CameraService.cpp revision 5adc76c49a525993f3362cf648864fb21f4547f0
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define LOG_TAG "CameraService" 18#define ATRACE_TAG ATRACE_TAG_CAMERA 19//#define LOG_NDEBUG 0 20 21#include <algorithm> 22#include <climits> 23#include <stdio.h> 24#include <cstring> 25#include <ctime> 26#include <string> 27#include <sys/types.h> 28#include <inttypes.h> 29#include <pthread.h> 30 31#include <binder/AppOpsManager.h> 32#include <binder/IPCThreadState.h> 33#include <binder/IServiceManager.h> 34#include <binder/MemoryBase.h> 35#include <binder/MemoryHeapBase.h> 36#include <binder/ProcessInfoService.h> 37#include <cutils/atomic.h> 38#include <cutils/properties.h> 39#include <gui/Surface.h> 40#include <hardware/hardware.h> 41#include <media/AudioSystem.h> 42#include <media/IMediaHTTPService.h> 43#include <media/mediaplayer.h> 44#include <mediautils/BatteryNotifier.h> 45#include <utils/Errors.h> 46#include <utils/Log.h> 47#include <utils/String16.h> 48#include <utils/Trace.h> 49#include <system/camera_vendor_tags.h> 50#include <system/camera_metadata.h> 51#include <system/camera.h> 52 53#include "CameraService.h" 54#include "api1/CameraClient.h" 55#include "api1/Camera2Client.h" 56#include "api2/CameraDeviceClient.h" 57#include "utils/CameraTraces.h" 58#include "CameraDeviceFactory.h" 59 60namespace android { 61 62// ---------------------------------------------------------------------------- 63// Logging support -- this is for debugging only 64// Use "adb shell dumpsys media.camera -v 1" to change it. 65volatile int32_t gLogLevel = 0; 66 67#define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__); 68#define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__); 69 70static void setLogLevel(int level) { 71 android_atomic_write(level, &gLogLevel); 72} 73 74// ---------------------------------------------------------------------------- 75 76extern "C" { 77static void camera_device_status_change( 78 const struct camera_module_callbacks* callbacks, 79 int camera_id, 80 int new_status) { 81 sp<CameraService> cs = const_cast<CameraService*>( 82 static_cast<const CameraService*>(callbacks)); 83 84 cs->onDeviceStatusChanged(static_cast<camera_device_status_t>(camera_id), 85 static_cast<camera_device_status_t>(new_status)); 86} 87 88static void torch_mode_status_change( 89 const struct camera_module_callbacks* callbacks, 90 const char* camera_id, 91 int new_status) { 92 if (!callbacks || !camera_id) { 93 ALOGE("%s invalid parameters. callbacks %p, camera_id %p", __FUNCTION__, 94 callbacks, camera_id); 95 } 96 sp<CameraService> cs = const_cast<CameraService*>( 97 static_cast<const CameraService*>(callbacks)); 98 99 ICameraServiceListener::TorchStatus status; 100 switch (new_status) { 101 case TORCH_MODE_STATUS_NOT_AVAILABLE: 102 status = ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 103 break; 104 case TORCH_MODE_STATUS_AVAILABLE_OFF: 105 status = ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF; 106 break; 107 case TORCH_MODE_STATUS_AVAILABLE_ON: 108 status = ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON; 109 break; 110 default: 111 ALOGE("Unknown torch status %d", new_status); 112 return; 113 } 114 115 cs->onTorchStatusChanged( 116 String8(camera_id), 117 status); 118} 119} // extern "C" 120 121// ---------------------------------------------------------------------------- 122 123// This is ugly and only safe if we never re-create the CameraService, but 124// should be ok for now. 125static CameraService *gCameraService; 126 127CameraService::CameraService() : mEventLog(DEFAULT_EVENT_LOG_LENGTH), mAllowedUsers(), 128 mSoundRef(0), mModule(0), mFlashlight(0) { 129 ALOGI("CameraService started (pid=%d)", getpid()); 130 gCameraService = this; 131 132 this->camera_device_status_change = android::camera_device_status_change; 133 this->torch_mode_status_change = android::torch_mode_status_change; 134 135 mServiceLockWrapper = std::make_shared<WaitableMutexWrapper>(&mServiceLock); 136} 137 138void CameraService::onFirstRef() 139{ 140 ALOGI("CameraService process starting"); 141 142 BnCameraService::onFirstRef(); 143 144 // Update battery life tracking if service is restarting 145 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 146 notifier.noteResetCamera(); 147 notifier.noteResetFlashlight(); 148 149 camera_module_t *rawModule; 150 int err = hw_get_module(CAMERA_HARDWARE_MODULE_ID, 151 (const hw_module_t **)&rawModule); 152 if (err < 0) { 153 ALOGE("Could not load camera HAL module: %d (%s)", err, strerror(-err)); 154 logServiceError("Could not load camera HAL module", err); 155 mNumberOfCameras = 0; 156 return; 157 } 158 159 mModule = new CameraModule(rawModule); 160 err = mModule->init(); 161 if (err != OK) { 162 ALOGE("Could not initialize camera HAL module: %d (%s)", err, 163 strerror(-err)); 164 logServiceError("Could not initialize camera HAL module", err); 165 166 mNumberOfCameras = 0; 167 delete mModule; 168 mModule = nullptr; 169 return; 170 } 171 ALOGI("Loaded \"%s\" camera module", mModule->getModuleName()); 172 173 mNumberOfCameras = mModule->getNumberOfCameras(); 174 mNumberOfNormalCameras = mNumberOfCameras; 175 176 // Setup vendor tags before we call get_camera_info the first time 177 // because HAL might need to setup static vendor keys in get_camera_info 178 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 179 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_2) { 180 setUpVendorTags(); 181 } 182 183 mFlashlight = new CameraFlashlight(*mModule, *this); 184 status_t res = mFlashlight->findFlashUnits(); 185 if (res) { 186 // impossible because we haven't open any camera devices. 187 ALOGE("Failed to find flash units."); 188 } 189 190 int latestStrangeCameraId = INT_MAX; 191 for (int i = 0; i < mNumberOfCameras; i++) { 192 String8 cameraId = String8::format("%d", i); 193 194 // Get camera info 195 196 struct camera_info info; 197 bool haveInfo = true; 198 status_t rc = mModule->getCameraInfo(i, &info); 199 if (rc != NO_ERROR) { 200 ALOGE("%s: Received error loading camera info for device %d, cost and" 201 " conflicting devices fields set to defaults for this device.", 202 __FUNCTION__, i); 203 haveInfo = false; 204 } 205 206 // Check for backwards-compatibility support 207 if (haveInfo) { 208 if (checkCameraCapabilities(i, info, &latestStrangeCameraId) != OK) { 209 delete mModule; 210 mModule = nullptr; 211 return; 212 } 213 } 214 215 // Defaults to use for cost and conflicting devices 216 int cost = 100; 217 char** conflicting_devices = nullptr; 218 size_t conflicting_devices_length = 0; 219 220 // If using post-2.4 module version, query the cost + conflicting devices from the HAL 221 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_4 && haveInfo) { 222 cost = info.resource_cost; 223 conflicting_devices = info.conflicting_devices; 224 conflicting_devices_length = info.conflicting_devices_length; 225 } 226 227 std::set<String8> conflicting; 228 for (size_t i = 0; i < conflicting_devices_length; i++) { 229 conflicting.emplace(String8(conflicting_devices[i])); 230 } 231 232 // Initialize state for each camera device 233 { 234 Mutex::Autolock lock(mCameraStatesLock); 235 mCameraStates.emplace(cameraId, std::make_shared<CameraState>(cameraId, cost, 236 conflicting)); 237 } 238 239 if (mFlashlight->hasFlashUnit(cameraId)) { 240 mTorchStatusMap.add(cameraId, 241 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF); 242 } 243 } 244 245 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_1) { 246 mModule->setCallbacks(this); 247 } 248 249 CameraDeviceFactory::registerService(this); 250 251 CameraService::pingCameraServiceProxy(); 252} 253 254sp<ICameraServiceProxy> CameraService::getCameraServiceProxy() { 255 sp<IServiceManager> sm = defaultServiceManager(); 256 sp<IBinder> binder = sm->getService(String16("media.camera.proxy")); 257 if (binder == nullptr) { 258 return nullptr; 259 } 260 sp<ICameraServiceProxy> proxyBinder = interface_cast<ICameraServiceProxy>(binder); 261 return proxyBinder; 262} 263 264void CameraService::pingCameraServiceProxy() { 265 sp<ICameraServiceProxy> proxyBinder = getCameraServiceProxy(); 266 if (proxyBinder == nullptr) return; 267 proxyBinder->pingForUserUpdate(); 268} 269 270CameraService::~CameraService() { 271 if (mModule) { 272 delete mModule; 273 mModule = nullptr; 274 } 275 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 276 gCameraService = nullptr; 277} 278 279void CameraService::onDeviceStatusChanged(camera_device_status_t cameraId, 280 camera_device_status_t newStatus) { 281 ALOGI("%s: Status changed for cameraId=%d, newStatus=%d", __FUNCTION__, 282 cameraId, newStatus); 283 284 String8 id = String8::format("%d", cameraId); 285 std::shared_ptr<CameraState> state = getCameraState(id); 286 287 if (state == nullptr) { 288 ALOGE("%s: Bad camera ID %d", __FUNCTION__, cameraId); 289 return; 290 } 291 292 ICameraServiceListener::Status oldStatus = state->getStatus(); 293 294 if (oldStatus == static_cast<ICameraServiceListener::Status>(newStatus)) { 295 ALOGE("%s: State transition to the same status %#x not allowed", __FUNCTION__, newStatus); 296 return; 297 } 298 299 if (newStatus == CAMERA_DEVICE_STATUS_NOT_PRESENT) { 300 logDeviceRemoved(id, String8::format("Device status changed from %d to %d", oldStatus, 301 newStatus)); 302 sp<BasicClient> clientToDisconnect; 303 { 304 // Don't do this in updateStatus to avoid deadlock over mServiceLock 305 Mutex::Autolock lock(mServiceLock); 306 307 // Set the device status to NOT_PRESENT, clients will no longer be able to connect 308 // to this device until the status changes 309 updateStatus(ICameraServiceListener::STATUS_NOT_PRESENT, id); 310 311 // Remove cached shim parameters 312 state->setShimParams(CameraParameters()); 313 314 // Remove the client from the list of active clients 315 clientToDisconnect = removeClientLocked(id); 316 317 // Notify the client of disconnection 318 if (clientToDisconnect != nullptr) { 319 clientToDisconnect->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 320 CaptureResultExtras{}); 321 } 322 } 323 324 ALOGI("%s: Client for camera ID %s evicted due to device status change from HAL", 325 __FUNCTION__, id.string()); 326 327 // Disconnect client 328 if (clientToDisconnect.get() != nullptr) { 329 // Ensure not in binder RPC so client disconnect PID checks work correctly 330 LOG_ALWAYS_FATAL_IF(getCallingPid() != getpid(), 331 "onDeviceStatusChanged must be called from the camera service process!"); 332 clientToDisconnect->disconnect(); 333 } 334 335 } else { 336 if (oldStatus == ICameraServiceListener::Status::STATUS_NOT_PRESENT) { 337 logDeviceAdded(id, String8::format("Device status changed from %d to %d", oldStatus, 