CameraService.cpp revision b10cdadf0fb945e23ca77008d4af76584bd0e39a
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 <stdio.h> 21#include <string.h> 22#include <sys/types.h> 23#include <pthread.h> 24 25#include <binder/AppOpsManager.h> 26#include <binder/IPCThreadState.h> 27#include <binder/IServiceManager.h> 28#include <binder/MemoryBase.h> 29#include <binder/MemoryHeapBase.h> 30#include <cutils/atomic.h> 31#include <cutils/properties.h> 32#include <gui/Surface.h> 33#include <hardware/hardware.h> 34#include <media/AudioSystem.h> 35#include <media/IMediaHTTPService.h> 36#include <media/mediaplayer.h> 37#include <utils/Errors.h> 38#include <utils/Log.h> 39#include <utils/String16.h> 40#include <utils/Trace.h> 41#include <system/camera_vendor_tags.h> 42#include <system/camera_metadata.h> 43#include <system/camera.h> 44 45#include "CameraService.h" 46#include "api1/CameraClient.h" 47#include "api1/Camera2Client.h" 48#include "api_pro/ProCamera2Client.h" 49#include "api2/CameraDeviceClient.h" 50#include "utils/CameraTraces.h" 51#include "CameraDeviceFactory.h" 52 53namespace android { 54 55// ---------------------------------------------------------------------------- 56// Logging support -- this is for debugging only 57// Use "adb shell dumpsys media.camera -v 1" to change it. 58volatile int32_t gLogLevel = 0; 59 60#define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__); 61#define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__); 62 63static void setLogLevel(int level) { 64 android_atomic_write(level, &gLogLevel); 65} 66 67// ---------------------------------------------------------------------------- 68 69static int getCallingPid() { 70 return IPCThreadState::self()->getCallingPid(); 71} 72 73static int getCallingUid() { 74 return IPCThreadState::self()->getCallingUid(); 75} 76 77extern "C" { 78static void camera_device_status_change( 79 const struct camera_module_callbacks* callbacks, 80 int camera_id, 81 int new_status) { 82 sp<CameraService> cs = const_cast<CameraService*>( 83 static_cast<const CameraService*>(callbacks)); 84 85 cs->onDeviceStatusChanged( 86 camera_id, 87 new_status); 88} 89} // extern "C" 90 91// ---------------------------------------------------------------------------- 92 93// This is ugly and only safe if we never re-create the CameraService, but 94// should be ok for now. 95static CameraService *gCameraService; 96 97CameraService::CameraService() 98 :mSoundRef(0), mModule(0) 99{ 100 ALOGI("CameraService started (pid=%d)", getpid()); 101 gCameraService = this; 102 103 for (size_t i = 0; i < MAX_CAMERAS; ++i) { 104 mStatusList[i] = ICameraServiceListener::STATUS_PRESENT; 105 } 106 107 this->camera_device_status_change = android::camera_device_status_change; 108} 109 110void CameraService::onFirstRef() 111{ 112 LOG1("CameraService::onFirstRef"); 113 114 BnCameraService::onFirstRef(); 115 116 if (hw_get_module(CAMERA_HARDWARE_MODULE_ID, 117 (const hw_module_t **)&mModule) < 0) { 118 ALOGE("Could not load camera HAL module"); 119 mNumberOfCameras = 0; 120 } 121 else { 122 ALOGI("Loaded \"%s\" camera module", mModule->common.name); 123 mNumberOfCameras = mModule->get_number_of_cameras(); 124 if (mNumberOfCameras > MAX_CAMERAS) { 125 ALOGE("Number of cameras(%d) > MAX_CAMERAS(%d).", 126 mNumberOfCameras, MAX_CAMERAS); 127 mNumberOfCameras = MAX_CAMERAS; 128 } 129 for (int i = 0; i < mNumberOfCameras; i++) { 130 setCameraFree(i); 131 } 132 133 if (mModule->common.module_api_version >= 134 CAMERA_MODULE_API_VERSION_2_1) { 135 mModule->set_callbacks(this); 136 } 137 138 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 139 140 if (mModule->common.module_api_version >= CAMERA_MODULE_API_VERSION_2_2) { 141 setUpVendorTags(); 142 } 143 144 CameraDeviceFactory::registerService(this); 145 } 146} 147 148CameraService::~CameraService() { 149 for (int i = 0; i < mNumberOfCameras; i++) { 150 if (mBusy[i]) { 151 ALOGE("camera %d is still in use in destructor!", i); 152 } 153 } 154 155 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 156 gCameraService = NULL; 157} 158 159void CameraService::onDeviceStatusChanged(int cameraId, 160 int newStatus) 161{ 162 ALOGI("%s: Status changed for cameraId=%d, newStatus=%d", __FUNCTION__, 163 cameraId, newStatus); 164 165 if (cameraId < 0 || cameraId >= MAX_CAMERAS) { 166 ALOGE("%s: Bad camera ID %d", __FUNCTION__, cameraId); 167 return; 168 } 169 170 if ((int)getStatus(cameraId) == newStatus) { 171 ALOGE("%s: State transition to the same status 0x%x not allowed", 172 __FUNCTION__, (uint32_t)newStatus); 173 return; 174 } 175 176 /* don't do this in updateStatus 177 since it is also called from connect and we could get into a deadlock */ 178 if (newStatus == CAMERA_DEVICE_STATUS_NOT_PRESENT) { 179 Vector<sp<BasicClient> > clientsToDisconnect; 180 { 181 Mutex::Autolock al(mServiceLock); 182 183 /* Remove cached parameters from shim cache */ 184 mShimParams.removeItem(cameraId); 185 186 /* Find all clients that we need to disconnect */ 187 sp<BasicClient> client = mClient[cameraId].promote(); 188 if (client.get() != NULL) { 189 clientsToDisconnect.push_back(client); 190 } 191 192 int i = cameraId; 193 for (size_t j = 0; j < mProClientList[i].size(); ++j) { 194 sp<ProClient> cl = mProClientList[i][j].promote(); 195 if (cl != NULL) { 196 clientsToDisconnect.push_back(cl); 197 } 198 } 199 } 200 201 /* now disconnect them. don't hold the lock 202 or we can get into a deadlock */ 203 204 for (size_t i = 0; i < clientsToDisconnect.size(); ++i) { 205 sp<BasicClient> client = clientsToDisconnect[i]; 206 207 client->disconnect(); 208 /** 209 * The remote app will no longer be able to call methods on the 210 * client since the client PID will be reset to 0 211 */ 212 } 213 214 ALOGV("%s: After unplug, disconnected %zu clients", 215 __FUNCTION__, clientsToDisconnect.size()); 216 } 217 218 updateStatus( 219 static_cast<ICameraServiceListener::Status>(newStatus), cameraId); 220 221} 222 223int32_t CameraService::getNumberOfCameras() { 224 return mNumberOfCameras; 225} 226 227status_t CameraService::getCameraInfo(int cameraId, 228 struct CameraInfo* cameraInfo) { 229 if (!mModule) { 230 return -ENODEV; 231 } 232 233 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 234 return BAD_VALUE; 235 } 236 237 struct camera_info info; 238 status_t rc = mModule->get_camera_info(cameraId, &info); 239 cameraInfo->facing = info.facing; 240 cameraInfo->orientation = info.orientation; 241 return rc; 242} 243 244 245status_t CameraService::generateShimMetadata(int cameraId, /*out*/CameraMetadata* cameraInfo) { 246 status_t ret = OK; 247 struct CameraInfo info; 248 if ((ret = getCameraInfo(cameraId, &info)) != OK) { 249 return ret; 250 } 251 252 CameraMetadata shimInfo; 253 int32_t orientation = static_cast<int32_t>(info.orientation); 254 if ((ret = shimInfo.update(ANDROID_SENSOR_ORIENTATION, &orientation, 1)) != OK) { 255 return ret; 256 } 257 258 uint8_t facing = (info.facing == CAMERA_FACING_FRONT) ? 