CameraService.cpp revision 311f99eade1222575bc65a2fcbd9f9a5a40d2024
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 <android/hardware/ICamera.h> 32#include <android/hardware/ICameraClient.h> 33 34#include <binder/AppOpsManager.h> 35#include <binder/IPCThreadState.h> 36#include <binder/IServiceManager.h> 37#include <binder/MemoryBase.h> 38#include <binder/MemoryHeapBase.h> 39#include <binder/ProcessInfoService.h> 40#include <cutils/atomic.h> 41#include <cutils/properties.h> 42#include <gui/Surface.h> 43#include <hardware/hardware.h> 44#include <memunreachable/memunreachable.h> 45#include <media/AudioSystem.h> 46#include <media/IMediaHTTPService.h> 47#include <media/mediaplayer.h> 48#include <mediautils/BatteryNotifier.h> 49#include <utils/Errors.h> 50#include <utils/Log.h> 51#include <utils/String16.h> 52#include <utils/Trace.h> 53#include <private/android_filesystem_config.h> 54#include <system/camera_vendor_tags.h> 55#include <system/camera_metadata.h> 56#include <system/camera.h> 57 58#include "CameraService.h" 59#include "api1/CameraClient.h" 60#include "api1/Camera2Client.h" 61#include "api2/CameraDeviceClient.h" 62#include "utils/CameraTraces.h" 63 64namespace { 65 const char* kPermissionServiceName = "permission"; 66}; // namespace anonymous 67 68namespace android { 69 70using binder::Status; 71using namespace hardware; 72 73// ---------------------------------------------------------------------------- 74// Logging support -- this is for debugging only 75// Use "adb shell dumpsys media.camera -v 1" to change it. 76volatile int32_t gLogLevel = 0; 77 78#define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__); 79#define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__); 80 81static void setLogLevel(int level) { 82 android_atomic_write(level, &gLogLevel); 83} 84 85// Convenience methods for constructing binder::Status objects for error returns 86 87#define STATUS_ERROR(errorCode, errorString) \ 88 binder::Status::fromServiceSpecificError(errorCode, \ 89 String8::format("%s:%d: %s", __FUNCTION__, __LINE__, errorString)) 90 91#define STATUS_ERROR_FMT(errorCode, errorString, ...) \ 92 binder::Status::fromServiceSpecificError(errorCode, \ 93 String8::format("%s:%d: " errorString, __FUNCTION__, __LINE__, \ 94 __VA_ARGS__)) 95 96// ---------------------------------------------------------------------------- 97 98extern "C" { 99static void camera_device_status_change( 100 const struct camera_module_callbacks* callbacks, 101 int camera_id, 102 int new_status) { 103 sp<CameraService> cs = const_cast<CameraService*>( 104 static_cast<const CameraService*>(callbacks)); 105 106 cs->onDeviceStatusChanged(camera_id, 107 static_cast<camera_device_status_t>(new_status)); 108} 109 110static void torch_mode_status_change( 111 const struct camera_module_callbacks* callbacks, 112 const char* camera_id, 113 int new_status) { 114 if (!callbacks || !camera_id) { 115 ALOGE("%s invalid parameters. callbacks %p, camera_id %p", __FUNCTION__, 116 callbacks, camera_id); 117 } 118 sp<CameraService> cs = const_cast<CameraService*>( 119 static_cast<const CameraService*>(callbacks)); 120 121 int32_t status; 122 switch (new_status) { 123 case TORCH_MODE_STATUS_NOT_AVAILABLE: 124 status = ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 125 break; 126 case TORCH_MODE_STATUS_AVAILABLE_OFF: 127 status = ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF; 128 break; 129 case TORCH_MODE_STATUS_AVAILABLE_ON: 130 status = ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON; 131 break; 132 default: 133 ALOGE("Unknown torch status %d", new_status); 134 return; 135 } 136 137 cs->onTorchStatusChanged( 138 String8(camera_id), 139 status); 140} 141} // extern "C" 142 143// ---------------------------------------------------------------------------- 144 145// This is ugly and only safe if we never re-create the CameraService, but 146// should be ok for now. 147static CameraService *gCameraService; 148 149CameraService::CameraService() : 150 mEventLog(DEFAULT_EVENT_LOG_LENGTH), 151 mNumberOfCameras(0), mNumberOfNormalCameras(0), 152 mSoundRef(0), mModule(nullptr) { 153 ALOGI("CameraService started (pid=%d)", getpid()); 154 gCameraService = this; 155 156 this->camera_device_status_change = android::camera_device_status_change; 157 this->torch_mode_status_change = android::torch_mode_status_change; 158 159 mServiceLockWrapper = std::make_shared<WaitableMutexWrapper>(&mServiceLock); 160} 161 162void CameraService::onFirstRef() 163{ 164 ALOGI("CameraService process starting"); 165 166 BnCameraService::onFirstRef(); 167 168 // Update battery life tracking if service is restarting 169 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 170 notifier.noteResetCamera(); 171 notifier.noteResetFlashlight(); 172 173 camera_module_t *rawModule; 174 int err = hw_get_module(CAMERA_HARDWARE_MODULE_ID, 175 (const hw_module_t **)&rawModule); 176 if (err < 0) { 177 ALOGE("Could not load camera HAL module: %d (%s)", err, strerror(-err)); 178 logServiceError("Could not load camera HAL module", err); 179 return; 180 } 181 182 mModule = new CameraModule(rawModule); 183 err = mModule->init(); 184 if (err != OK) { 185 ALOGE("Could not initialize camera HAL module: %d (%s)", err, 186 strerror(-err)); 187 logServiceError("Could not initialize camera HAL module", err); 188 189 delete mModule; 190 mModule = nullptr; 191 return; 192 } 193 ALOGI("Loaded \"%s\" camera module", mModule->getModuleName()); 194 195 mNumberOfCameras = mModule->getNumberOfCameras(); 196 mNumberOfNormalCameras = mNumberOfCameras; 197 198 // Setup vendor tags before we call get_camera_info the first time 199 // because HAL might need to setup static vendor keys in get_camera_info 200 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 201 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_2) { 202 setUpVendorTags(); 203 } 204 205 mFlashlight = new CameraFlashlight(*mModule, *this); 206 status_t res = mFlashlight->findFlashUnits(); 207 if (res) { 208 // impossible because we haven't open any camera devices. 209 ALOGE("Failed to find flash units."); 210 } 211 212 int latestStrangeCameraId = INT_MAX; 213 for (int i = 0; i < mNumberOfCameras; i++) { 214 String8 cameraId = String8::format("%d", i); 215 216 // Get camera info 217 218 struct camera_info info; 219 bool haveInfo = true; 220 status_t rc = mModule->getCameraInfo(i, &info); 221 if (rc != NO_ERROR) { 222 ALOGE("%s: Received error loading camera info for device %d, cost and" 223 " conflicting devices fields set to defaults for this device.", 224 __FUNCTION__, i); 225 haveInfo = false; 226 } 227 228 // Check for backwards-compatibility support 229 if (haveInfo) { 230 if (checkCameraCapabilities(i, info, &latestStrangeCameraId) != OK) { 231 delete mModule; 232 mModule = nullptr; 233 return; 234 } 235 } 236 237 // Defaults to use for cost and conflicting devices 238 int cost = 100; 239 char** conflicting_devices = nullptr; 240 size_t conflicting_devices_length = 0; 241 242 // If using post-2.4 module version, query the cost + conflicting devices from the HAL 243 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_4 && haveInfo) { 244 cost = info.resource_cost; 245 conflicting_devices = info.conflicting_devices; 246 conflicting_devices_length = info.conflicting_devices_length; 247 } 248 249 std::set<String8> conflicting; 250 for (size_t i = 0; i < conflicting_devices_length; i++) { 251 conflicting.emplace(String8(conflicting_devices[i])); 252 } 253 254 // Initialize state for each camera device 255 { 256 Mutex::Autolock lock(mCameraStatesLock); 257 mCameraStates.emplace(cameraId, std::make_shared<CameraState>(cameraId, cost, 258 conflicting)); 259 } 260 261 if (mFlashlight->hasFlashUnit(cameraId)) { 262 mTorchStatusMap.add(cameraId, 263 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF); 264 } 265 } 266 267 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_1) { 268 mModule->setCallbacks(this); 269 } 270 271 CameraService::pingCameraServiceProxy(); 272} 273 274sp<ICameraServiceProxy> CameraService::getCameraServiceProxy() { 275 sp<ICameraServiceProxy> proxyBinder = nullptr; 276#ifndef __BRILLO__ 277 sp<IServiceManager> sm = defaultServiceManager(); 278 sp<IBinder> binder = sm->getService(String16("media.camera.proxy")); 279 if (binder != nullptr) { 280 proxyBinder = interface_cast<ICameraServiceProxy>(binder); 281 } 282#endif 283 return proxyBinder; 284} 285 286void CameraService::pingCameraServiceProxy() { 287 sp<ICameraServiceProxy> proxyBinder = getCameraServiceProxy(); 288 if (proxyBinder == nullptr) return; 289 proxyBinder->pingForUserUpdate(); 290} 291 292CameraService::~CameraService() { 293 if (mModule) { 294 delete mModule; 295 mModule = nullptr; 296 } 297 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 298 gCameraService = nullptr; 299} 300 301void CameraService::onDeviceStatusChanged(int cameraId, 302 camera_device_status_t newStatus) { 303 ALOGI("%s: Status changed for cameraId=%d, newStatus=%d", __FUNCTION__, 304 cameraId, newStatus); 305 306 String8 id = String8::format("%d", cameraId); 307 std::shared_ptr<CameraState> state = getCameraState(id); 308 309 if (state == nullptr) { 310 ALOGE("%s: Bad camera ID %d", __FUNCTION__, cameraId); 311 return; 312 } 313 314 int32_t oldStatus = state->getStatus(); 315 316 if (oldStatus == static_cast<int32_t>(newStatus)) { 317 ALOGE("%s: State transition to the same status %#x not allowed", __FUNCTION__, newStatus); 318 return; 319 } 320 321 if (newStatus == CAMERA_DEVICE_STATUS_NOT_PRESENT) { 322 logDeviceRemoved(id, String8::format("Device status changed from %d to %d", oldStatus, 323 newStatus)); 324 sp<BasicClient> clientToDisconnect; 325 { 326 // Don't do this in updateStatus to avoid deadlock over mServiceLock 327 Mutex::Autolock lock(mServiceLock); 328 329 // Set the device status to NOT_PRESENT, clients will no longer be able to connect 330 // to this device until the status changes 331 updateStatus(ICameraServiceListener::STATUS_NOT_PRESENT, id); 332 333 // Remove cached shim parameters 334 state->setShimParams(CameraParameters()); 335 336 // Remove the client from the list of active clients 337 clientToDisconnect = removeClientLocked(id); 338 339 // Notify the client of disconnection 340 clientToDisconnect->notifyError( 341 hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 342 CaptureResultExtras{}); 343 } 344 345 ALOGI("%s: Client for camera ID %s evicted due to device status change from HAL", 346 __FUNCTION__, id.string()); 347 348 // Disconnect client 349 if (clientToDisconnect.get() != nullptr) { 350 // Ensure not in binder RPC so client disconnect PID checks work correctly 351 LOG_ALWAYS_FATAL_IF(getCallingPid() != getpid(), 352 "onDeviceStatusChanged must be called from the camera service process!"); 353 clientToDisconnect->disconnect(); 354 } 355 356 } else { 357 if (oldStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { 358 logDeviceAdded(id, String8::format("Device status changed from %d to %d", oldStatus, 359 newStatus)); 360 } 361 updateStatus(static_cast<int32_t>(newStatus), id); 362 } 363 364} 365 366void CameraService::onTorchStatusChanged(const String8& cameraId, 367 int32_t newStatus) { 368 Mutex::Autolock al(mTorchStatusMutex); 369 onTorchStatusChangedLocked(cameraId, newStatus); 370} 371 372void CameraService::onTorchStatusChangedLocked(const String8& cameraId, 373 int32_t newStatus) { 374 ALOGI("%s: Torch status changed for cameraId=%s, newStatus=%d", 375 __FUNCTION__, cameraId.string(), newStatus); 376 377 int32_t status; 378 status_t res = getTorchStatusLocked(cameraId, &status); 379 if (res) { 380 ALOGE("%s: cannot get torch status of camera %s: %s (%d)", 381 __FUNCTION__, cameraId.string(), strerror(-res), res); 382 return; 383 } 384 if (status == newStatus) { 385 return; 386 } 387 388 res = setTorchStatusLocked(cameraId, newStatus); 389 if (res) { 390 ALOGE("%s: Failed to set the torch status to %d: %s (%d)", __FUNCTION__, 391 (uint32_t)newStatus, strerror(-res), res); 392 return; 393 } 394 395 { 396 // Update battery life logging for flashlight 397 Mutex::Autolock al(mTorchUidMapMutex); 398 auto iter = mTorchUidMap.find(cameraId); 399 if (iter != mTorchUidMap.end()) { 400 int oldUid = iter->second.second; 401 int newUid = iter->second.first; 402 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 403 if (oldUid != newUid) { 404 // If the UID has changed, log the status and update current UID in mTorchUidMap 405 if (status == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 406 notifier.noteFlashlightOff(cameraId, oldUid); 407 } 408 if (newStatus == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 409 notifier.noteFlashlightOn(cameraId, newUid); 410 } 411 iter->second.second = newUid; 412 } else { 413 // If the UID has not changed, log the status 414 if (newStatus == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 415 notifier.noteFlashlightOn(cameraId, oldUid); 416 } else { 417 notifier.noteFlashlightOff(cameraId, oldUid); 418 } 419 } 420 } 421 } 422 423 { 424 Mutex::Autolock lock(mStatusListenerLock); 425 for (auto& i : mListenerList) { 426 i->onTorchStatusChanged(newStatus, String16{cameraId}); 427 } 428 } 429} 430 431Status CameraService::getNumberOfCameras(int32_t type, int32_t* numCameras) { 432 ATRACE_CALL(); 433 switch (type) { 434 case CAMERA_TYPE_BACKWARD_COMPATIBLE: 435 *numCameras = mNumberOfNormalCameras; 436 break; 437 case CAMERA_TYPE_ALL: 438 *numCameras = mNumberOfCameras; 439 break; 440 default: 441 ALOGW("%s: Unknown camera type %d", 442 __FUNCTION__, type); 443 return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, 444 "Unknown camera type %d", type); 445 } 446 return Status::ok(); 447} 448 449Status CameraService::getCameraInfo(int cameraId, 450 CameraInfo* cameraInfo) { 451 ATRACE_CALL(); 452 if (!mModule) { 453 return STATUS_ERROR(ERROR_DISCONNECTED, 454 "Camera subsystem is not available"); 455 } 456 457 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 458 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, 459 "CameraId is not valid"); 460 } 461 462 struct camera_info info; 463 Status rc = filterGetInfoErrorCode( 464 mModule->getCameraInfo(cameraId, &info)); 465 466 if (rc.isOk()) { 467 cameraInfo->facing = info.facing; 468 cameraInfo->orientation = info.orientation; 469 // CameraInfo is for android.hardware.Camera which does not 470 // support external camera facing. The closest approximation would be 471 // front camera. 472 if (cameraInfo->orientation == CAMERA_FACING_EXTERNAL) { 473 cameraInfo->orientation = CAMERA_FACING_FRONT; 474 } 475 } 476 return rc; 477} 478 479int CameraService::cameraIdToInt(const String8& cameraId) { 480 errno = 0; 481 size_t pos = 0; 482 int ret = stoi(std::string{cameraId.string()}, &pos); 483 if (errno != 0 || pos != cameraId.size()) { 484 return -1; 485 } 486 return ret; 487} 488 489Status CameraService::generateShimMetadata(int cameraId, /*out*/CameraMetadata* cameraInfo) { 490 ATRACE_CALL(); 491 492 Status ret = Status::ok(); 493 494 struct CameraInfo info; 495 if (!(ret = getCameraInfo(cameraId, &info)).isOk()) { 496 return ret; 497 } 498 499 CameraMetadata shimInfo; 500 int32_t orientation = static_cast<int32_t>(info.orientation); 501 status_t rc; 502 if ((rc = shimInfo.update(ANDROID_SENSOR_ORIENTATION, &orientation, 1)) != OK) { 503 return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, 504 "Error updating metadata: %d (%s)", rc, strerror(-rc)); 505 } 506 507 uint8_t facing = (info.facing == CAMERA_FACING_FRONT) ? 508 ANDROID_LENS_FACING_FRONT : ANDROID_LENS_FACING_BACK; 509 if ((rc = shimInfo.update(ANDROID_LENS_FACING, &facing, 1)) != OK) { 510 return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, 511 "Error updating metadata: %d (%s)", rc, strerror(-rc)); 512 } 513 514 CameraParameters shimParams; 515 if (!(ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)).isOk()) { 516 // Error logged by callee 517 return ret; 518 } 519 520 Vector<Size> sizes; 521 Vector<Size> jpegSizes; 522 Vector<int32_t> formats; 523 { 524 shimParams.getSupportedPreviewSizes(/*out*/sizes); 525 shimParams.getSupportedPreviewFormats(/*out*/formats); 526 shimParams.getSupportedPictureSizes(/*out*/jpegSizes); 527 } 528 529 // Always include IMPLEMENTATION_DEFINED 530 formats.add(HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED); 531 532 const size_t INTS_PER_CONFIG = 4; 533 534 // Build available stream configurations metadata 535 size_t streamConfigSize = (sizes.size() * formats.size() + jpegSizes.size()) * INTS_PER_CONFIG; 536 537 Vector<int32_t> streamConfigs; 538 streamConfigs.setCapacity(streamConfigSize); 539 540 for (size_t i = 0; i < formats.size(); ++i) { 541 for (size_t j = 0; j < sizes.size(); ++j) { 542 streamConfigs.add(formats[i]); 543 streamConfigs.add(sizes[j].width); 544 streamConfigs.add(sizes[j].height); 545 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 546 } 547 } 548 549 for (size_t i = 0; i < jpegSizes.size(); ++i) { 550 streamConfigs.add(HAL_PIXEL_FORMAT_BLOB); 551 streamConfigs.add(jpegSizes[i].width); 552 streamConfigs.add(jpegSizes[i].height); 553 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 554 } 555 556 if ((rc = shimInfo.update(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS, 557 streamConfigs.array(), streamConfigSize)) != OK) { 558 return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, 559 "Error updating metadata: %d (%s)", rc, strerror(-rc)); 560 } 561 562 int64_t fakeMinFrames[0]; 563 // TODO: Fixme, don't fake min frame durations. 564 if ((rc = shimInfo.update(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS, 565 fakeMinFrames, 0)) != OK) { 566 return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, 567 "Error updating metadata: %d (%s)", rc, strerror(-rc)); 568 } 569 570 int64_t fakeStalls[0]; 571 // TODO: Fixme, don't fake stall durations. 572 if ((rc = shimInfo.update(ANDROID_SCALER_AVAILABLE_STALL_DURATIONS, 573 fakeStalls, 0)) != OK) { 574 return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, 575 "Error updating metadata: %d (%s)", rc, strerror(-rc)); 576 } 577 578 *cameraInfo = shimInfo; 579 return ret; 580} 581 582Status CameraService::getCameraCharacteristics(int cameraId, 583 CameraMetadata* cameraInfo) { 584 ATRACE_CALL(); 585 if (!cameraInfo) { 586 ALOGE("%s: cameraInfo is NULL", __FUNCTION__); 587 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "cameraInfo is NULL"); 588 } 589 590 if (!mModule) { 591 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 592 return STATUS_ERROR(ERROR_DISCONNECTED, 593 "Camera subsystem is not available");; 594 } 595 596 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 597 ALOGE("%s: Invalid camera id: %d", __FUNCTION__, cameraId); 598 return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, 599 "Invalid camera id: %d", cameraId); 600 } 601 602 int facing; 603 Status ret; 604 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0 || 605 getDeviceVersion(cameraId, &facing) < CAMERA_DEVICE_API_VERSION_3_0) { 606 /** 607 * Backwards compatibility mode for old HALs: 608 * - Convert CameraInfo into static CameraMetadata properties. 609 * - Retrieve cached CameraParameters for this camera. If none exist, 610 * attempt to open CameraClient and retrieve the CameraParameters. 611 * - Convert cached CameraParameters into static CameraMetadata 612 * properties. 613 */ 614 ALOGI("%s: Switching to HAL1 shim implementation...", __FUNCTION__); 615 616 ret = generateShimMetadata(cameraId, cameraInfo); 617 } else { 618 /** 619 * Normal HAL 2.1+ codepath. 620 */ 621 struct camera_info info; 622 ret = filterGetInfoErrorCode(mModule->getCameraInfo(cameraId, &info)); 623 if (ret.isOk()) { 624 *cameraInfo = info.static_camera_characteristics; 625 } 626 } 627 628 return ret; 629} 630 631int CameraService::getCallingPid() { 632 return IPCThreadState::self()->getCallingPid(); 633} 634 635int CameraService::getCallingUid() { 636 return IPCThreadState::self()->getCallingUid(); 637} 638 639String8 CameraService::getFormattedCurrentTime() { 640 time_t now = time(nullptr); 641 char formattedTime[64]; 642 strftime(formattedTime, sizeof(formattedTime), "%m-%d %H:%M:%S", localtime(&now)); 643 return String8(formattedTime); 644} 645 646int CameraService::getCameraPriorityFromProcState(int procState) { 647 // Find the priority for the camera usage based on the process state. Higher priority clients 648 // win for evictions. 649 if (procState < 0) { 650 ALOGE("%s: Received invalid process state %d from ActivityManagerService!", __FUNCTION__, 651 procState); 652 return -1; 653 } 654 // Treat sleeping TOP processes the same as regular TOP processes, for 655 // access priority. This is important for lock-screen camera launch scenarios 656 if (procState == PROCESS_STATE_TOP_SLEEPING) { 657 procState = PROCESS_STATE_TOP; 658 } 659 return INT_MAX - procState; 660} 661 662Status CameraService::getCameraVendorTagDescriptor( 663 /*out*/ 664 hardware::camera2::params::VendorTagDescriptor* desc) { 665 ATRACE_CALL(); 666 if (!mModule) { 667 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 668 return STATUS_ERROR(ERROR_DISCONNECTED, "Camera subsystem not available"); 669 } 670 sp<VendorTagDescriptor> globalDescriptor = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 671 if (globalDescriptor != nullptr) { 672 *desc = *(globalDescriptor.get()); 673 } 674 return Status::ok(); 675} 676 677int CameraService::getDeviceVersion(int cameraId, int* facing) { 678 ATRACE_CALL(); 679 struct camera_info info; 680 if (mModule->getCameraInfo(cameraId, &info) != OK) { 681 return -1; 682 } 683 684 int deviceVersion; 685 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) { 686 deviceVersion = info.device_version; 687 } else { 688 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 689 } 690 691 if (facing) { 692 *facing = info.facing; 693 } 694 695 return deviceVersion; 696} 697 698Status CameraService::filterGetInfoErrorCode(status_t err) { 699 switch(err) { 700 case NO_ERROR: 701 return Status::ok(); 702 case -EINVAL: 703 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, 704 "CameraId is not valid for HAL module"); 705 case -ENODEV: 706 return STATUS_ERROR(ERROR_DISCONNECTED, 707 "Camera device not available"); 708 default: 709 return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, 710 "Camera HAL encountered error %d: %s", 711 err, strerror(-err)); 712 } 713} 714 715bool CameraService::setUpVendorTags() { 716 ATRACE_CALL(); 717 vendor_tag_ops_t vOps = vendor_tag_ops_t(); 718 719 // Check if vendor operations have been implemented 720 if (!mModule->isVendorTagDefined()) { 721 ALOGI("%s: No vendor tags defined for this device.", __FUNCTION__); 722 return false; 723 } 724 725 mModule->getVendorTagOps(&vOps); 726 727 // Ensure all vendor operations are present 728 if (vOps.get_tag_count == NULL || vOps.get_all_tags == NULL || 729 vOps.get_section_name == NULL || vOps.get_tag_name == NULL || 730 vOps.get_tag_type == NULL) { 731 ALOGE("%s: Vendor tag operations not fully defined. Ignoring definitions." 