338 newStatus)); 339 } 340 updateStatus(static_cast<ICameraServiceListener::Status>(newStatus), id); 341 } 342 343} 344 345void CameraService::onTorchStatusChanged(const String8& cameraId, 346 ICameraServiceListener::TorchStatus newStatus) { 347 Mutex::Autolock al(mTorchStatusMutex); 348 onTorchStatusChangedLocked(cameraId, newStatus); 349} 350 351void CameraService::onTorchStatusChangedLocked(const String8& cameraId, 352 ICameraServiceListener::TorchStatus newStatus) { 353 ALOGI("%s: Torch status changed for cameraId=%s, newStatus=%d", 354 __FUNCTION__, cameraId.string(), newStatus); 355 356 ICameraServiceListener::TorchStatus status; 357 status_t res = getTorchStatusLocked(cameraId, &status); 358 if (res) { 359 ALOGE("%s: cannot get torch status of camera %s: %s (%d)", 360 __FUNCTION__, cameraId.string(), strerror(-res), res); 361 return; 362 } 363 if (status == newStatus) { 364 return; 365 } 366 367 res = setTorchStatusLocked(cameraId, newStatus); 368 if (res) { 369 ALOGE("%s: Failed to set the torch status", __FUNCTION__, (uint32_t)newStatus); 370 return; 371 } 372 373 { 374 // Update battery life logging for flashlight 375 Mutex::Autolock al(mTorchUidMapMutex); 376 auto iter = mTorchUidMap.find(cameraId); 377 if (iter != mTorchUidMap.end()) { 378 int oldUid = iter->second.second; 379 int newUid = iter->second.first; 380 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 381 if (oldUid != newUid) { 382 // If the UID has changed, log the status and update current UID in mTorchUidMap 383 if (status == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 384 notifier.noteFlashlightOff(cameraId, oldUid); 385 } 386 if (newStatus == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 387 notifier.noteFlashlightOn(cameraId, newUid); 388 } 389 iter->second.second = newUid; 390 } else { 391 // If the UID has not changed, log the status 392 if (newStatus == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 393 notifier.noteFlashlightOn(cameraId, oldUid); 394 } else { 395 notifier.noteFlashlightOff(cameraId, oldUid); 396 } 397 } 398 } 399 } 400 401 { 402 Mutex::Autolock lock(mStatusListenerLock); 403 for (auto& i : mListenerList) { 404 i->onTorchStatusChanged(newStatus, String16{cameraId}); 405 } 406 } 407} 408 409int32_t CameraService::getNumberOfCameras() { 410 ATRACE_CALL(); 411 return getNumberOfCameras(CAMERA_TYPE_BACKWARD_COMPATIBLE); 412} 413 414int32_t CameraService::getNumberOfCameras(int type) { 415 ATRACE_CALL(); 416 switch (type) { 417 case CAMERA_TYPE_BACKWARD_COMPATIBLE: 418 return mNumberOfNormalCameras; 419 case CAMERA_TYPE_ALL: 420 return mNumberOfCameras; 421 default: 422 ALOGW("%s: Unknown camera type %d, returning 0", 423 __FUNCTION__, type); 424 return 0; 425 } 426} 427 428status_t CameraService::getCameraInfo(int cameraId, 429 struct CameraInfo* cameraInfo) { 430 ATRACE_CALL(); 431 if (!mModule) { 432 return -ENODEV; 433 } 434 435 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 436 return BAD_VALUE; 437 } 438 439 struct camera_info info; 440 status_t rc = filterGetInfoErrorCode( 441 mModule->getCameraInfo(cameraId, &info)); 442 cameraInfo->facing = info.facing; 443 cameraInfo->orientation = info.orientation; 444 return rc; 445} 446 447int CameraService::cameraIdToInt(const String8& cameraId) { 448 errno = 0; 449 size_t pos = 0; 450 int ret = stoi(std::string{cameraId.string()}, &pos); 451 if (errno != 0 || pos != cameraId.size()) { 452 return -1; 453 } 454 return ret; 455} 456 457status_t CameraService::generateShimMetadata(int cameraId, /*out*/CameraMetadata* cameraInfo) { 458 ATRACE_CALL(); 459 status_t ret = OK; 460 struct CameraInfo info; 461 if ((ret = getCameraInfo(cameraId, &info)) != OK) { 462 return ret; 463 } 464 465 CameraMetadata shimInfo; 466 int32_t orientation = static_cast<int32_t>(info.orientation); 467 if ((ret = shimInfo.update(ANDROID_SENSOR_ORIENTATION, &orientation, 1)) != OK) { 468 return ret; 469 } 470 471 uint8_t facing = (info.facing == CAMERA_FACING_FRONT) ? 472 ANDROID_LENS_FACING_FRONT : ANDROID_LENS_FACING_BACK; 473 if ((ret = shimInfo.update(ANDROID_LENS_FACING, &facing, 1)) != OK) { 474 return ret; 475 } 476 477 CameraParameters shimParams; 478 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 479 // Error logged by callee 480 return ret; 481 } 482 483 Vector<Size> sizes; 484 Vector<Size> jpegSizes; 485 Vector<int32_t> formats; 486 const char* supportedPreviewFormats; 487 { 488 shimParams.getSupportedPreviewSizes(/*out*/sizes); 489 shimParams.getSupportedPreviewFormats(/*out*/formats); 490 shimParams.getSupportedPictureSizes(/*out*/jpegSizes); 491 } 492 493 // Always include IMPLEMENTATION_DEFINED 494 formats.add(HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED); 495 496 const size_t INTS_PER_CONFIG = 4; 497 498 // Build available stream configurations metadata 499 size_t streamConfigSize = (sizes.size() * formats.size() + jpegSizes.size()) * INTS_PER_CONFIG; 500 501 Vector<int32_t> streamConfigs; 502 streamConfigs.setCapacity(streamConfigSize); 503 504 for (size_t i = 0; i < formats.size(); ++i) { 505 for (size_t j = 0; j < sizes.size(); ++j) { 506 streamConfigs.add(formats[i]); 507 streamConfigs.add(sizes[j].width); 508 streamConfigs.add(sizes[j].height); 509 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 510 } 511 } 512 513 for (size_t i = 0; i < jpegSizes.size(); ++i) { 514 streamConfigs.add(HAL_PIXEL_FORMAT_BLOB); 515 streamConfigs.add(jpegSizes[i].width); 516 streamConfigs.add(jpegSizes[i].height); 517 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 518 } 519 520 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS, 521 streamConfigs.array(), streamConfigSize)) != OK) { 522 return ret; 523 } 524 525 int64_t fakeMinFrames[0]; 526 // TODO: Fixme, don't fake min frame durations. 527 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS, 528 fakeMinFrames, 0)) != OK) { 529 return ret; 530 } 531 532 int64_t fakeStalls[0]; 533 // TODO: Fixme, don't fake stall durations. 534 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STALL_DURATIONS, 535 fakeStalls, 0)) != OK) { 536 return ret; 537 } 538 539 *cameraInfo = shimInfo; 540 return OK; 541} 542 543status_t CameraService::getCameraCharacteristics(int cameraId, 544 CameraMetadata* cameraInfo) { 545 ATRACE_CALL(); 546 if (!cameraInfo) { 547 ALOGE("%s: cameraInfo is NULL", __FUNCTION__); 548 return BAD_VALUE; 549 } 550 551 if (!mModule) { 552 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 553 return -ENODEV; 554 } 555 556 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 557 ALOGE("%s: Invalid camera id: %d", __FUNCTION__, cameraId); 558 return BAD_VALUE; 559 } 560 561 int facing; 562 status_t ret = OK; 563 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0 || 564 getDeviceVersion(cameraId, &facing) <= CAMERA_DEVICE_API_VERSION_2_1 ) { 565 /** 566 * Backwards compatibility mode for old HALs: 567 * - Convert CameraInfo into static CameraMetadata properties. 568 * - Retrieve cached CameraParameters for this camera. If none exist, 569 * attempt to open CameraClient and retrieve the CameraParameters. 570 * - Convert cached CameraParameters into static CameraMetadata 571 * properties. 572 */ 573 ALOGI("%s: Switching to HAL1 shim implementation...", __FUNCTION__); 574 575 if ((ret = generateShimMetadata(cameraId, cameraInfo)) != OK) { 576 return ret; 577 } 578 579 } else { 580 /** 581 * Normal HAL 2.1+ codepath. 582 */ 583 struct camera_info info; 584 ret = filterGetInfoErrorCode(mModule->getCameraInfo(cameraId, &info)); 585 *cameraInfo = info.static_camera_characteristics; 586 } 587 588 return ret; 589} 590 591int CameraService::getCallingPid() { 592 return IPCThreadState::self()->getCallingPid(); 593} 594 595int CameraService::getCallingUid() { 596 return IPCThreadState::self()->getCallingUid(); 597} 598 599String8 CameraService::getFormattedCurrentTime() { 600 time_t now = time(nullptr); 601 char formattedTime[64]; 602 strftime(formattedTime, sizeof(formattedTime), "%m-%d %H:%M:%S", localtime(&now)); 603 return String8(formattedTime); 604} 605 606int CameraService::getCameraPriorityFromProcState(int procState) { 607 // Find the priority for the camera usage based on the process state. Higher priority clients 608 // win for evictions. 609 if (procState < 0) { 610 ALOGE("%s: Received invalid process state %d from ActivityManagerService!", __FUNCTION__, 611 procState); 612 return -1; 613 } 614 // Treat sleeping TOP processes the same as regular TOP processes, for 615 // access priority. This is important for lock-screen camera launch scenarios 616 if (procState == PROCESS_STATE_TOP_SLEEPING) { 617 procState = PROCESS_STATE_TOP; 618 } 619 return INT_MAX - procState; 620} 621 622status_t CameraService::getCameraVendorTagDescriptor(/*out*/sp<VendorTagDescriptor>& desc) { 623 ATRACE_CALL(); 624 if (!mModule) { 625 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 626 return -ENODEV; 627 } 628 629 desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 630 return OK; 631} 632 633int CameraService::getDeviceVersion(int cameraId, int* facing) { 634 ATRACE_CALL(); 635 struct camera_info info; 636 if (mModule->getCameraInfo(cameraId, &info) != OK) { 637 return -1; 638 } 639 640 int deviceVersion; 641 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) { 642 deviceVersion = info.device_version; 643 } else { 644 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 645 } 646 647 if (facing) { 648 *facing = info.facing; 649 } 650 651 return deviceVersion; 652} 653 654status_t CameraService::filterGetInfoErrorCode(status_t err) { 655 switch(err) { 656 case NO_ERROR: 657 case -EINVAL: 658 return err; 659 default: 660 break; 661 } 662 return -ENODEV; 663} 664 665bool CameraService::setUpVendorTags() { 666 ATRACE_CALL(); 667 vendor_tag_ops_t vOps = vendor_tag_ops_t(); 668 669 // Check if vendor operations have been implemented 670 if (!mModule->isVendorTagDefined()) { 671 ALOGI("%s: No vendor tags defined for this device.", __FUNCTION__); 672 return false; 673 } 674 675 mModule->getVendorTagOps(&vOps); 676 677 // Ensure all vendor operations are present 678 if (vOps.get_tag_count == NULL || vOps.get_all_tags == NULL || 679 vOps.get_section_name == NULL || vOps.get_tag_name == NULL || 680 vOps.get_tag_type == NULL) { 681 ALOGE("%s: Vendor tag operations not fully defined. Ignoring definitions." 