CameraService.cpp revision 022f0cb0c6f135edde4ebe84859c685933ee895e
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), mAllowedUsers(), 126 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 if (procState < 0) { 523 ALOGE("%s: Received invalid process state %d from ActivityManagerService!", __FUNCTION__, 524 procState); 525 return -1; 526 } 527 return INT_MAX - procState; 528} 529 530status_t CameraService::getCameraVendorTagDescriptor(/*out*/sp<VendorTagDescriptor>& desc) { 531 if (!mModule) { 532 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 533 return -ENODEV; 534 } 535 536 desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 537 return OK; 538} 539 540int CameraService::getDeviceVersion(int cameraId, int* facing) { 541 struct camera_info info; 542 if (mModule->getCameraInfo(cameraId, &info) != OK) { 543 return -1; 544 } 545 546 int deviceVersion; 547 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) { 548 deviceVersion = info.device_version; 549 } else { 550 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 551 } 552 553 if (facing) { 554 *facing = info.facing; 555 } 556 557 return deviceVersion; 558} 559 560status_t CameraService::filterGetInfoErrorCode(status_t err) { 561 switch(err) { 562 case NO_ERROR: 563 case -EINVAL: 564 return err; 565 default: 566 break; 567 } 568 return -ENODEV; 569} 570 571bool CameraService::setUpVendorTags() { 572 vendor_tag_ops_t vOps = vendor_tag_ops_t(); 573 574 // Check if vendor operations have been implemented 575 if (!mModule->isVendorTagDefined()) { 576 ALOGI("%s: No vendor tags defined for this device.", __FUNCTION__); 577 return false; 578 } 579 580 ATRACE_BEGIN("camera3->get_metadata_vendor_tag_ops"); 581 mModule->getVendorTagOps(&vOps); 582 ATRACE_END(); 583 584 // Ensure all vendor operations are present 585 if (vOps.get_tag_count == NULL || vOps.get_all_tags == NULL || 586 vOps.get_section_name == NULL || vOps.get_tag_name == NULL || 587 vOps.get_tag_type == NULL) { 588 ALOGE("%s: Vendor tag operations not fully defined. Ignoring definitions." 589 , __FUNCTION__); 590 return false; 591 } 592 593 // Read all vendor tag definitions into a descriptor 594 sp<VendorTagDescriptor> desc; 595 status_t res; 596 if ((res = VendorTagDescriptor::createDescriptorFromOps(&vOps, /*out*/desc)) 597 != OK) { 598 ALOGE("%s: Could not generate descriptor from vendor tag operations," 599 "received error %s (%d). Camera clients will not be able to use" 600 "vendor tags", __FUNCTION__, strerror(res), res); 601 return false; 602 } 603 604 // Set the global descriptor to use with camera metadata 605 VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc); 606 return true; 607} 608 609status_t CameraService::makeClient(const sp<CameraService>& cameraService, 610 const sp<IInterface>& cameraCb, const String16& packageName, const String8& cameraId, 611 int facing, int clientPid, uid_t clientUid, int servicePid, bool legacyMode, 612 int halVersion, int deviceVersion, apiLevel effectiveApiLevel, 613 /*out*/sp<BasicClient>* client) { 614 615 // TODO: Update CameraClients + HAL interface to use strings for Camera IDs 616 int id = cameraIdToInt(cameraId); 617 if (id == -1) { 618 ALOGE("%s: Invalid camera ID %s, cannot convert to integer.", __FUNCTION__, 619 cameraId.string()); 620 return BAD_VALUE; 621 } 622 623 if (halVersion < 0 || halVersion == deviceVersion) { 624 // Default path: HAL version is unspecified by caller, create CameraClient 625 // based on device version reported by the HAL. 626 switch(deviceVersion) { 627 case CAMERA_DEVICE_API_VERSION_1_0: 628 if (effectiveApiLevel == API_1) { // Camera1 API route 629 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 630 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 631 clientPid, clientUid, getpid(), legacyMode); 632 } else { // Camera2 API route 633 ALOGW("Camera using old HAL version: %d", deviceVersion); 634 return -EOPNOTSUPP; 635 } 636 break; 637 case CAMERA_DEVICE_API_VERSION_2_0: 638 case CAMERA_DEVICE_API_VERSION_2_1: 639 case CAMERA_DEVICE_API_VERSION_3_0: 640 case CAMERA_DEVICE_API_VERSION_3_1: 641 case CAMERA_DEVICE_API_VERSION_3_2: 642 case CAMERA_DEVICE_API_VERSION_3_3: 643 if (effectiveApiLevel == API_1) { // Camera1 API route 644 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 645 *client = new Camera2Client(cameraService, tmp, packageName, id, facing, 646 clientPid, clientUid, servicePid, legacyMode); 647 } else { // Camera2 API route 648 sp<ICameraDeviceCallbacks> tmp = 649 static_cast<ICameraDeviceCallbacks*>(cameraCb.get()); 650 *client = new CameraDeviceClient(cameraService, tmp, packageName, id, 651 facing, clientPid, clientUid, servicePid); 652 } 653 break; 654 default: 655 // Should not be reachable 656 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 657 return INVALID_OPERATION; 658 } 659 } else { 660 // A particular HAL version is requested by caller. Create CameraClient 661 // based on the requested HAL version. 662 if (deviceVersion > CAMERA_DEVICE_API_VERSION_1_0 && 663 halVersion == CAMERA_DEVICE_API_VERSION_1_0) { 664 // Only support higher HAL version device opened as HAL1.0 device. 665 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 666 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 667 clientPid, clientUid, servicePid, legacyMode); 668 } else { 669 // Other combinations (e.g. HAL3.x open as HAL2.x) are not supported yet. 670 ALOGE("Invalid camera HAL version %x: HAL %x device can only be" 671 " opened as HAL %x device", halVersion, deviceVersion, 672 CAMERA_DEVICE_API_VERSION_1_0); 673 return INVALID_OPERATION; 674 } 675 } 676 return NO_ERROR; 677} 678 679String8 CameraService::toString(std::set<userid_t> intSet) { 680 String8 s(""); 681 bool first = true; 682 for (userid_t i : intSet) { 683 if (first) { 684 s.appendFormat("%d", i); 685 first = false; 686 } else { 687 s.appendFormat(", %d", i); 688 } 689 } 690 return s; 691} 692 693status_t CameraService::initializeShimMetadata(int cameraId) { 694 int uid = getCallingUid(); 695 696 String16 internalPackageName("media"); 697 String8 id = String8::format("%d", cameraId); 698 status_t ret = NO_ERROR; 699 sp<Client> tmp = nullptr; 700 if ((ret = connectHelper<ICameraClient,Client>(sp<ICameraClient>{nullptr}, id, 701 static_cast<int>(CAMERA_HAL_API_VERSION_UNSPECIFIED), internalPackageName, uid, API_1, 702 false, true, tmp)) != NO_ERROR) { 703 ALOGE("%s: Error %d (%s) initializing shim metadata.", __FUNCTION__, ret, strerror(ret)); 704 return ret; 705 } 706 return NO_ERROR; 707} 708 709status_t CameraService::getLegacyParametersLazy(int cameraId, 710 /*out*/ 711 CameraParameters* parameters) { 712 713 ALOGV("%s: for cameraId: %d", __FUNCTION__, cameraId); 714 715 status_t ret = 0; 716 717 if (parameters == NULL) { 718 ALOGE("%s: parameters must not be null", __FUNCTION__); 719 return BAD_VALUE; 720 } 721 722 String8 id = String8::format("%d", cameraId); 723 724 // Check if we already have parameters 725 { 726 // Scope for service lock 727 Mutex::Autolock lock(mServiceLock); 728 auto cameraState = getCameraState(id); 729 if (cameraState == nullptr) { 730 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 731 return BAD_VALUE; 732 } 733 CameraParameters p = cameraState->getShimParams(); 734 if (!p.isEmpty()) { 735 *parameters = p; 736 return NO_ERROR; 737 } 738 } 739 740 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 741 ret = initializeShimMetadata(cameraId); 742 IPCThreadState::self()->restoreCallingIdentity(token); 743 if (ret != NO_ERROR) { 744 // Error already logged by callee 745 return ret; 746 } 747 748 // Check for parameters again 749 { 750 // Scope for service lock 751 Mutex::Autolock lock(mServiceLock); 752 auto cameraState = getCameraState(id); 753 