732 , __FUNCTION__); 733 return false; 734 } 735 736 // Read all vendor tag definitions into a descriptor 737 sp<VendorTagDescriptor> desc; 738 status_t res; 739 if ((res = VendorTagDescriptor::createDescriptorFromOps(&vOps, /*out*/desc)) 740 != OK) { 741 ALOGE("%s: Could not generate descriptor from vendor tag operations," 742 "received error %s (%d). Camera clients will not be able to use" 743 "vendor tags", __FUNCTION__, strerror(res), res); 744 return false; 745 } 746 747 // Set the global descriptor to use with camera metadata 748 VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc); 749 return true; 750} 751 752Status CameraService::makeClient(const sp<CameraService>& cameraService, 753 const sp<IInterface>& cameraCb, const String16& packageName, int cameraId, 754 int facing, int clientPid, uid_t clientUid, int servicePid, bool legacyMode, 755 int halVersion, int deviceVersion, apiLevel effectiveApiLevel, 756 /*out*/sp<BasicClient>* client) { 757 758 if (halVersion < 0 || halVersion == deviceVersion) { 759 // Default path: HAL version is unspecified by caller, create CameraClient 760 // based on device version reported by the HAL. 761 switch(deviceVersion) { 762 case CAMERA_DEVICE_API_VERSION_1_0: 763 if (effectiveApiLevel == API_1) { // Camera1 API route 764 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 765 *client = new CameraClient(cameraService, tmp, packageName, cameraId, facing, 766 clientPid, clientUid, getpid(), legacyMode); 767 } else { // Camera2 API route 768 ALOGW("Camera using old HAL version: %d", deviceVersion); 769 return STATUS_ERROR_FMT(ERROR_DEPRECATED_HAL, 770 "Camera device \"%d\" HAL version %d does not support camera2 API", 771 cameraId, deviceVersion); 772 } 773 break; 774 case CAMERA_DEVICE_API_VERSION_3_0: 775 case CAMERA_DEVICE_API_VERSION_3_1: 776 case CAMERA_DEVICE_API_VERSION_3_2: 777 case CAMERA_DEVICE_API_VERSION_3_3: 778 case CAMERA_DEVICE_API_VERSION_3_4: 779 if (effectiveApiLevel == API_1) { // Camera1 API route 780 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 781 *client = new Camera2Client(cameraService, tmp, packageName, cameraId, facing, 782 clientPid, clientUid, servicePid, legacyMode); 783 } else { // Camera2 API route 784 sp<hardware::camera2::ICameraDeviceCallbacks> tmp = 785 static_cast<hardware::camera2::ICameraDeviceCallbacks*>(cameraCb.get()); 786 *client = new CameraDeviceClient(cameraService, tmp, packageName, cameraId, 787 facing, clientPid, clientUid, servicePid); 788 } 789 break; 790 default: 791 // Should not be reachable 792 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 793 return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, 794 "Camera device \"%d\" has unknown HAL version %d", 795 cameraId, deviceVersion); 796 } 797 } else { 798 // A particular HAL version is requested by caller. Create CameraClient 799 // based on the requested HAL version. 800 if (deviceVersion > CAMERA_DEVICE_API_VERSION_1_0 && 801 halVersion == CAMERA_DEVICE_API_VERSION_1_0) { 802 // Only support higher HAL version device opened as HAL1.0 device. 803 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 804 *client = new CameraClient(cameraService, tmp, packageName, cameraId, facing, 805 clientPid, clientUid, servicePid, legacyMode); 806 } else { 807 // Other combinations (e.g. HAL3.x open as HAL2.x) are not supported yet. 808 ALOGE("Invalid camera HAL version %x: HAL %x device can only be" 809 " opened as HAL %x device", halVersion, deviceVersion, 810 CAMERA_DEVICE_API_VERSION_1_0); 811 return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, 812 "Camera device \"%d\" (HAL version %d) cannot be opened as HAL version %d", 813 cameraId, deviceVersion, halVersion); 814 } 815 } 816 return Status::ok(); 817} 818 819String8 CameraService::toString(std::set<userid_t> intSet) { 820 String8 s(""); 821 bool first = true; 822 for (userid_t i : intSet) { 823 if (first) { 824 s.appendFormat("%d", i); 825 first = false; 826 } else { 827 s.appendFormat(", %d", i); 828 } 829 } 830 return s; 831} 832 833Status CameraService::initializeShimMetadata(int cameraId) { 834 int uid = getCallingUid(); 835 836 String16 internalPackageName("cameraserver"); 837 String8 id = String8::format("%d", cameraId); 838 Status ret = Status::ok(); 839 sp<Client> tmp = nullptr; 840 if (!(ret = connectHelper<ICameraClient,Client>( 841 sp<ICameraClient>{nullptr}, id, static_cast<int>(CAMERA_HAL_API_VERSION_UNSPECIFIED), 842 internalPackageName, uid, USE_CALLING_PID, 843 API_1, /*legacyMode*/ false, /*shimUpdateOnly*/ true, 844 /*out*/ tmp) 845 ).isOk()) { 846 ALOGE("%s: Error initializing shim metadata: %s", __FUNCTION__, ret.toString8().string()); 847 } 848 return ret; 849} 850 851Status CameraService::getLegacyParametersLazy(int cameraId, 852 /*out*/ 853 CameraParameters* parameters) { 854 855 ALOGV("%s: for cameraId: %d", __FUNCTION__, cameraId); 856 857 Status ret = Status::ok(); 858 859 if (parameters == NULL) { 860 ALOGE("%s: parameters must not be null", __FUNCTION__); 861 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "Parameters must not be null"); 862 } 863 864 String8 id = String8::format("%d", cameraId); 865 866 // Check if we already have parameters 867 { 868 // Scope for service lock 869 Mutex::Autolock lock(mServiceLock); 870 auto cameraState = getCameraState(id); 871 if (cameraState == nullptr) { 872 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 873 return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, 874 "Invalid camera ID: %s", id.string()); 875 } 876 CameraParameters p = cameraState->getShimParams(); 877 if (!p.isEmpty()) { 878 *parameters = p; 879 return ret; 880 } 881 } 882 883 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 884 ret = initializeShimMetadata(cameraId); 885 IPCThreadState::self()->restoreCallingIdentity(token); 886 if (!ret.isOk()) { 887 // Error already logged by callee 888 return ret; 889 } 890 891 // Check for parameters again 892 { 893 // Scope for service lock 894 Mutex::Autolock lock(mServiceLock); 895 auto cameraState = getCameraState(id); 896 if (cameraState == nullptr) { 897 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 898 return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, 899 "Invalid camera ID: %s", id.string()); 900 } 901 CameraParameters p = cameraState->getShimParams(); 902 if (!p.isEmpty()) { 903 *parameters = p; 904 return ret; 905 } 906 } 907 908 ALOGE("%s: Parameters were not initialized, or were empty. Device may not be present.", 909 __FUNCTION__); 910 return STATUS_ERROR(ERROR_INVALID_OPERATION, "Unable to initialize legacy parameters"); 911} 912 913// Can camera service trust the caller based on the calling UID? 914static bool isTrustedCallingUid(uid_t uid) { 915 switch (uid) { 916 case AID_MEDIA: // mediaserver 917 case AID_CAMERASERVER: // cameraserver 918 return true; 919 default: 920 return false; 921 } 922} 923 924Status CameraService::validateConnectLocked(const String8& cameraId, 925 const String8& clientName8, /*inout*/int& clientUid, /*inout*/int& clientPid, 926 /*out*/int& originalClientPid) const { 927 928#if !defined(__BRILLO__) 929 Status allowed = validateClientPermissionsLocked(cameraId, clientName8, clientUid, clientPid, 930 originalClientPid); 931 if (!allowed.isOk()) { 932 return allowed; 933 } 934#endif // defined(__BRILLO__) 935 936 int callingPid = getCallingPid(); 937 938 if (!mModule) { 939 ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)", 940 callingPid); 941 return STATUS_ERROR_FMT(ERROR_DISCONNECTED, 942 "No camera HAL module available to open camera device \"%s\"", cameraId.string()); 943 } 944 945 if (getCameraState(cameraId) == nullptr) { 946 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 947 cameraId.string()); 948 return STATUS_ERROR_FMT(ERROR_DISCONNECTED, 949 "No camera device with ID \"%s\" available", cameraId.string()); 950 } 951 952 status_t err = checkIfDeviceIsUsable(cameraId); 953 if (err != NO_ERROR) { 954 switch(err) { 955 case -ENODEV: 956 case -EBUSY: 957 return STATUS_ERROR_FMT(ERROR_DISCONNECTED, 958 "No camera device with ID \"%s\" currently available", cameraId.string()); 959 default: 960 return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, 961 "Unknown error connecting to ID \"%s\"", cameraId.string()); 962 } 963 } 964 return Status::ok(); 965} 966 967Status CameraService::validateClientPermissionsLocked(const String8& cameraId, 968 const String8& clientName8, int& clientUid, int& clientPid, 969 /*out*/int& originalClientPid) const { 970 int callingPid = getCallingPid(); 971 int callingUid = getCallingUid(); 972 973 // Check if we can trust clientUid 974 if (clientUid == USE_CALLING_UID) { 975 clientUid = callingUid; 976 } else if (!isTrustedCallingUid(callingUid)) { 977 ALOGE("CameraService::connect X (calling PID %d, calling UID %d) rejected " 978 "(don't trust clientUid %d)", callingPid, callingUid, clientUid); 979 return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED, 980 "Untrusted caller (calling PID %d, UID %d) trying to " 981 "forward camera access to camera %s for client %s (PID %d, UID %d)", 982 callingPid, callingUid, cameraId.string(), 983 clientName8.string(), clientUid, clientPid); 984 } 985 986 // Check if we can trust clientPid 987 if (clientPid == USE_CALLING_PID) { 988 clientPid = callingPid; 989 } else if (!isTrustedCallingUid(callingUid)) { 990 ALOGE("CameraService::connect X (calling PID %d, calling UID %d) rejected " 991 "(don't trust clientPid %d)", callingPid, callingUid, clientPid); 992 return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED, 993 "Untrusted caller (calling PID %d, UID %d) trying to " 994 "forward camera access to camera %s for client %s (PID %d, UID %d)", 995 callingPid, callingUid, cameraId.string(), 996 clientName8.string(), clientUid, clientPid); 997 } 998 999 // If it's not calling from cameraserver, check the permission. 1000 if (callingPid != getpid() && 1001 !checkPermission(String16("android.permission.CAMERA"), clientPid, clientUid)) { 1002 ALOGE("Permission Denial: can't use the camera pid=%d, uid=%d", clientPid, clientUid); 1003 return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED, 1004 "Caller \"%s\" (PID %d, UID %d) cannot open camera \"%s\" without camera permission", 1005 clientName8.string(), clientUid, clientPid, cameraId.string()); 1006 } 1007 1008 // Only use passed in clientPid to check permission. Use calling PID as the client PID that's 1009 // connected to camera service directly. 1010 originalClientPid = clientPid; 1011 clientPid = callingPid; 1012 1013 userid_t clientUserId = multiuser_get_user_id(clientUid); 1014 1015 // Only allow clients who are being used by the current foreground device user, unless calling 1016 // from our own process. 1017 if (callingPid != getpid() && (mAllowedUsers.find(clientUserId) == mAllowedUsers.end())) { 1018 ALOGE("CameraService::connect X (PID %d) rejected (cannot connect from " 1019 "device user %d, currently allowed device users: %s)", callingPid, clientUserId, 1020 toString(mAllowedUsers).string()); 1021 return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED, 1022 "Callers from device user %d are not currently allowed to connect to camera \"%s\"", 1023 clientUserId, cameraId.string()); 1024 } 1025 1026 return Status::ok(); 1027} 1028 1029status_t CameraService::checkIfDeviceIsUsable(const String8& cameraId) const { 1030 auto cameraState = getCameraState(cameraId); 1031 int callingPid = getCallingPid(); 1032 if (cameraState == nullptr) { 1033 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 1034 cameraId.string()); 1035 return -ENODEV; 1036 } 1037 1038 int32_t currentStatus = cameraState->getStatus(); 1039 if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { 1040 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is not connected)", 1041 callingPid, cameraId.string()); 1042 return -ENODEV; 1043 } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) { 1044 ALOGE("CameraService::connect X (PID %d) rejected, (camera %s is initializing)", 1045 callingPid, cameraId.string()); 1046 return -EBUSY; 1047 } 1048 1049 return NO_ERROR; 1050} 1051 1052void CameraService::finishConnectLocked(const sp<BasicClient>& client, 1053 const CameraService::DescriptorPtr& desc) { 1054 1055 // Make a descriptor for the incoming client 1056 auto clientDescriptor = CameraService::CameraClientManager::makeClientDescriptor(client, desc); 1057 auto evicted = mActiveClientManager.addAndEvict(clientDescriptor); 1058 1059 logConnected(desc->getKey(), static_cast<int>(desc->getOwnerId()), 1060 String8(client->getPackageName())); 1061 1062 if (evicted.size() > 0) { 1063 // This should never happen - clients should already have been removed in disconnect 1064 for (auto& i : evicted) { 1065 ALOGE("%s: Invalid state: Client for camera %s was not removed in disconnect", 1066 __FUNCTION__, i->getKey().string()); 1067 } 1068 1069 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, clients not evicted properly", 1070 __FUNCTION__); 1071 } 1072 1073 // And register a death notification for the client callback. Do 1074 // this last to avoid Binder policy where a nested Binder 1075 // transaction might be pre-empted to service the client death 1076 // notification if the client process dies before linkToDeath is 1077 // invoked. 