CameraService.cpp revision 4f9576bf48c5909782c12490e8a9faa974ae68d6
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define LOG_TAG "CameraService" 18//#define LOG_NDEBUG 0 19 20#include <algorithm> 21#include <climits> 22#include <stdio.h> 23#include <cstring> 24#include <ctime> 25#include <string> 26#include <sys/types.h> 27#include <inttypes.h> 28#include <pthread.h> 29 30#include <binder/AppOpsManager.h> 31#include <binder/IPCThreadState.h> 32#include <binder/IServiceManager.h> 33#include <binder/MemoryBase.h> 34#include <binder/MemoryHeapBase.h> 35#include <binder/ProcessInfoService.h> 36#include <cutils/atomic.h> 37#include <cutils/properties.h> 38#include <gui/Surface.h> 39#include <hardware/hardware.h> 40#include <media/AudioSystem.h> 41#include <media/IMediaHTTPService.h> 42#include <media/mediaplayer.h> 43#include <utils/Errors.h> 44#include <utils/Log.h> 45#include <utils/String16.h> 46#include <utils/Trace.h> 47#include <system/camera_vendor_tags.h> 48#include <system/camera_metadata.h> 49#include <system/camera.h> 50 51#include "CameraService.h" 52#include "api1/CameraClient.h" 53#include "api1/Camera2Client.h" 54#include "api2/CameraDeviceClient.h" 55#include "utils/CameraTraces.h" 56#include "CameraDeviceFactory.h" 57 58namespace android { 59 60// ---------------------------------------------------------------------------- 61// Logging support -- this is for debugging only 62// Use "adb shell dumpsys media.camera -v 1" to change it. 63volatile int32_t gLogLevel = 0; 64 65#define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__); 66#define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__); 67 68static void setLogLevel(int level) { 69 android_atomic_write(level, &gLogLevel); 70} 71 72// ---------------------------------------------------------------------------- 73 74extern "C" { 75static void camera_device_status_change( 76 const struct camera_module_callbacks* callbacks, 77 int camera_id, 78 int new_status) { 79 sp<CameraService> cs = const_cast<CameraService*>( 80 static_cast<const CameraService*>(callbacks)); 81 82 cs->onDeviceStatusChanged(static_cast<camera_device_status_t>(camera_id), 83 static_cast<camera_device_status_t>(new_status)); 84} 85 86static void torch_mode_status_change( 87 const struct camera_module_callbacks* callbacks, 88 const char* camera_id, 89 int new_status) { 90 if (!callbacks || !camera_id) { 91 ALOGE("%s invalid parameters. callbacks %p, camera_id %p", __FUNCTION__, 92 callbacks, camera_id); 93 } 94 sp<CameraService> cs = const_cast<CameraService*>( 95 static_cast<const CameraService*>(callbacks)); 96 97 ICameraServiceListener::TorchStatus status; 98 switch (new_status) { 99 case TORCH_MODE_STATUS_NOT_AVAILABLE: 100 status = ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 101 break; 102 case TORCH_MODE_STATUS_AVAILABLE_OFF: 103 status = ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF; 104 break; 105 case TORCH_MODE_STATUS_AVAILABLE_ON: 106 status = ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON; 107 break; 108 default: 109 ALOGE("Unknown torch status %d", new_status); 110 return; 111 } 112 113 cs->onTorchStatusChanged( 114 String8(camera_id), 115 status); 116} 117} // extern "C" 118 119// ---------------------------------------------------------------------------- 120 121// This is ugly and only safe if we never re-create the CameraService, but 122// should be ok for now. 123static CameraService *gCameraService; 124 125CameraService::CameraService() : mEventLog(DEFAULT_EVENT_LOG_LENGTH), 126 mLastUserId(DEFAULT_LAST_USER_ID), mSoundRef(0), mModule(0), mFlashlight(0) { 127 ALOGI("CameraService started (pid=%d)", getpid()); 128 gCameraService = this; 129 130 this->camera_device_status_change = android::camera_device_status_change; 131 this->torch_mode_status_change = android::torch_mode_status_change; 132 133 mServiceLockWrapper = std::make_shared<WaitableMutexWrapper>(&mServiceLock); 134} 135 136void CameraService::onFirstRef() 137{ 138 ALOGI("CameraService process starting"); 139 140 BnCameraService::onFirstRef(); 141 142 camera_module_t *rawModule; 143 if (hw_get_module(CAMERA_HARDWARE_MODULE_ID, 144 (const hw_module_t **)&rawModule) < 0) { 145 ALOGE("Could not load camera HAL module"); 146 mNumberOfCameras = 0; 147 } 148 else { 149 mModule = new CameraModule(rawModule); 150 ALOGI("Loaded \"%s\" camera module", mModule->getModuleName()); 151 mNumberOfCameras = mModule->getNumberOfCameras(); 152 153 mFlashlight = new CameraFlashlight(*mModule, *this); 154 status_t res = mFlashlight->findFlashUnits(); 155 if (res) { 156 // impossible because we haven't open any camera devices. 157 ALOGE("Failed to find flash units."); 158 } 159 160 for (int i = 0; i < mNumberOfCameras; i++) { 161 String8 cameraId = String8::format("%d", i); 162 163 // Defaults to use for cost and conflicting devices 164 int cost = 100; 165 char** conflicting_devices = nullptr; 166 size_t conflicting_devices_length = 0; 167 168 // If using post-2.4 module version, query the cost + conflicting devices from the HAL 169 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_4) { 170 struct camera_info info; 171 status_t rc = mModule->getCameraInfo(i, &info); 172 if (rc == NO_ERROR) { 173 cost = info.resource_cost; 174 conflicting_devices = info.conflicting_devices; 175 conflicting_devices_length = info.conflicting_devices_length; 176 } else { 177 ALOGE("%s: Received error loading camera info for device %d, cost and" 178 " conflicting devices fields set to defaults for this device.", 179 __FUNCTION__, i); 180 } 181 } 182 183 std::set<String8> conflicting; 184 for (size_t i = 0; i < conflicting_devices_length; i++) { 185 conflicting.emplace(String8(conflicting_devices[i])); 186 } 187 188 // Initialize state for each camera device 189 { 190 Mutex::Autolock lock(mCameraStatesLock); 191 mCameraStates.emplace(cameraId, std::make_shared<CameraState>(cameraId, cost, 192 conflicting)); 193 } 194 195 if (mFlashlight->hasFlashUnit(cameraId)) { 196 mTorchStatusMap.add(cameraId, 197 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF); 198 } 199 } 200 201 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_1) { 202 mModule->setCallbacks(this); 203 } 204 205 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 206 207 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_2) { 208 setUpVendorTags(); 209 } 210 211 CameraDeviceFactory::registerService(this); 212 } 213} 214 215CameraService::~CameraService() { 216 if (mModule) { 217 delete mModule; 218 mModule = nullptr; 219 } 220 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 221 gCameraService = nullptr; 222} 223 224void CameraService::onDeviceStatusChanged(camera_device_status_t cameraId, 225 camera_device_status_t newStatus) { 226 ALOGI("%s: Status changed for cameraId=%d, newStatus=%d", __FUNCTION__, 227 cameraId, newStatus); 228 229 String8 id = String8::format("%d", cameraId); 230 std::shared_ptr<CameraState> state = getCameraState(id); 231 232 if (state == nullptr) { 233 ALOGE("%s: Bad camera ID %d", __FUNCTION__, cameraId); 234 return; 235 } 236 237 ICameraServiceListener::Status oldStatus = state->getStatus(); 238 239 if (oldStatus == static_cast<ICameraServiceListener::Status>(newStatus)) { 240 ALOGE("%s: State transition to the same status %#x not allowed", __FUNCTION__, newStatus); 241 return; 242 } 243 244 if (newStatus == CAMERA_DEVICE_STATUS_NOT_PRESENT) { 245 logDeviceRemoved(id, String8::format("Device status changed from %d to %d", oldStatus, 246 newStatus)); 247 sp<BasicClient> clientToDisconnect; 248 { 249 // Don't do this in updateStatus to avoid deadlock over mServiceLock 250 Mutex::Autolock lock(mServiceLock); 251 252 // Set the device status to NOT_PRESENT, clients will no longer be able to connect 253 // to this device until the status changes 254 updateStatus(ICameraServiceListener::STATUS_NOT_PRESENT, id); 255 256 // Remove cached shim parameters 257 state->setShimParams(CameraParameters()); 258 259 // Remove the client from the list of active clients 260 clientToDisconnect = removeClientLocked(id); 261 262 // Notify the client of disconnection 263 clientToDisconnect->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 264 CaptureResultExtras{}); 265 } 266 267 ALOGI("%s: Client for camera ID %s evicted due to device status change from HAL", 268 __FUNCTION__, id.string()); 269 270 // Disconnect client 271 if (clientToDisconnect.get() != nullptr) { 272 // Ensure not in binder RPC so client disconnect PID checks work correctly 273 LOG_ALWAYS_FATAL_IF(getCallingPid() != getpid(), 274 "onDeviceStatusChanged must be called from the camera service process!"); 275 clientToDisconnect->disconnect(); 276 } 277 278 } else { 279 if (oldStatus == ICameraServiceListener::Status::STATUS_NOT_PRESENT) { 280 logDeviceAdded(id, String8::format("Device status changed from %d to %d", oldStatus, 281 newStatus)); 282 } 283 updateStatus(static_cast<ICameraServiceListener::Status>(newStatus), id); 284 } 285 286} 287 288void CameraService::onTorchStatusChanged(const String8& cameraId, 289 ICameraServiceListener::TorchStatus newStatus) { 290 Mutex::Autolock al(mTorchStatusMutex); 291 onTorchStatusChangedLocked(cameraId, newStatus); 292} 293 294void CameraService::onTorchStatusChangedLocked(const String8& cameraId, 295 ICameraServiceListener::TorchStatus newStatus) { 296 ALOGI("%s: Torch status changed for cameraId=%s, newStatus=%d", 297 __FUNCTION__, cameraId.string(), newStatus); 298 299 ICameraServiceListener::TorchStatus status; 300 status_t res = getTorchStatusLocked(cameraId, &status); 301 if (res) { 302 ALOGE("%s: cannot get torch status of camera %s", cameraId.string()); 303 return; 304 } 305 if (status == newStatus) { 306 ALOGE("%s: Torch state transition to the same status 0x%x not allowed", 307 __FUNCTION__, (uint32_t)newStatus); 308 return; 309 } 310 311 res = setTorchStatusLocked(cameraId, newStatus); 312 if (res) { 313 ALOGE("%s: Failed to set the torch status", __FUNCTION__, 314 (uint32_t)newStatus); 315 return; 316 } 317 318 { 319 Mutex::Autolock lock(mStatusListenerLock); 320 for (auto& i : mListenerList) { 321 i->onTorchStatusChanged(newStatus, String16{cameraId}); 322 } 323 } 324} 325 326 327int32_t CameraService::getNumberOfCameras() { 328 return mNumberOfCameras; 329} 330 331status_t CameraService::getCameraInfo(int cameraId, 332 struct CameraInfo* cameraInfo) { 333 if (!mModule) { 334 return -ENODEV; 335 } 336 337 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 338 return BAD_VALUE; 339 } 340 341 struct camera_info info; 342 status_t rc = filterGetInfoErrorCode( 343 mModule->getCameraInfo(cameraId, &info)); 344 cameraInfo->facing = info.facing; 345 cameraInfo->orientation = info.orientation; 346 return rc; 347} 348 349int CameraService::cameraIdToInt(const String8& cameraId) { 350 errno = 0; 351 size_t pos = 0; 352 int ret = stoi(std::string{cameraId.string()}, &pos); 353 if (errno != 0 || pos != cameraId.size()) { 354 return -1; 355 } 356 return ret; 357} 358 359status_t CameraService::generateShimMetadata(int cameraId, /*out*/CameraMetadata* cameraInfo) { 360 status_t ret = OK; 361 struct CameraInfo info; 362 if ((ret = getCameraInfo(cameraId, &info)) != OK) { 363 return ret; 364 } 365 366 CameraMetadata shimInfo; 367 int32_t orientation = static_cast<int32_t>(info.orientation); 368 if ((ret = shimInfo.update(ANDROID_SENSOR_ORIENTATION, &orientation, 1)) != OK) { 369 return ret; 370 } 371 372 uint8_t facing = (info.facing == CAMERA_FACING_FRONT) ? 373 ANDROID_LENS_FACING_FRONT : ANDROID_LENS_FACING_BACK; 374 if ((ret = shimInfo.update(ANDROID_LENS_FACING, &facing, 1)) != OK) { 375 return ret; 376 } 377 378 CameraParameters shimParams; 379 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 380 // Error logged by callee 381 return ret; 382 } 383 384 Vector<Size> sizes; 385 Vector<Size> jpegSizes; 386 Vector<int32_t> formats; 387 const char* supportedPreviewFormats; 388 { 389 shimParams.getSupportedPreviewSizes(/*out*/sizes); 390 shimParams.getSupportedPreviewFormats(/*out*/formats); 391 shimParams.getSupportedPictureSizes(/*out*/jpegSizes); 392 } 393 394 // Always include IMPLEMENTATION_DEFINED 395 formats.add(HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED); 396 397 const size_t INTS_PER_CONFIG = 4; 398 399 // Build available stream configurations metadata 400 size_t streamConfigSize = (sizes.size() * formats.size() + jpegSizes.size()) * INTS_PER_CONFIG; 401 402 Vector<int32_t> streamConfigs; 403 streamConfigs.setCapacity(streamConfigSize); 404 405 for (size_t i = 0; i < formats.size(); ++i) { 406 for (size_t j = 0; j < sizes.size(); ++j) { 407 streamConfigs.add(formats[i]); 408 streamConfigs.add(sizes[j].width); 409 streamConfigs.add(sizes[j].height); 410 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 411 } 412 } 413 414 for (size_t i = 0; i < jpegSizes.size(); ++i) { 415 streamConfigs.add(HAL_PIXEL_FORMAT_BLOB); 416 streamConfigs.add(jpegSizes[i].width); 417 streamConfigs.add(jpegSizes[i].height); 418 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 419 } 420 421 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS, 422 streamConfigs.array(), streamConfigSize)) != OK) { 423 return ret; 424 } 425 426 int64_t fakeMinFrames[0]; 427 // TODO: Fixme, don't fake min frame durations. 428 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS, 429 fakeMinFrames, 0)) != OK) { 430 return ret; 431 } 432 433 int64_t fakeStalls[0]; 434 // TODO: Fixme, don't fake stall durations. 435 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STALL_DURATIONS, 436 fakeStalls, 0)) != OK) { 437 return ret; 438 } 439 440 *cameraInfo = shimInfo; 441 return OK; 442} 443 444status_t CameraService::getCameraCharacteristics(int cameraId, 445 CameraMetadata* cameraInfo) { 446 if (!cameraInfo) { 447 ALOGE("%s: cameraInfo is NULL", __FUNCTION__); 448 return BAD_VALUE; 449 } 450 451 if (!mModule) { 452 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 453 return -ENODEV; 454 } 455 456 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 457 ALOGE("%s: Invalid camera id: %d", __FUNCTION__, cameraId); 458 return BAD_VALUE; 459 } 460 461 int facing; 462 status_t ret = OK; 463 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0 || 464 getDeviceVersion(cameraId, &facing) <= CAMERA_DEVICE_API_VERSION_2_1 ) { 465 /** 466 * Backwards compatibility mode for old HALs: 467 * - Convert CameraInfo into static CameraMetadata properties. 468 * - Retrieve cached CameraParameters for this camera. If none exist, 469 * attempt to open CameraClient and retrieve the CameraParameters. 470 * - Convert cached CameraParameters into static CameraMetadata 471 * properties. 472 */ 473 ALOGI("%s: Switching to HAL1 shim implementation...", __FUNCTION__); 474 475 if ((ret = generateShimMetadata(cameraId, cameraInfo)) != OK) { 476 return ret; 477 } 478 479 } else { 480 /** 481 * Normal HAL 2.1+ codepath. 482 */ 483 struct camera_info info; 484 ret = filterGetInfoErrorCode(mModule->getCameraInfo(cameraId, &info)); 485 *cameraInfo = info.static_camera_characteristics; 486 } 487 488 return ret; 489} 490 491int CameraService::getCallingPid() { 492 return IPCThreadState::self()->getCallingPid(); 493} 494 495int CameraService::getCallingUid() { 496 return IPCThreadState::self()->getCallingUid(); 497} 498 499String8 CameraService::getFormattedCurrentTime() { 500 time_t now = time(nullptr); 501 char formattedTime[64]; 502 strftime(formattedTime, sizeof(formattedTime), "%m-%d %H:%M:%S", localtime(&now)); 503 return String8(formattedTime); 504} 505 506int CameraService::getCameraPriorityFromProcState(int procState) { 507 // Find the priority for the camera usage based on the process state. Higher priority clients 508 // win for evictions. 509 // Note: Unlike the ordering for ActivityManager, persistent system processes will always lose 510 // the camera to the top/foreground applications. 511 switch(procState) { 512 case PROCESS_STATE_TOP: // User visible 513 return 100; 514 case PROCESS_STATE_IMPORTANT_FOREGROUND: // Foreground 515 return 90; 516 case PROCESS_STATE_PERSISTENT: // Persistent system services 517 case PROCESS_STATE_PERSISTENT_UI: 518 return 80; 519 case PROCESS_STATE_IMPORTANT_BACKGROUND: // "Important" background processes 520 return 70; 521 case PROCESS_STATE_BACKUP: // Everything else 522 case PROCESS_STATE_HEAVY_WEIGHT: 523 case PROCESS_STATE_SERVICE: 524 case PROCESS_STATE_RECEIVER: 525 case PROCESS_STATE_HOME: 526 case PROCESS_STATE_LAST_ACTIVITY: 527 case PROCESS_STATE_CACHED_ACTIVITY: 528 case PROCESS_STATE_CACHED_ACTIVITY_CLIENT: 529 case PROCESS_STATE_CACHED_EMPTY: 530 return 1; 531 case PROCESS_STATE_NONEXISTENT: 532 return -1; 533 default: 534 ALOGE("%s: Received unknown process state from ActivityManagerService!", __FUNCTION__); 535 return -1; 536 } 537} 538 539status_t CameraService::getCameraVendorTagDescriptor(/*out*/sp<VendorTagDescriptor>& desc) { 540 if (!mModule) { 541 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 542 return -ENODEV; 543 } 544 545 desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 546 return OK; 547} 548 549int CameraService::getDeviceVersion(int cameraId, int* facing) { 550 struct camera_info info; 551 if (mModule->getCameraInfo(cameraId, &info) != OK) { 552 return -1; 553 } 554 555 int deviceVersion; 556 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) { 557 deviceVersion = info.device_version; 558 } else { 559 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 560 } 561 562 if (facing) { 563 *facing = info.facing; 564 } 565 566 return deviceVersion; 567} 568 569status_t CameraService::filterGetInfoErrorCode(status_t err) { 570 switch(err) { 571 case NO_ERROR: 572 case -EINVAL: 573 return err; 574 default: 575 break; 576 } 577 return -ENODEV; 578} 579 580bool CameraService::setUpVendorTags() { 581 vendor_tag_ops_t vOps = vendor_tag_ops_t(); 582 583 // Check if vendor operations have been implemented 584 if (!mModule->isVendorTagDefined()) { 585 ALOGI("%s: No vendor tags defined for this device.", __FUNCTION__); 586 return false; 587 } 588 589 ATRACE_BEGIN("camera3->get_metadata_vendor_tag_ops"); 590 mModule->getVendorTagOps(&vOps); 591 ATRACE_END(); 592 593 // Ensure all vendor operations are present 594 if (vOps.get_tag_count == NULL || vOps.get_all_tags == NULL || 595 vOps.get_section_name == NULL || vOps.get_tag_name == NULL || 596 vOps.get_tag_type == NULL) { 597 ALOGE("%s: Vendor tag operations not fully defined. Ignoring definitions." 