682 , __FUNCTION__); 683 return false; 684 } 685 686 // Read all vendor tag definitions into a descriptor 687 sp<VendorTagDescriptor> desc; 688 status_t res; 689 if ((res = VendorTagDescriptor::createDescriptorFromOps(&vOps, /*out*/desc)) 690 != OK) { 691 ALOGE("%s: Could not generate descriptor from vendor tag operations," 692 "received error %s (%d). Camera clients will not be able to use" 693 "vendor tags", __FUNCTION__, strerror(res), res); 694 return false; 695 } 696 697 // Set the global descriptor to use with camera metadata 698 VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc); 699 return true; 700} 701 702status_t CameraService::makeClient(const sp<CameraService>& cameraService, 703 const sp<IInterface>& cameraCb, const String16& packageName, const String8& cameraId, 704 int facing, int clientPid, uid_t clientUid, int servicePid, bool legacyMode, 705 int halVersion, int deviceVersion, apiLevel effectiveApiLevel, 706 /*out*/sp<BasicClient>* client) { 707 708 // TODO: Update CameraClients + HAL interface to use strings for Camera IDs 709 int id = cameraIdToInt(cameraId); 710 if (id == -1) { 711 ALOGE("%s: Invalid camera ID %s, cannot convert to integer.", __FUNCTION__, 712 cameraId.string()); 713 return BAD_VALUE; 714 } 715 716 if (halVersion < 0 || halVersion == deviceVersion) { 717 // Default path: HAL version is unspecified by caller, create CameraClient 718 // based on device version reported by the HAL. 719 switch(deviceVersion) { 720 case CAMERA_DEVICE_API_VERSION_1_0: 721 if (effectiveApiLevel == API_1) { // Camera1 API route 722 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 723 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 724 clientPid, clientUid, getpid(), legacyMode); 725 } else { // Camera2 API route 726 ALOGW("Camera using old HAL version: %d", deviceVersion); 727 return -EOPNOTSUPP; 728 } 729 break; 730 case CAMERA_DEVICE_API_VERSION_2_0: 731 case CAMERA_DEVICE_API_VERSION_2_1: 732 case CAMERA_DEVICE_API_VERSION_3_0: 733 case CAMERA_DEVICE_API_VERSION_3_1: 734 case CAMERA_DEVICE_API_VERSION_3_2: 735 case CAMERA_DEVICE_API_VERSION_3_3: 736 if (effectiveApiLevel == API_1) { // Camera1 API route 737 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 738 *client = new Camera2Client(cameraService, tmp, packageName, id, facing, 739 clientPid, clientUid, servicePid, legacyMode); 740 } else { // Camera2 API route 741 sp<ICameraDeviceCallbacks> tmp = 742 static_cast<ICameraDeviceCallbacks*>(cameraCb.get()); 743 *client = new CameraDeviceClient(cameraService, tmp, packageName, id, 744 facing, clientPid, clientUid, servicePid); 745 } 746 break; 747 default: 748 // Should not be reachable 749 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 750 return INVALID_OPERATION; 751 } 752 } else { 753 // A particular HAL version is requested by caller. Create CameraClient 754 // based on the requested HAL version. 755 if (deviceVersion > CAMERA_DEVICE_API_VERSION_1_0 && 756 halVersion == CAMERA_DEVICE_API_VERSION_1_0) { 757 // Only support higher HAL version device opened as HAL1.0 device. 758 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 759 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 760 clientPid, clientUid, servicePid, legacyMode); 761 } else { 762 // Other combinations (e.g. HAL3.x open as HAL2.x) are not supported yet. 763 ALOGE("Invalid camera HAL version %x: HAL %x device can only be" 764 " opened as HAL %x device", halVersion, deviceVersion, 765 CAMERA_DEVICE_API_VERSION_1_0); 766 return INVALID_OPERATION; 767 } 768 } 769 return NO_ERROR; 770} 771 772String8 CameraService::toString(std::set<userid_t> intSet) { 773 String8 s(""); 774 bool first = true; 775 for (userid_t i : intSet) { 776 if (first) { 777 s.appendFormat("%d", i); 778 first = false; 779 } else { 780 s.appendFormat(", %d", i); 781 } 782 } 783 return s; 784} 785 786status_t CameraService::initializeShimMetadata(int cameraId) { 787 int uid = getCallingUid(); 788 789 String16 internalPackageName("media"); 790 String8 id = String8::format("%d", cameraId); 791 status_t ret = NO_ERROR; 792 sp<Client> tmp = nullptr; 793 if ((ret = connectHelper<ICameraClient,Client>(sp<ICameraClient>{nullptr}, id, 794 static_cast<int>(CAMERA_HAL_API_VERSION_UNSPECIFIED), internalPackageName, uid, API_1, 795 false, true, tmp)) != NO_ERROR) { 796 ALOGE("%s: Error %d (%s) initializing shim metadata.", __FUNCTION__, ret, strerror(ret)); 797 return ret; 798 } 799 return NO_ERROR; 800} 801 802status_t CameraService::getLegacyParametersLazy(int cameraId, 803 /*out*/ 804 CameraParameters* parameters) { 805 806 ALOGV("%s: for cameraId: %d", __FUNCTION__, cameraId); 807 808 status_t ret = 0; 809 810 if (parameters == NULL) { 811 ALOGE("%s: parameters must not be null", __FUNCTION__); 812 return BAD_VALUE; 813 } 814 815 String8 id = String8::format("%d", cameraId); 816 817 // Check if we already have parameters 818 { 819 // Scope for service lock 820 Mutex::Autolock lock(mServiceLock); 821 auto cameraState = getCameraState(id); 822 if (cameraState == nullptr) { 823 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 824 return BAD_VALUE; 825 } 826 CameraParameters p = cameraState->getShimParams(); 827 if (!p.isEmpty()) { 828 *parameters = p; 829 return NO_ERROR; 830 } 831 } 832 833 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 834 ret = initializeShimMetadata(cameraId); 835 IPCThreadState::self()->restoreCallingIdentity(token); 836 if (ret != NO_ERROR) { 837 // Error already logged by callee 838 return ret; 839 } 840 841 // Check for parameters again 842 { 843 // Scope for service lock 844 Mutex::Autolock lock(mServiceLock); 845 auto cameraState = getCameraState(id); 846 if (cameraState == nullptr) { 847 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 848 return BAD_VALUE; 849 } 850 CameraParameters p = cameraState->getShimParams(); 851 if (!p.isEmpty()) { 852 *parameters = p; 853 return NO_ERROR; 854 } 855 } 856 857 ALOGE("%s: Parameters were not initialized, or were empty. Device may not be present.", 858 __FUNCTION__); 859 return INVALID_OPERATION; 860} 861 862status_t CameraService::validateConnectLocked(const String8& cameraId, /*inout*/int& clientUid) 863 const { 864 865 int callingPid = getCallingPid(); 866 867 if (clientUid == USE_CALLING_UID) { 868 clientUid = getCallingUid(); 869 } else { 870 // We only trust our own process to forward client UIDs 871 if (callingPid != getpid()) { 872 ALOGE("CameraService::connect X (PID %d) rejected (don't trust clientUid %d)", 873 callingPid, clientUid); 874 return PERMISSION_DENIED; 875 } 876 } 877 878 if (!mModule) { 879 ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)", 880 callingPid); 881 return -ENODEV; 882 } 883 884 if (getCameraState(cameraId) == nullptr) { 885 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 886 cameraId.string()); 887 return -ENODEV; 888 } 889 890 // Check device policy for this camera 891 char value[PROPERTY_VALUE_MAX]; 892 char key[PROPERTY_KEY_MAX]; 893 userid_t clientUserId = multiuser_get_user_id(clientUid); 894 snprintf(key, PROPERTY_KEY_MAX, "sys.secpolicy.camera.off_%d", clientUserId); 895 property_get(key, value, "0"); 896 if (strcmp(value, "1") == 0) { 897 // Camera is disabled by DevicePolicyManager. 898 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is disabled by device " 899 "policy)", callingPid, cameraId.string()); 900 return -EACCES; 901 } 902 903 // Only allow clients who are being used by the current foreground device user, unless calling 904 // from our own process. 905 if (callingPid != getpid() && (mAllowedUsers.find(clientUserId) == mAllowedUsers.end())) { 906 ALOGE("CameraService::connect X (PID %d) rejected (cannot connect from " 907 "device user %d, currently allowed device users: %s)", callingPid, clientUserId, 908 toString(mAllowedUsers).string()); 909 return PERMISSION_DENIED; 910 } 911 912 return checkIfDeviceIsUsable(cameraId); 913} 914 915status_t CameraService::checkIfDeviceIsUsable(const String8& cameraId) const { 916 auto cameraState = getCameraState(cameraId); 917 int callingPid = getCallingPid(); 918 if (cameraState == nullptr) { 919 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 920 cameraId.string()); 921 return -ENODEV; 922 } 923 924 ICameraServiceListener::Status currentStatus = cameraState->getStatus(); 925 if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { 926 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is not connected)", 927 callingPid, cameraId.string()); 928 return -ENODEV; 929 } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) { 930 ALOGE("CameraService::connect X (PID %d) rejected, (camera %s is initializing)", 931 callingPid, cameraId.string()); 932 return -EBUSY; 933 } 934 935 return NO_ERROR; 936} 937 938void CameraService::finishConnectLocked(const sp<BasicClient>& client, 939 const CameraService::DescriptorPtr& desc) { 940 941 // Make a descriptor for the incoming client 942 auto clientDescriptor = CameraService::CameraClientManager::makeClientDescriptor(client, desc); 943 auto evicted = mActiveClientManager.addAndEvict(clientDescriptor); 944 945 logConnected(desc->getKey(), static_cast<int>(desc->getOwnerId()), 946 String8(client->getPackageName())); 947 948 if (evicted.size() > 0) { 949 // This should never happen - clients should already have been removed in disconnect 950 for (auto& i : evicted) { 951 ALOGE("%s: Invalid state: Client for camera %s was not removed in disconnect", 952 __FUNCTION__, i->getKey().string()); 953 } 954 955 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, clients not evicted properly", 956 __FUNCTION__); 957 } 958 959 // And register a death notification for the client callback. Do 960 // this last to avoid Binder policy where a nested Binder 961 // transaction might be pre-empted to service the client death 962 // notification if the client process dies before linkToDeath is 963 // invoked. 964 sp<IBinder> remoteCallback = client->getRemote(); 965 if (remoteCallback != nullptr) { 966 remoteCallback->linkToDeath(this); 967 } 968} 969 970status_t CameraService::handleEvictionsLocked(const String8& cameraId, int clientPid, 971 apiLevel effectiveApiLevel, const sp<IBinder>& remoteCallback, const String8& packageName, 972 /*out*/ 973 sp<BasicClient>* client, 974 std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>* partial) { 975 ATRACE_CALL(); 976 status_t ret = NO_ERROR; 977 std::vector<DescriptorPtr> evictedClients; 978 DescriptorPtr clientDescriptor; 979 { 980 if (effectiveApiLevel == API_1) { 981 // If we are using API1, any existing client for this camera ID with the same remote 982 // should be returned rather than evicted to allow MediaRecorder to work properly. 