1078 sp<IBinder> remoteCallback = client->getRemote(); 1079 if (remoteCallback != nullptr) { 1080 remoteCallback->linkToDeath(this); 1081 } 1082} 1083 1084status_t CameraService::handleEvictionsLocked(const String8& cameraId, int clientPid, 1085 apiLevel effectiveApiLevel, const sp<IBinder>& remoteCallback, const String8& packageName, 1086 /*out*/ 1087 sp<BasicClient>* client, 1088 std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>* partial) { 1089 ATRACE_CALL(); 1090 status_t ret = NO_ERROR; 1091 std::vector<DescriptorPtr> evictedClients; 1092 DescriptorPtr clientDescriptor; 1093 { 1094 if (effectiveApiLevel == API_1) { 1095 // If we are using API1, any existing client for this camera ID with the same remote 1096 // should be returned rather than evicted to allow MediaRecorder to work properly. 1097 1098 auto current = mActiveClientManager.get(cameraId); 1099 if (current != nullptr) { 1100 auto clientSp = current->getValue(); 1101 if (clientSp.get() != nullptr) { // should never be needed 1102 if (!clientSp->canCastToApiClient(effectiveApiLevel)) { 1103 ALOGW("CameraService connect called from same client, but with a different" 1104 " API level, evicting prior client..."); 1105 } else if (clientSp->getRemote() == remoteCallback) { 1106 ALOGI("CameraService::connect X (PID %d) (second call from same" 1107 " app binder, returning the same client)", clientPid); 1108 *client = clientSp; 1109 return NO_ERROR; 1110 } 1111 } 1112 } 1113 } 1114 1115 // Get current active client PIDs 1116 std::vector<int> ownerPids(mActiveClientManager.getAllOwners()); 1117 ownerPids.push_back(clientPid); 1118 1119 // Use the value +PROCESS_STATE_NONEXISTENT, to avoid taking 1120 // address of PROCESS_STATE_NONEXISTENT as a reference argument 1121 // for the vector constructor. PROCESS_STATE_NONEXISTENT does 1122 // not have an out-of-class definition. 1123 std::vector<int> priorities(ownerPids.size(), +PROCESS_STATE_NONEXISTENT); 1124 1125 // Get priorites of all active PIDs 1126 ProcessInfoService::getProcessStatesFromPids(ownerPids.size(), &ownerPids[0], 1127 /*out*/&priorities[0]); 1128 1129 // Update all active clients' priorities 1130 std::map<int,int> pidToPriorityMap; 1131 for (size_t i = 0; i < ownerPids.size() - 1; i++) { 1132 pidToPriorityMap.emplace(ownerPids[i], getCameraPriorityFromProcState(priorities[i])); 1133 } 1134 mActiveClientManager.updatePriorities(pidToPriorityMap); 1135 1136 // Get state for the given cameraId 1137 auto state = getCameraState(cameraId); 1138 if (state == nullptr) { 1139 ALOGE("CameraService::connect X (PID %d) rejected (no camera device with ID %s)", 1140 clientPid, cameraId.string()); 1141 // Should never get here because validateConnectLocked should have errored out 1142 return BAD_VALUE; 1143 } 1144 1145 // Make descriptor for incoming client 1146 clientDescriptor = CameraClientManager::makeClientDescriptor(cameraId, 1147 sp<BasicClient>{nullptr}, static_cast<int32_t>(state->getCost()), 1148 state->getConflicting(), 1149 getCameraPriorityFromProcState(priorities[priorities.size() - 1]), clientPid); 1150 1151 // Find clients that would be evicted 1152 auto evicted = mActiveClientManager.wouldEvict(clientDescriptor); 1153 1154 // If the incoming client was 'evicted,' higher priority clients have the camera in the 1155 // background, so we cannot do evictions 1156 if (std::find(evicted.begin(), evicted.end(), clientDescriptor) != evicted.end()) { 1157 ALOGE("CameraService::connect X (PID %d) rejected (existing client(s) with higher" 1158 " priority).", clientPid); 1159 1160 sp<BasicClient> clientSp = clientDescriptor->getValue(); 1161 String8 curTime = getFormattedCurrentTime(); 1162 auto incompatibleClients = 1163 mActiveClientManager.getIncompatibleClients(clientDescriptor); 1164 1165 String8 msg = String8::format("%s : DENIED connect device %s client for package %s " 1166 "(PID %d, priority %d) due to eviction policy", curTime.string(), 1167 cameraId.string(), packageName.string(), clientPid, 1168 getCameraPriorityFromProcState(priorities[priorities.size() - 1])); 1169 1170 for (auto& i : incompatibleClients) { 1171 msg.appendFormat("\n - Blocked by existing device %s client for package %s" 1172 "(PID %" PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1173 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1174 i->getPriority()); 1175 ALOGE(" Conflicts with: Device %s, client package %s (PID %" 1176 PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1177 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1178 i->getPriority()); 1179 } 1180 1181 // Log the client's attempt 1182 Mutex::Autolock l(mLogLock); 1183 mEventLog.add(msg); 1184 1185 return -EBUSY; 1186 } 1187 1188 for (auto& i : evicted) { 1189 sp<BasicClient> clientSp = i->getValue(); 1190 if (clientSp.get() == nullptr) { 1191 ALOGE("%s: Invalid state: Null client in active client list.", __FUNCTION__); 1192 1193 // TODO: Remove this 1194 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, null client in active list", 1195 __FUNCTION__); 1196 mActiveClientManager.remove(i); 1197 continue; 1198 } 1199 1200 ALOGE("CameraService::connect evicting conflicting client for camera ID %s", 1201 i->getKey().string()); 1202 evictedClients.push_back(i); 1203 1204 // Log the clients evicted 1205 logEvent(String8::format("EVICT device %s client held by package %s (PID" 1206 " %" PRId32 ", priority %" PRId32 ")\n - Evicted by device %s client for" 1207 " package %s (PID %d, priority %" PRId32 ")", 1208 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1209 i->getOwnerId(), i->getPriority(), cameraId.string(), 1210 packageName.string(), clientPid, 1211 getCameraPriorityFromProcState(priorities[priorities.size() - 1]))); 1212 1213 // Notify the client of disconnection 1214 clientSp->notifyError(hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1215 CaptureResultExtras()); 1216 } 1217 } 1218 1219 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1220 // other clients from connecting in mServiceLockWrapper if held 1221 mServiceLock.unlock(); 1222 1223 // Clear caller identity temporarily so client disconnect PID checks work correctly 1224 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1225 1226 // Destroy evicted clients 1227 for (auto& i : evictedClients) { 1228 // Disconnect is blocking, and should only have returned when HAL has cleaned up 1229 i->getValue()->disconnect(); // Clients will remove themselves from the active client list 1230 } 1231 1232 IPCThreadState::self()->restoreCallingIdentity(token); 1233 1234 for (const auto& i : evictedClients) { 1235 ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")", 1236 __FUNCTION__, i->getKey().string(), i->getOwnerId()); 1237 ret = mActiveClientManager.waitUntilRemoved(i, DEFAULT_DISCONNECT_TIMEOUT_NS); 1238 if (ret == TIMED_OUT) { 1239 ALOGE("%s: Timed out waiting for client for device %s to disconnect, " 1240 "current clients:\n%s", __FUNCTION__, i->getKey().string(), 1241 mActiveClientManager.toString().string()); 1242 return -EBUSY; 1243 } 1244 if (ret != NO_ERROR) { 1245 ALOGE("%s: Received error waiting for client for device %s to disconnect: %s (%d), " 1246 "current clients:\n%s", __FUNCTION__, i->getKey().string(), strerror(-ret), 1247 ret, mActiveClientManager.toString().string()); 1248 return ret; 1249 } 1250 } 1251 1252 evictedClients.clear(); 1253 1254 // Once clients have been disconnected, relock 1255 mServiceLock.lock(); 1256 1257 // Check again if the device was unplugged or something while we weren't holding mServiceLock 1258 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1259 return ret; 1260 } 1261 1262 *partial = clientDescriptor; 1263 return NO_ERROR; 1264} 1265 1266Status CameraService::connect( 1267 const sp<ICameraClient>& cameraClient, 1268 int cameraId, 1269 const String16& clientPackageName, 1270 int clientUid, 1271 int clientPid, 1272 /*out*/ 1273 sp<ICamera>* device) { 1274 1275 ATRACE_CALL(); 1276 Status ret = Status::ok(); 1277 String8 id = String8::format("%d", cameraId); 1278 sp<Client> client = nullptr; 1279 ret = connectHelper<ICameraClient,Client>(cameraClient, id, 1280 CAMERA_HAL_API_VERSION_UNSPECIFIED, clientPackageName, clientUid, clientPid, API_1, 1281 /*legacyMode*/ false, /*shimUpdateOnly*/ false, 1282 /*out*/client); 1283 1284 if(!ret.isOk()) { 1285 logRejected(id, getCallingPid(), String8(clientPackageName), 1286 ret.toString8()); 1287 return ret; 1288 } 1289 1290 *device = client; 1291 return ret; 1292} 1293 1294Status CameraService::connectLegacy( 1295 const sp<ICameraClient>& cameraClient, 1296 int cameraId, int halVersion, 1297 const String16& clientPackageName, 1298 int clientUid, 1299 /*out*/ 1300 sp<ICamera>* device) { 1301 1302 ATRACE_CALL(); 1303 String8 id = String8::format("%d", cameraId); 1304 int apiVersion = mModule->getModuleApiVersion(); 1305 if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED && 1306 apiVersion < CAMERA_MODULE_API_VERSION_2_3) { 1307 /* 1308 * Either the HAL version is unspecified in which case this just creates 1309 * a camera client selected by the latest device version, or 1310 * it's a particular version in which case the HAL must supported 1311 * the open_legacy call 1312 */ 1313 String8 msg = String8::format("Camera HAL module version %x too old for connectLegacy!", 1314 apiVersion); 1315 ALOGE("%s: %s", 1316 __FUNCTION__, msg.string()); 1317 logRejected(id, getCallingPid(), String8(clientPackageName), 1318 msg); 1319 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, msg.string()); 1320 } 1321 1322 Status ret = Status::ok(); 1323 sp<Client> client = nullptr; 1324 ret = connectHelper<ICameraClient,Client>(cameraClient, id, halVersion, 1325 clientPackageName, clientUid, USE_CALLING_PID, API_1, 1326 /*legacyMode*/ true, /*shimUpdateOnly*/ false, 1327 /*out*/client); 1328 1329 if(!ret.isOk()) { 1330 logRejected(id, getCallingPid(), String8(clientPackageName), 1331 ret.toString8()); 1332 return ret; 1333 } 1334 1335 *device = client; 1336 return ret; 1337} 1338 1339Status CameraService::connectDevice( 1340 const sp<hardware::camera2::ICameraDeviceCallbacks>& cameraCb, 1341 int cameraId, 1342 const String16& clientPackageName, 1343 int clientUid, 1344 /*out*/ 1345 sp<hardware::camera2::ICameraDeviceUser>* device) { 1346 1347 ATRACE_CALL(); 1348 Status ret = Status::ok(); 1349 String8 id = String8::format("%d", cameraId); 1350 sp<CameraDeviceClient> client = nullptr; 1351 ret = connectHelper<hardware::camera2::ICameraDeviceCallbacks,CameraDeviceClient>(cameraCb, id, 1352 CAMERA_HAL_API_VERSION_UNSPECIFIED, clientPackageName, 1353 clientUid, USE_CALLING_PID, API_2, 1354 /*legacyMode*/ false, /*shimUpdateOnly*/ false, 1355 /*out*/client); 1356 1357 if(!ret.isOk()) { 1358 logRejected(id, getCallingPid(), String8(clientPackageName), 1359 ret.toString8()); 1360 return ret; 1361 } 1362 1363 *device = client; 1364 return ret; 1365} 1366 1367Status CameraService::setTorchMode(const String16& cameraId, bool enabled, 1368 const sp<IBinder>& clientBinder) { 1369 1370 ATRACE_CALL(); 1371 if (enabled && clientBinder == nullptr) { 1372 ALOGE("%s: torch client binder is NULL", __FUNCTION__); 1373 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, 1374 "Torch client Binder is null"); 1375 } 1376 1377 String8 id = String8(cameraId.string()); 1378 int uid = getCallingUid(); 1379 1380 // verify id is valid. 