CameraService.cpp revision ceb388d6c03c38b96dc41c0ea4804b749aa077c4
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 client = new Camera2Client(this, cameraClient, 248 clientPackageName, cameraId, 249 facing, callingPid, clientUid, getpid()); 250 break; 251 case -1: 252 ALOGE("Invalid camera id %d", cameraId); 253 return NULL; 254 default: 255 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 256 return NULL; 257 } 258 259 if (client->initialize(mModule) != OK) { 260 return NULL; 261 } 262 263 cameraClient->asBinder()->linkToDeath(this); 264 265 mClient[cameraId] = client; 266 LOG1("CameraService::connect X (id %d, this pid is %d)", cameraId, getpid()); 267 return client; 268} 269 270sp<IProCameraUser> CameraService::connect( 271 const sp<IProCameraCallbacks>& cameraCb, 272 int cameraId) 273{ 274 int callingPid = getCallingPid(); 275 276 LOG1("CameraService::connectPro E (pid %d, id %d)", callingPid, cameraId); 277 278 if (!mModule) { 279 ALOGE("Camera HAL module not loaded"); 280 return NULL; 281 } 282 283 sp<ProClient> client; 284 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 285 ALOGE("CameraService::connectPro X (pid %d) rejected (invalid cameraId %d).", 286 callingPid, cameraId); 287 return NULL; 288 } 289 290 char value[PROPERTY_VALUE_MAX]; 291 property_get("sys.secpolicy.camera.disabled", value, "0"); 292 if (strcmp(value, "1") == 0) { 293 // Camera is disabled by DevicePolicyManager. 294 ALOGI("Camera is disabled. connect X (pid %d) rejected", callingPid); 295 return NULL; 296 } 297 298 int facing = -1; 299 int deviceVersion = getDeviceVersion(cameraId, &facing); 300 301 switch(deviceVersion) { 302 case CAMERA_DEVICE_API_VERSION_1_0: 303 ALOGE("Camera id %d uses HALv1, doesn't support ProCamera", cameraId); 304 return NULL; 305 break; 306 case CAMERA_DEVICE_API_VERSION_2_0: 307 case CAMERA_DEVICE_API_VERSION_2_1: 308 client = new ProCamera2Client(this, cameraCb, String16(), 309 cameraId, facing, callingPid, USE_CALLING_UID, getpid()); 310 break; 311 case -1: 312 ALOGE("Invalid camera id %d", cameraId); 313 return NULL; 314 default: 315 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 316 return NULL; 317 } 318 319 if (client->initialize(mModule) != OK) { 320 return NULL; 321 } 322 323 mProClientList[cameraId].push(client); 324 325 cameraCb->asBinder()->linkToDeath(this); 326 327 LOG1("CameraService::connectPro X (id %d, this pid is %d)", cameraId, 328 getpid()); 329 return client; 330 331 332 return NULL; 333} 334 335void CameraService::removeClientByRemote(const wp<IBinder>& remoteBinder) { 336 int callingPid = getCallingPid(); 337 LOG1("CameraService::removeClientByRemote E (pid %d)", callingPid); 338 339 // Declare this before the lock to make absolutely sure the 340 // destructor won't be called with the lock held. 341 Mutex::Autolock lock(mServiceLock); 342 343 int outIndex; 344 sp<Client> client = findClientUnsafe(remoteBinder, outIndex); 345 346 if (client != 0) { 347 // Found our camera, clear and leave. 348 LOG1("removeClient: clear camera %d", outIndex); 349 mClient[outIndex].clear(); 350 351 client->unlinkToDeath(this); 352 } else { 353 354 sp<ProClient> clientPro = findProClientUnsafe(remoteBinder); 355 356 if (clientPro != NULL) { 357 // Found our camera, clear and leave. 358 LOG1("removeClient: clear pro %p", clientPro.get()); 359 360 clientPro->getRemoteCallback()->asBinder()->unlinkToDeath(this); 361 } 362 } 363 364 LOG1("CameraService::removeClientByRemote X (pid %d)", callingPid); 365} 366 367sp<CameraService::ProClient> CameraService::findProClientUnsafe( 368 const wp<IBinder>& cameraCallbacksRemote) 369{ 370 sp<ProClient> clientPro; 371 372 for (int i = 0; i < mNumberOfCameras; ++i) { 373 Vector<size_t> removeIdx; 374 375 for (size_t j = 0; j < mProClientList[i].size(); ++j) { 376 wp<ProClient> cl = mProClientList[i][j]; 377 378 sp<ProClient> clStrong = cl.promote(); 379 if (clStrong != NULL && clStrong->getRemote() == cameraCallbacksRemote) { 380 clientPro = clStrong; 381 break; 382 } else if (clStrong == NULL) { 383 // mark to clean up dead ptr 384 removeIdx.push(j); 385 } 386 } 387 388 // remove stale ptrs (in reverse so the indices dont change) 389 for (ssize_t j = (ssize_t)removeIdx.size() - 1; j >= 0; --j) { 390 mProClientList[i].removeAt(removeIdx[j]); 391 } 392 393 } 394 395 return clientPro; 396} 397 398sp<CameraService::Client> CameraService::findClientUnsafe( 399 const wp<IBinder>& cameraClient, int& outIndex) { 400 sp<Client> client; 401 402 for (int i = 0; i < mNumberOfCameras; i++) { 403 404 // This happens when we have already disconnected (or this is 405 // just another unused camera). 