598 , __FUNCTION__); 599 return false; 600 } 601 602 // Read all vendor tag definitions into a descriptor 603 sp<VendorTagDescriptor> desc; 604 status_t res; 605 if ((res = VendorTagDescriptor::createDescriptorFromOps(&vOps, /*out*/desc)) 606 != OK) { 607 ALOGE("%s: Could not generate descriptor from vendor tag operations," 608 "received error %s (%d). Camera clients will not be able to use" 609 "vendor tags", __FUNCTION__, strerror(res), res); 610 return false; 611 } 612 613 // Set the global descriptor to use with camera metadata 614 VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc); 615 return true; 616} 617 618status_t CameraService::makeClient(const sp<CameraService>& cameraService, 619 const sp<IInterface>& cameraCb, const String16& packageName, const String8& cameraId, 620 int facing, int clientPid, uid_t clientUid, int servicePid, bool legacyMode, 621 int halVersion, int deviceVersion, apiLevel effectiveApiLevel, 622 /*out*/sp<BasicClient>* client) { 623 624 // TODO: Update CameraClients + HAL interface to use strings for Camera IDs 625 int id = cameraIdToInt(cameraId); 626 if (id == -1) { 627 ALOGE("%s: Invalid camera ID %s, cannot convert to integer.", __FUNCTION__, 628 cameraId.string()); 629 return BAD_VALUE; 630 } 631 632 if (halVersion < 0 || halVersion == deviceVersion) { 633 // Default path: HAL version is unspecified by caller, create CameraClient 634 // based on device version reported by the HAL. 635 switch(deviceVersion) { 636 case CAMERA_DEVICE_API_VERSION_1_0: 637 if (effectiveApiLevel == API_1) { // Camera1 API route 638 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 639 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 640 clientPid, clientUid, getpid(), legacyMode); 641 } else { // Camera2 API route 642 ALOGW("Camera using old HAL version: %d", deviceVersion); 643 return -EOPNOTSUPP; 644 } 645 break; 646 case CAMERA_DEVICE_API_VERSION_2_0: 647 case CAMERA_DEVICE_API_VERSION_2_1: 648 case CAMERA_DEVICE_API_VERSION_3_0: 649 case CAMERA_DEVICE_API_VERSION_3_1: 650 case CAMERA_DEVICE_API_VERSION_3_2: 651 case CAMERA_DEVICE_API_VERSION_3_3: 652 if (effectiveApiLevel == API_1) { // Camera1 API route 653 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 654 *client = new Camera2Client(cameraService, tmp, packageName, id, facing, 655 clientPid, clientUid, servicePid, legacyMode); 656 } else { // Camera2 API route 657 sp<ICameraDeviceCallbacks> tmp = 658 static_cast<ICameraDeviceCallbacks*>(cameraCb.get()); 659 *client = new CameraDeviceClient(cameraService, tmp, packageName, id, 660 facing, clientPid, clientUid, servicePid); 661 } 662 break; 663 default: 664 // Should not be reachable 665 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 666 return INVALID_OPERATION; 667 } 668 } else { 669 // A particular HAL version is requested by caller. Create CameraClient 670 // based on the requested HAL version. 671 if (deviceVersion > CAMERA_DEVICE_API_VERSION_1_0 && 672 halVersion == CAMERA_DEVICE_API_VERSION_1_0) { 673 // Only support higher HAL version device opened as HAL1.0 device. 674 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 675 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 676 clientPid, clientUid, servicePid, legacyMode); 677 } else { 678 // Other combinations (e.g. HAL3.x open as HAL2.x) are not supported yet. 679 ALOGE("Invalid camera HAL version %x: HAL %x device can only be" 680 " opened as HAL %x device", halVersion, deviceVersion, 681 CAMERA_DEVICE_API_VERSION_1_0); 682 return INVALID_OPERATION; 683 } 684 } 685 return NO_ERROR; 686} 687 688status_t CameraService::initializeShimMetadata(int cameraId) { 689 int uid = getCallingUid(); 690 691 String16 internalPackageName("media"); 692 String8 id = String8::format("%d", cameraId); 693 status_t ret = NO_ERROR; 694 sp<Client> tmp = nullptr; 695 if ((ret = connectHelper<ICameraClient,Client>(sp<ICameraClient>{nullptr}, id, 696 static_cast<int>(CAMERA_HAL_API_VERSION_UNSPECIFIED), internalPackageName, uid, API_1, 697 false, true, tmp)) != NO_ERROR) { 698 ALOGE("%s: Error %d (%s) initializing shim metadata.", __FUNCTION__, ret, strerror(ret)); 699 return ret; 700 } 701 return NO_ERROR; 702} 703 704status_t CameraService::getLegacyParametersLazy(int cameraId, 705 /*out*/ 706 CameraParameters* parameters) { 707 708 ALOGV("%s: for cameraId: %d", __FUNCTION__, cameraId); 709 710 status_t ret = 0; 711 712 if (parameters == NULL) { 713 ALOGE("%s: parameters must not be null", __FUNCTION__); 714 return BAD_VALUE; 715 } 716 717 String8 id = String8::format("%d", cameraId); 718 719 // Check if we already have parameters 720 { 721 // Scope for service lock 722 Mutex::Autolock lock(mServiceLock); 723 auto cameraState = getCameraState(id); 724 if (cameraState == nullptr) { 725 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 726 return BAD_VALUE; 727 } 728 CameraParameters p = cameraState->getShimParams(); 729 if (!p.isEmpty()) { 730 *parameters = p; 731 return NO_ERROR; 732 } 733 } 734 735 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 736 ret = initializeShimMetadata(cameraId); 737 IPCThreadState::self()->restoreCallingIdentity(token); 738 if (ret != NO_ERROR) { 739 // Error already logged by callee 740 return ret; 741 } 742 743 // Check for parameters again 744 { 745 // Scope for service lock 746 Mutex::Autolock lock(mServiceLock); 747 auto cameraState = getCameraState(id); 748 if (cameraState == nullptr) { 749 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 750 return BAD_VALUE; 751 } 752 CameraParameters p = cameraState->getShimParams(); 753 if (!p.isEmpty()) { 754 *parameters = p; 755 return NO_ERROR; 756 } 757 } 758 759 ALOGE("%s: Parameters were not initialized, or were empty. Device may not be present.", 760 __FUNCTION__); 761 return INVALID_OPERATION; 762} 763 764status_t CameraService::validateConnectLocked(const String8& cameraId, /*inout*/int& clientUid) 765 const { 766 767 int callingPid = getCallingPid(); 768 769 if (clientUid == USE_CALLING_UID) { 770 clientUid = getCallingUid(); 771 } else { 772 // We only trust our own process to forward client UIDs 773 if (callingPid != getpid()) { 774 ALOGE("CameraService::connect X (PID %d) rejected (don't trust clientUid %d)", 775 callingPid, clientUid); 776 return PERMISSION_DENIED; 777 } 778 } 779 780 if (!mModule) { 781 ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)", 782 callingPid); 783 return -ENODEV; 784 } 785 786 if (getCameraState(cameraId) == nullptr) { 787 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 788 cameraId.string()); 789 return -ENODEV; 790 } 791 792 // Check device policy for this camera 793 char value[PROPERTY_VALUE_MAX]; 794 char key[PROPERTY_KEY_MAX]; 795 int clientUserId = multiuser_get_user_id(clientUid); 796 snprintf(key, PROPERTY_KEY_MAX, "sys.secpolicy.camera.off_%d", clientUserId); 797 property_get(key, value, "0"); 798 if (strcmp(value, "1") == 0) { 799 // Camera is disabled by DevicePolicyManager. 800 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is disabled by device " 801 "policy)", callingPid, cameraId.string()); 802 return -EACCES; 803 } 804 805 // Only allow clients who are being used by the current foreground device user, unless calling 806 // from our own process. 807 if (callingPid != getpid() && 808 (mLastUserId != clientUserId && mLastUserId != DEFAULT_LAST_USER_ID)) { 809 ALOGE("CameraService::connect X (PID %d) rejected (cannot connect from previous " 810 "device user %d, current device user %d)", callingPid, clientUserId, mLastUserId); 811 return PERMISSION_DENIED; 812 } 813 814 return checkIfDeviceIsUsable(cameraId); 815} 816 817status_t CameraService::checkIfDeviceIsUsable(const String8& cameraId) const { 818 auto cameraState = getCameraState(cameraId); 819 int callingPid = getCallingPid(); 820 if (cameraState == nullptr) { 821 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 822 cameraId.string()); 823 return -ENODEV; 824 } 825 826 ICameraServiceListener::Status currentStatus = cameraState->getStatus(); 827 if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { 828 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is not connected)", 829 callingPid, cameraId.string()); 830 return -ENODEV; 831 } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) { 832 ALOGE("CameraService::connect X (PID %d) rejected, (camera %s is initializing)", 833 callingPid, cameraId.string()); 834 return -EBUSY; 835 } 836 837 return NO_ERROR; 838} 839 840void CameraService::finishConnectLocked(const sp<BasicClient>& client, 841 const CameraService::DescriptorPtr& desc) { 842 843 // Make a descriptor for the incoming client 844 auto clientDescriptor = CameraService::CameraClientManager::makeClientDescriptor(client, desc); 845 auto evicted = mActiveClientManager.addAndEvict(clientDescriptor); 846 847 logConnected(desc->getKey(), static_cast<int>(desc->getOwnerId()), 848 String8(client->getPackageName())); 849 850 if (evicted.size() > 0) { 851 // This should never happen - clients should already have been removed in disconnect 852 for (auto& i : evicted) { 853 ALOGE("%s: Invalid state: Client for camera %s was not removed in disconnect", 854 __FUNCTION__, i->getKey().string()); 855 } 856 857 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, clients not evicted properly", 858 __FUNCTION__); 859 } 860} 861 862status_t CameraService::handleEvictionsLocked(const String8& cameraId, int clientPid, 863 apiLevel effectiveApiLevel, const sp<IBinder>& remoteCallback, const String8& packageName, 864 /*out*/ 865 sp<BasicClient>* client, 866 std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>* partial) { 867 868 status_t ret = NO_ERROR; 869 std::vector<DescriptorPtr> evictedClients; 870 DescriptorPtr clientDescriptor; 871 { 872 if (effectiveApiLevel == API_1) { 873 // If we are using API1, any existing client for this camera ID with the same remote 874 // should be returned rather than evicted to allow MediaRecorder to work properly. 