CameraService.cpp revision fefa614f92346e929921bfd47e3643861850bc2a
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 mFlashlight = new CameraFlashlight(*mModule, *this); 177 status_t res = mFlashlight->findFlashUnits(); 178 if (res) { 179 // impossible because we haven't open any camera devices. 180 ALOGE("Failed to find flash units."); 181 } 182 183 int latestStrangeCameraId = INT_MAX; 184 for (int i = 0; i < mNumberOfCameras; i++) { 185 String8 cameraId = String8::format("%d", i); 186 187 // Get camera info 188 189 struct camera_info info; 190 bool haveInfo = true; 191 status_t rc = mModule->getCameraInfo(i, &info); 192 if (rc != NO_ERROR) { 193 ALOGE("%s: Received error loading camera info for device %d, cost and" 194 " conflicting devices fields set to defaults for this device.", 195 __FUNCTION__, i); 196 haveInfo = false; 197 } 198 199 // Check for backwards-compatibility support 200 if (haveInfo) { 201 if (checkCameraCapabilities(i, info, &latestStrangeCameraId) != OK) { 202 delete mModule; 203 mModule = nullptr; 204 return; 205 } 206 } 207 208 // Defaults to use for cost and conflicting devices 209 int cost = 100; 210 char** conflicting_devices = nullptr; 211 size_t conflicting_devices_length = 0; 212 213 // If using post-2.4 module version, query the cost + conflicting devices from the HAL 214 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_4 && haveInfo) { 215 cost = info.resource_cost; 216 conflicting_devices = info.conflicting_devices; 217 conflicting_devices_length = info.conflicting_devices_length; 218 } 219 220 std::set<String8> conflicting; 221 for (size_t i = 0; i < conflicting_devices_length; i++) { 222 conflicting.emplace(String8(conflicting_devices[i])); 223 } 224 225 // Initialize state for each camera device 226 { 227 Mutex::Autolock lock(mCameraStatesLock); 228 mCameraStates.emplace(cameraId, std::make_shared<CameraState>(cameraId, cost, 229 conflicting)); 230 } 231 232 if (mFlashlight->hasFlashUnit(cameraId)) { 233 mTorchStatusMap.add(cameraId, 234 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF); 235 } 236 } 237 238 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_1) { 239 mModule->setCallbacks(this); 240 } 241 242 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 243 244 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_2) { 245 setUpVendorTags(); 246 } 247 248 CameraDeviceFactory::registerService(this); 249 250 CameraService::pingCameraServiceProxy(); 251} 252 253sp<ICameraServiceProxy> CameraService::getCameraServiceProxy() { 254 sp<IServiceManager> sm = defaultServiceManager(); 255 sp<IBinder> binder = sm->getService(String16("media.camera.proxy")); 256 if (binder == nullptr) { 257 return nullptr; 258 } 259 sp<ICameraServiceProxy> proxyBinder = interface_cast<ICameraServiceProxy>(binder); 260 return proxyBinder; 261} 262 263void CameraService::pingCameraServiceProxy() { 264 sp<ICameraServiceProxy> proxyBinder = getCameraServiceProxy(); 265 if (proxyBinder == nullptr) return; 266 proxyBinder->pingForUserUpdate(); 267} 268 269CameraService::~CameraService() { 270 if (mModule) { 271 delete mModule; 272 mModule = nullptr; 273 } 274 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 275 gCameraService = nullptr; 276} 277 278void CameraService::onDeviceStatusChanged(camera_device_status_t cameraId, 279 camera_device_status_t newStatus) { 280 ALOGI("%s: Status changed for cameraId=%d, newStatus=%d", __FUNCTION__, 281 cameraId, newStatus); 282 283 String8 id = String8::format("%d", cameraId); 284 std::shared_ptr<CameraState> state = getCameraState(id); 285 286 if (state == nullptr) { 287 ALOGE("%s: Bad camera ID %d", __FUNCTION__, cameraId); 288 return; 289 } 290 291 ICameraServiceListener::Status oldStatus = state->getStatus(); 292 293 if (oldStatus == static_cast<ICameraServiceListener::Status>(newStatus)) { 294 ALOGE("%s: State transition to the same status %#x not allowed", __FUNCTION__, newStatus); 295 return; 296 } 297 298 if (newStatus == CAMERA_DEVICE_STATUS_NOT_PRESENT) { 299 logDeviceRemoved(id, String8::format("Device status changed from %d to %d", oldStatus, 300 newStatus)); 301 sp<BasicClient> clientToDisconnect; 302 { 303 // Don't do this in updateStatus to avoid deadlock over mServiceLock 304 Mutex::Autolock lock(mServiceLock); 305 306 // Set the device status to NOT_PRESENT, clients will no longer be able to connect 307 // to this device until the status changes 308 updateStatus(ICameraServiceListener::STATUS_NOT_PRESENT, id); 309 310 // Remove cached shim parameters 311 state->setShimParams(CameraParameters()); 312 313 // Remove the client from the list of active clients 314 clientToDisconnect = removeClientLocked(id); 315 316 // Notify the client of disconnection 317 clientToDisconnect->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 318 CaptureResultExtras{}); 319 } 320 321 ALOGI("%s: Client for camera ID %s evicted due to device status change from HAL", 322 __FUNCTION__, id.string()); 323 324 // Disconnect client 325 if (clientToDisconnect.get() != nullptr) { 326 // Ensure not in binder RPC so client disconnect PID checks work correctly 327 LOG_ALWAYS_FATAL_IF(getCallingPid() != getpid(), 328 "onDeviceStatusChanged must be called from the camera service process!"); 329 clientToDisconnect->disconnect(); 330 } 331 332 } else { 333 if (oldStatus == ICameraServiceListener::Status::STATUS_NOT_PRESENT) { 334 logDeviceAdded(id, String8::format("Device status changed from %d to %d", oldStatus, 335 newStatus)); 336 } 337 updateStatus(static_cast<ICameraServiceListener::Status>(newStatus), id); 338 } 339 340} 341 342void CameraService::onTorchStatusChanged(const String8& cameraId, 343 ICameraServiceListener::TorchStatus newStatus) { 344 Mutex::Autolock al(mTorchStatusMutex); 345 onTorchStatusChangedLocked(cameraId, newStatus); 346} 347 348void CameraService::onTorchStatusChangedLocked(const String8& cameraId, 349 ICameraServiceListener::TorchStatus newStatus) { 350 ALOGI("%s: Torch status changed for cameraId=%s, newStatus=%d", 351 __FUNCTION__, cameraId.string(), newStatus); 352 353 ICameraServiceListener::TorchStatus status; 354 status_t res = getTorchStatusLocked(cameraId, &status); 355 if (res) { 356 ALOGE("%s: cannot get torch status of camera %s: %s (%d)", 357 __FUNCTION__, cameraId.string(), strerror(-res), res); 358 return; 359 } 360 if (status == newStatus) { 361 return; 362 } 363 364 res = setTorchStatusLocked(cameraId, newStatus); 365 if (res) { 366 ALOGE("%s: Failed to set the torch status", __FUNCTION__, (uint32_t)newStatus); 367 return; 368 } 369 370 { 371 // Update battery life logging for flashlight 372 Mutex::Autolock al(mTorchUidMapMutex); 373 auto iter = mTorchUidMap.find(cameraId); 374 if (iter != mTorchUidMap.end()) { 375 int oldUid = iter->second.second; 376 int newUid = iter->second.first; 377 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 378 if (oldUid != newUid) { 379 // If the UID has changed, log the status and update current UID in mTorchUidMap 380 if (status == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 381 notifier.noteFlashlightOff(cameraId, oldUid); 382 } 383 if (newStatus == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 384 notifier.noteFlashlightOn(cameraId, newUid); 385 } 386 iter->second.second = newUid; 387 } else { 388 // If the UID has not changed, log the status 389 if (newStatus == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 390 notifier.noteFlashlightOn(cameraId, oldUid); 391 } else { 392 notifier.noteFlashlightOff(cameraId, oldUid); 393 } 394 } 395 } 396 } 397 398 { 399 Mutex::Autolock lock(mStatusListenerLock); 400 for (auto& i : mListenerList) { 401 i->onTorchStatusChanged(newStatus, String16{cameraId}); 402 } 403 } 404} 405 406int32_t CameraService::getNumberOfCameras() { 407 ATRACE_CALL(); 408 return getNumberOfCameras(CAMERA_TYPE_BACKWARD_COMPATIBLE); 409} 410 411int32_t CameraService::getNumberOfCameras(int type) { 412 ATRACE_CALL(); 413 switch (type) { 414 case CAMERA_TYPE_BACKWARD_COMPATIBLE: 415 return mNumberOfNormalCameras; 416 case CAMERA_TYPE_ALL: 417 return mNumberOfCameras; 418 default: 419 ALOGW("%s: Unknown camera type %d, returning 0", 420 __FUNCTION__, type); 421 return 0; 422 } 423} 424 425status_t CameraService::getCameraInfo(int cameraId, 426 struct CameraInfo* cameraInfo) { 427 ATRACE_CALL(); 428 if (!mModule) { 429 return -ENODEV; 430 } 431 432 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 433 return BAD_VALUE; 434 } 435 436 struct camera_info info; 437 status_t rc = filterGetInfoErrorCode( 438 mModule->getCameraInfo(cameraId, &info)); 439 cameraInfo->facing = info.facing; 440 cameraInfo->orientation = info.orientation; 441 return rc; 442} 443 444int CameraService::cameraIdToInt(const String8& cameraId) { 445 errno = 0; 446 size_t pos = 0; 447 int ret = stoi(std::string{cameraId.string()}, &pos); 448 if (errno != 0 || pos != cameraId.size()) { 449 return -1; 450 } 451 return ret; 452} 453 454status_t CameraService::generateShimMetadata(int cameraId, /*out*/CameraMetadata* cameraInfo) { 455 ATRACE_CALL(); 456 status_t ret = OK; 457 struct CameraInfo info; 458 if ((ret = getCameraInfo(cameraId, &info)) != OK) { 459 return ret; 460 } 461 462 CameraMetadata shimInfo; 463 int32_t orientation = static_cast<int32_t>(info.orientation); 464 if ((ret = shimInfo.update(ANDROID_SENSOR_ORIENTATION, &orientation, 1)) != OK) { 465 return ret; 466 } 467 468 uint8_t facing = (info.facing == CAMERA_FACING_FRONT) ? 