AudioFlinger.cpp revision 6977ca7d5ffdbc1610a95c74653b1fbe6a665f32
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 ALOGV("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 ALOGV("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 ALOGV("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// ALOGV("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 ALOGV("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 ALOGV("removeNotificationClient() %p, pid %d", client.get(), pid); 931 mNotificationClients.removeItem(pid); 932 } 933 934 ALOGV("%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 ALOGV(" pid %d @ %d", ref->pid, i); 940 if (ref->pid == pid) { 941 ALOGV(" 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 ALOGV("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 ALOGV("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 ALOGV("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 ALOGV("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 ALOGV("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 ALOGV("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 ALOGV("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 ALOGV("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 ALOGV("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 ALOGV("updateSuspendedSessions_l() restore removing effect %08x", key); 1317 sessionEffects.removeItemsAt(index); 1318 if (sessionEffects.isEmpty()) { 1319 ALOGV("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 checkSuspendOnEffectEnabled_l(effect, enabled, sessionId); 1336} 1337 1338void AudioFlinger::ThreadBase::checkSuspendOnEffectEnabled_l(const sp<EffectModule>& effect, 1339 bool enabled, 1340 int sessionId) 1341{ 1342 if (mType != RECORD) { 1343 // suspend all effects in AUDIO_SESSION_OUTPUT_MIX when enabling any effect on 1344 // another session. This gives the priority to well behaved effect control panels 1345 // and applications not using global effects. 1346 if (sessionId != AUDIO_SESSION_OUTPUT_MIX) { 1347 setEffectSuspended_l(NULL, enabled, AUDIO_SESSION_OUTPUT_MIX); 1348 } 1349 } 1350 1351 sp<EffectChain> chain = getEffectChain_l(sessionId); 1352 if (chain != 0) { 1353 chain->checkSuspendOnEffectEnabled(effect, enabled); 1354 } 1355} 1356 1357// ---------------------------------------------------------------------------- 1358 1359AudioFlinger::PlaybackThread::PlaybackThread(const sp<AudioFlinger>& audioFlinger, 1360 AudioStreamOut* output, 1361 int id, 1362 uint32_t device) 1363 : ThreadBase(audioFlinger, id, device), 1364 mMixBuffer(0), mSuspended(0), mBytesWritten(0), mOutput(output), 1365 mLastWriteTime(0), mNumWrites(0), mNumDelayedWrites(0), mInWrite(false) 1366{ 1367 snprintf(mName, kNameLength, "AudioOut_%d", id); 1368 1369 readOutputParameters(); 1370 1371 mMasterVolume = mAudioFlinger->masterVolume(); 1372 mMasterMute = mAudioFlinger->masterMute(); 1373 1374 for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) { 1375 mStreamTypes[stream].volume = mAudioFlinger->streamVolumeInternal(stream); 1376 mStreamTypes[stream].mute = mAudioFlinger->streamMute(stream); 1377 mStreamTypes[stream].valid = true; 1378 } 1379} 1380 1381AudioFlinger::PlaybackThread::~PlaybackThread() 1382{ 1383 delete [] mMixBuffer; 1384} 1385 1386status_t AudioFlinger::PlaybackThread::dump(int fd, const Vector<String16>& args) 1387{ 1388 dumpInternals(fd, args); 1389 dumpTracks(fd, args); 1390 dumpEffectChains(fd, args); 1391 return NO_ERROR; 1392} 1393 1394status_t AudioFlinger::PlaybackThread::dumpTracks(int fd, const Vector<String16>& args) 1395{ 1396 const size_t SIZE = 256; 1397 char buffer[SIZE]; 1398 String8 result; 1399 1400 snprintf(buffer, SIZE, "Output thread %p tracks\n", this); 1401 result.append(buffer); 1402 result.append(" Name Clien Typ Fmt Chn mask Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 1403 for (size_t i = 0; i < mTracks.size(); ++i) { 1404 sp<Track> track = mTracks[i]; 1405 if (track != 0) { 1406 track->dump(buffer, SIZE); 1407 result.append(buffer); 1408 } 1409 } 1410 1411 snprintf(buffer, SIZE, "Output thread %p active tracks\n", this); 1412 result.append(buffer); 1413 result.append(" Name Clien Typ Fmt Chn mask Session Buf S M F SRate LeftV RighV Serv User Main buf Aux Buf\n"); 1414 for (size_t i = 0; i < mActiveTracks.size(); ++i) { 1415 wp<Track> wTrack = mActiveTracks[i]; 1416 if (wTrack != 0) { 1417 sp<Track> track = wTrack.promote(); 1418 if (track != 0) { 1419 track->dump(buffer, SIZE); 1420 result.append(buffer); 1421 } 1422 } 1423 } 1424 write(fd, result.string(), result.size()); 1425 return NO_ERROR; 1426} 1427 1428status_t AudioFlinger::PlaybackThread::dumpInternals(int fd, const Vector<String16>& args) 1429{ 1430 const size_t SIZE = 256; 1431 char buffer[SIZE]; 1432 String8 result; 1433 1434 snprintf(buffer, SIZE, "\nOutput thread %p internals\n", this); 1435 result.append(buffer); 1436 snprintf(buffer, SIZE, "last write occurred (msecs): %llu\n", ns2ms(systemTime() - mLastWriteTime)); 1437 result.append(buffer); 1438 snprintf(buffer, SIZE, "total writes: %d\n", mNumWrites); 1439 result.append(buffer); 1440 snprintf(buffer, SIZE, "delayed writes: %d\n", mNumDelayedWrites); 1441 result.append(buffer); 1442 snprintf(buffer, SIZE, "blocked in write: %d\n", mInWrite); 1443 result.append(buffer); 1444 snprintf(buffer, SIZE, "suspend count: %d\n", mSuspended); 1445 result.append(buffer); 1446 snprintf(buffer, SIZE, "mix buffer : %p\n", mMixBuffer); 1447 result.append(buffer); 1448 write(fd, result.string(), result.size()); 1449 1450 dumpBase(fd, args); 1451 1452 return NO_ERROR; 1453} 1454 1455// Thread virtuals 1456status_t AudioFlinger::PlaybackThread::readyToRun() 1457{ 1458 status_t status = initCheck(); 1459 if (status == NO_ERROR) { 1460 LOGI("AudioFlinger's thread %p ready to run", this); 1461 } else { 1462 LOGE("No working audio driver found."); 1463 } 1464 return status; 1465} 1466 1467void AudioFlinger::PlaybackThread::onFirstRef() 1468{ 1469 run(mName, ANDROID_PRIORITY_URGENT_AUDIO); 1470} 1471 1472// PlaybackThread::createTrack_l() must be called with AudioFlinger::mLock held 1473sp<AudioFlinger::PlaybackThread::Track> AudioFlinger::PlaybackThread::createTrack_l( 1474 const sp<AudioFlinger::Client>& client, 1475 int streamType, 1476 uint32_t sampleRate, 1477 uint32_t format, 1478 uint32_t channelMask, 1479 int frameCount, 1480 const sp<IMemory>& sharedBuffer, 1481 int sessionId, 1482 status_t *status) 1483{ 1484 sp<Track> track; 1485 status_t lStatus; 1486 1487 if (mType == DIRECT) { 1488 if ((format & AUDIO_FORMAT_MAIN_MASK) == AUDIO_FORMAT_PCM) { 1489 if (sampleRate != mSampleRate || format != mFormat || channelMask != mChannelMask) { 1490 LOGE("createTrack_l() Bad parameter: sampleRate %d format %d, channelMask 0x%08x \"" 1491 "for output %p with format %d", 1492 sampleRate, format, channelMask, mOutput, mFormat); 1493 lStatus = BAD_VALUE; 1494 goto Exit; 1495 } 1496 } 1497 } else { 1498 // Resampler implementation limits input sampling rate to 2 x output sampling rate. 1499 if (sampleRate > mSampleRate*2) { 1500 LOGE("Sample rate out of range: %d mSampleRate %d", sampleRate, mSampleRate); 1501 lStatus = BAD_VALUE; 1502 goto Exit; 1503 } 1504 } 1505 1506 lStatus = initCheck(); 1507 if (lStatus != NO_ERROR) { 1508 LOGE("Audio driver not initialized."); 1509 goto Exit; 1510 } 1511 1512 { // scope for mLock 1513 Mutex::Autolock _l(mLock); 1514 1515 // all tracks in same audio session must share the same routing strategy otherwise 1516 // conflicts will happen when tracks are moved from one output to another by audio policy 1517 // manager 1518 uint32_t strategy = 1519 AudioSystem::getStrategyForStream((audio_stream_type_t)streamType); 1520 for (size_t i = 0; i < mTracks.size(); ++i) { 1521 sp<Track> t = mTracks[i]; 1522 if (t != 0) { 1523 if (sessionId == t->sessionId() && 1524 strategy != AudioSystem::getStrategyForStream((audio_stream_type_t)t->type())) { 1525 lStatus = BAD_VALUE; 1526 goto Exit; 1527 } 1528 } 1529 } 1530 1531 track = new Track(this, client, streamType, sampleRate, format, 1532 channelMask, frameCount, sharedBuffer, sessionId); 1533 if (track->getCblk() == NULL || track->name() < 0) { 1534 lStatus = NO_MEMORY; 1535 goto Exit; 1536 } 1537 mTracks.add(track); 1538 1539 sp<EffectChain> chain = getEffectChain_l(sessionId); 1540 if (chain != 0) { 1541 ALOGV("createTrack_l() setting main buffer %p", chain->inBuffer()); 1542 track->setMainBuffer(chain->inBuffer()); 1543 chain->setStrategy(AudioSystem::getStrategyForStream((audio_stream_type_t)track->type())); 1544 chain->incTrackCnt(); 1545 } 1546 1547 // invalidate track immediately if the stream type was moved to another thread since 1548 // createTrack() was called by the client process. 1549 if (!mStreamTypes[streamType].valid) { 1550 LOGW("createTrack_l() on thread %p: invalidating track on stream %d", 1551 this, streamType); 1552 android_atomic_or(CBLK_INVALID_ON, &track->mCblk->flags); 1553 } 1554 } 1555 lStatus = NO_ERROR; 1556 1557Exit: 1558 if(status) { 1559 *status = lStatus; 1560 } 1561 return track; 1562} 1563 1564uint32_t AudioFlinger::PlaybackThread::latency() const 1565{ 1566 Mutex::Autolock _l(mLock); 1567 if (initCheck() == NO_ERROR) { 1568 return mOutput->stream->get_latency(mOutput->stream); 1569 } else { 1570 return 0; 1571 } 1572} 1573 1574status_t AudioFlinger::PlaybackThread::setMasterVolume(float value) 1575{ 1576 mMasterVolume = value; 1577 return NO_ERROR; 1578} 1579 1580status_t AudioFlinger::PlaybackThread::setMasterMute(bool muted) 1581{ 1582 mMasterMute = muted; 1583 return NO_ERROR; 1584} 1585 1586float AudioFlinger::PlaybackThread::masterVolume() const 1587{ 1588 return mMasterVolume; 1589} 1590 1591bool AudioFlinger::PlaybackThread::masterMute() const 1592{ 1593 return mMasterMute; 1594} 1595 1596status_t AudioFlinger::PlaybackThread::setStreamVolume(int stream, float value) 1597{ 1598 mStreamTypes[stream].volume = value; 1599 return NO_ERROR; 1600} 1601 1602status_t AudioFlinger::PlaybackThread::setStreamMute(int stream, bool muted) 1603{ 1604 mStreamTypes[stream].mute = muted; 1605 return NO_ERROR; 1606} 1607 1608float AudioFlinger::PlaybackThread::streamVolume(int stream) const 1609{ 1610 return mStreamTypes[stream].volume; 1611} 1612 1613bool AudioFlinger::PlaybackThread::streamMute(int stream) const 1614{ 1615 return mStreamTypes[stream].mute; 1616} 1617 1618// addTrack_l() must be called with ThreadBase::mLock held 1619status_t AudioFlinger::PlaybackThread::addTrack_l(const sp<Track>& track) 1620{ 1621 status_t status = ALREADY_EXISTS; 1622 1623 // set retry count for buffer fill 1624 track->mRetryCount = kMaxTrackStartupRetries; 1625 if (mActiveTracks.indexOf(track) < 0) { 1626 // the track is newly added, make sure it fills up all its 1627 // buffers before playing. This is to ensure the client will 1628 // effectively get the latency it requested. 1629 track->mFillingUpStatus = Track::FS_FILLING; 1630 track->mResetDone = false; 1631 mActiveTracks.add(track); 1632 if (track->mainBuffer() != mMixBuffer) { 1633 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1634 if (chain != 0) { 1635 ALOGV("addTrack_l() starting track on chain %p for session %d", chain.get(), track->sessionId()); 1636 chain->incActiveTrackCnt(); 1637 } 1638 } 1639 1640 status = NO_ERROR; 1641 } 1642 1643 ALOGV("mWaitWorkCV.broadcast"); 1644 mWaitWorkCV.broadcast(); 1645 1646 return status; 1647} 1648 1649// destroyTrack_l() must be called with ThreadBase::mLock held 1650void AudioFlinger::PlaybackThread::destroyTrack_l(const sp<Track>& track) 1651{ 1652 track->mState = TrackBase::TERMINATED; 1653 if (mActiveTracks.indexOf(track) < 0) { 1654 removeTrack_l(track); 1655 } 1656} 1657 1658void AudioFlinger::PlaybackThread::removeTrack_l(const sp<Track>& track) 1659{ 1660 mTracks.remove(track); 1661 deleteTrackName_l(track->name()); 1662 sp<EffectChain> chain = getEffectChain_l(track->sessionId()); 1663 if (chain != 0) { 1664 chain->decTrackCnt(); 1665 } 1666} 1667 1668String8 AudioFlinger::PlaybackThread::getParameters(const String8& keys) 1669{ 1670 String8 out_s8 = String8(""); 1671 char *s; 1672 1673 Mutex::Autolock _l(mLock); 1674 if (initCheck() != NO_ERROR) { 1675 return out_s8; 1676 } 1677 1678 s = mOutput->stream->common.get_parameters(&mOutput->stream->common, keys.string()); 1679 out_s8 = String8(s); 1680 free(s); 1681 return out_s8; 1682} 1683 1684// audioConfigChanged_l() must be called with AudioFlinger::mLock held 1685void AudioFlinger::PlaybackThread::audioConfigChanged_l(int event, int param) { 1686 AudioSystem::OutputDescriptor desc; 1687 void *param2 = 0; 1688 1689 ALOGV("PlaybackThread::audioConfigChanged_l, thread %p, event %d, param %d", this, event, param); 1690 1691 switch (event) { 1692 case AudioSystem::OUTPUT_OPENED: 1693 case AudioSystem::OUTPUT_CONFIG_CHANGED: 1694 desc.channels = mChannelMask; 1695 desc.samplingRate = mSampleRate; 1696 desc.format = mFormat; 1697 desc.frameCount = mFrameCount; 1698 desc.latency = latency(); 1699 param2 = &desc; 1700 break; 1701 1702 case AudioSystem::STREAM_CONFIG_CHANGED: 1703 param2 = ¶m; 1704 case AudioSystem::OUTPUT_CLOSED: 1705 default: 1706 break; 1707 } 1708 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 1709} 1710 1711void AudioFlinger::PlaybackThread::readOutputParameters() 1712{ 1713 mSampleRate = mOutput->stream->common.get_sample_rate(&mOutput->stream->common); 1714 mChannelMask = mOutput->stream->common.get_channels(&mOutput->stream->common); 1715 mChannelCount = (uint16_t)popcount(mChannelMask); 1716 mFormat = mOutput->stream->common.get_format(&mOutput->stream->common); 1717 mFrameSize = (uint16_t)audio_stream_frame_size(&mOutput->stream->common); 1718 mFrameCount = mOutput->stream->common.get_buffer_size(&mOutput->stream->common) / mFrameSize; 1719 1720 // FIXME - Current mixer implementation only supports stereo output: Always 1721 // Allocate a stereo buffer even if HW output is mono. 1722 if (mMixBuffer != NULL) delete[] mMixBuffer; 1723 mMixBuffer = new int16_t[mFrameCount * 2]; 1724 memset(mMixBuffer, 0, mFrameCount * 2 * sizeof(int16_t)); 1725 1726 // force reconfiguration of effect chains and engines to take new buffer size and audio 1727 // parameters into account 1728 // Note that mLock is not held when readOutputParameters() is called from the constructor 1729 // but in this case nothing is done below as no audio sessions have effect yet so it doesn't 1730 // matter. 1731 // create a copy of mEffectChains as calling moveEffectChain_l() can reorder some effect chains 1732 Vector< sp<EffectChain> > effectChains = mEffectChains; 1733 for (size_t i = 0; i < effectChains.size(); i ++) { 1734 mAudioFlinger->moveEffectChain_l(effectChains[i]->sessionId(), this, this, false); 1735 } 1736} 1737 1738status_t AudioFlinger::PlaybackThread::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames) 1739{ 1740 if (halFrames == 0 || dspFrames == 0) { 1741 return BAD_VALUE; 1742 } 1743 Mutex::Autolock _l(mLock); 1744 if (initCheck() != NO_ERROR) { 1745 return INVALID_OPERATION; 1746 } 1747 *halFrames = mBytesWritten / audio_stream_frame_size(&mOutput->stream->common); 1748 1749 return mOutput->stream->get_render_position(mOutput->stream, dspFrames); 1750} 1751 1752uint32_t AudioFlinger::PlaybackThread::hasAudioSession(int sessionId) 1753{ 1754 Mutex::Autolock _l(mLock); 1755 uint32_t result = 0; 1756 if (getEffectChain_l(sessionId) != 0) { 1757 result = EFFECT_SESSION; 1758 } 1759 1760 for (size_t i = 0; i < mTracks.size(); ++i) { 1761 sp<Track> track = mTracks[i]; 1762 if (sessionId == track->sessionId() && 1763 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1764 result |= TRACK_SESSION; 1765 break; 1766 } 1767 } 1768 1769 return result; 1770} 1771 1772uint32_t AudioFlinger::PlaybackThread::getStrategyForSession_l(int sessionId) 1773{ 1774 // session AUDIO_SESSION_OUTPUT_MIX is placed in same strategy as MUSIC stream so that 1775 // it is moved to correct output by audio policy manager when A2DP is connected or disconnected 1776 if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 1777 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1778 } 1779 for (size_t i = 0; i < mTracks.size(); i++) { 1780 sp<Track> track = mTracks[i]; 1781 if (sessionId == track->sessionId() && 1782 !(track->mCblk->flags & CBLK_INVALID_MSK)) { 1783 return AudioSystem::getStrategyForStream((audio_stream_type_t) track->type()); 1784 } 1785 } 1786 return AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 1787} 1788 1789 1790AudioFlinger::AudioStreamOut* AudioFlinger::PlaybackThread::getOutput() 1791{ 1792 Mutex::Autolock _l(mLock); 1793 return mOutput; 1794} 1795 1796AudioFlinger::AudioStreamOut* AudioFlinger::PlaybackThread::clearOutput() 1797{ 1798 Mutex::Autolock _l(mLock); 1799 AudioStreamOut *output = mOutput; 1800 mOutput = NULL; 1801 return output; 1802} 1803 1804// this method must always be called either with ThreadBase mLock held or inside the thread loop 1805audio_stream_t* AudioFlinger::PlaybackThread::stream() 1806{ 1807 if (mOutput == NULL) { 1808 return NULL; 1809 } 1810 return &mOutput->stream->common; 1811} 1812 1813// ---------------------------------------------------------------------------- 1814 1815AudioFlinger::MixerThread::MixerThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 1816 : PlaybackThread(audioFlinger, output, id, device), 1817 mAudioMixer(0) 1818{ 1819 mType = ThreadBase::MIXER; 1820 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 1821 1822 // FIXME - Current mixer implementation only supports stereo output 1823 if (mChannelCount == 1) { 1824 LOGE("Invalid audio hardware channel count"); 1825 } 1826} 1827 1828AudioFlinger::MixerThread::~MixerThread() 1829{ 1830 delete mAudioMixer; 1831} 1832 1833bool AudioFlinger::MixerThread::threadLoop() 1834{ 1835 Vector< sp<Track> > tracksToRemove; 1836 uint32_t mixerStatus = MIXER_IDLE; 1837 nsecs_t standbyTime = systemTime(); 1838 size_t mixBufferSize = mFrameCount * mFrameSize; 1839 // FIXME: Relaxed timing because of a certain device that can't meet latency 1840 // Should be reduced to 2x after the vendor fixes the driver issue 1841 // increase threshold again due to low power audio mode. The way this warning threshold is 1842 // calculated and its usefulness should be reconsidered anyway. 1843 nsecs_t maxPeriod = seconds(mFrameCount) / mSampleRate * 15; 1844 nsecs_t lastWarning = 0; 1845 bool longStandbyExit = false; 1846 uint32_t activeSleepTime = activeSleepTimeUs(); 1847 uint32_t idleSleepTime = idleSleepTimeUs(); 1848 uint32_t sleepTime = idleSleepTime; 1849 Vector< sp<EffectChain> > effectChains; 1850#ifdef DEBUG_CPU_USAGE 1851 ThreadCpuUsage cpu; 1852 const CentralTendencyStatistics& stats = cpu.statistics(); 1853#endif 1854 1855 acquireWakeLock(); 1856 1857 while (!exitPending()) 1858 { 1859#ifdef DEBUG_CPU_USAGE 1860 cpu.sampleAndEnable(); 1861 unsigned n = stats.n(); 1862 // cpu.elapsed() is expensive, so don't call it every loop 1863 if ((n & 127) == 1) { 1864 long long elapsed = cpu.elapsed(); 1865 if (elapsed >= DEBUG_CPU_USAGE * 1000000000LL) { 1866 double perLoop = elapsed / (double) n; 1867 double perLoop100 = perLoop * 0.01; 1868 double mean = stats.mean(); 1869 double stddev = stats.stddev(); 1870 double minimum = stats.minimum(); 1871 double maximum = stats.maximum(); 1872 cpu.resetStatistics(); 1873 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", 1874 elapsed * .000000001, n, perLoop * .000001, 1875 mean * .001, 1876 stddev * .001, 1877 minimum * .001, 1878 maximum * .001, 1879 mean / perLoop100, 1880 stddev / perLoop100, 1881 minimum / perLoop100, 1882 maximum / perLoop100); 1883 } 1884 } 1885#endif 1886 processConfigEvents(); 1887 1888 mixerStatus = MIXER_IDLE; 1889 { // scope for mLock 1890 1891 Mutex::Autolock _l(mLock); 1892 1893 if (checkForNewParameters_l()) { 1894 mixBufferSize = mFrameCount * mFrameSize; 1895 // FIXME: Relaxed timing because of a certain device that can't meet latency 1896 // Should be reduced to 2x after the vendor fixes the driver issue 1897 // increase threshold again due to low power audio mode. The way this warning 1898 // threshold is calculated and its usefulness should be reconsidered anyway. 1899 maxPeriod = seconds(mFrameCount) / mSampleRate * 15; 1900 activeSleepTime = activeSleepTimeUs(); 1901 idleSleepTime = idleSleepTimeUs(); 1902 } 1903 1904 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 1905 1906 // put audio hardware into standby after short delay 1907 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 1908 mSuspended) { 1909 if (!mStandby) { 1910 ALOGV("Audio hardware entering standby, mixer %p, mSuspended %d\n", this, mSuspended); 1911 mOutput->stream->common.standby(&mOutput->stream->common); 1912 mStandby = true; 1913 mBytesWritten = 0; 1914 } 1915 1916 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 1917 // we're about to wait, flush the binder command buffer 1918 IPCThreadState::self()->flushCommands(); 1919 1920 if (exitPending()) break; 1921 1922 releaseWakeLock_l(); 1923 // wait until we have something to do... 1924 ALOGV("MixerThread %p TID %d going to sleep\n", this, gettid()); 1925 mWaitWorkCV.wait(mLock); 1926 ALOGV("MixerThread %p TID %d waking up\n", this, gettid()); 1927 acquireWakeLock_l(); 1928 1929 if (mMasterMute == false) { 1930 char value[PROPERTY_VALUE_MAX]; 1931 property_get("ro.audio.silent", value, "0"); 1932 if (atoi(value)) { 1933 LOGD("Silence is golden"); 1934 setMasterMute(true); 1935 } 1936 } 1937 1938 standbyTime = systemTime() + kStandbyTimeInNsecs; 1939 sleepTime = idleSleepTime; 1940 continue; 1941 } 1942 } 1943 1944 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 1945 1946 // prevent any changes in effect chain list and in each effect chain 1947 // during mixing and effect process as the audio buffers could be deleted 1948 // or modified if an effect is created or deleted 1949 lockEffectChains_l(effectChains); 1950 } 1951 1952 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 1953 // mix buffers... 1954 mAudioMixer->process(); 1955 sleepTime = 0; 1956 standbyTime = systemTime() + kStandbyTimeInNsecs; 1957 //TODO: delay standby when effects have a tail 1958 } else { 1959 // If no tracks are ready, sleep once for the duration of an output 1960 // buffer size, then write 0s to the output 1961 if (sleepTime == 0) { 1962 if (mixerStatus == MIXER_TRACKS_ENABLED) { 1963 sleepTime = activeSleepTime; 1964 } else { 1965 sleepTime = idleSleepTime; 1966 } 1967 } else if (mBytesWritten != 0 || 1968 (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)) { 1969 memset (mMixBuffer, 0, mixBufferSize); 1970 sleepTime = 0; 1971 ALOGV_IF((mBytesWritten == 0 && (mixerStatus == MIXER_TRACKS_ENABLED && longStandbyExit)), "anticipated start"); 1972 } 1973 // TODO add standby time extension fct of effect tail 1974 } 1975 1976 if (mSuspended) { 1977 sleepTime = suspendSleepTimeUs(); 1978 } 1979 // sleepTime == 0 means we must write to audio hardware 1980 if (sleepTime == 0) { 1981 for (size_t i = 0; i < effectChains.size(); i ++) { 1982 effectChains[i]->process_l(); 1983 } 1984 // enable changes in effect chain 1985 unlockEffectChains(effectChains); 1986 mLastWriteTime = systemTime(); 1987 mInWrite = true; 1988 mBytesWritten += mixBufferSize; 1989 1990 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 1991 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 1992 mNumWrites++; 1993 mInWrite = false; 1994 nsecs_t now = systemTime(); 1995 nsecs_t delta = now - mLastWriteTime; 1996 if (!mStandby && delta > maxPeriod) { 1997 mNumDelayedWrites++; 1998 if ((now - lastWarning) > kWarningThrottle) { 1999 LOGW("write blocked for %llu msecs, %d delayed writes, thread %p", 2000 ns2ms(delta), mNumDelayedWrites, this); 2001 lastWarning = now; 2002 } 2003 if (mStandby) { 2004 longStandbyExit = true; 2005 } 2006 } 2007 mStandby = false; 2008 } else { 2009 // enable changes in effect chain 2010 unlockEffectChains(effectChains); 2011 usleep(sleepTime); 2012 } 2013 2014 // finally let go of all our tracks, without the lock held 2015 // since we can't guarantee the destructors won't acquire that 2016 // same lock. 2017 tracksToRemove.clear(); 2018 2019 // Effect chains will be actually deleted here if they were removed from 2020 // mEffectChains list during mixing or effects processing 2021 effectChains.clear(); 2022 } 2023 2024 if (!mStandby) { 2025 mOutput->stream->common.standby(&mOutput->stream->common); 2026 } 2027 2028 releaseWakeLock(); 2029 2030 ALOGV("MixerThread %p exiting", this); 2031 return false; 2032} 2033 2034// prepareTracks_l() must be called with ThreadBase::mLock held 2035uint32_t AudioFlinger::MixerThread::prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, Vector< sp<Track> > *tracksToRemove) 2036{ 2037 2038 uint32_t mixerStatus = MIXER_IDLE; 2039 // find out which tracks need to be processed 2040 size_t count = activeTracks.size(); 2041 size_t mixedTracks = 0; 2042 size_t tracksWithEffect = 0; 2043 2044 float masterVolume = mMasterVolume; 2045 bool masterMute = mMasterMute; 2046 2047 if (masterMute) { 2048 masterVolume = 0; 2049 } 2050 // Delegate master volume control to effect in output mix effect chain if needed 2051 sp<EffectChain> chain = getEffectChain_l(AUDIO_SESSION_OUTPUT_MIX); 2052 if (chain != 0) { 2053 uint32_t v = (uint32_t)(masterVolume * (1 << 24)); 2054 chain->setVolume_l(&v, &v); 2055 masterVolume = (float)((v + (1 << 23)) >> 24); 2056 chain.clear(); 2057 } 2058 2059 for (size_t i=0 ; i<count ; i++) { 2060 sp<Track> t = activeTracks[i].promote(); 2061 if (t == 0) continue; 2062 2063 Track* const track = t.get(); 2064 audio_track_cblk_t* cblk = track->cblk(); 2065 2066 // The first time a track is added we wait 2067 // for all its buffers to be filled before processing it 2068 mAudioMixer->setActiveTrack(track->name()); 2069 // make sure that we have enough frames to mix one full buffer. 