AudioFlinger.cpp revision ec35a1416472865dbebc22b10199ad718ed2cc95
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 90static const nsecs_t kSetParametersTimeout = seconds(2); 91 92// ---------------------------------------------------------------------------- 93 94static bool recordingAllowed() { 95 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 96 bool ok = checkCallingPermission(String16("android.permission.RECORD_AUDIO")); 97 if (!ok) LOGE("Request requires android.permission.RECORD_AUDIO"); 98 return ok; 99} 100 101static bool settingsAllowed() { 102 if (getpid() == IPCThreadState::self()->getCallingPid()) return true; 103 bool ok = checkCallingPermission(String16("android.permission.MODIFY_AUDIO_SETTINGS")); 104 if (!ok) LOGE("Request requires android.permission.MODIFY_AUDIO_SETTINGS"); 105 return ok; 106} 107 108// To collect the amplifier usage 109static void addBatteryData(uint32_t params) { 110 sp<IBinder> binder = 111 defaultServiceManager()->getService(String16("media.player")); 112 sp<IMediaPlayerService> service = interface_cast<IMediaPlayerService>(binder); 113 if (service.get() == NULL) { 114 LOGW("Cannot connect to the MediaPlayerService for battery tracking"); 115 return; 116 } 117 118 service->addBatteryData(params); 119} 120 121static int load_audio_interface(const char *if_name, const hw_module_t **mod, 122 audio_hw_device_t **dev) 123{ 124 int rc; 125 126 rc = hw_get_module_by_class(AUDIO_HARDWARE_MODULE_ID, if_name, mod); 127 if (rc) 128 goto out; 129 130 rc = audio_hw_device_open(*mod, dev); 131 LOGE_IF(rc, "couldn't open audio hw device in %s.%s (%s)", 132 AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc)); 133 if (rc) 134 goto out; 135 136 return 0; 137 138out: 139 *mod = NULL; 140 *dev = NULL; 141 return rc; 142} 143 144static const char *audio_interfaces[] = { 145 "primary", 146 "a2dp", 147 "usb", 148}; 149#define ARRAY_SIZE(x) (sizeof((x))/sizeof(((x)[0]))) 150 151// ---------------------------------------------------------------------------- 152 153AudioFlinger::AudioFlinger() 154 : BnAudioFlinger(), 155 mPrimaryHardwareDev(0), mMasterVolume(1.0f), mMasterMute(false), mNextUniqueId(1), 156 mBtNrecIsOff(false) 157{ 158} 159 160void AudioFlinger::onFirstRef() 161{ 162 int rc = 0; 163 164 Mutex::Autolock _l(mLock); 165 166 /* TODO: move all this work into an Init() function */ 167 mHardwareStatus = AUDIO_HW_IDLE; 168 169 for (size_t i = 0; i < ARRAY_SIZE(audio_interfaces); i++) { 170 const hw_module_t *mod; 171 audio_hw_device_t *dev; 172 173 rc = load_audio_interface(audio_interfaces[i], &mod, &dev); 174 if (rc) 175 continue; 176 177 LOGI("Loaded %s audio interface from %s (%s)", audio_interfaces[i], 178 mod->name, mod->id); 179 mAudioHwDevs.push(dev); 180 181 if (!mPrimaryHardwareDev) { 182 mPrimaryHardwareDev = dev; 183 LOGI("Using '%s' (%s.%s) as the primary audio interface", 184 mod->name, mod->id, audio_interfaces[i]); 185 } 186 } 187 188 mHardwareStatus = AUDIO_HW_INIT; 189 190 if (!mPrimaryHardwareDev || mAudioHwDevs.size() == 0) { 191 LOGE("Primary audio interface not found"); 192 return; 193 } 194 195 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 196 audio_hw_device_t *dev = mAudioHwDevs[i]; 197 198 mHardwareStatus = AUDIO_HW_INIT; 199 rc = dev->init_check(dev); 200 if (rc == 0) { 201 AutoMutex lock(mHardwareLock); 202 203 mMode = AUDIO_MODE_NORMAL; 204 mHardwareStatus = AUDIO_HW_SET_MODE; 205 dev->set_mode(dev, mMode); 206 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 207 dev->set_master_volume(dev, 1.0f); 208 mHardwareStatus = AUDIO_HW_IDLE; 209 } 210 } 211} 212 213status_t AudioFlinger::initCheck() const 214{ 215 Mutex::Autolock _l(mLock); 216 if (mPrimaryHardwareDev == NULL || mAudioHwDevs.size() == 0) 217 return NO_INIT; 218 return NO_ERROR; 219} 220 221AudioFlinger::~AudioFlinger() 222{ 223 int num_devs = mAudioHwDevs.size(); 224 225 while (!mRecordThreads.isEmpty()) { 226 // closeInput() will remove first entry from mRecordThreads 227 closeInput(mRecordThreads.keyAt(0)); 228 } 229 while (!mPlaybackThreads.isEmpty()) { 230 // closeOutput() will remove first entry from mPlaybackThreads 231 closeOutput(mPlaybackThreads.keyAt(0)); 232 } 233 234 for (int i = 0; i < num_devs; i++) { 235 audio_hw_device_t *dev = mAudioHwDevs[i]; 236 audio_hw_device_close(dev); 237 } 238 mAudioHwDevs.clear(); 239} 240 241audio_hw_device_t* AudioFlinger::findSuitableHwDev_l(uint32_t devices) 242{ 243 /* first matching HW device is returned */ 244 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 245 audio_hw_device_t *dev = mAudioHwDevs[i]; 246 if ((dev->get_supported_devices(dev) & devices) == devices) 247 return dev; 248 } 249 return NULL; 250} 251 252status_t AudioFlinger::dumpClients(int fd, const Vector<String16>& args) 253{ 254 const size_t SIZE = 256; 255 char buffer[SIZE]; 256 String8 result; 257 258 result.append("Clients:\n"); 259 for (size_t i = 0; i < mClients.size(); ++i) { 260 wp<Client> wClient = mClients.valueAt(i); 261 if (wClient != 0) { 262 sp<Client> client = wClient.promote(); 263 if (client != 0) { 264 snprintf(buffer, SIZE, " pid: %d\n", client->pid()); 265 result.append(buffer); 266 } 267 } 268 } 269 270 result.append("Global session refs:\n"); 271 result.append(" session pid cnt\n"); 272 for (size_t i = 0; i < mAudioSessionRefs.size(); i++) { 273 AudioSessionRef *r = mAudioSessionRefs[i]; 274 snprintf(buffer, SIZE, " %7d %3d %3d\n", r->sessionid, r->pid, r->cnt); 275 result.append(buffer); 276 } 277 write(fd, result.string(), result.size()); 278 return NO_ERROR; 279} 280 281 282status_t AudioFlinger::dumpInternals(int fd, const Vector<String16>& args) 283{ 284 const size_t SIZE = 256; 285 char buffer[SIZE]; 286 String8 result; 287 int hardwareStatus = mHardwareStatus; 288 289 snprintf(buffer, SIZE, "Hardware status: %d\n", hardwareStatus); 290 result.append(buffer); 291 write(fd, result.string(), result.size()); 292 return NO_ERROR; 293} 294 295status_t AudioFlinger::dumpPermissionDenial(int fd, const Vector<String16>& args) 296{ 297 const size_t SIZE = 256; 298 char buffer[SIZE]; 299 String8 result; 300 snprintf(buffer, SIZE, "Permission Denial: " 301 "can't dump AudioFlinger from pid=%d, uid=%d\n", 302 IPCThreadState::self()->getCallingPid(), 303 IPCThreadState::self()->getCallingUid()); 304 result.append(buffer); 305 write(fd, result.string(), result.size()); 306 return NO_ERROR; 307} 308 309static bool tryLock(Mutex& mutex) 310{ 311 bool locked = false; 312 for (int i = 0; i < kDumpLockRetries; ++i) { 313 if (mutex.tryLock() == NO_ERROR) { 314 locked = true; 315 break; 316 } 317 usleep(kDumpLockSleep); 318 } 319 return locked; 320} 321 322status_t AudioFlinger::dump(int fd, const Vector<String16>& args) 323{ 324 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 325 dumpPermissionDenial(fd, args); 326 } else { 327 // get state of hardware lock 328 bool hardwareLocked = tryLock(mHardwareLock); 329 if (!hardwareLocked) { 330 String8 result(kHardwareLockedString); 331 write(fd, result.string(), result.size()); 332 } else { 333 mHardwareLock.unlock(); 334 } 335 336 bool locked = tryLock(mLock); 337 338 // failed to lock - AudioFlinger is probably deadlocked 339 if (!locked) { 340 String8 result(kDeadlockedString); 341 write(fd, result.string(), result.size()); 342 } 343 344 dumpClients(fd, args); 345 dumpInternals(fd, args); 346 347 // dump playback threads 348 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 349 mPlaybackThreads.valueAt(i)->dump(fd, args); 350 } 351 352 // dump record threads 353 for (size_t i = 0; i < mRecordThreads.size(); i++) { 354 mRecordThreads.valueAt(i)->dump(fd, args); 355 } 356 357 // dump all hardware devs 358 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 359 audio_hw_device_t *dev = mAudioHwDevs[i]; 360 dev->dump(dev, fd); 361 } 362 if (locked) mLock.unlock(); 363 } 364 return NO_ERROR; 365} 366 367 368// IAudioFlinger interface 369 370 371sp<IAudioTrack> AudioFlinger::createTrack( 372 pid_t pid, 373 int streamType, 374 uint32_t sampleRate, 375 uint32_t format, 376 uint32_t channelMask, 377 int frameCount, 378 uint32_t flags, 379 const sp<IMemory>& sharedBuffer, 380 int output, 381 int *sessionId, 382 status_t *status) 383{ 384 sp<PlaybackThread::Track> track; 385 sp<TrackHandle> trackHandle; 386 sp<Client> client; 387 wp<Client> wclient; 388 status_t lStatus; 389 int lSessionId; 390 391 if (streamType >= AUDIO_STREAM_CNT) { 392 LOGE("invalid stream type"); 393 lStatus = BAD_VALUE; 394 goto Exit; 395 } 396 397 { 398 Mutex::Autolock _l(mLock); 399 PlaybackThread *thread = checkPlaybackThread_l(output); 400 PlaybackThread *effectThread = NULL; 401 if (thread == NULL) { 402 LOGE("unknown output thread"); 403 lStatus = BAD_VALUE; 404 goto Exit; 405 } 406 407 wclient = mClients.valueFor(pid); 408 409 if (wclient != NULL) { 410 client = wclient.promote(); 411 } else { 412 client = new Client(this, pid); 413 mClients.add(pid, client); 414 } 415 416 LOGV("createTrack() sessionId: %d", (sessionId == NULL) ? -2 : *sessionId); 417 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 418 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 419 sp<PlaybackThread> t = mPlaybackThreads.valueAt(i); 420 if (mPlaybackThreads.keyAt(i) != output) { 421 // prevent same audio session on different output threads 422 uint32_t sessions = t->hasAudioSession(*sessionId); 423 if (sessions & PlaybackThread::TRACK_SESSION) { 424 lStatus = BAD_VALUE; 425 goto Exit; 426 } 427 // check if an effect with same session ID is waiting for a track to be created 428 if (sessions & PlaybackThread::EFFECT_SESSION) { 429 effectThread = t.get(); 430 } 431 } 432 } 433 lSessionId = *sessionId; 434 } else { 435 // if no audio session id is provided, create one here 436 lSessionId = nextUniqueId(); 437 if (sessionId != NULL) { 438 *sessionId = lSessionId; 439 } 440 } 441 LOGV("createTrack() lSessionId: %d", lSessionId); 442 443 track = thread->createTrack_l(client, streamType, sampleRate, format, 444 channelMask, frameCount, sharedBuffer, lSessionId, &lStatus); 445 446 // move effect chain to this output thread if an effect on same session was waiting 447 // for a track to be created 448 if (lStatus == NO_ERROR && effectThread != NULL) { 449 Mutex::Autolock _dl(thread->mLock); 450 Mutex::Autolock _sl(effectThread->mLock); 451 moveEffectChain_l(lSessionId, effectThread, thread, true); 452 } 453 } 454 if (lStatus == NO_ERROR) { 455 trackHandle = new TrackHandle(track); 456 } else { 457 // remove local strong reference to Client before deleting the Track so that the Client 458 // destructor is called by the TrackBase destructor with mLock held 459 client.clear(); 460 track.clear(); 461 } 462 463Exit: 464 if(status) { 465 *status = lStatus; 466 } 467 return trackHandle; 468} 469 470uint32_t AudioFlinger::sampleRate(int output) const 471{ 472 Mutex::Autolock _l(mLock); 473 PlaybackThread *thread = checkPlaybackThread_l(output); 474 if (thread == NULL) { 475 LOGW("sampleRate() unknown thread %d", output); 476 return 0; 477 } 478 return thread->sampleRate(); 479} 480 481int AudioFlinger::channelCount(int output) const 482{ 483 Mutex::Autolock _l(mLock); 484 PlaybackThread *thread = checkPlaybackThread_l(output); 485 if (thread == NULL) { 486 LOGW("channelCount() unknown thread %d", output); 487 return 0; 488 } 489 return thread->channelCount(); 490} 491 492uint32_t AudioFlinger::format(int output) const 493{ 494 Mutex::Autolock _l(mLock); 495 PlaybackThread *thread = checkPlaybackThread_l(output); 496 if (thread == NULL) { 497 LOGW("format() unknown thread %d", output); 498 return 0; 499 } 500 return thread->format(); 501} 502 503size_t AudioFlinger::frameCount(int output) const 504{ 505 Mutex::Autolock _l(mLock); 506 PlaybackThread *thread = checkPlaybackThread_l(output); 507 if (thread == NULL) { 508 LOGW("frameCount() unknown thread %d", output); 509 return 0; 510 } 511 return thread->frameCount(); 512} 513 514uint32_t AudioFlinger::latency(int output) const 515{ 516 Mutex::Autolock _l(mLock); 517 PlaybackThread *thread = checkPlaybackThread_l(output); 518 if (thread == NULL) { 519 LOGW("latency() unknown thread %d", output); 520 return 0; 521 } 522 return thread->latency(); 523} 524 525status_t AudioFlinger::setMasterVolume(float value) 526{ 527 status_t ret = initCheck(); 528 if (ret != NO_ERROR) { 529 return ret; 530 } 531 532 // check calling permissions 533 if (!settingsAllowed()) { 534 return PERMISSION_DENIED; 535 } 536 537 // when hw supports master volume, don't scale in sw mixer 538 { // scope for the lock 539 AutoMutex lock(mHardwareLock); 540 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 541 if (mPrimaryHardwareDev->set_master_volume(mPrimaryHardwareDev, value) == NO_ERROR) { 542 value = 1.0f; 543 } 544 mHardwareStatus = AUDIO_HW_IDLE; 545 } 546 547 Mutex::Autolock _l(mLock); 548 mMasterVolume = value; 549 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 550 mPlaybackThreads.valueAt(i)->setMasterVolume(value); 551 552 return NO_ERROR; 553} 554 555status_t AudioFlinger::setMode(int mode) 556{ 557 status_t ret = initCheck(); 558 if (ret != NO_ERROR) { 559 return ret; 560 } 561 562 // check calling permissions 563 if (!settingsAllowed()) { 564 return PERMISSION_DENIED; 565 } 566 if ((mode < 0) || (mode >= AUDIO_MODE_CNT)) { 567 LOGW("Illegal value: setMode(%d)", mode); 568 return BAD_VALUE; 569 } 570 571 { // scope for the lock 572 AutoMutex lock(mHardwareLock); 573 mHardwareStatus = AUDIO_HW_SET_MODE; 574 ret = mPrimaryHardwareDev->set_mode(mPrimaryHardwareDev, mode); 575 mHardwareStatus = AUDIO_HW_IDLE; 576 } 577 578 if (NO_ERROR == ret) { 579 Mutex::Autolock _l(mLock); 580 mMode = mode; 581 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 582 mPlaybackThreads.valueAt(i)->setMode(mode); 583 } 584 585 return ret; 586} 587 588status_t AudioFlinger::setMicMute(bool state) 589{ 590 status_t ret = initCheck(); 591 if (ret != NO_ERROR) { 592 return ret; 593 } 594 595 // check calling permissions 596 if (!settingsAllowed()) { 597 return PERMISSION_DENIED; 598 } 599 600 AutoMutex lock(mHardwareLock); 601 mHardwareStatus = AUDIO_HW_SET_MIC_MUTE; 602 ret = mPrimaryHardwareDev->set_mic_mute(mPrimaryHardwareDev, state); 603 mHardwareStatus = AUDIO_HW_IDLE; 604 return ret; 605} 606 607bool AudioFlinger::getMicMute() const 608{ 609 status_t ret = initCheck(); 610 if (ret != NO_ERROR) { 611 return false; 612 } 613 614 bool state = AUDIO_MODE_INVALID; 615 mHardwareStatus = AUDIO_HW_GET_MIC_MUTE; 616 mPrimaryHardwareDev->get_mic_mute(mPrimaryHardwareDev, &state); 617 mHardwareStatus = AUDIO_HW_IDLE; 618 return state; 619} 620 621status_t AudioFlinger::setMasterMute(bool muted) 622{ 623 // check calling permissions 624 if (!settingsAllowed()) { 625 return PERMISSION_DENIED; 626 } 627 628 Mutex::Autolock _l(mLock); 629 mMasterMute = muted; 630 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 631 mPlaybackThreads.valueAt(i)->setMasterMute(muted); 632 633 return NO_ERROR; 634} 635 636float AudioFlinger::masterVolume() const 637{ 638 return mMasterVolume; 639} 640 641bool AudioFlinger::masterMute() const 642{ 643 return mMasterMute; 644} 645 646status_t AudioFlinger::setStreamVolume(int stream, float value, int output) 647{ 648 // check calling permissions 649 if (!settingsAllowed()) { 650 return PERMISSION_DENIED; 651 } 652 653 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT) { 654 return BAD_VALUE; 655 } 656 657 AutoMutex lock(mLock); 658 PlaybackThread *thread = NULL; 659 if (output) { 660 thread = checkPlaybackThread_l(output); 661 if (thread == NULL) { 662 return BAD_VALUE; 663 } 664 } 665 666 mStreamTypes[stream].volume = value; 667 668 if (thread == NULL) { 669 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) { 670 mPlaybackThreads.valueAt(i)->setStreamVolume(stream, value); 671 } 672 } else { 673 thread->setStreamVolume(stream, value); 674 } 675 676 return NO_ERROR; 677} 678 679status_t AudioFlinger::setStreamMute(int stream, bool muted) 680{ 681 // check calling permissions 682 if (!settingsAllowed()) { 683 return PERMISSION_DENIED; 684 } 685 686 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT || 687 uint32_t(stream) == AUDIO_STREAM_ENFORCED_AUDIBLE) { 688 return BAD_VALUE; 689 } 690 691 AutoMutex lock(mLock); 692 mStreamTypes[stream].mute = muted; 693 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 694 mPlaybackThreads.valueAt(i)->setStreamMute(stream, muted); 695 696 return NO_ERROR; 697} 698 699float AudioFlinger::streamVolume(int stream, int output) const 700{ 701 if (stream < 0 || uint32_t(stream) >= AUDIO_STREAM_CNT) { 702 return 0.0f; 703 } 704 705 AutoMutex lock(mLock); 706 float volume; 707 if (output) { 708 PlaybackThread *thread = checkPlaybackThread_l(output); 709 if (thread == NULL) { 710 return 0.0f; 711 } 712 volume = thread->streamVolume(stream); 713 } else { 714 volume = mStreamTypes[stream].volume; 715 } 716 717 return volume; 718} 719 720bool AudioFlinger::streamMute(int stream) const 721{ 722 if (stream < 0 || stream >= (int)AUDIO_STREAM_CNT) { 723 return true; 724 } 725 726 return mStreamTypes[stream].mute; 727} 728 729status_t AudioFlinger::setParameters(int ioHandle, const String8& keyValuePairs) 730{ 731 status_t result; 732 733 LOGV("setParameters(): io %d, keyvalue %s, tid %d, calling tid %d", 734 ioHandle, keyValuePairs.string(), gettid(), IPCThreadState::self()->getCallingPid()); 735 // check calling permissions 736 if (!settingsAllowed()) { 737 return PERMISSION_DENIED; 738 } 739 740 // ioHandle == 0 means the parameters are global to the audio hardware interface 741 if (ioHandle == 0) { 742 AutoMutex lock(mHardwareLock); 743 mHardwareStatus = AUDIO_SET_PARAMETER; 744 status_t final_result = NO_ERROR; 745 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 746 audio_hw_device_t *dev = mAudioHwDevs[i]; 747 result = dev->set_parameters(dev, keyValuePairs.string()); 748 final_result = result ?: final_result; 749 } 750 mHardwareStatus = AUDIO_HW_IDLE; 751 // disable AEC and NS if the device is a BT SCO headset supporting those pre processings 752 AudioParameter param = AudioParameter(keyValuePairs); 753 String8 value; 754 if (param.get(String8(AUDIO_PARAMETER_KEY_BT_NREC), value) == NO_ERROR) { 755 Mutex::Autolock _l(mLock); 756 bool btNrecIsOff = (value == AUDIO_PARAMETER_VALUE_OFF); 757 if (mBtNrecIsOff != btNrecIsOff) { 758 for (size_t i = 0; i < mRecordThreads.size(); i++) { 759 sp<RecordThread> thread = mRecordThreads.valueAt(i); 760 RecordThread::RecordTrack *track = thread->track(); 761 if (track != NULL) { 762 audio_devices_t device = (audio_devices_t)( 763 thread->device() & AUDIO_DEVICE_IN_ALL); 764 bool suspend = audio_is_bluetooth_sco_device(device) && btNrecIsOff; 765 thread->setEffectSuspended(FX_IID_AEC, 766 suspend, 767 track->sessionId()); 768 thread->setEffectSuspended(FX_IID_NS, 769 suspend, 770 track->sessionId()); 771 } 772 } 773 mBtNrecIsOff = btNrecIsOff; 774 } 775 } 776 return final_result; 777 } 778 779 // hold a strong ref on thread in case closeOutput() or closeInput() is called 780 // and the thread is exited once the lock is released 781 sp<ThreadBase> thread; 782 { 783 Mutex::Autolock _l(mLock); 784 thread = checkPlaybackThread_l(ioHandle); 785 if (thread == NULL) { 786 thread = checkRecordThread_l(ioHandle); 787 } else if (thread.get() == primaryPlaybackThread_l()) { 788 // indicate output device change to all input threads for pre processing 789 AudioParameter param = AudioParameter(keyValuePairs); 790 int value; 791 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 792 for (size_t i = 0; i < mRecordThreads.size(); i++) { 793 mRecordThreads.valueAt(i)->setParameters(keyValuePairs); 794 } 795 } 796 } 797 } 798 if (thread != NULL) { 799 result = thread->setParameters(keyValuePairs); 800 return result; 801 } 802 return BAD_VALUE; 803} 804 805String8 AudioFlinger::getParameters(int ioHandle, const String8& keys) 806{ 807// LOGV("getParameters() io %d, keys %s, tid %d, calling tid %d", 808// ioHandle, keys.string(), gettid(), IPCThreadState::self()->getCallingPid()); 809 810 if (ioHandle == 0) { 811 String8 out_s8; 812 813 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 814 audio_hw_device_t *dev = mAudioHwDevs[i]; 815 char *s = dev->get_parameters(dev, keys.string()); 816 out_s8 += String8(s); 817 free(s); 818 } 819 return out_s8; 820 } 821 822 Mutex::Autolock _l(mLock); 823 824 PlaybackThread *playbackThread = checkPlaybackThread_l(ioHandle); 825 if (playbackThread != NULL) { 826 return playbackThread->getParameters(keys); 827 } 828 RecordThread *recordThread = checkRecordThread_l(ioHandle); 829 if (recordThread != NULL) { 830 return recordThread->getParameters(keys); 831 } 832 return String8(""); 833} 834 835size_t AudioFlinger::getInputBufferSize(uint32_t sampleRate, int format, int channelCount) 836{ 837 status_t ret = initCheck(); 838 if (ret != NO_ERROR) { 839 return 0; 840 } 841 842 return mPrimaryHardwareDev->get_input_buffer_size(mPrimaryHardwareDev, sampleRate, format, channelCount); 843} 844 845unsigned int AudioFlinger::getInputFramesLost(int ioHandle) 846{ 847 if (ioHandle == 0) { 848 return 0; 849 } 850 851 Mutex::Autolock _l(mLock); 852 853 RecordThread *recordThread = checkRecordThread_l(ioHandle); 854 if (recordThread != NULL) { 855 return recordThread->getInputFramesLost(); 856 } 857 return 0; 858} 859 860status_t AudioFlinger::setVoiceVolume(float value) 861{ 862 status_t ret = initCheck(); 863 if (ret != NO_ERROR) { 864 return ret; 865 } 866 867 // check calling permissions 868 if (!settingsAllowed()) { 869 return PERMISSION_DENIED; 870 } 871 872 AutoMutex lock(mHardwareLock); 873 mHardwareStatus = AUDIO_SET_VOICE_VOLUME; 874 ret = mPrimaryHardwareDev->set_voice_volume(mPrimaryHardwareDev, value); 875 mHardwareStatus = AUDIO_HW_IDLE; 876 877 return ret; 878} 879 880status_t AudioFlinger::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output) 881{ 882 status_t status; 883 884 Mutex::Autolock _l(mLock); 885 886 PlaybackThread *playbackThread = checkPlaybackThread_l(output); 887 if (playbackThread != NULL) { 888 return playbackThread->getRenderPosition(halFrames, dspFrames); 889 } 890 891 return BAD_VALUE; 892} 893 894void AudioFlinger::registerClient(const sp<IAudioFlingerClient>& client) 895{ 896 897 Mutex::Autolock _l(mLock); 898 899 int pid = IPCThreadState::self()->getCallingPid(); 900 if (mNotificationClients.indexOfKey(pid) < 0) { 901 sp<NotificationClient> notificationClient = new NotificationClient(this, 902 client, 903 pid); 904 LOGV("registerClient() client %p, pid %d", notificationClient.get(), pid); 905 906 mNotificationClients.add(pid, notificationClient); 907 908 sp<IBinder> binder = client->asBinder(); 909 binder->linkToDeath(notificationClient); 910 911 // the config change is always sent from playback or record threads to avoid deadlock 912 // with AudioSystem::gLock 913 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 914 mPlaybackThreads.valueAt(i)->sendConfigEvent(AudioSystem::OUTPUT_OPENED); 915 } 916 917 for (size_t i = 0; i < mRecordThreads.size(); i++) { 918 mRecordThreads.valueAt(i)->sendConfigEvent(AudioSystem::INPUT_OPENED); 919 } 920 } 921} 922 923void AudioFlinger::removeNotificationClient(pid_t pid) 924{ 925 Mutex::Autolock _l(mLock); 926 927 int index = mNotificationClients.indexOfKey(pid); 928 if (index >= 0) { 929 sp <NotificationClient> client = mNotificationClients.valueFor(pid); 930 LOGV("removeNotificationClient() %p, pid %d", client.get(), pid); 931 mNotificationClients.removeItem(pid); 932 } 933 934 LOGV("%d died, releasing its sessions", pid); 935 int num = mAudioSessionRefs.size(); 936 bool removed = false; 937 for (int i = 0; i< num; i++) { 938 AudioSessionRef *ref = mAudioSessionRefs.itemAt(i); 939 LOGV(" pid %d @ %d", ref->pid, i); 940 if (ref->pid == pid) { 941 LOGV(" removing entry for pid %d session %d", pid, ref->sessionid); 942 mAudioSessionRefs.removeAt(i); 943 delete ref; 944 removed = true; 945 i--; 946 num--; 947 } 948 } 949 if (removed) { 950 purgeStaleEffects_l(); 951 } 952} 953 954// audioConfigChanged_l() must be called with AudioFlinger::mLock held 955void AudioFlinger::audioConfigChanged_l(int event, int ioHandle, void *param2) 956{ 957 size_t size = mNotificationClients.size(); 958 for (size_t i = 0; i < size; i++) { 959 mNotificationClients.valueAt(i)->client()->ioConfigChanged(event, ioHandle, param2); 960 } 961} 962 963// removeClient_l() must be called with AudioFlinger::mLock held 964void AudioFlinger::removeClient_l(pid_t pid) 965{ 966 LOGV("removeClient_l() pid %d, tid %d, calling tid %d", pid, gettid(), IPCThreadState::self()->getCallingPid()); 967 mClients.removeItem(pid); 968} 969 970 971// ---------------------------------------------------------------------------- 972 973AudioFlinger::ThreadBase::ThreadBase(const sp<AudioFlinger>& audioFlinger, int id, uint32_t device) 974 : Thread(false), 975 mAudioFlinger(audioFlinger), mSampleRate(0), mFrameCount(0), mChannelCount(0), 976 mFrameSize(1), mFormat(0), mStandby(false), mId(id), mExiting(false), 977 mDevice(device) 978{ 979 mDeathRecipient = new PMDeathRecipient(this); 980} 981 982AudioFlinger::ThreadBase::~ThreadBase() 983{ 984 mParamCond.broadcast(); 985 mNewParameters.clear(); 986 // do not lock the mutex in destructor 987 releaseWakeLock_l(); 988 if (mPowerManager != 0) { 989 sp<IBinder> binder = mPowerManager->asBinder(); 990 binder->unlinkToDeath(mDeathRecipient); 991 } 992} 993 994void AudioFlinger::ThreadBase::exit() 995{ 996 // keep a strong ref on ourself so that we wont get 997 // destroyed in the middle of requestExitAndWait() 998 sp <ThreadBase> strongMe = this; 999 1000 LOGV("ThreadBase::exit"); 1001 { 1002 AutoMutex lock(&mLock); 1003 mExiting = true; 1004 requestExit(); 1005 mWaitWorkCV.signal(); 1006 } 1007 requestExitAndWait(); 1008} 1009 1010uint32_t AudioFlinger::ThreadBase::sampleRate() const 1011{ 1012 return mSampleRate; 1013} 1014 1015int AudioFlinger::ThreadBase::channelCount() const 1016{ 1017 return (int)mChannelCount; 1018} 1019 1020uint32_t AudioFlinger::ThreadBase::format() const 1021{ 1022 return mFormat; 1023} 1024 1025size_t AudioFlinger::ThreadBase::frameCount() const 1026{ 1027 return mFrameCount; 1028} 1029 1030status_t AudioFlinger::ThreadBase::setParameters(const String8& keyValuePairs) 1031{ 1032 status_t status; 1033 1034 LOGV("ThreadBase::setParameters() %s", keyValuePairs.string()); 1035 Mutex::Autolock _l(mLock); 1036 1037 mNewParameters.add(keyValuePairs); 1038 mWaitWorkCV.signal(); 1039 // wait condition with timeout in case the thread loop has exited 1040 // before the request could be processed 1041 if (mParamCond.waitRelative(mLock, kSetParametersTimeout) == NO_ERROR) { 1042 status = mParamStatus; 1043 mWaitWorkCV.signal(); 1044 } else { 1045 status = TIMED_OUT; 1046 } 1047 return status; 1048} 1049 1050void AudioFlinger::ThreadBase::sendConfigEvent(int event, int param) 1051{ 1052 Mutex::Autolock _l(mLock); 1053 sendConfigEvent_l(event, param); 1054} 1055 1056// sendConfigEvent_l() must be called with ThreadBase::mLock held 1057void AudioFlinger::ThreadBase::sendConfigEvent_l(int event, int param) 1058{ 1059 ConfigEvent *configEvent = new ConfigEvent(); 1060 configEvent->mEvent = event; 1061 configEvent->mParam = param; 1062 mConfigEvents.add(configEvent); 1063 LOGV("sendConfigEvent() num events %d event %d, param %d", mConfigEvents.size(), event, param); 1064 mWaitWorkCV.signal(); 1065} 1066 1067void AudioFlinger::ThreadBase::processConfigEvents() 1068{ 1069 mLock.lock(); 1070 while(!mConfigEvents.isEmpty()) { 1071 LOGV("processConfigEvents() remaining events %d", mConfigEvents.size()); 1072 ConfigEvent *configEvent = mConfigEvents[0]; 1073 mConfigEvents.removeAt(0); 1074 // release mLock before locking AudioFlinger mLock: lock order is always 1075 // AudioFlinger then ThreadBase to avoid cross deadlock 1076 mLock.unlock(); 1077 mAudioFlinger->mLock.lock(); 1078 audioConfigChanged_l(configEvent->mEvent, configEvent->mParam); 1079 mAudioFlinger->mLock.unlock(); 1080 delete configEvent; 1081 mLock.lock(); 1082 } 1083 mLock.unlock(); 1084} 1085 1086status_t AudioFlinger::ThreadBase::dumpBase(int fd, const Vector<String16>& args) 1087{ 1088 const size_t SIZE = 256; 1089 char buffer[SIZE]; 1090 String8 result; 1091 1092 bool locked = tryLock(mLock); 1093 if (!locked) { 1094 snprintf(buffer, SIZE, "thread %p maybe dead locked\n", this); 1095 write(fd, buffer, strlen(buffer)); 1096 } 1097 1098 snprintf(buffer, SIZE, "standby: %d\n", mStandby); 1099 result.append(buffer); 1100 snprintf(buffer, SIZE, "Sample rate: %d\n", mSampleRate); 1101 result.append(buffer); 1102 snprintf(buffer, SIZE, "Frame count: %d\n", mFrameCount); 1103 result.append(buffer); 1104 snprintf(buffer, SIZE, "Channel Count: %d\n", mChannelCount); 1105 result.append(buffer); 1106 snprintf(buffer, SIZE, "Channel Mask: 0x%08x\n", mChannelMask); 1107 result.append(buffer); 1108 snprintf(buffer, SIZE, "Format: %d\n", mFormat); 1109 result.append(buffer); 1110 snprintf(buffer, SIZE, "Frame size: %d\n", mFrameSize); 1111 result.append(buffer); 1112 1113 snprintf(buffer, SIZE, "\nPending setParameters commands: \n"); 1114 result.append(buffer); 1115 result.append(" Index