CameraService.cpp revision 24901c86e10a0923fe10f5e9bce5e6dba061a289
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 LOG_NDEBUG 0 19 20#include <algorithm> 21#include <climits> 22#include <stdio.h> 23#include <cstring> 24#include <ctime> 25#include <string> 26#include <sys/types.h> 27#include <inttypes.h> 28#include <pthread.h> 29 30#include <binder/AppOpsManager.h> 31#include <binder/IPCThreadState.h> 32#include <binder/IServiceManager.h> 33#include <binder/MemoryBase.h> 34#include <binder/MemoryHeapBase.h> 35#include <binder/ProcessInfoService.h> 36#include <cutils/atomic.h> 37#include <cutils/properties.h> 38#include <gui/Surface.h> 39#include <hardware/hardware.h> 40#include <media/AudioSystem.h> 41#include <media/IMediaHTTPService.h> 42#include <media/mediaplayer.h> 43#include <mediautils/BatteryNotifier.h> 44#include <utils/Errors.h> 45#include <utils/Log.h> 46#include <utils/String16.h> 47#include <utils/Trace.h> 48#include <system/camera_vendor_tags.h> 49#include <system/camera_metadata.h> 50#include <system/camera.h> 51 52#include "CameraService.h" 53#include "api1/CameraClient.h" 54#include "api1/Camera2Client.h" 55#include "api2/CameraDeviceClient.h" 56#include "utils/CameraTraces.h" 57#include "CameraDeviceFactory.h" 58 59namespace android { 60 61// ---------------------------------------------------------------------------- 62// Logging support -- this is for debugging only 63// Use "adb shell dumpsys media.camera -v 1" to change it. 64volatile int32_t gLogLevel = 0; 65 66#define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__); 67#define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__); 68 69static void setLogLevel(int level) { 70 android_atomic_write(level, &gLogLevel); 71} 72 73// ---------------------------------------------------------------------------- 74 75extern "C" { 76static void camera_device_status_change( 77 const struct camera_module_callbacks* callbacks, 78 int camera_id, 79 int new_status) { 80 sp<CameraService> cs = const_cast<CameraService*>( 81 static_cast<const CameraService*>(callbacks)); 82 83 cs->onDeviceStatusChanged(static_cast<camera_device_status_t>(camera_id), 84 static_cast<camera_device_status_t>(new_status)); 85} 86 87static void torch_mode_status_change( 88 const struct camera_module_callbacks* callbacks, 89 const char* camera_id, 90 int new_status) { 91 if (!callbacks || !camera_id) { 92 ALOGE("%s invalid parameters. callbacks %p, camera_id %p", __FUNCTION__, 93 callbacks, camera_id); 94 } 95 sp<CameraService> cs = const_cast<CameraService*>( 96 static_cast<const CameraService*>(callbacks)); 97 98 ICameraServiceListener::TorchStatus status; 99 switch (new_status) { 100 case TORCH_MODE_STATUS_NOT_AVAILABLE: 101 status = ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 102 break; 103 case TORCH_MODE_STATUS_AVAILABLE_OFF: 104 status = ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF; 105 break; 106 case TORCH_MODE_STATUS_AVAILABLE_ON: 107 status = ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON; 108 break; 109 default: 110 ALOGE("Unknown torch status %d", new_status); 111 return; 112 } 113 114 cs->onTorchStatusChanged( 115 String8(camera_id), 116 status); 117} 118} // extern "C" 119 120// ---------------------------------------------------------------------------- 121 122// This is ugly and only safe if we never re-create the CameraService, but 123// should be ok for now. 124static CameraService *gCameraService; 125 126CameraService::CameraService() : mEventLog(DEFAULT_EVENT_LOG_LENGTH), mAllowedUsers(), 127 mSoundRef(0), mModule(0), mFlashlight(0) { 128 ALOGI("CameraService started (pid=%d)", getpid()); 129 gCameraService = this; 130 131 this->camera_device_status_change = android::camera_device_status_change; 132 this->torch_mode_status_change = android::torch_mode_status_change; 133 134 mServiceLockWrapper = std::make_shared<WaitableMutexWrapper>(&mServiceLock); 135} 136 137void CameraService::onFirstRef() 138{ 139 ALOGI("CameraService process starting"); 140 141 BnCameraService::onFirstRef(); 142 143 // Update battery life tracking if service is restarting 144 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 145 notifier.noteResetCamera(); 146 notifier.noteResetFlashlight(); 147 148 camera_module_t *rawModule; 149 int err = hw_get_module(CAMERA_HARDWARE_MODULE_ID, 150 (const hw_module_t **)&rawModule); 151 if (err < 0) { 152 ALOGE("Could not load camera HAL module: %d (%s)", err, strerror(-err)); 153 logServiceError("Could not load camera HAL module", err); 154 mNumberOfCameras = 0; 155 return; 156 } 157 158 mModule = new CameraModule(rawModule); 159 ALOGI("Loaded \"%s\" camera module", mModule->getModuleName()); 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 } 171 172 mNumberOfCameras = mModule->getNumberOfCameras(); 173 mNumberOfNormalCameras = mNumberOfCameras; 174 175 mFlashlight = new CameraFlashlight(*mModule, *this); 176 status_t res = mFlashlight->findFlashUnits(); 177 if (res) { 178 // impossible because we haven't open any camera devices. 179 ALOGE("Failed to find flash units."); 180 } 181 182 int latestStrangeCameraId = INT_MAX; 183 for (int i = 0; i < mNumberOfCameras; i++) { 184 String8 cameraId = String8::format("%d", i); 185 186 // Get camera info 187 188 struct camera_info info; 189 bool haveInfo = true; 190 status_t rc = mModule->getCameraInfo(i, &info); 191 if (rc != NO_ERROR) { 192 ALOGE("%s: Received error loading camera info for device %d, cost and" 193 " conflicting devices fields set to defaults for this device.", 194 __FUNCTION__, i); 195 haveInfo = false; 196 } 197 198 // Check for backwards-compatibility support 199 if (haveInfo) { 200 if (checkCameraCapabilities(i, info, &latestStrangeCameraId) != OK) { 201 delete mModule; 202 mModule = nullptr; 203 return; 204 } 205 } 206 207 // Defaults to use for cost and conflicting devices 208 int cost = 100; 209 char** conflicting_devices = nullptr; 210 size_t conflicting_devices_length = 0; 211 212 // If using post-2.4 module version, query the cost + conflicting devices from the HAL 213 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_4 && haveInfo) { 214 cost = info.resource_cost; 215 conflicting_devices = info.conflicting_devices; 216 conflicting_devices_length = info.conflicting_devices_length; 217 } 218 219 std::set<String8> conflicting; 220 for (size_t i = 0; i < conflicting_devices_length; i++) { 221 conflicting.emplace(String8(conflicting_devices[i])); 222 } 223 224 // Initialize state for each camera device 225 { 226 Mutex::Autolock lock(mCameraStatesLock); 227 mCameraStates.emplace(cameraId, std::make_shared<CameraState>(cameraId, cost, 228 conflicting)); 229 } 230 231 if (mFlashlight->hasFlashUnit(cameraId)) { 232 mTorchStatusMap.add(cameraId, 233 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF); 234 } 235 } 236 237 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_1) { 238 mModule->setCallbacks(this); 239 } 240 241 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 242 243 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_2) { 244 setUpVendorTags(); 245 } 246 247 CameraDeviceFactory::registerService(this); 248 249 CameraService::pingCameraServiceProxy(); 250} 251 252sp<ICameraServiceProxy> CameraService::getCameraServiceProxy() { 253 sp<IServiceManager> sm = defaultServiceManager(); 254 sp<IBinder> binder = sm->getService(String16("media.camera.proxy")); 255 if (binder == nullptr) { 256 return nullptr; 257 } 258 sp<ICameraServiceProxy> proxyBinder = interface_cast<ICameraServiceProxy>(binder); 259 return proxyBinder; 260} 261 262void CameraService::pingCameraServiceProxy() { 263 sp<ICameraServiceProxy> proxyBinder = getCameraServiceProxy(); 264 if (proxyBinder == nullptr) return; 265 proxyBinder->pingForUserUpdate(); 266} 267 268CameraService::~CameraService() { 269 if (mModule) { 270 delete mModule; 271 mModule = nullptr; 272 } 273 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 274 gCameraService = nullptr; 275} 276 277void CameraService::onDeviceStatusChanged(camera_device_status_t cameraId, 278 camera_device_status_t newStatus) { 279 ALOGI("%s: Status changed for cameraId=%d, newStatus=%d", __FUNCTION__, 280 cameraId, newStatus); 281 282 String8 id = String8::format("%d", cameraId); 283 std::shared_ptr<CameraState> state = getCameraState(id); 284 285 if (state == nullptr) { 286 ALOGE("%s: Bad camera ID %d", __FUNCTION__, cameraId); 287 return; 288 } 289 290 ICameraServiceListener::Status oldStatus = state->getStatus(); 291 292 if (oldStatus == static_cast<ICameraServiceListener::Status>(newStatus)) { 293 ALOGE("%s: State transition to the same status %#x not allowed", __FUNCTION__, newStatus); 294 return; 295 } 296 297 if (newStatus == CAMERA_DEVICE_STATUS_NOT_PRESENT) { 298 logDeviceRemoved(id, String8::format("Device status changed from %d to %d", oldStatus, 299 newStatus)); 300 sp<BasicClient> clientToDisconnect; 301 { 302 // Don't do this in updateStatus to avoid deadlock over mServiceLock 303 Mutex::Autolock lock(mServiceLock); 304 305 // Set the device status to NOT_PRESENT, clients will no longer be able to connect 306 // to this device until the status changes 307 updateStatus(ICameraServiceListener::STATUS_NOT_PRESENT, id); 308 309 // Remove cached shim parameters 310 state->setShimParams(CameraParameters()); 311 312 // Remove the client from the list of active clients 313 clientToDisconnect = removeClientLocked(id); 314 315 // Notify the client of disconnection 316 clientToDisconnect->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 317 CaptureResultExtras{}); 318 } 319 320 ALOGI("%s: Client for camera ID %s evicted due to device status change from HAL", 321 __FUNCTION__, id.string()); 322 323 // Disconnect client 324 if (clientToDisconnect.get() != nullptr) { 325 // Ensure not in binder RPC so client disconnect PID checks work correctly 326 LOG_ALWAYS_FATAL_IF(getCallingPid() != getpid(), 327 "onDeviceStatusChanged must be called from the camera service process!"); 328 clientToDisconnect->disconnect(); 329 } 330 331 } else { 332 if (oldStatus == ICameraServiceListener::Status::STATUS_NOT_PRESENT) { 333 logDeviceAdded(id, String8::format("Device status changed from %d to %d", oldStatus, 334 newStatus)); 335 } 336 updateStatus(static_cast<ICameraServiceListener::Status>(newStatus), id); 337 } 338 339} 340 341void CameraService::onTorchStatusChanged(const String8& cameraId, 342 ICameraServiceListener::TorchStatus newStatus) { 343 Mutex::Autolock al(mTorchStatusMutex); 344 onTorchStatusChangedLocked(cameraId, newStatus); 345} 346 347void