983 984 auto current = mActiveClientManager.get(cameraId); 985 if (current != nullptr) { 986 auto clientSp = current->getValue(); 987 if (clientSp.get() != nullptr) { // should never be needed 988 if (!clientSp->canCastToApiClient(effectiveApiLevel)) { 989 ALOGW("CameraService connect called from same client, but with a different" 990 " API level, evicting prior client..."); 991 } else if (clientSp->getRemote() == remoteCallback) { 992 ALOGI("CameraService::connect X (PID %d) (second call from same" 993 " app binder, returning the same client)", clientPid); 994 *client = clientSp; 995 return NO_ERROR; 996 } 997 } 998 } 999 } 1000 1001 // Return error if the device was unplugged or removed by the HAL for some reason 1002 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1003 return ret; 1004 } 1005 1006 // Get current active client PIDs 1007 std::vector<int> ownerPids(mActiveClientManager.getAllOwners()); 1008 ownerPids.push_back(clientPid); 1009 1010 // Use the value +PROCESS_STATE_NONEXISTENT, to avoid taking 1011 // address of PROCESS_STATE_NONEXISTENT as a reference argument 1012 // for the vector constructor. PROCESS_STATE_NONEXISTENT does 1013 // not have an out-of-class definition. 1014 std::vector<int> priorities(ownerPids.size(), +PROCESS_STATE_NONEXISTENT); 1015 1016 // Get priorites of all active PIDs 1017 ProcessInfoService::getProcessStatesFromPids(ownerPids.size(), &ownerPids[0], 1018 /*out*/&priorities[0]); 1019 1020 // Update all active clients' priorities 1021 std::map<int,int> pidToPriorityMap; 1022 for (size_t i = 0; i < ownerPids.size() - 1; i++) { 1023 pidToPriorityMap.emplace(ownerPids[i], getCameraPriorityFromProcState(priorities[i])); 1024 } 1025 mActiveClientManager.updatePriorities(pidToPriorityMap); 1026 1027 // Get state for the given cameraId 1028 auto state = getCameraState(cameraId); 1029 if (state == nullptr) { 1030 ALOGE("CameraService::connect X (PID %d) rejected (no camera device with ID %s)", 1031 clientPid, cameraId.string()); 1032 return BAD_VALUE; 1033 } 1034 1035 // Make descriptor for incoming client 1036 clientDescriptor = CameraClientManager::makeClientDescriptor(cameraId, 1037 sp<BasicClient>{nullptr}, static_cast<int32_t>(state->getCost()), 1038 state->getConflicting(), 1039 getCameraPriorityFromProcState(priorities[priorities.size() - 1]), clientPid); 1040 1041 // Find clients that would be evicted 1042 auto evicted = mActiveClientManager.wouldEvict(clientDescriptor); 1043 1044 // If the incoming client was 'evicted,' higher priority clients have the camera in the 1045 // background, so we cannot do evictions 1046 if (std::find(evicted.begin(), evicted.end(), clientDescriptor) != evicted.end()) { 1047 ALOGE("CameraService::connect X (PID %d) rejected (existing client(s) with higher" 1048 " priority).", clientPid); 1049 1050 sp<BasicClient> clientSp = clientDescriptor->getValue(); 1051 String8 curTime = getFormattedCurrentTime(); 1052 auto incompatibleClients = 1053 mActiveClientManager.getIncompatibleClients(clientDescriptor); 1054 1055 String8 msg = String8::format("%s : DENIED connect device %s client for package %s " 1056 "(PID %d, priority %d) due to eviction policy", curTime.string(), 1057 cameraId.string(), packageName.string(), clientPid, 1058 getCameraPriorityFromProcState(priorities[priorities.size() - 1])); 1059 1060 for (auto& i : incompatibleClients) { 1061 msg.appendFormat("\n - Blocked by existing device %s client for package %s" 1062 "(PID %" PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1063 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1064 i->getPriority()); 1065 ALOGE(" Conflicts with: Device %s, client package %s (PID %" 1066 PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1067 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1068 i->getPriority()); 1069 } 1070 1071 // Log the client's attempt 1072 Mutex::Autolock l(mLogLock); 1073 mEventLog.add(msg); 1074 1075 return -EBUSY; 1076 } 1077 1078 for (auto& i : evicted) { 1079 sp<BasicClient> clientSp = i->getValue(); 1080 if (clientSp.get() == nullptr) { 1081 ALOGE("%s: Invalid state: Null client in active client list.", __FUNCTION__); 1082 1083 // TODO: Remove this 1084 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, null client in active list", 1085 __FUNCTION__); 1086 mActiveClientManager.remove(i); 1087 continue; 1088 } 1089 1090 ALOGE("CameraService::connect evicting conflicting client for camera ID %s", 1091 i->getKey().string()); 1092 evictedClients.push_back(i); 1093 1094 // Log the clients evicted 1095 logEvent(String8::format("EVICT device %s client held by package %s (PID" 1096 " %" PRId32 ", priority %" PRId32 ")\n - Evicted by device %s client for" 1097 " package %s (PID %d, priority %" PRId32 ")", 1098 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1099 i->getOwnerId(), i->getPriority(), cameraId.string(), 1100 packageName.string(), clientPid, 1101 getCameraPriorityFromProcState(priorities[priorities.size() - 1]))); 1102 1103 // Notify the client of disconnection 1104 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1105 CaptureResultExtras()); 1106 } 1107 } 1108 1109 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1110 // other clients from connecting in mServiceLockWrapper if held 1111 mServiceLock.unlock(); 1112 1113 // Clear caller identity temporarily so client disconnect PID checks work correctly 1114 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1115 1116 // Destroy evicted clients 1117 for (auto& i : evictedClients) { 1118 // Disconnect is blocking, and should only have returned when HAL has cleaned up 1119 i->getValue()->disconnect(); // Clients will remove themselves from the active client list 1120 } 1121 1122 IPCThreadState::self()->restoreCallingIdentity(token); 1123 1124 for (const auto& i : evictedClients) { 1125 ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")", 1126 __FUNCTION__, i->getKey().string(), i->getOwnerId()); 1127 ret = mActiveClientManager.waitUntilRemoved(i, DEFAULT_DISCONNECT_TIMEOUT_NS); 1128 if (ret == TIMED_OUT) { 1129 ALOGE("%s: Timed out waiting for client for device %s to disconnect, " 1130 "current clients:\n%s", __FUNCTION__, i->getKey().string(), 1131 mActiveClientManager.toString().string()); 1132 return -EBUSY; 1133 } 1134 if (ret != NO_ERROR) { 1135 ALOGE("%s: Received error waiting for client for device %s to disconnect: %s (%d), " 1136 "current clients:\n%s", __FUNCTION__, i->getKey().string(), strerror(-ret), 1137 ret, mActiveClientManager.toString().string()); 1138 return ret; 1139 } 1140 } 1141 1142 evictedClients.clear(); 1143 1144 // Once clients have been disconnected, relock 1145 mServiceLock.lock(); 1146 1147 // Check again if the device was unplugged or something while we weren't holding mServiceLock 1148 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1149 return ret; 1150 } 1151 1152 *partial = clientDescriptor; 1153 return NO_ERROR; 1154} 1155 1156status_t CameraService::connect( 1157 const sp<ICameraClient>& cameraClient, 1158 int cameraId, 1159 const String16& clientPackageName, 1160 int clientUid, 1161 /*out*/ 1162 sp<ICamera>& device) { 1163 1164 ATRACE_CALL(); 1165 status_t ret = NO_ERROR; 1166 String8 id = String8::format("%d", cameraId); 1167 sp<Client> client = nullptr; 1168 ret = connectHelper<ICameraClient,Client>(cameraClient, id, CAMERA_HAL_API_VERSION_UNSPECIFIED, 1169 clientPackageName, clientUid, API_1, false, false, /*out*/client); 1170 1171 if(ret != NO_ERROR) { 1172 logRejected(id, getCallingPid(), String8(clientPackageName), 1173 String8::format("%s (%d)", strerror(-ret), ret)); 1174 return ret; 1175 } 1176 1177 device = client; 1178 return NO_ERROR; 1179} 1180 1181status_t CameraService::connectLegacy( 1182 const sp<ICameraClient>& cameraClient, 1183 int cameraId, int halVersion, 1184 const String16& clientPackageName, 1185 int clientUid, 1186 /*out*/ 1187 sp<ICamera>& device) { 1188 1189 ATRACE_CALL(); 1190 String8 id = String8::format("%d", cameraId); 1191 int apiVersion = mModule->getModuleApiVersion(); 1192 if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED && 1193 apiVersion < CAMERA_MODULE_API_VERSION_2_3) { 1194 /* 1195 * Either the HAL version is unspecified in which case this just creates 1196 * a camera client selected by the latest device version, or 1197 * it's a particular version in which case the HAL must supported 1198 * the open_legacy call 1199 */ 1200 ALOGE("%s: camera HAL module version %x doesn't support connecting to legacy HAL devices!", 1201 __FUNCTION__, apiVersion); 1202 logRejected(id, getCallingPid(), String8(clientPackageName), 1203 String8("HAL module version doesn't support legacy HAL connections")); 1204 return INVALID_OPERATION; 1205 } 1206 1207 status_t ret = NO_ERROR; 1208 sp<Client> client = nullptr; 1209 ret = connectHelper<ICameraClient,Client>(cameraClient, id, halVersion, clientPackageName, 1210 clientUid, API_1, true, false, /*out*/client); 1211 1212 if(ret != NO_ERROR) { 1213 logRejected(id, getCallingPid(), String8(clientPackageName), 1214 String8::format("%s (%d)", strerror(-ret), ret)); 1215 return ret; 1216 } 1217 1218 device = client; 1219 return NO_ERROR; 1220} 1221 1222status_t CameraService::connectDevice( 1223 const sp<ICameraDeviceCallbacks>& cameraCb, 1224 int cameraId, 1225 const String16& clientPackageName, 1226 int clientUid, 1227 /*out*/ 1228 sp<ICameraDeviceUser>& device) { 1229 1230 ATRACE_CALL(); 1231 status_t ret = NO_ERROR; 1232 String8 id = String8::format("%d", cameraId); 1233 sp<CameraDeviceClient> client = nullptr; 1234 ret = connectHelper<ICameraDeviceCallbacks,CameraDeviceClient>(cameraCb, id, 1235 CAMERA_HAL_API_VERSION_UNSPECIFIED, clientPackageName, clientUid, API_2, false, false, 1236 /*out*/client); 1237 1238 if(ret != NO_ERROR) { 1239 logRejected(id, getCallingPid(), String8(clientPackageName), 1240 String8::format("%s (%d)", strerror(-ret), ret)); 1241 return ret; 1242 } 1243 1244 device = client; 1245 return NO_ERROR; 1246} 1247 1248status_t CameraService::setTorchMode(const String16& cameraId, bool enabled, 1249 const sp<IBinder>& clientBinder) { 1250 1251 ATRACE_CALL(); 1252 if (enabled && clientBinder == nullptr) { 1253 ALOGE("%s: torch client binder is NULL", __FUNCTION__); 1254 return -EINVAL; 1255 } 1256 1257 String8 id = String8(cameraId.string()); 1258 int uid = getCallingUid(); 1259 1260 // verify id is valid. 