CameraService.cpp revision b99c5b8eebb35133a08c46b015624bd4c4a6c477
1/* 2** 3** Copyright (C) 2008, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18#define LOG_TAG "CameraService" 19//#define LOG_NDEBUG 0 20 21#include <stdio.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/mediaplayer.h> 36#include <utils/Errors.h> 37#include <utils/Log.h> 38#include <utils/String16.h> 39 40#include "CameraService.h" 41#include "CameraClient.h" 42#include "Camera2Client.h" 43#include "ProCamera2Client.h" 44 45namespace android { 46 47// ---------------------------------------------------------------------------- 48// Logging support -- this is for debugging only 49// Use "adb shell dumpsys media.camera -v 1" to change it. 50volatile int32_t gLogLevel = 0; 51 52#define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__); 53#define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__); 54 55static void setLogLevel(int level) { 56 android_atomic_write(level, &gLogLevel); 57} 58 59// ---------------------------------------------------------------------------- 60 61static int getCallingPid() { 62 return IPCThreadState::self()->getCallingPid(); 63} 64 65static int getCallingUid() { 66 return IPCThreadState::self()->getCallingUid(); 67} 68 69// ---------------------------------------------------------------------------- 70 71// This is ugly and only safe if we never re-create the CameraService, but 72// should be ok for now. 73static CameraService *gCameraService; 74 75CameraService::CameraService() 76 :mSoundRef(0), mModule(0) 77{ 78 ALOGI("CameraService started (pid=%d)", getpid()); 79 gCameraService = this; 80} 81 82void CameraService::onFirstRef() 83{ 84 LOG1("CameraService::onFirstRef"); 85 86 BnCameraService::onFirstRef(); 87 88 if (hw_get_module(CAMERA_HARDWARE_MODULE_ID, 89 (const hw_module_t **)&mModule) < 0) { 90 ALOGE("Could not load camera HAL module"); 91 mNumberOfCameras = 0; 92 } 93 else { 94 ALOGI("Loaded \"%s\" camera module", mModule->common.name); 95 mNumberOfCameras = mModule->get_number_of_cameras(); 96 if (mNumberOfCameras > MAX_CAMERAS) { 97 ALOGE("Number of cameras(%d) > MAX_CAMERAS(%d).", 98 mNumberOfCameras, MAX_CAMERAS); 99 mNumberOfCameras = MAX_CAMERAS; 100 } 101 for (int i = 0; i < mNumberOfCameras; i++) { 102 setCameraFree(i); 103 } 104 } 105} 106 107CameraService::~CameraService() { 108 for (int i = 0; i < mNumberOfCameras; i++) { 109 if (mBusy[i]) { 110 ALOGE("camera %d is still in use in destructor!", i); 111 } 112 } 113 114 gCameraService = NULL; 115} 116 117int32_t CameraService::getNumberOfCameras() { 118 return mNumberOfCameras; 119} 120 121status_t CameraService::getCameraInfo(int cameraId, 122 struct CameraInfo* cameraInfo) { 123 if (!mModule) { 124 return NO_INIT; 125 } 126 127 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 128 return BAD_VALUE; 129 } 130 131 struct camera_info info; 132 status_t rc = mModule->get_camera_info(cameraId, &info); 133 cameraInfo->facing = info.facing; 134 cameraInfo->orientation = info.orientation; 135 return rc; 136} 137 138int CameraService::getDeviceVersion(int cameraId, int* facing) { 139 struct camera_info info; 140 if (mModule->get_camera_info(cameraId, &info) != OK) { 141 return -1; 142 } 143 144 int deviceVersion; 145 if (mModule->common.module_api_version >= CAMERA_MODULE_API_VERSION_2_0) { 146 deviceVersion = info.device_version; 147 } else { 148 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 149 } 150 151 if (facing) { 152 *facing = info.facing; 153 } 154 155 return deviceVersion; 156} 157 158sp<ICamera> CameraService::connect( 159 const sp<ICameraClient>& cameraClient, 160 int cameraId, 161 const String16& clientPackageName, 162 int clientUid) { 163 164 String8 clientName8(clientPackageName); 165 int callingPid = getCallingPid(); 166 167 LOG1("CameraService::connect E (pid %d \"%s\", id %d)", callingPid, 168 clientName8.string(), cameraId); 169 170 if (clientUid == USE_CALLING_UID) { 171 clientUid = getCallingUid(); 172 } else { 173 // We only trust our own process to forward client UIDs 174 if (callingPid != getpid()) { 175 ALOGE("CameraService::connect X (pid %d) rejected (don't trust clientUid)", 176 callingPid); 177 return NULL; 178 } 179 } 180 181 if (!mModule) { 182 ALOGE("Camera HAL module not loaded"); 183 return NULL; 184 } 185 186 sp<Client> client; 187 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 188 ALOGE("CameraService::connect X (pid %d) rejected (invalid cameraId %d).", 189 callingPid, cameraId); 190 return NULL; 191 } 192 193 char value[PROPERTY_VALUE_MAX]; 194 property_get("sys.secpolicy.camera.disabled", value, "0"); 195 if (strcmp(value, "1") == 0) { 196 // Camera is disabled by DevicePolicyManager. 197 ALOGI("Camera is disabled. connect X (pid %d) rejected", callingPid); 198 return NULL; 199 } 200 201 Mutex::Autolock lock(mServiceLock); 202 if (mClient[cameraId] != 0) { 203 client = mClient[cameraId].promote(); 204 if (client != 0) { 205 if (cameraClient->asBinder() == client->getCameraClient()->asBinder()) { 206 LOG1("CameraService::connect X (pid %d) (the same client)", 207 callingPid); 208 return client; 209 } else { 210 // TODOSC: need to support 1 regular client, multiple shared clients here 211 ALOGW("CameraService::connect X (pid %d) rejected (existing client).", 212 callingPid); 213 return NULL; 214 } 215 } 216 mClient[cameraId].clear(); 217 } 218 219 /* 220 mBusy is set to false as the last step of the Client destructor, 221 after which it is guaranteed that the Client destructor has finished ( 222 including any inherited destructors) 223 224 We only need this for a Client subclasses since we don't allow 225 multiple Clents to be opened concurrently, but multiple BasicClient 226 would be fine 227 */ 228 if (mBusy[cameraId]) { 229 230 ALOGW("CameraService::connect X (pid %d, \"%s\") rejected" 231 " (camera %d is still busy).", callingPid, 232 clientName8.string(), cameraId); 233 return NULL; 234 } 235 236 int facing = -1; 237 int deviceVersion = getDeviceVersion(cameraId, &facing); 238 239 switch(deviceVersion) { 240 case CAMERA_DEVICE_API_VERSION_1_0: 241 client = new CameraClient(this, cameraClient, 242 clientPackageName, cameraId, 243 facing, callingPid, clientUid, getpid()); 244 break; 245 case CAMERA_DEVICE_API_VERSION_2_0: 246 case CAMERA_DEVICE_API_VERSION_2_1: 247 case CAMERA_DEVICE_API_VERSION_3_0: 248 client = new Camera2Client(this, cameraClient, 249 clientPackageName, cameraId, 250 facing, callingPid, clientUid, getpid(), 251 deviceVersion); 252 break; 253 case -1: 254 ALOGE("Invalid camera id %d", cameraId); 255 return NULL; 256 default: 257 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 258 return NULL; 259 } 260 261 if (client->initialize(mModule) != OK) { 262 return NULL; 263 } 264 265 cameraClient->asBinder()->linkToDeath(this); 266 267 mClient[cameraId] = client; 268 LOG1("CameraService::connect X (id %d, this pid is %d)", cameraId, getpid()); 269 return client; 270} 271 272sp<IProCameraUser> CameraService::connect( 273 const sp<IProCameraCallbacks>& cameraCb, 274 int cameraId, 275 const String16& clientPackageName, 276 int clientUid) 277{ 278 int callingPid = getCallingPid(); 279 280 // TODO: use clientPackageName and clientUid with appOpsMangr 281 282 LOG1("CameraService::connectPro E (pid %d, id %d)", callingPid, cameraId); 283 284 if (!mModule) { 285 ALOGE("Camera HAL module not loaded"); 286 return NULL; 287 } 288 289 sp<ProClient> client; 290 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 291 ALOGE("CameraService::connectPro X (pid %d) rejected (invalid cameraId %d).", 292 callingPid, cameraId); 293 return NULL; 294 } 295 296 char value[PROPERTY_VALUE_MAX]; 297 property_get("sys.secpolicy.camera.disabled", value, "0"); 298 if (strcmp(value, "1") == 0) { 299 // Camera is disabled by DevicePolicyManager. 