AudioFlinger.cpp revision 291bb6d8947c5b0c062f0895d623c529259bfa39
1/* 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 "Configuration.h" 23#include <dirent.h> 24#include <math.h> 25#include <signal.h> 26#include <sys/time.h> 27#include <sys/resource.h> 28 29#include <binder/IPCThreadState.h> 30#include <binder/IServiceManager.h> 31#include <utils/Log.h> 32#include <utils/Trace.h> 33#include <binder/Parcel.h> 34#include <utils/String16.h> 35#include <utils/threads.h> 36#include <utils/Atomic.h> 37 38#include <cutils/bitops.h> 39#include <cutils/properties.h> 40#include <cutils/compiler.h> 41 42#include <system/audio.h> 43#include <hardware/audio.h> 44 45#include "AudioMixer.h" 46#include "AudioFlinger.h" 47#include "ServiceUtilities.h" 48 49#include <media/EffectsFactoryApi.h> 50#include <audio_effects/effect_visualizer.h> 51#include <audio_effects/effect_ns.h> 52#include <audio_effects/effect_aec.h> 53 54#include <audio_utils/primitives.h> 55 56#include <powermanager/PowerManager.h> 57 58#include <common_time/cc_helper.h> 59 60#include <media/IMediaLogService.h> 61 62#include <media/nbaio/Pipe.h> 63#include <media/nbaio/PipeReader.h> 64#include <media/AudioParameter.h> 65#include <private/android_filesystem_config.h> 66 67// ---------------------------------------------------------------------------- 68 69// Note: the following macro is used for extremely verbose logging message. In 70// order to run with ALOG_ASSERT turned on, we need to have LOG_NDEBUG set to 71// 0; but one side effect of this is to turn all LOGV's as well. Some messages 72// are so verbose that we want to suppress them even when we have ALOG_ASSERT 73// turned on. Do not uncomment the #def below unless you really know what you 74// are doing and want to see all of the extremely verbose messages. 75//#define VERY_VERY_VERBOSE_LOGGING 76#ifdef VERY_VERY_VERBOSE_LOGGING 77#define ALOGVV ALOGV 78#else 79#define ALOGVV(a...) do { } while(0) 80#endif 81 82namespace android { 83 84static const char kDeadlockedString[] = "AudioFlinger may be deadlocked\n"; 85static const char kHardwareLockedString[] = "Hardware lock is taken\n"; 86 87 88nsecs_t AudioFlinger::mStandbyTimeInNsecs = kDefaultStandbyTimeInNsecs; 89 90uint32_t AudioFlinger::mScreenState; 91 92#ifdef TEE_SINK 93bool AudioFlinger::mTeeSinkInputEnabled = false; 94bool AudioFlinger::mTeeSinkOutputEnabled = false; 95bool AudioFlinger::mTeeSinkTrackEnabled = false; 96 97size_t AudioFlinger::mTeeSinkInputFrames = kTeeSinkInputFramesDefault; 98size_t AudioFlinger::mTeeSinkOutputFrames = kTeeSinkOutputFramesDefault; 99size_t AudioFlinger::mTeeSinkTrackFrames = kTeeSinkTrackFramesDefault; 100#endif 101 102// ---------------------------------------------------------------------------- 103 104static int load_audio_interface(const char *if_name, audio_hw_device_t **dev) 105{ 106 const hw_module_t *mod; 107 int rc; 108 109 rc = hw_get_module_by_class(AUDIO_HARDWARE_MODULE_ID, if_name, &mod); 110 ALOGE_IF(rc, "%s couldn't load audio hw module %s.%s (%s)", __func__, 111 AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc)); 112 if (rc) { 113 goto out; 114 } 115 rc = audio_hw_device_open(mod, dev); 116 ALOGE_IF(rc, "%s couldn't open audio hw device in %s.%s (%s)", __func__, 117 AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc)); 118 if (rc) { 119 goto out; 120 } 121 if ((*dev)->common.version != AUDIO_DEVICE_API_VERSION_CURRENT) { 122 ALOGE("%s wrong audio hw device version %04x", __func__, (*dev)->common.version); 123 rc = BAD_VALUE; 124 goto out; 125 } 126 return 0; 127 128out: 129 *dev = NULL; 130 return rc; 131} 132 133// ---------------------------------------------------------------------------- 134 135AudioFlinger::AudioFlinger() 136 : BnAudioFlinger(), 137 mPrimaryHardwareDev(NULL), 138 mHardwareStatus(AUDIO_HW_IDLE), 139 mMasterVolume(1.0f), 140 mMasterMute(false), 141 mNextUniqueId(1), 142 mMode(AUDIO_MODE_INVALID), 143 mBtNrecIsOff(false), 144 mIsLowRamDevice(true), 145 mIsDeviceTypeKnown(false) 146{ 147 getpid_cached = getpid(); 148 char value[PROPERTY_VALUE_MAX]; 149 bool doLog = (property_get("ro.test_harness", value, "0") > 0) && (atoi(value) == 1); 150 if (doLog) { 151 mLogMemoryDealer = new MemoryDealer(kLogMemorySize, "LogWriters"); 152 } 153#ifdef TEE_SINK 154 (void) property_get("ro.debuggable", value, "0"); 155 int debuggable = atoi(value); 156 int teeEnabled = 0; 157 if (debuggable) { 158 (void) property_get("af.tee", value, "0"); 159 teeEnabled = atoi(value); 160 } 161 if (teeEnabled & 1) 162 mTeeSinkInputEnabled = true; 163 if (teeEnabled & 2) 164 mTeeSinkOutputEnabled = true; 165 if (teeEnabled & 4) 166 mTeeSinkTrackEnabled = true; 167#endif 168} 169 170void AudioFlinger::onFirstRef() 171{ 172 int rc = 0; 173 174 Mutex::Autolock _l(mLock); 175 176 /* TODO: move all this work into an Init() function */ 177 char val_str[PROPERTY_VALUE_MAX] = { 0 }; 178 if (property_get("ro.audio.flinger_standbytime_ms", val_str, NULL) >= 0) { 179 uint32_t int_val; 180 if (1 == sscanf(val_str, "%u", &int_val)) { 181 mStandbyTimeInNsecs = milliseconds(int_val); 182 ALOGI("Using %u mSec as standby time.", int_val); 183 } else { 184 mStandbyTimeInNsecs = kDefaultStandbyTimeInNsecs; 185 ALOGI("Using default %u mSec as standby time.", 186 (uint32_t)(mStandbyTimeInNsecs / 1000000)); 187 } 188 } 189 190 mMode = AUDIO_MODE_NORMAL; 191} 192 193AudioFlinger::~AudioFlinger() 194{ 195 while (!mRecordThreads.isEmpty()) { 196 // closeInput_nonvirtual() will remove specified entry from mRecordThreads 197 closeInput_nonvirtual(mRecordThreads.keyAt(0)); 198 } 199 while (!mPlaybackThreads.isEmpty()) { 200 // closeOutput_nonvirtual() will remove specified entry from mPlaybackThreads 201 closeOutput_nonvirtual(mPlaybackThreads.keyAt(0)); 202 } 203 204 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 205 // no mHardwareLock needed, as there are no other references to this 206 audio_hw_device_close(mAudioHwDevs.valueAt(i)->hwDevice()); 207 delete mAudioHwDevs.valueAt(i); 208 } 209} 210 211static const char * const audio_interfaces[] = { 212 AUDIO_HARDWARE_MODULE_ID_PRIMARY, 213 AUDIO_HARDWARE_MODULE_ID_A2DP, 214 AUDIO_HARDWARE_MODULE_ID_USB, 215}; 216#define ARRAY_SIZE(x) (sizeof((x))/sizeof(((x)[0]))) 217 218AudioFlinger::AudioHwDevice* AudioFlinger::findSuitableHwDev_l( 219 audio_module_handle_t module, 220 audio_devices_t devices) 221{ 222 // if module is 0, the request comes from an old policy manager and we should load 223 // well known modules 224 if (module == 0) { 225 ALOGW("findSuitableHwDev_l() loading well know audio hw modules"); 226 for (size_t i = 0; i < ARRAY_SIZE(audio_interfaces); i++) { 227 loadHwModule_l(audio_interfaces[i]); 228 } 229 // then try to find a module supporting the requested device. 230 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 231 AudioHwDevice *audioHwDevice = mAudioHwDevs.valueAt(i); 232 audio_hw_device_t *dev = audioHwDevice->hwDevice(); 233 if ((dev->get_supported_devices != NULL) && 234 (dev->get_supported_devices(dev) & devices) == devices) 235 return audioHwDevice; 236 } 237 } else { 238 // check a match for the requested module handle 239 AudioHwDevice *audioHwDevice = mAudioHwDevs.valueFor(module); 240 if (audioHwDevice != NULL) { 241 return audioHwDevice; 242 } 243 } 244 245 return NULL; 246} 247 248void AudioFlinger::dumpClients(int fd, const Vector<String16>& args) 249{ 250 const size_t SIZE = 256; 251 char buffer[SIZE]; 252 String8 result; 253 254 result.append("Clients:\n"); 255 for (size_t i = 0; i < mClients.size(); ++i) { 256 sp<Client> client = mClients.valueAt(i).promote(); 257 if (client != 0) { 258 snprintf(buffer, SIZE, " pid: %d\n", client->pid()); 259 result.append(buffer); 260 } 261 } 262 263 result.append("Global session refs:\n"); 264 result.append(" session pid count\n"); 265 for (size_t i = 0; i < mAudioSessionRefs.size(); i++) { 266 AudioSessionRef *r = mAudioSessionRefs[i]; 267 snprintf(buffer, SIZE, " %7d %3d %3d\n", r->mSessionid, r->mPid, r->mCnt); 268 result.append(buffer); 269 } 270 write(fd, result.string(), result.size()); 271} 272 273 274void AudioFlinger::dumpInternals(int fd, const Vector<String16>& args) 275{ 276 const size_t SIZE = 256; 277 char buffer[SIZE]; 278 String8 result; 279 hardware_call_state hardwareStatus = mHardwareStatus; 280 281 snprintf(buffer, SIZE, "Hardware status: %d\n" 282 "Standby Time mSec: %u\n", 283 hardwareStatus, 284 (uint32_t)(mStandbyTimeInNsecs / 1000000)); 285 result.append(buffer); 286 write(fd, result.string(), result.size()); 287} 288 289void AudioFlinger::dumpPermissionDenial(int fd, const Vector<String16>& args) 290{ 291 const size_t SIZE = 256; 292 char buffer[SIZE]; 293 String8 result; 294 snprintf(buffer, SIZE, "Permission Denial: " 295 "can't dump AudioFlinger from pid=%d, uid=%d\n", 296 IPCThreadState::self()->getCallingPid(), 297 IPCThreadState::self()->getCallingUid()); 298 result.append(buffer); 299 write(fd, result.string(), result.size()); 300} 301 302bool AudioFlinger::dumpTryLock(Mutex& mutex) 303{ 304 bool locked = false; 305 for (int i = 0; i < kDumpLockRetries; ++i) { 306 if (mutex.tryLock() == NO_ERROR) { 307 locked = true; 308 break; 309 } 310 usleep(kDumpLockSleepUs); 311 } 312 return locked; 313} 314 315status_t AudioFlinger::dump(int fd, const Vector<String16>& args) 316{ 317 if (!dumpAllowed()) { 318 dumpPermissionDenial(fd, args); 319 } else { 320 // get state of hardware lock 321 