CameraService.cpp revision 52aad85627f5216e7a3d9db425d2cc409f998a01
187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/* 287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar * Copyright (C) 2008 The Android Open Source Project 387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar * 487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar * Licensed under the Apache License, Version 2.0 (the "License"); 587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar * you may not use this file except in compliance with the License. 687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar * You may obtain a copy of the License at 787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar * 887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar * 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 950status_t CameraService::handleEvictionsLocked(const String8& cameraId, int clientPid, 951 apiLevel effectiveApiLevel, const sp<IBinder>& remoteCallback, const String8& packageName, 952 /*out*/ 953 sp<BasicClient>* client, 954 std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>* partial) { 955 956 status_t ret = NO_ERROR; 957 std::vector<DescriptorPtr> evictedClients; 958 DescriptorPtr clientDescriptor; 959 { 960 if (effectiveApiLevel == API_1) { 961 // If we are using API1, any existing client for this camera ID with the same remote 962 // should be returned rather than evicted to allow MediaRecorder to work properly. 963 964 auto current = mActiveClientManager.get(cameraId); 965 if (current != nullptr) { 966 auto clientSp = current->getValue(); 967 if (clientSp.get() != nullptr) { // should never be needed 968 if (!clientSp->canCastToApiClient(effectiveApiLevel)) { 969 ALOGW("CameraService connect called from same client, but with a different" 970 " API level, evicting prior client..."); 971 } else if (clientSp->getRemote() == remoteCallback) { 972 ALOGI("CameraService::connect X (PID %d) (second call from same" 973 " app binder, returning the same client)", clientPid); 974 *client = clientSp; 975 return NO_ERROR; 976 } 977 } 978 } 979 } 980 981 // Return error if the device was unplugged or removed by the HAL for some reason 982 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 983 return ret; 984 } 985 986 // Get current active client PIDs 987 std::vector<int> ownerPids(mActiveClientManager.getAllOwners()); 988 ownerPids.push_back(clientPid); 989 990 // Use the value +PROCESS_STATE_NONEXISTENT, to avoid taking 991 // address of PROCESS_STATE_NONEXISTENT as a reference argument 992 // for the vector constructor. PROCESS_STATE_NONEXISTENT does 993 // not have an out-of-class definition. 994 std::vector<int> priorities(ownerPids.size(), +PROCESS_STATE_NONEXISTENT); 995 996 // Get priorites of all active PIDs 997 ProcessInfoService::getProcessStatesFromPids(ownerPids.size(), &ownerPids[0], 998 /*out*/&priorities[0]); 999 1000 // Update all active clients' priorities 1001 std::map<int,int> pidToPriorityMap; 1002 for (size_t i = 0; i < ownerPids.size() - 1; i++) { 1003 pidToPriorityMap.emplace(ownerPids[i], getCameraPriorityFromProcState(priorities[i])); 1004 } 1005 mActiveClientManager.updatePriorities(pidToPriorityMap); 1006 1007 // Get state for the given cameraId 1008 auto state = getCameraState(cameraId); 1009 if (state == nullptr) { 1010 ALOGE("CameraService::connect X (PID %d) rejected (no camera device with ID %s)", 1011 clientPid, cameraId.string()); 1012 return BAD_VALUE; 1013 } 1014 1015 // Make descriptor for incoming client 1016 clientDescriptor = CameraClientManager::makeClientDescriptor(cameraId, 1017 sp<BasicClient>{nullptr}, static_cast<int32_t>(state->getCost()), 1018 state->getConflicting(), 1019 getCameraPriorityFromProcState(priorities[priorities.size() - 1]), clientPid); 1020 1021 // Find clients that would be evicted 1022 auto evicted = mActiveClientManager.wouldEvict(clientDescriptor); 1023 1024 // If the incoming client was 'evicted,' higher priority clients have the camera in the 1025 // background, so we cannot do evictions 1026 if (std::find(evicted.begin(), evicted.end(), clientDescriptor) != evicted.end()) { 1027 ALOGE("CameraService::connect X (PID %d) rejected (existing client(s) with higher" 1028 " priority).", clientPid); 1029 1030 sp<BasicClient> clientSp = clientDescriptor->getValue(); 1031 String8 curTime = getFormattedCurrentTime(); 1032 auto incompatibleClients = 1033 mActiveClientManager.getIncompatibleClients(clientDescriptor); 1034 1035 String8 msg = String8::format("%s : DENIED connect device %s client for package %s " 1036 "(PID %d, priority %d) due to eviction policy", curTime.string(), 1037 cameraId.string(), packageName.string(), clientPid, 1038 getCameraPriorityFromProcState(priorities[priorities.size() - 1])); 1039 1040 for (auto& i : incompatibleClients) { 1041 msg.appendFormat("\n - Blocked by existing device %s client for package %s" 1042 "(PID %" PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1043 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1044 i->getPriority()); 1045 ALOGE(" Conflicts with: Device %s, client package %s (PID %" 1046 PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1047 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1048 i->getPriority()); 1049 } 1050 1051 // Log the client's attempt 1052 Mutex::Autolock l(mLogLock); 1053 mEventLog.add(msg); 1054 1055 return -EBUSY; 1056 } 1057 1058 for (auto& i : evicted) { 1059 sp<BasicClient> clientSp = i->getValue(); 1060 if (clientSp.get() == nullptr) { 1061 ALOGE("%s: Invalid state: Null client in active client list.", __FUNCTION__); 1062 1063 // TODO: Remove this 1064 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, null client in active list", 1065 __FUNCTION__); 1066 mActiveClientManager.remove(i); 1067 continue; 1068 } 1069 1070 ALOGE("CameraService::connect evicting conflicting client for camera ID %s", 1071 i->getKey().string()); 1072 evictedClients.push_back(i); 1073 1074 // Log the clients evicted 1075 logEvent(String8::format("EVICT device %s client held by package %s (PID" 1076 " %" PRId32 ", priority %" PRId32 ")\n - Evicted by device %s client for" 1077 " package %s (PID %d, priority %" PRId32 ")", 1078 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1079 i->getOwnerId(), i->getPriority(), cameraId.string(), 1080 packageName.string(), clientPid, 1081 getCameraPriorityFromProcState(priorities[priorities.size() - 1]))); 1082 1083 // Notify the client of disconnection 1084 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1085 CaptureResultExtras()); 1086 } 1087 } 1088 1089 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1090 // other clients from connecting in mServiceLockWrapper if held 1091 mServiceLock.unlock(); 1092 1093 // Clear caller identity temporarily so client disconnect PID checks work correctly 1094 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1095 