CameraService.cpp revision be0b6b4a3770a9dd2ff357fe3e88a6ba11a976ff
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 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 679status_t CameraService::initializeShimMetadata(int cameraId) { 680 int uid = getCallingUid(); 681 682 String16 internalPackageName("media"); 683 String8 id = String8::format("%d", cameraId); 684 status_t ret = NO_ERROR; 685 sp<Client> tmp = nullptr; 686 if ((ret = connectHelper<ICameraClient,Client>(sp<ICameraClient>{nullptr}, id, 687 static_cast<int>(CAMERA_HAL_API_VERSION_UNSPECIFIED), internalPackageName, uid, API_1, 688 false, true, tmp)) != NO_ERROR) { 689 ALOGE("%s: Error %d (%s) initializing shim metadata.", __FUNCTION__, ret, strerror(ret)); 690 return ret; 691 } 692 return NO_ERROR; 693} 694 695status_t CameraService::getLegacyParametersLazy(int cameraId, 696 /*out*/ 697 CameraParameters* parameters) { 698 699 ALOGV("%s: for cameraId: %d", __FUNCTION__, cameraId); 700 701 status_t ret = 0; 702 703 if (parameters == NULL) { 704 ALOGE("%s: parameters must not be null", __FUNCTION__); 705 return BAD_VALUE; 706 } 707 708 String8 id = String8::format("%d", cameraId); 709 710 // Check if we already have parameters 711 { 712 // Scope for service lock 713 Mutex::Autolock lock(mServiceLock); 714 auto cameraState = getCameraState(id); 715 if (cameraState == nullptr) { 716 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 717 return BAD_VALUE; 718 } 719 CameraParameters p = cameraState->getShimParams(); 720 if (!p.isEmpty()) { 721 *parameters = p; 722 return NO_ERROR; 723 } 724 } 725 726 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 727 ret = initializeShimMetadata(cameraId); 728 IPCThreadState::self()->restoreCallingIdentity(token); 729 if (ret != NO_ERROR) { 730 // Error already logged by callee 731 return ret; 732 } 733 734 // Check for parameters again 735 { 736 // Scope for service lock 737 Mutex::Autolock lock(mServiceLock); 738 auto cameraState = getCameraState(id); 739 if (cameraState == nullptr) { 740 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 741 return BAD_VALUE; 742 } 743 CameraParameters p = cameraState->getShimParams(); 744 if (!p.isEmpty()) { 745 *parameters = p; 746 return NO_ERROR; 747 } 748 } 749 750 ALOGE("%s: Parameters were not initialized, or were empty. Device may not be present.", 751 __FUNCTION__); 752 return INVALID_OPERATION; 753} 754 755status_t CameraService::validateConnectLocked(const String8& cameraId, /*inout*/int& clientUid) 756 const { 757 758 int callingPid = getCallingPid(); 759 760 if (clientUid == USE_CALLING_UID) { 761 clientUid = getCallingUid(); 762 } else { 763 // We only trust our own process to forward client UIDs 764 if (callingPid != getpid()) { 765 ALOGE("CameraService::connect X (PID %d) rejected (don't trust clientUid %d)", 766 callingPid, clientUid); 767 return PERMISSION_DENIED; 768 } 769 } 770 771 if (!mModule) { 772 ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)", 773 callingPid); 774 return -ENODEV; 775 } 776 777 if (getCameraState(cameraId) == nullptr) { 778 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 779 cameraId.string()); 780 return -ENODEV; 781 } 782 783 // Check device policy for this camera 784 char value[PROPERTY_VALUE_MAX]; 785 char key[PROPERTY_KEY_MAX]; 786 int clientUserId = multiuser_get_user_id(clientUid); 787 snprintf(key, PROPERTY_KEY_MAX, "sys.secpolicy.camera.off_%d", clientUserId); 788 property_get(key, value, "0"); 789 if (strcmp(value, "1") == 0) { 790 // Camera is disabled by DevicePolicyManager. 791 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is disabled by device " 792 "policy)", callingPid, cameraId.string()); 793 return -EACCES; 794 } 795 796 // Only allow clients who are being used by the current foreground device user, unless calling 797 // from our own process. 798 if (callingPid != getpid() && 799 (mLastUserId != clientUserId && mLastUserId != DEFAULT_LAST_USER_ID)) { 800 ALOGE("CameraService::connect X (PID %d) rejected (cannot connect from previous " 801 "device user %d, current device user %d)", callingPid, clientUserId, mLastUserId); 802 return PERMISSION_DENIED; 803 } 804 805 return checkIfDeviceIsUsable(cameraId); 806} 807 808status_t CameraService::checkIfDeviceIsUsable(const String8& cameraId) const { 809 auto cameraState = getCameraState(cameraId); 810 int callingPid = getCallingPid(); 811 if (cameraState == nullptr) { 812 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 813 cameraId.string()); 814 return -ENODEV; 815 } 816 817 ICameraServiceListener::Status currentStatus = cameraState->getStatus(); 818 if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { 819 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is not connected)", 820 callingPid, cameraId.string()); 821 return -ENODEV; 822 } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) { 823 ALOGE("CameraService::connect X (PID %d) rejected, (camera %s is initializing)", 824 callingPid, cameraId.string()); 825 return -EBUSY; 826 } 827 828 return NO_ERROR; 829} 830 831void CameraService::finishConnectLocked(const sp<BasicClient>& client, 832 const CameraService::DescriptorPtr& desc) { 833 834 // Make a descriptor for the incoming client 835 auto clientDescriptor = CameraService::CameraClientManager::makeClientDescriptor(client, desc); 836 auto evicted = mActiveClientManager.addAndEvict(clientDescriptor); 837 838 logConnected(desc->getKey(), static_cast<int>(desc->getOwnerId()), 839 String8(client->getPackageName())); 840 841 if (evicted.size() > 0) { 842 // This should never happen - clients should already have been removed in disconnect 843 for (auto& i : evicted) { 844 ALOGE("%s: Invalid state: Client for camera %s was not removed in disconnect", 845 __FUNCTION__, i->getKey().string()); 846 } 847 848 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, clients not evicted properly", 849 __FUNCTION__); 850 } 851} 852 853status_t CameraService::handleEvictionsLocked(const String8& cameraId, int clientPid, 854 apiLevel effectiveApiLevel, const sp<IBinder>& remoteCallback, const String8& packageName, 855 /*out*/ 856 sp<BasicClient>* client, 857 std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>* partial) { 858 859 status_t ret = NO_ERROR; 860 std::vector<DescriptorPtr> evictedClients; 861 DescriptorPtr clientDescriptor; 862 { 863 if (effectiveApiLevel == API_1) { 864 // If we are using API1, any existing client for this camera ID with the same remote 865 // should be returned rather than evicted to allow MediaRecorder to work properly. 