875 876 auto current = mActiveClientManager.get(cameraId); 877 if (current != nullptr) { 878 auto clientSp = current->getValue(); 879 if (clientSp.get() != nullptr) { // should never be needed 880 if (clientSp->getRemote() == remoteCallback) { 881 ALOGI("CameraService::connect X (PID %d) (second call from same" 882 "app binder, returning the same client)", clientPid); 883 *client = clientSp; 884 return NO_ERROR; 885 } 886 } 887 } 888 } 889 890 // Return error if the device was unplugged or removed by the HAL for some reason 891 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 892 return ret; 893 } 894 895 // Get current active client PIDs 896 std::vector<int> ownerPids(mActiveClientManager.getAllOwners()); 897 ownerPids.push_back(clientPid); 898 899 // Use the value +PROCESS_STATE_NONEXISTENT, to avoid taking 900 // address of PROCESS_STATE_NONEXISTENT as a reference argument 901 // for the vector constructor. PROCESS_STATE_NONEXISTENT does 902 // not have an out-of-class definition. 903 std::vector<int> priorities(ownerPids.size(), +PROCESS_STATE_NONEXISTENT); 904 905 // Get priorites of all active PIDs 906 ProcessInfoService::getProcessStatesFromPids(ownerPids.size(), &ownerPids[0], 907 /*out*/&priorities[0]); 908 909 // Update all active clients' priorities 910 std::map<int,int> pidToPriorityMap; 911 for (size_t i = 0; i < ownerPids.size() - 1; i++) { 912 pidToPriorityMap.emplace(ownerPids[i], getCameraPriorityFromProcState(priorities[i])); 913 } 914 mActiveClientManager.updatePriorities(pidToPriorityMap); 915 916 // Get state for the given cameraId 917 auto state = getCameraState(cameraId); 918 if (state == nullptr) { 919 ALOGE("CameraService::connect X (PID %d) rejected (no camera device with ID %s)", 920 clientPid, cameraId.string()); 921 return BAD_VALUE; 922 } 923 924 // Make descriptor for incoming client 925 clientDescriptor = CameraClientManager::makeClientDescriptor(cameraId, 926 sp<BasicClient>{nullptr}, static_cast<int32_t>(state->getCost()), 927 state->getConflicting(), 928 getCameraPriorityFromProcState(priorities[priorities.size() - 1]), clientPid); 929 930 // Find clients that would be evicted 931 auto evicted = mActiveClientManager.wouldEvict(clientDescriptor); 932 933 // If the incoming client was 'evicted,' higher priority clients have the camera in the 934 // background, so we cannot do evictions 935 if (std::find(evicted.begin(), evicted.end(), clientDescriptor) != evicted.end()) { 936 ALOGE("CameraService::connect X (PID %d) rejected (existing client(s) with higher" 937 " priority).", clientPid); 938 939 sp<BasicClient> clientSp = clientDescriptor->getValue(); 940 String8 curTime = getFormattedCurrentTime(); 941 auto incompatibleClients = 942 mActiveClientManager.getIncompatibleClients(clientDescriptor); 943 944 String8 msg = String8::format("%s : DENIED connect device %s client for package %s " 945 "(PID %d, priority %d) due to eviction policy", curTime.string(), 946 cameraId.string(), packageName.string(), clientPid, 947 getCameraPriorityFromProcState(priorities[priorities.size() - 1])); 948 949 for (auto& i : incompatibleClients) { 950 msg.appendFormat("\n - Blocked by existing device %s client for package %s" 951 "(PID %" PRId32 ", priority %" PRId32 ")", i->getKey().string(), 952 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 953 i->getPriority()); 954 } 955 956 // Log the client's attempt 957 Mutex::Autolock l(mLogLock); 958 mEventLog.add(msg); 959 960 return -EBUSY; 961 } 962 963 for (auto& i : evicted) { 964 sp<BasicClient> clientSp = i->getValue(); 965 if (clientSp.get() == nullptr) { 966 ALOGE("%s: Invalid state: Null client in active client list.", __FUNCTION__); 967 968 // TODO: Remove this 969 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, null client in active list", 970 __FUNCTION__); 971 mActiveClientManager.remove(i); 972 continue; 973 } 974 975 ALOGE("CameraService::connect evicting conflicting client for camera ID %s", 976 i->getKey().string()); 977 evictedClients.push_back(i); 978 979 // Log the clients evicted 980 logEvent(String8::format("EVICT device %s client held by package %s (PID" 981 " %" PRId32 ", priority %" PRId32 ")\n - Evicted by device %s client for" 982 " package %s (PID %d, priority %" PRId32 ")", 983 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 984 i->getOwnerId(), i->getPriority(), cameraId.string(), 985 packageName.string(), clientPid, 986 getCameraPriorityFromProcState(priorities[priorities.size() - 1]))); 987 988 // Notify the client of disconnection 989 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 990 CaptureResultExtras()); 991 } 992 } 993 994 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 995 // other clients from connecting in mServiceLockWrapper if held 996 mServiceLock.unlock(); 997 998 // Clear caller identity temporarily so client disconnect PID checks work correctly 999 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1000 1001 // Destroy evicted clients 1002 for (auto& i : evictedClients) { 1003 // Disconnect is blocking, and should only have returned when HAL has cleaned up 1004 i->getValue()->disconnect(); // Clients will remove themselves from the active client list 1005 } 1006 1007 IPCThreadState::self()->restoreCallingIdentity(token); 1008 1009 for (const auto& i : evictedClients) { 1010 ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")", 1011 __FUNCTION__, i->getKey().string(), i->getOwnerId()); 1012 ret = mActiveClientManager.waitUntilRemoved(i, DEFAULT_DISCONNECT_TIMEOUT_NS); 1013 if (ret == TIMED_OUT) { 1014 ALOGE("%s: Timed out waiting for client for device %s to disconnect, " 1015 "current clients:\n%s", __FUNCTION__, i->getKey().string(), 1016 mActiveClientManager.toString().string()); 1017 return -EBUSY; 1018 } 1019 if (ret != NO_ERROR) { 1020 ALOGE("%s: Received error waiting for client for device %s to disconnect: %s (%d), " 1021 "current clients:\n%s", __FUNCTION__, i->getKey().string(), strerror(-ret), 1022 ret, mActiveClientManager.toString().string()); 1023 return ret; 1024 } 1025 } 1026 1027 evictedClients.clear(); 1028 1029 // Once clients have been disconnected, relock 1030 mServiceLock.lock(); 1031 1032 // Check again if the device was unplugged or something while we weren't holding mServiceLock 1033 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1034 return ret; 1035 } 1036 1037 *partial = clientDescriptor; 1038 return NO_ERROR; 1039} 1040 1041status_t CameraService::connect( 1042 const sp<ICameraClient>& cameraClient, 1043 int cameraId, 1044 const String16& clientPackageName, 1045 int clientUid, 1046 /*out*/ 1047 sp<ICamera>& device) { 1048 1049 status_t ret = NO_ERROR; 1050 String8 id = String8::format("%d", cameraId); 1051 sp<Client> client = nullptr; 1052 ret = connectHelper<ICameraClient,Client>(cameraClient, id, CAMERA_HAL_API_VERSION_UNSPECIFIED, 1053 clientPackageName, clientUid, API_1, false, false, /*out*/client); 1054 1055 if(ret != NO_ERROR) { 1056 logRejected(id, getCallingPid(), String8(clientPackageName), 1057 String8::format("%s (%d)", strerror(-ret), ret)); 1058 return ret; 1059 } 1060 1061 device = client; 1062 return NO_ERROR; 1063} 1064 1065status_t CameraService::connectLegacy( 1066 const sp<ICameraClient>& cameraClient, 1067 int cameraId, int halVersion, 1068 const String16& clientPackageName, 1069 int clientUid, 1070 /*out*/ 1071 sp<ICamera>& device) { 1072 1073 String8 id = String8::format("%d", cameraId); 1074 int apiVersion = mModule->getModuleApiVersion(); 1075 if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED && 1076 apiVersion < CAMERA_MODULE_API_VERSION_2_3) { 1077 /* 1078 * Either the HAL version is unspecified in which case this just creates 1079 * a camera client selected by the latest device version, or 1080 * it's a particular version in which case the HAL must supported 1081 * the open_legacy call 1082 */ 1083 ALOGE("%s: camera HAL module version %x doesn't support connecting to legacy HAL devices!", 1084 __FUNCTION__, apiVersion); 1085 logRejected(id, getCallingPid(), String8(clientPackageName), 1086 String8("HAL module version doesn't support legacy HAL connections")); 1087 return INVALID_OPERATION; 1088 } 1089 1090 status_t ret = NO_ERROR; 1091 sp<Client> client = nullptr; 1092 ret = connectHelper<ICameraClient,Client>(cameraClient, id, halVersion, clientPackageName, 1093 clientUid, API_1, true, false, /*out*/client); 1094 1095 if(ret != NO_ERROR) { 1096 logRejected(id, getCallingPid(), String8(clientPackageName), 1097 String8::format("%s (%d)", strerror(-ret), ret)); 1098 return ret; 1099 } 1100 1101 device = client; 1102 return NO_ERROR; 1103} 1104 1105status_t CameraService::connectDevice( 1106 const sp<ICameraDeviceCallbacks>& cameraCb, 1107 int cameraId, 1108 const String16& clientPackageName, 1109 int clientUid, 1110 /*out*/ 1111 sp<ICameraDeviceUser>& device) { 1112 1113 status_t ret = NO_ERROR; 1114 String8 id = String8::format("%d", cameraId); 1115 sp<CameraDeviceClient> client = nullptr; 1116 ret = connectHelper<ICameraDeviceCallbacks,CameraDeviceClient>(cameraCb, id, 1117 CAMERA_HAL_API_VERSION_UNSPECIFIED, clientPackageName, clientUid, API_2, false, false, 1118 /*out*/client); 1119 1120 if(ret != NO_ERROR) { 1121 logRejected(id, getCallingPid(), String8(clientPackageName), 1122 String8::format("%s (%d)", strerror(-ret), ret)); 1123 return ret; 1124 } 1125 1126 device = client; 1127 return NO_ERROR; 1128} 1129 1130status_t CameraService::setTorchMode(const String16& cameraId, bool enabled, 1131 const sp<IBinder>& clientBinder) { 1132 if (enabled && clientBinder == NULL) { 1133 ALOGE("%s: torch client binder is NULL", __FUNCTION__); 1134 return -EINVAL; 1135 } 1136 1137 String8 id = String8(cameraId.string()); 1138 1139 // verify id is valid. 