1096 // Destroy evicted clients 1097 for (auto& i : evictedClients) { 1098 // Disconnect is blocking, and should only have returned when HAL has cleaned up 1099 i->getValue()->disconnect(); // Clients will remove themselves from the active client list 1100 } 1101 1102 IPCThreadState::self()->restoreCallingIdentity(token); 1103 1104 for (const auto& i : evictedClients) { 1105 ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")", 1106 __FUNCTION__, i->getKey().string(), i->getOwnerId()); 1107 ret = mActiveClientManager.waitUntilRemoved(i, DEFAULT_DISCONNECT_TIMEOUT_NS); 1108 if (ret == TIMED_OUT) { 1109 ALOGE("%s: Timed out waiting for client for device %s to disconnect, " 1110 "current clients:\n%s", __FUNCTION__, i->getKey().string(), 1111 mActiveClientManager.toString().string()); 1112 return -EBUSY; 1113 } 1114 if (ret != NO_ERROR) { 1115 ALOGE("%s: Received error waiting for client for device %s to disconnect: %s (%d), " 1116 "current clients:\n%s", __FUNCTION__, i->getKey().string(), strerror(-ret), 1117 ret, mActiveClientManager.toString().string()); 1118 return ret; 1119 } 1120 } 1121 1122 evictedClients.clear(); 1123 1124 // Once clients have been disconnected, relock 1125 mServiceLock.lock(); 1126 1127 // Check again if the device was unplugged or something while we weren't holding mServiceLock 1128 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1129 return ret; 1130 } 1131 1132 *partial = clientDescriptor; 1133 return NO_ERROR; 1134} 1135 1136status_t CameraService::connect( 1137 const sp<ICameraClient>& cameraClient, 1138 int cameraId, 1139 const String16& clientPackageName, 1140 int clientUid, 1141 /*out*/ 1142 sp<ICamera>& device) { 1143 1144 status_t ret = NO_ERROR; 1145 String8 id = String8::format("%d", cameraId); 1146 sp<Client> client = nullptr; 1147 ret = connectHelper<ICameraClient,Client>(cameraClient, id, CAMERA_HAL_API_VERSION_UNSPECIFIED, 1148 clientPackageName, clientUid, API_1, false, false, /*out*/client); 1149 1150 if(ret != NO_ERROR) { 1151 logRejected(id, getCallingPid(), String8(clientPackageName), 1152 String8::format("%s (%d)", strerror(-ret), ret)); 1153 return ret; 1154 } 1155 1156 device = client; 1157 return NO_ERROR; 1158} 1159 1160status_t CameraService::connectLegacy( 1161 const sp<ICameraClient>& cameraClient, 1162 int cameraId, int halVersion, 1163 const String16& clientPackageName, 1164 int clientUid, 1165 /*out*/ 1166 sp<ICamera>& device) { 1167 1168 String8 id = String8::format("%d", cameraId); 1169 int apiVersion = mModule->getModuleApiVersion(); 1170 if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED && 1171 apiVersion < CAMERA_MODULE_API_VERSION_2_3) { 1172 /* 1173 * Either the HAL version is unspecified in which case this just creates 1174 * a camera client selected by the latest device version, or 1175 * it's a particular version in which case the HAL must supported 1176 * the open_legacy call 1177 */ 1178 ALOGE("%s: camera HAL module version %x doesn't support connecting to legacy HAL devices!", 1179 __FUNCTION__, apiVersion); 1180 logRejected(id, getCallingPid(), String8(clientPackageName), 1181 String8("HAL module version doesn't support legacy HAL connections")); 1182 return INVALID_OPERATION; 1183 } 1184 1185 status_t ret = NO_ERROR; 1186 sp<Client> client = nullptr; 1187 ret = connectHelper<ICameraClient,Client>(cameraClient, id, halVersion, clientPackageName, 1188 clientUid, API_1, true, false, /*out*/client); 1189 1190 if(ret != NO_ERROR) { 1191 logRejected(id, getCallingPid(), String8(clientPackageName), 1192 String8::format("%s (%d)", strerror(-ret), ret)); 1193 return ret; 1194 } 1195 1196 device = client; 1197 return NO_ERROR; 1198} 1199 1200status_t CameraService::connectDevice( 1201 const sp<ICameraDeviceCallbacks>& cameraCb, 1202 int cameraId, 1203 const String16& clientPackageName, 1204 int clientUid, 1205 /*out*/ 1206 sp<ICameraDeviceUser>& device) { 1207 1208 status_t ret = NO_ERROR; 1209 String8 id = String8::format("%d", cameraId); 1210 sp<CameraDeviceClient> client = nullptr; 1211 ret = connectHelper<ICameraDeviceCallbacks,CameraDeviceClient>(cameraCb, id, 1212 CAMERA_HAL_API_VERSION_UNSPECIFIED, clientPackageName, clientUid, API_2, false, false, 1213 /*out*/client); 1214 1215 if(ret != NO_ERROR) { 1216 logRejected(id, getCallingPid(), String8(clientPackageName), 1217 String8::format("%s (%d)", strerror(-ret), ret)); 1218 return ret; 1219 } 1220 1221 device = client; 1222 return NO_ERROR; 1223} 1224 1225status_t CameraService::setTorchMode(const String16& cameraId, bool enabled, 1226 const sp<IBinder>& clientBinder) { 1227 if (enabled && clientBinder == nullptr) { 1228 ALOGE("%s: torch client binder is NULL", __FUNCTION__); 1229 return -EINVAL; 1230 } 1231 1232 String8 id = String8(cameraId.string()); 1233 int uid = getCallingUid(); 1234 1235 // verify id is valid. 1236 auto state = getCameraState(id); 1237 if (state == nullptr) { 1238 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1239 return -EINVAL; 1240 } 1241 1242 ICameraServiceListener::Status cameraStatus = state->getStatus(); 1243 if (cameraStatus != ICameraServiceListener::STATUS_PRESENT && 1244 cameraStatus != ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1245 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1246 return -EINVAL; 1247 } 1248 1249 { 1250 Mutex::Autolock al(mTorchStatusMutex); 1251 ICameraServiceListener::TorchStatus status; 1252 status_t res = getTorchStatusLocked(id, &status); 1253 if (res) { 1254 ALOGE("%s: getting current torch status failed for camera %s", 1255 __FUNCTION__, id.string()); 1256 return -EINVAL; 1257 } 1258 1259 if (status == ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE) { 1260 if (cameraStatus == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1261 ALOGE("%s: torch mode of camera %s is not available because " 1262 "camera is in use", __FUNCTION__, id.string()); 1263 return -EBUSY; 1264 } else { 1265 ALOGE("%s: torch mode of camera %s is not available due to " 1266 "insufficient resources", __FUNCTION__, id.string()); 1267 return -EUSERS; 1268 } 1269 } 1270 } 1271 1272 { 1273 // Update UID map - this is used in the torch status changed callbacks, so must be done 1274 // before setTorchMode 1275 Mutex::Autolock al(mTorchUidMapMutex); 1276 if (mTorchUidMap.find(id) == mTorchUidMap.end()) { 1277 mTorchUidMap[id].first = uid; 1278 mTorchUidMap[id].second = uid; 1279 } else { 1280 // Set the pending UID 1281 mTorchUidMap[id].first = uid; 1282 } 1283 } 1284 1285 status_t res = mFlashlight->setTorchMode(id, enabled); 1286 1287 if (res) { 1288 ALOGE("%s: setting torch mode of camera %s to %d failed. %s (%d)", 1289 __FUNCTION__, id.string(), enabled, strerror(-res), res); 1290 return res; 1291 } 1292 1293 { 1294 // update the link to client's death 1295 Mutex::Autolock al(mTorchClientMapMutex); 1296 ssize_t index = mTorchClientMap.indexOfKey(id); 1297 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 1298 if (enabled) { 1299 if (index == NAME_NOT_FOUND) { 1300 mTorchClientMap.add(id, clientBinder); 1301 } else { 1302 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1303 mTorchClientMap.replaceValueAt(index, clientBinder); 1304 } 1305 clientBinder->linkToDeath(this); 1306 } else if (index != NAME_NOT_FOUND) { 1307 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1308 } 1309 } 1310 1311 return OK; 1312} 1313 1314void CameraService::notifySystemEvent(int32_t eventId, const int32_t* args, size_t length) { 1315 switch(eventId) { 1316 case ICameraService::USER_SWITCHED: { 1317 doUserSwitch(/*newUserIds*/args, /*length*/length); 1318 break; 1319 } 1320 case ICameraService::NO_EVENT: 1321 default: { 1322 ALOGW("%s: Received invalid system event from system_server: %d", __FUNCTION__, 1323 eventId); 1324 break; 1325 } 1326 } 1327} 1328 1329status_t CameraService::addListener(const sp<ICameraServiceListener>& listener) { 1330 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); 1331 1332 if (listener == nullptr) { 1333 ALOGE("%s: Listener must not be null", __FUNCTION__); 1334 return BAD_VALUE; 1335 } 1336 1337 Mutex::Autolock lock(mServiceLock); 1338 1339 { 1340 Mutex::Autolock lock(mStatusListenerLock); 1341 for (auto& it : mListenerList) { 1342 if (IInterface::asBinder(it) == IInterface::asBinder(listener)) { 1343 ALOGW("%s: Tried to add listener %p which was already subscribed", 1344 __FUNCTION__, listener.get()); 1345 return ALREADY_EXISTS; 1346 } 1347 } 1348 1349 mListenerList.push_back(listener); 1350 } 1351 1352 1353 /* Immediately signal current status to this listener only */ 1354 { 1355 Mutex::Autolock lock(mCameraStatesLock); 1356 for (auto& i : mCameraStates) { 1357 // TODO: Update binder to use String16 for camera IDs and remove; 1358 int id = cameraIdToInt(i.first); 1359 if (id == -1) continue; 1360 1361 listener->onStatusChanged(i.second->getStatus(), id); 1362 } 1363 } 1364 1365 /* Immediately signal current torch status to this listener only */ 1366 { 1367 Mutex::Autolock al(mTorchStatusMutex); 1368 for (size_t i = 0; i < mTorchStatusMap.size(); i++ ) { 1369 String16 id = String16(mTorchStatusMap.keyAt(i).string()); 1370 listener->onTorchStatusChanged(mTorchStatusMap.valueAt(i), id); 1371 } 1372 } 1373 1374 return OK; 1375} 1376 1377status_t CameraService::removeListener(const sp<ICameraServiceListener>& listener) { 1378 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); 1379 1380 if (listener == 0) { 1381 ALOGE("%s: Listener must not be null", __FUNCTION__); 1382 return BAD_VALUE; 1383 } 1384 1385 Mutex::Autolock lock(mServiceLock); 1386 1387 { 1388 Mutex::Autolock lock(mStatusListenerLock); 1389 for (auto it = mListenerList.begin(); it != mListenerList.end(); it++) { 1390 if (IInterface::asBinder(*it) == IInterface::asBinder(listener)) { 1391 mListenerList.erase(it); 1392 return OK; 1393 } 1394 } 1395 } 1396 1397 ALOGW("%s: Tried to remove a listener %p which was not subscribed", 1398 __FUNCTION__, listener.get()); 1399 1400 return BAD_VALUE; 1401} 1402 1403status_t CameraService::getLegacyParameters(int cameraId, /*out*/String16* parameters) { 1404 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1405 1406 if (parameters == NULL) { 1407 ALOGE("%s: parameters must not be null", __FUNCTION__); 1408 return BAD_VALUE; 1409 } 1410 1411 status_t ret = 0; 1412 1413 CameraParameters shimParams; 1414 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 1415 // Error logged by caller 1416 return ret; 1417 } 1418 1419 String8 shimParamsString8 = shimParams.flatten(); 1420 String16 shimParamsString16 = String16(shimParamsString8); 1421 1422 *parameters = shimParamsString16; 1423 1424 return OK; 1425} 1426 1427status_t CameraService::supportsCameraApi(int cameraId, int apiVersion) { 1428 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1429 1430 switch (apiVersion) { 1431 case API_VERSION_1: 1432 case API_VERSION_2: 1433 break; 1434 default: 1435 ALOGE("%s: Bad API version %d", __FUNCTION__, apiVersion); 1436 return BAD_VALUE; 1437 } 1438 1439 int facing = -1; 1440 int deviceVersion = getDeviceVersion(cameraId, &facing); 1441 1442 switch(deviceVersion) { 1443 case CAMERA_DEVICE_API_VERSION_1_0: 1444 case CAMERA_DEVICE_API_VERSION_2_0: 1445 case CAMERA_DEVICE_API_VERSION_2_1: 1446 case CAMERA_DEVICE_API_VERSION_3_0: 1447 case CAMERA_DEVICE_API_VERSION_3_1: 1448 if (apiVersion == API_VERSION_2) { 1449 ALOGV("%s: Camera id %d uses HAL prior to HAL3.2, doesn't support api2 without shim", 1450 __FUNCTION__, cameraId); 1451 return -EOPNOTSUPP; 1452 } else { // if (apiVersion == API_VERSION_1) { 1453 ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported", 1454 __FUNCTION__, cameraId); 1455 return OK; 1456 } 1457 case CAMERA_DEVICE_API_VERSION_3_2: 1458 case CAMERA_DEVICE_API_VERSION_3_3: 1459 ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly", 1460 __FUNCTION__, cameraId); 1461 return OK; 1462 case -1: 1463 ALOGE("%s: Invalid camera id %d", __FUNCTION__, cameraId); 1464 return BAD_VALUE; 1465 default: 1466 ALOGE("%s: Unknown camera device HAL version: %d", __FUNCTION__, deviceVersion); 1467 return INVALID_OPERATION; 1468 } 1469 1470 return OK; 1471} 1472 1473void CameraService::removeByClient(const BasicClient* client) { 1474 Mutex::Autolock lock(mServiceLock); 1475 for (auto& i : mActiveClientManager.getAll()) { 1476 auto clientSp = i->getValue(); 1477 if (clientSp.get() == client) { 1478 mActiveClientManager.remove(i); 1479 } 1480 } 1481} 1482 1483bool CameraService::evictClientIdByRemote(const wp<IBinder>& remote) { 1484 const int callingPid = getCallingPid(); 1485 const int servicePid = getpid(); 1486 bool ret = false; 1487 { 1488 // Acquire mServiceLock and prevent other clients from connecting 1489 std::unique_ptr<AutoConditionLock> lock = 1490 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1491 1492 1493 std::vector<sp<BasicClient>> evicted; 1494 for (auto& i : mActiveClientManager.getAll()) { 1495 auto clientSp = i->getValue(); 1496 if (clientSp.get() == nullptr) { 1497 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1498 mActiveClientManager.remove(i); 1499 continue; 1500 } 1501 if (remote == clientSp->getRemote() && (callingPid == servicePid || 1502 callingPid == clientSp->getClientPid())) { 1503 mActiveClientManager.remove(i); 1504 evicted.push_back(clientSp); 1505 1506 // Notify the client of disconnection 1507 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1508 CaptureResultExtras()); 1509 } 1510 } 1511 1512 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1513 // other clients from connecting in mServiceLockWrapper if held 1514 mServiceLock.unlock(); 1515 1516 // Do not clear caller identity, remote caller should be client proccess 1517 1518 for (auto& i : evicted) { 1519 if (i.get() != nullptr) { 1520 i->disconnect(); 1521 ret = true; 1522 } 1523 } 1524 1525 // Reacquire mServiceLock 1526 mServiceLock.lock(); 1527 1528 } // lock is destroyed, allow further connect calls 1529 1530 return ret; 1531} 1532 1533 1534/** 1535 * Check camera capabilities, such as support for basic color operation 1536 */ 1537int CameraService::checkCameraCapabilities(int id, camera_info info, int *latestStrangeCameraId) { 1538 1539 // Assume all devices pre-v3.3 are backward-compatible 1540 bool isBackwardCompatible = true; 1541 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0 1542 && info.device_version >= CAMERA_DEVICE_API_VERSION_3_3) { 1543 isBackwardCompatible = false; 1544 status_t res; 1545 camera_metadata_ro_entry_t caps; 1546 res = find_camera_metadata_ro_entry( 1547 info.static_camera_characteristics, 1548 ANDROID_REQUEST_AVAILABLE_CAPABILITIES, 1549 &caps); 1550 if (res != 0) { 1551 ALOGW("%s: Unable to find camera capabilities for camera device %d", 1552 __FUNCTION__, id); 1553 caps.count = 0; 1554 } 1555 for (size_t i = 0; i < caps.count; i++) { 1556 if (caps.data.u8[i] == 1557 ANDROID_REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE) { 1558 isBackwardCompatible = true; 1559 break; 1560 } 1561 } 1562 } 1563 1564 if (!isBackwardCompatible) { 1565 mNumberOfNormalCameras--; 1566 *latestStrangeCameraId = id; 1567 } else { 1568 if (id > *latestStrangeCameraId) { 1569 ALOGE("%s: Normal camera ID %d higher than strange camera ID %d. " 1570 "This is not allowed due backward-compatibility requirements", 1571 __FUNCTION__, id, *latestStrangeCameraId); 1572 logServiceError("Invalid order of camera devices", ENODEV); 1573 mNumberOfCameras = 0; 1574 mNumberOfNormalCameras = 0; 1575 return INVALID_OPERATION; 1576 } 1577 } 1578 return OK; 1579} 1580 1581std::shared_ptr<CameraService::CameraState> CameraService::getCameraState( 1582 const String8& cameraId) const { 1583 std::shared_ptr<CameraState> state; 1584 { 1585 Mutex::Autolock lock(mCameraStatesLock); 1586 auto iter = mCameraStates.find(cameraId); 1587 if (iter != mCameraStates.end()) { 1588 state = iter->second; 1589 } 1590 } 1591 return state; 1592} 1593 1594sp<CameraService::BasicClient> CameraService::removeClientLocked(const String8& cameraId) { 1595 // Remove from active clients list 1596 auto clientDescriptorPtr = mActiveClientManager.remove(cameraId); 1597 if (clientDescriptorPtr == nullptr) { 1598 ALOGW("%s: Could not evict client, no client for camera ID %s", __FUNCTION__, 1599 cameraId.string()); 1600 return sp<BasicClient>{nullptr}; 1601 } 1602 1603 return clientDescriptorPtr->getValue(); 1604} 1605 1606void CameraService::doUserSwitch(const int32_t* newUserId, size_t length) { 1607 // Acquire mServiceLock and prevent other clients from connecting 1608 std::unique_ptr<AutoConditionLock> lock = 1609 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1610 1611 std::set<userid_t> newAllowedUsers; 1612 for (size_t i = 0; i < length; i++) { 1613 if (newUserId[i] < 0) { 1614 ALOGE("%s: Bad user ID %d given during user switch, ignoring.", 1615 __FUNCTION__, newUserId[i]); 1616 return; 1617 } 1618 newAllowedUsers.insert(static_cast<userid_t>(newUserId[i])); 1619 } 1620 1621 1622 if (newAllowedUsers == mAllowedUsers) { 1623 ALOGW("%s: Received notification of user switch with no updated user IDs.", __FUNCTION__); 1624 return; 1625 } 1626 1627 logUserSwitch(mAllowedUsers, newAllowedUsers); 1628 1629 mAllowedUsers = std::move(newAllowedUsers); 1630 1631 // Current user has switched, evict all current clients. 1632 std::vector<sp<BasicClient>> evicted; 1633 for (auto& i : mActiveClientManager.getAll()) { 1634 auto clientSp = i->getValue(); 1635 1636 if (clientSp.get() == nullptr) { 1637 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1638 continue; 1639 } 1640 1641 // Don't evict clients that are still allowed. 1642 uid_t clientUid = clientSp->getClientUid(); 1643 userid_t clientUserId = multiuser_get_user_id(clientUid); 1644 if (mAllowedUsers.find(clientUserId) != mAllowedUsers.end()) { 1645 continue; 1646 } 1647 1648 evicted.push_back(clientSp); 1649 1650 String8 curTime = getFormattedCurrentTime(); 1651 1652 ALOGE("Evicting conflicting client for camera ID %s due to user change", 1653 i->getKey().string()); 1654 1655 // Log the clients evicted 1656 logEvent(String8::format("EVICT device %s client held by package %s (PID %" 1657 PRId32 ", priority %" PRId32 ")\n - Evicted due to user switch.", 1658 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1659 i->getOwnerId(), i->getPriority())); 1660 1661 } 1662 1663 // Do not hold mServiceLock while disconnecting clients, but retain the condition 1664 // blocking other clients from connecting in mServiceLockWrapper if held. 1665 mServiceLock.unlock(); 1666 1667 // Clear caller identity temporarily so client disconnect PID checks work correctly 1668 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1669 1670 for (auto& i : evicted) { 1671 i->disconnect(); 1672 } 1673 1674 IPCThreadState::self()->restoreCallingIdentity(token); 1675 1676 // Reacquire mServiceLock 1677 mServiceLock.lock(); 1678} 1679 1680void CameraService::logEvent(const char* event) { 1681 String8 curTime = getFormattedCurrentTime(); 1682 Mutex::Autolock l(mLogLock); 1683 mEventLog.add(String8::format("%s : %s", curTime.string(), event)); 1684} 1685 1686void CameraService::logDisconnected(const char* cameraId, int clientPid, 1687 const char* clientPackage) { 1688 // Log the clients evicted 1689 logEvent(String8::format("DISCONNECT device %s client for package %s (PID %d)", cameraId, 1690 clientPackage, clientPid)); 1691} 1692 1693void CameraService::logConnected(const char* cameraId, int clientPid, 1694 const char* clientPackage) { 1695 // Log the clients evicted 1696 logEvent(String8::format("CONNECT device %s client for package %s (PID %d)", cameraId, 1697 clientPackage, clientPid)); 1698} 1699 1700void CameraService::logRejected(const char* cameraId, int clientPid, 1701 const char* clientPackage, const char* reason) { 1702 // Log the client rejected 1703 logEvent(String8::format("REJECT device %s client for package %s (PID %d), reason: (%s)", 1704 cameraId, clientPackage, clientPid, reason)); 1705} 1706 1707void CameraService::logUserSwitch(const std::set<userid_t>& oldUserIds, 1708 const std::set<userid_t>& newUserIds) { 1709 String8 newUsers = toString(newUserIds); 1710 String8 oldUsers = toString(oldUserIds); 1711 // Log the new and old users 1712 logEvent(String8::format("USER_SWITCH previous allowed users: %s , current allowed users: %s", 1713 oldUsers.string(), newUsers.string())); 1714} 1715 1716void CameraService::logDeviceRemoved(const char* cameraId, const char* reason) { 1717 // Log the device removal 1718 logEvent(String8::format("REMOVE device %s, reason: (%s)", cameraId, reason)); 1719} 1720 1721void CameraService::logDeviceAdded(const