1381 auto state = getCameraState(id); 1382 if (state == nullptr) { 1383 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1384 return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, 1385 "Camera ID \"%s\" is a not valid camera ID", id.string()); 1386 } 1387 1388 int32_t cameraStatus = state->getStatus(); 1389 if (cameraStatus != ICameraServiceListener::STATUS_PRESENT && 1390 cameraStatus != ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1391 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1392 return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, 1393 "Camera ID \"%s\" is a not valid camera ID", id.string()); 1394 } 1395 1396 { 1397 Mutex::Autolock al(mTorchStatusMutex); 1398 int32_t status; 1399 status_t err = getTorchStatusLocked(id, &status); 1400 if (err != OK) { 1401 if (err == NAME_NOT_FOUND) { 1402 return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, 1403 "Camera \"%s\" does not have a flash unit", id.string()); 1404 } 1405 ALOGE("%s: getting current torch status failed for camera %s", 1406 __FUNCTION__, id.string()); 1407 return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, 1408 "Error updating torch status for camera \"%s\": %s (%d)", id.string(), 1409 strerror(-err), err); 1410 } 1411 1412 if (status == ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE) { 1413 if (cameraStatus == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1414 ALOGE("%s: torch mode of camera %s is not available because " 1415 "camera is in use", __FUNCTION__, id.string()); 1416 return STATUS_ERROR_FMT(ERROR_CAMERA_IN_USE, 1417 "Torch for camera \"%s\" is not available due to an existing camera user", 1418 id.string()); 1419 } else { 1420 ALOGE("%s: torch mode of camera %s is not available due to " 1421 "insufficient resources", __FUNCTION__, id.string()); 1422 return STATUS_ERROR_FMT(ERROR_MAX_CAMERAS_IN_USE, 1423 "Torch for camera \"%s\" is not available due to insufficient resources", 1424 id.string()); 1425 } 1426 } 1427 } 1428 1429 { 1430 // Update UID map - this is used in the torch status changed callbacks, so must be done 1431 // before setTorchMode 1432 Mutex::Autolock al(mTorchUidMapMutex); 1433 if (mTorchUidMap.find(id) == mTorchUidMap.end()) { 1434 mTorchUidMap[id].first = uid; 1435 mTorchUidMap[id].second = uid; 1436 } else { 1437 // Set the pending UID 1438 mTorchUidMap[id].first = uid; 1439 } 1440 } 1441 1442 status_t err = mFlashlight->setTorchMode(id, enabled); 1443 1444 if (err != OK) { 1445 int32_t errorCode; 1446 String8 msg; 1447 switch (err) { 1448 case -ENOSYS: 1449 msg = String8::format("Camera \"%s\" has no flashlight", 1450 id.string()); 1451 errorCode = ERROR_ILLEGAL_ARGUMENT; 1452 break; 1453 default: 1454 msg = String8::format( 1455 "Setting torch mode of camera \"%s\" to %d failed: %s (%d)", 1456 id.string(), enabled, strerror(-err), err); 1457 errorCode = ERROR_INVALID_OPERATION; 1458 } 1459 ALOGE("%s: %s", __FUNCTION__, msg.string()); 1460 return STATUS_ERROR(errorCode, msg.string()); 1461 } 1462 1463 { 1464 // update the link to client's death 1465 Mutex::Autolock al(mTorchClientMapMutex); 1466 ssize_t index = mTorchClientMap.indexOfKey(id); 1467 if (enabled) { 1468 if (index == NAME_NOT_FOUND) { 1469 mTorchClientMap.add(id, clientBinder); 1470 } else { 1471 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1472 mTorchClientMap.replaceValueAt(index, clientBinder); 1473 } 1474 clientBinder->linkToDeath(this); 1475 } else if (index != NAME_NOT_FOUND) { 1476 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1477 } 1478 } 1479 1480 return Status::ok(); 1481} 1482 1483Status CameraService::notifySystemEvent(int32_t eventId, 1484 const std::vector<int32_t>& args) { 1485 ATRACE_CALL(); 1486 1487 switch(eventId) { 1488 case ICameraService::EVENT_USER_SWITCHED: { 1489 doUserSwitch(/*newUserIds*/ args); 1490 break; 1491 } 1492 case ICameraService::EVENT_NONE: 1493 default: { 1494 ALOGW("%s: Received invalid system event from system_server: %d", __FUNCTION__, 1495 eventId); 1496 break; 1497 } 1498 } 1499 return Status::ok(); 1500} 1501 1502Status CameraService::addListener(const sp<ICameraServiceListener>& listener) { 1503 ATRACE_CALL(); 1504 1505 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); 1506 1507 if (listener == nullptr) { 1508 ALOGE("%s: Listener must not be null", __FUNCTION__); 1509 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "Null listener given to addListener"); 1510 } 1511 1512 Mutex::Autolock lock(mServiceLock); 1513 1514 { 1515 Mutex::Autolock lock(mStatusListenerLock); 1516 for (auto& it : mListenerList) { 1517 if (IInterface::asBinder(it) == IInterface::asBinder(listener)) { 1518 ALOGW("%s: Tried to add listener %p which was already subscribed", 1519 __FUNCTION__, listener.get()); 1520 return STATUS_ERROR(ERROR_ALREADY_EXISTS, "Listener already registered"); 1521 } 1522 } 1523 1524 mListenerList.push_back(listener); 1525 } 1526 1527 1528 /* Immediately signal current status to this listener only */ 1529 { 1530 Mutex::Autolock lock(mCameraStatesLock); 1531 for (auto& i : mCameraStates) { 1532 // TODO: Update binder to use String16 for camera IDs and remove; 1533 int id = cameraIdToInt(i.first); 1534 if (id == -1) continue; 1535 1536 listener->onStatusChanged(i.second->getStatus(), id); 1537 } 1538 } 1539 1540 /* Immediately signal current torch status to this listener only */ 1541 { 1542 Mutex::Autolock al(mTorchStatusMutex); 1543 for (size_t i = 0; i < mTorchStatusMap.size(); i++ ) { 1544 String16 id = String16(mTorchStatusMap.keyAt(i).string()); 1545 listener->onTorchStatusChanged(mTorchStatusMap.valueAt(i), id); 1546 } 1547 } 1548 1549 return Status::ok(); 1550} 1551 1552Status CameraService::removeListener(const sp<ICameraServiceListener>& listener) { 1553 ATRACE_CALL(); 1554 1555 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); 1556 1557 if (listener == 0) { 1558 ALOGE("%s: Listener must not be null", __FUNCTION__); 1559 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "Null listener given to removeListener"); 1560 } 1561 1562 Mutex::Autolock lock(mServiceLock); 1563 1564 { 1565 Mutex::Autolock lock(mStatusListenerLock); 1566 for (auto it = mListenerList.begin(); it != mListenerList.end(); it++) { 1567 if (IInterface::asBinder(*it) == IInterface::asBinder(listener)) { 1568 mListenerList.erase(it); 1569 return Status::ok(); 1570 } 1571 } 1572 } 1573 1574 ALOGW("%s: Tried to remove a listener %p which was not subscribed", 1575 __FUNCTION__, listener.get()); 1576 1577 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "Unregistered listener given to removeListener"); 1578} 1579 1580Status CameraService::getLegacyParameters(int cameraId, /*out*/String16* parameters) { 1581 1582 ATRACE_CALL(); 1583 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1584 1585 if (parameters == NULL) { 1586 ALOGE("%s: parameters must not be null", __FUNCTION__); 1587 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "Parameters must not be null"); 1588 } 1589 1590 Status ret = Status::ok(); 1591 1592 CameraParameters shimParams; 1593 if (!(ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)).isOk()) { 1594 // Error logged by caller 1595 return ret; 1596 } 1597 1598 String8 shimParamsString8 = shimParams.flatten(); 1599 String16 shimParamsString16 = String16(shimParamsString8); 1600 1601 *parameters = shimParamsString16; 1602 1603 return ret; 1604} 1605 1606Status CameraService::supportsCameraApi(int cameraId, int apiVersion, bool *isSupported) { 1607 ATRACE_CALL(); 1608 1609 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1610 1611 switch (apiVersion) { 1612 case API_VERSION_1: 1613 case API_VERSION_2: 1614 break; 1615 default: 1616 String8 msg = String8::format("Unknown API version %d", apiVersion); 1617 ALOGE("%s: %s", __FUNCTION__, msg.string()); 1618 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, msg.string()); 1619 } 1620 1621 int facing = -1; 1622 int deviceVersion = getDeviceVersion(cameraId, &facing); 1623 1624 switch(deviceVersion) { 1625 case CAMERA_DEVICE_API_VERSION_1_0: 1626 case CAMERA_DEVICE_API_VERSION_3_0: 1627 case CAMERA_DEVICE_API_VERSION_3_1: 1628 if (apiVersion == API_VERSION_2) { 1629 ALOGV("%s: Camera id %d uses HAL version %d <3.2, doesn't support api2 without shim", 1630 __FUNCTION__, cameraId, deviceVersion); 1631 *isSupported = false; 1632 } else { // if (apiVersion == API_VERSION_1) { 1633 ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported", 1634 __FUNCTION__, cameraId); 1635 *isSupported = true; 1636 } 1637 break; 1638 case CAMERA_DEVICE_API_VERSION_3_2: 1639 case CAMERA_DEVICE_API_VERSION_3_3: 1640 case CAMERA_DEVICE_API_VERSION_3_4: 1641 ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly", 1642 __FUNCTION__, cameraId); 1643 *isSupported = true; 1644 break; 1645 case -1: { 1646 String8 msg = String8::format("Unknown camera ID %d", cameraId); 1647 ALOGE("%s: %s", __FUNCTION__, msg.string()); 1648 return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, msg.string()); 1649 } 1650 default: { 1651 String8 msg = String8::format("Unknown device version %d for device %d", 1652 deviceVersion, cameraId); 1653 ALOGE("%s: %s", __FUNCTION__, msg.string()); 1654 return STATUS_ERROR(ERROR_INVALID_OPERATION, msg.string()); 1655 } 1656 } 1657 1658 return Status::ok(); 1659} 1660 1661void CameraService::removeByClient(const BasicClient* client) { 1662 Mutex::Autolock lock(mServiceLock); 1663 for (auto& i : mActiveClientManager.getAll()) { 1664 auto clientSp = i->getValue(); 1665 if (clientSp.get() == client) { 1666 mActiveClientManager.remove(i); 1667 } 1668 } 1669} 1670 1671bool CameraService::evictClientIdByRemote(const wp<IBinder>& remote) { 1672 const int callingPid = getCallingPid(); 1673 const int servicePid = getpid(); 1674 bool ret = false; 1675 { 1676 // Acquire mServiceLock and prevent other clients from connecting 1677 std::unique_ptr<AutoConditionLock> lock = 1678 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1679 1680 1681 std::vector<sp<BasicClient>> evicted; 1682 for (auto& i : mActiveClientManager.getAll()) { 1683 auto clientSp = i->getValue(); 1684 if (clientSp.get() == nullptr) { 1685 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1686 mActiveClientManager.remove(i); 1687 continue; 1688 } 1689 if (remote == clientSp->getRemote() && (callingPid == servicePid || 1690 callingPid == clientSp->getClientPid())) { 1691 mActiveClientManager.remove(i); 1692 evicted.push_back(clientSp); 1693 1694 // Notify the client of disconnection 1695 clientSp->notifyError( 1696 hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1697 CaptureResultExtras()); 1698 } 1699 } 1700 1701 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1702 // other clients from connecting in mServiceLockWrapper if held 1703 mServiceLock.unlock(); 1704 1705 // Do not clear caller identity, remote caller should be client proccess 1706 1707 for (auto& i : evicted) { 1708 if (i.get() != nullptr) { 1709 i->disconnect(); 1710 ret = true; 1711 } 1712 } 1713 1714 // Reacquire mServiceLock 1715 mServiceLock.lock(); 1716 1717 } // lock is destroyed, allow further connect calls 1718 1719 return ret; 1720} 1721 1722 1723/** 1724 * Check camera capabilities, such as support for basic color operation 1725 * Also check that the device HAL version is still in support 1726 */ 1727int CameraService::checkCameraCapabilities(int id, camera_info info, int *latestStrangeCameraId) { 1728 // device_version undefined in CAMERA_MODULE_API_VERSION_1_0, 1729 // All CAMERA_MODULE_API_VERSION_1_0 devices are backward-compatible 1730 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) { 1731 // Verify the device version is in the supported range 1732 switch (info.device_version) { 1733 case CAMERA_DEVICE_API_VERSION_1_0: 1734 case CAMERA_DEVICE_API_VERSION_3_0: 1735 case CAMERA_DEVICE_API_VERSION_3_1: 1736 case CAMERA_DEVICE_API_VERSION_3_2: 1737 case CAMERA_DEVICE_API_VERSION_3_3: 1738 case CAMERA_DEVICE_API_VERSION_3_4: 1739 // in support 1740 break; 1741 case CAMERA_DEVICE_API_VERSION_2_0: 1742 case CAMERA_DEVICE_API_VERSION_2_1: 1743 // no longer supported 1744 default: 1745 ALOGE("%s: Device %d has HAL version %x, which is not supported", 1746 __FUNCTION__, id, info.device_version); 1747 String8 msg = String8::format( 1748 "Unsupported device HAL version %x for device %d", 1749 info.device_version, id); 1750 logServiceError(msg.string(), NO_INIT); 1751 return NO_INIT; 1752 } 1753 } 1754 1755 // Assume all devices