| /* |
| ** |
| ** Copyright (C) 2008, The Android Open Source Project |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| |
| #define LOG_TAG "CameraService" |
| //#define LOG_NDEBUG 0 |
| |
| #include <stdio.h> |
| #include <sys/types.h> |
| #include <pthread.h> |
| |
| #include <binder/AppOpsManager.h> |
| #include <binder/IPCThreadState.h> |
| #include <binder/IServiceManager.h> |
| #include <binder/MemoryBase.h> |
| #include <binder/MemoryHeapBase.h> |
| #include <cutils/atomic.h> |
| #include <cutils/properties.h> |
| #include <gui/Surface.h> |
| #include <hardware/hardware.h> |
| #include <media/AudioSystem.h> |
| #include <media/mediaplayer.h> |
| #include <utils/Errors.h> |
| #include <utils/Log.h> |
| #include <utils/String16.h> |
| |
| #include "CameraService.h" |
| #include "CameraClient.h" |
| #include "Camera2Client.h" |
| #include "ProCamera2Client.h" |
| |
| namespace android { |
| |
| // ---------------------------------------------------------------------------- |
| // Logging support -- this is for debugging only |
| // Use "adb shell dumpsys media.camera -v 1" to change it. |
| volatile int32_t gLogLevel = 0; |
| |
| #define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__); |
| #define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__); |
| |
| static void setLogLevel(int level) { |
| android_atomic_write(level, &gLogLevel); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static int getCallingPid() { |
| return IPCThreadState::self()->getCallingPid(); |
| } |
| |
| static int getCallingUid() { |
| return IPCThreadState::self()->getCallingUid(); |
| } |
| |
| extern "C" { |
| static void camera_device_status_change( |
| const struct camera_module_callbacks* callbacks, |
| int camera_id, |
| int new_status) { |
| sp<CameraService> cs = const_cast<CameraService*>( |
| static_cast<const CameraService*>(callbacks)); |
| |
| cs->onDeviceStatusChanged( |
| camera_id, |
| new_status); |
| } |
| } // extern "C" |
| |
| // ---------------------------------------------------------------------------- |
| |
| // This is ugly and only safe if we never re-create the CameraService, but |
| // should be ok for now. |
| static CameraService *gCameraService; |
| |
| CameraService::CameraService() |
| :mSoundRef(0), mModule(0) |
| { |
| ALOGI("CameraService started (pid=%d)", getpid()); |
| gCameraService = this; |
| |
| for (size_t i = 0; i < MAX_CAMERAS; ++i) { |
| mStatusList[i] = ICameraServiceListener::STATUS_PRESENT; |
| } |
| |
| this->camera_device_status_change = android::camera_device_status_change; |
| } |
| |
| void CameraService::onFirstRef() |
| { |
| LOG1("CameraService::onFirstRef"); |
| |
| BnCameraService::onFirstRef(); |
| |
| if (hw_get_module(CAMERA_HARDWARE_MODULE_ID, |
| (const hw_module_t **)&mModule) < 0) { |
| ALOGE("Could not load camera HAL module"); |
| mNumberOfCameras = 0; |
| } |
| else { |
| ALOGI("Loaded \"%s\" camera module", mModule->common.name); |
| mNumberOfCameras = mModule->get_number_of_cameras(); |
| if (mNumberOfCameras > MAX_CAMERAS) { |
| ALOGE("Number of cameras(%d) > MAX_CAMERAS(%d).", |
| mNumberOfCameras, MAX_CAMERAS); |
| mNumberOfCameras = MAX_CAMERAS; |
| } |
| for (int i = 0; i < mNumberOfCameras; i++) { |
| setCameraFree(i); |
| } |
| |
| if (mModule->common.module_api_version >= |
| CAMERA_MODULE_API_VERSION_2_1) { |
| mModule->set_callbacks(this); |
| } |
| } |
| } |
| |
| CameraService::~CameraService() { |
| for (int i = 0; i < mNumberOfCameras; i++) { |
| if (mBusy[i]) { |
| ALOGE("camera %d is still in use in destructor!", i); |
| } |
| } |
| |
| gCameraService = NULL; |
| } |
| |
| void CameraService::onDeviceStatusChanged(int cameraId, |
| int newStatus) |
| { |
| ALOGI("%s: Status changed for cameraId=%d, newStatus=%d", __FUNCTION__, |
| cameraId, newStatus); |
| |
| if (cameraId < 0 || cameraId >= MAX_CAMERAS) { |
| ALOGE("%s: Bad camera ID %d", __FUNCTION__, cameraId); |
| return; |
| } |
| |
| if ((int)getStatus(cameraId) == newStatus) { |
| ALOGE("%s: State transition to the same status 0x%x not allowed", |
| __FUNCTION__, (uint32_t)newStatus); |
| return; |
| } |
| |
| /* don't do this in updateStatus |
| since it is also called from connect and we could get into a deadlock */ |
| if (newStatus == CAMERA_DEVICE_STATUS_NOT_PRESENT) { |
| Vector<sp<BasicClient> > clientsToDisconnect; |
| { |
| Mutex::Autolock al(mServiceLock); |
| |
| /* Find all clients that we need to disconnect */ |