1261 auto state = getCameraState(id); 1262 if (state == nullptr) { 1263 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1264 return -EINVAL; 1265 } 1266 1267 ICameraServiceListener::Status cameraStatus = state->getStatus(); 1268 if (cameraStatus != ICameraServiceListener::STATUS_PRESENT && 1269 cameraStatus != ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1270 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1271 return -EINVAL; 1272 } 1273 1274 { 1275 Mutex::Autolock al(mTorchStatusMutex); 1276 ICameraServiceListener::TorchStatus status; 1277 status_t res = getTorchStatusLocked(id, &status); 1278 if (res) { 1279 ALOGE("%s: getting current torch status failed for camera %s", 1280 __FUNCTION__, id.string()); 1281 return -EINVAL; 1282 } 1283 1284 if (status == ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE) { 1285 if (cameraStatus == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1286 ALOGE("%s: torch mode of camera %s is not available because " 1287 "camera is in use", __FUNCTION__, id.string()); 1288 return -EBUSY; 1289 } else { 1290 ALOGE("%s: torch mode of camera %s is not available due to " 1291 "insufficient resources", __FUNCTION__, id.string()); 1292 return -EUSERS; 1293 } 1294 } 1295 } 1296 1297 { 1298 // Update UID map - this is used in the torch status changed callbacks, so must be done 1299 // before setTorchMode 1300 Mutex::Autolock al(mTorchUidMapMutex); 1301 if (mTorchUidMap.find(id) == mTorchUidMap.end()) { 1302 mTorchUidMap[id].first = uid; 1303 mTorchUidMap[id].second = uid; 1304 } else { 1305 // Set the pending UID 1306 mTorchUidMap[id].first = uid; 1307 } 1308 } 1309 1310 status_t res = mFlashlight->setTorchMode(id, enabled); 1311 1312 if (res) { 1313 ALOGE("%s: setting torch mode of camera %s to %d failed. %s (%d)", 1314 __FUNCTION__, id.string(), enabled, strerror(-res), res); 1315 return res; 1316 } 1317 1318 { 1319 // update the link to client's death 1320 Mutex::Autolock al(mTorchClientMapMutex); 1321 ssize_t index = mTorchClientMap.indexOfKey(id); 1322 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 1323 if (enabled) { 1324 if (index == NAME_NOT_FOUND) { 1325 mTorchClientMap.add(id, clientBinder); 1326 } else { 1327 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1328 mTorchClientMap.replaceValueAt(index, clientBinder); 1329 } 1330 clientBinder->linkToDeath(this); 1331 } else if (index != NAME_NOT_FOUND) { 1332 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1333 } 1334 } 1335 1336 return OK; 1337} 1338 1339void CameraService::notifySystemEvent(int32_t eventId, const int32_t* args, size_t length) { 1340 ATRACE_CALL(); 1341 1342 switch(eventId) { 1343 case ICameraService::USER_SWITCHED: { 1344 doUserSwitch(/*newUserIds*/args, /*length*/length); 1345 break; 1346 } 1347 case ICameraService::NO_EVENT: 1348 default: { 1349 ALOGW("%s: Received invalid system event from system_server: %d", __FUNCTION__, 1350 eventId); 1351 break; 1352 } 1353 } 1354} 1355 1356status_t CameraService::addListener(const sp<ICameraServiceListener>& listener) { 1357 ATRACE_CALL(); 1358 1359 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); 1360 1361 if (listener == nullptr) { 1362 ALOGE("%s: Listener must not be null", __FUNCTION__); 1363 return BAD_VALUE; 1364 } 1365 1366 Mutex::Autolock lock(mServiceLock); 1367 1368 { 1369 Mutex::Autolock lock(mStatusListenerLock); 1370 for (auto& it : mListenerList) { 1371 if (IInterface::asBinder(it) == IInterface::asBinder(listener)) { 1372 ALOGW("%s: Tried to add listener %p which was already subscribed", 1373 __FUNCTION__, listener.get()); 1374 return ALREADY_EXISTS; 1375 } 1376 } 1377 1378 mListenerList.push_back(listener); 1379 } 1380 1381 1382 /* Immediately signal current status to this listener only */ 1383 { 1384 Mutex::Autolock lock(mCameraStatesLock); 1385 for (auto& i : mCameraStates) { 1386 // TODO: Update binder to use String16 for camera IDs and remove; 1387 int id = cameraIdToInt(i.first); 1388 if (id == -1) continue; 1389 1390 listener->onStatusChanged(i.second->getStatus(), id); 1391 } 1392 } 1393 1394 /* Immediately signal current torch status to this listener only */ 1395 { 1396 Mutex::Autolock al(mTorchStatusMutex); 1397 for (size_t i = 0; i < mTorchStatusMap.size(); i++ ) { 1398 String16 id = String16(mTorchStatusMap.keyAt(i).string()); 1399 listener->onTorchStatusChanged(mTorchStatusMap.valueAt(i), id); 1400 } 1401 } 1402 1403 return OK; 1404} 1405 1406status_t CameraService::removeListener(const sp<ICameraServiceListener>& listener) { 1407 ATRACE_CALL(); 1408 1409 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); 1410 1411 if (listener == 0) { 1412 ALOGE("%s: Listener must not be null", __FUNCTION__); 1413 return BAD_VALUE; 1414 } 1415 1416 Mutex::Autolock lock(mServiceLock); 1417 1418 { 1419 Mutex::Autolock lock(mStatusListenerLock); 1420 for (auto it = mListenerList.begin(); it != mListenerList.end(); it++) { 1421 if (IInterface::asBinder(*it) == IInterface::asBinder(listener)) { 1422 mListenerList.erase(it); 1423 return OK; 1424 } 1425 } 1426 } 1427 1428 ALOGW("%s: Tried to remove a listener %p which was not subscribed", 1429 __FUNCTION__, listener.get()); 1430 1431 return BAD_VALUE; 1432} 1433 1434status_t CameraService::getLegacyParameters(int cameraId, /*out*/String16* parameters) { 1435 1436 ATRACE_CALL(); 1437 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1438 1439 if (parameters == NULL) { 1440 ALOGE("%s: parameters must not be null", __FUNCTION__); 1441 return BAD_VALUE; 1442 } 1443 1444 status_t ret = 0; 1445 1446 CameraParameters shimParams; 1447 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 1448 // Error logged by caller 1449 return ret; 1450 } 1451 1452 String8 shimParamsString8 = shimParams.flatten(); 1453 String16 shimParamsString16 = String16(shimParamsString8); 1454 1455 *parameters = shimParamsString16; 1456 1457 return OK; 1458} 1459 1460status_t CameraService::supportsCameraApi(int cameraId, int apiVersion) { 1461 ATRACE_CALL(); 1462 1463 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1464 1465 switch (apiVersion) { 1466 case API_VERSION_1: 1467 case API_VERSION_2: 1468 break; 1469 default: 1470 ALOGE("%s: Bad API version %d", __FUNCTION__, apiVersion); 1471 return BAD_VALUE; 1472 } 1473 1474 int facing = -1; 1475 int deviceVersion = getDeviceVersion(cameraId, &facing); 1476 1477 switch(deviceVersion) { 1478 case CAMERA_DEVICE_API_VERSION_1_0: 1479 case CAMERA_DEVICE_API_VERSION_2_0: 1480 case CAMERA_DEVICE_API_VERSION_2_1: 1481 case CAMERA_DEVICE_API_VERSION_3_0: 1482 case CAMERA_DEVICE_API_VERSION_3_1: 1483 if (apiVersion == API_VERSION_2) { 1484 ALOGV("%s: Camera id %d uses HAL prior to HAL3.2, doesn't support api2 without shim", 1485 __FUNCTION__, cameraId); 1486 return -EOPNOTSUPP; 1487 } else { // if (apiVersion == API_VERSION_1) { 1488 ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported", 1489 __FUNCTION__, cameraId); 1490 return OK; 1491 } 1492 case CAMERA_DEVICE_API_VERSION_3_2: 1493 case CAMERA_DEVICE_API_VERSION_3_3: 1494 ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly", 1495 __FUNCTION__, cameraId); 1496 return OK; 1497 case -1: 1498 ALOGE("%s: Invalid camera id %d", __FUNCTION__, cameraId); 1499 return BAD_VALUE; 1500 default: 1501 ALOGE("%s: Unknown camera device HAL version: %d", __FUNCTION__, deviceVersion); 1502 return INVALID_OPERATION; 1503 } 1504 1505 return OK; 1506} 1507 1508void CameraService::removeByClient(const BasicClient* client) { 1509 Mutex::Autolock lock(mServiceLock); 1510 for (auto& i : mActiveClientManager.getAll()) { 1511 auto clientSp = i->getValue(); 1512 if (clientSp.get() == client) { 1513 mActiveClientManager.remove(i); 1514 } 1515 } 1516} 1517 1518bool CameraService::evictClientIdByRemote(const wp<IBinder>& remote) { 1519 const int callingPid = getCallingPid(); 1520 const int servicePid = getpid(); 1521 bool ret = false; 1522 { 1523 // Acquire mServiceLock and prevent other clients from connecting 1524 std::unique_ptr<AutoConditionLock> lock = 1525 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1526 1527 1528 std::vector<sp<BasicClient>> evicted; 1529 for (auto& i : mActiveClientManager.getAll()) { 1530 auto clientSp = i->getValue(); 1531 if (clientSp.get() == nullptr) { 1532 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1533 mActiveClientManager.remove(i); 1534 continue; 1535 } 1536 if (remote == clientSp->getRemote() && (callingPid == servicePid || 1537 callingPid == clientSp->getClientPid())) { 1538 mActiveClientManager.remove(i); 1539 evicted.push_back(clientSp); 1540 1541 // Notify the client of disconnection 1542 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1543 CaptureResultExtras()); 1544 } 1545 } 1546 1547 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1548 // other clients from connecting in mServiceLockWrapper if held 1549 mServiceLock.unlock(); 1550 1551 // Do not clear caller identity, remote caller should be client proccess 1552 1553 for (auto& i : evicted) { 1554 if (i.get() != nullptr) { 1555 i->disconnect(); 1556 ret = true; 1557 } 1558 } 1559 1560 // Reacquire mServiceLock 1561 mServiceLock.lock(); 1562 1563 } // lock is destroyed, allow further connect calls 1564 1565 return ret; 1566} 1567 1568 1569/** 1570 * Check camera capabilities, such as support for basic color operation 1571 */ 1572int CameraService::checkCameraCapabilities(int id, camera_info info, int *latestStrangeCameraId) { 1573 1574 // Assume all devices pre-v3.3 are backward-compatible 1575 bool isBackwardCompatible = true; 1576 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0 1577 && info.device_version >= CAMERA_DEVICE_API_VERSION_3_3) { 1578 isBackwardCompatible = false; 1579 status_t res; 1580 camera_metadata_ro_entry_t caps; 1581 res = find_camera_metadata_ro_entry( 1582 info.static_camera_characteristics, 1583 ANDROID_REQUEST_AVAILABLE_CAPABILITIES, 1584 &caps); 1585 if (res != 0) { 1586 ALOGW("%s: Unable to find camera capabilities for camera device %d", 1587 __FUNCTION__, id); 1588 caps.count = 0; 1589 } 1590 for (size_t i = 0; i < caps.count; i++) { 1591 if (caps.data.u8[i] == 1592 ANDROID_REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE) { 1593 isBackwardCompatible = true; 1594 break; 1595 } 1596 } 1597 } 1598 1599 if (!isBackwardCompatible) { 1600 mNumberOfNormalCameras--; 1601 *latestStrangeCameraId = id; 1602 } else { 1603 if (id > *latestStrangeCameraId) { 1604 ALOGE("%s: Normal camera ID %d higher than strange camera ID %d. " 1605 "This is not allowed due backward-compatibility requirements", 1606 __FUNCTION__, id, *latestStrangeCameraId); 1607 logServiceError("Invalid order of camera devices", ENODEV); 1608 mNumberOfCameras = 0; 1609 mNumberOfNormalCameras = 0; 1610 return INVALID_OPERATION; 1611 } 1612 } 1613 return OK; 1614} 1615 1616std::shared_ptr<CameraService::CameraState> CameraService::getCameraState( 1617 const String8& cameraId) const { 1618 std::shared_ptr<CameraState> state; 1619 { 1620 Mutex::Autolock lock(mCameraStatesLock); 1621 auto iter = mCameraStates.find(cameraId); 1622 if (iter != mCameraStates.end()) { 1623 state = iter->second; 1624 } 1625 } 1626 return state; 1627} 1628 1629sp<CameraService::BasicClient> CameraService::removeClientLocked(const String8& cameraId) { 1630 // Remove from active clients list 1631 auto clientDescriptorPtr = mActiveClientManager.remove(cameraId); 1632 if (clientDescriptorPtr == nullptr) { 1633 ALOGW("%s: Could not evict client, no client for camera ID %s", __FUNCTION__, 1634 cameraId.string()); 1635 return sp<BasicClient>{nullptr}; 1636 } 1637 1638 return clientDescriptorPtr->getValue(); 1639} 1640 1641void CameraService::doUserSwitch(const int32_t* newUserId, size_t length) { 1642 // Acquire mServiceLock and prevent other clients from connecting 1643 std::unique_ptr<AutoConditionLock> lock = 1644 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1645 1646 std::set<userid_t> newAllowedUsers; 1647 for (size_t i = 0; i < length; i++) { 1648 if (newUserId[i] < 0) { 1649 ALOGE("%s: Bad user ID %d given during user switch, ignoring.", 1650 __FUNCTION__, newUserId[i]); 1651 return; 1652 } 1653 newAllowedUsers.insert(static_cast<userid_t>(newUserId[i])); 1654 } 1655 1656 1657 if (newAllowedUsers == mAllowedUsers) { 1658 ALOGW("%s: Received notification of user switch with no updated user IDs.", __FUNCTION__); 1659 return; 1660 } 1661 1662 logUserSwitch(mAllowedUsers, newAllowedUsers); 1663 1664 mAllowedUsers = std::move(newAllowedUsers); 1665 1666 // Current user has switched, evict all current clients. 