469 ANDROID_LENS_FACING_FRONT : ANDROID_LENS_FACING_BACK; 470 if ((ret = shimInfo.update(ANDROID_LENS_FACING, &facing, 1)) != OK) { 471 return ret; 472 } 473 474 CameraParameters shimParams; 475 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 476 // Error logged by callee 477 return ret; 478 } 479 480 Vector<Size> sizes; 481 Vector<Size> jpegSizes; 482 Vector<int32_t> formats; 483 const char* supportedPreviewFormats; 484 { 485 shimParams.getSupportedPreviewSizes(/*out*/sizes); 486 shimParams.getSupportedPreviewFormats(/*out*/formats); 487 shimParams.getSupportedPictureSizes(/*out*/jpegSizes); 488 } 489 490 // Always include IMPLEMENTATION_DEFINED 491 formats.add(HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED); 492 493 const size_t INTS_PER_CONFIG = 4; 494 495 // Build available stream configurations metadata 496 size_t streamConfigSize = (sizes.size() * formats.size() + jpegSizes.size()) * INTS_PER_CONFIG; 497 498 Vector<int32_t> streamConfigs; 499 streamConfigs.setCapacity(streamConfigSize); 500 501 for (size_t i = 0; i < formats.size(); ++i) { 502 for (size_t j = 0; j < sizes.size(); ++j) { 503 streamConfigs.add(formats[i]); 504 streamConfigs.add(sizes[j].width); 505 streamConfigs.add(sizes[j].height); 506 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 507 } 508 } 509 510 for (size_t i = 0; i < jpegSizes.size(); ++i) { 511 streamConfigs.add(HAL_PIXEL_FORMAT_BLOB); 512 streamConfigs.add(jpegSizes[i].width); 513 streamConfigs.add(jpegSizes[i].height); 514 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 515 } 516 517 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS, 518 streamConfigs.array(), streamConfigSize)) != OK) { 519 return ret; 520 } 521 522 int64_t fakeMinFrames[0]; 523 // TODO: Fixme, don't fake min frame durations. 524 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS, 525 fakeMinFrames, 0)) != OK) { 526 return ret; 527 } 528 529 int64_t fakeStalls[0]; 530 // TODO: Fixme, don't fake stall durations. 531 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STALL_DURATIONS, 532 fakeStalls, 0)) != OK) { 533 return ret; 534 } 535 536 *cameraInfo = shimInfo; 537 return OK; 538} 539 540status_t CameraService::getCameraCharacteristics(int cameraId, 541 CameraMetadata* cameraInfo) { 542 ATRACE_CALL(); 543 if (!cameraInfo) { 544 ALOGE("%s: cameraInfo is NULL", __FUNCTION__); 545 return BAD_VALUE; 546 } 547 548 if (!mModule) { 549 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 550 return -ENODEV; 551 } 552 553 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 554 ALOGE("%s: Invalid camera id: %d", __FUNCTION__, cameraId); 555 return BAD_VALUE; 556 } 557 558 int facing; 559 status_t ret = OK; 560 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0 || 561 getDeviceVersion(cameraId, &facing) <= CAMERA_DEVICE_API_VERSION_2_1 ) { 562 /** 563 * Backwards compatibility mode for old HALs: 564 * - Convert CameraInfo into static CameraMetadata properties. 565 * - Retrieve cached CameraParameters for this camera. If none exist, 566 * attempt to open CameraClient and retrieve the CameraParameters. 567 * - Convert cached CameraParameters into static CameraMetadata 568 * properties. 569 */ 570 ALOGI("%s: Switching to HAL1 shim implementation...", __FUNCTION__); 571 572 if ((ret = generateShimMetadata(cameraId, cameraInfo)) != OK) { 573 return ret; 574 } 575 576 } else { 577 /** 578 * Normal HAL 2.1+ codepath. 579 */ 580 struct camera_info info; 581 ret = filterGetInfoErrorCode(mModule->getCameraInfo(cameraId, &info)); 582 *cameraInfo = info.static_camera_characteristics; 583 } 584 585 return ret; 586} 587 588int CameraService::getCallingPid() { 589 return IPCThreadState::self()->getCallingPid(); 590} 591 592int CameraService::getCallingUid() { 593 return IPCThreadState::self()->getCallingUid(); 594} 595 596String8 CameraService::getFormattedCurrentTime() { 597 time_t now = time(nullptr); 598 char formattedTime[64]; 599 strftime(formattedTime, sizeof(formattedTime), "%m-%d %H:%M:%S", localtime(&now)); 600 return String8(formattedTime); 601} 602 603int CameraService::getCameraPriorityFromProcState(int procState) { 604 // Find the priority for the camera usage based on the process state. Higher priority clients 605 // win for evictions. 606 if (procState < 0) { 607 ALOGE("%s: Received invalid process state %d from ActivityManagerService!", __FUNCTION__, 608 procState); 609 return -1; 610 } 611 // Treat sleeping TOP processes the same as regular TOP processes, for 612 // access priority. This is important for lock-screen camera launch scenarios 613 if (procState == PROCESS_STATE_TOP_SLEEPING) { 614 procState = PROCESS_STATE_TOP; 615 } 616 return INT_MAX - procState; 617} 618 619status_t CameraService::getCameraVendorTagDescriptor(/*out*/sp<VendorTagDescriptor>& desc) { 620 ATRACE_CALL(); 621 if (!mModule) { 622 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 623 return -ENODEV; 624 } 625 626 desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 627 return OK; 628} 629 630int CameraService::getDeviceVersion(int cameraId, int* facing) { 631 ATRACE_CALL(); 632 struct camera_info info; 633 if (mModule->getCameraInfo(cameraId, &info) != OK) { 634 return -1; 635 } 636 637 int deviceVersion; 638 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) { 639 deviceVersion = info.device_version; 640 } else { 641 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 642 } 643 644 if (facing) { 645 *facing = info.facing; 646 } 647 648 return deviceVersion; 649} 650 651status_t CameraService::filterGetInfoErrorCode(status_t err) { 652 switch(err) { 653 case NO_ERROR: 654 case -EINVAL: 655 return err; 656 default: 657 break; 658 } 659 return -ENODEV; 660} 661 662bool CameraService::setUpVendorTags() { 663 ATRACE_CALL(); 664 vendor_tag_ops_t vOps = vendor_tag_ops_t(); 665 666 // Check if vendor operations have been implemented 667 if (!mModule->isVendorTagDefined()) { 668 ALOGI("%s: No vendor tags defined for this device.", __FUNCTION__); 669 return false; 670 } 671 672 mModule->getVendorTagOps(&vOps); 673 674 // Ensure all vendor operations are present 675 if (vOps.get_tag_count == NULL || vOps.get_all_tags == NULL || 676 vOps.get_section_name == NULL || vOps.get_tag_name == NULL || 677 vOps.get_tag_type == NULL) { 678 ALOGE("%s: Vendor tag operations not fully defined. Ignoring definitions." 679 , __FUNCTION__); 680 return false; 681 } 682 683 // Read all vendor tag definitions into a descriptor 684 sp<VendorTagDescriptor> desc; 685 status_t res; 686 if ((res = VendorTagDescriptor::createDescriptorFromOps(&vOps, /*out*/desc)) 687 != OK) { 688 ALOGE("%s: Could not generate descriptor from vendor tag operations," 689 "received error %s (%d). Camera clients will not be able to use" 690 "vendor tags", __FUNCTION__, strerror(res), res); 691 return false; 692 } 693 694 // Set the global descriptor to use with camera metadata 695 VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc); 696 return true; 697} 698 699status_t CameraService::makeClient(const sp<CameraService>& cameraService, 700 const sp<IInterface>& cameraCb, const String16& packageName, const String8& cameraId, 701 int facing, int clientPid, uid_t clientUid, int servicePid, bool legacyMode, 702 int halVersion, int deviceVersion, apiLevel effectiveApiLevel, 703 /*out*/sp<BasicClient>* client) { 704 705 // TODO: Update CameraClients + HAL interface to use strings for Camera IDs 706 int id = cameraIdToInt(cameraId); 707 if (id == -1) { 708 ALOGE("%s: Invalid camera ID %s, cannot convert to integer.", __FUNCTION__, 709 cameraId.string()); 710 return BAD_VALUE; 711 } 712 713 if (halVersion < 0 || halVersion == deviceVersion) { 714 // Default path: HAL version is unspecified by caller, create CameraClient 715 // based on device version reported by the HAL. 716 switch(deviceVersion) { 717 case CAMERA_DEVICE_API_VERSION_1_0: 718 if (effectiveApiLevel == API_1) { // Camera1 API route 719 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 720 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 721 clientPid, clientUid, getpid(), legacyMode); 722 } else { // Camera2 API route 723 ALOGW("Camera using old HAL version: %d", deviceVersion); 724 return -EOPNOTSUPP; 725 } 726 break; 727 case CAMERA_DEVICE_API_VERSION_2_0: 728 case CAMERA_DEVICE_API_VERSION_2_1: 729 case CAMERA_DEVICE_API_VERSION_3_0: 730 case CAMERA_DEVICE_API_VERSION_3_1: 731 case CAMERA_DEVICE_API_VERSION_3_2: 732 case CAMERA_DEVICE_API_VERSION_3_3: 733 if (effectiveApiLevel == API_1) { // Camera1 API route 734 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 735 *client = new Camera2Client(cameraService, tmp, packageName, id, facing, 736 clientPid, clientUid, servicePid, legacyMode); 737 } else { // Camera2 API route 738 sp<ICameraDeviceCallbacks> tmp = 739 static_cast<ICameraDeviceCallbacks*>(cameraCb.get()); 740 *client = new CameraDeviceClient(cameraService, tmp, packageName, id, 741 facing, clientPid, clientUid, servicePid); 742 } 743 break; 744 default: 745 // Should not be reachable 746 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 747 return INVALID_OPERATION; 748 } 749 } else { 750 // A particular HAL version is requested by caller. Create CameraClient 751 // based on the requested HAL version. 752 if (deviceVersion > CAMERA_DEVICE_API_VERSION_1_0 && 753 halVersion == CAMERA_DEVICE_API_VERSION_1_0) { 754 // Only support higher HAL version device opened as HAL1.0 device. 