Command"); 1116 for (size_t i = 0; i < mNewParameters.size(); ++i) { 1117 snprintf(buffer, SIZE, "\n %02d ", i); 1118 result.append(buffer); 1119 result.append(mNewParameters[i]); 1120 } 1121 1122 snprintf(buffer, SIZE, "\n\nPending config events: \n"); 1123 result.append(buffer); 1124 snprintf(buffer, SIZE, " Index event param\n"); 1125 result.append(buffer); 1126 for (size_t i = 0; i < mConfigEvents.size(); i++) { 1127 snprintf(buffer, SIZE, " %02d %02d %d\n", i, mConfigEvents[i]->mEvent, mConfigEvents[i]->mParam); 1128 result.append(buffer); 1129 } 1130 result.append("\n"); 1131 1132 write(fd, result.string(), result.size()); 1133 1134 if (locked) { 1135 mLock.unlock(); 1136 } 1137 return NO_ERROR; 1138} 1139 1140status_t AudioFlinger::ThreadBase::dumpEffectChains(int fd, const Vector<String16>& args) 1141{ 1142 const size_t SIZE = 256; 1143 char buffer[SIZE]; 1144 String8 result; 1145 1146 snprintf(buffer, SIZE, "\n- %d Effect Chains:\n", mEffectChains.size()); 1147 write(fd, buffer, strlen(buffer)); 1148 1149 for (size_t i = 0; i < mEffectChains.size(); ++i) { 1150 sp<EffectChain> chain = mEffectChains[i]; 1151 if (chain != 0) { 1152 chain->dump(fd, args); 1153 } 1154 } 1155 return NO_ERROR; 1156} 1157 1158void AudioFlinger::ThreadBase::acquireWakeLock() 1159{ 1160 Mutex::Autolock _l(mLock); 1161 acquireWakeLock_l(); 1162} 1163 1164void AudioFlinger::ThreadBase::acquireWakeLock_l() 1165{ 1166 if (mPowerManager == 0) { 1167 // use checkService() to avoid blocking if power service is not up yet 1168 sp<IBinder> binder = 1169 defaultServiceManager()->checkService(String16("power")); 1170 if (binder == 0) { 1171 LOGW("Thread %s cannot connect to the power manager service", mName); 1172 } else { 1173 mPowerManager = interface_cast<IPowerManager>(binder); 1174 binder->linkToDeath(mDeathRecipient); 1175 } 1176 } 1177 if (mPowerManager != 0) { 1178 sp<IBinder> binder = new BBinder(); 1179 status_t status = mPowerManager->acquireWakeLock(POWERMANAGER_PARTIAL_WAKE_LOCK, 1180 binder, 1181 String16(mName)); 1182 if (status == NO_ERROR) { 1183 mWakeLockToken = binder; 1184 } 1185 LOGV("acquireWakeLock_l() %s status %d", mName, status); 1186 } 1187} 1188 1189void AudioFlinger::ThreadBase::releaseWakeLock() 1190{ 1191 Mutex::Autolock _l(mLock); 1192 releaseWakeLock_l(); 1193} 1194 1195void AudioFlinger::ThreadBase::releaseWakeLock_l() 1196{ 1197 if (mWakeLockToken != 0) { 1198 LOGV("releaseWakeLock_l() %s", mName); 1199 if (mPowerManager != 0) { 1200 mPowerManager->releaseWakeLock(mWakeLockToken, 0); 1201 } 1202 mWakeLockToken.clear(); 1203 } 1204} 1205 1206void AudioFlinger::ThreadBase::clearPowerManager() 1207{ 1208 Mutex::Autolock _l(mLock); 1209 releaseWakeLock_l(); 1210 mPowerManager.clear(); 1211} 1212 1213void AudioFlinger::ThreadBase::PMDeathRecipient::binderDied(const wp<IBinder>& who) 1214{ 1215 sp<ThreadBase> thread = mThread.promote(); 1216 if (thread != 0) { 1217 thread->clearPowerManager(); 1218 } 1219 LOGW("power manager service died !!!"); 1220} 1221 1222void AudioFlinger::ThreadBase::setEffectSuspended( 1223 const effect_uuid_t *type, bool suspend, int sessionId) 1224{ 1225 Mutex::Autolock _l(mLock); 1226 setEffectSuspended_l(type, suspend, sessionId); 1227} 1228 1229void AudioFlinger::ThreadBase::setEffectSuspended_l( 1230 const effect_uuid_t *type, bool suspend, int sessionId) 1231{ 1232 sp<EffectChain> chain; 1233 chain = getEffectChain_l(sessionId); 1234 if (chain != 0) { 1235 if (type != NULL) { 1236 chain->setEffectSuspended_l(type, suspend); 1237 } else { 1238 chain->setEffectSuspendedAll_l(suspend); 1239 } 1240 } 1241 1242 updateSuspendedSessions_l(type, suspend, sessionId); 1243} 1244 1245void AudioFlinger::ThreadBase::checkSuspendOnAddEffectChain_l(const sp<EffectChain>& chain) 1246{ 1247 int index = mSuspendedSessions.indexOfKey(chain->sessionId()); 1248 if (index < 0) { 1249 return; 1250 } 1251 1252 KeyedVector <int, sp<SuspendedSessionDesc> > sessionEffects = 1253 mSuspendedSessions.editValueAt(index); 1254 1255 for (size_t i = 0; i < sessionEffects.size(); i++) { 1256 sp <SuspendedSessionDesc> desc = sessionEffects.valueAt(i); 1257 for (int j = 0; j < desc->mRefCount; j++) { 1258 if (sessionEffects.keyAt(i) == EffectChain::kKeyForSuspendAll) { 1259 chain->setEffectSuspendedAll_l(true); 1260 } else { 1261 LOGV("checkSuspendOnAddEffectChain_l() suspending effects %08x", 1262 desc->mType.timeLow); 1263 chain->setEffectSuspended_l(&desc->mType, true); 1264 } 1265 } 1266 } 1267} 1268 1269void AudioFlinger::ThreadBase::updateSuspendedSessions_l(const effect_uuid_t *type, 1270 bool suspend, 1271 int sessionId) 1272{ 1273 int index = mSuspendedSessions.indexOfKey(sessionId); 1274 1275 KeyedVector <int, sp<SuspendedSessionDesc> > sessionEffects; 1276 1277 if (suspend) { 1278 if (index >= 0) { 1279 sessionEffects = mSuspendedSessions.editValueAt(index); 1280 } else { 1281 mSuspendedSessions.add(sessionId, sessionEffects); 1282 } 1283 } else { 1284 if (index < 0) { 1285 return; 1286 } 1287 sessionEffects = mSuspendedSessions.editValueAt(index); 1288 } 1289 1290 1291 int key = EffectChain::kKeyForSuspendAll; 1292 if (type != NULL) { 1293 key = type->timeLow; 1294 } 1295 index = sessionEffects.indexOfKey(key); 1296 1297 sp <SuspendedSessionDesc> desc; 1298 if (suspend) { 1299 if (index >= 0) { 1300 desc = sessionEffects.valueAt(index); 1301 } else { 1302 desc = new SuspendedSessionDesc(); 1303 if (type != NULL) { 1304 memcpy(&desc->mType, type, sizeof(effect_uuid_t)); 1305 } 1306 sessionEffects.add(key, desc); 1307 LOGV("updateSuspendedSessions_l() suspend adding effect %08x", key); 1308 } 1309 desc->mRefCount++; 1310 } else { 1311 if (index < 0) { 1312 return; 1313 } 1314 desc = sessionEffects.valueAt(index); 1315 if (--desc->mRefCount == 0) { 1316 LOGV("updateSuspendedSessions_l() restore removing effect %08x", key); 1317 sessionEffects.removeItemsAt(index); 1318 if (sessionEffects.isEmpty()) { 1319 LOGV("updateSuspendedSessions_l() restore removing session %d", 1320 sessionId); 1321 mSuspendedSessions.removeItem(sessionId); 1322 } 1323 } 1324 } 1325 if (!sessionEffects.isEmpty()) { 1326 mSuspendedSessions.replaceValueFor(sessionId, sessionEffects); 1327 } 1328} 1329 1330void AudioFlinger::ThreadBase::checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 1331 bool enabled, 1332 int sessionId) 1333{ 1334 Mutex::Autolock _l(mLock); 1335 1336 if (mType != RECORD) { 1337 // suspend all effects in AUDIO_SESSION_OUTPUT_MIX when enabling any effect on 1338 // another session. This gives the priority to well behaved effect control panels 1339 // and applications not using global effects. 1340 if (sessionId != AUDIO_SESSION_OUTPUT_MIX) { 1341 setEffectSuspended_l(NULL, enabled, AUDIO_SESSION_OUTPUT_MIX); 1342 } 1343 } 1344 1345 sp<EffectChain> chain = getEffectChain_l(sessionId); 1346 if (chain != 0) { 1347 chain->checkSuspendOnEffectEnabled(effect, enabled); 1348 } 1349} 1350 1351// ---------------------------------------------------------------------------- 1352 1353AudioFlinger::PlaybackThread::PlaybackThread(const sp<AudioFlinger>& audioFlinger, 1354 AudioStreamOut* output, 1355 int id, 1356 uint32_t device) 1357 : ThreadBase(audioFlinger, id, device), 1358 mMixBuffer(0), mSuspended(0), mBytesWritten(0), mOutput(output), 1359 mLastWriteTime(0), mNumWrites(0), mNumDelayedWrites(0), mInWrite(false) 1360{ 1361 snprintf(mName, kNameLength, "AudioOut_%d", id); 1362 1363 readOutputParameters(); 1364 1365 mMasterVolume = mAudioFlinger->masterVolume(); 1366 mMasterMute = mAudioFlinger->masterMute(); 1367 1368 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 1369 mStreamTypes[stream].volume = mAudioFlinger->streamVolumeInternal(stream); 1370 mStreamTypes[stream].mute = mAudioFlinger->streamMute(stream); 1371 mStreamTypes[stream].valid = true; 1372 } 1373} 1374 1375AudioFlinger::PlaybackThread::~PlaybackThread() 1376{ 1377 delete [] mMixBuffer; 1378} 1379 1380status_t AudioFlinger::PlaybackThread::dump(int fd, const Vector<String16>& args) 1381{ 1382 dumpInternals(fd, args); 1383 dumpTracks(fd, args); 1384 dumpEffectChains(fd, args); 1385 return NO_ERROR; 1386} 1387 1388status_t AudioFlinger::PlaybackThread::dumpTracks(int fd, const Vector<String16>& args) 1389{ 1390 const size_t SIZE = 256; 1391 char buffer[SIZE]; 1392 String8 result; 1393 1394 snprintf(buffer, SIZE, "Output thread %p tracks\n", this); 1395 result.append(buffer); 1396 result.append(" Name Clien Typ Fmt Chn mask Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 1397 for (size_t i = 0; i < mTracks.size(); ++i) { 1398 sp<Track> track = mTracks[i]; 1399 if (track != 0) { 1400 track->dump(buffer, SIZE); 1401 result.append(buffer); 1402 } 1403 } 1404 1405 snprintf(buffer, SIZE, "Output thread %p active tracks\n", this); 1406 result.append(buffer); 1407 result.append(" Name Clien Typ Fmt Chn mask Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 1408 for (size_t i = 0; i < mActiveTracks.size(); ++i) { 1409 wp<Track> wTrack = mActiveTracks[i]; 1410 if (wTrack != 0) { 1411 sp<Track> track = wTrack.promote(); 1412 if (track != 0) { 1413 track->dump(buffer, SIZE); 1414 result.append(buffer); 1415 } 1416 } 1417 } 1418 write(fd, result.string(), result.size()); 1419 return NO_ERROR; 1420} 1421 1422status_t AudioFlinger::PlaybackThread::dumpInternals(int fd, const Vector<String16>& args) 1423{ 1424 const size_t SIZE = 256; 1425 char buffer[SIZE]; 1426 String8 result; 1427 1428 snprintf(buffer, SIZE, "\nOutput thread %p internals\n", this); 1429 result.append(buffer); 1430 snprintf(buffer, SIZE, "last write occurred (msecs): %llu\n", ns2ms(systemTime() - mLastWriteTime)); 1431 result.append(buffer); 1432 snprintf(buffer, SIZE, "total writes: %d\n", mNumWrites); 1433 result.append(buffer); 1434 snprintf(buffer, SIZE, "delayed writes: %d\n", mNumDelayedWrites); 1435 result.append(buffer); 1436 snprintf(buffer, SIZE, "blocked in write: %d\n", mInWrite); 1437 result.append(buffer); 1438 snprintf(buffer, SIZE, "suspend count: %d\n", mSuspended); 1439 result.append(buffer); 1440 snprintf(buffer, SIZE, "mix buffer : %p\n", mMixBuffer); 1441 result.append(buffer); 1442 write(fd, result.string(), result.size()); 1443 1444 dumpBase(fd, args); 1445 1446 return NO_ERROR; 1447} 1448 1449// Thread virtuals 1450status_t AudioFlinger::PlaybackThread::readyToRun() 1451{ 1452 status_t status = initCheck(); 1453 if (status == NO_ERROR) { 1454 LOGI("AudioFlinger's thread %p ready to run", this); 1455 } else { 1456 LOGE("No working audio driver found."); 1457 } 1458 return status; 1459} 1460 1461void AudioFlinger::PlaybackThread::onFirstRef() 1462{ 1463 run(mName, ANDROID_PRIORITY_URGENT_AUDIO); 1464} 1465 1466// PlaybackThread::createTrack_l() must be called with AudioFlinger::mLock held 1467sp<AudioFlinger::PlaybackThread::Track> AudioFlinger::PlaybackThread::createTrack_l( 1468 const sp<AudioFlinger::Client>& client, 1469 int streamType, 1470 uint32_t sampleRate, 1471 uint32_t format, 1472 uint32_t channelMask, 1473 int frameCount, 1474 const sp<IMemory>& sharedBuffer, 1475 int sessionId, 1476 status_t *status) 1477{ 1478 sp<Track> track; 1479 status_t lStatus; 1480 1481 if (mType == DIRECT) { 1482 if ((format & AUDIO_FORMAT_MAIN_MASK) == AUDIO_FORMAT_PCM) { 1483 if (sampleRate != mSampleRate || format != mFormat || channelMask != mChannelMask) { 1484 LOGE("createTrack_l() Bad parameter: sampleRate %d format %d, channelMask 0x%08x \"" 1485 "for output %p with format %d", 1486 sampleRate, format, channelMask, mOutput, mFormat); 1487 lStatus = BAD_VALUE; 1488 goto Exit; 1489 } 1490 } 1491 } else { 1492 // Resampler implementation limits input sampling rate to 2 x output sampling rate. 1493 if (sampleRate > mSampleRate*2) { 1494 LOGE("Sample rate out of range: %d mSampleRate %d", sampleRate, mSampleRate); 1495 lStatus = BAD_VALUE; 1496 goto Exit; 1497 } 1498 } 1499 1500 lStatus = initCheck(); 1501 if (lStatus != NO_ERROR) { 1502 LOGE("Audio driver not initialized."); 1503 goto Exit; 1504 } 1505 1506 { // scope for mLock 1507 Mutex::Autolock _l(mLock); 1508 1509 // all tracks in same audio session must share the same routing strategy otherwise 1510 // conflicts will happen when tracks are moved from one output to another by audio policy 1511 // manager 1512 uint32_t strategy = 1513 AudioSystem::getStrategyForStream((audio_stream_type_t)streamType); 1514 for (size_t i = 0; i < mTracks.size(); ++i) { 1515 sp<Track> t = mTracks[i]; 1516 if (t != 0) { 1517 if (sessionId == t->sessionId() && 1518 strategy != AudioSystem::getStrategyForStream((audio_stream_type_t)t->type())) { 1519 lStatus = BAD_VALUE; 1520 goto Exit; 1521 } 1522 } 1523 } 1524 1525 track = new Track(this, client, streamType, sampleRate, format, 1526 channelMask, frameCount, sharedBuffer, sessionId); 1527 if (track->getCblk() == NULL || track->name() < 0) { 1528 lStatus = NO_MEMORY; 1529 goto Exit; 1530 } 1531 mTracks.add(track); 1532 1533 sp<EffectChain> chain = getEffectChain_l(sessionId); 1534 if (chain != 0) { 1535 LOGV("createTrack_l() setting main buffer %p", chain->inBuffer()); 1536 track->setMainBuffer(chain->inBuffer()); 1537 chain->setStrategy(AudioSystem::getStrategyForStream((audio_stream_type_t)track->type())); 1538 chain->incTrackCnt(); 1539 } 1540 1541 // invalidate track immediately if the stream type was moved to another thread since 1542 // createTrack() was called by the client process. 1543 if (!mStreamTypes[streamType].valid) { 1544 LOGW("createTrack_l() on thread %p: invalidating track on stream %d", 1545 this, streamType); 1546 android_atomic_or(CBLK_INVALID_ON, &track->mCblk->flags); 1547 } 1548 } 1549 lStatus = NO_ERROR; 1550 1551Exit: 1552 if(status) { 1553 *status = lStatus; 1554 } 1555 return track; 1556} 1557 1558uint32_t AudioFlinger::PlaybackThread::latency() const 1559{ 1560 Mutex::Autolock _l(mLock); 1561 if (initCheck() == NO_ERROR) { 1562 return mOutput->stream->get_latency(mOutput->stream); 1563 } else { 1564 return 0; 1565 } 1566} 1567 1568status_t AudioFlinger::PlaybackThread::setMasterVolume(float value) 1569{ 1570 mMasterVolume = value; 1571 return NO_ERROR; 1572} 1573 1574status_t AudioFlinger::PlaybackThread::setMasterMute(bool muted) 1575{ 1576 mMasterMute = muted; 1577 return NO_ERROR; 1578} 1579 1580float AudioFlinger::PlaybackThread::masterVolume() const 1581{ 1582 return mMasterVolume; 1583} 1584 1585bool AudioFlinger::PlaybackThread::masterMute() const 1586{ 1587 return mMasterMute; 1588} 1589 1590status_t AudioFlinger::PlaybackThread::setStreamVolume(int stream, float value) 1591{ 1592 mStreamTypes[stream].volume = value; 1593 return NO_ERROR; 1594} 1595 1596status_t AudioFlinger::PlaybackThread::setStreamMute(int stream, bool muted) 1597{ 1598 mStreamTypes[stream].mute = muted; 1599 return NO_ERROR; 1600} 1601 1602float AudioFlinger::PlaybackThread::streamVolume(int stream) const 1603{ 1604 return mStreamTypes[stream].volume; 1605} 1606 1607bool AudioFlinger::PlaybackThread::streamMute(int stream) const 1608{ 1609 return mStreamTypes[stream].mute; 1610} 1611 1612// addTrack_l() must be called with ThreadBase::mLock held 1613status_t AudioFlinger::PlaybackThread::addTrack_l(const sp<Track>& track) 1614{ 1615 status_t status = ALREADY_EXISTS; 1616 1617 // set retry count for buffer fill 1618 track->mRetryCount = kMaxTrackStartupRetries; 1619 if (mActiveTracks.indexOf(track) < 0) { 1620 // the track is newly added, make sure it fills up all its 1621 // buffers before playing. This is to ensure the client will 1622 // effectively get the latency it requested. 1623 track->mFillingUpStatus = Track::FS_FILLING; 1624 track->mResetDone = false; 1625 mActiveTracks.add(track); 1626 if (track->mainBuffer() != mMixBuffer) { 1627 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1628 if (chain != 0) { 1629 LOGV("addTrack_l() starting track on chain %p for session %d", chain.get(), track->sessionId()); 1630 chain->incActiveTrackCnt(); 1631 } 1632 } 1633 1634 status = NO_ERROR; 1635 } 1636 1637 LOGV("mWaitWorkCV.broadcast"); 1638 mWaitWorkCV.broadcast(); 1639 1640 return status; 1641} 1642 1643// destroyTrack_l() must be called with ThreadBase::mLock held 1644void AudioFlinger::PlaybackThread::destroyTrack_l(const sp<Track>& track) 1645{ 1646 track->mState = TrackBase::TERMINATED; 1647 if (mActiveTracks.indexOf(track) < 0) { 1648 removeTrack_l(track); 1649 } 1650} 1651 1652void AudioFlinger::PlaybackThread::removeTrack_l(const sp<Track>& track) 1653{ 1654 mTracks.remove(track); 1655 deleteTrackName_l(track->name()); 1656 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1657 if (chain != 0) { 1658 chain->decTrackCnt(); 1659 } 1660} 1661 1662String8 AudioFlinger::PlaybackThread::getParameters(const String8& keys) 1663{ 1664 String8 out_s8 = String8(""); 1665 char *s; 1666 1667 Mutex::Autolock _l(mLock); 1668 if (initCheck() != NO_ERROR) { 1669 return out_s8; 1670 } 1671 1672 s = mOutput->stream->common.get_parameters(&mOutput->stream->common, keys.string()); 1673 out_s8 = String8(s); 1674 free(s); 1675 return out_s8; 1676} 1677 1678// audioConfigChanged_l() must be called with AudioFlinger::mLock held 1679void AudioFlinger::PlaybackThread::audioConfigChanged_l(int event, int param) { 1680 AudioSystem::OutputDescriptor desc; 1681 void *param2 = 0; 1682 1683 LOGV("PlaybackThread::audioConfigChanged_l, thread %p, event %d, param %d", this, event, param); 1684 1685 switch (event) { 1686 case AudioSystem::OUTPUT_OPENED: 1687 case AudioSystem::OUTPUT_CONFIG_CHANGED: 1688 desc.channels = mChannelMask; 1689 desc.samplingRate = mSampleRate; 1690 desc.format = mFormat; 1691 desc.frameCount = mFrameCount; 1692 desc.latency = latency(); 1693 param2 = &desc; 1694 break; 1695 1696 case AudioSystem::STREAM_CONFIG_CHANGED: 1697 param2 = ¶m; 1698 case AudioSystem::OUTPUT_CLOSED: 1699 default: 1700 break; 1701 } 1702 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 1703} 1704 1705void AudioFlinger::PlaybackThread::readOutputParameters() 1706{ 1707 mSampleRate = mOutput->stream->common.get_sample_rate(&mOutput->stream->common); 1708 mChannelMask = mOutput->stream->common.get_channels(&mOutput->stream->common); 1709 mChannelCount = (uint16_t)popcount(mChannelMask); 1710 mFormat = mOutput->stream->common.get_format(&mOutput->stream->common); 1711 mFrameSize = (uint16_t)audio_stream_frame_size(&mOutput->stream->common); 1712 mFrameCount = mOutput->stream->common.get_buffer_size(&mOutput->stream->common) / mFrameSize; 1713 1714 // FIXME - Current mixer implementation only supports stereo output: Always 1715 // Allocate a stereo buffer even if HW output is mono. 1716 if (mMixBuffer != NULL) delete[] mMixBuffer; 1717 mMixBuffer = new int16_t[mFrameCount * 2]; 1718 memset(mMixBuffer, 0, mFrameCount * 2 * sizeof(int16_t)); 1719 1720 // force reconfiguration of effect chains and engines to take new buffer size and audio 1721 // parameters into account 1722 // Note that mLock is not held when readOutputParameters() is called from the constructor 1723 // but in this case nothing is done below as no audio sessions have effect yet so it doesn't 1724 // matter. 1725 // create a copy of mEffectChains as calling moveEffectChain_l() can reorder some effect chains 1726 Vector< sp<EffectChain> > effectChains = mEffectChains; 1727 for (size_t i = 0; i < effectChains.size(); i ++) { 1728 mAudioFlinger->moveEffectChain_l(effectChains[i]->sessionId(), this, this, false); 1729 } 1730} 1731 1732status_t AudioFlinger::PlaybackThread::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames) 1733{ 1734 if (halFrames == 0 || dspFrames == 0) { 1735 return BAD_VALUE; 1736 } 1737 Mutex::Autolock _l(mLock); 1738 if (initCheck() != NO_ERROR) { 1739 return INVALID_OPERATION; 1740 } 1741 *halFrames = mBytesWritten / audio_stream_frame_size(&mOutput->stream->common); 1742 1743 return mOutput->stream->get_render_position(mOutput->stream, dspFrames); 1744} 1745 1746uint32_t AudioFlinger::PlaybackThread::hasAudioSession(int sessionId) 1747{ 1748 Mutex::Autolock _l(mLock); 1749 uint32_t result = 0; 1750 if (getEffectChain_l(sessionId) != 0) { 1751 result = EFFECT_SESSION; 1752 } 1753 1754 for (size_t i = 0; i < mTracks.size(); ++i) { 1755 sp<Track> track = mTracks[i]; 1756 if (sessionId == track->sessionId() && 1757 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1758 result |= TRACK_SESSION; 1759 break; 1760 } 1761 } 1762 1763 return result; 1764} 1765 1766uint32_t AudioFlinger::PlaybackThread::getStrategyForSession_l(int sessionId) 1767{ 1768 // session AUDIO_SESSION_OUTPUT_MIX is placed in same strategy as MUSIC stream so that 1769 // it is moved to correct output by audio policy manager when A2DP is connected or disconnected 1770 if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 1771 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1772 } 1773 for (size_t i = 0; i < mTracks.size(); i++) { 1774 sp<Track> track = mTracks[i]; 1775 if (sessionId == track->sessionId() && 1776 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1777 return AudioSystem::getStrategyForStream((audio_stream_type_t) track->type()); 1778 } 1779 } 1780 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1781} 1782 1783 1784AudioFlinger::AudioStreamOut* AudioFlinger::PlaybackThread::getOutput() 1785{ 1786 Mutex::Autolock _l(mLock); 1787 return mOutput; 1788} 1789 1790AudioFlinger::AudioStreamOut* AudioFlinger::PlaybackThread::clearOutput() 1791{ 1792 Mutex::Autolock _l(mLock); 1793 AudioStreamOut *output = mOutput; 1794 mOutput = NULL; 1795 return output; 1796} 1797 1798// this method must always be called either with ThreadBase mLock held or inside the thread loop 1799audio_stream_t* AudioFlinger::PlaybackThread::stream() 1800{ 1801 if (mOutput == NULL) { 1802 return NULL; 1803 } 1804 return &mOutput->stream->common; 1805} 1806 1807// ---------------------------------------------------------------------------- 1808 1809AudioFlinger::MixerThread::MixerThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 1810 : PlaybackThread(audioFlinger, output, id, device), 1811 mAudioMixer(0) 1812{ 1813 mType = ThreadBase::MIXER; 1814 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 1815 1816 // FIXME - Current mixer implementation only supports stereo output 1817 if (mChannelCount == 1) { 1818 LOGE("Invalid audio hardware channel count"); 1819 } 1820} 1821 1822AudioFlinger::MixerThread::~MixerThread() 1823{ 1824 delete mAudioMixer; 1825} 1826 1827bool AudioFlinger::MixerThread::threadLoop() 1828{ 1829 Vector< sp<Track> > tracksToRemove; 1830 uint32_t mixerStatus = MIXER_IDLE; 1831 nsecs_t standbyTime = systemTime(); 1832 size_t mixBufferSize = mFrameCount * mFrameSize; 1833 // FIXME: Relaxed timing because of a certain device that can't meet latency 1834 // Should be reduced to 2x after the vendor fixes the driver issue 1835 nsecs_t maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1836 nsecs_t lastWarning = 0; 1837 bool longStandbyExit = false; 1838 uint32_t activeSleepTime = activeSleepTimeUs(); 1839 uint32_t idleSleepTime = idleSleepTimeUs(); 1840 uint32_t sleepTime = idleSleepTime; 1841 Vector< sp<EffectChain> > effectChains; 1842#ifdef DEBUG_CPU_USAGE 1843 ThreadCpuUsage cpu; 1844 const CentralTendencyStatistics& stats = cpu.statistics(); 1845#endif 1846 1847 acquireWakeLock(); 1848 1849 while (!exitPending()) 1850 { 1851#ifdef DEBUG_CPU_USAGE 1852 cpu.sampleAndEnable(); 1853 unsigned n = stats.n(); 1854 // cpu.elapsed() is expensive, so don't call it every loop 1855 if ((n & 127) == 1) { 1856 long long elapsed = cpu.elapsed(); 1857 if (elapsed >= DEBUG_CPU_USAGE * 1000000000LL) { 1858 double perLoop = elapsed / (double) n; 1859 double perLoop100 = perLoop * 0.01; 1860 double mean = stats.mean(); 1861 double stddev = stats.stddev(); 1862 double minimum = stats.minimum(); 1863 double maximum = stats.maximum(); 1864 cpu.resetStatistics(); 1865 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", 1866 elapsed * .000000001, n, perLoop * .000001, 1867 mean * .001, 1868 stddev * .001, 1869 minimum * .001, 1870 maximum * .001, 1871 mean / perLoop100, 1872 stddev / perLoop100, 1873 minimum / perLoop100, 1874 maximum / perLoop100); 1875 } 1876 } 1877#endif 1878 processConfigEvents(); 1879 1880 mixerStatus = MIXER_IDLE; 1881 { // scope for mLock 1882 1883 Mutex::Autolock _l(mLock); 1884 1885 if (checkForNewParameters_l()) { 1886 mixBufferSize = mFrameCount * mFrameSize; 1887 // FIXME: Relaxed timing because of a certain device that can't meet latency 1888 // Should be reduced to 2x after the vendor fixes the driver issue 1889 maxPeriod = seconds(mFrameCount) / mSampleRate * 3; 1890 activeSleepTime = activeSleepTimeUs(); 1891 idleSleepTime = idleSleepTimeUs(); 1892 } 1893 1894 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 1895 1896 // put audio hardware into standby after short delay 1897 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 1898 mSuspended) { 1899 if (!mStandby) { 1900 LOGV("Audio hardware entering standby, mixer %p, mSuspended %d\n", this, mSuspended); 1901 mOutput->stream->common.standby(&mOutput->stream->common); 1902 mStandby = true; 1903 mBytesWritten = 0; 1904 } 1905 1906 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 1907 // we're about to wait, flush the binder command buffer 1908 IPCThreadState::self()->flushCommands(); 1909 1910 if (exitPending()) break; 1911 1912 releaseWakeLock_l(); 1913 // wait until we have something to do... 1914 LOGV("MixerThread %p TID %d going to sleep\n", this, gettid()); 1915 mWaitWorkCV.wait(mLock); 1916 LOGV("MixerThread %p TID %d waking up\n", this, gettid()); 1917 acquireWakeLock_l(); 1918 1919 if (mMasterMute == false) { 1920 char value[PROPERTY_VALUE_MAX]; 1921 property_get("ro.audio.silent", value, "0"); 1922 if (atoi(value)) { 1923 LOGD("Silence is golden"); 1924 setMasterMute(true); 1925 } 1926 } 1927 1928 standbyTime = systemTime() + kStandbyTimeInNsecs; 1929 sleepTime = idleSleepTime; 1930 continue; 1931 } 1932 } 1933 1934 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 1935 1936 // prevent any changes in effect chain list and in each effect chain 1937 // during mixing and effect process as the audio buffers could be deleted 1938 // or modified if an effect is created or deleted 1939 lockEffectChains_l(effectChains); 1940 } 1941 1942 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 1943 // mix buffers... 