1667 std::vector<sp<BasicClient>> evicted; 1668 for (auto& i : mActiveClientManager.getAll()) { 1669 auto clientSp = i->getValue(); 1670 1671 if (clientSp.get() == nullptr) { 1672 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1673 continue; 1674 } 1675 1676 // Don't evict clients that are still allowed. 1677 uid_t clientUid = clientSp->getClientUid(); 1678 userid_t clientUserId = multiuser_get_user_id(clientUid); 1679 if (mAllowedUsers.find(clientUserId) != mAllowedUsers.end()) { 1680 continue; 1681 } 1682 1683 evicted.push_back(clientSp); 1684 1685 String8 curTime = getFormattedCurrentTime(); 1686 1687 ALOGE("Evicting conflicting client for camera ID %s due to user change", 1688 i->getKey().string()); 1689 1690 // Log the clients evicted 1691 logEvent(String8::format("EVICT device %s client held by package %s (PID %" 1692 PRId32 ", priority %" PRId32 ")\n - Evicted due to user switch.", 1693 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1694 i->getOwnerId(), i->getPriority())); 1695 1696 } 1697 1698 // Do not hold mServiceLock while disconnecting clients, but retain the condition 1699 // blocking other clients from connecting in mServiceLockWrapper if held. 1700 mServiceLock.unlock(); 1701 1702 // Clear caller identity temporarily so client disconnect PID checks work correctly 1703 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1704 1705 for (auto& i : evicted) { 1706 i->disconnect(); 1707 } 1708 1709 IPCThreadState::self()->restoreCallingIdentity(token); 1710 1711 // Reacquire mServiceLock 1712 mServiceLock.lock(); 1713} 1714 1715void CameraService::logEvent(const char* event) { 1716 String8 curTime = getFormattedCurrentTime(); 1717 Mutex::Autolock l(mLogLock); 1718 mEventLog.add(String8::format("%s : %s", curTime.string(), event)); 1719} 1720 1721void CameraService::logDisconnected(const char* cameraId, int clientPid, 1722 const char* clientPackage) { 1723 // Log the clients evicted 1724 logEvent(String8::format("DISCONNECT device %s client for package %s (PID %d)", cameraId, 1725 clientPackage, clientPid)); 1726} 1727 1728void CameraService::logConnected(const char* cameraId, int clientPid, 1729 const char* clientPackage) { 1730 // Log the clients evicted 1731 logEvent(String8::format("CONNECT device %s client for package %s (PID %d)", cameraId, 1732 clientPackage, clientPid)); 1733} 1734 1735void CameraService::logRejected(const char* cameraId, int clientPid, 1736 const char* clientPackage, const char* reason) { 1737 // Log the client rejected 1738 logEvent(String8::format("REJECT device %s client for package %s (PID %d), reason: (%s)", 1739 cameraId, clientPackage, clientPid, reason)); 1740} 1741 1742void CameraService::logUserSwitch(const std::set<userid_t>& oldUserIds, 1743 const std::set<userid_t>& newUserIds) { 1744 String8 newUsers = toString(newUserIds); 1745 String8 oldUsers = toString(oldUserIds); 1746 // Log the new and old users 1747 logEvent(String8::format("USER_SWITCH previous allowed users: %s , current allowed users: %s", 1748 oldUsers.string(), newUsers.string())); 1749} 1750 1751void CameraService::logDeviceRemoved(const char* cameraId, const char* reason) { 1752 // Log the device removal 1753 logEvent(String8::format("REMOVE device %s, reason: (%s)", cameraId, reason)); 1754} 1755 1756void CameraService::logDeviceAdded(const char* cameraId, const char* reason) { 1757 // Log the device removal 1758 logEvent(String8::format("ADD device %s, reason: (%s)", cameraId, reason)); 1759} 1760 1761void CameraService::logClientDied(int clientPid, const char* reason) { 1762 // Log the device removal 1763 logEvent(String8::format("DIED client(s) with PID %d, reason: (%s)", clientPid, reason)); 1764} 1765 1766void CameraService::logServiceError(const char* msg, int errorCode) { 1767 String8 curTime = getFormattedCurrentTime(); 1768 logEvent(String8::format("SERVICE ERROR: %s : %d (%s)", msg, errorCode, strerror(errorCode))); 1769} 1770 1771status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply, 1772 uint32_t flags) { 1773 1774 const int pid = getCallingPid(); 1775 const int selfPid = getpid(); 1776 1777 // Permission checks 1778 switch (code) { 1779 case BnCameraService::CONNECT: 1780 case BnCameraService::CONNECT_DEVICE: 1781 case BnCameraService::CONNECT_LEGACY: { 1782 if (pid != selfPid) { 1783 // we're called from a different process, do the real check 1784 if (!checkCallingPermission( 1785 String16("android.permission.CAMERA"))) { 1786 const int uid = getCallingUid(); 1787 ALOGE("Permission Denial: " 1788 "can't use the camera pid=%d, uid=%d", pid, uid); 1789 return PERMISSION_DENIED; 1790 } 1791 } 1792 break; 1793 } 1794 case BnCameraService::NOTIFY_SYSTEM_EVENT: { 1795 if (pid != selfPid) { 1796 // Ensure we're being called by system_server, or similar process with 1797 // permissions to notify the camera service about system events 1798 if (!checkCallingPermission( 1799 String16("android.permission.CAMERA_SEND_SYSTEM_EVENTS"))) { 1800 const int uid = getCallingUid(); 1801 ALOGE("Permission Denial: cannot send updates to camera service about system" 1802 " events from pid=%d, uid=%d", pid, uid); 1803 return PERMISSION_DENIED; 1804 } 1805 } 1806 break; 1807 } 1808 } 1809 1810 return BnCameraService::onTransact(code, data, reply, flags); 1811} 1812 1813// We share the media players for shutter and recording sound for all clients. 1814// A reference count is kept to determine when we will actually release the 1815// media players. 1816 1817MediaPlayer* CameraService::newMediaPlayer(const char *file) { 1818 MediaPlayer* mp = new MediaPlayer(); 1819 if (mp->setDataSource(NULL /* httpService */, file, NULL) == NO_ERROR) { 1820 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 1821 mp->prepare(); 1822 } else { 1823 ALOGE("Failed to load CameraService sounds: %s", file); 1824 return NULL; 1825 } 1826 return mp; 1827} 1828 1829void CameraService::loadSound() { 1830 ATRACE_CALL(); 1831 1832 Mutex::Autolock lock(mSoundLock); 1833 LOG1("CameraService::loadSound ref=%d", mSoundRef); 1834 if (mSoundRef++) return; 1835 1836 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 1837 mSoundPlayer[SOUND_RECORDING_START] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 1838 mSoundPlayer[SOUND_RECORDING_STOP] = newMediaPlayer("/system/media/audio/ui/VideoStop.ogg"); 1839} 1840 1841void CameraService::releaseSound() { 1842 Mutex::Autolock lock(mSoundLock); 1843 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 1844 if (--mSoundRef) return; 1845 1846 for (int i = 0; i < NUM_SOUNDS; i++) { 1847 if (mSoundPlayer[i] != 0) { 1848 mSoundPlayer[i]->disconnect(); 1849 mSoundPlayer[i].clear(); 1850 } 1851 } 1852} 1853 1854void CameraService::playSound(sound_kind kind) { 1855 ATRACE_CALL(); 1856 1857 LOG1("playSound(%d)", kind); 1858 Mutex::Autolock lock(mSoundLock); 1859 sp<MediaPlayer> player = mSoundPlayer[kind]; 1860 if (player != 0) { 1861 player->seekTo(0); 1862 player->start(); 1863 } 1864} 1865 1866// ---------------------------------------------------------------------------- 1867 1868CameraService::Client::Client(const sp<CameraService>& cameraService, 1869 const sp<ICameraClient>& cameraClient, 1870 const String16& clientPackageName, 1871 int cameraId, int cameraFacing, 1872 int clientPid, uid_t clientUid, 1873 int servicePid) : 1874 CameraService::BasicClient(cameraService, 1875 IInterface::asBinder(cameraClient), 1876 clientPackageName, 1877 cameraId, cameraFacing, 1878 clientPid, clientUid, 1879 servicePid) 1880{ 1881 int callingPid = getCallingPid(); 1882 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 1883 1884 mRemoteCallback = cameraClient; 1885 1886 cameraService->loadSound(); 1887 1888 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 1889} 1890 1891// tear down the client 1892CameraService::Client::~Client() { 1893 ALOGV("~Client"); 1894 mDestructionStarted = true; 1895 1896 mCameraService->releaseSound(); 1897 // unconditionally disconnect. function is idempotent 1898 Client::disconnect(); 1899} 1900 1901CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 1902 const sp<IBinder>& remoteCallback, 1903 const String16& clientPackageName, 1904 int cameraId, int cameraFacing, 1905 int clientPid, uid_t clientUid, 1906 int servicePid): 1907 mClientPackageName(clientPackageName), mDisconnected(false) 1908{ 1909 mCameraService = cameraService; 1910 mRemoteBinder = remoteCallback; 1911 mCameraId = cameraId; 1912 mCameraFacing = cameraFacing; 1913 mClientPid = clientPid; 1914 mClientUid = clientUid; 1915 mServicePid = servicePid; 1916 mOpsActive = false; 1917 mDestructionStarted = false; 1918} 1919 1920CameraService::BasicClient::~BasicClient() { 1921 ALOGV("~BasicClient"); 1922 mDestructionStarted = true; 1923} 1924 1925void CameraService::BasicClient::disconnect() { 1926 if (mDisconnected) { 1927 return; 1928 } 1929 mDisconnected = true; 1930 1931 mCameraService->removeByClient(this); 1932 mCameraService->logDisconnected(String8::format("%d", mCameraId), mClientPid, 1933 String8(mClientPackageName)); 1934 1935 sp<IBinder> remote = getRemote(); 1936 if (remote != nullptr) { 1937 remote->unlinkToDeath(mCameraService); 1938 } 1939 1940 finishCameraOps(); 1941 ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid); 1942 1943 // client shouldn't be able to call into us anymore 1944 mClientPid = 0; 1945} 1946 1947String16 CameraService::BasicClient::getPackageName() const { 1948 return mClientPackageName; 1949} 1950 1951 1952int CameraService::BasicClient::getClientPid() const { 1953 return mClientPid; 1954} 1955 1956uid_t CameraService::BasicClient::getClientUid() const { 1957 return mClientUid; 1958} 1959 1960bool CameraService::BasicClient::canCastToApiClient(apiLevel level) const { 1961 // Defaults to API2. 