1140 auto state = getCameraState(id); 1141 if (state == nullptr) { 1142 ALOGE("%s: camera id is invalid %s", id.string()); 1143 return -EINVAL; 1144 } 1145 1146 ICameraServiceListener::Status cameraStatus = state->getStatus(); 1147 if (cameraStatus != ICameraServiceListener::STATUS_PRESENT && 1148 cameraStatus != ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1149 ALOGE("%s: camera id is invalid %s", id.string()); 1150 return -EINVAL; 1151 } 1152 1153 { 1154 Mutex::Autolock al(mTorchStatusMutex); 1155 ICameraServiceListener::TorchStatus status; 1156 status_t res = getTorchStatusLocked(id, &status); 1157 if (res) { 1158 ALOGE("%s: getting current torch status failed for camera %s", 1159 __FUNCTION__, id.string()); 1160 return -EINVAL; 1161 } 1162 1163 if (status == ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE) { 1164 if (cameraStatus == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1165 ALOGE("%s: torch mode of camera %s is not available because " 1166 "camera is in use", __FUNCTION__, id.string()); 1167 return -EBUSY; 1168 } else { 1169 ALOGE("%s: torch mode of camera %s is not available due to " 1170 "insufficient resources", __FUNCTION__, id.string()); 1171 return -EUSERS; 1172 } 1173 } 1174 } 1175 1176 status_t res = mFlashlight->setTorchMode(id, enabled); 1177 if (res) { 1178 ALOGE("%s: setting torch mode of camera %s to %d failed. %s (%d)", 1179 __FUNCTION__, id.string(), enabled, strerror(-res), res); 1180 return res; 1181 } 1182 1183 { 1184 // update the link to client's death 1185 Mutex::Autolock al(mTorchClientMapMutex); 1186 ssize_t index = mTorchClientMap.indexOfKey(id); 1187 if (enabled) { 1188 if (index == NAME_NOT_FOUND) { 1189 mTorchClientMap.add(id, clientBinder); 1190 } else { 1191 const sp<IBinder> oldBinder = mTorchClientMap.valueAt(index); 1192 oldBinder->unlinkToDeath(this); 1193 1194 mTorchClientMap.replaceValueAt(index, clientBinder); 1195 } 1196 clientBinder->linkToDeath(this); 1197 } else if (index != NAME_NOT_FOUND) { 1198 sp<IBinder> oldBinder = mTorchClientMap.valueAt(index); 1199 oldBinder->unlinkToDeath(this); 1200 } 1201 } 1202 1203 return OK; 1204} 1205 1206void CameraService::notifySystemEvent(int eventId, int arg0) { 1207 switch(eventId) { 1208 case ICameraService::USER_SWITCHED: { 1209 doUserSwitch(/*newUserId*/arg0); 1210 break; 1211 } 1212 case ICameraService::NO_EVENT: 1213 default: { 1214 ALOGW("%s: Received invalid system event from system_server: %d", __FUNCTION__, 1215 eventId); 1216 break; 1217 } 1218 } 1219} 1220 1221status_t CameraService::addListener( 1222 const sp<ICameraServiceListener>& listener) { 1223 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); 1224 1225 if (listener == 0) { 1226 ALOGE("%s: Listener must not be null", __FUNCTION__); 1227 return BAD_VALUE; 1228 } 1229 1230 Mutex::Autolock lock(mServiceLock); 1231 1232 { 1233 Mutex::Autolock lock(mStatusListenerLock); 1234 for (auto& it : mListenerList) { 1235 if (IInterface::asBinder(it) == IInterface::asBinder(listener)) { 1236 ALOGW("%s: Tried to add listener %p which was already subscribed", 1237 __FUNCTION__, listener.get()); 1238 return ALREADY_EXISTS; 1239 } 1240 } 1241 1242 mListenerList.push_back(listener); 1243 } 1244 1245 1246 /* Immediately signal current status to this listener only */ 1247 { 1248 Mutex::Autolock lock(mCameraStatesLock); 1249 for (auto& i : mCameraStates) { 1250 // TODO: Update binder to use String16 for camera IDs and remove; 1251 int id = cameraIdToInt(i.first); 1252 if (id == -1) continue; 1253 1254 listener->onStatusChanged(i.second->getStatus(), id); 1255 } 1256 } 1257 1258 /* Immediately signal current torch status to this listener only */ 1259 { 1260 Mutex::Autolock al(mTorchStatusMutex); 1261 for (size_t i = 0; i < mTorchStatusMap.size(); i++ ) { 1262 String16 id = String16(mTorchStatusMap.keyAt(i).string()); 1263 listener->onTorchStatusChanged(mTorchStatusMap.valueAt(i), id); 1264 } 1265 } 1266 1267 return OK; 1268} 1269 1270status_t CameraService::removeListener(const sp<ICameraServiceListener>& listener) { 1271 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); 1272 1273 if (listener == 0) { 1274 ALOGE("%s: Listener must not be null", __FUNCTION__); 1275 return BAD_VALUE; 1276 } 1277 1278 Mutex::Autolock lock(mServiceLock); 1279 1280 { 1281 Mutex::Autolock lock(mStatusListenerLock); 1282 for (auto it = mListenerList.begin(); it != mListenerList.end(); it++) { 1283 if (IInterface::asBinder(*it) == IInterface::asBinder(listener)) { 1284 mListenerList.erase(it); 1285 return OK; 1286 } 1287 } 1288 } 1289 1290 ALOGW("%s: Tried to remove a listener %p which was not subscribed", 1291 __FUNCTION__, listener.get()); 1292 1293 return BAD_VALUE; 1294} 1295 1296status_t CameraService::getLegacyParameters(int cameraId, /*out*/String16* parameters) { 1297 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1298 1299 if (parameters == NULL) { 1300 ALOGE("%s: parameters must not be null", __FUNCTION__); 1301 return BAD_VALUE; 1302 } 1303 1304 status_t ret = 0; 1305 1306 CameraParameters shimParams; 1307 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 1308 // Error logged by caller 1309 return ret; 1310 } 1311 1312 String8 shimParamsString8 = shimParams.flatten(); 1313 String16 shimParamsString16 = String16(shimParamsString8); 1314 1315 *parameters = shimParamsString16; 1316 1317 return OK; 1318} 1319 1320status_t CameraService::supportsCameraApi(int cameraId, int apiVersion) { 1321 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1322 1323 switch (apiVersion) { 1324 case API_VERSION_1: 1325 case API_VERSION_2: 1326 break; 1327 default: 1328 ALOGE("%s: Bad API version %d", __FUNCTION__, apiVersion); 1329 return BAD_VALUE; 1330 } 1331 1332 int facing = -1; 1333 int deviceVersion = getDeviceVersion(cameraId, &facing); 1334 1335 switch(deviceVersion) { 1336 case CAMERA_DEVICE_API_VERSION_1_0: 1337 case CAMERA_DEVICE_API_VERSION_2_0: 1338 case CAMERA_DEVICE_API_VERSION_2_1: 1339 case CAMERA_DEVICE_API_VERSION_3_0: 1340 case CAMERA_DEVICE_API_VERSION_3_1: 1341 if (apiVersion == API_VERSION_2) { 1342 ALOGV("%s: Camera id %d uses HAL prior to HAL3.2, doesn't support api2 without shim", 1343 __FUNCTION__, cameraId); 1344 return -EOPNOTSUPP; 1345 } else { // if (apiVersion == API_VERSION_1) { 1346 ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported", 1347 __FUNCTION__, cameraId); 1348 return OK; 1349 } 1350 case CAMERA_DEVICE_API_VERSION_3_2: 1351 case CAMERA_DEVICE_API_VERSION_3_3: 1352 ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly", 1353 __FUNCTION__, cameraId); 1354 return OK; 1355 case -1: 1356 ALOGE("%s: Invalid camera id %d", __FUNCTION__, cameraId); 1357 return BAD_VALUE; 1358 default: 1359 ALOGE("%s: Unknown camera device HAL version: %d", __FUNCTION__, deviceVersion); 1360 return INVALID_OPERATION; 1361 } 1362 1363 return OK; 1364} 1365 1366void CameraService::removeByClient(const BasicClient* client) { 1367 Mutex::Autolock lock(mServiceLock); 1368 for (auto& i : mActiveClientManager.getAll()) { 1369 auto clientSp = i->getValue(); 1370 if (clientSp.get() == client) { 1371 mActiveClientManager.remove(i); 1372 } 1373 } 1374} 1375 1376bool CameraService::evictClientIdByRemote(const wp<IBinder>& remote) { 1377 const int callingPid = getCallingPid(); 1378 const int servicePid = getpid(); 1379 bool ret = false; 1380 { 1381 // Acquire mServiceLock and prevent other clients from connecting 1382 std::unique_ptr<AutoConditionLock> lock = 1383 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1384 1385 1386 std::vector<sp<BasicClient>> evicted; 1387 for (auto& i : mActiveClientManager.getAll()) { 1388 auto clientSp = i->getValue(); 1389 if (clientSp.get() == nullptr) { 1390 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1391 mActiveClientManager.remove(i); 1392 continue; 1393 } 1394 if (remote == clientSp->getRemote() && (callingPid == servicePid || 1395 callingPid == clientSp->getClientPid())) { 1396 mActiveClientManager.remove(i); 1397 evicted.push_back(clientSp); 1398 1399 // Notify the client of disconnection 1400 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1401 CaptureResultExtras()); 1402 } 1403 } 1404 1405 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1406 // other clients from connecting in mServiceLockWrapper if held 1407 mServiceLock.unlock(); 1408 1409 // Do not clear caller identity, remote caller should be client proccess 1410 1411 for (auto& i : evicted) { 1412 if (i.get() != nullptr) { 1413 i->disconnect(); 1414 ret = true; 1415 } 1416 } 1417 1418 // Reacquire mServiceLock 1419 mServiceLock.lock(); 1420 1421 } // lock is destroyed, allow further connect calls 1422 1423 return ret; 1424} 1425 1426 1427std::shared_ptr<CameraService::CameraState> CameraService::getCameraState( 1428 const String8& cameraId) const { 1429 std::shared_ptr<CameraState> state; 1430 { 1431 Mutex::Autolock lock(mCameraStatesLock); 1432 auto iter = mCameraStates.find(cameraId); 1433 if (iter != mCameraStates.end()) { 1434 state = iter->second; 1435 } 1436 } 1437 return state; 1438} 1439 1440sp<CameraService::BasicClient> CameraService::removeClientLocked(const String8& cameraId) { 1441 // Remove from active clients list 1442 auto clientDescriptorPtr = mActiveClientManager.remove(cameraId); 1443 if (clientDescriptorPtr == nullptr) { 1444 ALOGW("%s: Could not evict client, no client for camera ID %s", __FUNCTION__, 1445 cameraId.string()); 1446 return sp<BasicClient>{nullptr}; 1447 } 1448 1449 return clientDescriptorPtr->getValue(); 1450} 1451 1452void CameraService::doUserSwitch(int newUserId) { 1453 // Acquire mServiceLock and prevent other clients from connecting 1454 std::unique_ptr<AutoConditionLock> lock = 1455 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1456 1457 if (newUserId <= 0) { 1458 ALOGW("%s: Bad user ID %d given during user switch, resetting to default.", __FUNCTION__, 1459 newUserId); 1460 newUserId = DEFAULT_LAST_USER_ID; 1461 } 1462 1463 logUserSwitch(mLastUserId, newUserId); 1464 1465 mLastUserId = newUserId; 1466 1467 // Current user has switched, evict all current clients. 