CameraService.cpp revision 280405a138a0068694f3c39b4290f510173133d9
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 int err = hw_get_module(CAMERA_HARDWARE_MODULE_ID, 144 (const hw_module_t **)&rawModule); 145 if (err < 0) { 146 ALOGE("Could not load camera HAL module: %d (%s)", err, strerror(-err)); 147 logServiceError("Could not load camera HAL module", err); 148 mNumberOfCameras = 0; 149 return; 150 } 151 152 mModule = new CameraModule(rawModule); 153 ALOGI("Loaded \"%s\" camera module", mModule->getModuleName()); 154 err = mModule->init(); 155 if (err != OK) { 156 ALOGE("Could not initialize camera HAL module: %d (%s)", err, 157 strerror(-err)); 158 logServiceError("Could not initialize camera HAL module", err); 159 160 mNumberOfCameras = 0; 161 delete mModule; 162 mModule = nullptr; 163 return; 164 } 165 166 mNumberOfCameras = mModule->getNumberOfCameras(); 167 168 mFlashlight = new CameraFlashlight(*mModule, *this); 169 status_t res = mFlashlight->findFlashUnits(); 170 if (res) { 171 // impossible because we haven't open any camera devices. 172 ALOGE("Failed to find flash units."); 173 } 174 175 for (int i = 0; i < mNumberOfCameras; i++) { 176 String8 cameraId = String8::format("%d", i); 177 178 // Defaults to use for cost and conflicting devices 179 int cost = 100; 180 char** conflicting_devices = nullptr; 181 size_t conflicting_devices_length = 0; 182 183 // If using post-2.4 module version, query the cost + conflicting devices from the HAL 184 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_4) { 185 struct camera_info info; 186 status_t rc = mModule->getCameraInfo(i, &info); 187 if (rc == NO_ERROR) { 188 cost = info.resource_cost; 189 conflicting_devices = info.conflicting_devices; 190 conflicting_devices_length = info.conflicting_devices_length; 191 } else { 192 ALOGE("%s: Received error loading camera info for device %d, cost and" 193 " conflicting devices fields set to defaults for this device.", 194 __FUNCTION__, i); 195 } 196 } 197 198 std::set<String8> conflicting; 199 for (size_t i = 0; i < conflicting_devices_length; i++) { 200 conflicting.emplace(String8(conflicting_devices[i])); 201 } 202 203 // Initialize state for each camera device 204 { 205 Mutex::Autolock lock(mCameraStatesLock); 206 mCameraStates.emplace(cameraId, std::make_shared<CameraState>(cameraId, cost, 207 conflicting)); 208 } 209 210 if (mFlashlight->hasFlashUnit(cameraId)) { 211 mTorchStatusMap.add(cameraId, 212 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF); 213 } 214 } 215 216 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_1) { 217 mModule->setCallbacks(this); 218 } 219 220 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 221 222 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_2) { 223 setUpVendorTags(); 224 } 225 226 CameraDeviceFactory::registerService(this); 227} 228 229CameraService::~CameraService() { 230 if (mModule) { 231 delete mModule; 232 mModule = nullptr; 233 } 234 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 235 gCameraService = nullptr; 236} 237 238void CameraService::onDeviceStatusChanged(camera_device_status_t cameraId, 239 camera_device_status_t newStatus) { 240 ALOGI("%s: Status changed for cameraId=%d, newStatus=%d", __FUNCTION__, 241 cameraId, newStatus); 242 243 String8 id = String8::format("%d", cameraId); 244 std::shared_ptr<CameraState> state = getCameraState(id); 245 246 if (state == nullptr) { 247 ALOGE("%s: Bad camera ID %d", __FUNCTION__, cameraId); 248 return; 249 } 250 251 ICameraServiceListener::Status oldStatus = state->getStatus(); 252 253 if (oldStatus == static_cast<ICameraServiceListener::Status>(newStatus)) { 254 ALOGE("%s: State transition to the same status %#x not allowed", __FUNCTION__, newStatus); 255 return; 256 } 257 258 if (newStatus == CAMERA_DEVICE_STATUS_NOT_PRESENT) { 259 logDeviceRemoved(id, String8::format("Device status changed from %d to %d", oldStatus, 260 newStatus)); 261 sp<BasicClient> clientToDisconnect; 262 { 263 // Don't do this in updateStatus to avoid deadlock over mServiceLock 264 Mutex::Autolock lock(mServiceLock); 265 266 // Set the device status to NOT_PRESENT, clients will no longer be able to connect 267 // to this device until the status changes 268 updateStatus(ICameraServiceListener::STATUS_NOT_PRESENT, id); 269 270 // Remove cached shim parameters 271 state->setShimParams(CameraParameters()); 272 273 // Remove the client from the list of active clients 274 clientToDisconnect = removeClientLocked(id); 275 276 // Notify the client of disconnection 277 clientToDisconnect->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 278 CaptureResultExtras{}); 279 } 280 281 ALOGI("%s: Client for camera ID %s evicted due to device status change from HAL", 282 __FUNCTION__, id.string()); 283 284 // Disconnect client 285 if (clientToDisconnect.get() != nullptr) { 286 // Ensure not in binder RPC so client disconnect PID checks work correctly 287 LOG_ALWAYS_FATAL_IF(getCallingPid() != getpid(), 288 "onDeviceStatusChanged must be called from the camera service process!"); 289 clientToDisconnect->disconnect(); 290 } 291 292 } else { 293 if (oldStatus == ICameraServiceListener::Status::STATUS_NOT_PRESENT) { 294 logDeviceAdded(id, String8::format("Device status changed from %d to %d", oldStatus, 295 newStatus)); 296 } 297 updateStatus(static_cast<ICameraServiceListener::Status>(newStatus), id); 298 } 299 300} 301 302void CameraService::onTorchStatusChanged(const String8& cameraId, 303 ICameraServiceListener::TorchStatus newStatus) { 304 Mutex::Autolock al(mTorchStatusMutex); 305 onTorchStatusChangedLocked(cameraId, newStatus); 306} 307 308void CameraService::onTorchStatusChangedLocked(const String8& cameraId, 309 ICameraServiceListener::TorchStatus newStatus) { 310 ALOGI("%s: Torch status changed for cameraId=%s, newStatus=%d", 311 __FUNCTION__, cameraId.string(), newStatus); 312 313 ICameraServiceListener::TorchStatus status; 314 status_t res = getTorchStatusLocked(cameraId, &status); 315 if (res) { 316 ALOGE("%s: cannot get torch status of camera %s: %s (%d)", 317 __FUNCTION__, cameraId.string(), strerror(-res), res); 318 return; 319 } 320 if (status == newStatus) { 321 return; 322 } 323 324 res = setTorchStatusLocked(cameraId, newStatus); 325 if (res) { 326 ALOGE("%s: Failed to set the torch status", __FUNCTION__, 327 (uint32_t)newStatus); 328 return; 329 } 330 331 { 332 Mutex::Autolock lock(mStatusListenerLock); 333 for (auto& i : mListenerList) { 334 i->onTorchStatusChanged(newStatus, String16{cameraId}); 335 } 336 } 337} 338 339 340int32_t CameraService::getNumberOfCameras() { 341 return mNumberOfCameras; 342} 343 344status_t CameraService::getCameraInfo(int cameraId, 345 struct CameraInfo* cameraInfo) { 346 if (!mModule) { 347 return -ENODEV; 348 } 349 350 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 351 return BAD_VALUE; 352 } 353 354 struct camera_info info; 355 status_t rc = filterGetInfoErrorCode( 356 mModule->getCameraInfo(cameraId, &info)); 357 cameraInfo->facing = info.facing; 358 cameraInfo->orientation = info.orientation; 359 return rc; 360} 361 362int CameraService::cameraIdToInt(const String8& cameraId) { 363 errno = 0; 364 size_t pos = 0; 365 int ret = stoi(std::string{cameraId.string()}, &pos); 366 if (errno != 0 || pos != cameraId.size()) { 367 return -1; 368 } 369 return ret; 370} 371 372status_t CameraService::generateShimMetadata(int cameraId, /*out*/CameraMetadata* cameraInfo) { 373 status_t ret = OK; 374 struct CameraInfo info; 375 if ((ret = getCameraInfo(cameraId, &info)) != OK) { 376 return ret; 377 } 378 379 CameraMetadata shimInfo; 380 int32_t orientation = static_cast<int32_t>(info.orientation); 381 if ((ret = shimInfo.update(ANDROID_SENSOR_ORIENTATION, &orientation, 1)) != OK) { 382 return ret; 383 } 384 385 uint8_t facing = (info.facing == CAMERA_FACING_FRONT) ? 386 ANDROID_LENS_FACING_FRONT : ANDROID_LENS_FACING_BACK; 387 if ((ret = shimInfo.update(ANDROID_LENS_FACING, &facing, 1)) != OK) { 388 return ret; 389 } 390 391 CameraParameters shimParams; 392 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 393 // Error logged by callee 394 return ret; 395 } 396 397 Vector<Size> sizes; 398 Vector<Size> jpegSizes; 399 Vector<int32_t> formats; 400 const char* supportedPreviewFormats; 401 { 402 shimParams.getSupportedPreviewSizes(/*out*/sizes); 403 shimParams.getSupportedPreviewFormats(/*out*/formats); 404 shimParams.getSupportedPictureSizes(/*out*/jpegSizes); 405 } 406 407 // Always include IMPLEMENTATION_DEFINED 408 formats.add(HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED); 409 410 const size_t INTS_PER_CONFIG = 4; 411 412 // Build available stream configurations metadata 413 size_t streamConfigSize = (sizes.size() * formats.size() + jpegSizes.size()) * INTS_PER_CONFIG; 414 415 Vector<int32_t> streamConfigs; 416 streamConfigs.setCapacity(streamConfigSize); 417 418 for (size_t i = 0; i < formats.size(); ++i) { 419 for (size_t j = 0; j < sizes.size(); ++j) { 420 streamConfigs.add(formats[i]); 421 streamConfigs.add(sizes[j].width); 422 streamConfigs.add(sizes[j].height); 423 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 424 } 425 } 426 427 for (size_t i = 0; i < jpegSizes.size(); ++i) { 428 streamConfigs.add(HAL_PIXEL_FORMAT_BLOB); 429 streamConfigs.add(jpegSizes[i].width); 430 streamConfigs.add(jpegSizes[i].height); 431 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 432 } 433 434 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS, 435 streamConfigs.array(), streamConfigSize)) != OK) { 436 return ret; 437 } 438 439 int64_t fakeMinFrames[0]; 440 // TODO: Fixme, don't fake min frame durations. 