CameraService::onTorchStatusChangedLocked(const String8& cameraId, 348 ICameraServiceListener::TorchStatus newStatus) { 349 ALOGI("%s: Torch status changed for cameraId=%s, newStatus=%d", 350 __FUNCTION__, cameraId.string(), newStatus); 351 352 ICameraServiceListener::TorchStatus status; 353 status_t res = getTorchStatusLocked(cameraId, &status); 354 if (res) { 355 ALOGE("%s: cannot get torch status of camera %s: %s (%d)", 356 __FUNCTION__, cameraId.string(), strerror(-res), res); 357 return; 358 } 359 if (status == newStatus) { 360 return; 361 } 362 363 res = setTorchStatusLocked(cameraId, newStatus); 364 if (res) { 365 ALOGE("%s: Failed to set the torch status", __FUNCTION__, (uint32_t)newStatus); 366 return; 367 } 368 369 { 370 // Update battery life logging for flashlight 371 Mutex::Autolock al(mTorchUidMapMutex); 372 auto iter = mTorchUidMap.find(cameraId); 373 if (iter != mTorchUidMap.end()) { 374 int oldUid = iter->second.second; 375 int newUid = iter->second.first; 376 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 377 if (oldUid != newUid) { 378 // If the UID has changed, log the status and update current UID in mTorchUidMap 379 if (status == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 380 notifier.noteFlashlightOff(cameraId, oldUid); 381 } 382 if (newStatus == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 383 notifier.noteFlashlightOn(cameraId, newUid); 384 } 385 iter->second.second = newUid; 386 } else { 387 // If the UID has not changed, log the status 388 if (newStatus == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 389 notifier.noteFlashlightOn(cameraId, oldUid); 390 } else { 391 notifier.noteFlashlightOff(cameraId, oldUid); 392 } 393 } 394 } 395 } 396 397 { 398 Mutex::Autolock lock(mStatusListenerLock); 399 for (auto& i : mListenerList) { 400 i->onTorchStatusChanged(newStatus, String16{cameraId}); 401 } 402 } 403} 404 405int32_t CameraService::getNumberOfCameras() { 406 return getNumberOfCameras(CAMERA_TYPE_BACKWARD_COMPATIBLE); 407} 408 409int32_t CameraService::getNumberOfCameras(int type) { 410 switch (type) { 411 case CAMERA_TYPE_BACKWARD_COMPATIBLE: 412 return mNumberOfNormalCameras; 413 case CAMERA_TYPE_ALL: 414 return mNumberOfCameras; 415 default: 416 ALOGW("%s: Unknown camera type %d, returning 0", 417 __FUNCTION__, type); 418 return 0; 419 } 420} 421 422status_t CameraService::getCameraInfo(int cameraId, 423 struct CameraInfo* cameraInfo) { 424 if (!mModule) { 425 return -ENODEV; 426 } 427 428 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 429 return BAD_VALUE; 430 } 431 432 struct camera_info info; 433 status_t rc = filterGetInfoErrorCode( 434 mModule->getCameraInfo(cameraId, &info)); 435 cameraInfo->facing = info.facing; 436 cameraInfo->orientation = info.orientation; 437 return rc; 438} 439 440int CameraService::cameraIdToInt(const String8& cameraId) { 441 errno = 0; 442 size_t pos = 0; 443 int ret = stoi(std::string{cameraId.string()}, &pos); 444 if (errno != 0 || pos != cameraId.size()) { 445 return -1; 446 } 447 return ret; 448} 449 450status_t CameraService::generateShimMetadata(int cameraId, /*out*/CameraMetadata* cameraInfo) { 451 status_t ret = OK; 452 struct CameraInfo info; 453 if ((ret = getCameraInfo(cameraId, &info)) != OK) { 454 return ret; 455 } 456 457 CameraMetadata shimInfo; 458 int32_t orientation = static_cast<int32_t>(info.orientation); 459 if ((ret = shimInfo.update(ANDROID_SENSOR_ORIENTATION, &orientation, 1)) != OK) { 460 return ret; 461 } 462 463 uint8_t facing = (info.facing == CAMERA_FACING_FRONT) ? 464 ANDROID_LENS_FACING_FRONT : ANDROID_LENS_FACING_BACK; 465 if ((ret = shimInfo.update(ANDROID_LENS_FACING, &facing, 1)) != OK) { 466 return ret; 467 } 468 469 CameraParameters shimParams; 470 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 471 // Error logged by callee 472 return ret; 473 } 474 475 Vector<Size> sizes; 476 Vector<Size> jpegSizes; 477 Vector<int32_t> formats; 478 const char* supportedPreviewFormats; 479 { 480 shimParams.getSupportedPreviewSizes(/*out*/sizes); 481 shimParams.getSupportedPreviewFormats(/*out*/formats); 482 shimParams.getSupportedPictureSizes(/*out*/jpegSizes); 483 } 484 485 // Always include IMPLEMENTATION_DEFINED 486 formats.add(HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED); 487 488 const size_t INTS_PER_CONFIG = 4; 489 490 // Build available stream configurations metadata 491 size_t streamConfigSize = (sizes.size() * formats.size() + jpegSizes.size()) * INTS_PER_CONFIG; 492 493 Vector<int32_t> streamConfigs; 494 streamConfigs.setCapacity(streamConfigSize); 495 496 for (size_t i = 0; i < formats.size(); ++i) { 497 for (size_t j = 0; j < sizes.size(); ++j) { 498 streamConfigs.add(formats[i]); 499 streamConfigs.add(sizes[j].width); 500 streamConfigs.add(sizes[j].height); 501 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 502 } 503 } 504 505 for (size_t i = 0; i < jpegSizes.size(); ++i) { 506 streamConfigs.add(HAL_PIXEL_FORMAT_BLOB); 507 streamConfigs.add(jpegSizes[i].width); 508 streamConfigs.add(jpegSizes[i].height); 509 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 510 } 511 512 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS, 513 streamConfigs.array(), streamConfigSize)) != OK) { 514 return ret; 515 } 516 517 int64_t fakeMinFrames[0]; 518 // TODO: Fixme, don't fake min frame durations. 519 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS, 520 fakeMinFrames, 0)) != OK) { 521 return ret; 522 } 523 524 int64_t fakeStalls[0]; 525 // TODO: Fixme, don't fake stall durations. 526 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STALL_DURATIONS, 527 fakeStalls, 0)) != OK) { 528 return ret; 529 } 530 531 *cameraInfo = shimInfo; 532 return OK; 533} 534 535status_t CameraService::getCameraCharacteristics(int cameraId, 536 CameraMetadata* cameraInfo) { 537 if (!cameraInfo) { 538 ALOGE("%s: cameraInfo is NULL", __FUNCTION__); 539 return BAD_VALUE; 540 } 541 542 if (!mModule) { 543 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 544 return -ENODEV; 545 } 546 547 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 548 ALOGE("%s: Invalid camera id: %d", __FUNCTION__, cameraId); 549 return BAD_VALUE; 550 } 551 552 int facing; 553 status_t ret = OK; 554 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0 || 555 getDeviceVersion(cameraId, &facing) <= CAMERA_DEVICE_API_VERSION_2_1 ) { 556 /** 557 * Backwards compatibility mode for old HALs: 558 * - Convert CameraInfo into static CameraMetadata properties. 559 * - Retrieve cached CameraParameters for this camera. If none exist, 560 * attempt to open CameraClient and retrieve the CameraParameters. 561 * - Convert cached CameraParameters into static CameraMetadata 562 * properties. 563 */ 564 ALOGI("%s: Switching to HAL1 shim implementation...", __FUNCTION__); 565 566 if ((ret = generateShimMetadata(cameraId, cameraInfo)) != OK) { 567 return ret; 568 } 569 570 } else { 571 /** 572 * Normal HAL 2.1+ codepath. 573 */ 574 struct camera_info info; 575 ret = filterGetInfoErrorCode(mModule->getCameraInfo(cameraId, &info)); 576 *cameraInfo = info.static_camera_characteristics; 577 } 578 579 return ret; 580} 581 582int CameraService::getCallingPid() { 583 return IPCThreadState::self()->getCallingPid(); 584} 585 586int CameraService::getCallingUid() { 587 return IPCThreadState::self()->getCallingUid(); 588} 589 590String8 CameraService::getFormattedCurrentTime() { 591 time_t now = time(nullptr); 592 char formattedTime[64]; 593 strftime(formattedTime, sizeof(formattedTime), "%m-%d %H:%M:%S", localtime(&now)); 594 return String8(formattedTime); 595} 596 597int CameraService::getCameraPriorityFromProcState(int procState) { 598 // Find the priority for the camera usage based on the process state. Higher priority clients 599 // win for evictions. 600 if (procState < 0) { 601 ALOGE("%s: Received invalid process state %d from ActivityManagerService!", __FUNCTION__, 602 procState); 603 return -1; 604 } 605 // Treat sleeping TOP processes the same as regular TOP processes, for 606 // access priority. This is important for lock-screen camera launch scenarios 607 if (procState == PROCESS_STATE_TOP_SLEEPING) { 608 procState = PROCESS_STATE_TOP; 609 } 610 return INT_MAX - procState; 611} 612 613status_t CameraService::getCameraVendorTagDescriptor(/*out*/sp<VendorTagDescriptor>& desc) { 614 if (!mModule) { 615 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 616 return -ENODEV; 617 } 618 619 desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 620 return OK; 621} 622 623int CameraService::getDeviceVersion(int cameraId, int* facing) { 624 struct camera_info info; 625 if (mModule->getCameraInfo(cameraId, &info) != OK) { 626 return -1; 627 } 628 629 int deviceVersion; 630 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) { 631 deviceVersion = info.device_version; 632 } else { 633 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 634 } 635 636 if (facing) { 637 *facing = info.facing; 638 } 639 640 return deviceVersion; 641} 642 643status_t CameraService::filterGetInfoErrorCode(status_t err) { 644 switch(err) { 645 case NO_ERROR: 646 case -EINVAL: 647 return err; 648 default: 649 break; 650 } 651 return -ENODEV; 652} 653 654bool CameraService::setUpVendorTags() { 655 vendor_tag_ops_t vOps = vendor_tag_ops_t(); 656 657 // Check if vendor operations have been implemented 658 if (!mModule->isVendorTagDefined()) { 659 ALOGI("%s: No vendor tags defined for this device.", __FUNCTION__); 660 return false; 661 } 662 663 ATRACE_BEGIN("camera3->get_metadata_vendor_tag_ops"); 664 mModule->getVendorTagOps(&vOps); 665 ATRACE_END(); 666 667 // Ensure all vendor operations are present 668 if (vOps.get_tag_count == NULL || vOps.get_all_tags == NULL || 669 vOps.get_section_name == NULL || vOps.get_tag_name == NULL || 670 vOps.get_tag_type == NULL) { 671 ALOGE("%s: Vendor tag operations not fully defined. Ignoring definitions." 