406 if (mClient[i] == 0) continue; 407 408 // Promote mClient. It can fail if we are called from this path: 409 // Client::~Client() -> disconnect() -> removeClientByRemote(). 410 client = mClient[i].promote(); 411 412 // Clean up stale client entry 413 if (client == NULL) { 414 mClient[i].clear(); 415 continue; 416 } 417 418 if (cameraClient == client->getCameraClient()->asBinder()) { 419 // Found our camera 420 outIndex = i; 421 return client; 422 } 423 } 424 425 outIndex = -1; 426 return NULL; 427} 428 429CameraService::Client* CameraService::getClientByIdUnsafe(int cameraId) { 430 if (cameraId < 0 || cameraId >= mNumberOfCameras) return NULL; 431 return mClient[cameraId].unsafe_get(); 432} 433 434Mutex* CameraService::getClientLockById(int cameraId) { 435 if (cameraId < 0 || cameraId >= mNumberOfCameras) return NULL; 436 return &mClientLock[cameraId]; 437} 438 439sp<CameraService::BasicClient> CameraService::getClientByRemote( 440 const wp<IBinder>& cameraClient) { 441 442 // Declare this before the lock to make absolutely sure the 443 // destructor won't be called with the lock held. 444 sp<BasicClient> client; 445 446 Mutex::Autolock lock(mServiceLock); 447 448 int outIndex; 449 client = findClientUnsafe(cameraClient, outIndex); 450 451 return client; 452} 453 454status_t CameraService::onTransact( 455 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) { 456 // Permission checks 457 switch (code) { 458 case BnCameraService::CONNECT: 459 case BnCameraService::CONNECT_PRO: 460 const int pid = getCallingPid(); 461 const int self_pid = getpid(); 462 if (pid != self_pid) { 463 // we're called from a different process, do the real check 464 if (!checkCallingPermission( 465 String16("android.permission.CAMERA"))) { 466 const int uid = getCallingUid(); 467 ALOGE("Permission Denial: " 468 "can't use the camera pid=%d, uid=%d", pid, uid); 469 return PERMISSION_DENIED; 470 } 471 } 472 break; 473 } 474 475 return BnCameraService::onTransact(code, data, reply, flags); 476} 477 478// The reason we need this busy bit is a new CameraService::connect() request 479// may come in while the previous Client's destructor has not been run or is 480// still running. If the last strong reference of the previous Client is gone 481// but the destructor has not been finished, we should not allow the new Client 482// to be created because we need to wait for the previous Client to tear down 483// the hardware first. 484void CameraService::setCameraBusy(int cameraId) { 485 android_atomic_write(1, &mBusy[cameraId]); 486 487 ALOGV("setCameraBusy cameraId=%d", cameraId); 488} 489 490void CameraService::setCameraFree(int cameraId) { 491 android_atomic_write(0, &mBusy[cameraId]); 492 493 ALOGV("setCameraFree cameraId=%d", cameraId); 494} 495 496// We share the media players for shutter and recording sound for all clients. 497// A reference count is kept to determine when we will actually release the 498// media players. 499 500MediaPlayer* CameraService::newMediaPlayer(const char *file) { 501 MediaPlayer* mp = new MediaPlayer(); 502 if (mp->setDataSource(file, NULL) == NO_ERROR) { 503 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 504 mp->prepare(); 505 } else { 506 ALOGE("Failed to load CameraService sounds: %s", file); 507 return NULL; 508 } 509 return mp; 510} 511 512void CameraService::loadSound() { 513 Mutex::Autolock lock(mSoundLock); 514 LOG1("CameraService::loadSound ref=%d", mSoundRef); 515 if (mSoundRef++) return; 516 517 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 518 mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 519} 520 521void CameraService::releaseSound() { 522 Mutex::Autolock lock(mSoundLock); 523 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 524 if (--mSoundRef) return; 525 526 for (int