441 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS, 442 fakeMinFrames, 0)) != OK) { 443 return ret; 444 } 445 446 int64_t fakeStalls[0]; 447 // TODO: Fixme, don't fake stall durations. 448 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STALL_DURATIONS, 449 fakeStalls, 0)) != OK) { 450 return ret; 451 } 452 453 *cameraInfo = shimInfo; 454 return OK; 455} 456 457status_t CameraService::getCameraCharacteristics(int cameraId, 458 CameraMetadata* cameraInfo) { 459 if (!cameraInfo) { 460 ALOGE("%s: cameraInfo is NULL", __FUNCTION__); 461 return BAD_VALUE; 462 } 463 464 if (!mModule) { 465 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 466 return -ENODEV; 467 } 468 469 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 470 ALOGE("%s: Invalid camera id: %d", __FUNCTION__, cameraId); 471 return BAD_VALUE; 472 } 473 474 int facing; 475 status_t ret = OK; 476 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0 || 477 getDeviceVersion(cameraId, &facing) <= CAMERA_DEVICE_API_VERSION_2_1 ) { 478 /** 479 * Backwards compatibility mode for old HALs: 480 * - Convert CameraInfo into static CameraMetadata properties. 481 * - Retrieve cached CameraParameters for this camera. If none exist, 482 * attempt to open CameraClient and retrieve the CameraParameters. 483 * - Convert cached CameraParameters into static CameraMetadata 484 * properties. 485 */ 486 ALOGI("%s: Switching to HAL1 shim implementation...", __FUNCTION__); 487 488 if ((ret = generateShimMetadata(cameraId, cameraInfo)) != OK) { 489 return ret; 490 } 491 492 } else { 493 /** 494 * Normal HAL 2.1+ codepath. 495 */ 496 struct camera_info info; 497 ret = filterGetInfoErrorCode(mModule->getCameraInfo(cameraId, &info)); 498 *cameraInfo = info.static_camera_characteristics; 499 } 500 501 return ret; 502} 503 504int CameraService::getCallingPid() { 505 return IPCThreadState::self()->getCallingPid(); 506} 507 508int CameraService::getCallingUid() { 509 return IPCThreadState::self()->getCallingUid(); 510} 511 512String8 CameraService::getFormattedCurrentTime() { 513 time_t now = time(nullptr); 514 char formattedTime[64]; 515 strftime(formattedTime, sizeof(formattedTime), "%m-%d %H:%M:%S", localtime(&now)); 516 return String8(formattedTime); 517} 518 519int CameraService::getCameraPriorityFromProcState(int procState) { 520 // Find the priority for the camera usage based on the process state. Higher priority clients 521 // win for evictions. 522 // Note: Unlike the ordering for ActivityManager, persistent system processes will always lose 523 // the camera to the top/foreground applications. 524 switch(procState) { 525 case PROCESS_STATE_TOP: // User visible 526 return 100; 527 case PROCESS_STATE_IMPORTANT_FOREGROUND: // Foreground 528 return 90; 529 case PROCESS_STATE_PERSISTENT: // Persistent system services 530 case PROCESS_STATE_PERSISTENT_UI: 531 return 80; 532 case PROCESS_STATE_IMPORTANT_BACKGROUND: // "Important" background processes 533 return 70; 534 case PROCESS_STATE_BACKUP: // Everything else 535 case PROCESS_STATE_HEAVY_WEIGHT: 536 case PROCESS_STATE_SERVICE: 537 case PROCESS_STATE_RECEIVER: 538 case PROCESS_STATE_HOME: 539 case PROCESS_STATE_LAST_ACTIVITY: 540 case PROCESS_STATE_CACHED_ACTIVITY: 541 case PROCESS_STATE_CACHED_ACTIVITY_CLIENT: 542 case PROCESS_STATE_CACHED_EMPTY: 543 return 1; 544 case PROCESS_STATE_NONEXISTENT: 545 return -1; 546 default: 547 ALOGE("%s: Received unknown process state from ActivityManagerService!", __FUNCTION__); 548 return -1; 549 } 550} 551 552status_t CameraService::getCameraVendorTagDescriptor(/*out*/sp<VendorTagDescriptor>& desc) { 553 if (!mModule) { 554 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 555 return -ENODEV; 556 } 557 558 desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 559 return OK; 560} 561 562int CameraService::getDeviceVersion(int cameraId, int* facing) { 563 struct camera_info info; 564 if (mModule->getCameraInfo(cameraId, &info) != OK) { 565 return -1; 566 } 567 568 int deviceVersion; 569 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) { 570 deviceVersion = info.device_version; 571 } else { 572 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 573 } 574 575 if (facing) { 576 *facing = info.facing; 577 } 578 579 return deviceVersion; 580} 581 582status_t CameraService::filterGetInfoErrorCode(status_t err) { 583 switch(err) { 584 case NO_ERROR: 585 case -EINVAL: 586 return err; 587 default: 588 break; 589 } 590 return -ENODEV; 591} 592 593bool CameraService::setUpVendorTags() { 594 vendor_tag_ops_t vOps = vendor_tag_ops_t(); 595 596 // Check if vendor operations have been implemented 597 if (!mModule->isVendorTagDefined()) { 598 ALOGI("%s: No vendor tags defined for this device.", __FUNCTION__); 599 return false; 600 } 601 602 ATRACE_BEGIN("camera3->get_metadata_vendor_tag_ops"); 603 mModule->getVendorTagOps(&vOps); 604 ATRACE_END(); 605 606 // Ensure all vendor operations are present 607 if (vOps.get_tag_count == NULL || vOps.get_all_tags == NULL || 608 vOps.get_section_name == NULL || vOps.get_tag_name == NULL || 609 vOps.get_tag_type == NULL) { 610 ALOGE("%s: Vendor tag operations not fully defined. Ignoring definitions." 611 , __FUNCTION__); 612 return false; 613 } 614 615 // Read all vendor tag definitions into a descriptor 616 sp<VendorTagDescriptor> desc; 617 status_t res; 618 if ((res = VendorTagDescriptor::createDescriptorFromOps(&vOps, /*out*/desc)) 619 != OK) { 620 ALOGE("%s: Could not generate descriptor from vendor tag operations," 621 "received error %s (%d). Camera clients will not be able to use" 622 "vendor tags", __FUNCTION__, strerror(res), res); 623 return false; 624 } 625 626 // Set the global descriptor to use with camera metadata 627 VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc); 628 return true; 629} 630 631status_t CameraService::makeClient(const sp<CameraService>& cameraService, 632 const sp<IInterface>& cameraCb, const String16& packageName, const String8& cameraId, 633 int facing, int clientPid, uid_t clientUid, int servicePid, bool legacyMode, 634 int halVersion, int deviceVersion, apiLevel effectiveApiLevel, 635 /*out*/sp<BasicClient>* client) { 636 637 // TODO: Update CameraClients + HAL interface to use strings for Camera IDs 638 int id = cameraIdToInt(cameraId); 639 if (id == -1) { 640 ALOGE("%s: Invalid camera ID %s, cannot convert to integer.", __FUNCTION__, 641 cameraId.string()); 642 return BAD_VALUE; 643 } 644 645 if (halVersion < 0 || halVersion == deviceVersion) { 646 // Default path: HAL version is unspecified by caller, create CameraClient 647 // based on device version reported by the HAL. 648 switch(deviceVersion) { 649 case CAMERA_DEVICE_API_VERSION_1_0: 650 if (effectiveApiLevel == API_1) { // Camera1 API route 651 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 652 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 653 clientPid, clientUid, getpid(), legacyMode); 654 } else { // Camera2 API route 655 ALOGW("Camera using old HAL version: %d", deviceVersion); 656 return -EOPNOTSUPP; 657 } 658 break; 659 case CAMERA_DEVICE_API_VERSION_2_0: 660 case CAMERA_DEVICE_API_VERSION_2_1: 661 case CAMERA_DEVICE_API_VERSION_3_0: 662 case CAMERA_DEVICE_API_VERSION_3_1: 663 case CAMERA_DEVICE_API_VERSION_3_2: 664 case CAMERA_DEVICE_API_VERSION_3_3: 665 if (effectiveApiLevel == API_1) { // Camera1 API route 666 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 667 *client = new Camera2Client(cameraService, tmp, packageName, id, facing, 668 clientPid, clientUid, servicePid, legacyMode); 669 } else { // Camera2 API route 670 sp<ICameraDeviceCallbacks> tmp = 671 static_cast<ICameraDeviceCallbacks*>(cameraCb.get()); 672 *client = new CameraDeviceClient(cameraService, tmp, packageName, id, 673 facing, clientPid, clientUid, servicePid); 674 } 675 break; 676 default: 677 // Should not be reachable 678 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 679 return INVALID_OPERATION; 680 } 681 } else { 682 // A particular HAL version is requested by caller. Create CameraClient 683 // based on the requested HAL version. 684 if (deviceVersion > CAMERA_DEVICE_API_VERSION_1_0 && 685 halVersion == CAMERA_DEVICE_API_VERSION_1_0) { 686 // Only support higher HAL version device opened as HAL1.0 device. 