| sp<Client> client = mClient[cameraId].promote(); |
| if (client.get() != NULL) { |
| clientsToDisconnect.push_back(client); |
| } |
| |
| int i = cameraId; |
| for (size_t j = 0; j < mProClientList[i].size(); ++j) { |
| sp<ProClient> cl = mProClientList[i][j].promote(); |
| if (cl != NULL) { |
| clientsToDisconnect.push_back(cl); |
| } |
| } |
| } |
| |
| /* now disconnect them. don't hold the lock |
| or we can get into a deadlock */ |
| |
| for (size_t i = 0; i < clientsToDisconnect.size(); ++i) { |
| sp<BasicClient> client = clientsToDisconnect[i]; |
| |
| client->disconnect(); |
| /** |
| * The remote app will no longer be able to call methods on the |
| * client since the client PID will be reset to 0 |
| */ |
| } |
| |
| ALOGV("%s: After unplug, disconnected %d clients", |
| __FUNCTION__, clientsToDisconnect.size()); |
| } |
| |
| updateStatus( |
| static_cast<ICameraServiceListener::Status>(newStatus), cameraId); |
| |
| } |
| |
| int32_t CameraService::getNumberOfCameras() { |
| return mNumberOfCameras; |
| } |
| |
| status_t CameraService::getCameraInfo(int cameraId, |
| struct CameraInfo* cameraInfo) { |
| if (!mModule) { |
| return NO_INIT; |
| } |
| |
| if (cameraId < 0 || cameraId >= mNumberOfCameras) { |
| return BAD_VALUE; |
| } |
| |
| struct camera_info info; |
| status_t rc = mModule->get_camera_info(cameraId, &info); |
| cameraInfo->facing = info.facing; |
| cameraInfo->orientation = info.orientation; |
| return rc; |
| } |
| |
| int CameraService::getDeviceVersion(int cameraId, int* facing) { |
| struct camera_info info; |
| if (mModule->get_camera_info(cameraId, &info) != OK) { |
| return -1; |
| } |
| |
| int deviceVersion; |
| if (mModule->common.module_api_version >= CAMERA_MODULE_API_VERSION_2_0) { |
| deviceVersion = info.device_version; |
| } else { |
| deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; |
| } |
| |
| if (facing) { |
| *facing = info.facing; |
| } |
| |
| return deviceVersion; |
| } |
| |
| bool CameraService::isValidCameraId(int cameraId) { |
| int facing; |
| int deviceVersion = getDeviceVersion(cameraId, &facing); |
| |
| switch(deviceVersion) { |
| case CAMERA_DEVICE_API_VERSION_1_0: |
| case CAMERA_DEVICE_API_VERSION_2_0: |
| case CAMERA_DEVICE_API_VERSION_2_1: |
| case CAMERA_DEVICE_API_VERSION_3_0: |
| return true; |
| default: |
| return false; |
| } |
| |
| return false; |
| } |
| |
| bool CameraService::validateConnect(int cameraId, |
| /*inout*/ |
| int& clientUid) const { |
| |
| int callingPid = getCallingPid(); |
| |
| if (clientUid == USE_CALLING_UID) { |
| clientUid = getCallingUid(); |
| } else { |
| // We only trust our own process to forward client UIDs |
| if (callingPid != getpid()) { |
| ALOGE("CameraService::connect X (pid %d) rejected (don't trust clientUid)", |
| callingPid); |
| return false; |
| } |
| } |
| |
| if (!mModule) { |
| ALOGE("Camera HAL module not loaded"); |
| return false; |
| } |
| |
| if (cameraId < 0 || cameraId >= mNumberOfCameras) { |
| ALOGE("CameraService::connect X (pid %d) rejected (invalid cameraId %d).", |
| callingPid, cameraId); |
| return false; |
| } |
| |
| char value[PROPERTY_VALUE_MAX]; |
| property_get("sys.secpolicy.camera.disabled", value, "0"); |
| if (strcmp(value, "1") == 0) { |
| // Camera is disabled by DevicePolicyManager. |
| ALOGI("Camera is disabled. connect X (pid %d) rejected", callingPid); |
| return false; |
| } |
| |
| ICameraServiceListener::Status currentStatus = getStatus(cameraId); |
| if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { |
| ALOGI("Camera is not plugged in," |
| " connect X (pid %d) rejected", callingPid); |
| return false; |
| } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) { |
| ALOGI("Camera is enumerating," |
| " connect X (pid %d) rejected", callingPid); |
| return false; |
| } |
| // Else don't check for STATUS_NOT_AVAILABLE. |
| // -- It's done implicitly in canConnectUnsafe /w the mBusy array |
| |
| return true; |
| } |
| |
| bool CameraService::canConnectUnsafe(int cameraId, |
| const String16& clientPackageName, |
| const sp<IBinder>& remoteCallback, |
| sp<Client> &client) { |
| String8 clientName8(clientPackageName); |
| int callingPid = getCallingPid(); |
| |
| if (mClient[cameraId] != 0) { |
| client = mClient[cameraId].promote(); |
| if (client != 0) { |
| if (remoteCallback == client->getRemoteCallback()->asBinder()) { |
| LOG1("CameraService::connect X (pid %d) (the same client)", |
| callingPid); |
| return true; |