866 867 auto current = mActiveClientManager.get(cameraId); 868 if (current != nullptr) { 869 auto clientSp = current->getValue(); 870 if (clientSp.get() != nullptr) { // should never be needed 871 if (!clientSp->canCastToApiClient(effectiveApiLevel)) { 872 ALOGW("CameraService connect called from same client, but with a different" 873 " API level, evicting prior client..."); 874 } else if (clientSp->getRemote() == remoteCallback) { 875 ALOGI("CameraService::connect X (PID %d) (second call from same" 876 " app binder, returning the same client)", clientPid); 877 *client = clientSp; 878 return NO_ERROR; 879 } 880 } 881 } 882 } 883 884 // Return error if the device was unplugged or removed by the HAL for some reason 885 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 886 return ret; 887 } 888 889 // Get current active client PIDs 890 std::vector<int> ownerPids(mActiveClientManager.getAllOwners()); 891 ownerPids.push_back(clientPid); 892 893 // Use the value +PROCESS_STATE_NONEXISTENT, to avoid taking 894 // address of PROCESS_STATE_NONEXISTENT as a reference argument 895 // for the vector constructor. PROCESS_STATE_NONEXISTENT does 896 // not have an out-of-class definition. 897 std::vector<int> priorities(ownerPids.size(), +PROCESS_STATE_NONEXISTENT); 898 899 // Get priorites of all active PIDs 900 ProcessInfoService::getProcessStatesFromPids(ownerPids.size(), &ownerPids[0], 901 /*out*/&priorities[0]); 902 903 // Update all active clients' priorities 904 std::map<int,int> pidToPriorityMap; 905 for (size_t i = 0; i < ownerPids.size() - 1; i++) { 906 pidToPriorityMap.emplace(ownerPids[i], getCameraPriorityFromProcState(priorities[i])); 907 } 908 mActiveClientManager.updatePriorities(pidToPriorityMap); 909 910 // Get state for the given cameraId 911 auto state = getCameraState(cameraId); 912 if (state == nullptr) { 913 ALOGE("CameraService::connect X (PID %d) rejected (no camera device with ID %s)", 914 clientPid, cameraId.string()); 915 return BAD_VALUE; 916 } 917 918 // Make descriptor for incoming client 919 clientDescriptor = CameraClientManager::makeClientDescriptor(cameraId, 920 sp<BasicClient>{nullptr}, static_cast<int32_t>(state->getCost()), 921 state->getConflicting(), 922 getCameraPriorityFromProcState(priorities[priorities.size() - 1]), clientPid); 923 924 // Find clients that would be evicted 925 auto evicted = mActiveClientManager.wouldEvict(clientDescriptor); 926 927 // If the incoming client was 'evicted,' higher priority clients have the camera in the 928 // background, so we cannot do evictions 929 if (std::find(evicted.begin(), evicted.end(), clientDescriptor) != evicted.end()) { 930 ALOGE("CameraService::connect X (PID %d) rejected (existing client(s) with higher" 931 " priority).", clientPid); 932 933 sp<BasicClient> clientSp = clientDescriptor->getValue(); 934 String8 curTime = getFormattedCurrentTime(); 935 auto incompatibleClients = 936 mActiveClientManager.getIncompatibleClients(clientDescriptor); 937 938 String8 msg = String8::format("%s : DENIED connect device %s client for package %s " 939 "(PID %d, priority %d) due to eviction policy", curTime.string(), 940 cameraId.string(), packageName.string(), clientPid, 941 getCameraPriorityFromProcState(priorities[priorities.size() - 1])); 942 943 for (auto& i : incompatibleClients) { 944 msg.appendFormat("\n - Blocked by existing device %s client for package %s" 945 "(PID %" PRId32 ", priority %" PRId32 ")", i->getKey().string(), 946 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 947 i->getPriority()); 948 } 949 950 // Log the client's attempt 951 Mutex::Autolock l(mLogLock); 952 mEventLog.add(msg); 953 954 return -EBUSY; 955 } 956 957 for (auto& i : evicted) { 958 sp<BasicClient> clientSp = i->getValue(); 959 if (clientSp.get() == nullptr) { 960 ALOGE("%s: Invalid state: Null client in active client list.", __FUNCTION__); 961 962 // TODO: Remove this 963 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, null client in active list", 964 __FUNCTION__); 965 mActiveClientManager.remove(i); 966 continue; 967 } 968 969 ALOGE("CameraService::connect evicting conflicting client for camera ID %s", 970 i->getKey().string()); 971 evictedClients.push_back(i); 972 973 // Log the clients evicted 974 logEvent(String8::format("EVICT device %s client held by package %s (PID" 975 " %" PRId32 ", priority %" PRId32 ")\n - Evicted by device %s client for" 976 " package %s (PID %d, priority %" PRId32 ")", 977 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 978 i->getOwnerId(), i->getPriority(), cameraId.string(), 979 packageName.string(), clientPid, 980 getCameraPriorityFromProcState(priorities[priorities.size() - 1]))); 981 982 // Notify the client of disconnection 983 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 984 CaptureResultExtras()); 985 } 986 } 987 988 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 989 // other clients from connecting in mServiceLockWrapper if held 990 mServiceLock.unlock(); 991 992 // Clear caller identity temporarily so client disconnect PID checks work correctly 993 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 994 995 // Destroy evicted clients 996 for (auto& i : evictedClients) { 997 // Disconnect is blocking, and should only have returned when HAL has cleaned up 998 i->getValue()->disconnect(); // Clients will remove themselves from the active client list 999 } 1000 1001 IPCThreadState::self()->restoreCallingIdentity(token); 1002 1003 for (const auto& i : evictedClients) { 1004 ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")", 1005 __FUNCTION__, i->getKey().string(), i->getOwnerId()); 1006 ret = mActiveClientManager.waitUntilRemoved(i, DEFAULT_DISCONNECT_TIMEOUT_NS); 1007 if (ret == TIMED_OUT) { 1008 ALOGE("%s: Timed out waiting for client for device %s to disconnect, " 1009 "current clients:\n%s", __FUNCTION__, i->getKey().string(), 1010 mActiveClientManager.toString().string()); 1011 return -EBUSY; 1012 } 1013 if (ret != NO_ERROR) { 1014 ALOGE("%s: Received error waiting for client for device %s to disconnect: %s (%d), " 1015 "current clients:\n%s", __FUNCTION__, i->getKey().string(), strerror(-ret), 1016 ret, mActiveClientManager.toString().string()); 1017 return ret; 1018 } 1019 } 1020 1021 evictedClients.clear(); 1022 1023 // Once clients have been disconnected, relock 1024 mServiceLock.lock(); 1025 1026 // Check again if the device was unplugged or something while we weren't holding mServiceLock 1027 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1028 return ret; 1029 } 1030 1031 *partial = clientDescriptor; 1032 return NO_ERROR; 1033} 1034 1035status_t CameraService::connect( 1036 const sp<ICameraClient>& cameraClient, 1037 int cameraId, 1038 const String16& opPackageName, 1039 int clientUid, 1040 /*out*/ 1041 sp<ICamera>& device) { 1042 1043 const status_t result = checkCameraAccess(opPackageName); 1044 if (result != NO_ERROR) { 1045 return result; 1046 } 1047 1048 status_t ret = NO_ERROR; 1049 String8 id = String8::format("%d", cameraId); 1050 sp<Client> client = nullptr; 1051 ret = connectHelper<ICameraClient,Client>(cameraClient, id, CAMERA_HAL_API_VERSION_UNSPECIFIED, 1052 opPackageName, clientUid, API_1, false, false, /*out*/client); 1053 1054 if(ret != NO_ERROR) { 1055 logRejected(id, getCallingPid(), String8(opPackageName), 1056 String8::format("%s (%d)", strerror(-ret), ret)); 1057 return ret; 1058 } 1059 1060 device = client; 1061 return NO_ERROR; 1062} 1063 1064status_t CameraService::connectLegacy( 1065 const sp<ICameraClient>& cameraClient, 1066 int cameraId, int halVersion, 1067 const String16& opPackageName, 1068 int clientUid, 1069 /*out*/ 1070 sp<ICamera>& device) { 1071 1072 const status_t result = checkCameraAccess(opPackageName); 1073 if (result != NO_ERROR) { 1074 return result; 1075 } 1076 1077 String8 id = String8::format("%d", cameraId); 1078 int apiVersion = mModule->getModuleApiVersion(); 1079 if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED && 1080 apiVersion < CAMERA_MODULE_API_VERSION_2_3) { 1081 /* 1082 * Either the HAL version is unspecified in which case this just creates 1083 * a camera client selected by the latest device version, or 1084 * it's a particular version in which case the HAL must supported 1085 * the open_legacy call 1086 */ 1087 ALOGE("%s: camera HAL module version %x doesn't support connecting to legacy HAL devices!", 1088 __FUNCTION__, apiVersion); 1089 logRejected(id, getCallingPid(), String8(opPackageName), 1090 String8("HAL module version doesn't support legacy HAL connections")); 1091 return INVALID_OPERATION; 1092 } 1093 1094 status_t ret = NO_ERROR; 1095 sp<Client> client = nullptr; 1096 ret = connectHelper<ICameraClient,Client>(cameraClient, id, halVersion, opPackageName, 1097 clientUid, API_1, true, false, /*out*/client); 1098 1099 if(ret != NO_ERROR) { 1100 logRejected(id, getCallingPid(), String8(opPackageName), 1101 String8::format("%s (%d)", strerror(-ret), ret)); 1102 return ret; 1103 } 1104 1105 device = client; 1106 return NO_ERROR; 1107} 1108 1109status_t CameraService::connectDevice( 1110 const sp<ICameraDeviceCallbacks>& cameraCb, 1111 int cameraId, 1112 const String16& opPackageName, 1113 int clientUid, 1114 /*out*/ 1115 sp<ICameraDeviceUser>& device) { 1116 1117 const status_t result = checkCameraAccess(opPackageName); 1118 if (result != NO_ERROR) { 1119 return result; 1120 } 1121 1122 status_t ret = NO_ERROR; 1123 String8 id = String8::format("%d", cameraId); 1124 sp<CameraDeviceClient> client = nullptr; 1125 ret = connectHelper<ICameraDeviceCallbacks,CameraDeviceClient>(cameraCb, id, 1126 CAMERA_HAL_API_VERSION_UNSPECIFIED, opPackageName, clientUid, API_2, false, false, 1127 /*out*/client); 1128 1129 if(ret != NO_ERROR) { 1130 logRejected(id, getCallingPid(), String8(opPackageName), 1131 String8::format("%s (%d)", strerror(-ret), ret)); 1132 return ret; 1133 } 1134 1135 device = client; 1136 return NO_ERROR; 1137} 1138 1139status_t CameraService::setTorchMode(const String16& cameraId, bool enabled, 1140 const sp<IBinder>& clientBinder) { 1141 if (enabled && clientBinder == NULL) { 1142 ALOGE("%s: torch client binder is NULL", __FUNCTION__); 1143 return -EINVAL; 1144 } 1145 1146 String8 id = String8(cameraId.string()); 1147 1148 // verify id is valid. 1149 auto state = getCameraState(id); 1150 if (state == nullptr) { 1151 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1152 return -EINVAL; 1153 } 1154 1155 ICameraServiceListener::Status cameraStatus = state->getStatus(); 1156 if (cameraStatus != ICameraServiceListener::STATUS_PRESENT && 1157 cameraStatus != ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1158 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1159 return -EINVAL; 1160 } 1161 1162 { 1163 Mutex::Autolock al(mTorchStatusMutex); 1164 ICameraServiceListener::TorchStatus status; 1165 status_t res = getTorchStatusLocked(id, &status); 1166 if (res) { 1167 ALOGE("%s: getting current torch status failed for camera %s", 1168 __FUNCTION__, id.string()); 1169 return -EINVAL; 1170 } 1171 1172 if (status == ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE) { 1173 if (cameraStatus == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1174 ALOGE("%s: torch mode of camera %s is not available because " 1175 "camera is in use", __FUNCTION__, id.string()); 1176 return -EBUSY; 1177 } else { 1178 ALOGE("%s: torch mode of camera %s is not available due to " 1179 "insufficient resources", __FUNCTION__, id.string()); 1180 return -EUSERS; 1181 } 1182 } 1183 } 1184 1185 status_t res = mFlashlight->setTorchMode(id, enabled); 1186 if (res) { 1187 ALOGE("%s: setting torch mode of camera %s to %d failed. %s (%d)", 1188 __FUNCTION__, id.string(), enabled, strerror(-res), res); 1189 return res; 1190 } 1191 1192 { 1193 // update the link to client's death 1194 Mutex::Autolock al(mTorchClientMapMutex); 1195 ssize_t index = mTorchClientMap.indexOfKey(id); 1196 if (enabled) { 1197 if (index == NAME_NOT_FOUND) { 1198 mTorchClientMap.add(id, clientBinder); 1199 } else { 1200 const sp<IBinder> oldBinder = mTorchClientMap.valueAt(index); 1201 oldBinder->unlinkToDeath(this); 1202 1203 mTorchClientMap.replaceValueAt(index, clientBinder); 1204 } 1205 clientBinder->linkToDeath(this); 1206 } else if (index != NAME_NOT_FOUND) { 1207 sp<IBinder> oldBinder = mTorchClientMap.valueAt(index); 1208 oldBinder->unlinkToDeath(this); 1209 } 1210 } 1211 1212 return OK; 1213} 1214 1215void CameraService::notifySystemEvent(int eventId, int arg0) { 1216 switch(eventId) { 1217 case ICameraService::USER_SWITCHED: { 1218 doUserSwitch(/*newUserId*/arg0); 1219 break; 1220 } 1221 case ICameraService::NO_EVENT: 1222 default: { 1223 ALOGW("%s: Received invalid system event from system_server: %d", __FUNCTION__, 1224 eventId); 1225 break; 1226 } 1227 } 1228} 1229 1230status_t CameraService::addListener( 1231 const sp<ICameraServiceListener>& listener) { 1232 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); 1233 1234 if (listener == 0) { 1235 ALOGE("%s: Listener must not be null", __FUNCTION__); 1236 return BAD_VALUE; 1237 } 1238 1239 Mutex::Autolock lock(mServiceLock); 1240 1241 { 1242 Mutex::Autolock lock(mStatusListenerLock); 1243 for (auto& it : mListenerList) { 1244 if (IInterface::asBinder(it) == IInterface::asBinder(listener)) { 1245 ALOGW("%s: Tried to add listener %p which was already subscribed", 1246 __FUNCTION__, listener.get()); 1247 return ALREADY_EXISTS; 1248 } 1249 } 1250 1251 mListenerList.push_back(listener); 1252 } 1253 1254 1255 /* Immediately signal current status to this listener only */ 1256 { 1257 Mutex::Autolock lock(mCameraStatesLock); 1258 for (auto& i : mCameraStates) { 1259 // TODO: Update binder to use String16 for camera IDs and remove; 1260 int id = cameraIdToInt(i.first); 1261 if (id == -1) continue; 1262 1263 listener->onStatusChanged(i.second->getStatus(), id); 1264 } 1265 } 1266 1267 /* Immediately signal current torch status to this listener only */ 1268 { 1269 Mutex::Autolock al(mTorchStatusMutex); 1270 for (size_t i = 0; i < mTorchStatusMap.size(); i++ ) { 1271 String16 id = String16(mTorchStatusMap.keyAt(i).string()); 1272 