1962 return level == API_2; 1963} 1964 1965status_t CameraService::BasicClient::startCameraOps() { 1966 ATRACE_CALL(); 1967 1968 int32_t res; 1969 // Notify app ops that the camera is not available 1970 mOpsCallback = new OpsCallback(this); 1971 1972 { 1973 ALOGV("%s: Start camera ops, package name = %s, client UID = %d", 1974 __FUNCTION__, String8(mClientPackageName).string(), mClientUid); 1975 } 1976 1977 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 1978 mClientPackageName, mOpsCallback); 1979 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 1980 mClientUid, mClientPackageName); 1981 1982 if (res == AppOpsManager::MODE_ERRORED) { 1983 ALOGI("Camera %d: Access for \"%s\" has been revoked", 1984 mCameraId, String8(mClientPackageName).string()); 1985 return PERMISSION_DENIED; 1986 } 1987 1988 if (res == AppOpsManager::MODE_IGNORED) { 1989 ALOGI("Camera %d: Access for \"%s\" has been restricted", 1990 mCameraId, String8(mClientPackageName).string()); 1991 // Return the same error as for device policy manager rejection 1992 return -EACCES; 1993 } 1994 1995 mOpsActive = true; 1996 1997 // Transition device availability listeners from PRESENT -> NOT_AVAILABLE 1998 mCameraService->updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 1999 String8::format("%d", mCameraId)); 2000 2001 // Transition device state to OPEN 2002 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_OPEN, 2003 String8::format("%d", mCameraId)); 2004 2005 return OK; 2006} 2007 2008status_t CameraService::BasicClient::finishCameraOps() { 2009 ATRACE_CALL(); 2010 2011 // Check if startCameraOps succeeded, and if so, finish the camera op 2012 if (mOpsActive) { 2013 // Notify app ops that the camera is available again 2014 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 2015 mClientPackageName); 2016 mOpsActive = false; 2017 2018 auto rejected = {ICameraServiceListener::STATUS_NOT_PRESENT, 2019 ICameraServiceListener::STATUS_ENUMERATING}; 2020 2021 // Transition to PRESENT if the camera is not in either of the rejected states 2022 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, 2023 String8::format("%d", mCameraId), rejected); 2024 2025 // Transition device state to CLOSED 2026 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_CLOSED, 2027 String8::format("%d", mCameraId)); 2028 2029 // Notify flashlight that a camera device is closed. 2030 mCameraService->mFlashlight->deviceClosed( 2031 String8::format("%d", mCameraId)); 2032 } 2033 // Always stop watching, even if no camera op is active 2034 if (mOpsCallback != NULL) { 2035 mAppOpsManager.stopWatchingMode(mOpsCallback); 2036 } 2037 mOpsCallback.clear(); 2038 2039 return OK; 2040} 2041 2042void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 2043 ATRACE_CALL(); 2044 2045 String8 name(packageName); 2046 String8 myName(mClientPackageName); 2047 2048 if (op != AppOpsManager::OP_CAMERA) { 2049 ALOGW("Unexpected app ops notification received: %d", op); 2050 return; 2051 } 2052 2053 int32_t res; 2054 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 2055 mClientUid, mClientPackageName); 2056 ALOGV("checkOp returns: %d, %s ", res, 2057 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 2058 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 2059 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 2060 "UNKNOWN"); 2061 2062 if (res != AppOpsManager::MODE_ALLOWED) { 2063 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 2064 myName.string()); 2065 // Reset the client PID to allow server-initiated disconnect, 2066 // and to prevent further calls by client. 2067 mClientPid = getCallingPid(); 2068 CaptureResultExtras resultExtras; // a dummy result (invalid) 2069 notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE, resultExtras); 2070 disconnect(); 2071 } 2072} 2073 2074// ---------------------------------------------------------------------------- 2075 2076// Provide client strong pointer for callbacks. 2077sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) { 2078 String8 cameraId = String8::format("%d", (int)(intptr_t) user); 2079 auto clientDescriptor = gCameraService->mActiveClientManager.get(cameraId); 2080 if (clientDescriptor != nullptr) { 2081 return sp<Client>{ 2082 static_cast<Client*>(clientDescriptor->getValue().get())}; 2083 } 2084 return sp<Client>{nullptr}; 2085} 2086 2087void CameraService::Client::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 2088 const CaptureResultExtras& resultExtras) { 2089 if (mRemoteCallback != NULL) { 2090 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 2091 } else { 2092 ALOGE("mRemoteCallback is NULL!!"); 2093 } 2094} 2095 2096// NOTE: function is idempotent 2097void CameraService::Client::disconnect() { 2098 ALOGV("Client::disconnect"); 2099 BasicClient::disconnect(); 2100} 2101 2102bool CameraService::Client::canCastToApiClient(apiLevel level) const { 2103 return level == API_1; 2104} 2105 2106CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 2107 mClient(client) { 2108} 2109 2110void CameraService::Client::OpsCallback::opChanged(int32_t op, 2111 const String16& packageName) { 2112 sp<BasicClient> client = mClient.promote(); 2113 if (client != NULL) { 2114 client->opChanged(op, packageName); 2115 } 2116} 2117 2118// ---------------------------------------------------------------------------- 2119// CameraState 2120// ---------------------------------------------------------------------------- 2121 2122CameraService::CameraState::CameraState(const String8& id, int cost, 2123 const std::set<String8>& conflicting) : mId(id), 2124 mStatus(ICameraServiceListener::STATUS_PRESENT), mCost(cost), mConflicting(conflicting) {} 2125 2126CameraService::CameraState::~CameraState() {} 2127 2128ICameraServiceListener::Status CameraService::CameraState::getStatus() const { 2129 Mutex::Autolock lock(mStatusLock); 2130 return mStatus; 2131} 2132 2133CameraParameters CameraService::CameraState::getShimParams() const { 2134 return mShimParams; 2135} 2136 2137void CameraService::CameraState::setShimParams(const CameraParameters& params) { 2138 mShimParams = params; 2139} 2140 2141int CameraService::CameraState::getCost() const { 2142 return mCost; 2143} 2144 2145std::set<String8> CameraService::CameraState::getConflicting() const { 2146 return mConflicting; 2147} 2148 2149String8 CameraService::CameraState::getId() const { 2150 return mId; 2151} 2152 2153// ---------------------------------------------------------------------------- 2154// ClientEventListener 2155// ---------------------------------------------------------------------------- 2156 2157void CameraService::ClientEventListener::onClientAdded( 2158 const resource_policy::ClientDescriptor<String8, 2159 sp<CameraService::BasicClient>>& descriptor) { 2160 auto basicClient = descriptor.getValue(); 2161 if (basicClient.get() != nullptr) { 2162 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2163 notifier.noteStartCamera(descriptor.getKey(), 2164 static_cast<int>(basicClient->getClientUid())); 2165 } 2166} 2167 2168void CameraService::ClientEventListener::onClientRemoved( 2169 const resource_policy::ClientDescriptor<String8, 2170 sp<CameraService::BasicClient>>& descriptor) { 2171 auto basicClient = descriptor.getValue(); 2172 if (basicClient.get() != nullptr) { 2173 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2174 notifier.noteStopCamera(descriptor.getKey(), 2175 static_cast<int>(basicClient->getClientUid())); 2176 } 2177} 2178 2179 2180// ---------------------------------------------------------------------------- 2181// CameraClientManager 2182// ---------------------------------------------------------------------------- 2183 2184CameraService::CameraClientManager::CameraClientManager() { 2185 setListener(std::make_shared<ClientEventListener>()); 2186} 2187 2188CameraService::CameraClientManager::~CameraClientManager() {} 2189 2190sp<CameraService::BasicClient> CameraService::CameraClientManager::getCameraClient( 2191 const String8& id) const { 2192 auto descriptor = get(id); 2193 if (descriptor == nullptr) { 2194 return sp<BasicClient>{nullptr}; 2195 } 2196 return descriptor->getValue(); 2197} 2198 2199String8 CameraService::CameraClientManager::toString() const { 2200 auto all = getAll(); 2201 String8 ret("["); 2202 bool hasAny = false; 2203 for (auto& i : all) { 2204 hasAny = true; 2205 String8 key = i->getKey(); 2206 int32_t cost = i->getCost(); 2207 int32_t pid = i->getOwnerId(); 2208 int32_t priority = i->getPriority(); 2209 auto conflicting = i->getConflicting(); 2210 auto clientSp = i->getValue(); 2211 String8 packageName; 2212 userid_t clientUserId = 0; 2213 if (clientSp.get() != nullptr) { 2214 packageName = String8{clientSp->getPackageName()}; 2215 uid_t clientUid = clientSp->getClientUid(); 2216 clientUserId = multiuser_get_user_id(clientUid); 2217 } 2218 ret.appendFormat("\n(Camera ID: %s, Cost: %" PRId32 ", PID: %" PRId32 ", Priority: %" 2219 PRId32 ", ", key.string(), cost, pid, priority); 2220 2221 if (clientSp.get() != nullptr) { 2222 ret.appendFormat("User Id: %d, ", clientUserId); 2223 } 2224 if (packageName.size() != 0) { 2225 ret.appendFormat("Client Package Name: %s", packageName.string()); 2226 } 2227 2228 ret.append(", Conflicting Client Devices: {"); 2229 for (auto& j : conflicting) { 2230 ret.appendFormat("%s, ", j.string()); 2231 } 2232 ret.append("})"); 2233 } 2234 if (hasAny) ret.append("\n"); 2235 ret.append("]\n"); 2236 return ret; 2237} 2238 2239CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2240 const String8& key, const sp<BasicClient>& value, int32_t cost, 2241 const std::set<String8>& conflictingKeys, int32_t priority, int32_t ownerId) { 2242 2243 return std::make_shared<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>( 2244 key, value, cost, conflictingKeys, priority, ownerId); 2245} 2246 2247CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2248 const sp<BasicClient>& value, const CameraService::DescriptorPtr& partial) { 2249 return makeClientDescriptor(partial->getKey(), value, partial->getCost(), 2250 partial->getConflicting(), partial->getPriority(), partial->getOwnerId()); 2251} 2252 2253// ---------------------------------------------------------------------------- 2254 2255static const int kDumpLockRetries = 50; 2256static const int kDumpLockSleep = 60000; 2257 2258static bool tryLock(Mutex& mutex) 2259{ 2260 bool locked = false; 2261 for (int i = 0; i < kDumpLockRetries; ++i) { 2262 if (mutex.tryLock() == NO_ERROR) { 2263 locked = true; 2264 break; 2265 } 2266 usleep(kDumpLockSleep); 2267 } 2268 return locked; 2269} 2270 2271status_t CameraService::dump(int fd, const Vector<String16>& args) { 2272 ATRACE_CALL(); 2273 2274 String8 result("Dump of the Camera Service:\n"); 2275 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 2276 result = result.format("Permission Denial: " 2277 "can't dump CameraService from pid=%d, uid=%d\n", 2278 getCallingPid(), 2279 getCallingUid()); 2280 write(fd, result.string(), result.size()); 2281 } else { 2282 bool locked = tryLock(mServiceLock); 2283 // failed to lock - CameraService is probably deadlocked 2284 if (!locked) { 2285 result.append("CameraService may be deadlocked\n"); 2286 write(fd, result.string(), result.size()); 2287 } 2288 2289 bool hasClient = false; 2290 if (!mModule) { 2291 result = String8::format("No camera module available!