pre-v3.3 are backward-compatible 1756 bool isBackwardCompatible = true; 1757 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0 1758 && info.device_version >= CAMERA_DEVICE_API_VERSION_3_3) { 1759 isBackwardCompatible = false; 1760 status_t res; 1761 camera_metadata_ro_entry_t caps; 1762 res = find_camera_metadata_ro_entry( 1763 info.static_camera_characteristics, 1764 ANDROID_REQUEST_AVAILABLE_CAPABILITIES, 1765 &caps); 1766 if (res != 0) { 1767 ALOGW("%s: Unable to find camera capabilities for camera device %d", 1768 __FUNCTION__, id); 1769 caps.count = 0; 1770 } 1771 for (size_t i = 0; i < caps.count; i++) { 1772 if (caps.data.u8[i] == 1773 ANDROID_REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE) { 1774 isBackwardCompatible = true; 1775 break; 1776 } 1777 } 1778 } 1779 1780 if (!isBackwardCompatible) { 1781 mNumberOfNormalCameras--; 1782 *latestStrangeCameraId = id; 1783 } else { 1784 if (id > *latestStrangeCameraId) { 1785 ALOGE("%s: Normal camera ID %d higher than strange camera ID %d. " 1786 "This is not allowed due backward-compatibility requirements", 1787 __FUNCTION__, id, *latestStrangeCameraId); 1788 logServiceError("Invalid order of camera devices", NO_INIT); 1789 mNumberOfCameras = 0; 1790 mNumberOfNormalCameras = 0; 1791 return NO_INIT; 1792 } 1793 } 1794 return OK; 1795} 1796 1797std::shared_ptr<CameraService::CameraState> CameraService::getCameraState( 1798 const String8& cameraId) const { 1799 std::shared_ptr<CameraState> state; 1800 { 1801 Mutex::Autolock lock(mCameraStatesLock); 1802 auto iter = mCameraStates.find(cameraId); 1803 if (iter != mCameraStates.end()) { 1804 state = iter->second; 1805 } 1806 } 1807 return state; 1808} 1809 1810sp<CameraService::BasicClient> CameraService::removeClientLocked(const String8& cameraId) { 1811 // Remove from active clients list 1812 auto clientDescriptorPtr = mActiveClientManager.remove(cameraId); 1813 if (clientDescriptorPtr == nullptr) { 1814 ALOGW("%s: Could not evict client, no client for camera ID %s", __FUNCTION__, 1815 cameraId.string()); 1816 return sp<BasicClient>{nullptr}; 1817 } 1818 1819 return clientDescriptorPtr->getValue(); 1820} 1821 1822void CameraService::doUserSwitch(const std::vector<int32_t>& newUserIds) { 1823 // Acquire mServiceLock and prevent other clients from connecting 1824 std::unique_ptr<AutoConditionLock> lock = 1825 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1826 1827 std::set<userid_t> newAllowedUsers; 1828 for (size_t i = 0; i < newUserIds.size(); i++) { 1829 if (newUserIds[i] < 0) { 1830 ALOGE("%s: Bad user ID %d given during user switch, ignoring.", 1831 __FUNCTION__, newUserIds[i]); 1832 return; 1833 } 1834 newAllowedUsers.insert(static_cast<userid_t>(newUserIds[i])); 1835 } 1836 1837 1838 if (newAllowedUsers == mAllowedUsers) { 1839 ALOGW("%s: Received notification of user switch with no updated user IDs.", __FUNCTION__); 1840 return; 1841 } 1842 1843 logUserSwitch(mAllowedUsers, newAllowedUsers); 1844 1845 mAllowedUsers = std::move(newAllowedUsers); 1846 1847 // Current user has switched, evict all current clients. 1848 std::vector<sp<BasicClient>> evicted; 1849 for (auto& i : mActiveClientManager.getAll()) { 1850 auto clientSp = i->getValue(); 1851 1852 if (clientSp.get() == nullptr) { 1853 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1854 continue; 1855 } 1856 1857 // Don't evict clients that are still allowed. 1858 uid_t clientUid = clientSp->getClientUid(); 1859 userid_t clientUserId = multiuser_get_user_id(clientUid); 1860 if (mAllowedUsers.find(clientUserId) != mAllowedUsers.end()) { 1861 continue; 1862 } 1863 1864 evicted.push_back(clientSp); 1865 1866 String8 curTime = getFormattedCurrentTime(); 1867 1868 ALOGE("Evicting conflicting client for camera ID %s due to user change", 1869 i->getKey().string()); 1870 1871 // Log the clients evicted 1872 logEvent(String8::format("EVICT device %s client held by package %s (PID %" 1873 PRId32 ", priority %" PRId32 ")\n - Evicted due to user switch.", 1874 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1875 i->getOwnerId(), i->getPriority())); 1876 1877 } 1878 1879 // Do not hold mServiceLock while disconnecting clients, but retain the condition 1880 // blocking other clients from connecting in mServiceLockWrapper if held. 1881 mServiceLock.unlock(); 1882 1883 // Clear caller identity temporarily so client disconnect PID checks work correctly 1884 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1885 1886 for (auto& i : evicted) { 1887 i->disconnect(); 1888 } 1889 1890 IPCThreadState::self()->restoreCallingIdentity(token); 1891 1892 // Reacquire mServiceLock 1893 mServiceLock.lock(); 1894} 1895 1896void CameraService::logEvent(const char* event) { 1897 String8 curTime = getFormattedCurrentTime(); 1898 Mutex::Autolock l(mLogLock); 1899 mEventLog.add(String8::format("%s : %s", curTime.string(), event)); 1900} 1901 1902void CameraService::logDisconnected(const char* cameraId, int clientPid, 1903 const char* clientPackage) { 1904 // Log the clients evicted 1905 logEvent(String8::format("DISCONNECT device %s client for package %s (PID %d)", cameraId, 1906 clientPackage, clientPid)); 1907} 1908 1909void CameraService::logConnected(const char* cameraId, int clientPid, 1910 const char* clientPackage) { 1911 // Log the clients evicted 1912 logEvent(String8::format("CONNECT device %s client for package %s (PID %d)", cameraId, 1913 clientPackage, clientPid)); 1914} 1915 1916void CameraService::logRejected(const char* cameraId, int clientPid, 1917 const char* clientPackage, const char* reason) { 1918 // Log the client rejected 1919 logEvent(String8::format("REJECT device %s client for package %s (PID %d), reason: (%s)", 1920 cameraId, clientPackage, clientPid, reason)); 1921} 1922 1923void CameraService::logUserSwitch(const std::set<userid_t>& oldUserIds, 1924 const std::set<userid_t>& newUserIds) { 1925 String8 newUsers = toString(newUserIds); 1926 String8 oldUsers = toString(oldUserIds); 1927 // Log the new and old users 1928 logEvent(String8::format("USER_SWITCH previous allowed users: %s , current allowed users: %s", 1929 oldUsers.string(), newUsers.string())); 1930} 1931 1932void CameraService::logDeviceRemoved(const char* cameraId, const char* reason) { 1933 // Log the device removal 1934 logEvent(String8::format("REMOVE device %s, reason: (%s)", cameraId, reason)); 1935} 1936 1937void CameraService::logDeviceAdded(const char* cameraId, const char* reason) { 1938 // Log the device removal 1939 logEvent(String8::format("ADD device %s, reason: (%s)", cameraId, reason)); 1940} 1941 1942void CameraService::logClientDied(int clientPid, const char* reason) { 1943 // Log the device removal 1944 logEvent(String8::format("DIED client(s) with PID %d, reason: (%s)", clientPid, reason)); 1945} 1946 1947void CameraService::logServiceError(const char* msg, int errorCode) { 1948 String8 curTime = getFormattedCurrentTime(); 1949 logEvent(String8::format("SERVICE ERROR: %s : %d (%s)", msg, errorCode, strerror(-errorCode))); 1950} 1951 1952status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply, 1953 uint32_t flags) { 1954 1955 const int pid = getCallingPid(); 1956 const int selfPid = getpid(); 1957 1958 // Permission checks 1959 switch (code) { 1960 case BnCameraService::NOTIFYSYSTEMEVENT: { 1961 if (pid != selfPid) { 1962 // Ensure we're being called by system_server, or similar process with 1963 // permissions to notify the camera service about system events 1964 if (!checkCallingPermission( 1965 String16("android.permission.CAMERA_SEND_SYSTEM_EVENTS"))) { 1966 const int uid = getCallingUid(); 1967 ALOGE("Permission Denial: cannot send updates to camera service about system" 1968 " events from pid=%d, uid=%d", pid, uid); 1969 return PERMISSION_DENIED; 1970 } 1971 } 1972 break; 1973 } 1974 } 1975 1976 return BnCameraService::onTransact(code, data, reply, flags); 1977} 1978 1979// We share the media players for shutter and recording sound for all clients. 1980// A reference count is kept to determine when we will actually release the 1981// media players. 1982 1983MediaPlayer* CameraService::newMediaPlayer(const char *file) { 1984 MediaPlayer* mp = new MediaPlayer(); 1985 if (mp->setDataSource(NULL /* httpService */, file, NULL) == NO_ERROR) { 1986 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 1987 mp->prepare(); 1988 } else { 1989 ALOGE("Failed to load CameraService sounds: %s", file); 1990 return NULL; 1991 } 1992 return mp; 1993} 1994 1995void CameraService::loadSound() { 1996 ATRACE_CALL(); 1997 1998 Mutex::Autolock lock(mSoundLock); 1999 LOG1("CameraService::loadSound ref=%d", mSoundRef); 2000 if (mSoundRef++) return; 2001 2002 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 2003 mSoundPlayer[SOUND_RECORDING_START] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 2004 mSoundPlayer[SOUND_RECORDING_STOP] = newMediaPlayer("/system/media/audio/ui/VideoStop.ogg"); 2005} 2006 2007void CameraService::releaseSound() { 2008 Mutex::Autolock lock(mSoundLock); 2009 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 2010 if (--mSoundRef) return; 2011 2012 for (int i = 0; i < NUM_SOUNDS; i++) { 2013 if (mSoundPlayer[i] != 0) { 2014 mSoundPlayer[i]->disconnect(); 2015 mSoundPlayer[i].clear(); 2016 } 2017 } 2018} 2019 2020void CameraService::playSound(sound_kind kind) { 2021 ATRACE_CALL(); 2022 2023 LOG1("playSound(%d)", kind); 2024 Mutex::Autolock lock(mSoundLock); 2025 sp<MediaPlayer> player = mSoundPlayer[kind]; 2026 if (player != 0) { 2027 player->seekTo(0); 2028 player->start(); 2029 } 2030} 2031 2032// ---------------------------------------------------------------------------- 2033 2034CameraService::Client::Client(const sp<CameraService>& cameraService, 2035 const sp<ICameraClient>& cameraClient, 2036 const String16& clientPackageName, 2037 int cameraId, int cameraFacing, 2038 int clientPid, uid_t clientUid, 2039 int servicePid) : 2040 CameraService::BasicClient(cameraService, 2041 IInterface::asBinder(cameraClient), 2042 clientPackageName, 2043 cameraId, cameraFacing, 2044 clientPid, clientUid, 2045 servicePid) 2046{ 2047 int callingPid = getCallingPid(); 2048 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 2049 2050 mRemoteCallback = cameraClient; 2051 2052 cameraService->loadSound(); 2053 2054 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 2055} 2056 2057// tear down the client 2058CameraService::Client::~Client() { 2059 ALOGV("~Client"); 2060 mDestructionStarted = true; 2061 2062 mCameraService->releaseSound(); 2063 // unconditionally disconnect. function is idempotent 2064 Client::disconnect(); 2065} 2066 2067CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 2068 const sp<IBinder>& remoteCallback, 2069 const String16& clientPackageName, 2070 int cameraId, int cameraFacing, 2071 int clientPid, uid_t clientUid, 2072 int servicePid): 2073 mClientPackageName(clientPackageName), mDisconnected(false) 2074{ 2075 mCameraService = cameraService; 2076 mRemoteBinder = remoteCallback; 2077 mCameraId = cameraId; 2078 mCameraFacing = cameraFacing; 2079 mClientPid = clientPid; 2080 mClientUid = clientUid; 2081 mServicePid = servicePid; 2082 mOpsActive = false; 2083 mDestructionStarted = false; 2084 2085 // In some cases the calling code has no access to the package it runs under. 