259 ANDROID_LENS_FACING_FRONT : ANDROID_LENS_FACING_BACK; 260 if ((ret = shimInfo.update(ANDROID_LENS_FACING, &facing, 1)) != OK) { 261 return ret; 262 } 263 264 CameraParameters shimParams; 265 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 266 // Error logged by callee 267 return ret; 268 } 269 270 Vector<Size> sizes; 271 Vector<Size> jpegSizes; 272 Vector<int32_t> formats; 273 const char* supportedPreviewFormats; 274 { 275 shimParams.getSupportedPreviewSizes(/*out*/sizes); 276 shimParams.getSupportedPreviewFormats(/*out*/formats); 277 shimParams.getSupportedPictureSizes(/*out*/jpegSizes); 278 } 279 280 // Always include IMPLEMENTATION_DEFINED 281 formats.add(HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED); 282 283 const size_t INTS_PER_CONFIG = 4; 284 285 // Build available stream configurations metadata 286 size_t streamConfigSize = (sizes.size() * formats.size() + jpegSizes.size()) * INTS_PER_CONFIG; 287 288 Vector<int32_t> streamConfigs; 289 streamConfigs.setCapacity(streamConfigSize); 290 291 for (size_t i = 0; i < formats.size(); ++i) { 292 for (size_t j = 0; j < sizes.size(); ++j) { 293 streamConfigs.add(formats[i]); 294 streamConfigs.add(sizes[j].width); 295 streamConfigs.add(sizes[j].height); 296 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 297 } 298 } 299 300 for (size_t i = 0; i < jpegSizes.size(); ++i) { 301 streamConfigs.add(HAL_PIXEL_FORMAT_BLOB); 302 streamConfigs.add(jpegSizes[i].width); 303 streamConfigs.add(jpegSizes[i].height); 304 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 305 } 306 307 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS, 308 streamConfigs.array(), streamConfigSize)) != OK) { 309 return ret; 310 } 311 312 int64_t fakeMinFrames[0]; 313 // TODO: Fixme, don't fake min frame durations. 314 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS, 315 fakeMinFrames, 0)) != OK) { 316 return ret; 317 } 318 319 int64_t fakeStalls[0]; 320 // TODO: Fixme, don't fake stall durations. 321 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STALL_DURATIONS, 322 fakeStalls, 0)) != OK) { 323 return ret; 324 } 325 326 *cameraInfo = shimInfo; 327 return OK; 328} 329 330status_t CameraService::getCameraCharacteristics(int cameraId, 331 CameraMetadata* cameraInfo) { 332 if (!cameraInfo) { 333 ALOGE("%s: cameraInfo is NULL", __FUNCTION__); 334 return BAD_VALUE; 335 } 336 337 if (!mModule) { 338 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 339 return -ENODEV; 340 } 341 342 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 343 ALOGE("%s: Invalid camera id: %d", __FUNCTION__, cameraId); 344 return BAD_VALUE; 345 } 346 347 int facing; 348 status_t ret = OK; 349 if (mModule->common.module_api_version < CAMERA_MODULE_API_VERSION_2_0 || 350 getDeviceVersion(cameraId, &facing) <= CAMERA_DEVICE_API_VERSION_2_1 ) { 351 /** 352 * Backwards compatibility mode for old HALs: 353 * - Convert CameraInfo into static CameraMetadata properties. 354 * - Retrieve cached CameraParameters for this camera. If none exist, 355 * attempt to open CameraClient and retrieve the CameraParameters. 356 * - Convert cached CameraParameters into static CameraMetadata 357 * properties. 358 */ 359 ALOGI("%s: Switching to HAL1 shim implementation...", __FUNCTION__); 360 361 if ((ret = generateShimMetadata(cameraId, cameraInfo)) != OK) { 362 return ret; 363 } 364 365 } else { 366 /** 367 * Normal HAL 2.1+ codepath. 368 */ 369 struct camera_info info; 370 ret = mModule->get_camera_info(cameraId, &info); 371 *cameraInfo = info.static_camera_characteristics; 372 } 373 374 return ret; 375} 376 377status_t CameraService::getCameraVendorTagDescriptor(/*out*/sp<VendorTagDescriptor>& desc) { 378 if (!mModule) { 379 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 380 return -ENODEV; 381 } 382 383 desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 384 return OK; 385} 386 387int CameraService::getDeviceVersion(int cameraId, int* facing) { 388 struct camera_info info; 389 if (mModule->get_camera_info(cameraId, &info) != OK) { 390 return -1; 391 } 392 393 int deviceVersion; 394 if (mModule->common.module_api_version >= CAMERA_MODULE_API_VERSION_2_0) { 395 deviceVersion = info.device_version; 396 } else { 397 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 398 } 399 400 if (facing) { 401 *facing = info.facing; 402 } 403 404 return deviceVersion; 405} 406 407bool CameraService::isValidCameraId(int cameraId) { 408 int facing; 409 int deviceVersion = getDeviceVersion(cameraId, &facing); 410 411 switch(deviceVersion) { 412 case CAMERA_DEVICE_API_VERSION_1_0: 413 case CAMERA_DEVICE_API_VERSION_2_0: 414 case CAMERA_DEVICE_API_VERSION_2_1: 415 case CAMERA_DEVICE_API_VERSION_3_0: 416 case CAMERA_DEVICE_API_VERSION_3_1: 417 case CAMERA_DEVICE_API_VERSION_3_2: 418 return true; 419 default: 420 return false; 421 } 422 423 return false; 424} 425 426bool CameraService::setUpVendorTags() { 427 vendor_tag_ops_t vOps = vendor_tag_ops_t(); 428 429 // Check if vendor operations have been implemented 430 if (mModule->get_vendor_tag_ops == NULL) { 431 ALOGI("%s: No vendor tags defined for this device.", __FUNCTION__); 432 return false; 433 } 434 435 ATRACE_BEGIN("camera3->get_metadata_vendor_tag_ops"); 436 mModule->get_vendor_tag_ops(&vOps); 437 ATRACE_END(); 438 439 // Ensure all vendor operations are present 440 if (vOps.get_tag_count == NULL || vOps.get_all_tags == NULL || 441 vOps.get_section_name == NULL || vOps.get_tag_name == NULL || 442 vOps.get_tag_type == NULL) { 443 ALOGE("%s: Vendor tag operations not fully defined. Ignoring definitions." 444 , __FUNCTION__); 445 return false; 446 } 447 448 // Read all vendor tag definitions into a descriptor 449 sp<VendorTagDescriptor> desc; 450 status_t res; 451 if ((res = VendorTagDescriptor::createDescriptorFromOps(&vOps, /*out*/desc)) 452 != OK) { 453 ALOGE("%s: Could not generate descriptor from vendor tag operations," 454 "received error %s (%d). Camera clients will not be able to use" 455 "vendor tags", __FUNCTION__, strerror(res), res); 456 return false; 457 } 458 459 // Set the global descriptor to use with camera metadata 460 VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc); 461 return true; 462} 463 464status_t CameraService::initializeShimMetadata(int cameraId) { 465 int pid = getCallingPid(); 466 int uid = getCallingUid(); 467 status_t ret = validateConnect(cameraId, uid); 468 if (ret != OK) { 469 // Error already logged by callee 470 return ret; 471 } 472 473 bool needsNewClient = false; 474 sp<Client> client; 475 476 String16 internalPackageName("media"); 477 { // Scope for service lock 478 Mutex::Autolock lock(mServiceLock); 479 if (mClient[cameraId] != NULL) { 480 client = static_cast<Client*>(mClient[cameraId].promote().get()); 481 } 482 if (client == NULL) { 483 needsNewClient = true; 