2070 // enforce this condition only once to enable draining the buffer in case the client 2071 // app does not call stop() and relies on underrun to stop: 2072 // hence the test on (track->mRetryCount >= kMaxTrackRetries) meaning the track was mixed 2073 // during last round 2074 uint32_t minFrames = 1; 2075 if (!track->isStopped() && !track->isPausing() && 2076 (track->mRetryCount >= kMaxTrackRetries)) { 2077 if (t->sampleRate() == (int)mSampleRate) { 2078 minFrames = mFrameCount; 2079 } else { 2080 minFrames = (mFrameCount * t->sampleRate()) / mSampleRate + 1; 2081 } 2082 } 2083 if ((cblk->framesReady() >= minFrames) && track->isReady() && 2084 !track->isPaused() && !track->isTerminated()) 2085 { 2086 //ALOGV("track %d u=%08x, s=%08x [OK] on thread %p", track->name(), cblk->user, cblk->server, this); 2087 2088 mixedTracks++; 2089 2090 // track->mainBuffer() != mMixBuffer means there is an effect chain 2091 // connected to the track 2092 chain.clear(); 2093 if (track->mainBuffer() != mMixBuffer) { 2094 chain = getEffectChain_l(track->sessionId()); 2095 // Delegate volume control to effect in track effect chain if needed 2096 if (chain != 0) { 2097 tracksWithEffect++; 2098 } else { 2099 LOGW("prepareTracks_l(): track %08x attached to effect but no chain found on session %d", 2100 track->name(), track->sessionId()); 2101 } 2102 } 2103 2104 2105 int param = AudioMixer::VOLUME; 2106 if (track->mFillingUpStatus == Track::FS_FILLED) { 2107 // no ramp for the first volume setting 2108 track->mFillingUpStatus = Track::FS_ACTIVE; 2109 if (track->mState == TrackBase::RESUMING) { 2110 track->mState = TrackBase::ACTIVE; 2111 param = AudioMixer::RAMP_VOLUME; 2112 } 2113 mAudioMixer->setParameter(AudioMixer::RESAMPLE, AudioMixer::RESET, NULL); 2114 } else if (cblk->server != 0) { 2115 // If the track is stopped before the first frame was mixed, 2116 // do not apply ramp 2117 param = AudioMixer::RAMP_VOLUME; 2118 } 2119 2120 // compute volume for this track 2121 uint32_t vl, vr, va; 2122 if (track->isMuted() || track->isPausing() || 2123 mStreamTypes[track->type()].mute) { 2124 vl = vr = va = 0; 2125 if (track->isPausing()) { 2126 track->setPaused(); 2127 } 2128 } else { 2129 2130 // read original volumes with volume control 2131 float typeVolume = mStreamTypes[track->type()].volume; 2132 float v = masterVolume * typeVolume; 2133 vl = (uint32_t)(v * cblk->volume[0]) << 12; 2134 vr = (uint32_t)(v * cblk->volume[1]) << 12; 2135 2136 va = (uint32_t)(v * cblk->sendLevel); 2137 } 2138 // Delegate volume control to effect in track effect chain if needed 2139 if (chain != 0 && chain->setVolume_l(&vl, &vr)) { 2140 // Do not ramp volume if volume is controlled by effect 2141 param = AudioMixer::VOLUME; 2142 track->mHasVolumeController = true; 2143 } else { 2144 // force no volume ramp when volume controller was just disabled or removed 2145 // from effect chain to avoid volume spike 2146 if (track->mHasVolumeController) { 2147 param = AudioMixer::VOLUME; 2148 } 2149 track->mHasVolumeController = false; 2150 } 2151 2152 // Convert volumes from 8.24 to 4.12 format 2153 int16_t left, right, aux; 2154 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 2155 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2156 left = int16_t(v_clamped); 2157 v_clamped = (vr + (1 << 11)) >> 12; 2158 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2159 right = int16_t(v_clamped); 2160 2161 if (va > MAX_GAIN_INT) va = MAX_GAIN_INT; 2162 aux = int16_t(va); 2163 2164 // XXX: these things DON'T need to be done each time 2165 mAudioMixer->setBufferProvider(track); 2166 mAudioMixer->enable(AudioMixer::MIXING); 2167 2168 mAudioMixer->setParameter(param, AudioMixer::VOLUME0, (void *)left); 2169 mAudioMixer->setParameter(param, AudioMixer::VOLUME1, (void *)right); 2170 mAudioMixer->setParameter(param, AudioMixer::AUXLEVEL, (void *)aux); 2171 mAudioMixer->setParameter( 2172 AudioMixer::TRACK, 2173 AudioMixer::FORMAT, (void *)track->format()); 2174 mAudioMixer->setParameter( 2175 AudioMixer::TRACK, 2176 AudioMixer::CHANNEL_MASK, (void *)track->channelMask()); 2177 mAudioMixer->setParameter( 2178 AudioMixer::RESAMPLE, 2179 AudioMixer::SAMPLE_RATE, 2180 (void *)(cblk->sampleRate)); 2181 mAudioMixer->setParameter( 2182 AudioMixer::TRACK, 2183 AudioMixer::MAIN_BUFFER, (void *)track->mainBuffer()); 2184 mAudioMixer->setParameter( 2185 AudioMixer::TRACK, 2186 AudioMixer::AUX_BUFFER, (void *)track->auxBuffer()); 2187 2188 // reset retry count 2189 track->mRetryCount = kMaxTrackRetries; 2190 mixerStatus = MIXER_TRACKS_READY; 2191 } else { 2192 //ALOGV("track %d u=%08x, s=%08x [NOT READY] on thread %p", track->name(), cblk->user, cblk->server, this); 2193 if (track->isStopped()) { 2194 track->reset(); 2195 } 2196 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 2197 // We have consumed all the buffers of this track. 2198 // Remove it from the list of active tracks. 2199 tracksToRemove->add(track); 2200 } else { 2201 // No buffers for this track. Give it a few chances to 2202 // fill a buffer, then remove it from active list. 2203 if (--(track->mRetryCount) <= 0) { 2204 ALOGV("BUFFER TIMEOUT: remove(%d) from active list on thread %p", track->name(), this); 2205 tracksToRemove->add(track); 2206 // indicate to client process that the track was disabled because of underrun 2207 android_atomic_or(CBLK_DISABLED_ON, &cblk->flags); 2208 } else if (mixerStatus != MIXER_TRACKS_READY) { 2209 mixerStatus = MIXER_TRACKS_ENABLED; 2210 } 2211 } 2212 mAudioMixer->disable(AudioMixer::MIXING); 2213 } 2214 } 2215 2216 // remove all the tracks that need to be... 2217 count = tracksToRemove->size(); 2218 if (UNLIKELY(count)) { 2219 for (size_t i=0 ; i<count ; i++) { 2220 const sp<Track>& track = tracksToRemove->itemAt(i); 2221 mActiveTracks.remove(track); 2222 if (track->mainBuffer() != mMixBuffer) { 2223 chain = getEffectChain_l(track->sessionId()); 2224 if (chain != 0) { 2225 ALOGV("stopping track on chain %p for session Id: %d", chain.get(), track->sessionId()); 2226 chain->decActiveTrackCnt(); 2227 } 2228 } 2229 if (track->isTerminated()) { 2230 removeTrack_l(track); 2231 } 2232 } 2233 } 2234 2235 // mix buffer must be cleared if all tracks are connected to an 2236 // effect chain as in this case the mixer will not write to 2237 // mix buffer and track effects will accumulate into it 2238 if (mixedTracks != 0 && mixedTracks == tracksWithEffect) { 2239 memset(mMixBuffer, 0, mFrameCount * mChannelCount * sizeof(int16_t)); 2240 } 2241 2242 return mixerStatus; 2243} 2244 2245void AudioFlinger::MixerThread::invalidateTracks(int streamType) 2246{ 2247 ALOGV ("MixerThread::invalidateTracks() mixer %p, streamType %d, mTracks.size %d", 2248 this, streamType, mTracks.size()); 2249 Mutex::Autolock _l(mLock); 2250 2251 size_t size = mTracks.size(); 2252 for (size_t i = 0; i < size; i++) { 2253 sp<Track> t = mTracks[i]; 2254 if (t->type() == streamType) { 2255 android_atomic_or(CBLK_INVALID_ON, &t->mCblk->flags); 2256 t->mCblk->cv.signal(); 2257 } 2258 } 2259} 2260 2261void AudioFlinger::PlaybackThread::setStreamValid(int streamType, bool valid) 2262{ 2263 ALOGV ("PlaybackThread::setStreamValid() thread %p, streamType %d, valid %d", 2264 this, streamType, valid); 2265 Mutex::Autolock _l(mLock); 2266 2267 mStreamTypes[streamType].valid = valid; 2268} 2269 2270// getTrackName_l() must be called with ThreadBase::mLock held 2271int AudioFlinger::MixerThread::getTrackName_l() 2272{ 2273 return mAudioMixer->getTrackName(); 2274} 2275 2276// deleteTrackName_l() must be called with ThreadBase::mLock held 2277void AudioFlinger::MixerThread::deleteTrackName_l(int name) 2278{ 2279 ALOGV("remove track (%d) and delete from mixer", name); 2280 mAudioMixer->deleteTrackName(name); 2281} 2282 2283// checkForNewParameters_l() must be called with ThreadBase::mLock held 2284bool AudioFlinger::MixerThread::checkForNewParameters_l() 2285{ 2286 bool reconfig = false; 2287 2288 while (!mNewParameters.isEmpty()) { 2289 status_t status = NO_ERROR; 2290 String8 keyValuePair = mNewParameters[0]; 2291 AudioParameter param = AudioParameter(keyValuePair); 2292 int value; 2293 2294 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 2295 reconfig = true; 2296 } 2297 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 2298 if (value != AUDIO_FORMAT_PCM_16_BIT) { 2299 status = BAD_VALUE; 2300 } else { 2301 reconfig = true; 2302 } 2303 } 2304 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 2305 if (value != AUDIO_CHANNEL_OUT_STEREO) { 2306 status = BAD_VALUE; 2307 } else { 2308 reconfig = true; 2309 } 2310 } 2311 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 2312 // do not accept frame count changes if tracks are open as the track buffer 2313 // size depends on frame count and correct behavior would not be garantied 2314 // if frame count is changed after track creation 2315 if (!mTracks.isEmpty()) { 2316 status = INVALID_OPERATION; 2317 } else { 2318 reconfig = true; 2319 } 2320 } 2321 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 2322 // when changing the audio output device, call addBatteryData to notify 2323 // the change 2324 if ((int)mDevice != value) { 2325 uint32_t params = 0; 2326 // check whether speaker is on 2327 if (value & AUDIO_DEVICE_OUT_SPEAKER) { 2328 params |= IMediaPlayerService::kBatteryDataSpeakerOn; 2329 } 2330 2331 int deviceWithoutSpeaker 2332 = AUDIO_DEVICE_OUT_ALL & ~AUDIO_DEVICE_OUT_SPEAKER; 2333 // check if any other device (except speaker) is on 2334 if (value & deviceWithoutSpeaker ) { 2335 params |= IMediaPlayerService::kBatteryDataOtherAudioDeviceOn; 2336 } 2337 2338 if (params != 0) { 2339 addBatteryData(params); 2340 } 2341 } 2342 2343 // forward device change to effects that have requested to be 2344 // aware of attached audio device. 2345 mDevice = (uint32_t)value; 2346 for (size_t i = 0; i < mEffectChains.size(); i++) { 2347 mEffectChains[i]->setDevice_l(mDevice); 2348 } 2349 } 2350 2351 if (status == NO_ERROR) { 2352 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2353 keyValuePair.string()); 2354 if (!mStandby && status == INVALID_OPERATION) { 2355 mOutput->stream->common.standby(&mOutput->stream->common); 2356 mStandby = true; 2357 mBytesWritten = 0; 2358 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2359 keyValuePair.string()); 2360 } 2361 if (status == NO_ERROR && reconfig) { 2362 delete mAudioMixer; 2363 readOutputParameters(); 2364 mAudioMixer = new AudioMixer(mFrameCount, mSampleRate); 2365 for (size_t i = 0; i < mTracks.size() ; i++) { 2366 int name = getTrackName_l(); 2367 if (name < 0) break; 2368 mTracks[i]->mName = name; 2369 // limit track sample rate to 2 x new output sample rate 2370 if (mTracks[i]->mCblk->sampleRate > 2 * sampleRate()) { 2371 mTracks[i]->mCblk->sampleRate = 2 * sampleRate(); 2372 } 2373 } 2374 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2375 } 2376 } 2377 2378 mNewParameters.removeAt(0); 2379 2380 mParamStatus = status; 2381 mParamCond.signal(); 2382 // wait for condition with time out in case the thread calling ThreadBase::setParameters() 2383 // already timed out waiting for the status and will never signal the condition. 2384 mWaitWorkCV.waitRelative(mLock, kSetParametersTimeout); 2385 } 2386 return reconfig; 2387} 2388 2389status_t AudioFlinger::MixerThread::dumpInternals(int fd, const Vector<String16>& args) 2390{ 2391 const size_t SIZE = 256; 2392 char buffer[SIZE]; 2393 String8 result; 2394 2395 PlaybackThread::dumpInternals(fd, args); 2396 2397 snprintf(buffer, SIZE, "AudioMixer tracks: %08x\n", mAudioMixer->trackNames()); 2398 result.append(buffer); 2399 write(fd, result.string(), result.size()); 2400 return NO_ERROR; 2401} 2402 2403uint32_t AudioFlinger::MixerThread::activeSleepTimeUs() 2404{ 2405 return (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2406} 2407 2408uint32_t AudioFlinger::MixerThread::idleSleepTimeUs() 2409{ 2410 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2411} 2412 2413uint32_t AudioFlinger::MixerThread::suspendSleepTimeUs() 2414{ 2415 return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2416} 2417 2418// ---------------------------------------------------------------------------- 2419AudioFlinger::DirectOutputThread::DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) 2420 : PlaybackThread(audioFlinger, output, id, device) 2421{ 2422 mType = ThreadBase::DIRECT; 2423} 2424 2425AudioFlinger::DirectOutputThread::~DirectOutputThread() 2426{ 2427} 2428 2429 2430static inline int16_t clamp16(int32_t sample) 2431{ 2432 if ((sample>>15) ^ (sample>>31)) 2433 sample = 0x7FFF ^ (sample>>31); 2434 return sample; 2435} 2436 2437static inline 2438int32_t mul(int16_t in, int16_t v) 2439{ 2440#if defined(__arm__) && !defined(__thumb__) 2441 int32_t out; 2442 asm( "smulbb %[out], %[in], %[v] \n" 2443 : [out]"=r"(out) 2444 : [in]"%r"(in), [v]"r"(v) 2445 : ); 2446 return out; 2447#else 2448 return in * int32_t(v); 2449#endif 2450} 2451 2452void AudioFlinger::DirectOutputThread::applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp) 2453{ 2454 // Do not apply volume on compressed audio 2455 if (!audio_is_linear_pcm(mFormat)) { 2456 return; 2457 } 2458 2459 // convert to signed 16 bit before volume calculation 2460 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2461 size_t count = mFrameCount * mChannelCount; 2462 uint8_t *src = (uint8_t *)mMixBuffer + count-1; 2463 int16_t *dst = mMixBuffer + count-1; 2464 while(count--) { 2465 *dst-- = (int16_t)(*src--^0x80) << 8; 2466 } 2467 } 2468 2469 size_t frameCount = mFrameCount; 2470 int16_t *out = mMixBuffer; 2471 if (ramp) { 2472 if (mChannelCount == 1) { 2473 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2474 int32_t vlInc = d / (int32_t)frameCount; 2475 int32_t vl = ((int32_t)mLeftVolShort << 16); 2476 do { 2477 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2478 out++; 2479 vl += vlInc; 2480 } while (--frameCount); 2481 2482 } else { 2483 int32_t d = ((int32_t)leftVol - (int32_t)mLeftVolShort) << 16; 2484 int32_t vlInc = d / (int32_t)frameCount; 2485 d = ((int32_t)rightVol - (int32_t)mRightVolShort) << 16; 2486 int32_t vrInc = d / (int32_t)frameCount; 2487 int32_t vl = ((int32_t)mLeftVolShort << 16); 2488 int32_t vr = ((int32_t)mRightVolShort << 16); 2489 do { 2490 out[0] = clamp16(mul(out[0], vl >> 16) >> 12); 2491 out[1] = clamp16(mul(out[1], vr >> 16) >> 12); 2492 out += 2; 2493 vl += vlInc; 2494 vr += vrInc; 2495 } while (--frameCount); 2496 } 2497 } else { 2498 if (mChannelCount == 1) { 2499 do { 2500 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2501 out++; 2502 } while (--frameCount); 2503 } else { 2504 do { 2505 out[0] = clamp16(mul(out[0], leftVol) >> 12); 2506 out[1] = clamp16(mul(out[1], rightVol) >> 12); 2507 out += 2; 2508 } while (--frameCount); 2509 } 2510 } 2511 2512 // convert back to unsigned 8 bit after volume calculation 2513 if (mFormat == AUDIO_FORMAT_PCM_8_BIT) { 2514 size_t count = mFrameCount * mChannelCount; 2515 int16_t *src = mMixBuffer; 2516 uint8_t *dst = (uint8_t *)mMixBuffer; 2517 while(count--) { 2518 *dst++ = (uint8_t)(((int32_t)*src++ + (1<<7)) >> 8)^0x80; 2519 } 2520 } 2521 2522 mLeftVolShort = leftVol; 2523 mRightVolShort = rightVol; 2524} 2525 2526bool AudioFlinger::DirectOutputThread::threadLoop() 2527{ 2528 uint32_t mixerStatus = MIXER_IDLE; 2529 sp<Track> trackToRemove; 2530 sp<Track> activeTrack; 2531 nsecs_t standbyTime = systemTime(); 2532 int8_t *curBuf; 2533 size_t mixBufferSize = mFrameCount*mFrameSize; 2534 uint32_t activeSleepTime = activeSleepTimeUs(); 2535 uint32_t idleSleepTime = idleSleepTimeUs(); 2536 uint32_t sleepTime = idleSleepTime; 2537 // use shorter standby delay as on normal output to release 2538 // hardware resources as soon as possible 2539 nsecs_t standbyDelay = microseconds(activeSleepTime*2); 2540 2541 acquireWakeLock(); 2542 2543 while (!exitPending()) 2544 { 2545 bool rampVolume; 2546 uint16_t leftVol; 2547 uint16_t rightVol; 2548 Vector< sp<EffectChain> > effectChains; 2549 2550 processConfigEvents(); 2551 2552 mixerStatus = MIXER_IDLE; 2553 2554 { // scope for the mLock 2555 2556 Mutex::Autolock _l(mLock); 2557 2558 if (checkForNewParameters_l()) { 2559 mixBufferSize = mFrameCount*mFrameSize; 2560 activeSleepTime = activeSleepTimeUs(); 2561 idleSleepTime = idleSleepTimeUs(); 2562 standbyDelay = microseconds(activeSleepTime*2); 2563 } 2564 2565 // put audio hardware into standby after short delay 2566 if UNLIKELY((!mActiveTracks.size() && systemTime() > standbyTime) || 2567 mSuspended) { 2568 // wait until we have something to do... 2569 if (!mStandby) { 2570 ALOGV("Audio hardware entering standby, mixer %p\n", this); 2571 mOutput->stream->common.standby(&mOutput->stream->common); 2572 mStandby = true; 2573 mBytesWritten = 0; 2574 } 2575 2576 if (!mActiveTracks.size() && mConfigEvents.isEmpty()) { 2577 // we're about to wait, flush the binder command buffer 2578 IPCThreadState::self()->flushCommands(); 2579 2580 if (exitPending()) break; 2581 2582 releaseWakeLock_l(); 2583 ALOGV("DirectOutputThread %p TID %d going to sleep\n", this, gettid()); 2584 mWaitWorkCV.wait(mLock); 2585 ALOGV("DirectOutputThread %p TID %d waking up in active mode\n", this, gettid()); 2586 acquireWakeLock_l(); 2587 2588 if (mMasterMute == false) { 2589 char value[PROPERTY_VALUE_MAX]; 2590 property_get("ro.audio.silent", value, "0"); 2591 if (atoi(value)) { 2592 LOGD("Silence is golden"); 2593 setMasterMute(true); 2594 } 2595 } 2596 2597 standbyTime = systemTime() + standbyDelay; 2598 sleepTime = idleSleepTime; 2599 continue; 2600 } 2601 } 2602 2603 effectChains = mEffectChains; 2604 2605 // find out which tracks need to be processed 2606 if (mActiveTracks.size() != 0) { 2607 sp<Track> t = mActiveTracks[0].promote(); 2608 if (t == 0) continue; 2609 2610 Track* const track = t.get(); 2611 audio_track_cblk_t* cblk = track->cblk(); 2612 2613 // The first time a track is added we wait 2614 // for all its buffers to be filled before processing it 2615 if (cblk->framesReady() && track->isReady() && 2616 !track->isPaused() && !track->isTerminated()) 2617 { 2618 //ALOGV("track %d u=%08x, s=%08x [OK]", track->name(), cblk->user, cblk->server); 2619 2620 if (track->mFillingUpStatus == Track::FS_FILLED) { 2621 track->mFillingUpStatus = Track::FS_ACTIVE; 2622 mLeftVolFloat = mRightVolFloat = 0; 2623 mLeftVolShort = mRightVolShort = 0; 2624 if (track->mState == TrackBase::RESUMING) { 2625 track->mState = TrackBase::ACTIVE; 2626 rampVolume = true; 2627 } 2628 } else if (cblk->server != 0) { 2629 // If the track is stopped before the first frame was mixed, 2630 // do not apply ramp 2631 rampVolume = true; 2632 } 2633 // compute volume for this track 2634 float left, right; 2635 if (track->isMuted() || mMasterMute || track->isPausing() || 2636 mStreamTypes[track->type()].mute) { 2637 left = right = 0; 2638 if (track->isPausing()) { 2639 track->setPaused(); 2640 } 2641 } else { 2642 float typeVolume = mStreamTypes[track->type()].volume; 2643 float v = mMasterVolume * typeVolume; 2644 float v_clamped = v * cblk->volume[0]; 2645 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2646 left = v_clamped/MAX_GAIN; 2647 v_clamped = v * cblk->volume[1]; 2648 if (v_clamped > MAX_GAIN) v_clamped = MAX_GAIN; 2649 right = v_clamped/MAX_GAIN; 2650 } 2651 2652 if (left != mLeftVolFloat || right != mRightVolFloat) { 2653 mLeftVolFloat = left; 2654 mRightVolFloat = right; 2655 2656 // If audio HAL implements volume control, 2657 // force software volume to nominal value 2658 if (mOutput->stream->set_volume(mOutput->stream, left, right) == NO_ERROR) { 2659 left = 1.0f; 2660 right = 1.0f; 2661 } 2662 2663 // Convert volumes from float to 8.24 2664 uint32_t vl = (uint32_t)(left * (1 << 24)); 2665 uint32_t vr = (uint32_t)(right * (1 << 24)); 2666 2667 // Delegate volume control to effect in track effect chain if needed 2668 // only one effect chain can be present on DirectOutputThread, so if 2669 // there is one, the track is connected to it 2670 if (!effectChains.isEmpty()) { 2671 // Do not ramp volume if volume is controlled by effect 2672 if(effectChains[0]->setVolume_l(&vl, &vr)) { 2673 rampVolume = false; 2674 } 2675 } 2676 2677 // Convert volumes from 8.24 to 4.12 format 2678 uint32_t v_clamped = (vl + (1 << 11)) >> 12; 2679 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2680 leftVol = (uint16_t)v_clamped; 2681 v_clamped = (vr + (1 << 11)) >> 12; 2682 if (v_clamped > MAX_GAIN_INT) v_clamped = MAX_GAIN_INT; 2683 rightVol = (uint16_t)v_clamped; 2684 } else { 2685 leftVol = mLeftVolShort; 2686 rightVol = mRightVolShort; 2687 rampVolume = false; 2688 } 2689 2690 // reset retry count 2691 track->mRetryCount = kMaxTrackRetriesDirect; 2692 activeTrack = t; 2693 mixerStatus = MIXER_TRACKS_READY; 2694 } else { 2695 //ALOGV("track %d u=%08x, s=%08x [NOT READY]", track->name(), cblk->user, cblk->server); 2696 if (track->isStopped()) { 2697 track->reset(); 2698 } 2699 if (track->isTerminated() || track->isStopped() || track->isPaused()) { 2700 // We have consumed all the buffers of this track. 2701 // Remove it from the list of active tracks. 2702 trackToRemove = track; 2703 } else { 2704 // No buffers for this track. Give it a few chances to 2705 // fill a buffer, then remove it from active list. 2706 if (--(track->mRetryCount) <= 0) { 2707 ALOGV("BUFFER TIMEOUT: remove(%d) from active list", track->name()); 2708 trackToRemove = track; 2709 } else { 2710 mixerStatus = MIXER_TRACKS_ENABLED; 2711 } 2712 } 2713 } 2714 } 2715 2716 // remove all the tracks that need to be... 2717 if (UNLIKELY(trackToRemove != 0)) { 2718 mActiveTracks.remove(trackToRemove); 2719 if (!effectChains.isEmpty()) { 2720 ALOGV("stopping track on chain %p for session Id: %d", effectChains[0].get(), 2721 trackToRemove->sessionId()); 2722 effectChains[0]->decActiveTrackCnt(); 2723 } 2724 if (trackToRemove->isTerminated()) { 2725 removeTrack_l(trackToRemove); 2726 } 2727 } 2728 2729 lockEffectChains_l(effectChains); 2730 } 2731 2732 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 2733 AudioBufferProvider::Buffer buffer; 2734 size_t frameCount = mFrameCount; 2735 curBuf = (int8_t *)mMixBuffer; 2736 // output audio to hardware 2737 while (frameCount) { 2738 buffer.frameCount = frameCount; 2739 activeTrack->getNextBuffer(&buffer); 2740 if (UNLIKELY(buffer.raw == 0)) { 2741 memset(curBuf, 0, frameCount * mFrameSize); 2742 break; 2743 } 2744 memcpy(curBuf, buffer.raw, buffer.frameCount * mFrameSize); 2745 frameCount -= buffer.frameCount; 2746 curBuf += buffer.frameCount * mFrameSize; 2747 activeTrack->releaseBuffer(&buffer); 2748 } 2749 sleepTime = 0; 2750 standbyTime = systemTime() + standbyDelay; 2751 } else { 2752 if (sleepTime == 0) { 2753 if (mixerStatus == MIXER_TRACKS_ENABLED) { 2754 sleepTime = activeSleepTime; 2755 } else { 2756 sleepTime = idleSleepTime; 2757 } 2758 } else if (mBytesWritten != 0 && audio_is_linear_pcm(mFormat)) { 2759 memset (mMixBuffer, 0, mFrameCount * mFrameSize); 2760 sleepTime = 0; 2761 } 2762 } 2763 2764 if (mSuspended) { 2765 sleepTime = suspendSleepTimeUs(); 2766 } 2767 // sleepTime == 0 means we must write to audio hardware 2768 if (sleepTime == 0) { 2769 if (mixerStatus == MIXER_TRACKS_READY) { 2770 applyVolume(leftVol, rightVol, rampVolume); 2771 } 2772 for (size_t i = 0; i < effectChains.size(); i ++) { 2773 effectChains[i]->process_l(); 2774 } 2775 unlockEffectChains(effectChains); 2776 2777 mLastWriteTime = systemTime(); 2778 mInWrite = true; 2779 mBytesWritten += mixBufferSize; 2780 int bytesWritten = (int)mOutput->stream->write(mOutput->stream, mMixBuffer, mixBufferSize); 2781 if (bytesWritten < 0) mBytesWritten -= mixBufferSize; 2782 mNumWrites++; 2783 mInWrite = false; 2784 mStandby = false; 2785 } else { 2786 unlockEffectChains(effectChains); 2787 usleep(sleepTime); 2788 } 2789 2790 // finally let go of removed track, without the lock held 2791 // since we can't guarantee the destructors won't acquire that 2792 // same lock. 2793 trackToRemove.clear(); 2794 activeTrack.clear(); 2795 2796 // Effect chains will be actually deleted here if they were removed from 2797 // mEffectChains list during mixing or effects processing 2798 effectChains.clear(); 2799 } 2800 2801 if (!mStandby) { 2802 mOutput->stream->common.standby(&mOutput->stream->common); 2803 } 2804 2805 releaseWakeLock(); 2806 2807 ALOGV("DirectOutputThread %p exiting", this); 2808 return false; 2809} 2810 2811// getTrackName_l() must be called with ThreadBase::mLock held 2812int AudioFlinger::DirectOutputThread::getTrackName_l() 2813{ 2814 return 0; 2815} 2816 2817// deleteTrackName_l() must be called with ThreadBase::mLock held 2818void AudioFlinger::DirectOutputThread::deleteTrackName_l(int name) 2819{ 2820} 2821 2822// checkForNewParameters_l() must be called with ThreadBase::mLock held 2823bool AudioFlinger::DirectOutputThread::checkForNewParameters_l() 2824{ 2825 bool reconfig = false; 2826 2827 while (!mNewParameters.isEmpty()) { 2828 status_t status = NO_ERROR; 2829 String8 keyValuePair = mNewParameters[0]; 2830 AudioParameter param = AudioParameter(keyValuePair); 2831 int value; 2832 2833 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 2834 // do not accept frame count changes if tracks are open as the track buffer 2835 // size depends on frame count and correct behavior would not be garantied 2836 // if frame count is changed after track creation 2837 if (!mTracks.isEmpty()) { 2838 status = INVALID_OPERATION; 2839 } else { 2840 reconfig = true; 2841 } 2842 } 2843 if (status == NO_ERROR) { 2844 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2845 keyValuePair.string()); 2846 if (!mStandby && status == INVALID_OPERATION) { 2847 mOutput->stream->common.standby(&mOutput->stream->common); 2848 mStandby = true; 2849 mBytesWritten = 0; 2850 status = mOutput->stream->common.set_parameters(&mOutput->stream->common, 2851 keyValuePair.string()); 2852 } 2853 if (status == NO_ERROR && reconfig) { 2854 readOutputParameters(); 2855 sendConfigEvent_l(AudioSystem::OUTPUT_CONFIG_CHANGED); 2856 } 2857 } 2858 2859 mNewParameters.removeAt(0); 2860 2861 mParamStatus = status; 2862 mParamCond.signal(); 2863 // wait for condition with time out in case the thread calling ThreadBase::setParameters() 2864 // already timed out waiting for the status and will never signal the condition. 