks.indexOf(track) < 0) { 1605 // the track is newly added, make sure it fills up all its 1606 // buffers before playing. This is to ensure the client will 1607 // effectively get the latency it requested. 1608 track->mFillingUpStatus = Track::FS_FILLING; 1609 track->mResetDone = false; 1610 mActiveTracks.add(track); 1611 if (track->mainBuffer() != mMixBuffer) { 1612 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1613 if (chain != 0) { 1614 LOGV("addTrack_l() starting track on chain %p for session %d", chain.get(), track->sessionId()); 1615 chain->incActiveTrackCnt(); 1616 } 1617 } 1618 1619 status = NO_ERROR; 1620 } 1621 1622 LOGV("mWaitWorkCV.broadcast"); 1623 mWaitWorkCV.broadcast(); 1624 1625 return status; 1626} 1627 1628// destroyTrack_l() must be called with ThreadBase::mLock held 1629void AudioFlinger::PlaybackThread::destroyTrack_l(const sp<Track>& track) 1630{ 1631 track->mState = TrackBase::TERMINATED; 1632 if (mActiveTracks.indexOf(track) < 0) { 1633 removeTrack_l(track); 1634 } 1635} 1636 1637void AudioFlinger::PlaybackThread::removeTrack_l(const sp<Track>& track) 1638{ 1639 mTracks.remove(track); 1640 deleteTrackName_l(track->name()); 1641 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1642 if (chain != 0) { 1643 chain->decTrackCnt(); 1644 } 1645} 1646 1647String8 AudioFlinger::PlaybackThread::getParameters(const String8& keys) 1648{ 1649 String8 out_s8 = String8(""); 1650 char *s; 1651 1652 Mutex::Autolock _l(mLock); 1653 if (initCheck() != NO_ERROR) { 1654 return out_s8; 1655 } 1656 1657 s = mOutput->stream->common.get_parameters(&mOutput->stream->common, keys.string()); 1658 out_s8 = String8(s); 1659 free(s); 1660 return out_s8; 1661} 1662 1663// audioConfigChanged_l() must be called with AudioFlinger::mLock held 1664void AudioFlinger::PlaybackThread::audioConfigChanged_l(int event, int param) { 1665 AudioSystem::OutputDescriptor desc; 1666 void *param2 = 0; 1667 1668 LOGV("PlaybackThread::audioConfigChanged_l, thread %p, event %d, param %d", this, event, param); 1669 1670 switch (event) { 1671 case AudioSystem::OUTPUT_OPENED: 1672 case AudioSystem::OUTPUT_CONFIG_CHANGED: 1673 desc.channels = mChannelMask; 1674 desc.samplingRate = mSampleRate; 1675 desc.format = mFormat; 1676 desc.frameCount = mFrameCount; 1677 desc.latency = latency(); 1678 param2 = &desc; 1679 break; 1680 1681 case AudioSystem::STREAM_CONFIG_CHANGED: 1682 param2 = ¶m; 1683 case AudioSystem::OUTPUT_CLOSED: 1684 default: 1685 break; 1686 } 1687 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 1688} 1689 1690void AudioFlinger::PlaybackThread::readOutputParameters() 1691{ 1692 mSampleRate = mOutput->stream->common.get_sample_rate(&mOutput->stream->common); 1693 mChannelMask = mOutput->stream->common.get_channels(&mOutput->stream->common); 1694 mChannelCount = (uint16_t)popcount(mChannelMask); 1695 mFormat = mOutput->stream->common.get_format(&mOutput->stream->common); 1696 mFrameSize = (uint16_t)audio_stream_frame_size(&mOutput->stream->common); 1697 mFrameCount = mOutput->stream->common.get_buffer_size(&mOutput->stream->common) / mFrameSize; 1698 1699 // FIXME - Current mixer implementation only supports stereo output: Always 1700 // Allocate a stereo buffer even if HW output is mono. 1701 if (mMixBuffer != NULL) delete[] mMixBuffer; 1702 mMixBuffer = new int16_t[mFrameCount * 2]; 1703 memset(mMixBuffer, 0, mFrameCount * 2 * sizeof(int16_t)); 1704 1705 // force reconfiguration of effect chains and engines to take new buffer size and audio 1706 // parameters into account 1707 // Note that mLock is not held when readOutputParameters() is called from the constructor 1708 // but in this case nothing is done below as no audio sessions have effect yet so it doesn't 1709 // matter. 1710 // create a copy of mEffectChains as calling moveEffectChain_l() can reorder some effect chains 1711 Vector< sp<EffectChain> > effectChains = mEffectChains; 1712 for (size_t i = 0; i < effectChains.size(); i ++) { 1713 mAudioFlinger->moveEffectChain_l(effectChains[i]->sessionId(), this, this, false); 1714 } 1715} 1716 1717status_t AudioFlinger::PlaybackThread::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames) 1718{ 1719 if (halFrames == 0 || dspFrames == 0) { 1720 return BAD_VALUE; 1721 } 1722 Mutex::Autolock _l(mLock); 1723 if (initCheck() != NO_ERROR) { 1724 return INVALID_OPERATION; 1725 } 1726 *halFrames = mBytesWritten / audio_stream_frame_size(&mOutput->stream->common); 1727 1728 return mOutput->stream->get_render_position(mOutput->stream, dspFrames); 1729} 1730 1731uint32_t AudioFlinger::PlaybackThread::hasAudioSession(int sessionId) 1732{ 1733 Mutex::Autolock _l(mLock); 1734 uint32_t result = 0; 1735 if (getEffectChain_l(sessionId) != 0) { 1736 result = EFFECT_SESSION; 1737 } 1738 1739 for (size_t i = 0; i < mTracks.size(); ++i) { 1740 sp<Track> track = mTracks[i]; 1741 if (sessionId == track->sessionId() && 1742 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1743 result |= TRACK_SESSION; 1744 break; 1745 } 1746 } 1747 1748 return result; 1749} 1750 1751uint32_t AudioFlinger::PlaybackThread::getStrategyForSession_l(int sessionId) 1752{ 1753 // session AUDIO_SESSION_OUTPUT_MIX is placed in same strategy as MUSIC stream so that 1754 // it is moved to correct output by audio policy manager when A2DP is connected or disconnected 1755 if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 1756 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1757 } 1758 for (size_t i = 0; i < mTracks.size(); i++) { 1759 sp<Track> track = mTracks[i]; 1760 if (sessionId == track->sessionId() && 1761 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1762 return AudioSystem::getStrategyForStream((audio_stream_type_t) track->type()); 1763 } 1764 } 1765 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1766} 1767 1768 1769AudioFlinger::AudioStreamOut* AudioFlinger::PlaybackThread::getOutput() 1770{ 1771 Mutex::Autolock _l(mLock); 1772 return mOutput; 1773} 1774 1775AudioFlinger::AudioStreamOut* AudioFlinger::PlaybackThread::clearOutput() 1776{ 1777 Mutex::Autolock _l(mLock); 1778 AudioStreamOut *output = mOutput; 1779 mOutput = NULL; 1780 return output; 1781} 1782 1783// this method must always be called either with ThreadBase mLock held or inside the thread loop 1784audio_stream_t* AudioFlinger::PlaybackThread::stream() 1785{ 1786 if (mOutput == NULL) { 1787 return NULL; 1788 } 1789 return &mOutput->stream->common; 1790} 1791 1792// ---------------------------------------------------------------------------- 1793 1794AudioFlinger::MixerThread::MixerThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 1795 : PlaybackThread(audioFlinger, output, id, device), 1796 mAudioMixer(0) 1797{ 1798 mType = ThreadBase::MIXER; 1799 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 1800 1801 // FIXME - Current mixer implementation only supports stereo output 1802 if (mChannelCount == 1) { 1803 LOGE("Invalid audio hardware channel count"); 1804 } 1805} 1806 1807AudioFlinger::MixerThread::~MixerThread() 1808{ 1809 delete mAudioMixer; 1810} 1811 1812bool AudioFlinger::MixerThread::threadLoop() 1813{ 1814 Vector< sp<Track> > tracksToRemove; 1815 uint32_t mixerStatus = MIXER_IDLE; 1816 nsecs_t standbyTime = systemTime(); 1817 size_t mixBufferSize = mFrameCount * mFrameSize; 1818 // FIXME: Relaxed timing because of a certain device that can't meet latency 1819 // Should be reduced to 2x after the vendor fixes the driver issue 1820 nsecs_t maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1821 nsecs_t lastWarning = 0; 1822 bool longStandbyExit = false; 1823 uint32_t activeSleepTime = activeSleepTimeUs(); 1824 uint32_t idleSleepTime = idleSleepTimeUs(); 1825 uint32_t sleepTime = idleSleepTime; 1826 Vector< sp<EffectChain> > effectChains; 1827#ifdef DEBUG_CPU_USAGE 1828 ThreadCpuUsage cpu; 1829 const CentralTendencyStatistics& stats = cpu.statistics(); 1830#endif 1831 1832 acquireWakeLock(); 1833 1834 while (!exitPending()) 1835 { 1836#ifdef DEBUG_CPU_USAGE 1837 cpu.sampleAndEnable(); 1838 unsigned n = stats.n(); 1839 // cpu.elapsed() is expensive, so don't call it every loop 1840 if ((n & 127) == 1) { 1841 long long elapsed = cpu.elapsed(); 1842 if (elapsed >= DEBUG_CPU_USAGE * 1000000000LL) { 1843 double perLoop = elapsed / (double) n; 1844 double perLoop100 = perLoop * 0.01; 1845 double mean = stats.mean(); 1846 double stddev = stats.stddev(); 1847 double minimum = stats.minimum(); 1848 double maximum = stats.maximum(); 1849 cpu.resetStatistics(); 1850 LOGI("CPU usage over past %.1f secs (%u mixer loops at %.1f mean ms per loop):\n us per mix loop: mean=%.0f stddev=%.0f min=%.0f max=%.0f\n %% of wall: mean=%.1f stddev=%.1f min=%.1f max=%.1f", 1851 elapsed * .000000001, n, perLoop * .000001, 1852 mean * .001, 1853 stddev * .001, 1854 minimum * .001, 1855 maximum * .001, 1856 mean / perLoop100, 1857 stddev / perLoop100, 1858 minimum / perLoop100, 1859 maximum / perLoop100); 1860 } 1861 } 1862#endif 1863 processConfigEvents(); 1864 1865 mixerStatus = MIXER_IDLE; 1866 { // scope for mLock 1867 1868 Mutex::Autolock _l(mLock); 1869 1870 if (checkForNewParameters_l()) { 1871 mixBufferSize = mFrameCount * mFrameSize; 1872 // FIXME: Relaxed timing because of a certain device that can't meet latency 1873 // Should be reduced to 2x after the vendor fixes the driver issue 1874 maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1875 activeSleepTime = activeSleepTimeUs(); 1876 idleSleepTime = idleSleepTimeUs(); 1877 } 1878 1879 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 1880 1881 // put audio hardware into standby after short delay 1882 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 1883 mSuspended) { 1884 if (!mStandby) { 1885 LOGV("Audio hardware entering standby, mixer %p, mSuspended %d\n", this, mSuspended); 1886 mOutput->stream->common.standby(&mOutput->stream->common); 1887 mStandby = true; 1888 mBytesWritten = 0; 1889 } 1890 1891 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 1892 // we're about to wait, flush the binder command buffer 1893 IPCThreadState::self()->flushCommands(); 1894 1895 if (exitPending()) break; 1896 1897 releaseWakeLock_l(); 1898 // wait until we have something to do... 1899 LOGV("MixerThread %p TID %d going to sleep\n", this, gettid()); 1900 mWaitWorkCV.wait(mLock); 1901 LOGV("MixerThread %p TID %d waking up\n", this, gettid()); 1902 acquireWakeLock_l(); 1903 1904 if (mMasterMute == false) { 1905 char value[PROPERTY_VALUE_MAX]; 1906 property_get("ro.audio.silent", value, "0"); 1907 if (atoi(value)) { 1908 LOGD("Silence is golden"); 1909 setMasterMute(true); 1910 } 1911 } 1912 1913 standbyTime = systemTime() + kStandbyTimeInNsecs; 1914 sleepTime = idleSleepTime; 1915 continue; 1916 } 1917 } 1918 1919 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 1920 1921 // prevent any changes in effect chain list and in each effect chain 1922 // during mixing and effect process as the audio buffers could be deleted 1923 // or modified if an effect is created or deleted 1924 lockEffectChains_l(effectChains); 1925 } 1926 1927 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 1928 // mix buffers... 1929 mAudioMixer->process(); 1930 sleepTime = 0; 1931 standbyTime = systemTime() + kStandbyTimeInNsecs; 1932 //TODO: delay standby when effects have a tail 1933 } else { 1934 // If no tracks are ready, sleep once for the duration of an output 1935 // buffer size, then write 0s to the output 1936 if (sleepTime == 0) { 1937 if (mixerStatus == MIXER_TRACKS_ENABLED) { 1938 sleepTime = activeSleepTime; 1939 } else { 1940 sleepTime = idleSleepTime; 1941 } 1942 } else if (mBytesWritten != 0 || 1943 (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)) { 1944 memset (mMixBuffer, 0, mixBufferSize); 1945 sleepTime = 0; 1946 LOGV_IF((mBytesWritten == 0 && (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)), "anticipated start"); 1947 } 1948 // TODO add standby time extension fct of effect tail 1949 } 1950 1951 if (mSuspended) { 1952 sleepTime = suspendSleepTimeUs(); 1953 } 1954 // sleepTime == 0 means we must write to audio hardware 1955 if (sleepTime == 0) { 1956 for (size_t i = 0; i < effectChains.size(); i ++) { 1957 effectChains[i]->process_l(); 1958 } 1959 // enable changes in effect chain 1960 unlockEffectChains(effectChains); 1961 mLastWriteTime = systemTime(); 1962 mInWrite = true; 1963 mBytesWritten += mixBufferSize; 1964 1965 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 1966 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 1967 mNumWrites++; 1968 mInWrite = false; 1969 nsecs_t now = systemTime(); 1970 nsecs_t delta = now - mLastWriteTime; 1971 if (delta > maxPeriod) { 1972 mNumDelayedWrites++; 1973 if ((now - lastWarning) > kWarningThrottle) { 1974 LOGW("write blocked for %llu msecs, %d delayed writes, thread %p", 1975 ns2ms(delta), mNumDelayedWrites, this); 1976 lastWarning = now; 1977 } 1978 if (mStandby) { 1979 longStandbyExit = true; 1980 } 1981 } 1982 mStandby = false; 1983 } else { 1984 // enable changes in effect chain 1985 unlockEffectChains(effectChains); 1986 usleep(sleepTime); 1987 } 1988 1989 // finally let go of all our tracks, without the lock held 1990 // since we can't guarantee the destructors won't acquire that 1991 // same lock. 1992 tracksToRemove.clear(); 1993 1994 // Effect chains will be actually deleted here if they were removed from 1995 // mEffectChains list during mixing or effects processing 1996 effectChains.clear(); 1997 } 1998 1999 if (!mStandby) { 2000 mOutput->stream->common.standby(&mOutput->stream->common); 2001 } 2002 2003 releaseWakeLock(); 2004 2005 LOGV("MixerThread %p exiting", this); 2006 return false; 2007} 2008 2009// prepareTracks_l() must be called with ThreadBase::mLock held 2010uint32_t AudioFlinger::MixerThread::prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, Vector< sp<Track> > *tracksToRemove) 2011{ 2012 2013 uint32_t mixerStatus = MIXER_IDLE; 2014 // find out which tracks need to be processed 2015 size_t count = activeTracks.size(); 2016 size_t mixedTracks = 0; 2017 size_t tracksWithEffect = 0; 2018 2019 float masterVolume = mMasterVolume; 2020 bool masterMute = mMasterMute; 2021 2022 if (masterMute) { 2023 masterVolume = 0; 2024 } 2025 // Delegate master volume control to effect in output mix effect chain if needed 2026 sp<EffectChain> chain = getEffectChain_l(AUDIO_SESSION_OUTPUT_MIX); 2027 if (chain != 0) { 2028 uint32_t v = (uint32_t)(masterVolume * (1 << 24)); 2029 chain->setVolume_l(&v, &v); 2030 masterVolume = (float)((v + (1 << 23)) >> 24); 2031 chain.clear(); 2032 } 2033 2034 for (size_t i=0 ; i<count ; i++) { 2035 sp<Track> t = activeTracks[i].promote(); 2036 if (t == 0) continue; 2037 2038 Track* const track = t.get(); 2039 audio_track_cblk_t* cblk = track->cblk(); 2040 2041 // The first time a track is added we wait 2042 // for all its buffers to be filled before processing it 2043 mAudioMixer->setActiveTrack(track->name()); 2044 if (cblk->framesReady() && track->isReady() && 2045 !track->isPaused() && !track->isTerminated()) 2046 { 2047 //LOGV("track %d u=%08x, s=%08x [OK] on thread %p", track->name(), cblk->user, cblk->server, this); 2048 2049 mixedTracks++; 2050 2051 // track->mainBuffer() != mMixBuffer means there is an effect chain 2052 // connected to the track 2053 chain.clear(); 2054 if (track->mainBuffer() != mMixBuffer) { 2055 chain = getEffectChain_l(track->sessionId()); 2056 // Delegate volume control to effect in track effect chain if needed 2057 if (chain != 0) { 2058 tracksWithEffect++; 2059 } else { 2060 LOGW("prepareTracks_l(): track %08x attached to effect but no chain found on session %d", 2061 track->name(), track->sessionId()); 2062 } 2063 } 2064 2065 2066 int param = AudioMixer::VOLUME; 2067 if (track->mFillingUpStatus == Track::FS_FILLED) { 2068 // no ramp for the first volume setting 2069 track->mFillingUpStatus = Track::FS_ACTIVE; 2070 if (track->mState == TrackBase::RESUMING) { 2071 track->mState = TrackBase::ACTIVE; 2072 param = AudioMixer::RAMP_VOLUME; 2073 } 2074 mAudioMixer->setParameter(AudioMixer::RESAMPLE, AudioMixer::RESET, NULL); 2075 } else if (cblk->server != 0) { 2076 // If the track is stopped before the first frame was mixed, 2077 // do not apply ramp 2078 param = AudioMixer::RAMP_VOLUME; 2079 } 2080 2081 // compute volume for this track 2082 uint32_t vl, vr, va; 2083 if (track->isMuted() || track->isPausing() || 2084 mStreamTypes[track->type()].mute) { 2085 vl = vr = va = 0; 2086 if (track->isPausing()) { 2087 track->setPaused(); 2088 } 2089 } else { 2090 2091 // read original volumes with volume control 2092 float typeVolume = mStreamTypes[track->type()].volume; 2093 float v = masterVolume * typeVolume; 2094 vl = (uint32_t)(v * cblk->volume[0]) << 12; 2095 vr = (uint32_t)(v * cblk->volume[1]) << 12; 2096 2097 va = (uint32_t)(v * cblk->sendLevel); 2098 } 2099 // Delegate volume control to effect in track effect chain if needed 2100 if (chain != 0 && chain->setVolume_l(&vl, &vr)) { 2101 // Do not ramp volume if volume is controlled by effect 2102 param = AudioMixer::VOLUME; 2103 track->mHasVolumeController = true; 2104 } else { 2105 // force no volume ramp when volume controller was just disabled or removed 2106 // from effect chain to avoid volume spike 2107 if (track->mHasVolumeController) { 2108 param = AudioMixer::VOLUME; 2109 } 2110 track->mHasVolumeController = false; 2111 } 2112 2113 // Convert volumes from 8.24 to 4.12 format 2114 int16_t left, right, aux; 2115 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 2116 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2117 left = int16_t(v_clamped); 2118 v_clamped = (vr + (1 << 11)) >> 12; 2119 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2120 right = int16_t(v_clamped); 2121 2122 if (va > MAX_GAIN_INT) va = MAX_GAIN_INT; 2123 aux = int16_t(va); 2124 2125 // XXX: these things DON'T need to be done each time 2126 mAudioMixer->setBufferProvider(track); 2127 mAudioMixer->enable(AudioMixer::MIXING); 2128 2129 mAudioMixer->setParameter(param, AudioMixer::VOLUME0, (void *)left); 2130 mAudioMixer->setParameter(param, AudioMixer::VOLUME1, (void *)right); 2131 mAudioMixer->setParameter(param, AudioMixer::AUXLEVEL, (void *)aux); 2132 mAudioMixer->setParameter( 2133 AudioMixer::TRACK, 2134 AudioMixer::FORMAT, (void *)track->format()); 2135 mAudioMixer->setParameter( 2136 AudioMixer::TRACK, 2137 AudioMixer::CHANNEL_MASK, (void *)track->channelMask()); 2138 mAudioMixer->setParameter( 2139 AudioMixer::RESAMPLE, 2140 AudioMixer::SAMPLE_RATE, 2141 (void *)(cblk->sampleRate)); 2142 mAudioMixer->setParameter( 2143 AudioMixer::TRACK, 2144 AudioMixer::MAIN_BUFFER, (void *)track->mainBuffer()); 2145 mAudioMixer->setParameter( 2146 AudioMixer::TRACK, 2147 AudioMixer::AUX_BUFFER, (void *)track->auxBuffer()); 2148 2149 // reset retry count 2150 track->mRetryCount = kMaxTrackRetries; 2151 mixerStatus = MIXER_TRACKS_READY; 2152 } else { 2153 //LOGV("track %d u=%08x, s=%08x [NOT READY] on thread %p", track->name(), cblk->user, cblk->server, this); 2154 if (track->isStopped()) { 2155 track->reset(); 2156 } 2157 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 2158 // We have consumed all the buffers of this track. 2159 // Remove it from the list of active tracks. 2160 tracksToRemove->add(track); 2161 } else { 2162 // No buffers for this track. Give it a few chances to 2163 // fill a buffer, then remove it from active list. 2164 if (--(track->mRetryCount) <= 0) { 2165 LOGV("BUFFER TIMEOUT: remove(%d) from active list on thread %p", track->name(), this); 2166 tracksToRemove->add(track); 2167 // indicate to client process that the track was disabled because of underrun 2168 android_atomic_or(CBLK_DISABLED_ON, &cblk->flags); 2169 } else if (mixerStatus != MIXER_TRACKS_READY) { 2170 mixerStatus = MIXER_TRACKS_ENABLED; 2171 } 2172 } 2173 mAudioMixer->disable(AudioMixer::MIXING); 2174 } 2175 } 2176 2177 // remove all the tracks that need to be... 2178 count = tracksToRemove->size(); 2179 if (UNLIKELY(count)) { 2180 for (size_t i=0 ; i<count ; i++) { 2181 const sp<Track>& track = tracksToRemove->itemAt(i); 2182 mActiveTracks.remove(track); 2183 if (track->mainBuffer() != mMixBuffer) { 2184 chain = getEffectChain_l(track->sessionId()); 2185 if (chain != 0) { 2186 LOGV("stopping track on chain %p for session Id: %d", chain.get(), track->sessionId()); 2187 chain->decActiveTrackCnt(); 2188 } 2189 } 2190 if (track->isTerminated()) { 2191 removeTrack_l(track); 2192 } 2193 } 2194 } 2195 2196 // mix buffer must be cleared if all tracks are connected to an 2197 // effect chain as in this case the mixer will not write to 2198 // mix buffer and track effects will accumulate into it 2199 if (mixedTracks != 0 && mixedTracks == tracksWithEffect) { 2200 memset(mMixBuffer, 0, mFrameCount * mChannelCount * sizeof(int16_t)); 2201 } 2202 2203 return mixerStatus; 2204} 2205 2206void AudioFlinger::MixerThread::invalidateTracks(int streamType) 2207{ 2208 LOGV ("MixerThread::invalidateTracks() mixer %p, streamType %d, mTracks.size %d", 2209 this, streamType, mTracks.size()); 2210 Mutex::Autolock _l(mLock); 2211 2212 size_t size = mTracks.size(); 2213 for (size_t i = 0; i < size; i++) { 2214 sp<Track> t = mTracks[i]; 2215 if (t->type() == streamType) { 2216 android_atomic_or(CBLK_INVALID_ON, &t->mCblk->flags); 2217 t->mCblk->cv.signal(); 2218 } 2219 } 2220} 2221 2222 2223// getTrackName_l() must be called with ThreadBase::mLock held 2224int AudioFlinger::MixerThread::getTrackName_l() 2225{ 2226 return mAudioMixer->getTrackName(); 2227} 2228 2229// deleteTrackName_l() must be called with ThreadBase::mLock held 2230void AudioFlinger::MixerThread::deleteTrackName_l(int name) 2231{ 2232 LOGV("remove track (%d) and delete from mixer", name); 2233 mAudioMixer->deleteTrackName(name); 2234} 2235 2236// checkForNewParameters_l() must be called with ThreadBase::mLock held 2237bool AudioFlinger::MixerThread::checkForNewParameters_l() 2238{ 2239 bool reconfig = false; 2240 2241 while (!mNewParameters.isEmpty()) { 2242 status_t status = NO_ERROR; 2243 String8 keyValuePair = mNewParameters[0]; 2244 AudioParameter param = AudioParameter(keyValuePair); 2245 int value; 2246 2247 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 2248 reconfig = true; 2249 } 2250 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 2251 if (value != AUDIO_FORMAT_PCM_16_BIT) { 2252 status = BAD_VALUE; 2253 } else { 2254 reconfig = true; 2255 } 2256 } 2257 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 2258 if (value != AUDIO_CHANNEL_OUT_STEREO) { 2259 status = BAD_VALUE; 2260 } else { 2261 reconfig = true; 2262 } 2263 } 2264 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 2265 // do not accept frame count changes if tracks are open as the track buffer 2266 // size depends on frame count and correct behavior would not be garantied 2267 // if frame count is changed after track creation 2268 if (!mTracks.isEmpty()) { 2269 status = INVALID_OPERATION; 2270 } else { 2271 reconfig = true; 2272 } 2273 } 2274 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 2275 // when changing the audio output device, call addBatteryData to notify 2276 // the change 2277 if ((int)mDevice != value) { 2278 uint32_t params = 0; 2279 // check whether speaker is on 2280 if (value & AUDIO_DEVICE_OUT_SPEAKER) { 2281 params |= IMediaPlayerService::kBatteryDataSpeakerOn; 2282 } 2283 2284 int deviceWithoutSpeaker 2285 = AUDIO_DEVICE_OUT_ALL & ~AUDIO_DEVICE_OUT_SPEAKER; 2286 // check if any other device (except speaker) is on 2287 if (value & deviceWithoutSpeaker ) { 2288 params |= IMediaPlayerService::kBatteryDataOtherAudioDeviceOn; 2289 } 2290 2291 if (params != 0) { 2292 addBatteryData(params); 2293 } 2294 } 2295 2296 // forward device change to effects that have requested to be 2297 // aware of attached audio device. 