i = 0; i < NUM_SOUNDS; i++) { 527 if (mSoundPlayer[i] != 0) { 528 mSoundPlayer[i]->disconnect(); 529 mSoundPlayer[i].clear(); 530 } 531 } 532} 533 534void CameraService::playSound(sound_kind kind) { 535 LOG1("playSound(%d)", kind); 536 Mutex::Autolock lock(mSoundLock); 537 sp<MediaPlayer> player = mSoundPlayer[kind]; 538 if (player != 0) { 539 player->seekTo(0); 540 player->start(); 541 } 542} 543 544// ---------------------------------------------------------------------------- 545 546CameraService::Client::Client(const sp<CameraService>& cameraService, 547 const sp<ICameraClient>& cameraClient, 548 const String16& clientPackageName, 549 int cameraId, int cameraFacing, 550 int clientPid, uid_t clientUid, 551 int servicePid) : 552 CameraService::BasicClient(cameraService, cameraClient->asBinder(), 553 clientPackageName, 554 cameraId, cameraFacing, 555 clientPid, clientUid, 556 servicePid) 557{ 558 int callingPid = getCallingPid(); 559 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 560 561 mCameraClient = cameraClient; 562 563 cameraService->setCameraBusy(cameraId); 564 cameraService->loadSound(); 565 566 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 567} 568 569// tear down the client 570CameraService::Client::~Client() { 571 mDestructionStarted = true; 572 573 mCameraService->releaseSound(); 574 finishCameraOps(); 575 // unconditionally disconnect. function is idempotent 576 Client::disconnect(); 577} 578 579CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 580 const sp<IBinder>& remoteCallback, 581 const String16& clientPackageName, 582 int cameraId, int cameraFacing, 583 int clientPid, uid_t clientUid, 584 int servicePid): 585 mClientPackageName(clientPackageName) 586{ 587 mCameraService = cameraService; 588 mRemoteCallback = remoteCallback; 589 mCameraId = cameraId; 590 mCameraFacing = cameraFacing; 591 mClientPid = clientPid; 592 mClientUid = clientUid; 593 mServicePid = servicePid; 594 mOpsActive = false; 595 mDestructionStarted = false; 596} 597 598CameraService::BasicClient::~BasicClient() { 599 mDestructionStarted = true; 600} 601 602void CameraService::BasicClient::disconnect() { 603 mCameraService->removeClientByRemote(mRemoteCallback); 604} 605 606status_t CameraService::BasicClient::startCameraOps() { 607 int32_t res; 608 609 mOpsCallback = new OpsCallback(this); 610 611 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 612 mClientPackageName, mOpsCallback); 613 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 614 mClientUid, mClientPackageName); 615 616 if (res != AppOpsManager::MODE_ALLOWED) { 617 ALOGI("Camera %d: Access for \"%s\" has been revoked", 618 mCameraId, String8(mClientPackageName).string()); 619 return PERMISSION_DENIED; 620 } 621 mOpsActive = true; 622 return OK; 623} 624 625status_t CameraService::BasicClient::finishCameraOps() { 626 if (mOpsActive) { 627 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 628 mClientPackageName); 629 mOpsActive = false; 630 } 631 mAppOpsManager.stopWatchingMode(mOpsCallback); 632 mOpsCallback.clear(); 633 634 return OK; 635} 636 637void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 638 String8 name(packageName); 639 String8 myName(mClientPackageName); 640 641 if (op != AppOpsManager::OP_CAMERA) { 642 ALOGW("Unexpected app ops notification received: %d", op); 643 return; 644 } 645 646 int32_t res; 647 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 648 mClientUid, mClientPackageName); 649 ALOGV("checkOp returns: %d, %s ", res, 650 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 651 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 652 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 653 "UNKNOWN"); 654 655 if (res != AppOpsManager::MODE_ALLOWED) { 656 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 657 myName.string()); 658 // Reset the client PID to allow server-initiated disconnect, 659 // and to prevent further calls by client. 