| } else { |
| // TODOSC: need to support 1 regular client, |
| // multiple shared clients here |
| ALOGW("CameraService::connect X (pid %d) rejected" |
| " (existing client).", callingPid); |
| return false; |
| } |
| } |
| mClient[cameraId].clear(); |
| } |
| |
| /* |
| mBusy is set to false as the last step of the Client destructor, |
| after which it is guaranteed that the Client destructor has finished ( |
| including any inherited destructors) |
| |
| We only need this for a Client subclasses since we don't allow |
| multiple Clents to be opened concurrently, but multiple BasicClient |
| would be fine |
| */ |
| if (mBusy[cameraId]) { |
| ALOGW("CameraService::connect X (pid %d, \"%s\") rejected" |
| " (camera %d is still busy).", callingPid, |
| clientName8.string(), cameraId); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| sp<ICamera> CameraService::connect( |
| const sp<ICameraClient>& cameraClient, |
| int cameraId, |
| const String16& clientPackageName, |
| int clientUid) { |
| |
| String8 clientName8(clientPackageName); |
| int callingPid = getCallingPid(); |
| |
| LOG1("CameraService::connect E (pid %d \"%s\", id %d)", callingPid, |
| clientName8.string(), cameraId); |
| |
| if (!validateConnect(cameraId, /*inout*/clientUid)) { |
| return NULL; |
| } |
| |
| sp<Client> client; |
| |
| { |
| Mutex::Autolock lock(mServiceLock); |
| if (!canConnectUnsafe(cameraId, clientPackageName, |
| cameraClient->asBinder(), |
| /*out*/client)) { |
| return NULL; |
| } else if (client.get() != NULL) { |
| return client; |
| } |
| |
| int facing = -1; |
| int deviceVersion = getDeviceVersion(cameraId, &facing); |
| |
| // If there are other non-exclusive users of the camera, |
| // this will tear them down before we can reuse the camera |
| if (isValidCameraId(cameraId)) { |
| // transition from PRESENT -> NOT_AVAILABLE |
| updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, |
| cameraId); |
| } |
| |
| switch(deviceVersion) { |
| case CAMERA_DEVICE_API_VERSION_1_0: |
| client = new CameraClient(this, cameraClient, |
| clientPackageName, cameraId, |
| facing, callingPid, clientUid, getpid()); |
| break; |
| case CAMERA_DEVICE_API_VERSION_2_0: |
| case CAMERA_DEVICE_API_VERSION_2_1: |
| case CAMERA_DEVICE_API_VERSION_3_0: |
| client = new Camera2Client(this, cameraClient, |
| clientPackageName, cameraId, |
| facing, callingPid, clientUid, getpid(), |
| deviceVersion); |
| break; |
| case -1: |
| ALOGE("Invalid camera id %d", cameraId); |
| return NULL; |
| default: |
| ALOGE("Unknown camera device HAL version: %d", deviceVersion); |
| return NULL; |
| } |
| |
| if (!connectFinishUnsafe(client, client->asBinder())) { |
| // this is probably not recoverable.. maybe the client can try again |
| // OK: we can only get here if we were originally in PRESENT state |
| updateStatus(ICameraServiceListener::STATUS_PRESENT, cameraId); |
| |
| return NULL; |
| } |
| |
| mClient[cameraId] = client; |
| LOG1("CameraService::connect X (id %d, this pid is %d)", cameraId, |
| getpid()); |
| } |
| // important: release the mutex here so the client can call back |
| // into the service from its destructor (can be at the end of the call) |
| |
| return client; |
| } |
| |
| bool CameraService::connectFinishUnsafe(const sp<BasicClient>& client, |
| const sp<IBinder>& clientBinder) { |
| if (client->initialize(mModule) != OK) { |
| return false; |
| } |
| |
| clientBinder->linkToDeath(this); |
| |
| return true; |
| } |
| |
| sp<IProCameraUser> CameraService::connect( |
| const sp<IProCameraCallbacks>& cameraCb, |
| int cameraId, |
| const String16& clientPackageName, |
| int clientUid) |
| { |
| String8 clientName8(clientPackageName); |
| int callingPid = getCallingPid(); |
| |
| LOG1("CameraService::connectPro E (pid %d \"%s\", id %d)", callingPid, |
| clientName8.string(), cameraId); |
| |
| if (!validateConnect(cameraId, /*inout*/clientUid)) { |
| return NULL; |
| } |
| |
| sp<ProClient> client; |
| { |
| Mutex::Autolock lock(mServiceLock); |
| { |
| sp<Client> client; |
| if (!canConnectUnsafe(cameraId, clientPackageName, |
| cameraCb->asBinder(), |
| /*out*/client)) { |
| return NULL; |
| } |
| } |
| |
| int facing = -1; |
| int deviceVersion = getDeviceVersion(cameraId, &facing); |
| |
| switch(deviceVersion) { |
| case CAMERA_DEVICE_API_VERSION_1_0: |
| ALOGE("Camera id %d uses HALv1, doesn't support ProCamera", |
| cameraId); |
| return NULL; |
| break; |
| case CAMERA_DEVICE_API_VERSION_2_0: |