1468 std::vector<sp<BasicClient>> evicted; 1469 for (auto& i : mActiveClientManager.getAll()) { 1470 auto clientSp = i->getValue(); 1471 1472 if (clientSp.get() == nullptr) { 1473 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1474 continue; 1475 } 1476 1477 evicted.push_back(clientSp); 1478 1479 String8 curTime = getFormattedCurrentTime(); 1480 1481 ALOGE("Evicting conflicting client for camera ID %s due to user change", 1482 i->getKey().string()); 1483 1484 // Log the clients evicted 1485 logEvent(String8::format("EVICT device %s client held by package %s (PID %" 1486 PRId32 ", priority %" PRId32 ")\n - Evicted due to user switch.", 1487 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1488 i->getOwnerId(), i->getPriority())); 1489 1490 } 1491 1492 // Do not hold mServiceLock while disconnecting clients, but retain the condition 1493 // blocking other clients from connecting in mServiceLockWrapper if held. 1494 mServiceLock.unlock(); 1495 1496 // Clear caller identity temporarily so client disconnect PID checks work correctly 1497 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1498 1499 for (auto& i : evicted) { 1500 i->disconnect(); 1501 } 1502 1503 IPCThreadState::self()->restoreCallingIdentity(token); 1504 1505 // Reacquire mServiceLock 1506 mServiceLock.lock(); 1507} 1508 1509void CameraService::logEvent(const char* event) { 1510 String8 curTime = getFormattedCurrentTime(); 1511 Mutex::Autolock l(mLogLock); 1512 mEventLog.add(String8::format("%s : %s", curTime.string(), event)); 1513} 1514 1515void CameraService::logDisconnected(const char* cameraId, int clientPid, 1516 const char* clientPackage) { 1517 // Log the clients evicted 1518 logEvent(String8::format("DISCONNECT device %s client for package %s (PID %d)", cameraId, 1519 clientPackage, clientPid)); 1520} 1521 1522void CameraService::logConnected(const char* cameraId, int clientPid, 1523 const char* clientPackage) { 1524 // Log the clients evicted 1525 logEvent(String8::format("CONNECT device %s client for package %s (PID %d)", cameraId, 1526 clientPackage, clientPid)); 1527} 1528 1529void CameraService::logRejected(const char* cameraId, int clientPid, 1530 const char* clientPackage, const char* reason) { 1531 // Log the client rejected 1532 logEvent(String8::format("REJECT device %s client for package %s (PID %d), reason: (%s)", 1533 cameraId, clientPackage, clientPid, reason)); 1534} 1535 1536void CameraService::logUserSwitch(int oldUserId, int newUserId) { 1537 // Log the new and old users 1538 logEvent(String8::format("USER_SWITCH from old user: %d , to new user: %d", oldUserId, 1539 newUserId)); 1540} 1541 1542void CameraService::logDeviceRemoved(const char* cameraId, const char* reason) { 1543 // Log the device removal 1544 logEvent(String8::format("REMOVE device %s, reason: (%s)", cameraId, reason)); 1545} 1546 1547void CameraService::logDeviceAdded(const char* cameraId, const char* reason) { 1548 // Log the device removal 1549 logEvent(String8::format("ADD device %s, reason: (%s)", cameraId, reason)); 1550} 1551 1552void CameraService::logClientDied(int clientPid, const char* reason) { 1553 // Log the device removal 1554 logEvent(String8::format("DIED client(s) with PID %d, reason: (%s)", clientPid, reason)); 1555} 1556 1557status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply, 1558 uint32_t flags) { 1559 1560 const int pid = getCallingPid(); 1561 const int selfPid = getpid(); 1562 1563 // Permission checks 1564 switch (code) { 1565 case BnCameraService::CONNECT: 1566 case BnCameraService::CONNECT_DEVICE: 1567 case BnCameraService::CONNECT_LEGACY: { 1568 if (pid != selfPid) { 1569 // we're called from a different process, do the real check 1570 if (!checkCallingPermission( 1571 String16("android.permission.CAMERA"))) { 1572 const int uid = getCallingUid(); 1573 ALOGE("Permission Denial: " 1574 "can't use the camera pid=%d, uid=%d", pid, uid); 1575 return PERMISSION_DENIED; 1576 } 1577 } 1578 break; 1579 } 1580 case BnCameraService::NOTIFY_SYSTEM_EVENT: { 1581 if (pid != selfPid) { 1582 // Ensure we're being called by system_server, or similar process with 1583 // permissions to notify the camera service about system events 1584 if (!checkCallingPermission( 1585 String16("android.permission.CAMERA_SEND_SYSTEM_EVENTS"))) { 1586 const int uid = getCallingUid(); 1587 ALOGE("Permission Denial: cannot send updates to camera service about system" 1588 " events from pid=%d, uid=%d", pid, uid); 1589 return PERMISSION_DENIED; 1590 } 1591 } 1592 break; 1593 } 1594 } 1595 1596 return BnCameraService::onTransact(code, data, reply, flags); 1597} 1598 1599// We share the media players for shutter and recording sound for all clients. 1600// A reference count is kept to determine when we will actually release the 1601// media players. 1602 1603MediaPlayer* CameraService::newMediaPlayer(const char *file) { 1604 MediaPlayer* mp = new MediaPlayer(); 1605 if (mp->setDataSource(NULL /* httpService */, file, NULL) == NO_ERROR) { 1606 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 1607 mp->prepare(); 1608 } else { 1609 ALOGE("Failed to load CameraService sounds: %s", file); 1610 return NULL; 1611 } 1612 return mp; 1613} 1614 1615void CameraService::loadSound() { 1616 Mutex::Autolock lock(mSoundLock); 1617 LOG1("CameraService::loadSound ref=%d", mSoundRef); 1618 if (mSoundRef++) return; 1619 1620 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 1621 mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 1622} 1623 1624void CameraService::releaseSound() { 1625 Mutex::Autolock lock(mSoundLock); 1626 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 1627 if (--mSoundRef) return; 1628 1629 for (int i = 0; i < NUM_SOUNDS; i++) { 1630 if (mSoundPlayer[i] != 0) { 1631 mSoundPlayer[i]->disconnect(); 1632 mSoundPlayer[i].clear(); 1633 } 1634 } 1635} 1636 1637void CameraService::playSound(sound_kind kind) { 1638 LOG1("playSound(%d)", kind); 1639 Mutex::Autolock lock(mSoundLock); 1640 sp<MediaPlayer> player = mSoundPlayer[kind]; 1641 if (player != 0) { 1642 player->seekTo(0); 1643 player->start(); 1644 } 1645} 1646 1647// ---------------------------------------------------------------------------- 1648 1649CameraService::Client::Client(const sp<CameraService>& cameraService, 1650 const sp<ICameraClient>& cameraClient, 1651 const String16& clientPackageName, 1652 int cameraId, int cameraFacing, 1653 int clientPid, uid_t clientUid, 1654 int servicePid) : 1655 CameraService::BasicClient(cameraService, 1656 IInterface::asBinder(cameraClient), 1657 clientPackageName, 1658 cameraId, cameraFacing, 1659 clientPid, clientUid, 1660 servicePid) 1661{ 1662 int callingPid = getCallingPid(); 1663 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 1664 1665 mRemoteCallback = cameraClient; 1666 1667 cameraService->loadSound(); 1668 1669 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 1670} 1671 1672// tear down the client 1673CameraService::Client::~Client() { 1674 ALOGV("~Client"); 1675 mDestructionStarted = true; 1676 1677 mCameraService->releaseSound(); 1678 // unconditionally disconnect. function is idempotent 1679 Client::disconnect(); 1680} 1681 1682CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 1683 const sp<IBinder>& remoteCallback, 1684 const String16& clientPackageName, 1685 int cameraId, int cameraFacing, 1686 int clientPid, uid_t clientUid, 1687 int servicePid): 1688 mClientPackageName(clientPackageName), mDisconnected(false) 1689{ 1690 mCameraService = cameraService; 1691 mRemoteBinder = remoteCallback; 1692 mCameraId = cameraId; 1693 mCameraFacing = cameraFacing; 1694 mClientPid = clientPid; 1695 mClientUid = clientUid; 1696 mServicePid = servicePid; 1697 mOpsActive = false; 1698 mDestructionStarted = false; 1699} 1700 1701CameraService::BasicClient::~BasicClient() { 1702 ALOGV("~BasicClient"); 1703 mDestructionStarted = true; 1704} 1705 1706void CameraService::BasicClient::disconnect() { 1707 if (mDisconnected) { 1708 ALOGE("%s: Disconnect called on already disconnected client for device %d", __FUNCTION__, 1709 mCameraId); 1710 return; 1711 } 1712 mDisconnected = true;; 1713 1714 mCameraService->removeByClient(this); 1715 mCameraService->logDisconnected(String8::format("%d", mCameraId), mClientPid, 