if (cameraState == nullptr) { 754 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 755 return BAD_VALUE; 756 } 757 CameraParameters p = cameraState->getShimParams(); 758 if (!p.isEmpty()) { 759 *parameters = p; 760 return NO_ERROR; 761 } 762 } 763 764 ALOGE("%s: Parameters were not initialized, or were empty. Device may not be present.", 765 __FUNCTION__); 766 return INVALID_OPERATION; 767} 768 769status_t CameraService::validateConnectLocked(const String8& cameraId, /*inout*/int& clientUid) 770 const { 771 772 int callingPid = getCallingPid(); 773 774 if (clientUid == USE_CALLING_UID) { 775 clientUid = getCallingUid(); 776 } else { 777 // We only trust our own process to forward client UIDs 778 if (callingPid != getpid()) { 779 ALOGE("CameraService::connect X (PID %d) rejected (don't trust clientUid %d)", 780 callingPid, clientUid); 781 return PERMISSION_DENIED; 782 } 783 } 784 785 if (!mModule) { 786 ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)", 787 callingPid); 788 return -ENODEV; 789 } 790 791 if (getCameraState(cameraId) == nullptr) { 792 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 793 cameraId.string()); 794 return -ENODEV; 795 } 796 797 // Check device policy for this camera 798 char value[PROPERTY_VALUE_MAX]; 799 char key[PROPERTY_KEY_MAX]; 800 userid_t clientUserId = multiuser_get_user_id(clientUid); 801 snprintf(key, PROPERTY_KEY_MAX, "sys.secpolicy.camera.off_%d", clientUserId); 802 property_get(key, value, "0"); 803 if (strcmp(value, "1") == 0) { 804 // Camera is disabled by DevicePolicyManager. 805 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is disabled by device " 806 "policy)", callingPid, cameraId.string()); 807 return -EACCES; 808 } 809 810 // Only allow clients who are being used by the current foreground device user, unless calling 811 // from our own process. 812 if (callingPid != getpid() && (mAllowedUsers.find(clientUserId) == mAllowedUsers.end())) { 813 ALOGE("CameraService::connect X (PID %d) rejected (cannot connect from " 814 "device user %d, currently allowed device users: %s)", callingPid, clientUserId, 815 toString(mAllowedUsers).string()); 816 return PERMISSION_DENIED; 817 } 818 819 return checkIfDeviceIsUsable(cameraId); 820} 821 822status_t CameraService::checkIfDeviceIsUsable(const String8& cameraId) const { 823 auto cameraState = getCameraState(cameraId); 824 int callingPid = getCallingPid(); 825 if (cameraState == nullptr) { 826 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 827 cameraId.string()); 828 return -ENODEV; 829 } 830 831 ICameraServiceListener::Status currentStatus = cameraState->getStatus(); 832 if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { 833 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is not connected)", 834 callingPid, cameraId.string()); 835 return -ENODEV; 836 } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) { 837 ALOGE("CameraService::connect X (PID %d) rejected, (camera %s is initializing)", 838 callingPid, cameraId.string()); 839 return -EBUSY; 840 } 841 842 return NO_ERROR; 843} 844 845void CameraService::finishConnectLocked(const sp<BasicClient>& client, 846 const CameraService::DescriptorPtr& desc) { 847 848 // Make a descriptor for the incoming client 849 auto clientDescriptor = CameraService::CameraClientManager::makeClientDescriptor(client, desc); 850 auto evicted = mActiveClientManager.addAndEvict(clientDescriptor); 851 852 logConnected(desc->getKey(), static_cast<int>(desc->getOwnerId()), 853 String8(client->getPackageName())); 854 855 if (evicted.size() > 0) { 856 // This should never happen - clients should already have been removed in disconnect 857 for (auto& i : evicted) { 858 ALOGE("%s: Invalid state: Client for camera %s was not removed in disconnect", 859 __FUNCTION__, i->getKey().string()); 860 } 861 862 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, clients not evicted properly", 863 __FUNCTION__); 864 } 865} 866 867status_t CameraService::handleEvictionsLocked(const String8& cameraId, int clientPid, 868 apiLevel effectiveApiLevel, const sp<IBinder>& remoteCallback, const String8& packageName, 869 /*out*/ 870 sp<BasicClient>* client, 871 std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>* partial) { 872 873 status_t ret = NO_ERROR; 874 std::vector<DescriptorPtr> evictedClients; 875 DescriptorPtr clientDescriptor; 876 { 877 if (effectiveApiLevel == API_1) { 878 // If we are using API1, any existing client for this camera ID with the same remote 879 // should be returned rather than evicted to allow MediaRecorder to work properly. 880 881 auto current = mActiveClientManager.get(cameraId); 882 if (current != nullptr) { 883 auto clientSp = current->getValue(); 884 if (clientSp.get() != nullptr) { // should never be needed 885 if (!clientSp->canCastToApiClient(effectiveApiLevel)) { 886 ALOGW("CameraService connect called from same client, but with a different" 887 " API level, evicting prior client..."); 888 } else if (clientSp->getRemote() == remoteCallback) { 889 ALOGI("CameraService::connect X (PID %d) (second call from same" 890 " app binder, returning the same client)", clientPid); 891 *client = clientSp; 892 return NO_ERROR; 893 } 894 } 895 } 896 } 897 898 // Return error if the device was unplugged or removed by the HAL for some reason 899 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 900 return ret; 901 } 902 903 // Get current active client PIDs 904 std::vector<int> ownerPids(mActiveClientManager.getAllOwners()); 905 ownerPids.push_back(clientPid); 906 907 // Use the value +PROCESS_STATE_NONEXISTENT, to avoid taking 908 // address of PROCESS_STATE_NONEXISTENT as a reference argument 909 // for the vector constructor. PROCESS_STATE_NONEXISTENT does 910 // not have an out-of-class definition. 911 std::vector<int> priorities(ownerPids.size(), +PROCESS_STATE_NONEXISTENT); 912 913 // Get priorites of all active PIDs 914 ProcessInfoService::getProcessStatesFromPids(ownerPids.size(), &ownerPids[0], 915 /*out*/&priorities[0]); 916 917 // Update all active clients' priorities 918 std::map<int,int> pidToPriorityMap; 919 for (size_t i = 0; i < ownerPids.size() - 1; i++) { 920 pidToPriorityMap.emplace(ownerPids[i], getCameraPriorityFromProcState(priorities[i])); 921 } 922 mActiveClientManager.updatePriorities(pidToPriorityMap); 923 924 // Get state for the given cameraId 925 auto state = getCameraState(cameraId); 926 if (state == nullptr) { 927 ALOGE("CameraService::connect X (PID %d) rejected (no camera device with ID %s)", 928 clientPid, cameraId.string()); 929 return BAD_VALUE; 930 } 931 932 // Make descriptor for incoming client 933 clientDescriptor = CameraClientManager::makeClientDescriptor(cameraId, 934 sp<BasicClient>{nullptr}, static_cast<int32_t>(state->getCost()), 935 state->getConflicting(), 936 getCameraPriorityFromProcState(priorities[priorities.size() - 1]), clientPid); 937 938 // Find clients that would be evicted 939 auto evicted = mActiveClientManager.wouldEvict(clientDescriptor); 940 941 // If the incoming client was 'evicted,' higher priority clients have the camera in the 942 // background, so we cannot do evictions 943 if (std::find(evicted.begin(), evicted.end(), clientDescriptor) != evicted.end()) { 944 ALOGE("CameraService::connect X (PID %d) rejected (existing client(s) with higher" 945 " priority).", clientPid); 946 947 sp<BasicClient> clientSp = clientDescriptor->getValue(); 948 String8 curTime = getFormattedCurrentTime(); 949 auto incompatibleClients = 950 mActiveClientManager.getIncompatibleClients(clientDescriptor); 951 952 String8 msg = String8::format("%s : DENIED connect device %s client for package %s " 953 "(PID %d, priority %d) due to eviction policy", curTime.string(), 954 