char* cameraId, const char* reason) { 1722 // Log the device removal 1723 logEvent(String8::format("ADD device %s, reason: (%s)", cameraId, reason)); 1724} 1725 1726void CameraService::logClientDied(int clientPid, const char* reason) { 1727 // Log the device removal 1728 logEvent(String8::format("DIED client(s) with PID %d, reason: (%s)", clientPid, reason)); 1729} 1730 1731void CameraService::logServiceError(const char* msg, int errorCode) { 1732 String8 curTime = getFormattedCurrentTime(); 1733 logEvent(String8::format("SERVICE ERROR: %s : %d (%s)", msg, errorCode, strerror(errorCode))); 1734} 1735 1736status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply, 1737 uint32_t flags) { 1738 1739 const int pid = getCallingPid(); 1740 const int selfPid = getpid(); 1741 1742 // Permission checks 1743 switch (code) { 1744 case BnCameraService::CONNECT: 1745 case BnCameraService::CONNECT_DEVICE: 1746 case BnCameraService::CONNECT_LEGACY: { 1747 if (pid != selfPid) { 1748 // we're called from a different process, do the real check 1749 if (!checkCallingPermission( 1750 String16("android.permission.CAMERA"))) { 1751 const int uid = getCallingUid(); 1752 ALOGE("Permission Denial: " 1753 "can't use the camera pid=%d, uid=%d", pid, uid); 1754 return PERMISSION_DENIED; 1755 } 1756 } 1757 break; 1758 } 1759 case BnCameraService::NOTIFY_SYSTEM_EVENT: { 1760 if (pid != selfPid) { 1761 // Ensure we're being called by system_server, or similar process with 1762 // permissions to notify the camera service about system events 1763 if (!checkCallingPermission( 1764 String16("android.permission.CAMERA_SEND_SYSTEM_EVENTS"))) { 1765 const int uid = getCallingUid(); 1766 ALOGE("Permission Denial: cannot send updates to camera service about system" 1767 " events from pid=%d, uid=%d", pid, uid); 1768 return PERMISSION_DENIED; 1769 } 1770 } 1771 break; 1772 } 1773 } 1774 1775 return BnCameraService::onTransact(code, data, reply, flags); 1776} 1777 1778// We share the media players for shutter and recording sound for all clients. 1779// A reference count is kept to determine when we will actually release the 1780// media players. 1781 1782MediaPlayer* CameraService::newMediaPlayer(const char *file) { 1783 MediaPlayer* mp = new MediaPlayer(); 1784 if (mp->setDataSource(NULL /* httpService */, file, NULL) == NO_ERROR) { 1785 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 1786 mp->prepare(); 1787 } else { 1788 ALOGE("Failed to load CameraService sounds: %s", file); 1789 return NULL; 1790 } 1791 return mp; 1792} 1793 1794void CameraService::loadSound() { 1795 Mutex::Autolock lock(mSoundLock); 1796 LOG1("CameraService::loadSound ref=%d", mSoundRef); 1797 if (mSoundRef++) return; 1798 1799 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 1800 mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 1801} 1802 1803void CameraService::releaseSound() { 1804 Mutex::Autolock lock(mSoundLock); 1805 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 1806 if (--mSoundRef) return; 1807 1808 for (int i = 0; i < NUM_SOUNDS; i++) { 1809 if (mSoundPlayer[i] != 0) { 1810 mSoundPlayer[i]->disconnect(); 1811 mSoundPlayer[i].clear(); 1812 } 1813 } 1814} 1815 1816void CameraService::playSound(sound_kind kind) { 1817 LOG1("playSound(%d)", kind); 1818 Mutex::Autolock lock(mSoundLock); 1819 sp<MediaPlayer> player = mSoundPlayer[kind]; 1820 if (player != 0) { 1821 player->seekTo(0); 1822 player->start(); 1823 } 1824} 1825 1826// ---------------------------------------------------------------------------- 1827 1828CameraService::Client::Client(const sp<CameraService>& cameraService, 1829 const sp<ICameraClient>& cameraClient, 1830 const String16& clientPackageName, 1831 int cameraId, int cameraFacing, 1832 int clientPid, uid_t clientUid, 1833 int servicePid) : 1834 CameraService::BasicClient(cameraService, 1835 IInterface::asBinder(cameraClient), 1836 clientPackageName, 1837 cameraId, cameraFacing, 1838 clientPid, clientUid, 1839 servicePid) 1840{ 1841 int callingPid = getCallingPid(); 1842 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 1843 1844 mRemoteCallback = cameraClient; 1845 1846 cameraService->loadSound(); 1847 1848 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 1849} 1850 1851// tear down the client 1852CameraService::Client::~Client() { 1853 ALOGV("~Client"); 1854 mDestructionStarted = true; 1855 1856 mCameraService->releaseSound(); 1857 // unconditionally disconnect. function is idempotent 1858 Client::disconnect(); 1859} 1860 1861CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 1862 const sp<IBinder>& remoteCallback, 1863 const String16& clientPackageName, 1864 int cameraId, int cameraFacing, 1865 int clientPid, uid_t clientUid, 1866 int servicePid): 1867 mClientPackageName(clientPackageName), mDisconnected(false) 1868{ 1869 mCameraService = cameraService; 1870 mRemoteBinder = remoteCallback; 1871 mCameraId = cameraId; 1872 mCameraFacing = cameraFacing; 1873 mClientPid = clientPid; 1874 mClientUid = clientUid; 1875 mServicePid = servicePid; 1876 mOpsActive = false; 1877 mDestructionStarted = false; 1878} 1879 1880CameraService::BasicClient::~BasicClient() { 1881 ALOGV("~BasicClient"); 1882 mDestructionStarted = true; 1883} 1884 1885void CameraService::BasicClient::disconnect() { 1886 if (mDisconnected) { 1887 ALOGE("%s: Disconnect called on already disconnected client for device %d", __FUNCTION__, 1888 mCameraId); 1889 return; 1890 } 1891 mDisconnected = true;; 1892 1893 mCameraService->removeByClient(this); 1894 mCameraService->logDisconnected(String8::format("%d", mCameraId), mClientPid, 1895 String8(mClientPackageName)); 1896 1897 sp<IBinder> remote = getRemote(); 1898 if (remote != nullptr) { 1899 remote->unlinkToDeath(mCameraService); 1900 } 1901 1902 finishCameraOps(); 1903 ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid); 1904 1905 // client shouldn't be able to call into us anymore 1906 mClientPid = 0; 1907} 1908 1909String16 CameraService::BasicClient::getPackageName() const { 1910 return mClientPackageName; 1911} 1912 1913 1914int CameraService::BasicClient::getClientPid() const { 1915 return mClientPid; 1916} 1917 1918uid_t CameraService::BasicClient::getClientUid() const { 1919 return mClientUid; 1920} 1921 1922bool CameraService::BasicClient::canCastToApiClient(apiLevel level) const { 1923 // Defaults to API2. 