2298 mDevice = (uint32_t)value; 2299 for (size_t i = 0; i < mEffectChains.size(); i++) { 2300 mEffectChains[i]->setDevice_l(mDevice); 2301 } 2302 } 2303 2304 if (status == NO_ERROR) { 2305 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2306 keyValuePair.string()); 2307 if (!mStandby && status == INVALID_OPERATION) { 2308 mOutput->stream->common.standby(&mOutput->stream->common); 2309 mStandby = true; 2310 mBytesWritten = 0; 2311 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2312 keyValuePair.string()); 2313 } 2314 if (status == NO_ERROR && reconfig) { 2315 delete mAudioMixer; 2316 readOutputParameters(); 2317 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 2318 for (size_t i = 0; i < mTracks.size() ; i++) { 2319 int name = getTrackName_l(); 2320 if (name < 0) break; 2321 mTracks[i]->mName = name; 2322 // limit track sample rate to 2 x new output sample rate 2323 if (mTracks[i]->mCblk->sampleRate > 2 * sampleRate()) { 2324 mTracks[i]->mCblk->sampleRate = 2 * sampleRate(); 2325 } 2326 } 2327 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2328 } 2329 } 2330 2331 mNewParameters.removeAt(0); 2332 2333 mParamStatus = status; 2334 mParamCond.signal(); 2335 mWaitWorkCV.wait(mLock); 2336 } 2337 return reconfig; 2338} 2339 2340status_t AudioFlinger::MixerThread::dumpInternals(int fd, const Vector<String16>& args) 2341{ 2342 const size_t SIZE = 256; 2343 char buffer[SIZE]; 2344 String8 result; 2345 2346 PlaybackThread::dumpInternals(fd, args); 2347 2348 snprintf(buffer, SIZE, "AudioMixer tracks: %08x\n", mAudioMixer->trackNames()); 2349 result.append(buffer); 2350 write(fd, result.string(), result.size()); 2351 return NO_ERROR; 2352} 2353 2354uint32_t AudioFlinger::MixerThread::activeSleepTimeUs() 2355{ 2356 return (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2357} 2358 2359uint32_t AudioFlinger::MixerThread::idleSleepTimeUs() 2360{ 2361 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2362} 2363 2364uint32_t AudioFlinger::MixerThread::suspendSleepTimeUs() 2365{ 2366 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2367} 2368 2369// ---------------------------------------------------------------------------- 2370AudioFlinger::DirectOutputThread::DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 2371 : PlaybackThread(audioFlinger, output, id, device) 2372{ 2373 mType = ThreadBase::DIRECT; 2374} 2375 2376AudioFlinger::DirectOutputThread::~DirectOutputThread() 2377{ 2378} 2379 2380 2381static inline int16_t clamp16(int32_t sample) 2382{ 2383 if ((sample>>15) ^ (sample>>31)) 2384 sample = 0x7FFF ^ (sample>>31); 2385 return sample; 2386} 2387 2388static inline 2389int32_t mul(int16_t in, int16_t v) 2390{ 2391#if defined(__arm__) && !defined(__thumb__) 2392 int32_t out; 2393 asm( "smulbb %[out], %[in], %[v] \n" 2394 : [out]"=r"(out) 2395 : [in]"%r"(in), [v]"r"(v) 2396 : ); 2397 return out; 2398#else 2399 return in * int32_t(v); 2400#endif 2401} 2402 2403void AudioFlinger::DirectOutputThread::applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp) 2404{ 2405 // Do not apply volume on compressed audio 2406 if (!audio_is_linear_pcm(mFormat)) { 2407 return; 2408 } 2409 2410 // convert to signed 16 bit before volume calculation 2411 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2412 size_t count = mFrameCount * mChannelCount; 2413 uint8_t *src = (uint8_t *)mMixBuffer + count-1; 2414 int16_t *dst = mMixBuffer + count-1; 2415 while(count--) { 2416 *dst-- = (int16_t)(*src--^0x80) << 8; 2417 } 2418 } 2419 2420 size_t frameCount = mFrameCount; 2421 int16_t *out = mMixBuffer; 2422 if (ramp) { 2423 if (mChannelCount == 1) { 2424 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2425 int32_t vlInc = d / (int32_t)frameCount; 2426 int32_t vl = ((int32_t)mLeftVolShort << 16); 2427 do { 2428 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2429 out++; 2430 vl += vlInc; 2431 } while (--frameCount); 2432 2433 } else { 2434 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2435 int32_t vlInc = d / (int32_t)frameCount; 2436 d = ((int32_t)rightVol - (int32_t)mRightVolShort) << 16; 2437 int32_t vrInc = d / (int32_t)frameCount; 2438 int32_t vl = ((int32_t)mLeftVolShort << 16); 2439 int32_t vr = ((int32_t)mRightVolShort << 16); 2440 do { 2441 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2442 out[1] = clamp16(mul(out[1], vr >> 16) >> 12); 2443 out += 2; 2444 vl += vlInc; 2445 vr += vrInc; 2446 } while (--frameCount); 2447 } 2448 } else { 2449 if (mChannelCount == 1) { 2450 do { 2451 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2452 out++; 2453 } while (--frameCount); 2454 } else { 2455 do { 2456 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2457 out[1] = clamp16(mul(out[1], rightVol) >> 12); 2458 out += 2; 2459 } while (--frameCount); 2460 } 2461 } 2462 2463 // convert back to unsigned 8 bit after volume calculation 2464 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2465 size_t count = mFrameCount * mChannelCount; 2466 int16_t *src = mMixBuffer; 2467 uint8_t *dst = (uint8_t *)mMixBuffer; 2468 while(count--) { 2469 *dst++ = (uint8_t)(((int32_t)*src++ + (1<<7)) >> 8)^0x80; 2470 } 2471 } 2472 2473 mLeftVolShort = leftVol; 2474 mRightVolShort = rightVol; 2475} 2476 2477bool AudioFlinger::DirectOutputThread::threadLoop() 2478{ 2479 uint32_t mixerStatus = MIXER_IDLE; 2480 sp<Track> trackToRemove; 2481 sp<Track> activeTrack; 2482 nsecs_t standbyTime = systemTime(); 2483 int8_t *curBuf; 2484 size_t mixBufferSize = mFrameCount*mFrameSize; 2485 uint32_t activeSleepTime = activeSleepTimeUs(); 2486 uint32_t idleSleepTime = idleSleepTimeUs(); 2487 uint32_t sleepTime = idleSleepTime; 2488 // use shorter standby delay as on normal output to release 2489 // hardware resources as soon as possible 2490 nsecs_t standbyDelay = microseconds(activeSleepTime*2); 2491 2492 acquireWakeLock(); 2493 2494 while (!exitPending()) 2495 { 2496 bool rampVolume; 2497 uint16_t leftVol; 2498 uint16_t rightVol; 2499 Vector< sp<EffectChain> > effectChains; 2500 2501 processConfigEvents(); 2502 2503 mixerStatus = MIXER_IDLE; 2504 2505 { // scope for the mLock 2506 2507 Mutex::Autolock _l(mLock); 2508 2509 if (checkForNewParameters_l()) { 2510 mixBufferSize = mFrameCount*mFrameSize; 2511 activeSleepTime = activeSleepTimeUs(); 2512 idleSleepTime = idleSleepTimeUs(); 2513 standbyDelay = microseconds(activeSleepTime*2); 2514 } 2515 2516 // put audio hardware into standby after short delay 2517 if UNLIKELY((!mActiveTracks.size() && systemTime() > standbyTime) || 2518 mSuspended) { 2519 // wait until we have something to do... 2520 if (!mStandby) { 2521 LOGV("Audio hardware entering standby, mixer %p\n", this); 2522 mOutput->stream->common.standby(&mOutput->stream->common); 2523 mStandby = true; 2524 mBytesWritten = 0; 2525 } 2526 2527 if (!mActiveTracks.size() && mConfigEvents.isEmpty()) { 2528 // we're about to wait, flush the binder command buffer 2529 IPCThreadState::self()->flushCommands(); 2530 2531 if (exitPending()) break; 2532 2533 releaseWakeLock_l(); 2534 LOGV("DirectOutputThread %p TID %d going to sleep\n", this, gettid()); 2535 mWaitWorkCV.wait(mLock); 2536 LOGV("DirectOutputThread %p TID %d waking up in active mode\n", this, gettid()); 2537 acquireWakeLock_l(); 2538 2539 if (mMasterMute == false) { 2540 char value[PROPERTY_VALUE_MAX]; 2541 property_get("ro.audio.silent", value, "0"); 2542 if (atoi(value)) { 2543 LOGD("Silence is golden"); 2544 setMasterMute(true); 2545 } 2546 } 2547 2548 standbyTime = systemTime() + standbyDelay; 2549 sleepTime = idleSleepTime; 2550 continue; 2551 } 2552 } 2553 2554 effectChains = mEffectChains; 2555 2556 // find out which tracks need to be processed 2557 if (mActiveTracks.size() != 0) { 2558 sp<Track> t = mActiveTracks[0].promote(); 2559 if (t == 0) continue; 2560 2561 Track* const track = t.get(); 2562 audio_track_cblk_t* cblk = track->cblk(); 2563 2564 // The first time a track is added we wait 2565 // for all its buffers to be filled before processing it 2566 if (cblk->framesReady() && track->isReady() && 2567 !track->isPaused() && !track->isTerminated()) 2568 { 2569 //LOGV("track %d u=%08x, s=%08x [OK]", track->name(), cblk->user, cblk->server); 2570 2571 if (track->mFillingUpStatus == Track::FS_FILLED) { 2572 track->mFillingUpStatus = Track::FS_ACTIVE; 2573 mLeftVolFloat = mRightVolFloat = 0; 2574 mLeftVolShort = mRightVolShort = 0; 2575 if (track->mState == TrackBase::RESUMING) { 2576 track->mState = TrackBase::ACTIVE; 2577 rampVolume = true; 2578 } 2579 } else if (cblk->server != 0) { 2580 // If the track is stopped before the first frame was mixed, 2581 // do not apply ramp 2582 rampVolume = true; 2583 } 2584 // compute volume for this track 2585 float left, right; 2586 if (track->isMuted() || mMasterMute || track->isPausing() || 2587 mStreamTypes[track->type()].mute) { 2588 left = right = 0; 2589 if (track->isPausing()) { 2590 track->setPaused(); 2591 } 2592 } else { 2593 float typeVolume = mStreamTypes[track->type()].volume; 2594 float v = mMasterVolume * typeVolume; 2595 float v_clamped = v * cblk->volume[0]; 2596 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2597 left = v_clamped/MAX_GAIN; 2598 v_clamped = v * cblk->volume[1]; 2599 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2600 right = v_clamped/MAX_GAIN; 2601 } 2602 2603 if (left != mLeftVolFloat || right != mRightVolFloat) { 2604 mLeftVolFloat = left; 2605 mRightVolFloat = right; 2606 2607 // If audio HAL implements volume control, 2608 // force software volume to nominal value 2609 if (mOutput->stream->set_volume(mOutput->stream, left, right) == NO_ERROR) { 2610 left = 1.0f; 2611 right = 1.0f; 2612 } 2613 2614 // Convert volumes from float to 8.24 2615 uint32_t vl = (uint32_t)(left * (1 << 24)); 2616 uint32_t vr = (uint32_t)(right * (1 << 24)); 2617 2618 // Delegate volume control to effect in track effect chain if needed 2619 // only one effect chain can be present on DirectOutputThread, so if 2620 // there is one, the track is connected to it 2621 if (!effectChains.isEmpty()) { 2622 // Do not ramp volume if volume is controlled by effect 2623 if(effectChains[0]->setVolume_l(&vl, &vr)) { 2624 rampVolume = false; 2625 } 2626 } 2627 2628 // Convert volumes from 8.24 to 4.12 format 2629 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 2630 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2631 leftVol = (uint16_t)v_clamped; 2632 v_clamped = (vr + (1 << 11)) >> 12; 2633 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2634 rightVol = (uint16_t)v_clamped; 2635 } else { 2636 leftVol = mLeftVolShort; 2637 rightVol = mRightVolShort; 2638 rampVolume = false; 2639 } 2640 2641 // reset retry count 2642 track->mRetryCount = kMaxTrackRetriesDirect; 2643 activeTrack = t; 2644 mixerStatus = MIXER_TRACKS_READY; 2645 } else { 2646 //LOGV("track %d u=%08x, s=%08x [NOT READY]", track->name(), cblk->user, cblk->server); 2647 if (track->isStopped()) { 2648 track->reset(); 2649 } 2650 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 2651 // We have consumed all the buffers of this track. 2652 // Remove it from the list of active tracks. 2653 trackToRemove = track; 2654 } else { 2655 // No buffers for this track. Give it a few chances to 2656 // fill a buffer, then remove it from active list. 2657 if (--(track->mRetryCount) <= 0) { 2658 LOGV("BUFFER TIMEOUT: remove(%d) from active list", track->name()); 2659 trackToRemove = track; 2660 } else { 2661 mixerStatus = MIXER_TRACKS_ENABLED; 2662 } 2663 } 2664 } 2665 } 2666 2667 // remove all the tracks that need to be... 2668 if (UNLIKELY(trackToRemove != 0)) { 2669 mActiveTracks.remove(trackToRemove); 2670 if (!effectChains.isEmpty()) { 2671 LOGV("stopping track on chain %p for session Id: %d", effectChains[0].get(), 2672 trackToRemove->sessionId()); 2673 effectChains[0]->decActiveTrackCnt(); 2674 } 2675 if (trackToRemove->isTerminated()) { 2676 removeTrack_l(trackToRemove); 2677 } 2678 } 2679 2680 lockEffectChains_l(effectChains); 2681 } 2682 2683 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2684 AudioBufferProvider::Buffer buffer; 2685 size_t frameCount = mFrameCount; 2686 curBuf = (int8_t *)mMixBuffer; 2687 // output audio to hardware 2688 while (frameCount) { 2689 buffer.frameCount = frameCount; 2690 activeTrack->getNextBuffer(&buffer); 2691 if (UNLIKELY(buffer.raw == 0)) { 2692 memset(curBuf, 0, frameCount * mFrameSize); 2693 break; 2694 } 2695 memcpy(curBuf, buffer.raw, buffer.frameCount * mFrameSize); 2696 frameCount -= buffer.frameCount; 2697 curBuf += buffer.frameCount * mFrameSize; 2698 activeTrack->releaseBuffer(&buffer); 2699 } 2700 sleepTime = 0; 2701 standbyTime = systemTime() + standbyDelay; 2702 } else { 2703 if (sleepTime == 0) { 2704 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2705 sleepTime = activeSleepTime; 2706 } else { 2707 sleepTime = idleSleepTime; 2708 } 2709 } else if (mBytesWritten != 0 && audio_is_linear_pcm(mFormat)) { 2710 memset (mMixBuffer, 0, mFrameCount * mFrameSize); 2711 sleepTime = 0; 2712 } 2713 } 2714 2715 if (mSuspended) { 2716 sleepTime = suspendSleepTimeUs(); 2717 } 2718 // sleepTime == 0 means we must write to audio hardware 2719 if (sleepTime == 0) { 2720 if (mixerStatus == MIXER_TRACKS_READY) { 2721 applyVolume(leftVol, rightVol, rampVolume); 2722 } 2723 for (size_t i = 0; i < effectChains.size(); i ++) { 2724 effectChains[i]->process_l(); 2725 } 2726 unlockEffectChains(effectChains); 2727 2728 mLastWriteTime = systemTime(); 2729 mInWrite = true; 2730 mBytesWritten += mixBufferSize; 2731 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 2732 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 2733 mNumWrites++; 2734 mInWrite = false; 2735 mStandby = false; 2736 } else { 2737 unlockEffectChains(effectChains); 2738 usleep(sleepTime); 2739 } 2740 2741 // finally let go of removed track, without the lock held 2742 // since we can't guarantee the destructors won't acquire that 2743 // same lock. 2744 trackToRemove.clear(); 2745 activeTrack.clear(); 2746 2747 // Effect chains will be actually deleted here if they were removed from 2748 // mEffectChains list during mixing or effects processing 2749 effectChains.clear(); 2750 } 2751 2752 if (!mStandby) { 2753 mOutput->stream->common.standby(&mOutput->stream->common); 2754 } 2755 2756 releaseWakeLock(); 2757 2758 LOGV("DirectOutputThread %p exiting", this); 2759 return false; 2760} 2761 2762// getTrackName_l() must be called with ThreadBase::mLock held 2763int AudioFlinger::DirectOutputThread::getTrackName_l() 2764{ 2765 return 0; 2766} 2767 2768// deleteTrackName_l() must be called with ThreadBase::mLock held 2769void AudioFlinger::DirectOutputThread::deleteTrackName_l(int name) 2770{ 2771} 2772 2773// checkForNewParameters_l() must be called with ThreadBase::mLock held 2774bool AudioFlinger::DirectOutputThread::checkForNewParameters_l() 2775{ 2776 bool reconfig = false; 2777 2778 while (!mNewParameters.isEmpty()) { 2779 status_t status = NO_ERROR; 2780 String8 keyValuePair = mNewParameters[0]; 2781 AudioParameter param = AudioParameter(keyValuePair); 2782 int value; 2783 2784 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 2785 // do not accept frame count changes if tracks are open as the track buffer 2786 // size depends on frame count and correct behavior would not be garantied 2787 // if frame count is changed after track creation 2788 if (!mTracks.isEmpty()) { 2789 status = INVALID_OPERATION; 2790 } else { 2791 reconfig = true; 2792 } 2793 } 2794 if (status == NO_ERROR) { 2795 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2796 keyValuePair.string()); 2797 if (!mStandby && status == INVALID_OPERATION) { 2798 mOutput->stream->common.standby(&mOutput->stream->common); 2799 mStandby = true; 2800 mBytesWritten = 0; 2801 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2802 keyValuePair.string()); 2803 } 2804 if (status == NO_ERROR && reconfig) { 2805 readOutputParameters(); 2806 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2807 } 2808 } 2809 2810 mNewParameters.removeAt(0); 2811 2812 mParamStatus = status; 2813 mParamCond.signal(); 2814 mWaitWorkCV.wait(mLock); 2815 } 2816 return reconfig; 2817} 2818 2819uint32_t AudioFlinger::DirectOutputThread::activeSleepTimeUs() 2820{ 2821 uint32_t time; 2822 if (audio_is_linear_pcm(mFormat)) { 2823 time = (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2824 } else { 2825 time = 10000; 2826 } 2827 return time; 2828} 2829 2830uint32_t AudioFlinger::DirectOutputThread::idleSleepTimeUs() 2831{ 2832 uint32_t time; 2833 if (audio_is_linear_pcm(mFormat)) { 2834 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2835 } else { 2836 time = 10000; 2837 } 2838 return time; 2839} 2840 2841uint32_t AudioFlinger::DirectOutputThread::suspendSleepTimeUs() 2842{ 2843 uint32_t time; 2844 if (audio_is_linear_pcm(mFormat)) { 2845 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2846 } else { 2847 time = 10000; 2848 } 2849 return time; 2850} 2851 2852 2853// ---------------------------------------------------------------------------- 2854 2855AudioFlinger::DuplicatingThread::DuplicatingThread(const sp<AudioFlinger>& audioFlinger, AudioFlinger::MixerThread* mainThread, int id) 2856 : MixerThread(audioFlinger, mainThread->getOutput(), id, mainThread->device()), mWaitTimeMs(UINT_MAX) 2857{ 2858 mType = ThreadBase::DUPLICATING; 2859 addOutputTrack(mainThread); 2860} 2861 2862AudioFlinger::DuplicatingThread::~DuplicatingThread() 2863{ 2864 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2865 mOutputTracks[i]->destroy(); 2866 } 2867 mOutputTracks.clear(); 2868} 2869 2870bool AudioFlinger::DuplicatingThread::threadLoop() 2871{ 2872 Vector< sp<Track> > tracksToRemove; 2873 uint32_t mixerStatus = MIXER_IDLE; 2874 nsecs_t standbyTime = systemTime(); 2875 size_t mixBufferSize = mFrameCount*mFrameSize; 2876 SortedVector< sp<OutputTrack> > outputTracks; 2877 uint32_t writeFrames = 0; 2878 uint32_t activeSleepTime = activeSleepTimeUs(); 2879 uint32_t idleSleepTime = idleSleepTimeUs(); 2880 uint32_t sleepTime = idleSleepTime; 2881 Vector< sp<EffectChain> > effectChains; 2882 2883 acquireWakeLock(); 2884 2885 while (!exitPending()) 2886 { 2887 processConfigEvents(); 2888 2889 mixerStatus = MIXER_IDLE; 2890 { // scope for the mLock 2891 2892 Mutex::Autolock _l(mLock); 2893 2894 if (checkForNewParameters_l()) { 2895 mixBufferSize = mFrameCount*mFrameSize; 2896 updateWaitTime(); 2897 activeSleepTime = activeSleepTimeUs(); 2898 idleSleepTime = idleSleepTimeUs(); 2899 } 2900 2901 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 2902 2903 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2904 outputTracks.add(mOutputTracks[i]); 2905 } 2906 2907 // put audio hardware into standby after short delay 2908 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 2909 mSuspended) { 2910 if (!mStandby) { 2911 for (size_t i = 0; i < outputTracks.size(); i++) { 2912 outputTracks[i]->stop(); 2913 } 2914 mStandby = true; 2915 mBytesWritten = 0; 2916 } 2917 2918 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 2919 // we're about to wait, flush the binder command buffer 2920 IPCThreadState::self()->flushCommands(); 2921 outputTracks.clear(); 2922 2923 if (exitPending()) break; 2924 2925 releaseWakeLock_l(); 2926 LOGV("DuplicatingThread %p TID %d going to sleep\n", this, gettid()); 2927 mWaitWorkCV.wait(mLock); 2928 LOGV("DuplicatingThread %p TID %d waking up\n", this, gettid()); 2929 acquireWakeLock_l(); 2930 2931 if (mMasterMute == false) { 2932 char value[PROPERTY_VALUE_MAX]; 2933 property_get("ro.audio.silent", value, "0"); 2934 if (atoi(value)) { 2935 LOGD("Silence is golden"); 2936 setMasterMute(true); 2937 } 2938 } 2939 2940 standbyTime = systemTime() + kStandbyTimeInNsecs; 2941 sleepTime = idleSleepTime; 2942 continue; 2943 } 2944 } 2945 2946 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 2947 2948 // prevent any changes in effect chain list and in each effect chain 2949 // during mixing and effect process as the audio buffers could be deleted 2950 // or modified if an effect is created or deleted 2951 lockEffectChains_l(effectChains); 2952 } 2953 2954 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2955 // mix buffers... 2956 if (outputsReady(outputTracks)) { 2957 mAudioMixer->process(); 2958 } else { 2959 memset(mMixBuffer, 0, mixBufferSize); 2960 } 2961 sleepTime = 0; 2962 writeFrames = mFrameCount; 2963 } else { 2964 if (sleepTime == 0) { 2965 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2966 sleepTime = activeSleepTime; 2967 } else { 2968 sleepTime = idleSleepTime; 2969 } 2970 } else if (mBytesWritten != 0) { 2971 // flush remaining overflow buffers in output tracks 2972 for (size_t i = 0; i < outputTracks.size(); i++) { 2973 if (outputTracks[i]->isActive()) { 2974 sleepTime = 0; 2975 writeFrames = 0; 2976 memset(mMixBuffer, 0, mixBufferSize); 2977 break; 2978 } 2979 } 2980 } 2981 } 2982 2983 if (mSuspended) { 2984 sleepTime = suspendSleepTimeUs(); 2985 } 2986 // sleepTime == 0 means we must write to audio hardware 2987 if (sleepTime == 0) { 2988 for (size_t i = 0; i < effectChains.size(); i ++) { 2989 effectChains[i]->process_l(); 2990 } 2991 // enable changes in effect chain 2992 unlockEffectChains(effectChains); 2993 2994 standbyTime = systemTime() + kStandbyTimeInNsecs; 2995 for (size_t i = 0; i < outputTracks.size(); i++) { 2996 outputTracks[i]->write(mMixBuffer, writeFrames); 2997 } 2998 mStandby = false; 2999 mBytesWritten += mixBufferSize; 3000 } else { 3001 // enable changes in effect chain 3002 unlockEffectChains(effectChains); 3003 usleep(sleepTime); 3004 } 3005 3006 // finally let go of all our tracks, without the lock held 3007 // since we can't guarantee the destructors won't acquire that 3008 // same lock. 3009 tracksToRemove.clear(); 3010 outputTracks.clear(); 3011 3012 // Effect chains will be actually deleted here if they were removed from 3013 // mEffectChains list during mixing or effects processing 3014 effectChains.clear(); 3015 } 3016 3017 releaseWakeLock(); 3018 3019 return false; 3020} 3021 3022void AudioFlinger::DuplicatingThread::addOutputTrack(MixerThread *thread) 3023{ 3024 int frameCount = (3 * mFrameCount * mSampleRate) / thread->sampleRate(); 3025 OutputTrack *outputTrack = new OutputTrack((ThreadBase *)thread, 3026 this, 3027 mSampleRate, 3028 mFormat, 3029 mChannelMask, 3030 frameCount); 3031 if (outputTrack->cblk() != NULL) { 3032 thread->setStreamVolume(AUDIO_STREAM_CNT, 1.0f); 3033 mOutputTracks.add(outputTrack); 3034 LOGV("addOutputTrack() track %p, on thread %p", outputTrack, thread); 3035 updateWaitTime(); 3036 } 3037} 3038 3039void AudioFlinger::DuplicatingThread::removeOutputTrack(MixerThread *thread) 3040{ 3041 Mutex::Autolock _l(mLock); 3042 for (size_t i = 0; i < mOutputTracks.size(); i++) { 3043 if (mOutputTracks[i]->thread() == (ThreadBase *)thread) { 3044 mOutputTracks[i]->destroy(); 3045 mOutputTracks.removeAt(i); 3046 updateWaitTime(); 3047 return; 3048 } 3049 } 3050 LOGV("removeOutputTrack(): unkonwn thread: %p", thread); 3051} 3052 3053void AudioFlinger::DuplicatingThread::updateWaitTime() 3054{ 3055 mWaitTimeMs = UINT_MAX; 3056 for (size_t i = 0; i < mOutputTracks.size(); i++) { 3057 sp<ThreadBase> strong = mOutputTracks[i]->thread().promote(); 3058 if (strong != NULL) { 3059 uint32_t waitTimeMs = (strong->frameCount() * 2 * 1000) / strong->sampleRate(); 3060 if (waitTimeMs < mWaitTimeMs) { 3061 mWaitTimeMs = waitTimeMs; 3062 } 3063 } 3064 } 3065} 3066 3067 3068bool AudioFlinger::DuplicatingThread::outputsReady(SortedVector< sp<OutputTrack> > &outputTracks) 3069{ 3070 for (size_t i = 0; i < outputTracks.size(); i++) { 3071 sp <ThreadBase> thread = outputTracks[i]->thread().promote(); 3072 if (thread == 0) { 3073 LOGW("DuplicatingThread::outputsReady() could not promote thread on output track %p", outputTracks[i].get()); 3074 return false; 3075 } 3076 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3077 if (playbackThread->standby() && !playbackThread->isSuspended()) { 3078 LOGV("DuplicatingThread output track %p on thread %p Not Ready", outputTracks[i].get(), thread.get()); 3079 return false; 3080 } 3081 } 3082 return true; 3083} 3084 3085uint32_t AudioFlinger::DuplicatingThread::activeSleepTimeUs() 3086{ 3087 return (mWaitTimeMs * 1000) / 2; 3088} 3089 3090// ---------------------------------------------------------------------------- 3091 3092// TrackBase constructor must be called with AudioFlinger::mLock held 3093AudioFlinger::ThreadBase::TrackBase::TrackBase( 3094 const wp<ThreadBase>& thread, 3095 const sp<Client>& client, 3096 uint32_t sampleRate, 3097 uint32_t format, 3098 uint32_t channelMask, 3099 int frameCount, 3100 uint32_t flags, 3101 const sp<IMemory>& sharedBuffer, 3102 int sessionId) 3103 : RefBase(), 3104 mThread(thread), 3105 mClient(client), 3106 mCblk(0), 3107 mFrameCount(0), 3108 mState(IDLE), 3109 mClientTid(-1), 3110 mFormat(format), 3111 mFlags(flags & ~SYSTEM_FLAGS_MASK), 3112 mSessionId(sessionId) 3113{ 3114 LOGV_IF(sharedBuffer != 0, "sharedBuffer: %p, size: %d", sharedBuffer->pointer(), sharedBuffer->size()); 3115 3116 // LOGD("Creating track with %d buffers @ %d bytes", bufferCount, bufferSize); 3117 size_t size = sizeof(audio_track_cblk_t); 3118 uint8_t channelCount = popcount(channelMask); 3119 size_t bufferSize = frameCount*channelCount*sizeof(int16_t); 3120 if (sharedBuffer == 0) { 3121 size += bufferSize; 3122 } 3123 3124 if (client != NULL) { 3125 mCblkMemory = client->heap()->allocate(size); 3126 if (mCblkMemory != 0) { 3127 mCblk = static_cast<audio_track_cblk_t *>(mCblkMemory->pointer()); 3128 if (mCblk) { // construct the shared structure in-place. 