cameraId.string(), packageName.string(), clientPid, 955 getCameraPriorityFromProcState(priorities[priorities.size() - 1])); 956 957 for (auto& i : incompatibleClients) { 958 msg.appendFormat("\n - Blocked by existing device %s client for package %s" 959 "(PID %" PRId32 ", priority %" PRId32 ")", i->getKey().string(), 960 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 961 i->getPriority()); 962 ALOGE(" Conflicts with: Device %s, client package %s (PID %" 963 PRId32 ", priority %" PRId32 ")", i->getKey().string(), 964 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 965 i->getPriority()); 966 } 967 968 // Log the client's attempt 969 Mutex::Autolock l(mLogLock); 970 mEventLog.add(msg); 971 972 return -EBUSY; 973 } 974 975 for (auto& i : evicted) { 976 sp<BasicClient> clientSp = i->getValue(); 977 if (clientSp.get() == nullptr) { 978 ALOGE("%s: Invalid state: Null client in active client list.", __FUNCTION__); 979 980 // TODO: Remove this 981 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, null client in active list", 982 __FUNCTION__); 983 mActiveClientManager.remove(i); 984 continue; 985 } 986 987 ALOGE("CameraService::connect evicting conflicting client for camera ID %s", 988 i->getKey().string()); 989 evictedClients.push_back(i); 990 991 // Log the clients evicted 992 logEvent(String8::format("EVICT device %s client held by package %s (PID" 993 " %" PRId32 ", priority %" PRId32 ")\n - Evicted by device %s client for" 994 " package %s (PID %d, priority %" PRId32 ")", 995 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 996 i->getOwnerId(), i->getPriority(), cameraId.string(), 997 packageName.string(), clientPid, 998 getCameraPriorityFromProcState(priorities[priorities.size() - 1]))); 999 1000 // Notify the client of disconnection 1001 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1002 CaptureResultExtras()); 1003 } 1004 } 1005 1006 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1007 // other clients from connecting in mServiceLockWrapper if held 1008 mServiceLock.unlock(); 1009 1010 // Clear caller identity temporarily so client disconnect PID checks work correctly 1011 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1012 1013 // Destroy evicted clients 1014 for (auto& i : evictedClients) { 1015 // Disconnect is blocking, and should only have returned when HAL has cleaned up 1016 i->getValue()->disconnect(); // Clients will remove themselves from the active client list 1017 } 1018 1019 IPCThreadState::self()->restoreCallingIdentity(token); 1020 1021 for (const auto& i : evictedClients) { 1022 ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")", 1023 __FUNCTION__, i->getKey().string(), i->getOwnerId()); 1024 ret = mActiveClientManager.waitUntilRemoved(i, DEFAULT_DISCONNECT_TIMEOUT_NS); 1025 if (ret == TIMED_OUT) { 1026 ALOGE("%s: Timed out waiting for client for device %s to disconnect, " 1027 "current clients:\n%s", __FUNCTION__, i->getKey().string(), 1028 mActiveClientManager.toString().string()); 1029 return -EBUSY; 1030 } 1031 if (ret != NO_ERROR) { 1032 ALOGE("%s: Received error waiting for client for device %s to disconnect: %s (%d), " 1033 "current clients:\n%s", __FUNCTION__, i->getKey().string(), strerror(-ret), 1034 ret, mActiveClientManager.toString().string()); 1035 return ret; 1036 } 1037 } 1038 1039 evictedClients.clear(); 1040 1041 // Once clients have been disconnected, relock 1042 mServiceLock.lock(); 1043 1044 // Check again if the device was unplugged or something while we weren't holding mServiceLock 1045 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1046 return ret; 1047 } 1048 1049 *partial = clientDescriptor; 1050 return NO_ERROR; 1051} 1052 1053status_t CameraService::connect( 1054 const sp<ICameraClient>& cameraClient, 1055 int cameraId, 1056 const String16& clientPackageName, 1057 int clientUid, 1058 /*out*/ 1059 sp<ICamera>& device) { 1060 1061 status_t ret = NO_ERROR; 1062 String8 id = String8::format("%d", cameraId); 1063 sp<Client> client = nullptr; 1064 ret = connectHelper<ICameraClient,Client>(cameraClient, id, CAMERA_HAL_API_VERSION_UNSPECIFIED, 1065 clientPackageName, clientUid, API_1, false, false, /*out*/client); 1066 1067 if(ret != NO_ERROR) { 1068 logRejected(id, getCallingPid(), String8(clientPackageName), 1069 String8::format("%s (%d)", strerror(-ret), ret)); 1070 return ret; 1071 } 1072 1073 device = client; 1074 return NO_ERROR; 1075} 1076 1077status_t CameraService::connectLegacy( 1078 const sp<ICameraClient>& cameraClient, 1079 int cameraId, int halVersion, 1080 const String16& clientPackageName, 1081 int clientUid, 1082 /*out*/ 1083 sp<ICamera>& device) { 1084 1085 String8 id = String8::format("%d", cameraId); 1086 int apiVersion = mModule->getModuleApiVersion(); 1087 if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED && 1088 apiVersion < CAMERA_MODULE_API_VERSION_2_3) { 1089 /* 1090 * Either the HAL version is unspecified in which case this just creates 1091 * a camera client selected by the latest device version, or 1092 * it's a particular version in which case the HAL must supported 1093 * the open_legacy call 1094 */ 1095 ALOGE("%s: camera HAL module version %x doesn't support connecting to legacy HAL devices!", 1096 __FUNCTION__, apiVersion); 1097 logRejected(id, getCallingPid(), String8(clientPackageName), 1098 String8("HAL module version doesn't support legacy HAL connections")); 1099 return INVALID_OPERATION; 1100 } 1101 1102 status_t ret = NO_ERROR; 1103 sp<Client> client = nullptr; 1104 ret = connectHelper<ICameraClient,Client>(cameraClient, id, halVersion, clientPackageName, 1105 clientUid, API_1, true, false, /*out*/client); 1106 1107 if(ret != NO_ERROR) { 1108 logRejected(id, getCallingPid(), String8(clientPackageName), 1109 String8::format("%s (%d)", strerror(-ret), ret)); 1110 return ret; 1111 } 1112 1113 device = client; 1114 return NO_ERROR; 1115} 1116 1117status_t CameraService::connectDevice( 1118 const sp<ICameraDeviceCallbacks>& cameraCb, 1119 int cameraId, 1120 const String16& clientPackageName, 1121 int clientUid, 1122 /*out*/ 1123 sp<ICameraDeviceUser>& device) { 1124 1125 status_t ret = NO_ERROR; 1126 String8 id = String8::format("%d", cameraId); 1127 sp<CameraDeviceClient> client = nullptr; 1128 ret = connectHelper<ICameraDeviceCallbacks,CameraDeviceClient>(cameraCb, id, 1129 CAMERA_HAL_API_VERSION_UNSPECIFIED, clientPackageName, clientUid, API_2, false, false, 1130 /*out*/client); 1131 1132 if(ret != NO_ERROR) { 1133 logRejected(id, getCallingPid(), String8(clientPackageName), 1134 String8::format("%s (%d)", strerror(-ret), ret)); 1135 return ret; 1136 } 1137 1138 device = client; 1139 return NO_ERROR; 1140} 1141 1142status_t CameraService::setTorchMode(const String16& cameraId, bool enabled, 1143 const sp<IBinder>& clientBinder) { 1144 if (enabled && clientBinder == NULL) { 1145 ALOGE("%s: torch client binder is NULL", __FUNCTION__); 1146 return -EINVAL; 1147 } 1148 1149 String8 id = String8(cameraId.string()); 1150 1151 // verify id is valid. 