\n"); 2292 write(fd, result.string(), result.size()); 2293 2294 // Dump event log for error information 2295 dumpEventLog(fd); 2296 2297 if (locked) mServiceLock.unlock(); 2298 return NO_ERROR; 2299 } 2300 2301 result = String8::format("Camera module HAL API version: 0x%x\n", mModule->getHalApiVersion()); 2302 result.appendFormat("Camera module API version: 0x%x\n", mModule->getModuleApiVersion()); 2303 result.appendFormat("Camera module name: %s\n", mModule->getModuleName()); 2304 result.appendFormat("Camera module author: %s\n", mModule->getModuleAuthor()); 2305 result.appendFormat("Number of camera devices: %d\n", mNumberOfCameras); 2306 String8 activeClientString = mActiveClientManager.toString(); 2307 result.appendFormat("Active Camera Clients:\n%s", activeClientString.string()); 2308 result.appendFormat("Allowed users:\n%s\n", toString(mAllowedUsers).string()); 2309 2310 sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 2311 if (desc == NULL) { 2312 result.appendFormat("Vendor tags left unimplemented.\n"); 2313 } else { 2314 result.appendFormat("Vendor tag definitions:\n"); 2315 } 2316 2317 write(fd, result.string(), result.size()); 2318 2319 if (desc != NULL) { 2320 desc->dump(fd, /*verbosity*/2, /*indentation*/4); 2321 } 2322 2323 dumpEventLog(fd); 2324 2325 bool stateLocked = tryLock(mCameraStatesLock); 2326 if (!stateLocked) { 2327 result = String8::format("CameraStates in use, may be deadlocked\n"); 2328 write(fd, result.string(), result.size()); 2329 } 2330 2331 for (auto& state : mCameraStates) { 2332 String8 cameraId = state.first; 2333 result = String8::format("Camera %s information:\n", cameraId.string()); 2334 camera_info info; 2335 2336 // TODO: Change getCameraInfo + HAL to use String cameraIds 2337 status_t rc = mModule->getCameraInfo(cameraIdToInt(cameraId), &info); 2338 if (rc != OK) { 2339 result.appendFormat(" Error reading static information!\n"); 2340 write(fd, result.string(), result.size()); 2341 } else { 2342 result.appendFormat(" Facing: %s\n", 2343 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 2344 result.appendFormat(" Orientation: %d\n", info.orientation); 2345 int deviceVersion; 2346 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0) { 2347 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 2348 } else { 2349 deviceVersion = info.device_version; 2350 } 2351 2352 auto conflicting = state.second->getConflicting(); 2353 result.appendFormat(" Resource Cost: %d\n", state.second->getCost()); 2354 result.appendFormat(" Conflicting Devices:"); 2355 for (auto& id : conflicting) { 2356 result.appendFormat(" %s", cameraId.string()); 2357 } 2358 if (conflicting.size() == 0) { 2359 result.appendFormat(" NONE"); 2360 } 2361 result.appendFormat("\n"); 2362 2363 result.appendFormat(" Device version: %#x\n", deviceVersion); 2364 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { 2365 result.appendFormat(" Device static metadata:\n"); 2366 write(fd, result.string(), result.size()); 2367 dump_indented_camera_metadata(info.static_camera_characteristics, 2368 fd, /*verbosity*/2, /*indentation*/4); 2369 } else { 2370 write(fd, result.string(), result.size()); 2371 } 2372 2373 CameraParameters p = state.second->getShimParams(); 2374 if (!p.isEmpty()) { 2375 result = String8::format(" Camera1 API shim is using parameters:\n "); 2376 write(fd, result.string(), result.size()); 2377 p.dump(fd, args); 2378 } 2379 } 2380 2381 auto clientDescriptor = mActiveClientManager.get(cameraId); 2382 if (clientDescriptor == nullptr) { 2383 result = String8::format(" Device %s is closed, no client instance\n", 2384 cameraId.string()); 2385 write(fd, result.string(), result.size()); 2386 continue; 2387 } 2388 hasClient = true; 2389 result = String8::format(" Device %s is open. Client instance dump:\n\n", 2390 cameraId.string()); 2391 result.appendFormat("Client priority level: %d\n", clientDescriptor->getPriority()); 2392 result.appendFormat("Client PID: %d\n", clientDescriptor->getOwnerId()); 2393 2394 auto client = clientDescriptor->getValue(); 2395 result.appendFormat("Client package: %s\n", 2396 String8(client->getPackageName()).string()); 2397 write(fd, result.string(), result.size()); 2398 2399 client->dump(fd, args); 2400 } 2401 2402 if (stateLocked) mCameraStatesLock.unlock(); 2403 2404 if (!hasClient) { 2405 result = String8::format("\nNo active camera clients yet.\n"); 2406 write(fd, result.string(), result.size()); 2407 } 2408 2409 if (locked) mServiceLock.unlock(); 2410 2411 // Dump camera traces if there were any 2412 write(fd, "\n", 1); 2413 camera3::CameraTraces::dump(fd, args); 2414 2415 // change logging level 2416 int n = args.size(); 2417 for (int i = 0; i + 1 < n; i++) { 2418 String16 verboseOption("-v"); 2419 if (args[i] == verboseOption) { 2420 String8 levelStr(args[i+1]); 2421 int level = atoi(levelStr.string()); 2422 result = String8::format("\nSetting log level to %d.\n", level); 2423 setLogLevel(level); 2424 write(fd, result.string(), result.size()); 2425 } 2426 } 2427 } 2428 return NO_ERROR; 2429} 2430 2431void CameraService::dumpEventLog(int fd) { 2432 String8 result = String8("\nPrior client events (most recent at top):\n"); 2433 2434 Mutex::Autolock l(mLogLock); 2435 for (const auto& msg : mEventLog) { 2436 result.appendFormat(" %s\n", msg.string()); 2437 } 2438 2439 if (mEventLog.size() == DEFAULT_EVENT_LOG_LENGTH) { 2440 result.append(" ...\n"); 2441 } else if (mEventLog.size() == 0) { 2442 result.append(" [no events yet]\n"); 2443 } 2444 result.append("\n"); 2445 2446 write(fd, result.string(), result.size()); 2447} 2448 2449void CameraService::handleTorchClientBinderDied(const wp<IBinder> &who) { 2450 Mutex::Autolock al(mTorchClientMapMutex); 2451 for (size_t i = 0; i < mTorchClientMap.size(); i++) { 2452 if (mTorchClientMap[i] == who) { 2453 // turn off the torch mode that was turned on by dead client 2454 String8 cameraId = mTorchClientMap.keyAt(i); 2455 status_t res = mFlashlight->setTorchMode(cameraId, false); 2456 if (res) { 2457 ALOGE("%s: torch client died but couldn't turn off torch: " 2458 "%s (%d)", __FUNCTION__, strerror(-res), res); 2459 return; 2460 } 2461 mTorchClientMap.removeItemsAt(i); 2462 break; 2463 } 2464 } 2465} 2466 2467/*virtual*/void CameraService::binderDied(const wp<IBinder> &who) { 2468 2469 /** 2470 * While tempting to promote the wp<IBinder> into a sp, it's actually not supported by the 2471 * binder driver 2472 */ 2473 2474 logClientDied(getCallingPid(), String8("Binder died unexpectedly")); 2475 2476 // check torch client 2477 handleTorchClientBinderDied(who); 2478 2479 // check camera device client 2480 if(!evictClientIdByRemote(who)) { 2481 ALOGV("%s: Java client's binder death already cleaned up (normal case)", __FUNCTION__); 2482 return; 2483 } 2484 2485 ALOGE("%s: Java client's binder died, removing it from the list of active clients", 2486 __FUNCTION__); 2487} 2488 2489void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId) { 2490 updateStatus(status, cameraId, {}); 2491} 2492 2493void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId, 2494 std::initializer_list<ICameraServiceListener::Status> rejectSourceStates) { 2495 // Do not lock mServiceLock here or can get into a deadlock from 2496 // connect() -> disconnect -> updateStatus 2497 2498 auto state = getCameraState(cameraId); 2499 2500 if (state == nullptr) { 2501 ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__, 2502 cameraId.string()); 2503 return; 2504 } 2505 2506 // Update the status for this camera state, then send the onStatusChangedCallbacks to each 2507 // of the listeners with both the mStatusStatus and mStatusListenerLock held 2508 state->updateStatus(status, cameraId, rejectSourceStates, [this] 2509 (const String8& cameraId, ICameraServiceListener::Status status) { 2510 2511 if (status != ICameraServiceListener::STATUS_ENUMERATING) { 2512 // Update torch status if it has a flash unit. 2513 Mutex::Autolock al(mTorchStatusMutex); 2514 ICameraServiceListener::TorchStatus torchStatus; 2515 if (getTorchStatusLocked(cameraId, &torchStatus) != 2516 NAME_NOT_FOUND) { 2517 ICameraServiceListener::TorchStatus newTorchStatus = 2518 status == ICameraServiceListener::STATUS_PRESENT ? 2519 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF : 2520 ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 2521 if (torchStatus != newTorchStatus) { 2522 onTorchStatusChangedLocked(cameraId, newTorchStatus); 2523 } 2524 } 2525 } 2526 2527 Mutex::Autolock lock(mStatusListenerLock); 2528 2529 for (auto& listener : mListenerList) { 2530 // TODO: Refactor status listeners to use strings for Camera IDs and remove this. 2531 int id = cameraIdToInt(cameraId); 2532 if (id != -1) listener->onStatusChanged(status, id); 2533 } 2534 }); 2535} 2536 2537void CameraService::updateProxyDeviceState(ICameraServiceProxy::CameraState newState, 2538 const String8& cameraId) { 2539 sp<ICameraServiceProxy> proxyBinder = getCameraServiceProxy(); 2540 if (proxyBinder == nullptr) return; 2541 String16 id(cameraId); 2542 proxyBinder->notifyCameraState(id, newState); 2543} 2544 2545status_t CameraService::getTorchStatusLocked( 2546 const String8& cameraId, 2547 ICameraServiceListener::TorchStatus *status) const { 2548 if (!status) { 2549 return BAD_VALUE; 2550 } 2551 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2552 if (index == NAME_NOT_FOUND) { 2553 // invalid camera ID or the camera doesn't have a flash unit 2554 return NAME_NOT_FOUND; 2555 } 2556 2557 *status = mTorchStatusMap.valueAt(index); 2558 return OK; 2559} 2560 2561status_t CameraService::setTorchStatusLocked(const String8& cameraId, 2562 ICameraServiceListener::TorchStatus status) { 2563 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2564 if (index == NAME_NOT_FOUND) { 2565 return BAD_VALUE; 2566 } 2567 ICameraServiceListener::TorchStatus& item = 2568 mTorchStatusMap.editValueAt(index); 2569 item = status; 2570 2571 return OK; 2572} 2573 2574}; // namespace android 2575