| case CAMERA_DEVICE_API_VERSION_2_1: |
| client = new ProCamera2Client(this, cameraCb, String16(), |
| cameraId, facing, callingPid, USE_CALLING_UID, getpid()); |
| break; |
| case -1: |
| ALOGE("Invalid camera id %d", cameraId); |
| return NULL; |
| default: |
| ALOGE("Unknown camera device HAL version: %d", deviceVersion); |
| return NULL; |
| } |
| |
| if (!connectFinishUnsafe(client, client->asBinder())) { |
| return NULL; |
| } |
| |
| mProClientList[cameraId].push(client); |
| |
| LOG1("CameraService::connectPro X (id %d, this pid is %d)", cameraId, |
| getpid()); |
| } |
| // important: release the mutex here so the client can call back |
| // into the service from its destructor (can be at the end of the call) |
| |
| return client; |
| } |
| |
| status_t CameraService::addListener( |
| const sp<ICameraServiceListener>& listener) { |
| ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); |
| |
| Mutex::Autolock lock(mServiceLock); |
| |
| Vector<sp<ICameraServiceListener> >::iterator it, end; |
| for (it = mListenerList.begin(); it != mListenerList.end(); ++it) { |
| if ((*it)->asBinder() == listener->asBinder()) { |
| ALOGW("%s: Tried to add listener %p which was already subscribed", |
| __FUNCTION__, listener.get()); |
| return ALREADY_EXISTS; |
| } |
| } |
| |
| mListenerList.push_back(listener); |
| |
| /* Immediately signal current status to this listener only */ |
| { |
| Mutex::Autolock m(mStatusMutex) ; |
| int numCams = getNumberOfCameras(); |
| for (int i = 0; i < numCams; ++i) { |
| listener->onStatusChanged(mStatusList[i], i); |
| } |
| } |
| |
| return OK; |
| } |
| status_t CameraService::removeListener( |
| const sp<ICameraServiceListener>& listener) { |
| ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); |
| |
| Mutex::Autolock lock(mServiceLock); |
| |
| Vector<sp<ICameraServiceListener> >::iterator it; |
| for (it = mListenerList.begin(); it != mListenerList.end(); ++it) { |
| if ((*it)->asBinder() == listener->asBinder()) { |
| mListenerList.erase(it); |
| return OK; |
| } |
| } |
| |
| ALOGW("%s: Tried to remove a listener %p which was not subscribed", |
| __FUNCTION__, listener.get()); |
| |
| return BAD_VALUE; |
| } |
| |
| void CameraService::removeClientByRemote(const wp<IBinder>& remoteBinder) { |
| int callingPid = getCallingPid(); |
| LOG1("CameraService::removeClientByRemote E (pid %d)", callingPid); |
| |
| // Declare this before the lock to make absolutely sure the |
| // destructor won't be called with the lock held. |
| Mutex::Autolock lock(mServiceLock); |
| |
| int outIndex; |
| sp<Client> client = findClientUnsafe(remoteBinder, outIndex); |
| |
| if (client != 0) { |
| // Found our camera, clear and leave. |
| LOG1("removeClient: clear camera %d", outIndex); |
| mClient[outIndex].clear(); |
| |
| client->unlinkToDeath(this); |
| } else { |
| |
| sp<ProClient> clientPro = findProClientUnsafe(remoteBinder); |
| |
| if (clientPro != NULL) { |
| // Found our camera, clear and leave. |
| LOG1("removeClient: clear pro %p", clientPro.get()); |
| |
| clientPro->getRemoteCallback()->asBinder()->unlinkToDeath(this); |
| } |
| } |
| |
| LOG1("CameraService::removeClientByRemote X (pid %d)", callingPid); |
| } |
| |
| sp<CameraService::ProClient> CameraService::findProClientUnsafe( |
| const wp<IBinder>& cameraCallbacksRemote) |
| { |
| sp<ProClient> clientPro; |
| |
| for (int i = 0; i < mNumberOfCameras; ++i) { |
| Vector<size_t> removeIdx; |
| |
| for (size_t j = 0; j < mProClientList[i].size(); ++j) { |
| wp<ProClient> cl = mProClientList[i][j]; |
| |
| sp<ProClient> clStrong = cl.promote(); |
| if (clStrong != NULL && clStrong->getRemote() == cameraCallbacksRemote) { |
| clientPro = clStrong; |
| break; |
| } else if (clStrong == NULL) { |
| // mark to clean up dead ptr |
| removeIdx.push(j); |
| } |
| } |
| |
| // remove stale ptrs (in reverse so the indices dont change) |
| for (ssize_t j = (ssize_t)removeIdx.size() - 1; j >= 0; --j) { |
| mProClientList[i].removeAt(removeIdx[j]); |
| } |
| |
| } |
| |
| return clientPro; |
| } |
| |
| sp<CameraService::Client> CameraService::findClientUnsafe( |
| const wp<IBinder>& cameraClient, int& outIndex) { |
| sp<Client> client; |
| |
| for (int i = 0; i < mNumberOfCameras; i++) { |
| |
| // This happens when we have already disconnected (or this is |
| // just another unused camera). |
| if (mClient[i] == 0) continue; |
| |
| // Promote mClient. It can fail if we are called from this path: |