484 ret = connectHelperLocked(/*cameraClient*/NULL, // Empty binder callbacks 485 cameraId, 486 internalPackageName, 487 uid, 488 pid, 489 client); 490 491 if (ret != OK) { 492 // Error already logged by callee 493 return ret; 494 } 495 } 496 497 if (client == NULL) { 498 ALOGE("%s: Could not connect to client camera device.", __FUNCTION__); 499 return BAD_VALUE; 500 } 501 502 String8 rawParams = client->getParameters(); 503 CameraParameters params(rawParams); 504 mShimParams.add(cameraId, params); 505 } 506 507 // Close client if one was opened solely for this call 508 if (needsNewClient) { 509 client->disconnect(); 510 } 511 return OK; 512} 513 514status_t CameraService::getLegacyParametersLazy(int cameraId, 515 /*out*/ 516 CameraParameters* parameters) { 517 518 ALOGV("%s: for cameraId: %d", __FUNCTION__, cameraId); 519 520 status_t ret = 0; 521 522 if (parameters == NULL) { 523 ALOGE("%s: parameters must not be null", __FUNCTION__); 524 return BAD_VALUE; 525 } 526 527 ssize_t index = -1; 528 { // Scope for service lock 529 Mutex::Autolock lock(mServiceLock); 530 index = mShimParams.indexOfKey(cameraId); 531 // Release service lock so initializeShimMetadata can be called correctly. 532 533 if (index >= 0) { 534 *parameters = mShimParams[index]; 535 } 536 } 537 538 if (index < 0) { 539 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 540 ret = initializeShimMetadata(cameraId); 541 IPCThreadState::self()->restoreCallingIdentity(token); 542 if (ret != OK) { 543 // Error already logged by callee 544 return ret; 545 } 546 547 { // Scope for service lock 548 Mutex::Autolock lock(mServiceLock); 549 index = mShimParams.indexOfKey(cameraId); 550 551 LOG_ALWAYS_FATAL_IF(index < 0, "index should have been initialized"); 552 553 *parameters = mShimParams[index]; 554 } 555 } 556 557 return OK; 558} 559 560status_t CameraService::validateConnect(int cameraId, 561 /*inout*/ 562 int& clientUid) const { 563 564 int callingPid = getCallingPid(); 565 566 if (clientUid == USE_CALLING_UID) { 567 clientUid = getCallingUid(); 568 } else { 569 // We only trust our own process to forward client UIDs 570 if (callingPid != getpid()) { 571 ALOGE("CameraService::connect X (pid %d) rejected (don't trust clientUid)", 572 callingPid); 573 return PERMISSION_DENIED; 574 } 575 } 576 577 if (!mModule) { 578 ALOGE("Camera HAL module not loaded"); 579 return -ENODEV; 580 } 581 582 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 583 ALOGE("CameraService::connect X (pid %d) rejected (invalid cameraId %d).", 584 callingPid, cameraId); 585 return -ENODEV; 586 } 587 588 char value[PROPERTY_VALUE_MAX]; 589 property_get("sys.secpolicy.camera.disabled", value, "0"); 590 if (strcmp(value, "1") == 0) { 591 // Camera is disabled by DevicePolicyManager. 592 ALOGI("Camera is disabled. connect X (pid %d) rejected", callingPid); 593 return -EACCES; 594 } 595 596 ICameraServiceListener::Status currentStatus = getStatus(cameraId); 597 if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { 598 ALOGI("Camera is not plugged in," 599 " connect X (pid %d) rejected", callingPid); 600 return -ENODEV; 601 } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) { 602 ALOGI("Camera is enumerating," 603 " connect X (pid %d) rejected", callingPid); 604 return -EBUSY; 605 } 606 // Else don't check for STATUS_NOT_AVAILABLE. 607 // -- It's done implicitly in canConnectUnsafe /w the mBusy array 608 609 return OK; 610} 611 612bool CameraService::canConnectUnsafe(int cameraId, 613 const String16& clientPackageName, 614 const sp<IBinder>& remoteCallback, 615 sp<BasicClient> &client) { 616 String8 clientName8(clientPackageName); 617 int callingPid = getCallingPid(); 618 619 if (mClient[cameraId] != 0) { 620 client = mClient[cameraId].promote(); 621 if (client != 0) { 622 if (remoteCallback == client->getRemote()) { 623 LOG1("CameraService::connect X (pid %d) (the same client)", 624 callingPid); 625 return true; 626 } else { 627 // TODOSC: need to support 1 regular client, 628 // multiple shared clients here 629 ALOGW("CameraService::connect X (pid %d) rejected" 630 " (existing client).", callingPid); 631 return false; 632 } 633 } 634 mClient[cameraId].clear(); 635 } 636 637 /* 638 mBusy is set to false as the last step of the Client destructor, 639 after which it is guaranteed that the Client destructor has finished ( 640 including any inherited destructors) 641 642 We only need this for a Client subclasses since we don't allow 643 multiple Clents to be opened concurrently, but multiple BasicClient 644 would be fine 645 */ 646 if (mBusy[cameraId]) { 647 ALOGW("CameraService::connect X (pid %d, \"%s\") rejected" 648 " (camera %d is still busy).", callingPid, 649 clientName8.string(), cameraId); 650 return false; 651 } 652 653 return true; 654} 655 656status_t CameraService::connectHelperLocked(const sp<ICameraClient>& cameraClient, 657 int cameraId, 658 const String16& clientPackageName, 659 int clientUid, 660 int callingPid, 661 /*out*/ 662 sp<Client>& client, 663 int halVersion) { 664 665 int facing = -1; 666 int deviceVersion = getDeviceVersion(cameraId, &facing); 667 668 // If there are other non-exclusive users of the camera, 669 // this will tear them down before we can reuse the camera 670 if (isValidCameraId(cameraId)) { 671 // transition from PRESENT -> NOT_AVAILABLE 672 updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 673 cameraId); 674 } 675 676 if (halVersion < 0 || halVersion == deviceVersion) { 677 // Default path: HAL version is unspecified by caller, create CameraClient 678 // based on device version reported by the HAL. 679 switch(deviceVersion) { 680 case CAMERA_DEVICE_API_VERSION_1_0: 681 client = new CameraClient(this, cameraClient, 682 clientPackageName, cameraId, 683 facing, callingPid, clientUid, getpid()); 684 break; 685 case CAMERA_DEVICE_API_VERSION_2_0: 686 case CAMERA_DEVICE_API_VERSION_2_1: 687 case CAMERA_DEVICE_API_VERSION_3_0: 688 case CAMERA_DEVICE_API_VERSION_3_1: 689 case CAMERA_DEVICE_API_VERSION_3_2: 690 client = new Camera2Client(this, cameraClient, 691 clientPackageName, cameraId, 692 facing, callingPid, clientUid, getpid(), 693 deviceVersion); 694 break; 695 case -1: 696 ALOGE("Invalid camera id %d", cameraId); 697 return BAD_VALUE; 698 default: 699 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 700 return INVALID_OPERATION; 701 } 702 } else { 703 // A particular HAL version is requested by caller. Create CameraClient 704 // based on the requested HAL version. 705 if (deviceVersion > CAMERA_DEVICE_API_VERSION_1_0 && 706 halVersion == CAMERA_DEVICE_API_VERSION_1_0) { 707 // Only support higher HAL version device opened as HAL1.0 device. 