672 , __FUNCTION__); 673 return false; 674 } 675 676 // Read all vendor tag definitions into a descriptor 677 sp<VendorTagDescriptor> desc; 678 status_t res; 679 if ((res = VendorTagDescriptor::createDescriptorFromOps(&vOps, /*out*/desc)) 680 != OK) { 681 ALOGE("%s: Could not generate descriptor from vendor tag operations," 682 "received error %s (%d). Camera clients will not be able to use" 683 "vendor tags", __FUNCTION__, strerror(res), res); 684 return false; 685 } 686 687 // Set the global descriptor to use with camera metadata 688 VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc); 689 return true; 690} 691 692status_t CameraService::makeClient(const sp<CameraService>& cameraService, 693 const sp<IInterface>& cameraCb, const String16& packageName, const String8& cameraId, 694 int facing, int clientPid, uid_t clientUid, int servicePid, bool legacyMode, 695 int halVersion, int deviceVersion, apiLevel effectiveApiLevel, 696 /*out*/sp<BasicClient>* client) { 697 698 // TODO: Update CameraClients + HAL interface to use strings for Camera IDs 699 int id = cameraIdToInt(cameraId); 700 if (id == -1) { 701 ALOGE("%s: Invalid camera ID %s, cannot convert to integer.", __FUNCTION__, 702 cameraId.string()); 703 return BAD_VALUE; 704 } 705 706 if (halVersion < 0 || halVersion == deviceVersion) { 707 // Default path: HAL version is unspecified by caller, create CameraClient 708 // based on device version reported by the HAL. 709 switch(deviceVersion) { 710 case CAMERA_DEVICE_API_VERSION_1_0: 711 if (effectiveApiLevel == API_1) { // Camera1 API route 712 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 713 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 714 clientPid, clientUid, getpid(), legacyMode); 715 } else { // Camera2 API route 716 ALOGW("Camera using old HAL version: %d", deviceVersion); 717 return -EOPNOTSUPP; 718 } 719 break; 720 case CAMERA_DEVICE_API_VERSION_2_0: 721 case CAMERA_DEVICE_API_VERSION_2_1: 722 case CAMERA_DEVICE_API_VERSION_3_0: 723 case CAMERA_DEVICE_API_VERSION_3_1: 724 case CAMERA_DEVICE_API_VERSION_3_2: 725 case CAMERA_DEVICE_API_VERSION_3_3: 726 if (effectiveApiLevel == API_1) { // Camera1 API route 727 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 728 *client = new Camera2Client(cameraService, tmp, packageName, id, facing, 729 clientPid, clientUid, servicePid, legacyMode); 730 } else { // Camera2 API route 731 sp<ICameraDeviceCallbacks> tmp = 732 static_cast<ICameraDeviceCallbacks*>(cameraCb.get()); 733 *client = new CameraDeviceClient(cameraService, tmp, packageName, id, 734 facing, clientPid, clientUid, servicePid); 735 } 736 break; 737 default: 738 // Should not be reachable 739 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 740 return INVALID_OPERATION; 741 } 742 } else { 743 // A particular HAL version is requested by caller. Create CameraClient 744 // based on the requested HAL version. 745 if (deviceVersion > CAMERA_DEVICE_API_VERSION_1_0 && 746 halVersion == CAMERA_DEVICE_API_VERSION_1_0) { 747 // Only support higher HAL version device opened as HAL1.0 device. 748 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 749 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 750 clientPid, clientUid, servicePid, legacyMode); 751 } else { 752 // Other combinations (e.g. HAL3.x open as HAL2.x) are not supported yet. 753 ALOGE("Invalid camera HAL version %x: HAL %x device can only be" 754 " opened as HAL %x device", halVersion, deviceVersion, 755 CAMERA_DEVICE_API_VERSION_1_0); 756 return INVALID_OPERATION; 757 } 758 } 759 return NO_ERROR; 760} 761 762String8 CameraService::toString(std::set<userid_t> intSet) { 763 String8 s(""); 764 bool first = true; 765 for (userid_t i : intSet) { 766 if (first) { 767 s.appendFormat("%d", i); 768 first = false; 769 } else { 770 s.appendFormat(", %d", i); 771 } 772 } 773 return s; 774} 775 776status_t CameraService::initializeShimMetadata(int cameraId) { 777 int uid = getCallingUid(); 778 779 String16 internalPackageName("media"); 780 String8 id = String8::format("%d", cameraId); 781 status_t ret = NO_ERROR; 782 sp<Client> tmp = nullptr; 783 if ((ret = connectHelper<ICameraClient,Client>(sp<ICameraClient>{nullptr}, id, 784 static_cast<int>(CAMERA_HAL_API_VERSION_UNSPECIFIED), internalPackageName, uid, API_1, 785 false, true, tmp)) != NO_ERROR) { 786 ALOGE("%s: Error %d (%s) initializing shim metadata.", __FUNCTION__, ret, strerror(ret)); 787 return ret; 788 } 789 return NO_ERROR; 790} 791 792status_t CameraService::getLegacyParametersLazy(int cameraId, 793 /*out*/ 794 CameraParameters* parameters) { 795 796 ALOGV("%s: for cameraId: %d", __FUNCTION__, cameraId); 797 798 status_t ret = 0; 799 800 if (parameters == NULL) { 801 ALOGE("%s: parameters must not be null", __FUNCTION__); 802 return BAD_VALUE; 803 } 804 805 String8 id = String8::format("%d", cameraId); 806 807 // Check if we already have parameters 808 { 809 // Scope for service lock 810 Mutex::Autolock lock(mServiceLock); 811 auto cameraState = getCameraState(id); 812 if (cameraState == nullptr) { 813 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 814 return BAD_VALUE; 815 } 816 CameraParameters p = cameraState->getShimParams(); 817 if (!p.isEmpty()) { 818 *parameters = p; 819 return NO_ERROR; 820 } 821 } 822 823 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 824 ret = initializeShimMetadata(cameraId); 825 IPCThreadState::self()->restoreCallingIdentity(token); 826 if (ret != NO_ERROR) { 827 // Error already logged by callee 828 return ret; 829 } 830 831 // Check for parameters again 832 { 833 // Scope for service lock 834 Mutex::Autolock lock(mServiceLock); 835 auto cameraState = getCameraState(id); 836 if (cameraState == nullptr) { 837 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 838 return BAD_VALUE; 839 } 840 CameraParameters p = cameraState->getShimParams(); 841 if (!p.isEmpty()) { 842 *parameters = p; 843 return NO_ERROR; 844 } 845 } 846 847 ALOGE("%s: Parameters were not initialized, or were empty. Device may not be present.", 848 __FUNCTION__); 849 return INVALID_OPERATION; 850} 851 852status_t CameraService::validateConnectLocked(const String8& cameraId, /*inout*/int& clientUid) 853 const { 854 855 int callingPid = getCallingPid(); 856 857 if (clientUid == USE_CALLING_UID) { 858 clientUid = getCallingUid(); 859 } else { 860 // We only trust our own process to forward client UIDs 861 if (callingPid != getpid()) { 862 ALOGE("CameraService::connect X (PID %d) rejected (don't trust clientUid %d)", 863 callingPid, clientUid); 864 return PERMISSION_DENIED; 865 } 866 } 867 868 if (!mModule) { 869 ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)", 870 callingPid); 871 return -ENODEV; 872 } 873 874 if (getCameraState(cameraId) == nullptr) { 875 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 876 cameraId.string()); 877 return -ENODEV; 878 } 879 880 // Check device policy for this camera 881 char value[PROPERTY_VALUE_MAX]; 882 char key[PROPERTY_KEY_MAX]; 883 userid_t clientUserId = multiuser_get_user_id(clientUid); 884 snprintf(key, PROPERTY_KEY_MAX, "sys.secpolicy.camera.off_%d", clientUserId); 885 property_get(key, value, "0"); 886 if (strcmp(value, "1") == 0) { 887 // Camera is disabled by DevicePolicyManager. 888 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is disabled by device " 889 "policy)", callingPid, cameraId.string()); 890 return -EACCES; 891 } 892 893 // Only allow clients who are being used by the current foreground device user, unless calling 894 // from our own process. 895 if (callingPid != getpid() && (mAllowedUsers.find(clientUserId) == mAllowedUsers.end())) { 896 ALOGE("CameraService::connect X (PID %d) rejected (cannot connect from " 897 "device user %d, currently allowed device users: %s)", callingPid, clientUserId, 898 toString(mAllowedUsers).string()); 899 return PERMISSION_DENIED; 900 } 901 902 return checkIfDeviceIsUsable(cameraId); 903} 904 905status_t CameraService::checkIfDeviceIsUsable(const String8& cameraId) const { 906 auto cameraState = getCameraState(cameraId); 907 int callingPid = getCallingPid(); 908 if (cameraState == nullptr) { 909 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 910 cameraId.string()); 911 return -ENODEV; 912 } 913 914 ICameraServiceListener::Status currentStatus = cameraState->getStatus(); 915 if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { 916 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is not connected)", 917 callingPid, cameraId.string()); 918 return -ENODEV; 919 } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) { 920 ALOGE("CameraService::connect X (PID %d) rejected, (camera %s is initializing)", 921 callingPid, cameraId.string()); 922 return -EBUSY; 923 } 924 925 return NO_ERROR; 926} 927 928void CameraService::finishConnectLocked(const sp<BasicClient>& client, 929 const CameraService::DescriptorPtr& desc) { 930 931 // Make a descriptor for the incoming client 932 auto clientDescriptor = CameraService::CameraClientManager::makeClientDescriptor(client, desc); 933 auto evicted = mActiveClientManager.addAndEvict(clientDescriptor); 934 935 logConnected(desc->getKey(), static_cast<int>(desc->getOwnerId()), 936 String8(client->getPackageName())); 937 938 if (evicted.size() > 0) { 939 // This should never happen - clients should already have been removed in disconnect 940 for (auto& i : evicted) { 941 ALOGE("%s: Invalid state: Client for camera %s was not removed in disconnect", 942 __FUNCTION__, i->getKey().string()); 943 } 944 945 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, clients not evicted properly", 946 __FUNCTION__); 947 } 948 949 // And register a death notification for the client callback. Do 950 // this last to avoid Binder policy where a nested Binder 951 // transaction might be pre-empted to service the client death 952 // notification if the client process dies before linkToDeath is 953 // invoked. 954 sp<IBinder> remoteCallback = client->getRemote(); 955 if (remoteCallback != nullptr) { 956 remoteCallback->linkToDeath(this); 957 } 958} 959 960status_t CameraService::handleEvictionsLocked(const String8& cameraId, int clientPid, 961 apiLevel effectiveApiLevel, const sp<IBinder>& remoteCallback, const String8& packageName, 962 /*out*/ 963 sp<BasicClient>* client, 964 std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>* partial) { 965 966 status_t ret = NO_ERROR; 967 std::vector<DescriptorPtr> evictedClients; 968 DescriptorPtr clientDescriptor; 969 { 970 if (effectiveApiLevel == API_1) { 971 // If we are using API1, any existing client for this camera ID with the same remote 972 // should be returned rather than evicted to allow MediaRecorder to work properly. 