300 ALOGI("Camera is disabled. connect X (pid %d) rejected", callingPid); 301 return NULL; 302 } 303 304 int facing = -1; 305 int deviceVersion = getDeviceVersion(cameraId, &facing); 306 307 switch(deviceVersion) { 308 case CAMERA_DEVICE_API_VERSION_1_0: 309 ALOGE("Camera id %d uses HALv1, doesn't support ProCamera", cameraId); 310 return NULL; 311 break; 312 case CAMERA_DEVICE_API_VERSION_2_0: 313 case CAMERA_DEVICE_API_VERSION_2_1: 314 client = new ProCamera2Client(this, cameraCb, String16(), 315 cameraId, facing, callingPid, USE_CALLING_UID, getpid()); 316 break; 317 case -1: 318 ALOGE("Invalid camera id %d", cameraId); 319 return NULL; 320 default: 321 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 322 return NULL; 323 } 324 325 if (client->initialize(mModule) != OK) { 326 return NULL; 327 } 328 329 mProClientList[cameraId].push(client); 330 331 cameraCb->asBinder()->linkToDeath(this); 332 333 LOG1("CameraService::connectPro X (id %d, this pid is %d)", cameraId, 334 getpid()); 335 return client; 336 337 338 return NULL; 339} 340 341void CameraService::removeClientByRemote(const wp<IBinder>& remoteBinder) { 342 int callingPid = getCallingPid(); 343 LOG1("CameraService::removeClientByRemote E (pid %d)", callingPid); 344 345 // Declare this before the lock to make absolutely sure the 346 // destructor won't be called with the lock held. 347 Mutex::Autolock lock(mServiceLock); 348 349 int outIndex; 350 sp<Client> client = findClientUnsafe(remoteBinder, outIndex); 351 352 if (client != 0) { 353 // Found our camera, clear and leave. 354 LOG1("removeClient: clear camera %d", outIndex); 355 mClient[outIndex].clear(); 356 357 client->unlinkToDeath(this); 358 } else { 359 360 sp<ProClient> clientPro = findProClientUnsafe(remoteBinder); 361 362 if (clientPro != NULL) { 363 // Found our camera, clear and leave. 364 LOG1("removeClient: clear pro %p", clientPro.get()); 365 366 clientPro->getRemoteCallback()->asBinder()->unlinkToDeath(this); 367 } 368 } 369 370 LOG1("CameraService::removeClientByRemote X (pid %d)", callingPid); 371} 372 373sp<CameraService::ProClient> CameraService::findProClientUnsafe( 374 const wp<IBinder>& cameraCallbacksRemote) 375{ 376 sp<ProClient> clientPro; 377 378 for (int i = 0; i < mNumberOfCameras; ++i) { 379 Vector<size_t> removeIdx; 380 381 for (size_t j = 0; j < mProClientList[i].size(); ++j) { 382 wp<ProClient> cl = mProClientList[i][j]; 383 384 sp<ProClient> clStrong = cl.promote(); 385 if (clStrong != NULL && clStrong->getRemote() == cameraCallbacksRemote) { 386 clientPro = clStrong; 387 break; 388 } else if (clStrong == NULL) { 389 // mark to clean up dead ptr 390 removeIdx.push(j); 391 } 392 } 393 394 // remove stale ptrs (in reverse so the indices dont change) 395 for (ssize_t j = (ssize_t)removeIdx.size() - 1; j >= 0; --j) { 396 mProClientList[i].removeAt(removeIdx[j]); 397 } 398 399 } 400 401 return clientPro; 402} 403 404sp<CameraService::Client> CameraService::findClientUnsafe( 405 const wp<IBinder>& cameraClient, int& outIndex) { 406 sp<Client> client; 407 408 for (int i = 0; i < mNumberOfCameras; i++) { 409 410 // This happens when we have already disconnected (or this is 411 // just another unused camera). 412 if (mClient[i] == 0) continue; 413 414 // Promote mClient. It can fail if we are called from this path: 415 // Client::~Client() -> disconnect() -> removeClientByRemote(). 