2865 mWaitWorkCV.waitRelative(mLock, kSetParametersTimeout); 2866 } 2867 return reconfig; 2868} 2869 2870uint32_t AudioFlinger::DirectOutputThread::activeSleepTimeUs() 2871{ 2872 uint32_t time; 2873 if (audio_is_linear_pcm(mFormat)) { 2874 time = (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; 2875 } else { 2876 time = 10000; 2877 } 2878 return time; 2879} 2880 2881uint32_t AudioFlinger::DirectOutputThread::idleSleepTimeUs() 2882{ 2883 uint32_t time; 2884 if (audio_is_linear_pcm(mFormat)) { 2885 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; 2886 } else { 2887 time = 10000; 2888 } 2889 return time; 2890} 2891 2892uint32_t AudioFlinger::DirectOutputThread::suspendSleepTimeUs() 2893{ 2894 uint32_t time; 2895 if (audio_is_linear_pcm(mFormat)) { 2896 time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000); 2897 } else { 2898 time = 10000; 2899 } 2900 return time; 2901} 2902 2903 2904// ---------------------------------------------------------------------------- 2905 2906AudioFlinger::DuplicatingThread::DuplicatingThread(const sp<AudioFlinger>& audioFlinger, AudioFlinger::MixerThread* mainThread, int id) 2907 : MixerThread(audioFlinger, mainThread->getOutput(), id, mainThread->device()), mWaitTimeMs(UINT_MAX) 2908{ 2909 mType = ThreadBase::DUPLICATING; 2910 addOutputTrack(mainThread); 2911} 2912 2913AudioFlinger::DuplicatingThread::~DuplicatingThread() 2914{ 2915 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2916 mOutputTracks[i]->destroy(); 2917 } 2918 mOutputTracks.clear(); 2919} 2920 2921bool AudioFlinger::DuplicatingThread::threadLoop() 2922{ 2923 Vector< sp<Track> > tracksToRemove; 2924 uint32_t mixerStatus = MIXER_IDLE; 2925 nsecs_t standbyTime = systemTime(); 2926 size_t mixBufferSize = mFrameCount*mFrameSize; 2927 SortedVector< sp<OutputTrack> > outputTracks; 2928 uint32_t writeFrames = 0; 2929 uint32_t activeSleepTime = activeSleepTimeUs(); 2930 uint32_t idleSleepTime = idleSleepTimeUs(); 2931 uint32_t sleepTime = idleSleepTime; 2932 Vector< sp<EffectChain> > effectChains; 2933 2934 acquireWakeLock(); 2935 2936 while (!exitPending()) 2937 { 2938 processConfigEvents(); 2939 2940 mixerStatus = MIXER_IDLE; 2941 { // scope for the mLock 2942 2943 Mutex::Autolock _l(mLock); 2944 2945 if (checkForNewParameters_l()) { 2946 mixBufferSize = mFrameCount*mFrameSize; 2947 updateWaitTime(); 2948 activeSleepTime = activeSleepTimeUs(); 2949 idleSleepTime = idleSleepTimeUs(); 2950 } 2951 2952 const SortedVector< wp<Track> >& activeTracks = mActiveTracks; 2953 2954 for (size_t i = 0; i < mOutputTracks.size(); i++) { 2955 outputTracks.add(mOutputTracks[i]); 2956 } 2957 2958 // put audio hardware into standby after short delay 2959 if UNLIKELY((!activeTracks.size() && systemTime() > standbyTime) || 2960 mSuspended) { 2961 if (!mStandby) { 2962 for (size_t i = 0; i < outputTracks.size(); i++) { 2963 outputTracks[i]->stop(); 2964 } 2965 mStandby = true; 2966 mBytesWritten = 0; 2967 } 2968 2969 if (!activeTracks.size() && mConfigEvents.isEmpty()) { 2970 // we're about to wait, flush the binder command buffer 2971 IPCThreadState::self()->flushCommands(); 2972 outputTracks.clear(); 2973 2974 if (exitPending()) break; 2975 2976 releaseWakeLock_l(); 2977 ALOGV("DuplicatingThread %p TID %d going to sleep\n", this, gettid()); 2978 mWaitWorkCV.wait(mLock); 2979 ALOGV("DuplicatingThread %p TID %d waking up\n", this, gettid()); 2980 acquireWakeLock_l(); 2981 2982 if (mMasterMute == false) { 2983 char value[PROPERTY_VALUE_MAX]; 2984 property_get("ro.audio.silent", value, "0"); 2985 if (atoi(value)) { 2986 LOGD("Silence is golden"); 2987 setMasterMute(true); 2988 } 2989 } 2990 2991 standbyTime = systemTime() + kStandbyTimeInNsecs; 2992 sleepTime = idleSleepTime; 2993 continue; 2994 } 2995 } 2996 2997 mixerStatus = prepareTracks_l(activeTracks, &tracksToRemove); 2998 2999 // prevent any changes in effect chain list and in each effect chain 3000 // during mixing and effect process as the audio buffers could be deleted 3001 // or modified if an effect is created or deleted 3002 lockEffectChains_l(effectChains); 3003 } 3004 3005 if (LIKELY(mixerStatus == MIXER_TRACKS_READY)) { 3006 // mix buffers... 3007 if (outputsReady(outputTracks)) { 3008 mAudioMixer->process(); 3009 } else { 3010 memset(mMixBuffer, 0, mixBufferSize); 3011 } 3012 sleepTime = 0; 3013 writeFrames = mFrameCount; 3014 } else { 3015 if (sleepTime == 0) { 3016 if (mixerStatus == MIXER_TRACKS_ENABLED) { 3017 sleepTime = activeSleepTime; 3018 } else { 3019 sleepTime = idleSleepTime; 3020 } 3021 } else if (mBytesWritten != 0) { 3022 // flush remaining overflow buffers in output tracks 3023 for (size_t i = 0; i < outputTracks.size(); i++) { 3024 if (outputTracks[i]->isActive()) { 3025 sleepTime = 0; 3026 writeFrames = 0; 3027 memset(mMixBuffer, 0, mixBufferSize); 3028 break; 3029 } 3030 } 3031 } 3032 } 3033 3034 if (mSuspended) { 3035 sleepTime = suspendSleepTimeUs(); 3036 } 3037 // sleepTime == 0 means we must write to audio hardware 3038 if (sleepTime == 0) { 3039 for (size_t i = 0; i < effectChains.size(); i ++) { 3040 effectChains[i]->process_l(); 3041 } 3042 // enable changes in effect chain 3043 unlockEffectChains(effectChains); 3044 3045 standbyTime = systemTime() + kStandbyTimeInNsecs; 3046 for (size_t i = 0; i < outputTracks.size(); i++) { 3047 outputTracks[i]->write(mMixBuffer, writeFrames); 3048 } 3049 mStandby = false; 3050 mBytesWritten += mixBufferSize; 3051 } else { 3052 // enable changes in effect chain 3053 unlockEffectChains(effectChains); 3054 usleep(sleepTime); 3055 } 3056 3057 // finally let go of all our tracks, without the lock held 3058 // since we can't guarantee the destructors won't acquire that 3059 // same lock. 3060 tracksToRemove.clear(); 3061 outputTracks.clear(); 3062 3063 // Effect chains will be actually deleted here if they were removed from 3064 // mEffectChains list during mixing or effects processing 3065 effectChains.clear(); 3066 } 3067 3068 releaseWakeLock(); 3069 3070 return false; 3071} 3072 3073void AudioFlinger::DuplicatingThread::addOutputTrack(MixerThread *thread) 3074{ 3075 int frameCount = (3 * mFrameCount * mSampleRate) / thread->sampleRate(); 3076 OutputTrack *outputTrack = new OutputTrack((ThreadBase *)thread, 3077 this, 3078 mSampleRate, 3079 mFormat, 3080 mChannelMask, 3081 frameCount); 3082 if (outputTrack->cblk() != NULL) { 3083 thread->setStreamVolume(AUDIO_STREAM_CNT, 1.0f); 3084 mOutputTracks.add(outputTrack); 3085 ALOGV("addOutputTrack() track %p, on thread %p", outputTrack, thread); 3086 updateWaitTime(); 3087 } 3088} 3089 3090void AudioFlinger::DuplicatingThread::removeOutputTrack(MixerThread *thread) 3091{ 3092 Mutex::Autolock _l(mLock); 3093 for (size_t i = 0; i < mOutputTracks.size(); i++) { 3094 if (mOutputTracks[i]->thread() == (ThreadBase *)thread) { 3095 mOutputTracks[i]->destroy(); 3096 mOutputTracks.removeAt(i); 3097 updateWaitTime(); 3098 return; 3099 } 3100 } 3101 ALOGV("removeOutputTrack(): unkonwn thread: %p", thread); 3102} 3103 3104void AudioFlinger::DuplicatingThread::updateWaitTime() 3105{ 3106 mWaitTimeMs = UINT_MAX; 3107 for (size_t i = 0; i < mOutputTracks.size(); i++) { 3108 sp<ThreadBase> strong = mOutputTracks[i]->thread().promote(); 3109 if (strong != NULL) { 3110 uint32_t waitTimeMs = (strong->frameCount() * 2 * 1000) / strong->sampleRate(); 3111 if (waitTimeMs < mWaitTimeMs) { 3112 mWaitTimeMs = waitTimeMs; 3113 } 3114 } 3115 } 3116} 3117 3118 3119bool AudioFlinger::DuplicatingThread::outputsReady(SortedVector< sp<OutputTrack> > &outputTracks) 3120{ 3121 for (size_t i = 0; i < outputTracks.size(); i++) { 3122 sp <ThreadBase> thread = outputTracks[i]->thread().promote(); 3123 if (thread == 0) { 3124 LOGW("DuplicatingThread::outputsReady() could not promote thread on output track %p", outputTracks[i].get()); 3125 return false; 3126 } 3127 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3128 if (playbackThread->standby() && !playbackThread->isSuspended()) { 3129 ALOGV("DuplicatingThread output track %p on thread %p Not Ready", outputTracks[i].get(), thread.get()); 3130 return false; 3131 } 3132 } 3133 return true; 3134} 3135 3136uint32_t AudioFlinger::DuplicatingThread::activeSleepTimeUs() 3137{ 3138 return (mWaitTimeMs * 1000) / 2; 3139} 3140 3141// ---------------------------------------------------------------------------- 3142 3143// TrackBase constructor must be called with AudioFlinger::mLock held 3144AudioFlinger::ThreadBase::TrackBase::TrackBase( 3145 const wp<ThreadBase>& thread, 3146 const sp<Client>& client, 3147 uint32_t sampleRate, 3148 uint32_t format, 3149 uint32_t channelMask, 3150 int frameCount, 3151 uint32_t flags, 3152 const sp<IMemory>& sharedBuffer, 3153 int sessionId) 3154 : RefBase(), 3155 mThread(thread), 3156 mClient(client), 3157 mCblk(0), 3158 mFrameCount(0), 3159 mState(IDLE), 3160 mClientTid(-1), 3161 mFormat(format), 3162 mFlags(flags & ~SYSTEM_FLAGS_MASK), 3163 mSessionId(sessionId) 3164{ 3165 ALOGV_IF(sharedBuffer != 0, "sharedBuffer: %p, size: %d", sharedBuffer->pointer(), sharedBuffer->size()); 3166 3167 // LOGD("Creating track with %d buffers @ %d bytes", bufferCount, bufferSize); 3168 size_t size = sizeof(audio_track_cblk_t); 3169 uint8_t channelCount = popcount(channelMask); 3170 size_t bufferSize = frameCount*channelCount*sizeof(int16_t); 3171 if (sharedBuffer == 0) { 3172 size += bufferSize; 3173 } 3174 3175 if (client != NULL) { 3176 mCblkMemory = client->heap()->allocate(size); 3177 if (mCblkMemory != 0) { 3178 mCblk = static_cast<audio_track_cblk_t *>(mCblkMemory->pointer()); 3179 if (mCblk) { // construct the shared structure in-place. 3180 new(mCblk) audio_track_cblk_t(); 3181 // clear all buffers 3182 mCblk->frameCount = frameCount; 3183 mCblk->sampleRate = sampleRate; 3184 mChannelCount = channelCount; 3185 mChannelMask = channelMask; 3186 if (sharedBuffer == 0) { 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 } else { 3193 mBuffer = sharedBuffer->pointer(); 3194 } 3195 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 3196 } 3197 } else { 3198 LOGE("not enough memory for AudioTrack size=%u", size); 3199 client->heap()->dump("AudioTrack"); 3200 return; 3201 } 3202 } else { 3203 mCblk = (audio_track_cblk_t *)(new uint8_t[size]); 3204 if (mCblk) { // construct the shared structure in-place. 3205 new(mCblk) audio_track_cblk_t(); 3206 // clear all buffers 3207 mCblk->frameCount = frameCount; 3208 mCblk->sampleRate = sampleRate; 3209 mChannelCount = channelCount; 3210 mChannelMask = channelMask; 3211 mBuffer = (char*)mCblk + sizeof(audio_track_cblk_t); 3212 memset(mBuffer, 0, frameCount*channelCount*sizeof(int16_t)); 3213 // Force underrun condition to avoid false underrun callback until first data is 3214 // written to buffer (other flags are cleared) 3215 mCblk->flags = CBLK_UNDERRUN_ON; 3216 mBufferEnd = (uint8_t *)mBuffer + bufferSize; 3217 } 3218 } 3219} 3220 3221AudioFlinger::ThreadBase::TrackBase::~TrackBase() 3222{ 3223 if (mCblk) { 3224 mCblk->~audio_track_cblk_t(); // destroy our shared-structure. 3225 if (mClient == NULL) { 3226 delete mCblk; 3227 } 3228 } 3229 mCblkMemory.clear(); // and free the shared memory 3230 if (mClient != NULL) { 3231 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 3232 mClient.clear(); 3233 } 3234} 3235 3236void AudioFlinger::ThreadBase::TrackBase::releaseBuffer(AudioBufferProvider::Buffer* buffer) 3237{ 3238 buffer->raw = 0; 3239 mFrameCount = buffer->frameCount; 3240 step(); 3241 buffer->frameCount = 0; 3242} 3243 3244bool AudioFlinger::ThreadBase::TrackBase::step() { 3245 bool result; 3246 audio_track_cblk_t* cblk = this->cblk(); 3247 3248 result = cblk->stepServer(mFrameCount); 3249 if (!result) { 3250 ALOGV("stepServer failed acquiring cblk mutex"); 3251 mFlags |= STEPSERVER_FAILED; 3252 } 3253 return result; 3254} 3255 3256void AudioFlinger::ThreadBase::TrackBase::reset() { 3257 audio_track_cblk_t* cblk = this->cblk(); 3258 3259 cblk->user = 0; 3260 cblk->server = 0; 3261 cblk->userBase = 0; 3262 cblk->serverBase = 0; 3263 mFlags &= (uint32_t)(~SYSTEM_FLAGS_MASK); 3264 ALOGV("TrackBase::reset"); 3265} 3266 3267sp<IMemory> AudioFlinger::ThreadBase::TrackBase::getCblk() const 3268{ 3269 return mCblkMemory; 3270} 3271 3272int AudioFlinger::ThreadBase::TrackBase::sampleRate() const { 3273 return (int)mCblk->sampleRate; 3274} 3275 3276int AudioFlinger::ThreadBase::TrackBase::channelCount() const { 3277 return (const int)mChannelCount; 3278} 3279 3280uint32_t AudioFlinger::ThreadBase::TrackBase::channelMask() const { 3281 return mChannelMask; 3282} 3283 3284void* AudioFlinger::ThreadBase::TrackBase::getBuffer(uint32_t offset, uint32_t frames) const { 3285 audio_track_cblk_t* cblk = this->cblk(); 3286 int8_t *bufferStart = (int8_t *)mBuffer + (offset-cblk->serverBase)*cblk->frameSize; 3287 int8_t *bufferEnd = bufferStart + frames * cblk->frameSize; 3288 3289 // Check validity of returned pointer in case the track control block would have been corrupted. 3290 if (bufferStart < mBuffer || bufferStart > bufferEnd || bufferEnd > mBufferEnd || 3291 ((unsigned long)bufferStart & (unsigned long)(cblk->frameSize - 1))) { 3292 LOGE("TrackBase::getBuffer buffer out of range:\n start: %p, end %p , mBuffer %p mBufferEnd %p\n \ 3293 server %d, serverBase %d, user %d, userBase %d", 3294 bufferStart, bufferEnd, mBuffer, mBufferEnd, 3295 cblk->server, cblk->serverBase, cblk->user, cblk->userBase); 3296 return 0; 3297 } 3298 3299 return bufferStart; 3300} 3301 3302// ---------------------------------------------------------------------------- 3303 3304// Track constructor must be called with AudioFlinger::mLock and ThreadBase::mLock held 3305AudioFlinger::PlaybackThread::Track::Track( 3306 const wp<ThreadBase>& thread, 3307 const sp<Client>& client, 3308 int streamType, 3309 uint32_t sampleRate, 3310 uint32_t format, 3311 uint32_t channelMask, 3312 int frameCount, 3313 const sp<IMemory>& sharedBuffer, 3314 int sessionId) 3315 : TrackBase(thread, client, sampleRate, format, channelMask, frameCount, 0, sharedBuffer, sessionId), 3316 mMute(false), mSharedBuffer(sharedBuffer), mName(-1), mMainBuffer(NULL), mAuxBuffer(NULL), 3317 mAuxEffectId(0), mHasVolumeController(false) 3318{ 3319 if (mCblk != NULL) { 3320 sp<ThreadBase> baseThread = thread.promote(); 3321 if (baseThread != 0) { 3322 PlaybackThread *playbackThread = (PlaybackThread *)baseThread.get(); 3323 mName = playbackThread->getTrackName_l(); 3324 mMainBuffer = playbackThread->mixBuffer(); 3325 } 3326 ALOGV("Track constructor name %d, calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3327 if (mName < 0) { 3328 LOGE("no more track names available"); 3329 } 3330 mVolume[0] = 1.0f; 3331 mVolume[1] = 1.0f; 3332 mStreamType = streamType; 3333 // NOTE: audio_track_cblk_t::frameSize for 8 bit PCM data is based on a sample size of 3334 // 16 bit because data is converted to 16 bit before being stored in buffer by AudioTrack 3335 mCblk->frameSize = audio_is_linear_pcm(format) ? mChannelCount * sizeof(int16_t) : sizeof(uint8_t); 3336 } 3337} 3338 3339AudioFlinger::PlaybackThread::Track::~Track() 3340{ 3341 ALOGV("PlaybackThread::Track destructor"); 3342 sp<ThreadBase> thread = mThread.promote(); 3343 if (thread != 0) { 3344 Mutex::Autolock _l(thread->mLock); 3345 mState = TERMINATED; 3346 } 3347} 3348 3349void AudioFlinger::PlaybackThread::Track::destroy() 3350{ 3351 // NOTE: destroyTrack_l() can remove a strong reference to this Track 3352 // by removing it from mTracks vector, so there is a risk that this Tracks's 3353 // desctructor is called. As the destructor needs to lock mLock, 3354 // we must acquire a strong reference on this Track before locking mLock 3355 // here so that the destructor is called only when exiting this function. 3356 // On the other hand, as long as Track::destroy() is only called by 3357 // TrackHandle destructor, the TrackHandle still holds a strong ref on 3358 // this Track with its member mTrack. 3359 sp<Track> keep(this); 3360 { // scope for mLock 3361 sp<ThreadBase> thread = mThread.promote(); 3362 if (thread != 0) { 3363 if (!isOutputTrack()) { 3364 if (mState == ACTIVE || mState == RESUMING) { 3365 AudioSystem::stopOutput(thread->id(), 3366 (audio_stream_type_t)mStreamType, 3367 mSessionId); 3368 3369 // to track the speaker usage 3370 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3371 } 3372 AudioSystem::releaseOutput(thread->id()); 3373 } 3374 Mutex::Autolock _l(thread->mLock); 3375 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3376 playbackThread->destroyTrack_l(this); 3377 } 3378 } 3379} 3380 3381void AudioFlinger::PlaybackThread::Track::dump(char* buffer, size_t size) 3382{ 3383 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", 3384 mName - AudioMixer::TRACK0, 3385 (mClient == NULL) ? getpid() : mClient->pid(), 3386 mStreamType, 3387 mFormat, 3388 mChannelMask, 3389 mSessionId, 3390 mFrameCount, 3391 mState, 3392 mMute, 3393 mFillingUpStatus, 3394 mCblk->sampleRate, 3395 mCblk->volume[0], 3396 mCblk->volume[1], 3397 mCblk->server, 3398 mCblk->user, 3399 (int)mMainBuffer, 3400 (int)mAuxBuffer); 3401} 3402 3403status_t AudioFlinger::PlaybackThread::Track::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3404{ 3405 audio_track_cblk_t* cblk = this->cblk(); 3406 uint32_t framesReady; 3407 uint32_t framesReq = buffer->frameCount; 3408 3409 // Check if last stepServer failed, try to step now 3410 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3411 if (!step()) goto getNextBuffer_exit; 3412 ALOGV("stepServer recovered"); 3413 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3414 } 3415 3416 framesReady = cblk->framesReady(); 3417 3418 if (LIKELY(framesReady)) { 3419 uint32_t s = cblk->server; 3420 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3421 3422 bufferEnd = (cblk->loopEnd < bufferEnd) ? cblk->loopEnd : bufferEnd; 3423 if (framesReq > framesReady) { 3424 framesReq = framesReady; 3425 } 3426 if (s + framesReq > bufferEnd) { 3427 framesReq = bufferEnd - s; 3428 } 3429 3430 buffer->raw = getBuffer(s, framesReq); 3431 if (buffer->raw == 0) goto getNextBuffer_exit; 3432 3433 buffer->frameCount = framesReq; 3434 return NO_ERROR; 3435 } 3436 3437getNextBuffer_exit: 3438 buffer->raw = 0; 3439 buffer->frameCount = 0; 3440 ALOGV("getNextBuffer() no more data for track %d on thread %p", mName, mThread.unsafe_get()); 3441 return NOT_ENOUGH_DATA; 3442} 3443 3444bool AudioFlinger::PlaybackThread::Track::isReady() const { 3445 if (mFillingUpStatus != FS_FILLING || isStopped() || isPausing()) return true; 3446 3447 if (mCblk->framesReady() >= mCblk->frameCount || 3448 (mCblk->flags & CBLK_FORCEREADY_MSK)) { 3449 mFillingUpStatus = FS_FILLED; 3450 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3451 return true; 3452 } 3453 return false; 3454} 3455 3456status_t AudioFlinger::PlaybackThread::Track::start() 3457{ 3458 status_t status = NO_ERROR; 3459 ALOGV("start(%d), calling thread %d session %d", 3460 mName, IPCThreadState::self()->getCallingPid(), mSessionId); 3461 sp<ThreadBase> thread = mThread.promote(); 3462 if (thread != 0) { 3463 Mutex::Autolock _l(thread->mLock); 3464 int state = mState; 3465 // here the track could be either new, or restarted 3466 // in both cases "unstop" the track 3467 if (mState == PAUSED) { 3468 mState = TrackBase::RESUMING; 3469 ALOGV("PAUSED => RESUMING (%d) on thread %p", mName, this); 3470 } else { 3471 mState = TrackBase::ACTIVE; 3472 ALOGV("? => ACTIVE (%d) on thread %p", mName, this); 3473 } 3474 3475 if (!isOutputTrack() && state != ACTIVE && state != RESUMING) { 3476 thread->mLock.unlock(); 3477 status = AudioSystem::startOutput(thread->id(), 3478 (audio_stream_type_t)mStreamType, 3479 mSessionId); 3480 thread->mLock.lock(); 3481 3482 // to track the speaker usage 3483 if (status == NO_ERROR) { 3484 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStart); 3485 } 3486 } 3487 if (status == NO_ERROR) { 3488 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3489 playbackThread->addTrack_l(this); 3490 } else { 3491 mState = state; 3492 } 3493 } else { 3494 status = BAD_VALUE; 3495 } 3496 return status; 3497} 3498 3499void AudioFlinger::PlaybackThread::Track::stop() 3500{ 3501 ALOGV("stop(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3502 sp<ThreadBase> thread = mThread.promote(); 3503 if (thread != 0) { 3504 Mutex::Autolock _l(thread->mLock); 3505 int state = mState; 3506 if (mState > STOPPED) { 3507 mState = STOPPED; 3508 // If the track is not active (PAUSED and buffers full), flush buffers 3509 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3510 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3511 reset(); 3512 } 3513 ALOGV("(> STOPPED) => STOPPED (%d) on thread %p", mName, playbackThread); 3514 } 3515 if (!isOutputTrack() && (state == ACTIVE || state == RESUMING)) { 3516 thread->mLock.unlock(); 3517 AudioSystem::stopOutput(thread->id(), 3518 (audio_stream_type_t)mStreamType, 3519 mSessionId); 3520 thread->mLock.lock(); 3521 3522 // to track the speaker usage 3523 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3524 } 3525 } 3526} 3527 3528void AudioFlinger::PlaybackThread::Track::pause() 3529{ 3530 ALOGV("pause(%d), calling thread %d", mName, IPCThreadState::self()->getCallingPid()); 3531 sp<ThreadBase> thread = mThread.promote(); 3532 if (thread != 0) { 3533 Mutex::Autolock _l(thread->mLock); 3534 if (mState == ACTIVE || mState == RESUMING) { 3535 mState = PAUSING; 3536 ALOGV("ACTIVE/RESUMING => PAUSING (%d) on thread %p", mName, thread.get()); 3537 if (!isOutputTrack()) { 3538 thread->mLock.unlock(); 3539 AudioSystem::stopOutput(thread->id(), 3540 (audio_stream_type_t)mStreamType, 3541 mSessionId); 3542 thread->mLock.lock(); 3543 3544 // to track the speaker usage 3545 addBatteryData(IMediaPlayerService::kBatteryDataAudioFlingerStop); 3546 } 3547 } 3548 } 3549} 3550 3551void AudioFlinger::PlaybackThread::Track::flush() 3552{ 3553 ALOGV("flush(%d)", mName); 3554 sp<ThreadBase> thread = mThread.promote(); 3555 if (thread != 0) { 3556 Mutex::Autolock _l(thread->mLock); 3557 if (mState != STOPPED && mState != PAUSED && mState != PAUSING) { 3558 return; 3559 } 3560 // No point remaining in PAUSED state after a flush => go to 3561 // STOPPED state 3562 mState = STOPPED; 3563 3564 // do not reset the track if it is still in the process of being stopped or paused. 3565 // this will be done by prepareTracks_l() when the track is stopped. 3566 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3567 if (playbackThread->mActiveTracks.indexOf(this) < 0) { 3568 reset(); 3569 } 3570 } 3571} 3572 3573void AudioFlinger::PlaybackThread::Track::reset() 3574{ 3575 // Do not reset twice to avoid discarding data written just after a flush and before 3576 // the audioflinger thread detects the track is stopped. 