bool hardwareLocked = dumpTryLock(mHardwareLock); 322 if (!hardwareLocked) { 323 String8 result(kHardwareLockedString); 324 write(fd, result.string(), result.size()); 325 } else { 326 mHardwareLock.unlock(); 327 } 328 329 bool locked = dumpTryLock(mLock); 330 331 // failed to lock - AudioFlinger is probably deadlocked 332 if (!locked) { 333 String8 result(kDeadlockedString); 334 write(fd, result.string(), result.size()); 335 } 336 337 dumpClients(fd, args); 338 dumpInternals(fd, args); 339 340 // dump playback threads 341 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 342 mPlaybackThreads.valueAt(i)->dump(fd, args); 343 } 344 345 // dump record threads 346 for (size_t i = 0; i < mRecordThreads.size(); i++) { 347 mRecordThreads.valueAt(i)->dump(fd, args); 348 } 349 350 // dump all hardware devs 351 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 352 audio_hw_device_t *dev = mAudioHwDevs.valueAt(i)->hwDevice(); 353 dev->dump(dev, fd); 354 } 355 356#ifdef TEE_SINK 357 // dump the serially shared record tee sink 358 if (mRecordTeeSource != 0) { 359 dumpTee(fd, mRecordTeeSource); 360 } 361#endif 362 363 if (locked) { 364 mLock.unlock(); 365 } 366 367 // append a copy of media.log here by forwarding fd to it, but don't attempt 368 // to lookup the service if it's not running, as it will block for a second 369 if (mLogMemoryDealer != 0) { 370 sp<IBinder> binder = defaultServiceManager()->getService(String16("media.log")); 371 if (binder != 0) { 372 fdprintf(fd, "\nmedia.log:\n"); 373 Vector<String16> args; 374 binder->dump(fd, args); 375 } 376 } 377 } 378 return NO_ERROR; 379} 380 381sp<AudioFlinger::Client> AudioFlinger::registerPid_l(pid_t pid) 382{ 383 // If pid is already in the mClients wp<> map, then use that entry 384 // (for which promote() is always != 0), otherwise create a new entry and Client. 385 sp<Client> client = mClients.valueFor(pid).promote(); 386 if (client == 0) { 387 client = new Client(this, pid); 388 mClients.add(pid, client); 389 } 390 391 return client; 392} 393 394sp<NBLog::Writer> AudioFlinger::newWriter_l(size_t size, const char *name) 395{ 396 if (mLogMemoryDealer == 0) { 397 return new NBLog::Writer(); 398 } 399 sp<IMemory> shared = mLogMemoryDealer->allocate(NBLog::Timeline::sharedSize(size)); 400 sp<NBLog::Writer> writer = new NBLog::Writer(size, shared); 401 sp<IBinder> binder = defaultServiceManager()->getService(String16("media.log")); 402 if (binder != 0) { 403 interface_cast<IMediaLogService>(binder)->registerWriter(shared, size, name); 404 } 405 return writer; 406} 407 408void AudioFlinger::unregisterWriter(const sp<NBLog::Writer>& writer) 409{ 410 if (writer == 0) { 411 return; 412 } 413 sp<IMemory> iMemory(writer->getIMemory()); 414 if (iMemory == 0) { 415 return; 416 } 417 sp<IBinder> binder = defaultServiceManager()->getService(String16("media.log")); 418 if (binder != 0) { 419 interface_cast<IMediaLogService>(binder)->unregisterWriter(iMemory); 420 // Now the media.log remote reference to IMemory is gone. 421 // When our last local reference to IMemory also drops to zero, 422 // the IMemory destructor will deallocate the region from mMemoryDealer. 423 } 424} 425 426// IAudioFlinger interface 427 428 429sp<IAudioTrack> AudioFlinger::createTrack( 430 audio_stream_type_t streamType, 431 uint32_t sampleRate, 432 audio_format_t format, 433 audio_channel_mask_t channelMask, 434 size_t frameCount, 435 IAudioFlinger::track_flags_t *flags, 436 const sp<IMemory>& sharedBuffer, 437 audio_io_handle_t output, 438 pid_t tid, 439 int *sessionId, 440 status_t *status) 441{ 442 sp<PlaybackThread::Track> track; 443 sp<TrackHandle> trackHandle; 444 sp<Client> client; 445 status_t lStatus; 446 int lSessionId; 447 448 // client AudioTrack::set already implements AUDIO_STREAM_DEFAULT => AUDIO_STREAM_MUSIC, 449 // but if someone uses binder directly they could bypass that and cause us to crash 450 if (uint32_t(streamType) >= AUDIO_STREAM_CNT) { 451 ALOGE("createTrack() invalid stream type %d", streamType); 452 lStatus = BAD_VALUE; 453 goto Exit; 454 } 455 456 // client is responsible for conversion of 8-bit PCM to 16-bit PCM, 457 // and we don't yet support 8.24 or 32-bit PCM 458 if (audio_is_linear_pcm(format) && format != AUDIO_FORMAT_PCM_16_BIT) { 459 ALOGE("createTrack() invalid format %d", format); 460 lStatus = BAD_VALUE; 461 goto Exit; 462 } 463 464 { 465 Mutex::Autolock _l(mLock); 466 PlaybackThread *thread = checkPlaybackThread_l(output); 467 PlaybackThread *effectThread = NULL; 468 if (thread == NULL) { 469 ALOGE("no playback thread found for output handle %d", output); 470 lStatus = BAD_VALUE; 471 goto Exit; 472 } 473 474 pid_t pid = IPCThreadState::self()->getCallingPid(); 475 client = registerPid_l(pid); 476 477 ALOGV("createTrack() sessionId: %d", (sessionId == NULL) ? -2 : *sessionId); 478 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 479 // check if an effect chain with the same session ID is present on another 480 // output thread and move it here. 481 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 482 sp<PlaybackThread> t = mPlaybackThreads.valueAt(i); 483 if (mPlaybackThreads.keyAt(i) != output) { 484 uint32_t sessions = t->hasAudioSession(*sessionId); 485 if (sessions & PlaybackThread::EFFECT_SESSION) { 486 effectThread = t.get(); 487 break; 488 } 489 } 490 } 491 lSessionId = *sessionId; 492 } else { 493 // if no audio session id is provided, create one here 494 lSessionId = nextUniqueId(); 495 if (sessionId != NULL) { 496 *sessionId = lSessionId; 497 } 498 } 499 ALOGV("createTrack() lSessionId: %d", lSessionId); 500 501 track = thread->createTrack_l(client, streamType, sampleRate, format, 502 channelMask, frameCount, sharedBuffer, lSessionId, flags, tid, &lStatus); 503 504 // move effect chain to this output thread if an effect on same session was waiting 505 // for a track to be created 506 if (lStatus == NO_ERROR && effectThread != NULL) { 507 Mutex::Autolock _dl(thread->mLock); 508 Mutex::Autolock _sl(effectThread->mLock); 509 moveEffectChain_l(lSessionId, effectThread, thread, true); 510 } 511 512 // Look for sync events awaiting for a session to be used. 513 for (int i = 0; i < (int)mPendingSyncEvents.size(); i++) { 514 if (mPendingSyncEvents[i]->triggerSession() == lSessionId) { 515 if (thread->isValidSyncEvent(mPendingSyncEvents[i])) { 516 if (lStatus == NO_ERROR) { 517 (void) track->setSyncEvent(mPendingSyncEvents[i]); 518 } else { 519 mPendingSyncEvents[i]->cancel(); 520 } 521 mPendingSyncEvents.removeAt(i); 522 i--; 523 } 524 } 525 } 526 } 527 if (lStatus == NO_ERROR) { 528 trackHandle = new TrackHandle(track); 529 } else { 530 // remove local strong reference to Client before deleting the Track so that the Client 531 // destructor is called by the TrackBase destructor with mLock held 532 client.clear(); 533 track.clear(); 534 } 535 536Exit: 537 if (status != NULL) { 538 *status = lStatus; 539 } 540 return trackHandle; 541} 542 543uint32_t AudioFlinger::sampleRate(audio_io_handle_t output) const 544{ 545 Mutex::Autolock _l(mLock); 546 PlaybackThread *thread = checkPlaybackThread_l(output); 547 if (thread == NULL) { 548 ALOGW("sampleRate() unknown thread %d", output); 549 return 0; 550 } 551 return thread->sampleRate(); 552} 553 554int AudioFlinger::channelCount(audio_io_handle_t output) const 555{ 556 Mutex::Autolock _l(mLock); 557 PlaybackThread *thread = checkPlaybackThread_l(output); 558 if (thread == NULL) { 559 ALOGW("channelCount() unknown thread %d", output); 560 return 0; 561 } 562 return thread->channelCount(); 563} 564 565audio_format_t AudioFlinger::format(audio_io_handle_t output) const 566{ 567 Mutex::Autolock _l(mLock); 568 PlaybackThread *thread = checkPlaybackThread_l(output); 569 if (thread == NULL) { 570 ALOGW("format() unknown thread %d", output); 571 return AUDIO_FORMAT_INVALID; 572 } 573 return thread->format(); 574} 575 576size_t AudioFlinger::frameCount(audio_io_handle_t output) const 577{ 578 Mutex::Autolock _l(mLock); 579 PlaybackThread *thread = checkPlaybackThread_l(output); 580 if (thread == NULL) { 581 ALOGW("frameCount() unknown thread %d", output); 582 return 0; 583 } 584 // FIXME currently returns the normal mixer's frame count to avoid confusing legacy callers; 585 // should examine all callers and fix them to handle smaller counts 586 return thread->frameCount(); 587} 588 589uint32_t AudioFlinger::latency(audio_io_handle_t output) const 590{ 591 Mutex::Autolock _l(mLock); 592 PlaybackThread *thread = checkPlaybackThread_l(output); 593 if (thread == NULL) { 594 ALOGW("latency(): no playback thread found for output handle %d", output); 595 return 0; 596 } 597 return thread->latency(); 598} 599 600status_t AudioFlinger::setMasterVolume(float value) 601{ 602 status_t ret = initCheck(); 603 if (ret != NO_ERROR) { 604 return ret; 605 } 606 607 // check calling permissions 608 if (!settingsAllowed()) { 609 return PERMISSION_DENIED; 610 } 611 612 Mutex::Autolock _l(mLock); 613 mMasterVolume = value; 614 615 // Set master volume in the HALs which support it. 616 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 617 AutoMutex lock(mHardwareLock); 618 AudioHwDevice *dev = mAudioHwDevs.valueAt(i); 619 620 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 621 if (dev->canSetMasterVolume()) { 622 dev->hwDevice()->set_master_volume(dev->hwDevice(), value); 623 } 624 mHardwareStatus = AUDIO_HW_IDLE; 625 } 626 627 // Now set the master volume in each playback thread. Playback threads 628 // assigned to HALs which do not have master volume support will apply 629 // master volume during the mix operation. Threads with HALs which do 630 // support master volume will simply ignore the setting. 