1152 auto state = getCameraState(id); 1153 if (state == nullptr) { 1154 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1155 return -EINVAL; 1156 } 1157 1158 ICameraServiceListener::Status cameraStatus = state->getStatus(); 1159 if (cameraStatus != ICameraServiceListener::STATUS_PRESENT && 1160 cameraStatus != ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1161 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1162 return -EINVAL; 1163 } 1164 1165 { 1166 Mutex::Autolock al(mTorchStatusMutex); 1167 ICameraServiceListener::TorchStatus status; 1168 status_t res = getTorchStatusLocked(id, &status); 1169 if (res) { 1170 ALOGE("%s: getting current torch status failed for camera %s", 1171 __FUNCTION__, id.string()); 1172 return -EINVAL; 1173 } 1174 1175 if (status == ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE) { 1176 if (cameraStatus == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1177 ALOGE("%s: torch mode of camera %s is not available because " 1178 "camera is in use", __FUNCTION__, id.string()); 1179 return -EBUSY; 1180 } else { 1181 ALOGE("%s: torch mode of camera %s is not available due to " 1182 "insufficient resources", __FUNCTION__, id.string()); 1183 return -EUSERS; 1184 } 1185 } 1186 } 1187 1188 status_t res = mFlashlight->setTorchMode(id, enabled); 1189 if (res) { 1190 ALOGE("%s: setting torch mode of camera %s to %d failed. %s (%d)", 1191 __FUNCTION__, id.string(), enabled, strerror(-res), res); 1192 return res; 1193 } 1194 1195 { 1196 // update the link to client's death 1197 Mutex::Autolock al(mTorchClientMapMutex); 1198 ssize_t index = mTorchClientMap.indexOfKey(id); 1199 if (enabled) { 1200 if (index == NAME_NOT_FOUND) { 1201 mTorchClientMap.add(id, clientBinder); 1202 } else { 1203 const sp<IBinder> oldBinder = mTorchClientMap.valueAt(index); 1204 oldBinder->unlinkToDeath(this); 1205 1206 mTorchClientMap.replaceValueAt(index, clientBinder); 1207 } 1208 clientBinder->linkToDeath(this); 1209 } else if (index != NAME_NOT_FOUND) { 1210 sp<IBinder> oldBinder = mTorchClientMap.valueAt(index); 1211 oldBinder->unlinkToDeath(this); 1212 } 1213 } 1214 1215 return OK; 1216} 1217 1218void CameraService::notifySystemEvent(int32_t eventId, const int32_t* args, size_t length) { 1219 switch(eventId) { 1220 case ICameraService::USER_SWITCHED: { 1221 doUserSwitch(/*newUserIds*/args, /*length*/length); 1222 break; 1223 } 1224 case ICameraService::NO_EVENT: 1225 default: { 1226 ALOGW("%s: Received invalid system event from system_server: %d", __FUNCTION__, 1227 eventId); 1228 break; 1229 } 1230 } 1231} 1232 1233status_t CameraService::addListener( 1234 const sp<ICameraServiceListener>& listener) { 1235 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); 1236 1237 if (listener == 0) { 1238 ALOGE("%s: Listener must not be null", __FUNCTION__); 1239 return BAD_VALUE; 1240 } 1241 1242 Mutex::Autolock lock(mServiceLock); 1243 1244 { 1245 Mutex::Autolock lock(mStatusListenerLock); 1246 for (auto& it : mListenerList) { 1247 if (IInterface::asBinder(it) == IInterface::asBinder(listener)) { 1248 ALOGW("%s: Tried to add listener %p which was already subscribed", 1249 __FUNCTION__, listener.get()); 1250 return ALREADY_EXISTS; 1251 } 1252 } 1253 1254 mListenerList.push_back(listener); 1255 } 1256 1257 1258 /* Immediately signal current status to this listener only */ 1259 { 1260 Mutex::Autolock lock(mCameraStatesLock); 1261 for (auto& i : mCameraStates) { 1262 // TODO: Update binder to use String16 for camera IDs and remove; 1263 int id = cameraIdToInt(i.first); 1264 if (id == -1) continue; 1265 1266 listener->onStatusChanged(i.second->getStatus(), id); 1267 } 1268 } 1269 1270 /* Immediately signal current torch status to this listener only */ 1271 { 1272 Mutex::Autolock al(mTorchStatusMutex); 1273 for (size_t i = 0; i < mTorchStatusMap.size(); i++ ) { 1274 String16 id = String16(mTorchStatusMap.keyAt(i).string()); 1275 listener->onTorchStatusChanged(mTorchStatusMap.valueAt(i), id); 1276 } 1277 } 1278 1279 return OK; 1280} 1281 1282status_t CameraService::removeListener(const sp<ICameraServiceListener>& listener) { 1283 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); 1284 1285 if (listener == 0) { 1286 ALOGE("%s: Listener must not be null", __FUNCTION__); 1287 return BAD_VALUE; 1288 } 1289 1290 Mutex::Autolock lock(mServiceLock); 1291 1292 { 1293 Mutex::Autolock lock(mStatusListenerLock); 1294 for (auto it = mListenerList.begin(); it != mListenerList.end(); it++) { 1295 if (IInterface::asBinder(*it) == IInterface::asBinder(listener)) { 1296 mListenerList.erase(it); 1297 return OK; 1298 } 1299 } 1300 } 1301 1302 ALOGW("%s: Tried to remove a listener %p which was not subscribed", 1303 __FUNCTION__, listener.get()); 1304 1305 return BAD_VALUE; 1306} 1307 1308status_t CameraService::getLegacyParameters(int cameraId, /*out*/String16* parameters) { 1309 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1310 1311 if (parameters == NULL) { 1312 ALOGE("%s: parameters must not be null", __FUNCTION__); 1313 return BAD_VALUE; 1314 } 1315 1316 status_t ret = 0; 1317 1318 CameraParameters shimParams; 1319 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 1320 // Error logged by caller 1321 return ret; 1322 } 1323 1324 String8 shimParamsString8 = shimParams.flatten(); 1325 String16 shimParamsString16 = String16(shimParamsString8); 1326 1327 *parameters = shimParamsString16; 1328 1329 return OK; 1330} 1331 1332status_t CameraService::supportsCameraApi(int cameraId, int apiVersion) { 1333 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1334 1335 switch (apiVersion) { 1336 case API_VERSION_1: 1337 case API_VERSION_2: 1338 break; 1339 default: 1340 ALOGE("%s: Bad API version %d", __FUNCTION__, apiVersion); 1341 return BAD_VALUE; 1342 } 1343 1344 int facing = -1; 1345 int deviceVersion = getDeviceVersion(cameraId, &facing); 1346 1347 switch(deviceVersion) { 1348 case CAMERA_DEVICE_API_VERSION_1_0: 1349 case CAMERA_DEVICE_API_VERSION_2_0: 1350 case CAMERA_DEVICE_API_VERSION_2_1: 1351 case CAMERA_DEVICE_API_VERSION_3_0: 1352 case CAMERA_DEVICE_API_VERSION_3_1: 1353 if (apiVersion == API_VERSION_2) { 1354 ALOGV("%s: Camera id %d uses HAL prior to HAL3.2, doesn't support api2 without shim", 1355 __FUNCTION__, cameraId); 1356 return -EOPNOTSUPP; 1357 } else { // if (apiVersion == API_VERSION_1) { 1358 ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported", 1359 __FUNCTION__, cameraId); 1360 return OK; 1361 } 1362 case CAMERA_DEVICE_API_VERSION_3_2: 1363 case CAMERA_DEVICE_API_VERSION_3_3: 1364 ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly", 1365 __FUNCTION__, cameraId); 1366 return OK; 1367 case -1: 1368 ALOGE("%s: Invalid camera id %d", __FUNCTION__, cameraId); 1369 return BAD_VALUE; 1370 default: 1371 ALOGE("%s: Unknown camera device HAL version: %d", __FUNCTION__, deviceVersion); 1372 return INVALID_OPERATION; 1373 } 1374 1375 return OK; 1376} 1377 1378void CameraService::removeByClient(const BasicClient* client) { 1379 Mutex::Autolock lock(mServiceLock); 1380 for (auto& i : mActiveClientManager.getAll()) { 1381 auto clientSp = i->getValue(); 1382 if (clientSp.get() == client) { 1383 mActiveClientManager.remove(i); 1384 } 1385 } 1386} 1387 1388bool CameraService::evictClientIdByRemote(const wp<IBinder>& remote) { 1389 const int callingPid = getCallingPid(); 1390 const int servicePid = getpid(); 1391 bool ret = false; 1392 { 1393 // Acquire mServiceLock and prevent other clients from connecting 1394 std::unique_ptr<AutoConditionLock> lock = 1395 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1396 1397 1398 std::vector<sp<BasicClient>> evicted; 1399 for (auto& i : mActiveClientManager.getAll()) { 1400 auto clientSp = i->getValue(); 1401 if (clientSp.get() == nullptr) { 1402 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1403 mActiveClientManager.remove(i); 1404 continue; 1405 } 1406 if (remote == clientSp->getRemote() && (callingPid == servicePid || 1407 callingPid == clientSp->getClientPid())) { 1408 mActiveClientManager.remove(i); 1409 evicted.push_back(clientSp); 1410 1411 // Notify the client of disconnection 1412 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1413 CaptureResultExtras()); 1414 } 1415 } 1416 1417 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1418 // other clients from connecting in mServiceLockWrapper if held 1419 mServiceLock.unlock(); 1420 1421 // Do not clear caller identity, remote caller should be client proccess 1422 