973 974 auto current = mActiveClientManager.get(cameraId); 975 if (current != nullptr) { 976 auto clientSp = current->getValue(); 977 if (clientSp.get() != nullptr) { // should never be needed 978 if (!clientSp->canCastToApiClient(effectiveApiLevel)) { 979 ALOGW("CameraService connect called from same client, but with a different" 980 " API level, evicting prior client..."); 981 } else if (clientSp->getRemote() == remoteCallback) { 982 ALOGI("CameraService::connect X (PID %d) (second call from same" 983 " app binder, returning the same client)", clientPid); 984 *client = clientSp; 985 return NO_ERROR; 986 } 987 } 988 } 989 } 990 991 // Return error if the device was unplugged or removed by the HAL for some reason 992 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 993 return ret; 994 } 995 996 // Get current active client PIDs 997 std::vector<int> ownerPids(mActiveClientManager.getAllOwners()); 998 ownerPids.push_back(clientPid); 999 1000 // Use the value +PROCESS_STATE_NONEXISTENT, to avoid taking 1001 // address of PROCESS_STATE_NONEXISTENT as a reference argument 1002 // for the vector constructor. PROCESS_STATE_NONEXISTENT does 1003 // not have an out-of-class definition. 1004 std::vector<int> priorities(ownerPids.size(), +PROCESS_STATE_NONEXISTENT); 1005 1006 // Get priorites of all active PIDs 1007 ProcessInfoService::getProcessStatesFromPids(ownerPids.size(), &ownerPids[0], 1008 /*out*/&priorities[0]); 1009 1010 // Update all active clients' priorities 1011 std::map<int,int> pidToPriorityMap; 1012 for (size_t i = 0; i < ownerPids.size() - 1; i++) { 1013 pidToPriorityMap.emplace(ownerPids[i], getCameraPriorityFromProcState(priorities[i])); 1014 } 1015 mActiveClientManager.updatePriorities(pidToPriorityMap); 1016 1017 // Get state for the given cameraId 1018 auto state = getCameraState(cameraId); 1019 if (state == nullptr) { 1020 ALOGE("CameraService::connect X (PID %d) rejected (no camera device with ID %s)", 1021 clientPid, cameraId.string()); 1022 return BAD_VALUE; 1023 } 1024 1025 // Make descriptor for incoming client 1026 clientDescriptor = CameraClientManager::makeClientDescriptor(cameraId, 1027 sp<BasicClient>{nullptr}, static_cast<int32_t>(state->getCost()), 1028 state->getConflicting(), 1029 getCameraPriorityFromProcState(priorities[priorities.size() - 1]), clientPid); 1030 1031 // Find clients that would be evicted 1032 auto evicted = mActiveClientManager.wouldEvict(clientDescriptor); 1033 1034 // If the incoming client was 'evicted,' higher priority clients have the camera in the 1035 // background, so we cannot do evictions 1036 if (std::find(evicted.begin(), evicted.end(), clientDescriptor) != evicted.end()) { 1037 ALOGE("CameraService::connect X (PID %d) rejected (existing client(s) with higher" 1038 " priority).", clientPid); 1039 1040 sp<BasicClient> clientSp = clientDescriptor->getValue(); 1041 String8 curTime = getFormattedCurrentTime(); 1042 auto incompatibleClients = 1043 mActiveClientManager.getIncompatibleClients(clientDescriptor); 1044 1045 String8 msg = String8::format("%s : DENIED connect device %s client for package %s " 1046 "(PID %d, priority %d) due to eviction policy", curTime.string(), 1047 cameraId.string(), packageName.string(), clientPid, 1048 getCameraPriorityFromProcState(priorities[priorities.size() - 1])); 1049 1050 for (auto& i : incompatibleClients) { 1051 msg.appendFormat("\n - Blocked by existing device %s client for package %s" 1052 "(PID %" PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1053 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1054 i->getPriority()); 1055 ALOGE(" Conflicts with: Device %s, client package %s (PID %" 1056 PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1057 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1058 i->getPriority()); 1059 } 1060 1061 // Log the client's attempt 1062 Mutex::Autolock l(mLogLock); 1063 mEventLog.add(msg); 1064 1065 return -EBUSY; 1066 } 1067 1068 for (auto& i : evicted) { 1069 sp<BasicClient> clientSp = i->getValue(); 1070 if (clientSp.get() == nullptr) { 1071 ALOGE("%s: Invalid state: Null client in active client list.", __FUNCTION__); 1072 1073 // TODO: Remove this 1074 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, null client in active list", 1075 __FUNCTION__); 1076 mActiveClientManager.remove(i); 1077 continue; 1078 } 1079 1080 ALOGE("CameraService::connect evicting conflicting client for camera ID %s", 1081 i->getKey().string()); 1082 evictedClients.push_back(i); 1083 1084 // Log the clients evicted 1085 logEvent(String8::format("EVICT device %s client held by package %s (PID" 1086 " %" PRId32 ", priority %" PRId32 ")\n - Evicted by device %s client for" 1087 " package %s (PID %d, priority %" PRId32 ")", 1088 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1089 i->getOwnerId(), i->getPriority(), cameraId.string(), 1090 packageName.string(), clientPid, 1091 getCameraPriorityFromProcState(priorities[priorities.size() - 1]))); 1092 1093 // Notify the client of disconnection 1094 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1095 CaptureResultExtras()); 1096 } 1097 } 1098 1099 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1100 // other clients from connecting in mServiceLockWrapper if held 1101 mServiceLock.unlock(); 1102 1103 // Clear caller identity temporarily so client disconnect PID checks work correctly 1104 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1105 1106 // Destroy evicted clients 1107 for (auto& i : evictedClients) { 1108 // Disconnect is blocking, and should only have returned when HAL has cleaned up 1109 i->getValue()->disconnect(); // Clients will remove themselves from the active client list 1110 } 1111 1112 IPCThreadState::self()->restoreCallingIdentity(token); 1113 1114 for (const auto& i : evictedClients) { 1115 ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")", 1116 __FUNCTION__, i->getKey().string(), i->getOwnerId()); 1117 ret = mActiveClientManager.waitUntilRemoved(i, DEFAULT_DISCONNECT_TIMEOUT_NS); 1118 if (ret == TIMED_OUT) { 1119 ALOGE("%s: Timed out waiting for client for device %s to disconnect, " 1120 "current clients:\n%s", __FUNCTION__, i->getKey().string(), 1121 mActiveClientManager.toString().string()); 1122 return -EBUSY; 1123 } 1124 if (ret != NO_ERROR) { 1125 ALOGE("%s: Received error waiting for client for device %s to disconnect: %s (%d), " 1126 "current clients:\n%s", __FUNCTION__, i->getKey().string(), strerror(-ret), 1127 ret, mActiveClientManager.toString().string()); 1128 return ret; 1129 } 1130 } 1131 1132 evictedClients.clear(); 1133 1134 // Once clients have been disconnected, relock 1135 mServiceLock.lock(); 1136 1137 // Check again if the device was unplugged or something while we weren't holding mServiceLock 1138 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1139 return ret; 1140 } 1141 1142 *partial = clientDescriptor; 1143 return NO_ERROR; 1144} 1145 1146status_t CameraService::connect( 1147 const sp<ICameraClient>& cameraClient, 1148 int cameraId, 1149 const String16& clientPackageName, 1150 int clientUid, 1151 /*out*/ 1152 sp<ICamera>& device) { 1153 1154 status_t ret = NO_ERROR; 1155 String8 id = String8::format("%d", cameraId); 1156 sp<Client> client = nullptr; 1157 ret = connectHelper<ICameraClient,Client>(cameraClient, id, CAMERA_HAL_API_VERSION_UNSPECIFIED, 1158 clientPackageName, clientUid, API_1, false, false, /*out*/client); 1159 1160 if(ret != NO_ERROR) { 1161 logRejected(id, getCallingPid(), String8(clientPackageName), 1162 String8::format("%s (%d)", strerror(-ret), ret)); 1163 return ret; 1164 } 1165 1166 device = client; 1167 return NO_ERROR; 1168} 1169 1170status_t CameraService::connectLegacy( 1171 const sp<ICameraClient>& cameraClient, 1172 int cameraId, int halVersion, 1173 const String16& clientPackageName, 1174 int clientUid, 1175 /*out*/ 1176 sp<ICamera>& device) { 1177 1178 String8 id = String8::format("%d", cameraId); 1179 int apiVersion = mModule->getModuleApiVersion(); 1180 if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED && 1181 apiVersion < CAMERA_MODULE_API_VERSION_2_3) { 1182 /* 1183 * Either the HAL version is unspecified in which case this just creates 1184 * a camera client selected by the latest device version, or 1185 * it's a particular version in which case the HAL must supported 1186 * the open_legacy call 1187 */ 1188 ALOGE("%s: camera HAL module version %x doesn't support connecting to legacy HAL devices!", 1189 __FUNCTION__, apiVersion); 1190 logRejected(id, getCallingPid(), String8(clientPackageName), 1191 String8("HAL module version doesn't support legacy HAL connections")); 1192 return INVALID_OPERATION; 1193 } 1194 1195 status_t ret = NO_ERROR; 1196 sp<Client> client = nullptr; 1197 ret = connectHelper<ICameraClient,Client>(cameraClient, id, halVersion, clientPackageName, 1198 clientUid, API_1, true, false, /*out*/client); 1199 1200 if(ret != NO_ERROR) { 1201 logRejected(id, getCallingPid(), String8(clientPackageName), 1202 String8::format("%s (%d)", strerror(-ret), ret)); 1203 return ret; 1204 } 1205 1206 device = client; 1207 return NO_ERROR; 1208} 1209 1210status_t CameraService::connectDevice( 1211 const sp<ICameraDeviceCallbacks>& cameraCb, 1212 int cameraId, 1213 const String16& clientPackageName, 1214 int clientUid, 1215 /*out*/ 1216 sp<ICameraDeviceUser>& device) { 1217 1218 status_t ret = NO_ERROR; 1219 String8 id = String8::format("%d", cameraId); 1220 sp<CameraDeviceClient> client = nullptr; 1221 ret = connectHelper<ICameraDeviceCallbacks,CameraDeviceClient>(cameraCb, id, 1222 CAMERA_HAL_API_VERSION_UNSPECIFIED, clientPackageName, clientUid, API_2, false, false, 1223 /*out*/client); 1224 1225 if(ret != NO_ERROR) { 1226 logRejected(id, getCallingPid(), String8(clientPackageName), 1227 String8::format("%s (%d)", strerror(-ret), ret)); 1228 return ret; 1229 } 1230 1231 device = client; 1232 return NO_ERROR; 1233} 1234 1235status_t CameraService::setTorchMode(const String16& cameraId, bool enabled, 1236 const sp<IBinder>& clientBinder) { 1237 if (enabled && clientBinder == nullptr) { 1238 ALOGE("%s: torch client binder is NULL", __FUNCTION__); 1239 return -EINVAL; 1240 } 1241 1242 String8 id = String8(cameraId.string()); 1243 int uid = getCallingUid(); 1244 1245 // verify id is valid. 