416 client = mClient[i].promote(); 417 418 // Clean up stale client entry 419 if (client == NULL) { 420 mClient[i].clear(); 421 continue; 422 } 423 424 if (cameraClient == client->getCameraClient()->asBinder()) { 425 // Found our camera 426 outIndex = i; 427 return client; 428 } 429 } 430 431 outIndex = -1; 432 return NULL; 433} 434 435CameraService::Client* CameraService::getClientByIdUnsafe(int cameraId) { 436 if (cameraId < 0 || cameraId >= mNumberOfCameras) return NULL; 437 return mClient[cameraId].unsafe_get(); 438} 439 440Mutex* CameraService::getClientLockById(int cameraId) { 441 if (cameraId < 0 || cameraId >= mNumberOfCameras) return NULL; 442 return &mClientLock[cameraId]; 443} 444 445sp<CameraService::BasicClient> CameraService::getClientByRemote( 446 const wp<IBinder>& cameraClient) { 447 448 // Declare this before the lock to make absolutely sure the 449 // destructor won't be called with the lock held. 450 sp<BasicClient> client; 451 452 Mutex::Autolock lock(mServiceLock); 453 454 int outIndex; 455 client = findClientUnsafe(cameraClient, outIndex); 456 457 return client; 458} 459 460status_t CameraService::onTransact( 461 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) { 462 // Permission checks 463 switch (code) { 464 case BnCameraService::CONNECT: 465 case BnCameraService::CONNECT_PRO: 466 const int pid = getCallingPid(); 467 const int self_pid = getpid(); 468 if (pid != self_pid) { 469 // we're called from a different process, do the real check 470 if (!checkCallingPermission( 471 String16("android.permission.CAMERA"))) { 472 const int uid = getCallingUid(); 473 ALOGE("Permission Denial: " 474 "can't use the camera pid=%d, uid=%d", pid, uid); 475 return PERMISSION_DENIED; 476 } 477 } 478 break; 479 } 480 481 return BnCameraService::onTransact(code, data, reply, flags); 482} 483 484// The reason we need this busy bit is a new CameraService::connect() request 485// may come in while the previous Client's destructor has not been run or is 486// still running. If the last strong reference of the previous Client is gone 487// but the destructor has not been finished, we should not allow the new Client 488// to be created because we need to wait for the previous Client to tear down 489// the hardware first. 490void CameraService::setCameraBusy(int cameraId) { 491 android_atomic_write(1, &mBusy[cameraId]); 492 493 ALOGV("setCameraBusy cameraId=%d", cameraId); 494} 495 496void CameraService::setCameraFree(int cameraId) { 497 android_atomic_write(0, &mBusy[cameraId]); 498 499 ALOGV("setCameraFree cameraId=%d", cameraId); 500} 501 502// We share the media players for shutter and recording sound for all clients. 503// A reference count is kept to determine when we will actually release the 504// media players. 505 506MediaPlayer* CameraService::newMediaPlayer(const char *file) { 507 MediaPlayer* mp = new MediaPlayer(); 508 if (mp->setDataSource(file, NULL) == NO_ERROR) { 509 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 510 mp->prepare(); 511 } else { 512 ALOGE("Failed to load CameraService sounds: %s", file); 513 return NULL; 514 } 515 return mp; 516} 517 518void CameraService::loadSound() { 519 Mutex::Autolock lock(mSoundLock); 520 LOG1("CameraService::loadSound ref=%d", mSoundRef); 521 if (mSoundRef++) return; 522 523 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 524 mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 525} 526 527void CameraService::releaseSound() { 528 Mutex::Autolock lock(mSoundLock); 529 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 530 if (--mSoundRef) return; 531 532 for (int i = 0; i < NUM_SOUNDS; i++) { 533 if (mSoundPlayer[i] != 0) { 534 mSoundPlayer[i]->disconnect(); 535 mSoundPlayer[i].clear(); 536 } 537 } 538} 539 540void CameraService::playSound(sound_kind kind) { 541 LOG1("playSound(%d)", kind); 542 Mutex::Autolock lock(mSoundLock); 543 sp<MediaPlayer> player = mSoundPlayer[kind]; 544 if (player != 0) { 545 player->seekTo(0); 546 player->start(); 547 } 548} 549 550// ---------------------------------------------------------------------------- 551 552CameraService::Client::Client(const sp<CameraService>& cameraService, 553 const sp<ICameraClient>& cameraClient, 554 const String16& clientPackageName, 555 int cameraId, int cameraFacing, 556 int clientPid, uid_t clientUid, 557 int servicePid) : 558 CameraService::BasicClient(cameraService, cameraClient->asBinder(), 559 clientPackageName, 560 cameraId, cameraFacing, 561 