755 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 756 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 757 clientPid, clientUid, servicePid, legacyMode); 758 } else { 759 // Other combinations (e.g. HAL3.x open as HAL2.x) are not supported yet. 760 ALOGE("Invalid camera HAL version %x: HAL %x device can only be" 761 " opened as HAL %x device", halVersion, deviceVersion, 762 CAMERA_DEVICE_API_VERSION_1_0); 763 return INVALID_OPERATION; 764 } 765 } 766 return NO_ERROR; 767} 768 769String8 CameraService::toString(std::set<userid_t> intSet) { 770 String8 s(""); 771 bool first = true; 772 for (userid_t i : intSet) { 773 if (first) { 774 s.appendFormat("%d", i); 775 first = false; 776 } else { 777 s.appendFormat(", %d", i); 778 } 779 } 780 return s; 781} 782 783status_t CameraService::initializeShimMetadata(int cameraId) { 784 int uid = getCallingUid(); 785 786 String16 internalPackageName("media"); 787 String8 id = String8::format("%d", cameraId); 788 status_t ret = NO_ERROR; 789 sp<Client> tmp = nullptr; 790 if ((ret = connectHelper<ICameraClient,Client>(sp<ICameraClient>{nullptr}, id, 791 static_cast<int>(CAMERA_HAL_API_VERSION_UNSPECIFIED), internalPackageName, uid, API_1, 792 false, true, tmp)) != NO_ERROR) { 793 ALOGE("%s: Error %d (%s) initializing shim metadata.", __FUNCTION__, ret, strerror(ret)); 794 return ret; 795 } 796 return NO_ERROR; 797} 798 799status_t CameraService::getLegacyParametersLazy(int cameraId, 800 /*out*/ 801 CameraParameters* parameters) { 802 803 ALOGV("%s: for cameraId: %d", __FUNCTION__, cameraId); 804 805 status_t ret = 0; 806 807 if (parameters == NULL) { 808 ALOGE("%s: parameters must not be null", __FUNCTION__); 809 return BAD_VALUE; 810 } 811 812 String8 id = String8::format("%d", cameraId); 813 814 // Check if we already have parameters 815 { 816 // Scope for service lock 817 Mutex::Autolock lock(mServiceLock); 818 auto cameraState = getCameraState(id); 819 if (cameraState == nullptr) { 820 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 821 return BAD_VALUE; 822 } 823 CameraParameters p = cameraState->getShimParams(); 824 if (!p.isEmpty()) { 825 *parameters = p; 826 return NO_ERROR; 827 } 828 } 829 830 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 831 ret = initializeShimMetadata(cameraId); 832 IPCThreadState::self()->restoreCallingIdentity(token); 833 if (ret != NO_ERROR) { 834 // Error already logged by callee 835 return ret; 836 } 837 838 // Check for parameters again 839 { 840 // Scope for service lock 841 Mutex::Autolock lock(mServiceLock); 842 auto cameraState = getCameraState(id); 843 if (cameraState == nullptr) { 844 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 845 return BAD_VALUE; 846 } 847 CameraParameters p = cameraState->getShimParams(); 848 if (!p.isEmpty()) { 849 *parameters = p; 850 return NO_ERROR; 851 } 852 } 853 854 ALOGE("%s: Parameters were not initialized, or were empty. Device may not be present.", 855 __FUNCTION__); 856 return INVALID_OPERATION; 857} 858 859status_t CameraService::validateConnectLocked(const String8& cameraId, /*inout*/int& clientUid) 860 const { 861 862 int callingPid = getCallingPid(); 863 864 if (clientUid == USE_CALLING_UID) { 865 clientUid = getCallingUid(); 866 } else { 867 // We only trust our own process to forward client UIDs 868 if (callingPid != getpid()) { 869 ALOGE("CameraService::connect X (PID %d) rejected (don't trust clientUid %d)", 870 callingPid, clientUid); 871 return PERMISSION_DENIED; 872 } 873 } 874 875 if (!mModule) { 876 ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)", 877 callingPid); 878 return -ENODEV; 879 } 880 881 if (getCameraState(cameraId) == nullptr) { 882 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 883 cameraId.string()); 884 return -ENODEV; 885 } 886 887 // Check device policy for this camera 888 char value[PROPERTY_VALUE_MAX]; 889 char key[PROPERTY_KEY_MAX]; 890 userid_t clientUserId = multiuser_get_user_id(clientUid); 891 snprintf(key, PROPERTY_KEY_MAX, "sys.secpolicy.camera.off_%d", clientUserId); 892 property_get(key, value, "0"); 893 if (strcmp(value, "1") == 0) { 894 // Camera is disabled by DevicePolicyManager. 895 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is disabled by device " 896 "policy)", callingPid, cameraId.string()); 897 return -EACCES; 898 } 899 900 // Only allow clients who are being used by the current foreground device user, unless calling 901 // from our own process. 902 if (callingPid != getpid() && (mAllowedUsers.find(clientUserId) == mAllowedUsers.end())) { 903 ALOGE("CameraService::connect X (PID %d) rejected (cannot connect from " 904 "device user %d, currently allowed device users: %s)", callingPid, clientUserId, 905 toString(mAllowedUsers).string()); 906 return PERMISSION_DENIED; 907 } 908 909 return checkIfDeviceIsUsable(cameraId); 910} 911 912status_t CameraService::checkIfDeviceIsUsable(const String8& cameraId) const { 913 auto cameraState = getCameraState(cameraId); 914 int callingPid = getCallingPid(); 915 if (cameraState == nullptr) { 916 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 917 cameraId.string()); 918 return -ENODEV; 919 } 920 921 ICameraServiceListener::Status currentStatus = cameraState->getStatus(); 922 if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { 923 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is not connected)", 924 callingPid, cameraId.string()); 925 return -ENODEV; 926 } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) { 927 ALOGE("CameraService::connect X (PID %d) rejected, (camera %s is initializing)", 928 callingPid, cameraId.string()); 929 return -EBUSY; 930 } 931 932 return NO_ERROR; 933} 934 935void CameraService::finishConnectLocked(const sp<BasicClient>& client, 936 const CameraService::DescriptorPtr& desc) { 937 938 // Make a descriptor for the incoming client 939 auto clientDescriptor = CameraService::CameraClientManager::makeClientDescriptor(client, desc); 940 auto evicted = mActiveClientManager.addAndEvict(clientDescriptor); 941 942 logConnected(desc->getKey(), static_cast<int>(desc->getOwnerId()), 943 String8(client->getPackageName())); 944 945 if (evicted.size() > 0) { 946 // This should never happen - clients should already have been removed in disconnect 947 for (auto& i : evicted) { 948 ALOGE("%s: Invalid state: Client for camera %s was not removed in disconnect", 949 __FUNCTION__, i->getKey().string()); 950 } 951 952 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, clients not evicted properly", 953 __FUNCTION__); 954 } 955 956 // And register a death notification for the client callback. Do 957 // this last to avoid Binder policy where a nested Binder 958 // transaction might be pre-empted to service the client death 959 // notification if the client process dies before linkToDeath is 960 // invoked. 961 sp<IBinder> remoteCallback = client->getRemote(); 962 if (remoteCallback != nullptr) { 963 remoteCallback->linkToDeath(this); 964 } 965} 966 967status_t CameraService::handleEvictionsLocked(const String8& cameraId, int clientPid, 968 apiLevel effectiveApiLevel, const sp<IBinder>& remoteCallback, const String8& packageName, 969 /*out*/ 970 sp<BasicClient>* client, 971 std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>* partial) { 972 ATRACE_CALL(); 973 status_t ret = NO_ERROR; 974 std::vector<DescriptorPtr> evictedClients; 975 DescriptorPtr clientDescriptor; 976 { 977 if (effectiveApiLevel == API_1) { 978 // If we are using API1, any existing client for this camera ID with the same remote 979 // should be returned rather than evicted to allow MediaRecorder to work properly. 980 981 auto current = mActiveClientManager.get(cameraId); 982 if (current != nullptr) { 983 auto clientSp = current->getValue(); 984 if (clientSp.get() != nullptr) { // should never be needed 985 if (!clientSp->canCastToApiClient(effectiveApiLevel)) { 986 ALOGW("CameraService connect called from same client, but with a different" 987 " API level, evicting prior client..."); 988 } else if (clientSp->getRemote() == remoteCallback) { 989 ALOGI("CameraService::connect X (PID %d) (second call from same" 990 " app binder, returning the same client)", clientPid); 991 *client = clientSp; 992 return NO_ERROR; 993 } 994 } 995 } 996 } 997 998 // Return error if the device was unplugged or removed by the HAL for some reason 999 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1000 return ret; 1001 } 1002 1003 // Get current active client PIDs 1004 std::vector<int> ownerPids(mActiveClientManager.getAllOwners()); 1005 ownerPids.push_back(clientPid); 1006 1007 // Use the value +PROCESS_STATE_NONEXISTENT, to avoid taking 1008 // address of PROCESS_STATE_NONEXISTENT as a reference argument 1009 // for the vector constructor. PROCESS_STATE_NONEXISTENT does 1010 // not have an out-of-class definition. 1011 std::vector<int> priorities(ownerPids.size(), +PROCESS_STATE_NONEXISTENT); 1012 1013 // Get priorites of all active PIDs 1014 ProcessInfoService::getProcessStatesFromPids(ownerPids.size(), &ownerPids[0], 1015 /*out*/&priorities[0]); 1016 1017 // Update all active clients' priorities 1018 std::map<int,int> pidToPriorityMap; 1019 for (size_t i = 0; i < ownerPids.size() - 1; i++) { 1020 pidToPriorityMap.emplace(ownerPids[i], getCameraPriorityFromProcState(priorities[i])); 1021 } 1022 mActiveClientManager.updatePriorities(pidToPriorityMap); 1023 1024 // Get state for the given cameraId 1025 auto state = getCameraState(cameraId); 1026 if (state == nullptr) { 1027 ALOGE("CameraService::connect X (PID %d) rejected (no camera device with ID %s)", 1028 clientPid, cameraId.string()); 1029 return BAD_VALUE; 1030 } 1031 1032 // Make descriptor for incoming client 1033 clientDescriptor = CameraClientManager::makeClientDescriptor(cameraId, 1034 sp<BasicClient>{nullptr}, static_cast<int32_t>(state->getCost()), 1035 state->getConflicting(), 1036 getCameraPriorityFromProcState(priorities[priorities.size() - 1]), clientPid); 1037 1038 // Find clients that would be evicted 1039 auto evicted = mActiveClientManager.wouldEvict(clientDescriptor); 1040 1041 // If the incoming client was 'evicted,' higher priority clients have the camera in the 1042 // background, so we cannot do evictions 1043 if (std::find(evicted.begin(), evicted.end(), clientDescriptor) != evicted.end()) { 1044 ALOGE("CameraService::connect X (PID %d) rejected (existing client(s) with higher" 1045 " priority).", clientPid); 1046 1047 sp<BasicClient> clientSp = clientDescriptor->getValue(); 1048 String8 curTime = getFormattedCurrentTime(); 1049 auto incompatibleClients = 1050 mActiveClientManager.getIncompatibleClients(clientDescriptor); 1051 1052 String8 msg = String8::format("%s : DENIED connect device %s client for package %s " 1053 "(PID %d, priority %d) due to eviction policy", curTime.string(), 1054 cameraId.string(), packageName.string(), clientPid, 1055 getCameraPriorityFromProcState(priorities[priorities.size() - 1])); 1056 1057 for (auto& i : incompatibleClients) { 1058 msg.appendFormat("\n - Blocked by existing device %s client for package %s" 1059 "(PID %" PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1060 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1061 i->getPriority()); 