3129 new(mCblk) audio_track_cblk_t(); 3130 // clear all buffers 3131 mCblk->frameCount = frameCount; 3132 mCblk->sampleRate = sampleRate; 3133 mChannelCount = channelCount; 3134 mChannelMask = channelMask; 3135 if (sharedBuffer == 0) { 3136 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 3137 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 3138 // Force underrun condition to avoid false underrun callback until first data is 3139 // written to buffer (other flags are cleared) 3140 mCblk->flags = CBLK_UNDERRUN_ON; 3141 } else { 3142 mBuffer = sharedBuffer->pointer(); 3143 } 3144 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 3145 } 3146 } else { 3147 LOGE("not enough memory for AudioTrack size=%u", size); 3148 client->heap()->dump("AudioTrack"); 3149 return; 3150 } 3151 } else { 3152 mCblk = (audio_track_cblk_t *)(new uint8_t[size]); 3153 if (mCblk) { // construct the shared structure in-place. 3154 new(mCblk) audio_track_cblk_t(); 3155 // clear all buffers 3156 mCblk->frameCount = frameCount; 3157 mCblk->sampleRate = sampleRate; 3158 mChannelCount = channelCount; 3159 mChannelMask = channelMask; 3160 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 3161 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 3162 // Force underrun condition to avoid false underrun callback until first data is 3163 // written to buffer (other flags are cleared) 3164 mCblk->flags = CBLK_UNDERRUN_ON; 3165 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 3166 } 3167 } 3168} 3169 3170AudioFlinger::ThreadBase::TrackBase::~TrackBase() 3171{ 3172 if (mCblk) { 3173 mCblk->~audio_track_cblk_t(); // destroy our shared-structure. 3174 if (mClient == NULL) { 3175 delete mCblk; 3176 } 3177 } 3178 mCblkMemory.clear(); // and free the shared memory 3179 if (mClient != NULL) { 3180 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 3181 mClient.clear(); 3182 } 3183} 3184 3185void AudioFlinger::ThreadBase::TrackBase::releaseBuffer(AudioBufferProvider::Buffer* buffer) 3186{ 3187 buffer->raw = 0; 3188 mFrameCount = buffer->frameCount; 3189 step(); 3190 buffer->frameCount = 0; 3191} 3192 3193bool AudioFlinger::ThreadBase::TrackBase::step() { 3194 bool result; 3195 audio_track_cblk_t* cblk = this->cblk(); 3196 3197 result = cblk->stepServer(mFrameCount); 3198 if (!result) { 3199 LOGV("stepServer failed acquiring cblk mutex"); 3200 mFlags |= STEPSERVER_FAILED; 3201 } 3202 return result; 3203} 3204 3205void AudioFlinger::ThreadBase::TrackBase::reset() { 3206 audio_track_cblk_t* cblk = this->cblk(); 3207 3208 cblk->user = 0; 3209 cblk->server = 0; 3210 cblk->userBase = 0; 3211 cblk->serverBase = 0; 3212 mFlags &= (uint32_t)(~SYSTEM_FLAGS_MASK); 3213 LOGV("TrackBase::reset"); 3214} 3215 3216sp<IMemory> AudioFlinger::ThreadBase::TrackBase::getCblk() const 3217{ 3218 return mCblkMemory; 3219} 3220 3221int AudioFlinger::ThreadBase::TrackBase::sampleRate() const { 3222 return (int)mCblk->sampleRate; 3223} 3224 3225int AudioFlinger::ThreadBase::TrackBase::channelCount() const { 3226 return (const int)mChannelCount; 3227} 3228 3229uint32_t AudioFlinger::ThreadBase::TrackBase::channelMask() const { 3230 return mChannelMask; 3231} 3232 3233void* AudioFlinger::ThreadBase::TrackBase::getBuffer(uint32_t offset, uint32_t frames) const { 3234 audio_track_cblk_t* cblk = this->cblk(); 3235 int8_t *bufferStart = (int8_t *)mBuffer + (offset-cblk->serverBase)*cblk->frameSize; 3236 int8_t *bufferEnd = bufferStart + frames * cblk->frameSize; 3237 3238 // Check validity of returned pointer in case the track control block would have been corrupted. 3239 if (bufferStart < mBuffer || bufferStart > bufferEnd || bufferEnd > mBufferEnd || 3240 ((unsigned long)bufferStart & (unsigned long)(cblk->frameSize - 1))) { 3241 LOGE("TrackBase::getBuffer buffer out of range:\n start: %p, end %p , mBuffer %p mBufferEnd %p\n \ 3242 server %d, serverBase %d, user %d, userBase %d", 3243 bufferStart, bufferEnd, mBuffer, mBufferEnd, 3244 cblk->server, cblk->serverBase, cblk->user, cblk->userBase); 3245 return 0; 3246 } 3247 3248 return bufferStart; 3249} 3250 3251// ---------------------------------------------------------------------------- 3252 3253// Track constructor must be called with AudioFlinger::mLock and ThreadBase::mLock held 3254AudioFlinger::PlaybackThread::Track::Track( 3255 const wp<ThreadBase>& thread, 3256 const sp<Client>& client, 3257 int streamType, 3258 uint32_t sampleRate, 3259 uint32_t format, 3260 uint32_t channelMask, 3261 int frameCount, 3262 const sp<IMemory>& sharedBuffer, 3263 int sessionId) 3264 : TrackBase(thread, client, sampleRate, format, channelMask, frameCount, 0, sharedBuffer, sessionId), 3265 mMute(false), mSharedBuffer(sharedBuffer), mName(-1), mMainBuffer(NULL), mAuxBuffer(NULL), 3266 mAuxEffectId(0), mHasVolumeController(false) 3267{ 3268 if (mCblk != NULL) { 3269 sp<ThreadBase> baseThread = thread.promote(); 3270 if (baseThread != 0) { 3271 PlaybackThread *playbackThread = (PlaybackThread *)baseThread.get(); 3272 mName = playbackThread->getTrackName_l(); 3273 mMainBuffer = playbackThread->mixBuffer(); 3274 } 3275 LOGV("Track constructor name %d, calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3276 if (mName < 0) { 3277 LOGE("no more track names available"); 3278 } 3279 mVolume[0] = 1.0f; 3280 mVolume[1] = 1.0f; 3281 mStreamType = streamType; 3282 // NOTE: audio_track_cblk_t::frameSize for 8 bit PCM data is based on a sample size of 3283 // 16 bit because data is converted to 16 bit before being stored in buffer by AudioTrack 3284 mCblk->frameSize = audio_is_linear_pcm(format) ? mChannelCount * sizeof(int16_t) : sizeof(uint8_t); 3285 } 3286} 3287 3288AudioFlinger::PlaybackThread::Track::~Track() 3289{ 3290 LOGV("PlaybackThread::Track destructor"); 3291 sp<ThreadBase> thread = mThread.promote(); 3292 if (thread != 0) { 3293 Mutex::Autolock _l(thread->mLock); 3294 mState = TERMINATED; 3295 } 3296} 3297 3298void AudioFlinger::PlaybackThread::Track::destroy() 3299{ 3300 // NOTE: destroyTrack_l() can remove a strong reference to this Track 3301 // by removing it from mTracks vector, so there is a risk that this Tracks's 3302 // desctructor is called. As the destructor needs to lock mLock, 3303 // we must acquire a strong reference on this Track before locking mLock 3304 // here so that the destructor is called only when exiting this function. 3305 // On the other hand, as long as Track::destroy() is only called by 3306 // TrackHandle destructor, the TrackHandle still holds a strong ref on 3307 // this Track with its member mTrack. 3308 sp<Track> keep(this); 3309 { // scope for mLock 3310 sp<ThreadBase> thread = mThread.promote(); 3311 if (thread != 0) { 3312 if (!isOutputTrack()) { 3313 if (mState == ACTIVE || mState == RESUMING) { 3314 AudioSystem::stopOutput(thread->id(), 3315 (audio_stream_type_t)mStreamType, 3316 mSessionId); 3317 3318 // to track the speaker usage 3319 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3320 } 3321 AudioSystem::releaseOutput(thread->id()); 3322 } 3323 Mutex::Autolock _l(thread->mLock); 3324 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3325 playbackThread->destroyTrack_l(this); 3326 } 3327 } 3328} 3329 3330void AudioFlinger::PlaybackThread::Track::dump(char* buffer, size_t size) 3331{ 3332 snprintf(buffer, size, " %05d %05d %03u %03u 0x%08x %05u %04u %1d %1d %1d %05u %05u %05u 0x%08x 0x%08x 0x%08x 0x%08x\n", 3333 mName - AudioMixer::TRACK0, 3334 (mClient == NULL) ? getpid() : mClient->pid(), 3335 mStreamType, 3336 mFormat, 3337 mChannelMask, 3338 mSessionId, 3339 mFrameCount, 3340 mState, 3341 mMute, 3342 mFillingUpStatus, 3343 mCblk->sampleRate, 3344 mCblk->volume[0], 3345 mCblk->volume[1], 3346 mCblk->server, 3347 mCblk->user, 3348 (int)mMainBuffer, 3349 (int)mAuxBuffer); 3350} 3351 3352status_t AudioFlinger::PlaybackThread::Track::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3353{ 3354 audio_track_cblk_t* cblk = this->cblk(); 3355 uint32_t framesReady; 3356 uint32_t framesReq = buffer->frameCount; 3357 3358 // Check if last stepServer failed, try to step now 3359 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3360 if (!step()) goto getNextBuffer_exit; 3361 LOGV("stepServer recovered"); 3362 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3363 } 3364 3365 framesReady = cblk->framesReady(); 3366 3367 if (LIKELY(framesReady)) { 3368 uint32_t s = cblk->server; 3369 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3370 3371 bufferEnd = (cblk->loopEnd < bufferEnd) ? cblk->loopEnd : bufferEnd; 3372 if (framesReq > framesReady) { 3373 framesReq = framesReady; 3374 } 3375 if (s + framesReq > bufferEnd) { 3376 framesReq = bufferEnd - s; 3377 } 3378 3379 buffer->raw = getBuffer(s, framesReq); 3380 if (buffer->raw == 0) goto getNextBuffer_exit; 3381 3382 buffer->frameCount = framesReq; 3383 return NO_ERROR; 3384 } 3385 3386getNextBuffer_exit: 3387 buffer->raw = 0; 3388 buffer->frameCount = 0; 3389 LOGV("getNextBuffer() no more data for track %d on thread %p", mName, mThread.unsafe_get()); 3390 return NOT_ENOUGH_DATA; 3391} 3392 3393bool AudioFlinger::PlaybackThread::Track::isReady() const { 3394 if (mFillingUpStatus != FS_FILLING || isStopped() || isPausing()) return true; 3395 3396 if (mCblk->framesReady() >= mCblk->frameCount || 3397 (mCblk->flags & CBLK_FORCEREADY_MSK)) { 3398 mFillingUpStatus = FS_FILLED; 3399 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3400 return true; 3401 } 3402 return false; 3403} 3404 3405status_t AudioFlinger::PlaybackThread::Track::start() 3406{ 3407 status_t status = NO_ERROR; 3408 LOGV("start(%d), calling thread %d session %d", 3409 mName, IPCThreadState::self()->getCallingPid(), mSessionId); 3410 sp<ThreadBase> thread = mThread.promote(); 3411 if (thread != 0) { 3412 Mutex::Autolock _l(thread->mLock); 3413 int state = mState; 3414 // here the track could be either new, or restarted 3415 // in both cases "unstop" the track 3416 if (mState == PAUSED) { 3417 mState = TrackBase::RESUMING; 3418 LOGV("PAUSED => RESUMING (%d) on thread %p", mName, this); 3419 } else { 3420 mState = TrackBase::ACTIVE; 3421 LOGV("? => ACTIVE (%d) on thread %p", mName, this); 3422 } 3423 3424 if (!isOutputTrack() && state != ACTIVE && state != RESUMING) { 3425 thread->mLock.unlock(); 3426 status = AudioSystem::startOutput(thread->id(), 3427 (audio_stream_type_t)mStreamType, 3428 mSessionId); 3429 thread->mLock.lock(); 3430 3431 // to track the speaker usage 3432 if (status == NO_ERROR) { 3433 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStart); 3434 } 3435 } 3436 if (status == NO_ERROR) { 3437 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3438 playbackThread->addTrack_l(this); 3439 } else { 3440 mState = state; 3441 } 3442 } else { 3443 status = BAD_VALUE; 3444 } 3445 return status; 3446} 3447 3448void AudioFlinger::PlaybackThread::Track::stop() 3449{ 3450 LOGV("stop(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3451 sp<ThreadBase> thread = mThread.promote(); 3452 if (thread != 0) { 3453 Mutex::Autolock _l(thread->mLock); 3454 int state = mState; 3455 if (mState > STOPPED) { 3456 mState = STOPPED; 3457 // If the track is not active (PAUSED and buffers full), flush buffers 3458 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3459 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3460 reset(); 3461 } 3462 LOGV("(> STOPPED) => STOPPED (%d) on thread %p", mName, playbackThread); 3463 } 3464 if (!isOutputTrack() && (state == ACTIVE || state == RESUMING)) { 3465 thread->mLock.unlock(); 3466 AudioSystem::stopOutput(thread->id(), 3467 (audio_stream_type_t)mStreamType, 3468 mSessionId); 3469 thread->mLock.lock(); 3470 3471 // to track the speaker usage 3472 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3473 } 3474 } 3475} 3476 3477void AudioFlinger::PlaybackThread::Track::pause() 3478{ 3479 LOGV("pause(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3480 sp<ThreadBase> thread = mThread.promote(); 3481 if (thread != 0) { 3482 Mutex::Autolock _l(thread->mLock); 3483 if (mState == ACTIVE || mState == RESUMING) { 3484 mState = PAUSING; 3485 LOGV("ACTIVE/RESUMING => PAUSING (%d) on thread %p", mName, thread.get()); 3486 if (!isOutputTrack()) { 3487 thread->mLock.unlock(); 3488 AudioSystem::stopOutput(thread->id(), 3489 (audio_stream_type_t)mStreamType, 3490 mSessionId); 3491 thread->mLock.lock(); 3492 3493 // to track the speaker usage 3494 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3495 } 3496 } 3497 } 3498} 3499 3500void AudioFlinger::PlaybackThread::Track::flush() 3501{ 3502 LOGV("flush(%d)", mName); 3503 sp<ThreadBase> thread = mThread.promote(); 3504 if (thread != 0) { 3505 Mutex::Autolock _l(thread->mLock); 3506 if (mState != STOPPED && mState != PAUSED && mState != PAUSING) { 3507 return; 3508 } 3509 // No point remaining in PAUSED state after a flush => go to 3510 // STOPPED state 3511 mState = STOPPED; 3512 3513 // do not reset the track if it is still in the process of being stopped or paused. 3514 // this will be done by prepareTracks_l() when the track is stopped. 3515 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3516 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3517 reset(); 3518 } 3519 } 3520} 3521 3522void AudioFlinger::PlaybackThread::Track::reset() 3523{ 3524 // Do not reset twice to avoid discarding data written just after a flush and before 3525 // the audioflinger thread detects the track is stopped. 3526 if (!mResetDone) { 3527 TrackBase::reset(); 3528 // Force underrun condition to avoid false underrun callback until first data is 3529 // written to buffer 3530 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3531 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3532 mFillingUpStatus = FS_FILLING; 3533 mResetDone = true; 3534 } 3535} 3536 3537void AudioFlinger::PlaybackThread::Track::mute(bool muted) 3538{ 3539 mMute = muted; 3540} 3541 3542void AudioFlinger::PlaybackThread::Track::setVolume(float left, float right) 3543{ 3544 mVolume[0] = left; 3545 mVolume[1] = right; 3546} 3547 3548status_t AudioFlinger::PlaybackThread::Track::attachAuxEffect(int EffectId) 3549{ 3550 status_t status = DEAD_OBJECT; 3551 sp<ThreadBase> thread = mThread.promote(); 3552 if (thread != 0) { 3553 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3554 status = playbackThread->attachAuxEffect(this, EffectId); 3555 } 3556 return status; 3557} 3558 3559void AudioFlinger::PlaybackThread::Track::setAuxBuffer(int EffectId, int32_t *buffer) 3560{ 3561 mAuxEffectId = EffectId; 3562 mAuxBuffer = buffer; 3563} 3564 3565// ---------------------------------------------------------------------------- 3566 3567// RecordTrack constructor must be called with AudioFlinger::mLock held 3568AudioFlinger::RecordThread::RecordTrack::RecordTrack( 3569 const wp<ThreadBase>& thread, 3570 const sp<Client>& client, 3571 uint32_t sampleRate, 3572 uint32_t format, 3573 uint32_t channelMask, 3574 int frameCount, 3575 uint32_t flags, 3576 int sessionId) 3577 : TrackBase(thread, client, sampleRate, format, 3578 channelMask, frameCount, flags, 0, sessionId), 3579 mOverflow(false) 3580{ 3581 if (mCblk != NULL) { 3582 LOGV("RecordTrack constructor, size %d", (int)mBufferEnd - (int)mBuffer); 3583 if (format == AUDIO_FORMAT_PCM_16_BIT) { 3584 mCblk->frameSize = mChannelCount * sizeof(int16_t); 3585 } else if (format == AUDIO_FORMAT_PCM_8_BIT) { 3586 mCblk->frameSize = mChannelCount * sizeof(int8_t); 3587 } else { 3588 mCblk->frameSize = sizeof(int8_t); 3589 } 3590 } 3591} 3592 3593AudioFlinger::RecordThread::RecordTrack::~RecordTrack() 3594{ 3595 sp<ThreadBase> thread = mThread.promote(); 3596 if (thread != 0) { 3597 AudioSystem::releaseInput(thread->id()); 3598 } 3599} 3600 3601status_t AudioFlinger::RecordThread::RecordTrack::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3602{ 3603 audio_track_cblk_t* cblk = this->cblk(); 3604 uint32_t framesAvail; 3605 uint32_t framesReq = buffer->frameCount; 3606 3607 // Check if last stepServer failed, try to step now 3608 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3609 if (!step()) goto getNextBuffer_exit; 3610 LOGV("stepServer recovered"); 3611 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3612 } 3613 3614 framesAvail = cblk->framesAvailable_l(); 3615 3616 if (LIKELY(framesAvail)) { 3617 uint32_t s = cblk->server; 3618 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3619 3620 if (framesReq > framesAvail) { 3621 framesReq = framesAvail; 3622 } 3623 if (s + framesReq > bufferEnd) { 3624 framesReq = bufferEnd - s; 3625 } 3626 3627 buffer->raw = getBuffer(s, framesReq); 3628 if (buffer->raw == 0) goto getNextBuffer_exit; 3629 3630 buffer->frameCount = framesReq; 3631 return NO_ERROR; 3632 } 3633 3634getNextBuffer_exit: 3635 buffer->raw = 0; 3636 buffer->frameCount = 0; 3637 return NOT_ENOUGH_DATA; 3638} 3639 3640status_t AudioFlinger::RecordThread::RecordTrack::start() 3641{ 3642 sp<ThreadBase> thread = mThread.promote(); 3643 if (thread != 0) { 3644 RecordThread *recordThread = (RecordThread *)thread.get(); 3645 return recordThread->start(this); 3646 } else { 3647 return BAD_VALUE; 3648 } 3649} 3650 3651void AudioFlinger::RecordThread::RecordTrack::stop() 3652{ 3653 sp<ThreadBase> thread = mThread.promote(); 3654 if (thread != 0) { 3655 RecordThread *recordThread = (RecordThread *)thread.get(); 3656 recordThread->stop(this); 3657 TrackBase::reset(); 3658 // Force overerrun condition to avoid false overrun callback until first data is 3659 // read from buffer 3660 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3661 } 3662} 3663 3664void AudioFlinger::RecordThread::RecordTrack::dump(char* buffer, size_t size) 3665{ 3666 snprintf(buffer, size, " %05d %03u 0x%08x %05d %04u %01d %05u %08x %08x\n", 3667 (mClient == NULL) ? getpid() : mClient->pid(), 3668 mFormat, 3669 mChannelMask, 3670 mSessionId, 3671 mFrameCount, 3672 mState, 3673 mCblk->sampleRate, 3674 mCblk->server, 3675 mCblk->user); 3676} 3677 3678 3679// ---------------------------------------------------------------------------- 3680 3681AudioFlinger::PlaybackThread::OutputTrack::OutputTrack( 3682 const wp<ThreadBase>& thread, 3683 DuplicatingThread *sourceThread, 3684 uint32_t sampleRate, 3685 uint32_t format, 3686 uint32_t channelMask, 3687 int frameCount) 3688 : Track(thread, NULL, AUDIO_STREAM_CNT, sampleRate, format, channelMask, frameCount, NULL, 0), 3689 mActive(false), mSourceThread(sourceThread) 3690{ 3691 3692 PlaybackThread *playbackThread = (PlaybackThread *)thread.unsafe_get(); 3693 if (mCblk != NULL) { 3694 mCblk->flags |= CBLK_DIRECTION_OUT; 3695 mCblk->buffers = (char*)mCblk + sizeof(audio_track_cblk_t); 3696 mCblk->volume[0] = mCblk->volume[1] = 0x1000; 3697 mOutBuffer.frameCount = 0; 3698 playbackThread->mTracks.add(this); 3699 LOGV("OutputTrack constructor mCblk %p, mBuffer %p, mCblk->buffers %p, " \ 3700 "mCblk->frameCount %d, mCblk->sampleRate %d, mChannelMask 0x%08x mBufferEnd %p", 3701 mCblk, mBuffer, mCblk->buffers, 3702 mCblk->frameCount, mCblk->sampleRate, mChannelMask, mBufferEnd); 3703 } else { 3704 LOGW("Error creating output track on thread %p", playbackThread); 3705 } 3706} 3707 3708AudioFlinger::PlaybackThread::OutputTrack::~OutputTrack() 3709{ 3710 clearBufferQueue(); 3711} 3712 3713status_t AudioFlinger::PlaybackThread::OutputTrack::start() 3714{ 3715 status_t status = Track::start(); 3716 if (status != NO_ERROR) { 3717 return status; 3718 } 3719 3720 mActive = true; 3721 mRetryCount = 127; 3722 return status; 3723} 3724 3725void AudioFlinger::PlaybackThread::OutputTrack::stop() 3726{ 3727 Track::stop(); 3728 clearBufferQueue(); 3729 mOutBuffer.frameCount = 0; 3730 mActive = false; 3731} 3732 3733bool AudioFlinger::PlaybackThread::OutputTrack::write(int16_t* data, uint32_t frames) 3734{ 3735 Buffer *pInBuffer; 3736 Buffer inBuffer; 3737 uint32_t channelCount = mChannelCount; 3738 bool outputBufferFull = false; 3739 inBuffer.frameCount = frames; 3740 inBuffer.i16 = data; 3741 3742 uint32_t waitTimeLeftMs = mSourceThread->waitTimeMs(); 3743 3744 if (!mActive && frames != 0) { 3745 start(); 3746 sp<ThreadBase> thread = mThread.promote(); 3747 if (thread != 0) { 3748 MixerThread *mixerThread = (MixerThread *)thread.get(); 3749 if (mCblk->frameCount > frames){ 3750 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3751 uint32_t startFrames = (mCblk->frameCount - frames); 3752 pInBuffer = new Buffer; 3753 pInBuffer->mBuffer = new int16_t[startFrames * channelCount]; 3754 pInBuffer->frameCount = startFrames; 3755 pInBuffer->i16 = pInBuffer->mBuffer; 3756 memset(pInBuffer->raw, 0, startFrames * channelCount * sizeof(int16_t)); 3757 mBufferQueue.add(pInBuffer); 3758 } else { 3759 LOGW ("OutputTrack::write() %p no more buffers in queue", this); 3760 } 3761 } 3762 } 3763 } 3764 3765 while (waitTimeLeftMs) { 3766 // First write pending buffers, then new data 3767 if (mBufferQueue.size()) { 3768 pInBuffer = mBufferQueue.itemAt(0); 3769 } else { 3770 pInBuffer = &inBuffer; 3771 } 3772 3773 if (pInBuffer->frameCount == 0) { 3774 break; 3775 } 3776 3777 if (mOutBuffer.frameCount == 0) { 3778 mOutBuffer.frameCount = pInBuffer->frameCount; 3779 nsecs_t startTime = systemTime(); 3780 if (obtainBuffer(&mOutBuffer, waitTimeLeftMs) == (status_t)AudioTrack::NO_MORE_BUFFERS) { 3781 LOGV ("OutputTrack::write() %p thread %p no more output buffers", this, mThread.unsafe_get()); 3782 outputBufferFull = true; 3783 break; 3784 } 3785 uint32_t waitTimeMs = (uint32_t)ns2ms(systemTime() - startTime); 3786 if (waitTimeLeftMs >= waitTimeMs) { 3787 waitTimeLeftMs -= waitTimeMs; 3788 } else { 3789 waitTimeLeftMs = 0; 3790 } 3791 } 3792 3793 uint32_t outFrames = pInBuffer->frameCount > mOutBuffer.frameCount ? mOutBuffer.frameCount : pInBuffer->frameCount; 3794 memcpy(mOutBuffer.raw, pInBuffer->raw, outFrames * channelCount * sizeof(int16_t)); 3795 mCblk->stepUser(outFrames); 3796 pInBuffer->frameCount -= outFrames; 3797 pInBuffer->i16 += outFrames * channelCount; 3798 mOutBuffer.frameCount -= outFrames; 3799 mOutBuffer.i16 += outFrames * channelCount; 3800 3801 if (pInBuffer->frameCount == 0) { 3802 if (mBufferQueue.size()) { 3803 mBufferQueue.removeAt(0); 3804 delete [] pInBuffer->mBuffer; 3805 delete pInBuffer; 3806 LOGV("OutputTrack::write() %p thread %p released overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3807 } else { 3808 break; 3809 } 3810 } 3811 } 3812 3813 // If we could not write all frames, allocate a buffer and queue it for next time. 3814 if (inBuffer.frameCount) { 3815 sp<ThreadBase> thread = mThread.promote(); 3816 if (thread != 0 && !thread->standby()) { 3817 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3818 pInBuffer = new Buffer; 3819 pInBuffer->mBuffer = new int16_t[inBuffer.frameCount * channelCount]; 3820 pInBuffer->frameCount = inBuffer.frameCount; 3821 pInBuffer->i16 = pInBuffer->mBuffer; 3822 memcpy(pInBuffer->raw, inBuffer.raw, inBuffer.frameCount * channelCount * sizeof(int16_t)); 3823 mBufferQueue.add(pInBuffer); 3824 LOGV("OutputTrack::write() %p thread %p adding overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3825 } else { 3826 LOGW("OutputTrack::write() %p thread %p no more overflow buffers", mThread.unsafe_get(), this); 3827 } 3828 } 3829 } 3830 3831 // Calling write() with a 0 length buffer, means that no more data will be written: 3832 // If no more buffers are pending, fill output track buffer to make sure it is started 3833 // by output mixer. 