3577 if (!mResetDone) { 3578 TrackBase::reset(); 3579 // Force underrun condition to avoid false underrun callback until first data is 3580 // written to buffer 3581 android_atomic_and(~CBLK_FORCEREADY_MSK, &mCblk->flags); 3582 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3583 mFillingUpStatus = FS_FILLING; 3584 mResetDone = true; 3585 } 3586} 3587 3588void AudioFlinger::PlaybackThread::Track::mute(bool muted) 3589{ 3590 mMute = muted; 3591} 3592 3593void AudioFlinger::PlaybackThread::Track::setVolume(float left, float right) 3594{ 3595 mVolume[0] = left; 3596 mVolume[1] = right; 3597} 3598 3599status_t AudioFlinger::PlaybackThread::Track::attachAuxEffect(int EffectId) 3600{ 3601 status_t status = DEAD_OBJECT; 3602 sp<ThreadBase> thread = mThread.promote(); 3603 if (thread != 0) { 3604 PlaybackThread *playbackThread = (PlaybackThread *)thread.get(); 3605 status = playbackThread->attachAuxEffect(this, EffectId); 3606 } 3607 return status; 3608} 3609 3610void AudioFlinger::PlaybackThread::Track::setAuxBuffer(int EffectId, int32_t *buffer) 3611{ 3612 mAuxEffectId = EffectId; 3613 mAuxBuffer = buffer; 3614} 3615 3616// ---------------------------------------------------------------------------- 3617 3618// RecordTrack constructor must be called with AudioFlinger::mLock held 3619AudioFlinger::RecordThread::RecordTrack::RecordTrack( 3620 const wp<ThreadBase>& thread, 3621 const sp<Client>& client, 3622 uint32_t sampleRate, 3623 uint32_t format, 3624 uint32_t channelMask, 3625 int frameCount, 3626 uint32_t flags, 3627 int sessionId) 3628 : TrackBase(thread, client, sampleRate, format, 3629 channelMask, frameCount, flags, 0, sessionId), 3630 mOverflow(false) 3631{ 3632 if (mCblk != NULL) { 3633 ALOGV("RecordTrack constructor, size %d", (int)mBufferEnd - (int)mBuffer); 3634 if (format == AUDIO_FORMAT_PCM_16_BIT) { 3635 mCblk->frameSize = mChannelCount * sizeof(int16_t); 3636 } else if (format == AUDIO_FORMAT_PCM_8_BIT) { 3637 mCblk->frameSize = mChannelCount * sizeof(int8_t); 3638 } else { 3639 mCblk->frameSize = sizeof(int8_t); 3640 } 3641 } 3642} 3643 3644AudioFlinger::RecordThread::RecordTrack::~RecordTrack() 3645{ 3646 sp<ThreadBase> thread = mThread.promote(); 3647 if (thread != 0) { 3648 AudioSystem::releaseInput(thread->id()); 3649 } 3650} 3651 3652status_t AudioFlinger::RecordThread::RecordTrack::getNextBuffer(AudioBufferProvider::Buffer* buffer) 3653{ 3654 audio_track_cblk_t* cblk = this->cblk(); 3655 uint32_t framesAvail; 3656 uint32_t framesReq = buffer->frameCount; 3657 3658 // Check if last stepServer failed, try to step now 3659 if (mFlags & TrackBase::STEPSERVER_FAILED) { 3660 if (!step()) goto getNextBuffer_exit; 3661 ALOGV("stepServer recovered"); 3662 mFlags &= ~TrackBase::STEPSERVER_FAILED; 3663 } 3664 3665 framesAvail = cblk->framesAvailable_l(); 3666 3667 if (LIKELY(framesAvail)) { 3668 uint32_t s = cblk->server; 3669 uint32_t bufferEnd = cblk->serverBase + cblk->frameCount; 3670 3671 if (framesReq > framesAvail) { 3672 framesReq = framesAvail; 3673 } 3674 if (s + framesReq > bufferEnd) { 3675 framesReq = bufferEnd - s; 3676 } 3677 3678 buffer->raw = getBuffer(s, framesReq); 3679 if (buffer->raw == 0) goto getNextBuffer_exit; 3680 3681 buffer->frameCount = framesReq; 3682 return NO_ERROR; 3683 } 3684 3685getNextBuffer_exit: 3686 buffer->raw = 0; 3687 buffer->frameCount = 0; 3688 return NOT_ENOUGH_DATA; 3689} 3690 3691status_t AudioFlinger::RecordThread::RecordTrack::start() 3692{ 3693 sp<ThreadBase> thread = mThread.promote(); 3694 if (thread != 0) { 3695 RecordThread *recordThread = (RecordThread *)thread.get(); 3696 return recordThread->start(this); 3697 } else { 3698 return BAD_VALUE; 3699 } 3700} 3701 3702void AudioFlinger::RecordThread::RecordTrack::stop() 3703{ 3704 sp<ThreadBase> thread = mThread.promote(); 3705 if (thread != 0) { 3706 RecordThread *recordThread = (RecordThread *)thread.get(); 3707 recordThread->stop(this); 3708 TrackBase::reset(); 3709 // Force overerrun condition to avoid false overrun callback until first data is 3710 // read from buffer 3711 android_atomic_or(CBLK_UNDERRUN_ON, &mCblk->flags); 3712 } 3713} 3714 3715void AudioFlinger::RecordThread::RecordTrack::dump(char* buffer, size_t size) 3716{ 3717 snprintf(buffer, size, " %05d %03u 0x%08x %05d %04u %01d %05u %08x %08x\n", 3718 (mClient == NULL) ? getpid() : mClient->pid(), 3719 mFormat, 3720 mChannelMask, 3721 mSessionId, 3722 mFrameCount, 3723 mState, 3724 mCblk->sampleRate, 3725 mCblk->server, 3726 mCblk->user); 3727} 3728 3729 3730// ---------------------------------------------------------------------------- 3731 3732AudioFlinger::PlaybackThread::OutputTrack::OutputTrack( 3733 const wp<ThreadBase>& thread, 3734 DuplicatingThread *sourceThread, 3735 uint32_t sampleRate, 3736 uint32_t format, 3737 uint32_t channelMask, 3738 int frameCount) 3739 : Track(thread, NULL, AUDIO_STREAM_CNT, sampleRate, format, channelMask, frameCount, NULL, 0), 3740 mActive(false), mSourceThread(sourceThread) 3741{ 3742 3743 PlaybackThread *playbackThread = (PlaybackThread *)thread.unsafe_get(); 3744 if (mCblk != NULL) { 3745 mCblk->flags |= CBLK_DIRECTION_OUT; 3746 mCblk->buffers = (char*)mCblk + sizeof(audio_track_cblk_t); 3747 mCblk->volume[0] = mCblk->volume[1] = 0x1000; 3748 mOutBuffer.frameCount = 0; 3749 playbackThread->mTracks.add(this); 3750 ALOGV("OutputTrack constructor mCblk %p, mBuffer %p, mCblk->buffers %p, " \ 3751 "mCblk->frameCount %d, mCblk->sampleRate %d, mChannelMask 0x%08x mBufferEnd %p", 3752 mCblk, mBuffer, mCblk->buffers, 3753 mCblk->frameCount, mCblk->sampleRate, mChannelMask, mBufferEnd); 3754 } else { 3755 LOGW("Error creating output track on thread %p", playbackThread); 3756 } 3757} 3758 3759AudioFlinger::PlaybackThread::OutputTrack::~OutputTrack() 3760{ 3761 clearBufferQueue(); 3762} 3763 3764status_t AudioFlinger::PlaybackThread::OutputTrack::start() 3765{ 3766 status_t status = Track::start(); 3767 if (status != NO_ERROR) { 3768 return status; 3769 } 3770 3771 mActive = true; 3772 mRetryCount = 127; 3773 return status; 3774} 3775 3776void AudioFlinger::PlaybackThread::OutputTrack::stop() 3777{ 3778 Track::stop(); 3779 clearBufferQueue(); 3780 mOutBuffer.frameCount = 0; 3781 mActive = false; 3782} 3783 3784bool AudioFlinger::PlaybackThread::OutputTrack::write(int16_t* data, uint32_t frames) 3785{ 3786 Buffer *pInBuffer; 3787 Buffer inBuffer; 3788 uint32_t channelCount = mChannelCount; 3789 bool outputBufferFull = false; 3790 inBuffer.frameCount = frames; 3791 inBuffer.i16 = data; 3792 3793 uint32_t waitTimeLeftMs = mSourceThread->waitTimeMs(); 3794 3795 if (!mActive && frames != 0) { 3796 start(); 3797 sp<ThreadBase> thread = mThread.promote(); 3798 if (thread != 0) { 3799 MixerThread *mixerThread = (MixerThread *)thread.get(); 3800 if (mCblk->frameCount > frames){ 3801 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3802 uint32_t startFrames = (mCblk->frameCount - frames); 3803 pInBuffer = new Buffer; 3804 pInBuffer->mBuffer = new int16_t[startFrames * channelCount]; 3805 pInBuffer->frameCount = startFrames; 3806 pInBuffer->i16 = pInBuffer->mBuffer; 3807 memset(pInBuffer->raw, 0, startFrames * channelCount * sizeof(int16_t)); 3808 mBufferQueue.add(pInBuffer); 3809 } else { 3810 LOGW ("OutputTrack::write() %p no more buffers in queue", this); 3811 } 3812 } 3813 } 3814 } 3815 3816 while (waitTimeLeftMs) { 3817 // First write pending buffers, then new data 3818 if (mBufferQueue.size()) { 3819 pInBuffer = mBufferQueue.itemAt(0); 3820 } else { 3821 pInBuffer = &inBuffer; 3822 } 3823 3824 if (pInBuffer->frameCount == 0) { 3825 break; 3826 } 3827 3828 if (mOutBuffer.frameCount == 0) { 3829 mOutBuffer.frameCount = pInBuffer->frameCount; 3830 nsecs_t startTime = systemTime(); 3831 if (obtainBuffer(&mOutBuffer, waitTimeLeftMs) == (status_t)AudioTrack::NO_MORE_BUFFERS) { 3832 ALOGV ("OutputTrack::write() %p thread %p no more output buffers", this, mThread.unsafe_get()); 3833 outputBufferFull = true; 3834 break; 3835 } 3836 uint32_t waitTimeMs = (uint32_t)ns2ms(systemTime() - startTime); 3837 if (waitTimeLeftMs >= waitTimeMs) { 3838 waitTimeLeftMs -= waitTimeMs; 3839 } else { 3840 waitTimeLeftMs = 0; 3841 } 3842 } 3843 3844 uint32_t outFrames = pInBuffer->frameCount > mOutBuffer.frameCount ? mOutBuffer.frameCount : pInBuffer->frameCount; 3845 memcpy(mOutBuffer.raw, pInBuffer->raw, outFrames * channelCount * sizeof(int16_t)); 3846 mCblk->stepUser(outFrames); 3847 pInBuffer->frameCount -= outFrames; 3848 pInBuffer->i16 += outFrames * channelCount; 3849 mOutBuffer.frameCount -= outFrames; 3850 mOutBuffer.i16 += outFrames * channelCount; 3851 3852 if (pInBuffer->frameCount == 0) { 3853 if (mBufferQueue.size()) { 3854 mBufferQueue.removeAt(0); 3855 delete [] pInBuffer->mBuffer; 3856 delete pInBuffer; 3857 ALOGV("OutputTrack::write() %p thread %p released overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3858 } else { 3859 break; 3860 } 3861 } 3862 } 3863 3864 // If we could not write all frames, allocate a buffer and queue it for next time. 3865 if (inBuffer.frameCount) { 3866 sp<ThreadBase> thread = mThread.promote(); 3867 if (thread != 0 && !thread->standby()) { 3868 if (mBufferQueue.size() < kMaxOverFlowBuffers) { 3869 pInBuffer = new Buffer; 3870 pInBuffer->mBuffer = new int16_t[inBuffer.frameCount * channelCount]; 3871 pInBuffer->frameCount = inBuffer.frameCount; 3872 pInBuffer->i16 = pInBuffer->mBuffer; 3873 memcpy(pInBuffer->raw, inBuffer.raw, inBuffer.frameCount * channelCount * sizeof(int16_t)); 3874 mBufferQueue.add(pInBuffer); 3875 ALOGV("OutputTrack::write() %p thread %p adding overflow buffer %d", this, mThread.unsafe_get(), mBufferQueue.size()); 3876 } else { 3877 LOGW("OutputTrack::write() %p thread %p no more overflow buffers", mThread.unsafe_get(), this); 3878 } 3879 } 3880 } 3881 3882 // Calling write() with a 0 length buffer, means that no more data will be written: 3883 // If no more buffers are pending, fill output track buffer to make sure it is started 3884 // by output mixer. 3885 if (frames == 0 && mBufferQueue.size() == 0) { 3886 if (mCblk->user < mCblk->frameCount) { 3887 frames = mCblk->frameCount - mCblk->user; 3888 pInBuffer = new Buffer; 3889 pInBuffer->mBuffer = new int16_t[frames * channelCount]; 3890 pInBuffer->frameCount = frames; 3891 pInBuffer->i16 = pInBuffer->mBuffer; 3892 memset(pInBuffer->raw, 0, frames * channelCount * sizeof(int16_t)); 3893 mBufferQueue.add(pInBuffer); 3894 } else if (mActive) { 3895 stop(); 3896 } 3897 } 3898 3899 return outputBufferFull; 3900} 3901 3902status_t AudioFlinger::PlaybackThread::OutputTrack::obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs) 3903{ 3904 int active; 3905 status_t result; 3906 audio_track_cblk_t* cblk = mCblk; 3907 uint32_t framesReq = buffer->frameCount; 3908 3909// ALOGV("OutputTrack::obtainBuffer user %d, server %d", cblk->user, cblk->server); 3910 buffer->frameCount = 0; 3911 3912 uint32_t framesAvail = cblk->framesAvailable(); 3913 3914 3915 if (framesAvail == 0) { 3916 Mutex::Autolock _l(cblk->lock); 3917 goto start_loop_here; 3918 while (framesAvail == 0) { 3919 active = mActive; 3920 if (UNLIKELY(!active)) { 3921 ALOGV("Not active and NO_MORE_BUFFERS"); 3922 return AudioTrack::NO_MORE_BUFFERS; 3923 } 3924 result = cblk->cv.waitRelative(cblk->lock, milliseconds(waitTimeMs)); 3925 if (result != NO_ERROR) { 3926 return AudioTrack::NO_MORE_BUFFERS; 3927 } 3928 // read the server count again 3929 start_loop_here: 3930 framesAvail = cblk->framesAvailable_l(); 3931 } 3932 } 3933 3934// if (framesAvail < framesReq) { 3935// return AudioTrack::NO_MORE_BUFFERS; 3936// } 3937 3938 if (framesReq > framesAvail) { 3939 framesReq = framesAvail; 3940 } 3941 3942 uint32_t u = cblk->user; 3943 uint32_t bufferEnd = cblk->userBase + cblk->frameCount; 3944 3945 if (u + framesReq > bufferEnd) { 3946 framesReq = bufferEnd - u; 3947 } 3948 3949 buffer->frameCount = framesReq; 3950 buffer->raw = (void *)cblk->buffer(u); 3951 return NO_ERROR; 3952} 3953 3954 3955void AudioFlinger::PlaybackThread::OutputTrack::clearBufferQueue() 3956{ 3957 size_t size = mBufferQueue.size(); 3958 Buffer *pBuffer; 3959 3960 for (size_t i = 0; i < size; i++) { 3961 pBuffer = mBufferQueue.itemAt(i); 3962 delete [] pBuffer->mBuffer; 3963 delete pBuffer; 3964 } 3965 mBufferQueue.clear(); 3966} 3967 3968// ---------------------------------------------------------------------------- 3969 3970AudioFlinger::Client::Client(const sp<AudioFlinger>& audioFlinger, pid_t pid) 3971 : RefBase(), 3972 mAudioFlinger(audioFlinger), 3973 mMemoryDealer(new MemoryDealer(1024*1024, "AudioFlinger::Client")), 3974 mPid(pid) 3975{ 3976 // 1 MB of address space is good for 32 tracks, 8 buffers each, 4 KB/buffer 3977} 3978 3979// Client destructor must be called with AudioFlinger::mLock held 3980AudioFlinger::Client::~Client() 3981{ 3982 mAudioFlinger->removeClient_l(mPid); 3983} 3984 3985const sp<MemoryDealer>& AudioFlinger::Client::heap() const 3986{ 3987 return mMemoryDealer; 3988} 3989 3990// ---------------------------------------------------------------------------- 3991 3992AudioFlinger::NotificationClient::NotificationClient(const sp<AudioFlinger>& audioFlinger, 3993 const sp<IAudioFlingerClient>& client, 3994 pid_t pid) 3995 : mAudioFlinger(audioFlinger), mPid(pid), mClient(client) 3996{ 3997} 3998 3999AudioFlinger::NotificationClient::~NotificationClient() 4000{ 4001 mClient.clear(); 4002} 4003 4004void AudioFlinger::NotificationClient::binderDied(const wp<IBinder>& who) 4005{ 4006 sp<NotificationClient> keep(this); 4007 { 4008 mAudioFlinger->removeNotificationClient(mPid); 4009 } 4010} 4011 4012// ---------------------------------------------------------------------------- 4013 4014AudioFlinger::TrackHandle::TrackHandle(const sp<AudioFlinger::PlaybackThread::Track>& track) 4015 : BnAudioTrack(), 4016 mTrack(track) 4017{ 4018} 4019 4020AudioFlinger::TrackHandle::~TrackHandle() { 4021 // just stop the track on deletion, associated resources 4022 // will be freed from the main thread once all pending buffers have 4023 // been played. Unless it's not in the active track list, in which 4024 // case we free everything now... 4025 mTrack->destroy(); 4026} 4027 4028status_t AudioFlinger::TrackHandle::start() { 4029 return mTrack->start(); 4030} 4031 4032void AudioFlinger::TrackHandle::stop() { 4033 mTrack->stop(); 4034} 4035 4036void AudioFlinger::TrackHandle::flush() { 4037 mTrack->flush(); 4038} 4039 4040void AudioFlinger::TrackHandle::mute(bool e) { 4041 mTrack->mute(e); 4042} 4043 4044void AudioFlinger::TrackHandle::pause() { 4045 mTrack->pause(); 4046} 4047 4048void AudioFlinger::TrackHandle::setVolume(float left, float right) { 4049 mTrack->setVolume(left, right); 4050} 4051 4052sp<IMemory> AudioFlinger::TrackHandle::getCblk() const { 4053 return mTrack->getCblk(); 4054} 4055 4056status_t AudioFlinger::TrackHandle::attachAuxEffect(int EffectId) 4057{ 4058 return mTrack->attachAuxEffect(EffectId); 4059} 4060 4061status_t AudioFlinger::TrackHandle::onTransact( 4062 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 4063{ 4064 return BnAudioTrack::onTransact(code, data, reply, flags); 4065} 4066 4067// ---------------------------------------------------------------------------- 4068 4069sp<IAudioRecord> AudioFlinger::openRecord( 4070 pid_t pid, 4071 int input, 4072 uint32_t sampleRate, 4073 uint32_t format, 4074 uint32_t channelMask, 4075 int frameCount, 4076 uint32_t flags, 4077 int *sessionId, 4078 status_t *status) 4079{ 4080 sp<RecordThread::RecordTrack> recordTrack; 4081 sp<RecordHandle> recordHandle; 4082 sp<Client> client; 4083 wp<Client> wclient; 4084 status_t lStatus; 4085 RecordThread *thread; 4086 size_t inFrameCount; 4087 int lSessionId; 4088 4089 // check calling permissions 4090 if (!recordingAllowed()) { 4091 lStatus = PERMISSION_DENIED; 4092 goto Exit; 4093 } 4094 4095 // add client to list 4096 { // scope for mLock 4097 Mutex::Autolock _l(mLock); 4098 thread = checkRecordThread_l(input); 4099 if (thread == NULL) { 4100 lStatus = BAD_VALUE; 4101 goto Exit; 4102 } 4103 4104 wclient = mClients.valueFor(pid); 4105 if (wclient != NULL) { 4106 client = wclient.promote(); 4107 } else { 4108 client = new Client(this, pid); 4109 mClients.add(pid, client); 4110 } 4111 4112 // If no audio session id is provided, create one here 4113 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 4114 lSessionId = *sessionId; 4115 } else { 4116 lSessionId = nextUniqueId(); 4117 if (sessionId != NULL) { 4118 *sessionId = lSessionId; 4119 } 4120 } 4121 // create new record track. The record track uses one track in mHardwareMixerThread by convention. 4122 recordTrack = thread->createRecordTrack_l(client, 4123 sampleRate, 4124 format, 4125 channelMask, 4126 frameCount, 4127 flags, 4128 lSessionId, 4129 &lStatus); 4130 } 4131 if (lStatus != NO_ERROR) { 4132 // remove local strong reference to Client before deleting the RecordTrack so that the Client 4133 // destructor is called by the TrackBase destructor with mLock held 4134 client.clear(); 4135 recordTrack.clear(); 4136 goto Exit; 4137 } 4138 4139 // return to handle to client 4140 recordHandle = new RecordHandle(recordTrack); 4141 lStatus = NO_ERROR; 4142 4143Exit: 4144 if (status) { 4145 *status = lStatus; 4146 } 4147 return recordHandle; 4148} 4149 4150// ---------------------------------------------------------------------------- 4151 4152AudioFlinger::RecordHandle::RecordHandle(const sp<AudioFlinger::RecordThread::RecordTrack>& recordTrack) 4153 : BnAudioRecord(), 4154 mRecordTrack(recordTrack) 4155{ 4156} 4157 4158AudioFlinger::RecordHandle::~RecordHandle() { 4159 stop(); 4160} 4161 4162status_t AudioFlinger::RecordHandle::start() { 4163 ALOGV("RecordHandle::start()"); 4164 return mRecordTrack->start(); 4165} 4166 4167void AudioFlinger::RecordHandle::stop() { 4168 ALOGV("RecordHandle::stop()"); 4169 mRecordTrack->stop(); 4170} 4171 4172sp<IMemory> AudioFlinger::RecordHandle::getCblk() const { 4173 return mRecordTrack->getCblk(); 4174} 4175 4176status_t AudioFlinger::RecordHandle::onTransact( 4177 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 4178{ 4179 return BnAudioRecord::onTransact(code, data, reply, flags); 4180} 4181 4182// ---------------------------------------------------------------------------- 4183 4184AudioFlinger::RecordThread::RecordThread(const sp<AudioFlinger>& audioFlinger, 4185 AudioStreamIn *input, 4186 uint32_t sampleRate, 4187 uint32_t channels, 4188 int id, 4189 uint32_t device) : 4190 ThreadBase(audioFlinger, id, device), 4191 mInput(input), mTrack(NULL), mResampler(0), mRsmpOutBuffer(0), mRsmpInBuffer(0) 4192{ 4193 mType = ThreadBase::RECORD; 4194 4195 snprintf(mName, kNameLength, "AudioIn_%d", id); 4196 4197 mReqChannelCount = popcount(channels); 4198 mReqSampleRate = sampleRate; 4199 readInputParameters(); 4200} 4201 4202 4203AudioFlinger::RecordThread::~RecordThread() 4204{ 4205 delete[] mRsmpInBuffer; 4206 if (mResampler != 0) { 4207 delete mResampler; 4208 delete[] mRsmpOutBuffer; 4209 } 4210} 4211 4212void AudioFlinger::RecordThread::onFirstRef() 4213{ 4214 run(mName, PRIORITY_URGENT_AUDIO); 4215} 4216 4217status_t AudioFlinger::RecordThread::readyToRun() 4218{ 4219 status_t status = initCheck(); 4220 LOGW_IF(status != NO_ERROR,"RecordThread %p could not initialize", this); 4221 return status; 4222} 4223 4224bool AudioFlinger::RecordThread::threadLoop() 4225{ 4226 AudioBufferProvider::Buffer buffer; 4227 sp<RecordTrack> activeTrack; 4228 Vector< sp<EffectChain> > effectChains; 4229 4230 nsecs_t lastWarning = 0; 4231 4232 acquireWakeLock(); 4233 4234 // start recording 4235 while (!exitPending()) { 4236 4237 processConfigEvents(); 4238 4239 { // scope for mLock 4240 Mutex::Autolock _l(mLock); 4241 checkForNewParameters_l(); 4242 if (mActiveTrack == 0 && mConfigEvents.isEmpty()) { 4243 if (!mStandby) { 4244 mInput->stream->common.standby(&mInput->stream->common); 4245 mStandby = true; 4246 } 4247 4248 if (exitPending()) break; 4249 4250 releaseWakeLock_l(); 4251 ALOGV("RecordThread: loop stopping"); 4252 // go to sleep 4253 mWaitWorkCV.wait(mLock); 4254 ALOGV("RecordThread: loop starting"); 4255 acquireWakeLock_l(); 4256 continue; 4257 } 4258 if (mActiveTrack != 0) { 4259 if (mActiveTrack->mState == TrackBase::PAUSING) { 4260 if (!mStandby) { 4261 mInput->stream->common.standby(&mInput->stream->common); 4262 mStandby = true; 4263 } 4264 mActiveTrack.clear(); 4265 mStartStopCond.broadcast(); 4266 } else if (mActiveTrack->mState == TrackBase::RESUMING) { 4267 if (mReqChannelCount != mActiveTrack->channelCount()) { 4268 mActiveTrack.clear(); 4269 mStartStopCond.broadcast(); 4270 } else if (mBytesRead != 0) { 4271 // record start succeeds only if first read from audio input 4272 // succeeds 4273 if (mBytesRead > 0) { 4274 mActiveTrack->mState = TrackBase::ACTIVE; 4275 } else { 4276 mActiveTrack.clear(); 4277 } 4278 mStartStopCond.broadcast(); 4279 } 4280 mStandby = false; 4281 } 4282 } 4283 lockEffectChains_l(effectChains); 4284 } 4285 4286 if (mActiveTrack != 0) { 4287 if (mActiveTrack->mState != TrackBase::ACTIVE && 4288 mActiveTrack->mState != TrackBase::RESUMING) { 4289 unlockEffectChains(effectChains); 4290 usleep(kRecordThreadSleepUs); 4291 continue; 4292 } 4293 for (size_t i = 0; i < effectChains.size(); i ++) { 4294 effectChains[i]->process_l(); 4295 } 4296 4297 buffer.frameCount = mFrameCount; 4298 if (LIKELY(mActiveTrack->getNextBuffer(&buffer) == NO_ERROR)) { 4299 size_t framesOut = buffer.frameCount; 4300 if (mResampler == 0) { 4301 // no resampling 4302 while (framesOut) { 4303 size_t framesIn = mFrameCount - mRsmpInIndex; 4304 if (framesIn) { 4305 int8_t *src = (int8_t *)mRsmpInBuffer + mRsmpInIndex * mFrameSize; 4306 int8_t *dst = buffer.i8 + (buffer.frameCount - framesOut) * mActiveTrack->mCblk->frameSize; 4307 if (framesIn > framesOut) 4308 framesIn = framesOut; 4309 mRsmpInIndex += framesIn; 4310 framesOut -= framesIn; 4311 if ((int)mChannelCount == mReqChannelCount || 4312 mFormat != AUDIO_FORMAT_PCM_16_BIT) { 4313 memcpy(dst, src, framesIn * mFrameSize); 4314 } else { 4315 int16_t *src16 = (int16_t *)src; 4316 int16_t *dst16 = (int16_t *)dst; 4317 if (mChannelCount == 1) { 4318 while (framesIn--) { 4319 *dst16++ = *src16; 4320 *dst16++ = *src16++; 4321 } 4322 } else { 4323 while (framesIn--) { 4324 *dst16++ = (int16_t)(((int32_t)*src16 + (int32_t)*(src16 + 1)) >> 1); 4325 src16 += 2; 4326 } 4327 } 4328 } 4329 } 4330 if (framesOut && mFrameCount == mRsmpInIndex) { 4331 if (framesOut == mFrameCount && 4332 ((int)mChannelCount == mReqChannelCount || mFormat != AUDIO_FORMAT_PCM_16_BIT)) { 4333 mBytesRead = mInput->stream->read(mInput->stream, buffer.raw, mInputBytes); 4334 framesOut = 0; 4335 } else { 4336 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 4337 mRsmpInIndex = 0; 4338 } 4339 if (mBytesRead < 0) { 4340 LOGE("Error reading audio input"); 4341 if (mActiveTrack->mState == TrackBase::ACTIVE) { 4342 // Force input into standby so that it tries to 4343 // recover at next read attempt 4344 mInput->stream->common.standby(&mInput->stream->common); 4345 usleep(kRecordThreadSleepUs); 4346 } 4347 mRsmpInIndex = mFrameCount; 4348 framesOut = 0; 4349 buffer.frameCount = 0; 4350 } 4351 } 4352 } 4353 } else { 4354 // resampling 4355 4356 memset(mRsmpOutBuffer, 0, framesOut * 2 * sizeof(int32_t)); 4357 // alter output frame count as if we were expecting stereo samples 4358 if (mChannelCount == 1 && mReqChannelCount == 1) { 4359 framesOut >>= 1; 4360 } 4361 mResampler->resample(mRsmpOutBuffer, framesOut, this); 4362 // ditherAndClamp() works as long as all buffers returned by mActiveTrack->getNextBuffer() 4363 // are 32 bit aligned which should be always true. 4364 if (mChannelCount == 2 && mReqChannelCount == 1) { 4365 AudioMixer::ditherAndClamp(mRsmpOutBuffer, mRsmpOutBuffer, framesOut); 4366 // the resampler always outputs stereo samples: do post stereo to mono conversion 4367 int16_t *src = (int16_t *)mRsmpOutBuffer; 4368 int16_t *dst = buffer.i16; 4369 while (framesOut--) { 4370 *dst++ = (int16_t)(((int32_t)*src + (int32_t)*(src + 1)) >> 1); 4371 src += 2; 4372 } 4373 } else { 4374 AudioMixer::ditherAndClamp((int32_t *)buffer.raw, mRsmpOutBuffer, framesOut); 4375 } 4376 4377 } 4378 mActiveTrack->releaseBuffer(&buffer); 4379 mActiveTrack->overflow(); 4380 } 4381 // client isn't retrieving buffers fast enough 4382 else { 4383 if (!mActiveTrack->setOverflow()) { 4384 nsecs_t now = systemTime(); 4385 if ((now - lastWarning) > kWarningThrottle) { 4386 LOGW("RecordThread: buffer overflow"); 4387 lastWarning = now; 4388 } 4389 } 4390 // Release the processor for a while before asking for a new buffer. 4391 // This will give the application more chance to read from the buffer and 4392 // clear the overflow. 