1716 String8(mClientPackageName)); 1717 1718 sp<IBinder> remote = getRemote(); 1719 if (remote != nullptr) { 1720 remote->unlinkToDeath(mCameraService); 1721 } 1722 1723 finishCameraOps(); 1724 ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid); 1725 1726 // client shouldn't be able to call into us anymore 1727 mClientPid = 0; 1728} 1729 1730String16 CameraService::BasicClient::getPackageName() const { 1731 return mClientPackageName; 1732} 1733 1734 1735int CameraService::BasicClient::getClientPid() const { 1736 return mClientPid; 1737} 1738 1739status_t CameraService::BasicClient::startCameraOps() { 1740 int32_t res; 1741 // Notify app ops that the camera is not available 1742 mOpsCallback = new OpsCallback(this); 1743 1744 { 1745 ALOGV("%s: Start camera ops, package name = %s, client UID = %d", 1746 __FUNCTION__, String8(mClientPackageName).string(), mClientUid); 1747 } 1748 1749 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 1750 mClientPackageName, mOpsCallback); 1751 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 1752 mClientUid, mClientPackageName); 1753 1754 if (res != AppOpsManager::MODE_ALLOWED) { 1755 ALOGI("Camera %d: Access for \"%s\" has been revoked", 1756 mCameraId, String8(mClientPackageName).string()); 1757 return PERMISSION_DENIED; 1758 } 1759 1760 mOpsActive = true; 1761 1762 // Transition device availability listeners from PRESENT -> NOT_AVAILABLE 1763 mCameraService->updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 1764 String8::format("%d", mCameraId)); 1765 1766 return OK; 1767} 1768 1769status_t CameraService::BasicClient::finishCameraOps() { 1770 // Check if startCameraOps succeeded, and if so, finish the camera op 1771 if (mOpsActive) { 1772 // Notify app ops that the camera is available again 1773 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 1774 mClientPackageName); 1775 mOpsActive = false; 1776 1777 auto rejected = {ICameraServiceListener::STATUS_NOT_PRESENT, 1778 ICameraServiceListener::STATUS_ENUMERATING}; 1779 1780 // Transition to PRESENT if the camera is not in either of the rejected states 1781 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, 1782 String8::format("%d", mCameraId), rejected); 1783 1784 // Notify flashlight that a camera device is closed. 1785 mCameraService->mFlashlight->deviceClosed( 1786 String8::format("%d", mCameraId)); 1787 } 1788 // Always stop watching, even if no camera op is active 1789 if (mOpsCallback != NULL) { 1790 mAppOpsManager.stopWatchingMode(mOpsCallback); 1791 } 1792 mOpsCallback.clear(); 1793 1794 return OK; 1795} 1796 1797void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 1798 String8 name(packageName); 1799 String8 myName(mClientPackageName); 1800 1801 if (op != AppOpsManager::OP_CAMERA) { 1802 ALOGW("Unexpected app ops notification received: %d", op); 1803 return; 1804 } 1805 1806 int32_t res; 1807 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 1808 mClientUid, mClientPackageName); 1809 ALOGV("checkOp returns: %d, %s ", res, 1810 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 1811 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 1812 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 1813 "UNKNOWN"); 1814 1815 if (res != AppOpsManager::MODE_ALLOWED) { 1816 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 1817 myName.string()); 1818 // Reset the client PID to allow server-initiated disconnect, 1819 // and to prevent further calls by client. 1820 mClientPid = getCallingPid(); 1821 CaptureResultExtras resultExtras; // a dummy result (invalid) 1822 notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE, resultExtras); 1823 disconnect(); 1824 } 1825} 1826 1827// ---------------------------------------------------------------------------- 1828 1829// Provide client strong pointer for callbacks. 1830sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) { 1831 String8 cameraId = String8::format("%d", (int)(intptr_t) user); 1832 auto clientDescriptor = gCameraService->mActiveClientManager.get(cameraId); 1833 if (clientDescriptor != nullptr) { 1834 return sp<Client>{ 1835 static_cast<Client*>(clientDescriptor->getValue().get())}; 1836 } 1837 return sp<Client>{nullptr}; 1838} 1839 1840void CameraService::Client::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 1841 const CaptureResultExtras& resultExtras) { 1842 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 1843} 1844 1845// NOTE: function is idempotent 1846void CameraService::Client::disconnect() { 1847 ALOGV("Client::disconnect"); 1848 BasicClient::disconnect(); 1849} 1850 1851CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 1852 mClient(client) { 1853} 1854 1855void CameraService::Client::OpsCallback::opChanged(int32_t op, 1856 const String16& packageName) { 1857 sp<BasicClient> client = mClient.promote(); 1858 if (client != NULL) { 1859 client->opChanged(op, packageName); 1860 } 1861} 1862 1863// ---------------------------------------------------------------------------- 1864// CameraState 1865// ---------------------------------------------------------------------------- 1866 1867CameraService::CameraState::CameraState(const String8& id, int cost, 1868 const std::set<String8>& conflicting) : mId(id), 1869 mStatus(ICameraServiceListener::STATUS_PRESENT), mCost(cost), mConflicting(conflicting) {} 1870 1871CameraService::CameraState::~CameraState() {} 1872 1873ICameraServiceListener::Status CameraService::CameraState::getStatus() const { 1874 Mutex::Autolock lock(mStatusLock); 1875 return mStatus; 1876} 1877 1878CameraParameters CameraService::CameraState::getShimParams() const { 1879 return mShimParams; 1880} 1881 1882void CameraService::CameraState::setShimParams(const CameraParameters& params) { 1883 mShimParams = params; 1884} 1885 1886int CameraService::CameraState::getCost() const { 1887 return mCost; 1888} 1889 1890std::set<String8> CameraService::CameraState::getConflicting() const { 1891 return mConflicting; 1892} 1893 1894String8 CameraService::CameraState::getId() const { 1895 return mId; 1896} 1897 1898// ---------------------------------------------------------------------------- 1899// CameraClientManager 1900// ---------------------------------------------------------------------------- 1901 1902CameraService::CameraClientManager::~CameraClientManager() {} 1903 1904sp<CameraService::BasicClient> CameraService::CameraClientManager::getCameraClient( 1905 const String8& id) const { 1906 auto descriptor = get(id); 1907 if (descriptor == nullptr) { 1908 return sp<BasicClient>{nullptr}; 1909 } 1910 return descriptor->getValue(); 1911} 1912 1913String8 CameraService::CameraClientManager::toString() const { 1914 auto all = getAll(); 1915 String8 ret("["); 1916 bool hasAny = false; 1917 for (auto& i : all) { 1918 hasAny = true; 1919 String8 key = i->getKey(); 1920 int32_t cost = i->getCost(); 1921 int32_t pid = i->getOwnerId(); 1922 int32_t priority = i->getPriority(); 1923 auto conflicting = i->getConflicting(); 1924 auto clientSp = i->getValue(); 1925 String8 packageName; 1926 if (clientSp.get() != nullptr) { 1927 packageName = String8{clientSp->getPackageName()}; 1928 } 1929 ret.appendFormat("\n(Camera ID: %s, Cost: %" PRId32 ", PID: %" PRId32 ", Priority: %" 1930 PRId32 ", ", key.string(), cost, pid, priority); 1931 1932 if (packageName.size() != 0) { 1933 ret.appendFormat("Client Package Name: %s", packageName.string()); 1934 } 1935 1936 ret.append(", Conflicting Client Devices: {"); 1937 for (auto& j : conflicting) { 1938 ret.appendFormat("%s, ", j.string()); 1939 } 1940 ret.append("})"); 1941 } 1942 if (hasAny) ret.append("\n"); 1943 ret.append("]\n"); 1944 return ret; 1945} 1946 1947CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 1948 const String8& key, const sp<BasicClient>& value, int32_t cost, 1949 const std::set<String8>& conflictingKeys, int32_t priority, int32_t ownerId) { 1950 1951 return std::make_shared<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>( 1952 key, value, cost, conflictingKeys, priority, ownerId); 1953} 1954 1955CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 1956 const sp<BasicClient>& value, const CameraService::DescriptorPtr& partial) { 1957 return makeClientDescriptor(partial->getKey(), value, partial->getCost(), 1958 partial->getConflicting(), partial->getPriority(), partial->getOwnerId()); 1959} 1960 1961// ---------------------------------------------------------------------------- 1962 1963static const int kDumpLockRetries = 50; 1964static const int kDumpLockSleep = 60000; 1965 1966static bool tryLock(Mutex& mutex) 1967{ 1968 bool locked = false; 1969 for (int i = 0; i < kDumpLockRetries; ++i) { 1970 if (mutex.tryLock() == NO_ERROR) { 1971 locked = true; 1972 break; 1973 } 1974 usleep(kDumpLockSleep); 1975 } 1976 return locked; 1977} 1978 1979status_t CameraService::dump(int fd, const Vector<String16>& args) { 1980 String8 result("Dump of the Camera Service:\n"); 1981 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 1982 result.appendFormat("Permission Denial: " 1983 "can't dump CameraService from pid=%d, uid=%d\n", 1984 getCallingPid(), 1985 getCallingUid()); 1986 write(fd, result.string(), result.size()); 1987 } else { 1988 bool locked = tryLock(mServiceLock); 1989 // failed to lock - CameraService is probably deadlocked 1990 if (!locked) { 1991 result.append("CameraService may be deadlocked\n"); 1992 write(fd, result.string(), result.size()); 1993 } 1994 1995 bool hasClient = false; 1996 if (!mModule) { 1997 result = String8::format("No camera module available!