687 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 688 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 689 clientPid, clientUid, servicePid, legacyMode); 690 } else { 691 // Other combinations (e.g. HAL3.x open as HAL2.x) are not supported yet. 692 ALOGE("Invalid camera HAL version %x: HAL %x device can only be" 693 " opened as HAL %x device", halVersion, deviceVersion, 694 CAMERA_DEVICE_API_VERSION_1_0); 695 return INVALID_OPERATION; 696 } 697 } 698 return NO_ERROR; 699} 700 701status_t CameraService::initializeShimMetadata(int cameraId) { 702 int uid = getCallingUid(); 703 704 String16 internalPackageName("media"); 705 String8 id = String8::format("%d", cameraId); 706 status_t ret = NO_ERROR; 707 sp<Client> tmp = nullptr; 708 if ((ret = connectHelper<ICameraClient,Client>(sp<ICameraClient>{nullptr}, id, 709 static_cast<int>(CAMERA_HAL_API_VERSION_UNSPECIFIED), internalPackageName, uid, API_1, 710 false, true, tmp)) != NO_ERROR) { 711 ALOGE("%s: Error %d (%s) initializing shim metadata.", __FUNCTION__, ret, strerror(ret)); 712 return ret; 713 } 714 return NO_ERROR; 715} 716 717status_t CameraService::getLegacyParametersLazy(int cameraId, 718 /*out*/ 719 CameraParameters* parameters) { 720 721 ALOGV("%s: for cameraId: %d", __FUNCTION__, cameraId); 722 723 status_t ret = 0; 724 725 if (parameters == NULL) { 726 ALOGE("%s: parameters must not be null", __FUNCTION__); 727 return BAD_VALUE; 728 } 729 730 String8 id = String8::format("%d", cameraId); 731 732 // Check if we already have parameters 733 { 734 // Scope for service lock 735 Mutex::Autolock lock(mServiceLock); 736 auto cameraState = getCameraState(id); 737 if (cameraState == nullptr) { 738 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 739 return BAD_VALUE; 740 } 741 CameraParameters p = cameraState->getShimParams(); 742 if (!p.isEmpty()) { 743 *parameters = p; 744 return NO_ERROR; 745 } 746 } 747 748 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 749 ret = initializeShimMetadata(cameraId); 750 IPCThreadState::self()->restoreCallingIdentity(token); 751 if (ret != NO_ERROR) { 752 // Error already logged by callee 753 return ret; 754 } 755 756 // Check for parameters again 757 { 758 // Scope for service lock 759 Mutex::Autolock lock(mServiceLock); 760 auto cameraState = getCameraState(id); 761 if (cameraState == nullptr) { 762 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 763 return BAD_VALUE; 764 } 765 CameraParameters p = cameraState->getShimParams(); 766 if (!p.isEmpty()) { 767 *parameters = p; 768 return NO_ERROR; 769 } 770 } 771 772 ALOGE("%s: Parameters were not initialized, or were empty. Device may not be present.", 773 __FUNCTION__); 774 return INVALID_OPERATION; 775} 776 777status_t CameraService::validateConnectLocked(const String8& cameraId, /*inout*/int& clientUid) 778 const { 779 780 int callingPid = getCallingPid(); 781 782 if (clientUid == USE_CALLING_UID) { 783 clientUid = getCallingUid(); 784 } else { 785 // We only trust our own process to forward client UIDs 786 if (callingPid != getpid()) { 787 ALOGE("CameraService::connect X (PID %d) rejected (don't trust clientUid %d)", 788 callingPid, clientUid); 789 return PERMISSION_DENIED; 790 } 791 } 792 793 if (!mModule) { 794 ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)", 795 callingPid); 796 return -ENODEV; 797 } 798 799 if (getCameraState(cameraId) == nullptr) { 800 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 801 cameraId.string()); 802 return -ENODEV; 803 } 804 805 // Check device policy for this camera 806 char value[PROPERTY_VALUE_MAX]; 807 char key[PROPERTY_KEY_MAX]; 808 int clientUserId = multiuser_get_user_id(clientUid); 809 snprintf(key, PROPERTY_KEY_MAX, "sys.secpolicy.camera.off_%d", clientUserId); 810 property_get(key, value, "0"); 811 if (strcmp(value, "1") == 0) { 812 // Camera is disabled by DevicePolicyManager. 813 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is disabled by device " 814 "policy)", callingPid, cameraId.string()); 815 return -EACCES; 816 } 817 818 // Only allow clients who are being used by the current foreground device user, unless calling 819 // from our own process. 820 if (callingPid != getpid() && 821 (mLastUserId != clientUserId && mLastUserId != DEFAULT_LAST_USER_ID)) { 822 ALOGE("CameraService::connect X (PID %d) rejected (cannot connect from previous " 823 "device user %d, current device user %d)", callingPid, clientUserId, mLastUserId); 824 return PERMISSION_DENIED; 825 } 826 827 return checkIfDeviceIsUsable(cameraId); 828} 829 830status_t CameraService::checkIfDeviceIsUsable(const String8& cameraId) const { 831 auto cameraState = getCameraState(cameraId); 832 int callingPid = getCallingPid(); 833 if (cameraState == nullptr) { 834 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 835 cameraId.string()); 836 return -ENODEV; 837 } 838 839 ICameraServiceListener::Status currentStatus = cameraState->getStatus(); 840 if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { 841 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is not connected)", 842 callingPid, cameraId.string()); 843 return -ENODEV; 844 } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) { 845 ALOGE("CameraService::connect X (PID %d) rejected, (camera %s is initializing)", 846 callingPid, cameraId.string()); 847 return -EBUSY; 848 } 849 850 return NO_ERROR; 851} 852 853void CameraService::finishConnectLocked(const sp<BasicClient>& client, 854 const CameraService::DescriptorPtr& desc) { 855 856 // Make a descriptor for the incoming client 857 auto clientDescriptor = CameraService::CameraClientManager::makeClientDescriptor(client, desc); 858 auto evicted = mActiveClientManager.addAndEvict(clientDescriptor); 859 860 logConnected(desc->getKey(), static_cast<int>(desc->getOwnerId()), 861 String8(client->getPackageName())); 862 863 if (evicted.size() > 0) { 864 // This should never happen - clients should already have been removed in disconnect 865 for (auto& i : evicted) { 866 ALOGE("%s: Invalid state: Client for camera %s was not removed in disconnect", 867 __FUNCTION__, i->getKey().string()); 868 } 869 870 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, clients not evicted properly", 871 __FUNCTION__); 872 } 873} 874 875status_t CameraService::handleEvictionsLocked(const String8& cameraId, int clientPid, 876 apiLevel effectiveApiLevel, const sp<IBinder>& remoteCallback, const String8& packageName, 877 /*out*/ 878 sp<BasicClient>* client, 879 std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>* partial) { 880 881 status_t ret = NO_ERROR; 882 std::vector<DescriptorPtr> evictedClients; 883 DescriptorPtr clientDescriptor; 884 { 885 if (effectiveApiLevel == API_1) { 886 // If we are using API1, any existing client for this camera ID with the same remote 887 // should be returned rather than evicted to allow MediaRecorder to work properly. 888 889 auto current = mActiveClientManager.get(cameraId); 890 if (current != nullptr) { 891 auto clientSp = current->getValue(); 892 if (clientSp.get() != nullptr) { // should never be needed 893 if (!clientSp->canCastToApiClient(effectiveApiLevel)) { 894 ALOGW("CameraService connect called from same client, but with a different" 895 " API level, evicting prior client..."); 896 } else if (clientSp->getRemote() == remoteCallback) { 897 ALOGI("CameraService::connect X (PID %d) (second call from same" 898 " app binder, returning the same client)", clientPid); 899 *client = clientSp; 900 return NO_ERROR; 901 } 902 } 903 } 904 } 905 906 // Return error if the device was unplugged or removed by the HAL for some reason 907 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 908 return ret; 909 } 910 911 // Get current active client PIDs 912 std::vector<int> ownerPids(mActiveClientManager.getAllOwners()); 913 ownerPids.push_back(clientPid); 914 915 // Use the value +PROCESS_STATE_NONEXISTENT, to avoid taking 916 // address of PROCESS_STATE_NONEXISTENT as a reference argument 917 // for the vector constructor. PROCESS_STATE_NONEXISTENT does 918 // not have an out-of-class definition. 