1944 mAudioMixer->process(); 1945 sleepTime = 0; 1946 standbyTime = systemTime() + kStandbyTimeInNsecs; 1947 //TODO: delay standby when effects have a tail 1948 } else { 1949 // If no tracks are ready, sleep once for the duration of an output 1950 // buffer size, then write 0s to the output 1951 if (sleepTime == 0) { 1952 if (mixerStatus == MIXER_TRACKS_ENABLED) { 1953 sleepTime = activeSleepTime; 1954 } else { 1955 sleepTime = idleSleepTime; 1956 } 1957 } else if (mBytesWritten != 0 || 1958 (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)) { 1959 memset (mMixBuffer, 0, mixBufferSize); 1960 sleepTime = 0; 1961 LOGV_IF((mBytesWritten == 0 && (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)), "anticipated start"); 1962 } 1963 // TODO add standby time extension fct of effect tail 1964 } 1965 1966 if (mSuspended) { 1967 sleepTime = suspendSleepTimeUs(); 1968 } 1969 // sleepTime == 0 means we must write to audio hardware 1970 if (sleepTime == 0) { 1971 for (size_t i = 0; i < effectChains.size(); i ++) { 1972 effectChains[i]->process_l(); 1973 } 1974 // enable changes in effect chain 1975 unlockEffectChains(effectChains); 1976 mLastWriteTime = systemTime(); 1977 mInWrite = true; 1978 mBytesWritten += mixBufferSize; 1979 1980 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 1981 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 1982 mNumWrites++; 1983 mInWrite = false; 1984 nsecs_t now = systemTime(); 1985 nsecs_t delta = now - mLastWriteTime; 1986 if (delta > maxPeriod) { 1987 mNumDelayedWrites++; 1988 if ((now - lastWarning) > kWarningThrottle) { 1989 LOGW("write blocked for %llu msecs, %d delayed writes, thread %p", 1990 ns2ms(delta), mNumDelayedWrites, this); 1991 lastWarning = now; 1992 } 1993 if (mStandby) { 1994 longStandbyExit = true; 1995 } 1996 } 1997 mStandby = false; 1998 } else { 1999 // enable changes in effect chain 2000 unlockEffectChains(effectChains); 2001 usleep(sleepTime); 2002 } 2003 2004 // finally let go of all our tracks, without the lock held 2005 // since we can't guarantee the destructors won't acquire that 2006 // same lock. 2007 tracksToRemove.clear(); 2008 2009 // Effect chains will be actually deleted here if they were removed from 2010 // mEffectChains list during mixing or effects processing 2011 effectChains.clear(); 2012 } 2013 2014 if (!mStandby) { 2015 mOutput->stream->common.standby(&mOutput->stream->common); 2016 } 2017 2018 releaseWakeLock(); 2019 2020 LOGV("MixerThread %p exiting", this); 2021 return false; 2022} 2023 2024// prepareTracks_l() must be called with ThreadBase::mLock held 2025uint32_t AudioFlinger::MixerThread::prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, Vector< sp<Track> > *tracksToRemove) 2026{ 2027 2028 uint32_t mixerStatus = MIXER_IDLE; 2029 // find out which tracks need to be processed 2030 size_t count = activeTracks.size(); 2031 size_t mixedTracks = 0; 2032 size_t tracksWithEffect = 0; 2033 2034 float masterVolume = mMasterVolume; 2035 bool masterMute = mMasterMute; 2036 2037 if (masterMute) { 2038 masterVolume = 0; 2039 } 2040 // Delegate master volume control to effect in output mix effect chain if needed 2041 sp<EffectChain> chain = getEffectChain_l(AUDIO_SESSION_OUTPUT_MIX); 2042 if (chain != 0) { 2043 uint32_t v = (uint32_t)(masterVolume * (1 << 24)); 2044 chain->setVolume_l(&v, &v); 2045 masterVolume = (float)((v + (1 << 23)) >> 24); 2046 chain.clear(); 2047 } 2048 2049 for (size_t i=0 ; i<count ; i++) { 2050 sp<Track> t = activeTracks[i].promote(); 2051 if (t == 0) continue; 2052 2053 Track* const track = t.get(); 2054 audio_track_cblk_t* cblk = track->cblk(); 2055 2056 // The first time a track is added we wait 2057 // for all its buffers to be filled before processing it 2058 mAudioMixer->setActiveTrack(track->name()); 2059 if (cblk->framesReady() && track->isReady() && 2060 !track->isPaused() && !track->isTerminated()) 2061 { 2062 //LOGV("track %d u=%08x, s=%08x [OK] on thread %p", track->name(), cblk->user, cblk->server, this); 2063 2064 mixedTracks++; 2065 2066 // track->mainBuffer() != mMixBuffer means there is an effect chain 2067 // connected to the track 2068 chain.clear(); 2069 if (track->mainBuffer() != mMixBuffer) { 2070 chain = getEffectChain_l(track->sessionId()); 2071 // Delegate volume control to effect in track effect chain if needed 2072 if (chain != 0) { 2073 tracksWithEffect++; 2074 } else { 2075 LOGW("prepareTracks_l(): track %08x attached to effect but no chain found on session %d", 2076 track->name(), track->sessionId()); 2077 } 2078 } 2079 2080 2081 int param = AudioMixer::VOLUME; 2082 if (track->mFillingUpStatus == Track::FS_FILLED) { 2083 // no ramp for the first volume setting 2084 track->mFillingUpStatus = Track::FS_ACTIVE; 2085 if (track->mState == TrackBase::RESUMING) { 2086 track->mState = TrackBase::ACTIVE; 2087 param = AudioMixer::RAMP_VOLUME; 2088 } 2089 mAudioMixer->setParameter(AudioMixer::RESAMPLE, AudioMixer::RESET, NULL); 2090 } else if (cblk->server != 0) { 2091 // If the track is stopped before the first frame was mixed, 2092 // do not apply ramp 2093 param = AudioMixer::RAMP_VOLUME; 2094 } 2095 2096 // compute volume for this track 2097 uint32_t vl, vr, va; 2098 if (track->isMuted() || track->isPausing() || 2099 mStreamTypes[track->type()].mute) { 2100 vl = vr = va = 0; 2101 if (track->isPausing()) { 2102 track->setPaused(); 2103 } 2104 } else { 2105 2106 // read original volumes with volume control 2107 float typeVolume = mStreamTypes[track->type()].volume; 2108 float v = masterVolume * typeVolume; 2109 vl = (uint32_t)(v * cblk->volume[0]) << 12; 2110 vr = (uint32_t)(v * cblk->volume[1]) << 12; 2111 2112 va = (uint32_t)(v * cblk->sendLevel); 2113 } 2114 // Delegate volume control to effect in track effect chain if needed 2115 if (chain != 0 && chain->setVolume_l(&vl, &vr)) { 2116 // Do not ramp volume if volume is controlled by effect 2117 param = AudioMixer::VOLUME; 2118 track->mHasVolumeController = true; 2119 } else { 2120 // force no volume ramp when volume controller was just disabled or removed 2121 // from effect chain to avoid volume spike 2122 if (track->mHasVolumeController) { 2123 param = AudioMixer::VOLUME; 2124 } 2125 track->mHasVolumeController = false; 2126 } 2127 2128 // Convert volumes from 8.24 to 4.12 format 2129 int16_t left, right, aux; 2130 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 2131 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2132 left = int16_t(v_clamped); 2133 v_clamped = (vr + (1 << 11)) >> 12; 2134 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2135 right = int16_t(v_clamped); 2136 2137 if (va > MAX_GAIN_INT) va = MAX_GAIN_INT; 2138 aux = int16_t(va); 2139 2140 // XXX: these things DON'T need to be done each time 2141 mAudioMixer->setBufferProvider(track); 2142 mAudioMixer->enable(AudioMixer::MIXING); 2143 2144 mAudioMixer->setParameter(param, AudioMixer::VOLUME0, (void *)left); 2145 mAudioMixer->setParameter(param, AudioMixer::VOLUME1, (void *)right); 2146 mAudioMixer->setParameter(param, AudioMixer::AUXLEVEL, (void *)aux); 2147 mAudioMixer->setParameter( 2148 AudioMixer::TRACK, 2149 AudioMixer::FORMAT, (void *)track->format()); 2150 mAudioMixer->setParameter( 2151 AudioMixer::TRACK, 2152 AudioMixer::CHANNEL_MASK, (void *)track->channelMask()); 2153 mAudioMixer->setParameter( 2154 AudioMixer::RESAMPLE, 2155 AudioMixer::SAMPLE_RATE, 2156 (void *)(cblk->sampleRate)); 2157 mAudioMixer->setParameter( 2158 AudioMixer::TRACK, 2159 AudioMixer::MAIN_BUFFER, (void *)track->mainBuffer()); 2160 mAudioMixer->setParameter( 2161 AudioMixer::TRACK, 2162 AudioMixer::AUX_BUFFER, (void *)track->auxBuffer()); 2163 2164 // reset retry count 2165 track->mRetryCount = kMaxTrackRetries; 2166 mixerStatus = MIXER_TRACKS_READY; 2167 } else { 2168 //LOGV("track %d u=%08x, s=%08x [NOT READY] on thread %p", track->name(), cblk->user, cblk->server, this); 2169 if (track->isStopped()) { 2170 track->reset(); 2171 } 2172 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 2173 // We have consumed all the buffers of this track. 2174 // Remove it from the list of active tracks. 2175 tracksToRemove->add(track); 2176 } else { 2177 // No buffers for this track. Give it a few chances to 2178 // fill a buffer, then remove it from active list. 2179 if (--(track->mRetryCount) <= 0) { 2180 LOGV("BUFFER TIMEOUT: remove(%d) from active list on thread %p", track->name(), this); 2181 tracksToRemove->add(track); 2182 // indicate to client process that the track was disabled because of underrun 2183 android_atomic_or(CBLK_DISABLED_ON, &cblk->flags); 2184 } else if (mixerStatus != MIXER_TRACKS_READY) { 2185 mixerStatus = MIXER_TRACKS_ENABLED; 2186 } 2187 } 2188 mAudioMixer->disable(AudioMixer::MIXING); 2189 } 2190 } 2191 2192 // remove all the tracks that need to be... 2193 count = tracksToRemove->size(); 2194 if (UNLIKELY(count)) { 2195 for (size_t i=0 ; i<count ; i++) { 2196 const sp<Track>& track = tracksToRemove->itemAt(i); 2197 mActiveTracks.remove(track); 2198 if (track->mainBuffer() != mMixBuffer) { 2199 chain = getEffectChain_l(track->sessionId()); 2200 if (chain != 0) { 2201 LOGV("stopping track on chain %p for session Id: %d", chain.get(), track->sessionId()); 2202 chain->decActiveTrackCnt(); 2203 } 2204 } 2205 if (track->isTerminated()) { 2206 removeTrack_l(track); 2207 } 2208 } 2209 } 2210 2211 // mix buffer must be cleared if all tracks are connected to an 2212 // effect chain as in this case the mixer will not write to 2213 // mix buffer and track effects will accumulate into it 2214 if (mixedTracks != 0 && mixedTracks == tracksWithEffect) { 2215 memset(mMixBuffer, 0, mFrameCount * mChannelCount * sizeof(int16_t)); 2216 } 2217 2218 return mixerStatus; 2219} 2220 2221void AudioFlinger::MixerThread::invalidateTracks(int streamType) 2222{ 2223 LOGV ("MixerThread::invalidateTracks() mixer %p, streamType %d, mTracks.size %d", 2224 this, streamType, mTracks.size()); 2225 Mutex::Autolock _l(mLock); 2226 2227 size_t size = mTracks.size(); 2228 for (size_t i = 0; i < size; i++) { 2229 sp<Track> t = mTracks[i]; 2230 if (t->type() == streamType) { 2231 android_atomic_or(CBLK_INVALID_ON, &t->mCblk->flags); 2232 t->mCblk->cv.signal(); 2233 } 2234 } 2235} 2236 2237void AudioFlinger::PlaybackThread::setStreamValid(int streamType, bool valid) 2238{ 2239 LOGV ("PlaybackThread::setStreamValid() thread %p, streamType %d, valid %d", 2240 this, streamType, valid); 2241 Mutex::Autolock _l(mLock); 2242 2243 mStreamTypes[streamType].valid = valid; 2244} 2245 2246// getTrackName_l() must be called with ThreadBase::mLock held 2247int AudioFlinger::MixerThread::getTrackName_l() 2248{ 2249 return mAudioMixer->getTrackName(); 2250} 2251 2252// deleteTrackName_l() must be called with ThreadBase::mLock held 2253void AudioFlinger::MixerThread::deleteTrackName_l(int name) 2254{ 2255 LOGV("remove track (%d) and delete from mixer", name); 2256 mAudioMixer->deleteTrackName(name); 2257} 2258 2259// checkForNewParameters_l() must be called with ThreadBase::mLock held 2260bool AudioFlinger::MixerThread::checkForNewParameters_l() 2261{ 2262 bool reconfig = false; 2263 2264 while (!mNewParameters.isEmpty()) { 2265 status_t status = NO_ERROR; 2266 String8 keyValuePair = mNewParameters[0]; 2267 AudioParameter param = AudioParameter(keyValuePair); 2268 int value; 2269 2270 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 2271 reconfig = true; 2272 } 2273 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 2274 if (value != AUDIO_FORMAT_PCM_16_BIT) { 2275 status = BAD_VALUE; 2276 } else { 2277 reconfig = true; 2278 } 2279 } 2280 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 2281 if (value != AUDIO_CHANNEL_OUT_STEREO) { 2282 status = BAD_VALUE; 2283 } else { 2284 reconfig = true; 2285 } 2286 } 2287 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 2288 // do not accept frame count changes if tracks are open as the track buffer 2289 // size depends on frame count and correct behavior would not be garantied 2290 // if frame count is changed after track creation 2291 if (!mTracks.isEmpty()) { 2292 status = INVALID_OPERATION; 2293 } else { 2294 reconfig = true; 2295 } 2296 } 2297 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 2298 // when changing the audio output device, call addBatteryData to notify 2299 // the change 2300 if ((int)mDevice != value) { 2301 uint32_t params = 0; 2302 // check whether speaker is on 2303 if (value & AUDIO_DEVICE_OUT_SPEAKER) { 2304 params |= IMediaPlayerService::kBatteryDataSpeakerOn; 2305 } 2306 2307 int deviceWithoutSpeaker 2308 = AUDIO_DEVICE_OUT_ALL & ~AUDIO_DEVICE_OUT_SPEAKER; 2309 // check if any other device (except speaker) is on 2310 if (value & deviceWithoutSpeaker ) { 2311 params |= IMediaPlayerService::kBatteryDataOtherAudioDeviceOn; 2312 } 2313 2314 if (params != 0) { 2315 addBatteryData(params); 2316 } 2317 } 2318 2319 // forward device change to effects that have requested to be 2320 // aware of attached audio device. 2321 mDevice = (uint32_t)value; 2322 for (size_t i = 0; i < mEffectChains.size(); i++) { 2323 mEffectChains[i]->setDevice_l(mDevice); 2324 } 2325 } 2326 2327 if (status == NO_ERROR) { 2328 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2329 keyValuePair.string()); 2330 if (!mStandby && status == INVALID_OPERATION) { 2331 mOutput->stream->common.standby(&mOutput->stream->common); 2332 mStandby = true; 2333 mBytesWritten = 0; 2334 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2335 keyValuePair.string()); 2336 } 2337 if (status == NO_ERROR && reconfig) { 2338 delete mAudioMixer; 2339 readOutputParameters(); 2340 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 2341 for (size_t i = 0; i < mTracks.size() ; i++) { 2342 int name = getTrackName_l(); 2343 if (name < 0) break; 2344 mTracks[i]->mName = name; 2345 // limit track sample rate to 2 x new output sample rate 2346 if (mTracks[i]->mCblk->sampleRate > 2 * sampleRate()) { 2347 mTracks[i]->mCblk->sampleRate = 2 * sampleRate(); 2348 } 2349 } 2350 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2351 } 2352 } 2353 2354 mNewParameters.removeAt(0); 2355 2356 mParamStatus = status; 2357 mParamCond.signal(); 2358 // wait for condition with time out in case the thread calling ThreadBase::setParameters() 2359 // already timed out waiting for the status and will never signal the condition. 2360 mWaitWorkCV.waitRelative(mLock, kSetParametersTimeout); 2361 } 2362 return reconfig; 2363} 2364 2365status_t AudioFlinger::MixerThread::dumpInternals(int fd, const Vector<String16>& args) 2366{ 2367 const size_t SIZE = 256; 2368 char buffer[SIZE]; 2369 String8 result; 2370 2371 PlaybackThread::dumpInternals(fd, args); 2372 2373 snprintf(buffer, SIZE, "AudioMixer tracks: %08x\n", mAudioMixer->trackNames()); 2374 result.append(buffer); 2375 write(fd, result.string(), result.size()); 2376 return NO_ERROR; 2377} 2378 2379uint32_t AudioFlinger::MixerThread::activeSleepTimeUs() 2380{ 2381 return (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2382} 2383 2384uint32_t AudioFlinger::MixerThread::idleSleepTimeUs() 2385{ 2386 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2387} 2388 2389uint32_t AudioFlinger::MixerThread::suspendSleepTimeUs() 2390{ 2391 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2392} 2393 2394// ---------------------------------------------------------------------------- 2395AudioFlinger::DirectOutputThread::DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 2396 : PlaybackThread(audioFlinger, output, id, device) 2397{ 2398 mType = ThreadBase::DIRECT; 2399} 2400 2401AudioFlinger::DirectOutputThread::~DirectOutputThread() 2402{ 2403} 2404 2405 2406static inline int16_t clamp16(int32_t sample) 2407{ 2408 if ((sample>>15) ^ (sample>>31)) 2409 sample = 0x7FFF ^ (sample>>31); 2410 return sample; 2411} 2412 2413static inline 2414int32_t mul(int16_t in, int16_t v) 2415{ 2416#if defined(__arm__) && !defined(__thumb__) 2417 int32_t out; 2418 asm( "smulbb %[out], %[in], %[v] \n" 2419 : [out]"=r"(out) 2420 : [in]"%r"(in), [v]"r"(v) 2421 : ); 2422 return out; 2423#else 2424 return in * int32_t(v); 2425#endif 2426} 2427 2428void AudioFlinger::DirectOutputThread::applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp) 2429{ 2430 // Do not apply volume on compressed audio 2431 if (!audio_is_linear_pcm(mFormat)) { 2432 return; 2433 } 2434 2435 // convert to signed 16 bit before volume calculation 2436 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2437 size_t count = mFrameCount * mChannelCount; 2438 uint8_t *src = (uint8_t *)mMixBuffer + count-1; 2439 int16_t *dst = mMixBuffer + count-1; 2440 while(count--) { 2441 *dst-- = (int16_t)(*src--^0x80) << 8; 2442 } 2443 } 2444 2445 size_t frameCount = mFrameCount; 2446 int16_t *out = mMixBuffer; 2447 if (ramp) { 2448 if (mChannelCount == 1) { 2449 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2450 int32_t vlInc = d / (int32_t)frameCount; 2451 int32_t vl = ((int32_t)mLeftVolShort << 16); 2452 do { 2453 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2454 out++; 2455 vl += vlInc; 2456 } while (--frameCount); 2457 2458 } else { 2459 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2460 int32_t vlInc = d / (int32_t)frameCount; 2461 d = ((int32_t)rightVol - (int32_t)mRightVolShort) << 16; 2462 int32_t vrInc = d / (int32_t)frameCount; 2463 int32_t vl = ((int32_t)mLeftVolShort << 16); 2464 int32_t vr = ((int32_t)mRightVolShort << 16); 2465 do { 2466 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2467 out[1] = clamp16(mul(out[1], vr >> 16) >> 12); 2468 out += 2; 2469 vl += vlInc; 2470 vr += vrInc; 2471 } while (--frameCount); 2472 } 2473 } else { 2474 if (mChannelCount == 1) { 2475 do { 2476 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2477 out++; 2478 } while (--frameCount); 2479 } else { 2480 do { 2481 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2482 out[1] = clamp16(mul(out[1], rightVol) >> 12); 2483 out += 2; 2484 } while (--frameCount); 2485 } 2486 } 2487 2488 // convert back to unsigned 8 bit after volume calculation 2489 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2490 size_t count = mFrameCount * mChannelCount; 2491 int16_t *src = mMixBuffer; 2492 uint8_t *dst = (uint8_t *)mMixBuffer; 2493 while(count--) { 2494 *dst++ = (uint8_t)(((int32_t)*src++ + (1<<7)) >> 8)^0x80; 2495 } 2496 } 2497 2498 mLeftVolShort = leftVol; 2499 mRightVolShort = rightVol; 2500} 2501 2502bool AudioFlinger::DirectOutputThread::threadLoop() 2503{ 2504 uint32_t mixerStatus = MIXER_IDLE; 2505 sp<Track> trackToRemove; 2506 sp<Track> activeTrack; 2507 nsecs_t standbyTime = systemTime(); 2508 int8_t *curBuf; 2509 size_t mixBufferSize = mFrameCount*mFrameSize; 2510 uint32_t activeSleepTime = activeSleepTimeUs(); 2511 uint32_t idleSleepTime = idleSleepTimeUs(); 2512 uint32_t sleepTime = idleSleepTime; 2513 // use shorter standby delay as on normal output to release 2514 // hardware resources as soon as possible 2515 nsecs_t standbyDelay = microseconds(activeSleepTime*2); 2516 2517 acquireWakeLock(); 2518 2519 while (!exitPending()) 2520 { 2521 bool rampVolume; 2522 uint16_t leftVol; 2523 uint16_t rightVol; 2524 Vector< sp<EffectChain> > effectChains; 2525 2526 processConfigEvents(); 2527 2528 mixerStatus = MIXER_IDLE; 2529 2530 { // scope for the mLock 2531 2532 Mutex::Autolock _l(mLock); 2533 2534 if (checkForNewParameters_l()) { 2535 mixBufferSize = mFrameCount*mFrameSize; 2536 activeSleepTime = activeSleepTimeUs(); 2537 idleSleepTime = idleSleepTimeUs(); 2538 standbyDelay = microseconds(activeSleepTime*2); 2539 } 2540 2541 // put audio hardware into standby after short delay 2542 if UNLIKELY((!mActiveTracks.size() && systemTime() > standbyTime) || 2543 mSuspended) { 2544 // wait until we have something to do... 2545 if (!mStandby) { 2546 LOGV("Audio hardware entering standby, mixer %p\n", this); 2547 mOutput->stream->common.standby(&mOutput->stream->common); 2548 mStandby = true; 2549 mBytesWritten = 0; 2550 } 2551 2552 if (!mActiveTracks.size() && mConfigEvents.isEmpty()) { 2553 // we're about to wait, flush the binder command buffer 2554 IPCThreadState::self()->flushCommands(); 2555 2556 if (exitPending()) break; 2557 2558 releaseWakeLock_l(); 2559 LOGV("DirectOutputThread %p TID %d going to sleep\n", this, gettid()); 2560 mWaitWorkCV.wait(mLock); 2561 LOGV("DirectOutputThread %p TID %d waking up in active mode\n", this, gettid()); 2562 acquireWakeLock_l(); 2563 2564 if (mMasterMute == false) { 2565 char value[PROPERTY_VALUE_MAX]; 2566 property_get("ro.audio.silent", value, "0"); 2567 if (atoi(value)) { 2568 LOGD("Silence is golden"); 2569 setMasterMute(true); 2570 } 2571 } 2572 2573 standbyTime = systemTime() + standbyDelay; 2574 sleepTime = idleSleepTime; 2575 continue; 2576 } 2577 } 2578 2579 effectChains = mEffectChains; 2580 2581 // find out which tracks need to be processed 2582 if (mActiveTracks.size() != 0) { 2583 sp<Track> t = mActiveTracks[0].promote(); 2584 if (t == 0) continue; 2585 2586 Track* const track = t.get(); 2587 audio_track_cblk_t* cblk = track->cblk(); 2588 2589 // The first time a track is added we wait 2590 // for all its buffers to be filled before processing it 2591 if (cblk->framesReady() && track->isReady() && 2592 !track->isPaused() && !track->isTerminated()) 2593 { 2594 //LOGV("track %d u=%08x, s=%08x [OK]", track->name(), cblk->user, cblk->server); 2595 2596 if (track->mFillingUpStatus == Track::FS_FILLED) { 2597 track->mFillingUpStatus = Track::FS_ACTIVE; 2598 mLeftVolFloat = mRightVolFloat = 0; 2599 mLeftVolShort = mRightVolShort = 0; 2600 if (track->mState == TrackBase::RESUMING) { 2601 track->mState = TrackBase::ACTIVE; 2602 rampVolume = true; 2603 } 2604 } else if (cblk->server != 0) { 2605 // If the track is stopped before the first frame was mixed, 2606 // do not apply ramp 2607 rampVolume = true; 2608 } 2609 // compute volume for this track 2610 float left, right; 2611 if (track->isMuted() || mMasterMute || track->isPausing() || 2612 mStreamTypes[track->type()].mute) { 2613 left = right = 0; 2614 if (track->isPausing()) { 2615 track->setPaused(); 2616 } 2617 } else { 2618 float typeVolume = mStreamTypes[track->type()].volume; 2619 float v = mMasterVolume * typeVolume; 2620 float v_clamped = v * cblk->volume[0]; 2621 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2622 left = v_clamped/MAX_GAIN; 2623 v_clamped = v * cblk->volume[1]; 2624 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2625 right = v_clamped/MAX_GAIN; 2626 } 2627 2628 if (left != mLeftVolFloat || right != mRightVolFloat) { 2629 mLeftVolFloat = left; 2630 mRightVolFloat = right; 2631 2632 // If audio HAL implements volume control, 2633 // force software volume to nominal value 2634 if (mOutput->stream->set_volume(mOutput->stream, left, right) == NO_ERROR) { 2635 left = 1.0f; 2636 right = 1.0f; 2637 } 2638 2639 // Convert volumes from float to 8.24 2640 uint32_t vl = (uint32_t)(left * (1 << 24)); 2641 uint32_t vr = (uint32_t)(right * (1 << 24)); 2642 2643 // Delegate volume control to effect in track effect chain if needed 2644 // only one effect chain can be present on DirectOutputThread, so if 2645 // there is one, the track is connected to it 2646 if (!effectChains.isEmpty()) { 2647 // Do not ramp volume if volume is controlled by effect 2648 if(effectChains[0]->setVolume_l(&vl, &vr)) { 2649 rampVolume = false; 2650 } 2651 } 2652 2653 // Convert volumes from 8.24 to 4.12 format 2654 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 2655 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2656 leftVol = (uint16_t)v_clamped; 2657 v_clamped = (vr + (1 << 11)) >> 12; 2658 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2659 rightVol = (uint16_t)v_clamped; 2660 } else { 2661 leftVol = mLeftVolShort; 2662 rightVol = mRightVolShort; 2663 rampVolume = false; 2664 } 2665 2666 // reset retry count 2667 track->mRetryCount = kMaxTrackRetriesDirect; 2668 activeTrack = t; 2669 mixerStatus = MIXER_TRACKS_READY; 2670 } else { 2671 //LOGV("track %d u=%08x, s=%08x [NOT READY]", track->name(), cblk->user, cblk->server); 2672 if (track->isStopped()) { 2673 track->reset(); 2674 } 2675 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 2676 // We have consumed all the buffers of this track. 2677 // Remove it from the list of active tracks. 2678 trackToRemove = track; 2679 } else { 2680 // No buffers for this track. Give it a few chances to 2681 // fill a buffer, then remove it from active list. 2682 if (--(track->mRetryCount) <= 0) { 2683 LOGV("BUFFER TIMEOUT: remove(%d) from active list", track->name()); 2684 trackToRemove = track; 2685 } else { 2686 mixerStatus = MIXER_TRACKS_ENABLED; 2687 } 2688 } 2689 } 2690 } 2691 2692 // remove all the tracks that need to be... 2693 if (UNLIKELY(trackToRemove != 0)) { 2694 mActiveTracks.remove(trackToRemove); 2695 if (!effectChains.isEmpty()) { 2696 LOGV("stopping track on chain %p for session Id: %d", effectChains[0].get(), 2697 trackToRemove->sessionId()); 2698 effectChains[0]->decActiveTrackCnt(); 2699 } 2700 if (trackToRemove->isTerminated()) { 2701 removeTrack_l(trackToRemove); 2702 } 2703 } 2704 2705 lockEffectChains_l(effectChains); 2706 } 2707 2708 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2709 AudioBufferProvider::Buffer buffer; 2710 size_t frameCount = mFrameCount; 2711 curBuf = (int8_t *)mMixBuffer; 2712 // output audio to hardware 2713 while (frameCount) { 2714 buffer.frameCount = frameCount; 2715 activeTrack->getNextBuffer(&buffer); 2716 if (UNLIKELY(buffer.raw == 0)) { 2717 memset(curBuf, 0, frameCount * mFrameSize); 2718 break; 2719 } 2720 memcpy(curBuf, buffer.raw, buffer.frameCount * mFrameSize); 2721 frameCount -= buffer.frameCount; 2722 curBuf += buffer.frameCount * mFrameSize; 2723 activeTrack->releaseBuffer(&buffer); 2724 } 2725 sleepTime = 0; 2726 standbyTime = systemTime() + standbyDelay; 2727 } else { 2728 if (sleepTime == 0) { 2729 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2730 sleepTime = activeSleepTime; 2731 } else { 2732 sleepTime = idleSleepTime; 2733 } 2734 } else if (mBytesWritten != 0 && audio_is_linear_pcm(mFormat)) { 2735 memset (mMixBuffer, 0, mFrameCount * mFrameSize); 2736 sleepTime = 0; 2737 } 2738 } 2739 2740 if (mSuspended) { 2741 sleepTime = suspendSleepTimeUs(); 2742 } 2743 // sleepTime == 0 means we must write to audio hardware 2744 if (sleepTime == 0) { 2745 if (mixerStatus == MIXER_TRACKS_READY) { 2746 applyVolume(leftVol, rightVol, rampVolume); 2747 } 2748 for (size_t i = 0; i < effectChains.size(); i ++) { 2749 effectChains[i]->process_l(); 2750 } 2751 unlockEffectChains(effectChains); 2752 2753 mLastWriteTime = systemTime(); 2754 mInWrite = true; 2755 mBytesWritten += mixBufferSize; 2756 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 2757 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 2758 mNumWrites++; 2759 mInWrite = false; 2760 mStandby = false; 2761 } else { 2762 unlockEffectChains(effectChains); 2763 usleep(sleepTime); 2764 } 2765 2766 // finally let go of removed track, without the lock held 2767 // since we can't guarantee the destructors won't acquire that 2768 // same lock. 2769 trackToRemove.clear(); 2770 activeTrack.clear(); 2771 2772 // Effect chains will be actually deleted here if they were removed from 2773 // mEffectChains list during mixing or effects processing 2774 effectChains.clear(); 2775 } 2776 2777 if (!mStandby) { 2778 mOutput->stream->common.standby(&mOutput->stream->common); 2779 } 2780 2781 releaseWakeLock(); 2782 2783 LOGV("DirectOutputThread %p exiting", this); 2784 return false; 2785} 2786 2787// getTrackName_l() must be called with ThreadBase::mLock held 2788int AudioFlinger::DirectOutputThread::getTrackName_l() 2789{ 2790 return 0; 2791} 2792 2793// deleteTrackName_l() must be called with ThreadBase::mLock held 2794void AudioFlinger::DirectOutputThread::deleteTrackName_l(int name) 2795{ 2796} 2797 2798// checkForNewParameters_l() must be called with ThreadBase::mLock held 2799bool AudioFlinger::DirectOutputThread::checkForNewParameters_l() 2800{ 2801 bool reconfig = false; 2802 2803 while (!mNewParameters.isEmpty()) { 2804 status_t status = NO_ERROR; 2805 String8 keyValuePair = mNewParameters[0]; 2806 AudioParameter param = AudioParameter(keyValuePair); 2807 int value; 2808 2809 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 2810 // do not accept frame count changes if tracks are open as the track buffer 2811 // size depends on frame count and correct behavior would not be garantied 2812 // if frame count is changed after track creation 2813 if (!mTracks.isEmpty()) { 2814 status = INVALID_OPERATION; 2815 } else { 2816 reconfig = true; 2817 } 2818 } 2819 if (status == NO_ERROR) { 2820 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2821 keyValuePair.string()); 2822 if (!mStandby && status == INVALID_OPERATION) { 2823 mOutput->stream->common.standby(&mOutput->stream->common); 2824 mStandby = true; 2825 mBytesWritten = 0; 2826 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2827 keyValuePair.string()); 2828 } 2829 if (status == NO_ERROR && reconfig) { 2830 readOutputParameters(); 2831 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2832 } 2833 } 2834 2835 mNewParameters.removeAt(0); 2836 2837 mParamStatus = status; 2838 mParamCond.signal(); 2839 // wait for condition with time out in case the thread calling ThreadBase::setParameters() 2840 // already timed out waiting for the status and will never signal the condition. 2841 mWaitWorkCV.waitRelative(mLock, kSetParametersTimeout); 2842 } 2843 return reconfig; 2844} 2845 2846uint32_t AudioFlinger::DirectOutputThread::activeSleepTimeUs() 2847{ 2848 uint32_t time; 2849 if (audio_is_linear_pcm(mFormat)) { 2850 time = (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2851 } else { 2852 time = 10000; 2853 } 2854 return time; 2855} 2856 2857uint32_t AudioFlinger::DirectOutputThread::idleSleepTimeUs() 2858{ 2859 uint32_t time; 2860 if (audio_is_linear_pcm(mFormat)) { 2861 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2862 } else { 2863 time = 10000; 2864 } 2865 return time; 2866} 2867 2868uint32_t AudioFlinger::DirectOutputThread::suspendSleepTimeUs() 2869{ 2870 uint32_t time; 2871 if (audio_is_linear_pcm(mFormat)) { 2872 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2873 } else { 2874 time = 10000; 2875 } 2876 return time; 2877} 2878 2879 2880// ---------------------------------------------------------------------------- 2881 2882AudioFlinger::DuplicatingThread::DuplicatingThread(const sp<AudioFlinger>& audioFlinger, AudioFlinger::MixerThread* mainThread, int id) 2883 : MixerThread(audioFlinger, mainThread->getOutput(), id, mainThread->device()), mWaitTimeMs(UINT_MAX) 2884{ 2885 mType = ThreadBase::DUPLICATING; 2886 addOutputTrack(mainThread); 2887} 2888 2889AudioFlinger::DuplicatingThread::~DuplicatingThread() 2890{ 2891 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2892 mOutputTracks[i]->destroy(); 2893 } 2894 mOutputTracks.clear(); 2895} 2896 2897bool AudioFlinger::DuplicatingThread::threadLoop() 2898{ 2899 Vector< sp<Track> > tracksToRemove; 2900 uint32_t mixerStatus = MIXER_IDLE; 2901 nsecs_t standbyTime = systemTime(); 2902 size_t mixBufferSize = mFrameCount*mFrameSize; 2903 SortedVector< sp<OutputTrack> > outputTracks; 2904 uint32_t writeFrames = 0; 2905 uint32_t activeSleepTime = activeSleepTimeUs(); 2906 uint32_t idleSleepTime = idleSleepTimeUs(); 2907 uint32_t sleepTime = idleSleepTime; 2908 Vector< sp<EffectChain> > effectChains; 2909 2910 acquireWakeLock(); 2911 2912 while (!exitPending()) 2913 { 2914 processConfigEvents(); 2915 2916 mixerStatus = MIXER_IDLE; 2917 { // scope for the mLock 2918 2919 Mutex::Autolock _l(mLock); 2920 2921 if (checkForNewParameters_l()) { 2922 mixBufferSize = mFrameCount*mFrameSize; 2923 updateWaitTime(); 2924 activeSleepTime = activeSleepTimeUs(); 2925 idleSleepTime = idleSleepTimeUs(); 2926 } 2927 2928 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 2929 2930 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2931 outputTracks.add(mOutputTracks[i]); 2932 } 2933 2934 // put audio hardware into standby after short delay 2935 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 2936 mSuspended) { 2937 if (!mStandby) { 2938 for (size_t i = 0; i < outputTracks.size(); i++) { 2939 outputTracks[i]->stop(); 2940 } 2941 mStandby = true; 2942 mBytesWritten = 0; 2943 } 2944 2945 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 2946 // we're about to wait, flush the binder command buffer 2947 IPCThreadState::self()->flushCommands(); 2948 outputTracks.clear(); 2949 2950 if (exitPending()) break; 2951 2952 releaseWakeLock_l(); 2953 LOGV("DuplicatingThread %p TID %d going to sleep\n", this, gettid()); 2954 mWaitWorkCV.wait(mLock); 2955 LOGV("DuplicatingThread %p TID %d waking up\n", this, gettid()); 2956 acquireWakeLock_l(); 2957 2958 if (mMasterMute == false) { 2959 char value[PROPERTY_VALUE_MAX]; 2960 property_get("ro.audio.silent", value, "0"); 2961 if (atoi(value)) { 2962 LOGD("Silence is golden"); 2963 setMasterMute(true); 2964 } 2965 } 2966 2967 standbyTime = systemTime() + kStandbyTimeInNsecs; 2968 sleepTime = idleSleepTime; 2969 continue; 2970 } 2971 } 2972 2973 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 2974 2975 // prevent any changes in effect chain list and in each effect chain 2976 // during mixing and effect process as the audio buffers could be deleted 2977 // or modified if an effect is created or deleted 2978 lockEffectChains_l(effectChains); 2979 } 2980 2981 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2982 // mix buffers... 