1246 auto state = getCameraState(id); 1247 if (state == nullptr) { 1248 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1249 return -EINVAL; 1250 } 1251 1252 ICameraServiceListener::Status cameraStatus = state->getStatus(); 1253 if (cameraStatus != ICameraServiceListener::STATUS_PRESENT && 1254 cameraStatus != ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1255 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1256 return -EINVAL; 1257 } 1258 1259 { 1260 Mutex::Autolock al(mTorchStatusMutex); 1261 ICameraServiceListener::TorchStatus status; 1262 status_t res = getTorchStatusLocked(id, &status); 1263 if (res) { 1264 ALOGE("%s: getting current torch status failed for camera %s", 1265 __FUNCTION__, id.string()); 1266 return -EINVAL; 1267 } 1268 1269 if (status == ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE) { 1270 if (cameraStatus == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1271 ALOGE("%s: torch mode of camera %s is not available because " 1272 "camera is in use", __FUNCTION__, id.string()); 1273 return -EBUSY; 1274 } else { 1275 ALOGE("%s: torch mode of camera %s is not available due to " 1276 "insufficient resources", __FUNCTION__, id.string()); 1277 return -EUSERS; 1278 } 1279 } 1280 } 1281 1282 { 1283 // Update UID map - this is used in the torch status changed callbacks, so must be done 1284 // before setTorchMode 1285 Mutex::Autolock al(mTorchUidMapMutex); 1286 if (mTorchUidMap.find(id) == mTorchUidMap.end()) { 1287 mTorchUidMap[id].first = uid; 1288 mTorchUidMap[id].second = uid; 1289 } else { 1290 // Set the pending UID 1291 mTorchUidMap[id].first = uid; 1292 } 1293 } 1294 1295 status_t res = mFlashlight->setTorchMode(id, enabled); 1296 1297 if (res) { 1298 ALOGE("%s: setting torch mode of camera %s to %d failed. %s (%d)", 1299 __FUNCTION__, id.string(), enabled, strerror(-res), res); 1300 return res; 1301 } 1302 1303 { 1304 // update the link to client's death 1305 Mutex::Autolock al(mTorchClientMapMutex); 1306 ssize_t index = mTorchClientMap.indexOfKey(id); 1307 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 1308 if (enabled) { 1309 if (index == NAME_NOT_FOUND) { 1310 mTorchClientMap.add(id, clientBinder); 1311 } else { 1312 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1313 mTorchClientMap.replaceValueAt(index, clientBinder); 1314 } 1315 clientBinder->linkToDeath(this); 1316 } else if (index != NAME_NOT_FOUND) { 1317 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1318 } 1319 } 1320 1321 return OK; 1322} 1323 1324void CameraService::notifySystemEvent(int32_t eventId, const int32_t* args, size_t length) { 1325 switch(eventId) { 1326 case ICameraService::USER_SWITCHED: { 1327 doUserSwitch(/*newUserIds*/args, /*length*/length); 1328 break; 1329 } 1330 case ICameraService::NO_EVENT: 1331 default: { 1332 ALOGW("%s: Received invalid system event from system_server: %d", __FUNCTION__, 1333 eventId); 1334 break; 1335 } 1336 } 1337} 1338 1339status_t CameraService::addListener(const sp<ICameraServiceListener>& listener) { 1340 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); 1341 1342 if (listener == nullptr) { 1343 ALOGE("%s: Listener must not be null", __FUNCTION__); 1344 return BAD_VALUE; 1345 } 1346 1347 Mutex::Autolock lock(mServiceLock); 1348 1349 { 1350 Mutex::Autolock lock(mStatusListenerLock); 1351 for (auto& it : mListenerList) { 1352 if (IInterface::asBinder(it) == IInterface::asBinder(listener)) { 1353 ALOGW("%s: Tried to add listener %p which was already subscribed", 1354 __FUNCTION__, listener.get()); 1355 return ALREADY_EXISTS; 1356 } 1357 } 1358 1359 mListenerList.push_back(listener); 1360 } 1361 1362 1363 /* Immediately signal current status to this listener only */ 1364 { 1365 Mutex::Autolock lock(mCameraStatesLock); 1366 for (auto& i : mCameraStates) { 1367 // TODO: Update binder to use String16 for camera IDs and remove; 1368 int id = cameraIdToInt(i.first); 1369 if (id == -1) continue; 1370 1371 listener->onStatusChanged(i.second->getStatus(), id); 1372 } 1373 } 1374 1375 /* Immediately signal current torch status to this listener only */ 1376 { 1377 Mutex::Autolock al(mTorchStatusMutex); 1378 for (size_t i = 0; i < mTorchStatusMap.size(); i++ ) { 1379 String16 id = String16(mTorchStatusMap.keyAt(i).string()); 1380 listener->onTorchStatusChanged(mTorchStatusMap.valueAt(i), id); 1381 } 1382 } 1383 1384 return OK; 1385} 1386 1387status_t CameraService::removeListener(const sp<ICameraServiceListener>& listener) { 1388 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); 1389 1390 if (listener == 0) { 1391 ALOGE("%s: Listener must not be null", __FUNCTION__); 1392 return BAD_VALUE; 1393 } 1394 1395 Mutex::Autolock lock(mServiceLock); 1396 1397 { 1398 Mutex::Autolock lock(mStatusListenerLock); 1399 for (auto it = mListenerList.begin(); it != mListenerList.end(); it++) { 1400 if (IInterface::asBinder(*it) == IInterface::asBinder(listener)) { 1401 mListenerList.erase(it); 1402 return OK; 1403 } 1404 } 1405 } 1406 1407 ALOGW("%s: Tried to remove a listener %p which was not subscribed", 1408 __FUNCTION__, listener.get()); 1409 1410 return BAD_VALUE; 1411} 1412 1413status_t CameraService::getLegacyParameters(int cameraId, /*out*/String16* parameters) { 1414 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1415 1416 if (parameters == NULL) { 1417 ALOGE("%s: parameters must not be null", __FUNCTION__); 1418 return BAD_VALUE; 1419 } 1420 1421 status_t ret = 0; 1422 1423 CameraParameters shimParams; 1424 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 1425 // Error logged by caller 1426 return ret; 1427 } 1428 1429 String8 shimParamsString8 = shimParams.flatten(); 1430 String16 shimParamsString16 = String16(shimParamsString8); 1431 1432 *parameters = shimParamsString16; 1433 1434 return OK; 1435} 1436 1437status_t CameraService::supportsCameraApi(int cameraId, int apiVersion) { 1438 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1439 1440 switch (apiVersion) { 1441 case API_VERSION_1: 1442 case API_VERSION_2: 1443 break; 1444 default: 1445 ALOGE("%s: Bad API version %d", __FUNCTION__, apiVersion); 1446 return BAD_VALUE; 1447 } 1448 1449 int facing = -1; 1450 int deviceVersion = getDeviceVersion(cameraId, &facing); 1451 1452 switch(deviceVersion) { 1453 case CAMERA_DEVICE_API_VERSION_1_0: 1454 case CAMERA_DEVICE_API_VERSION_2_0: 1455 case CAMERA_DEVICE_API_VERSION_2_1: 1456 case CAMERA_DEVICE_API_VERSION_3_0: 1457 case CAMERA_DEVICE_API_VERSION_3_1: 1458 if (apiVersion == API_VERSION_2) { 1459 ALOGV("%s: Camera id %d uses HAL prior to HAL3.2, doesn't support api2 without shim", 1460 __FUNCTION__, cameraId); 1461 return -EOPNOTSUPP; 1462 } else { // if (apiVersion == API_VERSION_1) { 1463 ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported", 1464 __FUNCTION__, cameraId); 1465 return OK; 1466 } 1467 case CAMERA_DEVICE_API_VERSION_3_2: 1468 case CAMERA_DEVICE_API_VERSION_3_3: 1469 ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly", 1470 __FUNCTION__, cameraId); 1471 return OK; 1472 case -1: 1473 ALOGE("%s: Invalid camera id %d", __FUNCTION__, cameraId); 1474 return BAD_VALUE; 1475 default: 1476 ALOGE("%s: Unknown camera device HAL version: %d", __FUNCTION__, deviceVersion); 1477 return INVALID_OPERATION; 1478 } 1479 1480 return OK; 1481} 1482 1483void CameraService::removeByClient(const BasicClient* client) { 1484 Mutex::Autolock lock(mServiceLock); 1485 for (auto& i : mActiveClientManager.getAll()) { 1486 auto clientSp = i->getValue(); 1487 if (clientSp.get() == client) { 1488 mActiveClientManager.remove(i); 1489 } 1490 } 1491} 1492 1493bool CameraService::evictClientIdByRemote(const wp<IBinder>& remote) { 1494 const int callingPid = getCallingPid(); 1495 const int servicePid = getpid(); 1496 bool ret = false; 1497 { 1498 // Acquire mServiceLock and prevent other clients from connecting 1499 std::unique_ptr<AutoConditionLock> lock = 1500 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1501 1502 1503 std::vector<sp<BasicClient>> evicted; 1504 for (auto& i : mActiveClientManager.getAll()) { 1505 auto clientSp = i->getValue(); 1506 if (clientSp.get() == nullptr) { 1507 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1508 mActiveClientManager.remove(i); 1509 continue; 1510 } 1511 if (remote == clientSp->getRemote() && (callingPid == servicePid || 1512 callingPid == clientSp->getClientPid())) { 1513 mActiveClientManager.remove(i); 1514 evicted.push_back(clientSp); 1515 1516 // Notify the client of disconnection 1517 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1518 CaptureResultExtras()); 1519 } 1520 } 1521 1522 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1523 // other clients from connecting in mServiceLockWrapper if held 1524 mServiceLock.unlock(); 1525 1526 // Do not clear caller identity, remote caller should be client proccess 1527 1528 for (auto& i : evicted) { 1529 if (i.get() != nullptr) { 1530 i->disconnect(); 1531 ret = true; 1532 } 1533 } 1534 1535 // Reacquire mServiceLock 1536 mServiceLock.lock(); 1537 1538 } // lock is destroyed, allow further connect calls 1539 1540 return ret; 1541} 1542 1543 1544/** 1545 * Check camera capabilities, such as support for basic color operation 1546 */ 1547int CameraService::checkCameraCapabilities(int id, camera_info info, int *latestStrangeCameraId) { 1548 1549 // Assume all devices pre-v3.3 are backward-compatible 1550 bool isBackwardCompatible = true; 1551 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0 1552 && info.device_version >= CAMERA_DEVICE_API_VERSION_3_3) { 1553 isBackwardCompatible = false; 1554 status_t res; 1555 camera_metadata_ro_entry_t caps; 1556 res = find_camera_metadata_ro_entry( 1557 info.static_camera_characteristics, 1558 ANDROID_REQUEST_AVAILABLE_CAPABILITIES, 1559 &caps); 1560 if (res != 0) { 1561 ALOGW("%s: Unable to find camera capabilities for camera device %d", 1562 __FUNCTION__, id); 1563 caps.count = 0; 1564 } 1565 for (size_t i = 0; i < caps.count; i++) { 1566 if (caps.data.u8[i] == 1567 ANDROID_REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE) { 1568 isBackwardCompatible = true; 1569 break; 1570 } 1571 } 1572 } 1573 1574 if (!isBackwardCompatible) { 1575 mNumberOfNormalCameras--; 1576 *latestStrangeCameraId = id; 1577 } else { 1578 if (id > *latestStrangeCameraId) { 1579 ALOGE("%s: Normal camera ID %d higher than strange camera ID %d. " 1580 "This is not allowed due backward-compatibility requirements", 1581 __FUNCTION__, id, *latestStrangeCameraId); 1582 logServiceError("Invalid order of camera devices", ENODEV); 1583 mNumberOfCameras = 0; 1584 mNumberOfNormalCameras = 0; 1585 return INVALID_OPERATION; 1586 } 1587 } 1588 return OK; 1589} 1590 1591std::shared_ptr<CameraService::CameraState> CameraService::getCameraState( 1592 const String8& cameraId) const { 1593 std::shared_ptr<CameraState> state; 1594 { 1595 Mutex::Autolock lock(mCameraStatesLock); 1596 auto iter = mCameraStates.find(cameraId); 1597 if (iter != mCameraStates.end()) { 1598 state = iter->second; 1599 } 1600 } 1601 return state; 1602} 1603 1604sp<CameraService::BasicClient> CameraService::removeClientLocked(const String8& cameraId) { 1605 // Remove from active clients list 1606 auto clientDescriptorPtr = mActiveClientManager.remove(cameraId); 1607 if (clientDescriptorPtr == nullptr) { 1608 ALOGW("%s: Could not evict client, no client for camera ID %s", __FUNCTION__, 1609 cameraId.string()); 1610 return sp<BasicClient>{nullptr}; 1611 } 1612 1613 return clientDescriptorPtr->getValue(); 1614} 1615 1616void CameraService::doUserSwitch(const int32_t* newUserId, size_t length) { 1617 // Acquire mServiceLock and prevent other clients from connecting 1618 std::unique_ptr<AutoConditionLock> lock = 1619 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1620 1621 std::set<userid_t> newAllowedUsers; 1622 for (size_t i = 0; i < length; i++) { 1623 if (newUserId[i] < 0) { 1624 ALOGE("%s: Bad user ID %d given during user switch, ignoring.", 1625 __FUNCTION__, newUserId[i]); 1626 return; 1627 } 1628 newAllowedUsers.insert(static_cast<userid_t>(newUserId[i])); 1629 } 1630 1631 1632 if (newAllowedUsers == mAllowedUsers) { 1633 ALOGW("%s: Received notification of user switch with no updated user IDs.", __FUNCTION__); 1634 return; 1635 } 1636 1637 logUserSwitch(mAllowedUsers, newAllowedUsers); 1638 1639 mAllowedUsers = std::move(newAllowedUsers); 1640 1641 // Current user has switched, evict all current clients. 