708 client = new CameraClient(this, cameraClient, 709 clientPackageName, cameraId, 710 facing, callingPid, clientUid, getpid()); 711 } else { 712 // Other combinations (e.g. HAL3.x open as HAL2.x) are not supported yet. 713 ALOGE("Invalid camera HAL version %x: HAL %x device can only be" 714 " opened as HAL %x device", halVersion, deviceVersion, 715 CAMERA_DEVICE_API_VERSION_1_0); 716 return INVALID_OPERATION; 717 } 718 } 719 720 status_t status = connectFinishUnsafe(client, client->getRemote()); 721 if (status != OK) { 722 // this is probably not recoverable.. maybe the client can try again 723 // OK: we can only get here if we were originally in PRESENT state 724 updateStatus(ICameraServiceListener::STATUS_PRESENT, cameraId); 725 return status; 726 } 727 728 mClient[cameraId] = client; 729 LOG1("CameraService::connect X (id %d, this pid is %d)", cameraId, 730 getpid()); 731 732 return OK; 733} 734 735status_t CameraService::connect( 736 const sp<ICameraClient>& cameraClient, 737 int cameraId, 738 const String16& clientPackageName, 739 int clientUid, 740 /*out*/ 741 sp<ICamera>& device) { 742 743 String8 clientName8(clientPackageName); 744 int callingPid = getCallingPid(); 745 746 LOG1("CameraService::connect E (pid %d \"%s\", id %d)", callingPid, 747 clientName8.string(), cameraId); 748 749 status_t status = validateConnect(cameraId, /*inout*/clientUid); 750 if (status != OK) { 751 return status; 752 } 753 754 755 sp<Client> client; 756 { 757 Mutex::Autolock lock(mServiceLock); 758 sp<BasicClient> clientTmp; 759 if (!canConnectUnsafe(cameraId, clientPackageName, 760 cameraClient->asBinder(), 761 /*out*/clientTmp)) { 762 return -EBUSY; 763 } else if (client.get() != NULL) { 764 device = static_cast<Client*>(clientTmp.get()); 765 return OK; 766 } 767 768 status = connectHelperLocked(cameraClient, 769 cameraId, 770 clientPackageName, 771 clientUid, 772 callingPid, 773 client); 774 if (status != OK) { 775 return status; 776 } 777 778 } 779 // important: release the mutex here so the client can call back 780 // into the service from its destructor (can be at the end of the call) 781 782 device = client; 783 return OK; 784} 785 786status_t CameraService::connectLegacy( 787 const sp<ICameraClient>& cameraClient, 788 int cameraId, int halVersion, 789 const String16& clientPackageName, 790 int clientUid, 791 /*out*/ 792 sp<ICamera>& device) { 793 794 if (mModule->common.module_api_version < CAMERA_MODULE_API_VERSION_2_3) { 795 ALOGE("%s: camera HAL module version %x doesn't support connecting to legacy HAL devices!", 796 __FUNCTION__, mModule->common.module_api_version); 797 return INVALID_OPERATION; 798 } 799 800 String8 clientName8(clientPackageName); 801 int callingPid = getCallingPid(); 802 803 LOG1("CameraService::connect legacy E (pid %d \"%s\", id %d)", callingPid, 804 clientName8.string(), cameraId); 805 806 status_t status = validateConnect(cameraId, /*inout*/clientUid); 807 if (status != OK) { 808 return status; 809 } 810 811 sp<Client> client; 812 { 813 Mutex::Autolock lock(mServiceLock); 814 sp<BasicClient> clientTmp; 815 if (!canConnectUnsafe(cameraId, clientPackageName, 816 cameraClient->asBinder(), 817 /*out*/clientTmp)) { 818 return -EBUSY; 819 } else if (client.get() != NULL) { 820 device = static_cast<Client*>(clientTmp.get()); 821 return OK; 822 } 823 824 status = connectHelperLocked(cameraClient, 825 cameraId, 826 clientPackageName, 827 clientUid, 828 callingPid, 829 client, 830 halVersion); 831 if (status != OK) { 832 return status; 833 } 834 835 } 836 // important: release the mutex here so the client can call back 837 // into the service from its destructor (can be at the end of the call) 838 839 device = client; 840 return OK; 841} 842 843status_t CameraService::connectFinishUnsafe(const sp<BasicClient>& client, 844 const sp<IBinder>& remoteCallback) { 845 status_t status = client->initialize(mModule); 846 if (status != OK) { 847 return status; 848 } 849 if (remoteCallback != NULL) { 850 remoteCallback->linkToDeath(this); 851 } 852 853 return OK; 854} 855 856status_t CameraService::connectPro( 857 const sp<IProCameraCallbacks>& cameraCb, 858 int cameraId, 859 const String16& clientPackageName, 860 int clientUid, 861 /*out*/ 862 sp<IProCameraUser>& device) 863{ 864 if (cameraCb == 0) { 865 ALOGE("%s: Callback must not be null", __FUNCTION__); 866 return BAD_VALUE; 867 } 868 869 String8 clientName8(clientPackageName); 870 int callingPid = getCallingPid(); 871 872 LOG1("CameraService::connectPro E (pid %d \"%s\", id %d)", callingPid, 873 clientName8.string(), cameraId); 874 status_t status = validateConnect(cameraId, /*inout*/clientUid); 875 if (status != OK) { 876 return status; 877 } 878 879 sp<ProClient> client; 880 { 881 Mutex::Autolock lock(mServiceLock); 882 { 883 sp<BasicClient> client; 884 if (!canConnectUnsafe(cameraId, clientPackageName, 885 cameraCb->asBinder(), 886 /*out*/client)) { 887 return -EBUSY; 888 } 889 } 890 891 int facing = -1; 892 int deviceVersion = getDeviceVersion(cameraId, &facing); 893 894 switch(deviceVersion) { 895 case CAMERA_DEVICE_API_VERSION_1_0: 896 ALOGE("Camera id %d uses HALv1, doesn't support ProCamera", 897 cameraId); 898 return -EOPNOTSUPP; 899 break; 900 case CAMERA_DEVICE_API_VERSION_2_0: 901 case CAMERA_DEVICE_API_VERSION_2_1: 902 case CAMERA_DEVICE_API_VERSION_3_0: 903 case CAMERA_DEVICE_API_VERSION_3_1: 904 case CAMERA_DEVICE_API_VERSION_3_2: 905 client = new ProCamera2Client(this, cameraCb, clientPackageName, 906 cameraId, facing, callingPid, clientUid, getpid()); 907 break; 908 case -1: 909 ALOGE("Invalid camera id %d", cameraId); 910 return BAD_VALUE; 911 default: 912 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 913 return INVALID_OPERATION; 914 } 915 916 status_t status = connectFinishUnsafe(client, client->getRemote()); 917 if (status != OK) { 918 return status; 919 } 920 921 mProClientList[cameraId].push(client); 922 923 LOG1("CameraService::connectPro X (id %d, this pid is %d)", cameraId, 924 getpid()); 925 } 926 // important: release the mutex here so the client can call back 927 // into the service from its destructor (can be at the end of the call) 928 device = client; 929 return OK; 930} 931 932status_t CameraService::connectDevice( 933 const sp<ICameraDeviceCallbacks>& cameraCb, 934 int cameraId, 935 const String16& clientPackageName, 936 int clientUid, 937 /*out*/ 938 sp<ICameraDeviceUser>& device) 939{ 940 941 String8 clientName8(clientPackageName); 942 int callingPid = getCallingPid(); 943 944 LOG1("CameraService::connectDevice E (pid %d \"%s\", id %d)", callingPid, 945 clientName8.string(), cameraId); 946 947 status_t status = validateConnect(cameraId, /*inout*/clientUid); 948 if (status != OK) { 949 return status; 950 } 951 952 sp<CameraDeviceClient> client; 953 { 954 Mutex::Autolock lock(mServiceLock); 955 { 956 sp<BasicClient> client; 957 if (!canConnectUnsafe(cameraId, clientPackageName, 958 cameraCb->asBinder(), 959 /*out*/client)) { 960 return -EBUSY; 961 } 962 } 963 964 int facing = -1; 965 int deviceVersion = getDeviceVersion(cameraId, &facing); 966 967 // If there are other non-exclusive