1062 ALOGE(" Conflicts with: Device %s, client package %s (PID %" 1063 PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1064 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1065 i->getPriority()); 1066 } 1067 1068 // Log the client's attempt 1069 Mutex::Autolock l(mLogLock); 1070 mEventLog.add(msg); 1071 1072 return -EBUSY; 1073 } 1074 1075 for (auto& i : evicted) { 1076 sp<BasicClient> clientSp = i->getValue(); 1077 if (clientSp.get() == nullptr) { 1078 ALOGE("%s: Invalid state: Null client in active client list.", __FUNCTION__); 1079 1080 // TODO: Remove this 1081 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, null client in active list", 1082 __FUNCTION__); 1083 mActiveClientManager.remove(i); 1084 continue; 1085 } 1086 1087 ALOGE("CameraService::connect evicting conflicting client for camera ID %s", 1088 i->getKey().string()); 1089 evictedClients.push_back(i); 1090 1091 // Log the clients evicted 1092 logEvent(String8::format("EVICT device %s client held by package %s (PID" 1093 " %" PRId32 ", priority %" PRId32 ")\n - Evicted by device %s client for" 1094 " package %s (PID %d, priority %" PRId32 ")", 1095 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1096 i->getOwnerId(), i->getPriority(), cameraId.string(), 1097 packageName.string(), clientPid, 1098 getCameraPriorityFromProcState(priorities[priorities.size() - 1]))); 1099 1100 // Notify the client of disconnection 1101 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1102 CaptureResultExtras()); 1103 } 1104 } 1105 1106 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1107 // other clients from connecting in mServiceLockWrapper if held 1108 mServiceLock.unlock(); 1109 1110 // Clear caller identity temporarily so client disconnect PID checks work correctly 1111 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1112 1113 // Destroy evicted clients 1114 for (auto& i : evictedClients) { 1115 // Disconnect is blocking, and should only have returned when HAL has cleaned up 1116 i->getValue()->disconnect(); // Clients will remove themselves from the active client list 1117 } 1118 1119 IPCThreadState::self()->restoreCallingIdentity(token); 1120 1121 for (const auto& i : evictedClients) { 1122 ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")", 1123 __FUNCTION__, i->getKey().string(), i->getOwnerId()); 1124 ret = mActiveClientManager.waitUntilRemoved(i, DEFAULT_DISCONNECT_TIMEOUT_NS); 1125 if (ret == TIMED_OUT) { 1126 ALOGE("%s: Timed out waiting for client for device %s to disconnect, " 1127 "current clients:\n%s", __FUNCTION__, i->getKey().string(), 1128 mActiveClientManager.toString().string()); 1129 return -EBUSY; 1130 } 1131 if (ret != NO_ERROR) { 1132 ALOGE("%s: Received error waiting for client for device %s to disconnect: %s (%d), " 1133 "current clients:\n%s", __FUNCTION__, i->getKey().string(), strerror(-ret), 1134 ret, mActiveClientManager.toString().string()); 1135 return ret; 1136 } 1137 } 1138 1139 evictedClients.clear(); 1140 1141 // Once clients have been disconnected, relock 1142 mServiceLock.lock(); 1143 1144 // Check again if the device was unplugged or something while we weren't holding mServiceLock 1145 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1146 return ret; 1147 } 1148 1149 *partial = clientDescriptor; 1150 return NO_ERROR; 1151} 1152 1153status_t CameraService::connect( 1154 const sp<ICameraClient>& cameraClient, 1155 int cameraId, 1156 const String16& clientPackageName, 1157 int clientUid, 1158 /*out*/ 1159 sp<ICamera>& device) { 1160 1161 ATRACE_CALL(); 1162 status_t ret = NO_ERROR; 1163 String8 id = String8::format("%d", cameraId); 1164 sp<Client> client = nullptr; 1165 ret = connectHelper<ICameraClient,Client>(cameraClient, id, CAMERA_HAL_API_VERSION_UNSPECIFIED, 1166 clientPackageName, clientUid, API_1, false, false, /*out*/client); 1167 1168 if(ret != NO_ERROR) { 1169 logRejected(id, getCallingPid(), String8(clientPackageName), 1170 String8::format("%s (%d)", strerror(-ret), ret)); 1171 return ret; 1172 } 1173 1174 device = client; 1175 return NO_ERROR; 1176} 1177 1178status_t CameraService::connectLegacy( 1179 const sp<ICameraClient>& cameraClient, 1180 int cameraId, int halVersion, 1181 const String16& clientPackageName, 1182 int clientUid, 1183 /*out*/ 1184 sp<ICamera>& device) { 1185 1186 ATRACE_CALL(); 1187 String8 id = String8::format("%d", cameraId); 1188 int apiVersion = mModule->getModuleApiVersion(); 1189 if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED && 1190 apiVersion < CAMERA_MODULE_API_VERSION_2_3) { 1191 /* 1192 * Either the HAL version is unspecified in which case this just creates 1193 * a camera client selected by the latest device version, or 1194 * it's a particular version in which case the HAL must supported 1195 * the open_legacy call 1196 */ 1197 ALOGE("%s: camera HAL module version %x doesn't support connecting to legacy HAL devices!", 1198 __FUNCTION__, apiVersion); 1199 logRejected(id, getCallingPid(), String8(clientPackageName), 1200 String8("HAL module version doesn't support legacy HAL connections")); 1201 return INVALID_OPERATION; 1202 } 1203 1204 status_t ret = NO_ERROR; 1205 sp<Client> client = nullptr; 1206 ret = connectHelper<ICameraClient,Client>(cameraClient, id, halVersion, clientPackageName, 1207 clientUid, API_1, true, false, /*out*/client); 1208 1209 if(ret != NO_ERROR) { 1210 logRejected(id, getCallingPid(), String8(clientPackageName), 1211 String8::format("%s (%d)", strerror(-ret), ret)); 1212 return ret; 1213 } 1214 1215 device = client; 1216 return NO_ERROR; 1217} 1218 1219status_t CameraService::connectDevice( 1220 const sp<ICameraDeviceCallbacks>& cameraCb, 1221 int cameraId, 1222 const String16& clientPackageName, 1223 int clientUid, 1224 /*out*/ 1225 sp<ICameraDeviceUser>& device) { 1226 1227 ATRACE_CALL(); 1228 status_t ret = NO_ERROR; 1229 String8 id = String8::format("%d", cameraId); 1230 sp<CameraDeviceClient> client = nullptr; 1231 ret = connectHelper<ICameraDeviceCallbacks,CameraDeviceClient>(cameraCb, id, 1232 CAMERA_HAL_API_VERSION_UNSPECIFIED, clientPackageName, clientUid, API_2, false, false, 1233 /*out*/client); 1234 1235 if(ret != NO_ERROR) { 1236 logRejected(id, getCallingPid(), String8(clientPackageName), 1237 String8::format("%s (%d)", strerror(-ret), ret)); 1238 return ret; 1239 } 1240 1241 device = client; 1242 return NO_ERROR; 1243} 1244 1245status_t CameraService::setTorchMode(const String16& cameraId, bool enabled, 1246 const sp<IBinder>& clientBinder) { 1247 1248 ATRACE_CALL(); 1249 if (enabled && clientBinder == nullptr) { 1250 ALOGE("%s: torch client binder is NULL", __FUNCTION__); 1251 return -EINVAL; 1252 } 1253 1254 String8 id = String8(cameraId.string()); 1255 int uid = getCallingUid(); 1256 1257 // verify id is valid. 1258 auto state = getCameraState(id); 1259 if (state == nullptr) { 1260 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1261 return -EINVAL; 1262 } 1263 1264 ICameraServiceListener::Status cameraStatus = state->getStatus(); 1265 if (cameraStatus != ICameraServiceListener::STATUS_PRESENT && 1266 cameraStatus != ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1267 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1268 return -EINVAL; 1269 } 1270 1271 { 1272 Mutex::Autolock al(mTorchStatusMutex); 1273 ICameraServiceListener::TorchStatus status; 1274 status_t res = getTorchStatusLocked(id, &status); 1275 if (res) { 1276 ALOGE("%s: getting current torch status failed for camera %s", 1277 __FUNCTION__, id.string()); 1278 return -EINVAL; 1279 } 1280 1281 if (status == ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE) { 1282 if (cameraStatus == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1283 ALOGE("%s: torch mode of camera %s is not available because " 1284 "camera is in use", __FUNCTION__, id.string()); 1285 return -EBUSY; 1286 } else { 1287 ALOGE("%s: torch mode of camera %s is not available due to " 1288 "insufficient resources", __FUNCTION__, id.string()); 1289 return -EUSERS; 1290 } 1291 } 1292 } 1293 1294 { 1295 // Update UID map - this is used in the torch status changed callbacks, so must be done 1296 // before setTorchMode 1297 Mutex::Autolock al(mTorchUidMapMutex); 1298 if (mTorchUidMap.find(id) == mTorchUidMap.end()) { 1299 mTorchUidMap[id].first = uid; 1300 mTorchUidMap[id].second = uid; 1301 } else { 1302 // Set the pending UID 1303 mTorchUidMap[id].first = uid; 1304 } 1305 } 1306 1307 status_t res = mFlashlight->setTorchMode(id, enabled); 1308 1309 if (res) { 1310 ALOGE("%s: setting torch mode of camera %s to %d failed. %s (%d)", 1311 __FUNCTION__, id.string(), enabled, strerror(-res), res); 1312 return res; 1313 } 1314 1315 { 1316 // update the link to client's death 1317 Mutex::Autolock al(mTorchClientMapMutex); 1318 ssize_t index = mTorchClientMap.indexOfKey(id); 1319 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 1320 if (enabled) { 1321 if (index == NAME_NOT_FOUND) { 1322 mTorchClientMap.add(id, clientBinder); 1323 } else { 1324 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1325 mTorchClientMap.replaceValueAt(index, clientBinder); 1326 } 1327 clientBinder->linkToDeath(this); 1328 } else if (index != NAME_NOT_FOUND) { 1329 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1330 } 1331 } 1332 1333 return OK; 1334} 1335 1336void CameraService::notifySystemEvent(int32_t eventId, const int32_t* args, size_t length) { 1337 ATRACE_CALL(); 1338 1339 switch(eventId) { 1340 case ICameraService::USER_SWITCHED: { 1341 doUserSwitch(/*newUserIds*/args, /*length*/length); 1342 break; 1343 } 1344 case ICameraService::NO_EVENT: 1345 default: { 1346 ALOGW("%s: Received invalid system event from system_server: %d", __FUNCTION__, 1347 eventId); 1348 break; 1349 } 1350 } 1351} 1352 1353status_t CameraService::addListener(const sp<ICameraServiceListener>& listener) { 1354 ATRACE_CALL(); 1355 1356 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); 1357 1358 if (listener == nullptr) { 1359 ALOGE("%s: Listener must not be null", __FUNCTION__); 1360 return BAD_VALUE; 