3834 if (frames == 0 && mBufferQueue.size() == 0) { 3835 if (mCblk->user < mCblk->frameCount) { 3836 frames = mCblk->frameCount - mCblk->user; 3837 pInBuffer = new Buffer; 3838 pInBuffer->mBuffer = new int16_t[frames * channelCount]; 3839 pInBuffer->frameCount = frames; 3840 pInBuffer->i16 = pInBuffer->mBuffer; 3841 memset(pInBuffer->raw, 0, frames * channelCount * sizeof(int16_t)); 3842 mBufferQueue.add(pInBuffer); 3843 } else if (mActive) { 3844 stop(); 3845 } 3846 } 3847 3848 return outputBufferFull; 3849} 3850 3851status_t AudioFlinger::PlaybackThread::OutputTrack::obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs) 3852{ 3853 int active; 3854 status_t result; 3855 audio_track_cblk_t* cblk = mCblk; 3856 uint32_t framesReq = buffer->frameCount; 3857 3858// LOGV("OutputTrack::obtainBuffer user %d, server %d", cblk->user, cblk->server); 3859 buffer->frameCount = 0; 3860 3861 uint32_t framesAvail = cblk->framesAvailable(); 3862 3863 3864 if (framesAvail == 0) { 3865 Mutex::Autolock _l(cblk->lock); 3866 goto start_loop_here; 3867 while (framesAvail == 0) { 3868 active = mActive; 3869 if (UNLIKELY(!active)) { 3870 LOGV("Not active and NO_MORE_BUFFERS"); 3871 return AudioTrack::NO_MORE_BUFFERS; 3872 } 3873 result = cblk->cv.waitRelative(cblk->lock, milliseconds(waitTimeMs)); 3874 if (result != NO_ERROR) { 3875 return AudioTrack::NO_MORE_BUFFERS; 3876 } 3877 // read the server count again 3878 start_loop_here: 3879 framesAvail = cblk->framesAvailable_l(); 3880 } 3881 } 3882 3883// if (framesAvail < framesReq) { 3884// return AudioTrack::NO_MORE_BUFFERS; 3885// } 3886 3887 if (framesReq > framesAvail) { 3888 framesReq = framesAvail; 3889 } 3890 3891 uint32_t u = cblk->user; 3892 uint32_t bufferEnd = cblk->userBase + cblk->frameCount; 3893 3894 if (u + framesReq > bufferEnd) { 3895 framesReq = bufferEnd - u; 3896 } 3897 3898 buffer->frameCount = framesReq; 3899 buffer->raw = (void *)cblk->buffer(u); 3900 return NO_ERROR; 3901} 3902 3903 3904void AudioFlinger::PlaybackThread::OutputTrack::clearBufferQueue() 3905{ 3906 size_t size = mBufferQueue.size(); 3907 Buffer *pBuffer; 3908 3909 for (size_t i = 0; i < size; i++) { 3910 pBuffer = mBufferQueue.itemAt(i); 3911 delete [] pBuffer->mBuffer; 3912 delete pBuffer; 3913 } 3914 mBufferQueue.clear(); 3915} 3916 3917// ---------------------------------------------------------------------------- 3918 3919AudioFlinger::Client::Client(const sp<AudioFlinger>& audioFlinger, pid_t pid) 3920 : RefBase(), 3921 mAudioFlinger(audioFlinger), 3922 mMemoryDealer(new MemoryDealer(1024*1024, "AudioFlinger::Client")), 3923 mPid(pid) 3924{ 3925 // 1 MB of address space is good for 32 tracks, 8 buffers each, 4 KB/buffer 3926} 3927 3928// Client destructor must be called with AudioFlinger::mLock held 3929AudioFlinger::Client::~Client() 3930{ 3931 mAudioFlinger->removeClient_l(mPid); 3932} 3933 3934const sp<MemoryDealer>& AudioFlinger::Client::heap() const 3935{ 3936 return mMemoryDealer; 3937} 3938 3939// ---------------------------------------------------------------------------- 3940 3941AudioFlinger::NotificationClient::NotificationClient(const sp<AudioFlinger>& audioFlinger, 3942 const sp<IAudioFlingerClient>& client, 3943 pid_t pid) 3944 : mAudioFlinger(audioFlinger), mPid(pid), mClient(client) 3945{ 3946} 3947 3948AudioFlinger::NotificationClient::~NotificationClient() 3949{ 3950 mClient.clear(); 3951} 3952 3953void AudioFlinger::NotificationClient::binderDied(const wp<IBinder>& who) 3954{ 3955 sp<NotificationClient> keep(this); 3956 { 3957 mAudioFlinger->removeNotificationClient(mPid); 3958 } 3959} 3960 3961// ---------------------------------------------------------------------------- 3962 3963AudioFlinger::TrackHandle::TrackHandle(const sp<AudioFlinger::PlaybackThread::Track>& track) 3964 : BnAudioTrack(), 3965 mTrack(track) 3966{ 3967} 3968 3969AudioFlinger::TrackHandle::~TrackHandle() { 3970 // just stop the track on deletion, associated resources 3971 // will be freed from the main thread once all pending buffers have 3972 // been played. Unless it's not in the active track list, in which 3973 // case we free everything now... 3974 mTrack->destroy(); 3975} 3976 3977status_t AudioFlinger::TrackHandle::start() { 3978 return mTrack->start(); 3979} 3980 3981void AudioFlinger::TrackHandle::stop() { 3982 mTrack->stop(); 3983} 3984 3985void AudioFlinger::TrackHandle::flush() { 3986 mTrack->flush(); 3987} 3988 3989void AudioFlinger::TrackHandle::mute(bool e) { 3990 mTrack->mute(e); 3991} 3992 3993void AudioFlinger::TrackHandle::pause() { 3994 mTrack->pause(); 3995} 3996 3997void AudioFlinger::TrackHandle::setVolume(float left, float right) { 3998 mTrack->setVolume(left, right); 3999} 4000 4001sp<IMemory> AudioFlinger::TrackHandle::getCblk() const { 4002 return mTrack->getCblk(); 4003} 4004 4005status_t AudioFlinger::TrackHandle::attachAuxEffect(int EffectId) 4006{ 4007 return mTrack->attachAuxEffect(EffectId); 4008} 4009 4010status_t AudioFlinger::TrackHandle::onTransact( 4011 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 4012{ 4013 return BnAudioTrack::onTransact(code, data, reply, flags); 4014} 4015 4016// ---------------------------------------------------------------------------- 4017 4018sp<IAudioRecord> AudioFlinger::openRecord( 4019 pid_t pid, 4020 int input, 4021 uint32_t sampleRate, 4022 uint32_t format, 4023 uint32_t channelMask, 4024 int frameCount, 4025 uint32_t flags, 4026 int *sessionId, 4027 status_t *status) 4028{ 4029 sp<RecordThread::RecordTrack> recordTrack; 4030 sp<RecordHandle> recordHandle; 4031 sp<Client> client; 4032 wp<Client> wclient; 4033 status_t lStatus; 4034 RecordThread *thread; 4035 size_t inFrameCount; 4036 int lSessionId; 4037 4038 // check calling permissions 4039 if (!recordingAllowed()) { 4040 lStatus = PERMISSION_DENIED; 4041 goto Exit; 4042 } 4043 4044 // add client to list 4045 { // scope for mLock 4046 Mutex::Autolock _l(mLock); 4047 thread = checkRecordThread_l(input); 4048 if (thread == NULL) { 4049 lStatus = BAD_VALUE; 4050 goto Exit; 4051 } 4052 4053 wclient = mClients.valueFor(pid); 4054 if (wclient != NULL) { 4055 client = wclient.promote(); 4056 } else { 4057 client = new Client(this, pid); 4058 mClients.add(pid, client); 4059 } 4060 4061 // If no audio session id is provided, create one here 4062 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 4063 lSessionId = *sessionId; 4064 } else { 4065 lSessionId = nextUniqueId(); 4066 if (sessionId != NULL) { 4067 *sessionId = lSessionId; 4068 } 4069 } 4070 // create new record track. The record track uses one track in mHardwareMixerThread by convention. 4071 recordTrack = thread->createRecordTrack_l(client, 4072 sampleRate, 4073 format, 4074 channelMask, 4075 frameCount, 4076 flags, 4077 lSessionId, 4078 &lStatus); 4079 } 4080 if (lStatus != NO_ERROR) { 4081 // remove local strong reference to Client before deleting the RecordTrack so that the Client 4082 // destructor is called by the TrackBase destructor with mLock held 4083 client.clear(); 4084 recordTrack.clear(); 4085 goto Exit; 4086 } 4087 4088 // return to handle to client 4089 recordHandle = new RecordHandle(recordTrack); 4090 lStatus = NO_ERROR; 4091 4092Exit: 4093 if (status) { 4094 *status = lStatus; 4095 } 4096 return recordHandle; 4097} 4098 4099// ---------------------------------------------------------------------------- 4100 4101AudioFlinger::RecordHandle::RecordHandle(const sp<AudioFlinger::RecordThread::RecordTrack>& recordTrack) 4102 : BnAudioRecord(), 4103 mRecordTrack(recordTrack) 4104{ 4105} 4106 4107AudioFlinger::RecordHandle::~RecordHandle() { 4108 stop(); 4109} 4110 4111status_t AudioFlinger::RecordHandle::start() { 4112 LOGV("RecordHandle::start()"); 4113 return mRecordTrack->start(); 4114} 4115 4116void AudioFlinger::RecordHandle::stop() { 4117 LOGV("RecordHandle::stop()"); 4118 mRecordTrack->stop(); 4119} 4120 4121sp<IMemory> AudioFlinger::RecordHandle::getCblk() const { 4122 return mRecordTrack->getCblk(); 4123} 4124 4125status_t AudioFlinger::RecordHandle::onTransact( 4126 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 4127{ 4128 return BnAudioRecord::onTransact(code, data, reply, flags); 4129} 4130 4131// ---------------------------------------------------------------------------- 4132 4133AudioFlinger::RecordThread::RecordThread(const sp<AudioFlinger>& audioFlinger, 4134 AudioStreamIn *input, 4135 uint32_t sampleRate, 4136 uint32_t channels, 4137 int id, 4138 uint32_t device) : 4139 ThreadBase(audioFlinger, id, device), 4140 mInput(input), mTrack(NULL), mResampler(0), mRsmpOutBuffer(0), mRsmpInBuffer(0) 4141{ 4142 mType = ThreadBase::RECORD; 4143 4144 snprintf(mName, kNameLength, "AudioIn_%d", id); 4145 4146 mReqChannelCount = popcount(channels); 4147 mReqSampleRate = sampleRate; 4148 readInputParameters(); 4149} 4150 4151 4152AudioFlinger::RecordThread::~RecordThread() 4153{ 4154 delete[] mRsmpInBuffer; 4155 if (mResampler != 0) { 4156 delete mResampler; 4157 delete[] mRsmpOutBuffer; 4158 } 4159} 4160 4161void AudioFlinger::RecordThread::onFirstRef() 4162{ 4163 run(mName, PRIORITY_URGENT_AUDIO); 4164} 4165 4166status_t AudioFlinger::RecordThread::readyToRun() 4167{ 4168 status_t status = initCheck(); 4169 LOGW_IF(status != NO_ERROR,"RecordThread %p could not initialize", this); 4170 return status; 4171} 4172 4173bool AudioFlinger::RecordThread::threadLoop() 4174{ 4175 AudioBufferProvider::Buffer buffer; 4176 sp<RecordTrack> activeTrack; 4177 Vector< sp<EffectChain> > effectChains; 4178 4179 nsecs_t lastWarning = 0; 4180 4181 acquireWakeLock(); 4182 4183 // start recording 4184 while (!exitPending()) { 4185 4186 processConfigEvents(); 4187 4188 { // scope for mLock 4189 Mutex::Autolock _l(mLock); 4190 checkForNewParameters_l(); 4191 if (mActiveTrack == 0 && mConfigEvents.isEmpty()) { 4192 if (!mStandby) { 4193 mInput->stream->common.standby(&mInput->stream->common); 4194 mStandby = true; 4195 } 4196 4197 if (exitPending()) break; 4198 4199 releaseWakeLock_l(); 4200 LOGV("RecordThread: loop stopping"); 4201 // go to sleep 4202 mWaitWorkCV.wait(mLock); 4203 LOGV("RecordThread: loop starting"); 4204 acquireWakeLock_l(); 4205 continue; 4206 } 4207 if (mActiveTrack != 0) { 4208 if (mActiveTrack->mState == TrackBase::PAUSING) { 4209 if (!mStandby) { 4210 mInput->stream->common.standby(&mInput->stream->common); 4211 mStandby = true; 4212 } 4213 mActiveTrack.clear(); 4214 mStartStopCond.broadcast(); 4215 } else if (mActiveTrack->mState == TrackBase::RESUMING) { 4216 if (mReqChannelCount != mActiveTrack->channelCount()) { 4217 mActiveTrack.clear(); 4218 mStartStopCond.broadcast(); 4219 } else if (mBytesRead != 0) { 4220 // record start succeeds only if first read from audio input 4221 // succeeds 4222 if (mBytesRead > 0) { 4223 mActiveTrack->mState = TrackBase::ACTIVE; 4224 } else { 4225 mActiveTrack.clear(); 4226 } 4227 mStartStopCond.broadcast(); 4228 } 4229 mStandby = false; 4230 } 4231 } 4232 lockEffectChains_l(effectChains); 4233 } 4234 4235 if (mActiveTrack != 0) { 4236 if (mActiveTrack->mState != TrackBase::ACTIVE && 4237 mActiveTrack->mState != TrackBase::RESUMING) { 4238 unlockEffectChains(effectChains); 4239 usleep(kRecordThreadSleepUs); 4240 continue; 4241 } 4242 for (size_t i = 0; i < effectChains.size(); i ++) { 4243 effectChains[i]->process_l(); 4244 } 4245 4246 buffer.frameCount = mFrameCount; 4247 if (LIKELY(mActiveTrack->getNextBuffer(&buffer) == NO_ERROR)) { 4248 size_t framesOut = buffer.frameCount; 4249 if (mResampler == 0) { 4250 // no resampling 4251 while (framesOut) { 4252 size_t framesIn = mFrameCount - mRsmpInIndex; 4253 if (framesIn) { 4254 int8_t *src = (int8_t *)mRsmpInBuffer + mRsmpInIndex * mFrameSize; 4255 int8_t *dst = buffer.i8 + (buffer.frameCount - framesOut) * mActiveTrack->mCblk->frameSize; 4256 if (framesIn > framesOut) 4257 framesIn = framesOut; 4258 mRsmpInIndex += framesIn; 4259 framesOut -= framesIn; 4260 if ((int)mChannelCount == mReqChannelCount || 4261 mFormat != AUDIO_FORMAT_PCM_16_BIT) { 4262 memcpy(dst, src, framesIn * mFrameSize); 4263 } else { 4264 int16_t *src16 = (int16_t *)src; 4265 int16_t *dst16 = (int16_t *)dst; 4266 if (mChannelCount == 1) { 4267 while (framesIn--) { 4268 *dst16++ = *src16; 4269 *dst16++ = *src16++; 4270 } 4271 } else { 4272 while (framesIn--) { 4273 *dst16++ = (int16_t)(((int32_t)*src16 + (int32_t)*(src16 + 1)) >> 1); 4274 src16 += 2; 4275 } 4276 } 4277 } 4278 } 4279 if (framesOut && mFrameCount == mRsmpInIndex) { 4280 if (framesOut == mFrameCount && 4281 ((int)mChannelCount == mReqChannelCount || mFormat != AUDIO_FORMAT_PCM_16_BIT)) { 4282 mBytesRead = mInput->stream->read(mInput->stream, buffer.raw, mInputBytes); 4283 framesOut = 0; 4284 } else { 4285 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 4286 mRsmpInIndex = 0; 4287 } 4288 if (mBytesRead < 0) { 4289 LOGE("Error reading audio input"); 4290 if (mActiveTrack->mState == TrackBase::ACTIVE) { 4291 // Force input into standby so that it tries to 4292 // recover at next read attempt 4293 mInput->stream->common.standby(&mInput->stream->common); 4294 usleep(kRecordThreadSleepUs); 4295 } 4296 mRsmpInIndex = mFrameCount; 4297 framesOut = 0; 4298 buffer.frameCount = 0; 4299 } 4300 } 4301 } 4302 } else { 4303 // resampling 4304 4305 memset(mRsmpOutBuffer, 0, framesOut * 2 * sizeof(int32_t)); 4306 // alter output frame count as if we were expecting stereo samples 4307 if (mChannelCount == 1 && mReqChannelCount == 1) { 4308 framesOut >>= 1; 4309 } 4310 mResampler->resample(mRsmpOutBuffer, framesOut, this); 4311 // ditherAndClamp() works as long as all buffers returned by mActiveTrack->getNextBuffer() 4312 // are 32 bit aligned which should be always true. 4313 if (mChannelCount == 2 && mReqChannelCount == 1) { 4314 AudioMixer::ditherAndClamp(mRsmpOutBuffer, mRsmpOutBuffer, framesOut); 4315 // the resampler always outputs stereo samples: do post stereo to mono conversion 4316 int16_t *src = (int16_t *)mRsmpOutBuffer; 4317 int16_t *dst = buffer.i16; 4318 while (framesOut--) { 4319 *dst++ = (int16_t)(((int32_t)*src + (int32_t)*(src + 1)) >> 1); 4320 src += 2; 4321 } 4322 } else { 4323 AudioMixer::ditherAndClamp((int32_t *)buffer.raw, mRsmpOutBuffer, framesOut); 4324 } 4325 4326 } 4327 mActiveTrack->releaseBuffer(&buffer); 4328 mActiveTrack->overflow(); 4329 } 4330 // client isn't retrieving buffers fast enough 4331 else { 4332 if (!mActiveTrack->setOverflow()) { 4333 nsecs_t now = systemTime(); 4334 if ((now - lastWarning) > kWarningThrottle) { 4335 LOGW("RecordThread: buffer overflow"); 4336 lastWarning = now; 4337 } 4338 } 4339 // Release the processor for a while before asking for a new buffer. 4340 // This will give the application more chance to read from the buffer and 4341 // clear the overflow. 4342 usleep(kRecordThreadSleepUs); 4343 } 4344 } 4345 // enable changes in effect chain 4346 unlockEffectChains(effectChains); 4347 effectChains.clear(); 4348 } 4349 4350 if (!mStandby) { 4351 mInput->stream->common.standby(&mInput->stream->common); 4352 } 4353 mActiveTrack.clear(); 4354 4355 mStartStopCond.broadcast(); 4356 4357 releaseWakeLock(); 4358 4359 LOGV("RecordThread %p exiting", this); 4360 return false; 4361} 4362 4363 4364sp<AudioFlinger::RecordThread::RecordTrack> AudioFlinger::RecordThread::createRecordTrack_l( 4365 const sp<AudioFlinger::Client>& client, 4366 uint32_t sampleRate, 4367 int format, 4368 int channelMask, 4369 int frameCount, 4370 uint32_t flags, 4371 int sessionId, 4372 status_t *status) 4373{ 4374 sp<RecordTrack> track; 4375 status_t lStatus; 4376 4377 lStatus = initCheck(); 4378 if (lStatus != NO_ERROR) { 4379 LOGE("Audio driver not initialized."); 4380 goto Exit; 4381 } 4382 4383 { // scope for mLock 4384 Mutex::Autolock _l(mLock); 4385 4386 track = new RecordTrack(this, client, sampleRate, 4387 format, channelMask, frameCount, flags, sessionId); 4388 4389 if (track->getCblk() == NULL) { 4390 lStatus = NO_MEMORY; 4391 goto Exit; 4392 } 4393 4394 mTrack = track.get(); 4395 // disable AEC and NS if the device is a BT SCO headset supporting those pre processings 4396 bool suspend = audio_is_bluetooth_sco_device( 4397 (audio_devices_t)(mDevice & AUDIO_DEVICE_IN_ALL)) && mAudioFlinger->btNrecIsOff(); 4398 setEffectSuspended_l(FX_IID_AEC, suspend, sessionId); 4399 setEffectSuspended_l(FX_IID_NS, suspend, sessionId); 4400 } 4401 lStatus = NO_ERROR; 4402 4403Exit: 4404 if (status) { 4405 *status = lStatus; 4406 } 4407 return track; 4408} 4409 4410status_t AudioFlinger::RecordThread::start(RecordThread::RecordTrack* recordTrack) 4411{ 4412 LOGV("RecordThread::start"); 4413 sp <ThreadBase> strongMe = this; 4414 status_t status = NO_ERROR; 4415 { 4416 AutoMutex lock(&mLock); 4417 if (mActiveTrack != 0) { 4418 if (recordTrack != mActiveTrack.get()) { 4419 status = -EBUSY; 4420 } else if (mActiveTrack->mState == TrackBase::PAUSING) { 4421 mActiveTrack->mState = TrackBase::ACTIVE; 4422 } 4423 return status; 4424 } 4425 4426 recordTrack->mState = TrackBase::IDLE; 4427 mActiveTrack = recordTrack; 4428 mLock.unlock(); 4429 status_t status = AudioSystem::startInput(mId); 4430 mLock.lock(); 4431 if (status != NO_ERROR) { 4432 mActiveTrack.clear(); 4433 return status; 4434 } 4435 mRsmpInIndex = mFrameCount; 4436 mBytesRead = 0; 4437 if (mResampler != NULL) { 4438 mResampler->reset(); 4439 } 4440 mActiveTrack->mState = TrackBase::RESUMING; 4441 // signal thread to start 4442 LOGV("Signal record thread"); 4443 mWaitWorkCV.signal(); 4444 // do not wait for mStartStopCond if exiting 4445 if (mExiting) { 4446 mActiveTrack.clear(); 4447 status = INVALID_OPERATION; 4448 goto startError; 4449 } 4450 mStartStopCond.wait(mLock); 4451 if (mActiveTrack == 0) { 4452 LOGV("Record failed to start"); 4453 status = BAD_VALUE; 4454 goto startError; 4455 } 4456 LOGV("Record started OK"); 4457 return status; 4458 } 4459startError: 4460 AudioSystem::stopInput(mId); 4461 return status; 4462} 4463 4464void AudioFlinger::RecordThread::stop(RecordThread::RecordTrack* recordTrack) { 4465 LOGV("RecordThread::stop"); 4466 sp <ThreadBase> strongMe = this; 4467 { 4468 AutoMutex lock(&mLock); 4469 if (mActiveTrack != 0 && recordTrack == mActiveTrack.get()) { 4470 mActiveTrack->mState = TrackBase::PAUSING; 4471 // do not wait for mStartStopCond if exiting 4472 if (mExiting) { 4473 return; 4474 } 4475 mStartStopCond.wait(mLock); 4476 // if we have been restarted, recordTrack == mActiveTrack.get() here 4477 if (mActiveTrack == 0 || recordTrack != mActiveTrack.get()) { 4478 mLock.unlock(); 4479 AudioSystem::stopInput(mId); 4480 mLock.lock(); 4481 LOGV("Record stopped OK"); 4482 } 4483 } 4484 } 4485} 4486 4487status_t AudioFlinger::RecordThread::dump(int fd, const Vector<String16>& args) 4488{ 4489 const size_t SIZE = 256; 4490 char buffer[SIZE]; 4491 String8 result; 4492 pid_t pid = 0; 4493 4494 snprintf(buffer, SIZE, "\nInput thread %p internals\n", this); 4495 result.append(buffer); 4496 4497 if (mActiveTrack != 0) { 4498 result.append("Active Track:\n"); 4499 result.append(" Clien Fmt Chn mask Session Buf S SRate Serv User\n"); 4500 mActiveTrack->dump(buffer, SIZE); 4501 result.append(buffer); 4502 4503 snprintf(buffer, SIZE, "In index: %d\n", mRsmpInIndex); 4504 result.append(buffer); 4505 snprintf(buffer, SIZE, "In size: %d\n", mInputBytes); 4506 result.append(buffer); 4507 snprintf(buffer, SIZE, "Resampling: %d\n", (mResampler != 0)); 4508 result.append(buffer); 4509 snprintf(buffer, SIZE, "Out channel count: %d\n", mReqChannelCount); 4510 result.append(buffer); 4511 snprintf(buffer, SIZE, "Out sample rate: %d\n", mReqSampleRate); 4512 result.append(buffer); 4513 4514 4515 } else { 4516 result.append("No record client\n"); 4517 } 4518 write(fd, result.string(), result.size()); 4519 4520 dumpBase(fd, args); 4521 dumpEffectChains(fd, args); 4522 4523 return NO_ERROR; 4524} 4525 4526status_t AudioFlinger::RecordThread::getNextBuffer(AudioBufferProvider::Buffer* buffer) 4527{ 4528 size_t framesReq = buffer->frameCount; 4529 size_t framesReady = mFrameCount - mRsmpInIndex; 4530 int channelCount; 4531 4532 if (framesReady == 0) { 4533 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 4534 if (mBytesRead < 0) { 4535 LOGE("RecordThread::getNextBuffer() Error reading audio input"); 4536 if (mActiveTrack->mState == TrackBase::ACTIVE) { 4537 // Force input into standby so that it tries to 4538 // recover at next read attempt 4539 mInput->stream->common.standby(&mInput->stream->common); 4540 usleep(kRecordThreadSleepUs); 4541 } 4542 buffer->raw = 0; 4543 buffer->frameCount = 0; 4544 return NOT_ENOUGH_DATA; 4545 } 4546 mRsmpInIndex = 0; 4547 framesReady = mFrameCount; 4548 } 4549 4550 if (framesReq > framesReady) { 4551 framesReq = framesReady; 4552 } 4553 4554 if (mChannelCount == 1 && mReqChannelCount == 2) { 4555 channelCount = 1; 4556 } else { 4557 channelCount = 2; 4558 } 4559 buffer->raw = mRsmpInBuffer + mRsmpInIndex * channelCount; 4560 buffer->frameCount = framesReq; 4561 return NO_ERROR; 4562} 4563 4564void AudioFlinger::RecordThread::releaseBuffer(AudioBufferProvider::Buffer* buffer) 4565{ 4566 mRsmpInIndex += buffer->frameCount; 4567 buffer->frameCount = 0; 4568} 4569 4570bool AudioFlinger::RecordThread::checkForNewParameters_l() 4571{ 4572 bool reconfig = false; 4573 4574 while (!mNewParameters.isEmpty()) { 4575 status_t status = NO_ERROR; 4576 String8 keyValuePair = mNewParameters[0]; 4577 AudioParameter param = AudioParameter(keyValuePair); 4578 int value; 4579 int reqFormat = mFormat; 4580 int reqSamplingRate = mReqSampleRate; 4581 int reqChannelCount = mReqChannelCount; 4582 4583 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 4584 reqSamplingRate = value; 4585 reconfig = true; 4586 } 4587 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 4588 reqFormat = value; 4589 reconfig = true; 4590 } 4591 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 4592 reqChannelCount = popcount(value); 4593 reconfig = true; 4594 } 4595 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 4596 // do not accept frame count changes if tracks are open as the track buffer 4597 // size depends on frame count and correct behavior would not be garantied 4598 // if frame count is changed after track creation 4599 if (mActiveTrack != 0) { 4600 status = INVALID_OPERATION; 4601 } else { 4602 reconfig = true; 4603 } 4604 } 4605 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 4606 // forward device change to effects that have requested to be 4607 // aware of attached audio device. 