631 for (size_t i = 0; i < mPlaybackThreads.size(); i++) 632 mPlaybackThreads.valueAt(i)->setMasterVolume(value); 633 634 return NO_ERROR; 635} 636 637status_t AudioFlinger::setMode(audio_mode_t mode) 638{ 639 status_t ret = initCheck(); 640 if (ret != NO_ERROR) { 641 return ret; 642 } 643 644 // check calling permissions 645 if (!settingsAllowed()) { 646 return PERMISSION_DENIED; 647 } 648 if (uint32_t(mode) >= AUDIO_MODE_CNT) { 649 ALOGW("Illegal value: setMode(%d)", mode); 650 return BAD_VALUE; 651 } 652 653 { // scope for the lock 654 AutoMutex lock(mHardwareLock); 655 audio_hw_device_t *dev = mPrimaryHardwareDev->hwDevice(); 656 mHardwareStatus = AUDIO_HW_SET_MODE; 657 ret = dev->set_mode(dev, mode); 658 mHardwareStatus = AUDIO_HW_IDLE; 659 } 660 661 if (NO_ERROR == ret) { 662 Mutex::Autolock _l(mLock); 663 mMode = mode; 664 for (size_t i = 0; i < mPlaybackThreads.size(); i++) 665 mPlaybackThreads.valueAt(i)->setMode(mode); 666 } 667 668 return ret; 669} 670 671status_t AudioFlinger::setMicMute(bool state) 672{ 673 status_t ret = initCheck(); 674 if (ret != NO_ERROR) { 675 return ret; 676 } 677 678 // check calling permissions 679 if (!settingsAllowed()) { 680 return PERMISSION_DENIED; 681 } 682 683 AutoMutex lock(mHardwareLock); 684 audio_hw_device_t *dev = mPrimaryHardwareDev->hwDevice(); 685 mHardwareStatus = AUDIO_HW_SET_MIC_MUTE; 686 ret = dev->set_mic_mute(dev, state); 687 mHardwareStatus = AUDIO_HW_IDLE; 688 return ret; 689} 690 691bool AudioFlinger::getMicMute() const 692{ 693 status_t ret = initCheck(); 694 if (ret != NO_ERROR) { 695 return false; 696 } 697 698 bool state = AUDIO_MODE_INVALID; 699 AutoMutex lock(mHardwareLock); 700 audio_hw_device_t *dev = mPrimaryHardwareDev->hwDevice(); 701 mHardwareStatus = AUDIO_HW_GET_MIC_MUTE; 702 dev->get_mic_mute(dev, &state); 703 mHardwareStatus = AUDIO_HW_IDLE; 704 return state; 705} 706 707status_t AudioFlinger::setMasterMute(bool muted) 708{ 709 status_t ret = initCheck(); 710 if (ret != NO_ERROR) { 711 return ret; 712 } 713 714 // check calling permissions 715 if (!settingsAllowed()) { 716 return PERMISSION_DENIED; 717 } 718 719 Mutex::Autolock _l(mLock); 720 mMasterMute = muted; 721 722 // Set master mute in the HALs which support it. 723 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 724 AutoMutex lock(mHardwareLock); 725 AudioHwDevice *dev = mAudioHwDevs.valueAt(i); 726 727 mHardwareStatus = AUDIO_HW_SET_MASTER_MUTE; 728 if (dev->canSetMasterMute()) { 729 dev->hwDevice()->set_master_mute(dev->hwDevice(), muted); 730 } 731 mHardwareStatus = AUDIO_HW_IDLE; 732 } 733 734 // Now set the master mute in each playback thread. Playback threads 735 // assigned to HALs which do not have master mute support will apply master 736 // mute during the mix operation. Threads with HALs which do support master 737 // mute will simply ignore the setting. 738 for (size_t i = 0; i < mPlaybackThreads.size(); i++) 739 mPlaybackThreads.valueAt(i)->setMasterMute(muted); 740 741 return NO_ERROR; 742} 743 744float AudioFlinger::masterVolume() const 745{ 746 Mutex::Autolock _l(mLock); 747 return masterVolume_l(); 748} 749 750bool AudioFlinger::masterMute() const 751{ 752 Mutex::Autolock _l(mLock); 753 return masterMute_l(); 754} 755 756float AudioFlinger::masterVolume_l() const 757{ 758 return mMasterVolume; 759} 760 761bool AudioFlinger::masterMute_l() const 762{ 763 return mMasterMute; 764} 765 766status_t AudioFlinger::setStreamVolume(audio_stream_type_t stream, float value, 767 audio_io_handle_t output) 768{ 769 // check calling permissions 770 if (!settingsAllowed()) { 771 return PERMISSION_DENIED; 772 } 773 774 if (uint32_t(stream) >= AUDIO_STREAM_CNT) { 775 ALOGE("setStreamVolume() invalid stream %d", stream); 776 return BAD_VALUE; 777 } 778 779 AutoMutex lock(mLock); 780 PlaybackThread *thread = NULL; 781 if (output) { 782 thread = checkPlaybackThread_l(output); 783 if (thread == NULL) { 784 return BAD_VALUE; 785 } 786 } 787 788 mStreamTypes[stream].volume = value; 789 790 if (thread == NULL) { 791 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 792 mPlaybackThreads.valueAt(i)->setStreamVolume(stream, value); 793 } 794 } else { 795 thread->setStreamVolume(stream, value); 796 } 797 798 return NO_ERROR; 799} 800 801status_t AudioFlinger::setStreamMute(audio_stream_type_t stream, bool muted) 802{ 803 // check calling permissions 804 if (!settingsAllowed()) { 805 return PERMISSION_DENIED; 806 } 807 808 if (uint32_t(stream) >= AUDIO_STREAM_CNT || 809 uint32_t(stream) == AUDIO_STREAM_ENFORCED_AUDIBLE) { 810 ALOGE("setStreamMute() invalid stream %d", stream); 811 return BAD_VALUE; 812 } 813 814 AutoMutex lock(mLock); 815 mStreamTypes[stream].mute = muted; 816 for (uint32_t i = 0; i < mPlaybackThreads.size(); i++) 817 mPlaybackThreads.valueAt(i)->setStreamMute(stream, muted); 818 819 return NO_ERROR; 820} 821 822float AudioFlinger::streamVolume(audio_stream_type_t stream, audio_io_handle_t output) const 823{ 824 if (uint32_t(stream) >= AUDIO_STREAM_CNT) { 825 return 0.0f; 826 } 827 828 AutoMutex lock(mLock); 829 float volume; 830 if (output) { 831 PlaybackThread *thread = checkPlaybackThread_l(output); 832 if (thread == NULL) { 833 return 0.0f; 834 } 835 volume = thread->streamVolume(stream); 836 } else { 837 volume = streamVolume_l(stream); 838 } 839 840 return volume; 841} 842 843bool AudioFlinger::streamMute(audio_stream_type_t stream) const 844{ 845 if (uint32_t(stream) >= AUDIO_STREAM_CNT) { 846 return true; 847 } 848 849 AutoMutex lock(mLock); 850 return streamMute_l(stream); 851} 852 853status_t AudioFlinger::setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs) 854{ 855 ALOGV("setParameters(): io %d, keyvalue %s, calling pid %d", 856 ioHandle, keyValuePairs.string(), IPCThreadState::self()->getCallingPid()); 857 858 // check calling permissions 859 if (!settingsAllowed()) { 860 return PERMISSION_DENIED; 861 } 862 863 // ioHandle == 0 means the parameters are global to the audio hardware interface 864 if (ioHandle == 0) { 865 Mutex::Autolock _l(mLock); 866 status_t final_result = NO_ERROR; 867 { 868 AutoMutex lock(mHardwareLock); 869 mHardwareStatus = AUDIO_HW_SET_PARAMETER; 870 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 871 audio_hw_device_t *dev = mAudioHwDevs.valueAt(i)->hwDevice(); 872 status_t result = dev->set_parameters(dev, keyValuePairs.string()); 873 final_result = result ?: final_result; 874 } 875 mHardwareStatus = AUDIO_HW_IDLE; 876 } 877 // disable AEC and NS if the device is a BT SCO headset supporting those pre processings 878 AudioParameter param = AudioParameter(keyValuePairs); 879 String8 value; 880 if (param.get(String8(AUDIO_PARAMETER_KEY_BT_NREC), value) == NO_ERROR) { 881 bool btNrecIsOff = (value == AUDIO_PARAMETER_VALUE_OFF); 882 if (mBtNrecIsOff != btNrecIsOff) { 883 for (size_t i = 0; i < mRecordThreads.size(); i++) { 884 sp<RecordThread> thread = mRecordThreads.valueAt(i); 885 audio_devices_t device = thread->inDevice(); 886 bool suspend = audio_is_bluetooth_sco_device(device) && btNrecIsOff; 887 // collect all of the thread's session IDs 888 KeyedVector<int, bool> ids = thread->sessionIds(); 889 // suspend effects associated with those session IDs 890 for (size_t j = 0; j < ids.size(); ++j) { 891 int sessionId = ids.keyAt(j); 892 thread->setEffectSuspended(FX_IID_AEC, 893 suspend, 894 sessionId); 895 thread->setEffectSuspended(FX_IID_NS, 896 suspend, 897 sessionId); 898 } 899 } 900 mBtNrecIsOff = btNrecIsOff; 901 } 902 } 903 String8 screenState; 904 if (param.get(String8(AudioParameter::keyScreenState), screenState) == NO_ERROR) { 905 bool isOff = screenState == "off"; 906 if (isOff != (AudioFlinger::mScreenState & 1)) { 907 AudioFlinger::mScreenState = ((AudioFlinger::mScreenState & ~1) + 2) | isOff; 908 } 909 } 910 return final_result; 911 } 912 913 // hold a strong ref on thread in case closeOutput() or closeInput() is called 914 // and the thread is exited once the lock is released 915 sp<ThreadBase> thread; 916 { 917 Mutex::Autolock _l(mLock); 918 thread = checkPlaybackThread_l(ioHandle); 919 if (thread == 0) { 920 thread = checkRecordThread_l(ioHandle); 921 } else if (thread == primaryPlaybackThread_l()) { 922 // indicate output device change to all input threads for pre processing 923 AudioParameter param = AudioParameter(keyValuePairs); 924 int value; 925 if ((param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) && 926 (value != 0)) { 927 for (size_t i = 0; i < mRecordThreads.size(); i++) { 928 mRecordThreads.valueAt(i)->setParameters(keyValuePairs); 929 } 930 } 931 } 932 } 933 if (thread != 0) { 934 return thread->setParameters(keyValuePairs); 935 } 936 return BAD_VALUE; 937} 938 939String8 AudioFlinger::getParameters(audio_io_handle_t ioHandle, const String8& keys) const 940{ 941 ALOGVV("getParameters() io %d, keys %s, calling pid %d", 942 ioHandle, keys.string(), IPCThreadState::self()->getCallingPid()); 943 944 Mutex::Autolock _l(mLock); 945 946 if (ioHandle == 0) { 947 String8 out_s8; 948 949 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 950 char *s; 951 { 952 AutoMutex lock(mHardwareLock); 953 mHardwareStatus = AUDIO_HW_GET_PARAMETER; 954 audio_hw_device_t *dev = mAudioHwDevs.valueAt(i)->hwDevice(); 955 s = dev->get_parameters(dev, keys.string()); 956 mHardwareStatus = AUDIO_HW_IDLE; 957 } 958 out_s8 += String8(s ? s : ""); 959 free(s); 960 } 961 return out_s8; 962 } 963 964 PlaybackThread *playbackThread = checkPlaybackThread_l(ioHandle); 965 if (playbackThread != NULL) { 966 return playbackThread->getParameters(keys); 967 } 968 RecordThread *recordThread = checkRecordThread_l(ioHandle); 969 if (recordThread != NULL) { 970 return recordThread->getParameters(keys); 971 } 972 return String8(""); 973} 974 975size_t AudioFlinger::getInputBufferSize(uint32_t sampleRate, audio_format_t format, 976 audio_channel_mask_t channelMask) const 977{ 978 status_t ret = initCheck(); 979 if (ret != NO_ERROR) { 980 return 0; 981 } 982 983 AutoMutex lock(mHardwareLock); 984 mHardwareStatus = AUDIO_HW_GET_INPUT_BUFFER_SIZE; 985 struct audio_config config; 986 memset(&config, 0, sizeof(config)); 987 config.sample_rate = sampleRate; 988 config.channel_mask = channelMask; 989 config.format = format; 990 991 audio_hw_device_t *dev = mPrimaryHardwareDev->hwDevice(); 992 size_t size = dev->get_input_buffer_size(dev, &config); 993 mHardwareStatus = AUDIO_HW_IDLE; 994 return size; 995} 996 997unsigned int AudioFlinger::getInputFramesLost(audio_io_handle_t ioHandle) const 998{ 999 Mutex::Autolock _l(mLock); 1000 1001 RecordThread *recordThread = checkRecordThread_l(ioHandle); 1002 if (recordThread != NULL) { 1003 return recordThread->getInputFramesLost(); 1004 } 1005 return 0; 1006} 1007 1008status_t AudioFlinger::setVoiceVolume(float value) 1009{ 1010 status_t ret = initCheck(); 1011 if (ret != NO_ERROR) { 1012 return ret; 1013 } 1014 1015 // check calling permissions 1016 if (!settingsAllowed()) { 1017 return PERMISSION_DENIED; 1018 } 1019 1020 AutoMutex lock(mHardwareLock); 1021 audio_hw_device_t *dev = mPrimaryHardwareDev->hwDevice(); 1022 mHardwareStatus = AUDIO_HW_SET_VOICE_VOLUME; 1023 ret = dev->set_voice_volume(dev, value); 1024 mHardwareStatus = AUDIO_HW_IDLE; 1025 1026 return ret; 1027} 1028 1029status_t AudioFlinger::getRenderPosition(size_t *halFrames, size_t *dspFrames, 1030 audio_io_handle_t output) const 1031{ 1032 status_t status; 1033 1034 Mutex::Autolock _l(mLock); 1035 1036 PlaybackThread *playbackThread = checkPlaybackThread_l(output); 1037 if (playbackThread != NULL) { 1038 return playbackThread->getRenderPosition(halFrames, dspFrames); 1039 } 1040 1041 return BAD_VALUE; 1042} 1043 1044void AudioFlinger::registerClient(const sp<IAudioFlingerClient>& client) 1045{ 1046 1047 Mutex::Autolock _l(mLock); 1048 1049 pid_t pid = IPCThreadState::self()->getCallingPid(); 1050 if (mNotificationClients.indexOfKey(pid) < 0) { 1051 sp<NotificationClient> notificationClient = new NotificationClient(this, 1052 client, 1053 pid); 1054 ALOGV("registerClient() client %p, pid %d", notificationClient.get(), pid); 1055 1056 mNotificationClients.add(pid, notificationClient); 1057 1058 sp<IBinder> binder = client->asBinder(); 1059 binder->linkToDeath(notificationClient); 1060 1061 // the config change is always sent from playback or record threads to avoid deadlock 1062 // with AudioSystem::gLock 1063 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 1064 mPlaybackThreads.valueAt(i)->sendIoConfigEvent(AudioSystem::OUTPUT_OPENED); 1065 } 1066 1067 for (size_t i = 0; i < mRecordThreads.size(); i++) { 1068 mRecordThreads.valueAt(i)->sendIoConfigEvent(AudioSystem::INPUT_OPENED); 1069 } 1070 } 1071} 1072 1073void AudioFlinger::removeNotificationClient(pid_t pid) 1074{ 1075 Mutex::Autolock _l(mLock); 1076 1077 mNotificationClients.removeItem(pid); 1078 1079 ALOGV("%d died, releasing its sessions", pid); 1080 size_t num = mAudioSessionRefs.size(); 1081 bool removed = false; 1082 for (size_t i = 0; i< num; ) { 1083 AudioSessionRef *ref = mAudioSessionRefs.itemAt(i); 1084 ALOGV(" pid %d @ %d", ref->mPid, i); 1085 if (ref->mPid == pid) { 1086 ALOGV(" removing entry for pid %d session %d", pid, ref->mSessionid); 1087 mAudioSessionRefs.removeAt(i); 1088 delete ref; 1089 removed = true; 1090 num--; 1091 } else { 1092 i++; 1093 } 1094 } 1095 if (removed) { 1096 purgeStaleEffects_l(); 1097 } 1098} 1099 1100// audioConfigChanged_l() must be called with AudioFlinger::mLock held 1101void AudioFlinger::audioConfigChanged_l(int event, audio_io_handle_t ioHandle, const void *param2) 1102{ 1103 size_t size = mNotificationClients.size(); 1104 for (size_t i = 0; i < size; i++) { 1105 mNotificationClients.valueAt(i)->audioFlingerClient()->ioConfigChanged(event, ioHandle, 1106 param2); 1107 } 1108} 1109 1110// removeClient_l() must be called with AudioFlinger::mLock held 1111void AudioFlinger::removeClient_l(pid_t pid) 1112{ 1113 ALOGV("removeClient_l() pid %d, calling pid %d", pid, 1114 IPCThreadState::self()->getCallingPid()); 1115 mClients.removeItem(pid); 1116} 1117 1118// getEffectThread_l() must be called with AudioFlinger::mLock held 1119sp<AudioFlinger::PlaybackThread> AudioFlinger::getEffectThread_l(int sessionId, int EffectId) 1120{ 1121 sp<PlaybackThread> thread; 1122 1123 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 1124 if (mPlaybackThreads.valueAt(i)->getEffect(sessionId, EffectId) != 0) { 1125 ALOG_ASSERT(thread == 0); 1126 thread = mPlaybackThreads.valueAt(i); 1127 } 1128 } 1129 1130 return thread; 1131} 1132 1133 1134 1135// ---------------------------------------------------------------------------- 1136 1137AudioFlinger::Client::Client(const sp<AudioFlinger>& audioFlinger, pid_t pid) 1138 : RefBase(), 1139 mAudioFlinger(audioFlinger), 1140 // FIXME should be a "k" constant not hard-coded, in .h or ro. property, see 4 lines below 1141 mMemoryDealer(new MemoryDealer(1024*1024, "AudioFlinger::Client")), 1142 mPid(pid), 1143 mTimedTrackCount(0) 1144{ 1145 // 1 MB of address space is good for 32 tracks, 8 buffers each, 4 KB/buffer 1146} 1147 1148// Client destructor must be called with AudioFlinger::mLock held 1149AudioFlinger::Client::~Client() 1150{ 1151 mAudioFlinger->removeClient_l(mPid); 1152} 1153 1154sp<MemoryDealer> AudioFlinger::Client::heap() const 1155{ 1156 return mMemoryDealer; 1157} 1158 1159// Reserve one of the limited slots for a timed audio track associated 1160// with this client 1161bool AudioFlinger::Client::reserveTimedTrack() 1162{ 1163 const int kMaxTimedTracksPerClient = 4; 1164 1165 Mutex::Autolock _l(mTimedTrackLock); 1166 1167 if (mTimedTrackCount >= kMaxTimedTracksPerClient) { 1168 ALOGW("can not create timed track - pid %d has exceeded the limit", 1169 mPid); 1170 return false; 1171 } 1172 1173 mTimedTrackCount++; 1174 return true; 1175} 1176 1177// Release a slot for a timed audio track 1178void AudioFlinger::Client::releaseTimedTrack() 1179{ 1180 Mutex::Autolock _l(mTimedTrackLock); 1181 mTimedTrackCount--; 1182} 1183 1184// ---------------------------------------------------------------------------- 1185 1186AudioFlinger::NotificationClient::NotificationClient(const sp<AudioFlinger>& audioFlinger, 1187 const sp<IAudioFlingerClient>& client, 1188 pid_t pid) 1189 : mAudioFlinger(audioFlinger), mPid(pid), mAudioFlingerClient(client) 1190{ 1191} 1192 1193AudioFlinger::NotificationClient::~NotificationClient() 1194{ 1195} 1196 1197void AudioFlinger::NotificationClient::binderDied(const wp<IBinder>& who) 1198{ 1199 sp<NotificationClient> keep(this); 1200 mAudioFlinger->removeNotificationClient(mPid); 1201} 1202 1203 1204// ---------------------------------------------------------------------------- 1205 1206sp<IAudioRecord> AudioFlinger::openRecord( 1207 audio_io_handle_t input, 1208 uint32_t sampleRate, 1209 audio_format_t format, 1210 audio_channel_mask_t channelMask, 1211 size_t frameCount, 1212 IAudioFlinger::track_flags_t flags, 1213 pid_t tid, 1214 int *sessionId, 1215 status_t *status) 1216{ 1217 sp<RecordThread::RecordTrack> recordTrack; 1218 sp<RecordHandle> recordHandle; 1219 sp<Client> client; 1220 status_t lStatus; 1221 RecordThread *thread; 1222 size_t inFrameCount; 1223 int lSessionId; 1224 1225 // check calling permissions 1226 if (!recordingAllowed()) { 1227 lStatus = PERMISSION_DENIED; 1228 goto Exit; 1229 } 1230 1231 if (format != AUDIO_FORMAT_PCM_16_BIT) { 1232 ALOGE("openRecord() invalid format %d", format); 1233 lStatus = BAD_VALUE; 1234 goto Exit; 1235 } 1236 1237 // add client to list 1238 { // scope for mLock 1239 Mutex::Autolock _l(mLock); 1240 thread = checkRecordThread_l(input); 1241 if (thread == NULL) { 1242 lStatus = BAD_VALUE; 1243 goto Exit; 1244 } 1245 1246 pid_t pid = IPCThreadState::self()->getCallingPid(); 1247 client = registerPid_l(pid); 1248 1249 // If no audio session id is provided, create one here 1250 if (sessionId != NULL && *sessionId != AUDIO_SESSION_OUTPUT_MIX) { 1251 lSessionId = *sessionId; 1252 } else { 1253 lSessionId = nextUniqueId(); 1254 if (sessionId != NULL) { 1255 *sessionId = lSessionId; 1256 } 1257 } 1258 // create new record track. 1259 // The record track uses one track in mHardwareMixerThread by convention. 