1924 return level == API_2; 1925} 1926 1927status_t CameraService::BasicClient::startCameraOps() { 1928 int32_t res; 1929 // Notify app ops that the camera is not available 1930 mOpsCallback = new OpsCallback(this); 1931 1932 { 1933 ALOGV("%s: Start camera ops, package name = %s, client UID = %d", 1934 __FUNCTION__, String8(mClientPackageName).string(), mClientUid); 1935 } 1936 1937 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 1938 mClientPackageName, mOpsCallback); 1939 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 1940 mClientUid, mClientPackageName); 1941 1942 if (res == AppOpsManager::MODE_ERRORED) { 1943 ALOGI("Camera %d: Access for \"%s\" has been revoked", 1944 mCameraId, String8(mClientPackageName).string()); 1945 return PERMISSION_DENIED; 1946 } 1947 1948 if (res == AppOpsManager::MODE_IGNORED) { 1949 ALOGI("Camera %d: Access for \"%s\" has been restricted", 1950 mCameraId, String8(mClientPackageName).string()); 1951 // Return the same error as for device policy manager rejection 1952 return -EACCES; 1953 } 1954 1955 mOpsActive = true; 1956 1957 // Transition device availability listeners from PRESENT -> NOT_AVAILABLE 1958 mCameraService->updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 1959 String8::format("%d", mCameraId)); 1960 1961 // Transition device state to OPEN 1962 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_OPEN, 1963 String8::format("%d", mCameraId)); 1964 1965 return OK; 1966} 1967 1968status_t CameraService::BasicClient::finishCameraOps() { 1969 // Check if startCameraOps succeeded, and if so, finish the camera op 1970 if (mOpsActive) { 1971 // Notify app ops that the camera is available again 1972 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 1973 mClientPackageName); 1974 mOpsActive = false; 1975 1976 auto rejected = {ICameraServiceListener::STATUS_NOT_PRESENT, 1977 ICameraServiceListener::STATUS_ENUMERATING}; 1978 1979 // Transition to PRESENT if the camera is not in either of the rejected states 1980 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, 1981 String8::format("%d", mCameraId), rejected); 1982 1983 // Transition device state to CLOSED 1984 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_CLOSED, 1985 String8::format("%d", mCameraId)); 1986 1987 // Notify flashlight that a camera device is closed. 1988 mCameraService->mFlashlight->deviceClosed( 1989 String8::format("%d", mCameraId)); 1990 } 1991 // Always stop watching, even if no camera op is active 1992 if (mOpsCallback != NULL) { 1993 mAppOpsManager.stopWatchingMode(mOpsCallback); 1994 } 1995 mOpsCallback.clear(); 1996 1997 return OK; 1998} 1999 2000void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 2001 String8 name(packageName); 2002 String8 myName(mClientPackageName); 2003 2004 if (op != AppOpsManager::OP_CAMERA) { 2005 ALOGW("Unexpected app ops notification received: %d", op); 2006 return; 2007 } 2008 2009 int32_t res; 2010 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 2011 mClientUid, mClientPackageName); 2012 ALOGV("checkOp returns: %d, %s ", res, 2013 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 2014 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 2015 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 2016 "UNKNOWN"); 2017 2018 if (res != AppOpsManager::MODE_ALLOWED) { 2019 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 2020 myName.string()); 2021 // Reset the client PID to allow server-initiated disconnect, 2022 // and to prevent further calls by client. 2023 mClientPid = getCallingPid(); 2024 CaptureResultExtras resultExtras; // a dummy result (invalid) 2025 notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE, resultExtras); 2026 disconnect(); 2027 } 2028} 2029 2030// ---------------------------------------------------------------------------- 2031 2032// Provide client strong pointer for callbacks. 2033sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) { 2034 String8 cameraId = String8::format("%d", (int)(intptr_t) user); 2035 auto clientDescriptor = gCameraService->mActiveClientManager.get(cameraId); 2036 if (clientDescriptor != nullptr) { 2037 return sp<Client>{ 2038 static_cast<Client*>(clientDescriptor->getValue().get())}; 2039 } 2040 return sp<Client>{nullptr}; 2041} 2042 2043void CameraService::Client::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 2044 const CaptureResultExtras& resultExtras) { 2045 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 2046} 2047 2048// NOTE: function is idempotent 2049void CameraService::Client::disconnect() { 2050 ALOGV("Client::disconnect"); 2051 BasicClient::disconnect(); 2052} 2053 2054bool CameraService::Client::canCastToApiClient(apiLevel level) const { 2055 return level == API_1; 2056} 2057 2058CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 2059 mClient(client) { 2060} 2061 2062void CameraService::Client::OpsCallback::opChanged(int32_t op, 2063 const String16& packageName) { 2064 sp<BasicClient> client = mClient.promote(); 2065 if (client != NULL) { 2066 client->opChanged(op, packageName); 2067 } 2068} 2069 2070// ---------------------------------------------------------------------------- 2071// CameraState 2072// ---------------------------------------------------------------------------- 2073 2074CameraService::CameraState::CameraState(const String8& id, int cost, 2075 const std::set<String8>& conflicting) : mId(id), 2076 mStatus(ICameraServiceListener::STATUS_PRESENT), mCost(cost), mConflicting(conflicting) {} 2077 2078CameraService::CameraState::~CameraState() {} 2079 2080ICameraServiceListener::Status CameraService::CameraState::getStatus() const { 2081 Mutex::Autolock lock(mStatusLock); 2082 return mStatus; 2083} 2084 2085CameraParameters CameraService::CameraState::getShimParams() const { 2086 return mShimParams; 2087} 2088 2089void CameraService::CameraState::setShimParams(const CameraParameters& params) { 2090 mShimParams = params; 2091} 2092 2093int CameraService::CameraState::getCost() const { 2094 return mCost; 2095} 2096 2097std::set<String8> CameraService::CameraState::getConflicting() const { 2098 return mConflicting; 2099} 2100 2101String8 CameraService::CameraState::getId() const { 2102 return mId; 2103} 2104 2105// ---------------------------------------------------------------------------- 2106// ClientEventListener 2107// ---------------------------------------------------------------------------- 2108 2109void CameraService::ClientEventListener::onClientAdded( 2110 const resource_policy::ClientDescriptor<String8, 2111 sp<CameraService::BasicClient>>& descriptor) { 2112 auto basicClient = descriptor.getValue(); 2113 if (basicClient.get() != nullptr) { 2114 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2115 notifier.noteStartCamera(descriptor.getKey(), 2116 static_cast<int>(basicClient->getClientUid())); 2117 } 2118} 2119 2120void CameraService::ClientEventListener::onClientRemoved( 2121 const resource_policy::ClientDescriptor<String8, 2122 sp<CameraService::BasicClient>>& descriptor) { 2123 auto basicClient = descriptor.getValue(); 2124 if (basicClient.get() != nullptr) { 2125 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2126 notifier.noteStopCamera(descriptor.getKey(), 2127 static_cast<int>(basicClient->getClientUid())); 2128 } 2129} 2130 2131 2132// ---------------------------------------------------------------------------- 