4393 usleep(kRecordThreadSleepUs); 4394 } 4395 } 4396 // enable changes in effect chain 4397 unlockEffectChains(effectChains); 4398 effectChains.clear(); 4399 } 4400 4401 if (!mStandby) { 4402 mInput->stream->common.standby(&mInput->stream->common); 4403 } 4404 mActiveTrack.clear(); 4405 4406 mStartStopCond.broadcast(); 4407 4408 releaseWakeLock(); 4409 4410 ALOGV("RecordThread %p exiting", this); 4411 return false; 4412} 4413 4414 4415sp<AudioFlinger::RecordThread::RecordTrack> AudioFlinger::RecordThread::createRecordTrack_l( 4416 const sp<AudioFlinger::Client>& client, 4417 uint32_t sampleRate, 4418 int format, 4419 int channelMask, 4420 int frameCount, 4421 uint32_t flags, 4422 int sessionId, 4423 status_t *status) 4424{ 4425 sp<RecordTrack> track; 4426 status_t lStatus; 4427 4428 lStatus = initCheck(); 4429 if (lStatus != NO_ERROR) { 4430 LOGE("Audio driver not initialized."); 4431 goto Exit; 4432 } 4433 4434 { // scope for mLock 4435 Mutex::Autolock _l(mLock); 4436 4437 track = new RecordTrack(this, client, sampleRate, 4438 format, channelMask, frameCount, flags, sessionId); 4439 4440 if (track->getCblk() == NULL) { 4441 lStatus = NO_MEMORY; 4442 goto Exit; 4443 } 4444 4445 mTrack = track.get(); 4446 // disable AEC and NS if the device is a BT SCO headset supporting those pre processings 4447 bool suspend = audio_is_bluetooth_sco_device( 4448 (audio_devices_t)(mDevice & AUDIO_DEVICE_IN_ALL)) && mAudioFlinger->btNrecIsOff(); 4449 setEffectSuspended_l(FX_IID_AEC, suspend, sessionId); 4450 setEffectSuspended_l(FX_IID_NS, suspend, sessionId); 4451 } 4452 lStatus = NO_ERROR; 4453 4454Exit: 4455 if (status) { 4456 *status = lStatus; 4457 } 4458 return track; 4459} 4460 4461status_t AudioFlinger::RecordThread::start(RecordThread::RecordTrack* recordTrack) 4462{ 4463 ALOGV("RecordThread::start"); 4464 sp <ThreadBase> strongMe = this; 4465 status_t status = NO_ERROR; 4466 { 4467 AutoMutex lock(&mLock); 4468 if (mActiveTrack != 0) { 4469 if (recordTrack != mActiveTrack.get()) { 4470 status = -EBUSY; 4471 } else if (mActiveTrack->mState == TrackBase::PAUSING) { 4472 mActiveTrack->mState = TrackBase::ACTIVE; 4473 } 4474 return status; 4475 } 4476 4477 recordTrack->mState = TrackBase::IDLE; 4478 mActiveTrack = recordTrack; 4479 mLock.unlock(); 4480 status_t status = AudioSystem::startInput(mId); 4481 mLock.lock(); 4482 if (status != NO_ERROR) { 4483 mActiveTrack.clear(); 4484 return status; 4485 } 4486 mRsmpInIndex = mFrameCount; 4487 mBytesRead = 0; 4488 if (mResampler != NULL) { 4489 mResampler->reset(); 4490 } 4491 mActiveTrack->mState = TrackBase::RESUMING; 4492 // signal thread to start 4493 ALOGV("Signal record thread"); 4494 mWaitWorkCV.signal(); 4495 // do not wait for mStartStopCond if exiting 4496 if (mExiting) { 4497 mActiveTrack.clear(); 4498 status = INVALID_OPERATION; 4499 goto startError; 4500 } 4501 mStartStopCond.wait(mLock); 4502 if (mActiveTrack == 0) { 4503 ALOGV("Record failed to start"); 4504 status = BAD_VALUE; 4505 goto startError; 4506 } 4507 ALOGV("Record started OK"); 4508 return status; 4509 } 4510startError: 4511 AudioSystem::stopInput(mId); 4512 return status; 4513} 4514 4515void AudioFlinger::RecordThread::stop(RecordThread::RecordTrack* recordTrack) { 4516 ALOGV("RecordThread::stop"); 4517 sp <ThreadBase> strongMe = this; 4518 { 4519 AutoMutex lock(&mLock); 4520 if (mActiveTrack != 0 && recordTrack == mActiveTrack.get()) { 4521 mActiveTrack->mState = TrackBase::PAUSING; 4522 // do not wait for mStartStopCond if exiting 4523 if (mExiting) { 4524 return; 4525 } 4526 mStartStopCond.wait(mLock); 4527 // if we have been restarted, recordTrack == mActiveTrack.get() here 4528 if (mActiveTrack == 0 || recordTrack != mActiveTrack.get()) { 4529 mLock.unlock(); 4530 AudioSystem::stopInput(mId); 4531 mLock.lock(); 4532 ALOGV("Record stopped OK"); 4533 } 4534 } 4535 } 4536} 4537 4538status_t AudioFlinger::RecordThread::dump(int fd, const Vector<String16>& args) 4539{ 4540 const size_t SIZE = 256; 4541 char buffer[SIZE]; 4542 String8 result; 4543 pid_t pid = 0; 4544 4545 snprintf(buffer, SIZE, "\nInput thread %p internals\n", this); 4546 result.append(buffer); 4547 4548 if (mActiveTrack != 0) { 4549 result.append("Active Track:\n"); 4550 result.append(" Clien Fmt Chn mask Session Buf S SRate Serv User\n"); 4551 mActiveTrack->dump(buffer, SIZE); 4552 result.append(buffer); 4553 4554 snprintf(buffer, SIZE, "In index: %d\n", mRsmpInIndex); 4555 result.append(buffer); 4556 snprintf(buffer, SIZE, "In size: %d\n", mInputBytes); 4557 result.append(buffer); 4558 snprintf(buffer, SIZE, "Resampling: %d\n", (mResampler != 0)); 4559 result.append(buffer); 4560 snprintf(buffer, SIZE, "Out channel count: %d\n", mReqChannelCount); 4561 result.append(buffer); 4562 snprintf(buffer, SIZE, "Out sample rate: %d\n", mReqSampleRate); 4563 result.append(buffer); 4564 4565 4566 } else { 4567 result.append("No record client\n"); 4568 } 4569 write(fd, result.string(), result.size()); 4570 4571 dumpBase(fd, args); 4572 dumpEffectChains(fd, args); 4573 4574 return NO_ERROR; 4575} 4576 4577status_t AudioFlinger::RecordThread::getNextBuffer(AudioBufferProvider::Buffer* buffer) 4578{ 4579 size_t framesReq = buffer->frameCount; 4580 size_t framesReady = mFrameCount - mRsmpInIndex; 4581 int channelCount; 4582 4583 if (framesReady == 0) { 4584 mBytesRead = mInput->stream->read(mInput->stream, mRsmpInBuffer, mInputBytes); 4585 if (mBytesRead < 0) { 4586 LOGE("RecordThread::getNextBuffer() Error reading audio input"); 4587 if (mActiveTrack->mState == TrackBase::ACTIVE) { 4588 // Force input into standby so that it tries to 4589 // recover at next read attempt 4590 mInput->stream->common.standby(&mInput->stream->common); 4591 usleep(kRecordThreadSleepUs); 4592 } 4593 buffer->raw = 0; 4594 buffer->frameCount = 0; 4595 return NOT_ENOUGH_DATA; 4596 } 4597 mRsmpInIndex = 0; 4598 framesReady = mFrameCount; 4599 } 4600 4601 if (framesReq > framesReady) { 4602 framesReq = framesReady; 4603 } 4604 4605 if (mChannelCount == 1 && mReqChannelCount == 2) { 4606 channelCount = 1; 4607 } else { 4608 channelCount = 2; 4609 } 4610 buffer->raw = mRsmpInBuffer + mRsmpInIndex * channelCount; 4611 buffer->frameCount = framesReq; 4612 return NO_ERROR; 4613} 4614 4615void AudioFlinger::RecordThread::releaseBuffer(AudioBufferProvider::Buffer* buffer) 4616{ 4617 mRsmpInIndex += buffer->frameCount; 4618 buffer->frameCount = 0; 4619} 4620 4621bool AudioFlinger::RecordThread::checkForNewParameters_l() 4622{ 4623 bool reconfig = false; 4624 4625 while (!mNewParameters.isEmpty()) { 4626 status_t status = NO_ERROR; 4627 String8 keyValuePair = mNewParameters[0]; 4628 AudioParameter param = AudioParameter(keyValuePair); 4629 int value; 4630 int reqFormat = mFormat; 4631 int reqSamplingRate = mReqSampleRate; 4632 int reqChannelCount = mReqChannelCount; 4633 4634 if (param.getInt(String8(AudioParameter::keySamplingRate), value) == NO_ERROR) { 4635 reqSamplingRate = value; 4636 reconfig = true; 4637 } 4638 if (param.getInt(String8(AudioParameter::keyFormat), value) == NO_ERROR) { 4639 reqFormat = value; 4640 reconfig = true; 4641 } 4642 if (param.getInt(String8(AudioParameter::keyChannels), value) == NO_ERROR) { 4643 reqChannelCount = popcount(value); 4644 reconfig = true; 4645 } 4646 if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) { 4647 // do not accept frame count changes if tracks are open as the track buffer 4648 // size depends on frame count and correct behavior would not be garantied 4649 // if frame count is changed after track creation 4650 if (mActiveTrack != 0) { 4651 status = INVALID_OPERATION; 4652 } else { 4653 reconfig = true; 4654 } 4655 } 4656 if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) { 4657 // forward device change to effects that have requested to be 4658 // aware of attached audio device. 4659 for (size_t i = 0; i < mEffectChains.size(); i++) { 4660 mEffectChains[i]->setDevice_l(value); 4661 } 4662 // store input device and output device but do not forward output device to audio HAL. 4663 // Note that status is ignored by the caller for output device 4664 // (see AudioFlinger::setParameters() 4665 if (value & AUDIO_DEVICE_OUT_ALL) { 4666 mDevice &= (uint32_t)~(value & AUDIO_DEVICE_OUT_ALL); 4667 status = BAD_VALUE; 4668 } else { 4669 mDevice &= (uint32_t)~(value & AUDIO_DEVICE_IN_ALL); 4670 // disable AEC and NS if the device is a BT SCO headset supporting those pre processings 4671 if (mTrack != NULL) { 4672 bool suspend = audio_is_bluetooth_sco_device( 4673 (audio_devices_t)value) && mAudioFlinger->btNrecIsOff(); 4674 setEffectSuspended_l(FX_IID_AEC, suspend, mTrack->sessionId()); 4675 setEffectSuspended_l(FX_IID_NS, suspend, mTrack->sessionId()); 4676 } 4677 } 4678 mDevice |= (uint32_t)value; 4679 } 4680 if (status == NO_ERROR) { 4681 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4682 if (status == INVALID_OPERATION) { 4683 mInput->stream->common.standby(&mInput->stream->common); 4684 status = mInput->stream->common.set_parameters(&mInput->stream->common, keyValuePair.string()); 4685 } 4686 if (reconfig) { 4687 if (status == BAD_VALUE && 4688 reqFormat == mInput->stream->common.get_format(&mInput->stream->common) && 4689 reqFormat == AUDIO_FORMAT_PCM_16_BIT && 4690 ((int)mInput->stream->common.get_sample_rate(&mInput->stream->common) <= (2 * reqSamplingRate)) && 4691 (popcount(mInput->stream->common.get_channels(&mInput->stream->common)) < 3) && 4692 (reqChannelCount < 3)) { 4693 status = NO_ERROR; 4694 } 4695 if (status == NO_ERROR) { 4696 readInputParameters(); 4697 sendConfigEvent_l(AudioSystem::INPUT_CONFIG_CHANGED); 4698 } 4699 } 4700 } 4701 4702 mNewParameters.removeAt(0); 4703 4704 mParamStatus = status; 4705 mParamCond.signal(); 4706 // wait for condition with time out in case the thread calling ThreadBase::setParameters() 4707 // already timed out waiting for the status and will never signal the condition. 4708 mWaitWorkCV.waitRelative(mLock, kSetParametersTimeout); 4709 } 4710 return reconfig; 4711} 4712 4713String8 AudioFlinger::RecordThread::getParameters(const String8& keys) 4714{ 4715 char *s; 4716 String8 out_s8 = String8(); 4717 4718 Mutex::Autolock _l(mLock); 4719 if (initCheck() != NO_ERROR) { 4720 return out_s8; 4721 } 4722 4723 s = mInput->stream->common.get_parameters(&mInput->stream->common, keys.string()); 4724 out_s8 = String8(s); 4725 free(s); 4726 return out_s8; 4727} 4728 4729void AudioFlinger::RecordThread::audioConfigChanged_l(int event, int param) { 4730 AudioSystem::OutputDescriptor desc; 4731 void *param2 = 0; 4732 4733 switch (event) { 4734 case AudioSystem::INPUT_OPENED: 4735 case AudioSystem::INPUT_CONFIG_CHANGED: 4736 desc.channels = mChannelMask; 4737 desc.samplingRate = mSampleRate; 4738 desc.format = mFormat; 4739 desc.frameCount = mFrameCount; 4740 desc.latency = 0; 4741 param2 = &desc; 4742 break; 4743 4744 case AudioSystem::INPUT_CLOSED: 4745 default: 4746 break; 4747 } 4748 mAudioFlinger->audioConfigChanged_l(event, mId, param2); 4749} 4750 4751void AudioFlinger::RecordThread::readInputParameters() 4752{ 4753 if (mRsmpInBuffer) delete mRsmpInBuffer; 4754 if (mRsmpOutBuffer) delete mRsmpOutBuffer; 4755 if (mResampler) delete mResampler; 4756 mResampler = 0; 4757 4758 mSampleRate = mInput->stream->common.get_sample_rate(&mInput->stream->common); 4759 mChannelMask = mInput->stream->common.get_channels(&mInput->stream->common); 4760 mChannelCount = (uint16_t)popcount(mChannelMask); 4761 mFormat = mInput->stream->common.get_format(&mInput->stream->common); 4762 mFrameSize = (uint16_t)audio_stream_frame_size(&mInput->stream->common); 4763 mInputBytes = mInput->stream->common.get_buffer_size(&mInput->stream->common); 4764 mFrameCount = mInputBytes / mFrameSize; 4765 mRsmpInBuffer = new int16_t[mFrameCount * mChannelCount]; 4766 4767 if (mSampleRate != mReqSampleRate && mChannelCount < 3 && mReqChannelCount < 3) 4768 { 4769 int channelCount; 4770 // optmization: if mono to mono, use the resampler in stereo to stereo mode to avoid 4771 // stereo to mono post process as the resampler always outputs stereo. 4772 if (mChannelCount == 1 && mReqChannelCount == 2) { 4773 channelCount = 1; 4774 } else { 4775 channelCount = 2; 4776 } 4777 mResampler = AudioResampler::create(16, channelCount, mReqSampleRate); 4778 mResampler->setSampleRate(mSampleRate); 4779 mResampler->setVolume(AudioMixer::UNITY_GAIN, AudioMixer::UNITY_GAIN); 4780 mRsmpOutBuffer = new int32_t[mFrameCount * 2]; 4781 4782 // optmization: if mono to mono, alter input frame count as if we were inputing stereo samples 4783 if (mChannelCount == 1 && mReqChannelCount == 1) { 4784 mFrameCount >>= 1; 4785 } 4786 4787 } 4788 mRsmpInIndex = mFrameCount; 4789} 4790 4791unsigned int AudioFlinger::RecordThread::getInputFramesLost() 4792{ 4793 Mutex::Autolock _l(mLock); 4794 if (initCheck() != NO_ERROR) { 4795 return 0; 4796 } 4797 4798 return mInput->stream->get_input_frames_lost(mInput->stream); 4799} 4800 4801uint32_t AudioFlinger::RecordThread::hasAudioSession(int sessionId) 4802{ 4803 Mutex::Autolock _l(mLock); 4804 uint32_t result = 0; 4805 if (getEffectChain_l(sessionId) != 0) { 4806 result = EFFECT_SESSION; 4807 } 4808 4809 if (mTrack != NULL && sessionId == mTrack->sessionId()) { 4810 result |= TRACK_SESSION; 4811 } 4812 4813 return result; 4814} 4815 4816AudioFlinger::RecordThread::RecordTrack* AudioFlinger::RecordThread::track() 4817{ 4818 Mutex::Autolock _l(mLock); 4819 return mTrack; 4820} 4821 4822AudioFlinger::AudioStreamIn* AudioFlinger::RecordThread::getInput() 4823{ 4824 Mutex::Autolock _l(mLock); 4825 return mInput; 4826} 4827 4828AudioFlinger::AudioStreamIn* AudioFlinger::RecordThread::clearInput() 4829{ 4830 Mutex::Autolock _l(mLock); 4831 AudioStreamIn *input = mInput; 4832 mInput = NULL; 4833 return input; 4834} 4835 4836// this method must always be called either with ThreadBase mLock held or inside the thread loop 4837audio_stream_t* AudioFlinger::RecordThread::stream() 4838{ 4839 if (mInput == NULL) { 4840 return NULL; 4841 } 4842 return &mInput->stream->common; 4843} 4844 4845 4846// ---------------------------------------------------------------------------- 4847 4848int AudioFlinger::openOutput(uint32_t *pDevices, 4849 uint32_t *pSamplingRate, 4850 uint32_t *pFormat, 4851 uint32_t *pChannels, 4852 uint32_t *pLatencyMs, 4853 uint32_t flags) 4854{ 4855 status_t status; 4856 PlaybackThread *thread = NULL; 4857 mHardwareStatus = AUDIO_HW_OUTPUT_OPEN; 4858 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 4859 uint32_t format = pFormat ? *pFormat : 0; 4860 uint32_t channels = pChannels ? *pChannels : 0; 4861 uint32_t latency = pLatencyMs ? *pLatencyMs : 0; 4862 audio_stream_out_t *outStream; 4863 audio_hw_device_t *outHwDev; 4864 4865 ALOGV("openOutput(), Device %x, SamplingRate %d, Format %d, Channels %x, flags %x", 4866 pDevices ? *pDevices : 0, 4867 samplingRate, 4868 format, 4869 channels, 4870 flags); 4871 4872 if (pDevices == NULL || *pDevices == 0) { 4873 return 0; 4874 } 4875 4876 Mutex::Autolock _l(mLock); 4877 4878 outHwDev = findSuitableHwDev_l(*pDevices); 4879 if (outHwDev == NULL) 4880 return 0; 4881 4882 status = outHwDev->open_output_stream(outHwDev, *pDevices, (int *)&format, 4883 &channels, &samplingRate, &outStream); 4884 ALOGV("openOutput() openOutputStream returned output %p, SamplingRate %d, Format %d, Channels %x, status %d", 4885 outStream, 4886 samplingRate, 4887 format, 4888 channels, 4889 status); 4890 4891 mHardwareStatus = AUDIO_HW_IDLE; 4892 if (outStream != NULL) { 4893 AudioStreamOut *output = new AudioStreamOut(outHwDev, outStream); 4894 int id = nextUniqueId(); 4895 4896 if ((flags & AUDIO_POLICY_OUTPUT_FLAG_DIRECT) || 4897 (format != AUDIO_FORMAT_PCM_16_BIT) || 4898 (channels != AUDIO_CHANNEL_OUT_STEREO)) { 4899 thread = new DirectOutputThread(this, output, id, *pDevices); 4900 ALOGV("openOutput() created direct output: ID %d thread %p", id, thread); 4901 } else { 4902 thread = new MixerThread(this, output, id, *pDevices); 4903 ALOGV("openOutput() created mixer output: ID %d thread %p", id, thread); 4904 } 4905 mPlaybackThreads.add(id, thread); 4906 4907 if (pSamplingRate) *pSamplingRate = samplingRate; 4908 if (pFormat) *pFormat = format; 4909 if (pChannels) *pChannels = channels; 4910 if (pLatencyMs) *pLatencyMs = thread->latency(); 4911 4912 // notify client processes of the new output creation 4913 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4914 return id; 4915 } 4916 4917 return 0; 4918} 4919 4920int AudioFlinger::openDuplicateOutput(int output1, int output2) 4921{ 4922 Mutex::Autolock _l(mLock); 4923 MixerThread *thread1 = checkMixerThread_l(output1); 4924 MixerThread *thread2 = checkMixerThread_l(output2); 4925 4926 if (thread1 == NULL || thread2 == NULL) { 4927 LOGW("openDuplicateOutput() wrong output mixer type for output %d or %d", output1, output2); 4928 return 0; 4929 } 4930 4931 int id = nextUniqueId(); 4932 DuplicatingThread *thread = new DuplicatingThread(this, thread1, id); 4933 thread->addOutputTrack(thread2); 4934 mPlaybackThreads.add(id, thread); 4935 // notify client processes of the new output creation 4936 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 4937 return id; 4938} 4939 4940status_t AudioFlinger::closeOutput(int output) 4941{ 4942 // keep strong reference on the playback thread so that 4943 // it is not destroyed while exit() is executed 4944 sp <PlaybackThread> thread; 4945 { 4946 Mutex::Autolock _l(mLock); 4947 thread = checkPlaybackThread_l(output); 4948 if (thread == NULL) { 4949 return BAD_VALUE; 4950 } 4951 4952 ALOGV("closeOutput() %d", output); 4953 4954 if (thread->type() == ThreadBase::MIXER) { 4955 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 4956 if (mPlaybackThreads.valueAt(i)->type() == ThreadBase::DUPLICATING) { 4957 DuplicatingThread *dupThread = (DuplicatingThread *)mPlaybackThreads.valueAt(i).get(); 4958 dupThread->removeOutputTrack((MixerThread *)thread.get()); 4959 } 4960 } 4961 } 4962 void *param2 = 0; 4963 audioConfigChanged_l(AudioSystem::OUTPUT_CLOSED, output, param2); 4964 mPlaybackThreads.removeItem(output); 4965 } 4966 thread->exit(); 4967 4968 if (thread->type() != ThreadBase::DUPLICATING) { 4969 AudioStreamOut *out = thread->clearOutput(); 4970 // from now on thread->mOutput is NULL 4971 out->hwDev->close_output_stream(out->hwDev, out->stream); 4972 delete out; 4973 } 4974 return NO_ERROR; 4975} 4976 4977status_t AudioFlinger::suspendOutput(int output) 4978{ 4979 Mutex::Autolock _l(mLock); 4980 PlaybackThread *thread = checkPlaybackThread_l(output); 4981 4982 if (thread == NULL) { 4983 return BAD_VALUE; 4984 } 4985 4986 ALOGV("suspendOutput() %d", output); 4987 thread->suspend(); 4988 4989 return NO_ERROR; 4990} 4991 4992status_t AudioFlinger::restoreOutput(int output) 4993{ 4994 Mutex::Autolock _l(mLock); 4995 PlaybackThread *thread = checkPlaybackThread_l(output); 4996 4997 if (thread == NULL) { 4998 return BAD_VALUE; 4999 } 5000 5001 ALOGV("restoreOutput() %d", output); 5002 5003 thread->restore(); 5004 5005 return NO_ERROR; 5006} 5007 5008int AudioFlinger::openInput(uint32_t *pDevices, 5009 uint32_t *pSamplingRate, 5010 uint32_t *pFormat, 5011 uint32_t *pChannels, 5012 uint32_t acoustics) 5013{ 5014 status_t status; 5015 RecordThread *thread = NULL; 5016 uint32_t samplingRate = pSamplingRate ? *pSamplingRate : 0; 5017 uint32_t format = pFormat ? *pFormat : 0; 5018 uint32_t channels = pChannels ? *pChannels : 0; 5019 uint32_t reqSamplingRate = samplingRate; 5020 uint32_t reqFormat = format; 5021 uint32_t reqChannels = channels; 5022 audio_stream_in_t *inStream; 5023 audio_hw_device_t *inHwDev; 5024 5025 if (pDevices == NULL || *pDevices == 0) { 5026 return 0; 5027 } 5028 5029 Mutex::Autolock _l(mLock); 5030 5031 inHwDev = findSuitableHwDev_l(*pDevices); 5032 if (inHwDev == NULL) 5033 return 0; 5034 5035 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 5036 &channels, &samplingRate, 5037 (audio_in_acoustics_t)acoustics, 5038 &inStream); 5039 ALOGV("openInput() openInputStream returned input %p, SamplingRate %d, Format %d, Channels %x, acoustics %x, status %d", 5040 inStream, 5041 samplingRate, 5042 format, 5043 channels, 5044 acoustics, 5045 status); 5046 5047 // If the input could not be opened with the requested parameters and we can handle the conversion internally, 5048 // try to open again with the proposed parameters. The AudioFlinger can resample the input and do mono to stereo 5049 // or stereo to mono conversions on 16 bit PCM inputs. 5050 if (inStream == NULL && status == BAD_VALUE && 5051 reqFormat == format && format == AUDIO_FORMAT_PCM_16_BIT && 5052 (samplingRate <= 2 * reqSamplingRate) && 5053 (popcount(channels) < 3) && (popcount(reqChannels) < 3)) { 5054 ALOGV("openInput() reopening with proposed sampling rate and channels"); 5055 status = inHwDev->open_input_stream(inHwDev, *pDevices, (int *)&format, 5056 &channels, &samplingRate, 5057 (audio_in_acoustics_t)acoustics, 5058 &inStream); 5059 } 5060 5061 if (inStream != NULL) { 5062 AudioStreamIn *input = new AudioStreamIn(inHwDev, inStream); 5063 5064 int id = nextUniqueId(); 5065 // Start record thread 5066 // RecorThread require both input and output device indication to forward to audio 5067 // pre processing modules 5068 uint32_t device = (*pDevices) | primaryOutputDevice_l(); 5069 thread = new RecordThread(this, 5070 input, 5071 reqSamplingRate, 5072 reqChannels, 5073 id, 5074 device); 5075 mRecordThreads.add(id, thread); 5076 ALOGV("openInput() created record thread: ID %d thread %p", id, thread); 5077 if (pSamplingRate) *pSamplingRate = reqSamplingRate; 5078 if (pFormat) *pFormat = format; 5079 if (pChannels) *pChannels = reqChannels; 5080 5081 input->stream->common.standby(&input->stream->common); 5082 5083 // notify client processes of the new input creation 5084 thread->audioConfigChanged_l(AudioSystem::INPUT_OPENED); 5085 return id; 5086 } 5087 5088 return 0; 5089} 5090 5091status_t AudioFlinger::closeInput(int input) 5092{ 5093 // keep strong reference on the record thread so that 5094 // it is not destroyed while exit() is executed 5095 sp <RecordThread> thread; 5096 { 5097 Mutex::Autolock _l(mLock); 5098 thread = checkRecordThread_l(input); 5099 if (thread == NULL) { 5100 return BAD_VALUE; 5101 } 5102 5103 ALOGV("closeInput() %d", input); 5104 void *param2 = 0; 5105 audioConfigChanged_l(AudioSystem::INPUT_CLOSED, input, param2); 5106 mRecordThreads.removeItem(input); 5107 } 5108 thread->exit(); 5109 5110 AudioStreamIn *in = thread->clearInput(); 5111 // from now on thread->mInput is NULL 5112 in->hwDev->close_input_stream(in->hwDev, in->stream); 5113 delete in; 5114 5115 return NO_ERROR; 5116} 5117 5118status_t AudioFlinger::setStreamOutput(uint32_t stream, int output) 5119{ 5120 Mutex::Autolock _l(mLock); 5121 MixerThread *dstThread = checkMixerThread_l(output); 5122 if (dstThread == NULL) { 5123 LOGW("setStreamOutput() bad output id %d", output); 5124 return BAD_VALUE; 5125 } 5126 5127 ALOGV("setStreamOutput() stream %d to output %d", stream, output); 5128 audioConfigChanged_l(AudioSystem::STREAM_CONFIG_CHANGED, output, &stream); 5129 5130 dstThread->setStreamValid(stream, true); 5131 5132 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5133 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 5134 if (thread != dstThread && 5135 thread->type() != ThreadBase::DIRECT) { 5136 MixerThread *srcThread = (MixerThread *)thread; 5137 srcThread->setStreamValid(stream, false); 5138 srcThread->invalidateTracks(stream); 5139 } 5140 } 5141 5142 return NO_ERROR; 5143} 5144 5145 5146int AudioFlinger::newAudioSessionId() 5147{ 5148 return nextUniqueId(); 5149} 5150 5151void AudioFlinger::acquireAudioSessionId(int audioSession) 5152{ 5153 Mutex::Autolock _l(mLock); 5154 int caller = IPCThreadState::self()->getCallingPid(); 5155 ALOGV("acquiring %d from %d", audioSession, caller); 5156 int num = mAudioSessionRefs.size(); 5157 for (int i = 0; i< num; i++) { 5158 AudioSessionRef *ref = mAudioSessionRefs.editItemAt(i); 5159 if (ref->sessionid == audioSession && ref->pid == caller) { 5160 ref->cnt++; 5161 ALOGV(" incremented refcount to %d", ref->cnt); 5162 return; 5163 } 5164 } 5165 AudioSessionRef *ref = new AudioSessionRef(); 5166 ref->sessionid = audioSession; 5167 ref->pid = caller; 5168 ref->cnt = 1; 5169 mAudioSessionRefs.push(ref); 5170 ALOGV(" added new entry for %d", ref->sessionid); 5171} 5172 5173void AudioFlinger::releaseAudioSessionId(int audioSession) 5174{ 5175 Mutex::Autolock _l(mLock); 5176 int caller = IPCThreadState::self()->getCallingPid(); 5177 ALOGV("releasing %d from %d", audioSession, caller); 5178 int num = mAudioSessionRefs.size(); 5179 for (int i = 0; i< num; i++) { 5180 AudioSessionRef *ref = mAudioSessionRefs.itemAt(i); 5181 if (ref->sessionid == audioSession && ref->pid == caller) { 5182 ref->cnt--; 5183 ALOGV(" decremented refcount to %d", ref->cnt); 5184 if (ref->cnt == 0) { 5185 mAudioSessionRefs.removeAt(i); 5186 delete ref; 5187 purgeStaleEffects_l(); 5188 } 5189 return; 5190 } 5191 } 5192 LOGW("session id %d not found for pid %d", audioSession, caller); 5193} 5194 5195void AudioFlinger::purgeStaleEffects_l() { 5196 5197 ALOGV("purging stale effects"); 5198 5199 Vector< sp<EffectChain> > chains; 5200 5201 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5202 sp<PlaybackThread> t = mPlaybackThreads.valueAt(i); 5203 for (size_t j = 0; j < t->mEffectChains.size(); j++) { 5204 sp<EffectChain> ec = t->mEffectChains[j]; 5205 if (ec->sessionId() > AUDIO_SESSION_OUTPUT_MIX) { 5206 chains.push(ec); 5207 } 5208 } 5209 } 5210 for (size_t i = 0; i < mRecordThreads.size(); i++) { 5211 sp<RecordThread> t = mRecordThreads.valueAt(i); 5212 for (size_t j = 0; j < t->mEffectChains.size(); j++) { 5213 sp<EffectChain> ec = t->mEffectChains[j]; 5214 chains.push(ec); 5215 } 5216 } 5217 5218 for (size_t i = 0; i < chains.size(); i++) { 5219 sp<EffectChain> ec = chains[i]; 5220 int sessionid = ec->sessionId(); 5221 sp<ThreadBase> t = ec->mThread.promote(); 5222 if (t == 0) { 5223 continue; 