1423 for (auto& i : evicted) { 1424 if (i.get() != nullptr) { 1425 i->disconnect(); 1426 ret = true; 1427 } 1428 } 1429 1430 // Reacquire mServiceLock 1431 mServiceLock.lock(); 1432 1433 } // lock is destroyed, allow further connect calls 1434 1435 return ret; 1436} 1437 1438 1439std::shared_ptr<CameraService::CameraState> CameraService::getCameraState( 1440 const String8& cameraId) const { 1441 std::shared_ptr<CameraState> state; 1442 { 1443 Mutex::Autolock lock(mCameraStatesLock); 1444 auto iter = mCameraStates.find(cameraId); 1445 if (iter != mCameraStates.end()) { 1446 state = iter->second; 1447 } 1448 } 1449 return state; 1450} 1451 1452sp<CameraService::BasicClient> CameraService::removeClientLocked(const String8& cameraId) { 1453 // Remove from active clients list 1454 auto clientDescriptorPtr = mActiveClientManager.remove(cameraId); 1455 if (clientDescriptorPtr == nullptr) { 1456 ALOGW("%s: Could not evict client, no client for camera ID %s", __FUNCTION__, 1457 cameraId.string()); 1458 return sp<BasicClient>{nullptr}; 1459 } 1460 1461 return clientDescriptorPtr->getValue(); 1462} 1463 1464void CameraService::doUserSwitch(const int32_t* newUserId, size_t length) { 1465 // Acquire mServiceLock and prevent other clients from connecting 1466 std::unique_ptr<AutoConditionLock> lock = 1467 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1468 1469 std::set<userid_t> newAllowedUsers; 1470 for (size_t i = 0; i < length; i++) { 1471 if (newUserId[i] < 0) { 1472 ALOGE("%s: Bad user ID %d given during user switch, ignoring.", 1473 __FUNCTION__, newUserId[i]); 1474 return; 1475 } 1476 newAllowedUsers.insert(static_cast<userid_t>(newUserId[i])); 1477 } 1478 1479 1480 if (newAllowedUsers == mAllowedUsers) { 1481 ALOGW("%s: Received notification of user switch with no updated user IDs.", __FUNCTION__); 1482 return; 1483 } 1484 1485 logUserSwitch(mAllowedUsers, newAllowedUsers); 1486 1487 mAllowedUsers = std::move(newAllowedUsers); 1488 1489 // Current user has switched, evict all current clients. 1490 std::vector<sp<BasicClient>> evicted; 1491 for (auto& i : mActiveClientManager.getAll()) { 1492 auto clientSp = i->getValue(); 1493 1494 if (clientSp.get() == nullptr) { 1495 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1496 continue; 1497 } 1498 1499 // Don't evict clients that are still allowed. 1500 uid_t clientUid = clientSp->getClientUid(); 1501 userid_t clientUserId = multiuser_get_user_id(clientUid); 1502 if (mAllowedUsers.find(clientUserId) != mAllowedUsers.end()) { 1503 continue; 1504 } 1505 1506 evicted.push_back(clientSp); 1507 1508 String8 curTime = getFormattedCurrentTime(); 1509 1510 ALOGE("Evicting conflicting client for camera ID %s due to user change", 1511 i->getKey().string()); 1512 1513 // Log the clients evicted 1514 logEvent(String8::format("EVICT device %s client held by package %s (PID %" 1515 PRId32 ", priority %" PRId32 ")\n - Evicted due to user switch.", 1516 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1517 i->getOwnerId(), i->getPriority())); 1518 1519 } 1520 1521 // Do not hold mServiceLock while disconnecting clients, but retain the condition 1522 // blocking other clients from connecting in mServiceLockWrapper if held. 1523 mServiceLock.unlock(); 1524 1525 // Clear caller identity temporarily so client disconnect PID checks work correctly 1526 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1527 1528 for (auto& i : evicted) { 1529 i->disconnect(); 1530 } 1531 1532 IPCThreadState::self()->restoreCallingIdentity(token); 1533 1534 // Reacquire mServiceLock 1535 mServiceLock.lock(); 1536} 1537 1538void CameraService::logEvent(const char* event) { 1539 String8 curTime = getFormattedCurrentTime(); 1540 Mutex::Autolock l(mLogLock); 1541 mEventLog.add(String8::format("%s : %s", curTime.string(), event)); 1542} 1543 1544void CameraService::logDisconnected(const char* cameraId, int clientPid, 1545 const char* clientPackage) { 1546 // Log the clients evicted 1547 logEvent(String8::format("DISCONNECT device %s client for package %s (PID %d)", cameraId, 1548 clientPackage, clientPid)); 1549} 1550 1551void CameraService::logConnected(const char* cameraId, int clientPid, 1552 const char* clientPackage) { 1553 // Log the clients evicted 1554 logEvent(String8::format("CONNECT device %s client for package %s (PID %d)", cameraId, 1555 clientPackage, clientPid)); 1556} 1557 1558void CameraService::logRejected(const char* cameraId, int clientPid, 1559 const char* clientPackage, const char* reason) { 1560 // Log the client rejected 1561 logEvent(String8::format("REJECT device %s client for package %s (PID %d), reason: (%s)", 1562 cameraId, clientPackage, clientPid, reason)); 1563} 1564 1565void CameraService::logUserSwitch(const std::set<userid_t>& oldUserIds, 1566 const std::set<userid_t>& newUserIds) { 1567 String8 newUsers = toString(newUserIds); 1568 String8 oldUsers = toString(oldUserIds); 1569 // Log the new and old users 1570 logEvent(String8::format("USER_SWITCH previous allowed users: %s , current allowed users: %s", 1571 oldUsers.string(), newUsers.string())); 1572} 1573 1574void CameraService::logDeviceRemoved(const char* cameraId, const char* reason) { 1575 // Log the device removal 1576 logEvent(String8::format("REMOVE device %s, reason: (%s)", cameraId, reason)); 1577} 1578 1579void CameraService::logDeviceAdded(const char* cameraId, const char* reason) { 1580 // Log the device removal 1581 logEvent(String8::format("ADD device %s, reason: (%s)", cameraId, reason)); 1582} 1583 1584void CameraService::logClientDied(int clientPid, const char* reason) { 1585 // Log the device removal 1586 logEvent(String8::format("DIED client(s) with PID %d, reason: (%s)", clientPid, reason)); 1587} 1588 1589void CameraService::logServiceError(const char* msg, int errorCode) { 1590 String8 curTime = getFormattedCurrentTime(); 1591 logEvent(String8::format("SERVICE ERROR: %s : %d (%s)", msg, errorCode, strerror(errorCode))); 1592} 1593 1594status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply, 1595 uint32_t flags) { 1596 1597 const int pid = getCallingPid(); 1598 const int selfPid = getpid(); 1599 1600 // Permission checks 1601 switch (code) { 1602 case BnCameraService::CONNECT: 1603 case BnCameraService::CONNECT_DEVICE: 1604 case BnCameraService::CONNECT_LEGACY: { 1605 if (pid != selfPid) { 1606 // we're called from a different process, do the real check 1607 if (!checkCallingPermission( 1608 String16("android.permission.CAMERA"))) { 1609 const int uid = getCallingUid(); 1610 ALOGE("Permission Denial: " 1611 "can't use the camera pid=%d, uid=%d", pid, uid); 1612 return PERMISSION_DENIED; 1613 } 1614 } 1615 break; 1616 } 1617 case BnCameraService::NOTIFY_SYSTEM_EVENT: { 1618 if (pid != selfPid) { 1619 // Ensure we're being called by system_server, or similar process with 1620 // permissions to notify the camera service about system events 1621 if (!checkCallingPermission( 1622 String16("android.permission.CAMERA_SEND_SYSTEM_EVENTS"))) { 1623 const int uid = getCallingUid(); 1624 ALOGE("Permission Denial: cannot send updates to camera service about system" 1625 " events from pid=%d, uid=%d", pid, uid); 1626 return PERMISSION_DENIED; 1627 } 1628 } 1629 break; 1630 } 1631 } 1632 1633 return BnCameraService::onTransact(code, data, reply, flags); 1634} 1635 1636// We share the media players for shutter and recording sound for all clients. 1637// A reference count is kept to determine when we will actually release the 1638// media players. 