1260 recordTrack = thread->createRecordTrack_l(client, sampleRate, format, channelMask, 1261 frameCount, lSessionId, flags, tid, &lStatus); 1262 } 1263 if (lStatus != NO_ERROR) { 1264 // remove local strong reference to Client before deleting the RecordTrack so that the 1265 // Client destructor is called by the TrackBase destructor with mLock held 1266 client.clear(); 1267 recordTrack.clear(); 1268 goto Exit; 1269 } 1270 1271 // return to handle to client 1272 recordHandle = new RecordHandle(recordTrack); 1273 lStatus = NO_ERROR; 1274 1275Exit: 1276 if (status) { 1277 *status = lStatus; 1278 } 1279 return recordHandle; 1280} 1281 1282 1283 1284// ---------------------------------------------------------------------------- 1285 1286audio_module_handle_t AudioFlinger::loadHwModule(const char *name) 1287{ 1288 if (!settingsAllowed()) { 1289 return 0; 1290 } 1291 Mutex::Autolock _l(mLock); 1292 return loadHwModule_l(name); 1293} 1294 1295// loadHwModule_l() must be called with AudioFlinger::mLock held 1296audio_module_handle_t AudioFlinger::loadHwModule_l(const char *name) 1297{ 1298 for (size_t i = 0; i < mAudioHwDevs.size(); i++) { 1299 if (strncmp(mAudioHwDevs.valueAt(i)->moduleName(), name, strlen(name)) == 0) { 1300 ALOGW("loadHwModule() module %s already loaded", name); 1301 return mAudioHwDevs.keyAt(i); 1302 } 1303 } 1304 1305 audio_hw_device_t *dev; 1306 1307 int rc = load_audio_interface(name, &dev); 1308 if (rc) { 1309 ALOGI("loadHwModule() error %d loading module %s ", rc, name); 1310 return 0; 1311 } 1312 1313 mHardwareStatus = AUDIO_HW_INIT; 1314 rc = dev->init_check(dev); 1315 mHardwareStatus = AUDIO_HW_IDLE; 1316 if (rc) { 1317 ALOGI("loadHwModule() init check error %d for module %s ", rc, name); 1318 return 0; 1319 } 1320 1321 // Check and cache this HAL's level of support for master mute and master 1322 // volume. If this is the first HAL opened, and it supports the get 1323 // methods, use the initial values provided by the HAL as the current 1324 // master mute and volume settings. 1325 1326 AudioHwDevice::Flags flags = static_cast<AudioHwDevice::Flags>(0); 1327 { // scope for auto-lock pattern 1328 AutoMutex lock(mHardwareLock); 1329 1330 if (0 == mAudioHwDevs.size()) { 1331 mHardwareStatus = AUDIO_HW_GET_MASTER_VOLUME; 1332 if (NULL != dev->get_master_volume) { 1333 float mv; 1334 if (OK == dev->get_master_volume(dev, &mv)) { 1335 mMasterVolume = mv; 1336 } 1337 } 1338 1339 mHardwareStatus = AUDIO_HW_GET_MASTER_MUTE; 1340 if (NULL != dev->get_master_mute) { 1341 bool mm; 1342 if (OK == dev->get_master_mute(dev, &mm)) { 1343 mMasterMute = mm; 1344 } 1345 } 1346 } 1347 1348 mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME; 1349 if ((NULL != dev->set_master_volume) && 1350 (OK == dev->set_master_volume(dev, mMasterVolume))) { 1351 flags = static_cast<AudioHwDevice::Flags>(flags | 1352 AudioHwDevice::AHWD_CAN_SET_MASTER_VOLUME); 1353 } 1354 1355 mHardwareStatus = AUDIO_HW_SET_MASTER_MUTE; 1356 if ((NULL != dev->set_master_mute) && 1357 (OK == dev->set_master_mute(dev, mMasterMute))) { 1358 flags = static_cast<AudioHwDevice::Flags>(flags | 1359 AudioHwDevice::AHWD_CAN_SET_MASTER_MUTE); 1360 } 1361 1362 mHardwareStatus = AUDIO_HW_IDLE; 1363 } 1364 1365 audio_module_handle_t handle = nextUniqueId(); 1366 mAudioHwDevs.add(handle, new AudioHwDevice(name, dev, flags)); 1367 1368 ALOGI("loadHwModule() Loaded %s audio interface from %s (%s) handle %d", 1369 name, dev->common.module->name, dev->common.module->id, handle); 1370 1371 return handle; 1372 1373} 1374 1375// ---------------------------------------------------------------------------- 1376 1377uint32_t AudioFlinger::getPrimaryOutputSamplingRate() 1378{ 1379 Mutex::Autolock _l(mLock); 1380 PlaybackThread *thread = primaryPlaybackThread_l(); 1381 return thread != NULL ? thread->sampleRate() : 0; 1382} 1383 1384size_t AudioFlinger::getPrimaryOutputFrameCount() 1385{ 1386 Mutex::Autolock _l(mLock); 1387 PlaybackThread *thread = primaryPlaybackThread_l(); 1388 return thread != NULL ? thread->frameCountHAL() : 0; 1389} 1390 1391// ---------------------------------------------------------------------------- 1392 1393status_t AudioFlinger::setLowRamDevice(bool isLowRamDevice) 1394{ 1395 uid_t uid = IPCThreadState::self()->getCallingUid(); 1396 if (uid != AID_SYSTEM) { 1397 return PERMISSION_DENIED; 1398 } 1399 Mutex::Autolock _l(mLock); 1400 if (mIsDeviceTypeKnown) { 1401 return INVALID_OPERATION; 1402 } 1403 mIsLowRamDevice = isLowRamDevice; 1404 mIsDeviceTypeKnown = true; 1405 return NO_ERROR; 1406} 1407 1408// ---------------------------------------------------------------------------- 1409 1410audio_io_handle_t AudioFlinger::openOutput(audio_module_handle_t module, 1411 audio_devices_t *pDevices, 1412 uint32_t *pSamplingRate, 1413 audio_format_t *pFormat, 1414 audio_channel_mask_t *pChannelMask, 1415 uint32_t *pLatencyMs, 1416 audio_output_flags_t flags, 1417 const audio_offload_info_t *offloadInfo) 1418{ 1419 status_t status; 1420 PlaybackThread *thread = NULL; 1421 struct audio_config config; 1422 config.sample_rate = (pSamplingRate != NULL) ? *pSamplingRate : 0; 1423 config.channel_mask = (pChannelMask != NULL) ? *pChannelMask : 0; 1424 config.format = (pFormat != NULL) ? *pFormat : AUDIO_FORMAT_DEFAULT; 1425 if (offloadInfo) { 1426 config.offload_info = *offloadInfo; 1427 } 1428 1429 audio_stream_out_t *outStream = NULL; 1430 AudioHwDevice *outHwDev; 1431 1432 ALOGV("openOutput(), module %d Device %x, SamplingRate %d, Format %d, Channels %x, flags %x", 1433 module, 1434 (pDevices != NULL) ? *pDevices : 0, 1435 config.sample_rate, 1436 config.format, 1437 config.channel_mask, 1438 flags); 1439 1440 if (pDevices == NULL || *pDevices == 0) { 1441 return 0; 1442 } 1443 1444 Mutex::Autolock _l(mLock); 1445 1446 outHwDev = findSuitableHwDev_l(module, *pDevices); 1447 if (outHwDev == NULL) 1448 return 0; 1449 1450 audio_hw_device_t *hwDevHal = outHwDev->hwDevice(); 1451 audio_io_handle_t id = nextUniqueId(); 1452 1453 mHardwareStatus = AUDIO_HW_OUTPUT_OPEN; 1454 1455 status = hwDevHal->open_output_stream(hwDevHal, 1456 id, 1457 *pDevices, 1458 (audio_output_flags_t)flags, 1459 &config, 1460 &outStream); 1461 1462 mHardwareStatus = AUDIO_HW_IDLE; 1463 ALOGV("openOutput() openOutputStream returned output %p, SamplingRate %d, Format %d, " 1464 "Channels %x, status %d", 1465 outStream, 1466 config.sample_rate, 1467 config.format, 1468 config.channel_mask, 1469 status); 1470 1471 if (status == NO_ERROR && outStream != NULL) { 1472 AudioStreamOut *output = new AudioStreamOut(outHwDev, outStream); 1473 1474 if ((flags & AUDIO_OUTPUT_FLAG_DIRECT) || 1475 (config.format != AUDIO_FORMAT_PCM_16_BIT) || 1476 (config.channel_mask != AUDIO_CHANNEL_OUT_STEREO)) { 1477 thread = new DirectOutputThread(this, output, id, *pDevices); 1478 ALOGV("openOutput() created direct output: ID %d thread %p", id, thread); 1479 } else { 1480 thread = new MixerThread(this, output, id, *pDevices); 1481 ALOGV("openOutput() created mixer output: ID %d thread %p", id, thread); 1482 } 1483 mPlaybackThreads.add(id, thread); 1484 1485 if (pSamplingRate != NULL) { 1486 *pSamplingRate = config.sample_rate; 1487 } 1488 if (pFormat != NULL) { 1489 *pFormat = config.format; 1490 } 1491 if (pChannelMask != NULL) { 1492 *pChannelMask = config.channel_mask; 1493 } 1494 if (pLatencyMs != NULL) { 1495 *pLatencyMs = thread->latency(); 1496 } 1497 1498 // notify client processes of the new output creation 1499 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 1500 1501 // the first primary output opened designates the primary hw device 1502 if ((mPrimaryHardwareDev == NULL) && (flags & AUDIO_OUTPUT_FLAG_PRIMARY)) { 1503 ALOGI("Using module %d has the primary audio interface", module); 1504 mPrimaryHardwareDev = outHwDev; 1505 1506 AutoMutex lock(mHardwareLock); 1507 mHardwareStatus = AUDIO_HW_SET_MODE; 1508 hwDevHal->set_mode(hwDevHal, mMode); 1509 mHardwareStatus = AUDIO_HW_IDLE; 1510 } 1511 return id; 1512 } 1513 1514 return 0; 1515} 1516 1517audio_io_handle_t AudioFlinger::openDuplicateOutput(audio_io_handle_t output1, 1518 audio_io_handle_t output2) 1519{ 1520 Mutex::Autolock _l(mLock); 1521 MixerThread *thread1 = checkMixerThread_l(output1); 1522 MixerThread *thread2 = checkMixerThread_l(output2); 1523 1524 if (thread1 == NULL || thread2 == NULL) { 1525 ALOGW("openDuplicateOutput() wrong output mixer type for output %d or %d", output1, 1526 output2); 1527 return 0; 1528 } 1529 1530 audio_io_handle_t id = nextUniqueId(); 1531 DuplicatingThread *thread = new DuplicatingThread(this, thread1, id); 1532 thread->addOutputTrack(thread2); 1533 mPlaybackThreads.add(id, thread); 1534 // notify client processes of the new output creation 1535 thread->audioConfigChanged_l(AudioSystem::OUTPUT_OPENED); 1536 return id; 1537} 1538 1539status_t AudioFlinger::closeOutput(audio_io_handle_t output) 1540{ 1541 return closeOutput_nonvirtual(output); 1542} 1543 1544status_t AudioFlinger::closeOutput_nonvirtual(audio_io_handle_t output) 1545{ 1546 // keep strong reference on the playback thread so that 1547 // it is not destroyed while exit() is executed 1548 sp<PlaybackThread> thread; 1549 { 1550 Mutex::Autolock _l(mLock); 1551 thread = checkPlaybackThread_l(output); 1552 if (thread == NULL) { 1553 return BAD_VALUE; 1554 } 1555 1556 ALOGV("closeOutput() %d", output); 1557 1558 if (thread->type() == ThreadBase::MIXER) { 1559 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 1560 if (mPlaybackThreads.valueAt(i)->type() == ThreadBase::DUPLICATING) { 1561 DuplicatingThread *dupThread = 1562 (DuplicatingThread *)mPlaybackThreads.valueAt(i).get(); 1563 dupThread->removeOutputTrack((MixerThread *)thread.get()); 1564 } 1565 } 1566 } 1567 audioConfigChanged_l(AudioSystem::OUTPUT_CLOSED, output, NULL); 1568 mPlaybackThreads.removeItem(output); 1569 } 1570 thread->exit(); 1571 // The thread entity (active unit of execution) is no longer running here, 1572 // but the ThreadBase container still exists. 