| // Client::~Client() -> disconnect() -> removeClientByRemote(). |
| client = mClient[i].promote(); |
| |
| // Clean up stale client entry |
| if (client == NULL) { |
| mClient[i].clear(); |
| continue; |
| } |
| |
| if (cameraClient == client->getRemoteCallback()->asBinder()) { |
| // Found our camera |
| outIndex = i; |
| return client; |
| } |
| } |
| |
| outIndex = -1; |
| return NULL; |
| } |
| |
| CameraService::Client* CameraService::getClientByIdUnsafe(int cameraId) { |
| if (cameraId < 0 || cameraId >= mNumberOfCameras) return NULL; |
| return mClient[cameraId].unsafe_get(); |
| } |
| |
| Mutex* CameraService::getClientLockById(int cameraId) { |
| if (cameraId < 0 || cameraId >= mNumberOfCameras) return NULL; |
| return &mClientLock[cameraId]; |
| } |
| |
| sp<CameraService::BasicClient> CameraService::getClientByRemote( |
| const wp<IBinder>& cameraClient) { |
| |
| // Declare this before the lock to make absolutely sure the |
| // destructor won't be called with the lock held. |
| sp<BasicClient> client; |
| |
| Mutex::Autolock lock(mServiceLock); |
| |
| int outIndex; |
| client = findClientUnsafe(cameraClient, outIndex); |
| |
| return client; |
| } |
| |
| status_t CameraService::onTransact( |
| uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) { |
| // Permission checks |
| switch (code) { |
| case BnCameraService::CONNECT: |
| case BnCameraService::CONNECT_PRO: |
| const int pid = getCallingPid(); |
| const int self_pid = getpid(); |
| if (pid != self_pid) { |
| // we're called from a different process, do the real check |
| if (!checkCallingPermission( |
| String16("android.permission.CAMERA"))) { |
| const int uid = getCallingUid(); |
| ALOGE("Permission Denial: " |
| "can't use the camera pid=%d, uid=%d", pid, uid); |
| return PERMISSION_DENIED; |
| } |
| } |
| break; |
| } |
| |
| return BnCameraService::onTransact(code, data, reply, flags); |
| } |
| |
| // The reason we need this busy bit is a new CameraService::connect() request |
| // may come in while the previous Client's destructor has not been run or is |
| // still running. If the last strong reference of the previous Client is gone |
| // but the destructor has not been finished, we should not allow the new Client |
| // to be created because we need to wait for the previous Client to tear down |
| // the hardware first. |
| void CameraService::setCameraBusy(int cameraId) { |
| android_atomic_write(1, &mBusy[cameraId]); |
| |
| ALOGV("setCameraBusy cameraId=%d", cameraId); |
| } |
| |
| void CameraService::setCameraFree(int cameraId) { |
| android_atomic_write(0, &mBusy[cameraId]); |
| |
| ALOGV("setCameraFree cameraId=%d", cameraId); |
| } |
| |
| // We share the media players for shutter and recording sound for all clients. |
| // A reference count is kept to determine when we will actually release the |
| // media players. |
| |
| MediaPlayer* CameraService::newMediaPlayer(const char *file) { |
| MediaPlayer* mp = new MediaPlayer(); |
| if (mp->setDataSource(file, NULL) == NO_ERROR) { |
| mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); |
| mp->prepare(); |
| } else { |
| ALOGE("Failed to load CameraService sounds: %s", file); |
| return NULL; |
| } |
| return mp; |
| } |
| |
| void CameraService::loadSound() { |
| Mutex::Autolock lock(mSoundLock); |
| LOG1("CameraService::loadSound ref=%d", mSoundRef); |
| if (mSoundRef++) return; |
| |
| mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); |
| mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); |
| } |
| |
| void CameraService::releaseSound() { |
| Mutex::Autolock lock(mSoundLock); |
| LOG1("CameraService::releaseSound ref=%d", mSoundRef); |
| if (--mSoundRef) return; |
| |
| for (int i = 0; i < NUM_SOUNDS; i++) { |
| if (mSoundPlayer[i] != 0) { |
| mSoundPlayer[i]->disconnect(); |
| mSoundPlayer[i].clear(); |
| } |
| } |
| } |
| |
| void CameraService::playSound(sound_kind kind) { |
| LOG1("playSound(%d)", kind); |
| Mutex::Autolock lock(mSoundLock); |
| sp<MediaPlayer> player = mSoundPlayer[kind]; |
| if (player != 0) { |
| player->seekTo(0); |
| player->start(); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| CameraService::Client::Client(const sp<CameraService>& cameraService, |
| const sp<ICameraClient>& cameraClient, |
| const String16& clientPackageName, |
| int cameraId, int cameraFacing, |
| int clientPid, uid_t clientUid, |
| int servicePid) : |
| CameraService::BasicClient(cameraService, cameraClient->asBinder(), |