1639 1640MediaPlayer* CameraService::newMediaPlayer(const char *file) { 1641 MediaPlayer* mp = new MediaPlayer(); 1642 if (mp->setDataSource(NULL /* httpService */, file, NULL) == NO_ERROR) { 1643 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 1644 mp->prepare(); 1645 } else { 1646 ALOGE("Failed to load CameraService sounds: %s", file); 1647 return NULL; 1648 } 1649 return mp; 1650} 1651 1652void CameraService::loadSound() { 1653 Mutex::Autolock lock(mSoundLock); 1654 LOG1("CameraService::loadSound ref=%d", mSoundRef); 1655 if (mSoundRef++) return; 1656 1657 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 1658 mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 1659} 1660 1661void CameraService::releaseSound() { 1662 Mutex::Autolock lock(mSoundLock); 1663 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 1664 if (--mSoundRef) return; 1665 1666 for (int i = 0; i < NUM_SOUNDS; i++) { 1667 if (mSoundPlayer[i] != 0) { 1668 mSoundPlayer[i]->disconnect(); 1669 mSoundPlayer[i].clear(); 1670 } 1671 } 1672} 1673 1674void CameraService::playSound(sound_kind kind) { 1675 LOG1("playSound(%d)", kind); 1676 Mutex::Autolock lock(mSoundLock); 1677 sp<MediaPlayer> player = mSoundPlayer[kind]; 1678 if (player != 0) { 1679 player->seekTo(0); 1680 player->start(); 1681 } 1682} 1683 1684// ---------------------------------------------------------------------------- 1685 1686CameraService::Client::Client(const sp<CameraService>& cameraService, 1687 const sp<ICameraClient>& cameraClient, 1688 const String16& clientPackageName, 1689 int cameraId, int cameraFacing, 1690 int clientPid, uid_t clientUid, 1691 int servicePid) : 1692 CameraService::BasicClient(cameraService, 1693 IInterface::asBinder(cameraClient), 1694 clientPackageName, 1695 cameraId, cameraFacing, 1696 clientPid, clientUid, 1697 servicePid) 1698{ 1699 int callingPid = getCallingPid(); 1700 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 1701 1702 mRemoteCallback = cameraClient; 1703 1704 cameraService->loadSound(); 1705 1706 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 1707} 1708 1709// tear down the client 1710CameraService::Client::~Client() { 1711 ALOGV("~Client"); 1712 mDestructionStarted = true; 1713 1714 mCameraService->releaseSound(); 1715 // unconditionally disconnect. function is idempotent 1716 Client::disconnect(); 1717} 1718 1719CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 1720 const sp<IBinder>& remoteCallback, 1721 const String16& clientPackageName, 1722 int cameraId, int cameraFacing, 1723 int clientPid, uid_t clientUid, 1724 int servicePid): 1725 mClientPackageName(clientPackageName), mDisconnected(false) 1726{ 1727 mCameraService = cameraService; 1728 mRemoteBinder = remoteCallback; 1729 mCameraId = cameraId; 1730 mCameraFacing = cameraFacing; 1731 mClientPid = clientPid; 1732 mClientUid = clientUid; 1733 mServicePid = servicePid; 1734 mOpsActive = false; 1735 mDestructionStarted = false; 1736} 1737 1738CameraService::BasicClient::~BasicClient() { 1739 ALOGV("~BasicClient"); 1740 mDestructionStarted = true; 1741} 1742 1743void CameraService::BasicClient::disconnect() { 1744 if (mDisconnected) { 1745 ALOGE("%s: Disconnect called on already disconnected client for device %d", __FUNCTION__, 1746 mCameraId); 1747 return; 1748 } 1749 mDisconnected = true;; 1750 1751 mCameraService->removeByClient(this); 1752 mCameraService->logDisconnected(String8::format("%d", mCameraId), mClientPid, 1753 String8(mClientPackageName)); 1754 1755 sp<IBinder> remote = getRemote(); 1756 if (remote != nullptr) { 1757 remote->unlinkToDeath(mCameraService); 1758 } 1759 1760 finishCameraOps(); 1761 ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid); 1762 1763 // client shouldn't be able to call into us anymore 1764 mClientPid = 0; 1765} 1766 1767String16 CameraService::BasicClient::getPackageName() const { 1768 return mClientPackageName; 1769} 1770 1771 1772int CameraService::BasicClient::getClientPid() const { 1773 return mClientPid; 1774} 1775 1776uid_t CameraService::BasicClient::getClientUid() const { 1777 return mClientUid; 1778} 1779 1780bool CameraService::BasicClient::canCastToApiClient(apiLevel level) const { 1781 // Defaults to API2. 1782 return level == API_2; 1783} 1784 1785status_t CameraService::BasicClient::startCameraOps() { 1786 int32_t res; 1787 // Notify app ops that the camera is not available 1788 mOpsCallback = new OpsCallback(this); 1789 1790 { 1791 ALOGV("%s: Start camera ops, package name = %s, client UID = %d", 1792 __FUNCTION__, String8(mClientPackageName).string(), mClientUid); 1793 } 1794 1795 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 1796 mClientPackageName, mOpsCallback); 1797 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 1798 mClientUid, mClientPackageName); 1799 1800 if (res == AppOpsManager::MODE_ERRORED) { 1801 ALOGI("Camera %d: Access for \"%s\" has been revoked", 1802 mCameraId, String8(mClientPackageName).string()); 1803 return PERMISSION_DENIED; 1804 } 1805 1806 if (res == AppOpsManager::MODE_IGNORED) { 1807 ALOGI("Camera %d: Access for \"%s\" has been restricted", 1808 mCameraId, String8(mClientPackageName).string()); 1809 return INVALID_OPERATION; 1810 } 1811 1812 mOpsActive = true; 1813 1814 // Transition device availability listeners from PRESENT -> NOT_AVAILABLE 1815 mCameraService->updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 1816 String8::format("%d", mCameraId)); 1817 1818 return OK; 1819} 1820 1821status_t CameraService::BasicClient::finishCameraOps() { 1822 // Check if startCameraOps succeeded, and if so, finish the camera op 1823 if (mOpsActive) { 1824 // Notify app ops that the camera is available again 1825 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 1826 mClientPackageName); 1827 mOpsActive = false; 1828 1829 auto rejected = {ICameraServiceListener::STATUS_NOT_PRESENT, 1830 ICameraServiceListener::STATUS_ENUMERATING}; 1831 1832 // Transition to PRESENT if the camera is not in either of the rejected states 1833 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, 1834 String8::format("%d", mCameraId), rejected); 1835 1836 // Notify flashlight that a camera device is closed. 1837 mCameraService->mFlashlight->deviceClosed( 1838 String8::format("%d", mCameraId)); 1839 } 1840 // Always stop watching, even if no camera op is active 1841 if (mOpsCallback != NULL) { 1842 mAppOpsManager.stopWatchingMode(mOpsCallback); 1843 } 1844 mOpsCallback.clear(); 1845 1846 return OK; 1847} 1848 1849void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 1850 String8 name(packageName); 1851 String8 myName(mClientPackageName); 1852 1853 if (op != AppOpsManager::OP_CAMERA) { 1854 ALOGW("Unexpected app ops notification received: %d", op); 1855 return; 1856 } 1857 1858 int32_t res; 1859 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 1860 mClientUid, mClientPackageName); 1861 ALOGV("checkOp returns: %d, %s ", res, 1862 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 1863 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 1864 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 1865 "UNKNOWN"); 1866 1867 if (res != AppOpsManager::MODE_ALLOWED) { 1868 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 1869 myName.string()); 1870 // Reset the client PID to allow server-initiated disconnect, 1871 // and to prevent further calls by client. 1872 mClientPid = getCallingPid(); 1873 CaptureResultExtras resultExtras; // a dummy result (invalid) 1874 notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE, resultExtras); 1875 disconnect(); 1876 } 1877} 1878 1879// ---------------------------------------------------------------------------- 1880 1881// Provide client strong pointer for callbacks. 