2983 if (outputsReady(outputTracks)) { 2984 mAudioMixer->process(); 2985 } else { 2986 memset(mMixBuffer, 0, mixBufferSize); 2987 } 2988 sleepTime = 0; 2989 writeFrames = mFrameCount; 2990 } else { 2991 if (sleepTime == 0) { 2992 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2993 sleepTime = activeSleepTime; 2994 } else { 2995 sleepTime = idleSleepTime; 2996 } 2997 } else if (mBytesWritten != 0) { 2998 // flush remaining overflow buffers in output tracks 2999 for (size_t i = 0; i < outputTracks.size(); i++) { 3000 if (outputTracks[i]->isActive()) { 3001 sleepTime = 0; 3002 writeFrames = 0; 3003 memset(mMixBuffer, 0, mixBufferSize); 3004 break; 3005 } 3006 } 3007 } 3008 } 3009 3010 if (mSuspended) { 3011 sleepTime = suspendSleepTimeUs(); 3012 } 3013 // sleepTime == 0 means we must write to audio hardware 3014 if (sleepTime == 0) { 3015 for (size_t i = 0; i < effectChains.size(); i ++) { 3016 effectChains[i]->process_l(); 3017 } 3018 // enable changes in effect chain 3019 unlockEffectChains(effectChains); 3020 3021 standbyTime = systemTime() + kStandbyTimeInNsecs; 3022 for (size_t i = 0; i < outputTracks.size(); i++) { 3023 outputTracks[i]->write(mMixBuffer, writeFrames); 3024 } 3025 mStandby = false; 3026 mBytesWritten += mixBufferSize; 3027 } else { 3028 // enable changes in effect chain 3029 unlockEffectChains(effectChains); 3030 usleep(sleepTime); 3031 } 3032 3033 // finally let go of all our tracks, without the lock held 3034 // since we can't guarantee the destructors won't acquire that 3035 // same lock. 3036 tracksToRemove.clear(); 3037 outputTracks.clear(); 3038 3039 // Effect chains will be actually deleted here if they were removed from 3040 // mEffectChains list during mixing or effects processing 3041 effectChains.clear(); 3042 } 3043 3044 releaseWakeLock(); 3045 3046 return false; 3047} 3048 3049void AudioFlinger::DuplicatingThread::addOutputTrack(MixerThread *thread) 3050{ 3051 int frameCount = (3 * mFrameCount * mSampleRate) / thread->sampleRate(); 3052 OutputTrack *outputTrack = new OutputTrack((ThreadBase *)thread, 3053 this, 3054 mSampleRate, 3055 mFormat, 3056 mChannelMask, 3057 frameCount); 3058 if (outputTrack->cblk() != NULL) { 3059 thread->setStreamVolume(AUDIO_STREAM_CNT, 1.0f); 3060 mOutputTracks.add(outputTrack); 3061 LOGV("addOutputTrack() track %p, on thread %p", outputTrack, thread); 3062 updateWaitTime(); 3063 } 3064} 3065 3066void AudioFlinger::DuplicatingThread::removeOutputTrack(MixerThread *thread) 3067{ 3068 Mutex::Autolock _l(mLock); 3069 for (size_t i = 0; i < mOutputTracks.size(); i++) { 3070 if (mOutputTracks[i]->thread() == (ThreadBase *)thread) { 3071 mOutputTracks[i]->destroy(); 3072 mOutputTracks.removeAt(i); 3073 updateWaitTime(); 3074 return; 3075 } 3076 } 3077 LOGV("removeOutputTrack(): unkonwn thread: %p", thread); 3078} 3079 3080void AudioFlinger::DuplicatingThread::updateWaitTime() 3081{ 3082 mWaitTimeMs = UINT_MAX; 3083 for (size_t i = 0; i < mOutputTracks.size(); i++) { 3084 sp<ThreadBase> strong = mOutputTracks[i]->thread().promote(); 3085 if (strong != NULL) { 3086 uint32_t waitTimeMs = (strong->frameCount() * 2 * 1000) / strong->sampleRate(); 3087 if (waitTimeMs < mWaitTimeMs) { 3088 mWaitTimeMs = waitTimeMs; 3089 } 3090 } 3091 } 3092} 3093 3094 3095bool AudioFlinger::DuplicatingThread::outputsReady(SortedVector< sp<OutputTrack> > &outputTracks) 3096{ 3097 for (size_t i = 0; i < outputTracks.size(); i++) { 3098 sp <ThreadBase> thread = outputTracks[i]->thread().promote(); 3099 if (thread == 0) { 3100 LOGW("DuplicatingThread::outputsReady() could not promote thread on output track %p", outputTracks[i].get()); 3101 return false; 3102 } 3103 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3104 if (playbackThread->standby() && !playbackThread->isSuspended()) { 3105 LOGV("DuplicatingThread output track %p on thread %p Not Ready", outputTracks[i].get(), thread.get()); 3106 return false; 3107 } 3108 } 3109 return true; 3110} 3111 3112uint32_t AudioFlinger::DuplicatingThread::activeSleepTimeUs() 3113{ 3114 return (mWaitTimeMs * 1000) / 2; 3115} 3116 3117// ---------------------------------------------------------------------------- 3118 3119// TrackBase constructor must be called with AudioFlinger::mLock held 3120AudioFlinger::ThreadBase::TrackBase::TrackBase( 3121 const wp<ThreadBase>& thread, 3122 const sp<Client>& client, 3123 uint32_t sampleRate, 3124 uint32_t format, 3125 uint32_t channelMask, 3126 int frameCount, 3127 uint32_t flags, 3128 const sp<IMemory>& sharedBuffer, 3129 int sessionId) 3130 : RefBase(), 3131 mThread(thread), 3132 mClient(client), 3133 mCblk(0), 3134 mFrameCount(0), 3135 mState(IDLE), 3136 mClientTid(-1), 3137 mFormat(format), 3138 mFlags(flags & ~SYSTEM_FLAGS_MASK), 3139 mSessionId(sessionId) 3140{ 3141 LOGV_IF(sharedBuffer != 0, "sharedBuffer: %p, size: %d", sharedBuffer->pointer(), sharedBuffer->size()); 3142 3143 // LOGD("Creating track with %d buffers @ %d bytes", bufferCount, bufferSize); 3144 size_t size = sizeof(audio_track_cblk_t); 3145 uint8_t channelCount = popcount(channelMask); 3146 size_t bufferSize = frameCount*channelCount*sizeof(int16_t); 3147 if (sharedBuffer == 0) { 3148 size += bufferSize; 3149 } 3150 3151 if (client != NULL) { 3152 mCblkMemory = client->heap()->allocate(size); 3153 if (mCblkMemory != 0) { 3154 mCblk = static_cast<audio_track_cblk_t *>(mCblkMemory->pointer()); 3155 if (mCblk) { // construct the shared structure in-place. 3156 new(mCblk) audio_track_cblk_t(); 3157 // clear all buffers 3158 mCblk->frameCount = frameCount; 3159 mCblk->sampleRate = sampleRate; 3160 mChannelCount = channelCount; 3161 mChannelMask = channelMask; 3162 if (sharedBuffer == 0) { 3163 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 3164 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 3165 // Force underrun condition to avoid false underrun callback until first data is 3166 // written to buffer (other flags are cleared) 3167 mCblk->flags = CBLK_UNDERRUN_ON; 3168 } else { 3169 mBuffer = sharedBuffer->pointer(); 3170 } 3171 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 3172 } 3173 } else { 3174 LOGE("not enough memory for AudioTrack size=%u", size); 3175 client->heap()->dump("AudioTrack"); 3176 return; 3177 } 3178 } else { 3179 mCblk = (audio_track_cblk_t *)(new uint8_t[size]); 3180 if (mCblk) { // construct the shared structure in-place. 3181 new(mCblk) audio_track_cblk_t(); 3182 // clear all buffers 3183 mCblk->frameCount = frameCount; 3184 mCblk->sampleRate = sampleRate; 3185 mChannelCount = channelCount; 3186 mChannelMask = channelMask; 3187 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 3188 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 3189 // Force underrun condition to avoid false underrun callback until first data is 3190 // written to buffer (other flags are cleared) 3191 mCblk->flags = CBLK_UNDERRUN_ON; 3192 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 3193 } 3194 } 3195} 3196 3197AudioFlinger::ThreadBase::TrackBase::~TrackBase() 3198{ 3199 if (mCblk) { 3200 mCblk->~audio_track_cblk_t(); // destroy our shared-structure. 3201 if (mClient == NULL) { 3202 delete mCblk; 3203 } 3204 } 3205 mCblkMemory.clear(); // and free the shared memory 3206 if (mClient != NULL) { 3207 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 3208 mClient.clear(); 3209 } 3210} 3211 3212void AudioFlinger::ThreadBase::TrackBase::releaseBuffer(AudioBufferProvider::Buffer* buffer) 3213{ 3214 buffer->raw = 0; 3215 mFrameCount = buffer->frameCount; 3216 step(); 3217 buffer->frameCount = 0; 3218} 3219 3220bool AudioFlinger::ThreadBase::TrackBase::step() { 3221 bool result; 3222 audio_track_cblk_t* cblk = this->cblk(); 3223 3224 result = cblk->stepServer(mFrameCount); 3225 if (!result) { 3226 LOGV("stepServer failed acquiring cblk mutex"); 3227 mFlags |= STEPSERVER_FAILED; 3228 } 3229 return result; 3230} 3231 3232void AudioFlinger::ThreadBase::TrackBase::reset() { 3233 audio_track_cblk_t* cblk = this->cblk(); 3234 3235 cblk->user = 0; 3236 cblk->server = 0; 3237 cblk->userBase = 0; 3238 cblk->serverBase = 0; 3239 mFlags &= (uint32_t)(~SYSTEM_FLAGS_MASK); 3240 LOGV("TrackBase::reset"); 3241} 3242 3243sp<IMemory> AudioFlinger::ThreadBase::TrackBase::getCblk() const 3244{ 3245 return mCblkMemory; 3246} 3247 3248int AudioFlinger::ThreadBase::TrackBase::sampleRate() const { 3249 return (int)mCblk->sampleRate; 3250} 3251 3252int AudioFlinger::ThreadBase::TrackBase::channelCount() const { 3253 return (const int)mChannelCount; 3254} 3255 3256uint32_t AudioFlinger::ThreadBase::TrackBase::channelMask() const { 3257 return mChannelMask; 3258} 3259 3260void* AudioFlinger::ThreadBase::TrackBase::getBuffer(uint32_t offset, uint32_t frames) const { 3261 audio_track_cblk_t* cblk = this->cblk(); 3262 int8_t *bufferStart = (int8_t *)mBuffer + (offset-cblk->serverBase)*cblk->frameSize; 3263 int8_t *bufferEnd = bufferStart + frames * cblk->frameSize; 3264 3265 // Check validity of returned pointer in case the track control block would have been corrupted. 3266 if (bufferStart < mBuffer || bufferStart > bufferEnd || bufferEnd > mBufferEnd || 3267 ((unsigned long)bufferStart & (unsigned long)(cblk->frameSize - 1))) { 3268 LOGE("TrackBase::getBuffer buffer out of range:\n start: %p, end %p , mBuffer %p mBufferEnd %p\n \ 3269 server %d, serverBase %d, user %d, userBase %d", 3270 bufferStart, bufferEnd, mBuffer, mBufferEnd, 3271 cblk->server, cblk->serverBase, cblk->user, cblk->userBase); 3272 return 0; 3273 } 3274 3275 return bufferStart; 3276} 3277 3278// ---------------------------------------------------------------------------- 3279 3280// Track constructor must be called with AudioFlinger::mLock and ThreadBase::mLock held 3281AudioFlinger::PlaybackThread::Track::Track( 3282 const wp<ThreadBase>& thread, 3283 const sp<Client>& client, 3284 int streamType, 3285 uint32_t sampleRate, 3286 uint32_t format, 3287 uint32_t channelMask, 3288 int frameCount, 3289 const sp<IMemory>& sharedBuffer, 3290 int sessionId) 3291 : TrackBase(thread, client, sampleRate, format, channelMask, frameCount, 0, sharedBuffer, sessionId), 3292 mMute(false), mSharedBuffer(sharedBuffer), mName(-1), mMainBuffer(NULL), mAuxBuffer(NULL), 3293 mAuxEffectId(0), mHasVolumeController(false) 3294{ 3295 if (mCblk != NULL) { 3296 sp<ThreadBase> baseThread = thread.promote(); 3297 if (baseThread != 0) { 3298 PlaybackThread *playbackThread = (PlaybackThread *)baseThread.get(); 3299 mName = playbackThread->getTrackName_l(); 3300 mMainBuffer = playbackThread->mixBuffer(); 3301 } 3302 LOGV("Track constructor name %d, calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3303 if (mName < 0) { 3304 LOGE("no more track names available"); 3305 } 3306 mVolume[0] = 1.0f; 3307 mVolume[1] = 1.0f; 3308 mStreamType = streamType; 3309 // NOTE: audio_track_cblk_t::frameSize for 8 bit PCM data is based on a sample size of 3310 // 16 bit because data is converted to 16 bit before being stored in buffer by AudioTrack 3311 mCblk->frameSize = audio_is_linear_pcm(format) ? mChannelCount * sizeof(int16_t) : sizeof(uint8_t); 3312 } 3313} 3314 3315AudioFlinger::PlaybackThread::Track::~Track() 3316{ 3317 LOGV("PlaybackThread::Track destructor"); 3318 sp<ThreadBase> thread = mThread.promote(); 3319 if (thread != 0) { 3320 Mutex::Autolock _l(thread->mLock); 3321 mState = TERMINATED; 3322 } 3323} 3324 3325void AudioFlinger::PlaybackThread::Track::destroy() 3326{ 3327 // NOTE: destroyTrack_l() can remove a strong reference to this Track 3328 // by removing it from mTracks vector, so there is a risk that this Tracks's 3329 // desctructor is called. As the destructor needs to lock mLock, 3330 // we must acquire a strong reference on this Track before locking mLock 3331 // here so that the destructor is called only when exiting this function. 3332 // On the other hand, as long as Track::destroy() is only called by 3333 // TrackHandle destructor, the TrackHandle still holds a strong ref on 3334 // this Track with its member mTrack. 3335 sp<Track> keep(this); 3336 { // scope for mLock 3337 sp<ThreadBase> thread = mThread.promote(); 3338 if (thread != 0) { 3339 if (!isOutputTrack()) { 3340 if (mState == ACTIVE || mState == RESUMING) { 3341 AudioSystem::stopOutput(thread->id(), 3342 (audio_stream_type_t)mStreamType, 3343 mSessionId); 3344 3345 // to track the speaker usage 3346 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3347 } 3348 AudioSystem::releaseOutput(thread->id()); 3349 } 3350 Mutex::Autolock _l(thread->mLock); 3351 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3352 playbackThread->destroyTrack_l(this); 3353 } 3354 } 3355} 3356 3357void AudioFlinger::PlaybackThread::Track::dump(char* buffer, size_t size) 3358{ 3359 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", 3360 mName - AudioMixer::TRACK0, 3361 (mClient == NULL) ? getpid() : mClient->pid(), 3362 mStreamType, 3363 mFormat, 3364 mChannelMask, 3365 mSessionId, 3366 mFrameCount, 3367 mState, 3368 mMute, 3369 mFillingUpStatus, 3370 mCblk->sampleRate, 3371 mCblk->volume[0], 3372 mCblk->volume[1], 3373 mCblk->server, 3374 mCblk->user, 3375 (int)mMainBuffer, 3376 (int)mAuxBuffer); 3377} 3378 3379status_t AudioFlinger::PlaybackThread::Track::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3380{ 3381 audio_track_cblk_t* cblk = this->cblk(); 3382 uint32_t framesReady; 3383 uint32_t framesReq = buffer->frameCount; 3384 3385 // Check if last stepServer failed, try to step now 3386 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3387 if (!step()) goto getNextBuffer_exit; 3388 LOGV("stepServer recovered"); 3389 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3390 } 3391 3392 framesReady = cblk->framesReady(); 3393 3394 if (LIKELY(framesReady)) { 3395 uint32_t s = cblk->server; 3396 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3397 3398 bufferEnd = (cblk->loopEnd < bufferEnd) ? cblk->loopEnd : bufferEnd; 3399 if (framesReq > framesReady) { 3400 framesReq = framesReady; 3401 } 3402 if (s + framesReq > bufferEnd) { 3403 framesReq = bufferEnd - s; 3404 } 3405 3406 buffer->raw = getBuffer(s, framesReq); 3407 if (buffer->raw == 0) goto getNextBuffer_exit; 3408 3409 buffer->frameCount = framesReq; 3410 return NO_ERROR; 3411 } 3412 3413getNextBuffer_exit: 3414 buffer->raw = 0; 3415 buffer->frameCount = 0; 3416 LOGV("getNextBuffer() no more data for track %d on thread %p", mName, mThread.unsafe_get()); 3417 return NOT_ENOUGH_DATA; 3418} 3419 3420bool AudioFlinger::PlaybackThread::Track::isReady() const { 3421 if (mFillingUpStatus != FS_FILLING || isStopped() || isPausing()) return true; 3422 3423 if (mCblk->framesReady() >= mCblk->frameCount || 3424 (mCblk->flags & CBLK_FORCEREADY_MSK)) { 3425 mFillingUpStatus = FS_FILLED; 3426 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3427 return true; 3428 } 3429 return false; 3430} 3431 3432status_t AudioFlinger::PlaybackThread::Track::start() 3433{ 3434 status_t status = NO_ERROR; 3435 LOGV("start(%d), calling thread %d session %d", 3436 mName, IPCThreadState::self()->getCallingPid(), mSessionId); 3437 sp<ThreadBase> thread = mThread.promote(); 3438 if (thread != 0) { 3439 Mutex::Autolock _l(thread->mLock); 3440 int state = mState; 3441 // here the track could be either new, or restarted 3442 // in both cases "unstop" the track 3443 if (mState == PAUSED) { 3444 mState = TrackBase::RESUMING; 3445 LOGV("PAUSED => RESUMING (%d) on thread %p", mName, this); 3446 } else { 3447 mState = TrackBase::ACTIVE; 3448 LOGV("? => ACTIVE (%d) on thread %p", mName, this); 3449 } 3450 3451 if (!isOutputTrack() && state != ACTIVE && state != RESUMING) { 3452 thread->mLock.unlock(); 3453 status = AudioSystem::startOutput(thread->id(), 3454 (audio_stream_type_t)mStreamType, 3455 mSessionId); 3456 thread->mLock.lock(); 3457 3458 // to track the speaker usage 3459 if (status == NO_ERROR) { 3460 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStart); 3461 } 3462 } 3463 if (status == NO_ERROR) { 3464 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3465 playbackThread->addTrack_l(this); 3466 } else { 3467 mState = state; 3468 } 3469 } else { 3470 status = BAD_VALUE; 3471 } 3472 return status; 3473} 3474 3475void AudioFlinger::PlaybackThread::Track::stop() 3476{ 3477 LOGV("stop(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3478 sp<ThreadBase> thread = mThread.promote(); 3479 if (thread != 0) { 3480 Mutex::Autolock _l(thread->mLock); 3481 int state = mState; 3482 if (mState > STOPPED) { 3483 mState = STOPPED; 3484 // If the track is not active (PAUSED and buffers full), flush buffers 3485 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3486 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3487 reset(); 3488 } 3489 LOGV("(> STOPPED) => STOPPED (%d) on thread %p", mName, playbackThread); 3490 } 3491 if (!isOutputTrack() && (state == ACTIVE || state == RESUMING)) { 3492 thread->mLock.unlock(); 3493 AudioSystem::stopOutput(thread->id(), 3494 (audio_stream_type_t)mStreamType, 3495 mSessionId); 3496 thread->mLock.lock(); 3497 3498 // to track the speaker usage 3499 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3500 } 3501 } 3502} 3503 3504void AudioFlinger::PlaybackThread::Track::pause() 3505{ 3506 LOGV("pause(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3507 sp<ThreadBase> thread = mThread.promote(); 3508 if (thread != 0) { 3509 Mutex::Autolock _l(thread->mLock); 3510 if (mState == ACTIVE || mState == RESUMING) { 3511 mState = PAUSING; 3512 LOGV("ACTIVE/RESUMING => PAUSING (%d) on thread %p", mName, thread.get()); 3513 if (!isOutputTrack()) { 3514 thread->mLock.unlock(); 3515 AudioSystem::stopOutput(thread->id(), 3516 (audio_stream_type_t)mStreamType, 3517 mSessionId); 3518 thread->mLock.lock(); 3519 3520 // to track the speaker usage 3521 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3522 } 3523 } 3524 } 3525} 3526 3527void AudioFlinger::PlaybackThread::Track::flush() 3528{ 3529 LOGV("flush(%d)", mName); 3530 sp<ThreadBase> thread = mThread.promote(); 3531 if (thread != 0) { 3532 Mutex::Autolock _l(thread->mLock); 3533 if (mState != STOPPED && mState != PAUSED && mState != PAUSING) { 3534 return; 3535 } 3536 // No point remaining in PAUSED state after a flush => go to 3537 // STOPPED state 3538 mState = STOPPED; 3539 3540 // do not reset the track if it is still in the process of being stopped or paused. 3541 // this will be done by prepareTracks_l() when the track is stopped. 3542 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3543 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3544 reset(); 3545 } 3546 } 3547} 3548 3549void AudioFlinger::PlaybackThread::Track::reset() 3550{ 3551 // Do not reset twice to avoid discarding data written just after a flush and before 3552 // the audioflinger thread detects the track is stopped. 3553 if (!mResetDone) { 3554 TrackBase::reset(); 3555 // Force underrun condition to avoid false underrun callback until first data is 3556 // written to buffer 3557 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3558 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3559 mFillingUpStatus = FS_FILLING; 3560 mResetDone = true; 3561 } 3562} 3563 3564void AudioFlinger::PlaybackThread::Track::mute(bool muted) 3565{ 3566 mMute = muted; 3567} 3568 3569void AudioFlinger::PlaybackThread::Track::setVolume(float left, float right) 3570{ 3571 mVolume[0] = left; 3572 mVolume[1] = right; 3573} 3574 3575status_t AudioFlinger::PlaybackThread::Track::attachAuxEffect(int EffectId) 3576{ 3577 status_t status = DEAD_OBJECT; 3578 sp<ThreadBase> thread = mThread.promote(); 3579 if (thread != 0) { 3580 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3581 status = playbackThread->attachAuxEffect(this, EffectId); 3582 } 3583 return status; 3584} 3585 3586void AudioFlinger::PlaybackThread::Track::setAuxBuffer(int EffectId, int32_t *buffer) 3587{ 3588 mAuxEffectId = EffectId; 3589 mAuxBuffer = buffer; 3590} 3591 3592// ---------------------------------------------------------------------------- 3593 3594// RecordTrack constructor must be called with AudioFlinger::mLock held 3595AudioFlinger::RecordThread::RecordTrack::RecordTrack( 3596 const wp<ThreadBase>& thread, 3597 const sp<Client>& client, 3598 uint32_t sampleRate, 3599 uint32_t format, 3600 uint32_t channelMask, 3601 int frameCount, 3602 uint32_t flags, 3603 int sessionId) 3604 : TrackBase(thread, client, sampleRate, format, 3605 channelMask, frameCount, flags, 0, sessionId), 3606 mOverflow(false) 3607{ 3608 if (mCblk != NULL) { 3609 LOGV("RecordTrack constructor, size %d", (int)mBufferEnd - (int)mBuffer); 3610 if (format == AUDIO_FORMAT_PCM_16_BIT) { 3611 mCblk->frameSize = mChannelCount * sizeof(int16_t); 3612 } else if (format == AUDIO_FORMAT_PCM_8_BIT) { 3613 mCblk->frameSize = mChannelCount * sizeof(int8_t); 3614 } else { 3615 mCblk->frameSize = sizeof(int8_t); 3616 } 3617 } 3618} 3619 3620AudioFlinger::RecordThread::RecordTrack::~RecordTrack() 3621{ 3622 sp<ThreadBase> thread = mThread.promote(); 3623 if (thread != 0) { 3624 AudioSystem::releaseInput(thread->id()); 3625 } 3626} 3627 3628status_t AudioFlinger::RecordThread::RecordTrack::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3629{ 3630 audio_track_cblk_t* cblk = this->cblk(); 3631 uint32_t framesAvail; 3632 uint32_t framesReq = buffer->frameCount; 3633 3634 // Check if last stepServer failed, try to step now 3635 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3636 if (!step()) goto getNextBuffer_exit; 3637 LOGV("stepServer recovered"); 3638 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3639 } 3640 3641 framesAvail = cblk->framesAvailable_l(); 3642 3643 if (LIKELY(framesAvail)) { 3644 uint32_t s = cblk->server; 3645 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3646 3647 if (framesReq > framesAvail) { 3648 framesReq = framesAvail; 3649 } 3650 if (s + framesReq > bufferEnd) { 3651 framesReq = bufferEnd - s; 3652 } 3653 3654 buffer->raw = getBuffer(s, framesReq); 3655 if (buffer->raw == 0) goto getNextBuffer_exit; 3656 3657 buffer->frameCount = framesReq; 3658 return NO_ERROR; 3659 } 3660 3661getNextBuffer_exit: 3662 buffer->raw = 0; 3663 buffer->frameCount = 0; 3664 return NOT_ENOUGH_DATA; 3665} 3666 3667status_t AudioFlinger::RecordThread::RecordTrack::start() 3668{ 3669 sp<ThreadBase> thread = mThread.promote(); 3670 if (thread != 0) { 3671 RecordThread *recordThread = (RecordThread *)thread.get(); 3672 return recordThread->start(this); 3673 } else { 3674 return BAD_VALUE; 3675 } 3676} 3677 3678void AudioFlinger::RecordThread::RecordTrack::stop() 3679{ 3680 sp<ThreadBase> thread = mThread.promote(); 3681 if (thread != 0) { 3682 RecordThread *recordThread = (RecordThread *)thread.get(); 3683 recordThread->stop(this); 3684 TrackBase::reset(); 3685 // Force overerrun condition to avoid false overrun callback until first data is 3686 // read from buffer 3687 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3688 } 3689} 3690 3691void AudioFlinger::RecordThread::RecordTrack::dump(char* buffer, size_t size) 3692{ 3693 snprintf(buffer, size, " %05d %03u 0x%08x %05d %04u %01d %05u %08x %08x\n", 3694 (mClient == NULL) ? getpid() : mClient->pid(), 3695 mFormat, 3696 mChannelMask, 3697 mSessionId, 3698 mFrameCount, 3699 mState, 3700 mCblk->sampleRate, 3701 mCblk->server, 3702 mCblk->user); 3703} 3704 3705 3706// ---------------------------------------------------------------------------- 3707 3708AudioFlinger::PlaybackThread::OutputTrack::OutputTrack( 3709 const wp<ThreadBase>& thread, 3710 DuplicatingThread *sourceThread, 3711 uint32_t sampleRate, 3712 uint32_t format, 3713 uint32_t channelMask, 3714 int frameCount) 3715 : Track(thread, NULL, AUDIO_STREAM_CNT, sampleRate, format, channelMask, frameCount, NULL, 0), 3716 mActive(false), mSourceThread(sourceThread) 3717{ 3718 3719 PlaybackThread *playbackThread = (PlaybackThread *)thread.unsafe_get(); 3720 if (mCblk != NULL) { 3721 mCblk->flags |= CBLK_DIRECTION_OUT; 3722 mCblk->buffers = (char*)mCblk + sizeof(audio_track_cblk_t); 3723 mCblk->volume[0] = mCblk->volume[1] = 0x1000; 3724 mOutBuffer.frameCount = 0; 3725 playbackThread->mTracks.add(this); 3726 LOGV("OutputTrack constructor mCblk %p, mBuffer %p, mCblk->buffers %p, " \ 3727 "mCblk->frameCount %d, mCblk->sampleRate %d, mChannelMask 0x%08x mBufferEnd %p", 3728 mCblk, mBuffer, mCblk->buffers, 3729 mCblk->frameCount, mCblk->sampleRate, mChannelMask, mBufferEnd); 3730 } else { 3731 LOGW("Error creating output track on thread %p", playbackThread); 3732 } 3733} 3734 3735AudioFlinger::PlaybackThread::OutputTrack::~OutputTrack() 3736{ 3737 clearBufferQueue(); 3738} 3739 3740status_t AudioFlinger::PlaybackThread::OutputTrack::start() 3741{ 3742 status_t status = Track::start(); 3743 if (status != NO_ERROR) { 3744 return status; 3745 } 3746 3747 mActive = true; 3748 mRetryCount = 127; 3749 return status; 3750} 3751 3752void AudioFlinger::PlaybackThread::OutputTrack::stop() 3753{ 3754 Track::stop(); 3755 clearBufferQueue(); 3756 mOutBuffer.frameCount = 0; 3757 mActive = false; 3758} 3759 3760bool AudioFlinger::PlaybackThread::OutputTrack::write(int16_t* data, uint32_t frames) 3761{ 3762 Buffer *pInBuffer; 3763 Buffer inBuffer; 3764 uint32_t channelCount = mChannelCount; 3765 bool outputBufferFull = false; 3766 inBuffer.frameCount = frames; 3767 inBuffer.i16 = data; 3768 3769 uint32_t waitTimeLeftMs = mSourceThread->waitTimeMs(); 3770 3771 if (!mActive && frames != 0) { 3772 start(); 3773 sp<ThreadBase> thread = mThread.promote(); 3774 if (thread != 0) { 3775 MixerThread *mixerThread = (MixerThread *)thread.get(); 3776 if (mCblk->frameCount > frames){ 3777 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3778 uint32_t startFrames = (mCblk->frameCount - frames); 3779 pInBuffer = new Buffer; 3780 pInBuffer->mBuffer = new int16_t[startFrames * channelCount]; 3781 pInBuffer->frameCount = startFrames; 3782 pInBuffer->i16 = pInBuffer->mBuffer; 3783 memset(pInBuffer->raw, 0, startFrames * channelCount * sizeof(int16_t)); 3784 mBufferQueue.add(pInBuffer); 3785 } else { 3786 LOGW ("OutputTrack::write() %p no more buffers in queue", this); 3787 } 3788 } 3789 } 3790 } 3791 3792 while (waitTimeLeftMs) { 3793 // First write pending buffers, then new data 3794 if (mBufferQueue.size()) { 3795 pInBuffer = mBufferQueue.itemAt(0); 3796 } else { 3797 pInBuffer = &inBuffer; 3798 } 3799 3800 if (pInBuffer->frameCount == 0) { 3801 break; 3802 } 3803 3804 if (mOutBuffer.frameCount == 0) { 3805 mOutBuffer.frameCount = pInBuffer->frameCount; 3806 nsecs_t startTime = systemTime(); 3807 if (obtainBuffer(&mOutBuffer, waitTimeLeftMs) == (status_t)AudioTrack::NO_MORE_BUFFERS) { 3808 LOGV ("OutputTrack::write() %p thread %p no more output buffers", this, mThread.unsafe_get()); 3809 outputBufferFull = true; 3810 break; 3811 } 3812 uint32_t waitTimeMs = (uint32_t)ns2ms(systemTime() - startTime); 3813 if (waitTimeLeftMs >= waitTimeMs) { 3814 waitTimeLeftMs -= waitTimeMs; 3815 } else { 3816 waitTimeLeftMs = 0; 3817 } 3818 } 3819 3820 uint32_t outFrames = pInBuffer->frameCount > mOutBuffer.frameCount ? mOutBuffer.frameCount : pInBuffer->frameCount; 3821 memcpy(mOutBuffer.raw, pInBuffer->raw, outFrames * channelCount * sizeof(int16_t)); 3822 mCblk->stepUser(outFrames); 3823 pInBuffer->frameCount -= outFrames; 3824 pInBuffer->i16 += outFrames * channelCount; 3825 mOutBuffer.frameCount -= outFrames; 3826 mOutBuffer.i16 += outFrames * channelCount; 3827 3828 if (pInBuffer->frameCount == 0) { 3829 if (mBufferQueue.size()) { 3830 mBufferQueue.removeAt(0); 3831 delete [] pInBuffer->mBuffer; 3832 delete pInBuffer; 3833 LOGV("OutputTrack::write() %p thread %p released overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3834 } else { 3835 break; 3836 } 3837 } 3838 } 3839 3840 // If we could not write all frames, allocate a buffer and queue it for next time. 3841 if (inBuffer.frameCount) { 3842 sp<ThreadBase> thread = mThread.promote(); 3843 if (thread != 0 && !thread->standby()) { 3844 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3845 pInBuffer = new Buffer; 3846 pInBuffer->mBuffer = new int16_t[inBuffer.frameCount * channelCount]; 3847 pInBuffer->frameCount = inBuffer.frameCount; 3848 pInBuffer->i16 = pInBuffer->mBuffer; 3849 memcpy(pInBuffer->raw, inBuffer.raw, inBuffer.frameCount * channelCount * sizeof(int16_t)); 3850 mBufferQueue.add(pInBuffer); 3851 LOGV("OutputTrack::write() %p thread %p adding overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3852 } else { 3853 LOGW("OutputTrack::write() %p thread %p no more overflow buffers", mThread.unsafe_get(), this); 3854 } 3855 } 3856 } 3857 3858 // Calling write() with a 0 length buffer, means that no more data will be written: 3859 // If no more buffers are pending, fill output track buffer to make sure it is started 3860 // by output mixer. 