1361 } 1362 1363 Mutex::Autolock lock(mServiceLock); 1364 1365 { 1366 Mutex::Autolock lock(mStatusListenerLock); 1367 for (auto& it : mListenerList) { 1368 if (IInterface::asBinder(it) == IInterface::asBinder(listener)) { 1369 ALOGW("%s: Tried to add listener %p which was already subscribed", 1370 __FUNCTION__, listener.get()); 1371 return ALREADY_EXISTS; 1372 } 1373 } 1374 1375 mListenerList.push_back(listener); 1376 } 1377 1378 1379 /* Immediately signal current status to this listener only */ 1380 { 1381 Mutex::Autolock lock(mCameraStatesLock); 1382 for (auto& i : mCameraStates) { 1383 // TODO: Update binder to use String16 for camera IDs and remove; 1384 int id = cameraIdToInt(i.first); 1385 if (id == -1) continue; 1386 1387 listener->onStatusChanged(i.second->getStatus(), id); 1388 } 1389 } 1390 1391 /* Immediately signal current torch status to this listener only */ 1392 { 1393 Mutex::Autolock al(mTorchStatusMutex); 1394 for (size_t i = 0; i < mTorchStatusMap.size(); i++ ) { 1395 String16 id = String16(mTorchStatusMap.keyAt(i).string()); 1396 listener->onTorchStatusChanged(mTorchStatusMap.valueAt(i), id); 1397 } 1398 } 1399 1400 return OK; 1401} 1402 1403status_t CameraService::removeListener(const sp<ICameraServiceListener>& listener) { 1404 ATRACE_CALL(); 1405 1406 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); 1407 1408 if (listener == 0) { 1409 ALOGE("%s: Listener must not be null", __FUNCTION__); 1410 return BAD_VALUE; 1411 } 1412 1413 Mutex::Autolock lock(mServiceLock); 1414 1415 { 1416 Mutex::Autolock lock(mStatusListenerLock); 1417 for (auto it = mListenerList.begin(); it != mListenerList.end(); it++) { 1418 if (IInterface::asBinder(*it) == IInterface::asBinder(listener)) { 1419 mListenerList.erase(it); 1420 return OK; 1421 } 1422 } 1423 } 1424 1425 ALOGW("%s: Tried to remove a listener %p which was not subscribed", 1426 __FUNCTION__, listener.get()); 1427 1428 return BAD_VALUE; 1429} 1430 1431status_t CameraService::getLegacyParameters(int cameraId, /*out*/String16* parameters) { 1432 1433 ATRACE_CALL(); 1434 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1435 1436 if (parameters == NULL) { 1437 ALOGE("%s: parameters must not be null", __FUNCTION__); 1438 return BAD_VALUE; 1439 } 1440 1441 status_t ret = 0; 1442 1443 CameraParameters shimParams; 1444 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 1445 // Error logged by caller 1446 return ret; 1447 } 1448 1449 String8 shimParamsString8 = shimParams.flatten(); 1450 String16 shimParamsString16 = String16(shimParamsString8); 1451 1452 *parameters = shimParamsString16; 1453 1454 return OK; 1455} 1456 1457status_t CameraService::supportsCameraApi(int cameraId, int apiVersion) { 1458 ATRACE_CALL(); 1459 1460 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1461 1462 switch (apiVersion) { 1463 case API_VERSION_1: 1464 case API_VERSION_2: 1465 break; 1466 default: 1467 ALOGE("%s: Bad API version %d", __FUNCTION__, apiVersion); 1468 return BAD_VALUE; 1469 } 1470 1471 int facing = -1; 1472 int deviceVersion = getDeviceVersion(cameraId, &facing); 1473 1474 switch(deviceVersion) { 1475 case CAMERA_DEVICE_API_VERSION_1_0: 1476 case CAMERA_DEVICE_API_VERSION_2_0: 1477 case CAMERA_DEVICE_API_VERSION_2_1: 1478 case CAMERA_DEVICE_API_VERSION_3_0: 1479 case CAMERA_DEVICE_API_VERSION_3_1: 1480 if (apiVersion == API_VERSION_2) { 1481 ALOGV("%s: Camera id %d uses HAL prior to HAL3.2, doesn't support api2 without shim", 1482 __FUNCTION__, cameraId); 1483 return -EOPNOTSUPP; 1484 } else { // if (apiVersion == API_VERSION_1) { 1485 ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported", 1486 __FUNCTION__, cameraId); 1487 return OK; 1488 } 1489 case CAMERA_DEVICE_API_VERSION_3_2: 1490 case CAMERA_DEVICE_API_VERSION_3_3: 1491 ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly", 1492 __FUNCTION__, cameraId); 1493 return OK; 1494 case -1: 1495 ALOGE("%s: Invalid camera id %d", __FUNCTION__, cameraId); 1496 return BAD_VALUE; 1497 default: 1498 ALOGE("%s: Unknown camera device HAL version: %d", __FUNCTION__, deviceVersion); 1499 return INVALID_OPERATION; 1500 } 1501 1502 return OK; 1503} 1504 1505void CameraService::removeByClient(const BasicClient* client) { 1506 Mutex::Autolock lock(mServiceLock); 1507 for (auto& i : mActiveClientManager.getAll()) { 1508 auto clientSp = i->getValue(); 1509 if (clientSp.get() == client) { 1510 mActiveClientManager.remove(i); 1511 } 1512 } 1513} 1514 1515bool CameraService::evictClientIdByRemote(const wp<IBinder>& remote) { 1516 const int callingPid = getCallingPid(); 1517 const int servicePid = getpid(); 1518 bool ret = false; 1519 { 1520 // Acquire mServiceLock and prevent other clients from connecting 1521 std::unique_ptr<AutoConditionLock> lock = 1522 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1523 1524 1525 std::vector<sp<BasicClient>> evicted; 1526 for (auto& i : mActiveClientManager.getAll()) { 1527 auto clientSp = i->getValue(); 1528 if (clientSp.get() == nullptr) { 1529 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1530 mActiveClientManager.remove(i); 1531 continue; 1532 } 1533 if (remote == clientSp->getRemote() && (callingPid == servicePid || 1534 callingPid == clientSp->getClientPid())) { 1535 mActiveClientManager.remove(i); 1536 evicted.push_back(clientSp); 1537 1538 // Notify the client of disconnection 1539 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1540 CaptureResultExtras()); 1541 } 1542 } 1543 1544 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1545 // other clients from connecting in mServiceLockWrapper if held 1546 mServiceLock.unlock(); 1547 1548 // Do not clear caller identity, remote caller should be client proccess 1549 1550 for (auto& i : evicted) { 1551 if (i.get() != nullptr) { 1552 i->disconnect(); 1553 ret = true; 1554 } 1555 } 1556 1557 // Reacquire mServiceLock 1558 mServiceLock.lock(); 1559 1560 } // lock is destroyed, allow further connect calls 1561 1562 return ret; 1563} 1564 1565 1566/** 1567 * Check camera capabilities, such as support for basic color operation 1568 */ 1569int CameraService::checkCameraCapabilities(int id, camera_info info, int *latestStrangeCameraId) { 1570 1571 // Assume all devices pre-v3.3 are backward-compatible 1572 bool isBackwardCompatible = true; 1573 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0 1574 && info.device_version >= CAMERA_DEVICE_API_VERSION_3_3) { 1575 isBackwardCompatible = false; 1576 status_t res; 1577 camera_metadata_ro_entry_t caps; 1578 res = find_camera_metadata_ro_entry( 1579 info.static_camera_characteristics, 1580 ANDROID_REQUEST_AVAILABLE_CAPABILITIES, 1581 &caps); 1582 if (res != 0) { 1583 ALOGW("%s: Unable to find camera capabilities for camera device %d", 1584 __FUNCTION__, id); 1585 caps.count = 0; 1586 } 1587 for (size_t i = 0; i < caps.count; i++) { 1588 if (caps.data.u8[i] == 1589 ANDROID_REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE) { 1590 isBackwardCompatible = true; 1591 break; 1592 } 1593 } 1594 } 1595 1596 if (!isBackwardCompatible) { 1597 mNumberOfNormalCameras--; 1598 *latestStrangeCameraId = id; 1599 } else { 1600 if (id > *latestStrangeCameraId) { 1601 ALOGE("%s: Normal camera ID %d higher than strange camera ID %d. " 1602 "This is not allowed due backward-compatibility requirements", 1603 __FUNCTION__, id, *latestStrangeCameraId); 1604 logServiceError("Invalid order of camera devices", ENODEV); 1605 mNumberOfCameras = 0; 1606 mNumberOfNormalCameras = 0; 1607 return INVALID_OPERATION; 1608 } 1609 } 1610 return OK; 1611} 1612 1613std::shared_ptr<CameraService::CameraState> CameraService::getCameraState( 1614 const String8& cameraId) const { 1615 std::shared_ptr<CameraState> state; 1616 { 1617 Mutex::Autolock lock(mCameraStatesLock); 1618 auto iter = mCameraStates.find(cameraId); 1619 if (iter != mCameraStates.end()) { 1620 state = iter->second; 1621 } 1622 } 1623 return state; 1624} 1625 1626sp<CameraService::BasicClient> CameraService::removeClientLocked(const String8& cameraId) { 1627 // Remove from active clients list 1628 auto clientDescriptorPtr = mActiveClientManager.remove(cameraId); 1629 if (clientDescriptorPtr == nullptr) { 1630 ALOGW("%s: Could not evict client, no client for camera ID %s", __FUNCTION__, 1631 cameraId.string()); 1632 return sp<BasicClient>{nullptr}; 1633 } 1634 1635 return clientDescriptorPtr->getValue(); 1636} 1637 1638void CameraService::doUserSwitch(const int32_t* newUserId, size_t length) { 1639 // Acquire mServiceLock and prevent other clients from connecting 1640 std::unique_ptr<AutoConditionLock> lock = 1641 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1642 1643 std::set<userid_t> newAllowedUsers; 1644 for (size_t i = 0; i < length; i++) { 1645 if (newUserId[i] < 0) { 1646 ALOGE("%s: Bad user ID %d given during user switch, ignoring.", 1647 __FUNCTION__, newUserId[i]); 1648 return; 1649 } 1650 newAllowedUsers.insert(static_cast<userid_t>(newUserId[i])); 1651 } 1652 1653 1654 if (newAllowedUsers == mAllowedUsers) { 1655 ALOGW("%s: Received notification of user switch with no updated user IDs.", __FUNCTION__); 1656 return; 1657 } 1658 1659 logUserSwitch(mAllowedUsers, newAllowedUsers); 1660 1661 mAllowedUsers = std::move(newAllowedUsers); 1662 1663 // Current user has switched, evict all current clients. 1664 std::vector<sp<BasicClient>> evicted; 1665 for (auto& i : mActiveClientManager.getAll()) { 1666 auto clientSp = i->getValue(); 1667 1668 if (clientSp.get() == nullptr) { 1669 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1670 continue; 1671 } 1672 1673 // Don't evict clients that are still allowed. 