| clientPackageName, |
| cameraId, cameraFacing, |
| clientPid, clientUid, |
| servicePid) |
| { |
| int callingPid = getCallingPid(); |
| LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); |
| |
| mRemoteCallback = cameraClient; |
| |
| cameraService->setCameraBusy(cameraId); |
| cameraService->loadSound(); |
| |
| LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); |
| } |
| |
| // tear down the client |
| CameraService::Client::~Client() { |
| ALOGV("~Client"); |
| mDestructionStarted = true; |
| |
| mCameraService->releaseSound(); |
| // unconditionally disconnect. function is idempotent |
| Client::disconnect(); |
| } |
| |
| CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, |
| const sp<IBinder>& remoteCallback, |
| const String16& clientPackageName, |
| int cameraId, int cameraFacing, |
| int clientPid, uid_t clientUid, |
| int servicePid): |
| mClientPackageName(clientPackageName) |
| { |
| mCameraService = cameraService; |
| mRemoteBinder = remoteCallback; |
| mCameraId = cameraId; |
| mCameraFacing = cameraFacing; |
| mClientPid = clientPid; |
| mClientUid = clientUid; |
| mServicePid = servicePid; |
| mOpsActive = false; |
| mDestructionStarted = false; |
| } |
| |
| CameraService::BasicClient::~BasicClient() { |
| ALOGV("~BasicClient"); |
| mDestructionStarted = true; |
| } |
| |
| void CameraService::BasicClient::disconnect() { |
| ALOGV("BasicClient::disconnect"); |
| mCameraService->removeClientByRemote(mRemoteBinder); |
| // client shouldn't be able to call into us anymore |
| mClientPid = 0; |
| } |
| |
| status_t CameraService::BasicClient::startCameraOps() { |
| int32_t res; |
| |
| mOpsCallback = new OpsCallback(this); |
| |
| { |
| ALOGV("%s: Start camera ops, package name = %s, client UID = %d", |
| __FUNCTION__, String8(mClientPackageName).string(), mClientUid); |
| } |
| |
| mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, |
| mClientPackageName, mOpsCallback); |
| res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, |
| mClientUid, mClientPackageName); |
| |
| if (res != AppOpsManager::MODE_ALLOWED) { |
| ALOGI("Camera %d: Access for \"%s\" has been revoked", |
| mCameraId, String8(mClientPackageName).string()); |
| return PERMISSION_DENIED; |
| } |
| mOpsActive = true; |
| return OK; |
| } |
| |
| status_t CameraService::BasicClient::finishCameraOps() { |
| if (mOpsActive) { |
| mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, |
| mClientPackageName); |
| mOpsActive = false; |
| } |
| mAppOpsManager.stopWatchingMode(mOpsCallback); |
| mOpsCallback.clear(); |
| |
| return OK; |
| } |
| |
| void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { |
| String8 name(packageName); |
| String8 myName(mClientPackageName); |
| |
| if (op != AppOpsManager::OP_CAMERA) { |
| ALOGW("Unexpected app ops notification received: %d", op); |
| return; |
| } |
| |
| int32_t res; |
| res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, |
| mClientUid, mClientPackageName); |
| ALOGV("checkOp returns: %d, %s ", res, |
| res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : |
| res == AppOpsManager::MODE_IGNORED ? "IGNORED" : |
| res == AppOpsManager::MODE_ERRORED ? "ERRORED" : |
| "UNKNOWN"); |
| |
| if (res != AppOpsManager::MODE_ALLOWED) { |
| ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, |
| myName.string()); |
| // Reset the client PID to allow server-initiated disconnect, |
| // and to prevent further calls by client. |
| mClientPid = getCallingPid(); |
| notifyError(); |
| disconnect(); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| Mutex* CameraService::Client::getClientLockFromCookie(void* user) { |
| return gCameraService->getClientLockById((int) user); |
| } |
| |
| // Provide client pointer for callbacks. Client lock returned from getClientLockFromCookie should |
| // be acquired for this to be safe |
| CameraService::Client* CameraService::Client::getClientFromCookie(void* user) { |
| Client* client = gCameraService->getClientByIdUnsafe((int) user); |
| |
| // This could happen if the Client is in the process of shutting down (the |
| // last strong reference is gone, but the destructor hasn't finished |
| // stopping the hardware). |
| if (client == NULL) return NULL; |
| |
| // destruction already started, so should not be accessed |
| if (client->mDestructionStarted) return NULL; |
| |
| return client; |
| } |
| |
| void CameraService::Client::notifyError() { |
| mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); |
| } |
| |
| // NOTE: function is idempotent |
| void CameraService::Client::disconnect() { |
| ALOGV("Client::disconnect"); |
| BasicClient::disconnect(); |
| mCameraService->setCameraFree(mCameraId); |
| |
| StatusVector rejectSourceStates; |
| rejectSourceStates.push_back(ICameraServiceListener::STATUS_NOT_PRESENT); |
| rejectSourceStates.push_back(ICameraServiceListener::STATUS_ENUMERATING); |
| |
| // Transition to PRESENT if the camera is not in either of above 2 states |
| mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, |
| mCameraId, |
| &rejectSourceStates); |
| } |
| |
| CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): |
| mClient(client) { |
| } |
| |
| void CameraService::Client::OpsCallback::opChanged(int32_t op, |
| const String16& packageName) { |
| sp<BasicClient> client = mClient.promote(); |
| if (client != NULL) { |
| client->opChanged(op, packageName); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // IProCamera |
| // ---------------------------------------------------------------------------- |
| |
| CameraService::ProClient::ProClient(const sp<CameraService>& cameraService, |
| const sp<IProCameraCallbacks>& remoteCallback, |
| const String16& clientPackageName, |
| int cameraId, |
| int cameraFacing, |
| int clientPid, |
| uid_t clientUid, |
| int servicePid) |
| : CameraService::BasicClient(cameraService, remoteCallback->asBinder(), |
| clientPackageName, cameraId, cameraFacing, |
| clientPid, clientUid, servicePid) |
| { |
| mRemoteCallback = remoteCallback; |
| } |
| |
| CameraService::ProClient::~ProClient() { |
| } |
| |
| void CameraService::ProClient::notifyError() { |
| mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static const int kDumpLockRetries = 50; |
| static const int kDumpLockSleep = 60000; |
| |
| static bool tryLock(Mutex& mutex) |
| { |
| bool locked = false; |
| for (int i = 0; i < kDumpLockRetries; ++i) { |
| if (mutex.tryLock() == NO_ERROR) { |
| locked = true; |
| break; |
| } |
| usleep(kDumpLockSleep); |
| } |
| return locked; |
| } |
| |
| status_t CameraService::dump(int fd, const Vector<String16>& args) { |
| String8 result; |
| if (checkCallingPermission(String16("android.permission.DUMP")) == false) { |
| result.appendFormat("Permission Denial: " |
| "can't dump CameraService from pid=%d, uid=%d\n", |
| getCallingPid(), |
| getCallingUid()); |
| write(fd, result.string(), result.size()); |
| } else { |
| bool locked = tryLock(mServiceLock); |
| // failed to lock - CameraService is probably deadlocked |
| if (!locked) { |
| result.append("CameraService may be deadlocked\n"); |
| write(fd, result.string(), result.size()); |
| } |
| |
| bool hasClient = false; |
| if (!mModule) { |
| result = String8::format("No camera module available!\n"); |
| write(fd, result.string(), result.size()); |
| return NO_ERROR; |
| } |
| |
| result = String8::format("Camera module HAL API version: 0x%x\n", |
| mModule->common.hal_api_version); |
| result.appendFormat("Camera module API version: 0x%x\n", |
| mModule->common.module_api_version); |
| result.appendFormat("Camera module name: %s\n", |
| mModule->common.name); |
| result.appendFormat("Camera module author: %s\n", |
| mModule->common.author); |
| result.appendFormat("Number of camera devices: %d\n\n", mNumberOfCameras); |
| write(fd, result.string(), result.size()); |
| for (int i = 0; i < mNumberOfCameras; i++) { |
| result = String8::format("Camera %d static information:\n", i); |
| camera_info info; |
| |
| status_t rc = mModule->get_camera_info(i, &info); |
| if (rc != OK) { |
| result.appendFormat(" Error reading static information!\n"); |
| write(fd, result.string(), result.size()); |
| } else { |
| result.appendFormat(" Facing: %s\n", |
| info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); |
| result.appendFormat(" Orientation: %d\n", info.orientation); |
| int deviceVersion; |
| if (mModule->common.module_api_version < |
| CAMERA_MODULE_API_VERSION_2_0) { |
| deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; |
| } else { |
| deviceVersion = info.device_version; |
| } |
| result.appendFormat(" Device version: 0x%x\n", deviceVersion); |
| if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) { |
| result.appendFormat(" Device static metadata:\n"); |
| write(fd, result.string(), result.size()); |
| dump_indented_camera_metadata(info.static_camera_characteristics, |
| fd, 2, 4); |
| } else { |