5224 } 5225 size_t numsessionrefs = mAudioSessionRefs.size(); 5226 bool found = false; 5227 for (size_t k = 0; k < numsessionrefs; k++) { 5228 AudioSessionRef *ref = mAudioSessionRefs.itemAt(k); 5229 if (ref->sessionid == sessionid) { 5230 ALOGV(" session %d still exists for %d with %d refs", 5231 sessionid, ref->pid, ref->cnt); 5232 found = true; 5233 break; 5234 } 5235 } 5236 if (!found) { 5237 // remove all effects from the chain 5238 while (ec->mEffects.size()) { 5239 sp<EffectModule> effect = ec->mEffects[0]; 5240 effect->unPin(); 5241 Mutex::Autolock _l (t->mLock); 5242 t->removeEffect_l(effect); 5243 for (size_t j = 0; j < effect->mHandles.size(); j++) { 5244 sp<EffectHandle> handle = effect->mHandles[j].promote(); 5245 if (handle != 0) { 5246 handle->mEffect.clear(); 5247 if (handle->mHasControl && handle->mEnabled) { 5248 t->checkSuspendOnEffectEnabled_l(effect, false, effect->sessionId()); 5249 } 5250 } 5251 } 5252 AudioSystem::unregisterEffect(effect->id()); 5253 } 5254 } 5255 } 5256 return; 5257} 5258 5259// checkPlaybackThread_l() must be called with AudioFlinger::mLock held 5260AudioFlinger::PlaybackThread *AudioFlinger::checkPlaybackThread_l(int output) const 5261{ 5262 PlaybackThread *thread = NULL; 5263 if (mPlaybackThreads.indexOfKey(output) >= 0) { 5264 thread = (PlaybackThread *)mPlaybackThreads.valueFor(output).get(); 5265 } 5266 return thread; 5267} 5268 5269// checkMixerThread_l() must be called with AudioFlinger::mLock held 5270AudioFlinger::MixerThread *AudioFlinger::checkMixerThread_l(int output) const 5271{ 5272 PlaybackThread *thread = checkPlaybackThread_l(output); 5273 if (thread != NULL) { 5274 if (thread->type() == ThreadBase::DIRECT) { 5275 thread = NULL; 5276 } 5277 } 5278 return (MixerThread *)thread; 5279} 5280 5281// checkRecordThread_l() must be called with AudioFlinger::mLock held 5282AudioFlinger::RecordThread *AudioFlinger::checkRecordThread_l(int input) const 5283{ 5284 RecordThread *thread = NULL; 5285 if (mRecordThreads.indexOfKey(input) >= 0) { 5286 thread = (RecordThread *)mRecordThreads.valueFor(input).get(); 5287 } 5288 return thread; 5289} 5290 5291uint32_t AudioFlinger::nextUniqueId() 5292{ 5293 return android_atomic_inc(&mNextUniqueId); 5294} 5295 5296AudioFlinger::PlaybackThread *AudioFlinger::primaryPlaybackThread_l() 5297{ 5298 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5299 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 5300 AudioStreamOut *output = thread->getOutput(); 5301 if (output != NULL && output->hwDev == mPrimaryHardwareDev) { 5302 return thread; 5303 } 5304 } 5305 return NULL; 5306} 5307 5308uint32_t AudioFlinger::primaryOutputDevice_l() 5309{ 5310 PlaybackThread *thread = primaryPlaybackThread_l(); 5311 5312 if (thread == NULL) { 5313 return 0; 5314 } 5315 5316 return thread->device(); 5317} 5318 5319 5320// ---------------------------------------------------------------------------- 5321// Effect management 5322// ---------------------------------------------------------------------------- 5323 5324 5325status_t AudioFlinger::queryNumberEffects(uint32_t *numEffects) 5326{ 5327 Mutex::Autolock _l(mLock); 5328 return EffectQueryNumberEffects(numEffects); 5329} 5330 5331status_t AudioFlinger::queryEffect(uint32_t index, effect_descriptor_t *descriptor) 5332{ 5333 Mutex::Autolock _l(mLock); 5334 return EffectQueryEffect(index, descriptor); 5335} 5336 5337status_t AudioFlinger::getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor) 5338{ 5339 Mutex::Autolock _l(mLock); 5340 return EffectGetDescriptor(pUuid, descriptor); 5341} 5342 5343 5344sp<IEffect> AudioFlinger::createEffect(pid_t pid, 5345 effect_descriptor_t *pDesc, 5346 const sp<IEffectClient>& effectClient, 5347 int32_t priority, 5348 int io, 5349 int sessionId, 5350 status_t *status, 5351 int *id, 5352 int *enabled) 5353{ 5354 status_t lStatus = NO_ERROR; 5355 sp<EffectHandle> handle; 5356 effect_descriptor_t desc; 5357 sp<Client> client; 5358 wp<Client> wclient; 5359 5360 ALOGV("createEffect pid %d, client %p, priority %d, sessionId %d, io %d", 5361 pid, effectClient.get(), priority, sessionId, io); 5362 5363 if (pDesc == NULL) { 5364 lStatus = BAD_VALUE; 5365 goto Exit; 5366 } 5367 5368 // check audio settings permission for global effects 5369 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && !settingsAllowed()) { 5370 lStatus = PERMISSION_DENIED; 5371 goto Exit; 5372 } 5373 5374 // Session AUDIO_SESSION_OUTPUT_STAGE is reserved for output stage effects 5375 // that can only be created by audio policy manager (running in same process) 5376 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE && getpid() != pid) { 5377 lStatus = PERMISSION_DENIED; 5378 goto Exit; 5379 } 5380 5381 if (io == 0) { 5382 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE) { 5383 // output must be specified by AudioPolicyManager when using session 5384 // AUDIO_SESSION_OUTPUT_STAGE 5385 lStatus = BAD_VALUE; 5386 goto Exit; 5387 } else if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 5388 // if the output returned by getOutputForEffect() is removed before we lock the 5389 // mutex below, the call to checkPlaybackThread_l(io) below will detect it 5390 // and we will exit safely 5391 io = AudioSystem::getOutputForEffect(&desc); 5392 } 5393 } 5394 5395 { 5396 Mutex::Autolock _l(mLock); 5397 5398 5399 if (!EffectIsNullUuid(&pDesc->uuid)) { 5400 // if uuid is specified, request effect descriptor 5401 lStatus = EffectGetDescriptor(&pDesc->uuid, &desc); 5402 if (lStatus < 0) { 5403 LOGW("createEffect() error %d from EffectGetDescriptor", lStatus); 5404 goto Exit; 5405 } 5406 } else { 5407 // if uuid is not specified, look for an available implementation 5408 // of the required type in effect factory 5409 if (EffectIsNullUuid(&pDesc->type)) { 5410 LOGW("createEffect() no effect type"); 5411 lStatus = BAD_VALUE; 5412 goto Exit; 5413 } 5414 uint32_t numEffects = 0; 5415 effect_descriptor_t d; 5416 d.flags = 0; // prevent compiler warning 5417 bool found = false; 5418 5419 lStatus = EffectQueryNumberEffects(&numEffects); 5420 if (lStatus < 0) { 5421 LOGW("createEffect() error %d from EffectQueryNumberEffects", lStatus); 5422 goto Exit; 5423 } 5424 for (uint32_t i = 0; i < numEffects; i++) { 5425 lStatus = EffectQueryEffect(i, &desc); 5426 if (lStatus < 0) { 5427 LOGW("createEffect() error %d from EffectQueryEffect", lStatus); 5428 continue; 5429 } 5430 if (memcmp(&desc.type, &pDesc->type, sizeof(effect_uuid_t)) == 0) { 5431 // If matching type found save effect descriptor. If the session is 5432 // 0 and the effect is not auxiliary, continue enumeration in case 5433 // an auxiliary version of this effect type is available 5434 found = true; 5435 memcpy(&d, &desc, sizeof(effect_descriptor_t)); 5436 if (sessionId != AUDIO_SESSION_OUTPUT_MIX || 5437 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5438 break; 5439 } 5440 } 5441 } 5442 if (!found) { 5443 lStatus = BAD_VALUE; 5444 LOGW("createEffect() effect not found"); 5445 goto Exit; 5446 } 5447 // For same effect type, chose auxiliary version over insert version if 5448 // connect to output mix (Compliance to OpenSL ES) 5449 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && 5450 (d.flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_AUXILIARY) { 5451 memcpy(&desc, &d, sizeof(effect_descriptor_t)); 5452 } 5453 } 5454 5455 // Do not allow auxiliary effects on a session different from 0 (output mix) 5456 if (sessionId != AUDIO_SESSION_OUTPUT_MIX && 5457 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5458 lStatus = INVALID_OPERATION; 5459 goto Exit; 5460 } 5461 5462 // check recording permission for visualizer 5463 if ((memcmp(&desc.type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0) && 5464 !recordingAllowed()) { 5465 lStatus = PERMISSION_DENIED; 5466 goto Exit; 5467 } 5468 5469 // return effect descriptor 5470 memcpy(pDesc, &desc, sizeof(effect_descriptor_t)); 5471 5472 // If output is not specified try to find a matching audio session ID in one of the 5473 // output threads. 5474 // If output is 0 here, sessionId is neither SESSION_OUTPUT_STAGE nor SESSION_OUTPUT_MIX 5475 // because of code checking output when entering the function. 5476 // Note: io is never 0 when creating an effect on an input 5477 if (io == 0) { 5478 // look for the thread where the specified audio session is present 5479 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 5480 if (mPlaybackThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 5481 io = mPlaybackThreads.keyAt(i); 5482 break; 5483 } 5484 } 5485 if (io == 0) { 5486 for (size_t i = 0; i < mRecordThreads.size(); i++) { 5487 if (mRecordThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 5488 io = mRecordThreads.keyAt(i); 5489 break; 5490 } 5491 } 5492 } 5493 // If no output thread contains the requested session ID, default to 5494 // first output. The effect chain will be moved to the correct output 5495 // thread when a track with the same session ID is created 5496 if (io == 0 && mPlaybackThreads.size()) { 5497 io = mPlaybackThreads.keyAt(0); 5498 } 5499 ALOGV("createEffect() got io %d for effect %s", io, desc.name); 5500 } 5501 ThreadBase *thread = checkRecordThread_l(io); 5502 if (thread == NULL) { 5503 thread = checkPlaybackThread_l(io); 5504 if (thread == NULL) { 5505 LOGE("createEffect() unknown output thread"); 5506 lStatus = BAD_VALUE; 5507 goto Exit; 5508 } 5509 } 5510 5511 wclient = mClients.valueFor(pid); 5512 5513 if (wclient != NULL) { 5514 client = wclient.promote(); 5515 } else { 5516 client = new Client(this, pid); 5517 mClients.add(pid, client); 5518 } 5519 5520 // create effect on selected output thread 5521 handle = thread->createEffect_l(client, effectClient, priority, sessionId, 5522 &desc, enabled, &lStatus); 5523 if (handle != 0 && id != NULL) { 5524 *id = handle->id(); 5525 } 5526 } 5527 5528Exit: 5529 if(status) { 5530 *status = lStatus; 5531 } 5532 return handle; 5533} 5534 5535status_t AudioFlinger::moveEffects(int sessionId, int srcOutput, int dstOutput) 5536{ 5537 ALOGV("moveEffects() session %d, srcOutput %d, dstOutput %d", 5538 sessionId, srcOutput, dstOutput); 5539 Mutex::Autolock _l(mLock); 5540 if (srcOutput == dstOutput) { 5541 LOGW("moveEffects() same dst and src outputs %d", dstOutput); 5542 return NO_ERROR; 5543 } 5544 PlaybackThread *srcThread = checkPlaybackThread_l(srcOutput); 5545 if (srcThread == NULL) { 5546 LOGW("moveEffects() bad srcOutput %d", srcOutput); 5547 return BAD_VALUE; 5548 } 5549 PlaybackThread *dstThread = checkPlaybackThread_l(dstOutput); 5550 if (dstThread == NULL) { 5551 LOGW("moveEffects() bad dstOutput %d", dstOutput); 5552 return BAD_VALUE; 5553 } 5554 5555 Mutex::Autolock _dl(dstThread->mLock); 5556 Mutex::Autolock _sl(srcThread->mLock); 5557 moveEffectChain_l(sessionId, srcThread, dstThread, false); 5558 5559 return NO_ERROR; 5560} 5561 5562// moveEffectChain_l must be called with both srcThread and dstThread mLocks held 5563status_t AudioFlinger::moveEffectChain_l(int sessionId, 5564 AudioFlinger::PlaybackThread *srcThread, 5565 AudioFlinger::PlaybackThread *dstThread, 5566 bool reRegister) 5567{ 5568 ALOGV("moveEffectChain_l() session %d from thread %p to thread %p", 5569 sessionId, srcThread, dstThread); 5570 5571 sp<EffectChain> chain = srcThread->getEffectChain_l(sessionId); 5572 if (chain == 0) { 5573 LOGW("moveEffectChain_l() effect chain for session %d not on source thread %p", 5574 sessionId, srcThread); 5575 return INVALID_OPERATION; 5576 } 5577 5578 // remove chain first. This is useful only if reconfiguring effect chain on same output thread, 5579 // so that a new chain is created with correct parameters when first effect is added. This is 5580 // otherwise unnecessary as removeEffect_l() will remove the chain when last effect is 5581 // removed. 5582 srcThread->removeEffectChain_l(chain); 5583 5584 // transfer all effects one by one so that new effect chain is created on new thread with 5585 // correct buffer sizes and audio parameters and effect engines reconfigured accordingly 5586 int dstOutput = dstThread->id(); 5587 sp<EffectChain> dstChain; 5588 uint32_t strategy = 0; // prevent compiler warning 5589 sp<EffectModule> effect = chain->getEffectFromId_l(0); 5590 while (effect != 0) { 5591 srcThread->removeEffect_l(effect); 5592 dstThread->addEffect_l(effect); 5593 // removeEffect_l() has stopped the effect if it was active so it must be restarted 5594 if (effect->state() == EffectModule::ACTIVE || 5595 effect->state() == EffectModule::STOPPING) { 5596 effect->start(); 5597 } 5598 // if the move request is not received from audio policy manager, the effect must be 5599 // re-registered with the new strategy and output 5600 if (dstChain == 0) { 5601 dstChain = effect->chain().promote(); 5602 if (dstChain == 0) { 5603 LOGW("moveEffectChain_l() cannot get chain from effect %p", effect.get()); 5604 srcThread->addEffect_l(effect); 5605 return NO_INIT; 5606 } 5607 strategy = dstChain->strategy(); 5608 } 5609 if (reRegister) { 5610 AudioSystem::unregisterEffect(effect->id()); 5611 AudioSystem::registerEffect(&effect->desc(), 5612 dstOutput, 5613 strategy, 5614 sessionId, 5615 effect->id()); 5616 } 5617 effect = chain->getEffectFromId_l(0); 5618 } 5619 5620 return NO_ERROR; 5621} 5622 5623 5624// PlaybackThread::createEffect_l() must be called with AudioFlinger::mLock held 5625sp<AudioFlinger::EffectHandle> AudioFlinger::ThreadBase::createEffect_l( 5626 const sp<AudioFlinger::Client>& client, 5627 const sp<IEffectClient>& effectClient, 5628 int32_t priority, 5629 int sessionId, 5630 effect_descriptor_t *desc, 5631 int *enabled, 5632 status_t *status 5633 ) 5634{ 5635 sp<EffectModule> effect; 5636 sp<EffectHandle> handle; 5637 status_t lStatus; 5638 sp<EffectChain> chain; 5639 bool chainCreated = false; 5640 bool effectCreated = false; 5641 bool effectRegistered = false; 5642 5643 lStatus = initCheck(); 5644 if (lStatus != NO_ERROR) { 5645 LOGW("createEffect_l() Audio driver not initialized."); 5646 goto Exit; 5647 } 5648 5649 // Do not allow effects with session ID 0 on direct output or duplicating threads 5650 // TODO: add rule for hw accelerated effects on direct outputs with non PCM format 5651 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && mType != MIXER) { 5652 LOGW("createEffect_l() Cannot add auxiliary effect %s to session %d", 5653 desc->name, sessionId); 5654 lStatus = BAD_VALUE; 5655 goto Exit; 5656 } 5657 // Only Pre processor effects are allowed on input threads and only on input threads 5658 if ((mType == RECORD && 5659 (desc->flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_PRE_PROC) || 5660 (mType != RECORD && 5661 (desc->flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC)) { 5662 LOGW("createEffect_l() effect %s (flags %08x) created on wrong thread type %d", 5663 desc->name, desc->flags, mType); 5664 lStatus = BAD_VALUE; 5665 goto Exit; 5666 } 5667 5668 ALOGV("createEffect_l() thread %p effect %s on session %d", this, desc->name, sessionId); 5669 5670 { // scope for mLock 5671 Mutex::Autolock _l(mLock); 5672 5673 // check for existing effect chain with the requested audio session 5674 chain = getEffectChain_l(sessionId); 5675 if (chain == 0) { 5676 // create a new chain for this session 5677 ALOGV("createEffect_l() new effect chain for session %d", sessionId); 5678 chain = new EffectChain(this, sessionId); 5679 addEffectChain_l(chain); 5680 chain->setStrategy(getStrategyForSession_l(sessionId)); 5681 chainCreated = true; 5682 } else { 5683 effect = chain->getEffectFromDesc_l(desc); 5684 } 5685 5686 ALOGV("createEffect_l() got effect %p on chain %p", effect == 0 ? 0 : effect.get(), chain.get()); 5687 5688 if (effect == 0) { 5689 int id = mAudioFlinger->nextUniqueId(); 5690 // Check CPU and memory usage 5691 lStatus = AudioSystem::registerEffect(desc, mId, chain->strategy(), sessionId, id); 5692 if (lStatus != NO_ERROR) { 5693 goto Exit; 5694 } 5695 effectRegistered = true; 5696 // create a new effect module if none present in the chain 5697 effect = new EffectModule(this, chain, desc, id, sessionId); 5698 lStatus = effect->status(); 5699 if (lStatus != NO_ERROR) { 5700 goto Exit; 5701 } 5702 lStatus = chain->addEffect_l(effect); 5703 if (lStatus != NO_ERROR) { 5704 goto Exit; 5705 } 5706 effectCreated = true; 5707 5708 effect->setDevice(mDevice); 5709 effect->setMode(mAudioFlinger->getMode()); 5710 } 5711 // create effect handle and connect it to effect module 5712 handle = new EffectHandle(effect, client, effectClient, priority); 5713 lStatus = effect->addHandle(handle); 5714 if (enabled) { 5715 *enabled = (int)effect->isEnabled(); 5716 } 5717 } 5718 5719Exit: 5720 if (lStatus != NO_ERROR && lStatus != ALREADY_EXISTS) { 5721 Mutex::Autolock _l(mLock); 5722 if (effectCreated) { 5723 chain->removeEffect_l(effect); 5724 } 5725 if (effectRegistered) { 5726 AudioSystem::unregisterEffect(effect->id()); 5727 } 5728 if (chainCreated) { 5729 removeEffectChain_l(chain); 5730 } 5731 handle.clear(); 5732 } 5733 5734 if(status) { 5735 *status = lStatus; 5736 } 5737 return handle; 5738} 5739 5740sp<AudioFlinger::EffectModule> AudioFlinger::ThreadBase::getEffect_l(int sessionId, int effectId) 5741{ 5742 sp<EffectModule> effect; 5743 5744 sp<EffectChain> chain = getEffectChain_l(sessionId); 5745 if (chain != 0) { 5746 effect = chain->getEffectFromId_l(effectId); 5747 } 5748 return effect; 5749} 5750 5751// PlaybackThread::addEffect_l() must be called with AudioFlinger::mLock and 5752// PlaybackThread::mLock held 5753status_t AudioFlinger::ThreadBase::addEffect_l(const sp<EffectModule>& effect) 5754{ 5755 // check for existing effect chain with the requested audio session 5756 int sessionId = effect->sessionId(); 5757 sp<EffectChain> chain = getEffectChain_l(sessionId); 5758 bool chainCreated = false; 5759 5760 if (chain == 0) { 5761 // create a new chain for this session 5762 ALOGV("addEffect_l() new effect chain for session %d", sessionId); 5763 chain = new EffectChain(this, sessionId); 5764 addEffectChain_l(chain); 5765 chain->setStrategy(getStrategyForSession_l(sessionId)); 5766 chainCreated = true; 5767 } 5768 ALOGV("addEffect_l() %p chain %p effect %p", this, chain.get(), effect.get()); 5769 5770 if (chain->getEffectFromId_l(effect->id()) != 0) { 5771 LOGW("addEffect_l() %p effect %s already present in chain %p", 5772 this, effect->desc().name, chain.get()); 5773 return BAD_VALUE; 5774 } 5775 5776 status_t status = chain->addEffect_l(effect); 5777 if (status != NO_ERROR) { 5778 if (chainCreated) { 5779 removeEffectChain_l(chain); 5780 } 5781 return status; 5782 } 5783 5784 effect->setDevice(mDevice); 5785 effect->setMode(mAudioFlinger->getMode()); 5786 return NO_ERROR; 5787} 5788 5789void AudioFlinger::ThreadBase::removeEffect_l(const sp<EffectModule>& effect) { 5790 5791 ALOGV("removeEffect_l() %p effect %p", this, effect.get()); 5792 effect_descriptor_t desc = effect->desc(); 5793 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5794 detachAuxEffect_l(effect->id()); 5795 } 5796 5797 sp<EffectChain> chain = effect->chain().promote(); 5798 if (chain != 0) { 5799 // remove effect chain if removing last effect 5800 if (chain->removeEffect_l(effect) == 0) { 5801 removeEffectChain_l(chain); 5802 } 5803 } else { 5804 LOGW("removeEffect_l() %p cannot promote chain for effect %p", this, effect.get()); 5805 } 5806} 5807 5808void AudioFlinger::ThreadBase::lockEffectChains_l( 5809 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5810{ 5811 effectChains = mEffectChains; 5812 for (size_t i = 0; i < mEffectChains.size(); i++) { 5813 mEffectChains[i]->lock(); 5814 } 5815} 5816 5817void AudioFlinger::ThreadBase::unlockEffectChains( 5818 Vector<sp <AudioFlinger::EffectChain> >& effectChains) 5819{ 5820 for (size_t i = 0; i < effectChains.size(); i++) { 5821 effectChains[i]->unlock(); 5822 } 5823} 5824 5825sp<AudioFlinger::EffectChain> AudioFlinger::ThreadBase::getEffectChain(int sessionId) 5826{ 5827 Mutex::Autolock _l(mLock); 5828 return getEffectChain_l(sessionId); 5829} 5830 5831sp<AudioFlinger::EffectChain> AudioFlinger::ThreadBase::getEffectChain_l(int sessionId) 5832{ 5833 sp<EffectChain> chain; 5834 5835 size_t size = mEffectChains.size(); 5836 for (size_t i = 0; i < size; i++) { 5837 if (mEffectChains[i]->sessionId() == sessionId) { 5838 chain = mEffectChains[i]; 5839 break; 5840 } 5841 } 5842 return chain; 5843} 5844 5845void AudioFlinger::ThreadBase::setMode(uint32_t mode) 5846{ 5847 Mutex::Autolock _l(mLock); 5848 size_t size = mEffectChains.size(); 5849 for (size_t i = 0; i < size; i++) { 5850 mEffectChains[i]->setMode_l(mode); 5851 } 5852} 5853 5854void AudioFlinger::ThreadBase::disconnectEffect(const sp<EffectModule>& effect, 5855 const wp<EffectHandle>& handle, 5856 bool unpiniflast) { 5857 5858 Mutex::Autolock _l(mLock); 5859 ALOGV("disconnectEffect() %p effect %p", this, effect.get()); 5860 // delete the effect module if removing last handle on it 5861 if (effect->removeHandle(handle) == 0) { 5862 if (!effect->isPinned() || unpiniflast) { 5863 removeEffect_l(effect); 5864 AudioSystem::unregisterEffect(effect->id()); 5865 } 5866 } 5867} 5868 5869status_t AudioFlinger::PlaybackThread::addEffectChain_l(const sp<EffectChain>& chain) 5870{ 5871 int session = chain->sessionId(); 5872 int16_t *buffer = mMixBuffer; 5873 bool ownsBuffer = false; 5874 5875 ALOGV("addEffectChain_l() %p on thread %p for session %d", chain.get(), this, session); 5876 if (session > 0) { 5877 // Only one effect chain can be present in direct output thread and it uses 5878 // the mix buffer as input 5879 if (mType != DIRECT) { 5880 size_t numSamples = mFrameCount * mChannelCount; 5881 buffer = new int16_t[numSamples]; 5882 memset(buffer, 0, numSamples * sizeof(int16_t)); 5883 ALOGV("addEffectChain_l() creating new input buffer %p session %d", buffer, session); 5884 ownsBuffer = true; 5885 } 5886 5887 // Attach all tracks with same session ID to this chain. 