3861 if (frames == 0 && mBufferQueue.size() == 0) { 3862 if (mCblk->user < mCblk->frameCount) { 3863 frames = mCblk->frameCount - mCblk->user; 3864 pInBuffer = new Buffer; 3865 pInBuffer->mBuffer = new int16_t[frames * channelCount]; 3866 pInBuffer->frameCount = frames; 3867 pInBuffer->i16 = pInBuffer->mBuffer; 3868 memset(pInBuffer->raw, 0, frames * channelCount * sizeof(int16_t)); 3869 mBufferQueue.add(pInBuffer); 3870 } else if (mActive) { 3871 stop(); 3872 } 3873 } 3874 3875 return outputBufferFull; 3876} 3877 3878status_t AudioFlinger::PlaybackThread::OutputTrack::obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs) 3879{ 3880 int active; 3881 status_t result; 3882 audio_track_cblk_t* cblk = mCblk; 3883 uint32_t framesReq = buffer->frameCount; 3884 3885// LOGV("OutputTrack::obtainBuffer user %d, server %d", cblk->user, cblk->server); 3886 buffer->frameCount = 0; 3887 3888 uint32_t framesAvail = cblk->framesAvailable(); 3889 3890 3891 if (framesAvail == 0) { 3892 Mutex::Autolock _l(cblk->lock); 3893 goto start_loop_here; 3894 while (framesAvail == 0) { 3895 active = mActive; 3896 if (UNLIKELY(!active)) { 3897 LOGV("Not active and NO_MORE_BUFFERS"); 3898 return AudioTrack::NO_MORE_BUFFERS; 3899 } 3900 result = cblk->cv.waitRelative(cblk->lock, milliseconds(waitTimeMs)); 3901 if (result != NO_ERROR) { 3902 return AudioTrack::NO_MORE_BUFFERS; 3903 } 3904 // read the server count again 3905 start_loop_here: 3906 framesAvail = cblk->framesAvailable_l(); 3907 } 3908 } 3909 3910// if (framesAvail < framesReq) { 3911// return AudioTrack::NO_MORE_BUFFERS; 3912// } 3913 3914 if (framesReq > framesAvail) { 3915 framesReq = framesAvail; 3916 } 3917 3918 uint32_t u = cblk->user; 3919 uint32_t bufferEnd = cblk->userBase + cblk->frameCount; 3920 3921 if (u + framesReq > bufferEnd) { 3922 framesReq = bufferEnd - u; 3923 } 3924 3925 buffer->frameCount = framesReq; 3926 buffer->raw = (void *)cblk->buffer(u); 3927 return NO_ERROR; 3928} 3929 3930 3931void AudioFlinger::PlaybackThread::OutputTrack::clearBufferQueue() 3932{ 3933 size_t size = mBufferQueue.size(); 3934 Buffer *pBuffer; 3935 3936 for (size_t i = 0; i < size; i++) { 3937 pBuffer = mBufferQueue.itemAt(i); 3938 delete [] pBuffer->mBuffer; 3939 delete pBuffer; 3940 } 3941 mBufferQueue.clear(); 3942} 3943 3944// ---------------------------------------------------------------------------- 3945 3946AudioFlinger::Client::Client(const sp<AudioFlinger>& audioFlinger, pid_t pid) 3947 : RefBase(), 3948 mAudioFlinger(audioFlinger), 3949 mMemoryDealer(new MemoryDealer(1024*1024, "AudioFlinger::Client")), 3950 mPid(pid) 3951{ 3952 // 1 MB of address space is good for 32 tracks, 8 buffers each, 4 KB/buffer 3953} 3954 3955// Client destructor must be called with AudioFlinger::mLock held 3956AudioFlinger::Client::~Client() 3957{ 3958 mAudioFlinger->removeClient_l(mPid); 3959} 3960 3961const sp<MemoryDealer>& AudioFlinger::Client::heap() const 3962{ 3963 return mMemoryDealer; 3964} 3965 3966// ---------------------------------------------------------------------------- 3967 3968AudioFlinger::NotificationClient::NotificationClient(const sp<AudioFlinger>& audioFlinger, 3969 const sp<IAudioFlingerClient>& client, 3970 pid_t pid) 3971 : mAudioFlinger(audioFlinger), mPid(pid), mClient(client) 3972{ 3973} 3974 3975AudioFlinger::NotificationClient::~NotificationClient() 3976{ 3977 mClient.clear(); 3978} 3979 3980void AudioFlinger::NotificationClient::binderDied(const wp<IBinder>& who) 3981{ 3982 sp<NotificationClient> keep(this); 3983 { 3984 mAudioFlinger->removeNotificationClient(mPid); 3985 } 3986} 3987 3988// ---------------------------------------------------------------------------- 3989 3990AudioFlinger::TrackHandle::TrackHandle(const sp<AudioFlinger::PlaybackThread::Track>& track) 3991 : BnAudioTrack(), 3992 mTrack(track) 3993{ 3994} 3995 3996AudioFlinger::TrackHandle::~TrackHandle() { 3997 // just stop the track on deletion, associated resources 3998 // will be freed from the main thread once all pending buffers have 3999 // been played. Unless it's not in the active track list, in which 4000 // case we free everything now... 4001 mTrack->destroy(); 4002} 4003 4004status_t AudioFlinger::TrackHandle::start() { 4005 return mTrack->start(); 4006} 4007 4008void AudioFlinger::TrackHandle::stop() { 4009 mTrack->stop(); 4010} 4011 4012void AudioFlinger::TrackHandle::flush() { 4013 mTrack->flush(); 4014} 4015 4016void AudioFlinger::TrackHandle::mute(bool e) { 4017 mTrack->mute(e); 4018} 4019 4020void AudioFlinger::TrackHandle::pause() { 4021 mTrack->pause(); 4022} 4023 4024void AudioFlinger::TrackHandle::setVolume(float left, float right) { 4025 mTrack->setVolume(left, right); 4026} 4027 4028sp<IMemory> AudioFlinger::TrackHandle::getCblk() const { 4029 return mTrack->getCblk(); 4030} 4031 4032status_t AudioFlinger::TrackHandle::attachAuxEffect(int EffectId) 4033{ 4034 return mTrack->attachAuxEffect(EffectId); 4035} 4036 4037status_t AudioFlinger::TrackHandle::onTransact( 4038 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 4039{ 4040 return BnAudioTrack::onTransact(code, data, reply, flags); 4041} 4042 4043// ---------------------------------------------------------------------------- 4044 4045sp<IAudioRecord> AudioFlinger::openRecord( 4046 pid_t pid, 4047 int input, 4048 uint32_t sampleRate, 4049 uint32_t format, 4050 uint32_t channelMask, 4051 int frameCount, 4052 uint32_t flags, 4053 int *sessionId, 4054 status_t *status) 4055{ 4056 sp<RecordThread::RecordTrack> recordTrack; 4057 sp<RecordHandle> recordHandle; 4058 sp<Client> client; 4059 wp<Client> wclient; 4060 status_t lStatus; 4061 RecordThread *thread; 4062 size_t inFrameCount; 4063 int lSessionId; 4064 4065 // check calling permissions 4066 if (!recordingAllowed()) { 4067 lStatus = PERMISSION_DENIED; 4068 goto Exit; 4069 } 4070 4071 // add client to list 4072 { // scope for mLock 4073 Mutex::Autolock _l(mLock); 4074 thread = checkRecordThread_l(input); 4075 if (thread == NULL) { 4076 lStatus = BAD_VALUE; 4077 goto Exit; 4078 } 4079 4080 wclient = mClients.valueFor(pid); 4081 if (wclient != NULL) { 4082 client = wclient.promote(); 4083 } else { 4084 client = new Client(this, pid); 4085 mClients.add(pid, client); 4086 } 4087 4088 // If no audio session id is provided, create one here 4089 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 4090 lSessionId = *sessionId; 4091 } else { 4092 lSessionId = nextUniqueId(); 4093 if (sessionId != NULL) { 4094 *sessionId = lSessionId; 4095 } 4096 } 4097 // create new record track. The record track uses one track in mHardwareMixerThread by convention. 4098 recordTrack = thread->createRecordTrack_l(client, 4099 sampleRate, 4100 format, 4101 channelMask, 4102 frameCount, 4103 flags, 4104 lSessionId, 4105 &lStatus); 4106 } 4107 if (lStatus != NO_ERROR) { 4108 // remove local strong reference to Client before deleting the RecordTrack so that the Client 4109 // destructor is called by the TrackBase destructor with mLock held 4110 client.clear(); 4111 recordTrack.clear(); 4112 goto Exit; 4113 } 4114 4115 // return to handle to client 4116 recordHandle = new RecordHandle(recordTrack); 4117 lStatus = NO_ERROR; 4118 4119Exit: 4120 if (status) { 4121 *status = lStatus; 4122 } 4123 return recordHandle; 4124} 4125 4126// ---------------------------------------------------------------------------- 4127 4128AudioFlinger::RecordHandle::RecordHandle(const sp<AudioFlinger::RecordThread::RecordTrack>& recordTrack) 4129 : BnAudioRecord(), 4130 mRecordTrack(recordTrack) 4131{ 4132} 4133 4134AudioFlinger::RecordHandle::~RecordHandle() { 4135 stop(); 4136} 4137 4138status_t AudioFlinger::RecordHandle::start() { 4139 LOGV("RecordHandle::start()"); 4140 return mRecordTrack->start(); 4141} 4142 4143void AudioFlinger::RecordHandle::stop() { 4144 LOGV("RecordHandle::stop()"); 4145 mRecordTrack->stop(); 4146} 4147 4148sp<IMemory> AudioFlinger::RecordHandle::getCblk() const { 4149 return mRecordTrack->getCblk(); 4150} 4151 4152status_t AudioFlinger::RecordHandle::onTransact( 4153 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 4154{ 4155 return BnAudioRecord::onTransact(code, data, reply, flags); 4156} 4157 4158// ---------------------------------------------------------------------------- 4159 4160AudioFlinger::RecordThread::RecordThread(const sp<AudioFlinger>& audioFlinger, 4161 AudioStreamIn *input, 4162 uint32_t sampleRate, 4163 uint32_t channels, 4164 int id, 4165 uint32_t device) : 4166 ThreadBase(audioFlinger, id, device), 4167 mInput(input), mTrack(NULL), mResampler(0), mRsmpOutBuffer(0), mRsmpInBuffer(0) 4168{ 4169 mType = ThreadBase::RECORD; 4170 4171 snprintf(mName, kNameLength, "AudioIn_%d", id); 4172 4173 mReqChannelCount = popcount(channels); 4174 mReqSampleRate = sampleRate; 4175 readInputParameters(); 4176} 4177 4178 4179AudioFlinger::RecordThread::~RecordThread() 4180{ 4181 delete[] mRsmpInBuffer; 4182 if (mResampler != 0) { 4183 delete mResampler; 4184 delete[] mRsmpOutBuffer; 4185 } 4186} 4187 4188void AudioFlinger::RecordThread::onFirstRef() 4189{ 4190 run(mName, PRIORITY_URGENT_AUDIO); 4191} 4192 4193status_t AudioFlinger::RecordThread::readyToRun() 4194{ 4195 status_t status = initCheck(); 4196 LOGW_IF(status != NO_ERROR,"RecordThread %p could not initialize", this); 4197 return status; 4198} 4199 4200bool AudioFlinger::RecordThread::threadLoop() 4201{ 4202 AudioBufferProvider::Buffer buffer; 4203 sp<RecordTrack> activeTrack; 4204 Vector< sp<EffectChain> > effectChains; 4205 4206 nsecs_t lastWarning = 0; 4207 4208 acquireWakeLock(); 4209 4210 // start recording 4211 while (!exitPending()) { 4212 4213 processConfigEvents(); 4214 4215 { // scope for mLock 4216 Mutex::Autolock _l(mLock); 4217 checkForNewParameters_l(); 4218 if (mActiveTrack == 0 && mConfigEvents.isEmpty()) { 4219 if (!mStandby) { 4220 mInput->stream->common.standby(&mInput->stream->common); 4221 mStandby = true; 4222 } 4223 4224 if (exitPending()) break; 4225 4226 releaseWakeLock_l(); 4227 LOGV("RecordThread: loop stopping"); 4228 // go to sleep 4229 mWaitWorkCV.wait(mLock); 4230 LOGV("RecordThread: loop starting"); 4231 acquireWakeLock_l(); 4232 continue; 4233 } 4234 if (mActiveTrack != 0) { 4235 if (mActiveTrack->mState == TrackBase::PAUSING) { 4236 if (!mStandby) { 4237 mInput->stream->common.standby(&mInput->stream->common); 4238 mStandby = true; 4239 } 4240 mActiveTrack.clear(); 4241 mStartStopCond.broadcast(); 4242 } else if (mActiveTrack->mState == TrackBase::RESUMING) { 4243 if (mReqChannelCount != mActiveTrack->channelCount()) { 4244 mActiveTrack.clear(); 4245 mStartStopCond.broadcast(); 4246 } else if (mBytesRead != 0) { 4247 // record start succeeds only if first read from audio input 4248 // succeeds 4249 if (mBytesRead > 0) { 4250 mActiveTrack->mState = TrackBase::ACTIVE; 4251 } else { 4252 mActiveTrack.clear(); 4253 } 4254 mStartStopCond.broadcast(); 4255 } 4256 mStandby = false; 4257 } 4258 } 4259 lockEffectChains_l(effectChains); 4260 } 4261 4262 if (mActiveTrack != 0) { 4263 if (mActiveTrack->mState != TrackBase::ACTIVE && 4264 mActiveTrack->mState != TrackBase::RESUMING) { 4265 unlockEffectChains(effectChains); 4266 usleep(kRecordThreadSleepUs); 4267 continue; 4268 } 4269 for (size_t i = 0; i < effectChains.size(); i ++) { 4270 effectChains[i]->process_l(); 4271 } 4272 4273 buffer.frameCount = mFrameCount; 4274 if (LIKELY(mActiveTrack->getNextBuffer(&buffer) == NO_ERROR)) { 4275 size_t framesOut = buffer.frameCount; 4276 if (mResampler == 0) { 4277 // no resampling 4278 while (framesOut) { 4279 size_t framesIn = mFrameCount - mRsmpInIndex; 4280 if (framesIn) { 4281 int8_t *src = (int8_t *)mRsmpInBuffer + mRsmpInIndex * mFrameSize; 4282 int8_t *dst = buffer.i8 + (buffer.frameCount - framesOut) * mActiveTrack->mCblk->frameSize; 4283 if (framesIn > framesOut) 4284 framesIn = framesOut; 4285 mRsmpInIndex += framesIn; 4286 framesOut -= framesIn; 4287 if ((int)mChannelCount == mReqChannelCount || 4288 mFormat != AUDIO_FORMAT_PCM_16_BIT) { 4289 memcpy(dst, src, framesIn * mFrameSize); 4290 } else { 4291 int16_t *src16 = (int16_t *)src; 4292 int16_t *dst16 = (int16_t *)dst; 4293 if (mChannelCount == 1) { 4294 while (framesIn--) { 4295 *dst16++ = *src16; 4296 *dst16++ = *src16++; 4297 } 4298 } else { 4299 while (framesIn--) { 4300 *dst16++ = (int16_t)(((int32_t)*src16 + (int32_t)*(src16 + 1)) >> 1); 4301 src16 += 2; 4302 } 4303 } 4304 } 4305 } 4306 if (framesOut && mFrameCount == mRsmpInIndex) { 4307 if (framesOut == mFrameCount && 4308 ((int)mChannelCount == mReqChannelCount || mFormat != AUDIO_FORMAT_PCM_16_BIT)) { 4309 mBytesRead = mInput->stream->read(mInput->stream, buffer.raw, mInputBytes); 4310 framesOut = 0; 4311 } else { 4312 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 4313 mRsmpInIndex = 0; 4314 } 4315 if (mBytesRead < 0) { 4316 LOGE("Error reading audio input"); 4317 if (mActiveTrack->mState == TrackBase::ACTIVE) { 4318 // Force input into standby so that it tries to 4319 // recover at next read attempt 4320 mInput->stream->common.standby(&mInput->stream->common); 4321 usleep(kRecordThreadSleepUs); 4322 } 4323 mRsmpInIndex = mFrameCount; 4324 framesOut = 0; 4325 buffer.frameCount = 0; 4326 } 4327 } 4328 } 4329 } else { 4330 // resampling 4331 4332 memset(mRsmpOutBuffer, 0, framesOut * 2 * sizeof(int32_t)); 4333 // alter output frame count as if we were expecting stereo samples 4334 if (mChannelCount == 1 && mReqChannelCount == 1) { 4335 framesOut >>= 1; 4336 } 4337 mResampler->resample(mRsmpOutBuffer, framesOut, this); 4338 // ditherAndClamp() works as long as all buffers returned by mActiveTrack->getNextBuffer() 4339 // are 32 bit aligned which should be always true. 4340 if (mChannelCount == 2 && mReqChannelCount == 1) { 4341 AudioMixer::ditherAndClamp(mRsmpOutBuffer, mRsmpOutBuffer, framesOut); 4342 // the resampler always outputs stereo samples: do post stereo to mono conversion 4343 int16_t *src = (int16_t *)mRsmpOutBuffer; 4344 int16_t *dst = buffer.i16; 4345 while (framesOut--) { 4346 *dst++ = (int16_t)(((int32_t)*src + (int32_t)*(src + 1)) >> 1); 4347 src += 2; 4348 } 4349 } else { 4350 AudioMixer::ditherAndClamp((int32_t *)buffer.raw, mRsmpOutBuffer, framesOut); 4351 } 4352 4353 } 4354 mActiveTrack->releaseBuffer(&buffer); 4355 mActiveTrack->overflow(); 4356 } 4357 // client isn't retrieving buffers fast enough 4358 else { 4359 if (!mActiveTrack->setOverflow()) { 4360 nsecs_t now = systemTime(); 4361 if ((now - lastWarning) > kWarningThrottle) { 4362 LOGW("RecordThread: buffer overflow"); 4363 lastWarning = now; 4364 } 4365 } 4366 // Release the processor for a while before asking for a new buffer. 4367 // This will give the application more chance to read from the buffer and 4368 // clear the overflow. 4369 usleep(kRecordThreadSleepUs); 4370 } 4371 } 4372 // enable changes in effect chain 4373 unlockEffectChains(effectChains); 4374 effectChains.clear(); 4375 } 4376 4377 if (!mStandby) { 4378 mInput->stream->common.standby(&mInput->stream->common); 4379 } 4380 mActiveTrack.clear(); 4381 4382 mStartStopCond.broadcast(); 4383 4384 releaseWakeLock(); 4385 4386 LOGV("RecordThread %p exiting", this); 4387 return false; 4388} 4389 4390 4391sp<AudioFlinger::RecordThread::RecordTrack> AudioFlinger::RecordThread::createRecordTrack_l( 4392 const sp<AudioFlinger::Client>& client, 4393 uint32_t sampleRate, 4394 int format, 4395 int channelMask, 4396 int frameCount, 4397 uint32_t flags, 4398 int sessionId, 4399 status_t *status) 4400{ 4401 sp<RecordTrack> track; 4402 status_t lStatus; 4403 4404 lStatus = initCheck(); 4405 if (lStatus != NO_ERROR) { 4406 LOGE("Audio driver not initialized."); 4407 goto Exit; 4408 } 4409 4410 { // scope for mLock 4411 Mutex::Autolock _l(mLock); 4412 4413 track = new RecordTrack(this, client, sampleRate, 4414 format, channelMask, frameCount, flags, sessionId); 4415 4416 if (track->getCblk() == NULL) { 4417 lStatus = NO_MEMORY; 4418 goto Exit; 4419 } 4420 4421 mTrack = track.get(); 4422 // disable AEC and NS if the device is a BT SCO headset supporting those pre processings 4423 bool suspend = audio_is_bluetooth_sco_device( 4424 (audio_devices_t)(mDevice & AUDIO_DEVICE_IN_ALL)) && mAudioFlinger->btNrecIsOff(); 4425 setEffectSuspended_l(FX_IID_AEC, suspend, sessionId); 4426 setEffectSuspended_l(FX_IID_NS, suspend, sessionId); 4427 } 4428 lStatus = NO_ERROR; 4429 4430Exit: 4431 if (status) { 4432 *status = lStatus; 4433 } 4434 return track; 4435} 4436 4437status_t AudioFlinger::RecordThread::start(RecordThread::RecordTrack* recordTrack) 4438{ 4439 LOGV("RecordThread::start"); 4440 sp <ThreadBase> strongMe = this; 4441 status_t status = NO_ERROR; 4442 { 4443 AutoMutex lock(&mLock); 4444 if (mActiveTrack != 0) { 4445 if (recordTrack != mActiveTrack.get()) { 4446 status = -EBUSY; 4447 } else if (mActiveTrack->mState == TrackBase::PAUSING) { 4448 mActiveTrack->mState = TrackBase::ACTIVE; 4449 } 4450 return status; 4451 } 4452 4453 recordTrack->mState = TrackBase::IDLE; 4454 mActiveTrack = recordTrack; 4455 mLock.unlock(); 4456 status_t status = AudioSystem::startInput(mId); 4457 mLock.lock(); 4458 if (status != NO_ERROR) { 4459 mActiveTrack.clear(); 4460 return status; 4461 } 4462 mRsmpInIndex = mFrameCount; 4463 mBytesRead = 0; 4464 if (mResampler != NULL) { 4465 mResampler->reset(); 4466 } 4467 mActiveTrack->mState = TrackBase::RESUMING; 4468 // signal thread to start 4469 LOGV("Signal record thread"); 4470 mWaitWorkCV.signal(); 4471 // do not wait for mStartStopCond if exiting 4472 if (mExiting) { 4473 mActiveTrack.clear(); 4474 status = INVALID_OPERATION; 4475 goto startError; 4476 } 4477 mStartStopCond.wait(mLock); 4478 if (mActiveTrack == 0) { 4479 LOGV("Record failed to start"); 4480 status = BAD_VALUE; 4481 goto startError; 4482 } 4483 LOGV("Record started OK"); 4484 return status; 4485 } 4486startError: 4487 AudioSystem::stopInput(mId); 4488 return status; 4489} 4490 4491void AudioFlinger::RecordThread::stop(RecordThread::RecordTrack* recordTrack) { 4492 LOGV("RecordThread::stop"); 4493 sp <ThreadBase> strongMe = this; 4494 { 4495 AutoMutex lock(&mLock); 4496 if (mActiveTrack != 0 && recordTrack == mActiveTrack.get()) { 4497 mActiveTrack->mState = TrackBase::PAUSING; 4498 // do not wait for mStartStopCond if exiting 4499 if (mExiting) { 4500 return; 4501 } 4502 mStartStopCond.wait(mLock); 4503 // if we have been restarted, recordTrack == mActiveTrack.get() here 4504 if (mActiveTrack == 0 || recordTrack != mActiveTrack.get()) { 4505 mLock.unlock(); 4506 AudioSystem::stopInput(mId); 4507 mLock.lock(); 4508 LOGV("Record stopped OK"); 4509 } 4510 } 4511 } 4512} 4513 4514status_t AudioFlinger::RecordThread::dump(int fd, const Vector<String16>& args) 4515{ 4516 const size_t SIZE = 256; 4517 char buffer[SIZE]; 4518 String8 result; 4519 pid_t pid = 0; 4520 4521 snprintf(buffer, SIZE, "\nInput thread %p internals\n", this); 4522 result.append(buffer); 4523 4524 if (mActiveTrack != 0) { 4525 result.append("Active Track:\n"); 4526 result.append(" Clien Fmt Chn mask Session Buf S SRate Serv User\n"); 4527 mActiveTrack->dump(buffer, SIZE); 4528 result.append(buffer); 4529 4530 snprintf(buffer, SIZE, "In index: %d\n", mRsmpInIndex); 4531 result.append(buffer); 4532 snprintf(buffer, SIZE, "In size: %d\n", mInputBytes); 4533 result.append(buffer); 4534 snprintf(buffer, SIZE, "Resampling: %d\n", (mResampler != 0)); 4535 result.append(buffer); 4536 snprintf(buffer, SIZE, "Out channel count: %d\n", mReqChannelCount); 4537 result.append(buffer); 4538 snprintf(buffer, SIZE, "Out sample rate: %d\n", mReqSampleRate); 4539 result.append(buffer); 4540 4541 4542 } else { 4543 result.append("No record client\n"); 4544 } 4545 write(fd, result.string(), result.size()); 4546 4547 dumpBase(fd, args); 4548 dumpEffectChains(fd, args); 4549 4550 return NO_ERROR; 4551} 4552 4553status_t AudioFlinger::RecordThread::getNextBuffer(AudioBufferProvider::Buffer* buffer) 4554{ 4555 size_t framesReq = buffer->frameCount; 4556 size_t framesReady = mFrameCount - mRsmpInIndex; 4557 int channelCount; 4558 4559 if (framesReady == 0) { 4560 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 4561 if (mBytesRead < 0) { 4562 LOGE("RecordThread::getNextBuffer() Error reading audio input"); 4563 if (mActiveTrack->mState == TrackBase::ACTIVE) { 4564 // Force input into standby so that it tries to 4565 // recover at next read attempt 4566 mInput->stream->common.standby(&mInput->stream->common); 4567 usleep(kRecordThreadSleepUs); 4568 } 4569 buffer->raw = 0; 4570 buffer->frameCount = 0; 4571 return NOT_ENOUGH_DATA; 4572 } 4573 mRsmpInIndex = 0; 4574 framesReady = mFrameCount; 4575 } 4576 4577 if (framesReq > framesReady) { 4578 framesReq = framesReady; 4579 } 4580 4581 if (mChannelCount == 1 && mReqChannelCount == 2) { 4582 channelCount = 1; 4583 } else { 4584 channelCount = 2; 4585 } 4586 buffer->raw = mRsmpInBuffer + mRsmpInIndex * channelCount; 4587 buffer->frameCount = framesReq; 4588 return NO_ERROR; 4589} 4590 4591void AudioFlinger::RecordThread::releaseBuffer(AudioBufferProvider::Buffer* buffer) 4592{ 4593 mRsmpInIndex += buffer->frameCount; 4594 buffer->frameCount = 0; 4595} 4596 4597bool AudioFlinger::RecordThread::checkForNewParameters_l() 4598{ 4599 bool reconfig = false; 4600 4601 while (!mNewParameters.isEmpty()) { 4602 status_t status = NO_ERROR; 4603 String8 keyValuePair = mNewParameters[0]; 4604 AudioParameter param = AudioParameter(keyValuePair); 4605 int value; 4606 int reqFormat = mFormat; 4607 int reqSamplingRate = mReqSampleRate; 4608 int reqChannelCount = mReqChannelCount; 4609 4610 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 4611 reqSamplingRate = value; 4612 reconfig = true; 4613 } 4614 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 4615 reqFormat = value; 4616 reconfig = true; 4617 } 4618 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 4619 reqChannelCount = popcount(value); 4620 reconfig = true; 4621 } 4622 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 4623 // do not accept frame count changes if tracks are open as the track buffer 4624 // size depends on frame count and correct behavior would not be garantied 4625 // if frame count is changed after track creation 4626 if (mActiveTrack != 0) { 4627 status = INVALID_OPERATION; 4628 } else { 4629 reconfig = true; 4630 } 4631 } 4632 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 4633 // forward device change to effects that have requested to be 4634 // aware of attached audio device. 4635 for (size_t i = 0; i < mEffectChains.size(); i++) { 4636 mEffectChains[i]->setDevice_l(value); 4637 } 4638 // store input device and output device but do not forward output device to audio HAL. 4639 // Note that status is ignored by the caller for output device 4640 // (see AudioFlinger::setParameters() 4641 if (value & AUDIO_DEVICE_OUT_ALL) { 4642 mDevice &= (uint32_t)~(value & AUDIO_DEVICE_OUT_ALL); 4643 status = BAD_VALUE; 4644 } else { 4645 mDevice &= (uint32_t)~(value & AUDIO_DEVICE_IN_ALL); 4646 // disable AEC and NS if the device is a BT SCO headset supporting those pre processings 4647 if (mTrack != NULL) { 4648 bool suspend = audio_is_bluetooth_sco_device( 4649 (audio_devices_t)value) && mAudioFlinger->btNrecIsOff(); 4650 setEffectSuspended_l(FX_IID_AEC, suspend, mTrack->sessionId()); 4651 setEffectSuspended_l(FX_IID_NS, suspend, mTrack->sessionId()); 4652 } 4653 } 4654 mDevice |= (uint32_t)value; 4655 } 4656 if (status == NO_ERROR) { 4657 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4658 if (status == INVALID_OPERATION) { 4659 mInput->stream->common.standby(&mInput->stream->common); 4660 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4661 } 4662 if (reconfig) { 4663 if (status == BAD_VALUE && 4664 reqFormat == mInput->stream->common.get_format(&mInput->stream->common) && 4665 reqFormat == AUDIO_FORMAT_PCM_16_BIT && 4666 ((int)mInput->stream->common.get_sample_rate(&mInput->stream->common) <= (2 * reqSamplingRate)) && 4667 (popcount(mInput->stream->common.get_channels(&mInput->stream->common)) < 3) && 4668 (reqChannelCount < 3)) { 4669 status = NO_ERROR; 4670 } 4671 if (status == NO_ERROR) { 4672 readInputParameters(); 4673 sendConfigEvent_l(AudioSystem::INPUT_CONFIG_CHANGED); 4674 } 4675 } 4676 } 4677 4678 mNewParameters.removeAt(0); 4679 4680 mParamStatus = status; 4681 mParamCond.signal(); 4682 // wait for condition with time out in case the thread calling ThreadBase::setParameters() 4683 // already timed out waiting for the status and will never signal the condition. 4684 mWaitWorkCV.waitRelative(mLock, kSetParametersTimeout); 4685 } 4686 return reconfig; 4687} 4688 4689String8 AudioFlinger::RecordThread::getParameters(const String8& keys) 4690{ 4691 char *s; 4692 String8 out_s8 = String8(); 4693 4694 Mutex::Autolock _l(mLock); 4695 if (initCheck() != NO_ERROR) { 4696 return out_s8; 4697 } 4698 4699 s = mInput->stream->common.get_parameters(&mInput->stream->common, keys.string()); 4700 out_s8 = String8(s); 4701 free(s); 4702 return out_s8; 4703} 4704 4705void AudioFlinger::RecordThread::audioConfigChanged_l(int event, int param) { 4706 AudioSystem::OutputDescriptor desc; 4707 void *param2 = 0; 4708 4709 switch (event) { 4710 case AudioSystem::INPUT_OPENED: 4711 case AudioSystem::INPUT_CONFIG_CHANGED: 4712 desc.channels = mChannelMask; 4713 desc.samplingRate = mSampleRate; 4714 desc.format = mFormat; 4715 desc.frameCount = mFrameCount; 4716 desc.latency = 0; 4717 param2 = &desc; 4718 break; 4719 4720 case AudioSystem::INPUT_CLOSED: 4721 default: 4722 break; 4723 } 4724 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 4725} 4726 4727void AudioFlinger::RecordThread::readInputParameters() 4728{ 4729 if (mRsmpInBuffer) delete mRsmpInBuffer; 4730 if (mRsmpOutBuffer) delete mRsmpOutBuffer; 4731 if (mResampler) delete mResampler; 4732 mResampler = 0; 4733 4734 mSampleRate = mInput->stream->common.get_sample_rate(&mInput->stream->common); 4735 mChannelMask = mInput->stream->common.get_channels(&mInput->stream->common); 4736 mChannelCount = (uint16_t)popcount(mChannelMask); 4737 mFormat = mInput->stream->common.get_format(&mInput->stream->common); 4738 mFrameSize = (uint16_t)audio_stream_frame_size(&mInput->stream->common); 4739 mInputBytes = mInput->stream->common.get_buffer_size(&mInput->stream->common); 4740 mFrameCount = mInputBytes / mFrameSize; 4741 mRsmpInBuffer = new int16_t[mFrameCount * mChannelCount]; 4742 4743 if (mSampleRate != mReqSampleRate && mChannelCount < 3 && mReqChannelCount < 3) 4744 { 4745 int channelCount; 4746 // optmization: if mono to mono, use the resampler in stereo to stereo mode to avoid 4747 // stereo to mono post process as the resampler always outputs stereo. 