2086 // For example, NDK camera API. 2087 // In this case we will get the packages for the calling UID and pick the first one 2088 // for attributing the app op. This will work correctly for runtime permissions 2089 // as for legacy apps we will toggle the app op for all packages in the UID. 2090 // The caveat is that the operation may be attributed to the wrong package and 2091 // stats based on app ops may be slightly off. 2092 if (mClientPackageName.size() <= 0) { 2093 sp<IServiceManager> sm = defaultServiceManager(); 2094 sp<IBinder> binder = sm->getService(String16(kPermissionServiceName)); 2095 if (binder == 0) { 2096 ALOGE("Cannot get permission service"); 2097 // Leave mClientPackageName unchanged (empty) and the further interaction 2098 // with camera will fail in BasicClient::startCameraOps 2099 return; 2100 } 2101 2102 sp<IPermissionController> permCtrl = interface_cast<IPermissionController>(binder); 2103 Vector<String16> packages; 2104 2105 permCtrl->getPackagesForUid(mClientUid, packages); 2106 2107 if (packages.isEmpty()) { 2108 ALOGE("No packages for calling UID"); 2109 // Leave mClientPackageName unchanged (empty) and the further interaction 2110 // with camera will fail in BasicClient::startCameraOps 2111 return; 2112 } 2113 mClientPackageName = packages[0]; 2114 } 2115} 2116 2117CameraService::BasicClient::~BasicClient() { 2118 ALOGV("~BasicClient"); 2119 mDestructionStarted = true; 2120} 2121 2122binder::Status CameraService::BasicClient::disconnect() { 2123 binder::Status res = Status::ok(); 2124 if (mDisconnected) { 2125 return res; 2126 } 2127 mDisconnected = true; 2128 2129 mCameraService->removeByClient(this); 2130 mCameraService->logDisconnected(String8::format("%d", mCameraId), mClientPid, 2131 String8(mClientPackageName)); 2132 2133 sp<IBinder> remote = getRemote(); 2134 if (remote != nullptr) { 2135 remote->unlinkToDeath(mCameraService); 2136 } 2137 2138 finishCameraOps(); 2139 ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid); 2140 2141 // client shouldn't be able to call into us anymore 2142 mClientPid = 0; 2143 2144 return res; 2145} 2146 2147status_t CameraService::BasicClient::dump(int, const Vector<String16>&) { 2148 // No dumping of clients directly over Binder, 2149 // must go through CameraService::dump 2150 android_errorWriteWithInfoLog(SN_EVENT_LOG_ID, "26265403", 2151 IPCThreadState::self()->getCallingUid(), NULL, 0); 2152 return OK; 2153} 2154 2155String16 CameraService::BasicClient::getPackageName() const { 2156 return mClientPackageName; 2157} 2158 2159 2160int CameraService::BasicClient::getClientPid() const { 2161 return mClientPid; 2162} 2163 2164uid_t CameraService::BasicClient::getClientUid() const { 2165 return mClientUid; 2166} 2167 2168bool CameraService::BasicClient::canCastToApiClient(apiLevel level) const { 2169 // Defaults to API2. 2170 return level == API_2; 2171} 2172 2173status_t CameraService::BasicClient::startCameraOps() { 2174 ATRACE_CALL(); 2175 2176 int32_t res; 2177 // Notify app ops that the camera is not available 2178 mOpsCallback = new OpsCallback(this); 2179 2180 { 2181 ALOGV("%s: Start camera ops, package name = %s, client UID = %d", 2182 __FUNCTION__, String8(mClientPackageName).string(), mClientUid); 2183 } 2184 2185 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 2186 mClientPackageName, mOpsCallback); 2187 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 2188 mClientUid, mClientPackageName); 2189 2190 if (res == AppOpsManager::MODE_ERRORED) { 2191 ALOGI("Camera %d: Access for \"%s\" has been revoked", 2192 mCameraId, String8(mClientPackageName).string()); 2193 return PERMISSION_DENIED; 2194 } 2195 2196 if (res == AppOpsManager::MODE_IGNORED) { 2197 ALOGI("Camera %d: Access for \"%s\" has been restricted", 2198 mCameraId, String8(mClientPackageName).string()); 2199 // Return the same error as for device policy manager rejection 2200 return -EACCES; 2201 } 2202 2203 mOpsActive = true; 2204 2205 // Transition device availability listeners from PRESENT -> NOT_AVAILABLE 2206 mCameraService->updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 2207 String8::format("%d", mCameraId)); 2208 2209 // Transition device state to OPEN 2210 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_OPEN, 2211 String8::format("%d", mCameraId)); 2212 2213 return OK; 2214} 2215 2216status_t CameraService::BasicClient::finishCameraOps() { 2217 ATRACE_CALL(); 2218 2219 // Check if startCameraOps succeeded, and if so, finish the camera op 2220 if (mOpsActive) { 2221 // Notify app ops that the camera is available again 2222 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 2223 mClientPackageName); 2224 mOpsActive = false; 2225 2226 std::initializer_list<int32_t> rejected = {ICameraServiceListener::STATUS_NOT_PRESENT, 2227 ICameraServiceListener::STATUS_ENUMERATING}; 2228 2229 // Transition to PRESENT if the camera is not in either of the rejected states 2230 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, 2231 String8::format("%d", mCameraId), rejected); 2232 2233 // Transition device state to CLOSED 2234 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_CLOSED, 2235 String8::format("%d", mCameraId)); 2236 2237 // Notify flashlight that a camera device is closed. 2238 mCameraService->mFlashlight->deviceClosed( 2239 String8::format("%d", mCameraId)); 2240 } 2241 // Always stop watching, even if no camera op is active 2242 if (mOpsCallback != NULL) { 2243 mAppOpsManager.stopWatchingMode(mOpsCallback); 2244 } 2245 mOpsCallback.clear(); 2246 2247 return OK; 2248} 2249 2250void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 2251 ATRACE_CALL(); 2252 2253 String8 name(packageName); 2254 String8 myName(mClientPackageName); 2255 2256 if (op != AppOpsManager::OP_CAMERA) { 2257 ALOGW("Unexpected app ops notification received: %d", op); 2258 return; 2259 } 2260 2261 int32_t res; 2262 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 2263 mClientUid, mClientPackageName); 2264 ALOGV("checkOp returns: %d, %s ", res, 2265 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 2266 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 2267 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 2268 "UNKNOWN"); 2269 2270 if (res != AppOpsManager::MODE_ALLOWED) { 2271 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 2272 myName.string()); 2273 // Reset the client PID to allow server-initiated disconnect, 2274 // and to prevent further calls by client. 2275 mClientPid = getCallingPid(); 2276 CaptureResultExtras resultExtras; // a dummy result (invalid) 2277 notifyError(hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE, resultExtras); 2278 disconnect(); 2279 } 2280} 2281 2282// ---------------------------------------------------------------------------- 2283 2284// Provide client strong pointer for callbacks. 2285sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) { 2286 String8 cameraId = String8::format("%d", (int)(intptr_t) user); 2287 auto clientDescriptor = gCameraService->mActiveClientManager.get(cameraId); 2288 if (clientDescriptor != nullptr) { 2289 return sp<Client>{ 2290 static_cast<Client*>(clientDescriptor->getValue().get())}; 2291 } 2292 return sp<Client>{nullptr}; 2293} 2294 2295void CameraService::Client::notifyError(int32_t errorCode, 2296 const CaptureResultExtras& resultExtras) { 2297 (void) errorCode; 2298 (void) resultExtras; 2299 if (mRemoteCallback != NULL) { 2300 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 2301 } else { 2302 ALOGE("mRemoteCallback is NULL!!"); 2303 } 2304} 2305 2306// NOTE: function is idempotent 2307binder::Status CameraService::Client::disconnect() { 2308 ALOGV("Client::disconnect"); 2309 return BasicClient::disconnect(); 2310} 2311 2312bool CameraService::Client::canCastToApiClient(apiLevel level) const { 2313 return level == API_1; 2314} 2315 2316CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 2317 mClient(client) { 2318} 2319 2320void CameraService::Client::OpsCallback::opChanged(int32_t op, 2321 const String16& packageName) { 2322 sp<BasicClient> client = mClient.promote(); 2323 if (client != NULL) { 2324 client->opChanged(op, packageName); 2325 } 2326} 2327 2328// ---------------------------------------------------------------------------- 2329// CameraState 2330// ---------------------------------------------------------------------------- 2331 2332CameraService::CameraState::CameraState(const String8& id, int cost, 2333 const std::set<String8>& conflicting) : mId(id), 2334 mStatus(ICameraServiceListener::STATUS_PRESENT), mCost(cost), mConflicting(conflicting) {} 2335 2336CameraService::CameraState::~CameraState() {} 2337 2338int32_t CameraService::CameraState::getStatus() const { 2339 Mutex::Autolock lock(mStatusLock); 2340 return mStatus; 2341} 2342 2343CameraParameters CameraService::CameraState::getShimParams() const { 2344 return mShimParams; 2345} 2346 2347void CameraService::CameraState::setShimParams(const CameraParameters& params) { 2348 mShimParams = params; 2349} 2350 2351int CameraService::CameraState::getCost() const { 2352 return mCost; 2353} 2354 2355std::set<String8> CameraService::CameraState::getConflicting() const { 2356 return mConflicting; 2357} 2358 2359String8 CameraService::CameraState::getId() const { 2360 return mId; 2361} 2362 2363// ---------------------------------------------------------------------------- 2364// ClientEventListener 2365// ---------------------------------------------------------------------------- 2366 2367void CameraService::ClientEventListener::onClientAdded( 2368 const resource_policy::ClientDescriptor<String8, 2369 sp<CameraService::BasicClient>>& descriptor) { 2370 const auto& basicClient = descriptor.getValue(); 2371 if (basicClient.get() != nullptr) { 2372 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2373 notifier.noteStartCamera(descriptor.getKey(), 2374 static_cast<int>(basicClient->getClientUid())); 2375 } 2376} 2377 2378void CameraService::ClientEventListener::onClientRemoved( 2379 const resource_policy::ClientDescriptor<String8, 2380 sp<CameraService::BasicClient>>& descriptor) { 2381 const auto& basicClient = descriptor.getValue(); 2382 if (basicClient.get() != nullptr) { 2383 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2384 notifier.noteStopCamera(descriptor.getKey(), 2385 static_cast<int>(basicClient->getClientUid())); 2386 } 2387} 2388 2389 2390// ---------------------------------------------------------------------------- 2391// CameraClientManager 2392// ---------------------------------------------------------------------------- 2393 2394CameraService::CameraClientManager::CameraClientManager() { 2395 setListener(std::make_shared<ClientEventListener>()); 2396} 2397 2398CameraService::CameraClientManager::~CameraClientManager() {} 2399 2400sp<CameraService::BasicClient> CameraService::CameraClientManager::getCameraClient( 2401 const String8& id) const { 2402 auto descriptor = get(id); 2403 if (descriptor == nullptr) { 2404 return sp<BasicClient>{nullptr}; 2405 } 2406 return descriptor->getValue(); 2407} 2408 2409String8 CameraService::CameraClientManager::toString() const { 2410 auto all = getAll(); 2411 String8 ret("["); 2412 bool hasAny = false; 2413 for (auto& i : all) { 2414 hasAny = true; 2415 String8 key = i->getKey(); 2416 int32_t cost = i->getCost(); 2417 int32_t pid = i->getOwnerId(); 2418 int32_t priority = i->getPriority(); 2419 auto conflicting = i->getConflicting(); 2420 auto clientSp = i->getValue(); 2421 String8 packageName; 2422 userid_t clientUserId = 0; 2423 if (clientSp.get() != nullptr) { 2424 packageName = String8{clientSp->getPackageName()}; 2425 uid_t clientUid = clientSp->getClientUid(); 2426 clientUserId = multiuser_get_user_id(clientUid); 2427 } 2428 ret.appendFormat("\n(Camera ID: %s, Cost: %" PRId32 ", PID: %" PRId32 ", Priority: %" 2429 PRId32 ", ", key.string(), cost, pid, priority); 2430 2431 if (clientSp.get() != nullptr) { 2432 ret.appendFormat("User Id: %d, ", clientUserId); 2433 } 2434 if (packageName.size() != 0) { 2435 ret.appendFormat("Client Package Name: %s", packageName.string()); 2436 } 2437 2438 ret.append(", Conflicting Client Devices: {"); 2439 for (auto& j : conflicting) { 2440 ret.appendFormat("%s, ", j.string()); 2441 } 2442 ret.append("})"); 2443 } 2444 if (hasAny) ret.append("\n"); 2445 ret.append("]\n"); 2446 return ret; 2447} 2448 2449CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2450 const String8& key, const sp<BasicClient>& value, int32_t cost, 2451 const std::set<String8>& conflictingKeys, int32_t priority, int32_t ownerId) { 2452 2453 return std::make_shared<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>( 2454 key, value, cost, conflictingKeys, priority, ownerId); 2455} 2456 2457CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2458 const sp<BasicClient>& value, const CameraService::DescriptorPtr& partial) { 2459 return makeClientDescriptor(partial->getKey(), value, partial->getCost(), 2460 partial->getConflicting(), partial->getPriority(), partial->getOwnerId()); 2461} 2462 2463// ---------------------------------------------------------------------------- 2464 2465static const int kDumpLockRetries = 50; 2466static const int kDumpLockSleep = 60000; 2467 2468static bool tryLock(Mutex& mutex) 2469{ 2470 bool locked = false; 2471 for (int i = 0; i < kDumpLockRetries; ++i) { 2472 if (mutex.tryLock() == NO_ERROR) { 2473 locked = true; 2474 break; 2475 } 2476 usleep(kDumpLockSleep); 2477 } 2478 return locked; 2479} 2480 2481status_t CameraService::dump(int fd, const Vector<String16>& args) { 2482 ATRACE_CALL(); 2483 2484 String8 result("Dump of the Camera Service:\n"); 2485 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 2486 result = result.format("Permission Denial: " 2487 "can't dump CameraService from pid=%d, uid=%d\n", 2488 getCallingPid(), 2489 getCallingUid()); 2490 write(fd, result.string(), result.size()); 2491 } else { 2492 bool locked = tryLock(mServiceLock); 2493 // failed to lock - CameraService is probably deadlocked 2494 if (!locked) { 2495 result.append("CameraService may be deadlocked\n"); 2496 write(fd, result.string(), result.size()); 2497 } 2498 2499 bool hasClient = false; 2500 if (!mModule) { 2501 result = String8::format("No camera module available!