\n"); 1998 write(fd, result.string(), result.size()); 1999 if (locked) mServiceLock.unlock(); 2000 return NO_ERROR; 2001 } 2002 2003 result = String8::format("Camera module HAL API version: 0x%x\n", mModule->getHalApiVersion()); 2004 result.appendFormat("Camera module API version: 0x%x\n", mModule->getModuleApiVersion()); 2005 result.appendFormat("Camera module name: %s\n", mModule->getModuleName()); 2006 result.appendFormat("Camera module author: %s\n", mModule->getModuleAuthor()); 2007 result.appendFormat("Number of camera devices: %d\n", mNumberOfCameras); 2008 String8 activeClientString = mActiveClientManager.toString(); 2009 result.appendFormat("Active Camera Clients:\n%s", activeClientString.string()); 2010 2011 sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 2012 if (desc == NULL) { 2013 result.appendFormat("Vendor tags left unimplemented.\n"); 2014 } else { 2015 result.appendFormat("Vendor tag definitions:\n"); 2016 } 2017 2018 write(fd, result.string(), result.size()); 2019 2020 if (desc != NULL) { 2021 desc->dump(fd, /*verbosity*/2, /*indentation*/4); 2022 } 2023 2024 result = String8("Prior client events (most recent at top):\n"); 2025 2026 { 2027 Mutex::Autolock l(mLogLock); 2028 for (const auto& msg : mEventLog) { 2029 result.appendFormat("%s\n", msg.string()); 2030 } 2031 2032 if (mEventLog.size() == DEFAULT_EVENT_LOG_LENGTH) { 2033 result.append("...\n"); 2034 } 2035 } 2036 2037 write(fd, result.string(), result.size()); 2038 2039 bool stateLocked = tryLock(mCameraStatesLock); 2040 if (!stateLocked) { 2041 result = String8::format("CameraStates in use, may be deadlocked\n"); 2042 write(fd, result.string(), result.size()); 2043 } 2044 2045 for (auto& state : mCameraStates) { 2046 String8 cameraId = state.first; 2047 result = String8::format("Camera %s information:\n", cameraId.string()); 2048 camera_info info; 2049 2050 // TODO: Change getCameraInfo + HAL to use String cameraIds 2051 status_t rc = mModule->getCameraInfo(cameraIdToInt(cameraId), &info); 2052 if (rc != OK) { 2053 result.appendFormat(" Error reading static information!\n"); 2054 write(fd, result.string(), result.size()); 2055 } else { 2056 result.appendFormat(" Facing: %s\n", 2057 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 2058 result.appendFormat(" Orientation: %d\n", info.orientation); 2059 int deviceVersion; 2060 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0) { 2061 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 2062 } else { 2063 deviceVersion = info.device_version; 2064 } 2065 2066 auto conflicting = state.second->getConflicting(); 2067 result.appendFormat(" Resource Cost: %d\n", state.second->getCost()); 2068 result.appendFormat(" Conflicting Devices:"); 2069 for (auto& id : conflicting) { 2070 result.appendFormat(" %s", cameraId.string()); 2071 } 2072 if (conflicting.size() == 0) { 2073 result.appendFormat(" NONE"); 2074 } 2075 result.appendFormat("\n"); 2076 2077 result.appendFormat(" Device version: %#x\n", deviceVersion); 2078 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { 2079 result.appendFormat(" Device static metadata:\n"); 2080 write(fd, result.string(), result.size()); 2081 dump_indented_camera_metadata(info.static_camera_characteristics, 2082 fd, /*verbosity*/2, /*indentation*/4); 2083 } else { 2084 write(fd, result.string(), result.size()); 2085 } 2086 2087 CameraParameters p = state.second->getShimParams(); 2088 if (!p.isEmpty()) { 2089 result = String8::format(" Camera1 API shim is using parameters:\n "); 2090 write(fd, result.string(), result.size()); 2091 p.dump(fd, args); 2092 } 2093 } 2094 2095 auto clientDescriptor = mActiveClientManager.get(cameraId); 2096 if (clientDescriptor == nullptr) { 2097 result = String8::format(" Device %s is closed, no client instance\n", 2098 cameraId.string()); 2099 write(fd, result.string(), result.size()); 2100 continue; 2101 } 2102 hasClient = true; 2103 result = String8::format(" Device %s is open. Client instance dump:\n\n", 2104 cameraId.string()); 2105 result.appendFormat("Client priority level: %d\n", clientDescriptor->getPriority()); 2106 result.appendFormat("Client PID: %d\n", clientDescriptor->getOwnerId()); 2107 2108 auto client = clientDescriptor->getValue(); 2109 result.appendFormat("Client package: %s\n", 2110 String8(client->getPackageName()).string()); 2111 write(fd, result.string(), result.size()); 2112 2113 client->dump(fd, args); 2114 } 2115 2116 if (stateLocked) mCameraStatesLock.unlock(); 2117 2118 if (!hasClient) { 2119 result = String8::format("\nNo active camera clients yet.\n"); 2120 write(fd, result.string(), result.size()); 2121 } 2122 2123 if (locked) mServiceLock.unlock(); 2124 2125 // Dump camera traces if there were any 2126 write(fd, "\n", 1); 2127 camera3::CameraTraces::dump(fd, args); 2128 2129 // change logging level 2130 int n = args.size(); 2131 for (int i = 0; i + 1 < n; i++) { 2132 String16 verboseOption("-v"); 2133 if (args[i] == verboseOption) { 2134 String8 levelStr(args[i+1]); 2135 int level = atoi(levelStr.string()); 2136 result = String8::format("\nSetting log level to %d.\n", level); 2137 setLogLevel(level); 2138 write(fd, result.string(), result.size()); 2139 } 2140 } 2141 } 2142 return NO_ERROR; 2143} 2144 2145void CameraService::handleTorchClientBinderDied(const wp<IBinder> &who) { 2146 Mutex::Autolock al(mTorchClientMapMutex); 2147 for (size_t i = 0; i < mTorchClientMap.size(); i++) { 2148 if (mTorchClientMap[i] == who) { 2149 // turn off the torch mode that was turned on by dead client 2150 String8 cameraId = mTorchClientMap.keyAt(i); 2151 status_t res = mFlashlight->setTorchMode(cameraId, false); 2152 if (res) { 2153 ALOGE("%s: torch client died but couldn't turn off torch: " 2154 "%s (%d)", __FUNCTION__, strerror(-res), res); 2155 return; 2156 } 2157 mTorchClientMap.removeItemsAt(i); 2158 break; 2159 } 2160 } 2161} 2162 2163/*virtual*/void CameraService::binderDied(const wp<IBinder> &who) { 2164 2165 /** 2166 * While tempting to promote the wp<IBinder> into a sp, it's actually not supported by the 2167 * binder driver 2168 */ 2169 2170 logClientDied(getCallingPid(), String8("Binder died unexpectedly")); 2171 2172 // check torch client 2173 handleTorchClientBinderDied(who); 2174 2175 // check camera device client 2176 if(!evictClientIdByRemote(who)) { 2177 ALOGV("%s: Java client's binder death already cleaned up (normal case)", __FUNCTION__); 2178 return; 2179 } 2180 2181 ALOGE("%s: Java client's binder died, removing it from the list of active clients", 2182 __FUNCTION__); 2183} 2184 2185void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId) { 2186 updateStatus(status, cameraId, {}); 2187} 2188 2189void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId, 2190 std::initializer_list<ICameraServiceListener::Status> rejectSourceStates) { 2191 // Do not lock mServiceLock here or can get into a deadlock from 2192 // connect() -> disconnect -> updateStatus 2193 2194 auto state = getCameraState(cameraId); 2195 2196 if (state == nullptr) { 2197 ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__, 2198 cameraId.string()); 2199 return; 2200 } 2201 2202 // Update the status for this camera state, then send the onStatusChangedCallbacks to each 2203 // of the listeners with both the mStatusStatus and mStatusListenerLock held 2204 state->updateStatus(status, cameraId, rejectSourceStates, [this] 2205 (const String8& cameraId, ICameraServiceListener::Status status) { 2206 2207 // Update torch status 2208 if (status == ICameraServiceListener::STATUS_NOT_PRESENT || 2209 status == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 2210 // Update torch status to not available when the camera device becomes not present 2211 // or not available. 2212 onTorchStatusChanged(cameraId, ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE); 2213 } else if (status == ICameraServiceListener::STATUS_PRESENT) { 2214 // Update torch status to available when the camera device becomes present or 2215 // available 2216 onTorchStatusChanged(cameraId, ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF); 2217 } 2218 2219 Mutex::Autolock lock(mStatusListenerLock); 2220 2221 for (auto& listener : mListenerList) { 2222 // TODO: Refactor status listeners to use strings for Camera IDs and remove this. 2223 int id = cameraIdToInt(cameraId); 2224 if (id != -1) listener->onStatusChanged(status, id); 2225 } 2226 }); 2227} 2228 2229status_t CameraService::getTorchStatusLocked( 2230 const String8& cameraId, 2231 ICameraServiceListener::TorchStatus *status) const { 2232 if (!status) { 2233 return BAD_VALUE; 2234 } 2235 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2236 if (index == NAME_NOT_FOUND) { 2237 // invalid camera ID or the camera doesn't have a flash unit 2238 return NAME_NOT_FOUND; 2239 } 2240 2241 *status = mTorchStatusMap.valueAt(index); 2242 return OK; 2243} 2244 2245status_t CameraService::setTorchStatusLocked(const String8& cameraId, 2246 ICameraServiceListener::TorchStatus status) { 2247 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2248 if (index == NAME_NOT_FOUND) { 2249 return BAD_VALUE; 2250 } 2251 ICameraServiceListener::TorchStatus& item = 2252 mTorchStatusMap.editValueAt(index); 2253 item = status; 2254 2255 return OK; 2256} 2257 2258}; // namespace android 2259