clientPid, clientUid, 562 servicePid) 563{ 564 int callingPid = getCallingPid(); 565 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 566 567 mCameraClient = cameraClient; 568 569 cameraService->setCameraBusy(cameraId); 570 cameraService->loadSound(); 571 572 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 573} 574 575// tear down the client 576CameraService::Client::~Client() { 577 mDestructionStarted = true; 578 579 mCameraService->releaseSound(); 580 finishCameraOps(); 581 // unconditionally disconnect. function is idempotent 582 Client::disconnect(); 583} 584 585CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 586 const sp<IBinder>& remoteCallback, 587 const String16& clientPackageName, 588 int cameraId, int cameraFacing, 589 int clientPid, uid_t clientUid, 590 int servicePid): 591 mClientPackageName(clientPackageName) 592{ 593 mCameraService = cameraService; 594 mRemoteCallback = remoteCallback; 595 mCameraId = cameraId; 596 mCameraFacing = cameraFacing; 597 mClientPid = clientPid; 598 mClientUid = clientUid; 599 mServicePid = servicePid; 600 mOpsActive = false; 601 mDestructionStarted = false; 602} 603 604CameraService::BasicClient::~BasicClient() { 605 mDestructionStarted = true; 606} 607 608void CameraService::BasicClient::disconnect() { 609 mCameraService->removeClientByRemote(mRemoteCallback); 610} 611 612status_t CameraService::BasicClient::startCameraOps() { 613 int32_t res; 614 615 mOpsCallback = new OpsCallback(this); 616 617 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 618 mClientPackageName, mOpsCallback); 619 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 620 mClientUid, mClientPackageName); 621 622 if (res != AppOpsManager::MODE_ALLOWED) { 623 ALOGI("Camera %d: Access for \"%s\" has been revoked", 624 mCameraId, String8(mClientPackageName).string()); 625 return PERMISSION_DENIED; 626 } 627 mOpsActive = true; 628 return OK; 629} 630 631status_t CameraService::BasicClient::finishCameraOps() { 632 if (mOpsActive) { 633 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 634 mClientPackageName); 635 mOpsActive = false; 636 } 637 mAppOpsManager.stopWatchingMode(mOpsCallback); 638 mOpsCallback.clear(); 639 640 return OK; 641} 642 643void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 644 String8 name(packageName); 645 String8 myName(mClientPackageName); 646 647 if (op != AppOpsManager::OP_CAMERA) { 648 ALOGW("Unexpected app ops notification received: %d", op); 649 return; 650 } 651 652 int32_t res; 653 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 654 mClientUid, mClientPackageName); 655 ALOGV("checkOp returns: %d, %s ", res, 656 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 657 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 658 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 659 "UNKNOWN"); 660 661 if (res != AppOpsManager::MODE_ALLOWED) { 662 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 663 myName.string()); 664 // Reset the client PID to allow server-initiated disconnect, 665 // and to prevent further calls by client. 666 mClientPid = getCallingPid(); 667 notifyError(); 668 disconnect(); 669 } 670} 671 672// ---------------------------------------------------------------------------- 673 674Mutex* CameraService::Client::getClientLockFromCookie(void* user) { 675 return gCameraService->getClientLockById((int) user); 676} 677 678// Provide client pointer for callbacks. Client lock returned from getClientLockFromCookie should 679// be acquired for this to be safe 680CameraService::Client* CameraService::Client::getClientFromCookie(void* user) { 681 Client* client = gCameraService->getClientByIdUnsafe((int) user); 682 683 // This could happen if the Client is in the process of shutting down (the 684 // last strong reference is gone, but the destructor hasn't finished 685 // stopping the hardware). 