listener->onTorchStatusChanged(mTorchStatusMap.valueAt(i), id); 1273 } 1274 } 1275 1276 return OK; 1277} 1278 1279status_t CameraService::removeListener(const sp<ICameraServiceListener>& listener) { 1280 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); 1281 1282 if (listener == 0) { 1283 ALOGE("%s: Listener must not be null", __FUNCTION__); 1284 return BAD_VALUE; 1285 } 1286 1287 Mutex::Autolock lock(mServiceLock); 1288 1289 { 1290 Mutex::Autolock lock(mStatusListenerLock); 1291 for (auto it = mListenerList.begin(); it != mListenerList.end(); it++) { 1292 if (IInterface::asBinder(*it) == IInterface::asBinder(listener)) { 1293 mListenerList.erase(it); 1294 return OK; 1295 } 1296 } 1297 } 1298 1299 ALOGW("%s: Tried to remove a listener %p which was not subscribed", 1300 __FUNCTION__, listener.get()); 1301 1302 return BAD_VALUE; 1303} 1304 1305status_t CameraService::getLegacyParameters(int cameraId, /*out*/String16* parameters) { 1306 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1307 1308 if (parameters == NULL) { 1309 ALOGE("%s: parameters must not be null", __FUNCTION__); 1310 return BAD_VALUE; 1311 } 1312 1313 status_t ret = 0; 1314 1315 CameraParameters shimParams; 1316 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 1317 // Error logged by caller 1318 return ret; 1319 } 1320 1321 String8 shimParamsString8 = shimParams.flatten(); 1322 String16 shimParamsString16 = String16(shimParamsString8); 1323 1324 *parameters = shimParamsString16; 1325 1326 return OK; 1327} 1328 1329status_t CameraService::supportsCameraApi(int cameraId, int apiVersion) { 1330 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1331 1332 switch (apiVersion) { 1333 case API_VERSION_1: 1334 case API_VERSION_2: 1335 break; 1336 default: 1337 ALOGE("%s: Bad API version %d", __FUNCTION__, apiVersion); 1338 return BAD_VALUE; 1339 } 1340 1341 int facing = -1; 1342 int deviceVersion = getDeviceVersion(cameraId, &facing); 1343 1344 switch(deviceVersion) { 1345 case CAMERA_DEVICE_API_VERSION_1_0: 1346 case CAMERA_DEVICE_API_VERSION_2_0: 1347 case CAMERA_DEVICE_API_VERSION_2_1: 1348 case CAMERA_DEVICE_API_VERSION_3_0: 1349 case CAMERA_DEVICE_API_VERSION_3_1: 1350 if (apiVersion == API_VERSION_2) { 1351 ALOGV("%s: Camera id %d uses HAL prior to HAL3.2, doesn't support api2 without shim", 1352 __FUNCTION__, cameraId); 1353 return -EOPNOTSUPP; 1354 } else { // if (apiVersion == API_VERSION_1) { 1355 ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported", 1356 __FUNCTION__, cameraId); 1357 return OK; 1358 } 1359 case CAMERA_DEVICE_API_VERSION_3_2: 1360 case CAMERA_DEVICE_API_VERSION_3_3: 1361 ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly", 1362 __FUNCTION__, cameraId); 1363 return OK; 1364 case -1: 1365 ALOGE("%s: Invalid camera id %d", __FUNCTION__, cameraId); 1366 return BAD_VALUE; 1367 default: 1368 ALOGE("%s: Unknown camera device HAL version: %d", __FUNCTION__, deviceVersion); 1369 return INVALID_OPERATION; 1370 } 1371 1372 return OK; 1373} 1374 1375void CameraService::removeByClient(const BasicClient* client) { 1376 Mutex::Autolock lock(mServiceLock); 1377 for (auto& i : mActiveClientManager.getAll()) { 1378 auto clientSp = i->getValue(); 1379 if (clientSp.get() == client) { 1380 mActiveClientManager.remove(i); 1381 } 1382 } 1383} 1384 1385bool CameraService::evictClientIdByRemote(const wp<IBinder>& remote) { 1386 const int callingPid = getCallingPid(); 1387 const int servicePid = getpid(); 1388 bool ret = false; 1389 { 1390 // Acquire mServiceLock and prevent other clients from connecting 1391 std::unique_ptr<AutoConditionLock> lock = 1392 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1393 1394 1395 std::vector<sp<BasicClient>> evicted; 1396 for (auto& i : mActiveClientManager.getAll()) { 1397 auto clientSp = i->getValue(); 1398 if (clientSp.get() == nullptr) { 1399 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1400 mActiveClientManager.remove(i); 1401 continue; 1402 } 1403 if (remote == clientSp->getRemote() && (callingPid == servicePid || 1404 callingPid == clientSp->getClientPid())) { 1405 mActiveClientManager.remove(i); 1406 evicted.push_back(clientSp); 1407 1408 // Notify the client of disconnection 1409 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1410 CaptureResultExtras()); 1411 } 1412 } 1413 1414 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1415 // other clients from connecting in mServiceLockWrapper if held 1416 mServiceLock.unlock(); 1417 1418 // Do not clear caller identity, remote caller should be client proccess 1419 1420 for (auto& i : evicted) { 1421 if (i.get() != nullptr) { 1422 i->disconnect(); 1423 ret = true; 1424 } 1425 } 1426 1427 // Reacquire mServiceLock 1428 mServiceLock.lock(); 1429 1430 } // lock is destroyed, allow further connect calls 1431 1432 return ret; 1433} 1434 1435 1436std::shared_ptr<CameraService::CameraState> CameraService::getCameraState( 1437 const String8& cameraId) const { 1438 std::shared_ptr<CameraState> state; 1439 { 1440 Mutex::Autolock lock(mCameraStatesLock); 1441 auto iter = mCameraStates.find(cameraId); 1442 if (iter != mCameraStates.end()) { 1443 state = iter->second; 1444 } 1445 } 1446 return state; 1447} 1448 1449sp<CameraService::BasicClient> CameraService::removeClientLocked(const String8& cameraId) { 1450 // Remove from active clients list 1451 auto clientDescriptorPtr = mActiveClientManager.remove(cameraId); 1452 if (clientDescriptorPtr == nullptr) { 1453 ALOGW("%s: Could not evict client, no client for camera ID %s", __FUNCTION__, 1454 cameraId.string()); 1455 return sp<BasicClient>{nullptr}; 1456 } 1457 1458 return clientDescriptorPtr->getValue(); 1459} 1460 1461void CameraService::doUserSwitch(int newUserId) { 1462 // Acquire mServiceLock and prevent other clients from connecting 1463 std::unique_ptr<AutoConditionLock> lock = 1464 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1465 1466 if (newUserId <= 0) { 1467 ALOGW("%s: Bad user ID %d given during user switch, resetting to default.", __FUNCTION__, 1468 newUserId); 1469 newUserId = DEFAULT_LAST_USER_ID; 1470 } 1471 1472 logUserSwitch(mLastUserId, newUserId); 1473 1474 mLastUserId = newUserId; 1475 1476 // Current user has switched, evict all current clients. 