919 std::vector<int> priorities(ownerPids.size(), +PROCESS_STATE_NONEXISTENT); 920 921 // Get priorites of all active PIDs 922 ProcessInfoService::getProcessStatesFromPids(ownerPids.size(), &ownerPids[0], 923 /*out*/&priorities[0]); 924 925 // Update all active clients' priorities 926 std::map<int,int> pidToPriorityMap; 927 for (size_t i = 0; i < ownerPids.size() - 1; i++) { 928 pidToPriorityMap.emplace(ownerPids[i], getCameraPriorityFromProcState(priorities[i])); 929 } 930 mActiveClientManager.updatePriorities(pidToPriorityMap); 931 932 // Get state for the given cameraId 933 auto state = getCameraState(cameraId); 934 if (state == nullptr) { 935 ALOGE("CameraService::connect X (PID %d) rejected (no camera device with ID %s)", 936 clientPid, cameraId.string()); 937 return BAD_VALUE; 938 } 939 940 // Make descriptor for incoming client 941 clientDescriptor = CameraClientManager::makeClientDescriptor(cameraId, 942 sp<BasicClient>{nullptr}, static_cast<int32_t>(state->getCost()), 943 state->getConflicting(), 944 getCameraPriorityFromProcState(priorities[priorities.size() - 1]), clientPid); 945 946 // Find clients that would be evicted 947 auto evicted = mActiveClientManager.wouldEvict(clientDescriptor); 948 949 // If the incoming client was 'evicted,' higher priority clients have the camera in the 950 // background, so we cannot do evictions 951 if (std::find(evicted.begin(), evicted.end(), clientDescriptor) != evicted.end()) { 952 ALOGE("CameraService::connect X (PID %d) rejected (existing client(s) with higher" 953 " priority).", clientPid); 954 955 sp<BasicClient> clientSp = clientDescriptor->getValue(); 956 String8 curTime = getFormattedCurrentTime(); 957 auto incompatibleClients = 958 mActiveClientManager.getIncompatibleClients(clientDescriptor); 959 960 String8 msg = String8::format("%s : DENIED connect device %s client for package %s " 961 "(PID %d, priority %d) due to eviction policy", curTime.string(), 962 cameraId.string(), packageName.string(), clientPid, 963 getCameraPriorityFromProcState(priorities[priorities.size() - 1])); 964 965 for (auto& i : incompatibleClients) { 966 msg.appendFormat("\n - Blocked by existing device %s client for package %s" 967 "(PID %" PRId32 ", priority %" PRId32 ")", i->getKey().string(), 968 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 969 i->getPriority()); 970 } 971 972 // Log the client's attempt 973 Mutex::Autolock l(mLogLock); 974 mEventLog.add(msg); 975 976 return -EBUSY; 977 } 978 979 for (auto& i : evicted) { 980 sp<BasicClient> clientSp = i->getValue(); 981 if (clientSp.get() == nullptr) { 982 ALOGE("%s: Invalid state: Null client in active client list.", __FUNCTION__); 983 984 // TODO: Remove this 985 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, null client in active list", 986 __FUNCTION__); 987 mActiveClientManager.remove(i); 988 continue; 989 } 990 991 ALOGE("CameraService::connect evicting conflicting client for camera ID %s", 992 i->getKey().string()); 993 evictedClients.push_back(i); 994 995 // Log the clients evicted 996 logEvent(String8::format("EVICT device %s client held by package %s (PID" 997 " %" PRId32 ", priority %" PRId32 ")\n - Evicted by device %s client for" 998 " package %s (PID %d, priority %" PRId32 ")", 999 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1000 i->getOwnerId(), i->getPriority(), cameraId.string(), 1001 packageName.string(), clientPid, 1002 getCameraPriorityFromProcState(priorities[priorities.size() - 1]))); 1003 1004 // Notify the client of disconnection 1005 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1006 CaptureResultExtras()); 1007 } 1008 } 1009 1010 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1011 // other clients from connecting in mServiceLockWrapper if held 1012 mServiceLock.unlock(); 1013 1014 // Clear caller identity temporarily so client disconnect PID checks work correctly 1015 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1016 1017 // Destroy evicted clients 1018 for (auto& i : evictedClients) { 1019 // Disconnect is blocking, and should only have returned when HAL has cleaned up 1020 i->getValue()->disconnect(); // Clients will remove themselves from the active client list 1021 } 1022 1023 IPCThreadState::self()->restoreCallingIdentity(token); 1024 1025 for (const auto& i : evictedClients) { 1026 ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")", 1027 __FUNCTION__, i->getKey().string(), i->getOwnerId()); 1028 ret = mActiveClientManager.waitUntilRemoved(i, DEFAULT_DISCONNECT_TIMEOUT_NS); 1029 if (ret == TIMED_OUT) { 1030 ALOGE("%s: Timed out waiting for client for device %s to disconnect, " 1031 "current clients:\n%s", __FUNCTION__, i->getKey().string(), 1032 mActiveClientManager.toString().string()); 1033 return -EBUSY; 1034 } 1035 if (ret != NO_ERROR) { 1036 ALOGE("%s: Received error waiting for client for device %s to disconnect: %s (%d), " 1037 "current clients:\n%s", __FUNCTION__, i->getKey().string(), strerror(-ret), 1038 ret, mActiveClientManager.toString().string()); 1039 return ret; 1040 } 1041 } 1042 1043 evictedClients.clear(); 1044 1045 // Once clients have been disconnected, relock 1046 mServiceLock.lock(); 1047 1048 // Check again if the device was unplugged or something while we weren't holding mServiceLock 1049 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1050 return ret; 1051 } 1052 1053 *partial = clientDescriptor; 1054 return NO_ERROR; 1055} 1056 1057status_t CameraService::connect( 1058 const sp<ICameraClient>& cameraClient, 1059 int cameraId, 1060 const String16& clientPackageName, 1061 int clientUid, 1062 /*out*/ 1063 sp<ICamera>& device) { 1064 1065 status_t ret = NO_ERROR; 1066 String8 id = String8::format("%d", cameraId); 1067 sp<Client> client = nullptr; 1068 ret = connectHelper<ICameraClient,Client>(cameraClient, id, CAMERA_HAL_API_VERSION_UNSPECIFIED, 1069 clientPackageName, clientUid, API_1, false, false, /*out*/client); 1070 1071 if(ret != NO_ERROR) { 1072 logRejected(id, getCallingPid(), String8(clientPackageName), 1073 String8::format("%s (%d)", strerror(-ret), ret)); 1074 return ret; 1075 } 1076 1077 device = client; 1078 return NO_ERROR; 1079} 1080 1081status_t CameraService::connectLegacy( 1082 const sp<ICameraClient>& cameraClient, 1083 int cameraId, int halVersion, 1084 const String16& clientPackageName, 1085 int clientUid, 1086 /*out*/ 1087 sp<ICamera>& device) { 1088 1089 String8 id = String8::format("%d", cameraId); 1090 int apiVersion = mModule->getModuleApiVersion(); 1091 if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED && 1092 apiVersion < CAMERA_MODULE_API_VERSION_2_3) { 1093 /* 1094 * Either the HAL version is unspecified in which case this just creates 1095 * a camera client selected by the latest device version, or 1096 * it's a particular version in which case the HAL must supported 1097 * the open_legacy call 1098 */ 1099 ALOGE("%s: camera HAL module version %x doesn't support connecting to legacy HAL devices!", 1100 __FUNCTION__, apiVersion); 1101 logRejected(id, getCallingPid(), String8(clientPackageName), 1102 String8("HAL module version doesn't support legacy HAL connections")); 1103 return INVALID_OPERATION; 1104 } 1105 1106 status_t ret = NO_ERROR; 1107 sp<Client> client = nullptr; 1108 ret = connectHelper<ICameraClient,Client>(cameraClient, id, halVersion, clientPackageName, 1109 clientUid, API_1, true, false, /*out*/client); 1110 1111 if(ret != NO_ERROR) { 1112 logRejected(id, getCallingPid(), String8(clientPackageName), 1113 String8::format("%s (%d)", strerror(-ret), ret)); 1114 return ret; 1115 } 1116 1117 device = client; 1118 return NO_ERROR; 1119} 1120 1121status_t CameraService::connectDevice( 1122 const sp<ICameraDeviceCallbacks>& cameraCb, 1123 int cameraId, 1124 const String16& clientPackageName, 1125 int clientUid, 1126 /*out*/ 1127 sp<ICameraDeviceUser>& device) { 1128 1129 status_t ret = NO_ERROR; 1130 String8 id = String8::format("%d", cameraId); 1131 sp<CameraDeviceClient> client = nullptr; 1132 ret = connectHelper<ICameraDeviceCallbacks,CameraDeviceClient>(cameraCb, id, 1133 CAMERA_HAL_API_VERSION_UNSPECIFIED, clientPackageName, clientUid, API_2, false, false, 1134 /*out*/client); 1135 1136 if(ret != NO_ERROR) { 1137 logRejected(id, getCallingPid(), String8(clientPackageName), 1138 String8::format("%s (%d)", strerror(-ret), ret)); 1139 return ret; 1140 } 1141 1142 device = client; 1143 return NO_ERROR; 1144} 1145 1146status_t CameraService::setTorchMode(const String16& cameraId, bool enabled, 1147 const sp<IBinder>& clientBinder) { 1148 if (enabled && clientBinder == NULL) { 1149 ALOGE("%s: torch client binder is NULL", __FUNCTION__); 1150 return -EINVAL; 1151 } 1152 1153 String8 id = String8(cameraId.string()); 1154 1155 // verify id is valid. 1156 auto state = getCameraState(id); 1157 if (state == nullptr) { 1158 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1159 return -EINVAL; 1160 } 1161 1162 ICameraServiceListener::Status cameraStatus = state->getStatus(); 1163 if (cameraStatus != ICameraServiceListener::STATUS_PRESENT && 1164 cameraStatus != ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1165 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1166 return -EINVAL; 1167 } 1168 1169 { 1170 Mutex::Autolock al(mTorchStatusMutex); 1171 ICameraServiceListener::TorchStatus status; 1172 status_t res = getTorchStatusLocked(id, &status); 1173 if (res) { 1174 ALOGE("%s: getting current torch status failed for camera %s", 1175 __FUNCTION__, id.string()); 1176 return -EINVAL; 1177 } 1178 1179 if (status == ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE) { 1180 if (cameraStatus == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1181 ALOGE("%s: torch mode of camera %s is not available because " 1182 "camera is in use", __FUNCTION__, id.string()); 1183 return -EBUSY; 1184 } else { 1185 ALOGE("%s: torch mode of camera %s is not available due to " 1186 "insufficient resources", __FUNCTION__, id.string()); 1187 return -EUSERS; 1188 } 1189 } 1190 } 1191 1192 status_t res = mFlashlight->setTorchMode(id, enabled); 1193 if (res) { 1194 ALOGE("%s: setting torch mode of camera %s to %d failed. %s (%d)", 1195 __FUNCTION__, id.string(), enabled, strerror(-res), res); 1196 return res; 1197 } 1198 1199 { 1200 // update the link to client's death 1201 Mutex::Autolock al(mTorchClientMapMutex); 1202 ssize_t index = mTorchClientMap.indexOfKey(id); 1203 if (enabled) { 1204 if (index == NAME_NOT_FOUND) { 1205 mTorchClientMap.add(id, clientBinder); 1206 } else { 1207 const sp<IBinder> oldBinder = mTorchClientMap.valueAt(index); 1208 oldBinder->unlinkToDeath(this); 1209 1210 mTorchClientMap.replaceValueAt(index, clientBinder); 1211 } 1212 clientBinder->linkToDeath(this); 1213 } else if (index != NAME_NOT_FOUND) { 1214 sp<IBinder> oldBinder = mTorchClientMap.valueAt(index); 1215 oldBinder->unlinkToDeath(this); 1216 } 1217 } 1218 1219 return OK; 1220} 1221 1222void CameraService::notifySystemEvent(int eventId, int arg0) { 1223 switch(eventId) { 1224 case ICameraService::USER_SWITCHED: { 1225 doUserSwitch(/*newUserId*/arg0); 1226 break; 1227 } 1228 case ICameraService::NO_EVENT: 1229 default: { 1230 ALOGW("%s: Received invalid system event from system_server: %d", __FUNCTION__, 1231 eventId); 1232 break; 1233 } 1234 } 1235} 1236 1237status_t CameraService::addListener( 1238 const sp<ICameraServiceListener>& listener) { 1239 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); 1240 1241 if (listener == 0) { 1242 ALOGE("%s: Listener must not be null", __FUNCTION__); 1243 return BAD_VALUE; 1244 } 1245 1246 Mutex::Autolock lock(mServiceLock); 1247 1248 { 1249 Mutex::Autolock lock(mStatusListenerLock); 1250 for (auto& it : mListenerList) { 1251 if (IInterface::asBinder(it) == IInterface::asBinder(listener)) { 1252 ALOGW("%s: Tried to add listener %p which was already subscribed", 1253 __FUNCTION__, listener.get()); 1254 return ALREADY_EXISTS; 1255 } 1256 } 1257 1258 mListenerList.push_back(listener); 1259 } 1260 1261 1262 /* Immediately signal current status to this listener only */ 1263 { 1264 Mutex::Autolock lock(mCameraStatesLock); 1265 for (auto& i : mCameraStates) { 1266 // TODO: Update binder to use String16 for camera IDs and remove; 1267 int id = cameraIdToInt(i.first); 1268 if (id == -1) continue; 1269 1270 listener->onStatusChanged(i.second->getStatus(), id); 1271 } 1272 } 1273 1274 /* Immediately signal current torch status to this listener only */ 1275 { 1276 Mutex::Autolock al(mTorchStatusMutex); 1277 for (size_t i = 0; i < mTorchStatusMap.size(); i++ ) { 1278 String16 id = String16(mTorchStatusMap.keyAt(i).string()); 1279 listener->onTorchStatusChanged(mTorchStatusMap.valueAt(i), id); 1280 } 1281 } 1282 1283 return OK; 1284} 1285 1286status_t CameraService::removeListener(const sp<ICameraServiceListener>& listener) { 1287 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); 1288 1289 if (listener == 0) { 1290 ALOGE("%s: Listener must not be null", __FUNCTION__); 1291 return BAD_VALUE; 1292 } 1293 1294 Mutex::Autolock lock(mServiceLock); 1295 1296 { 1297 Mutex::Autolock lock(mStatusListenerLock); 1298 for (auto it = mListenerList.begin(); it != mListenerList.end(); it++) { 1299 if (IInterface::asBinder(*it) == IInterface::asBinder(listener)) { 1300 mListenerList.erase(it); 1301 return OK; 1302 } 1303 } 1304 } 1305 1306 ALOGW("%s: Tried to remove a listener %p which was not subscribed", 1307 __FUNCTION__, listener.get()); 1308 1309 return BAD_VALUE; 1310} 1311 1312status_t CameraService::getLegacyParameters(int cameraId, /*out*/String16* parameters) { 1313 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1314 1315 if (parameters == NULL) { 1316 ALOGE("%s: parameters must not be null", __FUNCTION__); 1317 return BAD_VALUE; 1318 } 1319 1320 status_t ret = 0; 1321 1322 CameraParameters shimParams; 1323 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 1324 // Error logged by caller 1325 return ret; 1326 } 1327 1328 String8 shimParamsString8 = shimParams.flatten(); 1329 String16 shimParamsString16 = String16(shimParamsString8); 1330 1331 *parameters = shimParamsString16; 1332 1333 return OK; 1334} 1335 1336status_t CameraService::supportsCameraApi(int cameraId, int apiVersion) { 1337 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1338 1339 switch (apiVersion) { 1340 case API_VERSION_1: 1341 case API_VERSION_2: 1342 break; 1343 default: 1344 ALOGE("%s: Bad API version %d", __FUNCTION__, apiVersion); 1345 return BAD_VALUE; 1346 } 1347 1348 int facing = -1; 1349 int deviceVersion = getDeviceVersion(cameraId, &facing); 1350 1351 switch(deviceVersion) { 1352 case CAMERA_DEVICE_API_VERSION_1_0: 1353 case CAMERA_DEVICE_API_VERSION_2_0: 1354 case CAMERA_DEVICE_API_VERSION_2_1: 1355 case CAMERA_DEVICE_API_VERSION_3_0: 1356 case CAMERA_DEVICE_API_VERSION_3_1: 1357 if (apiVersion == API_VERSION_2) { 1358 ALOGV("%s: Camera id %d uses HAL prior to HAL3.2, doesn't support api2 without shim", 1359 __FUNCTION__, cameraId); 1360 return -EOPNOTSUPP; 1361 } else { // if (apiVersion == API_VERSION_1) { 1362 ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported", 1363 __FUNCTION__, cameraId); 1364 return OK; 1365 } 1366 case CAMERA_DEVICE_API_VERSION_3_2: 1367 case CAMERA_DEVICE_API_VERSION_3_3: 1368 ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly", 1369 __FUNCTION__, cameraId); 1370 return OK; 1371 case -1: 1372 ALOGE("%s: Invalid camera id %d", __FUNCTION__, cameraId); 1373 return BAD_VALUE; 1374 default: 1375 ALOGE("%s: Unknown camera device HAL version: %d", __FUNCTION__, deviceVersion); 1376 return INVALID_OPERATION; 1377 } 1378 1379 return OK; 1380} 1381 1382void CameraService::removeByClient(const BasicClient* client) { 1383 Mutex::Autolock lock(mServiceLock); 1384 for (auto& i : mActiveClientManager.getAll()) { 1385 auto clientSp = i->getValue(); 1386 if (clientSp.get() == client) { 1387 mActiveClientManager.remove(i); 1388 } 1389 } 1390} 1391 1392bool CameraService::evictClientIdByRemote(const wp<IBinder>& remote) { 1393 const int callingPid = getCallingPid(); 1394 const int servicePid = getpid(); 1395 bool ret = false; 1396 { 1397 // Acquire mServiceLock and prevent other clients from connecting 1398 std::unique_ptr<AutoConditionLock> lock = 1399 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1400 1401 1402 std::vector<sp<BasicClient>> evicted; 1403 for (auto& i : mActiveClientManager.getAll()) { 1404 auto clientSp = i->getValue(); 1405 if (clientSp.get() == nullptr) { 1406 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1407 mActiveClientManager.remove(i); 1408 continue; 1409 } 1410 if (remote == clientSp->getRemote() && (callingPid == servicePid || 1411 callingPid == clientSp->getClientPid())) { 1412 mActiveClientManager.remove(i); 1413 evicted.push_back(clientSp); 1414 1415 // Notify the client of disconnection 1416 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1417 CaptureResultExtras()); 1418 } 1419 } 1420 1421 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1422 // other clients from connecting in mServiceLockWrapper if held 1423 mServiceLock.unlock(); 1424 1425 // Do not clear caller identity, remote caller should be client proccess 1426 1427 for (auto& i : evicted) { 1428 if (i.get() != nullptr) { 1429 i->disconnect(); 1430 ret = true; 1431 } 1432 } 1433 1434 // Reacquire mServiceLock 1435 mServiceLock.lock(); 1436 1437 } // lock is destroyed, allow further connect calls 1438 1439 return ret; 1440} 1441 1442 1443std::shared_ptr<CameraService::CameraState> CameraService::getCameraState( 1444 const String8& cameraId) const { 1445 std::shared_ptr<CameraState> state; 1446 { 1447 Mutex::Autolock lock(mCameraStatesLock); 1448 auto iter = mCameraStates.find(cameraId); 1449 if (iter != mCameraStates.end()) { 1450 state = iter->second; 1451 } 1452 } 1453 return state; 1454} 1455 1456sp<CameraService::BasicClient> CameraService::removeClientLocked(const String8& cameraId) { 1457 // Remove from active clients list 1458 auto clientDescriptorPtr = mActiveClientManager.remove(cameraId); 1459 if (clientDescriptorPtr == nullptr) { 1460 ALOGW("%s: Could not evict client, no client for camera ID %s", __FUNCTION__, 1461 cameraId.string()); 1462 return sp<BasicClient>{nullptr}; 1463 } 1464 1465 return clientDescriptorPtr->getValue(); 1466} 1467 1468void CameraService::doUserSwitch(int newUserId) { 1469 // Acquire mServiceLock and prevent other clients from connecting 1470 std::unique_ptr<AutoConditionLock> lock = 1471 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1472 1473 if (newUserId <= 0) { 1474 ALOGW("%s: Bad user ID %d given during user switch, resetting to default.", __FUNCTION__, 1475 newUserId); 1476 newUserId = DEFAULT_LAST_USER_ID; 1477 } 1478 1479 logUserSwitch(mLastUserId, newUserId); 1480 1481 mLastUserId = newUserId; 1482 1483 // Current user has switched, evict all current clients. 