1573 1574 if (thread->type() != ThreadBase::DUPLICATING) { 1575 AudioStreamOut *out = thread->clearOutput(); 1576 ALOG_ASSERT(out != NULL, "out shouldn't be NULL"); 1577 // from now on thread->mOutput is NULL 1578 out->hwDev()->close_output_stream(out->hwDev(), out->stream); 1579 delete out; 1580 } 1581 return NO_ERROR; 1582} 1583 1584status_t AudioFlinger::suspendOutput(audio_io_handle_t output) 1585{ 1586 Mutex::Autolock _l(mLock); 1587 PlaybackThread *thread = checkPlaybackThread_l(output); 1588 1589 if (thread == NULL) { 1590 return BAD_VALUE; 1591 } 1592 1593 ALOGV("suspendOutput() %d", output); 1594 thread->suspend(); 1595 1596 return NO_ERROR; 1597} 1598 1599status_t AudioFlinger::restoreOutput(audio_io_handle_t output) 1600{ 1601 Mutex::Autolock _l(mLock); 1602 PlaybackThread *thread = checkPlaybackThread_l(output); 1603 1604 if (thread == NULL) { 1605 return BAD_VALUE; 1606 } 1607 1608 ALOGV("restoreOutput() %d", output); 1609 1610 thread->restore(); 1611 1612 return NO_ERROR; 1613} 1614 1615audio_io_handle_t AudioFlinger::openInput(audio_module_handle_t module, 1616 audio_devices_t *pDevices, 1617 uint32_t *pSamplingRate, 1618 audio_format_t *pFormat, 1619 audio_channel_mask_t *pChannelMask) 1620{ 1621 status_t status; 1622 RecordThread *thread = NULL; 1623 struct audio_config config; 1624 config.sample_rate = (pSamplingRate != NULL) ? *pSamplingRate : 0; 1625 config.channel_mask = (pChannelMask != NULL) ? *pChannelMask : 0; 1626 config.format = (pFormat != NULL) ? *pFormat : AUDIO_FORMAT_DEFAULT; 1627 1628 uint32_t reqSamplingRate = config.sample_rate; 1629 audio_format_t reqFormat = config.format; 1630 audio_channel_mask_t reqChannels = config.channel_mask; 1631 audio_stream_in_t *inStream = NULL; 1632 AudioHwDevice *inHwDev; 1633 1634 if (pDevices == NULL || *pDevices == 0) { 1635 return 0; 1636 } 1637 1638 Mutex::Autolock _l(mLock); 1639 1640 inHwDev = findSuitableHwDev_l(module, *pDevices); 1641 if (inHwDev == NULL) 1642 return 0; 1643 1644 audio_hw_device_t *inHwHal = inHwDev->hwDevice(); 1645 audio_io_handle_t id = nextUniqueId(); 1646 1647 status = inHwHal->open_input_stream(inHwHal, id, *pDevices, &config, 1648 &inStream); 1649 ALOGV("openInput() openInputStream returned input %p, SamplingRate %d, Format %d, Channels %x, " 1650 "status %d", 1651 inStream, 1652 config.sample_rate, 1653 config.format, 1654 config.channel_mask, 1655 status); 1656 1657 // If the input could not be opened with the requested parameters and we can handle the 1658 // conversion internally, try to open again with the proposed parameters. The AudioFlinger can 1659 // resample the input and do mono to stereo or stereo to mono conversions on 16 bit PCM inputs. 1660 if (status == BAD_VALUE && 1661 reqFormat == config.format && config.format == AUDIO_FORMAT_PCM_16_BIT && 1662 (config.sample_rate <= 2 * reqSamplingRate) && 1663 (popcount(config.channel_mask) <= FCC_2) && (popcount(reqChannels) <= FCC_2)) { 1664 ALOGV("openInput() reopening with proposed sampling rate and channel mask"); 1665 inStream = NULL; 1666 status = inHwHal->open_input_stream(inHwHal, id, *pDevices, &config, &inStream); 1667 } 1668 1669 if (status == NO_ERROR && inStream != NULL) { 1670 1671#ifdef TEE_SINK 1672 // Try to re-use most recently used Pipe to archive a copy of input for dumpsys, 1673 // or (re-)create if current Pipe is idle and does not match the new format 1674 sp<NBAIO_Sink> teeSink; 1675 enum { 1676 TEE_SINK_NO, // don't copy input 1677 TEE_SINK_NEW, // copy input using a new pipe 1678 TEE_SINK_OLD, // copy input using an existing pipe 1679 } kind; 1680 NBAIO_Format format = Format_from_SR_C(inStream->common.get_sample_rate(&inStream->common), 1681 popcount(inStream->common.get_channels(&inStream->common))); 1682 if (!mTeeSinkInputEnabled) { 1683 kind = TEE_SINK_NO; 1684 } else if (format == Format_Invalid) { 1685 kind = TEE_SINK_NO; 1686 } else if (mRecordTeeSink == 0) { 1687 kind = TEE_SINK_NEW; 1688 } else if (mRecordTeeSink->getStrongCount() != 1) { 1689 kind = TEE_SINK_NO; 1690 } else if (format == mRecordTeeSink->format()) { 1691 kind = TEE_SINK_OLD; 1692 } else { 1693 kind = TEE_SINK_NEW; 1694 } 1695 switch (kind) { 1696 case TEE_SINK_NEW: { 1697 Pipe *pipe = new Pipe(mTeeSinkInputFrames, format); 1698 size_t numCounterOffers = 0; 1699 const NBAIO_Format offers[1] = {format}; 1700 ssize_t index = pipe->negotiate(offers, 1, NULL, numCounterOffers); 1701 ALOG_ASSERT(index == 0); 1702 PipeReader *pipeReader = new PipeReader(*pipe); 1703 numCounterOffers = 0; 1704 index = pipeReader->negotiate(offers, 1, NULL, numCounterOffers); 1705 ALOG_ASSERT(index == 0); 1706 mRecordTeeSink = pipe; 1707 mRecordTeeSource = pipeReader; 1708 teeSink = pipe; 1709 } 1710 break; 1711 case TEE_SINK_OLD: 1712 teeSink = mRecordTeeSink; 1713 break; 1714 case TEE_SINK_NO: 1715 default: 1716 break; 1717 } 1718#endif 1719 1720 AudioStreamIn *input = new AudioStreamIn(inHwDev, inStream); 1721 1722 // Start record thread 1723 // RecorThread require both input and output device indication to forward to audio 1724 // pre processing modules 1725 thread = new RecordThread(this, 1726 input, 1727 reqSamplingRate, 1728 reqChannels, 1729 id, 1730 primaryOutputDevice_l(), 1731 *pDevices 1732#ifdef TEE_SINK 1733 , teeSink 1734#endif 1735 ); 1736 mRecordThreads.add(id, thread); 1737 ALOGV("openInput() created record thread: ID %d thread %p", id, thread); 1738 if (pSamplingRate != NULL) { 1739 *pSamplingRate = reqSamplingRate; 1740 } 1741 if (pFormat != NULL) { 1742 *pFormat = config.format; 1743 } 1744 if (pChannelMask != NULL) { 1745 *pChannelMask = reqChannels; 1746 } 1747 1748 // notify client processes of the new input creation 1749 thread->audioConfigChanged_l(AudioSystem::INPUT_OPENED); 1750 return id; 1751 } 1752 1753 return 0; 1754} 1755 1756status_t AudioFlinger::closeInput(audio_io_handle_t input) 1757{ 1758 return closeInput_nonvirtual(input); 1759} 1760 1761status_t AudioFlinger::closeInput_nonvirtual(audio_io_handle_t input) 1762{ 1763 // keep strong reference on the record thread so that 1764 // it is not destroyed while exit() is executed 1765 sp<RecordThread> thread; 1766 { 1767 Mutex::Autolock _l(mLock); 1768 thread = checkRecordThread_l(input); 1769 if (thread == 0) { 1770 return BAD_VALUE; 1771 } 1772 1773 ALOGV("closeInput() %d", input); 1774 audioConfigChanged_l(AudioSystem::INPUT_CLOSED, input, NULL); 1775 mRecordThreads.removeItem(input); 1776 } 1777 thread->exit(); 1778 // The thread entity (active unit of execution) is no longer running here, 1779 // but the ThreadBase container still exists. 1780 1781 AudioStreamIn *in = thread->clearInput(); 1782 ALOG_ASSERT(in != NULL, "in shouldn't be NULL"); 1783 // from now on thread->mInput is NULL 1784 in->hwDev()->close_input_stream(in->hwDev(), in->stream); 1785 delete in; 1786 1787 return NO_ERROR; 1788} 1789 1790status_t AudioFlinger::setStreamOutput(audio_stream_type_t stream, audio_io_handle_t output) 1791{ 1792 Mutex::Autolock _l(mLock); 1793 ALOGV("setStreamOutput() stream %d to output %d", stream, output); 1794 1795 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 1796 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 1797 thread->invalidateTracks(stream); 1798 } 1799 1800 return NO_ERROR; 1801} 1802 1803 1804int AudioFlinger::newAudioSessionId() 1805{ 1806 return nextUniqueId(); 1807} 1808 1809void AudioFlinger::acquireAudioSessionId(int audioSession) 1810{ 1811 Mutex::Autolock _l(mLock); 1812 pid_t caller = IPCThreadState::self()->getCallingPid(); 1813 ALOGV("acquiring %d from %d", audioSession, caller); 1814 size_t num = mAudioSessionRefs.size(); 1815 for (size_t i = 0; i< num; i++) { 1816 AudioSessionRef *ref = mAudioSessionRefs.editItemAt(i); 1817 if (ref->mSessionid == audioSession && ref->mPid == caller) { 1818 ref->mCnt++; 1819 ALOGV(" incremented refcount to %d", ref->mCnt); 1820 return; 1821 } 1822 } 1823 mAudioSessionRefs.push(new AudioSessionRef(audioSession, caller)); 1824 ALOGV(" added new entry for %d", audioSession); 1825} 1826 1827void AudioFlinger::releaseAudioSessionId(int audioSession) 1828{ 1829 Mutex::Autolock _l(mLock); 1830 pid_t caller = IPCThreadState::self()->getCallingPid(); 1831 ALOGV("releasing %d from %d", audioSession, caller); 1832 size_t num = mAudioSessionRefs.size(); 1833 for (size_t i = 0; i< num; i++) { 1834 AudioSessionRef *ref = mAudioSessionRefs.itemAt(i); 1835 if (ref->mSessionid == audioSession && ref->mPid == caller) { 1836 ref->mCnt--; 1837 ALOGV(" decremented refcount to %d", ref->mCnt); 1838 if (ref->mCnt == 0) { 1839 mAudioSessionRefs.removeAt(i); 1840 delete ref; 1841 purgeStaleEffects_l(); 1842 } 1843 return; 1844 } 1845 } 1846 ALOGW("session id %d not found for pid %d", audioSession, caller); 1847} 1848 1849void AudioFlinger::purgeStaleEffects_l() { 1850 1851 ALOGV("purging stale effects"); 1852 1853 Vector< sp<EffectChain> > chains; 1854 1855 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 1856 sp<PlaybackThread> t = mPlaybackThreads.valueAt(i); 1857 for (size_t j = 0; j < t->mEffectChains.size(); j++) { 1858 sp<EffectChain> ec = t->mEffectChains[j]; 1859 if (ec->sessionId() > AUDIO_SESSION_OUTPUT_MIX) { 1860 chains.push(ec); 1861 } 1862 } 1863 } 1864 for (size_t i = 0; i < mRecordThreads.size(); i++) { 1865 