1674 uid_t clientUid = clientSp->getClientUid(); 1675 userid_t clientUserId = multiuser_get_user_id(clientUid); 1676 if (mAllowedUsers.find(clientUserId) != mAllowedUsers.end()) { 1677 continue; 1678 } 1679 1680 evicted.push_back(clientSp); 1681 1682 String8 curTime = getFormattedCurrentTime(); 1683 1684 ALOGE("Evicting conflicting client for camera ID %s due to user change", 1685 i->getKey().string()); 1686 1687 // Log the clients evicted 1688 logEvent(String8::format("EVICT device %s client held by package %s (PID %" 1689 PRId32 ", priority %" PRId32 ")\n - Evicted due to user switch.", 1690 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1691 i->getOwnerId(), i->getPriority())); 1692 1693 } 1694 1695 // Do not hold mServiceLock while disconnecting clients, but retain the condition 1696 // blocking other clients from connecting in mServiceLockWrapper if held. 1697 mServiceLock.unlock(); 1698 1699 // Clear caller identity temporarily so client disconnect PID checks work correctly 1700 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1701 1702 for (auto& i : evicted) { 1703 i->disconnect(); 1704 } 1705 1706 IPCThreadState::self()->restoreCallingIdentity(token); 1707 1708 // Reacquire mServiceLock 1709 mServiceLock.lock(); 1710} 1711 1712void CameraService::logEvent(const char* event) { 1713 String8 curTime = getFormattedCurrentTime(); 1714 Mutex::Autolock l(mLogLock); 1715 mEventLog.add(String8::format("%s : %s", curTime.string(), event)); 1716} 1717 1718void CameraService::logDisconnected(const char* cameraId, int clientPid, 1719 const char* clientPackage) { 1720 // Log the clients evicted 1721 logEvent(String8::format("DISCONNECT device %s client for package %s (PID %d)", cameraId, 1722 clientPackage, clientPid)); 1723} 1724 1725void CameraService::logConnected(const char* cameraId, int clientPid, 1726 const char* clientPackage) { 1727 // Log the clients evicted 1728 logEvent(String8::format("CONNECT device %s client for package %s (PID %d)", cameraId, 1729 clientPackage, clientPid)); 1730} 1731 1732void CameraService::logRejected(const char* cameraId, int clientPid, 1733 const char* clientPackage, const char* reason) { 1734 // Log the client rejected 1735 logEvent(String8::format("REJECT device %s client for package %s (PID %d), reason: (%s)", 1736 cameraId, clientPackage, clientPid, reason)); 1737} 1738 1739void CameraService::logUserSwitch(const std::set<userid_t>& oldUserIds, 1740 const std::set<userid_t>& newUserIds) { 1741 String8 newUsers = toString(newUserIds); 1742 String8 oldUsers = toString(oldUserIds); 1743 // Log the new and old users 1744 logEvent(String8::format("USER_SWITCH previous allowed users: %s , current allowed users: %s", 1745 oldUsers.string(), newUsers.string())); 1746} 1747 1748void CameraService::logDeviceRemoved(const char* cameraId, const char* reason) { 1749 // Log the device removal 1750 logEvent(String8::format("REMOVE device %s, reason: (%s)", cameraId, reason)); 1751} 1752 1753void CameraService::logDeviceAdded(const char* cameraId, const char* reason) { 1754 // Log the device removal 1755 logEvent(String8::format("ADD device %s, reason: (%s)", cameraId, reason)); 1756} 1757 1758void CameraService::logClientDied(int clientPid, const char* reason) { 1759 // Log the device removal 1760 logEvent(String8::format("DIED client(s) with PID %d, reason: (%s)", clientPid, reason)); 1761} 1762 1763void CameraService::logServiceError(const char* msg, int errorCode) { 1764 String8 curTime = getFormattedCurrentTime(); 1765 logEvent(String8::format("SERVICE ERROR: %s : %d (%s)", msg, errorCode, strerror(errorCode))); 1766} 1767 1768status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply, 1769 uint32_t flags) { 1770 1771 const int pid = getCallingPid(); 1772 const int selfPid = getpid(); 1773 1774 // Permission checks 1775 switch (code) { 1776 case BnCameraService::CONNECT: 1777 case BnCameraService::CONNECT_DEVICE: 1778 case BnCameraService::CONNECT_LEGACY: { 1779 if (pid != selfPid) { 1780 // we're called from a different process, do the real check 1781 if (!checkCallingPermission( 1782 String16("android.permission.CAMERA"))) { 1783 const int uid = getCallingUid(); 1784 ALOGE("Permission Denial: " 1785 "can't use the camera pid=%d, uid=%d", pid, uid); 1786 return PERMISSION_DENIED; 1787 } 1788 } 1789 break; 1790 } 1791 case BnCameraService::NOTIFY_SYSTEM_EVENT: { 1792 if (pid != selfPid) { 1793 // Ensure we're being called by system_server, or similar process with 1794 // permissions to notify the camera service about system events 1795 if (!checkCallingPermission( 1796 String16("android.permission.CAMERA_SEND_SYSTEM_EVENTS"))) { 1797 const int uid = getCallingUid(); 1798 ALOGE("Permission Denial: cannot send updates to camera service about system" 1799 " events from pid=%d, uid=%d", pid, uid); 1800 return PERMISSION_DENIED; 1801 } 1802 } 1803 break; 1804 } 1805 } 1806 1807 return BnCameraService::onTransact(code, data, reply, flags); 1808} 1809 1810// We share the media players for shutter and recording sound for all clients. 1811// A reference count is kept to determine when we will actually release the 1812// media players. 1813 1814MediaPlayer* CameraService::newMediaPlayer(const char *file) { 1815 MediaPlayer* mp = new MediaPlayer(); 1816 if (mp->setDataSource(NULL /* httpService */, file, NULL) == NO_ERROR) { 1817 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 1818 mp->prepare(); 1819 } else { 1820 ALOGE("Failed to load CameraService sounds: %s", file); 1821 return NULL; 1822 } 1823 return mp; 1824} 1825 1826void CameraService::loadSound() { 1827 ATRACE_CALL(); 1828 1829 Mutex::Autolock lock(mSoundLock); 1830 LOG1("CameraService::loadSound ref=%d", mSoundRef); 1831 if (mSoundRef++) return; 1832 1833 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 1834 mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 1835} 1836 1837void CameraService::releaseSound() { 1838 Mutex::Autolock lock(mSoundLock); 1839 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 1840 if (--mSoundRef) return; 1841 1842 for (int i = 0; i < NUM_SOUNDS; i++) { 1843 if (mSoundPlayer[i] != 0) { 1844 mSoundPlayer[i]->disconnect(); 1845 mSoundPlayer[i].clear(); 1846 } 1847 } 1848} 1849 1850void CameraService::playSound(sound_kind kind) { 1851 ATRACE_CALL(); 1852 1853 LOG1("playSound(%d)", kind); 1854 Mutex::Autolock lock(mSoundLock); 1855 sp<MediaPlayer> player = mSoundPlayer[kind]; 1856 if (player != 0) { 1857 player->seekTo(0); 1858 player->start(); 1859 } 1860} 1861 1862// ---------------------------------------------------------------------------- 1863 1864CameraService::Client::Client(const sp<CameraService>& cameraService, 1865 const sp<ICameraClient>& cameraClient, 1866 const String16& clientPackageName, 1867 int cameraId, int cameraFacing, 1868 int clientPid, uid_t clientUid, 1869 int servicePid) : 1870 CameraService::BasicClient(cameraService, 1871 IInterface::asBinder(cameraClient), 1872 clientPackageName, 1873 cameraId, cameraFacing, 1874 clientPid, clientUid, 1875 servicePid) 1876{ 1877 int callingPid = getCallingPid(); 1878 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 1879 1880 mRemoteCallback = cameraClient; 1881 1882 cameraService->loadSound(); 1883 1884 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 1885} 1886 1887// tear down the client 1888CameraService::Client::~Client() { 1889 ALOGV("~Client"); 1890 mDestructionStarted = true; 1891 1892 mCameraService->releaseSound(); 1893 // unconditionally disconnect. function is idempotent 1894 Client::disconnect(); 1895} 1896 1897CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 1898 const sp<IBinder>& remoteCallback, 1899 const String16& clientPackageName, 1900 int cameraId, int cameraFacing, 1901 int clientPid, uid_t clientUid, 1902 int servicePid): 1903 mClientPackageName(clientPackageName), mDisconnected(false) 1904{ 1905 mCameraService = cameraService; 1906 mRemoteBinder = remoteCallback; 1907 mCameraId = cameraId; 1908 mCameraFacing = cameraFacing; 1909 mClientPid = clientPid; 1910 mClientUid = clientUid; 1911 mServicePid = servicePid; 1912 mOpsActive = false; 1913 mDestructionStarted = false; 1914} 1915 1916CameraService::BasicClient::~BasicClient() { 1917 ALOGV("~BasicClient"); 1918 mDestructionStarted = true; 1919} 1920 1921void CameraService::BasicClient::disconnect() { 1922 if (mDisconnected) { 1923 return; 1924 } 1925 mDisconnected = true; 1926 1927 mCameraService->removeByClient(this); 1928 mCameraService->logDisconnected(String8::format("%d", mCameraId), mClientPid, 1929 String8(mClientPackageName)); 1930 1931 sp<IBinder> remote = getRemote(); 1932 if (remote != nullptr) { 1933 remote->unlinkToDeath(mCameraService); 1934 } 1935 1936 finishCameraOps(); 1937 ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid); 1938 1939 // client shouldn't be able to call into us anymore 1940 mClientPid = 0; 1941} 1942 1943String16 CameraService::BasicClient::getPackageName() const { 1944 return mClientPackageName; 1945} 1946 1947 1948int CameraService::BasicClient::getClientPid() const { 1949 return mClientPid; 1950} 1951 1952uid_t CameraService::BasicClient::getClientUid() const { 1953 return mClientUid; 1954} 1955 1956bool CameraService::BasicClient::canCastToApiClient(apiLevel level) const { 1957 // Defaults to API2. 