| write(fd, result.string(), result.size()); |
| } |
| } |
| |
| sp<Client> client = mClient[i].promote(); |
| if (client == 0) { |
| result = String8::format(" Device is closed, no client instance\n"); |
| write(fd, result.string(), result.size()); |
| continue; |
| } |
| hasClient = true; |
| result = String8::format(" Device is open. Client instance dump:\n"); |
| write(fd, result.string(), result.size()); |
| client->dump(fd, args); |
| } |
| if (!hasClient) { |
| result = String8::format("\nNo active camera clients yet.\n"); |
| write(fd, result.string(), result.size()); |
| } |
| |
| if (locked) mServiceLock.unlock(); |
| |
| // change logging level |
| int n = args.size(); |
| for (int i = 0; i + 1 < n; i++) { |
| String16 verboseOption("-v"); |
| if (args[i] == verboseOption) { |
| String8 levelStr(args[i+1]); |
| int level = atoi(levelStr.string()); |
| result = String8::format("\nSetting log level to %d.\n", level); |
| setLogLevel(level); |
| write(fd, result.string(), result.size()); |
| } |
| } |
| |
| } |
| return NO_ERROR; |
| } |
| |
| /*virtual*/void CameraService::binderDied( |
| const wp<IBinder> &who) { |
| |
| /** |
| * While tempting to promote the wp<IBinder> into a sp, |
| * it's actually not supported by the binder driver |
| */ |
| |
| ALOGV("java clients' binder died"); |
| |
| sp<BasicClient> cameraClient = getClientByRemote(who); |
| |
| if (cameraClient == 0) { |
| ALOGV("java clients' binder death already cleaned up (normal case)"); |
| return; |
| } |
| |
| ALOGW("Disconnecting camera client %p since the binder for it " |
| "died (this pid %d)", cameraClient.get(), getCallingPid()); |
| |
| cameraClient->disconnect(); |
| |
| } |
| |
| void CameraService::updateStatus(ICameraServiceListener::Status status, |
| int32_t cameraId, |
| const StatusVector *rejectSourceStates) { |
| // do not lock mServiceLock here or can get into a deadlock from |
| // connect() -> ProClient::disconnect -> updateStatus |
| Mutex::Autolock lock(mStatusMutex); |
| |
| ICameraServiceListener::Status oldStatus = mStatusList[cameraId]; |
| |
| mStatusList[cameraId] = status; |
| |
| if (oldStatus != status) { |
| ALOGV("%s: Status has changed for camera ID %d from 0x%x to 0x%x", |
| __FUNCTION__, cameraId, (uint32_t)oldStatus, (uint32_t)status); |
| |
| if (oldStatus == ICameraServiceListener::STATUS_NOT_PRESENT && |
| (status != ICameraServiceListener::STATUS_PRESENT && |
| status != ICameraServiceListener::STATUS_ENUMERATING)) { |
| |
| ALOGW("%s: From NOT_PRESENT can only transition into PRESENT" |
| " or ENUMERATING", __FUNCTION__); |
| mStatusList[cameraId] = oldStatus; |
| return; |
| } |
| |
| if (rejectSourceStates != NULL) { |
| const StatusVector &rejectList = *rejectSourceStates; |
| StatusVector::const_iterator it = rejectList.begin(); |
| |
| /** |
| * Sometimes we want to conditionally do a transition. |
| * For example if a client disconnects, we want to go to PRESENT |
| * only if we weren't already in NOT_PRESENT or ENUMERATING. |
| */ |
| for (; it != rejectList.end(); ++it) { |
| if (oldStatus == *it) { |
| ALOGV("%s: Rejecting status transition for Camera ID %d, " |
| " since the source state was was in one of the bad " |
| " states.", __FUNCTION__, cameraId); |
| mStatusList[cameraId] = oldStatus; |
| return; |
| } |
| } |
| } |
| |
| /** |
| * ProClients lose their exclusive lock. |
| * - Done before the CameraClient can initialize the HAL device, |
| * since we want to be able to close it before they get to initialize |
| */ |
| if (status == ICameraServiceListener::STATUS_NOT_AVAILABLE) { |
| Vector<wp<ProClient> > proClients(mProClientList[cameraId]); |
| Vector<wp<ProClient> >::const_iterator it; |
| |
| for (it = proClients.begin(); it != proClients.end(); ++it) { |
| sp<ProClient> proCl = it->promote(); |
| if (proCl.get() != NULL) { |
| proCl->onExclusiveLockStolen(); |
| } |
| } |
| } |
| |
| Vector<sp<ICameraServiceListener> >::const_iterator it; |
| for (it = mListenerList.begin(); it != mListenerList.end(); ++it) { |
| (*it)->onStatusChanged(status, cameraId); |
| } |
| } |
| } |
| |
| ICameraServiceListener::Status CameraService::getStatus(int cameraId) const { |
| if (cameraId < 0 || cameraId >= MAX_CAMERAS) { |
| ALOGE("%s: Invalid camera ID %d", __FUNCTION__, cameraId); |
| return ICameraServiceListener::STATUS_UNKNOWN; |
| } |
| |
| Mutex::Autolock al(mStatusMutex); |
| return mStatusList[cameraId]; |
| } |
| |
| }; // namespace android |