1484 std::vector<sp<BasicClient>> evicted; 1485 for (auto& i : mActiveClientManager.getAll()) { 1486 auto clientSp = i->getValue(); 1487 1488 if (clientSp.get() == nullptr) { 1489 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1490 continue; 1491 } 1492 1493 evicted.push_back(clientSp); 1494 1495 String8 curTime = getFormattedCurrentTime(); 1496 1497 ALOGE("Evicting conflicting client for camera ID %s due to user change", 1498 i->getKey().string()); 1499 1500 // Log the clients evicted 1501 logEvent(String8::format("EVICT device %s client held by package %s (PID %" 1502 PRId32 ", priority %" PRId32 ")\n - Evicted due to user switch.", 1503 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1504 i->getOwnerId(), i->getPriority())); 1505 1506 } 1507 1508 // Do not hold mServiceLock while disconnecting clients, but retain the condition 1509 // blocking other clients from connecting in mServiceLockWrapper if held. 1510 mServiceLock.unlock(); 1511 1512 // Clear caller identity temporarily so client disconnect PID checks work correctly 1513 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1514 1515 for (auto& i : evicted) { 1516 i->disconnect(); 1517 } 1518 1519 IPCThreadState::self()->restoreCallingIdentity(token); 1520 1521 // Reacquire mServiceLock 1522 mServiceLock.lock(); 1523} 1524 1525void CameraService::logEvent(const char* event) { 1526 String8 curTime = getFormattedCurrentTime(); 1527 Mutex::Autolock l(mLogLock); 1528 mEventLog.add(String8::format("%s : %s", curTime.string(), event)); 1529} 1530 1531void CameraService::logDisconnected(const char* cameraId, int clientPid, 1532 const char* clientPackage) { 1533 // Log the clients evicted 1534 logEvent(String8::format("DISCONNECT device %s client for package %s (PID %d)", cameraId, 1535 clientPackage, clientPid)); 1536} 1537 1538void CameraService::logConnected(const char* cameraId, int clientPid, 1539 const char* clientPackage) { 1540 // Log the clients evicted 1541 logEvent(String8::format("CONNECT device %s client for package %s (PID %d)", cameraId, 1542 clientPackage, clientPid)); 1543} 1544 1545void CameraService::logRejected(const char* cameraId, int clientPid, 1546 const char* clientPackage, const char* reason) { 1547 // Log the client rejected 1548 logEvent(String8::format("REJECT device %s client for package %s (PID %d), reason: (%s)", 1549 cameraId, clientPackage, clientPid, reason)); 1550} 1551 1552void CameraService::logUserSwitch(int oldUserId, int newUserId) { 1553 // Log the new and old users 1554 logEvent(String8::format("USER_SWITCH from old user: %d , to new user: %d", oldUserId, 1555 newUserId)); 1556} 1557 1558void CameraService::logDeviceRemoved(const char* cameraId, const char* reason) { 1559 // Log the device removal 1560 logEvent(String8::format("REMOVE device %s, reason: (%s)", cameraId, reason)); 1561} 1562 1563void CameraService::logDeviceAdded(const char* cameraId, const char* reason) { 1564 // Log the device removal 1565 logEvent(String8::format("ADD device %s, reason: (%s)", cameraId, reason)); 1566} 1567 1568void CameraService::logClientDied(int clientPid, const char* reason) { 1569 // Log the device removal 1570 logEvent(String8::format("DIED client(s) with PID %d, reason: (%s)", clientPid, reason)); 1571} 1572 1573void CameraService::logServiceError(const char* msg, int errorCode) { 1574 String8 curTime = getFormattedCurrentTime(); 1575 logEvent(String8::format("SERVICE ERROR: %s : %d (%s)", msg, errorCode, strerror(errorCode))); 1576} 1577 1578status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply, 1579 uint32_t flags) { 1580 1581 const int pid = getCallingPid(); 1582 const int selfPid = getpid(); 1583 1584 // Permission checks 1585 switch (code) { 1586 case BnCameraService::CONNECT: 1587 case BnCameraService::CONNECT_DEVICE: 1588 case BnCameraService::CONNECT_LEGACY: { 1589 if (pid != selfPid) { 1590 // we're called from a different process, do the real check 1591 if (!checkCallingPermission( 1592 String16("android.permission.CAMERA"))) { 1593 const int uid = getCallingUid(); 1594 ALOGE("Permission Denial: " 1595 "can't use the camera pid=%d, uid=%d", pid, uid); 1596 return PERMISSION_DENIED; 1597 } 1598 } 1599 break; 1600 } 1601 case BnCameraService::NOTIFY_SYSTEM_EVENT: { 1602 if (pid != selfPid) { 1603 // Ensure we're being called by system_server, or similar process with 1604 // permissions to notify the camera service about system events 1605 if (!checkCallingPermission( 1606 String16("android.permission.CAMERA_SEND_SYSTEM_EVENTS"))) { 1607 const int uid = getCallingUid(); 1608 ALOGE("Permission Denial: cannot send updates to camera service about system" 1609 " events from pid=%d, uid=%d", pid, uid); 1610 return PERMISSION_DENIED; 1611 } 1612 } 1613 break; 1614 } 1615 } 1616 1617 return BnCameraService::onTransact(code, data, reply, flags); 1618} 1619 1620// We share the media players for shutter and recording sound for all clients. 1621// A reference count is kept to determine when we will actually release the 1622// media players. 1623 1624MediaPlayer* CameraService::newMediaPlayer(const char *file) { 1625 MediaPlayer* mp = new MediaPlayer(); 1626 if (mp->setDataSource(NULL /* httpService */, file, NULL) == NO_ERROR) { 1627 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 1628 mp->prepare(); 1629 } else { 1630 ALOGE("Failed to load CameraService sounds: %s", file); 1631 return NULL; 1632 } 1633 return mp; 1634} 1635 1636void CameraService::loadSound() { 1637 Mutex::Autolock lock(mSoundLock); 1638 LOG1("CameraService::loadSound ref=%d", mSoundRef); 1639 if (mSoundRef++) return; 1640 1641 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 1642 mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 1643} 1644 1645void CameraService::releaseSound() { 1646 Mutex::Autolock lock(mSoundLock); 1647 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 1648 if (--mSoundRef) return; 1649 1650 for (int i = 0; i < NUM_SOUNDS; i++) { 1651 if (mSoundPlayer[i] != 0) { 1652 mSoundPlayer[i]->disconnect(); 1653 mSoundPlayer[i].clear(); 1654 } 1655 } 1656} 1657 1658void CameraService::playSound(sound_kind kind) { 1659 LOG1("playSound(%d)", kind); 1660 Mutex::Autolock lock(mSoundLock); 1661 sp<MediaPlayer> player = mSoundPlayer[kind]; 1662 if (player != 0) { 1663 player->seekTo(0); 1664 player->start(); 1665 } 1666} 1667 1668// ---------------------------------------------------------------------------- 1669 1670CameraService::Client::Client(const sp<CameraService>& cameraService, 1671 const sp<ICameraClient>& cameraClient, 1672 const String16& clientPackageName, 1673 int cameraId, int cameraFacing, 1674 int clientPid, uid_t clientUid, 1675 int servicePid) : 1676 CameraService::BasicClient(cameraService, 1677 IInterface::asBinder(cameraClient), 1678 clientPackageName, 1679 cameraId, cameraFacing, 1680 clientPid, clientUid, 1681 servicePid) 1682{ 1683 int callingPid = getCallingPid(); 1684 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 1685 1686 mRemoteCallback = cameraClient; 1687 1688 cameraService->loadSound(); 1689 1690 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 1691} 1692 1693// tear down the client 1694CameraService::Client::~Client() { 1695 ALOGV("~Client"); 1696 mDestructionStarted = true; 1697 1698 mCameraService->releaseSound(); 1699 // unconditionally disconnect. function is idempotent 1700 Client::disconnect(); 1701} 1702 1703CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 1704 const sp<IBinder>& remoteCallback, 1705 const String16& clientPackageName, 1706 int cameraId, int cameraFacing, 1707 int clientPid, uid_t clientUid, 1708 int servicePid): 1709 mClientPackageName(clientPackageName), mDisconnected(false) 1710{ 1711 mCameraService = cameraService; 1712 mRemoteBinder = remoteCallback; 1713 mCameraId = cameraId; 1714 mCameraFacing = cameraFacing; 1715 mClientPid = clientPid; 1716 mClientUid = clientUid; 1717 mServicePid = servicePid; 1718 mOpsActive = false; 1719 mDestructionStarted = false; 1720} 1721 1722CameraService::BasicClient::~BasicClient() { 1723 ALOGV("~BasicClient"); 1724 mDestructionStarted = true; 1725} 1726 1727void CameraService::BasicClient::disconnect() { 1728 if (mDisconnected) { 1729 ALOGE("%s: Disconnect called on already disconnected client for device %d", __FUNCTION__, 1730 mCameraId); 1731 return; 1732 } 1733 mDisconnected = true;; 1734 1735 mCameraService->removeByClient(this); 1736 mCameraService->logDisconnected(String8::format("%d", mCameraId), mClientPid, 1737 String8(mClientPackageName)); 1738 1739 sp<IBinder> remote = getRemote(); 1740 if (remote != nullptr) { 1741 remote->unlinkToDeath(mCameraService); 1742 } 1743 1744 finishCameraOps(); 1745 ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid); 1746 1747 // client shouldn't be able to call into us anymore 1748 mClientPid = 0; 1749} 1750 1751String16 CameraService::BasicClient::getPackageName() const { 1752 return mClientPackageName; 1753} 1754 1755 1756int CameraService::BasicClient::getClientPid() const { 1757 return mClientPid; 1758} 1759 1760bool CameraService::BasicClient::canCastToApiClient(apiLevel level) const { 1761 // Defaults to API2. 