1642 std::vector<sp<BasicClient>> evicted; 1643 for (auto& i : mActiveClientManager.getAll()) { 1644 auto clientSp = i->getValue(); 1645 1646 if (clientSp.get() == nullptr) { 1647 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1648 continue; 1649 } 1650 1651 // Don't evict clients that are still allowed. 1652 uid_t clientUid = clientSp->getClientUid(); 1653 userid_t clientUserId = multiuser_get_user_id(clientUid); 1654 if (mAllowedUsers.find(clientUserId) != mAllowedUsers.end()) { 1655 continue; 1656 } 1657 1658 evicted.push_back(clientSp); 1659 1660 String8 curTime = getFormattedCurrentTime(); 1661 1662 ALOGE("Evicting conflicting client for camera ID %s due to user change", 1663 i->getKey().string()); 1664 1665 // Log the clients evicted 1666 logEvent(String8::format("EVICT device %s client held by package %s (PID %" 1667 PRId32 ", priority %" PRId32 ")\n - Evicted due to user switch.", 1668 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1669 i->getOwnerId(), i->getPriority())); 1670 1671 } 1672 1673 // Do not hold mServiceLock while disconnecting clients, but retain the condition 1674 // blocking other clients from connecting in mServiceLockWrapper if held. 1675 mServiceLock.unlock(); 1676 1677 // Clear caller identity temporarily so client disconnect PID checks work correctly 1678 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1679 1680 for (auto& i : evicted) { 1681 i->disconnect(); 1682 } 1683 1684 IPCThreadState::self()->restoreCallingIdentity(token); 1685 1686 // Reacquire mServiceLock 1687 mServiceLock.lock(); 1688} 1689 1690void CameraService::logEvent(const char* event) { 1691 String8 curTime = getFormattedCurrentTime(); 1692 Mutex::Autolock l(mLogLock); 1693 mEventLog.add(String8::format("%s : %s", curTime.string(), event)); 1694} 1695 1696void CameraService::logDisconnected(const char* cameraId, int clientPid, 1697 const char* clientPackage) { 1698 // Log the clients evicted 1699 logEvent(String8::format("DISCONNECT device %s client for package %s (PID %d)", cameraId, 1700 clientPackage, clientPid)); 1701} 1702 1703void CameraService::logConnected(const char* cameraId, int clientPid, 1704 const char* clientPackage) { 1705 // Log the clients evicted 1706 logEvent(String8::format("CONNECT device %s client for package %s (PID %d)", cameraId, 1707 clientPackage, clientPid)); 1708} 1709 1710void CameraService::logRejected(const char* cameraId, int clientPid, 1711 const char* clientPackage, const char* reason) { 1712 // Log the client rejected 1713 logEvent(String8::format("REJECT device %s client for package %s (PID %d), reason: (%s)", 1714 cameraId, clientPackage, clientPid, reason)); 1715} 1716 1717void CameraService::logUserSwitch(const std::set<userid_t>& oldUserIds, 1718 const std::set<userid_t>& newUserIds) { 1719 String8 newUsers = toString(newUserIds); 1720 String8 oldUsers = toString(oldUserIds); 1721 // Log the new and old users 1722 logEvent(String8::format("USER_SWITCH previous allowed users: %s , current allowed users: %s", 1723 oldUsers.string(), newUsers.string())); 1724} 1725 1726void CameraService::logDeviceRemoved(const char* cameraId, const char* reason) { 1727 // Log the device removal 1728 logEvent(String8::format("REMOVE device %s, reason: (%s)", cameraId, reason)); 1729} 1730 1731void CameraService::logDeviceAdded(const char* cameraId, const char* reason) { 1732 // Log the device removal 1733 logEvent(String8::format("ADD device %s, reason: (%s)", cameraId, reason)); 1734} 1735 1736void CameraService::logClientDied(int clientPid, const char* reason) { 1737 // Log the device removal 1738 logEvent(String8::format("DIED client(s) with PID %d, reason: (%s)", clientPid, reason)); 1739} 1740 1741void CameraService::logServiceError(const char* msg, int errorCode) { 1742 String8 curTime = getFormattedCurrentTime(); 1743 logEvent(String8::format("SERVICE ERROR: %s : %d (%s)", msg, errorCode, strerror(errorCode))); 1744} 1745 1746status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply, 1747 uint32_t flags) { 1748 1749 const int pid = getCallingPid(); 1750 const int selfPid = getpid(); 1751 1752 // Permission checks 1753 switch (code) { 1754 case BnCameraService::CONNECT: 1755 case BnCameraService::CONNECT_DEVICE: 1756 case BnCameraService::CONNECT_LEGACY: { 1757 if (pid != selfPid) { 1758 // we're called from a different process, do the real check 1759 if (!checkCallingPermission( 1760 String16("android.permission.CAMERA"))) { 1761 const int uid = getCallingUid(); 1762 ALOGE("Permission Denial: " 1763 "can't use the camera pid=%d, uid=%d", pid, uid); 1764 return PERMISSION_DENIED; 1765 } 1766 } 1767 break; 1768 } 1769 case BnCameraService::NOTIFY_SYSTEM_EVENT: { 1770 if (pid != selfPid) { 1771 // Ensure we're being called by system_server, or similar process with 1772 // permissions to notify the camera service about system events 1773 if (!checkCallingPermission( 1774 String16("android.permission.CAMERA_SEND_SYSTEM_EVENTS"))) { 1775 const int uid = getCallingUid(); 1776 ALOGE("Permission Denial: cannot send updates to camera service about system" 1777 " events from pid=%d, uid=%d", pid, uid); 1778 return PERMISSION_DENIED; 1779 } 1780 } 1781 break; 1782 } 1783 } 1784 1785 return BnCameraService::onTransact(code, data, reply, flags); 1786} 1787 1788// We share the media players for shutter and recording sound for all clients. 1789// A reference count is kept to determine when we will actually release the 1790// media players. 1791 1792MediaPlayer* CameraService::newMediaPlayer(const char *file) { 1793 MediaPlayer* mp = new MediaPlayer(); 1794 if (mp->setDataSource(NULL /* httpService */, file, NULL) == NO_ERROR) { 1795 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 1796 mp->prepare(); 1797 } else { 1798 ALOGE("Failed to load CameraService sounds: %s", file); 1799 return NULL; 1800 } 1801 return mp; 1802} 1803 1804void CameraService::loadSound() { 1805 Mutex::Autolock lock(mSoundLock); 1806 LOG1("CameraService::loadSound ref=%d", mSoundRef); 1807 if (mSoundRef++) return; 1808 1809 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 1810 mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 1811} 1812 1813void CameraService::releaseSound() { 1814 Mutex::Autolock lock(mSoundLock); 1815 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 1816 if (--mSoundRef) return; 1817 1818 for (int i = 0; i < NUM_SOUNDS; i++) { 1819 if (mSoundPlayer[i] != 0) { 1820 mSoundPlayer[i]->disconnect(); 1821 mSoundPlayer[i].clear(); 1822 } 1823 } 1824} 1825 1826void CameraService::playSound(sound_kind kind) { 1827 LOG1("playSound(%d)", kind); 1828 Mutex::Autolock lock(mSoundLock); 1829 sp<MediaPlayer> player = mSoundPlayer[kind]; 1830 if (player != 0) { 1831 player->seekTo(0); 1832 player->start(); 1833 } 1834} 1835 1836// ---------------------------------------------------------------------------- 1837 1838CameraService::Client::Client(const sp<CameraService>& cameraService, 1839 const sp<ICameraClient>& cameraClient, 1840 const String16& clientPackageName, 1841 int cameraId, int cameraFacing, 1842 int clientPid, uid_t clientUid, 1843 int servicePid) : 1844 CameraService::BasicClient(cameraService, 1845 IInterface::asBinder(cameraClient), 1846 clientPackageName, 1847 cameraId, cameraFacing, 1848 clientPid, clientUid, 1849 servicePid) 1850{ 1851 int callingPid = getCallingPid(); 1852 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 1853 1854 mRemoteCallback = cameraClient; 1855 1856 cameraService->loadSound(); 1857 1858 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 1859} 1860 1861// tear down the client 1862CameraService::Client::~Client() { 1863 ALOGV("~Client"); 1864 mDestructionStarted = true; 1865 1866 mCameraService->releaseSound(); 1867 // unconditionally disconnect. function is idempotent 1868 Client::disconnect(); 1869} 1870 1871CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 1872 const sp<IBinder>& remoteCallback, 1873 const String16& clientPackageName, 1874 int cameraId, int cameraFacing, 1875 int clientPid, uid_t clientUid, 1876 int servicePid): 1877 mClientPackageName(clientPackageName), mDisconnected(false) 1878{ 1879 mCameraService = cameraService; 1880 mRemoteBinder = remoteCallback; 1881 mCameraId = cameraId; 1882 mCameraFacing = cameraFacing; 1883 mClientPid = clientPid; 1884 mClientUid = clientUid; 1885 mServicePid = servicePid; 1886 mOpsActive = false; 1887 mDestructionStarted = false; 1888} 1889 1890CameraService::BasicClient::~BasicClient() { 1891 ALOGV("~BasicClient"); 1892 mDestructionStarted = true; 1893} 1894 1895void CameraService::BasicClient::disconnect() { 1896 if (mDisconnected) { 1897 return; 1898 } 1899 mDisconnected = true; 1900 1901 mCameraService->removeByClient(this); 1902 mCameraService->logDisconnected(String8::format("%d", mCameraId), mClientPid, 1903 String8(mClientPackageName)); 1904 1905 sp<IBinder> remote = getRemote(); 1906 if (remote != nullptr) { 1907 remote->unlinkToDeath(mCameraService); 1908 } 1909 1910 finishCameraOps(); 1911 ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid); 1912 1913 // client shouldn't be able to call into us anymore 1914 mClientPid = 0; 1915} 1916 1917String16 CameraService::BasicClient::getPackageName() const { 1918 return mClientPackageName; 1919} 1920 1921 1922int CameraService::BasicClient::getClientPid() const { 1923 return mClientPid; 1924} 1925 1926uid_t CameraService::BasicClient::getClientUid() const { 1927 return mClientUid; 1928} 1929 1930bool CameraService::BasicClient::canCastToApiClient(apiLevel level) const { 1931 // Defaults to API2. 