1477 std::vector<sp<BasicClient>> evicted; 1478 for (auto& i : mActiveClientManager.getAll()) { 1479 auto clientSp = i->getValue(); 1480 1481 if (clientSp.get() == nullptr) { 1482 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1483 continue; 1484 } 1485 1486 evicted.push_back(clientSp); 1487 1488 String8 curTime = getFormattedCurrentTime(); 1489 1490 ALOGE("Evicting conflicting client for camera ID %s due to user change", 1491 i->getKey().string()); 1492 1493 // Log the clients evicted 1494 logEvent(String8::format("EVICT device %s client held by package %s (PID %" 1495 PRId32 ", priority %" PRId32 ")\n - Evicted due to user switch.", 1496 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1497 i->getOwnerId(), i->getPriority())); 1498 1499 } 1500 1501 // Do not hold mServiceLock while disconnecting clients, but retain the condition 1502 // blocking other clients from connecting in mServiceLockWrapper if held. 1503 mServiceLock.unlock(); 1504 1505 // Clear caller identity temporarily so client disconnect PID checks work correctly 1506 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1507 1508 for (auto& i : evicted) { 1509 i->disconnect(); 1510 } 1511 1512 IPCThreadState::self()->restoreCallingIdentity(token); 1513 1514 // Reacquire mServiceLock 1515 mServiceLock.lock(); 1516} 1517 1518void CameraService::logEvent(const char* event) { 1519 String8 curTime = getFormattedCurrentTime(); 1520 Mutex::Autolock l(mLogLock); 1521 mEventLog.add(String8::format("%s : %s", curTime.string(), event)); 1522} 1523 1524void CameraService::logDisconnected(const char* cameraId, int clientPid, 1525 const char* opPackageName) { 1526 // Log the clients evicted 1527 logEvent(String8::format("DISCONNECT device %s client for package %s (PID %d)", cameraId, 1528 opPackageName, clientPid)); 1529} 1530 1531void CameraService::logConnected(const char* cameraId, int clientPid, 1532 const char* opPackageName) { 1533 // Log the clients evicted 1534 logEvent(String8::format("CONNECT device %s client for package %s (PID %d)", cameraId, 1535 opPackageName, clientPid)); 1536} 1537 1538void CameraService::logRejected(const char* cameraId, int clientPid, 1539 const char* opPackageName, const char* reason) { 1540 // Log the client rejected 1541 logEvent(String8::format("REJECT device %s client for package %s (PID %d), reason: (%s)", 1542 cameraId, opPackageName, clientPid, reason)); 1543} 1544 1545void CameraService::logUserSwitch(int oldUserId, int newUserId) { 1546 // Log the new and old users 1547 logEvent(String8::format("USER_SWITCH from old user: %d , to new user: %d", oldUserId, 1548 newUserId)); 1549} 1550 1551void CameraService::logDeviceRemoved(const char* cameraId, const char* reason) { 1552 // Log the device removal 1553 logEvent(String8::format("REMOVE device %s, reason: (%s)", cameraId, reason)); 1554} 1555 1556void CameraService::logDeviceAdded(const char* cameraId, const char* reason) { 1557 // Log the device removal 1558 logEvent(String8::format("ADD device %s, reason: (%s)", cameraId, reason)); 1559} 1560 1561void CameraService::logClientDied(int clientPid, const char* reason) { 1562 // Log the device removal 1563 logEvent(String8::format("DIED client(s) with PID %d, reason: (%s)", clientPid, reason)); 1564} 1565 1566void CameraService::logServiceError(const char* msg, int errorCode) { 1567 String8 curTime = getFormattedCurrentTime(); 1568 logEvent(String8::format("SERVICE ERROR: %s : %d (%s)", msg, errorCode, strerror(errorCode))); 1569} 1570 1571status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply, 1572 uint32_t flags) { 1573 1574 const int pid = getCallingPid(); 1575 const int selfPid = getpid(); 1576 1577 // Permission checks 1578 switch (code) { 1579 case BnCameraService::NOTIFY_SYSTEM_EVENT: { 1580 if (pid != selfPid) { 1581 // Ensure we're being called by system_server, or similar process with 1582 // permissions to notify the camera service about system events 1583 if (!checkCallingPermission( 1584 String16("android.permission.CAMERA_SEND_SYSTEM_EVENTS"))) { 1585 const int uid = getCallingUid(); 1586 ALOGE("Permission Denial: cannot send updates to camera service about system" 1587 " events from pid=%d, uid=%d", pid, uid); 1588 return PERMISSION_DENIED; 1589 } 1590 } 1591 break; 1592 } 1593 } 1594 1595 return BnCameraService::onTransact(code, data, reply, flags); 1596} 1597 1598status_t CameraService::checkCameraAccess(const String16& opPackageName) { 1599 const int pid = getCallingPid(); 1600 1601 if (pid == getpid()) { 1602 return NO_ERROR; 1603 } 1604 1605 const int uid = getCallingUid(); 1606 1607 if (!checkCallingPermission(String16("android.permission.CAMERA"))) { 1608 ALOGE("Permission Denial: can't use the camera pid=%d, uid=%d", pid, uid); 1609 return PERMISSION_DENIED; 1610 } 1611 1612 AppOpsManager appOps; 1613 const int32_t result = appOps.noteOp(AppOpsManager::OP_CAMERA, uid, opPackageName); 1614 1615 switch (result) { 1616 case AppOpsManager::MODE_ERRORED: { 1617 ALOGE("App op OP_CAMERA errored: can't use the camera pid=%d, uid=%d", pid, uid); 1618 return PERMISSION_DENIED; 1619 } break; 1620 1621 case AppOpsManager::MODE_IGNORED: { 1622 ALOGE("App op OP_CAMERA ignored: can't use the camera pid=%d, uid=%d", pid, uid); 1623 return INVALID_OPERATION; 1624 } break; 1625 } 1626 1627 return NO_ERROR; 1628} 1629 1630// We share the media players for shutter and recording sound for all clients. 1631// A reference count is kept to determine when we will actually release the 1632// media players. 1633 1634MediaPlayer* CameraService::newMediaPlayer(const char *file) { 1635 MediaPlayer* mp = new MediaPlayer(); 1636 if (mp->setDataSource(NULL /* httpService */, file, NULL) == NO_ERROR) { 1637 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 1638 mp->prepare(); 1639 } else { 1640 ALOGE("Failed to load CameraService sounds: %s", file); 1641 return NULL; 1642 } 1643 return mp; 1644} 1645 1646void CameraService::loadSound() { 1647 Mutex::Autolock lock(mSoundLock); 1648 LOG1("CameraService::loadSound ref=%d", mSoundRef); 1649 if (mSoundRef++) return; 1650 1651 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 1652 mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 1653} 1654 1655void CameraService::releaseSound() { 1656 Mutex::Autolock lock(mSoundLock); 1657 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 1658 if (--mSoundRef) return; 1659 1660 for (int i = 0; i < NUM_SOUNDS; i++) { 1661 if (mSoundPlayer[i] != 0) { 1662 mSoundPlayer[i]->disconnect(); 1663 mSoundPlayer[i].clear(); 1664 } 1665 } 1666} 1667 1668void CameraService::playSound(sound_kind kind) { 1669 LOG1("playSound(%d)", kind); 1670 Mutex::Autolock lock(mSoundLock); 1671 sp<MediaPlayer> player = mSoundPlayer[kind]; 1672 if (player != 0) { 1673 player->seekTo(0); 1674 player->start(); 1675 } 1676} 1677 1678// ---------------------------------------------------------------------------- 1679 1680CameraService::Client::Client(const sp<CameraService>& cameraService, 1681 const sp<ICameraClient>& cameraClient, 1682 const String16& opPackageName, 1683 int cameraId, int cameraFacing, 1684 int clientPid, uid_t clientUid, 1685 int servicePid) : 1686 CameraService::BasicClient(cameraService, 1687 IInterface::asBinder(cameraClient), 1688 opPackageName, 1689 cameraId, cameraFacing, 1690 clientPid, clientUid, 1691 servicePid) 1692{ 1693 int callingPid = getCallingPid(); 1694 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 1695 1696 mRemoteCallback = cameraClient; 1697 1698 cameraService->loadSound(); 1699 1700 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 