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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_HARDWARE_ICAMERASERVICE_H
     18 #define ANDROID_HARDWARE_ICAMERASERVICE_H
     19 
     20 #include <utils/RefBase.h>
     21 #include <binder/IInterface.h>
     22 #include <binder/Parcel.h>
     23 
     24 namespace android {
     25 
     26 class ICamera;
     27 class ICameraClient;
     28 class IProCameraUser;
     29 class IProCameraCallbacks;
     30 class ICameraServiceListener;
     31 
     32 class ICameraService : public IInterface
     33 {
     34 public:
     35     enum {
     36         GET_NUMBER_OF_CAMERAS = IBinder::FIRST_CALL_TRANSACTION,
     37         GET_CAMERA_INFO,
     38         CONNECT,
     39         CONNECT_PRO,
     40         ADD_LISTENER,
     41         REMOVE_LISTENER,
     42     };
     43 
     44     enum {
     45         USE_CALLING_UID = -1
     46     };
     47 
     48 public:
     49     DECLARE_META_INTERFACE(CameraService);
     50 
     51     virtual int32_t  getNumberOfCameras() = 0;
     52     virtual status_t getCameraInfo(int cameraId,
     53                                           struct CameraInfo* cameraInfo) = 0;
     54 
     55     // Returns 'OK' if operation succeeded
     56     // - Errors: ALREADY_EXISTS if the listener was already added
     57     virtual status_t addListener(const sp<ICameraServiceListener>& listener)
     58                                                                             = 0;
     59     // Returns 'OK' if operation succeeded
     60     // - Errors: BAD_VALUE if specified listener was not in the listener list
     61     virtual status_t removeListener(const sp<ICameraServiceListener>& listener)
     62                                                                             = 0;
     63     /**
     64      * clientPackageName and clientUid are used for permissions checking.  if
     65      * clientUid == USE_CALLING_UID, then the calling UID is used instead. Only
     66      * trusted callers can set a clientUid other than USE_CALLING_UID.
     67      */
     68     virtual sp<ICamera> connect(const sp<ICameraClient>& cameraClient,
     69             int cameraId,
     70             const String16& clientPackageName,
     71             int clientUid) = 0;
     72 
     73     virtual sp<IProCameraUser> connect(const sp<IProCameraCallbacks>& cameraCb,
     74             int cameraId,
     75             const String16& clientPackageName,
     76             int clientUid) = 0;
     77 };
     78 
     79 // ----------------------------------------------------------------------------
     80 
     81 class BnCameraService: public BnInterface<ICameraService>
     82 {
     83 public:
     84     virtual status_t    onTransact( uint32_t code,
     85                                     const Parcel& data,
     86                                     Parcel* reply,
     87                                     uint32_t flags = 0);
     88 };
     89 
     90 }; // namespace android
     91 
     92 #endif
     93