686 if (client == NULL) return NULL; 687 688 // destruction already started, so should not be accessed 689 if (client->mDestructionStarted) return NULL; 690 691 return client; 692} 693 694void CameraService::Client::notifyError() { 695 mCameraClient->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 696} 697 698// NOTE: function is idempotent 699void CameraService::Client::disconnect() { 700 BasicClient::disconnect(); 701 mCameraService->setCameraFree(mCameraId); 702} 703 704CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 705 mClient(client) { 706} 707 708void CameraService::Client::OpsCallback::opChanged(int32_t op, 709 const String16& packageName) { 710 sp<BasicClient> client = mClient.promote(); 711 if (client != NULL) { 712 client->opChanged(op, packageName); 713 } 714} 715 716// ---------------------------------------------------------------------------- 717// IProCamera 718// ---------------------------------------------------------------------------- 719 720CameraService::ProClient::ProClient(const sp<CameraService>& cameraService, 721 const sp<IProCameraCallbacks>& remoteCallback, 722 const String16& clientPackageName, 723 int cameraId, 724 int cameraFacing, 725 int clientPid, 726 uid_t clientUid, 727 int servicePid) 728 : CameraService::BasicClient(cameraService, remoteCallback->asBinder(), 729 clientPackageName, cameraId, cameraFacing, 730 clientPid, clientUid, servicePid) 731{ 732 mRemoteCallback = remoteCallback; 733} 734 735CameraService::ProClient::~ProClient() { 736 mDestructionStarted = true; 737 738 ProClient::disconnect(); 739} 740 741status_t CameraService::ProClient::connect(const sp<IProCameraCallbacks>& callbacks) { 742 ALOGE("%s: not implemented yet", __FUNCTION__); 743 744 return INVALID_OPERATION; 745} 746 747void CameraService::ProClient::disconnect() { 748 BasicClient::disconnect(); 749} 750 751status_t CameraService::ProClient::initialize(camera_module_t* module) 752{ 753 ALOGW("%s: not implemented yet", __FUNCTION__); 754 return OK; 755} 756 757status_t CameraService::ProClient::exclusiveTryLock() { 758 ALOGE("%s: not implemented yet", __FUNCTION__); 759 return INVALID_OPERATION; 760} 761 762status_t CameraService::ProClient::exclusiveLock() { 763 ALOGE("%s: not implemented yet", __FUNCTION__); 764 return INVALID_OPERATION; 765} 766 767status_t CameraService::ProClient::exclusiveUnlock() { 768 ALOGE("%s: not implemented yet", __FUNCTION__); 769 return INVALID_OPERATION; 770} 771 772bool CameraService::ProClient::hasExclusiveLock() { 773 ALOGE("%s: not implemented yet", __FUNCTION__); 774 return false; 775} 776 777status_t CameraService::ProClient::submitRequest(camera_metadata_t* request, bool streaming) { 778 ALOGE("%s: not implemented yet", __FUNCTION__); 779 780 free_camera_metadata(request); 781 782 return INVALID_OPERATION; 783} 784 785status_t CameraService::ProClient::cancelRequest(int requestId) { 786 ALOGE("%s: not implemented yet", __FUNCTION__); 787 788 return INVALID_OPERATION; 789} 790 791status_t CameraService::ProClient::requestStream(int streamId) { 792 ALOGE("%s: not implemented yet", __FUNCTION__); 793 794 return INVALID_OPERATION; 795} 796 797status_t CameraService::ProClient::cancelStream(int streamId) { 798 ALOGE("%s: not implemented yet", __FUNCTION__); 799 800 return INVALID_OPERATION; 801} 802 803void CameraService::ProClient::notifyError() { 804 ALOGE("%s: not implemented yet", __FUNCTION__); 805} 806 807// ---------------------------------------------------------------------------- 808 809static const int kDumpLockRetries = 50; 810static const int kDumpLockSleep = 60000; 811 812static bool tryLock(Mutex& mutex) 813{ 814 bool locked = false; 815 for (int i = 0; i < kDumpLockRetries; ++i) { 816 if (mutex.tryLock() == NO_ERROR) { 817 locked = true; 818 break; 819 } 820 usleep(kDumpLockSleep); 821 } 822 return locked; 823} 824 825status_t CameraService::dump(int fd, const Vector<String16>& args) { 826 String8 result; 827 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 828 result.appendFormat("Permission Denial: " 829 "can't dump CameraService from pid=%d, uid=%d\n", 830 getCallingPid(), 831 getCallingUid()); 832 write(fd, result.string(), result.size()); 833 } else { 834 bool locked = tryLock(mServiceLock); 835 // failed to lock - CameraService is probably deadlocked 836 if (!locked) { 837 result.append("CameraService may be deadlocked\n"); 838 write(fd, result.string(), result.size()); 839 } 840 841 bool hasClient = false; 842 if (!mModule) { 843 result = String8::format("No camera module available!