users of the camera, 968 // this will tear them down before we can reuse the camera 969 if (isValidCameraId(cameraId)) { 970 // transition from PRESENT -> NOT_AVAILABLE 971 updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 972 cameraId); 973 } 974 975 switch(deviceVersion) { 976 case CAMERA_DEVICE_API_VERSION_1_0: 977 ALOGW("Camera using old HAL version: %d", deviceVersion); 978 return -EOPNOTSUPP; 979 // TODO: don't allow 2.0 Only allow 2.1 and higher 980 case CAMERA_DEVICE_API_VERSION_2_0: 981 case CAMERA_DEVICE_API_VERSION_2_1: 982 case CAMERA_DEVICE_API_VERSION_3_0: 983 case CAMERA_DEVICE_API_VERSION_3_1: 984 case CAMERA_DEVICE_API_VERSION_3_2: 985 client = new CameraDeviceClient(this, cameraCb, clientPackageName, 986 cameraId, facing, callingPid, clientUid, getpid()); 987 break; 988 case -1: 989 ALOGE("Invalid camera id %d", cameraId); 990 return BAD_VALUE; 991 default: 992 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 993 return INVALID_OPERATION; 994 } 995 996 status_t status = connectFinishUnsafe(client, client->getRemote()); 997 if (status != OK) { 998 // this is probably not recoverable.. maybe the client can try again 999 // OK: we can only get here if we were originally in PRESENT state 1000 updateStatus(ICameraServiceListener::STATUS_PRESENT, cameraId); 1001 return status; 1002 } 1003 1004 LOG1("CameraService::connectDevice X (id %d, this pid is %d)", cameraId, 1005 getpid()); 1006 1007 mClient[cameraId] = client; 1008 } 1009 // important: release the mutex here so the client can call back 1010 // into the service from its destructor (can be at the end of the call) 1011 1012 device = client; 1013 return OK; 1014} 1015 1016 1017status_t CameraService::addListener( 1018 const sp<ICameraServiceListener>& listener) { 1019 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); 1020 1021 if (listener == 0) { 1022 ALOGE("%s: Listener must not be null", __FUNCTION__); 1023 return BAD_VALUE; 1024 } 1025 1026 Mutex::Autolock lock(mServiceLock); 1027 1028 Vector<sp<ICameraServiceListener> >::iterator it, end; 1029 for (it = mListenerList.begin(); it != mListenerList.end(); ++it) { 1030 if ((*it)->asBinder() == listener->asBinder()) { 1031 ALOGW("%s: Tried to add listener %p which was already subscribed", 1032 __FUNCTION__, listener.get()); 1033 return ALREADY_EXISTS; 1034 } 1035 } 1036 1037 mListenerList.push_back(listener); 1038 1039 /* Immediately signal current status to this listener only */ 1040 { 1041 Mutex::Autolock m(mStatusMutex) ; 1042 int numCams = getNumberOfCameras(); 1043 for (int i = 0; i < numCams; ++i) { 1044 listener->onStatusChanged(mStatusList[i], i); 1045 } 1046 } 1047 1048 return OK; 1049} 1050status_t CameraService::removeListener( 1051 const sp<ICameraServiceListener>& listener) { 1052 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); 1053 1054 if (listener == 0) { 1055 ALOGE("%s: Listener must not be null", __FUNCTION__); 1056 return BAD_VALUE; 1057 } 1058 1059 Mutex::Autolock lock(mServiceLock); 1060 1061 Vector<sp<ICameraServiceListener> >::iterator it; 1062 for (it = mListenerList.begin(); it != mListenerList.end(); ++it) { 1063 if ((*it)->asBinder() == listener->asBinder()) { 1064 mListenerList.erase(it); 1065 return OK; 1066 } 1067 } 1068 1069 ALOGW("%s: Tried to remove a listener %p which was not subscribed", 1070 __FUNCTION__, listener.get()); 1071 1072 return BAD_VALUE; 1073} 1074 1075status_t CameraService::getLegacyParameters( 1076 int cameraId, 1077 /*out*/ 1078 String16* parameters) { 1079 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1080 1081 if (parameters == NULL) { 1082 ALOGE("%s: parameters must not be null", __FUNCTION__); 1083 return BAD_VALUE; 1084 } 1085 1086 status_t ret = 0; 1087 1088 CameraParameters shimParams; 1089 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 1090 // Error logged by caller 1091 return ret; 1092 } 1093 1094 String8 shimParamsString8 = shimParams.flatten(); 1095 String16 shimParamsString16 = String16(shimParamsString8); 1096 1097 *parameters = shimParamsString16; 1098 1099 return OK; 1100} 1101 1102status_t CameraService::supportsCameraApi(int cameraId, int apiVersion) { 1103 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1104 1105 switch (apiVersion) { 1106 case API_VERSION_1: 1107 case API_VERSION_2: 1108 break; 1109 default: 1110 ALOGE("%s: Bad API version %d", __FUNCTION__, apiVersion); 1111 return BAD_VALUE; 1112 } 1113 1114 int facing = -1; 1115 int deviceVersion = getDeviceVersion(cameraId, &facing); 1116 1117 switch(deviceVersion) { 1118 case CAMERA_DEVICE_API_VERSION_1_0: 1119 case CAMERA_DEVICE_API_VERSION_2_0: 1120 case CAMERA_DEVICE_API_VERSION_2_1: 1121 case CAMERA_DEVICE_API_VERSION_3_0: 1122 case CAMERA_DEVICE_API_VERSION_3_1: 1123 if (apiVersion == API_VERSION_2) { 1124 ALOGV("%s: Camera id %d uses HAL prior to HAL3.2, doesn't support api2 without shim", 1125 __FUNCTION__, cameraId); 1126 return -EOPNOTSUPP; 1127 } else { // if (apiVersion == API_VERSION_1) { 1128 ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported", 1129 __FUNCTION__, cameraId); 1130 return OK; 1131 } 1132 case CAMERA_DEVICE_API_VERSION_3_2: 1133 ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly", 1134 __FUNCTION__, cameraId); 1135 return OK; 1136 case -1: 1137 ALOGE("%s: Invalid camera id %d", __FUNCTION__, cameraId); 1138 return BAD_VALUE; 1139 default: 1140 ALOGE("%s: Unknown camera device HAL version: %d", __FUNCTION__, deviceVersion); 1141 return INVALID_OPERATION; 1142 } 1143 1144 return OK; 1145} 1146 1147void CameraService::removeClientByRemote(const wp<IBinder>& remoteBinder) { 1148 int callingPid = getCallingPid(); 1149 LOG1("CameraService::removeClientByRemote E (pid %d)", callingPid); 1150 1151 // Declare this before the lock to make absolutely sure the 1152 // destructor won't be called with the lock held. 1153 Mutex::Autolock lock(mServiceLock); 1154 1155 int outIndex; 1156 sp<BasicClient> client = findClientUnsafe(remoteBinder, outIndex); 1157 1158 if (client != 0) { 1159 // Found our camera, clear and leave. 1160 LOG1("removeClient: clear camera %d", outIndex); 1161 1162 sp<IBinder> remote = client->getRemote(); 1163 if (remote != NULL) { 1164 remote->unlinkToDeath(this); 1165 } 1166 1167 mClient[outIndex].clear(); 1168 } else { 1169 1170 sp<ProClient> clientPro = findProClientUnsafe(remoteBinder); 1171 1172 if (clientPro != NULL) { 1173 // Found our camera, clear and leave. 