1882sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) { 1883 String8 cameraId = String8::format("%d", (int)(intptr_t) user); 1884 auto clientDescriptor = gCameraService->mActiveClientManager.get(cameraId); 1885 if (clientDescriptor != nullptr) { 1886 return sp<Client>{ 1887 static_cast<Client*>(clientDescriptor->getValue().get())}; 1888 } 1889 return sp<Client>{nullptr}; 1890} 1891 1892void CameraService::Client::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 1893 const CaptureResultExtras& resultExtras) { 1894 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 1895} 1896 1897// NOTE: function is idempotent 1898void CameraService::Client::disconnect() { 1899 ALOGV("Client::disconnect"); 1900 BasicClient::disconnect(); 1901} 1902 1903bool CameraService::Client::canCastToApiClient(apiLevel level) const { 1904 return level == API_1; 1905} 1906 1907CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 1908 mClient(client) { 1909} 1910 1911void CameraService::Client::OpsCallback::opChanged(int32_t op, 1912 const String16& packageName) { 1913 sp<BasicClient> client = mClient.promote(); 1914 if (client != NULL) { 1915 client->opChanged(op, packageName); 1916 } 1917} 1918 1919// ---------------------------------------------------------------------------- 1920// CameraState 1921// ---------------------------------------------------------------------------- 1922 1923CameraService::CameraState::CameraState(const String8& id, int cost, 1924 const std::set<String8>& conflicting) : mId(id), 1925 mStatus(ICameraServiceListener::STATUS_PRESENT), mCost(cost), mConflicting(conflicting) {} 1926 1927CameraService::CameraState::~CameraState() {} 1928 1929ICameraServiceListener::Status CameraService::CameraState::getStatus() const { 1930 Mutex::Autolock lock(mStatusLock); 1931 return mStatus; 1932} 1933 1934CameraParameters CameraService::CameraState::getShimParams() const { 1935 return mShimParams; 1936} 1937 1938void CameraService::CameraState::setShimParams(const CameraParameters& params) { 1939 mShimParams = params; 1940} 1941 1942int CameraService::CameraState::getCost() const { 1943 return mCost; 1944} 1945 1946std::set<String8> CameraService::CameraState::getConflicting() const { 1947 return mConflicting; 1948} 1949 1950String8 CameraService::CameraState::getId() const { 1951 return mId; 1952} 1953 1954// ---------------------------------------------------------------------------- 1955// CameraClientManager 1956// ---------------------------------------------------------------------------- 1957 1958CameraService::CameraClientManager::~CameraClientManager() {} 1959 1960sp<CameraService::BasicClient> CameraService::CameraClientManager::getCameraClient( 1961 const String8& id) const { 1962 auto descriptor = get(id); 1963 if (descriptor == nullptr) { 1964 return sp<BasicClient>{nullptr}; 1965 } 1966 return descriptor->getValue(); 1967} 1968 1969String8 CameraService::CameraClientManager::toString() const { 1970 auto all = getAll(); 1971 String8 ret("["); 1972 bool hasAny = false; 1973 for (auto& i : all) { 1974 hasAny = true; 1975 String8 key = i->getKey(); 1976 int32_t cost = i->getCost(); 1977 int32_t pid = i->getOwnerId(); 1978 int32_t priority = i->getPriority(); 1979 auto conflicting = i->getConflicting(); 1980 auto clientSp = i->getValue(); 1981 String8 packageName; 1982 userid_t clientUserId = 0; 1983 if (clientSp.get() != nullptr) { 1984 packageName = String8{clientSp->getPackageName()}; 1985 uid_t clientUid = clientSp->getClientUid(); 1986 clientUserId = multiuser_get_user_id(clientUid); 1987 } 1988 ret.appendFormat("\n(Camera ID: %s, Cost: %" PRId32 ", PID: %" PRId32 ", Priority: %" 1989 PRId32 ", ", key.string(), cost, pid, priority); 1990 1991 if (clientSp.get() != nullptr) { 1992 ret.appendFormat("User Id: %d, ", clientUserId); 1993 } 1994 if (packageName.size() != 0) { 1995 ret.appendFormat("Client Package Name: %s", packageName.string()); 1996 } 1997 1998 ret.append(", Conflicting Client Devices: {"); 1999 for (auto& j : conflicting) { 2000 ret.appendFormat("%s, ", j.string()); 2001 } 2002 ret.append("})"); 2003 } 2004 if (hasAny) ret.append("\n"); 2005 ret.append("]\n"); 2006 return ret; 2007} 2008 2009CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2010 const String8& key, const sp<BasicClient>& value, int32_t cost, 2011 const std::set<String8>& conflictingKeys, int32_t priority, int32_t ownerId) { 2012 2013 return std::make_shared<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>( 2014 key, value, cost, conflictingKeys, priority, ownerId); 2015} 2016 2017CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2018 const sp<BasicClient>& value, const CameraService::DescriptorPtr& partial) { 2019 return makeClientDescriptor(partial->getKey(), value, partial->getCost(), 2020 partial->getConflicting(), partial->getPriority(), partial->getOwnerId()); 2021} 2022 2023// ---------------------------------------------------------------------------- 2024 2025static const int kDumpLockRetries = 50; 2026static const int kDumpLockSleep = 60000; 2027 2028static bool tryLock(Mutex& mutex) 2029{ 2030 bool locked = false; 2031 for (int i = 0; i < kDumpLockRetries; ++i) { 2032 if (mutex.tryLock() == NO_ERROR) { 2033 locked = true; 2034 break; 2035 } 2036 usleep(kDumpLockSleep); 2037 } 2038 return locked; 2039} 2040 2041status_t CameraService::dump(int fd, const Vector<String16>& args) { 2042 String8 result("Dump of the Camera Service:\n"); 2043 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 2044 result.appendFormat("Permission Denial: " 2045 "can't dump CameraService from pid=%d, uid=%d\n", 2046 getCallingPid(), 2047 getCallingUid()); 2048 write(fd, result.string(), result.size()); 2049 } else { 2050 bool locked = tryLock(mServiceLock); 2051 // failed to lock - CameraService is probably deadlocked 2052 if (!locked) { 2053 result.append("CameraService may be deadlocked\n"); 2054 write(fd, result.string(), result.size()); 2055 } 2056 2057 bool hasClient = false; 2058 if (!mModule) { 2059 result = String8::format("No camera module available!\n"); 2060 write(fd, result.string(), result.size()); 2061 2062 // Dump event log for error information 2063 dumpEventLog(fd); 2064 2065 if (locked) mServiceLock.unlock(); 2066 return NO_ERROR; 2067 } 2068 2069 result = String8::format("Camera module HAL API version: 0x%x\n", mModule->getHalApiVersion()); 2070 result.appendFormat("Camera module API version: 0x%x\n", mModule->getModuleApiVersion()); 2071 result.appendFormat("Camera module name: %s\n", mModule->getModuleName()); 2072 result.appendFormat("Camera module author: %s\n", mModule->getModuleAuthor()); 2073 result.appendFormat("Number of camera devices: %d\n", mNumberOfCameras); 2074 String8 activeClientString = mActiveClientManager.toString(); 2075 result.appendFormat("Active Camera Clients:\n%s", activeClientString.string()); 2076 result.appendFormat("Allowed users:\n%s\n", toString(mAllowedUsers).string()); 2077 2078 sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 2079 if (desc == NULL) { 2080 result.appendFormat("Vendor tags left unimplemented.\n"); 2081 } else { 2082 result.appendFormat("Vendor tag definitions:\n"); 2083 } 2084 2085 write(fd, result.string(), result.size()); 2086 2087 if (desc != NULL) { 2088 desc->dump(fd, /*verbosity*/2, /*indentation*/4); 2089 } 2090 2091 dumpEventLog(fd); 2092 2093 bool stateLocked = tryLock(mCameraStatesLock); 2094 if (!stateLocked) { 2095 result = String8::format("CameraStates in use, may be deadlocked\n"); 2096 write(fd, result.string(), result.size()); 2097 } 2098 2099 for (auto& state : mCameraStates) { 2100 String8 cameraId = state.first; 2101 result = String8::format("Camera %s information:\n", cameraId.string()); 2102 camera_info info; 2103 2104 // TODO: Change getCameraInfo + HAL to use String cameraIds 2105 status_t rc = mModule->getCameraInfo(cameraIdToInt(cameraId), &info); 2106 if (rc != OK) { 2107 result.appendFormat(" Error reading static information!