1701} 1702 1703// tear down the client 1704CameraService::Client::~Client() { 1705 ALOGV("~Client"); 1706 mDestructionStarted = true; 1707 1708 mCameraService->releaseSound(); 1709 // unconditionally disconnect. function is idempotent 1710 Client::disconnect(); 1711} 1712 1713CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 1714 const sp<IBinder>& remoteCallback, 1715 const String16& opPackageName, 1716 int cameraId, int cameraFacing, 1717 int clientPid, uid_t clientUid, 1718 int servicePid): 1719 mOpPackageName(opPackageName), mDisconnected(false) 1720{ 1721 mCameraService = cameraService; 1722 mRemoteBinder = remoteCallback; 1723 mCameraId = cameraId; 1724 mCameraFacing = cameraFacing; 1725 mClientPid = clientPid; 1726 mClientUid = clientUid; 1727 mServicePid = servicePid; 1728 mOpsActive = false; 1729 mDestructionStarted = false; 1730} 1731 1732CameraService::BasicClient::~BasicClient() { 1733 ALOGV("~BasicClient"); 1734 mDestructionStarted = true; 1735} 1736 1737void CameraService::BasicClient::disconnect() { 1738 if (mDisconnected) { 1739 ALOGE("%s: Disconnect called on already disconnected client for device %d", __FUNCTION__, 1740 mCameraId); 1741 return; 1742 } 1743 mDisconnected = true;; 1744 1745 mCameraService->removeByClient(this); 1746 mCameraService->logDisconnected(String8::format("%d", mCameraId), mClientPid, 1747 String8(mOpPackageName)); 1748 1749 sp<IBinder> remote = getRemote(); 1750 if (remote != nullptr) { 1751 remote->unlinkToDeath(mCameraService); 1752 } 1753 1754 finishCameraOps(); 1755 ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid); 1756 1757 // client shouldn't be able to call into us anymore 1758 mClientPid = 0; 1759} 1760 1761String16 CameraService::BasicClient::getPackageName() const { 1762 return mOpPackageName; 1763} 1764 1765 1766int CameraService::BasicClient::getClientPid() const { 1767 return mClientPid; 1768} 1769 1770bool CameraService::BasicClient::canCastToApiClient(apiLevel level) const { 1771 // Defaults to API2. 1772 return level == API_2; 1773} 1774 1775status_t CameraService::BasicClient::startCameraOps() { 1776 int32_t res; 1777 // Notify app ops that the camera is not available 1778 mOpsCallback = new OpsCallback(this); 1779 1780 { 1781 ALOGV("%s: Start camera ops, package name = %s, client UID = %d", 1782 __FUNCTION__, String8(mOpPackageName).string(), mClientUid); 1783 } 1784 1785 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 1786 mOpPackageName, mOpsCallback); 1787 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 1788 mClientUid, mOpPackageName); 1789 1790 if (res != AppOpsManager::MODE_ALLOWED) { 1791 ALOGI("Camera %d: Access for \"%s\" has been revoked", 1792 mCameraId, String8(mOpPackageName).string()); 1793 return PERMISSION_DENIED; 1794 } 1795 1796 mOpsActive = true; 1797 1798 // Transition device availability listeners from PRESENT -> NOT_AVAILABLE 1799 mCameraService->updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 1800 String8::format("%d", mCameraId)); 1801 1802 return OK; 1803} 1804 1805status_t CameraService::BasicClient::finishCameraOps() { 1806 // Check if startCameraOps succeeded, and if so, finish the camera op 1807 if (mOpsActive) { 1808 // Notify app ops that the camera is available again 1809 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 1810 mOpPackageName); 1811 mOpsActive = false; 1812 1813 auto rejected = {ICameraServiceListener::STATUS_NOT_PRESENT, 1814 ICameraServiceListener::STATUS_ENUMERATING}; 1815 1816 // Transition to PRESENT if the camera is not in either of the rejected states 1817 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, 1818 String8::format("%d", mCameraId), rejected); 1819 1820 // Notify flashlight that a camera device is closed. 1821 mCameraService->mFlashlight->deviceClosed( 1822 String8::format("%d", mCameraId)); 1823 } 1824 // Always stop watching, even if no camera op is active 1825 if (mOpsCallback != NULL) { 1826 mAppOpsManager.stopWatchingMode(mOpsCallback); 1827 } 1828 mOpsCallback.clear(); 1829 1830 return OK; 1831} 1832 1833void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 1834 String8 name(packageName); 1835 String8 myName(mOpPackageName); 1836 1837 if (op != AppOpsManager::OP_CAMERA) { 1838 ALOGW("Unexpected app ops notification received: %d", op); 1839 return; 1840 } 1841 1842 int32_t res; 1843 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 1844 mClientUid, mOpPackageName); 1845 ALOGV("checkOp returns: %d, %s ", res, 1846 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 1847 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 1848 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 1849 "UNKNOWN"); 1850 1851 if (res != AppOpsManager::MODE_ALLOWED) { 1852 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 1853 myName.string()); 1854 // Reset the client PID to allow server-initiated disconnect, 1855 // and to prevent further calls by client. 1856 mClientPid = getCallingPid(); 1857 CaptureResultExtras resultExtras; // a dummy result (invalid) 1858 notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE, resultExtras); 1859 disconnect(); 1860 } 1861} 1862 1863// ---------------------------------------------------------------------------- 1864 1865// Provide client strong pointer for callbacks. 1866sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) { 1867 String8 cameraId = String8::format("%d", (int)(intptr_t) user); 1868 auto clientDescriptor = gCameraService->mActiveClientManager.get(cameraId); 1869 if (clientDescriptor != nullptr) { 1870 return sp<Client>{ 1871 static_cast<Client*>(clientDescriptor->getValue().get())}; 1872 } 1873 return sp<Client>{nullptr}; 1874} 1875 1876void CameraService::Client::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 1877 const CaptureResultExtras& resultExtras) { 1878 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 1879} 1880 1881// NOTE: function is idempotent 1882void CameraService::Client::disconnect() { 1883 ALOGV("Client::disconnect"); 1884 BasicClient::disconnect(); 1885} 1886 1887bool CameraService::Client::canCastToApiClient(apiLevel level) const { 1888 return level == API_1; 1889} 1890 1891CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 1892 mClient(client) { 1893} 1894 1895void CameraService::Client::OpsCallback::opChanged(int32_t op, 1896 const String16& packageName) { 1897 sp<BasicClient> client = mClient.promote(); 1898 if (client != NULL) { 1899 client->opChanged(op, packageName); 1900 } 1901} 1902 1903// ---------------------------------------------------------------------------- 1904// CameraState 1905// ---------------------------------------------------------------------------- 1906 1907CameraService::CameraState::CameraState(const String8& id, int cost, 1908 const std::set<String8>& conflicting) : mId(id), 1909 mStatus(ICameraServiceListener::STATUS_PRESENT), mCost(cost), mConflicting(conflicting) {} 