5888 for (size_t i = 0; i < mTracks.size(); ++i) { 5889 sp<Track> track = mTracks[i]; 5890 if (session == track->sessionId()) { 5891 ALOGV("addEffectChain_l() track->setMainBuffer track %p buffer %p", track.get(), buffer); 5892 track->setMainBuffer(buffer); 5893 chain->incTrackCnt(); 5894 } 5895 } 5896 5897 // indicate all active tracks in the chain 5898 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5899 sp<Track> track = mActiveTracks[i].promote(); 5900 if (track == 0) continue; 5901 if (session == track->sessionId()) { 5902 ALOGV("addEffectChain_l() activating track %p on session %d", track.get(), session); 5903 chain->incActiveTrackCnt(); 5904 } 5905 } 5906 } 5907 5908 chain->setInBuffer(buffer, ownsBuffer); 5909 chain->setOutBuffer(mMixBuffer); 5910 // Effect chain for session AUDIO_SESSION_OUTPUT_STAGE is inserted at end of effect 5911 // chains list in order to be processed last as it contains output stage effects 5912 // Effect chain for session AUDIO_SESSION_OUTPUT_MIX is inserted before 5913 // session AUDIO_SESSION_OUTPUT_STAGE to be processed 5914 // after track specific effects and before output stage 5915 // It is therefore mandatory that AUDIO_SESSION_OUTPUT_MIX == 0 and 5916 // that AUDIO_SESSION_OUTPUT_STAGE < AUDIO_SESSION_OUTPUT_MIX 5917 // Effect chain for other sessions are inserted at beginning of effect 5918 // chains list to be processed before output mix effects. Relative order between other 5919 // sessions is not important 5920 size_t size = mEffectChains.size(); 5921 size_t i = 0; 5922 for (i = 0; i < size; i++) { 5923 if (mEffectChains[i]->sessionId() < session) break; 5924 } 5925 mEffectChains.insertAt(chain, i); 5926 checkSuspendOnAddEffectChain_l(chain); 5927 5928 return NO_ERROR; 5929} 5930 5931size_t AudioFlinger::PlaybackThread::removeEffectChain_l(const sp<EffectChain>& chain) 5932{ 5933 int session = chain->sessionId(); 5934 5935 ALOGV("removeEffectChain_l() %p from thread %p for session %d", chain.get(), this, session); 5936 5937 for (size_t i = 0; i < mEffectChains.size(); i++) { 5938 if (chain == mEffectChains[i]) { 5939 mEffectChains.removeAt(i); 5940 // detach all active tracks from the chain 5941 for (size_t i = 0 ; i < mActiveTracks.size() ; ++i) { 5942 sp<Track> track = mActiveTracks[i].promote(); 5943 if (track == 0) continue; 5944 if (session == track->sessionId()) { 5945 ALOGV("removeEffectChain_l(): stopping track on chain %p for session Id: %d", 5946 chain.get(), session); 5947 chain->decActiveTrackCnt(); 5948 } 5949 } 5950 5951 // detach all tracks with same session ID from this chain 5952 for (size_t i = 0; i < mTracks.size(); ++i) { 5953 sp<Track> track = mTracks[i]; 5954 if (session == track->sessionId()) { 5955 track->setMainBuffer(mMixBuffer); 5956 chain->decTrackCnt(); 5957 } 5958 } 5959 break; 5960 } 5961 } 5962 return mEffectChains.size(); 5963} 5964 5965status_t AudioFlinger::PlaybackThread::attachAuxEffect( 5966 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5967{ 5968 Mutex::Autolock _l(mLock); 5969 return attachAuxEffect_l(track, EffectId); 5970} 5971 5972status_t AudioFlinger::PlaybackThread::attachAuxEffect_l( 5973 const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId) 5974{ 5975 status_t status = NO_ERROR; 5976 5977 if (EffectId == 0) { 5978 track->setAuxBuffer(0, NULL); 5979 } else { 5980 // Auxiliary effects are always in audio session AUDIO_SESSION_OUTPUT_MIX 5981 sp<EffectModule> effect = getEffect_l(AUDIO_SESSION_OUTPUT_MIX, EffectId); 5982 if (effect != 0) { 5983 if ((effect->desc().flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 5984 track->setAuxBuffer(EffectId, (int32_t *)effect->inBuffer()); 5985 } else { 5986 status = INVALID_OPERATION; 5987 } 5988 } else { 5989 status = BAD_VALUE; 5990 } 5991 } 5992 return status; 5993} 5994 5995void AudioFlinger::PlaybackThread::detachAuxEffect_l(int effectId) 5996{ 5997 for (size_t i = 0; i < mTracks.size(); ++i) { 5998 sp<Track> track = mTracks[i]; 5999 if (track->auxEffectId() == effectId) { 6000 attachAuxEffect_l(track, 0); 6001 } 6002 } 6003} 6004 6005status_t AudioFlinger::RecordThread::addEffectChain_l(const sp<EffectChain>& chain) 6006{ 6007 // only one chain per input thread 6008 if (mEffectChains.size() != 0) { 6009 return INVALID_OPERATION; 6010 } 6011 ALOGV("addEffectChain_l() %p on thread %p", chain.get(), this); 6012 6013 chain->setInBuffer(NULL); 6014 chain->setOutBuffer(NULL); 6015 6016 checkSuspendOnAddEffectChain_l(chain); 6017 6018 mEffectChains.add(chain); 6019 6020 return NO_ERROR; 6021} 6022 6023size_t AudioFlinger::RecordThread::removeEffectChain_l(const sp<EffectChain>& chain) 6024{ 6025 ALOGV("removeEffectChain_l() %p from thread %p", chain.get(), this); 6026 LOGW_IF(mEffectChains.size() != 1, 6027 "removeEffectChain_l() %p invalid chain size %d on thread %p", 6028 chain.get(), mEffectChains.size(), this); 6029 if (mEffectChains.size() == 1) { 6030 mEffectChains.removeAt(0); 6031 } 6032 return 0; 6033} 6034 6035// ---------------------------------------------------------------------------- 6036// EffectModule implementation 6037// ---------------------------------------------------------------------------- 6038 6039#undef LOG_TAG 6040#define LOG_TAG "AudioFlinger::EffectModule" 6041 6042AudioFlinger::EffectModule::EffectModule(const wp<ThreadBase>& wThread, 6043 const wp<AudioFlinger::EffectChain>& chain, 6044 effect_descriptor_t *desc, 6045 int id, 6046 int sessionId) 6047 : mThread(wThread), mChain(chain), mId(id), mSessionId(sessionId), mEffectInterface(NULL), 6048 mStatus(NO_INIT), mState(IDLE), mSuspended(false) 6049{ 6050 ALOGV("Constructor %p", this); 6051 int lStatus; 6052 sp<ThreadBase> thread = mThread.promote(); 6053 if (thread == 0) { 6054 return; 6055 } 6056 6057 memcpy(&mDescriptor, desc, sizeof(effect_descriptor_t)); 6058 6059 // create effect engine from effect factory 6060 mStatus = EffectCreate(&desc->uuid, sessionId, thread->id(), &mEffectInterface); 6061 6062 if (mStatus != NO_ERROR) { 6063 return; 6064 } 6065 lStatus = init(); 6066 if (lStatus < 0) { 6067 mStatus = lStatus; 6068 goto Error; 6069 } 6070 6071 if (mSessionId > AUDIO_SESSION_OUTPUT_MIX) { 6072 mPinned = true; 6073 } 6074 ALOGV("Constructor success name %s, Interface %p", mDescriptor.name, mEffectInterface); 6075 return; 6076Error: 6077 EffectRelease(mEffectInterface); 6078 mEffectInterface = NULL; 6079 ALOGV("Constructor Error %d", mStatus); 6080} 6081 6082AudioFlinger::EffectModule::~EffectModule() 6083{ 6084 ALOGV("Destructor %p", this); 6085 if (mEffectInterface != NULL) { 6086 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 6087 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC) { 6088 sp<ThreadBase> thread = mThread.promote(); 6089 if (thread != 0) { 6090 audio_stream_t *stream = thread->stream(); 6091 if (stream != NULL) { 6092 stream->remove_audio_effect(stream, mEffectInterface); 6093 } 6094 } 6095 } 6096 // release effect engine 6097 EffectRelease(mEffectInterface); 6098 } 6099} 6100 6101status_t AudioFlinger::EffectModule::addHandle(sp<EffectHandle>& handle) 6102{ 6103 status_t status; 6104 6105 Mutex::Autolock _l(mLock); 6106 // First handle in mHandles has highest priority and controls the effect module 6107 int priority = handle->priority(); 6108 size_t size = mHandles.size(); 6109 sp<EffectHandle> h; 6110 size_t i; 6111 for (i = 0; i < size; i++) { 6112 h = mHandles[i].promote(); 6113 if (h == 0) continue; 6114 if (h->priority() <= priority) break; 6115 } 6116 // if inserted in first place, move effect control from previous owner to this handle 6117 if (i == 0) { 6118 bool enabled = false; 6119 if (h != 0) { 6120 enabled = h->enabled(); 6121 h->setControl(false/*hasControl*/, true /*signal*/, enabled /*enabled*/); 6122 } 6123 handle->setControl(true /*hasControl*/, false /*signal*/, enabled /*enabled*/); 6124 status = NO_ERROR; 6125 } else { 6126 status = ALREADY_EXISTS; 6127 } 6128 ALOGV("addHandle() %p added handle %p in position %d", this, handle.get(), i); 6129 mHandles.insertAt(handle, i); 6130 return status; 6131} 6132 6133size_t AudioFlinger::EffectModule::removeHandle(const wp<EffectHandle>& handle) 6134{ 6135 Mutex::Autolock _l(mLock); 6136 size_t size = mHandles.size(); 6137 size_t i; 6138 for (i = 0; i < size; i++) { 6139 if (mHandles[i] == handle) break; 6140 } 6141 if (i == size) { 6142 return size; 6143 } 6144 ALOGV("removeHandle() %p removed handle %p in position %d", this, handle.unsafe_get(), i); 6145 6146 bool enabled = false; 6147 EffectHandle *hdl = handle.unsafe_get(); 6148 if (hdl) { 6149 ALOGV("removeHandle() unsafe_get OK"); 6150 enabled = hdl->enabled(); 6151 } 6152 mHandles.removeAt(i); 6153 size = mHandles.size(); 6154 // if removed from first place, move effect control from this handle to next in line 6155 if (i == 0 && size != 0) { 6156 sp<EffectHandle> h = mHandles[0].promote(); 6157 if (h != 0) { 6158 h->setControl(true /*hasControl*/, true /*signal*/ , enabled /*enabled*/); 6159 } 6160 } 6161 6162 // Prevent calls to process() and other functions on effect interface from now on. 6163 // The effect engine will be released by the destructor when the last strong reference on 6164 // this object is released which can happen after next process is called. 6165 if (size == 0 && !mPinned) { 6166 mState = DESTROYED; 6167 } 6168 6169 return size; 6170} 6171 6172sp<AudioFlinger::EffectHandle> AudioFlinger::EffectModule::controlHandle() 6173{ 6174 Mutex::Autolock _l(mLock); 6175 sp<EffectHandle> handle; 6176 if (mHandles.size() != 0) { 6177 handle = mHandles[0].promote(); 6178 } 6179 return handle; 6180} 6181 6182void AudioFlinger::EffectModule::disconnect(const wp<EffectHandle>& handle, bool unpiniflast) 6183{ 6184 ALOGV("disconnect() %p handle %p ", this, handle.unsafe_get()); 6185 // keep a strong reference on this EffectModule to avoid calling the 6186 // destructor before we exit 6187 sp<EffectModule> keep(this); 6188 { 6189 sp<ThreadBase> thread = mThread.promote(); 6190 if (thread != 0) { 6191 thread->disconnectEffect(keep, handle, unpiniflast); 6192 } 6193 } 6194} 6195 6196void AudioFlinger::EffectModule::updateState() { 6197 Mutex::Autolock _l(mLock); 6198 6199 switch (mState) { 6200 case RESTART: 6201 reset_l(); 6202 // FALL THROUGH 6203 6204 case STARTING: 6205 // clear auxiliary effect input buffer for next accumulation 6206 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6207 memset(mConfig.inputCfg.buffer.raw, 6208 0, 6209 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 6210 } 6211 start_l(); 6212 mState = ACTIVE; 6213 break; 6214 case STOPPING: 6215 stop_l(); 6216 mDisableWaitCnt = mMaxDisableWaitCnt; 6217 mState = STOPPED; 6218 break; 6219 case STOPPED: 6220 // mDisableWaitCnt is forced to 1 by process() when the engine indicates the end of the 6221 // turn off sequence. 6222 if (--mDisableWaitCnt == 0) { 6223 reset_l(); 6224 mState = IDLE; 6225 } 6226 break; 6227 default: //IDLE , ACTIVE, DESTROYED 6228 break; 6229 } 6230} 6231 6232void AudioFlinger::EffectModule::process() 6233{ 6234 Mutex::Autolock _l(mLock); 6235 6236 if (mState == DESTROYED || mEffectInterface == NULL || 6237 mConfig.inputCfg.buffer.raw == NULL || 6238 mConfig.outputCfg.buffer.raw == NULL) { 6239 return; 6240 } 6241 6242 if (isProcessEnabled()) { 6243 // do 32 bit to 16 bit conversion for auxiliary effect input buffer 6244 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6245 AudioMixer::ditherAndClamp(mConfig.inputCfg.buffer.s32, 6246 mConfig.inputCfg.buffer.s32, 6247 mConfig.inputCfg.buffer.frameCount/2); 6248 } 6249 6250 // do the actual processing in the effect engine 6251 int ret = (*mEffectInterface)->process(mEffectInterface, 6252 &mConfig.inputCfg.buffer, 6253 &mConfig.outputCfg.buffer); 6254 6255 // force transition to IDLE state when engine is ready 6256 if (mState == STOPPED && ret == -ENODATA) { 6257 mDisableWaitCnt = 1; 6258 } 6259 6260 // clear auxiliary effect input buffer for next accumulation 6261 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6262 memset(mConfig.inputCfg.buffer.raw, 0, 6263 mConfig.inputCfg.buffer.frameCount*sizeof(int32_t)); 6264 } 6265 } else if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_INSERT && 6266 mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 6267 // If an insert effect is idle and input buffer is different from output buffer, 6268 // accumulate input onto output 6269 sp<EffectChain> chain = mChain.promote(); 6270 if (chain != 0 && chain->activeTrackCnt() != 0) { 6271 size_t frameCnt = mConfig.inputCfg.buffer.frameCount * 2; //always stereo here 6272 int16_t *in = mConfig.inputCfg.buffer.s16; 6273 int16_t *out = mConfig.outputCfg.buffer.s16; 6274 for (size_t i = 0; i < frameCnt; i++) { 6275 out[i] = clamp16((int32_t)out[i] + (int32_t)in[i]); 6276 } 6277 } 6278 } 6279} 6280 6281void AudioFlinger::EffectModule::reset_l() 6282{ 6283 if (mEffectInterface == NULL) { 6284 return; 6285 } 6286 (*mEffectInterface)->command(mEffectInterface, EFFECT_CMD_RESET, 0, NULL, 0, NULL); 6287} 6288 6289status_t AudioFlinger::EffectModule::configure() 6290{ 6291 uint32_t channels; 6292 if (mEffectInterface == NULL) { 6293 return NO_INIT; 6294 } 6295 6296 sp<ThreadBase> thread = mThread.promote(); 6297 if (thread == 0) { 6298 return DEAD_OBJECT; 6299 } 6300 6301 // TODO: handle configuration of effects replacing track process 6302 if (thread->channelCount() == 1) { 6303 channels = AUDIO_CHANNEL_OUT_MONO; 6304 } else { 6305 channels = AUDIO_CHANNEL_OUT_STEREO; 6306 } 6307 6308 if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 6309 mConfig.inputCfg.channels = AUDIO_CHANNEL_OUT_MONO; 6310 } else { 6311 mConfig.inputCfg.channels = channels; 6312 } 6313 mConfig.outputCfg.channels = channels; 6314 mConfig.inputCfg.format = AUDIO_FORMAT_PCM_16_BIT; 6315 mConfig.outputCfg.format = AUDIO_FORMAT_PCM_16_BIT; 6316 mConfig.inputCfg.samplingRate = thread->sampleRate(); 6317 mConfig.outputCfg.samplingRate = mConfig.inputCfg.samplingRate; 6318 mConfig.inputCfg.bufferProvider.cookie = NULL; 6319 mConfig.inputCfg.bufferProvider.getBuffer = NULL; 6320 mConfig.inputCfg.bufferProvider.releaseBuffer = NULL; 6321 mConfig.outputCfg.bufferProvider.cookie = NULL; 6322 mConfig.outputCfg.bufferProvider.getBuffer = NULL; 6323 mConfig.outputCfg.bufferProvider.releaseBuffer = NULL; 6324 mConfig.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ; 6325 // Insert effect: 6326 // - in session AUDIO_SESSION_OUTPUT_MIX or AUDIO_SESSION_OUTPUT_STAGE, 6327 // always overwrites output buffer: input buffer == output buffer 6328 // - in other sessions: 6329 // last effect in the chain accumulates in output buffer: input buffer != output buffer 6330 // other effect: overwrites output buffer: input buffer == output buffer 6331 // Auxiliary effect: 6332 // accumulates in output buffer: input buffer != output buffer 6333 // Therefore: accumulate <=> input buffer != output buffer 6334 if (mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) { 6335 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE; 6336 } else { 6337 mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_WRITE; 6338 } 6339 mConfig.inputCfg.mask = EFFECT_CONFIG_ALL; 6340 mConfig.outputCfg.mask = EFFECT_CONFIG_ALL; 6341 mConfig.inputCfg.buffer.frameCount = thread->frameCount(); 6342 mConfig.outputCfg.buffer.frameCount = mConfig.inputCfg.buffer.frameCount; 6343 6344 ALOGV("configure() %p thread %p buffer %p framecount %d", 6345 this, thread.get(), mConfig.inputCfg.buffer.raw, mConfig.inputCfg.buffer.frameCount); 6346 6347 status_t cmdStatus; 6348 uint32_t size = sizeof(int); 6349 status_t status = (*mEffectInterface)->command(mEffectInterface, 6350 EFFECT_CMD_CONFIGURE, 6351 sizeof(effect_config_t), 6352 &mConfig, 6353 &size, 6354 &cmdStatus); 6355 if (status == 0) { 6356 status = cmdStatus; 6357 } 6358 6359 mMaxDisableWaitCnt = (MAX_DISABLE_TIME_MS * mConfig.outputCfg.samplingRate) / 6360 (1000 * mConfig.outputCfg.buffer.frameCount); 6361 6362 return status; 6363} 6364 6365status_t AudioFlinger::EffectModule::init() 6366{ 6367 Mutex::Autolock _l(mLock); 6368 if (mEffectInterface == NULL) { 6369 return NO_INIT; 6370 } 6371 status_t cmdStatus; 6372 uint32_t size = sizeof(status_t); 6373 status_t status = (*mEffectInterface)->command(mEffectInterface, 6374 EFFECT_CMD_INIT, 6375 0, 6376 NULL, 6377 &size, 6378 &cmdStatus); 6379 if (status == 0) { 6380 status = cmdStatus; 6381 } 6382 return status; 6383} 6384 6385status_t AudioFlinger::EffectModule::start() 6386{ 6387 Mutex::Autolock _l(mLock); 6388 return start_l(); 6389} 6390 6391status_t AudioFlinger::EffectModule::start_l() 6392{ 6393 if (mEffectInterface == NULL) { 6394 return NO_INIT; 6395 } 6396 status_t cmdStatus; 6397 uint32_t size = sizeof(status_t); 6398 status_t status = (*mEffectInterface)->command(mEffectInterface, 6399 EFFECT_CMD_ENABLE, 6400 0, 6401 NULL, 6402 &size, 6403 &cmdStatus); 6404 if (status == 0) { 6405 status = cmdStatus; 6406 } 6407 if (status == 0 && 6408 ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 6409 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC)) { 6410 sp<ThreadBase> thread = mThread.promote(); 6411 if (thread != 0) { 6412 audio_stream_t *stream = thread->stream(); 6413 if (stream != NULL) { 6414 stream->add_audio_effect(stream, mEffectInterface); 6415 } 6416 } 6417 } 6418 return status; 6419} 6420 6421status_t AudioFlinger::EffectModule::stop() 6422{ 6423 Mutex::Autolock _l(mLock); 6424 return stop_l(); 6425} 6426 6427status_t AudioFlinger::EffectModule::stop_l() 6428{ 6429 if (mEffectInterface == NULL) { 6430 return NO_INIT; 6431 } 6432 status_t cmdStatus; 6433 uint32_t size = sizeof(status_t); 6434 status_t status = (*mEffectInterface)->command(mEffectInterface, 6435 EFFECT_CMD_DISABLE, 6436 0, 6437 NULL, 6438 &size, 6439 &cmdStatus); 6440 if (status == 0) { 6441 status = cmdStatus; 6442 } 6443 if (status == 0 && 6444 ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC || 6445 (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC)) { 6446 sp<ThreadBase> thread = mThread.promote(); 6447 if (thread != 0) { 6448 audio_stream_t *stream = thread->stream(); 6449 if (stream != NULL) { 6450 stream->remove_audio_effect(stream, mEffectInterface); 6451 } 6452 } 6453 } 6454 return status; 6455} 6456 6457status_t AudioFlinger::EffectModule::command(uint32_t cmdCode, 6458 uint32_t cmdSize, 6459 void *pCmdData, 6460 uint32_t *replySize, 6461 void *pReplyData) 6462{ 6463 Mutex::Autolock _l(mLock); 6464// ALOGV("command(), cmdCode: %d, mEffectInterface: %p", cmdCode, mEffectInterface); 6465 6466 if (mState == DESTROYED || mEffectInterface == NULL) { 6467 return NO_INIT; 6468 } 6469 status_t status = (*mEffectInterface)->command(mEffectInterface, 6470 cmdCode, 6471 cmdSize, 6472 pCmdData, 6473 replySize, 6474 pReplyData); 6475 if (cmdCode != EFFECT_CMD_GET_PARAM && status == NO_ERROR) { 6476 uint32_t size = (replySize == NULL) ? 0 : *replySize; 6477 for (size_t i = 1; i < mHandles.size(); i++) { 6478 sp<EffectHandle> h = mHandles[i].promote(); 6479 if (h != 0) { 6480 h->commandExecuted(cmdCode, cmdSize, pCmdData, size, pReplyData); 6481 } 6482 } 6483 } 6484 return status; 6485} 6486 6487status_t AudioFlinger::EffectModule::setEnabled(bool enabled) 6488{ 6489 6490 Mutex::Autolock _l(mLock); 6491 ALOGV("setEnabled %p enabled %d", this, enabled); 6492 6493 if (enabled != isEnabled()) { 6494 status_t status = AudioSystem::setEffectEnabled(mId, enabled); 6495 if (enabled && status != NO_ERROR) { 6496 return status; 6497 } 6498 6499 switch (mState) { 6500 // going from disabled to enabled 6501 case IDLE: 6502 mState = STARTING; 6503 break; 6504 case STOPPED: 6505 mState = RESTART; 6506 break; 6507 case STOPPING: 6508 mState = ACTIVE; 6509 break; 6510 6511 // going from enabled to disabled 6512 case RESTART: 6513 mState = STOPPED; 6514 break; 6515 case STARTING: 6516 mState = IDLE; 6517 break; 6518 case ACTIVE: 6519 mState = STOPPING; 6520 break; 6521 case DESTROYED: 6522 return NO_ERROR; // simply ignore as we are being destroyed 6523 } 6524 for (size_t i = 1; i < mHandles.size(); i++) { 6525 sp<EffectHandle> h = mHandles[i].promote(); 6526 if (h != 0) { 6527 h->setEnabled(enabled); 6528 } 6529 } 6530 } 6531 return NO_ERROR; 6532} 6533 6534bool AudioFlinger::EffectModule::isEnabled() 6535{ 6536 switch (mState) { 6537 case RESTART: 6538 case STARTING: 6539 case ACTIVE: 6540 return true; 6541 case IDLE: 6542 case STOPPING: 6543 case STOPPED: 6544 case DESTROYED: 6545 default: 6546 return false; 6547 } 6548} 6549 6550bool AudioFlinger::EffectModule::isProcessEnabled() 6551{ 6552 switch (mState) { 6553 case RESTART: 6554 case ACTIVE: 6555 case STOPPING: 6556 case STOPPED: 6557 return true; 6558 case IDLE: 6559 case STARTING: 6560 case DESTROYED: 6561 default: 6562 return false; 6563 } 6564} 6565 6566status_t AudioFlinger::EffectModule::setVolume(uint32_t *left, uint32_t *right, bool controller) 6567{ 6568 Mutex::Autolock _l(mLock); 6569 status_t status = NO_ERROR; 6570 6571 // Send volume indication if EFFECT_FLAG_VOLUME_IND is set and read back altered volume 6572 // if controller flag is set (Note that controller == TRUE => EFFECT_FLAG_VOLUME_CTRL set) 6573 if (isProcessEnabled() && 6574 ((mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL || 6575 (mDescriptor.flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_IND)) { 6576 status_t cmdStatus; 6577 uint32_t volume[2]; 6578 uint32_t *pVolume = NULL; 6579 uint32_t size = sizeof(volume); 6580 volume[0] = *left; 6581 volume[1] = *right; 6582 if (controller) { 6583 pVolume = volume; 6584 } 6585 status = (*mEffectInterface)->command(mEffectInterface, 6586 EFFECT_CMD_SET_VOLUME, 6587 size, 6588 volume, 6589 &size, 6590 pVolume); 6591 if (controller && status == NO_ERROR && size == sizeof(volume)) { 6592 *left = volume[0]; 6593 *right = volume[1]; 6594 } 6595 } 6596 return status; 6597} 6598 6599status_t AudioFlinger::EffectModule::setDevice(uint32_t device) 6600{ 6601 Mutex::Autolock _l(mLock); 6602 status_t status = NO_ERROR; 6603 if (device && (mDescriptor.flags & EFFECT_FLAG_DEVICE_MASK) == EFFECT_FLAG_DEVICE_IND) { 6604 // audio pre processing modules on RecordThread can receive both output and 6605 // input device indication in the same call 6606 uint32_t dev = device & AUDIO_DEVICE_OUT_ALL; 6607 if (dev) { 6608 status_t cmdStatus; 6609 uint32_t size = sizeof(status_t); 6610 6611 status = (*mEffectInterface)->command(mEffectInterface, 6612 EFFECT_CMD_SET_DEVICE, 6613 sizeof(uint32_t), 6614 &dev, 6615 &size, 6616 &cmdStatus); 6617 if (status == NO_ERROR) { 6618 status = cmdStatus; 6619 } 6620 } 6621 dev = device & AUDIO_DEVICE_IN_ALL; 6622 if (dev) { 6623 status_t cmdStatus; 6624 uint32_t size = sizeof(status_t); 6625 6626 status_t status2 = (*mEffectInterface)->command(mEffectInterface, 6627 EFFECT_CMD_SET_INPUT_DEVICE, 6628 sizeof(uint32_t), 6629 &dev, 6630 &size, 6631 &cmdStatus); 6632 if (status2 == NO_ERROR) { 6633 status2 = cmdStatus; 6634 } 6635 if (status == NO_ERROR) { 6636 status = status2; 6637 } 6638 } 6639 } 6640 return status; 6641} 6642 6643status_t AudioFlinger::EffectModule::setMode(uint32_t mode) 6644{ 6645 Mutex::Autolock _l(mLock); 6646 status_t status = NO_ERROR; 6647 if ((mDescriptor.flags & EFFECT_FLAG_AUDIO_MODE_MASK) == EFFECT_FLAG_AUDIO_MODE_IND) { 6648 status_t cmdStatus; 6649 uint32_t size = sizeof(status_t); 6650 status = (*mEffectInterface)->command(mEffectInterface, 6651 EFFECT_CMD_SET_AUDIO_MODE, 6652 sizeof(int), 6653 &mode, 6654 &size, 6655 &cmdStatus); 6656 if (status == NO_ERROR) { 6657 status = cmdStatus; 6658 } 6659 } 6660 return status; 6661} 6662 6663void AudioFlinger::EffectModule::setSuspended(bool suspended) 6664{ 6665 Mutex::Autolock _l(mLock); 6666 mSuspended = suspended; 6667} 6668bool AudioFlinger::EffectModule::suspended() 6669{ 6670 Mutex::Autolock _l(mLock); 6671 return mSuspended; 6672} 6673 6674status_t AudioFlinger::EffectModule::dump(int fd, const Vector<String16>& args) 6675{ 6676 const size_t SIZE = 256; 6677 char buffer[SIZE]; 6678 String8 result; 6679 6680 snprintf(buffer, SIZE, "\tEffect ID %d:\n", mId); 6681 result.append(buffer); 6682 6683 bool locked = tryLock(mLock); 6684 // failed to lock - AudioFlinger is probably deadlocked 6685 if (!locked) { 6686 result.append("\t\tCould not lock Fx mutex:\n"); 6687 } 6688 6689 result.append("\t\tSession Status State Engine:\n"); 6690 snprintf(buffer, SIZE, "\t\t%05d %03d %03d 0x%08x\n", 6691 mSessionId, mStatus, mState, (uint32_t)mEffectInterface); 6692 result.append(buffer); 6693 6694 result.append("\t\tDescriptor:\n"); 6695 snprintf(buffer, SIZE, "\t\t- UUID: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 6696 mDescriptor.uuid.timeLow, mDescriptor.uuid.timeMid, mDescriptor.uuid.timeHiAndVersion, 6697 mDescriptor.uuid.clockSeq, mDescriptor.uuid.node[0], mDescriptor.uuid.node[1],mDescriptor.uuid.node[2], 6698 mDescriptor.uuid.node[3],mDescriptor.uuid.node[4],mDescriptor.uuid.node[5]); 6699 result.append(buffer); 6700 snprintf(buffer, SIZE, "\t\t- TYPE: %08X-%04X-%04X-%04X-%02X%02X%02X%02X%02X%02X\n", 6701 mDescriptor.type.timeLow, mDescriptor.type.timeMid, mDescriptor.type.timeHiAndVersion, 6702 mDescriptor.type.clockSeq, mDescriptor.type.node[0], mDescriptor.type.node[1],mDescriptor.type.node[2], 6703 mDescriptor.type.node[3],mDescriptor.type.node[4],mDescriptor.type.node[5]); 6704 result.append(buffer); 6705 snprintf(buffer, SIZE, "\t\t- apiVersion: %08X\n\t\t- flags: %08X\n", 6706 mDescriptor.apiVersion, 6707 mDescriptor.flags); 6708 result.append(buffer); 6709 snprintf(buffer, SIZE, "\t\t- name: %s\n", 6710 mDescriptor.name); 6711 result.append(buffer); 6712 snprintf(buffer, SIZE, "\t\t- implementor: %s\n", 6713 mDescriptor.implementor); 6714 result.append(buffer); 6715 6716 result.append("\t\t- Input configuration:\n"); 6717 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 6718 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 6719 (uint32_t)mConfig.inputCfg.buffer.raw, 6720 mConfig.inputCfg.buffer.frameCount, 6721 mConfig.inputCfg.samplingRate, 6722 mConfig.inputCfg.channels, 6723 mConfig.inputCfg.format); 6724 result.append(buffer); 6725 6726 result.append("\t\t- Output configuration:\n"); 6727 result.append("\t\t\tBuffer Frames Smp rate Channels Format\n"); 6728 snprintf(buffer, SIZE, "\t\t\t0x%08x %05d %05d %08x %d\n", 6729 (uint32_t)mConfig.outputCfg.buffer.raw, 6730 mConfig.outputCfg.buffer.frameCount, 6731 mConfig.outputCfg.samplingRate, 6732 mConfig.outputCfg.channels, 6733 mConfig.outputCfg.format); 6734 result.append(buffer); 6735 6736 snprintf(buffer, SIZE, "\t\t%d Clients:\n", mHandles.size()); 6737 result.append(buffer); 6738 result.append("\t\t\tPid Priority Ctrl Locked client server\n"); 6739 for (size_t i = 0; i < mHandles.size(); ++i) { 6740 sp<EffectHandle> handle = mHandles[i].promote(); 6741 if (handle != 0) { 6742 handle->dump(buffer, SIZE); 6743 result.append(buffer); 6744 } 6745 } 6746 6747 result.append("\n"); 6748 6749 write(fd, result.string(), result.length()); 6750 6751 if (locked) { 6752 mLock.unlock(); 6753 } 6754 6755 return NO_ERROR; 6756} 6757 6758// ---------------------------------------------------------------------------- 6759// EffectHandle implementation 6760// ---------------------------------------------------------------------------- 6761 6762#undef LOG_TAG 6763#define LOG_TAG "AudioFlinger::EffectHandle" 6764 6765AudioFlinger::EffectHandle::EffectHandle(const sp<EffectModule>& effect, 6766 const sp<AudioFlinger::Client>& client, 6767 const sp<IEffectClient>& effectClient, 6768 int32_t priority) 6769 : BnEffect(), 6770 mEffect(effect), mEffectClient(effectClient), mClient(client), mCblk(NULL), 6771 mPriority(priority), mHasControl(false), mEnabled(false) 6772{ 6773 ALOGV("constructor %p", this); 6774 6775 if (client == 0) { 6776 return; 6777 } 6778 int bufOffset = ((sizeof(effect_param_cblk_t) - 1) / sizeof(int) + 1) * sizeof(int); 6779 mCblkMemory = client->heap()->allocate(EFFECT_PARAM_BUFFER_SIZE + bufOffset); 6780 if (mCblkMemory != 0) { 6781 mCblk = static_cast<effect_param_cblk_t *>(mCblkMemory->pointer()); 6782 6783 if (mCblk) { 6784 new(mCblk) effect_param_cblk_t(); 6785 mBuffer = (uint8_t *)mCblk + bufOffset; 6786 } 6787 } else { 6788 LOGE("not enough memory for Effect size=%u", EFFECT_PARAM_BUFFER_SIZE + sizeof(effect_param_cblk_t)); 6789 return; 6790 } 6791} 6792 6793AudioFlinger::EffectHandle::~EffectHandle() 6794{ 6795 ALOGV("Destructor %p", this); 6796 disconnect(false); 6797 ALOGV("Destructor DONE %p", this); 6798} 6799 6800status_t AudioFlinger::EffectHandle::enable() 6801{ 6802 ALOGV("enable %p", this); 6803 if (!mHasControl) return INVALID_OPERATION; 6804 if (mEffect == 0) return DEAD_OBJECT; 6805 6806 if (mEnabled) { 6807 return NO_ERROR; 6808 } 6809 6810 mEnabled = true; 6811 6812 sp<ThreadBase> thread = mEffect->thread().promote(); 6813 if (thread != 0) { 6814 thread->checkSuspendOnEffectEnabled(mEffect, true, mEffect->sessionId()); 6815 } 6816 6817 // checkSuspendOnEffectEnabled() can suspend this same effect when enabled 6818 if (mEffect->suspended()) { 6819 return NO_ERROR; 6820 } 6821 6822 status_t status = mEffect->setEnabled(true); 6823 if (status != NO_ERROR) { 6824 if (thread != 0) { 6825 thread->checkSuspendOnEffectEnabled(mEffect, false, mEffect->sessionId()); 6826 } 6827 mEnabled = false; 6828 } 6829 return status; 6830} 6831 6832status_t AudioFlinger::EffectHandle::disable() 6833{ 6834 ALOGV("disable %p", this); 6835 if (!mHasControl) return INVALID_OPERATION; 6836 if (mEffect == 0) return DEAD_OBJECT; 6837 6838 if (!mEnabled) { 6839 return NO_ERROR; 6840 } 6841 mEnabled = false; 6842 6843 if (mEffect->suspended()) { 6844 return NO_ERROR; 6845 } 6846 6847 status_t status = mEffect->setEnabled(false); 6848 6849 sp<ThreadBase> thread = mEffect->thread().promote(); 6850 if (thread != 0) { 6851 thread->checkSuspendOnEffectEnabled(mEffect, false, mEffect->sessionId()); 6852 } 6853 6854 return status; 6855} 6856 6857void AudioFlinger::EffectHandle::disconnect() 6858{ 6859 disconnect(true); 6860} 6861 6862void AudioFlinger::EffectHandle::disconnect(bool unpiniflast) 6863{ 6864 ALOGV("disconnect(%s)", unpiniflast ? "true" : "false"); 6865 if (mEffect == 0) { 6866 return; 6867 } 6868 mEffect->disconnect(this, unpiniflast); 6869 6870 if (mHasControl && mEnabled) { 6871 sp<ThreadBase> thread = mEffect->thread().promote(); 6872 if (thread != 0) { 6873 thread->checkSuspendOnEffectEnabled(mEffect, false, mEffect->sessionId()); 6874 } 6875 } 6876 6877 // release sp on module => module destructor can be called now 6878 mEffect.clear(); 6879 if (mClient != 0) { 6880 if (mCblk) { 6881 mCblk->~effect_param_cblk_t(); // destroy our shared-structure. 