660 mClientPid = getCallingPid(); 661 notifyError(); 662 disconnect(); 663 } 664} 665 666// ---------------------------------------------------------------------------- 667 668Mutex* CameraService::Client::getClientLockFromCookie(void* user) { 669 return gCameraService->getClientLockById((int) user); 670} 671 672// Provide client pointer for callbacks. Client lock returned from getClientLockFromCookie should 673// be acquired for this to be safe 674CameraService::Client* CameraService::Client::getClientFromCookie(void* user) { 675 Client* client = gCameraService->getClientByIdUnsafe((int) user); 676 677 // This could happen if the Client is in the process of shutting down (the 678 // last strong reference is gone, but the destructor hasn't finished 679 // stopping the hardware). 680 if (client == NULL) return NULL; 681 682 // destruction already started, so should not be accessed 683 if (client->mDestructionStarted) return NULL; 684 685 return client; 686} 687 688void CameraService::Client::notifyError() { 689 mCameraClient->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 690} 691 692// NOTE: function is idempotent 693void CameraService::Client::disconnect() { 694 BasicClient::disconnect(); 695 mCameraService->setCameraFree(mCameraId); 696} 697 698CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 699 mClient(client) { 700} 701 702void CameraService::Client::OpsCallback::opChanged(int32_t op, 703 const String16& packageName) { 704 sp<BasicClient> client = mClient.promote(); 705 if (client != NULL) { 706 client->opChanged(op, packageName); 707 } 708} 709 710// ---------------------------------------------------------------------------- 711// IProCamera 712// ---------------------------------------------------------------------------- 713 714CameraService::ProClient::ProClient(const sp<CameraService>& cameraService, 715 const sp<IProCameraCallbacks>& remoteCallback, 716 const String16& clientPackageName, 717 int cameraId, 718 int cameraFacing, 719 int clientPid, 720 uid_t clientUid, 721 int servicePid) 722 : CameraService::BasicClient(cameraService, remoteCallback->asBinder(), 723 clientPackageName, cameraId, cameraFacing, 724 clientPid, clientUid, servicePid) 725{ 726 mRemoteCallback = remoteCallback; 727} 728 729CameraService::ProClient::~ProClient() { 730 mDestructionStarted = true; 731 732 ProClient::disconnect(); 733} 734 735status_t CameraService::ProClient::connect(const sp<IProCameraCallbacks>& callbacks) { 736 ALOGE("%s: not implemented yet", __FUNCTION__); 737 738 return INVALID_OPERATION; 739} 740 741void CameraService::ProClient::disconnect() { 742 BasicClient::disconnect(); 743} 744 745status_t CameraService::ProClient::initialize(camera_module_t* module) 746{ 747 ALOGW("%s: not implemented yet", __FUNCTION__); 748 return OK; 749} 750 751status_t CameraService::ProClient::exclusiveTryLock() { 752 ALOGE("%s: not implemented yet", __FUNCTION__); 753 return INVALID_OPERATION; 754} 755 756status_t CameraService::ProClient::exclusiveLock() { 757 ALOGE("%s: not implemented yet", __FUNCTION__); 758 return INVALID_OPERATION; 759} 760 761status_t CameraService::ProClient::exclusiveUnlock() { 762 ALOGE("%s: not implemented yet", __FUNCTION__); 763 return INVALID_OPERATION; 764} 765 766bool CameraService::ProClient::hasExclusiveLock() { 767 ALOGE("%s: not implemented yet", __FUNCTION__); 768 return false; 769} 770 771status_t CameraService::ProClient::submitRequest(camera_metadata_t* request, bool streaming) { 772 ALOGE("%s: not implemented yet", __FUNCTION__); 773 774 free_camera_metadata(request); 775 776 return INVALID_OPERATION; 777} 778 779status_t CameraService::ProClient::cancelRequest(int requestId) { 780 ALOGE("%s: not implemented yet", __FUNCTION__); 781 782 return INVALID_OPERATION; 783} 784 785status_t CameraService::ProClient::requestStream(int streamId) { 786 ALOGE("%s: not implemented yet", __FUNCTION__); 787 788 return INVALID_OPERATION; 789} 790 791status_t CameraService::ProClient::cancelStream(int streamId) { 792 ALOGE("%s: not implemented yet", __FUNCTION__); 793 794 return INVALID_OPERATION; 795} 796 797void CameraService::ProClient::notifyError() { 798 ALOGE("%s: not implemented yet", __FUNCTION__); 799} 800 801// ---------------------------------------------------------------------------- 802 803static const int kDumpLockRetries = 50; 804static const int kDumpLockSleep = 60000; 805 806static bool tryLock(Mutex& mutex) 807{ 808 bool locked = false; 809 for (int i = 0; i < kDumpLockRetries; ++i) { 810 if (mutex.tryLock() == NO_ERROR) { 811 locked = true; 812 break; 813 } 814 usleep(kDumpLockSleep); 815 } 816 return locked; 817} 818 819status_t CameraService::dump(int fd, const Vector<String16>& args) { 820 String8 result; 821 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 822 result.appendFormat("Permission Denial: " 823 "can't dump CameraService from pid=%d, uid=%d\n", 824 getCallingPid(), 825 getCallingUid()); 826 write(fd, result.string(), result.size()); 827 } else { 828 bool locked = tryLock(mServiceLock); 829 // failed to lock - CameraService is probably deadlocked 830 if (!locked) { 831 result.append("CameraService may be deadlocked\n"); 832 write(fd, result.string(), result.size()); 833 } 834 835 bool hasClient = false; 836 if (!mModule) { 837 result = String8::format("No camera module available!\n"); 838 write(fd, result.string(), result.size()); 839 return NO_ERROR; 840 } 841 842 result = String8::format("Camera module HAL API version: 0x%x\n", 843 mModule->common.hal_api_version); 844 result.appendFormat("Camera module API version: 0x%x\n", 845 mModule->common.module_api_version); 846 result.appendFormat("Camera module name: %s\n", 847 mModule->common.name); 848 result.appendFormat("Camera module author: %s\n", 849 mModule->common.author); 850 result.appendFormat("Number of camera devices: %d\n\n", mNumberOfCameras); 851 write(fd, result.string(), result.size()); 852 for (int i = 0; i < mNumberOfCameras; i++) { 853 result = String8::format("Camera %d static information:\n", i); 854 camera_info info; 855 856 status_t rc = mModule->get_camera_info(i, &info); 857 if (rc != OK) { 858 result.appendFormat(" Error reading static information!\n"); 859 write(fd, result.string(), result.size()); 860 } else { 861 result.appendFormat(" Facing: %s\n", 862 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 863 result.appendFormat(" Orientation: %d\n", info.orientation); 864 int deviceVersion; 865 if (mModule->common.module_api_version < 866 CAMERA_MODULE_API_VERSION_2_0) { 867 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 868 } else { 869 deviceVersion = info.device_version; 870 } 871 result.appendFormat(" Device version: 0x%x\n", deviceVersion); 872 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { 873 result.appendFormat(" Device static metadata:\n"); 874 write(fd, result.string(), result.size()); 875 dump_indented_camera_metadata(info.static_camera_characteristics, 876 fd, 2, 4); 877 } else { 878 write(fd, result.string(), result.size()); 879 } 880 } 881 882 sp<Client> client = mClient[i].promote(); 883 if (client == 0) { 884 result = String8::format(" Device is closed, no client instance\n"); 885 write(fd, result.string(), result.size()); 886 continue; 887 } 888 hasClient = true; 889 result = String8::format(" Device is open. Client instance dump:\n"); 890 write(fd, result.string(), result.size()); 891 client->dump(fd, args); 892 } 893 if (!hasClient) { 894 result = String8::format("\nNo active camera clients yet.\n"); 895 write(fd, result.string(), result.size()); 896 } 897 898 if (locked) mServiceLock.unlock(); 899 900 // change logging level 901 int n = args.size(); 902 for (int i = 0; i + 1 < n; i++) { 903 String16 verboseOption("-v"); 904 if (args[i] == verboseOption) { 905 String8 levelStr(args[i+1]); 906 int level = atoi(levelStr.string()); 907 result = String8::format("\nSetting log level to %d.\n", level); 908 setLogLevel(level); 909 write(fd, result.string(), result.size()); 910 } 911 } 912 913 } 914 return NO_ERROR; 915} 916 917/*virtual*/void CameraService::binderDied( 918 const wp<IBinder> &who) { 919 920 /** 921 * While tempting to promote the wp<IBinder> into a sp, 922 * it's actually not supported by the binder driver 923 */ 924 925 ALOGV("java clients' binder died"); 926 927 sp<BasicClient> cameraClient = getClientByRemote(who); 928 929 if (cameraClient == 0) { 930 ALOGV("java clients' binder death already cleaned up (normal case)"); 931 return; 932 } 933 934 ALOGW("Disconnecting camera client %p since the binder for it " 935 "died (this pid %d)", cameraClient.get(), getCallingPid()); 936 937 cameraClient->disconnect(); 938 939} 940 941}; // namespace android 942