1910 1911CameraService::CameraState::~CameraState() {} 1912 1913ICameraServiceListener::Status CameraService::CameraState::getStatus() const { 1914 Mutex::Autolock lock(mStatusLock); 1915 return mStatus; 1916} 1917 1918CameraParameters CameraService::CameraState::getShimParams() const { 1919 return mShimParams; 1920} 1921 1922void CameraService::CameraState::setShimParams(const CameraParameters& params) { 1923 mShimParams = params; 1924} 1925 1926int CameraService::CameraState::getCost() const { 1927 return mCost; 1928} 1929 1930std::set<String8> CameraService::CameraState::getConflicting() const { 1931 return mConflicting; 1932} 1933 1934String8 CameraService::CameraState::getId() const { 1935 return mId; 1936} 1937 1938// ---------------------------------------------------------------------------- 1939// CameraClientManager 1940// ---------------------------------------------------------------------------- 1941 1942CameraService::CameraClientManager::~CameraClientManager() {} 1943 1944sp<CameraService::BasicClient> CameraService::CameraClientManager::getCameraClient( 1945 const String8& id) const { 1946 auto descriptor = get(id); 1947 if (descriptor == nullptr) { 1948 return sp<BasicClient>{nullptr}; 1949 } 1950 return descriptor->getValue(); 1951} 1952 1953String8 CameraService::CameraClientManager::toString() const { 1954 auto all = getAll(); 1955 String8 ret("["); 1956 bool hasAny = false; 1957 for (auto& i : all) { 1958 hasAny = true; 1959 String8 key = i->getKey(); 1960 int32_t cost = i->getCost(); 1961 int32_t pid = i->getOwnerId(); 1962 int32_t priority = i->getPriority(); 1963 auto conflicting = i->getConflicting(); 1964 auto clientSp = i->getValue(); 1965 String8 packageName; 1966 if (clientSp.get() != nullptr) { 1967 packageName = String8{clientSp->getPackageName()}; 1968 } 1969 ret.appendFormat("\n(Camera ID: %s, Cost: %" PRId32 ", PID: %" PRId32 ", Priority: %" 1970 PRId32 ", ", key.string(), cost, pid, priority); 1971 1972 if (packageName.size() != 0) { 1973 ret.appendFormat("Client Package Name: %s", packageName.string()); 1974 } 1975 1976 ret.append(", Conflicting Client Devices: {"); 1977 for (auto& j : conflicting) { 1978 ret.appendFormat("%s, ", j.string()); 1979 } 1980 ret.append("})"); 1981 } 1982 if (hasAny) ret.append("\n"); 1983 ret.append("]\n"); 1984 return ret; 1985} 1986 1987CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 1988 const String8& key, const sp<BasicClient>& value, int32_t cost, 1989 const std::set<String8>& conflictingKeys, int32_t priority, int32_t ownerId) { 1990 1991 return std::make_shared<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>( 1992 key, value, cost, conflictingKeys, priority, ownerId); 1993} 1994 1995CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 1996 const sp<BasicClient>& value, const CameraService::DescriptorPtr& partial) { 1997 return makeClientDescriptor(partial->getKey(), value, partial->getCost(), 1998 partial->getConflicting(), partial->getPriority(), partial->getOwnerId()); 1999} 2000 2001// ---------------------------------------------------------------------------- 2002 2003static const int kDumpLockRetries = 50; 2004static const int kDumpLockSleep = 60000; 2005 2006static bool tryLock(Mutex& mutex) 2007{ 2008 bool locked = false; 2009 for (int i = 0; i < kDumpLockRetries; ++i) { 2010 if (mutex.tryLock() == NO_ERROR) { 2011 locked = true; 2012 break; 2013 } 2014 usleep(kDumpLockSleep); 2015 } 2016 return locked; 2017} 2018 2019status_t CameraService::dump(int fd, const Vector<String16>& args) { 2020 String8 result("Dump of the Camera Service:\n"); 2021 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 2022 result.appendFormat("Permission Denial: " 2023 "can't dump CameraService from pid=%d, uid=%d\n", 2024 getCallingPid(), 2025 getCallingUid()); 2026 write(fd, result.string(), result.size()); 2027 } else { 2028 bool locked = tryLock(mServiceLock); 2029 // failed to lock - CameraService is probably deadlocked 2030 if (!locked) { 2031 result.append("CameraService may be deadlocked\n"); 2032 write(fd, result.string(), result.size()); 2033 } 2034 2035 bool hasClient = false; 2036 if (!mModule) { 2037 result = String8::format("No camera module available!\n"); 2038 write(fd, result.string(), result.size()); 2039 2040 // Dump event log for error information 2041 dumpEventLog(fd); 2042 2043 if (locked) mServiceLock.unlock(); 2044 return NO_ERROR; 2045 } 2046 2047 result = String8::format("Camera module HAL API version: 0x%x\n", mModule->getHalApiVersion()); 2048 result.appendFormat("Camera module API version: 0x%x\n", mModule->getModuleApiVersion()); 2049 result.appendFormat("Camera module name: %s\n", mModule->getModuleName()); 2050 result.appendFormat("Camera module author: %s\n", mModule->getModuleAuthor()); 2051 result.appendFormat("Number of camera devices: %d\n", mNumberOfCameras); 2052 String8 activeClientString = mActiveClientManager.toString(); 2053 result.appendFormat("Active Camera Clients:\n%s", activeClientString.string()); 2054 2055 sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 2056 if (desc == NULL) { 2057 result.appendFormat("Vendor tags left unimplemented.\n"); 2058 } else { 2059 result.appendFormat("Vendor tag definitions:\n"); 2060 } 2061 2062 write(fd, result.string(), result.size()); 2063 2064 if (desc != NULL) { 2065 desc->dump(fd, /*verbosity*/2, /*indentation*/4); 2066 } 2067 2068 dumpEventLog(fd); 2069 2070 bool stateLocked = tryLock(mCameraStatesLock); 2071 if (!stateLocked) { 2072 result = String8::format("CameraStates in use, may be deadlocked\n"); 2073 write(fd, result.string(), result.size()); 2074 } 2075 2076 for (auto& state : mCameraStates) { 2077 String8 cameraId = state.first; 2078 result = String8::format("Camera %s information:\n", cameraId.string()); 2079 camera_info info; 2080 2081 // TODO: Change getCameraInfo + HAL to use String cameraIds 2082 status_t rc = mModule->getCameraInfo(cameraIdToInt(cameraId), &info); 2083 if (rc != OK) { 2084 result.appendFormat(" Error reading static information!