1958 return level == API_2; 1959} 1960 1961status_t CameraService::BasicClient::startCameraOps() { 1962 ATRACE_CALL(); 1963 1964 int32_t res; 1965 // Notify app ops that the camera is not available 1966 mOpsCallback = new OpsCallback(this); 1967 1968 { 1969 ALOGV("%s: Start camera ops, package name = %s, client UID = %d", 1970 __FUNCTION__, String8(mClientPackageName).string(), mClientUid); 1971 } 1972 1973 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 1974 mClientPackageName, mOpsCallback); 1975 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 1976 mClientUid, mClientPackageName); 1977 1978 if (res == AppOpsManager::MODE_ERRORED) { 1979 ALOGI("Camera %d: Access for \"%s\" has been revoked", 1980 mCameraId, String8(mClientPackageName).string()); 1981 return PERMISSION_DENIED; 1982 } 1983 1984 if (res == AppOpsManager::MODE_IGNORED) { 1985 ALOGI("Camera %d: Access for \"%s\" has been restricted", 1986 mCameraId, String8(mClientPackageName).string()); 1987 // Return the same error as for device policy manager rejection 1988 return -EACCES; 1989 } 1990 1991 mOpsActive = true; 1992 1993 // Transition device availability listeners from PRESENT -> NOT_AVAILABLE 1994 mCameraService->updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 1995 String8::format("%d", mCameraId)); 1996 1997 // Transition device state to OPEN 1998 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_OPEN, 1999 String8::format("%d", mCameraId)); 2000 2001 return OK; 2002} 2003 2004status_t CameraService::BasicClient::finishCameraOps() { 2005 ATRACE_CALL(); 2006 2007 // Check if startCameraOps succeeded, and if so, finish the camera op 2008 if (mOpsActive) { 2009 // Notify app ops that the camera is available again 2010 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 2011 mClientPackageName); 2012 mOpsActive = false; 2013 2014 auto rejected = {ICameraServiceListener::STATUS_NOT_PRESENT, 2015 ICameraServiceListener::STATUS_ENUMERATING}; 2016 2017 // Transition to PRESENT if the camera is not in either of the rejected states 2018 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, 2019 String8::format("%d", mCameraId), rejected); 2020 2021 // Transition device state to CLOSED 2022 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_CLOSED, 2023 String8::format("%d", mCameraId)); 2024 2025 // Notify flashlight that a camera device is closed. 2026 mCameraService->mFlashlight->deviceClosed( 2027 String8::format("%d", mCameraId)); 2028 } 2029 // Always stop watching, even if no camera op is active 2030 if (mOpsCallback != NULL) { 2031 mAppOpsManager.stopWatchingMode(mOpsCallback); 2032 } 2033 mOpsCallback.clear(); 2034 2035 return OK; 2036} 2037 2038void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 2039 ATRACE_CALL(); 2040 2041 String8 name(packageName); 2042 String8 myName(mClientPackageName); 2043 2044 if (op != AppOpsManager::OP_CAMERA) { 2045 ALOGW("Unexpected app ops notification received: %d", op); 2046 return; 2047 } 2048 2049 int32_t res; 2050 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 2051 mClientUid, mClientPackageName); 2052 ALOGV("checkOp returns: %d, %s ", res, 2053 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 2054 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 2055 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 2056 "UNKNOWN"); 2057 2058 if (res != AppOpsManager::MODE_ALLOWED) { 2059 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 2060 myName.string()); 2061 // Reset the client PID to allow server-initiated disconnect, 2062 // and to prevent further calls by client. 2063 mClientPid = getCallingPid(); 2064 CaptureResultExtras resultExtras; // a dummy result (invalid) 2065 notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE, resultExtras); 2066 disconnect(); 2067 } 2068} 2069 2070// ---------------------------------------------------------------------------- 2071 2072// Provide client strong pointer for callbacks. 2073sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) { 2074 String8 cameraId = String8::format("%d", (int)(intptr_t) user); 2075 auto clientDescriptor = gCameraService->mActiveClientManager.get(cameraId); 2076 if (clientDescriptor != nullptr) { 2077 return sp<Client>{ 2078 static_cast<Client*>(clientDescriptor->getValue().get())}; 2079 } 2080 return sp<Client>{nullptr}; 2081} 2082 2083void CameraService::Client::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 2084 const CaptureResultExtras& resultExtras) { 2085 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 2086} 2087 2088// NOTE: function is idempotent 2089void CameraService::Client::disconnect() { 2090 ALOGV("Client::disconnect"); 2091 BasicClient::disconnect(); 2092} 2093 2094bool CameraService::Client::canCastToApiClient(apiLevel level) const { 2095 return level == API_1; 2096} 2097 2098CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 2099 mClient(client) { 2100} 2101 2102void CameraService::Client::OpsCallback::opChanged(int32_t op, 2103 const String16& packageName) { 2104 sp<BasicClient> client = mClient.promote(); 2105 if (client != NULL) { 2106 client->opChanged(op, packageName); 2107 } 2108} 2109 2110// ---------------------------------------------------------------------------- 2111// CameraState 2112// ---------------------------------------------------------------------------- 2113 2114CameraService::CameraState::CameraState(const String8& id, int cost, 2115 const std::set<String8>& conflicting) : mId(id), 2116 mStatus(ICameraServiceListener::STATUS_PRESENT), mCost(cost), mConflicting(conflicting) {} 2117 2118CameraService::CameraState::~CameraState() {} 2119 2120ICameraServiceListener::Status CameraService::CameraState::getStatus() const { 2121 Mutex::Autolock lock(mStatusLock); 2122 return mStatus; 2123} 2124 2125CameraParameters CameraService::CameraState::getShimParams() const { 2126 return mShimParams; 2127} 2128 2129void CameraService::CameraState::setShimParams(const CameraParameters& params) { 2130 mShimParams = params; 2131} 2132 2133int CameraService::CameraState::getCost() const { 2134 return mCost; 2135} 2136 2137std::set<String8> CameraService::CameraState::getConflicting() const { 2138 return mConflicting; 2139} 2140 2141String8 CameraService::CameraState::getId() const { 2142 return mId; 2143} 2144 2145// ---------------------------------------------------------------------------- 2146// ClientEventListener 2147// ---------------------------------------------------------------------------- 2148 2149void CameraService::ClientEventListener::onClientAdded( 2150 const resource_policy::ClientDescriptor<String8, 2151 sp<CameraService::BasicClient>>& descriptor) { 2152 auto basicClient = descriptor.getValue(); 2153 if (basicClient.get() != nullptr) { 2154 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2155 notifier.noteStartCamera(descriptor.getKey(), 2156 static_cast<int>(basicClient->getClientUid())); 2157 } 2158} 2159 2160void CameraService::ClientEventListener::onClientRemoved( 2161 const resource_policy::ClientDescriptor<String8, 2162 sp<CameraService::BasicClient>>& descriptor) { 2163 auto basicClient = descriptor.getValue(); 2164 if (basicClient.get() != nullptr) { 2165 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2166 notifier.noteStopCamera(descriptor.getKey(), 2167 static_cast<int>(basicClient->getClientUid())); 2168 } 2169} 2170 2171 2172// ---------------------------------------------------------------------------- 2173// CameraClientManager 2174// ---------------------------------------------------------------------------- 2175 2176CameraService::CameraClientManager::CameraClientManager() { 2177 setListener(std::make_shared<ClientEventListener>()); 2178} 2179 2180CameraService::CameraClientManager::~CameraClientManager() {} 2181 2182sp<CameraService::BasicClient> CameraService::CameraClientManager::getCameraClient( 2183 const String8& id) const { 2184 auto descriptor = get(id); 2185 if (descriptor == nullptr) { 2186 return sp<BasicClient>{nullptr}; 2187 } 2188 return descriptor->getValue(); 2189} 2190 2191String8 CameraService::CameraClientManager::toString() const { 2192 auto all = getAll(); 2193 String8 ret("["); 2194 bool hasAny = false; 2195 for (auto& i : all) { 2196 hasAny = true; 2197 String8 key = i->getKey(); 2198 int32_t cost = i->getCost(); 2199 int32_t pid = i->getOwnerId(); 2200 int32_t priority = i->getPriority(); 2201 auto conflicting = i->getConflicting(); 2202 auto clientSp = i->getValue(); 2203 String8 packageName; 2204 userid_t clientUserId = 0; 2205 if (clientSp.get() != nullptr) { 2206 packageName = String8{clientSp->getPackageName()}; 2207 uid_t clientUid = clientSp->getClientUid(); 2208 clientUserId = multiuser_get_user_id(clientUid); 2209 } 2210 ret.appendFormat("\n(Camera ID: %s, Cost: %" PRId32 ", PID: %" PRId32 ", Priority: %" 2211 PRId32 ", ", key.string(), cost, pid, priority); 2212 2213 if (clientSp.get() != nullptr) { 2214 ret.appendFormat("User Id: %d, ", clientUserId); 2215 } 2216 if (packageName.size() != 0) { 2217 ret.appendFormat("Client Package Name: %s", packageName.string()); 2218 } 2219 2220 ret.append(", Conflicting Client Devices: {"); 2221 for (auto& j : conflicting) { 2222 ret.appendFormat("%s, ", j.string()); 2223 } 2224 ret.append("})"); 2225 } 2226 if (hasAny) ret.append("\n"); 2227 ret.append("]\n"); 2228 return ret; 2229} 2230 2231CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2232 const String8& key, const sp<BasicClient>& value, int32_t cost, 2233 const std::set<String8>& conflictingKeys, int32_t priority, int32_t ownerId) { 2234 2235 return std::make_shared<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>( 2236 key, value, cost, conflictingKeys, priority, ownerId); 2237} 2238 2239CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2240 const sp<BasicClient>& value, const CameraService::DescriptorPtr& partial) { 2241 return makeClientDescriptor(partial->getKey(), value, partial->getCost(), 2242 partial->getConflicting(), partial->getPriority(), partial->getOwnerId()); 2243} 2244 2245// ---------------------------------------------------------------------------- 2246 2247static const int kDumpLockRetries = 50; 2248static const int kDumpLockSleep = 60000; 2249 2250static bool tryLock(Mutex& mutex) 2251{ 2252 bool locked = false; 2253 for (int i = 0; i < kDumpLockRetries; ++i) { 2254 if (mutex.tryLock() == NO_ERROR) { 2255 locked = true; 2256 break; 2257 } 2258 usleep(kDumpLockSleep); 2259 } 2260 return locked; 2261} 2262 2263status_t CameraService::dump(int fd, const Vector<String16>& args) { 2264 ATRACE_CALL(); 2265 2266 String8 result("Dump of the Camera Service:\n"); 2267 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 2268 result = result.format("Permission Denial: " 2269 "can't dump CameraService from pid=%d, uid=%d\n", 2270 getCallingPid(), 2271 getCallingUid()); 2272 write(fd, result.string(), result.size()); 2273 } else { 2274 bool locked = tryLock(mServiceLock); 2275 // failed to lock - CameraService is probably deadlocked 2276 if (!locked) { 2277 result.append("CameraService may be deadlocked\n"); 2278 write(fd, result.string(), result.size()); 2279 } 2280 2281 bool hasClient = false; 2282 if (!mModule) { 2283 result = String8::format("No camera module available!