1174 LOG1("removeClient: clear pro %p", clientPro.get()); 1175 1176 clientPro->getRemoteCallback()->asBinder()->unlinkToDeath(this); 1177 } 1178 } 1179 1180 LOG1("CameraService::removeClientByRemote X (pid %d)", callingPid); 1181} 1182 1183sp<CameraService::ProClient> CameraService::findProClientUnsafe( 1184 const wp<IBinder>& cameraCallbacksRemote) 1185{ 1186 sp<ProClient> clientPro; 1187 1188 for (int i = 0; i < mNumberOfCameras; ++i) { 1189 Vector<size_t> removeIdx; 1190 1191 for (size_t j = 0; j < mProClientList[i].size(); ++j) { 1192 wp<ProClient> cl = mProClientList[i][j]; 1193 1194 sp<ProClient> clStrong = cl.promote(); 1195 if (clStrong != NULL && clStrong->getRemote() == cameraCallbacksRemote) { 1196 clientPro = clStrong; 1197 break; 1198 } else if (clStrong == NULL) { 1199 // mark to clean up dead ptr 1200 removeIdx.push(j); 1201 } 1202 } 1203 1204 // remove stale ptrs (in reverse so the indices dont change) 1205 for (ssize_t j = (ssize_t)removeIdx.size() - 1; j >= 0; --j) { 1206 mProClientList[i].removeAt(removeIdx[j]); 1207 } 1208 1209 } 1210 1211 return clientPro; 1212} 1213 1214sp<CameraService::BasicClient> CameraService::findClientUnsafe( 1215 const wp<IBinder>& cameraClient, int& outIndex) { 1216 sp<BasicClient> client; 1217 1218 for (int i = 0; i < mNumberOfCameras; i++) { 1219 1220 // This happens when we have already disconnected (or this is 1221 // just another unused camera). 1222 if (mClient[i] == 0) continue; 1223 1224 // Promote mClient. It can fail if we are called from this path: 1225 // Client::~Client() -> disconnect() -> removeClientByRemote(). 1226 client = mClient[i].promote(); 1227 1228 // Clean up stale client entry 1229 if (client == NULL) { 1230 mClient[i].clear(); 1231 continue; 1232 } 1233 1234 if (cameraClient == client->getRemote()) { 1235 // Found our camera 1236 outIndex = i; 1237 return client; 1238 } 1239 } 1240 1241 outIndex = -1; 1242 return NULL; 1243} 1244 1245CameraService::BasicClient* CameraService::getClientByIdUnsafe(int cameraId) { 1246 if (cameraId < 0 || cameraId >= mNumberOfCameras) return NULL; 1247 return mClient[cameraId].unsafe_get(); 1248} 1249 1250Mutex* CameraService::getClientLockById(int cameraId) { 1251 if (cameraId < 0 || cameraId >= mNumberOfCameras) return NULL; 1252 return &mClientLock[cameraId]; 1253} 1254 1255sp<CameraService::BasicClient> CameraService::getClientByRemote( 1256 const wp<IBinder>& cameraClient) { 1257 1258 // Declare this before the lock to make absolutely sure the 1259 // destructor won't be called with the lock held. 1260 sp<BasicClient> client; 1261 1262 Mutex::Autolock lock(mServiceLock); 1263 1264 int outIndex; 1265 client = findClientUnsafe(cameraClient, outIndex); 1266 1267 return client; 1268} 1269 1270status_t CameraService::onTransact( 1271 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) { 1272 // Permission checks 1273 switch (code) { 1274 case BnCameraService::CONNECT: 1275 case BnCameraService::CONNECT_PRO: 1276 case BnCameraService::CONNECT_DEVICE: 1277 case BnCameraService::CONNECT_LEGACY: 1278 const int pid = getCallingPid(); 1279 const int self_pid = getpid(); 1280 if (pid != self_pid) { 1281 // we're called from a different process, do the real check 1282 if (!checkCallingPermission( 1283 String16("android.permission.CAMERA"))) { 1284 const int uid = getCallingUid(); 1285 ALOGE("Permission Denial: " 1286 "can't use the camera pid=%d, uid=%d", pid, uid); 1287 return PERMISSION_DENIED; 1288 } 1289 } 1290 break; 1291 } 1292 1293 return BnCameraService::onTransact(code, data, reply, flags); 1294} 1295 1296// The reason we need this busy bit is a new CameraService::connect() request 1297// may come in while the previous Client's destructor has not been run or is 1298// still running. If the last strong reference of the previous Client is gone 1299// but the destructor has not been finished, we should not allow the new Client 1300// to be created because we need to wait for the previous Client to tear down 1301// the hardware first. 1302void CameraService::setCameraBusy(int cameraId) { 1303 android_atomic_write(1, &mBusy[cameraId]); 1304 1305 ALOGV("setCameraBusy cameraId=%d", cameraId); 1306} 1307 1308void CameraService::setCameraFree(int cameraId) { 1309 android_atomic_write(0, &mBusy[cameraId]); 1310 1311 ALOGV("setCameraFree cameraId=%d", cameraId); 1312} 1313 1314// We share the media players for shutter and recording sound for all clients. 1315// A reference count is kept to determine when we will actually release the 1316// media players. 1317 1318MediaPlayer* CameraService::newMediaPlayer(const char *file) { 1319 MediaPlayer* mp = new MediaPlayer(); 1320 if (mp->setDataSource(NULL /* httpService */, file, NULL) == NO_ERROR) { 1321 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 1322 mp->prepare(); 1323 } else { 1324 ALOGE("Failed to load CameraService sounds: %s", file); 1325 return NULL; 1326 } 1327 return mp; 1328} 1329 1330void CameraService::loadSound() { 1331 Mutex::Autolock lock(mSoundLock); 1332 LOG1("CameraService::loadSound ref=%d", mSoundRef); 1333 if (mSoundRef++) return; 1334 1335 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 1336 mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 1337} 1338 1339void CameraService::releaseSound() { 1340 Mutex::Autolock lock(mSoundLock); 1341 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 1342 if (--mSoundRef) return; 1343 1344 for (int i = 0; i < NUM_SOUNDS; i++) { 1345 if (mSoundPlayer[i] != 0) { 1346 mSoundPlayer[i]->disconnect(); 1347 mSoundPlayer[i].clear(); 1348 } 1349 } 1350} 1351 1352void CameraService::playSound(sound_kind kind) { 1353 LOG1("playSound(%d)", kind); 1354 Mutex::Autolock lock(mSoundLock); 1355 sp<MediaPlayer> player = mSoundPlayer[kind]; 1356 if (player != 0) { 1357 player->seekTo(0); 1358 player->start(); 1359 } 1360} 1361 1362// ---------------------------------------------------------------------------- 1363 1364CameraService::Client::Client(const sp<CameraService>& cameraService, 1365 const sp<ICameraClient>& cameraClient, 1366 const String16& clientPackageName, 1367 int cameraId, int cameraFacing, 1368 int clientPid, uid_t clientUid, 1369 int servicePid) : 1370 CameraService::BasicClient(cameraService, cameraClient->asBinder(), 1371 clientPackageName, 1372 cameraId, cameraFacing, 1373 clientPid, clientUid, 1374 servicePid) 1375{ 1376 int callingPid = getCallingPid(); 1377 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 1378 1379 mRemoteCallback = cameraClient; 1380 1381 cameraService->setCameraBusy(cameraId); 1382 cameraService->loadSound(); 1383 1384 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 1385} 1386 1387// tear down the client 1388CameraService::Client::~Client() { 1389 ALOGV("~Client"); 1390 mDestructionStarted = true; 1391 1392 mCameraService->releaseSound(); 1393 // unconditionally disconnect. function is idempotent 1394 Client::disconnect(); 1395} 1396 1397CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 1398 const sp<IBinder>& remoteCallback, 1399 const String16& clientPackageName, 1400 int cameraId, int cameraFacing, 1401 int clientPid, uid_t clientUid, 1402 int servicePid): 1403 mClientPackageName(clientPackageName) 1404{ 1405 mCameraService = cameraService; 1406 mRemoteBinder = remoteCallback; 1407 mCameraId = cameraId; 1408 mCameraFacing = cameraFacing; 1409 mClientPid = clientPid; 1410 mClientUid = clientUid; 1411 mServicePid = servicePid; 1412 mOpsActive = false; 1413 mDestructionStarted = false; 1414} 1415 1416CameraService::BasicClient::~BasicClient() { 1417 ALOGV("~BasicClient"); 1418 mDestructionStarted = true; 1419} 1420 1421void CameraService::BasicClient::disconnect() { 1422 ALOGV("BasicClient::disconnect"); 1423 mCameraService->removeClientByRemote(mRemoteBinder); 1424 // client shouldn't be able to call into us anymore 1425 mClientPid = 0; 1426} 1427 1428status_t CameraService::BasicClient::startCameraOps() { 1429 int32_t res; 1430 1431 mOpsCallback = new OpsCallback(this); 1432 1433 { 1434 ALOGV("%s: Start camera ops, package name = %s, client UID = %d", 1435 __FUNCTION__, String8(mClientPackageName).string(), mClientUid); 1436 } 1437 1438 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 1439 mClientPackageName, mOpsCallback); 1440 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 1441 mClientUid, mClientPackageName); 1442 1443 if (res != AppOpsManager::MODE_ALLOWED) { 1444 ALOGI("Camera %d: Access for \"%s\" has been revoked", 1445 mCameraId, String8(mClientPackageName).string()); 1446 return PERMISSION_DENIED; 1447 } 1448 mOpsActive = true; 1449 return OK; 1450} 1451 1452status_t CameraService::BasicClient::finishCameraOps() { 1453 if (mOpsActive) { 1454 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 1455 mClientPackageName); 1456 mOpsActive = false; 1457 } 1458 mAppOpsManager.stopWatchingMode(mOpsCallback); 1459 mOpsCallback.clear(); 1460 1461 return OK; 1462} 1463 1464void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 1465 String8 name(packageName); 1466 String8 myName(mClientPackageName); 1467 1468 if (op != AppOpsManager::OP_CAMERA) { 1469 ALOGW("Unexpected app ops notification received: %d", op); 1470 return; 1471 } 1472 1473 int32_t res; 1474 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 1475 mClientUid, mClientPackageName); 1476 ALOGV("checkOp returns: %d, %s ", res, 1477 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 1478 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 1479 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 1480 "UNKNOWN"); 1481 1482 if (res != AppOpsManager::MODE_ALLOWED) { 1483 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 1484 myName.string()); 1485 // Reset the client PID to allow server-initiated disconnect, 1486 // and to prevent further calls by client. 1487 mClientPid = getCallingPid(); 1488 CaptureResultExtras resultExtras; // a dummy result (invalid) 1489 notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE, resultExtras); 1490 disconnect(); 1491 } 1492} 1493 1494// ---------------------------------------------------------------------------- 1495 1496Mutex* CameraService::Client::getClientLockFromCookie(void* user) { 1497 return gCameraService->getClientLockById((int)(intptr_t) user); 1498} 1499 1500// Provide client pointer for callbacks. Client lock returned from getClientLockFromCookie should 1501// be acquired for this to be safe 1502CameraService::Client* CameraService::Client::getClientFromCookie(void* user) { 1503 BasicClient *basicClient = gCameraService->getClientByIdUnsafe((int)(intptr_t) user); 1504 // OK: only CameraClient calls this, and they already cast anyway. 1505 Client* client = static_cast<Client*>(basicClient); 1506 1507 // This could happen if the Client is in the process of shutting down (the 1508 // last strong reference is gone, but the destructor hasn't finished 1509 // stopping the hardware). 1510 if (client == NULL) return NULL; 1511 1512 // destruction already started, so should not be accessed 1513 if (client->mDestructionStarted) return NULL; 1514 1515 return client; 1516} 1517 1518void CameraService::Client::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 1519 const CaptureResultExtras& resultExtras) { 1520 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 1521} 1522 1523// NOTE: function is idempotent 1524void CameraService::Client::disconnect() { 1525 ALOGV("Client::disconnect"); 1526 BasicClient::disconnect(); 1527 mCameraService->setCameraFree(mCameraId); 1528 1529 StatusVector rejectSourceStates; 1530 rejectSourceStates.push_back(ICameraServiceListener::STATUS_NOT_PRESENT); 1531 rejectSourceStates.push_back(ICameraServiceListener::STATUS_ENUMERATING); 1532 1533 // Transition to PRESENT if the camera is not in either of above 2 states 1534 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, 1535 mCameraId, 1536 &rejectSourceStates); 1537} 1538 1539CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 1540 mClient(client) { 1541} 1542 1543void CameraService::Client::OpsCallback::opChanged(int32_t op, 1544 const String16& packageName) { 1545 sp<BasicClient> client = mClient.promote(); 1546 if (client != NULL) { 1547 client->opChanged(op, packageName); 1548 } 1549} 1550 1551// ---------------------------------------------------------------------------- 1552// IProCamera 1553// ---------------------------------------------------------------------------- 1554 1555CameraService::ProClient::ProClient(const sp<CameraService>& cameraService, 1556 const sp<IProCameraCallbacks>& remoteCallback, 1557 const String16& clientPackageName, 1558 int cameraId, 1559 int cameraFacing, 1560 int clientPid, 1561 uid_t clientUid, 1562 int servicePid) 1563 : CameraService::BasicClient(cameraService, remoteCallback->asBinder(), 1564 clientPackageName, cameraId, cameraFacing, 1565 clientPid, clientUid, servicePid) 1566{ 1567 mRemoteCallback = remoteCallback; 1568} 1569 1570CameraService::ProClient::~ProClient() { 1571} 1572 1573void CameraService::ProClient::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 1574 const CaptureResultExtras& resultExtras) { 1575 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 1576} 1577 1578// ---------------------------------------------------------------------------- 1579 1580static const int kDumpLockRetries = 50; 1581static const int kDumpLockSleep = 60000; 1582 1583static bool tryLock(Mutex& mutex) 1584{ 1585 bool locked = false; 1586 for (int i = 0; i < kDumpLockRetries; ++i) { 1587 if (mutex.tryLock() == NO_ERROR) { 1588 locked = true; 1589 break; 1590 } 1591 usleep(kDumpLockSleep); 1592 } 1593 return locked; 1594} 1595 1596status_t CameraService::dump(int fd, const Vector<String16>& args) { 1597 String8 result; 1598 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 1599 result.appendFormat("Permission Denial: " 1600 "can't dump CameraService from pid=%d, uid=%d\n", 1601 getCallingPid(), 1602 getCallingUid()); 1603 write(fd, result.string(), result.size()); 1604 } else { 1605 bool locked = tryLock(mServiceLock); 1606 // failed to lock - CameraService is probably deadlocked 1607 if (!locked) { 1608 result.append("CameraService may be deadlocked\n"); 1609 write(fd, result.string(), result.size()); 1610 } 1611 1612 bool hasClient = false; 1613 if (!mModule) { 1614 result = String8::format("No camera module available!