sp<RecordThread> t = mRecordThreads.valueAt(i); 1866 for (size_t j = 0; j < t->mEffectChains.size(); j++) { 1867 sp<EffectChain> ec = t->mEffectChains[j]; 1868 chains.push(ec); 1869 } 1870 } 1871 1872 for (size_t i = 0; i < chains.size(); i++) { 1873 sp<EffectChain> ec = chains[i]; 1874 int sessionid = ec->sessionId(); 1875 sp<ThreadBase> t = ec->mThread.promote(); 1876 if (t == 0) { 1877 continue; 1878 } 1879 size_t numsessionrefs = mAudioSessionRefs.size(); 1880 bool found = false; 1881 for (size_t k = 0; k < numsessionrefs; k++) { 1882 AudioSessionRef *ref = mAudioSessionRefs.itemAt(k); 1883 if (ref->mSessionid == sessionid) { 1884 ALOGV(" session %d still exists for %d with %d refs", 1885 sessionid, ref->mPid, ref->mCnt); 1886 found = true; 1887 break; 1888 } 1889 } 1890 if (!found) { 1891 Mutex::Autolock _l (t->mLock); 1892 // remove all effects from the chain 1893 while (ec->mEffects.size()) { 1894 sp<EffectModule> effect = ec->mEffects[0]; 1895 effect->unPin(); 1896 t->removeEffect_l(effect); 1897 if (effect->purgeHandles()) { 1898 t->checkSuspendOnEffectEnabled_l(effect, false, effect->sessionId()); 1899 } 1900 AudioSystem::unregisterEffect(effect->id()); 1901 } 1902 } 1903 } 1904 return; 1905} 1906 1907// checkPlaybackThread_l() must be called with AudioFlinger::mLock held 1908AudioFlinger::PlaybackThread *AudioFlinger::checkPlaybackThread_l(audio_io_handle_t output) const 1909{ 1910 return mPlaybackThreads.valueFor(output).get(); 1911} 1912 1913// checkMixerThread_l() must be called with AudioFlinger::mLock held 1914AudioFlinger::MixerThread *AudioFlinger::checkMixerThread_l(audio_io_handle_t output) const 1915{ 1916 PlaybackThread *thread = checkPlaybackThread_l(output); 1917 return thread != NULL && thread->type() != ThreadBase::DIRECT ? (MixerThread *) thread : NULL; 1918} 1919 1920// checkRecordThread_l() must be called with AudioFlinger::mLock held 1921AudioFlinger::RecordThread *AudioFlinger::checkRecordThread_l(audio_io_handle_t input) const 1922{ 1923 return mRecordThreads.valueFor(input).get(); 1924} 1925 1926uint32_t AudioFlinger::nextUniqueId() 1927{ 1928 return android_atomic_inc(&mNextUniqueId); 1929} 1930 1931AudioFlinger::PlaybackThread *AudioFlinger::primaryPlaybackThread_l() const 1932{ 1933 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 1934 PlaybackThread *thread = mPlaybackThreads.valueAt(i).get(); 1935 AudioStreamOut *output = thread->getOutput(); 1936 if (output != NULL && output->audioHwDev == mPrimaryHardwareDev) { 1937 return thread; 1938 } 1939 } 1940 return NULL; 1941} 1942 1943audio_devices_t AudioFlinger::primaryOutputDevice_l() const 1944{ 1945 PlaybackThread *thread = primaryPlaybackThread_l(); 1946 1947 if (thread == NULL) { 1948 return 0; 1949 } 1950 1951 return thread->outDevice(); 1952} 1953 1954sp<AudioFlinger::SyncEvent> AudioFlinger::createSyncEvent(AudioSystem::sync_event_t type, 1955 int triggerSession, 1956 int listenerSession, 1957 sync_event_callback_t callBack, 1958 void *cookie) 1959{ 1960 Mutex::Autolock _l(mLock); 1961 1962 sp<SyncEvent> event = new SyncEvent(type, triggerSession, listenerSession, callBack, cookie); 1963 status_t playStatus = NAME_NOT_FOUND; 1964 status_t recStatus = NAME_NOT_FOUND; 1965 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 1966 playStatus = mPlaybackThreads.valueAt(i)->setSyncEvent(event); 1967 if (playStatus == NO_ERROR) { 1968 return event; 1969 } 1970 } 1971 for (size_t i = 0; i < mRecordThreads.size(); i++) { 1972 recStatus = mRecordThreads.valueAt(i)->setSyncEvent(event); 1973 if (recStatus == NO_ERROR) { 1974 return event; 1975 } 1976 } 1977 if (playStatus == NAME_NOT_FOUND || recStatus == NAME_NOT_FOUND) { 1978 mPendingSyncEvents.add(event); 1979 } else { 1980 ALOGV("createSyncEvent() invalid event %d", event->type()); 1981 event.clear(); 1982 } 1983 return event; 1984} 1985 1986// ---------------------------------------------------------------------------- 1987// Effect management 1988// ---------------------------------------------------------------------------- 1989 1990 1991status_t AudioFlinger::queryNumberEffects(uint32_t *numEffects) const 1992{ 1993 Mutex::Autolock _l(mLock); 1994 return EffectQueryNumberEffects(numEffects); 1995} 1996 1997status_t AudioFlinger::queryEffect(uint32_t index, effect_descriptor_t *descriptor) const 1998{ 1999 Mutex::Autolock _l(mLock); 2000 return EffectQueryEffect(index, descriptor); 2001} 2002 2003status_t AudioFlinger::getEffectDescriptor(const effect_uuid_t *pUuid, 2004 effect_descriptor_t *descriptor) const 2005{ 2006 Mutex::Autolock _l(mLock); 2007 return EffectGetDescriptor(pUuid, descriptor); 2008} 2009 2010 2011sp<IEffect> AudioFlinger::createEffect( 2012 effect_descriptor_t *pDesc, 2013 const sp<IEffectClient>& effectClient, 2014 int32_t priority, 2015 audio_io_handle_t io, 2016 int sessionId, 2017 status_t *status, 2018 int *id, 2019 int *enabled) 2020{ 2021 status_t lStatus = NO_ERROR; 2022 sp<EffectHandle> handle; 2023 effect_descriptor_t desc; 2024 2025 pid_t pid = IPCThreadState::self()->getCallingPid(); 2026 ALOGV("createEffect pid %d, effectClient %p, priority %d, sessionId %d, io %d", 2027 pid, effectClient.get(), priority, sessionId, io); 2028 2029 if (pDesc == NULL) { 2030 lStatus = BAD_VALUE; 2031 goto Exit; 2032 } 2033 2034 // check audio settings permission for global effects 2035 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && !settingsAllowed()) { 2036 lStatus = PERMISSION_DENIED; 2037 goto Exit; 2038 } 2039 2040 // Session AUDIO_SESSION_OUTPUT_STAGE is reserved for output stage effects 2041 // that can only be created by audio policy manager (running in same process) 2042 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE && getpid_cached != pid) { 2043 lStatus = PERMISSION_DENIED; 2044 goto Exit; 2045 } 2046 2047 if (io == 0) { 2048 if (sessionId == AUDIO_SESSION_OUTPUT_STAGE) { 2049 // output must be specified by AudioPolicyManager when using session 2050 // AUDIO_SESSION_OUTPUT_STAGE 2051 lStatus = BAD_VALUE; 2052 goto Exit; 2053 } else if (sessionId == AUDIO_SESSION_OUTPUT_MIX) { 2054 // if the output returned by getOutputForEffect() is removed before we lock the 2055 // mutex below, the call to checkPlaybackThread_l(io) below will detect it 2056 // and we will exit safely 2057 io = AudioSystem::getOutputForEffect(&desc); 2058 } 2059 } 2060 2061 { 2062 Mutex::Autolock _l(mLock); 2063 2064 2065 if (!EffectIsNullUuid(&pDesc->uuid)) { 2066 // if uuid is specified, request effect descriptor 2067 lStatus = EffectGetDescriptor(&pDesc->uuid, &desc); 2068 if (lStatus < 0) { 2069 ALOGW("createEffect() error %d from EffectGetDescriptor", lStatus); 2070 goto Exit; 2071 } 2072 } else { 2073 // if uuid is not specified, look for an available implementation 2074 // of the required type in effect factory 2075 if (EffectIsNullUuid(&pDesc->type)) { 2076 ALOGW("createEffect() no effect type"); 2077 lStatus = BAD_VALUE; 2078 goto Exit; 2079 } 2080 uint32_t numEffects = 0; 2081 effect_descriptor_t d; 2082 d.flags = 0; // prevent compiler warning 2083 bool found = false; 2084 2085 lStatus = EffectQueryNumberEffects(&numEffects); 2086 if (lStatus < 0) { 2087 ALOGW("createEffect() error %d from EffectQueryNumberEffects", lStatus); 2088 goto Exit; 2089 } 2090 for (uint32_t i = 0; i < numEffects; i++) { 2091 lStatus = EffectQueryEffect(i, &desc); 2092 if (lStatus < 0) { 2093 ALOGW("createEffect() error %d from EffectQueryEffect", lStatus); 2094 continue; 2095 } 2096 if (memcmp(&desc.type, &pDesc->type, sizeof(effect_uuid_t)) == 0) { 2097 // If matching type found save effect descriptor. If the session is 2098 // 0 and the effect is not auxiliary, continue enumeration in case 2099 // an auxiliary version of this effect type is available 2100 found = true; 2101 d = desc; 2102 if (sessionId != AUDIO_SESSION_OUTPUT_MIX || 2103 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 2104 break; 2105 } 2106 } 2107 } 2108 if (!found) { 2109 lStatus = BAD_VALUE; 2110 ALOGW("createEffect() effect not found"); 2111 goto Exit; 2112 } 2113 // For same effect type, chose auxiliary version over insert version if 2114 // connect to output mix (Compliance to OpenSL ES) 2115 if (sessionId == AUDIO_SESSION_OUTPUT_MIX && 2116 (d.flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_AUXILIARY) { 2117 desc = d; 2118 } 2119 } 2120 2121 // Do not allow auxiliary effects on a session different from 0 (output mix) 2122 if (sessionId != AUDIO_SESSION_OUTPUT_MIX && 2123 (desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) { 2124 lStatus = INVALID_OPERATION; 2125 goto Exit; 2126 } 2127 2128 // check recording permission for visualizer 2129 if ((memcmp(&desc.type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0) && 2130 !recordingAllowed()) { 2131 lStatus = PERMISSION_DENIED; 2132 goto Exit; 2133 } 2134 2135 // return effect descriptor 2136 *pDesc = desc; 2137 2138 // If output is not specified try to find a matching audio session ID in one of the 2139 // output threads. 2140 // If output is 0 here, sessionId is neither SESSION_OUTPUT_STAGE nor SESSION_OUTPUT_MIX 2141 // because of code checking output when entering the function. 