4608 for (size_t i = 0; i < mEffectChains.size(); i++) { 4609 mEffectChains[i]->setDevice_l(value); 4610 } 4611 // store input device and output device but do not forward output device to audio HAL. 4612 // Note that status is ignored by the caller for output device 4613 // (see AudioFlinger::setParameters() 4614 if (value & AUDIO_DEVICE_OUT_ALL) { 4615 mDevice &= (uint32_t)~(value & AUDIO_DEVICE_OUT_ALL); 4616 status = BAD_VALUE; 4617 } else { 4618 mDevice &= (uint32_t)~(value & AUDIO_DEVICE_IN_ALL); 4619 // disable AEC and NS if the device is a BT SCO headset supporting those pre processings 4620 if (mTrack != NULL) { 4621 bool suspend = audio_is_bluetooth_sco_device( 4622 (audio_devices_t)value) && mAudioFlinger->btNrecIsOff(); 4623 setEffectSuspended_l(FX_IID_AEC, suspend, mTrack->sessionId()); 4624 setEffectSuspended_l(FX_IID_NS, suspend, mTrack->sessionId()); 4625 } 4626 } 4627 mDevice |= (uint32_t)value; 4628 } 4629 if (status == NO_ERROR) { 4630 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4631 if (status == INVALID_OPERATION) { 4632 mInput->stream->common.standby(&mInput->stream->common); 4633 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4634 } 4635 if (reconfig) { 4636 if (status == BAD_VALUE && 4637 reqFormat == mInput->stream->common.get_format(&mInput->stream->common) && 4638 reqFormat == AUDIO_FORMAT_PCM_16_BIT && 4639 ((int)mInput->stream->common.get_sample_rate(&mInput->stream->common) <= (2 * reqSamplingRate)) && 4640 (popcount(mInput->stream->common.get_channels(&mInput->stream->common)) < 3) && 4641 (reqChannelCount < 3)) { 4642 status = NO_ERROR; 4643 } 4644 if (status == NO_ERROR) { 4645 readInputParameters(); 4646 sendConfigEvent_l(AudioSystem::INPUT_CONFIG_CHANGED); 4647 } 4648 } 4649 } 4650 4651 mNewParameters.removeAt(0); 4652 4653 mParamStatus = status; 4654 mParamCond.signal(); 4655 mWaitWorkCV.wait(mLock); 4656 } 4657 return reconfig; 4658} 4659 4660String8 AudioFlinger::RecordThread::getParameters(const String8& keys) 4661{ 4662 char *s; 4663 String8 out_s8 = String8(); 4664 4665 Mutex::Autolock _l(mLock); 4666 if (initCheck() != NO_ERROR) { 4667 return out_s8; 4668 } 4669 4670 s = mInput->stream->common.get_parameters(&mInput->stream->common, keys.string()); 4671 out_s8 = String8(s); 4672 free(s); 4673 return out_s8; 4674} 4675 4676void AudioFlinger::RecordThread::audioConfigChanged_l(int event, int param) { 4677 AudioSystem::OutputDescriptor desc; 4678 void *param2 = 0; 4679 4680 switch (event) { 4681 case AudioSystem::INPUT_OPENED: 4682 case AudioSystem::INPUT_CONFIG_CHANGED: 4683 desc.channels = mChannelMask; 4684 desc.samplingRate = mSampleRate; 4685 desc.format = mFormat; 4686 desc.frameCount = mFrameCount; 4687 desc.latency = 0; 4688 param2 = &desc; 4689 break; 4690 4691 case AudioSystem::INPUT_CLOSED: 4692 default: 4693 break; 4694 } 4695 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 4696} 4697 4698void AudioFlinger::RecordThread::readInputParameters() 4699{ 4700 if (mRsmpInBuffer) delete mRsmpInBuffer; 4701 if (mRsmpOutBuffer) delete mRsmpOutBuffer; 4702 if (mResampler) delete mResampler; 4703 mResampler = 0; 4704 4705 mSampleRate = mInput->stream->common.get_sample_rate(&mInput->stream->common); 4706 mChannelMask = mInput->stream->common.get_channels(&mInput->stream->common); 4707 mChannelCount = (uint16_t)popcount(mChannelMask); 4708 mFormat = mInput->stream->common.get_format(&mInput->stream->common); 4709 mFrameSize = (uint16_t)audio_stream_frame_size(&mInput->stream->common); 4710 mInputBytes = mInput->stream->common.get_buffer_size(&mInput->stream->common); 4711 mFrameCount = mInputBytes / mFrameSize; 4712 mRsmpInBuffer = new int16_t[mFrameCount * mChannelCount]; 4713 4714 if (mSampleRate != mReqSampleRate && mChannelCount < 3 && mReqChannelCount < 3) 4715 { 4716 int channelCount; 4717 // optmization: if mono to mono, use the resampler in stereo to stereo mode to avoid 4718 // stereo to mono post process as the resampler always outputs stereo. 4719 if (mChannelCount == 1 && mReqChannelCount == 2) { 4720 channelCount = 1; 4721 } else { 4722 channelCount = 2; 4723 } 4724 mResampler = AudioResampler::create(16, channelCount, mReqSampleRate); 4725 mResampler->setSampleRate(mSampleRate); 4726 mResampler->setVolume(AudioMixer::UNITY_GAIN, AudioMixer::UNITY_GAIN); 4727 mRsmpOutBuffer = new int32_t[mFrameCount * 2]; 4728 4729 // optmization: if mono to mono, alter input frame count as if we were inputing stereo samples 4730 if (mChannelCount == 1 && mReqChannelCount == 1) { 4731 mFrameCount >>= 1; 4732 } 4733 4734 } 4735 mRsmpInIndex = mFrameCount; 4736} 4737 4738unsigned int AudioFlinger::RecordThread::getInputFramesLost() 4739{ 4740 Mutex::Autolock _l(mLock); 4741 if (initCheck() != NO_ERROR) { 4742 return 0; 4743 } 4744 4745 return mInput->stream->get_input_frames_lost(mInput->stream); 4746} 4747 4748uint32_t AudioFlinger::RecordThread::hasAudioSession(int sessionId) 4749{ 4750 Mutex::Autolock _l(mLock); 4751 uint32_t result = 0; 4752 if (getEffectChain_l(sessionId) != 0) { 4753 result = EFFECT_SESSION; 4754 } 4755 4756 if (mTrack != NULL && sessionId == mTrack->sessionId()) { 4757 result |= TRACK_SESSION; 4758 } 4759 4760 return result; 4761} 4762 4763AudioFlinger::RecordThread::RecordTrack* AudioFlinger::RecordThread::track() 4764{ 4765 Mutex::Autolock _l(mLock); 4766 return mTrack; 4767} 4768 4769AudioFlinger::AudioStreamIn* AudioFlinger::RecordThread::getInput() 4770{ 4771 Mutex::Autolock _l(mLock); 4772 return mInput; 4773} 4774 4775AudioFlinger::AudioStreamIn* AudioFlinger::RecordThread::clearInput() 4776{ 4777 Mutex::Autolock _l(mLock); 4778 AudioStreamIn *input = mInput; 4779 mInput = NULL; 4780 return input; 4781} 4782 4783// this method must always be called either with ThreadBase mLock held or inside the thread loop 4784audio_stream_t* AudioFlinger::RecordThread::stream() 4785{ 4786 if (mInput == NULL) { 4787 return NULL; 4788 } 4789 return &mInput->stream->common; 4790} 4791 4792 4793// ---------------------------------------------------------------------------- 4794 4795int AudioFlinger::openOutput(uint32_t *pDevices, 4796 uint32_t *pSamplingRate, 4797 uint32_t *pFormat, 4798 uint32_t *pChannels, 4799 uint32_t *pLatencyMs, 4800 uint32_t flags) 4801{ 4802 status_t status; 4803 PlaybackThread *thread = NULL; 4804 mHardwareStatus = AUDIO_HW_OUTPUT_OPEN; 4805 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4806 uint32_t format = pFormat ? *pFormat : 0; 4807 uint32_t channels = pChannels ? *pChannels : 0; 4808 uint32_t latency = pLatencyMs ? *pLatencyMs : 0; 4809 audio_stream_out_t *outStream; 4810 audio_hw_device_t *outHwDev; 4811 4812 LOGV("openOutput(), Device %x, SamplingRate %d, Format %d, Channels %x, flags %x", 4813 pDevices ? *pDevices : 0, 4814 samplingRate, 4815 format, 4816 channels, 4817 flags); 4818 4819 if (pDevices == NULL || *pDevices == 0) { 4820 return 0; 4821 } 4822 4823 Mutex::Autolock _l(mLock); 4824 4825 outHwDev = findSuitableHwDev_l(*pDevices); 4826 if (outHwDev == NULL) 4827 return 0; 4828 4829 status = outHwDev->open_output_stream(outHwDev, *pDevices, (int *)&format, 4830 &channels, &samplingRate, &outStream); 4831 LOGV("openOutput() openOutputStream returned output %p, SamplingRate %d, Format %d, Channels %x, status %d", 4832 outStream, 4833 samplingRate, 4834 format, 4835 channels, 4836 status); 4837 4838 mHardwareStatus = AUDIO_HW_IDLE; 4839 if (outStream != NULL) { 4840 AudioStreamOut *output = new AudioStreamOut(outHwDev, outStream); 4841 int id = nextUniqueId(); 4842 4843 if ((flags & AUDIO_POLICY_OUTPUT_FLAG_DIRECT) || 4844 (format != AUDIO_FORMAT_PCM_16_BIT) || 4845 (channels != AUDIO_CHANNEL_OUT_STEREO)) { 4846 thread = new DirectOutputThread(this, output, id, *pDevices); 4847 LOGV("openOutput() created direct output: ID %d thread %p", id, thread); 4848 } else { 4849 thread = new MixerThread(this, output, id, *pDevices); 4850 LOGV("openOutput() created mixer output: ID %d thread %p", id, thread); 4851 } 4852 mPlaybackThreads.add(id, thread); 4853 4854 if (pSamplingRate) *pSamplingRate = samplingRate; 4855 if (pFormat) *pFormat = format; 4856 if (pChannels) *pChannels = channels; 4857 if (pLatencyMs) *pLatencyMs = thread->latency(); 4858 4859 // notify client processes of the new output creation 4860 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4861 return id; 4862 } 4863 4864 return 0; 4865} 4866 4867int AudioFlinger::openDuplicateOutput(int output1, int output2) 4868{ 4869 Mutex::Autolock _l(mLock); 4870 MixerThread *thread1 = checkMixerThread_l(output1); 4871 MixerThread *thread2 = checkMixerThread_l(output2); 4872 4873 if (thread1 == NULL || thread2 == NULL) { 4874 LOGW("openDuplicateOutput() wrong output mixer type for output %d or %d", output1, output2); 4875 return 0; 4876 } 4877 4878 int id = nextUniqueId(); 4879 DuplicatingThread *thread = new DuplicatingThread(this, thread1, id); 4880 thread->addOutputTrack(thread2); 4881 mPlaybackThreads.add(id, thread); 4882 // notify client processes of the new output creation 4883 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4884 return id; 4885} 4886 4887status_t AudioFlinger::closeOutput(int output) 4888{ 4889 // keep strong reference on the playback thread so that 4890 // it is not destroyed while exit() is executed 4891 sp <PlaybackThread> thread; 4892 { 4893 Mutex::Autolock _l(mLock); 4894 thread = checkPlaybackThread_l(output); 4895 if (thread == NULL) { 4896 return BAD_VALUE; 4897 } 4898 4899 LOGV("closeOutput() %d", output); 4900 4901 if (thread->type() == ThreadBase::MIXER) { 4902 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4903 if (mPlaybackThreads.valueAt(i)->type() == ThreadBase::DUPLICATING) { 4904 DuplicatingThread *dupThread = (DuplicatingThread *)mPlaybackThreads.valueAt(i).get(); 4905 dupThread->removeOutputTrack((MixerThread *)thread.get()); 4906 } 4907 } 4908 } 4909 void *param2 = 0; 4910 audioConfigChanged_l(AudioSystem::OUTPUT_CLOSED, output, param2); 4911 mPlaybackThreads.removeItem(output); 4912 } 4913 thread->exit(); 4914 4915 if (thread->type() != ThreadBase::DUPLICATING) { 4916 AudioStreamOut *out = thread->clearOutput(); 4917 // from now on thread->mOutput is NULL 4918 out->hwDev->close_output_stream(out->hwDev, out->stream); 4919 delete out; 4920 } 4921 return NO_ERROR; 4922} 4923 4924status_t AudioFlinger::suspendOutput(int output) 4925{ 4926 Mutex::Autolock _l(mLock); 4927 PlaybackThread *thread = checkPlaybackThread_l(output); 4928 4929 if (thread == NULL) { 4930 return BAD_VALUE; 4931 } 4932 4933 LOGV("suspendOutput() %d", output); 4934 thread->suspend(); 4935 4936 return NO_ERROR; 4937} 4938 4939status_t AudioFlinger::restoreOutput(int output) 4940{ 4941 Mutex::Autolock _l(mLock); 4942 PlaybackThread *thread = checkPlaybackThread_l(output); 4943 4944 if (thread == NULL) { 4945 return BAD_VALUE; 4946 } 4947 4948 LOGV("restoreOutput() %d", output); 4949 4950 thread->restore(); 4951 4952 return NO_ERROR; 4953} 4954 4955int AudioFlinger::openInput(uint32_t *pDevices, 4956 uint32_t *pSamplingRate, 4957 uint32_t *pFormat, 4958 uint32_t *pChannels, 4959 uint32_t acoustics) 4960{ 4961 status_t status; 4962 RecordThread *thread = NULL; 4963 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4964 uint32_t format = pFormat ? *pFormat : 0; 4965 uint32_t channels = pChannels ? *pChannels : 0; 4966 uint32_t reqSamplingRate = samplingRate; 4967 uint32_t reqFormat = format; 4968 uint32_t reqChannels = channels; 4969 audio_stream_in_t *inStream; 4970 audio_hw_device_t *inHwDev; 4971 4972 if (pDevices == NULL || *pDevices == 0) { 4973 return 0; 4974 } 4975 4976 Mutex::Autolock _l(mLock); 4977 4978 inHwDev = findSuitableHwDev_l(*pDevices); 4979 if (inHwDev == NULL) 4980 return 0; 4981 4982 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 4983 &channels, &samplingRate, 4984 (audio_in_acoustics_t)acoustics, 4985 &inStream); 4986 LOGV("openInput() openInputStream returned input %p, SamplingRate %d, Format %d, Channels %x, acoustics %x, status %d", 4987 inStream, 4988 samplingRate, 4989 format, 4990 channels, 4991 acoustics, 4992 status); 4993 4994 // If the input could not be opened with the requested parameters and we can handle the conversion internally, 4995 // try to open again with the proposed parameters. The AudioFlinger can resample the input and do mono to stereo 4996 // or stereo to mono conversions on 16 bit PCM inputs. 4997 if (inStream == NULL && status == BAD_VALUE && 4998 reqFormat == format && format == AUDIO_FORMAT_PCM_16_BIT && 4999 (samplingRate <= 2 * reqSamplingRate) && 5000 (popcount(channels) < 3) && (popcount(reqChannels) < 3)) { 5001 LOGV("openInput() reopening with proposed sampling rate and channels"); 5002 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 5003 &channels, &samplingRate, 5004 (audio_in_acoustics_t)acoustics, 5005 &inStream); 5006 } 5007 5008 if (inStream != NULL) { 5009 AudioStreamIn *input = new AudioStreamIn(inHwDev, inStream); 5010 5011 int id = nextUniqueId(); 5012 // Start record thread 5013 // RecorThread require both input and output device indication to forward to audio 5014 // pre processing modules 5015 uint32_t device = (*pDevices) | primaryOutputDevice_l(); 5016 thread = new RecordThread(this, 5017 input, 5018 reqSamplingRate, 5019 reqChannels, 5020 id, 5021 device); 5022 mRecordThreads.add(id, thread); 5023 LOGV("openInput() created record thread: ID %d thread %p", id, thread); 5024 if (pSamplingRate) *pSamplingRate = reqSamplingRate; 5025 if (pFormat) *pFormat = format; 5026 if (pChannels) *pChannels = reqChannels; 5027 5028 input->stream->common.standby(&input->stream->common); 5029 5030 // notify client processes of the new input creation 5031 thread->audioConfigChanged_l(AudioSystem::INPUT_OPENED); 5032 return id; 5033 } 5034 5035 return 0; 5036} 5037 5038status_t AudioFlinger::closeInput(int input) 5039{ 5040 // keep strong reference on the record thread so that 5041 // it is not destroyed while exit() is executed 5042 sp <RecordThread> thread; 5043 { 5044 Mutex::Autolock _l(mLock); 5045 thread = checkRecordThread_l(input); 5046 if (thread == NULL) { 5047 return BAD_VALUE; 5048 } 5049 5050 LOGV("closeInput() %d", input); 5051 void *param2 = 0; 5052 audioConfigChanged_l(AudioSystem::INPUT_CLOSED, input, param2); 5053 mRecordThreads.removeItem(input); 5054 } 5055 thread->exit(); 5056 5057 AudioStreamIn *in = thread->clearInput(); 5058 // from now on thread->mInput is NULL 5059 in->hwDev->close_input_stream(in->hwDev, in->stream); 5060 delete in; 5061 5062 return NO_ERROR; 5063} 5064 5065status_t AudioFlinger::setStreamOutput(uint32_t stream, int output) 5066{ 5067 Mutex::Autolock _l(mLock); 5068 MixerThread *dstThread = checkMixerThread_l(output); 5069 if (dstThread == NULL) { 5070 LOGW("setStreamOutput() bad output id %d", output); 5071 return BAD_VALUE; 5072 } 5073 5074 LOGV("setStreamOutput() stream %d to output %d", stream, output); 5075 audioConfigChanged_l(AudioSystem::STREAM_CONFIG_CHANGED, output, &stream); 5076 5077 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5078 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 5079 if (thread != dstThread && 5080 thread->type() != ThreadBase::DIRECT) { 5081 MixerThread *srcThread = (MixerThread *)thread; 5082 srcThread->invalidateTracks(stream); 5083 } 5084 } 5085 5086 return NO_ERROR; 5087} 5088 5089 5090int AudioFlinger::newAudioSessionId() 5091{ 5092 return nextUniqueId(); 5093} 5094 5095void AudioFlinger::acquireAudioSessionId(int audioSession) 5096{ 5097 Mutex::Autolock _l(mLock); 5098 int caller = IPCThreadState::self()->getCallingPid(); 5099 LOGV("acquiring %d from %d", audioSession, caller); 5100 int num = mAudioSessionRefs.size(); 5101 for (int i = 0; i< num; i++) { 5102 AudioSessionRef *ref = mAudioSessionRefs.editItemAt(i); 5103 if (ref->sessionid == audioSession && ref->pid == caller) { 5104 ref->cnt++; 5105 LOGV(" incremented refcount to %d", ref->cnt); 5106 return; 5107 } 5108 } 5109 AudioSessionRef *ref = new AudioSessionRef(); 5110 ref->sessionid = audioSession; 5111 ref->pid = caller; 5112 ref->cnt = 1; 5113 mAudioSessionRefs.push(ref); 5114 LOGV(" added new entry for %d", ref->sessionid); 5115} 5116 5117void AudioFlinger::releaseAudioSessionId(int audioSession) 5118{ 5119 Mutex::Autolock _l(mLock); 5120 int caller = IPCThreadState::self()->getCallingPid(); 5121 LOGV("releasing %d from %d", audioSession, caller); 5122 int num = mAudioSessionRefs.size(); 5123 for (int i = 0; i< num; i++) { 5124 AudioSessionRef *ref = mAudioSessionRefs.itemAt(i); 5125 if (ref->sessionid == audioSession && ref->pid == caller) { 5126 ref->cnt--; 5127 LOGV(" decremented refcount to %d", ref->cnt); 5128 if (ref->cnt == 0) { 5129 mAudioSessionRefs.removeAt(i); 5130 delete ref; 5131 purgeStaleEffects_l(); 5132 } 5133 return; 5134 } 5135 } 5136 LOGW("session id %d not found for pid %d", audioSession, caller); 5137} 5138 5139void AudioFlinger::purgeStaleEffects_l() { 5140 5141 LOGV("purging stale effects"); 5142 5143 Vector< sp<EffectChain> > chains; 5144 5145 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5146 sp<PlaybackThread> t = mPlaybackThreads.valueAt(i); 5147 for (size_t j = 0; j < t->mEffectChains.size(); j++) { 5148 sp<EffectChain> ec = t->mEffectChains[j]; 5149 if (ec->sessionId() > AUDIO_SESSION_OUTPUT_MIX) { 5150 chains.push(ec); 5151 } 5152 } 5153 } 5154 for (size_t i = 0; i < mRecordThreads.size(); i++) { 5155 sp<RecordThread> t = mRecordThreads.valueAt(i); 5156 for (size_t j = 0; j < t->mEffectChains.size(); j++) { 5157 sp<EffectChain> ec = t->mEffectChains[j]; 5158 chains.push(ec); 5159 } 5160 } 5161 5162 for (size_t i = 0; i < chains.size(); i++) { 5163 sp<EffectChain> ec = chains[i]; 5164 int sessionid = ec->sessionId(); 5165 sp<ThreadBase> t = ec->mThread.promote(); 5166 if (t == 0) { 5167 continue; 5168 } 5169 size_t numsessionrefs = mAudioSessionRefs.size(); 5170 bool found = false; 5171 for (size_t k = 0; k < numsessionrefs; k++) { 5172 AudioSessionRef *ref = mAudioSessionRefs.itemAt(k); 5173 if (ref->sessionid == sessionid) { 5174 LOGV(" session %d still exists for %d with %d refs", 5175 sessionid, ref->pid, ref->cnt); 5176 found = true; 5177 break; 5178 } 5179 } 5180 if (!found) { 5181 // remove all effects from the chain 5182 while (ec->mEffects.size()) { 5183 sp<EffectModule> effect = ec->mEffects[0]; 5184 effect->unPin(); 5185 Mutex::Autolock _l (t->mLock); 5186 t->removeEffect_l(effect); 5187 for (size_t j = 0; j < effect->mHandles.size(); j++) { 5188 sp<EffectHandle> handle = effect->mHandles[j].promote(); 5189 if (handle != 0) { 5190 handle->mEffect.clear(); 5191 } 5192 } 5193 AudioSystem::unregisterEffect(effect->id()); 5194 } 5195 } 5196 } 5197 return; 5198} 5199 5200// checkPlaybackThread_l() must be called with AudioFlinger::mLock held 5201AudioFlinger::PlaybackThread *AudioFlinger::checkPlaybackThread_l(int output) const 5202{ 5203 PlaybackThread *thread = NULL; 5204 if (mPlaybackThreads.indexOfKey(output) >= 0) { 5205 thread = (PlaybackThread *)mPlaybackThreads.valueFor(output).get(); 5206 } 5207 return thread; 5208} 5209 5210// checkMixerThread_l() must be called with AudioFlinger::mLock held 5211AudioFlinger::MixerThread *AudioFlinger::checkMixerThread_l(int output) const 5212{ 5213 PlaybackThread *thread = checkPlaybackThread_l(output); 5214 if (thread != NULL) { 5215 if (thread->type() == ThreadBase::DIRECT) { 5216 thread = NULL; 5217 } 5218 } 5219 return (MixerThread *)thread; 5220} 5221 5222// checkRecordThread_l() must be called with AudioFlinger::mLock held 5223AudioFlinger::RecordThread *AudioFlinger::checkRecordThread_l(int input) const 5224{ 5225 RecordThread *thread = NULL; 5226 if (mRecordThreads.indexOfKey(input) >= 0) { 5227 thread = (RecordThread *)mRecordThreads.valueFor(input).get(); 5228 } 5229 return thread; 5230} 5231 5232uint32_t AudioFlinger::nextUniqueId() 5233{ 5234 return android_atomic_inc(&mNextUniqueId); 5235} 5236 5237AudioFlinger::PlaybackThread *AudioFlinger::primaryPlaybackThread_l() 5238{ 5239 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5240 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 5241 AudioStreamOut *output = thread->getOutput(); 5242 if (output != NULL && output->hwDev == mPrimaryHardwareDev) { 5243 return thread; 5244 } 5245 } 5246 return NULL; 5247} 5248 5249uint32_t AudioFlinger::primaryOutputDevice_l() 5250{ 5251 PlaybackThread *thread = primaryPlaybackThread_l(); 5252 5253 if (thread == NULL) { 5254 return 0; 5255 } 5256 5257 return thread->device(); 5258} 5259 5260 5261// ---------------------------------------------------------------------------- 5262// Effect management 5263// ---------------------------------------------------------------------------- 5264 5265 5266status_t AudioFlinger::queryNumberEffects(uint32_t *numEffects) 5267{ 5268 Mutex::Autolock _l(mLock); 5269 return EffectQueryNumberEffects(numEffects); 5270} 5271 5272status_t AudioFlinger::queryEffect(uint32_t index, effect_descriptor_t *descriptor) 5273{ 5274 Mutex::Autolock _l(mLock); 5275 return EffectQueryEffect(index, descriptor); 5276} 5277 5278status_t AudioFlinger::getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor) 5279{ 5280 Mutex::Autolock _l(mLock); 5281 return EffectGetDescriptor(pUuid, descriptor); 5282} 5283 5284 5285sp<IEffect> AudioFlinger::createEffect(pid_t pid, 5286 effect_descriptor_t *pDesc, 5287 const sp<IEffectClient>& effectClient, 5288 int32_t priority, 5289 int io, 5290 int sessionId, 5291 status_t *status, 5292 int *id, 5293 int *enabled) 5294{ 5295 status_t lStatus = NO_ERROR; 5296 sp<EffectHandle> handle; 5297 effect_descriptor_t desc; 5298 sp<Client> client; 5299 wp<Client> wclient; 5300 5301 LOGV("createEffect pid %d, client %p, priority %d, sessionId %d, io %d", 5302 pid, effectClient.get(), priority, sessionId, io); 5303 5304 if (pDesc == NULL) { 5305 lStatus = BAD_VALUE; 