\n"); 2108 write(fd, result.string(), result.size()); 2109 } else { 2110 result.appendFormat(" Facing: %s\n", 2111 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 2112 result.appendFormat(" Orientation: %d\n", info.orientation); 2113 int deviceVersion; 2114 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0) { 2115 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 2116 } else { 2117 deviceVersion = info.device_version; 2118 } 2119 2120 auto conflicting = state.second->getConflicting(); 2121 result.appendFormat(" Resource Cost: %d\n", state.second->getCost()); 2122 result.appendFormat(" Conflicting Devices:"); 2123 for (auto& id : conflicting) { 2124 result.appendFormat(" %s", cameraId.string()); 2125 } 2126 if (conflicting.size() == 0) { 2127 result.appendFormat(" NONE"); 2128 } 2129 result.appendFormat("\n"); 2130 2131 result.appendFormat(" Device version: %#x\n", deviceVersion); 2132 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { 2133 result.appendFormat(" Device static metadata:\n"); 2134 write(fd, result.string(), result.size()); 2135 dump_indented_camera_metadata(info.static_camera_characteristics, 2136 fd, /*verbosity*/2, /*indentation*/4); 2137 } else { 2138 write(fd, result.string(), result.size()); 2139 } 2140 2141 CameraParameters p = state.second->getShimParams(); 2142 if (!p.isEmpty()) { 2143 result = String8::format(" Camera1 API shim is using parameters:\n "); 2144 write(fd, result.string(), result.size()); 2145 p.dump(fd, args); 2146 } 2147 } 2148 2149 auto clientDescriptor = mActiveClientManager.get(cameraId); 2150 if (clientDescriptor == nullptr) { 2151 result = String8::format(" Device %s is closed, no client instance\n", 2152 cameraId.string()); 2153 write(fd, result.string(), result.size()); 2154 continue; 2155 } 2156 hasClient = true; 2157 result = String8::format(" Device %s is open. Client instance dump:\n\n", 2158 cameraId.string()); 2159 result.appendFormat("Client priority level: %d\n", clientDescriptor->getPriority()); 2160 result.appendFormat("Client PID: %d\n", clientDescriptor->getOwnerId()); 2161 2162 auto client = clientDescriptor->getValue(); 2163 result.appendFormat("Client package: %s\n", 2164 String8(client->getPackageName()).string()); 2165 write(fd, result.string(), result.size()); 2166 2167 client->dump(fd, args); 2168 } 2169 2170 if (stateLocked) mCameraStatesLock.unlock(); 2171 2172 if (!hasClient) { 2173 result = String8::format("\nNo active camera clients yet.\n"); 2174 write(fd, result.string(), result.size()); 2175 } 2176 2177 if (locked) mServiceLock.unlock(); 2178 2179 // Dump camera traces if there were any 2180 write(fd, "\n", 1); 2181 camera3::CameraTraces::dump(fd, args); 2182 2183 // change logging level 2184 int n = args.size(); 2185 for (int i = 0; i + 1 < n; i++) { 2186 String16 verboseOption("-v"); 2187 if (args[i] == verboseOption) { 2188 String8 levelStr(args[i+1]); 2189 int level = atoi(levelStr.string()); 2190 result = String8::format("\nSetting log level to %d.\n", level); 2191 setLogLevel(level); 2192 write(fd, result.string(), result.size()); 2193 } 2194 } 2195 } 2196 return NO_ERROR; 2197} 2198 2199void CameraService::dumpEventLog(int fd) { 2200 String8 result = String8("\nPrior client events (most recent at top):\n"); 2201 2202 Mutex::Autolock l(mLogLock); 2203 for (const auto& msg : mEventLog) { 2204 result.appendFormat(" %s\n", msg.string()); 2205 } 2206 2207 if (mEventLog.size() == DEFAULT_EVENT_LOG_LENGTH) { 2208 result.append(" ...\n"); 2209 } else if (mEventLog.size() == 0) { 2210 result.append(" [no events yet]\n"); 2211 } 2212 result.append("\n"); 2213 2214 write(fd, result.string(), result.size()); 2215} 2216 2217void CameraService::handleTorchClientBinderDied(const wp<IBinder> &who) { 2218 Mutex::Autolock al(mTorchClientMapMutex); 2219 for (size_t i = 0; i < mTorchClientMap.size(); i++) { 2220 if (mTorchClientMap[i] == who) { 2221 // turn off the torch mode that was turned on by dead client 2222 String8 cameraId = mTorchClientMap.keyAt(i); 2223 status_t res = mFlashlight->setTorchMode(cameraId, false); 2224 if (res) { 2225 ALOGE("%s: torch client died but couldn't turn off torch: " 2226 "%s (%d)", __FUNCTION__, strerror(-res), res); 2227 return; 2228 } 2229 mTorchClientMap.removeItemsAt(i); 2230 break; 2231 } 2232 } 2233} 2234 2235/*virtual*/void CameraService::binderDied(const wp<IBinder> &who) { 2236 2237 /** 2238 * While tempting to promote the wp<IBinder> into a sp, it's actually not supported by the 2239 * binder driver 2240 */ 2241 2242 logClientDied(getCallingPid(), String8("Binder died unexpectedly")); 2243 2244 // check torch client 2245 handleTorchClientBinderDied(who); 2246 2247 // check camera device client 2248 if(!evictClientIdByRemote(who)) { 2249 ALOGV("%s: Java client's binder death already cleaned up (normal case)", __FUNCTION__); 2250 return; 2251 } 2252 2253 ALOGE("%s: Java client's binder died, removing it from the list of active clients", 2254 __FUNCTION__); 2255} 2256 2257void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId) { 2258 updateStatus(status, cameraId, {}); 2259} 2260 2261void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId, 2262 std::initializer_list<ICameraServiceListener::Status> rejectSourceStates) { 2263 // Do not lock mServiceLock here or can get into a deadlock from 2264 // connect() -> disconnect -> updateStatus 2265 2266 auto state = getCameraState(cameraId); 2267 2268 if (state == nullptr) { 2269 ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__, 2270 cameraId.string()); 2271 return; 2272 } 2273 2274 // Update the status for this camera state, then send the onStatusChangedCallbacks to each 2275 // of the listeners with both the mStatusStatus and mStatusListenerLock held 2276 state->updateStatus(status, cameraId, rejectSourceStates, [this] 2277 (const String8& cameraId, ICameraServiceListener::Status status) { 2278 2279 if (status != ICameraServiceListener::STATUS_ENUMERATING) { 2280 // Update torch status if it has a flash unit. 2281 Mutex::Autolock al(mTorchStatusMutex); 2282 ICameraServiceListener::TorchStatus torchStatus; 2283 if (getTorchStatusLocked(cameraId, &torchStatus) != 2284 NAME_NOT_FOUND) { 2285 ICameraServiceListener::TorchStatus newTorchStatus = 2286 status == ICameraServiceListener::STATUS_PRESENT ? 2287 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF : 2288 ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 2289 if (torchStatus != newTorchStatus) { 2290 onTorchStatusChangedLocked(cameraId, newTorchStatus); 2291 } 2292 } 2293 } 2294 2295 Mutex::Autolock lock(mStatusListenerLock); 2296 2297 for (auto& listener : mListenerList) { 2298 // TODO: Refactor status listeners to use strings for Camera IDs and remove this. 2299 int id = cameraIdToInt(cameraId); 2300 if (id != -1) listener->onStatusChanged(status, id); 2301 } 2302 }); 2303} 2304 2305status_t CameraService::getTorchStatusLocked( 2306 const String8& cameraId, 2307 ICameraServiceListener::TorchStatus *status) const { 2308 if (!status) { 2309 return BAD_VALUE; 2310 } 2311 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2312 if (index == NAME_NOT_FOUND) { 2313 // invalid camera ID or the camera doesn't have a flash unit 2314 return NAME_NOT_FOUND; 2315 } 2316 2317 *status = mTorchStatusMap.valueAt(index); 2318 return OK; 2319} 2320 2321status_t CameraService::setTorchStatusLocked(const String8& cameraId, 2322 ICameraServiceListener::TorchStatus status) { 2323 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2324 if (index == NAME_NOT_FOUND) { 2325 return BAD_VALUE; 2326 } 2327 ICameraServiceListener::TorchStatus& item = 2328 mTorchStatusMap.editValueAt(index); 2329 item = status; 2330 2331 return OK; 2332} 2333 2334}; // namespace android 2335