\n"); 2502 write(fd, result.string(), result.size()); 2503 2504 // Dump event log for error information 2505 dumpEventLog(fd); 2506 2507 if (locked) mServiceLock.unlock(); 2508 return NO_ERROR; 2509 } 2510 2511 result = String8::format("Camera module HAL API version: 0x%x\n", mModule->getHalApiVersion()); 2512 result.appendFormat("Camera module API version: 0x%x\n", mModule->getModuleApiVersion()); 2513 result.appendFormat("Camera module name: %s\n", mModule->getModuleName()); 2514 result.appendFormat("Camera module author: %s\n", mModule->getModuleAuthor()); 2515 result.appendFormat("Number of camera devices: %d\n", mNumberOfCameras); 2516 result.appendFormat("Number of normal camera devices: %d\n", mNumberOfNormalCameras); 2517 String8 activeClientString = mActiveClientManager.toString(); 2518 result.appendFormat("Active Camera Clients:\n%s", activeClientString.string()); 2519 result.appendFormat("Allowed users:\n%s\n", toString(mAllowedUsers).string()); 2520 2521 sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 2522 if (desc == NULL) { 2523 result.appendFormat("Vendor tags left unimplemented.\n"); 2524 } else { 2525 result.appendFormat("Vendor tag definitions:\n"); 2526 } 2527 2528 write(fd, result.string(), result.size()); 2529 2530 if (desc != NULL) { 2531 desc->dump(fd, /*verbosity*/2, /*indentation*/4); 2532 } 2533 2534 dumpEventLog(fd); 2535 2536 bool stateLocked = tryLock(mCameraStatesLock); 2537 if (!stateLocked) { 2538 result = String8::format("CameraStates in use, may be deadlocked\n"); 2539 write(fd, result.string(), result.size()); 2540 } 2541 2542 for (auto& state : mCameraStates) { 2543 String8 cameraId = state.first; 2544 result = String8::format("Camera %s information:\n", cameraId.string()); 2545 camera_info info; 2546 2547 // TODO: Change getCameraInfo + HAL to use String cameraIds 2548 status_t rc = mModule->getCameraInfo(cameraIdToInt(cameraId), &info); 2549 if (rc != OK) { 2550 result.appendFormat(" Error reading static information!\n"); 2551 write(fd, result.string(), result.size()); 2552 } else { 2553 result.appendFormat(" Facing: %s\n", 2554 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 2555 result.appendFormat(" Orientation: %d\n", info.orientation); 2556 int deviceVersion; 2557 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0) { 2558 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 2559 } else { 2560 deviceVersion = info.device_version; 2561 } 2562 2563 auto conflicting = state.second->getConflicting(); 2564 result.appendFormat(" Resource Cost: %d\n", state.second->getCost()); 2565 result.appendFormat(" Conflicting Devices:"); 2566 for (auto& id : conflicting) { 2567 result.appendFormat(" %s", id.string()); 2568 } 2569 if (conflicting.size() == 0) { 2570 result.appendFormat(" NONE"); 2571 } 2572 result.appendFormat("\n"); 2573 2574 result.appendFormat(" Device version: %#x\n", deviceVersion); 2575 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_3_0) { 2576 result.appendFormat(" Device static metadata:\n"); 2577 write(fd, result.string(), result.size()); 2578 dump_indented_camera_metadata(info.static_camera_characteristics, 2579 fd, /*verbosity*/2, /*indentation*/4); 2580 } else { 2581 write(fd, result.string(), result.size()); 2582 } 2583 2584 CameraParameters p = state.second->getShimParams(); 2585 if (!p.isEmpty()) { 2586 result = String8::format(" Camera1 API shim is using parameters:\n "); 2587 write(fd, result.string(), result.size()); 2588 p.dump(fd, args); 2589 } 2590 } 2591 2592 auto clientDescriptor = mActiveClientManager.get(cameraId); 2593 if (clientDescriptor == nullptr) { 2594 result = String8::format(" Device %s is closed, no client instance\n", 2595 cameraId.string()); 2596 write(fd, result.string(), result.size()); 2597 continue; 2598 } 2599 hasClient = true; 2600 result = String8::format(" Device %s is open. Client instance dump:\n\n", 2601 cameraId.string()); 2602 result.appendFormat("Client priority level: %d\n", clientDescriptor->getPriority()); 2603 result.appendFormat("Client PID: %d\n", clientDescriptor->getOwnerId()); 2604 2605 auto client = clientDescriptor->getValue(); 2606 result.appendFormat("Client package: %s\n", 2607 String8(client->getPackageName()).string()); 2608 write(fd, result.string(), result.size()); 2609 2610 client->dumpClient(fd, args); 2611 } 2612 2613 if (stateLocked) mCameraStatesLock.unlock(); 2614 2615 if (!hasClient) { 2616 result = String8::format("\nNo active camera clients yet.\n"); 2617 write(fd, result.string(), result.size()); 2618 } 2619 2620 if (locked) mServiceLock.unlock(); 2621 2622 // Dump camera traces if there were any 2623 write(fd, "\n", 1); 2624 camera3::CameraTraces::dump(fd, args); 2625 2626 // Process dump arguments, if any 2627 int n = args.size(); 2628 String16 verboseOption("-v"); 2629 String16 unreachableOption("--unreachable"); 2630 for (int i = 0; i < n; i++) { 2631 if (args[i] == verboseOption) { 2632 // change logging level 2633 if (i + 1 >= n) continue; 2634 String8 levelStr(args[i+1]); 2635 int level = atoi(levelStr.string()); 2636 result = String8::format("\nSetting log level to %d.\n", level); 2637 setLogLevel(level); 2638 write(fd, result.string(), result.size()); 2639 } else if (args[i] == unreachableOption) { 2640 // Dump memory analysis 2641 // TODO - should limit be an argument parameter? 2642 UnreachableMemoryInfo info; 2643 bool success = GetUnreachableMemory(info, /*limit*/ 10000); 2644 if (!success) { 2645 dprintf(fd, "\nUnable to dump unreachable memory. " 2646 "Try disabling SELinux enforcement.\n"); 2647 } else { 2648 dprintf(fd, "\nDumping unreachable memory:\n"); 2649 std::string s = info.ToString(/*log_contents*/ true); 2650 write(fd, s.c_str(), s.size()); 2651 } 2652 } 2653 } 2654 } 2655 return NO_ERROR; 2656} 2657 2658void CameraService::dumpEventLog(int fd) { 2659 String8 result = String8("\nPrior client events (most recent at top):\n"); 2660 2661 Mutex::Autolock l(mLogLock); 2662 for (const auto& msg : mEventLog) { 2663 result.appendFormat(" %s\n", msg.string()); 2664 } 2665 2666 if (mEventLog.size() == DEFAULT_EVENT_LOG_LENGTH) { 2667 result.append(" ...\n"); 2668 } else if (mEventLog.size() == 0) { 2669 result.append(" [no events yet]\n"); 2670 } 2671 result.append("\n"); 2672 2673 write(fd, result.string(), result.size()); 2674} 2675 2676void CameraService::handleTorchClientBinderDied(const wp<IBinder> &who) { 2677 Mutex::Autolock al(mTorchClientMapMutex); 2678 for (size_t i = 0; i < mTorchClientMap.size(); i++) { 2679 if (mTorchClientMap[i] == who) { 2680 // turn off the torch mode that was turned on by dead client 2681 String8 cameraId = mTorchClientMap.keyAt(i); 2682 status_t res = mFlashlight->setTorchMode(cameraId, false); 2683 if (res) { 2684 ALOGE("%s: torch client died but couldn't turn off torch: " 2685 "%s (%d)", __FUNCTION__, strerror(-res), res); 2686 return; 2687 } 2688 mTorchClientMap.removeItemsAt(i); 2689 break; 2690 } 2691 } 2692} 2693 2694/*virtual*/void CameraService::binderDied(const wp<IBinder> &who) { 2695 2696 /** 2697 * While tempting to promote the wp<IBinder> into a sp, it's actually not supported by the 2698 * binder driver 2699 */ 2700 2701 logClientDied(getCallingPid(), String8("Binder died unexpectedly")); 2702 2703 // check torch client 2704 handleTorchClientBinderDied(who); 2705 2706 // check camera device client 2707 if(!evictClientIdByRemote(who)) { 2708 ALOGV("%s: Java client's binder death already cleaned up (normal case)", __FUNCTION__); 2709 return; 2710 } 2711 2712 ALOGE("%s: Java client's binder died, removing it from the list of active clients", 2713 __FUNCTION__); 2714} 2715 2716void CameraService::updateStatus(int32_t status, const String8& cameraId) { 2717 updateStatus(status, cameraId, {}); 2718} 2719 2720void CameraService::updateStatus(int32_t status, const String8& cameraId, 2721 std::initializer_list<int32_t> rejectSourceStates) { 2722 // Do not lock mServiceLock here or can get into a deadlock from 2723 // connect() -> disconnect -> updateStatus 2724 2725 auto state = getCameraState(cameraId); 2726 2727 if (state == nullptr) { 2728 ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__, 2729 cameraId.string()); 2730 return; 2731 } 2732 2733 // Update the status for this camera state, then send the onStatusChangedCallbacks to each 2734 // of the listeners with both the mStatusStatus and mStatusListenerLock held 2735 state->updateStatus(status, cameraId, rejectSourceStates, [this] 2736 (const String8& cameraId, int32_t status) { 2737 2738 if (status != ICameraServiceListener::STATUS_ENUMERATING) { 2739 // Update torch status if it has a flash unit. 2740 Mutex::Autolock al(mTorchStatusMutex); 2741 int32_t torchStatus; 2742 if (getTorchStatusLocked(cameraId, &torchStatus) != 2743 NAME_NOT_FOUND) { 2744 int32_t newTorchStatus = 2745 status == ICameraServiceListener::STATUS_PRESENT ? 2746 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF : 2747 ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 2748 if (torchStatus != newTorchStatus) { 2749 onTorchStatusChangedLocked(cameraId, newTorchStatus); 2750 } 2751 } 2752 } 2753 2754 Mutex::Autolock lock(mStatusListenerLock); 2755 2756 for (auto& listener : mListenerList) { 2757 // TODO: Refactor status listeners to use strings for Camera IDs and remove this. 2758 int id = cameraIdToInt(cameraId); 2759 if (id != -1) listener->onStatusChanged(status, id); 2760 } 2761 }); 2762} 2763 2764void CameraService::updateProxyDeviceState(ICameraServiceProxy::CameraState newState, 2765 const String8& cameraId) { 2766 sp<ICameraServiceProxy> proxyBinder = getCameraServiceProxy(); 2767 if (proxyBinder == nullptr) return; 2768 String16 id(cameraId); 2769 proxyBinder->notifyCameraState(id, newState); 2770} 2771 2772status_t CameraService::getTorchStatusLocked( 2773 const String8& cameraId, 2774 int32_t *status) const { 2775 if (!status) { 2776 return BAD_VALUE; 2777 } 2778 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2779 if (index == NAME_NOT_FOUND) { 2780 // invalid camera ID or the camera doesn't have a flash unit 2781 return NAME_NOT_FOUND; 2782 } 2783 2784 *status = mTorchStatusMap.valueAt(index); 2785 return OK; 2786} 2787 2788status_t CameraService::setTorchStatusLocked(const String8& cameraId, 2789 int32_t status) { 2790 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2791 if (index == NAME_NOT_FOUND) { 2792 return BAD_VALUE; 2793 } 2794 int32_t& item = 2795 mTorchStatusMap.editValueAt(index); 2796 item = status; 2797 2798 return OK; 2799} 2800 2801}; // namespace android 2802