1762 return level == API_2; 1763} 1764 1765status_t CameraService::BasicClient::startCameraOps() { 1766 int32_t res; 1767 // Notify app ops that the camera is not available 1768 mOpsCallback = new OpsCallback(this); 1769 1770 { 1771 ALOGV("%s: Start camera ops, package name = %s, client UID = %d", 1772 __FUNCTION__, String8(mClientPackageName).string(), mClientUid); 1773 } 1774 1775 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 1776 mClientPackageName, mOpsCallback); 1777 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 1778 mClientUid, mClientPackageName); 1779 1780 if (res != AppOpsManager::MODE_ALLOWED) { 1781 ALOGI("Camera %d: Access for \"%s\" has been revoked", 1782 mCameraId, String8(mClientPackageName).string()); 1783 return PERMISSION_DENIED; 1784 } 1785 1786 mOpsActive = true; 1787 1788 // Transition device availability listeners from PRESENT -> NOT_AVAILABLE 1789 mCameraService->updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 1790 String8::format("%d", mCameraId)); 1791 1792 return OK; 1793} 1794 1795status_t CameraService::BasicClient::finishCameraOps() { 1796 // Check if startCameraOps succeeded, and if so, finish the camera op 1797 if (mOpsActive) { 1798 // Notify app ops that the camera is available again 1799 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 1800 mClientPackageName); 1801 mOpsActive = false; 1802 1803 auto rejected = {ICameraServiceListener::STATUS_NOT_PRESENT, 1804 ICameraServiceListener::STATUS_ENUMERATING}; 1805 1806 // Transition to PRESENT if the camera is not in either of the rejected states 1807 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, 1808 String8::format("%d", mCameraId), rejected); 1809 1810 // Notify flashlight that a camera device is closed. 1811 mCameraService->mFlashlight->deviceClosed( 1812 String8::format("%d", mCameraId)); 1813 } 1814 // Always stop watching, even if no camera op is active 1815 if (mOpsCallback != NULL) { 1816 mAppOpsManager.stopWatchingMode(mOpsCallback); 1817 } 1818 mOpsCallback.clear(); 1819 1820 return OK; 1821} 1822 1823void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 1824 String8 name(packageName); 1825 String8 myName(mClientPackageName); 1826 1827 if (op != AppOpsManager::OP_CAMERA) { 1828 ALOGW("Unexpected app ops notification received: %d", op); 1829 return; 1830 } 1831 1832 int32_t res; 1833 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 1834 mClientUid, mClientPackageName); 1835 ALOGV("checkOp returns: %d, %s ", res, 1836 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 1837 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 1838 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 1839 "UNKNOWN"); 1840 1841 if (res != AppOpsManager::MODE_ALLOWED) { 1842 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 1843 myName.string()); 1844 // Reset the client PID to allow server-initiated disconnect, 1845 // and to prevent further calls by client. 1846 mClientPid = getCallingPid(); 1847 CaptureResultExtras resultExtras; // a dummy result (invalid) 1848 notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE, resultExtras); 1849 disconnect(); 1850 } 1851} 1852 1853// ---------------------------------------------------------------------------- 1854 1855// Provide client strong pointer for callbacks. 1856sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) { 1857 String8 cameraId = String8::format("%d", (int)(intptr_t) user); 1858 auto clientDescriptor = gCameraService->mActiveClientManager.get(cameraId); 1859 if (clientDescriptor != nullptr) { 1860 return sp<Client>{ 1861 static_cast<Client*>(clientDescriptor->getValue().get())}; 1862 } 1863 return sp<Client>{nullptr}; 1864} 1865 1866void CameraService::Client::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 1867 const CaptureResultExtras& resultExtras) { 1868 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 1869} 1870 1871// NOTE: function is idempotent 1872void CameraService::Client::disconnect() { 1873 ALOGV("Client::disconnect"); 1874 BasicClient::disconnect(); 1875} 1876 1877bool CameraService::Client::canCastToApiClient(apiLevel level) const { 1878 return level == API_1; 1879} 1880 1881CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 1882 mClient(client) { 1883} 1884 1885void CameraService::Client::OpsCallback::opChanged(int32_t op, 1886 const String16& packageName) { 1887 sp<BasicClient> client = mClient.promote(); 1888 if (client != NULL) { 1889 client->opChanged(op, packageName); 1890 } 1891} 1892 1893// ---------------------------------------------------------------------------- 1894// CameraState 1895// ---------------------------------------------------------------------------- 1896 1897CameraService::CameraState::CameraState(const String8& id, int cost, 1898 const std::set<String8>& conflicting) : mId(id), 1899 mStatus(ICameraServiceListener::STATUS_PRESENT), mCost(cost), mConflicting(conflicting) {} 1900 1901CameraService::CameraState::~CameraState() {} 1902 1903ICameraServiceListener::Status CameraService::CameraState::getStatus() const { 1904 Mutex::Autolock lock(mStatusLock); 1905 return mStatus; 1906} 1907 1908CameraParameters CameraService::CameraState::getShimParams() const { 1909 return mShimParams; 1910} 1911 1912void CameraService::CameraState::setShimParams(const CameraParameters& params) { 1913 mShimParams = params; 1914} 1915 1916int CameraService::CameraState::getCost() const { 1917 return mCost; 1918} 1919 1920std::set<String8> CameraService::CameraState::getConflicting() const { 1921 return mConflicting; 1922} 1923 1924String8 CameraService::CameraState::getId() const { 1925 return mId; 1926} 1927 1928// ---------------------------------------------------------------------------- 1929// CameraClientManager 1930// ---------------------------------------------------------------------------- 1931 1932CameraService::CameraClientManager::~CameraClientManager() {} 1933 1934sp<CameraService::BasicClient> CameraService::CameraClientManager::getCameraClient( 1935 const String8& id) const { 1936 auto descriptor = get(id); 1937 if (descriptor == nullptr) { 1938 return sp<BasicClient>{nullptr}; 1939 } 1940 return descriptor->getValue(); 1941} 1942 1943String8 CameraService::CameraClientManager::toString() const { 1944 auto all = getAll(); 1945 String8 ret("["); 1946 bool hasAny = false; 1947 for (auto& i : all) { 1948 hasAny = true; 1949 String8 key = i->getKey(); 1950 int32_t cost = i->getCost(); 1951 int32_t pid = i->getOwnerId(); 1952 int32_t priority = i->getPriority(); 1953 auto conflicting = i->getConflicting(); 1954 auto clientSp = i->getValue(); 1955 String8 packageName; 1956 if (clientSp.get() != nullptr) { 1957 packageName = String8{clientSp->getPackageName()}; 1958 } 1959 ret.appendFormat("\n(Camera ID: %s, Cost: %" PRId32 ", PID: %" PRId32 ", Priority: %" 1960 PRId32 ", ", key.string(), cost, pid, priority); 1961 1962 if (packageName.size() != 0) { 1963 ret.appendFormat("Client Package Name: %s", packageName.string()); 1964 } 1965 1966 ret.append(", Conflicting Client Devices: {"); 1967 for (auto& j : conflicting) { 1968 ret.appendFormat("%s, ", j.string()); 1969 } 1970 ret.append("})"); 1971 } 1972 if (hasAny) ret.append("\n"); 1973 ret.append("]\n"); 1974 return ret; 1975} 1976 1977CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 1978 const String8& key, const sp<BasicClient>& value, int32_t cost, 1979 const std::set<String8>& conflictingKeys, int32_t priority, int32_t ownerId) { 1980 1981 return std::make_shared<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>( 1982 key, value, cost, conflictingKeys, priority, ownerId); 1983} 1984 1985CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 1986 const sp<BasicClient>& value, const CameraService::DescriptorPtr& partial) { 1987 return makeClientDescriptor(partial->getKey(), value, partial->getCost(), 1988 partial->getConflicting(), partial->getPriority(), partial->getOwnerId()); 1989} 1990 1991// ---------------------------------------------------------------------------- 1992 1993static const int kDumpLockRetries = 50; 1994static const int kDumpLockSleep = 60000; 1995 1996static bool tryLock(Mutex& mutex) 1997{ 1998 bool locked = false; 1999 for (int i = 0; i < kDumpLockRetries; ++i) { 2000 if (mutex.tryLock() == NO_ERROR) { 2001 locked = true; 2002 break; 2003 } 2004 usleep(kDumpLockSleep); 2005 } 2006 return locked; 2007} 2008 2009status_t CameraService::dump(int fd, const Vector<String16>& args) { 2010 String8 result("Dump of the Camera Service:\n"); 2011 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 2012 result.appendFormat("Permission Denial: " 2013 "can't dump CameraService from pid=%d, uid=%d\n", 2014 getCallingPid(), 2015 getCallingUid()); 2016 write(fd, result.string(), result.size()); 2017 } else { 2018 bool locked = tryLock(mServiceLock); 2019 // failed to lock - CameraService is probably deadlocked 2020 if (!locked) { 2021 result.append("CameraService may be deadlocked\n"); 2022 write(fd, result.string(), result.size()); 2023 } 2024 2025 bool hasClient = false; 2026 if (!mModule) { 2027 result = String8::format("No camera module available!\n"); 2028 write(fd, result.string(), result.size()); 2029 2030 // Dump event log for error information 2031 dumpEventLog(fd); 2032 2033 if (locked) mServiceLock.unlock(); 2034 return NO_ERROR; 2035 } 2036 2037 result = String8::format("Camera module HAL API version: 0x%x\n", mModule->getHalApiVersion()); 2038 result.appendFormat("Camera module API version: 0x%x\n", mModule->getModuleApiVersion()); 2039 result.appendFormat("Camera module name: %s\n", mModule->getModuleName()); 2040 result.appendFormat("Camera module author: %s\n", mModule->getModuleAuthor()); 2041 result.appendFormat("Number of camera devices: %d\n", mNumberOfCameras); 2042 String8 activeClientString = mActiveClientManager.toString(); 2043 result.appendFormat("Active Camera Clients:\n%s", activeClientString.string()); 2044 2045 sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 2046 if (desc == NULL) { 2047 result.appendFormat("Vendor tags left unimplemented.