6882 } 6883 mCblkMemory.clear(); // and free the shared memory 6884 Mutex::Autolock _l(mClient->audioFlinger()->mLock); 6885 mClient.clear(); 6886 } 6887} 6888 6889status_t AudioFlinger::EffectHandle::command(uint32_t cmdCode, 6890 uint32_t cmdSize, 6891 void *pCmdData, 6892 uint32_t *replySize, 6893 void *pReplyData) 6894{ 6895// ALOGV("command(), cmdCode: %d, mHasControl: %d, mEffect: %p", 6896// cmdCode, mHasControl, (mEffect == 0) ? 0 : mEffect.get()); 6897 6898 // only get parameter command is permitted for applications not controlling the effect 6899 if (!mHasControl && cmdCode != EFFECT_CMD_GET_PARAM) { 6900 return INVALID_OPERATION; 6901 } 6902 if (mEffect == 0) return DEAD_OBJECT; 6903 if (mClient == 0) return INVALID_OPERATION; 6904 6905 // handle commands that are not forwarded transparently to effect engine 6906 if (cmdCode == EFFECT_CMD_SET_PARAM_COMMIT) { 6907 // No need to trylock() here as this function is executed in the binder thread serving a particular client process: 6908 // no risk to block the whole media server process or mixer threads is we are stuck here 6909 Mutex::Autolock _l(mCblk->lock); 6910 if (mCblk->clientIndex > EFFECT_PARAM_BUFFER_SIZE || 6911 mCblk->serverIndex > EFFECT_PARAM_BUFFER_SIZE) { 6912 mCblk->serverIndex = 0; 6913 mCblk->clientIndex = 0; 6914 return BAD_VALUE; 6915 } 6916 status_t status = NO_ERROR; 6917 while (mCblk->serverIndex < mCblk->clientIndex) { 6918 int reply; 6919 uint32_t rsize = sizeof(int); 6920 int *p = (int *)(mBuffer + mCblk->serverIndex); 6921 int size = *p++; 6922 if (((uint8_t *)p + size) > mBuffer + mCblk->clientIndex) { 6923 LOGW("command(): invalid parameter block size"); 6924 break; 6925 } 6926 effect_param_t *param = (effect_param_t *)p; 6927 if (param->psize == 0 || param->vsize == 0) { 6928 LOGW("command(): null parameter or value size"); 6929 mCblk->serverIndex += size; 6930 continue; 6931 } 6932 uint32_t psize = sizeof(effect_param_t) + 6933 ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + 6934 param->vsize; 6935 status_t ret = mEffect->command(EFFECT_CMD_SET_PARAM, 6936 psize, 6937 p, 6938 &rsize, 6939 &reply); 6940 // stop at first error encountered 6941 if (ret != NO_ERROR) { 6942 status = ret; 6943 *(int *)pReplyData = reply; 6944 break; 6945 } else if (reply != NO_ERROR) { 6946 *(int *)pReplyData = reply; 6947 break; 6948 } 6949 mCblk->serverIndex += size; 6950 } 6951 mCblk->serverIndex = 0; 6952 mCblk->clientIndex = 0; 6953 return status; 6954 } else if (cmdCode == EFFECT_CMD_ENABLE) { 6955 *(int *)pReplyData = NO_ERROR; 6956 return enable(); 6957 } else if (cmdCode == EFFECT_CMD_DISABLE) { 6958 *(int *)pReplyData = NO_ERROR; 6959 return disable(); 6960 } 6961 6962 return mEffect->command(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6963} 6964 6965sp<IMemory> AudioFlinger::EffectHandle::getCblk() const { 6966 return mCblkMemory; 6967} 6968 6969void AudioFlinger::EffectHandle::setControl(bool hasControl, bool signal, bool enabled) 6970{ 6971 ALOGV("setControl %p control %d", this, hasControl); 6972 6973 mHasControl = hasControl; 6974 mEnabled = enabled; 6975 6976 if (signal && mEffectClient != 0) { 6977 mEffectClient->controlStatusChanged(hasControl); 6978 } 6979} 6980 6981void AudioFlinger::EffectHandle::commandExecuted(uint32_t cmdCode, 6982 uint32_t cmdSize, 6983 void *pCmdData, 6984 uint32_t replySize, 6985 void *pReplyData) 6986{ 6987 if (mEffectClient != 0) { 6988 mEffectClient->commandExecuted(cmdCode, cmdSize, pCmdData, replySize, pReplyData); 6989 } 6990} 6991 6992 6993 6994void AudioFlinger::EffectHandle::setEnabled(bool enabled) 6995{ 6996 if (mEffectClient != 0) { 6997 mEffectClient->enableStatusChanged(enabled); 6998 } 6999} 7000 7001status_t AudioFlinger::EffectHandle::onTransact( 7002 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 7003{ 7004 return BnEffect::onTransact(code, data, reply, flags); 7005} 7006 7007 7008void AudioFlinger::EffectHandle::dump(char* buffer, size_t size) 7009{ 7010 bool locked = mCblk ? tryLock(mCblk->lock) : false; 7011 7012 snprintf(buffer, size, "\t\t\t%05d %05d %01u %01u %05u %05u\n", 7013 (mClient == NULL) ? getpid() : mClient->pid(), 7014 mPriority, 7015 mHasControl, 7016 !locked, 7017 mCblk ? mCblk->clientIndex : 0, 7018 mCblk ? mCblk->serverIndex : 0 7019 ); 7020 7021 if (locked) { 7022 mCblk->lock.unlock(); 7023 } 7024} 7025 7026#undef LOG_TAG 7027#define LOG_TAG "AudioFlinger::EffectChain" 7028 7029AudioFlinger::EffectChain::EffectChain(const wp<ThreadBase>& wThread, 7030 int sessionId) 7031 : mThread(wThread), mSessionId(sessionId), mActiveTrackCnt(0), mTrackCnt(0), 7032 mOwnInBuffer(false), mVolumeCtrlIdx(-1), mLeftVolume(UINT_MAX), mRightVolume(UINT_MAX), 7033 mNewLeftVolume(UINT_MAX), mNewRightVolume(UINT_MAX) 7034{ 7035 mStrategy = AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC); 7036} 7037 7038AudioFlinger::EffectChain::~EffectChain() 7039{ 7040 if (mOwnInBuffer) { 7041 delete mInBuffer; 7042 } 7043 7044} 7045 7046// getEffectFromDesc_l() must be called with ThreadBase::mLock held 7047sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromDesc_l(effect_descriptor_t *descriptor) 7048{ 7049 sp<EffectModule> effect; 7050 size_t size = mEffects.size(); 7051 7052 for (size_t i = 0; i < size; i++) { 7053 if (memcmp(&mEffects[i]->desc().uuid, &descriptor->uuid, sizeof(effect_uuid_t)) == 0) { 7054 effect = mEffects[i]; 7055 break; 7056 } 7057 } 7058 return effect; 7059} 7060 7061// getEffectFromId_l() must be called with ThreadBase::mLock held 7062sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromId_l(int id) 7063{ 7064 sp<EffectModule> effect; 7065 size_t size = mEffects.size(); 7066 7067 for (size_t i = 0; i < size; i++) { 7068 // by convention, return first effect if id provided is 0 (0 is never a valid id) 7069 if (id == 0 || mEffects[i]->id() == id) { 7070 effect = mEffects[i]; 7071 break; 7072 } 7073 } 7074 return effect; 7075} 7076 7077// getEffectFromType_l() must be called with ThreadBase::mLock held 7078sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectFromType_l( 7079 const effect_uuid_t *type) 7080{ 7081 sp<EffectModule> effect; 7082 size_t size = mEffects.size(); 7083 7084 for (size_t i = 0; i < size; i++) { 7085 if (memcmp(&mEffects[i]->desc().type, type, sizeof(effect_uuid_t)) == 0) { 7086 effect = mEffects[i]; 7087 break; 7088 } 7089 } 7090 return effect; 7091} 7092 7093// Must be called with EffectChain::mLock locked 7094void AudioFlinger::EffectChain::process_l() 7095{ 7096 sp<ThreadBase> thread = mThread.promote(); 7097 if (thread == 0) { 7098 LOGW("process_l(): cannot promote mixer thread"); 7099 return; 7100 } 7101 bool isGlobalSession = (mSessionId == AUDIO_SESSION_OUTPUT_MIX) || 7102 (mSessionId == AUDIO_SESSION_OUTPUT_STAGE); 7103 bool tracksOnSession = false; 7104 if (!isGlobalSession) { 7105 tracksOnSession = (trackCnt() != 0); 7106 } 7107 7108 // if no track is active, input buffer must be cleared here as the mixer process 7109 // will not do it 7110 if (tracksOnSession && 7111 activeTrackCnt() == 0) { 7112 size_t numSamples = thread->frameCount() * thread->channelCount(); 7113 memset(mInBuffer, 0, numSamples * sizeof(int16_t)); 7114 } 7115 7116 size_t size = mEffects.size(); 7117 // do not process effect if no track is present in same audio session 7118 if (isGlobalSession || tracksOnSession) { 7119 for (size_t i = 0; i < size; i++) { 7120 mEffects[i]->process(); 7121 } 7122 } 7123 for (size_t i = 0; i < size; i++) { 7124 mEffects[i]->updateState(); 7125 } 7126} 7127 7128// addEffect_l() must be called with PlaybackThread::mLock held 7129status_t AudioFlinger::EffectChain::addEffect_l(const sp<EffectModule>& effect) 7130{ 7131 effect_descriptor_t desc = effect->desc(); 7132 uint32_t insertPref = desc.flags & EFFECT_FLAG_INSERT_MASK; 7133 7134 Mutex::Autolock _l(mLock); 7135 effect->setChain(this); 7136 sp<ThreadBase> thread = mThread.promote(); 7137 if (thread == 0) { 7138 return NO_INIT; 7139 } 7140 effect->setThread(thread); 7141 7142 if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 7143 // Auxiliary effects are inserted at the beginning of mEffects vector as 7144 // they are processed first and accumulated in chain input buffer 7145 mEffects.insertAt(effect, 0); 7146 7147 // the input buffer for auxiliary effect contains mono samples in 7148 // 32 bit format. This is to avoid saturation in AudoMixer 7149 // accumulation stage. Saturation is done in EffectModule::process() before 7150 // calling the process in effect engine 7151 size_t numSamples = thread->frameCount(); 7152 int32_t *buffer = new int32_t[numSamples]; 7153 memset(buffer, 0, numSamples * sizeof(int32_t)); 7154 effect->setInBuffer((int16_t *)buffer); 7155 // auxiliary effects output samples to chain input buffer for further processing 7156 // by insert effects 7157 effect->setOutBuffer(mInBuffer); 7158 } else { 7159 // Insert effects are inserted at the end of mEffects vector as they are processed 7160 // after track and auxiliary effects. 7161 // Insert effect order as a function of indicated preference: 7162 // if EFFECT_FLAG_INSERT_EXCLUSIVE, insert in first position or reject if 7163 // another effect is present 7164 // else if EFFECT_FLAG_INSERT_FIRST, insert in first position or after the 7165 // last effect claiming first position 7166 // else if EFFECT_FLAG_INSERT_LAST, insert in last position or before the 7167 // first effect claiming last position 7168 // else if EFFECT_FLAG_INSERT_ANY insert after first or before last 7169 // Reject insertion if an effect with EFFECT_FLAG_INSERT_EXCLUSIVE is 7170 // already present 7171 7172 int size = (int)mEffects.size(); 7173 int idx_insert = size; 7174 int idx_insert_first = -1; 7175 int idx_insert_last = -1; 7176 7177 for (int i = 0; i < size; i++) { 7178 effect_descriptor_t d = mEffects[i]->desc(); 7179 uint32_t iMode = d.flags & EFFECT_FLAG_TYPE_MASK; 7180 uint32_t iPref = d.flags & EFFECT_FLAG_INSERT_MASK; 7181 if (iMode == EFFECT_FLAG_TYPE_INSERT) { 7182 // check invalid effect chaining combinations 7183 if (insertPref == EFFECT_FLAG_INSERT_EXCLUSIVE || 7184 iPref == EFFECT_FLAG_INSERT_EXCLUSIVE) { 7185 LOGW("addEffect_l() could not insert effect %s: exclusive conflict with %s", desc.name, d.name); 7186 return INVALID_OPERATION; 7187 } 7188 // remember position of first insert effect and by default 7189 // select this as insert position for new effect 7190 if (idx_insert == size) { 7191 idx_insert = i; 7192 } 7193 // remember position of last insert effect claiming 7194 // first position 7195 if (iPref == EFFECT_FLAG_INSERT_FIRST) { 7196 idx_insert_first = i; 7197 } 7198 // remember position of first insert effect claiming 7199 // last position 7200 if (iPref == EFFECT_FLAG_INSERT_LAST && 7201 idx_insert_last == -1) { 7202 idx_insert_last = i; 7203 } 7204 } 7205 } 7206 7207 // modify idx_insert from first position if needed 7208 if (insertPref == EFFECT_FLAG_INSERT_LAST) { 7209 if (idx_insert_last != -1) { 7210 idx_insert = idx_insert_last; 7211 } else { 7212 idx_insert = size; 7213 } 7214 } else { 7215 if (idx_insert_first != -1) { 7216 idx_insert = idx_insert_first + 1; 7217 } 7218 } 7219 7220 // always read samples from chain input buffer 7221 effect->setInBuffer(mInBuffer); 7222 7223 // if last effect in the chain, output samples to chain 7224 // output buffer, otherwise to chain input buffer 7225 if (idx_insert == size) { 7226 if (idx_insert != 0) { 7227 mEffects[idx_insert-1]->setOutBuffer(mInBuffer); 7228 mEffects[idx_insert-1]->configure(); 7229 } 7230 effect->setOutBuffer(mOutBuffer); 7231 } else { 7232 effect->setOutBuffer(mInBuffer); 7233 } 7234 mEffects.insertAt(effect, idx_insert); 7235 7236 ALOGV("addEffect_l() effect %p, added in chain %p at rank %d", effect.get(), this, idx_insert); 7237 } 7238 effect->configure(); 7239 return NO_ERROR; 7240} 7241 7242// removeEffect_l() must be called with PlaybackThread::mLock held 7243size_t AudioFlinger::EffectChain::removeEffect_l(const sp<EffectModule>& effect) 7244{ 7245 Mutex::Autolock _l(mLock); 7246 int size = (int)mEffects.size(); 7247 int i; 7248 uint32_t type = effect->desc().flags & EFFECT_FLAG_TYPE_MASK; 7249 7250 for (i = 0; i < size; i++) { 7251 if (effect == mEffects[i]) { 7252 // calling stop here will remove pre-processing effect from the audio HAL. 7253 // This is safe as we hold the EffectChain mutex which guarantees that we are not in 7254 // the middle of a read from audio HAL 7255 if (mEffects[i]->state() == EffectModule::ACTIVE || 7256 mEffects[i]->state() == EffectModule::STOPPING) { 7257 mEffects[i]->stop(); 7258 } 7259 if (type == EFFECT_FLAG_TYPE_AUXILIARY) { 7260 delete[] effect->inBuffer(); 7261 } else { 7262 if (i == size - 1 && i != 0) { 7263 mEffects[i - 1]->setOutBuffer(mOutBuffer); 7264 mEffects[i - 1]->configure(); 7265 } 7266 } 7267 mEffects.removeAt(i); 7268 ALOGV("removeEffect_l() effect %p, removed from chain %p at rank %d", effect.get(), this, i); 7269 break; 7270 } 7271 } 7272 7273 return mEffects.size(); 7274} 7275 7276// setDevice_l() must be called with PlaybackThread::mLock held 7277void AudioFlinger::EffectChain::setDevice_l(uint32_t device) 7278{ 7279 size_t size = mEffects.size(); 7280 for (size_t i = 0; i < size; i++) { 7281 mEffects[i]->setDevice(device); 7282 } 7283} 7284 7285// setMode_l() must be called with PlaybackThread::mLock held 7286void AudioFlinger::EffectChain::setMode_l(uint32_t mode) 7287{ 7288 size_t size = mEffects.size(); 7289 for (size_t i = 0; i < size; i++) { 7290 mEffects[i]->setMode(mode); 7291 } 7292} 7293 7294// setVolume_l() must be called with PlaybackThread::mLock held 7295bool AudioFlinger::EffectChain::setVolume_l(uint32_t *left, uint32_t *right) 7296{ 7297 uint32_t newLeft = *left; 7298 uint32_t newRight = *right; 7299 bool hasControl = false; 7300 int ctrlIdx = -1; 7301 size_t size = mEffects.size(); 7302 7303 // first update volume controller 7304 for (size_t i = size; i > 0; i--) { 7305 if (mEffects[i - 1]->isProcessEnabled() && 7306 (mEffects[i - 1]->desc().flags & EFFECT_FLAG_VOLUME_MASK) == EFFECT_FLAG_VOLUME_CTRL) { 7307 ctrlIdx = i - 1; 7308 hasControl = true; 7309 break; 7310 } 7311 } 7312 7313 if (ctrlIdx == mVolumeCtrlIdx && *left == mLeftVolume && *right == mRightVolume) { 7314 if (hasControl) { 7315 *left = mNewLeftVolume; 7316 *right = mNewRightVolume; 7317 } 7318 return hasControl; 7319 } 7320 7321 mVolumeCtrlIdx = ctrlIdx; 7322 mLeftVolume = newLeft; 7323 mRightVolume = newRight; 7324 7325 // second get volume update from volume controller 7326 if (ctrlIdx >= 0) { 7327 mEffects[ctrlIdx]->setVolume(&newLeft, &newRight, true); 7328 mNewLeftVolume = newLeft; 7329 mNewRightVolume = newRight; 7330 } 7331 // then indicate volume to all other effects in chain. 7332 // Pass altered volume to effects before volume controller 7333 // and requested volume to effects after controller 7334 uint32_t lVol = newLeft; 7335 uint32_t rVol = newRight; 7336 7337 for (size_t i = 0; i < size; i++) { 7338 if ((int)i == ctrlIdx) continue; 7339 // this also works for ctrlIdx == -1 when there is no volume controller 7340 if ((int)i > ctrlIdx) { 7341 lVol = *left; 7342 rVol = *right; 7343 } 7344 mEffects[i]->setVolume(&lVol, &rVol, false); 7345 } 7346 *left = newLeft; 7347 *right = newRight; 7348 7349 return hasControl; 7350} 7351 7352status_t AudioFlinger::EffectChain::dump(int fd, const Vector<String16>& args) 7353{ 7354 const size_t SIZE = 256; 7355 char buffer[SIZE]; 7356 String8 result; 7357 7358 snprintf(buffer, SIZE, "Effects for session %d:\n", mSessionId); 7359 result.append(buffer); 7360 7361 bool locked = tryLock(mLock); 7362 // failed to lock - AudioFlinger is probably deadlocked 7363 if (!locked) { 7364 result.append("\tCould not lock mutex:\n"); 7365 } 7366 7367 result.append("\tNum fx In buffer Out buffer Active tracks:\n"); 7368 snprintf(buffer, SIZE, "\t%02d 0x%08x 0x%08x %d\n", 7369 mEffects.size(), 7370 (uint32_t)mInBuffer, 7371 (uint32_t)mOutBuffer, 7372 mActiveTrackCnt); 7373 result.append(buffer); 7374 write(fd, result.string(), result.size()); 7375 7376 for (size_t i = 0; i < mEffects.size(); ++i) { 7377 sp<EffectModule> effect = mEffects[i]; 7378 if (effect != 0) { 7379 effect->dump(fd, args); 7380 } 7381 } 7382 7383 if (locked) { 7384 mLock.unlock(); 7385 } 7386 7387 return NO_ERROR; 7388} 7389 7390// must be called with ThreadBase::mLock held 7391void AudioFlinger::EffectChain::setEffectSuspended_l( 7392 const effect_uuid_t *type, bool suspend) 7393{ 7394 sp<SuspendedEffectDesc> desc; 7395 // use effect type UUID timelow as key as there is no real risk of identical 7396 // timeLow fields among effect type UUIDs. 7397 int index = mSuspendedEffects.indexOfKey(type->timeLow); 7398 if (suspend) { 7399 if (index >= 0) { 7400 desc = mSuspendedEffects.valueAt(index); 7401 } else { 7402 desc = new SuspendedEffectDesc(); 7403 memcpy(&desc->mType, type, sizeof(effect_uuid_t)); 7404 mSuspendedEffects.add(type->timeLow, desc); 7405 ALOGV("setEffectSuspended_l() add entry for %08x", type->timeLow); 7406 } 7407 if (desc->mRefCount++ == 0) { 7408 sp<EffectModule> effect = getEffectIfEnabled(type); 7409 if (effect != 0) { 7410 desc->mEffect = effect; 7411 effect->setSuspended(true); 7412 effect->setEnabled(false); 7413 } 7414 } 7415 } else { 7416 if (index < 0) { 7417 return; 7418 } 7419 desc = mSuspendedEffects.valueAt(index); 7420 if (desc->mRefCount <= 0) { 7421 LOGW("setEffectSuspended_l() restore refcount should not be 0 %d", desc->mRefCount); 7422 desc->mRefCount = 1; 7423 } 7424 if (--desc->mRefCount == 0) { 7425 ALOGV("setEffectSuspended_l() remove entry for %08x", mSuspendedEffects.keyAt(index)); 7426 if (desc->mEffect != 0) { 7427 sp<EffectModule> effect = desc->mEffect.promote(); 7428 if (effect != 0) { 7429 effect->setSuspended(false); 7430 sp<EffectHandle> handle = effect->controlHandle(); 7431 if (handle != 0) { 7432 effect->setEnabled(handle->enabled()); 7433 } 7434 } 7435 desc->mEffect.clear(); 7436 } 7437 mSuspendedEffects.removeItemsAt(index); 7438 } 7439 } 7440} 7441 7442// must be called with ThreadBase::mLock held 7443void AudioFlinger::EffectChain::setEffectSuspendedAll_l(bool suspend) 7444{ 7445 sp<SuspendedEffectDesc> desc; 7446 7447 int index = mSuspendedEffects.indexOfKey((int)kKeyForSuspendAll); 7448 if (suspend) { 7449 if (index >= 0) { 7450 desc = mSuspendedEffects.valueAt(index); 7451 } else { 7452 desc = new SuspendedEffectDesc(); 7453 mSuspendedEffects.add((int)kKeyForSuspendAll, desc); 7454 ALOGV("setEffectSuspendedAll_l() add entry for 0"); 7455 } 7456 if (desc->mRefCount++ == 0) { 7457 Vector< sp<EffectModule> > effects = getSuspendEligibleEffects(); 7458 for (size_t i = 0; i < effects.size(); i++) { 7459 setEffectSuspended_l(&effects[i]->desc().type, true); 7460 } 7461 } 7462 } else { 7463 if (index < 0) { 7464 return; 7465 } 7466 desc = mSuspendedEffects.valueAt(index); 7467 if (desc->mRefCount <= 0) { 7468 LOGW("setEffectSuspendedAll_l() restore refcount should not be 0 %d", desc->mRefCount); 7469 desc->mRefCount = 1; 7470 } 7471 if (--desc->mRefCount == 0) { 7472 Vector<const effect_uuid_t *> types; 7473 for (size_t i = 0; i < mSuspendedEffects.size(); i++) { 7474 if (mSuspendedEffects.keyAt(i) == (int)kKeyForSuspendAll) { 7475 continue; 7476 } 7477 types.add(&mSuspendedEffects.valueAt(i)->mType); 7478 } 7479 for (size_t i = 0; i < types.size(); i++) { 7480 setEffectSuspended_l(types[i], false); 7481 } 7482 ALOGV("setEffectSuspendedAll_l() remove entry for %08x", mSuspendedEffects.keyAt(index)); 7483 mSuspendedEffects.removeItem((int)kKeyForSuspendAll); 7484 } 7485 } 7486} 7487 7488 7489// The volume effect is used for automated tests only 7490#ifndef OPENSL_ES_H_ 7491static const effect_uuid_t SL_IID_VOLUME_ = { 0x09e8ede0, 0xddde, 0x11db, 0xb4f6, 7492 { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } }; 7493const effect_uuid_t * const SL_IID_VOLUME = &SL_IID_VOLUME_; 7494#endif //OPENSL_ES_H_ 7495 7496bool AudioFlinger::EffectChain::isEffectEligibleForSuspend(const effect_descriptor_t& desc) 7497{ 7498 // auxiliary effects and visualizer are never suspended on output mix 7499 if ((mSessionId == AUDIO_SESSION_OUTPUT_MIX) && 7500 (((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) || 7501 (memcmp(&desc.type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0) || 7502 (memcmp(&desc.type, SL_IID_VOLUME, sizeof(effect_uuid_t)) == 0))) { 7503 return false; 7504 } 7505 return true; 7506} 7507 7508Vector< sp<AudioFlinger::EffectModule> > AudioFlinger::EffectChain::getSuspendEligibleEffects() 7509{ 7510 Vector< sp<EffectModule> > effects; 7511 for (size_t i = 0; i < mEffects.size(); i++) { 7512 if (!isEffectEligibleForSuspend(mEffects[i]->desc())) { 7513 continue; 7514 } 7515 effects.add(mEffects[i]); 7516 } 7517 return effects; 7518} 7519 7520sp<AudioFlinger::EffectModule> AudioFlinger::EffectChain::getEffectIfEnabled( 7521 const effect_uuid_t *type) 7522{ 7523 sp<EffectModule> effect; 7524 effect = getEffectFromType_l(type); 7525 if (effect != 0 && !effect->isEnabled()) { 7526 effect.clear(); 7527 } 7528 return effect; 7529} 7530 7531void AudioFlinger::EffectChain::checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 7532 bool enabled) 7533{ 7534 int index = mSuspendedEffects.indexOfKey(effect->desc().type.timeLow); 7535 if (enabled) { 7536 if (index < 0) { 7537 // if the effect is not suspend check if all effects are suspended 7538 index = mSuspendedEffects.indexOfKey((int)kKeyForSuspendAll); 7539 if (index < 0) { 7540 return; 7541 } 7542 if (!isEffectEligibleForSuspend(effect->desc())) { 7543 return; 7544 } 7545 setEffectSuspended_l(&effect->desc().type, enabled); 7546 index = mSuspendedEffects.indexOfKey(effect->desc().type.timeLow); 7547 if (index < 0) { 7548 LOGW("checkSuspendOnEffectEnabled() Fx should be suspended here!"); 7549 return; 7550 } 7551 } 7552 ALOGV("checkSuspendOnEffectEnabled() enable suspending fx %08x", 7553 effect->desc().type.timeLow); 7554 sp<SuspendedEffectDesc> desc = mSuspendedEffects.valueAt(index); 7555 // if effect is requested to suspended but was not yet enabled, supend it now. 7556 if (desc->mEffect == 0) { 7557 desc->mEffect = effect; 7558 effect->setEnabled(false); 7559 effect->setSuspended(true); 7560 } 7561 } else { 7562 if (index < 0) { 7563 return; 7564 } 7565 ALOGV("checkSuspendOnEffectEnabled() disable restoring fx %08x", 7566 effect->desc().type.timeLow); 7567 sp<SuspendedEffectDesc> desc = mSuspendedEffects.valueAt(index); 7568 desc->mEffect.clear(); 7569 effect->setSuspended(false); 7570 } 7571} 7572 7573#undef LOG_TAG 7574#define LOG_TAG "AudioFlinger" 7575 7576// ---------------------------------------------------------------------------- 7577 7578status_t AudioFlinger::onTransact( 7579 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 7580{ 7581 return BnAudioFlinger::onTransact(code, data, reply, flags); 7582} 7583 7584}; // namespace android 7585