\n"); 844 write(fd, result.string(), result.size()); 845 return NO_ERROR; 846 } 847 848 result = String8::format("Camera module HAL API version: 0x%x\n", 849 mModule->common.hal_api_version); 850 result.appendFormat("Camera module API version: 0x%x\n", 851 mModule->common.module_api_version); 852 result.appendFormat("Camera module name: %s\n", 853 mModule->common.name); 854 result.appendFormat("Camera module author: %s\n", 855 mModule->common.author); 856 result.appendFormat("Number of camera devices: %d\n\n", mNumberOfCameras); 857 write(fd, result.string(), result.size()); 858 for (int i = 0; i < mNumberOfCameras; i++) { 859 result = String8::format("Camera %d static information:\n", i); 860 camera_info info; 861 862 status_t rc = mModule->get_camera_info(i, &info); 863 if (rc != OK) { 864 result.appendFormat(" Error reading static information!\n"); 865 write(fd, result.string(), result.size()); 866 } else { 867 result.appendFormat(" Facing: %s\n", 868 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 869 result.appendFormat(" Orientation: %d\n", info.orientation); 870 int deviceVersion; 871 if (mModule->common.module_api_version < 872 CAMERA_MODULE_API_VERSION_2_0) { 873 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 874 } else { 875 deviceVersion = info.device_version; 876 } 877 result.appendFormat(" Device version: 0x%x\n", deviceVersion); 878 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { 879 result.appendFormat(" Device static metadata:\n"); 880 write(fd, result.string(), result.size()); 881 dump_indented_camera_metadata(info.static_camera_characteristics, 882 fd, 2, 4); 883 } else { 884 write(fd, result.string(), result.size()); 885 } 886 } 887 888 sp<Client> client = mClient[i].promote(); 889 if (client == 0) { 890 result = String8::format(" Device is closed, no client instance\n"); 891 write(fd, result.string(), result.size()); 892 continue; 893 } 894 hasClient = true; 895 result = String8::format(" Device is open. Client instance dump:\n"); 896 write(fd, result.string(), result.size()); 897 client->dump(fd, args); 898 } 899 if (!hasClient) { 900 result = String8::format("\nNo active camera clients yet.\n"); 901 write(fd, result.string(), result.size()); 902 } 903 904 if (locked) mServiceLock.unlock(); 905 906 // change logging level 907 int n = args.size(); 908 for (int i = 0; i + 1 < n; i++) { 909 String16 verboseOption("-v"); 910 if (args[i] == verboseOption) { 911 String8 levelStr(args[i+1]); 912 int level = atoi(levelStr.string()); 913 result = String8::format("\nSetting log level to %d.\n", level); 914 setLogLevel(level); 915 write(fd, result.string(), result.size()); 916 } 917 } 918 919 } 920 return NO_ERROR; 921} 922 923/*virtual*/void CameraService::binderDied( 924 const wp<IBinder> &who) { 925 926 /** 927 * While tempting to promote the wp<IBinder> into a sp, 928 * it's actually not supported by the binder driver 929 */ 930 931 ALOGV("java clients' binder died"); 932 933 sp<BasicClient> cameraClient = getClientByRemote(who); 934 935 if (cameraClient == 0) { 936 ALOGV("java clients' binder death already cleaned up (normal case)"); 937 return; 938 } 939 940 ALOGW("Disconnecting camera client %p since the binder for it " 941 "died (this pid %d)", cameraClient.get(), getCallingPid()); 942 943 cameraClient->disconnect(); 944 945} 946 947}; // namespace android 948