5306 goto Exit; 5307 } 5308 5309 // check audio settings permission for global effects 5310 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && !settingsAllowed()) { 5311 lStatus = PERMISSION_DENIED; 5312 goto Exit; 5313 } 5314 5315 // Session AUDIO_SESSION_OUTPUT_STAGE is reserved for output stage effects 5316 // that can only be created by audio policy manager (running in same process) 5317 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE && getpid() != pid) { 5318 lStatus = PERMISSION_DENIED; 5319 goto Exit; 5320 } 5321 5322 if (io == 0) { 5323 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE) { 5324 // output must be specified by AudioPolicyManager when using session 5325 // AUDIO_SESSION_OUTPUT_STAGE 5326 lStatus = BAD_VALUE; 5327 goto Exit; 5328 } else if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 5329 // if the output returned by getOutputForEffect() is removed before we lock the 5330 // mutex below, the call to checkPlaybackThread_l(io) below will detect it 5331 // and we will exit safely 5332 io = AudioSystem::getOutputForEffect(&desc); 5333 } 5334 } 5335 5336 { 5337 Mutex::Autolock _l(mLock); 5338 5339 5340 if (!EffectIsNullUuid(&pDesc->uuid)) { 5341 // if uuid is specified, request effect descriptor 5342 lStatus = EffectGetDescriptor(&pDesc->uuid, &desc); 5343 if (lStatus < 0) { 5344 LOGW("createEffect() error %d from EffectGetDescriptor", lStatus); 5345 goto Exit; 5346 } 5347 } else { 5348 // if uuid is not specified, look for an available implementation 5349 // of the required type in effect factory 5350 if (EffectIsNullUuid(&pDesc->type)) { 5351 LOGW("createEffect() no effect type"); 5352 lStatus = BAD_VALUE; 5353 goto Exit; 5354 } 5355 uint32_t numEffects = 0; 5356 effect_descriptor_t d; 5357 d.flags = 0; // prevent compiler warning 5358 bool found = false; 5359 5360 lStatus = EffectQueryNumberEffects(&numEffects); 5361 if (lStatus < 0) { 5362 LOGW("createEffect() error %d from EffectQueryNumberEffects", lStatus); 5363 goto Exit; 5364 } 5365 for (uint32_t i = 0; i < numEffects; i++) { 5366 lStatus = EffectQueryEffect(i, &desc); 5367 if (lStatus < 0) { 5368 LOGW("createEffect() error %d from EffectQueryEffect", lStatus); 5369 continue; 5370 } 5371 if (memcmp(&desc.type, &pDesc->type, sizeof(effect_uuid_t)) == 0) { 5372 // If matching type found save effect descriptor. If the session is 5373 // 0 and the effect is not auxiliary, continue enumeration in case 5374 // an auxiliary version of this effect type is available 5375 found = true; 5376 memcpy(&d, &desc, sizeof(effect_descriptor_t)); 5377 if (sessionId != AUDIO_SESSION_OUTPUT_MIX || 5378 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5379 break; 5380 } 5381 } 5382 } 5383 if (!found) { 5384 lStatus = BAD_VALUE; 5385 LOGW("createEffect() effect not found"); 5386 goto Exit; 5387 } 5388 // For same effect type, chose auxiliary version over insert version if 5389 // connect to output mix (Compliance to OpenSL ES) 5390 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && 5391 (d.flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_AUXILIARY) { 5392 memcpy(&desc, &d, sizeof(effect_descriptor_t)); 5393 } 5394 } 5395 5396 // Do not allow auxiliary effects on a session different from 0 (output mix) 5397 if (sessionId != AUDIO_SESSION_OUTPUT_MIX && 5398 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5399 lStatus = INVALID_OPERATION; 5400 goto Exit; 5401 } 5402 5403 // check recording permission for visualizer 5404 if ((memcmp(&desc.type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0) && 5405 !recordingAllowed()) { 5406 lStatus = PERMISSION_DENIED; 5407 goto Exit; 5408 } 5409 5410 // return effect descriptor 5411 memcpy(pDesc, &desc, sizeof(effect_descriptor_t)); 5412 5413 // If output is not specified try to find a matching audio session ID in one of the 5414 // output threads. 5415 // If output is 0 here, sessionId is neither SESSION_OUTPUT_STAGE nor SESSION_OUTPUT_MIX 5416 // because of code checking output when entering the function. 5417 // Note: io is never 0 when creating an effect on an input 5418 if (io == 0) { 5419 // look for the thread where the specified audio session is present 5420 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5421 if (mPlaybackThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 5422 io = mPlaybackThreads.keyAt(i); 5423 break; 5424 } 5425 } 5426 if (io == 0) { 5427 for (size_t i = 0; i < mRecordThreads.size(); i++) { 5428 if (mRecordThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 5429 io = mRecordThreads.keyAt(i); 5430 break; 5431 } 5432 } 5433 } 5434 // If no output thread contains the requested session ID, default to 5435 // first output. The effect chain will be moved to the correct output 5436 // thread when a track with the same session ID is created 5437 if (io == 0 && mPlaybackThreads.size()) { 5438 io = mPlaybackThreads.keyAt(0); 5439 } 5440 LOGV("createEffect() got io %d for effect %s", io, desc.name); 5441 } 5442 ThreadBase *thread = checkRecordThread_l(io); 5443 if (thread == NULL) { 5444 thread = checkPlaybackThread_l(io); 5445 if (thread == NULL) { 5446 LOGE("createEffect() unknown output thread"); 5447 lStatus = BAD_VALUE; 5448 goto Exit; 5449 } 5450 } 5451 5452 wclient = mClients.valueFor(pid); 5453 5454 if (wclient != NULL) { 5455 client = wclient.promote(); 5456 } else { 5457 client = new Client(this, pid); 5458 mClients.add(pid, client); 5459 } 5460 5461 // create effect on selected output thread 5462 handle = thread->createEffect_l(client, effectClient, priority, sessionId, 5463 &desc, enabled, &lStatus); 5464 if (handle != 0 && id != NULL) { 5465 *id = handle->id(); 5466 } 5467 } 5468 5469Exit: 5470 if(status) { 5471 *status = lStatus; 5472 } 5473 return handle; 5474} 5475 5476status_t AudioFlinger::moveEffects(int sessionId, int srcOutput, int dstOutput) 5477{ 5478 LOGV("moveEffects() session %d, srcOutput %d, dstOutput %d", 5479 sessionId, srcOutput, dstOutput); 5480 Mutex::Autolock _l(mLock); 5481 if (srcOutput == dstOutput) { 5482 LOGW("moveEffects() same dst and src outputs %d", dstOutput); 5483 return NO_ERROR; 5484 } 5485 PlaybackThread *srcThread = checkPlaybackThread_l(srcOutput); 5486 if (srcThread == NULL) { 5487 LOGW("moveEffects() bad srcOutput %d", srcOutput); 5488 return BAD_VALUE; 5489 } 5490 PlaybackThread *dstThread = checkPlaybackThread_l(dstOutput); 5491 if (dstThread == NULL) { 5492 LOGW("moveEffects() bad dstOutput %d", dstOutput); 5493 return BAD_VALUE; 5494 } 5495 5496 Mutex::Autolock _dl(dstThread->mLock); 5497 Mutex::Autolock _sl(srcThread->mLock); 5498 moveEffectChain_l(sessionId, srcThread, dstThread, false); 5499 5500 return NO_ERROR; 5501} 5502 5503// moveEffectChain_l must be called with both srcThread and dstThread mLocks held 5504status_t AudioFlinger::moveEffectChain_l(int sessionId, 5505 AudioFlinger::PlaybackThread *srcThread, 5506 AudioFlinger::PlaybackThread *dstThread, 5507 bool reRegister) 5508{ 5509 LOGV("moveEffectChain_l() session %d from thread %p to thread %p", 5510 sessionId, srcThread, dstThread); 5511 5512 sp<EffectChain> chain = srcThread->getEffectChain_l(sessionId); 5513 if (chain == 0) { 5514 LOGW("moveEffectChain_l() effect chain for session %d not on source thread %p", 5515 sessionId, srcThread); 5516 return INVALID_OPERATION; 5517 } 5518 5519 // remove chain first. This is useful only if reconfiguring effect chain on same output thread, 5520 // so that a new chain is created with correct parameters when first effect is added. This is 5521 // otherwise unecessary as removeEffect_l() will remove the chain when last effect is 5522 // removed. 5523 srcThread->removeEffectChain_l(chain); 5524 5525 // transfer all effects one by one so that new effect chain is created on new thread with 5526 // correct buffer sizes and audio parameters and effect engines reconfigured accordingly 5527 int dstOutput = dstThread->id(); 5528 sp<EffectChain> dstChain; 5529 uint32_t strategy = 0; // prevent compiler warning 5530 sp<EffectModule> effect = chain->getEffectFromId_l(0); 5531 while (effect != 0) { 5532 srcThread->removeEffect_l(effect); 5533 dstThread->addEffect_l(effect); 5534 // if the move request is not received from audio policy manager, the effect must be 5535 // re-registered with the new strategy and output 5536 if (dstChain == 0) { 5537 dstChain = effect->chain().promote(); 5538 if (dstChain == 0) { 5539 LOGW("moveEffectChain_l() cannot get chain from effect %p", effect.get()); 5540 srcThread->addEffect_l(effect); 5541 return NO_INIT; 5542 } 5543 strategy = dstChain->strategy(); 5544 } 5545 if (reRegister) { 5546 AudioSystem::unregisterEffect(effect->id()); 5547 AudioSystem::registerEffect(&effect->desc(), 5548 dstOutput, 5549 strategy, 5550 sessionId, 5551 effect->id()); 5552 } 5553 effect = chain->getEffectFromId_l(0); 5554 } 5555 5556 return NO_ERROR; 5557} 5558 5559 5560// PlaybackThread::createEffect_l() must be called with AudioFlinger::mLock held 5561sp<AudioFlinger::EffectHandle> AudioFlinger::ThreadBase::createEffect_l( 5562 const sp<AudioFlinger::Client>& client, 5563 const sp<IEffectClient>& effectClient, 5564 int32_t priority, 5565 int sessionId, 5566 effect_descriptor_t *desc, 5567 int *enabled, 5568 status_t *status 5569 ) 5570{ 5571 sp<EffectModule> effect; 5572 sp<EffectHandle> handle; 5573 status_t lStatus; 5574 sp<EffectChain> chain; 5575 bool chainCreated = false; 5576 bool effectCreated = false; 5577 bool effectRegistered = false; 5578 5579 lStatus = initCheck(); 5580 if (lStatus != NO_ERROR) { 5581 LOGW("createEffect_l() Audio driver not initialized."); 5582 goto Exit; 5583 } 5584 5585 // Do not allow effects with session ID 0 on direct output or duplicating threads 5586 // TODO: add rule for hw accelerated effects on direct outputs with non PCM format 5587 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && mType != MIXER) { 5588 LOGW("createEffect_l() Cannot add auxiliary effect %s to session %d", 5589 desc->name, sessionId); 5590 lStatus = BAD_VALUE; 5591 goto Exit; 5592 } 5593 // Only Pre processor effects are allowed on input threads and only on input threads 5594 if ((mType == RECORD && 5595 (desc->flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_PRE_PROC) || 5596 (mType != RECORD && 5597 (desc->flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC)) { 5598 LOGW("createEffect_l() effect %s (flags %08x) created on wrong thread type %d", 5599 desc->name, desc->flags, mType); 5600 lStatus = BAD_VALUE; 5601 goto Exit; 5602 } 5603 5604 LOGV("createEffect_l() thread %p effect %s on session %d", this, desc->name, sessionId); 5605 5606 { // scope for mLock 5607 Mutex::Autolock _l(mLock); 5608 5609 // check for existing effect chain with the requested audio session 5610 chain = getEffectChain_l(sessionId); 5611 if (chain == 0) { 5612 // create a new chain for this session 5613 LOGV("createEffect_l() new effect chain for session %d", sessionId); 5614 chain = new EffectChain(this, sessionId); 5615 addEffectChain_l(chain); 5616 chain->setStrategy(getStrategyForSession_l(sessionId)); 5617 chainCreated = true; 5618 } else { 5619 effect = chain->getEffectFromDesc_l(desc); 5620 } 5621 5622 LOGV("createEffect_l() got effect %p on chain %p", effect == 0 ? 0 : effect.get(), chain.get()); 5623 5624 if (effect == 0) { 5625 int id = mAudioFlinger->nextUniqueId(); 5626 // Check CPU and memory usage 5627 lStatus = AudioSystem::registerEffect(desc, mId, chain->strategy(), sessionId, id); 5628 if (lStatus != NO_ERROR) { 5629 goto Exit; 5630 } 5631 effectRegistered = true; 5632 // create a new effect module if none present in the chain 5633 effect = new EffectModule(this, chain, desc, id, sessionId); 5634 lStatus = effect->status(); 5635 if (lStatus != NO_ERROR) { 5636 goto Exit; 5637 } 5638 lStatus = chain->addEffect_l(effect); 5639 if (lStatus != NO_ERROR) { 5640 goto Exit; 5641 } 5642 effectCreated = true; 5643 5644 effect->setDevice(mDevice); 5645 effect->setMode(mAudioFlinger->getMode()); 5646 } 5647 // create effect handle and connect it to effect module 5648 handle = new EffectHandle(effect, client, effectClient, priority); 5649 lStatus = effect->addHandle(handle); 5650 if (enabled) { 5651 *enabled = (int)effect->isEnabled(); 5652 } 5653 } 5654 5655Exit: 5656 if (lStatus != NO_ERROR && lStatus != ALREADY_EXISTS) { 5657 Mutex::Autolock _l(mLock); 5658 if (effectCreated) { 5659 chain->removeEffect_l(effect); 5660 } 5661 if (effectRegistered) { 5662 AudioSystem::unregisterEffect(effect->id()); 5663 } 5664 if (chainCreated) { 5665 removeEffectChain_l(chain); 5666 } 5667 handle.clear(); 5668 } 5669 5670 if(status) { 5671 *status = lStatus; 5672 } 5673 return handle; 5674} 5675 5676sp<AudioFlinger::EffectModule> AudioFlinger::ThreadBase::getEffect_l(int sessionId, int effectId) 5677{ 5678 sp<EffectModule> effect; 5679 5680 sp<EffectChain> chain = getEffectChain_l(sessionId); 5681 if (chain != 0) { 5682 effect = chain->getEffectFromId_l(effectId); 5683 } 5684 return effect; 5685} 5686 5687// PlaybackThread::addEffect_l() must be called with AudioFlinger::mLock and 5688// PlaybackThread::mLock held 5689status_t AudioFlinger::ThreadBase::addEffect_l(const sp<EffectModule>& effect) 5690{ 5691 // check for existing effect chain with the requested audio session 5692 int sessionId = effect->sessionId(); 5693 sp<EffectChain> chain = getEffectChain_l(sessionId); 5694 bool chainCreated = false; 5695 5696 if (chain == 0) { 5697 // create a new chain for this session 5698 LOGV("addEffect_l() new effect chain for session %d", sessionId); 5699 chain = new EffectChain(this, sessionId); 5700 addEffectChain_l(chain); 5701 chain->setStrategy(getStrategyForSession_l(sessionId)); 5702 chainCreated = true; 5703 } 5704 LOGV("addEffect_l() %p chain %p effect %p", this, chain.get(), effect.get()); 5705 5706 if (chain->getEffectFromId_l(effect->id()) != 0) { 5707 LOGW("addEffect_l() %p effect %s already present in chain %p", 5708 this, effect->desc().name, chain.get()); 5709 return BAD_VALUE; 5710 } 5711 5712 status_t status = chain->addEffect_l(effect); 5713 if (status != NO_ERROR) { 5714 if (chainCreated) { 5715 removeEffectChain_l(chain); 5716 } 5717 return status; 5718 } 5719 5720 effect->setDevice(mDevice); 5721 effect->setMode(mAudioFlinger->getMode()); 5722 return NO_ERROR; 5723} 5724 5725void AudioFlinger::ThreadBase::removeEffect_l(const sp<EffectModule>& effect) { 5726 5727 LOGV("removeEffect_l() %p effect %p", this, effect.get()); 5728 effect_descriptor_t desc = effect->desc(); 5729 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5730 detachAuxEffect_l(effect->id()); 5731 } 5732 5733 sp<EffectChain> chain = effect->chain().promote(); 5734 if (chain != 0) { 5735 // remove effect chain if removing last effect 5736 if (chain->removeEffect_l(effect) == 0) { 5737 removeEffectChain_l(chain); 5738 } 5739 } else { 5740 LOGW("removeEffect_l() %p cannot promote chain for effect %p", this, effect.get()); 5741 } 5742} 5743 5744void AudioFlinger::ThreadBase::lockEffectChains_l( 5745 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5746{ 5747 effectChains = mEffectChains; 5748 for (size_t i = 0; i < mEffectChains.size(); i++) { 5749 mEffectChains[i]->lock(); 5750 } 5751} 5752 5753void AudioFlinger::ThreadBase::unlockEffectChains( 5754 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5755{ 5756 for (size_t i = 0; i < effectChains.size(); i++) { 5757 effectChains[i]->unlock(); 5758 } 5759} 5760 5761sp<AudioFlinger::EffectChain> AudioFlinger::ThreadBase::getEffectChain(int sessionId) 5762{ 5763 Mutex::Autolock _l(mLock); 5764 return getEffectChain_l(sessionId); 5765} 5766 5767sp<AudioFlinger::EffectChain> AudioFlinger::ThreadBase::getEffectChain_l(int sessionId) 5768{ 5769 sp<EffectChain> chain; 5770 5771 size_t size = mEffectChains.size(); 5772 for (size_t i = 0; i < size; i++) { 5773 if (mEffectChains[i]->sessionId() == sessionId) { 5774 chain = mEffectChains[i]; 5775 break; 5776 } 5777 } 5778 return chain; 5779} 5780 5781void AudioFlinger::ThreadBase::setMode(uint32_t mode) 5782{ 5783 Mutex::Autolock _l(mLock); 5784 size_t size = mEffectChains.size(); 5785 for (size_t i = 0; i < size; i++) { 5786 mEffectChains[i]->setMode_l(mode); 5787 } 5788} 5789 5790void AudioFlinger::ThreadBase::disconnectEffect(const sp<EffectModule>& effect, 5791 const wp<EffectHandle>& handle, 5792 bool unpiniflast) { 5793 5794 Mutex::Autolock _l(mLock); 5795 LOGV("disconnectEffect() %p effect %p", this, effect.get()); 5796 // delete the effect module if removing last handle on it 5797 if (effect->removeHandle(handle) == 0) { 5798 if (!effect->isPinned() || unpiniflast) { 5799 removeEffect_l(effect); 5800 AudioSystem::unregisterEffect(effect->id()); 5801 } 5802 } 5803} 5804 5805status_t AudioFlinger::PlaybackThread::addEffectChain_l(const sp<EffectChain>& chain) 5806{ 5807 int session = chain->sessionId(); 5808 int16_t *buffer = mMixBuffer; 5809 bool ownsBuffer = false; 5810 5811 LOGV("addEffectChain_l() %p on thread %p for session %d", chain.get(), this, session); 5812 if (session > 0) { 5813 // Only one effect chain can be present in direct output thread and it uses 5814 // the mix buffer as input 5815 if (mType != DIRECT) { 5816 size_t numSamples = mFrameCount * mChannelCount; 5817 buffer = new int16_t[numSamples]; 5818 memset(buffer, 0, numSamples * sizeof(int16_t)); 5819 LOGV("addEffectChain_l() creating new input buffer %p session %d", buffer, session); 5820 ownsBuffer = true; 5821 } 5822 5823 // Attach all tracks with same session ID to this chain. 5824 for (size_t i = 0; i < mTracks.size(); ++i) { 5825 sp<Track> track = mTracks[i]; 5826 if (session == track->sessionId()) { 5827 LOGV("addEffectChain_l() track->setMainBuffer track %p buffer %p", track.get(), buffer); 5828 track->setMainBuffer(buffer); 5829 chain->incTrackCnt(); 5830 } 5831 } 5832 5833 // indicate all active tracks in the chain 5834 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5835 sp<Track> track = mActiveTracks[i].promote(); 5836 if (track == 0) continue; 5837 if (session == track->sessionId()) { 5838 LOGV("addEffectChain_l() activating track %p on session %d", track.get(), session); 5839 chain->incActiveTrackCnt(); 5840 } 5841 } 5842 } 5843 5844 chain->setInBuffer(buffer, ownsBuffer); 5845 chain->setOutBuffer(mMixBuffer); 5846 // Effect chain for session AUDIO_SESSION_OUTPUT_STAGE is inserted at end of effect 5847 // chains list in order to be processed last as it contains output stage effects 5848 // Effect chain for session AUDIO_SESSION_OUTPUT_MIX is inserted before 5849 // session AUDIO_SESSION_OUTPUT_STAGE to be processed 5850 // after track specific effects and before output stage 5851 // It is therefore mandatory that AUDIO_SESSION_OUTPUT_MIX == 0 and 5852 // that AUDIO_SESSION_OUTPUT_STAGE < AUDIO_SESSION_OUTPUT_MIX 5853 // Effect chain for other sessions are inserted at beginning of effect 5854 // chains list to be processed before output mix effects. Relative order between other 5855 // sessions is not important 5856 size_t size = mEffectChains.size(); 5857 size_t i = 0; 5858 for (i = 0; i < size; i++) { 5859 if (mEffectChains[i]->sessionId() < session) break; 5860 } 5861 mEffectChains.insertAt(chain, i); 5862 checkSuspendOnAddEffectChain_l(chain); 5863 5864 return NO_ERROR; 5865} 5866 5867size_t AudioFlinger::PlaybackThread::removeEffectChain_l(const sp<EffectChain>& chain) 5868{ 5869 int session = chain->sessionId(); 5870 5871 LOGV("removeEffectChain_l() %p from thread %p for session %d", chain.get(), this, session); 5872 5873 for (size_t i = 0; i < mEffectChains.size(); i++) { 5874 if (chain == mEffectChains[i]) { 5875 mEffectChains.removeAt(i); 5876 // detach all active tracks from the chain 5877 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5878 sp<Track> track = mActiveTracks[i].promote(); 5879 if (track == 0) continue; 5880 if (session == track->sessionId()) { 5881 LOGV("removeEffectChain_l(): stopping track on chain %p for session Id: %d", 5882 chain.get(), session); 5883 chain->decActiveTrackCnt(); 5884 } 5885 } 5886 5887 // detach all tracks with same session ID from this chain 5888 for (size_t i = 0; i < mTracks.size(); ++i) { 5889 sp<Track> track = mTracks[i]; 5890 if (session == track->sessionId()) { 5891 track->setMainBuffer(mMixBuffer); 5892 chain->decTrackCnt(); 5893 } 5894 } 5895 break; 5896 } 5897 } 5898 return mEffectChains.size(); 5899} 5900 5901status_t AudioFlinger::PlaybackThread::attachAuxEffect( 5902 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5903{ 5904 Mutex::Autolock _l(mLock); 5905 return attachAuxEffect_l(track, EffectId); 5906} 5907 5908status_t AudioFlinger::PlaybackThread::attachAuxEffect_l( 5909 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5910{ 5911 status_t status = NO_ERROR; 5912 5913 if (EffectId == 0) { 5914 track->setAuxBuffer(0, NULL); 5915 } else { 5916 // Auxiliary effects are always in audio session AUDIO_SESSION_OUTPUT_MIX 5917 sp<EffectModule> effect = getEffect_l(AUDIO_SESSION_OUTPUT_MIX, EffectId); 5918 if (effect != 0) { 5919 if ((effect->desc().flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5920 track->setAuxBuffer(EffectId, (int32_t *)effect->inBuffer()); 5921 } else { 5922 status = INVALID_OPERATION; 5923 } 5924 } else { 5925 status = BAD_VALUE; 5926 } 5927 } 5928 return status; 5929} 5930 5931void AudioFlinger::PlaybackThread::detachAuxEffect_l(int effectId) 5932{ 5933 for (size_t i = 0; i < mTracks.size(); ++i) { 5934 sp<Track> track = mTracks[i]; 5935 if (track->auxEffectId() == effectId) { 5936 attachAuxEffect_l(track, 0); 5937 } 5938 } 5939} 5940 5941status_t AudioFlinger::RecordThread::addEffectChain_l(const sp<EffectChain>& chain) 5942{ 5943 // only one chain per input thread 5944 if (mEffectChains.size() != 0) { 5945 return INVALID_OPERATION; 5946 } 5947 LOGV("addEffectChain_l() %p on thread %p", chain.get(), this); 5948 5949 chain->setInBuffer(NULL); 5950 chain->setOutBuffer(NULL); 5951 5952 checkSuspendOnAddEffectChain_l(chain); 5953 5954 mEffectChains.add(chain); 5955 5956 return NO_ERROR; 5957} 5958 5959size_t AudioFlinger::RecordThread::removeEffectChain_l(const sp<EffectChain>& chain) 5960{ 5961 LOGV("removeEffectChain_l() %p from thread %p", chain.get(), this); 5962 LOGW_IF(mEffectChains.size() != 1, 5963 "removeEffectChain_l() %p invalid chain size %d on thread %p", 5964 chain.get(), mEffectChains.size(), this); 5965 if (mEffectChains.size() == 1) { 5966 mEffectChains.removeAt(0); 5967 } 5968 return 0; 5969} 5970 5971// ---------------------------------------------------------------------------- 5972// EffectModule implementation 5973// ---------------------------------------------------------------------------- 5974 5975#undef LOG_TAG 5976#define LOG_TAG "AudioFlinger::EffectModule" 5977 5978AudioFlinger::EffectModule::EffectModule(const wp<ThreadBase>& wThread, 5979 const wp<AudioFlinger::EffectChain>& chain, 5980 effect_descriptor_t *desc, 5981 int id, 5982 int sessionId) 5983 : mThread(wThread), mChain(chain), mId(id), mSessionId(sessionId), mEffectInterface(NULL), 5984 mStatus(NO_INIT), mState(IDLE), mSuspended(false) 5985{ 5986 LOGV("Constructor %p", this); 5987 int lStatus; 5988 sp<ThreadBase> thread = mThread.promote(); 5989 if (thread == 0) { 5990 return; 5991 } 5992 5993 memcpy(&mDescriptor, desc, sizeof(effect_descriptor_t)); 5994 5995 // create effect engine from effect factory 5996 mStatus = EffectCreate(&desc->uuid, sessionId, thread->id(), &mEffectInterface); 5997 5998 if (mStatus != NO_ERROR) { 5999 return; 6000 } 6001 lStatus = init(); 6002 if (lStatus < 0) { 6003 mStatus = lStatus; 6004 goto Error; 6005 } 6006 6007 if (mSessionId > AUDIO_SESSION_OUTPUT_MIX) { 6008 mPinned = true; 6009 } 6010 LOGV("Constructor success name %s, Interface %p", mDescriptor.name, mEffectInterface); 6011 return; 6012Error: 6013 EffectRelease(mEffectInterface); 6014 mEffectInterface = NULL; 6015 LOGV("Constructor Error %d", mStatus); 6016} 6017 6018AudioFlinger::EffectModule::~EffectModule() 6019{ 6020 LOGV("Destructor %p", this); 6021 if (mEffectInterface != NULL) { 6022 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 6023 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC) { 6024 sp<ThreadBase> thread = mThread.promote(); 6025 if (thread != 0) { 6026 audio_stream_t *stream = thread->stream(); 6027 if (stream != NULL) { 6028 stream->remove_audio_effect(stream, mEffectInterface); 6029 } 6030 } 6031 } 6032 // release effect engine 6033 EffectRelease(mEffectInterface); 6034 } 6035} 6036 6037status_t AudioFlinger::EffectModule::addHandle(sp<EffectHandle>& handle) 6038{ 6039 status_t status; 6040 6041 Mutex::Autolock _l(mLock); 6042 // First handle in mHandles has highest priority and controls the effect module 6043 int priority = handle->priority(); 6044 size_t size = mHandles.size(); 6045 sp<EffectHandle> h; 6046 size_t i; 6047 for (i = 0; i < size; i++) { 6048 h = mHandles[i].promote(); 6049 if (h == 0) continue; 6050 if (h->priority() <= priority) break; 6051 } 6052 // if inserted in first place, move effect control from previous owner to this handle 6053 if (i == 0) { 6054 bool enabled = false; 6055 if (h != 0) { 6056 enabled = h->enabled(); 6057 h->setControl(false/*hasControl*/, true /*signal*/, enabled /*enabled*/); 6058 } 6059 handle->setControl(true /*hasControl*/, false /*signal*/, enabled /*enabled*/); 6060 status = NO_ERROR; 6061 } else { 6062 status = ALREADY_EXISTS; 6063 } 6064 LOGV("addHandle() %p added handle %p in position %d", this, handle.get(), i); 6065 mHandles.insertAt(handle, i); 6066 return status; 6067} 6068 6069size_t AudioFlinger::EffectModule::removeHandle(const wp<EffectHandle>& handle) 6070{ 6071 Mutex::Autolock _l(mLock); 6072 size_t size = mHandles.size(); 6073 size_t i; 6074 for (i = 0; i < size; i++) { 6075 if (mHandles[i] == handle) break; 6076 } 6077 if (i == size) { 6078 return size; 6079 } 6080 LOGV("removeHandle() %p removed handle %p in position %d", this, handle.unsafe_get(), i); 6081 6082 bool enabled = false; 6083 EffectHandle *hdl = handle.unsafe_get(); 6084 if (hdl) { 6085 LOGV("removeHandle() unsafe_get OK"); 6086 enabled = hdl->enabled(); 6087 } 6088 mHandles.removeAt(i); 6089 size = mHandles.size(); 6090 // if removed from first place, move effect control from this handle to next in line 6091 if (i == 0 && size != 0) { 6092 sp<EffectHandle> h = mHandles[0].promote(); 6093 if (h != 0) { 6094 h->setControl(true /*hasControl*/, true /*signal*/ , enabled /*enabled*/); 6095 } 6096 } 6097 6098 // Prevent calls to process() and other functions on effect interface from now on. 6099 // The effect engine will be released by the destructor when the last strong reference on 6100 // this object is released which can happen after next process is called. 