4748 if (mChannelCount == 1 && mReqChannelCount == 2) { 4749 channelCount = 1; 4750 } else { 4751 channelCount = 2; 4752 } 4753 mResampler = AudioResampler::create(16, channelCount, mReqSampleRate); 4754 mResampler->setSampleRate(mSampleRate); 4755 mResampler->setVolume(AudioMixer::UNITY_GAIN, AudioMixer::UNITY_GAIN); 4756 mRsmpOutBuffer = new int32_t[mFrameCount * 2]; 4757 4758 // optmization: if mono to mono, alter input frame count as if we were inputing stereo samples 4759 if (mChannelCount == 1 && mReqChannelCount == 1) { 4760 mFrameCount >>= 1; 4761 } 4762 4763 } 4764 mRsmpInIndex = mFrameCount; 4765} 4766 4767unsigned int AudioFlinger::RecordThread::getInputFramesLost() 4768{ 4769 Mutex::Autolock _l(mLock); 4770 if (initCheck() != NO_ERROR) { 4771 return 0; 4772 } 4773 4774 return mInput->stream->get_input_frames_lost(mInput->stream); 4775} 4776 4777uint32_t AudioFlinger::RecordThread::hasAudioSession(int sessionId) 4778{ 4779 Mutex::Autolock _l(mLock); 4780 uint32_t result = 0; 4781 if (getEffectChain_l(sessionId) != 0) { 4782 result = EFFECT_SESSION; 4783 } 4784 4785 if (mTrack != NULL && sessionId == mTrack->sessionId()) { 4786 result |= TRACK_SESSION; 4787 } 4788 4789 return result; 4790} 4791 4792AudioFlinger::RecordThread::RecordTrack* AudioFlinger::RecordThread::track() 4793{ 4794 Mutex::Autolock _l(mLock); 4795 return mTrack; 4796} 4797 4798AudioFlinger::AudioStreamIn* AudioFlinger::RecordThread::getInput() 4799{ 4800 Mutex::Autolock _l(mLock); 4801 return mInput; 4802} 4803 4804AudioFlinger::AudioStreamIn* AudioFlinger::RecordThread::clearInput() 4805{ 4806 Mutex::Autolock _l(mLock); 4807 AudioStreamIn *input = mInput; 4808 mInput = NULL; 4809 return input; 4810} 4811 4812// this method must always be called either with ThreadBase mLock held or inside the thread loop 4813audio_stream_t* AudioFlinger::RecordThread::stream() 4814{ 4815 if (mInput == NULL) { 4816 return NULL; 4817 } 4818 return &mInput->stream->common; 4819} 4820 4821 4822// ---------------------------------------------------------------------------- 4823 4824int AudioFlinger::openOutput(uint32_t *pDevices, 4825 uint32_t *pSamplingRate, 4826 uint32_t *pFormat, 4827 uint32_t *pChannels, 4828 uint32_t *pLatencyMs, 4829 uint32_t flags) 4830{ 4831 status_t status; 4832 PlaybackThread *thread = NULL; 4833 mHardwareStatus = AUDIO_HW_OUTPUT_OPEN; 4834 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4835 uint32_t format = pFormat ? *pFormat : 0; 4836 uint32_t channels = pChannels ? *pChannels : 0; 4837 uint32_t latency = pLatencyMs ? *pLatencyMs : 0; 4838 audio_stream_out_t *outStream; 4839 audio_hw_device_t *outHwDev; 4840 4841 LOGV("openOutput(), Device %x, SamplingRate %d, Format %d, Channels %x, flags %x", 4842 pDevices ? *pDevices : 0, 4843 samplingRate, 4844 format, 4845 channels, 4846 flags); 4847 4848 if (pDevices == NULL || *pDevices == 0) { 4849 return 0; 4850 } 4851 4852 Mutex::Autolock _l(mLock); 4853 4854 outHwDev = findSuitableHwDev_l(*pDevices); 4855 if (outHwDev == NULL) 4856 return 0; 4857 4858 status = outHwDev->open_output_stream(outHwDev, *pDevices, (int *)&format, 4859 &channels, &samplingRate, &outStream); 4860 LOGV("openOutput() openOutputStream returned output %p, SamplingRate %d, Format %d, Channels %x, status %d", 4861 outStream, 4862 samplingRate, 4863 format, 4864 channels, 4865 status); 4866 4867 mHardwareStatus = AUDIO_HW_IDLE; 4868 if (outStream != NULL) { 4869 AudioStreamOut *output = new AudioStreamOut(outHwDev, outStream); 4870 int id = nextUniqueId(); 4871 4872 if ((flags & AUDIO_POLICY_OUTPUT_FLAG_DIRECT) || 4873 (format != AUDIO_FORMAT_PCM_16_BIT) || 4874 (channels != AUDIO_CHANNEL_OUT_STEREO)) { 4875 thread = new DirectOutputThread(this, output, id, *pDevices); 4876 LOGV("openOutput() created direct output: ID %d thread %p", id, thread); 4877 } else { 4878 thread = new MixerThread(this, output, id, *pDevices); 4879 LOGV("openOutput() created mixer output: ID %d thread %p", id, thread); 4880 } 4881 mPlaybackThreads.add(id, thread); 4882 4883 if (pSamplingRate) *pSamplingRate = samplingRate; 4884 if (pFormat) *pFormat = format; 4885 if (pChannels) *pChannels = channels; 4886 if (pLatencyMs) *pLatencyMs = thread->latency(); 4887 4888 // notify client processes of the new output creation 4889 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4890 return id; 4891 } 4892 4893 return 0; 4894} 4895 4896int AudioFlinger::openDuplicateOutput(int output1, int output2) 4897{ 4898 Mutex::Autolock _l(mLock); 4899 MixerThread *thread1 = checkMixerThread_l(output1); 4900 MixerThread *thread2 = checkMixerThread_l(output2); 4901 4902 if (thread1 == NULL || thread2 == NULL) { 4903 LOGW("openDuplicateOutput() wrong output mixer type for output %d or %d", output1, output2); 4904 return 0; 4905 } 4906 4907 int id = nextUniqueId(); 4908 DuplicatingThread *thread = new DuplicatingThread(this, thread1, id); 4909 thread->addOutputTrack(thread2); 4910 mPlaybackThreads.add(id, thread); 4911 // notify client processes of the new output creation 4912 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4913 return id; 4914} 4915 4916status_t AudioFlinger::closeOutput(int output) 4917{ 4918 // keep strong reference on the playback thread so that 4919 // it is not destroyed while exit() is executed 4920 sp <PlaybackThread> thread; 4921 { 4922 Mutex::Autolock _l(mLock); 4923 thread = checkPlaybackThread_l(output); 4924 if (thread == NULL) { 4925 return BAD_VALUE; 4926 } 4927 4928 LOGV("closeOutput() %d", output); 4929 4930 if (thread->type() == ThreadBase::MIXER) { 4931 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4932 if (mPlaybackThreads.valueAt(i)->type() == ThreadBase::DUPLICATING) { 4933 DuplicatingThread *dupThread = (DuplicatingThread *)mPlaybackThreads.valueAt(i).get(); 4934 dupThread->removeOutputTrack((MixerThread *)thread.get()); 4935 } 4936 } 4937 } 4938 void *param2 = 0; 4939 audioConfigChanged_l(AudioSystem::OUTPUT_CLOSED, output, param2); 4940 mPlaybackThreads.removeItem(output); 4941 } 4942 thread->exit(); 4943 4944 if (thread->type() != ThreadBase::DUPLICATING) { 4945 AudioStreamOut *out = thread->clearOutput(); 4946 // from now on thread->mOutput is NULL 4947 out->hwDev->close_output_stream(out->hwDev, out->stream); 4948 delete out; 4949 } 4950 return NO_ERROR; 4951} 4952 4953status_t AudioFlinger::suspendOutput(int output) 4954{ 4955 Mutex::Autolock _l(mLock); 4956 PlaybackThread *thread = checkPlaybackThread_l(output); 4957 4958 if (thread == NULL) { 4959 return BAD_VALUE; 4960 } 4961 4962 LOGV("suspendOutput() %d", output); 4963 thread->suspend(); 4964 4965 return NO_ERROR; 4966} 4967 4968status_t AudioFlinger::restoreOutput(int output) 4969{ 4970 Mutex::Autolock _l(mLock); 4971 PlaybackThread *thread = checkPlaybackThread_l(output); 4972 4973 if (thread == NULL) { 4974 return BAD_VALUE; 4975 } 4976 4977 LOGV("restoreOutput() %d", output); 4978 4979 thread->restore(); 4980 4981 return NO_ERROR; 4982} 4983 4984int AudioFlinger::openInput(uint32_t *pDevices, 4985 uint32_t *pSamplingRate, 4986 uint32_t *pFormat, 4987 uint32_t *pChannels, 4988 uint32_t acoustics) 4989{ 4990 status_t status; 4991 RecordThread *thread = NULL; 4992 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4993 uint32_t format = pFormat ? *pFormat : 0; 4994 uint32_t channels = pChannels ? *pChannels : 0; 4995 uint32_t reqSamplingRate = samplingRate; 4996 uint32_t reqFormat = format; 4997 uint32_t reqChannels = channels; 4998 audio_stream_in_t *inStream; 4999 audio_hw_device_t *inHwDev; 5000 5001 if (pDevices == NULL || *pDevices == 0) { 5002 return 0; 5003 } 5004 5005 Mutex::Autolock _l(mLock); 5006 5007 inHwDev = findSuitableHwDev_l(*pDevices); 5008 if (inHwDev == NULL) 5009 return 0; 5010 5011 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 5012 &channels, &samplingRate, 5013 (audio_in_acoustics_t)acoustics, 5014 &inStream); 5015 LOGV("openInput() openInputStream returned input %p, SamplingRate %d, Format %d, Channels %x, acoustics %x, status %d", 5016 inStream, 5017 samplingRate, 5018 format, 5019 channels, 5020 acoustics, 5021 status); 5022 5023 // If the input could not be opened with the requested parameters and we can handle the conversion internally, 5024 // try to open again with the proposed parameters. The AudioFlinger can resample the input and do mono to stereo 5025 // or stereo to mono conversions on 16 bit PCM inputs. 5026 if (inStream == NULL && status == BAD_VALUE && 5027 reqFormat == format && format == AUDIO_FORMAT_PCM_16_BIT && 5028 (samplingRate <= 2 * reqSamplingRate) && 5029 (popcount(channels) < 3) && (popcount(reqChannels) < 3)) { 5030 LOGV("openInput() reopening with proposed sampling rate and channels"); 5031 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 5032 &channels, &samplingRate, 5033 (audio_in_acoustics_t)acoustics, 5034 &inStream); 5035 } 5036 5037 if (inStream != NULL) { 5038 AudioStreamIn *input = new AudioStreamIn(inHwDev, inStream); 5039 5040 int id = nextUniqueId(); 5041 // Start record thread 5042 // RecorThread require both input and output device indication to forward to audio 5043 // pre processing modules 5044 uint32_t device = (*pDevices) | primaryOutputDevice_l(); 5045 thread = new RecordThread(this, 5046 input, 5047 reqSamplingRate, 5048 reqChannels, 5049 id, 5050 device); 5051 mRecordThreads.add(id, thread); 5052 LOGV("openInput() created record thread: ID %d thread %p", id, thread); 5053 if (pSamplingRate) *pSamplingRate = reqSamplingRate; 5054 if (pFormat) *pFormat = format; 5055 if (pChannels) *pChannels = reqChannels; 5056 5057 input->stream->common.standby(&input->stream->common); 5058 5059 // notify client processes of the new input creation 5060 thread->audioConfigChanged_l(AudioSystem::INPUT_OPENED); 5061 return id; 5062 } 5063 5064 return 0; 5065} 5066 5067status_t AudioFlinger::closeInput(int input) 5068{ 5069 // keep strong reference on the record thread so that 5070 // it is not destroyed while exit() is executed 5071 sp <RecordThread> thread; 5072 { 5073 Mutex::Autolock _l(mLock); 5074 thread = checkRecordThread_l(input); 5075 if (thread == NULL) { 5076 return BAD_VALUE; 5077 } 5078 5079 LOGV("closeInput() %d", input); 5080 void *param2 = 0; 5081 audioConfigChanged_l(AudioSystem::INPUT_CLOSED, input, param2); 5082 mRecordThreads.removeItem(input); 5083 } 5084 thread->exit(); 5085 5086 AudioStreamIn *in = thread->clearInput(); 5087 // from now on thread->mInput is NULL 5088 in->hwDev->close_input_stream(in->hwDev, in->stream); 5089 delete in; 5090 5091 return NO_ERROR; 5092} 5093 5094status_t AudioFlinger::setStreamOutput(uint32_t stream, int output) 5095{ 5096 Mutex::Autolock _l(mLock); 5097 MixerThread *dstThread = checkMixerThread_l(output); 5098 if (dstThread == NULL) { 5099 LOGW("setStreamOutput() bad output id %d", output); 5100 return BAD_VALUE; 5101 } 5102 5103 LOGV("setStreamOutput() stream %d to output %d", stream, output); 5104 audioConfigChanged_l(AudioSystem::STREAM_CONFIG_CHANGED, output, &stream); 5105 5106 dstThread->setStreamValid(stream, true); 5107 5108 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5109 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 5110 if (thread != dstThread && 5111 thread->type() != ThreadBase::DIRECT) { 5112 MixerThread *srcThread = (MixerThread *)thread; 5113 srcThread->setStreamValid(stream, false); 5114 srcThread->invalidateTracks(stream); 5115 } 5116 } 5117 5118 return NO_ERROR; 5119} 5120 5121 5122int AudioFlinger::newAudioSessionId() 5123{ 5124 return nextUniqueId(); 5125} 5126 5127void AudioFlinger::acquireAudioSessionId(int audioSession) 5128{ 5129 Mutex::Autolock _l(mLock); 5130 int caller = IPCThreadState::self()->getCallingPid(); 5131 LOGV("acquiring %d from %d", audioSession, caller); 5132 int num = mAudioSessionRefs.size(); 5133 for (int i = 0; i< num; i++) { 5134 AudioSessionRef *ref = mAudioSessionRefs.editItemAt(i); 5135 if (ref->sessionid == audioSession && ref->pid == caller) { 5136 ref->cnt++; 5137 LOGV(" incremented refcount to %d", ref->cnt); 5138 return; 5139 } 5140 } 5141 AudioSessionRef *ref = new AudioSessionRef(); 5142 ref->sessionid = audioSession; 5143 ref->pid = caller; 5144 ref->cnt = 1; 5145 mAudioSessionRefs.push(ref); 5146 LOGV(" added new entry for %d", ref->sessionid); 5147} 5148 5149void AudioFlinger::releaseAudioSessionId(int audioSession) 5150{ 5151 Mutex::Autolock _l(mLock); 5152 int caller = IPCThreadState::self()->getCallingPid(); 5153 LOGV("releasing %d from %d", audioSession, caller); 5154 int num = mAudioSessionRefs.size(); 5155 for (int i = 0; i< num; i++) { 5156 AudioSessionRef *ref = mAudioSessionRefs.itemAt(i); 5157 if (ref->sessionid == audioSession && ref->pid == caller) { 5158 ref->cnt--; 5159 LOGV(" decremented refcount to %d", ref->cnt); 5160 if (ref->cnt == 0) { 5161 mAudioSessionRefs.removeAt(i); 5162 delete ref; 5163 purgeStaleEffects_l(); 5164 } 5165 return; 5166 } 5167 } 5168 LOGW("session id %d not found for pid %d", audioSession, caller); 5169} 5170 5171void AudioFlinger::purgeStaleEffects_l() { 5172 5173 LOGV("purging stale effects"); 5174 5175 Vector< sp<EffectChain> > chains; 5176 5177 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5178 sp<PlaybackThread> t = mPlaybackThreads.valueAt(i); 5179 for (size_t j = 0; j < t->mEffectChains.size(); j++) { 5180 sp<EffectChain> ec = t->mEffectChains[j]; 5181 if (ec->sessionId() > AUDIO_SESSION_OUTPUT_MIX) { 5182 chains.push(ec); 5183 } 5184 } 5185 } 5186 for (size_t i = 0; i < mRecordThreads.size(); i++) { 5187 sp<RecordThread> t = mRecordThreads.valueAt(i); 5188 for (size_t j = 0; j < t->mEffectChains.size(); j++) { 5189 sp<EffectChain> ec = t->mEffectChains[j]; 5190 chains.push(ec); 5191 } 5192 } 5193 5194 for (size_t i = 0; i < chains.size(); i++) { 5195 sp<EffectChain> ec = chains[i]; 5196 int sessionid = ec->sessionId(); 5197 sp<ThreadBase> t = ec->mThread.promote(); 5198 if (t == 0) { 5199 continue; 5200 } 5201 size_t numsessionrefs = mAudioSessionRefs.size(); 5202 bool found = false; 5203 for (size_t k = 0; k < numsessionrefs; k++) { 5204 AudioSessionRef *ref = mAudioSessionRefs.itemAt(k); 5205 if (ref->sessionid == sessionid) { 5206 LOGV(" session %d still exists for %d with %d refs", 5207 sessionid, ref->pid, ref->cnt); 5208 found = true; 5209 break; 5210 } 5211 } 5212 if (!found) { 5213 // remove all effects from the chain 5214 while (ec->mEffects.size()) { 5215 sp<EffectModule> effect = ec->mEffects[0]; 5216 effect->unPin(); 5217 Mutex::Autolock _l (t->mLock); 5218 t->removeEffect_l(effect); 5219 for (size_t j = 0; j < effect->mHandles.size(); j++) { 5220 sp<EffectHandle> handle = effect->mHandles[j].promote(); 5221 if (handle != 0) { 5222 handle->mEffect.clear(); 5223 } 5224 } 5225 AudioSystem::unregisterEffect(effect->id()); 5226 } 5227 } 5228 } 5229 return; 5230} 5231 5232// checkPlaybackThread_l() must be called with AudioFlinger::mLock held 5233AudioFlinger::PlaybackThread *AudioFlinger::checkPlaybackThread_l(int output) const 5234{ 5235 PlaybackThread *thread = NULL; 5236 if (mPlaybackThreads.indexOfKey(output) >= 0) { 5237 thread = (PlaybackThread *)mPlaybackThreads.valueFor(output).get(); 5238 } 5239 return thread; 5240} 5241 5242// checkMixerThread_l() must be called with AudioFlinger::mLock held 5243AudioFlinger::MixerThread *AudioFlinger::checkMixerThread_l(int output) const 5244{ 5245 PlaybackThread *thread = checkPlaybackThread_l(output); 5246 if (thread != NULL) { 5247 if (thread->type() == ThreadBase::DIRECT) { 5248 thread = NULL; 5249 } 5250 } 5251 return (MixerThread *)thread; 5252} 5253 5254// checkRecordThread_l() must be called with AudioFlinger::mLock held 5255AudioFlinger::RecordThread *AudioFlinger::checkRecordThread_l(int input) const 5256{ 5257 RecordThread *thread = NULL; 5258 if (mRecordThreads.indexOfKey(input) >= 0) { 5259 thread = (RecordThread *)mRecordThreads.valueFor(input).get(); 5260 } 5261 return thread; 5262} 5263 5264uint32_t AudioFlinger::nextUniqueId() 5265{ 5266 return android_atomic_inc(&mNextUniqueId); 5267} 5268 5269AudioFlinger::PlaybackThread *AudioFlinger::primaryPlaybackThread_l() 5270{ 5271 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5272 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 5273 AudioStreamOut *output = thread->getOutput(); 5274 if (output != NULL && output->hwDev == mPrimaryHardwareDev) { 5275 return thread; 5276 } 5277 } 5278 return NULL; 5279} 5280 5281uint32_t AudioFlinger::primaryOutputDevice_l() 5282{ 5283 PlaybackThread *thread = primaryPlaybackThread_l(); 5284 5285 if (thread == NULL) { 5286 return 0; 5287 } 5288 5289 return thread->device(); 5290} 5291 5292 5293// ---------------------------------------------------------------------------- 5294// Effect management 5295// ---------------------------------------------------------------------------- 5296 5297 5298status_t AudioFlinger::queryNumberEffects(uint32_t *numEffects) 5299{ 5300 Mutex::Autolock _l(mLock); 5301 return EffectQueryNumberEffects(numEffects); 5302} 5303 5304status_t AudioFlinger::queryEffect(uint32_t index, effect_descriptor_t *descriptor) 5305{ 5306 Mutex::Autolock _l(mLock); 5307 return EffectQueryEffect(index, descriptor); 5308} 5309 5310status_t AudioFlinger::getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor) 5311{ 5312 Mutex::Autolock _l(mLock); 5313 return EffectGetDescriptor(pUuid, descriptor); 5314} 5315 5316 5317sp<IEffect> AudioFlinger::createEffect(pid_t pid, 5318 effect_descriptor_t *pDesc, 5319 const sp<IEffectClient>& effectClient, 5320 int32_t priority, 5321 int io, 5322 int sessionId, 5323 status_t *status, 5324 int *id, 5325 int *enabled) 5326{ 5327 status_t lStatus = NO_ERROR; 5328 sp<EffectHandle> handle; 5329 effect_descriptor_t desc; 5330 sp<Client> client; 5331 wp<Client> wclient; 5332 5333 LOGV("createEffect pid %d, client %p, priority %d, sessionId %d, io %d", 5334 pid, effectClient.get(), priority, sessionId, io); 5335 5336 if (pDesc == NULL) { 5337 lStatus = BAD_VALUE; 5338 goto Exit; 5339 } 5340 5341 // check audio settings permission for global effects 5342 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && !settingsAllowed()) { 5343 lStatus = PERMISSION_DENIED; 5344 goto Exit; 5345 } 5346 5347 // Session AUDIO_SESSION_OUTPUT_STAGE is reserved for output stage effects 5348 // that can only be created by audio policy manager (running in same process) 5349 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE && getpid() != pid) { 5350 lStatus = PERMISSION_DENIED; 5351 goto Exit; 5352 } 5353 5354 if (io == 0) { 5355 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE) { 5356 // output must be specified by AudioPolicyManager when using session 5357 // AUDIO_SESSION_OUTPUT_STAGE 5358 lStatus = BAD_VALUE; 5359 goto Exit; 5360 } else if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 5361 // if the output returned by getOutputForEffect() is removed before we lock the 5362 // mutex below, the call to checkPlaybackThread_l(io) below will detect it 5363 // and we will exit safely 5364 io = AudioSystem::getOutputForEffect(&desc); 5365 } 5366 } 5367 5368 { 5369 Mutex::Autolock _l(mLock); 5370 5371 5372 if (!EffectIsNullUuid(&pDesc->uuid)) { 5373 // if uuid is specified, request effect descriptor 5374 lStatus = EffectGetDescriptor(&pDesc->uuid, &desc); 5375 if (lStatus < 0) { 5376 LOGW("createEffect() error %d from EffectGetDescriptor", lStatus); 5377 goto Exit; 5378 } 5379 } else { 5380 // if uuid is not specified, look for an available implementation 5381 // of the required type in effect factory 5382 if (EffectIsNullUuid(&pDesc->type)) { 5383 LOGW("createEffect() no effect type"); 5384 lStatus = BAD_VALUE; 5385 goto Exit; 5386 } 5387 uint32_t numEffects = 0; 5388 effect_descriptor_t d; 5389 d.flags = 0; // prevent compiler warning 5390 bool found = false; 5391 5392 lStatus = EffectQueryNumberEffects(&numEffects); 5393 if (lStatus < 0) { 5394 LOGW("createEffect() error %d from EffectQueryNumberEffects", lStatus); 5395 goto Exit; 5396 } 5397 for (uint32_t i = 0; i < numEffects; i++) { 5398 lStatus = EffectQueryEffect(i, &desc); 5399 if (lStatus < 0) { 5400 LOGW("createEffect() error %d from EffectQueryEffect", lStatus); 5401 continue; 5402 } 5403 if (memcmp(&desc.type, &pDesc->type, sizeof(effect_uuid_t)) == 0) { 5404 // If matching type found save effect descriptor. If the session is 5405 // 0 and the effect is not auxiliary, continue enumeration in case 5406 // an auxiliary version of this effect type is available 5407 found = true; 5408 memcpy(&d, &desc, sizeof(effect_descriptor_t)); 5409 if (sessionId != AUDIO_SESSION_OUTPUT_MIX || 5410 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5411 break; 5412 } 5413 } 5414 } 5415 if (!found) { 5416 lStatus = BAD_VALUE; 5417 LOGW("createEffect() effect not found"); 5418 goto Exit; 5419 } 5420 // For same effect type, chose auxiliary version over insert version if 5421 // connect to output mix (Compliance to OpenSL ES) 5422 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && 5423 (d.flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_AUXILIARY) { 5424 memcpy(&desc, &d, sizeof(effect_descriptor_t)); 5425 } 5426 } 5427 5428 // Do not allow auxiliary effects on a session different from 0 (output mix) 5429 if (sessionId != AUDIO_SESSION_OUTPUT_MIX && 5430 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5431 lStatus = INVALID_OPERATION; 5432 goto Exit; 5433 } 5434 5435 // check recording permission for visualizer 5436 if ((memcmp(&desc.type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0) && 5437 !recordingAllowed()) { 5438 lStatus = PERMISSION_DENIED; 5439 goto Exit; 5440 } 5441 5442 // return effect descriptor 5443 memcpy(pDesc, &desc, sizeof(effect_descriptor_t)); 5444 5445 // If output is not specified try to find a matching audio session ID in one of the 5446 // output threads. 5447 // If output is 0 here, sessionId is neither SESSION_OUTPUT_STAGE nor SESSION_OUTPUT_MIX 5448 // because of code checking output when entering the function. 5449 // Note: io is never 0 when creating an effect on an input 5450 if (io == 0) { 5451 // look for the thread where the specified audio session is present 5452 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5453 if (mPlaybackThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 5454 io = mPlaybackThreads.keyAt(i); 5455 break; 5456 } 5457 } 5458 if (io == 0) { 5459 for (size_t i = 0; i < mRecordThreads.size(); i++) { 5460 if (mRecordThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 5461 io = mRecordThreads.keyAt(i); 5462 break; 5463 } 5464 } 5465 } 5466 // If no output thread contains the requested session ID, default to 5467 // first output. The effect chain will be moved to the correct output 5468 // thread when a track with the same session ID is created 5469 if (io == 0 && mPlaybackThreads.size()) { 5470 io = mPlaybackThreads.keyAt(0); 5471 } 5472 LOGV("createEffect() got io %d for effect %s", io, desc.name); 5473 } 5474 ThreadBase *thread = checkRecordThread_l(io); 5475 if (thread == NULL) { 5476 thread = checkPlaybackThread_l(io); 5477 if (thread == NULL) { 5478 LOGE("createEffect() unknown output thread"); 5479 lStatus = BAD_VALUE; 5480 goto Exit; 5481 } 5482 } 5483 5484 wclient = mClients.valueFor(pid); 5485 5486 if (wclient != NULL) { 5487 client = wclient.promote(); 5488 } else { 5489 client = new Client(this, pid); 5490 mClients.add(pid, client); 5491 } 5492 5493 // create effect on selected output thread 5494 handle = thread->createEffect_l(client, effectClient, priority, sessionId, 5495 &desc, enabled, &lStatus); 5496 if (handle != 0 && id != NULL) { 5497 *id = handle->id(); 5498 } 5499 } 5500 5501Exit: 5502 if(status) { 5503 *status = lStatus; 5504 } 5505 return handle; 5506} 5507 5508status_t AudioFlinger::moveEffects(int sessionId, int srcOutput, int dstOutput) 5509{ 5510 LOGV("moveEffects() session %d, srcOutput %d, dstOutput %d", 5511 sessionId, srcOutput, dstOutput); 5512 Mutex::Autolock _l(mLock); 5513 if (srcOutput == dstOutput) { 5514 LOGW("moveEffects() same dst and src outputs %d", dstOutput); 5515 return NO_ERROR; 5516 } 5517 PlaybackThread *srcThread = checkPlaybackThread_l(srcOutput); 5518 if (srcThread == NULL) { 5519 LOGW("moveEffects() bad srcOutput %d", srcOutput); 5520 return BAD_VALUE; 5521 } 5522 PlaybackThread *dstThread = checkPlaybackThread_l(dstOutput); 5523 if (dstThread == NULL) { 5524 LOGW("moveEffects() bad dstOutput %d", dstOutput); 5525 return BAD_VALUE; 5526 } 5527 5528 Mutex::Autolock _dl(dstThread->mLock); 5529 Mutex::Autolock _sl(srcThread->mLock); 5530 moveEffectChain_l(sessionId, srcThread, dstThread, false); 5531 5532 return NO_ERROR; 5533} 5534 5535// moveEffectChain_l must be called with both srcThread and dstThread mLocks held 5536status_t AudioFlinger::moveEffectChain_l(int sessionId, 5537 AudioFlinger::PlaybackThread *srcThread, 5538 AudioFlinger::PlaybackThread *dstThread, 5539 bool reRegister) 5540{ 5541 LOGV("moveEffectChain_l() session %d from thread %p to thread %p", 5542 sessionId, srcThread, dstThread); 5543 5544 sp<EffectChain> chain = srcThread->getEffectChain_l(sessionId); 5545 if (chain == 0) { 5546 LOGW("moveEffectChain_l() effect chain for session %d not on source thread %p", 5547 sessionId, srcThread); 5548 return INVALID_OPERATION; 5549 } 5550 5551 // remove chain first. This is useful only if reconfiguring effect chain on same output thread, 5552 // so that a new chain is created with correct parameters when first effect is added. This is 5553 // otherwise unnecessary as removeEffect_l() will remove the chain when last effect is 5554 // removed. 5555 srcThread->removeEffectChain_l(chain); 5556 5557 // transfer all effects one by one so that new effect chain is created on new thread with 5558 // correct buffer sizes and audio parameters and effect engines reconfigured accordingly 5559 int dstOutput = dstThread->id(); 5560 sp<EffectChain> dstChain; 5561 uint32_t strategy = 0; // prevent compiler warning 5562 sp<EffectModule> effect = chain->getEffectFromId_l(0); 5563 while (effect != 0) { 5564 srcThread->removeEffect_l(effect); 5565 dstThread->addEffect_l(effect); 5566 // removeEffect_l() has stopped the effect if it was active so it must be restarted 5567 if (effect->state() == EffectModule::ACTIVE || 5568 effect->state() == EffectModule::STOPPING) { 5569 effect->start(); 5570 } 5571 // if the move request is not received from audio policy manager, the effect must be 5572 // re-registered with the new strategy and output 5573 if (dstChain == 0) { 5574 dstChain = effect->chain().promote(); 5575 if (dstChain == 0) { 5576 LOGW("moveEffectChain_l() cannot get chain from effect %p", effect.get()); 5577 srcThread->addEffect_l(effect); 5578 return NO_INIT; 5579 } 5580 strategy = dstChain->strategy(); 5581 } 5582 if (reRegister) { 5583 AudioSystem::unregisterEffect(effect->id()); 5584 AudioSystem::registerEffect(&effect->desc(), 5585 dstOutput, 5586 strategy, 5587 sessionId, 5588 effect->id()); 5589 } 5590 effect = chain->getEffectFromId_l(0); 5591 } 5592 5593 return NO_ERROR; 5594} 5595 5596 5597// PlaybackThread::createEffect_l() must be called with AudioFlinger::mLock held 5598sp<AudioFlinger::EffectHandle> AudioFlinger::ThreadBase::createEffect_l( 5599 const sp<AudioFlinger::Client>& client, 5600 const sp<IEffectClient>& effectClient, 5601 int32_t priority, 5602 int sessionId, 5603 effect_descriptor_t *desc, 5604 int *enabled, 5605 status_t *status 5606 ) 5607{ 5608 sp<EffectModule> effect; 5609 sp<EffectHandle> handle; 5610 status_t lStatus; 5611 sp<EffectChain> chain; 5612 bool chainCreated = false; 5613 bool effectCreated = false; 5614 bool effectRegistered = false; 5615 5616 lStatus = initCheck(); 5617 if (lStatus != NO_ERROR) { 5618 LOGW("createEffect_l() Audio driver not initialized."); 5619 goto Exit; 5620 } 5621 5622 // Do not allow effects with session ID 0 on direct output or duplicating threads 5623 // TODO: add rule for hw accelerated effects on direct outputs with non PCM format 5624 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && mType != MIXER) { 5625 LOGW("createEffect_l() Cannot add auxiliary effect %s to session %d", 5626 desc->name, sessionId); 5627 lStatus = BAD_VALUE; 5628 goto Exit; 5629 } 5630 // Only Pre processor effects are allowed on input threads and only on input threads 5631 if ((mType == RECORD && 5632 (desc->flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_PRE_PROC) || 5633 (mType != RECORD && 5634 (desc->flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC)) { 5635 LOGW("createEffect_l() effect %s (flags %08x) created on wrong thread type %d", 5636 desc->name, desc->flags, mType); 5637 lStatus = BAD_VALUE; 5638 goto Exit; 5639 } 5640 5641 LOGV("createEffect_l() thread %p effect %s on session %d", this, desc->name, sessionId); 5642 5643 { // scope for mLock 5644 Mutex::Autolock _l(mLock); 5645 5646 // check for existing effect chain with the requested audio session 5647 chain = getEffectChain_l(sessionId); 5648 if (chain == 0) { 5649 // create a new chain for this session 5650 LOGV("createEffect_l() new effect chain for session %d", sessionId); 5651 chain = new EffectChain(this, sessionId); 5652 addEffectChain_l(chain); 5653 chain->setStrategy(getStrategyForSession_l(sessionId)); 5654 chainCreated = true; 5655 } else { 5656 effect = chain->getEffectFromDesc_l(desc); 5657 } 5658 5659 LOGV("createEffect_l() got effect %p on chain %p", effect == 0 ? 