\n"); 1615 write(fd, result.string(), result.size()); 1616 if (locked) mServiceLock.unlock(); 1617 return NO_ERROR; 1618 } 1619 1620 result = String8::format("Camera module HAL API version: 0x%x\n", 1621 mModule->common.hal_api_version); 1622 result.appendFormat("Camera module API version: 0x%x\n", 1623 mModule->common.module_api_version); 1624 result.appendFormat("Camera module name: %s\n", 1625 mModule->common.name); 1626 result.appendFormat("Camera module author: %s\n", 1627 mModule->common.author); 1628 result.appendFormat("Number of camera devices: %d\n\n", mNumberOfCameras); 1629 1630 sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 1631 if (desc == NULL) { 1632 result.appendFormat("Vendor tags left unimplemented.\n"); 1633 } else { 1634 result.appendFormat("Vendor tag definitions:\n"); 1635 } 1636 1637 write(fd, result.string(), result.size()); 1638 1639 if (desc != NULL) { 1640 desc->dump(fd, /*verbosity*/2, /*indentation*/4); 1641 } 1642 1643 for (int i = 0; i < mNumberOfCameras; i++) { 1644 result = String8::format("Camera %d static information:\n", i); 1645 camera_info info; 1646 1647 status_t rc = mModule->get_camera_info(i, &info); 1648 if (rc != OK) { 1649 result.appendFormat(" Error reading static information!\n"); 1650 write(fd, result.string(), result.size()); 1651 } else { 1652 result.appendFormat(" Facing: %s\n", 1653 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 1654 result.appendFormat(" Orientation: %d\n", info.orientation); 1655 int deviceVersion; 1656 if (mModule->common.module_api_version < 1657 CAMERA_MODULE_API_VERSION_2_0) { 1658 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 1659 } else { 1660 deviceVersion = info.device_version; 1661 } 1662 result.appendFormat(" Device version: 0x%x\n", deviceVersion); 1663 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { 1664 result.appendFormat(" Device static metadata:\n"); 1665 write(fd, result.string(), result.size()); 1666 dump_indented_camera_metadata(info.static_camera_characteristics, 1667 fd, /*verbosity*/2, /*indentation*/4); 1668 } else { 1669 write(fd, result.string(), result.size()); 1670 } 1671 } 1672 1673 sp<BasicClient> client = mClient[i].promote(); 1674 if (client == 0) { 1675 result = String8::format(" Device is closed, no client instance\n"); 1676 write(fd, result.string(), result.size()); 1677 continue; 1678 } 1679 hasClient = true; 1680 result = String8::format(" Device is open. Client instance dump:\n"); 1681 write(fd, result.string(), result.size()); 1682 client->dump(fd, args); 1683 } 1684 if (!hasClient) { 1685 result = String8::format("\nNo active camera clients yet.\n"); 1686 write(fd, result.string(), result.size()); 1687 } 1688 1689 if (locked) mServiceLock.unlock(); 1690 1691 // Dump camera traces if there were any 1692 write(fd, "\n", 1); 1693 camera3::CameraTraces::dump(fd, args); 1694 1695 // change logging level 1696 int n = args.size(); 1697 for (int i = 0; i + 1 < n; i++) { 1698 String16 verboseOption("-v"); 1699 if (args[i] == verboseOption) { 1700 String8 levelStr(args[i+1]); 1701 int level = atoi(levelStr.string()); 1702 result = String8::format("\nSetting log level to %d.\n", level); 1703 setLogLevel(level); 1704 write(fd, result.string(), result.size()); 1705 } 1706 } 1707 1708 } 1709 return NO_ERROR; 1710} 1711 1712/*virtual*/void CameraService::binderDied( 1713 const wp<IBinder> &who) { 1714 1715 /** 1716 * While tempting to promote the wp<IBinder> into a sp, 1717 * it's actually not supported by the binder driver 1718 */ 1719 1720 ALOGV("java clients' binder died"); 1721 1722 sp<BasicClient> cameraClient = getClientByRemote(who); 1723 1724 if (cameraClient == 0) { 1725 ALOGV("java clients' binder death already cleaned up (normal case)"); 1726 return; 1727 } 1728 1729 ALOGW("Disconnecting camera client %p since the binder for it " 1730 "died (this pid %d)", cameraClient.get(), getCallingPid()); 1731 1732 cameraClient->disconnect(); 1733 1734} 1735 1736void CameraService::updateStatus(ICameraServiceListener::Status status, 1737 int32_t cameraId, 1738 const StatusVector *rejectSourceStates) { 1739 // do not lock mServiceLock here or can get into a deadlock from 1740 // connect() -> ProClient::disconnect -> updateStatus 1741 Mutex::Autolock lock(mStatusMutex); 1742 1743 ICameraServiceListener::Status oldStatus = mStatusList[cameraId]; 1744 1745 mStatusList[cameraId] = status; 1746 1747 if (oldStatus != status) { 1748 ALOGV("%s: Status has changed for camera ID %d from 0x%x to 0x%x", 1749 __FUNCTION__, cameraId, (uint32_t)oldStatus, (uint32_t)status); 1750 1751 if (oldStatus == ICameraServiceListener::STATUS_NOT_PRESENT && 1752 (status != ICameraServiceListener::STATUS_PRESENT && 1753 status != ICameraServiceListener::STATUS_ENUMERATING)) { 1754 1755 ALOGW("%s: From NOT_PRESENT can only transition into PRESENT" 1756 " or ENUMERATING", __FUNCTION__); 1757 mStatusList[cameraId] = oldStatus; 1758 return; 1759 } 1760 1761 if (rejectSourceStates != NULL) { 1762 const StatusVector &rejectList = *rejectSourceStates; 1763 StatusVector::const_iterator it = rejectList.begin(); 1764 1765 /** 1766 * Sometimes we want to conditionally do a transition. 1767 * For example if a client disconnects, we want to go to PRESENT 1768 * only if we weren't already in NOT_PRESENT or ENUMERATING. 1769 */ 1770 for (; it != rejectList.end(); ++it) { 1771 if (oldStatus == *it) { 1772 ALOGV("%s: Rejecting status transition for Camera ID %d, " 1773 " since the source state was was in one of the bad " 1774 " states.", __FUNCTION__, cameraId); 1775 mStatusList[cameraId] = oldStatus; 1776 return; 1777 } 1778 } 1779 } 1780 1781 /** 1782 * ProClients lose their exclusive lock. 1783 * - Done before the CameraClient can initialize the HAL device, 1784 * since we want to be able to close it before they get to initialize 1785 */ 1786 if (status == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1787 Vector<wp<ProClient> > proClients(mProClientList[cameraId]); 1788 Vector<wp<ProClient> >::const_iterator it; 1789 1790 for (it = proClients.begin(); it != proClients.end(); ++it) { 1791 sp<ProClient> proCl = it->promote(); 1792 if (proCl.get() != NULL) { 1793 proCl->onExclusiveLockStolen(); 1794 } 1795 } 1796 } 1797 1798 Vector<sp<ICameraServiceListener> >::const_iterator it; 1799 for (it = mListenerList.begin(); it != mListenerList.end(); ++it) { 1800 (*it)->onStatusChanged(status, cameraId); 1801 } 1802 } 1803} 1804 1805ICameraServiceListener::Status CameraService::getStatus(int cameraId) const { 1806 if (cameraId < 0 || cameraId >= MAX_CAMERAS) { 1807 ALOGE("%s: Invalid camera ID %d", __FUNCTION__, cameraId); 1808 return ICameraServiceListener::STATUS_UNKNOWN; 1809 } 1810 1811 Mutex::Autolock al(mStatusMutex); 1812 return mStatusList[cameraId]; 1813} 1814 1815}; // namespace android 1816