6101 if (size == 0 && !mPinned) { 6102 mState = DESTROYED; 6103 } 6104 6105 return size; 6106} 6107 6108sp<AudioFlinger::EffectHandle> AudioFlinger::EffectModule::controlHandle() 6109{ 6110 Mutex::Autolock _l(mLock); 6111 sp<EffectHandle> handle; 6112 if (mHandles.size() != 0) { 6113 handle = mHandles[0].promote(); 6114 } 6115 return handle; 6116} 6117 6118void AudioFlinger::EffectModule::disconnect(const wp<EffectHandle>& handle, bool unpiniflast) 6119{ 6120 LOGV("disconnect() %p handle %p ", this, handle.unsafe_get()); 6121 // keep a strong reference on this EffectModule to avoid calling the 6122 // destructor before we exit 6123 sp<EffectModule> keep(this); 6124 { 6125 sp<ThreadBase> thread = mThread.promote(); 6126 if (thread != 0) { 6127 thread->disconnectEffect(keep, handle, unpiniflast); 6128 } 6129 } 6130} 6131 6132void AudioFlinger::EffectModule::updateState() { 6133 Mutex::Autolock _l(mLock); 6134 6135 switch (mState) { 6136 case RESTART: 6137 reset_l(); 6138 // FALL THROUGH 6139 6140 case STARTING: 6141 // clear auxiliary effect input buffer for next accumulation 6142 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6143 memset(mConfig.inputCfg.buffer.raw, 6144 0, 6145 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 6146 } 6147 start_l(); 6148 mState = ACTIVE; 6149 break; 6150 case STOPPING: 6151 stop_l(); 6152 mDisableWaitCnt = mMaxDisableWaitCnt; 6153 mState = STOPPED; 6154 break; 6155 case STOPPED: 6156 // mDisableWaitCnt is forced to 1 by process() when the engine indicates the end of the 6157 // turn off sequence. 6158 if (--mDisableWaitCnt == 0) { 6159 reset_l(); 6160 mState = IDLE; 6161 } 6162 break; 6163 default: //IDLE , ACTIVE, DESTROYED 6164 break; 6165 } 6166} 6167 6168void AudioFlinger::EffectModule::process() 6169{ 6170 Mutex::Autolock _l(mLock); 6171 6172 if (mState == DESTROYED || mEffectInterface == NULL || 6173 mConfig.inputCfg.buffer.raw == NULL || 6174 mConfig.outputCfg.buffer.raw == NULL) { 6175 return; 6176 } 6177 6178 if (isProcessEnabled()) { 6179 // do 32 bit to 16 bit conversion for auxiliary effect input buffer 6180 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6181 AudioMixer::ditherAndClamp(mConfig.inputCfg.buffer.s32, 6182 mConfig.inputCfg.buffer.s32, 6183 mConfig.inputCfg.buffer.frameCount/2); 6184 } 6185 6186 // do the actual processing in the effect engine 6187 int ret = (*mEffectInterface)->process(mEffectInterface, 6188 &mConfig.inputCfg.buffer, 6189 &mConfig.outputCfg.buffer); 6190 6191 // force transition to IDLE state when engine is ready 6192 if (mState == STOPPED && ret == -ENODATA) { 6193 mDisableWaitCnt = 1; 6194 } 6195 6196 // clear auxiliary effect input buffer for next accumulation 6197 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6198 memset(mConfig.inputCfg.buffer.raw, 0, 6199 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 6200 } 6201 } else if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_INSERT && 6202 mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 6203 // If an insert effect is idle and input buffer is different from output buffer, 6204 // accumulate input onto output 6205 sp<EffectChain> chain = mChain.promote(); 6206 if (chain != 0 && chain->activeTrackCnt() != 0) { 6207 size_t frameCnt = mConfig.inputCfg.buffer.frameCount * 2; //always stereo here 6208 int16_t *in = mConfig.inputCfg.buffer.s16; 6209 int16_t *out = mConfig.outputCfg.buffer.s16; 6210 for (size_t i = 0; i < frameCnt; i++) { 6211 out[i] = clamp16((int32_t)out[i] + (int32_t)in[i]); 6212 } 6213 } 6214 } 6215} 6216 6217void AudioFlinger::EffectModule::reset_l() 6218{ 6219 if (mEffectInterface == NULL) { 6220 return; 6221 } 6222 (*mEffectInterface)->command(mEffectInterface, EFFECT_CMD_RESET, 0, NULL, 0, NULL); 6223} 6224 6225status_t AudioFlinger::EffectModule::configure() 6226{ 6227 uint32_t channels; 6228 if (mEffectInterface == NULL) { 6229 return NO_INIT; 6230 } 6231 6232 sp<ThreadBase> thread = mThread.promote(); 6233 if (thread == 0) { 6234 return DEAD_OBJECT; 6235 } 6236 6237 // TODO: handle configuration of effects replacing track process 6238 if (thread->channelCount() == 1) { 6239 channels = AUDIO_CHANNEL_OUT_MONO; 6240 } else { 6241 channels = AUDIO_CHANNEL_OUT_STEREO; 6242 } 6243 6244 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6245 mConfig.inputCfg.channels = AUDIO_CHANNEL_OUT_MONO; 6246 } else { 6247 mConfig.inputCfg.channels = channels; 6248 } 6249 mConfig.outputCfg.channels = channels; 6250 mConfig.inputCfg.format = AUDIO_FORMAT_PCM_16_BIT; 6251 mConfig.outputCfg.format = AUDIO_FORMAT_PCM_16_BIT; 6252 mConfig.inputCfg.samplingRate = thread->sampleRate(); 6253 mConfig.outputCfg.samplingRate = mConfig.inputCfg.samplingRate; 6254 mConfig.inputCfg.bufferProvider.cookie = NULL; 6255 mConfig.inputCfg.bufferProvider.getBuffer = NULL; 6256 mConfig.inputCfg.bufferProvider.releaseBuffer = NULL; 6257 mConfig.outputCfg.bufferProvider.cookie = NULL; 6258 mConfig.outputCfg.bufferProvider.getBuffer = NULL; 6259 mConfig.outputCfg.bufferProvider.releaseBuffer = NULL; 6260 mConfig.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ; 6261 // Insert effect: 6262 // - in session AUDIO_SESSION_OUTPUT_MIX or AUDIO_SESSION_OUTPUT_STAGE, 6263 // always overwrites output buffer: input buffer == output buffer 6264 // - in other sessions: 6265 // last effect in the chain accumulates in output buffer: input buffer != output buffer 6266 // other effect: overwrites output buffer: input buffer == output buffer 6267 // Auxiliary effect: 6268 // accumulates in output buffer: input buffer != output buffer 6269 // Therefore: accumulate <=> input buffer != output buffer 6270 if (mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 6271 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE; 6272 } else { 6273 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_WRITE; 6274 } 6275 mConfig.inputCfg.mask = EFFECT_CONFIG_ALL; 6276 mConfig.outputCfg.mask = EFFECT_CONFIG_ALL; 6277 mConfig.inputCfg.buffer.frameCount = thread->frameCount(); 6278 mConfig.outputCfg.buffer.frameCount = mConfig.inputCfg.buffer.frameCount; 6279 6280 LOGV("configure() %p thread %p buffer %p framecount %d", 6281 this, thread.get(), mConfig.inputCfg.buffer.raw, mConfig.inputCfg.buffer.frameCount); 6282 6283 status_t cmdStatus; 6284 uint32_t size = sizeof(int); 6285 status_t status = (*mEffectInterface)->command(mEffectInterface, 6286 EFFECT_CMD_CONFIGURE, 6287 sizeof(effect_config_t), 6288 &mConfig, 6289 &size, 6290 &cmdStatus); 6291 if (status == 0) { 6292 status = cmdStatus; 6293 } 6294 6295 mMaxDisableWaitCnt = (MAX_DISABLE_TIME_MS * mConfig.outputCfg.samplingRate) / 6296 (1000 * mConfig.outputCfg.buffer.frameCount); 6297 6298 return status; 6299} 6300 6301status_t AudioFlinger::EffectModule::init() 6302{ 6303 Mutex::Autolock _l(mLock); 6304 if (mEffectInterface == NULL) { 6305 return NO_INIT; 6306 } 6307 status_t cmdStatus; 6308 uint32_t size = sizeof(status_t); 6309 status_t status = (*mEffectInterface)->command(mEffectInterface, 6310 EFFECT_CMD_INIT, 6311 0, 6312 NULL, 6313 &size, 6314 &cmdStatus); 6315 if (status == 0) { 6316 status = cmdStatus; 6317 } 6318 return status; 6319} 6320 6321status_t AudioFlinger::EffectModule::start_l() 6322{ 6323 if (mEffectInterface == NULL) { 6324 return NO_INIT; 6325 } 6326 status_t cmdStatus; 6327 uint32_t size = sizeof(status_t); 6328 status_t status = (*mEffectInterface)->command(mEffectInterface, 6329 EFFECT_CMD_ENABLE, 6330 0, 6331 NULL, 6332 &size, 6333 &cmdStatus); 6334 if (status == 0) { 6335 status = cmdStatus; 6336 } 6337 if (status == 0 && 6338 ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 6339 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC)) { 6340 sp<ThreadBase> thread = mThread.promote(); 6341 if (thread != 0) { 6342 audio_stream_t *stream = thread->stream(); 6343 if (stream != NULL) { 6344 stream->add_audio_effect(stream, mEffectInterface); 6345 } 6346 } 6347 } 6348 return status; 6349} 6350 6351status_t AudioFlinger::EffectModule::stop() 6352{ 6353 Mutex::Autolock _l(mLock); 6354 return stop_l(); 6355} 6356 6357status_t AudioFlinger::EffectModule::stop_l() 6358{ 6359 if (mEffectInterface == NULL) { 6360 return NO_INIT; 6361 } 6362 status_t cmdStatus; 6363 uint32_t size = sizeof(status_t); 6364 status_t status = (*mEffectInterface)->command(mEffectInterface, 6365 EFFECT_CMD_DISABLE, 6366 0, 6367 NULL, 6368 &size, 6369 &cmdStatus); 6370 if (status == 0) { 6371 status = cmdStatus; 6372 } 6373 if (status == 0 && 6374 ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 6375 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC)) { 6376 sp<ThreadBase> thread = mThread.promote(); 6377 if (thread != 0) { 6378 audio_stream_t *stream = thread->stream(); 6379 if (stream != NULL) { 6380 stream->remove_audio_effect(stream, mEffectInterface); 6381 } 6382 } 6383 } 6384 return status; 6385} 6386 6387status_t AudioFlinger::EffectModule::command(uint32_t cmdCode, 6388 uint32_t cmdSize, 6389 void *pCmdData, 6390 uint32_t *replySize, 6391 void *pReplyData) 6392{ 6393 Mutex::Autolock _l(mLock); 6394// LOGV("command(), cmdCode: %d, mEffectInterface: %p", cmdCode, mEffectInterface); 6395 6396 if (mState == DESTROYED || mEffectInterface == NULL) { 6397 return NO_INIT; 6398 } 6399 status_t status = (*mEffectInterface)->command(mEffectInterface, 6400 cmdCode, 6401 cmdSize, 6402 pCmdData, 6403 replySize, 6404 pReplyData); 6405 if (cmdCode != EFFECT_CMD_GET_PARAM && status == NO_ERROR) { 6406 uint32_t size = (replySize == NULL) ? 0 : *replySize; 6407 for (size_t i = 1; i < mHandles.size(); i++) { 6408 sp<EffectHandle> h = mHandles[i].promote(); 6409 if (h != 0) { 6410 h->commandExecuted(cmdCode, cmdSize, pCmdData, size, pReplyData); 6411 } 6412 } 6413 } 6414 return status; 6415} 6416 6417status_t AudioFlinger::EffectModule::setEnabled(bool enabled) 6418{ 6419 6420 Mutex::Autolock _l(mLock); 6421 LOGV("setEnabled %p enabled %d", this, enabled); 6422 6423 if (enabled != isEnabled()) { 6424 status_t status = AudioSystem::setEffectEnabled(mId, enabled); 6425 if (enabled && status != NO_ERROR) { 6426 return status; 6427 } 6428 6429 switch (mState) { 6430 // going from disabled to enabled 6431 case IDLE: 6432 mState = STARTING; 6433 break; 6434 case STOPPED: 6435 mState = RESTART; 6436 break; 6437 case STOPPING: 6438 mState = ACTIVE; 6439 break; 6440 6441 // going from enabled to disabled 6442 case RESTART: 6443 mState = STOPPED; 6444 break; 6445 case STARTING: 6446 mState = IDLE; 6447 break; 6448 case ACTIVE: 6449 mState = STOPPING; 6450 break; 6451 case DESTROYED: 6452 return NO_ERROR; // simply ignore as we are being destroyed 6453 } 6454 for (size_t i = 1; i < mHandles.size(); i++) { 6455 sp<EffectHandle> h = mHandles[i].promote(); 6456 if (h != 0) { 6457 h->setEnabled(enabled); 6458 } 6459 } 6460 } 6461 return NO_ERROR; 6462} 6463 6464bool AudioFlinger::EffectModule::isEnabled() 6465{ 6466 switch (mState) { 6467 case RESTART: 6468 case STARTING: 6469 case ACTIVE: 6470 return true; 6471 case IDLE: 6472 case STOPPING: 6473 case STOPPED: 6474 case DESTROYED: 6475 default: 6476 return false; 6477 } 6478} 6479 6480bool AudioFlinger::EffectModule::isProcessEnabled() 6481{ 6482 switch (mState) { 6483 case RESTART: 6484 case ACTIVE: 6485 case STOPPING: 6486 case STOPPED: 6487 return true; 6488 case IDLE: 6489 case STARTING: 6490 case DESTROYED: 6491 default: 6492 return false; 6493 } 6494} 6495 6496status_t AudioFlinger::EffectModule::setVolume(uint32_t *left, uint32_t *right, bool controller) 6497{ 6498 Mutex::Autolock _l(mLock); 6499 status_t status = NO_ERROR; 6500 6501 // Send volume indication if EFFECT_FLAG_VOLUME_IND is set and read back altered volume 6502 // if controller flag is set (Note that controller == TRUE => EFFECT_FLAG_VOLUME_CTRL set) 6503 if (isProcessEnabled() && 6504 ((mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL || 6505 (mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_IND)) { 6506 status_t cmdStatus; 6507 uint32_t volume[2]; 6508 uint32_t *pVolume = NULL; 6509 uint32_t size = sizeof(volume); 6510 volume[0] = *left; 6511 volume[1] = *right; 6512 if (controller) { 6513 pVolume = volume; 6514 } 6515 status = (*mEffectInterface)->command(mEffectInterface, 6516 EFFECT_CMD_SET_VOLUME, 6517 size, 6518 volume, 6519 &size, 6520 pVolume); 6521 if (controller && status == NO_ERROR && size == sizeof(volume)) { 6522 *left = volume[0]; 6523 *right = volume[1]; 6524 } 6525 } 6526 return status; 6527} 6528 6529status_t AudioFlinger::EffectModule::setDevice(uint32_t device) 6530{ 6531 Mutex::Autolock _l(mLock); 6532 status_t status = NO_ERROR; 6533 if (device && (mDescriptor.flags & EFFECT_FLAG_DEVICE_MASK) == EFFECT_FLAG_DEVICE_IND) { 6534 // audio pre processing modules on RecordThread can receive both output and 6535 // input device indication in the same call 6536 uint32_t dev = device & AUDIO_DEVICE_OUT_ALL; 6537 if (dev) { 6538 status_t cmdStatus; 6539 uint32_t size = sizeof(status_t); 6540 6541 status = (*mEffectInterface)->command(mEffectInterface, 6542 EFFECT_CMD_SET_DEVICE, 6543 sizeof(uint32_t), 6544 &dev, 6545 &size, 6546 &cmdStatus); 6547 if (status == NO_ERROR) { 6548 status = cmdStatus; 6549 } 6550 } 6551 dev = device & AUDIO_DEVICE_IN_ALL; 6552 if (dev) { 6553 status_t cmdStatus; 6554 uint32_t size = sizeof(status_t); 6555 6556 status_t status2 = (*mEffectInterface)->command(mEffectInterface, 6557 EFFECT_CMD_SET_INPUT_DEVICE, 6558 sizeof(uint32_t), 6559 &dev, 6560 &size, 6561 &cmdStatus); 6562 if (status2 == NO_ERROR) { 6563 status2 = cmdStatus; 6564 } 6565 if (status == NO_ERROR) { 6566 status = status2; 6567 } 6568 } 6569 } 6570 return status; 6571} 6572 6573status_t AudioFlinger::EffectModule::setMode(uint32_t mode) 6574{ 6575 Mutex::Autolock _l(mLock); 6576 status_t status = NO_ERROR; 6577 if ((mDescriptor.flags & EFFECT_FLAG_AUDIO_MODE_MASK) == EFFECT_FLAG_AUDIO_MODE_IND) { 6578 status_t cmdStatus; 6579 uint32_t size = sizeof(status_t); 6580 status = (*mEffectInterface)->command(mEffectInterface, 6581 EFFECT_CMD_SET_AUDIO_MODE, 6582 sizeof(int), 6583 &mode, 6584 &size, 6585 &cmdStatus); 6586 if (status == NO_ERROR) { 6587 status = cmdStatus; 6588 } 6589 } 6590 return status; 6591} 6592 6593void AudioFlinger::EffectModule::setSuspended(bool suspended) 6594{ 6595 Mutex::Autolock _l(mLock); 6596 mSuspended = suspended; 6597} 6598bool AudioFlinger::EffectModule::suspended() 6599{ 6600 Mutex::Autolock _l(mLock); 6601 return mSuspended; 6602} 6603 6604status_t AudioFlinger::EffectModule::dump(int fd, const Vector<String16>& args) 6605{ 6606 const size_t SIZE = 256; 6607 char buffer[SIZE]; 6608 String8 result; 6609 6610 snprintf(buffer, SIZE, "\tEffect ID %d:\n", mId); 6611 result.append(buffer); 6612 6613 bool locked = tryLock(mLock); 6614 // failed to lock - AudioFlinger is probably deadlocked 6615 if (!locked) { 6616 result.append("\t\tCould not lock Fx mutex:\n"); 6617 } 6618 6619 result.append("\t\tSession Status State Engine:\n"); 6620 snprintf(buffer, SIZE, "\t\t%05d %03d %03d 0x%08x\n", 6621 mSessionId, mStatus, mState, (uint32_t)mEffectInterface); 6622 result.append(buffer); 6623 6624 result.append("\t\tDescriptor:\n"); 6625 snprintf(buffer, SIZE, "\t\t- UUID: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 6626 mDescriptor.uuid.timeLow, mDescriptor.uuid.timeMid, mDescriptor.uuid.timeHiAndVersion, 6627 mDescriptor.uuid.clockSeq, mDescriptor.uuid.node[0], mDescriptor.uuid.node[1],mDescriptor.uuid.node[2], 6628 mDescriptor.uuid.node[3],mDescriptor.uuid.node[4],mDescriptor.uuid.node[5]); 6629 result.append(buffer); 6630 snprintf(buffer, SIZE, "\t\t- TYPE: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 6631 mDescriptor.type.timeLow, mDescriptor.type.timeMid, mDescriptor.type.timeHiAndVersion, 6632 mDescriptor.type.clockSeq, mDescriptor.type.node[0], mDescriptor.type.node[1],mDescriptor.type.node[2], 6633 mDescriptor.type.node[3],mDescriptor.type.node[4],mDescriptor.type.node[5]); 6634 result.append(buffer); 6635 snprintf(buffer, SIZE, "\t\t- apiVersion: %08X\n\t\t- flags: %08X\n", 6636 mDescriptor.apiVersion, 6637 mDescriptor.flags); 6638 result.append(buffer); 6639 snprintf(buffer, SIZE, "\t\t- name: %s\n", 6640 mDescriptor.name); 6641 result.append(buffer); 6642 snprintf(buffer, SIZE, "\t\t- implementor: %s\n", 6643 mDescriptor.implementor); 6644 result.append(buffer); 6645 6646 result.append("\t\t- Input configuration:\n"); 6647 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 6648 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 6649 (uint32_t)mConfig.inputCfg.buffer.raw, 6650 mConfig.inputCfg.buffer.frameCount, 6651 mConfig.inputCfg.samplingRate, 6652 mConfig.inputCfg.channels, 6653 mConfig.inputCfg.format); 6654 result.append(buffer); 6655 6656 result.append("\t\t- Output configuration:\n"); 6657 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 6658 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 6659 (uint32_t)mConfig.outputCfg.buffer.raw, 6660 mConfig.outputCfg.buffer.frameCount, 6661 mConfig.outputCfg.samplingRate, 6662 mConfig.outputCfg.channels, 6663 mConfig.outputCfg.format); 6664 result.append(buffer); 6665 6666 snprintf(buffer, SIZE, "\t\t%d Clients:\n", mHandles.size()); 6667 result.append(buffer); 6668 result.append("\t\t\tPid Priority Ctrl Locked client server\n"); 6669 for (size_t i = 0; i < mHandles.size(); ++i) { 6670 sp<EffectHandle> handle = mHandles[i].promote(); 6671 if (handle != 0) { 6672 handle->dump(buffer, SIZE); 6673 result.append(buffer); 6674 } 6675 } 6676 6677 result.append("\n"); 6678 6679 write(fd, result.string(), result.length()); 6680 6681 if (locked) { 6682 mLock.unlock(); 6683 } 6684 6685 return NO_ERROR; 6686} 6687 6688// ---------------------------------------------------------------------------- 6689// EffectHandle implementation 6690// ---------------------------------------------------------------------------- 6691 6692#undef LOG_TAG 6693#define LOG_TAG "AudioFlinger::EffectHandle" 6694 6695AudioFlinger::EffectHandle::EffectHandle(const sp<EffectModule>& effect, 6696 const sp<AudioFlinger::Client>& client, 6697 const sp<IEffectClient>& effectClient, 6698 int32_t priority) 6699 : BnEffect(), 6700 mEffect(effect), mEffectClient(effectClient), mClient(client), mCblk(NULL), 6701 mPriority(priority), mHasControl(false), mEnabled(false) 6702{ 6703 LOGV("constructor %p", this); 6704 6705 if (client == 0) { 6706 return; 6707 } 6708 int bufOffset = ((sizeof(effect_param_cblk_t) - 1) / sizeof(int) + 1) * sizeof(int); 6709 mCblkMemory = client->heap()->allocate(EFFECT_PARAM_BUFFER_SIZE + bufOffset); 6710 if (mCblkMemory != 0) { 6711 mCblk = static_cast<effect_param_cblk_t *>(mCblkMemory->pointer()); 6712 6713 if (mCblk) { 6714 new(mCblk) effect_param_cblk_t(); 6715 mBuffer = (uint8_t *)mCblk + bufOffset; 6716 } 6717 } else { 6718 LOGE("not enough memory for Effect size=%u", EFFECT_PARAM_BUFFER_SIZE + sizeof(effect_param_cblk_t)); 6719 return; 6720 } 6721} 6722 6723AudioFlinger::EffectHandle::~EffectHandle() 6724{ 6725 LOGV("Destructor %p", this); 6726 disconnect(false); 6727 LOGV("Destructor DONE %p", this); 6728} 6729 6730status_t AudioFlinger::EffectHandle::enable() 6731{ 6732 LOGV("enable %p", this); 6733 if (!mHasControl) return INVALID_OPERATION; 6734 if (mEffect == 0) return DEAD_OBJECT; 6735 6736 if (mEnabled) { 6737 return NO_ERROR; 6738 } 6739 6740 mEnabled = true; 6741 6742 sp<ThreadBase> thread = mEffect->thread().promote(); 6743 if (thread != 0) { 6744 thread->checkSuspendOnEffectEnabled(mEffect, true, mEffect->sessionId()); 6745 } 6746 6747 // checkSuspendOnEffectEnabled() can suspend this same effect when enabled 6748 if (mEffect->suspended()) { 6749 return NO_ERROR; 6750 } 6751 6752 status_t status = mEffect->setEnabled(true); 6753 if (status != NO_ERROR) { 6754 if (thread != 0) { 6755 thread->checkSuspendOnEffectEnabled(mEffect, false, mEffect->sessionId()); 6756 } 6757 mEnabled = false; 6758 } 6759 return status; 6760} 6761 6762status_t AudioFlinger::EffectHandle::disable() 6763{ 6764 LOGV("disable %p", this); 6765 if (!mHasControl) return INVALID_OPERATION; 6766 if (mEffect == 0) return DEAD_OBJECT; 6767 6768 if (!mEnabled) { 6769 return NO_ERROR; 6770 } 6771 mEnabled = false; 6772 6773 if (mEffect->suspended()) { 6774 return NO_ERROR; 6775 } 6776 6777 status_t status = mEffect->setEnabled(false); 6778 6779 sp<ThreadBase> thread = mEffect->thread().promote(); 6780 if (thread != 0) { 6781 thread->checkSuspendOnEffectEnabled(mEffect, false, mEffect->sessionId()); 6782 } 6783 6784 return status; 6785} 6786 6787void AudioFlinger::EffectHandle::disconnect() 6788{ 6789 disconnect(true); 6790} 6791 6792void AudioFlinger::EffectHandle::disconnect(bool unpiniflast) 6793{ 6794 LOGV("disconnect(%s)", unpiniflast ? "true" : "false"); 6795 if (mEffect == 0) { 6796 return; 6797 } 6798 mEffect->disconnect(this, unpiniflast); 6799 6800 if (mEnabled) { 6801 sp<ThreadBase> thread = mEffect->thread().promote(); 6802 if (thread != 0) { 6803 thread->checkSuspendOnEffectEnabled(mEffect, false, mEffect->sessionId()); 6804 } 6805 } 6806 6807 // release sp on module => module destructor can be called now 6808 mEffect.clear(); 6809 if (mClient != 0) { 6810 if (mCblk) { 6811 mCblk->~effect_param_cblk_t(); // destroy our shared-structure. 