1932 return level == API_2; 1933} 1934 1935status_t CameraService::BasicClient::startCameraOps() { 1936 int32_t res; 1937 // Notify app ops that the camera is not available 1938 mOpsCallback = new OpsCallback(this); 1939 1940 { 1941 ALOGV("%s: Start camera ops, package name = %s, client UID = %d", 1942 __FUNCTION__, String8(mClientPackageName).string(), mClientUid); 1943 } 1944 1945 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 1946 mClientPackageName, mOpsCallback); 1947 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 1948 mClientUid, mClientPackageName); 1949 1950 if (res == AppOpsManager::MODE_ERRORED) { 1951 ALOGI("Camera %d: Access for \"%s\" has been revoked", 1952 mCameraId, String8(mClientPackageName).string()); 1953 return PERMISSION_DENIED; 1954 } 1955 1956 if (res == AppOpsManager::MODE_IGNORED) { 1957 ALOGI("Camera %d: Access for \"%s\" has been restricted", 1958 mCameraId, String8(mClientPackageName).string()); 1959 // Return the same error as for device policy manager rejection 1960 return -EACCES; 1961 } 1962 1963 mOpsActive = true; 1964 1965 // Transition device availability listeners from PRESENT -> NOT_AVAILABLE 1966 mCameraService->updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 1967 String8::format("%d", mCameraId)); 1968 1969 // Transition device state to OPEN 1970 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_OPEN, 1971 String8::format("%d", mCameraId)); 1972 1973 return OK; 1974} 1975 1976status_t CameraService::BasicClient::finishCameraOps() { 1977 // Check if startCameraOps succeeded, and if so, finish the camera op 1978 if (mOpsActive) { 1979 // Notify app ops that the camera is available again 1980 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 1981 mClientPackageName); 1982 mOpsActive = false; 1983 1984 auto rejected = {ICameraServiceListener::STATUS_NOT_PRESENT, 1985 ICameraServiceListener::STATUS_ENUMERATING}; 1986 1987 // Transition to PRESENT if the camera is not in either of the rejected states 1988 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, 1989 String8::format("%d", mCameraId), rejected); 1990 1991 // Transition device state to CLOSED 1992 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_CLOSED, 1993 String8::format("%d", mCameraId)); 1994 1995 // Notify flashlight that a camera device is closed. 1996 mCameraService->mFlashlight->deviceClosed( 1997 String8::format("%d", mCameraId)); 1998 } 1999 // Always stop watching, even if no camera op is active 2000 if (mOpsCallback != NULL) { 2001 mAppOpsManager.stopWatchingMode(mOpsCallback); 2002 } 2003 mOpsCallback.clear(); 2004 2005 return OK; 2006} 2007 2008void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 2009 String8 name(packageName); 2010 String8 myName(mClientPackageName); 2011 2012 if (op != AppOpsManager::OP_CAMERA) { 2013 ALOGW("Unexpected app ops notification received: %d", op); 2014 return; 2015 } 2016 2017 int32_t res; 2018 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 2019 mClientUid, mClientPackageName); 2020 ALOGV("checkOp returns: %d, %s ", res, 2021 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 2022 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 2023 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 2024 "UNKNOWN"); 2025 2026 if (res != AppOpsManager::MODE_ALLOWED) { 2027 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 2028 myName.string()); 2029 // Reset the client PID to allow server-initiated disconnect, 2030 // and to prevent further calls by client. 2031 mClientPid = getCallingPid(); 2032 CaptureResultExtras resultExtras; // a dummy result (invalid) 2033 notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE, resultExtras); 2034 disconnect(); 2035 } 2036} 2037 2038// ---------------------------------------------------------------------------- 2039 2040// Provide client strong pointer for callbacks. 2041sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) { 2042 String8 cameraId = String8::format("%d", (int)(intptr_t) user); 2043 auto clientDescriptor = gCameraService->mActiveClientManager.get(cameraId); 2044 if (clientDescriptor != nullptr) { 2045 return sp<Client>{ 2046 static_cast<Client*>(clientDescriptor->getValue().get())}; 2047 } 2048 return sp<Client>{nullptr}; 2049} 2050 2051void CameraService::Client::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 2052 const CaptureResultExtras& resultExtras) { 2053 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 2054} 2055 2056// NOTE: function is idempotent 2057void CameraService::Client::disconnect() { 2058 ALOGV("Client::disconnect"); 2059 BasicClient::disconnect(); 2060} 2061 2062bool CameraService::Client::canCastToApiClient(apiLevel level) const { 2063 return level == API_1; 2064} 2065 2066CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 2067 mClient(client) { 2068} 2069 2070void CameraService::Client::OpsCallback::opChanged(int32_t op, 2071 const String16& packageName) { 2072 sp<BasicClient> client = mClient.promote(); 2073 if (client != NULL) { 2074 client->opChanged(op, packageName); 2075 } 2076} 2077 2078// ---------------------------------------------------------------------------- 2079// CameraState 2080// ---------------------------------------------------------------------------- 2081 2082CameraService::CameraState::CameraState(const String8& id, int cost, 2083 const std::set<String8>& conflicting) : mId(id), 2084 mStatus(ICameraServiceListener::STATUS_PRESENT), mCost(cost), mConflicting(conflicting) {} 2085 2086CameraService::CameraState::~CameraState() {} 2087 2088ICameraServiceListener::Status CameraService::CameraState::getStatus() const { 2089 Mutex::Autolock lock(mStatusLock); 2090 return mStatus; 2091} 2092 2093CameraParameters CameraService::CameraState::getShimParams() const { 2094 return mShimParams; 2095} 2096 2097void CameraService::CameraState::setShimParams(const CameraParameters& params) { 2098 mShimParams = params; 2099} 2100 2101int CameraService::CameraState::getCost() const { 2102 return mCost; 2103} 2104 2105std::set<String8> CameraService::CameraState::getConflicting() const { 2106 return mConflicting; 2107} 2108 2109String8 CameraService::CameraState::getId() const { 2110 return mId; 2111} 2112 2113// ---------------------------------------------------------------------------- 2114// ClientEventListener 2115// ---------------------------------------------------------------------------- 2116 2117void CameraService::ClientEventListener::onClientAdded( 2118 const resource_policy::ClientDescriptor<String8, 2119 sp<CameraService::BasicClient>>& descriptor) { 2120 auto basicClient = descriptor.getValue(); 2121 if (basicClient.get() != nullptr) { 2122 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2123 notifier.noteStartCamera(descriptor.getKey(), 2124 static_cast<int>(basicClient->getClientUid())); 2125 } 2126} 2127 2128void CameraService::ClientEventListener::onClientRemoved( 2129 const resource_policy::ClientDescriptor<String8, 2130 sp<CameraService::BasicClient>>& descriptor) { 2131 auto basicClient = descriptor.getValue(); 2132 if (basicClient.get() != nullptr) { 2133 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2134 notifier.noteStopCamera(descriptor.getKey(), 2135 static_cast<int>(basicClient->getClientUid())); 2136 } 2137} 2138 2139 2140// ---------------------------------------------------------------------------- 2141// CameraClientManager 2142// ---------------------------------------------------------------------------- 2143 2144CameraService::CameraClientManager::CameraClientManager() { 2145 setListener(std::make_shared<ClientEventListener>()); 2146} 2147 2148CameraService::CameraClientManager::~CameraClientManager() {} 2149 2150sp<CameraService::BasicClient> CameraService::CameraClientManager::getCameraClient( 2151 const String8& id) const { 2152 auto descriptor = get(id); 2153 if (descriptor == nullptr) { 2154 return sp<BasicClient>{nullptr}; 2155 } 2156 return descriptor->getValue(); 2157} 2158 2159String8 CameraService::CameraClientManager::toString() const { 2160 auto all = getAll(); 2161 String8 ret("["); 2162 bool hasAny = false; 2163 for (auto& i : all) { 2164 hasAny = true; 2165 String8 key = i->getKey(); 2166 int32_t cost = i->getCost(); 2167 int32_t pid = i->getOwnerId(); 2168 int32_t priority = i->getPriority(); 2169 auto conflicting = i->getConflicting(); 2170 auto clientSp = i->getValue(); 2171 String8 packageName; 2172 userid_t clientUserId = 0; 2173 if (clientSp.get() != nullptr) { 2174 packageName = String8{clientSp->getPackageName()}; 2175 uid_t clientUid = clientSp->getClientUid(); 2176 clientUserId = multiuser_get_user_id(clientUid); 2177 } 2178 ret.appendFormat("\n(Camera ID: %s, Cost: %" PRId32 ", PID: %" PRId32 ", Priority: %" 2179 PRId32 ", ", key.string(), cost, pid, priority); 2180 2181 if (clientSp.get() != nullptr) { 2182 ret.appendFormat("User Id: %d, ", clientUserId); 2183 } 2184 if (packageName.size() != 0) { 2185 ret.appendFormat("Client Package Name: %s", packageName.string()); 2186 } 2187 2188 ret.append(", Conflicting Client Devices: {"); 2189 for (auto& j : conflicting) { 2190 ret.appendFormat("%s, ", j.string()); 2191 } 2192 ret.append("})"); 2193 } 2194 if (hasAny) ret.append("\n"); 2195 ret.append("]\n"); 2196 return ret; 2197} 2198 2199CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2200 const String8& key, const sp<BasicClient>& value, int32_t cost, 2201 const std::set<String8>& conflictingKeys, int32_t priority, int32_t ownerId) { 2202 2203 return std::make_shared<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>( 2204 key, value, cost, conflictingKeys, priority, ownerId); 2205} 2206 2207CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2208 const sp<BasicClient>& value, const CameraService::DescriptorPtr& partial) { 2209 return makeClientDescriptor(partial->getKey(), value, partial->getCost(), 2210 partial->getConflicting(), partial->getPriority(), partial->getOwnerId()); 2211} 2212 2213// ---------------------------------------------------------------------------- 2214 2215static const int kDumpLockRetries = 50; 2216static const int kDumpLockSleep = 60000; 2217 2218static bool tryLock(Mutex& mutex) 2219{ 2220 bool locked = false; 2221 for (int i = 0; i < kDumpLockRetries; ++i) { 2222 if (mutex.tryLock() == NO_ERROR) { 2223 locked = true; 2224 break; 2225 } 2226 usleep(kDumpLockSleep); 2227 } 2228 return locked; 2229} 2230 2231status_t CameraService::dump(int fd, const Vector<String16>& args) { 2232 String8 result("Dump of the Camera Service:\n"); 2233 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 2234 result.appendFormat("Permission Denial: " 2235 "can't dump CameraService from pid=%d, uid=%d\n", 2236 getCallingPid(), 2237 getCallingUid()); 2238 write(fd, result.string(), result.size()); 2239 } else { 2240 bool locked = tryLock(mServiceLock); 2241 // failed to lock - CameraService is probably deadlocked 2242 if (!locked) { 2243 result.append("CameraService may be deadlocked\n"); 2244 write(fd, result.string(), result.size()); 2245 } 2246 2247 bool hasClient = false; 2248 if (!mModule) { 2249 result = String8::format("No camera module available!