\n"); 2085 write(fd, result.string(), result.size()); 2086 } else { 2087 result.appendFormat(" Facing: %s\n", 2088 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 2089 result.appendFormat(" Orientation: %d\n", info.orientation); 2090 int deviceVersion; 2091 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0) { 2092 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 2093 } else { 2094 deviceVersion = info.device_version; 2095 } 2096 2097 auto conflicting = state.second->getConflicting(); 2098 result.appendFormat(" Resource Cost: %d\n", state.second->getCost()); 2099 result.appendFormat(" Conflicting Devices:"); 2100 for (auto& id : conflicting) { 2101 result.appendFormat(" %s", cameraId.string()); 2102 } 2103 if (conflicting.size() == 0) { 2104 result.appendFormat(" NONE"); 2105 } 2106 result.appendFormat("\n"); 2107 2108 result.appendFormat(" Device version: %#x\n", deviceVersion); 2109 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { 2110 result.appendFormat(" Device static metadata:\n"); 2111 write(fd, result.string(), result.size()); 2112 dump_indented_camera_metadata(info.static_camera_characteristics, 2113 fd, /*verbosity*/2, /*indentation*/4); 2114 } else { 2115 write(fd, result.string(), result.size()); 2116 } 2117 2118 CameraParameters p = state.second->getShimParams(); 2119 if (!p.isEmpty()) { 2120 result = String8::format(" Camera1 API shim is using parameters:\n "); 2121 write(fd, result.string(), result.size()); 2122 p.dump(fd, args); 2123 } 2124 } 2125 2126 auto clientDescriptor = mActiveClientManager.get(cameraId); 2127 if (clientDescriptor == nullptr) { 2128 result = String8::format(" Device %s is closed, no client instance\n", 2129 cameraId.string()); 2130 write(fd, result.string(), result.size()); 2131 continue; 2132 } 2133 hasClient = true; 2134 result = String8::format(" Device %s is open. Client instance dump:\n\n", 2135 cameraId.string()); 2136 result.appendFormat("Client priority level: %d\n", clientDescriptor->getPriority()); 2137 result.appendFormat("Client PID: %d\n", clientDescriptor->getOwnerId()); 2138 2139 auto client = clientDescriptor->getValue(); 2140 result.appendFormat("Client package: %s\n", 2141 String8(client->getPackageName()).string()); 2142 write(fd, result.string(), result.size()); 2143 2144 client->dump(fd, args); 2145 } 2146 2147 if (stateLocked) mCameraStatesLock.unlock(); 2148 2149 if (!hasClient) { 2150 result = String8::format("\nNo active camera clients yet.\n"); 2151 write(fd, result.string(), result.size()); 2152 } 2153 2154 if (locked) mServiceLock.unlock(); 2155 2156 // Dump camera traces if there were any 2157 write(fd, "\n", 1); 2158 camera3::CameraTraces::dump(fd, args); 2159 2160 // change logging level 2161 int n = args.size(); 2162 for (int i = 0; i + 1 < n; i++) { 2163 String16 verboseOption("-v"); 2164 if (args[i] == verboseOption) { 2165 String8 levelStr(args[i+1]); 2166 int level = atoi(levelStr.string()); 2167 result = String8::format("\nSetting log level to %d.\n", level); 2168 setLogLevel(level); 2169 write(fd, result.string(), result.size()); 2170 } 2171 } 2172 } 2173 return NO_ERROR; 2174} 2175 2176void CameraService::dumpEventLog(int fd) { 2177 String8 result = String8("\nPrior client events (most recent at top):\n"); 2178 2179 Mutex::Autolock l(mLogLock); 2180 for (const auto& msg : mEventLog) { 2181 result.appendFormat(" %s\n", msg.string()); 2182 } 2183 2184 if (mEventLog.size() == DEFAULT_EVENT_LOG_LENGTH) { 2185 result.append(" ...\n"); 2186 } else if (mEventLog.size() == 0) { 2187 result.append(" [no events yet]\n"); 2188 } 2189 result.append("\n"); 2190 2191 write(fd, result.string(), result.size()); 2192} 2193 2194void CameraService::handleTorchClientBinderDied(const wp<IBinder> &who) { 2195 Mutex::Autolock al(mTorchClientMapMutex); 2196 for (size_t i = 0; i < mTorchClientMap.size(); i++) { 2197 if (mTorchClientMap[i] == who) { 2198 // turn off the torch mode that was turned on by dead client 2199 String8 cameraId = mTorchClientMap.keyAt(i); 2200 status_t res = mFlashlight->setTorchMode(cameraId, false); 2201 if (res) { 2202 ALOGE("%s: torch client died but couldn't turn off torch: " 2203 "%s (%d)", __FUNCTION__, strerror(-res), res); 2204 return; 2205 } 2206 mTorchClientMap.removeItemsAt(i); 2207 break; 2208 } 2209 } 2210} 2211 2212/*virtual*/void CameraService::binderDied(const wp<IBinder> &who) { 2213 2214 /** 2215 * While tempting to promote the wp<IBinder> into a sp, it's actually not supported by the 2216 * binder driver 2217 */ 2218 2219 logClientDied(getCallingPid(), String8("Binder died unexpectedly")); 2220 2221 // check torch client 2222 handleTorchClientBinderDied(who); 2223 2224 // check camera device client 2225 if(!evictClientIdByRemote(who)) { 2226 ALOGV("%s: Java client's binder death already cleaned up (normal case)", __FUNCTION__); 2227 return; 2228 } 2229 2230 ALOGE("%s: Java client's binder died, removing it from the list of active clients", 2231 __FUNCTION__); 2232} 2233 2234void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId) { 2235 updateStatus(status, cameraId, {}); 2236} 2237 2238void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId, 2239 std::initializer_list<ICameraServiceListener::Status> rejectSourceStates) { 2240 // Do not lock mServiceLock here or can get into a deadlock from 2241 // connect() -> disconnect -> updateStatus 2242 2243 auto state = getCameraState(cameraId); 2244 2245 if (state == nullptr) { 2246 ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__, 2247 cameraId.string()); 2248 return; 2249 } 2250 2251 // Update the status for this camera state, then send the onStatusChangedCallbacks to each 2252 // of the listeners with both the mStatusStatus and mStatusListenerLock held 2253 state->updateStatus(status, cameraId, rejectSourceStates, [this] 2254 (const String8& cameraId, ICameraServiceListener::Status status) { 2255 2256 if (status != ICameraServiceListener::STATUS_ENUMERATING) { 2257 // Update torch status if it has a flash unit. 2258 Mutex::Autolock al(mTorchStatusMutex); 2259 ICameraServiceListener::TorchStatus torchStatus; 2260 if (getTorchStatusLocked(cameraId, &torchStatus) != 2261 NAME_NOT_FOUND) { 2262 ICameraServiceListener::TorchStatus newTorchStatus = 2263 status == ICameraServiceListener::STATUS_PRESENT ? 2264 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF : 2265 ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 2266 if (torchStatus != newTorchStatus) { 2267 onTorchStatusChangedLocked(cameraId, newTorchStatus); 2268 } 2269 } 2270 } 2271 2272 Mutex::Autolock lock(mStatusListenerLock); 2273 2274 for (auto& listener : mListenerList) { 2275 // TODO: Refactor status listeners to use strings for Camera IDs and remove this. 2276 int id = cameraIdToInt(cameraId); 2277 if (id != -1) listener->onStatusChanged(status, id); 2278 } 2279 }); 2280} 2281 2282status_t CameraService::getTorchStatusLocked( 2283 const String8& cameraId, 2284 ICameraServiceListener::TorchStatus *status) const { 2285 if (!status) { 2286 return BAD_VALUE; 2287 } 2288 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2289 if (index == NAME_NOT_FOUND) { 2290 // invalid camera ID or the camera doesn't have a flash unit 2291 return NAME_NOT_FOUND; 2292 } 2293 2294 *status = mTorchStatusMap.valueAt(index); 2295 return OK; 2296} 2297 2298status_t CameraService::setTorchStatusLocked(const String8& cameraId, 2299 ICameraServiceListener::TorchStatus status) { 2300 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2301 if (index == NAME_NOT_FOUND) { 2302 return BAD_VALUE; 2303 } 2304 ICameraServiceListener::TorchStatus& item = 2305 mTorchStatusMap.editValueAt(index); 2306 item = status; 2307 2308 return OK; 2309} 2310 2311}; // namespace android 2312