6812 } 6813 mCblkMemory.clear(); // and free the shared memory 6814 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 6815 mClient.clear(); 6816 } 6817} 6818 6819status_t AudioFlinger::EffectHandle::command(uint32_t cmdCode, 6820 uint32_t cmdSize, 6821 void *pCmdData, 6822 uint32_t *replySize, 6823 void *pReplyData) 6824{ 6825// LOGV("command(), cmdCode: %d, mHasControl: %d, mEffect: %p", 6826// cmdCode, mHasControl, (mEffect == 0) ? 0 : mEffect.get()); 6827 6828 // only get parameter command is permitted for applications not controlling the effect 6829 if (!mHasControl && cmdCode != EFFECT_CMD_GET_PARAM) { 6830 return INVALID_OPERATION; 6831 } 6832 if (mEffect == 0) return DEAD_OBJECT; 6833 if (mClient == 0) return INVALID_OPERATION; 6834 6835 // handle commands that are not forwarded transparently to effect engine 6836 if (cmdCode == EFFECT_CMD_SET_PARAM_COMMIT) { 6837 // No need to trylock() here as this function is executed in the binder thread serving a particular client process: 6838 // no risk to block the whole media server process or mixer threads is we are stuck here 6839 Mutex::Autolock _l(mCblk->lock); 6840 if (mCblk->clientIndex > EFFECT_PARAM_BUFFER_SIZE || 6841 mCblk->serverIndex > EFFECT_PARAM_BUFFER_SIZE) { 6842 mCblk->serverIndex = 0; 6843 mCblk->clientIndex = 0; 6844 return BAD_VALUE; 6845 } 6846 status_t status = NO_ERROR; 6847 while (mCblk->serverIndex < mCblk->clientIndex) { 6848 int reply; 6849 uint32_t rsize = sizeof(int); 6850 int *p = (int *)(mBuffer + mCblk->serverIndex); 6851 int size = *p++; 6852 if (((uint8_t *)p + size) > mBuffer + mCblk->clientIndex) { 6853 LOGW("command(): invalid parameter block size"); 6854 break; 6855 } 6856 effect_param_t *param = (effect_param_t *)p; 6857 if (param->psize == 0 || param->vsize == 0) { 6858 LOGW("command(): null parameter or value size"); 6859 mCblk->serverIndex += size; 6860 continue; 6861 } 6862 uint32_t psize = sizeof(effect_param_t) + 6863 ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + 6864 param->vsize; 6865 status_t ret = mEffect->command(EFFECT_CMD_SET_PARAM, 6866 psize, 6867 p, 6868 &rsize, 6869 &reply); 6870 // stop at first error encountered 6871 if (ret != NO_ERROR) { 6872 status = ret; 6873 *(int *)pReplyData = reply; 6874 break; 6875 } else if (reply != NO_ERROR) { 6876 *(int *)pReplyData = reply; 6877 break; 6878 } 6879 mCblk->serverIndex += size; 6880 } 6881 mCblk->serverIndex = 0; 6882 mCblk->clientIndex = 0; 6883 return status; 6884 } else if (cmdCode == EFFECT_CMD_ENABLE) { 6885 *(int *)pReplyData = NO_ERROR; 6886 return enable(); 6887 } else if (cmdCode == EFFECT_CMD_DISABLE) { 6888 *(int *)pReplyData = NO_ERROR; 6889 return disable(); 6890 } 6891 6892 return mEffect->command(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6893} 6894 6895sp<IMemory> AudioFlinger::EffectHandle::getCblk() const { 6896 return mCblkMemory; 6897} 6898 6899void AudioFlinger::EffectHandle::setControl(bool hasControl, bool signal, bool enabled) 6900{ 6901 LOGV("setControl %p control %d", this, hasControl); 6902 6903 mHasControl = hasControl; 6904 mEnabled = enabled; 6905 6906 if (signal && mEffectClient != 0) { 6907 mEffectClient->controlStatusChanged(hasControl); 6908 } 6909} 6910 6911void AudioFlinger::EffectHandle::commandExecuted(uint32_t cmdCode, 6912 uint32_t cmdSize, 6913 void *pCmdData, 6914 uint32_t replySize, 6915 void *pReplyData) 6916{ 6917 if (mEffectClient != 0) { 6918 mEffectClient->commandExecuted(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6919 } 6920} 6921 6922 6923 6924void AudioFlinger::EffectHandle::setEnabled(bool enabled) 6925{ 6926 if (mEffectClient != 0) { 6927 mEffectClient->enableStatusChanged(enabled); 6928 } 6929} 6930 6931status_t AudioFlinger::EffectHandle::onTransact( 6932 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 6933{ 6934 return BnEffect::onTransact(code, data, reply, flags); 6935} 6936 6937 6938void AudioFlinger::EffectHandle::dump(char* buffer, size_t size) 6939{ 6940 bool locked = mCblk ? tryLock(mCblk->lock) : false; 6941 6942 snprintf(buffer, size, "\t\t\t%05d %05d %01u %01u %05u %05u\n", 6943 (mClient == NULL) ? getpid() : mClient->pid(), 6944 mPriority, 6945 mHasControl, 6946 !locked, 6947 mCblk ? mCblk->clientIndex : 0, 6948 mCblk ? mCblk->serverIndex : 0 6949 ); 6950 6951 if (locked) { 6952 mCblk->lock.unlock(); 6953 } 6954} 6955 6956#undef LOG_TAG 6957#define LOG_TAG "AudioFlinger::EffectChain" 6958 6959AudioFlinger::EffectChain::EffectChain(const wp<ThreadBase>& wThread, 6960 int sessionId) 6961 : mThread(wThread), mSessionId(sessionId), mActiveTrackCnt(0), mTrackCnt(0), 6962 mOwnInBuffer(false), mVolumeCtrlIdx(-1), mLeftVolume(UINT_MAX), mRightVolume(UINT_MAX), 6963 mNewLeftVolume(UINT_MAX), mNewRightVolume(UINT_MAX) 6964{ 6965 mStrategy = AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 6966} 6967 6968AudioFlinger::EffectChain::~EffectChain() 6969{ 6970 if (mOwnInBuffer) { 6971 delete mInBuffer; 6972 } 6973 6974} 6975 6976// getEffectFromDesc_l() must be called with ThreadBase::mLock held 6977sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromDesc_l(effect_descriptor_t *descriptor) 6978{ 6979 sp<EffectModule> effect; 6980 size_t size = mEffects.size(); 6981 6982 for (size_t i = 0; i < size; i++) { 6983 if (memcmp(&mEffects[i]->desc().uuid, &descriptor->uuid, sizeof(effect_uuid_t)) == 0) { 6984 effect = mEffects[i]; 6985 break; 6986 } 6987 } 6988 return effect; 6989} 6990 6991// getEffectFromId_l() must be called with ThreadBase::mLock held 6992sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromId_l(int id) 6993{ 6994 sp<EffectModule> effect; 6995 size_t size = mEffects.size(); 6996 6997 for (size_t i = 0; i < size; i++) { 6998 // by convention, return first effect if id provided is 0 (0 is never a valid id) 6999 if (id == 0 || mEffects[i]->id() == id) { 7000 effect = mEffects[i]; 7001 break; 7002 } 7003 } 7004 return effect; 7005} 7006 7007// getEffectFromType_l() must be called with ThreadBase::mLock held 7008sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromType_l( 7009 const effect_uuid_t *type) 7010{ 7011 sp<EffectModule> effect; 7012 size_t size = mEffects.size(); 7013 7014 for (size_t i = 0; i < size; i++) { 7015 if (memcmp(&mEffects[i]->desc().type, type, sizeof(effect_uuid_t)) == 0) { 7016 effect = mEffects[i]; 7017 break; 7018 } 7019 } 7020 return effect; 7021} 7022 7023// Must be called with EffectChain::mLock locked 7024void AudioFlinger::EffectChain::process_l() 7025{ 7026 sp<ThreadBase> thread = mThread.promote(); 7027 if (thread == 0) { 7028 LOGW("process_l(): cannot promote mixer thread"); 7029 return; 7030 } 7031 bool isGlobalSession = (mSessionId == AUDIO_SESSION_OUTPUT_MIX) || 7032 (mSessionId == AUDIO_SESSION_OUTPUT_STAGE); 7033 bool tracksOnSession = false; 7034 if (!isGlobalSession) { 7035 tracksOnSession = (trackCnt() != 0); 7036 } 7037 7038 // if no track is active, input buffer must be cleared here as the mixer process 7039 // will not do it 7040 if (tracksOnSession && 7041 activeTrackCnt() == 0) { 7042 size_t numSamples = thread->frameCount() * thread->channelCount(); 7043 memset(mInBuffer, 0, numSamples * sizeof(int16_t)); 7044 } 7045 7046 size_t size = mEffects.size(); 7047 // do not process effect if no track is present in same audio session 7048 if (isGlobalSession || tracksOnSession) { 7049 for (size_t i = 0; i < size; i++) { 7050 mEffects[i]->process(); 7051 } 7052 } 7053 for (size_t i = 0; i < size; i++) { 7054 mEffects[i]->updateState(); 7055 } 7056} 7057 7058// addEffect_l() must be called with PlaybackThread::mLock held 7059status_t AudioFlinger::EffectChain::addEffect_l(const sp<EffectModule>& effect) 7060{ 7061 effect_descriptor_t desc = effect->desc(); 7062 uint32_t insertPref = desc.flags & EFFECT_FLAG_INSERT_MASK; 7063 7064 Mutex::Autolock _l(mLock); 7065 effect->setChain(this); 7066 sp<ThreadBase> thread = mThread.promote(); 7067 if (thread == 0) { 7068 return NO_INIT; 7069 } 7070 effect->setThread(thread); 7071 7072 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 7073 // Auxiliary effects are inserted at the beginning of mEffects vector as 7074 // they are processed first and accumulated in chain input buffer 7075 mEffects.insertAt(effect, 0); 7076 7077 // the input buffer for auxiliary effect contains mono samples in 7078 // 32 bit format. This is to avoid saturation in AudoMixer 7079 // accumulation stage. Saturation is done in EffectModule::process() before 7080 // calling the process in effect engine 7081 size_t numSamples = thread->frameCount(); 7082 int32_t *buffer = new int32_t[numSamples]; 7083 memset(buffer, 0, numSamples * sizeof(int32_t)); 7084 effect->setInBuffer((int16_t *)buffer); 7085 // auxiliary effects output samples to chain input buffer for further processing 7086 // by insert effects 7087 effect->setOutBuffer(mInBuffer); 7088 } else { 7089 // Insert effects are inserted at the end of mEffects vector as they are processed 7090 // after track and auxiliary effects. 7091 // Insert effect order as a function of indicated preference: 7092 // if EFFECT_FLAG_INSERT_EXCLUSIVE, insert in first position or reject if 7093 // another effect is present 7094 // else if EFFECT_FLAG_INSERT_FIRST, insert in first position or after the 7095 // last effect claiming first position 7096 // else if EFFECT_FLAG_INSERT_LAST, insert in last position or before the 7097 // first effect claiming last position 7098 // else if EFFECT_FLAG_INSERT_ANY insert after first or before last 7099 // Reject insertion if an effect with EFFECT_FLAG_INSERT_EXCLUSIVE is 7100 // already present 7101 7102 int size = (int)mEffects.size(); 7103 int idx_insert = size; 7104 int idx_insert_first = -1; 7105 int idx_insert_last = -1; 7106 7107 for (int i = 0; i < size; i++) { 7108 effect_descriptor_t d = mEffects[i]->desc(); 7109 uint32_t iMode = d.flags & EFFECT_FLAG_TYPE_MASK; 7110 uint32_t iPref = d.flags & EFFECT_FLAG_INSERT_MASK; 7111 if (iMode == EFFECT_FLAG_TYPE_INSERT) { 7112 // check invalid effect chaining combinations 7113 if (insertPref == EFFECT_FLAG_INSERT_EXCLUSIVE || 7114 iPref == EFFECT_FLAG_INSERT_EXCLUSIVE) { 7115 LOGW("addEffect_l() could not insert effect %s: exclusive conflict with %s", desc.name, d.name); 7116 return INVALID_OPERATION; 7117 } 7118 // remember position of first insert effect and by default 7119 // select this as insert position for new effect 7120 if (idx_insert == size) { 7121 idx_insert = i; 7122 } 7123 // remember position of last insert effect claiming 7124 // first position 7125 if (iPref == EFFECT_FLAG_INSERT_FIRST) { 7126 idx_insert_first = i; 7127 } 7128 // remember position of first insert effect claiming 7129 // last position 7130 if (iPref == EFFECT_FLAG_INSERT_LAST && 7131 idx_insert_last == -1) { 7132 idx_insert_last = i; 7133 } 7134 } 7135 } 7136 7137 // modify idx_insert from first position if needed 7138 if (insertPref == EFFECT_FLAG_INSERT_LAST) { 7139 if (idx_insert_last != -1) { 7140 idx_insert = idx_insert_last; 7141 } else { 7142 idx_insert = size; 7143 } 7144 } else { 7145 if (idx_insert_first != -1) { 7146 idx_insert = idx_insert_first + 1; 7147 } 7148 } 7149 7150 // always read samples from chain input buffer 7151 effect->setInBuffer(mInBuffer); 7152 7153 // if last effect in the chain, output samples to chain 7154 // output buffer, otherwise to chain input buffer 7155 if (idx_insert == size) { 7156 if (idx_insert != 0) { 7157 mEffects[idx_insert-1]->setOutBuffer(mInBuffer); 7158 mEffects[idx_insert-1]->configure(); 7159 } 7160 effect->setOutBuffer(mOutBuffer); 7161 } else { 7162 effect->setOutBuffer(mInBuffer); 7163 } 7164 mEffects.insertAt(effect, idx_insert); 7165 7166 LOGV("addEffect_l() effect %p, added in chain %p at rank %d", effect.get(), this, idx_insert); 7167 } 7168 effect->configure(); 7169 return NO_ERROR; 7170} 7171 7172// removeEffect_l() must be called with PlaybackThread::mLock held 7173size_t AudioFlinger::EffectChain::removeEffect_l(const sp<EffectModule>& effect) 7174{ 7175 Mutex::Autolock _l(mLock); 7176 int size = (int)mEffects.size(); 7177 int i; 7178 uint32_t type = effect->desc().flags & EFFECT_FLAG_TYPE_MASK; 7179 7180 for (i = 0; i < size; i++) { 7181 if (effect == mEffects[i]) { 7182 // calling stop here will remove pre-processing effect from the audio HAL. 7183 // This is safe as we hold the EffectChain mutex which guarantees that we are not in 7184 // the middle of a read from audio HAL 7185 mEffects[i]->stop(); 7186 if (type == EFFECT_FLAG_TYPE_AUXILIARY) { 7187 delete[] effect->inBuffer(); 7188 } else { 7189 if (i == size - 1 && i != 0) { 7190 mEffects[i - 1]->setOutBuffer(mOutBuffer); 7191 mEffects[i - 1]->configure(); 7192 } 7193 } 7194 mEffects.removeAt(i); 7195 LOGV("removeEffect_l() effect %p, removed from chain %p at rank %d", effect.get(), this, i); 7196 break; 7197 } 7198 } 7199 7200 return mEffects.size(); 7201} 7202 7203// setDevice_l() must be called with PlaybackThread::mLock held 7204void AudioFlinger::EffectChain::setDevice_l(uint32_t device) 7205{ 7206 size_t size = mEffects.size(); 7207 for (size_t i = 0; i < size; i++) { 7208 mEffects[i]->setDevice(device); 7209 } 7210} 7211 7212// setMode_l() must be called with PlaybackThread::mLock held 7213void AudioFlinger::EffectChain::setMode_l(uint32_t mode) 7214{ 7215 size_t size = mEffects.size(); 7216 for (size_t i = 0; i < size; i++) { 7217 mEffects[i]->setMode(mode); 7218 } 7219} 7220 7221// setVolume_l() must be called with PlaybackThread::mLock held 7222bool AudioFlinger::EffectChain::setVolume_l(uint32_t *left, uint32_t *right) 7223{ 7224 uint32_t newLeft = *left; 7225 uint32_t newRight = *right; 7226 bool hasControl = false; 7227 int ctrlIdx = -1; 7228 size_t size = mEffects.size(); 7229 7230 // first update volume controller 7231 for (size_t i = size; i > 0; i--) { 7232 if (mEffects[i - 1]->isProcessEnabled() && 7233 (mEffects[i - 1]->desc().flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL) { 7234 ctrlIdx = i - 1; 7235 hasControl = true; 7236 break; 7237 } 7238 } 7239 7240 if (ctrlIdx == mVolumeCtrlIdx && *left == mLeftVolume && *right == mRightVolume) { 7241 if (hasControl) { 7242 *left = mNewLeftVolume; 7243 *right = mNewRightVolume; 7244 } 7245 return hasControl; 7246 } 7247 7248 mVolumeCtrlIdx = ctrlIdx; 7249 mLeftVolume = newLeft; 7250 mRightVolume = newRight; 7251 7252 // second get volume update from volume controller 7253 if (ctrlIdx >= 0) { 7254 mEffects[ctrlIdx]->setVolume(&newLeft, &newRight, true); 7255 mNewLeftVolume = newLeft; 7256 mNewRightVolume = newRight; 7257 } 7258 // then indicate volume to all other effects in chain. 7259 // Pass altered volume to effects before volume controller 7260 // and requested volume to effects after controller 7261 uint32_t lVol = newLeft; 7262 uint32_t rVol = newRight; 7263 7264 for (size_t i = 0; i < size; i++) { 7265 if ((int)i == ctrlIdx) continue; 7266 // this also works for ctrlIdx == -1 when there is no volume controller 7267 if ((int)i > ctrlIdx) { 7268 lVol = *left; 7269 rVol = *right; 7270 } 7271 mEffects[i]->setVolume(&lVol, &rVol, false); 7272 } 7273 *left = newLeft; 7274 *right = newRight; 7275 7276 return hasControl; 7277} 7278 7279status_t AudioFlinger::EffectChain::dump(int fd, const Vector<String16>& args) 7280{ 7281 const size_t SIZE = 256; 7282 char buffer[SIZE]; 7283 String8 result; 7284 7285 snprintf(buffer, SIZE, "Effects for session %d:\n", mSessionId); 7286 result.append(buffer); 7287 7288 bool locked = tryLock(mLock); 7289 // failed to lock - AudioFlinger is probably deadlocked 7290 if (!locked) { 7291 result.append("\tCould not lock mutex:\n"); 7292 } 7293 7294 result.append("\tNum fx In buffer Out buffer Active tracks:\n"); 7295 snprintf(buffer, SIZE, "\t%02d 0x%08x 0x%08x %d\n", 7296 mEffects.size(), 7297 (uint32_t)mInBuffer, 7298 (uint32_t)mOutBuffer, 7299 mActiveTrackCnt); 7300 result.append(buffer); 7301 write(fd, result.string(), result.size()); 7302 7303 for (size_t i = 0; i < mEffects.size(); ++i) { 7304 sp<EffectModule> effect = mEffects[i]; 7305 if (effect != 0) { 7306 effect->dump(fd, args); 7307 } 7308 } 7309 7310 if (locked) { 7311 mLock.unlock(); 7312 } 7313 7314 return NO_ERROR; 7315} 7316 7317// must be called with ThreadBase::mLock held 7318void AudioFlinger::EffectChain::setEffectSuspended_l( 7319 const effect_uuid_t *type, bool suspend) 7320{ 7321 sp<SuspendedEffectDesc> desc; 7322 // use effect type UUID timelow as key as there is no real risk of identical 7323 // timeLow fields among effect type UUIDs. 7324 int index = mSuspendedEffects.indexOfKey(type->timeLow); 7325 if (suspend) { 7326 if (index >= 0) { 7327 desc = mSuspendedEffects.valueAt(index); 7328 } else { 7329 desc = new SuspendedEffectDesc(); 7330 memcpy(&desc->mType, type, sizeof(effect_uuid_t)); 7331 mSuspendedEffects.add(type->timeLow, desc); 7332 LOGV("setEffectSuspended_l() add entry for %08x", type->timeLow); 7333 } 7334 if (desc->mRefCount++ == 0) { 7335 sp<EffectModule> effect = getEffectIfEnabled(type); 7336 if (effect != 0) { 7337 desc->mEffect = effect; 7338 effect->setSuspended(true); 7339 effect->setEnabled(false); 7340 } 7341 } 7342 } else { 7343 if (index < 0) { 7344 return; 7345 } 7346 desc = mSuspendedEffects.valueAt(index); 7347 if (desc->mRefCount <= 0) { 7348 LOGW("setEffectSuspended_l() restore refcount should not be 0 %d", desc->mRefCount); 7349 desc->mRefCount = 1; 7350 } 7351 if (--desc->mRefCount == 0) { 7352 LOGV("setEffectSuspended_l() remove entry for %08x", mSuspendedEffects.keyAt(index)); 7353 if (desc->mEffect != 0) { 7354 sp<EffectModule> effect = desc->mEffect.promote(); 7355 if (effect != 0) { 7356 effect->setSuspended(false); 7357 sp<EffectHandle> handle = effect->controlHandle(); 7358 if (handle != 0) { 7359 effect->setEnabled(handle->enabled()); 7360 } 7361 } 7362 desc->mEffect.clear(); 7363 } 7364 mSuspendedEffects.removeItemsAt(index); 7365 } 7366 } 7367} 7368 7369// must be called with ThreadBase::mLock held 7370void AudioFlinger::EffectChain::setEffectSuspendedAll_l(bool suspend) 7371{ 7372 sp<SuspendedEffectDesc> desc; 7373 7374 int index = mSuspendedEffects.indexOfKey((int)kKeyForSuspendAll); 7375 if (suspend) { 7376 if (index >= 0) { 7377 desc = mSuspendedEffects.valueAt(index); 7378 } else { 7379 desc = new SuspendedEffectDesc(); 7380 mSuspendedEffects.add((int)kKeyForSuspendAll, desc); 7381 LOGV("setEffectSuspendedAll_l() add entry for 0"); 7382 } 7383 if (desc->mRefCount++ == 0) { 7384 Vector< sp<EffectModule> > effects = getSuspendEligibleEffects(); 7385 for (size_t i = 0; i < effects.size(); i++) { 7386 setEffectSuspended_l(&effects[i]->desc().type, true); 7387 } 7388 } 7389 } else { 7390 if (index < 0) { 7391 return; 7392 } 7393 desc = mSuspendedEffects.valueAt(index); 7394 if (desc->mRefCount <= 0) { 7395 LOGW("setEffectSuspendedAll_l() restore refcount should not be 0 %d", desc->mRefCount); 7396 desc->mRefCount = 1; 7397 } 7398 if (--desc->mRefCount == 0) { 7399 Vector<const effect_uuid_t *> types; 7400 for (size_t i = 0; i < mSuspendedEffects.size(); i++) { 7401 if (mSuspendedEffects.keyAt(i) == (int)kKeyForSuspendAll) { 7402 continue; 7403 } 7404 types.add(&mSuspendedEffects.valueAt(i)->mType); 7405 } 7406 for (size_t i = 0; i < types.size(); i++) { 7407 setEffectSuspended_l(types[i], false); 7408 } 7409 LOGV("setEffectSuspendedAll_l() remove entry for %08x", mSuspendedEffects.keyAt(index)); 7410 mSuspendedEffects.removeItem((int)kKeyForSuspendAll); 7411 } 7412 } 7413} 7414 7415bool AudioFlinger::EffectChain::isEffectEligibleForSuspend(const effect_descriptor_t& desc) 7416{ 7417 // auxiliary effects and visualizer are never suspended on output mix 7418 if ((mSessionId == AUDIO_SESSION_OUTPUT_MIX) && 7419 (((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) || 7420 (memcmp(&desc.type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0))) { 7421 return false; 7422 } 7423 return true; 7424} 7425 7426Vector< sp<AudioFlinger::EffectModule> > AudioFlinger::EffectChain::getSuspendEligibleEffects() 7427{ 7428 Vector< sp<EffectModule> > effects; 7429 for (size_t i = 0; i < mEffects.size(); i++) { 7430 if (!isEffectEligibleForSuspend(mEffects[i]->desc())) { 7431 continue; 7432 } 7433 effects.add(mEffects[i]); 7434 } 7435 return effects; 7436} 7437 7438sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectIfEnabled( 7439 const effect_uuid_t *type) 7440{ 7441 sp<EffectModule> effect; 7442 effect = getEffectFromType_l(type); 7443 if (effect != 0 && !effect->isEnabled()) { 7444 effect.clear(); 7445 } 7446 return effect; 7447} 7448 7449void AudioFlinger::EffectChain::checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 7450 bool enabled) 7451{ 7452 int index = mSuspendedEffects.indexOfKey(effect->desc().type.timeLow); 7453 if (enabled) { 7454 if (index < 0) { 7455 // if the effect is not suspend check if all effects are suspended 7456 index = mSuspendedEffects.indexOfKey((int)kKeyForSuspendAll); 7457 if (index < 0) { 7458 return; 7459 } 7460 if (!isEffectEligibleForSuspend(effect->desc())) { 7461 return; 7462 } 7463 setEffectSuspended_l(&effect->desc().type, enabled); 7464 index = mSuspendedEffects.indexOfKey(effect->desc().type.timeLow); 7465 if (index < 0) { 7466 LOGW("checkSuspendOnEffectEnabled() Fx should be suspended here!"); 7467 return; 7468 } 7469 } 7470 LOGV("checkSuspendOnEffectEnabled() enable suspending fx %08x", 7471 effect->desc().type.timeLow); 7472 sp<SuspendedEffectDesc> desc = mSuspendedEffects.valueAt(index); 7473 // if effect is requested to suspended but was not yet enabled, supend it now. 7474 if (desc->mEffect == 0) { 7475 desc->mEffect = effect; 7476 effect->setEnabled(false); 7477 effect->setSuspended(true); 7478 } 7479 } else { 7480 if (index < 0) { 7481 return; 7482 } 7483 LOGV("checkSuspendOnEffectEnabled() disable restoring fx %08x", 7484 effect->desc().type.timeLow); 7485 sp<SuspendedEffectDesc> desc = mSuspendedEffects.valueAt(index); 7486 desc->mEffect.clear(); 7487 effect->setSuspended(false); 7488 } 7489} 7490 7491#undef LOG_TAG 7492#define LOG_TAG "AudioFlinger" 7493 7494// ---------------------------------------------------------------------------- 7495 7496status_t AudioFlinger::onTransact( 7497 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 7498{ 7499 return BnAudioFlinger::onTransact(code, data, reply, flags); 7500} 7501 7502}; // namespace android 7503