\n"); 2250 write(fd, result.string(), result.size()); 2251 2252 // Dump event log for error information 2253 dumpEventLog(fd); 2254 2255 if (locked) mServiceLock.unlock(); 2256 return NO_ERROR; 2257 } 2258 2259 result = String8::format("Camera module HAL API version: 0x%x\n", mModule->getHalApiVersion()); 2260 result.appendFormat("Camera module API version: 0x%x\n", mModule->getModuleApiVersion()); 2261 result.appendFormat("Camera module name: %s\n", mModule->getModuleName()); 2262 result.appendFormat("Camera module author: %s\n", mModule->getModuleAuthor()); 2263 result.appendFormat("Number of camera devices: %d\n", mNumberOfCameras); 2264 String8 activeClientString = mActiveClientManager.toString(); 2265 result.appendFormat("Active Camera Clients:\n%s", activeClientString.string()); 2266 result.appendFormat("Allowed users:\n%s\n", toString(mAllowedUsers).string()); 2267 2268 sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 2269 if (desc == NULL) { 2270 result.appendFormat("Vendor tags left unimplemented.\n"); 2271 } else { 2272 result.appendFormat("Vendor tag definitions:\n"); 2273 } 2274 2275 write(fd, result.string(), result.size()); 2276 2277 if (desc != NULL) { 2278 desc->dump(fd, /*verbosity*/2, /*indentation*/4); 2279 } 2280 2281 dumpEventLog(fd); 2282 2283 bool stateLocked = tryLock(mCameraStatesLock); 2284 if (!stateLocked) { 2285 result = String8::format("CameraStates in use, may be deadlocked\n"); 2286 write(fd, result.string(), result.size()); 2287 } 2288 2289 for (auto& state : mCameraStates) { 2290 String8 cameraId = state.first; 2291 result = String8::format("Camera %s information:\n", cameraId.string()); 2292 camera_info info; 2293 2294 // TODO: Change getCameraInfo + HAL to use String cameraIds 2295 status_t rc = mModule->getCameraInfo(cameraIdToInt(cameraId), &info); 2296 if (rc != OK) { 2297 result.appendFormat(" Error reading static information!\n"); 2298 write(fd, result.string(), result.size()); 2299 } else { 2300 result.appendFormat(" Facing: %s\n", 2301 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 2302 result.appendFormat(" Orientation: %d\n", info.orientation); 2303 int deviceVersion; 2304 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0) { 2305 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 2306 } else { 2307 deviceVersion = info.device_version; 2308 } 2309 2310 auto conflicting = state.second->getConflicting(); 2311 result.appendFormat(" Resource Cost: %d\n", state.second->getCost()); 2312 result.appendFormat(" Conflicting Devices:"); 2313 for (auto& id : conflicting) { 2314 result.appendFormat(" %s", cameraId.string()); 2315 } 2316 if (conflicting.size() == 0) { 2317 result.appendFormat(" NONE"); 2318 } 2319 result.appendFormat("\n"); 2320 2321 result.appendFormat(" Device version: %#x\n", deviceVersion); 2322 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { 2323 result.appendFormat(" Device static metadata:\n"); 2324 write(fd, result.string(), result.size()); 2325 dump_indented_camera_metadata(info.static_camera_characteristics, 2326 fd, /*verbosity*/2, /*indentation*/4); 2327 } else { 2328 write(fd, result.string(), result.size()); 2329 } 2330 2331 CameraParameters p = state.second->getShimParams(); 2332 if (!p.isEmpty()) { 2333 result = String8::format(" Camera1 API shim is using parameters:\n "); 2334 write(fd, result.string(), result.size()); 2335 p.dump(fd, args); 2336 } 2337 } 2338 2339 auto clientDescriptor = mActiveClientManager.get(cameraId); 2340 if (clientDescriptor == nullptr) { 2341 result = String8::format(" Device %s is closed, no client instance\n", 2342 cameraId.string()); 2343 write(fd, result.string(), result.size()); 2344 continue; 2345 } 2346 hasClient = true; 2347 result = String8::format(" Device %s is open. Client instance dump:\n\n", 2348 cameraId.string()); 2349 result.appendFormat("Client priority level: %d\n", clientDescriptor->getPriority()); 2350 result.appendFormat("Client PID: %d\n", clientDescriptor->getOwnerId()); 2351 2352 auto client = clientDescriptor->getValue(); 2353 result.appendFormat("Client package: %s\n", 2354 String8(client->getPackageName()).string()); 2355 write(fd, result.string(), result.size()); 2356 2357 client->dump(fd, args); 2358 } 2359 2360 if (stateLocked) mCameraStatesLock.unlock(); 2361 2362 if (!hasClient) { 2363 result = String8::format("\nNo active camera clients yet.\n"); 2364 write(fd, result.string(), result.size()); 2365 } 2366 2367 if (locked) mServiceLock.unlock(); 2368 2369 // Dump camera traces if there were any 2370 write(fd, "\n", 1); 2371 camera3::CameraTraces::dump(fd, args); 2372 2373 // change logging level 2374 int n = args.size(); 2375 for (int i = 0; i + 1 < n; i++) { 2376 String16 verboseOption("-v"); 2377 if (args[i] == verboseOption) { 2378 String8 levelStr(args[i+1]); 2379 int level = atoi(levelStr.string()); 2380 result = String8::format("\nSetting log level to %d.\n", level); 2381 setLogLevel(level); 2382 write(fd, result.string(), result.size()); 2383 } 2384 } 2385 } 2386 return NO_ERROR; 2387} 2388 2389void CameraService::dumpEventLog(int fd) { 2390 String8 result = String8("\nPrior client events (most recent at top):\n"); 2391 2392 Mutex::Autolock l(mLogLock); 2393 for (const auto& msg : mEventLog) { 2394 result.appendFormat(" %s\n", msg.string()); 2395 } 2396 2397 if (mEventLog.size() == DEFAULT_EVENT_LOG_LENGTH) { 2398 result.append(" ...\n"); 2399 } else if (mEventLog.size() == 0) { 2400 result.append(" [no events yet]\n"); 2401 } 2402 result.append("\n"); 2403 2404 write(fd, result.string(), result.size()); 2405} 2406 2407void CameraService::handleTorchClientBinderDied(const wp<IBinder> &who) { 2408 Mutex::Autolock al(mTorchClientMapMutex); 2409 for (size_t i = 0; i < mTorchClientMap.size(); i++) { 2410 if (mTorchClientMap[i] == who) { 2411 // turn off the torch mode that was turned on by dead client 2412 String8 cameraId = mTorchClientMap.keyAt(i); 2413 status_t res = mFlashlight->setTorchMode(cameraId, false); 2414 if (res) { 2415 ALOGE("%s: torch client died but couldn't turn off torch: " 2416 "%s (%d)", __FUNCTION__, strerror(-res), res); 2417 return; 2418 } 2419 mTorchClientMap.removeItemsAt(i); 2420 break; 2421 } 2422 } 2423} 2424 2425/*virtual*/void CameraService::binderDied(const wp<IBinder> &who) { 2426 2427 /** 2428 * While tempting to promote the wp<IBinder> into a sp, it's actually not supported by the 2429 * binder driver 2430 */ 2431 2432 logClientDied(getCallingPid(), String8("Binder died unexpectedly")); 2433 2434 // check torch client 2435 handleTorchClientBinderDied(who); 2436 2437 // check camera device client 2438 if(!evictClientIdByRemote(who)) { 2439 ALOGV("%s: Java client's binder death already cleaned up (normal case)", __FUNCTION__); 2440 return; 2441 } 2442 2443 ALOGE("%s: Java client's binder died, removing it from the list of active clients", 2444 __FUNCTION__); 2445} 2446 2447void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId) { 2448 updateStatus(status, cameraId, {}); 2449} 2450 2451void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId, 2452 std::initializer_list<ICameraServiceListener::Status> rejectSourceStates) { 2453 // Do not lock mServiceLock here or can get into a deadlock from 2454 // connect() -> disconnect -> updateStatus 2455 2456 auto state = getCameraState(cameraId); 2457 2458 if (state == nullptr) { 2459 ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__, 2460 cameraId.string()); 2461 return; 2462 } 2463 2464 // Update the status for this camera state, then send the onStatusChangedCallbacks to each 2465 // of the listeners with both the mStatusStatus and mStatusListenerLock held 2466 state->updateStatus(status, cameraId, rejectSourceStates, [this] 2467 (const String8& cameraId, ICameraServiceListener::Status status) { 2468 2469 if (status != ICameraServiceListener::STATUS_ENUMERATING) { 2470 // Update torch status if it has a flash unit. 2471 Mutex::Autolock al(mTorchStatusMutex); 2472 ICameraServiceListener::TorchStatus torchStatus; 2473 if (getTorchStatusLocked(cameraId, &torchStatus) != 2474 NAME_NOT_FOUND) { 2475 ICameraServiceListener::TorchStatus newTorchStatus = 2476 status == ICameraServiceListener::STATUS_PRESENT ? 2477 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF : 2478 ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 2479 if (torchStatus != newTorchStatus) { 2480 onTorchStatusChangedLocked(cameraId, newTorchStatus); 2481 } 2482 } 2483 } 2484 2485 Mutex::Autolock lock(mStatusListenerLock); 2486 2487 for (auto& listener : mListenerList) { 2488 // TODO: Refactor status listeners to use strings for Camera IDs and remove this. 2489 int id = cameraIdToInt(cameraId); 2490 if (id != -1) listener->onStatusChanged(status, id); 2491 } 2492 }); 2493} 2494 2495void CameraService::updateProxyDeviceState(ICameraServiceProxy::CameraState newState, 2496 const String8& cameraId) { 2497 sp<ICameraServiceProxy> proxyBinder = getCameraServiceProxy(); 2498 if (proxyBinder == nullptr) return; 2499 String16 id(cameraId); 2500 proxyBinder->notifyCameraState(id, newState); 2501} 2502 2503status_t CameraService::getTorchStatusLocked( 2504 const String8& cameraId, 2505 ICameraServiceListener::TorchStatus *status) const { 2506 if (!status) { 2507 return BAD_VALUE; 2508 } 2509 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2510 if (index == NAME_NOT_FOUND) { 2511 // invalid camera ID or the camera doesn't have a flash unit 2512 return NAME_NOT_FOUND; 2513 } 2514 2515 *status = mTorchStatusMap.valueAt(index); 2516 return OK; 2517} 2518 2519status_t CameraService::setTorchStatusLocked(const String8& cameraId, 2520 ICameraServiceListener::TorchStatus status) { 2521 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2522 if (index == NAME_NOT_FOUND) { 2523 return BAD_VALUE; 2524 } 2525 ICameraServiceListener::TorchStatus& item = 2526 mTorchStatusMap.editValueAt(index); 2527 item = status; 2528 2529 return OK; 2530} 2531 2532}; // namespace android 2533