2133// CameraClientManager 2134// ---------------------------------------------------------------------------- 2135 2136CameraService::CameraClientManager::CameraClientManager() { 2137 setListener(std::make_shared<ClientEventListener>()); 2138} 2139 2140CameraService::CameraClientManager::~CameraClientManager() {} 2141 2142sp<CameraService::BasicClient> CameraService::CameraClientManager::getCameraClient( 2143 const String8& id) const { 2144 auto descriptor = get(id); 2145 if (descriptor == nullptr) { 2146 return sp<BasicClient>{nullptr}; 2147 } 2148 return descriptor->getValue(); 2149} 2150 2151String8 CameraService::CameraClientManager::toString() const { 2152 auto all = getAll(); 2153 String8 ret("["); 2154 bool hasAny = false; 2155 for (auto& i : all) { 2156 hasAny = true; 2157 String8 key = i->getKey(); 2158 int32_t cost = i->getCost(); 2159 int32_t pid = i->getOwnerId(); 2160 int32_t priority = i->getPriority(); 2161 auto conflicting = i->getConflicting(); 2162 auto clientSp = i->getValue(); 2163 String8 packageName; 2164 userid_t clientUserId = 0; 2165 if (clientSp.get() != nullptr) { 2166 packageName = String8{clientSp->getPackageName()}; 2167 uid_t clientUid = clientSp->getClientUid(); 2168 clientUserId = multiuser_get_user_id(clientUid); 2169 } 2170 ret.appendFormat("\n(Camera ID: %s, Cost: %" PRId32 ", PID: %" PRId32 ", Priority: %" 2171 PRId32 ", ", key.string(), cost, pid, priority); 2172 2173 if (clientSp.get() != nullptr) { 2174 ret.appendFormat("User Id: %d, ", clientUserId); 2175 } 2176 if (packageName.size() != 0) { 2177 ret.appendFormat("Client Package Name: %s", packageName.string()); 2178 } 2179 2180 ret.append(", Conflicting Client Devices: {"); 2181 for (auto& j : conflicting) { 2182 ret.appendFormat("%s, ", j.string()); 2183 } 2184 ret.append("})"); 2185 } 2186 if (hasAny) ret.append("\n"); 2187 ret.append("]\n"); 2188 return ret; 2189} 2190 2191CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2192 const String8& key, const sp<BasicClient>& value, int32_t cost, 2193 const std::set<String8>& conflictingKeys, int32_t priority, int32_t ownerId) { 2194 2195 return std::make_shared<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>( 2196 key, value, cost, conflictingKeys, priority, ownerId); 2197} 2198 2199CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2200 const sp<BasicClient>& value, const CameraService::DescriptorPtr& partial) { 2201 return makeClientDescriptor(partial->getKey(), value, partial->getCost(), 2202 partial->getConflicting(), partial->getPriority(), partial->getOwnerId()); 2203} 2204 2205// ---------------------------------------------------------------------------- 2206 2207static const int kDumpLockRetries = 50; 2208static const int kDumpLockSleep = 60000; 2209 2210static bool tryLock(Mutex& mutex) 2211{ 2212 bool locked = false; 2213 for (int i = 0; i < kDumpLockRetries; ++i) { 2214 if (mutex.tryLock() == NO_ERROR) { 2215 locked = true; 2216 break; 2217 } 2218 usleep(kDumpLockSleep); 2219 } 2220 return locked; 2221} 2222 2223status_t CameraService::dump(int fd, const Vector<String16>& args) { 2224 String8 result("Dump of the Camera Service:\n"); 2225 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 2226 result.appendFormat("Permission Denial: " 2227 "can't dump CameraService from pid=%d, uid=%d\n", 2228 getCallingPid(), 2229 getCallingUid()); 2230 write(fd, result.string(), result.size()); 2231 } else { 2232 bool locked = tryLock(mServiceLock); 2233 // failed to lock - CameraService is probably deadlocked 2234 if (!locked) { 2235 result.append("CameraService may be deadlocked\n"); 2236 write(fd, result.string(), result.size()); 2237 } 2238 2239 bool hasClient = false; 2240 if (!mModule) { 2241 result = String8::format("No camera module available!\n"); 2242 write(fd, result.string(), result.size()); 2243 2244 // Dump event log for error information 2245 dumpEventLog(fd); 2246 2247 if (locked) mServiceLock.unlock(); 2248 return NO_ERROR; 2249 } 2250 2251 result = String8::format("Camera module HAL API version: 0x%x\n", mModule->getHalApiVersion()); 2252 result.appendFormat("Camera module API version: 0x%x\n", mModule->getModuleApiVersion()); 2253 result.appendFormat("Camera module name: %s\n", mModule->getModuleName()); 2254 result.appendFormat("Camera module author: %s\n", mModule->getModuleAuthor()); 2255 result.appendFormat("Number of camera devices: %d\n", mNumberOfCameras); 2256 String8 activeClientString = mActiveClientManager.toString(); 2257 result.appendFormat("Active Camera Clients:\n%s", activeClientString.string()); 2258 result.appendFormat("Allowed users:\n%s\n", toString(mAllowedUsers).string()); 2259 2260 sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 2261 if (desc == NULL) { 2262 result.appendFormat("Vendor tags left unimplemented.\n"); 2263 } else { 2264 result.appendFormat("Vendor tag definitions:\n"); 2265 } 2266 2267 write(fd, result.string(), result.size()); 2268 2269 if (desc != NULL) { 2270 desc->dump(fd, /*verbosity*/2, /*indentation*/4); 2271 } 2272 2273 dumpEventLog(fd); 2274 2275 bool stateLocked = tryLock(mCameraStatesLock); 2276 if (!stateLocked) { 2277 result = String8::format("CameraStates in use, may be deadlocked\n"); 2278 write(fd, result.string(), result.size()); 2279 } 2280 2281 for (auto& state : mCameraStates) { 2282 String8 cameraId = state.first; 2283 result = String8::format("Camera %s information:\n", cameraId.string()); 2284 camera_info info; 2285 2286 // TODO: Change getCameraInfo + HAL to use String cameraIds 2287 status_t rc = mModule->getCameraInfo(cameraIdToInt(cameraId), &info); 2288 if (rc != OK) { 2289 result.appendFormat(" Error reading static information!\n"); 2290 write(fd, result.string(), result.size()); 2291 } else { 2292 result.appendFormat(" Facing: %s\n", 2293 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 2294 result.appendFormat(" Orientation: %d\n", info.orientation); 2295 int deviceVersion; 2296 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0) { 2297 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 2298 } else { 2299 deviceVersion = info.device_version; 2300 } 2301 2302 auto conflicting = state.second->getConflicting(); 2303 result.appendFormat(" Resource Cost: %d\n", state.second->getCost()); 2304 result.appendFormat(" Conflicting Devices:"); 2305 for (auto& id : conflicting) { 2306 result.appendFormat(" %s", cameraId.string()); 2307 } 2308 if (conflicting.size() == 0) { 2309 result.appendFormat(" NONE"); 2310 } 2311 result.appendFormat("\n"); 2312 2313 result.appendFormat(" Device version: %#x\n", deviceVersion); 2314 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { 2315 result.appendFormat(" Device static metadata:\n"); 2316 write(fd, result.string(), result.size()); 2317 dump_indented_camera_metadata(info.static_camera_characteristics, 2318 fd, /*verbosity*/2, /*indentation*/4); 