\n"); 2284 write(fd, result.string(), result.size()); 2285 2286 // Dump event log for error information 2287 dumpEventLog(fd); 2288 2289 if (locked) mServiceLock.unlock(); 2290 return NO_ERROR; 2291 } 2292 2293 result = String8::format("Camera module HAL API version: 0x%x\n", mModule->getHalApiVersion()); 2294 result.appendFormat("Camera module API version: 0x%x\n", mModule->getModuleApiVersion()); 2295 result.appendFormat("Camera module name: %s\n", mModule->getModuleName()); 2296 result.appendFormat("Camera module author: %s\n", mModule->getModuleAuthor()); 2297 result.appendFormat("Number of camera devices: %d\n", mNumberOfCameras); 2298 String8 activeClientString = mActiveClientManager.toString(); 2299 result.appendFormat("Active Camera Clients:\n%s", activeClientString.string()); 2300 result.appendFormat("Allowed users:\n%s\n", toString(mAllowedUsers).string()); 2301 2302 sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 2303 if (desc == NULL) { 2304 result.appendFormat("Vendor tags left unimplemented.\n"); 2305 } else { 2306 result.appendFormat("Vendor tag definitions:\n"); 2307 } 2308 2309 write(fd, result.string(), result.size()); 2310 2311 if (desc != NULL) { 2312 desc->dump(fd, /*verbosity*/2, /*indentation*/4); 2313 } 2314 2315 dumpEventLog(fd); 2316 2317 bool stateLocked = tryLock(mCameraStatesLock); 2318 if (!stateLocked) { 2319 result = String8::format("CameraStates in use, may be deadlocked\n"); 2320 write(fd, result.string(), result.size()); 2321 } 2322 2323 for (auto& state : mCameraStates) { 2324 String8 cameraId = state.first; 2325 result = String8::format("Camera %s information:\n", cameraId.string()); 2326 camera_info info; 2327 2328 // TODO: Change getCameraInfo + HAL to use String cameraIds 2329 status_t rc = mModule->getCameraInfo(cameraIdToInt(cameraId), &info); 2330 if (rc != OK) { 2331 result.appendFormat(" Error reading static information!\n"); 2332 write(fd, result.string(), result.size()); 2333 } else { 2334 result.appendFormat(" Facing: %s\n", 2335 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 2336 result.appendFormat(" Orientation: %d\n", info.orientation); 2337 int deviceVersion; 2338 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0) { 2339 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 2340 } else { 2341 deviceVersion = info.device_version; 2342 } 2343 2344 auto conflicting = state.second->getConflicting(); 2345 result.appendFormat(" Resource Cost: %d\n", state.second->getCost()); 2346 result.appendFormat(" Conflicting Devices:"); 2347 for (auto& id : conflicting) { 2348 result.appendFormat(" %s", cameraId.string()); 2349 } 2350 if (conflicting.size() == 0) { 2351 result.appendFormat(" NONE"); 2352 } 2353 result.appendFormat("\n"); 2354 2355 result.appendFormat(" Device version: %#x\n", deviceVersion); 2356 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { 2357 result.appendFormat(" Device static metadata:\n"); 2358 write(fd, result.string(), result.size()); 2359 dump_indented_camera_metadata(info.static_camera_characteristics, 2360 fd, /*verbosity*/2, /*indentation*/4); 2361 } else { 2362 write(fd, result.string(), result.size()); 2363 } 2364 2365 CameraParameters p = state.second->getShimParams(); 2366 if (!p.isEmpty()) { 2367 result = String8::format(" Camera1 API shim is using parameters:\n "); 2368 write(fd, result.string(), result.size()); 2369 p.dump(fd, args); 2370 } 2371 } 2372 2373 auto clientDescriptor = mActiveClientManager.get(cameraId); 2374 if (clientDescriptor == nullptr) { 2375 result = String8::format(" Device %s is closed, no client instance\n", 2376 cameraId.string()); 2377 write(fd, result.string(), result.size()); 2378 continue; 2379 } 2380 hasClient = true; 2381 result = String8::format(" Device %s is open. Client instance dump:\n\n", 2382 cameraId.string()); 2383 result.appendFormat("Client priority level: %d\n", clientDescriptor->getPriority()); 2384 result.appendFormat("Client PID: %d\n", clientDescriptor->getOwnerId()); 2385 2386 auto client = clientDescriptor->getValue(); 2387 result.appendFormat("Client package: %s\n", 2388 String8(client->getPackageName()).string()); 2389 write(fd, result.string(), result.size()); 2390 2391 client->dump(fd, args); 2392 } 2393 2394 if (stateLocked) mCameraStatesLock.unlock(); 2395 2396 if (!hasClient) { 2397 result = String8::format("\nNo active camera clients yet.\n"); 2398 write(fd, result.string(), result.size()); 2399 } 2400 2401 if (locked) mServiceLock.unlock(); 2402 2403 // Dump camera traces if there were any 2404 write(fd, "\n", 1); 2405 camera3::CameraTraces::dump(fd, args); 2406 2407 // change logging level 2408 int n = args.size(); 2409 for (int i = 0; i + 1 < n; i++) { 2410 String16 verboseOption("-v"); 2411 if (args[i] == verboseOption) { 2412 String8 levelStr(args[i+1]); 2413 int level = atoi(levelStr.string()); 2414 result = String8::format("\nSetting log level to %d.\n", level); 2415 setLogLevel(level); 2416 write(fd, result.string(), result.size()); 2417 } 2418 } 2419 } 2420 return NO_ERROR; 2421} 2422 2423void CameraService::dumpEventLog(int fd) { 2424 String8 result = String8("\nPrior client events (most recent at top):\n"); 2425 2426 Mutex::Autolock l(mLogLock); 2427 for (const auto& msg : mEventLog) { 2428 result.appendFormat(" %s\n", msg.string()); 2429 } 2430 2431 if (mEventLog.size() == DEFAULT_EVENT_LOG_LENGTH) { 2432 result.append(" ...\n"); 2433 } else if (mEventLog.size() == 0) { 2434 result.append(" [no events yet]\n"); 2435 } 2436 result.append("\n"); 2437 2438 write(fd, result.string(), result.size()); 2439} 2440 2441void CameraService::handleTorchClientBinderDied(const wp<IBinder> &who) { 2442 Mutex::Autolock al(mTorchClientMapMutex); 2443 for (size_t i = 0; i < mTorchClientMap.size(); i++) { 2444 if (mTorchClientMap[i] == who) { 2445 // turn off the torch mode that was turned on by dead client 2446 String8 cameraId = mTorchClientMap.keyAt(i); 2447 status_t res = mFlashlight->setTorchMode(cameraId, false); 2448 if (res) { 2449 ALOGE("%s: torch client died but couldn't turn off torch: " 2450 "%s (%d)", __FUNCTION__, strerror(-res), res); 2451 return; 2452 } 2453 mTorchClientMap.removeItemsAt(i); 2454 break; 2455 } 2456 } 2457} 2458 2459/*virtual*/void CameraService::binderDied(const wp<IBinder> &who) { 2460 2461 /** 2462 * While tempting to promote the wp<IBinder> into a sp, it's actually not supported by the 2463 * binder driver 2464 */ 2465 2466 logClientDied(getCallingPid(), String8("Binder died unexpectedly")); 2467 2468 // check torch client 2469 handleTorchClientBinderDied(who); 2470 2471 // check camera device client 2472 if(!evictClientIdByRemote(who)) { 2473 ALOGV("%s: Java client's binder death already cleaned up (normal case)", __FUNCTION__); 2474 return; 2475 } 2476 2477 ALOGE("%s: Java client's binder died, removing it from the list of active clients", 2478 __FUNCTION__); 2479} 2480 2481void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId) { 2482 updateStatus(status, cameraId, {}); 2483} 2484 2485void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId, 2486 std::initializer_list<ICameraServiceListener::Status> rejectSourceStates) { 2487 // Do not lock mServiceLock here or can get into a deadlock from 2488 // connect() -> disconnect -> updateStatus 2489 2490 auto state = getCameraState(cameraId); 2491 2492 if (state == nullptr) { 2493 ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__, 2494 cameraId.string()); 2495 return; 2496 } 2497 2498 // Update the status for this camera state, then send the onStatusChangedCallbacks to each 2499 // of the listeners with both the mStatusStatus and mStatusListenerLock held 2500 state->updateStatus(status, cameraId, rejectSourceStates, [this] 2501 (const String8& cameraId, ICameraServiceListener::Status status) { 2502 2503 if (status != ICameraServiceListener::STATUS_ENUMERATING) { 2504 // Update torch status if it has a flash unit. 2505 Mutex::Autolock al(mTorchStatusMutex); 2506 ICameraServiceListener::TorchStatus torchStatus; 2507 if (getTorchStatusLocked(cameraId, &torchStatus) != 2508 NAME_NOT_FOUND) { 2509 ICameraServiceListener::TorchStatus newTorchStatus = 2510 status == ICameraServiceListener::STATUS_PRESENT ? 2511 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF : 2512 ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 2513 if (torchStatus != newTorchStatus) { 2514 onTorchStatusChangedLocked(cameraId, newTorchStatus); 2515 } 2516 } 2517 } 2518 2519 Mutex::Autolock lock(mStatusListenerLock); 2520 2521 for (auto& listener : mListenerList) { 2522 // TODO: Refactor status listeners to use strings for Camera IDs and remove this. 2523 int id = cameraIdToInt(cameraId); 2524 if (id != -1) listener->onStatusChanged(status, id); 2525 } 2526 }); 2527} 2528 2529void CameraService::updateProxyDeviceState(ICameraServiceProxy::CameraState newState, 2530 const String8& cameraId) { 2531 sp<ICameraServiceProxy> proxyBinder = getCameraServiceProxy(); 2532 if (proxyBinder == nullptr) return; 2533 String16 id(cameraId); 2534 proxyBinder->notifyCameraState(id, newState); 2535} 2536 2537status_t CameraService::getTorchStatusLocked( 2538 const String8& cameraId, 2539 ICameraServiceListener::TorchStatus *status) const { 2540 if (!status) { 2541 return BAD_VALUE; 2542 } 2543 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2544 if (index == NAME_NOT_FOUND) { 2545 // invalid camera ID or the camera doesn't have a flash unit 2546 return NAME_NOT_FOUND; 2547 } 2548 2549 *status = mTorchStatusMap.valueAt(index); 2550 return OK; 2551} 2552 2553status_t CameraService::setTorchStatusLocked(const String8& cameraId, 2554 ICameraServiceListener::TorchStatus status) { 2555 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2556 if (index == NAME_NOT_FOUND) { 2557 return BAD_VALUE; 2558 } 2559 ICameraServiceListener::TorchStatus& item = 2560 mTorchStatusMap.editValueAt(index); 2561 item = status; 2562 2563 return OK; 2564} 2565 2566}; // namespace android 2567