\n"); 2048 } else { 2049 result.appendFormat("Vendor tag definitions:\n"); 2050 } 2051 2052 write(fd, result.string(), result.size()); 2053 2054 if (desc != NULL) { 2055 desc->dump(fd, /*verbosity*/2, /*indentation*/4); 2056 } 2057 2058 dumpEventLog(fd); 2059 2060 bool stateLocked = tryLock(mCameraStatesLock); 2061 if (!stateLocked) { 2062 result = String8::format("CameraStates in use, may be deadlocked\n"); 2063 write(fd, result.string(), result.size()); 2064 } 2065 2066 for (auto& state : mCameraStates) { 2067 String8 cameraId = state.first; 2068 result = String8::format("Camera %s information:\n", cameraId.string()); 2069 camera_info info; 2070 2071 // TODO: Change getCameraInfo + HAL to use String cameraIds 2072 status_t rc = mModule->getCameraInfo(cameraIdToInt(cameraId), &info); 2073 if (rc != OK) { 2074 result.appendFormat(" Error reading static information!\n"); 2075 write(fd, result.string(), result.size()); 2076 } else { 2077 result.appendFormat(" Facing: %s\n", 2078 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 2079 result.appendFormat(" Orientation: %d\n", info.orientation); 2080 int deviceVersion; 2081 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0) { 2082 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 2083 } else { 2084 deviceVersion = info.device_version; 2085 } 2086 2087 auto conflicting = state.second->getConflicting(); 2088 result.appendFormat(" Resource Cost: %d\n", state.second->getCost()); 2089 result.appendFormat(" Conflicting Devices:"); 2090 for (auto& id : conflicting) { 2091 result.appendFormat(" %s", cameraId.string()); 2092 } 2093 if (conflicting.size() == 0) { 2094 result.appendFormat(" NONE"); 2095 } 2096 result.appendFormat("\n"); 2097 2098 result.appendFormat(" Device version: %#x\n", deviceVersion); 2099 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { 2100 result.appendFormat(" Device static metadata:\n"); 2101 write(fd, result.string(), result.size()); 2102 dump_indented_camera_metadata(info.static_camera_characteristics, 2103 fd, /*verbosity*/2, /*indentation*/4); 2104 } else { 2105 write(fd, result.string(), result.size()); 2106 } 2107 2108 CameraParameters p = state.second->getShimParams(); 2109 if (!p.isEmpty()) { 2110 result = String8::format(" Camera1 API shim is using parameters:\n "); 2111 write(fd, result.string(), result.size()); 2112 p.dump(fd, args); 2113 } 2114 } 2115 2116 auto clientDescriptor = mActiveClientManager.get(cameraId); 2117 if (clientDescriptor == nullptr) { 2118 result = String8::format(" Device %s is closed, no client instance\n", 2119 cameraId.string()); 2120 write(fd, result.string(), result.size()); 2121 continue; 2122 } 2123 hasClient = true; 2124 result = String8::format(" Device %s is open. Client instance dump:\n\n", 2125 cameraId.string()); 2126 result.appendFormat("Client priority level: %d\n", clientDescriptor->getPriority()); 2127 result.appendFormat("Client PID: %d\n", clientDescriptor->getOwnerId()); 2128 2129 auto client = clientDescriptor->getValue(); 2130 result.appendFormat("Client package: %s\n", 2131 String8(client->getPackageName()).string()); 2132 write(fd, result.string(), result.size()); 2133 2134 client->dump(fd, args); 2135 } 2136 2137 if (stateLocked) mCameraStatesLock.unlock(); 2138 2139 if (!hasClient) { 2140 result = String8::format("\nNo active camera clients yet.\n"); 2141 write(fd, result.string(), result.size()); 2142 } 2143 2144 if (locked) mServiceLock.unlock(); 2145 2146 // Dump camera traces if there were any 2147 write(fd, "\n", 1); 2148 camera3::CameraTraces::dump(fd, args); 2149 2150 // change logging level 2151 int n = args.size(); 2152 for (int i = 0; i + 1 < n; i++) { 2153 String16 verboseOption("-v"); 2154 if (args[i] == verboseOption) { 2155 String8 levelStr(args[i+1]); 2156 int level = atoi(levelStr.string()); 2157 result = String8::format("\nSetting log level to %d.\n", level); 2158 setLogLevel(level); 2159 write(fd, result.string(), result.size()); 2160 } 2161 } 2162 } 2163 return NO_ERROR; 2164} 2165 2166void CameraService::dumpEventLog(int fd) { 2167 String8 result = String8("\nPrior client events (most recent at top):\n"); 2168 2169 Mutex::Autolock l(mLogLock); 2170 for (const auto& msg : mEventLog) { 2171 result.appendFormat(" %s\n", msg.string()); 2172 } 2173 2174 if (mEventLog.size() == DEFAULT_EVENT_LOG_LENGTH) { 2175 result.append(" ...\n"); 2176 } else if (mEventLog.size() == 0) { 2177 result.append(" [no events yet]\n"); 2178 } 2179 result.append("\n"); 2180 2181 write(fd, result.string(), result.size()); 2182} 2183 2184void CameraService::handleTorchClientBinderDied(const wp<IBinder> &who) { 2185 Mutex::Autolock al(mTorchClientMapMutex); 2186 for (size_t i = 0; i < mTorchClientMap.size(); i++) { 2187 if (mTorchClientMap[i] == who) { 2188 // turn off the torch mode that was turned on by dead client 2189 String8 cameraId = mTorchClientMap.keyAt(i); 2190 status_t res = mFlashlight->setTorchMode(cameraId, false); 2191 if (res) { 2192 ALOGE("%s: torch client died but couldn't turn off torch: " 2193 "%s (%d)", __FUNCTION__, strerror(-res), res); 2194 return; 2195 } 2196 mTorchClientMap.removeItemsAt(i); 2197 break; 2198 } 2199 } 2200} 2201 2202/*virtual*/void CameraService::binderDied(const wp<IBinder> &who) { 2203 2204 /** 2205 * While tempting to promote the wp<IBinder> into a sp, it's actually not supported by the 2206 * binder driver 2207 */ 2208 2209 logClientDied(getCallingPid(), String8("Binder died unexpectedly")); 2210 2211 // check torch client 2212 handleTorchClientBinderDied(who); 2213 2214 // check camera device client 2215 if(!evictClientIdByRemote(who)) { 2216 ALOGV("%s: Java client's binder death already cleaned up (normal case)", __FUNCTION__); 2217 return; 2218 } 2219 2220 ALOGE("%s: Java client's binder died, removing it from the list of active clients", 2221 __FUNCTION__); 2222} 2223 2224void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId) { 2225 updateStatus(status, cameraId, {}); 2226} 2227 2228void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId, 2229 std::initializer_list<ICameraServiceListener::Status> rejectSourceStates) { 2230 // Do not lock mServiceLock here or can get into a deadlock from 2231 // connect() -> disconnect -> updateStatus 2232 2233 auto state = getCameraState(cameraId); 2234 2235 if (state == nullptr) { 2236 ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__, 2237 cameraId.string()); 2238 return; 2239 } 2240 2241 // Update the status for this camera state, then send the onStatusChangedCallbacks to each 2242 // of the listeners with both the mStatusStatus and mStatusListenerLock held 2243 state->updateStatus(status, cameraId, rejectSourceStates, [this] 2244 (const String8& cameraId, ICameraServiceListener::Status status) { 2245 2246 if (status != ICameraServiceListener::STATUS_ENUMERATING) { 2247 // Update torch status if it has a flash unit. 2248 Mutex::Autolock al(mTorchStatusMutex); 2249 ICameraServiceListener::TorchStatus torchStatus; 2250 if (getTorchStatusLocked(cameraId, &torchStatus) != 2251 NAME_NOT_FOUND) { 2252 ICameraServiceListener::TorchStatus newTorchStatus = 2253 status == ICameraServiceListener::STATUS_PRESENT ? 2254 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF : 2255 ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 2256 if (torchStatus != newTorchStatus) { 2257 onTorchStatusChangedLocked(cameraId, newTorchStatus); 2258 } 2259 } 2260 } 2261 2262 Mutex::Autolock lock(mStatusListenerLock); 2263 2264 for (auto& listener : mListenerList) { 2265 // TODO: Refactor status listeners to use strings for Camera IDs and remove this. 2266 int id = cameraIdToInt(cameraId); 2267 if (id != -1) listener->onStatusChanged(status, id); 2268 } 2269 }); 2270} 2271 2272status_t CameraService::getTorchStatusLocked( 2273 const String8& cameraId, 2274 ICameraServiceListener::TorchStatus *status) const { 2275 if (!status) { 2276 return BAD_VALUE; 2277 } 2278 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2279 if (index == NAME_NOT_FOUND) { 2280 // invalid camera ID or the camera doesn't have a flash unit 2281 return NAME_NOT_FOUND; 2282 } 2283 2284 *status = mTorchStatusMap.valueAt(index); 2285 return OK; 2286} 2287 2288status_t CameraService::setTorchStatusLocked(const String8& cameraId, 2289 ICameraServiceListener::TorchStatus status) { 2290 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2291 if (index == NAME_NOT_FOUND) { 2292 return BAD_VALUE; 2293 } 2294 ICameraServiceListener::TorchStatus& item = 2295 mTorchStatusMap.editValueAt(index); 2296 item = status; 2297 2298 return OK; 2299} 2300 2301}; // namespace android 2302