2319 } else { 2320 write(fd, result.string(), result.size()); 2321 } 2322 2323 CameraParameters p = state.second->getShimParams(); 2324 if (!p.isEmpty()) { 2325 result = String8::format(" Camera1 API shim is using parameters:\n "); 2326 write(fd, result.string(), result.size()); 2327 p.dump(fd, args); 2328 } 2329 } 2330 2331 auto clientDescriptor = mActiveClientManager.get(cameraId); 2332 if (clientDescriptor == nullptr) { 2333 result = String8::format(" Device %s is closed, no client instance\n", 2334 cameraId.string()); 2335 write(fd, result.string(), result.size()); 2336 continue; 2337 } 2338 hasClient = true; 2339 result = String8::format(" Device %s is open. Client instance dump:\n\n", 2340 cameraId.string()); 2341 result.appendFormat("Client priority level: %d\n", clientDescriptor->getPriority()); 2342 result.appendFormat("Client PID: %d\n", clientDescriptor->getOwnerId()); 2343 2344 auto client = clientDescriptor->getValue(); 2345 result.appendFormat("Client package: %s\n", 2346 String8(client->getPackageName()).string()); 2347 write(fd, result.string(), result.size()); 2348 2349 client->dump(fd, args); 2350 } 2351 2352 if (stateLocked) mCameraStatesLock.unlock(); 2353 2354 if (!hasClient) { 2355 result = String8::format("\nNo active camera clients yet.\n"); 2356 write(fd, result.string(), result.size()); 2357 } 2358 2359 if (locked) mServiceLock.unlock(); 2360 2361 // Dump camera traces if there were any 2362 write(fd, "\n", 1); 2363 camera3::CameraTraces::dump(fd, args); 2364 2365 // change logging level 2366 int n = args.size(); 2367 for (int i = 0; i + 1 < n; i++) { 2368 String16 verboseOption("-v"); 2369 if (args[i] == verboseOption) { 2370 String8 levelStr(args[i+1]); 2371 int level = atoi(levelStr.string()); 2372 result = String8::format("\nSetting log level to %d.\n", level); 2373 setLogLevel(level); 2374 write(fd, result.string(), result.size()); 2375 } 2376 } 2377 } 2378 return NO_ERROR; 2379} 2380 2381void CameraService::dumpEventLog(int fd) { 2382 String8 result = String8("\nPrior client events (most recent at top):\n"); 2383 2384 Mutex::Autolock l(mLogLock); 2385 for (const auto& msg : mEventLog) { 2386 result.appendFormat(" %s\n", msg.string()); 2387 } 2388 2389 if (mEventLog.size() == DEFAULT_EVENT_LOG_LENGTH) { 2390 result.append(" ...\n"); 2391 } else if (mEventLog.size() == 0) { 2392 result.append(" [no events yet]\n"); 2393 } 2394 result.append("\n"); 2395 2396 write(fd, result.string(), result.size()); 2397} 2398 2399void CameraService::handleTorchClientBinderDied(const wp<IBinder> &who) { 2400 Mutex::Autolock al(mTorchClientMapMutex); 2401 for (size_t i = 0; i < mTorchClientMap.size(); i++) { 2402 if (mTorchClientMap[i] == who) { 2403 // turn off the torch mode that was turned on by dead client 2404 String8 cameraId = mTorchClientMap.keyAt(i); 2405 status_t res = mFlashlight->setTorchMode(cameraId, false); 2406 if (res) { 2407 ALOGE("%s: torch client died but couldn't turn off torch: " 2408 "%s (%d)", __FUNCTION__, strerror(-res), res); 2409 return; 2410 } 2411 mTorchClientMap.removeItemsAt(i); 2412 break; 2413 } 2414 } 2415} 2416 2417/*virtual*/void CameraService::binderDied(const wp<IBinder> &who) { 2418 2419 /** 2420 * While tempting to promote the wp<IBinder> into a sp, it's actually not supported by the 2421 * binder driver 2422 */ 2423 2424 logClientDied(getCallingPid(), String8("Binder died unexpectedly")); 2425 2426 // check torch client 2427 handleTorchClientBinderDied(who); 2428 2429 // check camera device client 2430 if(!evictClientIdByRemote(who)) { 2431 ALOGV("%s: Java client's binder death already cleaned up (normal case)", __FUNCTION__); 2432 return; 2433 } 2434 2435 ALOGE("%s: Java client's binder died, removing it from the list of active clients", 2436 __FUNCTION__); 2437} 2438 2439void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId) { 2440 updateStatus(status, cameraId, {}); 2441} 2442 2443void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId, 2444 std::initializer_list<ICameraServiceListener::Status> rejectSourceStates) { 2445 // Do not lock mServiceLock here or can get into a deadlock from 2446 // connect() -> disconnect -> updateStatus 2447 2448 auto state = getCameraState(cameraId); 2449 2450 if (state == nullptr) { 2451 ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__, 2452 cameraId.string()); 2453 return; 2454 } 2455 2456 // Update the status for this camera state, then send the onStatusChangedCallbacks to each 2457 // of the listeners with both the mStatusStatus and mStatusListenerLock held 2458 state->updateStatus(status, cameraId, rejectSourceStates, [this] 2459 (const String8& cameraId, ICameraServiceListener::Status status) { 2460 2461 if (status != ICameraServiceListener::STATUS_ENUMERATING) { 2462 // Update torch status if it has a flash unit. 2463 Mutex::Autolock al(mTorchStatusMutex); 2464 ICameraServiceListener::TorchStatus torchStatus; 2465 if (getTorchStatusLocked(cameraId, &torchStatus) != 2466 NAME_NOT_FOUND) { 2467 ICameraServiceListener::TorchStatus newTorchStatus = 2468 status == ICameraServiceListener::STATUS_PRESENT ? 2469 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF : 2470 ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 2471 if (torchStatus != newTorchStatus) { 2472 onTorchStatusChangedLocked(cameraId, newTorchStatus); 2473 } 2474 } 2475 } 2476 2477 Mutex::Autolock lock(mStatusListenerLock); 2478 2479 for (auto& listener : mListenerList) { 2480 // TODO: Refactor status listeners to use strings for Camera IDs and remove this. 2481 int id = cameraIdToInt(cameraId); 2482 if (id != -1) listener->onStatusChanged(status, id); 2483 } 2484 }); 2485} 2486 2487void CameraService::updateProxyDeviceState(ICameraServiceProxy::CameraState newState, 2488 const String8& cameraId) { 2489 sp<ICameraServiceProxy> proxyBinder = getCameraServiceProxy(); 2490 if (proxyBinder == nullptr) return; 2491 String16 id(cameraId); 2492 proxyBinder->notifyCameraState(id, newState); 2493} 2494 2495status_t CameraService::getTorchStatusLocked( 2496 const String8& cameraId, 2497 ICameraServiceListener::TorchStatus *status) const { 2498 if (!status) { 2499 return BAD_VALUE; 2500 } 2501 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2502 if (index == NAME_NOT_FOUND) { 2503 // invalid camera ID or the camera doesn't have a flash unit 2504 return NAME_NOT_FOUND; 2505 } 2506 2507 *status = mTorchStatusMap.valueAt(index); 2508 return OK; 2509} 2510 2511status_t CameraService::setTorchStatusLocked(const String8& cameraId, 2512 ICameraServiceListener::TorchStatus status) { 2513 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2514 if (index == NAME_NOT_FOUND) { 2515 return BAD_VALUE; 2516 } 2517 ICameraServiceListener::TorchStatus& item = 2518 mTorchStatusMap.editValueAt(index); 2519 item = status; 2520 2521 return OK; 2522} 2523 2524}; // namespace android 2525