2142 // Note: io is never 0 when creating an effect on an input 2143 if (io == 0) { 2144 // look for the thread where the specified audio session is present 2145 for (size_t i = 0; i < mPlaybackThreads.size(); i++) { 2146 if (mPlaybackThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 2147 io = mPlaybackThreads.keyAt(i); 2148 break; 2149 } 2150 } 2151 if (io == 0) { 2152 for (size_t i = 0; i < mRecordThreads.size(); i++) { 2153 if (mRecordThreads.valueAt(i)->hasAudioSession(sessionId) != 0) { 2154 io = mRecordThreads.keyAt(i); 2155 break; 2156 } 2157 } 2158 } 2159 // If no output thread contains the requested session ID, default to 2160 // first output. The effect chain will be moved to the correct output 2161 // thread when a track with the same session ID is created 2162 if (io == 0 && mPlaybackThreads.size()) { 2163 io = mPlaybackThreads.keyAt(0); 2164 } 2165 ALOGV("createEffect() got io %d for effect %s", io, desc.name); 2166 } 2167 ThreadBase *thread = checkRecordThread_l(io); 2168 if (thread == NULL) { 2169 thread = checkPlaybackThread_l(io); 2170 if (thread == NULL) { 2171 ALOGE("createEffect() unknown output thread"); 2172 lStatus = BAD_VALUE; 2173 goto Exit; 2174 } 2175 } 2176 2177 sp<Client> client = registerPid_l(pid); 2178 2179 // create effect on selected output thread 2180 handle = thread->createEffect_l(client, effectClient, priority, sessionId, 2181 &desc, enabled, &lStatus); 2182 if (handle != 0 && id != NULL) { 2183 *id = handle->id(); 2184 } 2185 } 2186 2187Exit: 2188 if (status != NULL) { 2189 *status = lStatus; 2190 } 2191 return handle; 2192} 2193 2194status_t AudioFlinger::moveEffects(int sessionId, audio_io_handle_t srcOutput, 2195 audio_io_handle_t dstOutput) 2196{ 2197 ALOGV("moveEffects() session %d, srcOutput %d, dstOutput %d", 2198 sessionId, srcOutput, dstOutput); 2199 Mutex::Autolock _l(mLock); 2200 if (srcOutput == dstOutput) { 2201 ALOGW("moveEffects() same dst and src outputs %d", dstOutput); 2202 return NO_ERROR; 2203 } 2204 PlaybackThread *srcThread = checkPlaybackThread_l(srcOutput); 2205 if (srcThread == NULL) { 2206 ALOGW("moveEffects() bad srcOutput %d", srcOutput); 2207 return BAD_VALUE; 2208 } 2209 PlaybackThread *dstThread = checkPlaybackThread_l(dstOutput); 2210 if (dstThread == NULL) { 2211 ALOGW("moveEffects() bad dstOutput %d", dstOutput); 2212 return BAD_VALUE; 2213 } 2214 2215 Mutex::Autolock _dl(dstThread->mLock); 2216 Mutex::Autolock _sl(srcThread->mLock); 2217 moveEffectChain_l(sessionId, srcThread, dstThread, false); 2218 2219 return NO_ERROR; 2220} 2221 2222// moveEffectChain_l must be called with both srcThread and dstThread mLocks held 2223status_t AudioFlinger::moveEffectChain_l(int sessionId, 2224 AudioFlinger::PlaybackThread *srcThread, 2225 AudioFlinger::PlaybackThread *dstThread, 2226 bool reRegister) 2227{ 2228 ALOGV("moveEffectChain_l() session %d from thread %p to thread %p", 2229 sessionId, srcThread, dstThread); 2230 2231 sp<EffectChain> chain = srcThread->getEffectChain_l(sessionId); 2232 if (chain == 0) { 2233 ALOGW("moveEffectChain_l() effect chain for session %d not on source thread %p", 2234 sessionId, srcThread); 2235 return INVALID_OPERATION; 2236 } 2237 2238 // remove chain first. This is useful only if reconfiguring effect chain on same output thread, 2239 // so that a new chain is created with correct parameters when first effect is added. This is 2240 // otherwise unnecessary as removeEffect_l() will remove the chain when last effect is 2241 // removed. 2242 srcThread->removeEffectChain_l(chain); 2243 2244 // transfer all effects one by one so that new effect chain is created on new thread with 2245 // correct buffer sizes and audio parameters and effect engines reconfigured accordingly 2246 audio_io_handle_t dstOutput = dstThread->id(); 2247 sp<EffectChain> dstChain; 2248 uint32_t strategy = 0; // prevent compiler warning 2249 sp<EffectModule> effect = chain->getEffectFromId_l(0); 2250 while (effect != 0) { 2251 srcThread->removeEffect_l(effect); 2252 dstThread->addEffect_l(effect); 2253 // removeEffect_l() has stopped the effect if it was active so it must be restarted 2254 if (effect->state() == EffectModule::ACTIVE || 2255 effect->state() == EffectModule::STOPPING) { 2256 effect->start(); 2257 } 2258 // if the move request is not received from audio policy manager, the effect must be 2259 // re-registered with the new strategy and output 2260 if (dstChain == 0) { 2261 dstChain = effect->chain().promote(); 2262 if (dstChain == 0) { 2263 ALOGW("moveEffectChain_l() cannot get chain from effect %p", effect.get()); 2264 srcThread->addEffect_l(effect); 2265 return NO_INIT; 2266 } 2267 strategy = dstChain->strategy(); 2268 } 2269 if (reRegister) { 2270 AudioSystem::unregisterEffect(effect->id()); 2271 AudioSystem::registerEffect(&effect->desc(), 2272 dstOutput, 2273 strategy, 2274 sessionId, 2275 effect->id()); 2276 } 2277 effect = chain->getEffectFromId_l(0); 2278 } 2279 2280 return NO_ERROR; 2281} 2282 2283struct Entry { 2284#define MAX_NAME 32 // %Y%m%d%H%M%S_%d.wav 2285 char mName[MAX_NAME]; 2286}; 2287 2288int comparEntry(const void *p1, const void *p2) 2289{ 2290 return strcmp(((const Entry *) p1)->mName, ((const Entry *) p2)->mName); 2291} 2292 2293#ifdef TEE_SINK 2294void AudioFlinger::dumpTee(int fd, const sp<NBAIO_Source>& source, audio_io_handle_t id) 2295{ 2296 NBAIO_Source *teeSource = source.get(); 2297 if (teeSource != NULL) { 2298 // .wav rotation 2299 // There is a benign race condition if 2 threads call this simultaneously. 2300 // They would both traverse the directory, but the result would simply be 2301 // failures at unlink() which are ignored. It's also unlikely since 2302 // normally dumpsys is only done by bugreport or from the command line. 2303 char teePath[32+256]; 2304 strcpy(teePath, "/data/misc/media"); 2305 size_t teePathLen = strlen(teePath); 2306 DIR *dir = opendir(teePath); 2307 teePath[teePathLen++] = '/'; 2308 if (dir != NULL) { 2309#define MAX_SORT 20 // number of entries to sort 2310#define MAX_KEEP 10 // number of entries to keep 2311 struct Entry entries[MAX_SORT]; 2312 size_t entryCount = 0; 2313 while (entryCount < MAX_SORT) { 2314 struct dirent de; 2315 struct dirent *result = NULL; 2316 int rc = readdir_r(dir, &de, &result); 2317 if (rc != 0) { 2318 ALOGW("readdir_r failed %d", rc); 2319 break; 2320 } 2321 if (result == NULL) { 2322 break; 2323 } 2324 if (result != &de) { 2325 ALOGW("readdir_r returned unexpected result %p != %p", result, &de); 2326 break; 2327 } 2328 // ignore non .wav file entries 2329 size_t nameLen = strlen(de.d_name); 2330 if (nameLen <= 4 || nameLen >= MAX_NAME || 2331 strcmp(&de.d_name[nameLen - 4], ".wav")) { 2332 continue; 2333 } 2334 strcpy(entries[entryCount++].mName, de.d_name); 2335 } 2336 (void) closedir(dir); 2337 if (entryCount > MAX_KEEP) { 2338 qsort(entries, entryCount, sizeof(Entry), comparEntry); 2339 for (size_t i = 0; i < entryCount - MAX_KEEP; ++i) { 2340 strcpy(&teePath[teePathLen], entries[i].mName); 2341 (void) unlink(teePath); 2342 } 2343 } 2344 } else { 2345 if (fd >= 0) { 2346 fdprintf(fd, "unable to rotate tees in %s: %s\n", teePath, strerror(errno)); 2347 } 2348 } 2349 char teeTime[16]; 2350 struct timeval tv; 2351 gettimeofday(&tv, NULL); 2352 struct tm tm; 2353 localtime_r(&tv.tv_sec, &tm); 2354 strftime(teeTime, sizeof(teeTime), "%Y%m%d%H%M%S", &tm); 2355 snprintf(&teePath[teePathLen], sizeof(teePath) - teePathLen, "%s_%d.wav", teeTime, id); 2356 // if 2 dumpsys are done within 1 second, and rotation didn't work, then discard 2nd 2357 int teeFd = open(teePath, O_WRONLY | O_CREAT | O_EXCL | O_NOFOLLOW, S_IRUSR | S_IWUSR); 2358 if (teeFd >= 0) { 2359 char wavHeader[44]; 2360 memcpy(wavHeader, 2361 "RIFF\0\0\0\0WAVEfmt \20\0\0\0\1\0\2\0\104\254\0\0\0\0\0\0\4\0\20\0data\0\0\0\0", 2362 sizeof(wavHeader)); 2363 NBAIO_Format format = teeSource->format(); 2364 unsigned channelCount = Format_channelCount(format); 2365 ALOG_ASSERT(channelCount <= FCC_2); 2366 uint32_t sampleRate = Format_sampleRate(format); 2367 wavHeader[22] = channelCount; // number of channels 2368 wavHeader[24] = sampleRate; // sample rate 2369 wavHeader[25] = sampleRate >> 8; 2370 wavHeader[32] = channelCount * 2; // block alignment 2371 write(teeFd, wavHeader, sizeof(wavHeader)); 2372 size_t total = 0; 2373 bool firstRead = true; 2374 for (;;) { 2375#define TEE_SINK_READ 1024 2376 short buffer[TEE_SINK_READ * FCC_2]; 2377 size_t count = TEE_SINK_READ; 2378 ssize_t actual = teeSource->read(buffer, count, 2379 AudioBufferProvider::kInvalidPTS); 2380 bool wasFirstRead = firstRead; 2381 firstRead = false; 2382 if (actual <= 0) { 2383 if (actual == (ssize_t) OVERRUN && wasFirstRead) { 2384 continue; 2385 } 2386 break; 2387 } 2388 ALOG_ASSERT(actual <= (ssize_t)count); 2389 write(teeFd, buffer, actual * channelCount * sizeof(short)); 2390 total += actual; 2391 } 2392 lseek(teeFd, (off_t) 4, SEEK_SET); 2393 uint32_t temp = 44 + total * channelCount * sizeof(short) - 8; 2394 write(teeFd, &temp, sizeof(temp)); 2395 lseek(teeFd, (off_t) 40, SEEK_SET); 2396 temp = total * channelCount * sizeof(short); 2397 write(teeFd, &temp, sizeof(temp)); 2398 close(teeFd); 2399 if (fd >= 0) { 2400 fdprintf(fd, "tee copied to %s\n", teePath); 2401 } 2402 } else { 2403 if (fd >= 0) { 2404 fdprintf(fd, "unable to create tee %s: %s\n", teePath, strerror(errno)); 2405 } 2406 } 2407 } 2408} 2409#endif 2410 2411// ---------------------------------------------------------------------------- 2412 2413status_t AudioFlinger::onTransact( 2414 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2415{ 2416 return BnAudioFlinger::onTransact(code, data, reply, flags); 2417} 2418 2419}; // namespace android 2420