0 : effect.get(), chain.get()); 5660 5661 if (effect == 0) { 5662 int id = mAudioFlinger->nextUniqueId(); 5663 // Check CPU and memory usage 5664 lStatus = AudioSystem::registerEffect(desc, mId, chain->strategy(), sessionId, id); 5665 if (lStatus != NO_ERROR) { 5666 goto Exit; 5667 } 5668 effectRegistered = true; 5669 // create a new effect module if none present in the chain 5670 effect = new EffectModule(this, chain, desc, id, sessionId); 5671 lStatus = effect->status(); 5672 if (lStatus != NO_ERROR) { 5673 goto Exit; 5674 } 5675 lStatus = chain->addEffect_l(effect); 5676 if (lStatus != NO_ERROR) { 5677 goto Exit; 5678 } 5679 effectCreated = true; 5680 5681 effect->setDevice(mDevice); 5682 effect->setMode(mAudioFlinger->getMode()); 5683 } 5684 // create effect handle and connect it to effect module 5685 handle = new EffectHandle(effect, client, effectClient, priority); 5686 lStatus = effect->addHandle(handle); 5687 if (enabled) { 5688 *enabled = (int)effect->isEnabled(); 5689 } 5690 } 5691 5692Exit: 5693 if (lStatus != NO_ERROR && lStatus != ALREADY_EXISTS) { 5694 Mutex::Autolock _l(mLock); 5695 if (effectCreated) { 5696 chain->removeEffect_l(effect); 5697 } 5698 if (effectRegistered) { 5699 AudioSystem::unregisterEffect(effect->id()); 5700 } 5701 if (chainCreated) { 5702 removeEffectChain_l(chain); 5703 } 5704 handle.clear(); 5705 } 5706 5707 if(status) { 5708 *status = lStatus; 5709 } 5710 return handle; 5711} 5712 5713sp<AudioFlinger::EffectModule> AudioFlinger::ThreadBase::getEffect_l(int sessionId, int effectId) 5714{ 5715 sp<EffectModule> effect; 5716 5717 sp<EffectChain> chain = getEffectChain_l(sessionId); 5718 if (chain != 0) { 5719 effect = chain->getEffectFromId_l(effectId); 5720 } 5721 return effect; 5722} 5723 5724// PlaybackThread::addEffect_l() must be called with AudioFlinger::mLock and 5725// PlaybackThread::mLock held 5726status_t AudioFlinger::ThreadBase::addEffect_l(const sp<EffectModule>& effect) 5727{ 5728 // check for existing effect chain with the requested audio session 5729 int sessionId = effect->sessionId(); 5730 sp<EffectChain> chain = getEffectChain_l(sessionId); 5731 bool chainCreated = false; 5732 5733 if (chain == 0) { 5734 // create a new chain for this session 5735 LOGV("addEffect_l() new effect chain for session %d", sessionId); 5736 chain = new EffectChain(this, sessionId); 5737 addEffectChain_l(chain); 5738 chain->setStrategy(getStrategyForSession_l(sessionId)); 5739 chainCreated = true; 5740 } 5741 LOGV("addEffect_l() %p chain %p effect %p", this, chain.get(), effect.get()); 5742 5743 if (chain->getEffectFromId_l(effect->id()) != 0) { 5744 LOGW("addEffect_l() %p effect %s already present in chain %p", 5745 this, effect->desc().name, chain.get()); 5746 return BAD_VALUE; 5747 } 5748 5749 status_t status = chain->addEffect_l(effect); 5750 if (status != NO_ERROR) { 5751 if (chainCreated) { 5752 removeEffectChain_l(chain); 5753 } 5754 return status; 5755 } 5756 5757 effect->setDevice(mDevice); 5758 effect->setMode(mAudioFlinger->getMode()); 5759 return NO_ERROR; 5760} 5761 5762void AudioFlinger::ThreadBase::removeEffect_l(const sp<EffectModule>& effect) { 5763 5764 LOGV("removeEffect_l() %p effect %p", this, effect.get()); 5765 effect_descriptor_t desc = effect->desc(); 5766 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5767 detachAuxEffect_l(effect->id()); 5768 } 5769 5770 sp<EffectChain> chain = effect->chain().promote(); 5771 if (chain != 0) { 5772 // remove effect chain if removing last effect 5773 if (chain->removeEffect_l(effect) == 0) { 5774 removeEffectChain_l(chain); 5775 } 5776 } else { 5777 LOGW("removeEffect_l() %p cannot promote chain for effect %p", this, effect.get()); 5778 } 5779} 5780 5781void AudioFlinger::ThreadBase::lockEffectChains_l( 5782 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5783{ 5784 effectChains = mEffectChains; 5785 for (size_t i = 0; i < mEffectChains.size(); i++) { 5786 mEffectChains[i]->lock(); 5787 } 5788} 5789 5790void AudioFlinger::ThreadBase::unlockEffectChains( 5791 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5792{ 5793 for (size_t i = 0; i < effectChains.size(); i++) { 5794 effectChains[i]->unlock(); 5795 } 5796} 5797 5798sp<AudioFlinger::EffectChain> AudioFlinger::ThreadBase::getEffectChain(int sessionId) 5799{ 5800 Mutex::Autolock _l(mLock); 5801 return getEffectChain_l(sessionId); 5802} 5803 5804sp<AudioFlinger::EffectChain> AudioFlinger::ThreadBase::getEffectChain_l(int sessionId) 5805{ 5806 sp<EffectChain> chain; 5807 5808 size_t size = mEffectChains.size(); 5809 for (size_t i = 0; i < size; i++) { 5810 if (mEffectChains[i]->sessionId() == sessionId) { 5811 chain = mEffectChains[i]; 5812 break; 5813 } 5814 } 5815 return chain; 5816} 5817 5818void AudioFlinger::ThreadBase::setMode(uint32_t mode) 5819{ 5820 Mutex::Autolock _l(mLock); 5821 size_t size = mEffectChains.size(); 5822 for (size_t i = 0; i < size; i++) { 5823 mEffectChains[i]->setMode_l(mode); 5824 } 5825} 5826 5827void AudioFlinger::ThreadBase::disconnectEffect(const sp<EffectModule>& effect, 5828 const wp<EffectHandle>& handle, 5829 bool unpiniflast) { 5830 5831 Mutex::Autolock _l(mLock); 5832 LOGV("disconnectEffect() %p effect %p", this, effect.get()); 5833 // delete the effect module if removing last handle on it 5834 if (effect->removeHandle(handle) == 0) { 5835 if (!effect->isPinned() || unpiniflast) { 5836 removeEffect_l(effect); 5837 AudioSystem::unregisterEffect(effect->id()); 5838 } 5839 } 5840} 5841 5842status_t AudioFlinger::PlaybackThread::addEffectChain_l(const sp<EffectChain>& chain) 5843{ 5844 int session = chain->sessionId(); 5845 int16_t *buffer = mMixBuffer; 5846 bool ownsBuffer = false; 5847 5848 LOGV("addEffectChain_l() %p on thread %p for session %d", chain.get(), this, session); 5849 if (session > 0) { 5850 // Only one effect chain can be present in direct output thread and it uses 5851 // the mix buffer as input 5852 if (mType != DIRECT) { 5853 size_t numSamples = mFrameCount * mChannelCount; 5854 buffer = new int16_t[numSamples]; 5855 memset(buffer, 0, numSamples * sizeof(int16_t)); 5856 LOGV("addEffectChain_l() creating new input buffer %p session %d", buffer, session); 5857 ownsBuffer = true; 5858 } 5859 5860 // Attach all tracks with same session ID to this chain. 5861 for (size_t i = 0; i < mTracks.size(); ++i) { 5862 sp<Track> track = mTracks[i]; 5863 if (session == track->sessionId()) { 5864 LOGV("addEffectChain_l() track->setMainBuffer track %p buffer %p", track.get(), buffer); 5865 track->setMainBuffer(buffer); 5866 chain->incTrackCnt(); 5867 } 5868 } 5869 5870 // indicate all active tracks in the chain 5871 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5872 sp<Track> track = mActiveTracks[i].promote(); 5873 if (track == 0) continue; 5874 if (session == track->sessionId()) { 5875 LOGV("addEffectChain_l() activating track %p on session %d", track.get(), session); 5876 chain->incActiveTrackCnt(); 5877 } 5878 } 5879 } 5880 5881 chain->setInBuffer(buffer, ownsBuffer); 5882 chain->setOutBuffer(mMixBuffer); 5883 // Effect chain for session AUDIO_SESSION_OUTPUT_STAGE is inserted at end of effect 5884 // chains list in order to be processed last as it contains output stage effects 5885 // Effect chain for session AUDIO_SESSION_OUTPUT_MIX is inserted before 5886 // session AUDIO_SESSION_OUTPUT_STAGE to be processed 5887 // after track specific effects and before output stage 5888 // It is therefore mandatory that AUDIO_SESSION_OUTPUT_MIX == 0 and 5889 // that AUDIO_SESSION_OUTPUT_STAGE < AUDIO_SESSION_OUTPUT_MIX 5890 // Effect chain for other sessions are inserted at beginning of effect 5891 // chains list to be processed before output mix effects. Relative order between other 5892 // sessions is not important 5893 size_t size = mEffectChains.size(); 5894 size_t i = 0; 5895 for (i = 0; i < size; i++) { 5896 if (mEffectChains[i]->sessionId() < session) break; 5897 } 5898 mEffectChains.insertAt(chain, i); 5899 checkSuspendOnAddEffectChain_l(chain); 5900 5901 return NO_ERROR; 5902} 5903 5904size_t AudioFlinger::PlaybackThread::removeEffectChain_l(const sp<EffectChain>& chain) 5905{ 5906 int session = chain->sessionId(); 5907 5908 LOGV("removeEffectChain_l() %p from thread %p for session %d", chain.get(), this, session); 5909 5910 for (size_t i = 0; i < mEffectChains.size(); i++) { 5911 if (chain == mEffectChains[i]) { 5912 mEffectChains.removeAt(i); 5913 // detach all active tracks from the chain 5914 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5915 sp<Track> track = mActiveTracks[i].promote(); 5916 if (track == 0) continue; 5917 if (session == track->sessionId()) { 5918 LOGV("removeEffectChain_l(): stopping track on chain %p for session Id: %d", 5919 chain.get(), session); 5920 chain->decActiveTrackCnt(); 5921 } 5922 } 5923 5924 // detach all tracks with same session ID from this chain 5925 for (size_t i = 0; i < mTracks.size(); ++i) { 5926 sp<Track> track = mTracks[i]; 5927 if (session == track->sessionId()) { 5928 track->setMainBuffer(mMixBuffer); 5929 chain->decTrackCnt(); 5930 } 5931 } 5932 break; 5933 } 5934 } 5935 return mEffectChains.size(); 5936} 5937 5938status_t AudioFlinger::PlaybackThread::attachAuxEffect( 5939 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5940{ 5941 Mutex::Autolock _l(mLock); 5942 return attachAuxEffect_l(track, EffectId); 5943} 5944 5945status_t AudioFlinger::PlaybackThread::attachAuxEffect_l( 5946 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5947{ 5948 status_t status = NO_ERROR; 5949 5950 if (EffectId == 0) { 5951 track->setAuxBuffer(0, NULL); 5952 } else { 5953 // Auxiliary effects are always in audio session AUDIO_SESSION_OUTPUT_MIX 5954 sp<EffectModule> effect = getEffect_l(AUDIO_SESSION_OUTPUT_MIX, EffectId); 5955 if (effect != 0) { 5956 if ((effect->desc().flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5957 track->setAuxBuffer(EffectId, (int32_t *)effect->inBuffer()); 5958 } else { 5959 status = INVALID_OPERATION; 5960 } 5961 } else { 5962 status = BAD_VALUE; 5963 } 5964 } 5965 return status; 5966} 5967 5968void AudioFlinger::PlaybackThread::detachAuxEffect_l(int effectId) 5969{ 5970 for (size_t i = 0; i < mTracks.size(); ++i) { 5971 sp<Track> track = mTracks[i]; 5972 if (track->auxEffectId() == effectId) { 5973 attachAuxEffect_l(track, 0); 5974 } 5975 } 5976} 5977 5978status_t AudioFlinger::RecordThread::addEffectChain_l(const sp<EffectChain>& chain) 5979{ 5980 // only one chain per input thread 5981 if (mEffectChains.size() != 0) { 5982 return INVALID_OPERATION; 5983 } 5984 LOGV("addEffectChain_l() %p on thread %p", chain.get(), this); 5985 5986 chain->setInBuffer(NULL); 5987 chain->setOutBuffer(NULL); 5988 5989 checkSuspendOnAddEffectChain_l(chain); 5990 5991 mEffectChains.add(chain); 5992 5993 return NO_ERROR; 5994} 5995 5996size_t AudioFlinger::RecordThread::removeEffectChain_l(const sp<EffectChain>& chain) 5997{ 5998 LOGV("removeEffectChain_l() %p from thread %p", chain.get(), this); 5999 LOGW_IF(mEffectChains.size() != 1, 6000 "removeEffectChain_l() %p invalid chain size %d on thread %p", 6001 chain.get(), mEffectChains.size(), this); 6002 if (mEffectChains.size() == 1) { 6003 mEffectChains.removeAt(0); 6004 } 6005 return 0; 6006} 6007 6008// ---------------------------------------------------------------------------- 6009// EffectModule implementation 6010// ---------------------------------------------------------------------------- 6011 6012#undef LOG_TAG 6013#define LOG_TAG "AudioFlinger::EffectModule" 6014 6015AudioFlinger::EffectModule::EffectModule(const wp<ThreadBase>& wThread, 6016 const wp<AudioFlinger::EffectChain>& chain, 6017 effect_descriptor_t *desc, 6018 int id, 6019 int sessionId) 6020 : mThread(wThread), mChain(chain), mId(id), mSessionId(sessionId), mEffectInterface(NULL), 6021 mStatus(NO_INIT), mState(IDLE), mSuspended(false) 6022{ 6023 LOGV("Constructor %p", this); 6024 int lStatus; 6025 sp<ThreadBase> thread = mThread.promote(); 6026 if (thread == 0) { 6027 return; 6028 } 6029 6030 memcpy(&mDescriptor, desc, sizeof(effect_descriptor_t)); 6031 6032 // create effect engine from effect factory 6033 mStatus = EffectCreate(&desc->uuid, sessionId, thread->id(), &mEffectInterface); 6034 6035 if (mStatus != NO_ERROR) { 6036 return; 6037 } 6038 lStatus = init(); 6039 if (lStatus < 0) { 6040 mStatus = lStatus; 6041 goto Error; 6042 } 6043 6044 if (mSessionId > AUDIO_SESSION_OUTPUT_MIX) { 6045 mPinned = true; 6046 } 6047 LOGV("Constructor success name %s, Interface %p", mDescriptor.name, mEffectInterface); 6048 return; 6049Error: 6050 EffectRelease(mEffectInterface); 6051 mEffectInterface = NULL; 6052 LOGV("Constructor Error %d", mStatus); 6053} 6054 6055AudioFlinger::EffectModule::~EffectModule() 6056{ 6057 LOGV("Destructor %p", this); 6058 if (mEffectInterface != NULL) { 6059 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 6060 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC) { 6061 sp<ThreadBase> thread = mThread.promote(); 6062 if (thread != 0) { 6063 audio_stream_t *stream = thread->stream(); 6064 if (stream != NULL) { 6065 stream->remove_audio_effect(stream, mEffectInterface); 6066 } 6067 } 6068 } 6069 // release effect engine 6070 EffectRelease(mEffectInterface); 6071 } 6072} 6073 6074status_t AudioFlinger::EffectModule::addHandle(sp<EffectHandle>& handle) 6075{ 6076 status_t status; 6077 6078 Mutex::Autolock _l(mLock); 6079 // First handle in mHandles has highest priority and controls the effect module 6080 int priority = handle->priority(); 6081 size_t size = mHandles.size(); 6082 sp<EffectHandle> h; 6083 size_t i; 6084 for (i = 0; i < size; i++) { 6085 h = mHandles[i].promote(); 6086 if (h == 0) continue; 6087 if (h->priority() <= priority) break; 6088 } 6089 // if inserted in first place, move effect control from previous owner to this handle 6090 if (i == 0) { 6091 bool enabled = false; 6092 if (h != 0) { 6093 enabled = h->enabled(); 6094 h->setControl(false/*hasControl*/, true /*signal*/, enabled /*enabled*/); 6095 } 6096 handle->setControl(true /*hasControl*/, false /*signal*/, enabled /*enabled*/); 6097 status = NO_ERROR; 6098 } else { 6099 status = ALREADY_EXISTS; 6100 } 6101 LOGV("addHandle() %p added handle %p in position %d", this, handle.get(), i); 6102 mHandles.insertAt(handle, i); 6103 return status; 6104} 6105 6106size_t AudioFlinger::EffectModule::removeHandle(const wp<EffectHandle>& handle) 6107{ 6108 Mutex::Autolock _l(mLock); 6109 size_t size = mHandles.size(); 6110 size_t i; 6111 for (i = 0; i < size; i++) { 6112 if (mHandles[i] == handle) break; 6113 } 6114 if (i == size) { 6115 return size; 6116 } 6117 LOGV("removeHandle() %p removed handle %p in position %d", this, handle.unsafe_get(), i); 6118 6119 bool enabled = false; 6120 EffectHandle *hdl = handle.unsafe_get(); 6121 if (hdl) { 6122 LOGV("removeHandle() unsafe_get OK"); 6123 enabled = hdl->enabled(); 6124 } 6125 mHandles.removeAt(i); 6126 size = mHandles.size(); 6127 // if removed from first place, move effect control from this handle to next in line 6128 if (i == 0 && size != 0) { 6129 sp<EffectHandle> h = mHandles[0].promote(); 6130 if (h != 0) { 6131 h->setControl(true /*hasControl*/, true /*signal*/ , enabled /*enabled*/); 6132 } 6133 } 6134 6135 // Prevent calls to process() and other functions on effect interface from now on. 6136 // The effect engine will be released by the destructor when the last strong reference on 6137 // this object is released which can happen after next process is called. 6138 if (size == 0 && !mPinned) { 6139 mState = DESTROYED; 6140 } 6141 6142 return size; 6143} 6144 6145sp<AudioFlinger::EffectHandle> AudioFlinger::EffectModule::controlHandle() 6146{ 6147 Mutex::Autolock _l(mLock); 6148 sp<EffectHandle> handle; 6149 if (mHandles.size() != 0) { 6150 handle = mHandles[0].promote(); 6151 } 6152 return handle; 6153} 6154 6155void AudioFlinger::EffectModule::disconnect(const wp<EffectHandle>& handle, bool unpiniflast) 6156{ 6157 LOGV("disconnect() %p handle %p ", this, handle.unsafe_get()); 6158 // keep a strong reference on this EffectModule to avoid calling the 6159 // destructor before we exit 6160 sp<EffectModule> keep(this); 6161 { 6162 sp<ThreadBase> thread = mThread.promote(); 6163 if (thread != 0) { 6164 thread->disconnectEffect(keep, handle, unpiniflast); 6165 } 6166 } 6167} 6168 6169void AudioFlinger::EffectModule::updateState() { 6170 Mutex::Autolock _l(mLock); 6171 6172 switch (mState) { 6173 case RESTART: 6174 reset_l(); 6175 // FALL THROUGH 6176 6177 case STARTING: 6178 // clear auxiliary effect input buffer for next accumulation 6179 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6180 memset(mConfig.inputCfg.buffer.raw, 6181 0, 6182 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 6183 } 6184 start_l(); 6185 mState = ACTIVE; 6186 break; 6187 case STOPPING: 6188 stop_l(); 6189 mDisableWaitCnt = mMaxDisableWaitCnt; 6190 mState = STOPPED; 6191 break; 6192 case STOPPED: 6193 // mDisableWaitCnt is forced to 1 by process() when the engine indicates the end of the 6194 // turn off sequence. 6195 if (--mDisableWaitCnt == 0) { 6196 reset_l(); 6197 mState = IDLE; 6198 } 6199 break; 6200 default: //IDLE , ACTIVE, DESTROYED 6201 break; 6202 } 6203} 6204 6205void AudioFlinger::EffectModule::process() 6206{ 6207 Mutex::Autolock _l(mLock); 6208 6209 if (mState == DESTROYED || mEffectInterface == NULL || 6210 mConfig.inputCfg.buffer.raw == NULL || 6211 mConfig.outputCfg.buffer.raw == NULL) { 6212 return; 6213 } 6214 6215 if (isProcessEnabled()) { 6216 // do 32 bit to 16 bit conversion for auxiliary effect input buffer 6217 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6218 AudioMixer::ditherAndClamp(mConfig.inputCfg.buffer.s32, 6219 mConfig.inputCfg.buffer.s32, 6220 mConfig.inputCfg.buffer.frameCount/2); 6221 } 6222 6223 // do the actual processing in the effect engine 6224 int ret = (*mEffectInterface)->process(mEffectInterface, 6225 &mConfig.inputCfg.buffer, 6226 &mConfig.outputCfg.buffer); 6227 6228 // force transition to IDLE state when engine is ready 6229 if (mState == STOPPED && ret == -ENODATA) { 6230 mDisableWaitCnt = 1; 6231 } 6232 6233 // clear auxiliary effect input buffer for next accumulation 6234 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6235 memset(mConfig.inputCfg.buffer.raw, 0, 6236 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 6237 } 6238 } else if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_INSERT && 6239 mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 6240 // If an insert effect is idle and input buffer is different from output buffer, 6241 // accumulate input onto output 6242 sp<EffectChain> chain = mChain.promote(); 6243 if (chain != 0 && chain->activeTrackCnt() != 0) { 6244 size_t frameCnt = mConfig.inputCfg.buffer.frameCount * 2; //always stereo here 6245 int16_t *in = mConfig.inputCfg.buffer.s16; 6246 int16_t *out = mConfig.outputCfg.buffer.s16; 6247 for (size_t i = 0; i < frameCnt; i++) { 6248 out[i] = clamp16((int32_t)out[i] + (int32_t)in[i]); 6249 } 6250 } 6251 } 6252} 6253 6254void AudioFlinger::EffectModule::reset_l() 6255{ 6256 if (mEffectInterface == NULL) { 6257 return; 6258 } 6259 (*mEffectInterface)->command(mEffectInterface, EFFECT_CMD_RESET, 0, NULL, 0, NULL); 6260} 6261 6262status_t AudioFlinger::EffectModule::configure() 6263{ 6264 uint32_t channels; 6265 if (mEffectInterface == NULL) { 6266 return NO_INIT; 6267 } 6268 6269 sp<ThreadBase> thread = mThread.promote(); 6270 if (thread == 0) { 6271 return DEAD_OBJECT; 6272 } 6273 6274 // TODO: handle configuration of effects replacing track process 6275 if (thread->channelCount() == 1) { 6276 channels = AUDIO_CHANNEL_OUT_MONO; 6277 } else { 6278 channels = AUDIO_CHANNEL_OUT_STEREO; 6279 } 6280 6281 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6282 mConfig.inputCfg.channels = AUDIO_CHANNEL_OUT_MONO; 6283 } else { 6284 mConfig.inputCfg.channels = channels; 6285 } 6286 mConfig.outputCfg.channels = channels; 6287 mConfig.inputCfg.format = AUDIO_FORMAT_PCM_16_BIT; 6288 mConfig.outputCfg.format = AUDIO_FORMAT_PCM_16_BIT; 6289 mConfig.inputCfg.samplingRate = thread->sampleRate(); 6290 mConfig.outputCfg.samplingRate = mConfig.inputCfg.samplingRate; 6291 mConfig.inputCfg.bufferProvider.cookie = NULL; 6292 mConfig.inputCfg.bufferProvider.getBuffer = NULL; 6293 mConfig.inputCfg.bufferProvider.releaseBuffer = NULL; 6294 mConfig.outputCfg.bufferProvider.cookie = NULL; 6295 mConfig.outputCfg.bufferProvider.getBuffer = NULL; 6296 mConfig.outputCfg.bufferProvider.releaseBuffer = NULL; 6297 mConfig.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ; 6298 // Insert effect: 6299 // - in session AUDIO_SESSION_OUTPUT_MIX or AUDIO_SESSION_OUTPUT_STAGE, 6300 // always overwrites output buffer: input buffer == output buffer 6301 // - in other sessions: 6302 // last effect in the chain accumulates in output buffer: input buffer != output buffer 6303 // other effect: overwrites output buffer: input buffer == output buffer 6304 // Auxiliary effect: 6305 // accumulates in output buffer: input buffer != output buffer 6306 // Therefore: accumulate <=> input buffer != output buffer 6307 if (mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 6308 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE; 6309 } else { 6310 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_WRITE; 6311 } 6312 mConfig.inputCfg.mask = EFFECT_CONFIG_ALL; 6313 mConfig.outputCfg.mask = EFFECT_CONFIG_ALL; 6314 mConfig.inputCfg.buffer.frameCount = thread->frameCount(); 6315 mConfig.outputCfg.buffer.frameCount = mConfig.inputCfg.buffer.frameCount; 6316 6317 LOGV("configure() %p thread %p buffer %p framecount %d", 6318 this, thread.get(), mConfig.inputCfg.buffer.raw, mConfig.inputCfg.buffer.frameCount); 6319 6320 status_t cmdStatus; 6321 uint32_t size = sizeof(int); 6322 status_t status = (*mEffectInterface)->command(mEffectInterface, 6323 EFFECT_CMD_CONFIGURE, 6324 sizeof(effect_config_t), 6325 &mConfig, 6326 &size, 6327 &cmdStatus); 6328 if (status == 0) { 6329 status = cmdStatus; 6330 } 6331 6332 mMaxDisableWaitCnt = (MAX_DISABLE_TIME_MS * mConfig.outputCfg.samplingRate) / 6333 (1000 * mConfig.outputCfg.buffer.frameCount); 6334 6335 return status; 6336} 6337 6338status_t AudioFlinger::EffectModule::init() 6339{ 6340 Mutex::Autolock _l(mLock); 6341 if (mEffectInterface == NULL) { 6342 return NO_INIT; 6343 } 6344 status_t cmdStatus; 6345 uint32_t size = sizeof(status_t); 6346 status_t status = (*mEffectInterface)->command(mEffectInterface, 6347 EFFECT_CMD_INIT, 6348 0, 6349 NULL, 6350 &size, 6351 &cmdStatus); 6352 if (status == 0) { 6353 status = cmdStatus; 6354 } 6355 return status; 6356} 6357 6358status_t AudioFlinger::EffectModule::start() 6359{ 6360 Mutex::Autolock _l(mLock); 6361 return start_l(); 6362} 6363 6364status_t AudioFlinger::EffectModule::start_l() 6365{ 6366 if (mEffectInterface == NULL) { 6367 return NO_INIT; 6368 } 6369 status_t cmdStatus; 6370 uint32_t size = sizeof(status_t); 6371 status_t status = (*mEffectInterface)->command(mEffectInterface, 6372 EFFECT_CMD_ENABLE, 6373 0, 6374 NULL, 6375 &size, 6376 &cmdStatus); 6377 if (status == 0) { 6378 status = cmdStatus; 6379 } 6380 if (status == 0 && 6381 ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 6382 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC)) { 6383 sp<ThreadBase> thread = mThread.promote(); 6384 if (thread != 0) { 6385 audio_stream_t *stream = thread->stream(); 6386 if (stream != NULL) { 6387 stream->add_audio_effect(stream, mEffectInterface); 6388 } 6389 } 6390 } 6391 return status; 6392} 6393 6394status_t AudioFlinger::EffectModule::stop() 6395{ 6396 Mutex::Autolock _l(mLock); 6397 return stop_l(); 6398} 6399 6400status_t AudioFlinger::EffectModule::stop_l() 6401{ 6402 if (mEffectInterface == NULL) { 6403 return NO_INIT; 6404 } 6405 status_t cmdStatus; 6406 uint32_t size = sizeof(status_t); 6407 status_t status = (*mEffectInterface)->command(mEffectInterface, 6408 EFFECT_CMD_DISABLE, 6409 0, 6410 NULL, 6411 &size, 6412 &cmdStatus); 6413 if (status == 0) { 6414 status = cmdStatus; 6415 } 6416 if (status == 0 && 6417 ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 6418 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC)) { 6419 sp<ThreadBase> thread = mThread.promote(); 6420 if (thread != 0) { 6421 audio_stream_t *stream = thread->stream(); 6422 if (stream != NULL) { 6423 stream->remove_audio_effect(stream, mEffectInterface); 6424 } 6425 } 6426 } 6427 return status; 6428} 6429 6430status_t AudioFlinger::EffectModule::command(uint32_t cmdCode, 6431 uint32_t cmdSize, 6432 void *pCmdData, 6433 uint32_t *replySize, 6434 void *pReplyData) 6435{ 6436 Mutex::Autolock _l(mLock); 6437// LOGV("command(), cmdCode: %d, mEffectInterface: %p", cmdCode, mEffectInterface); 6438 6439 if (mState == DESTROYED || mEffectInterface == NULL) { 6440 return NO_INIT; 6441 } 6442 status_t status = (*mEffectInterface)->command(mEffectInterface, 6443 cmdCode, 6444 cmdSize, 6445 pCmdData, 6446 replySize, 6447 pReplyData); 6448 if (cmdCode != EFFECT_CMD_GET_PARAM && status == NO_ERROR) { 6449 uint32_t size = (replySize == NULL) ? 0 : *replySize; 6450 for (size_t i = 1; i < mHandles.size(); i++) { 6451 sp<EffectHandle> h = mHandles[i].promote(); 6452 if (h != 0) { 6453 h->commandExecuted(cmdCode, cmdSize, pCmdData, size, pReplyData); 6454 } 6455 } 6456 } 6457 return status; 6458} 6459 6460status_t AudioFlinger::EffectModule::setEnabled(bool enabled) 6461{ 6462 6463 Mutex::Autolock _l(mLock); 6464 LOGV("setEnabled %p enabled %d", this, enabled); 6465 6466 if (enabled != isEnabled()) { 6467 status_t status = AudioSystem::setEffectEnabled(mId, enabled); 6468 if (enabled && status != NO_ERROR) { 6469 return status; 6470 } 6471 6472 switch (mState) { 6473 // going from disabled to enabled 6474 case IDLE: 6475 mState = STARTING; 6476 break; 6477 case STOPPED: 6478 mState = RESTART; 6479 break; 6480 case STOPPING: 6481 mState = ACTIVE; 6482 break; 6483 6484 // going from enabled to disabled 6485 case RESTART: 6486 mState = STOPPED; 6487 break; 6488 case STARTING: 6489 mState = IDLE; 6490 break; 6491 case ACTIVE: 6492 mState = STOPPING; 6493 break; 6494 case DESTROYED: 6495 return NO_ERROR; // simply ignore as we are being destroyed 6496 } 6497 for (size_t i = 1; i < mHandles.size(); i++) { 6498 sp<EffectHandle> h = mHandles[i].promote(); 6499 if (h != 0) { 6500 h->setEnabled(enabled); 6501 } 6502 } 6503 } 6504 return NO_ERROR; 6505} 6506 6507bool AudioFlinger::EffectModule::isEnabled() 6508{ 6509 switch (mState) { 6510 case RESTART: 6511 case STARTING: 6512 case ACTIVE: 6513 return true; 6514 case IDLE: 6515 case STOPPING: 6516 case STOPPED: 6517 case DESTROYED: 6518 default: 6519 return false; 6520 } 6521} 6522 6523bool AudioFlinger::EffectModule::isProcessEnabled() 6524{ 6525 switch (mState) { 6526 case RESTART: 6527 case ACTIVE: 6528 case STOPPING: 6529 case STOPPED: 6530 return true; 6531 case IDLE: 6532 case STARTING: 6533 case DESTROYED: 6534 default: 6535 return false; 6536 } 6537} 6538 6539status_t AudioFlinger::EffectModule::setVolume(uint32_t *left, uint32_t *right, bool controller) 6540{ 6541 Mutex::Autolock _l(mLock); 6542 status_t status = NO_ERROR; 6543 6544 // Send volume indication if EFFECT_FLAG_VOLUME_IND is set and read back altered volume 6545 // if controller flag is set (Note that controller == TRUE => EFFECT_FLAG_VOLUME_CTRL set) 6546 if (isProcessEnabled() && 6547 ((mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL || 6548 (mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_IND)) { 6549 status_t cmdStatus; 6550 uint32_t volume[2]; 6551 uint32_t *pVolume = NULL; 6552 uint32_t size = sizeof(volume); 6553 volume[0] = *left; 6554 volume[1] = *right; 6555 if (controller) { 6556 pVolume = volume; 6557 } 6558 status = (*mEffectInterface)->command(mEffectInterface, 6559 EFFECT_CMD_SET_VOLUME, 6560 size, 6561 volume, 6562 &size, 6563 pVolume); 6564 if (controller && status == NO_ERROR && size == sizeof(volume)) { 6565 *left = volume[0]; 6566 *right = volume[1]; 6567 } 6568 } 6569 return status; 6570} 6571 6572status_t AudioFlinger::EffectModule::setDevice(uint32_t device) 6573{ 6574 Mutex::Autolock _l(mLock); 6575 status_t status = NO_ERROR; 6576 if (device && (mDescriptor.flags & EFFECT_FLAG_DEVICE_MASK) == EFFECT_FLAG_DEVICE_IND) { 6577 // audio pre processing modules on RecordThread can receive both output and 6578 // input device indication in the same call 6579 uint32_t dev = device & AUDIO_DEVICE_OUT_ALL; 6580 if (dev) { 6581 status_t cmdStatus; 6582 uint32_t size = sizeof(status_t); 6583 6584 status = (*mEffectInterface)->command(mEffectInterface, 6585 EFFECT_CMD_SET_DEVICE, 6586 sizeof(uint32_t), 6587 &dev, 6588 &size, 6589 &cmdStatus); 6590 if (status == NO_ERROR) { 6591 status = cmdStatus; 6592 } 6593 } 6594 dev = device & AUDIO_DEVICE_IN_ALL; 6595 if (dev) { 6596 status_t cmdStatus; 6597 uint32_t size = sizeof(status_t); 6598 6599 status_t status2 = (*mEffectInterface)->command(mEffectInterface, 6600 EFFECT_CMD_SET_INPUT_DEVICE, 6601 sizeof(uint32_t), 6602 &dev, 6603 &size, 6604 &cmdStatus); 6605 if (status2 == NO_ERROR) { 6606 status2 = cmdStatus; 6607 } 6608 if (status == NO_ERROR) { 6609 status = status2; 6610 } 6611 } 6612 } 6613 return status; 6614} 6615 6616status_t AudioFlinger::EffectModule::setMode(uint32_t mode) 6617{ 6618 Mutex::Autolock _l(mLock); 6619 status_t status = NO_ERROR; 6620 if ((mDescriptor.flags & EFFECT_FLAG_AUDIO_MODE_MASK) == EFFECT_FLAG_AUDIO_MODE_IND) { 6621 status_t cmdStatus; 6622 uint32_t size = sizeof(status_t); 6623 status = (*mEffectInterface)->command(mEffectInterface, 6624 EFFECT_CMD_SET_AUDIO_MODE, 6625 sizeof(int), 6626 &mode, 6627 &size, 6628 &cmdStatus); 6629 if (status == NO_ERROR) { 6630 status = cmdStatus; 6631 } 6632 } 6633 return status; 6634} 6635 6636void AudioFlinger::EffectModule::setSuspended(bool suspended) 6637{ 6638 Mutex::Autolock _l(mLock); 6639 mSuspended = suspended; 6640} 6641bool AudioFlinger::EffectModule::suspended() 6642{ 6643 Mutex::Autolock _l(mLock); 6644 return mSuspended; 6645} 6646 6647status_t AudioFlinger::EffectModule::dump(int fd, const Vector<String16>& args) 6648{ 6649 const size_t SIZE = 256; 6650 char buffer[SIZE]; 6651 String8 result; 6652 6653 snprintf(buffer, SIZE, "\tEffect ID %d:\n", mId); 6654 result.append(buffer); 6655 6656 bool locked = tryLock(mLock); 6657 // failed to lock - AudioFlinger is probably deadlocked 6658 if (!locked) { 6659 result.append("\t\tCould not lock Fx mutex:\n"); 6660 } 6661 6662 result.append("\t\tSession Status State Engine:\n"); 6663 snprintf(buffer, SIZE, "\t\t%05d %03d %03d 0x%08x\n", 6664 mSessionId, mStatus, mState, (uint32_t)mEffectInterface); 6665 result.append(buffer); 6666 6667 result.append("\t\tDescriptor:\n"); 6668 snprintf(buffer, SIZE, "\t\t- UUID: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 6669 mDescriptor.uuid.timeLow, mDescriptor.uuid.timeMid, mDescriptor.uuid.timeHiAndVersion, 6670 mDescriptor.uuid.clockSeq, mDescriptor.uuid.node[0], mDescriptor.uuid.node[1],mDescriptor.uuid.node[2], 6671 mDescriptor.uuid.node[3],mDescriptor.uuid.node[4],mDescriptor.uuid.node[5]); 6672 result.append(buffer); 6673 snprintf(buffer, SIZE, "\t\t- TYPE: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 6674 mDescriptor.type.timeLow, mDescriptor.type.timeMid, mDescriptor.type.timeHiAndVersion, 6675 mDescriptor.type.clockSeq, mDescriptor.type.node[0], mDescriptor.type.node[1],mDescriptor.type.node[2], 6676 mDescriptor.type.node[3],mDescriptor.type.node[4],mDescriptor.type.node[5]); 6677 result.append(buffer); 6678 snprintf(buffer, SIZE, "\t\t- apiVersion: %08X\n\t\t- flags: %08X\n", 6679 mDescriptor.apiVersion, 6680 mDescriptor.flags); 6681 result.append(buffer); 6682 snprintf(buffer, SIZE, "\t\t- name: %s\n", 6683 mDescriptor.name); 6684 result.append(buffer); 6685 snprintf(buffer, SIZE, "\t\t- implementor: %s\n", 6686 mDescriptor.implementor); 6687 result.append(buffer); 6688 6689 result.append("\t\t- Input configuration:\n"); 6690 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 6691 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 6692 (uint32_t)mConfig.inputCfg.buffer.raw, 6693 mConfig.inputCfg.buffer.frameCount, 6694 mConfig.inputCfg.samplingRate, 6695 mConfig.inputCfg.channels, 6696 mConfig.inputCfg.format); 6697 result.append(buffer); 6698 6699 result.append("\t\t- Output configuration:\n"); 6700 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 6701 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 6702 (uint32_t)mConfig.outputCfg.buffer.raw, 6703 mConfig.outputCfg.buffer.frameCount, 6704 mConfig.outputCfg.samplingRate, 6705 mConfig.outputCfg.channels, 6706 mConfig.outputCfg.format); 6707 result.append(buffer); 6708 6709 snprintf(buffer, SIZE, "\t\t%d Clients:\n", mHandles.size()); 6710 result.append(buffer); 6711 result.append("\t\t\tPid Priority Ctrl Locked client server\n"); 6712 for (size_t i = 0; i < mHandles.size(); ++i) { 6713 sp<EffectHandle> handle = mHandles[i].promote(); 6714 if (handle != 0) { 6715 handle->dump(buffer, SIZE); 6716 result.append(buffer); 6717 } 6718 } 6719 6720 result.append("\n"); 6721 6722 write(fd, result.string(), result.length()); 6723 6724 if (locked) { 6725 mLock.unlock(); 6726 } 6727 6728 return NO_ERROR; 6729} 6730 6731// ---------------------------------------------------------------------------- 6732// EffectHandle implementation 6733// ---------------------------------------------------------------------------- 6734 6735#undef LOG_TAG 6736#define LOG_TAG "AudioFlinger::EffectHandle" 6737 6738AudioFlinger::EffectHandle::EffectHandle(const sp<EffectModule>& effect, 6739 const sp<AudioFlinger::Client>& client, 6740 const sp<IEffectClient>& effectClient, 6741 int32_t priority) 6742 : BnEffect(), 6743 mEffect(effect), mEffectClient(effectClient), mClient(client), mCblk(NULL), 6744 mPriority(priority), mHasControl(false), mEnabled(false) 6745{ 6746 LOGV("constructor %p", this); 6747 6748 if (client == 0) { 6749 return; 6750 } 6751 int bufOffset = ((sizeof(effect_param_cblk_t) - 1) / sizeof(int) + 1) * sizeof(int); 6752 mCblkMemory = client->heap()->allocate(EFFECT_PARAM_BUFFER_SIZE + bufOffset); 6753 if (mCblkMemory != 0) { 6754 mCblk = static_cast<effect_param_cblk_t *>(mCblkMemory->pointer()); 6755 6756 if (mCblk) { 6757 new(mCblk) effect_param_cblk_t(); 6758 mBuffer = (uint8_t *)mCblk + bufOffset; 6759 } 6760 } else { 6761 LOGE("not enough memory for Effect size=%u", EFFECT_PARAM_BUFFER_SIZE + sizeof(effect_param_cblk_t)); 6762 return; 6763 } 6764} 6765 6766AudioFlinger::EffectHandle::~EffectHandle() 6767{ 6768 LOGV("Destructor %p", this); 6769 disconnect(false); 6770 LOGV("Destructor DONE %p", this); 6771} 6772 6773status_t AudioFlinger::EffectHandle::enable() 6774{ 6775 LOGV("enable %p", this); 6776 if (!mHasControl) return INVALID_OPERATION; 6777 if (mEffect == 0) return DEAD_OBJECT; 6778 6779 if (mEnabled) { 6780 return NO_ERROR; 6781 } 6782 6783 mEnabled = true; 6784 6785 sp<ThreadBase> thread = mEffect->thread().promote(); 6786 if (thread != 0) { 6787 thread->checkSuspendOnEffectEnabled(mEffect, true, mEffect->sessionId()); 6788 } 6789 6790 // checkSuspendOnEffectEnabled() can suspend this same effect when enabled 6791 if (mEffect->suspended()) { 6792 return NO_ERROR; 6793 } 6794 6795 status_t status = mEffect->setEnabled(true); 6796 if (status != NO_ERROR) { 6797 if (thread != 0) { 6798 thread->checkSuspendOnEffectEnabled(mEffect, false, mEffect->sessionId()); 6799 } 6800 mEnabled = false; 6801 } 6802 return status; 6803} 6804 6805status_t AudioFlinger::EffectHandle::disable() 6806{ 6807 LOGV("disable %p", this); 6808 if (!mHasControl) return INVALID_OPERATION; 6809 if (mEffect == 0) return DEAD_OBJECT; 6810 6811 if (!mEnabled) { 6812 return NO_ERROR; 6813 } 6814 mEnabled = false; 6815 6816 if (mEffect->suspended()) { 6817 return NO_ERROR; 6818 } 6819 6820 status_t status = mEffect->setEnabled(false); 6821 6822 sp<ThreadBase> thread = mEffect->thread().promote(); 6823 if (thread != 0) { 6824 thread->checkSuspendOnEffectEnabled(mEffect, false, mEffect->sessionId()); 6825 } 6826 6827 return status; 6828} 6829 6830void AudioFlinger::EffectHandle::disconnect() 6831{ 6832 disconnect(true); 6833} 6834 6835void AudioFlinger::EffectHandle::disconnect(bool unpiniflast) 6836{ 6837 LOGV("disconnect(%s)", unpiniflast ? "true" : "false"); 6838 if (mEffect == 0) { 6839 return; 6840 } 6841 mEffect->disconnect(this, unpiniflast); 6842 6843 if (mEnabled) { 6844 sp<ThreadBase> thread = mEffect->thread().promote(); 6845 if (thread != 0) { 6846 thread->checkSuspendOnEffectEnabled(mEffect, false, mEffect->sessionId()); 6847 } 6848 } 6849 6850 // release sp on module => module destructor can be called now 6851 mEffect.clear(); 6852 if (mClient != 0) { 6853 if (mCblk) { 6854 mCblk->~effect_param_cblk_t(); // destroy our shared-structure. 6855 } 6856 mCblkMemory.clear(); // and free the shared memory 6857 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 6858 mClient.clear(); 6859 } 6860} 6861 6862status_t AudioFlinger::EffectHandle::command(uint32_t cmdCode, 6863 uint32_t cmdSize, 6864 void *pCmdData, 6865 uint32_t *replySize, 6866 void *pReplyData) 6867{ 6868// LOGV("command(), cmdCode: %d, mHasControl: %d, mEffect: %p", 6869// cmdCode, mHasControl, (mEffect == 0) ? 0 : mEffect.get()); 6870 6871 // only get parameter command is permitted for applications not controlling the effect 6872 if (!mHasControl && cmdCode != EFFECT_CMD_GET_PARAM) { 6873 return INVALID_OPERATION; 6874 } 6875 if (mEffect == 0) return DEAD_OBJECT; 6876 if (mClient == 0) return INVALID_OPERATION; 6877 6878 // handle commands that are not forwarded transparently to effect engine 6879 if (cmdCode == EFFECT_CMD_SET_PARAM_COMMIT) { 6880 // No need to trylock() here as this function is executed in the binder thread serving a particular client process: 6881 // no risk to block the whole media server process or mixer threads is we are stuck here 6882 Mutex::Autolock _l(mCblk->lock); 6883 if (mCblk->clientIndex > EFFECT_PARAM_BUFFER_SIZE || 6884 mCblk->serverIndex > EFFECT_PARAM_BUFFER_SIZE) { 6885 mCblk->serverIndex = 0; 6886 mCblk->clientIndex = 0; 6887 return BAD_VALUE; 6888 } 6889 status_t status = NO_ERROR; 6890 while (mCblk->serverIndex < mCblk->clientIndex) { 6891 int reply; 6892 uint32_t rsize = sizeof(int); 6893 int *p = (int *)(mBuffer + mCblk->serverIndex); 6894 int size = *p++; 6895 if (((uint8_t *)p + size) > mBuffer + mCblk->clientIndex) { 6896 LOGW("command(): invalid parameter block size"); 6897 break; 6898 } 6899 effect_param_t *param = (effect_param_t *)p; 6900 if (param->psize == 0 || param->vsize == 0) { 6901 LOGW("command(): null parameter or value size"); 6902 mCblk->serverIndex += size; 6903 continue; 6904 } 6905 uint32_t psize = sizeof(effect_param_t) + 6906 ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + 6907 param->vsize; 6908 status_t ret = mEffect->command(EFFECT_CMD_SET_PARAM, 6909 psize, 6910 p, 6911 &rsize, 6912 &reply); 6913 // stop at first error encountered 6914 if (ret != NO_ERROR) { 6915 status = ret; 6916 *(int *)pReplyData = reply; 6917 break; 6918 } else if (reply != NO_ERROR) { 6919 *(int *)pReplyData = reply; 6920 break; 6921 } 6922 mCblk->serverIndex += size; 6923 } 6924 mCblk->serverIndex = 0; 6925 mCblk->clientIndex = 0; 6926 return status; 6927 } else if (cmdCode == EFFECT_CMD_ENABLE) { 6928 *(int *)pReplyData = NO_ERROR; 6929 return enable(); 6930 } else if (cmdCode == EFFECT_CMD_DISABLE) { 6931 *(int *)pReplyData = NO_ERROR; 6932 return disable(); 6933 } 6934 6935 return mEffect->command(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6936} 6937 6938sp<IMemory> AudioFlinger::EffectHandle::getCblk() const { 6939 return mCblkMemory; 6940} 6941 6942void AudioFlinger::EffectHandle::setControl(bool hasControl, bool signal, bool enabled) 6943{ 6944 LOGV("setControl %p control %d", this, hasControl); 6945 6946 mHasControl = hasControl; 6947 mEnabled = enabled; 6948 6949 if (signal && mEffectClient != 0) { 6950 mEffectClient->controlStatusChanged(hasControl); 6951 } 6952} 6953 6954void AudioFlinger::EffectHandle::commandExecuted(uint32_t cmdCode, 6955 uint32_t cmdSize, 6956 void *pCmdData, 6957 uint32_t replySize, 6958 void *pReplyData) 6959{ 6960 if (mEffectClient != 0) { 6961 mEffectClient->commandExecuted(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6962 } 6963} 6964 6965 6966 6967void AudioFlinger::EffectHandle::setEnabled(bool enabled) 6968{ 6969 if (mEffectClient != 0) { 6970 mEffectClient->enableStatusChanged(enabled); 6971 } 6972} 6973 6974status_t AudioFlinger::EffectHandle::onTransact( 6975 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 6976{ 6977 return BnEffect::onTransact(code, data, reply, flags); 6978} 6979 6980 6981void AudioFlinger::EffectHandle::dump(char* buffer, size_t size) 6982{ 6983 bool locked = mCblk ? tryLock(mCblk->lock) : false; 6984 6985 snprintf(buffer, size, "\t\t\t%05d %05d %01u %01u %05u %05u\n", 6986 (mClient == NULL) ? getpid() : mClient->pid(), 6987 mPriority, 6988 mHasControl, 6989 !locked, 6990 mCblk ? mCblk->clientIndex : 0, 6991 mCblk ? mCblk->serverIndex : 0 6992 ); 6993 6994 if (locked) { 6995 mCblk->lock.unlock(); 6996 } 6997} 6998 6999#undef LOG_TAG 7000#define LOG_TAG "AudioFlinger::EffectChain" 7001 7002AudioFlinger::EffectChain::EffectChain(const wp<ThreadBase>& wThread, 7003 int sessionId) 7004 : mThread(wThread), mSessionId(sessionId), mActiveTrackCnt(0), mTrackCnt(0), 7005 mOwnInBuffer(false), mVolumeCtrlIdx(-1), mLeftVolume(UINT_MAX), mRightVolume(UINT_MAX), 7006 mNewLeftVolume(UINT_MAX), mNewRightVolume(UINT_MAX) 7007{ 7008 mStrategy = AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 7009} 7010 7011AudioFlinger::EffectChain::~EffectChain() 7012{ 7013 if (mOwnInBuffer) { 7014 delete mInBuffer; 7015 } 7016 7017} 7018 7019// getEffectFromDesc_l() must be called with ThreadBase::mLock held 7020sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromDesc_l(effect_descriptor_t *descriptor) 7021{ 7022 sp<EffectModule> effect; 7023 size_t size = mEffects.size(); 7024 7025 for (size_t i = 0; i < size; i++) { 7026 if (memcmp(&mEffects[i]->desc().uuid, &descriptor->uuid, sizeof(effect_uuid_t)) == 0) { 7027 effect = mEffects[i]; 7028 break; 7029 } 7030 } 7031 return effect; 7032} 7033 7034// getEffectFromId_l() must be called with ThreadBase::mLock held 7035sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromId_l(int id) 7036{ 7037 sp<EffectModule> effect; 7038 size_t size = mEffects.size(); 7039 7040 for (size_t i = 0; i < size; i++) { 7041 // by convention, return first effect if id provided is 0 (0 is never a valid id) 7042 if (id == 0 || mEffects[i]->id() == id) { 7043 effect = mEffects[i]; 7044 break; 7045 } 7046 } 7047 return effect; 7048} 7049 7050// getEffectFromType_l() must be called with ThreadBase::mLock held 7051sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromType_l( 7052 const effect_uuid_t *type) 7053{ 7054 sp<EffectModule> effect; 7055 size_t size = mEffects.size(); 7056 7057 for (size_t i = 0; i < size; i++) { 7058 if (memcmp(&mEffects[i]->desc().type, type, sizeof(effect_uuid_t)) == 0) { 7059 effect = mEffects[i]; 7060 break; 7061 } 7062 } 7063 return effect; 7064} 7065 7066// Must be called with EffectChain::mLock locked 7067void AudioFlinger::EffectChain::process_l() 7068{ 7069 sp<ThreadBase> thread = mThread.promote(); 7070 if (thread == 0) { 7071 LOGW("process_l(): cannot promote mixer thread"); 7072 return; 7073 } 7074 bool isGlobalSession = (mSessionId == AUDIO_SESSION_OUTPUT_MIX) || 7075 (mSessionId == AUDIO_SESSION_OUTPUT_STAGE); 7076 bool tracksOnSession = false; 7077 if (!isGlobalSession) { 7078 tracksOnSession = (trackCnt() != 0); 7079 } 7080 7081 // if no track is active, input buffer must be cleared here as the mixer process 7082 // will not do it 7083 if (tracksOnSession && 7084 activeTrackCnt() == 0) { 7085 size_t numSamples = thread->frameCount() * thread->channelCount(); 7086 memset(mInBuffer, 0, numSamples * sizeof(int16_t)); 7087 } 7088 7089 size_t size = mEffects.size(); 7090 // do not process effect if no track is present in same audio session 7091 if (isGlobalSession || tracksOnSession) { 7092 for (size_t i = 0; i < size; i++) { 7093 mEffects[i]->process(); 7094 } 7095 } 7096 for (size_t i = 0; i < size; i++) { 7097 mEffects[i]->updateState(); 7098 } 7099} 7100 7101// addEffect_l() must be called with PlaybackThread::mLock held 7102status_t AudioFlinger::EffectChain::addEffect_l(const sp<EffectModule>& effect) 7103{ 7104 effect_descriptor_t desc = effect->desc(); 7105 uint32_t insertPref = desc.flags & EFFECT_FLAG_INSERT_MASK; 7106 7107 Mutex::Autolock _l(mLock); 7108 effect->setChain(this); 7109 sp<ThreadBase> thread = mThread.promote(); 7110 if (thread == 0) { 7111 return NO_INIT; 7112 } 7113 effect->setThread(thread); 7114 7115 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 7116 // Auxiliary effects are inserted at the beginning of mEffects vector as 7117 // they are processed first and accumulated in chain input buffer 7118 mEffects.insertAt(effect, 0); 7119 7120 // the input buffer for auxiliary effect contains mono samples in 7121 // 32 bit format. This is to avoid saturation in AudoMixer 7122 // accumulation stage. Saturation is done in EffectModule::process() before 7123 // calling the process in effect engine 7124 size_t numSamples = thread->frameCount(); 7125 int32_t *buffer = new int32_t[numSamples]; 7126 memset(buffer, 0, numSamples * sizeof(int32_t)); 7127 effect->setInBuffer((int16_t *)buffer); 7128 // auxiliary effects output samples to chain input buffer for further processing 7129 // by insert effects 7130 effect->setOutBuffer(mInBuffer); 7131 } else { 7132 // Insert effects are inserted at the end of mEffects vector as they are processed 7133 // after track and auxiliary effects. 7134 // Insert effect order as a function of indicated preference: 7135 // if EFFECT_FLAG_INSERT_EXCLUSIVE, insert in first position or reject if 7136 // another effect is present 7137 // else if EFFECT_FLAG_INSERT_FIRST, insert in first position or after the 7138 // last effect claiming first position 7139 // else if EFFECT_FLAG_INSERT_LAST, insert in last position or before the 7140 // first effect claiming last position 7141 // else if EFFECT_FLAG_INSERT_ANY insert after first or before last 7142 // Reject insertion if an effect with EFFECT_FLAG_INSERT_EXCLUSIVE is 7143 // already present 7144 7145 int size = (int)mEffects.size(); 7146 int idx_insert = size; 7147 int idx_insert_first = -1; 7148 int idx_insert_last = -1; 7149 7150 for (int i = 0; i < size; i++) { 7151 effect_descriptor_t d = mEffects[i]->desc(); 7152 uint32_t iMode = d.flags & EFFECT_FLAG_TYPE_MASK; 7153 uint32_t iPref = d.flags & EFFECT_FLAG_INSERT_MASK; 7154 if (iMode == EFFECT_FLAG_TYPE_INSERT) { 7155 // check invalid effect chaining combinations 7156 if (insertPref == EFFECT_FLAG_INSERT_EXCLUSIVE || 7157 iPref == EFFECT_FLAG_INSERT_EXCLUSIVE) { 7158 LOGW("addEffect_l() could not insert effect %s: exclusive conflict with %s", desc.name, d.name); 7159 return INVALID_OPERATION; 7160 } 7161 // remember position of first insert effect and by default 7162 // select this as insert position for new effect 7163 if (idx_insert == size) { 7164 idx_insert = i; 7165 } 7166 // remember position of last insert effect claiming 7167 // first position 7168 if (iPref == EFFECT_FLAG_INSERT_FIRST) { 7169 idx_insert_first = i; 7170 } 7171 // remember position of first insert effect claiming 7172 // last position 7173 if (iPref == EFFECT_FLAG_INSERT_LAST && 7174 idx_insert_last == -1) { 7175 idx_insert_last = i; 7176 } 7177 } 7178 } 7179 7180 // modify idx_insert from first position if needed 7181 if (insertPref == EFFECT_FLAG_INSERT_LAST) { 7182 if (idx_insert_last != -1) { 7183 idx_insert = idx_insert_last; 7184 } else { 7185 idx_insert = size; 7186 } 7187 } else { 7188 if (idx_insert_first != -1) { 7189 idx_insert = idx_insert_first + 1; 7190 } 7191 } 7192 7193 // always read samples from chain input buffer 7194 effect->setInBuffer(mInBuffer); 7195 7196 // if last effect in the chain, output samples to chain 7197 // output buffer, otherwise to chain input buffer 7198 if (idx_insert == size) { 7199 if (idx_insert != 0) { 7200 mEffects[idx_insert-1]->setOutBuffer(mInBuffer); 7201 mEffects[idx_insert-1]->configure(); 7202 } 7203 effect->setOutBuffer(mOutBuffer); 7204 } else { 7205 effect->setOutBuffer(mInBuffer); 7206 } 7207 mEffects.insertAt(effect, idx_insert); 7208 7209 LOGV("addEffect_l() effect %p, added in chain %p at rank %d", effect.get(), this, idx_insert); 7210 } 7211 effect->configure(); 7212 return NO_ERROR; 7213} 7214 7215// removeEffect_l() must be called with PlaybackThread::mLock held 7216size_t AudioFlinger::EffectChain::removeEffect_l(const sp<EffectModule>& effect) 7217{ 7218 Mutex::Autolock _l(mLock); 7219 int size = (int)mEffects.size(); 7220 int i; 7221 uint32_t type = effect->desc().flags & EFFECT_FLAG_TYPE_MASK; 7222 7223 for (i = 0; i < size; i++) { 7224 if (effect == mEffects[i]) { 7225 // calling stop here will remove pre-processing effect from the audio HAL. 7226 // This is safe as we hold the EffectChain mutex which guarantees that we are not in 7227 // the middle of a read from audio HAL 7228 if (mEffects[i]->state() == EffectModule::ACTIVE || 7229 mEffects[i]->state() == EffectModule::STOPPING) { 7230 mEffects[i]->stop(); 7231 } 7232 if (type == EFFECT_FLAG_TYPE_AUXILIARY) { 7233 delete[] effect->inBuffer(); 7234 } else { 7235 if (i == size - 1 && i != 0) { 7236 mEffects[i - 1]->setOutBuffer(mOutBuffer); 7237 mEffects[i - 1]->configure(); 7238 } 7239 } 7240 mEffects.removeAt(i); 7241 LOGV("removeEffect_l() effect %p, removed from chain %p at rank %d", effect.get(), this, i); 7242 break; 7243 } 7244 } 7245 7246 return mEffects.size(); 7247} 7248 7249// setDevice_l() must be called with PlaybackThread::mLock held 7250void AudioFlinger::EffectChain::setDevice_l(uint32_t device) 7251{ 7252 size_t size = mEffects.size(); 7253 for (size_t i = 0; i < size; i++) { 7254 mEffects[i]->setDevice(device); 7255 } 7256} 7257 7258// setMode_l() must be called with PlaybackThread::mLock held 7259void AudioFlinger::EffectChain::setMode_l(uint32_t mode) 7260{ 7261 size_t size = mEffects.size(); 7262 for (size_t i = 0; i < size; i++) { 7263 mEffects[i]->setMode(mode); 7264 } 7265} 7266 7267// setVolume_l() must be called with PlaybackThread::mLock held 7268bool AudioFlinger::EffectChain::setVolume_l(uint32_t *left, uint32_t *right) 7269{ 7270 uint32_t newLeft = *left; 7271 uint32_t newRight = *right; 7272 bool hasControl = false; 7273 int ctrlIdx = -1; 7274 size_t size = mEffects.size(); 7275 7276 // first update volume controller 7277 for (size_t i = size; i > 0; i--) { 7278 if (mEffects[i - 1]->isProcessEnabled() && 7279 (mEffects[i - 1]->desc().flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL) { 7280 ctrlIdx = i - 1; 7281 hasControl = true; 7282 break; 7283 } 7284 } 7285 7286 if (ctrlIdx == mVolumeCtrlIdx && *left == mLeftVolume && *right == mRightVolume) { 7287 if (hasControl) { 7288 *left = mNewLeftVolume; 7289 *right = mNewRightVolume; 7290 } 7291 return hasControl; 7292 } 7293 7294 mVolumeCtrlIdx = ctrlIdx; 7295 mLeftVolume = newLeft; 7296 mRightVolume = newRight; 7297 7298 // second get volume update from volume controller 7299 if (ctrlIdx >= 0) { 7300 mEffects[ctrlIdx]->setVolume(&newLeft, &newRight, true); 7301 mNewLeftVolume = newLeft; 7302 mNewRightVolume = newRight; 7303 } 7304 // then indicate volume to all other effects in chain. 7305 // Pass altered volume to effects before volume controller 7306 // and requested volume to effects after controller 7307 uint32_t lVol = newLeft; 7308 uint32_t rVol = newRight; 7309 7310 for (size_t i = 0; i < size; i++) { 7311 if ((int)i == ctrlIdx) continue; 7312 // this also works for ctrlIdx == -1 when there is no volume controller 7313 if ((int)i > ctrlIdx) { 7314 lVol = *left; 7315 rVol = *right; 7316 } 7317 mEffects[i]->setVolume(&lVol, &rVol, false); 7318 } 7319 *left = newLeft; 7320 *right = newRight; 7321 7322 return hasControl; 7323} 7324 7325status_t AudioFlinger::EffectChain::dump(int fd, const Vector<String16>& args) 7326{ 7327 const size_t SIZE = 256; 7328 char buffer[SIZE]; 7329 String8 result; 7330 7331 snprintf(buffer, SIZE, "Effects for session %d:\n", mSessionId); 7332 result.append(buffer); 7333 7334 bool locked = tryLock(mLock); 7335 // failed to lock - AudioFlinger is probably deadlocked 7336 if (!locked) { 7337 result.append("\tCould not lock mutex:\n"); 7338 } 7339 7340 result.append("\tNum fx In buffer Out buffer Active tracks:\n"); 7341 snprintf(buffer, SIZE, "\t%02d 0x%08x 0x%08x %d\n", 7342 mEffects.size(), 7343 (uint32_t)mInBuffer, 7344 (uint32_t)mOutBuffer, 7345 mActiveTrackCnt); 7346 result.append(buffer); 7347 write(fd, result.string(), result.size()); 7348 7349 for (size_t i = 0; i < mEffects.size(); ++i) { 7350 sp<EffectModule> effect = mEffects[i]; 7351 if (effect != 0) { 7352 effect->dump(fd, args); 7353 } 7354 } 7355 7356 if (locked) { 7357 mLock.unlock(); 7358 } 7359 7360 return NO_ERROR; 7361} 7362 7363// must be called with ThreadBase::mLock held 7364void AudioFlinger::EffectChain::setEffectSuspended_l( 7365 const effect_uuid_t *type, bool suspend) 7366{ 7367 sp<SuspendedEffectDesc> desc; 7368 // use effect type UUID timelow as key as there is no real risk of identical 7369 // timeLow fields among effect type UUIDs. 7370 int index = mSuspendedEffects.indexOfKey(type->timeLow); 7371 if (suspend) { 7372 if (index >= 0) { 7373 desc = mSuspendedEffects.valueAt(index); 7374 } else { 7375 desc = new SuspendedEffectDesc(); 7376 memcpy(&desc->mType, type, sizeof(effect_uuid_t)); 7377 mSuspendedEffects.add(type->timeLow, desc); 7378 LOGV("setEffectSuspended_l() add entry for %08x", type->timeLow); 7379 } 7380 if (desc->mRefCount++ == 0) { 7381 sp<EffectModule> effect = getEffectIfEnabled(type); 7382 if (effect != 0) { 7383 desc->mEffect = effect; 7384 effect->setSuspended(true); 7385 effect->setEnabled(false); 7386 } 7387 } 7388 } else { 7389 if (index < 0) { 7390 return; 7391 } 7392 desc = mSuspendedEffects.valueAt(index); 7393 if (desc->mRefCount <= 0) { 7394 LOGW("setEffectSuspended_l() restore refcount should not be 0 %d", desc->mRefCount); 7395 desc->mRefCount = 1; 7396 } 7397 if (--desc->mRefCount == 0) { 7398 LOGV("setEffectSuspended_l() remove entry for %08x", mSuspendedEffects.keyAt(index)); 7399 if (desc->mEffect != 0) { 7400 sp<EffectModule> effect = desc->mEffect.promote(); 7401 if (effect != 0) { 7402 effect->setSuspended(false); 7403 sp<EffectHandle> handle = effect->controlHandle(); 7404 if (handle != 0) { 7405 effect->setEnabled(handle->enabled()); 7406 } 7407 } 7408 desc->mEffect.clear(); 7409 } 7410 mSuspendedEffects.removeItemsAt(index); 7411 } 7412 } 7413} 7414 7415// must be called with ThreadBase::mLock held 7416void AudioFlinger::EffectChain::setEffectSuspendedAll_l(bool suspend) 7417{ 7418 sp<SuspendedEffectDesc> desc; 7419 7420 int index = mSuspendedEffects.indexOfKey((int)kKeyForSuspendAll); 7421 if (suspend) { 7422 if (index >= 0) { 7423 desc = mSuspendedEffects.valueAt(index); 7424 } else { 7425 desc = new SuspendedEffectDesc(); 7426 mSuspendedEffects.add((int)kKeyForSuspendAll, desc); 7427 LOGV("setEffectSuspendedAll_l() add entry for 0"); 7428 } 7429 if (desc->mRefCount++ == 0) { 7430 Vector< sp<EffectModule> > effects = getSuspendEligibleEffects(); 7431 for (size_t i = 0; i < effects.size(); i++) { 7432 setEffectSuspended_l(&effects[i]->desc().type, true); 7433 } 7434 } 7435 } else { 7436 if (index < 0) { 7437 return; 7438 } 7439 desc = mSuspendedEffects.valueAt(index); 7440 if (desc->mRefCount <= 0) { 7441 LOGW("setEffectSuspendedAll_l() restore refcount should not be 0 %d", desc->mRefCount); 7442 desc->mRefCount = 1; 7443 } 7444 if (--desc->mRefCount == 0) { 7445 Vector<const effect_uuid_t *> types; 7446 for (size_t i = 0; i < mSuspendedEffects.size(); i++) { 7447 if (mSuspendedEffects.keyAt(i) == (int)kKeyForSuspendAll) { 7448 continue; 7449 } 7450 types.add(&mSuspendedEffects.valueAt(i)->mType); 7451 } 7452 for (size_t i = 0; i < types.size(); i++) { 7453 setEffectSuspended_l(types[i], false); 7454 } 7455 LOGV("setEffectSuspendedAll_l() remove entry for %08x", mSuspendedEffects.keyAt(index)); 7456 mSuspendedEffects.removeItem((int)kKeyForSuspendAll); 7457 } 7458 } 7459} 7460 7461 7462// The volume effect is used for automated tests only 7463#ifndef OPENSL_ES_H_ 7464static const effect_uuid_t SL_IID_VOLUME_ = { 0x09e8ede0, 0xddde, 0x11db, 0xb4f6, 7465 { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } }; 7466const effect_uuid_t * const SL_IID_VOLUME = &SL_IID_VOLUME_; 7467#endif //OPENSL_ES_H_ 7468 7469bool AudioFlinger::EffectChain::isEffectEligibleForSuspend(const effect_descriptor_t& desc) 7470{ 7471 // auxiliary effects and visualizer are never suspended on output mix 7472 if ((mSessionId == AUDIO_SESSION_OUTPUT_MIX) && 7473 (((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) || 7474 (memcmp(&desc.type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0) || 7475 (memcmp(&desc.type, SL_IID_VOLUME, sizeof(effect_uuid_t)) == 0))) { 7476 return false; 7477 } 7478 return true; 7479} 7480 7481Vector< sp<AudioFlinger::EffectModule> > AudioFlinger::EffectChain::getSuspendEligibleEffects() 7482{ 7483 Vector< sp<EffectModule> > effects; 7484 for (size_t i = 0; i < mEffects.size(); i++) { 7485 if (!isEffectEligibleForSuspend(mEffects[i]->desc())) { 7486 continue; 7487 } 7488 effects.add(mEffects[i]); 7489 } 7490 return effects; 7491} 7492 7493sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectIfEnabled( 7494 const effect_uuid_t *type) 7495{ 7496 sp<EffectModule> effect; 7497 effect = getEffectFromType_l(type); 7498 if (effect != 0 && !effect->isEnabled()) { 7499 effect.clear(); 7500 } 7501 return effect; 7502} 7503 7504void AudioFlinger::EffectChain::checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 7505 bool enabled) 7506{ 7507 int index = mSuspendedEffects.indexOfKey(effect->desc().type.timeLow); 7508 if (enabled) { 7509 if (index < 0) { 7510 // if the effect is not suspend check if all effects are suspended 7511 index = mSuspendedEffects.indexOfKey((int)kKeyForSuspendAll); 7512 if (index < 0) { 7513 return; 7514 } 7515 if (!isEffectEligibleForSuspend(effect->desc())) { 7516 return; 7517 } 7518 setEffectSuspended_l(&effect->desc().type, enabled); 7519 index = mSuspendedEffects.indexOfKey(effect->desc().type.timeLow); 7520 if (index < 0) { 7521 LOGW("checkSuspendOnEffectEnabled() Fx should be suspended here!"); 7522 return; 7523 } 7524 } 7525 LOGV("checkSuspendOnEffectEnabled() enable suspending fx %08x", 7526 effect->desc().type.timeLow); 7527 sp<SuspendedEffectDesc> desc = mSuspendedEffects.valueAt(index); 7528 // if effect is requested to suspended but was not yet enabled, supend it now. 7529 if (desc->mEffect == 0) { 7530 desc->mEffect = effect; 7531 effect->setEnabled(false); 7532 effect->setSuspended(true); 7533 } 7534 } else { 7535 if (index < 0) { 7536 return; 7537 } 7538 LOGV("checkSuspendOnEffectEnabled() disable restoring fx %08x", 7539 effect->desc().type.timeLow); 7540 sp<SuspendedEffectDesc> desc = mSuspendedEffects.valueAt(index); 7541 desc->mEffect.clear(); 7542 effect->setSuspended(false); 7543 } 7544} 7545 7546#undef LOG_TAG 7547#define LOG_TAG "AudioFlinger" 7548 7549// ---------------------------------------------------------------------------- 7550 7551status_t AudioFlinger::onTransact( 7552 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 7553{ 7554 return BnAudioFlinger::onTransact(code, data, reply, flags); 7555} 7556 7557}; // namespace android 7558