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      1 /*
      2  * Copyright (C) 2016 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 package android.car.hardware.camera;
     18 
     19 import android.annotation.SystemApi;
     20 import android.car.Car;
     21 import android.car.CarManagerBase;
     22 import android.car.CarNotConnectedException;
     23 import android.content.Context;
     24 import android.os.IBinder;
     25 import android.os.RemoteException;
     26 import android.util.Log;
     27 
     28 /**
     29  * API for controlling camera system in cars
     30  * @hide
     31  */
     32 @SystemApi
     33 public class CarCameraManager implements CarManagerBase {
     34     public final static boolean DBG = true;
     35     public final static String TAG = CarCameraManager.class.getSimpleName();
     36 
     37     // Camera capabilities flags
     38     public static final int ANDROID_OVERLAY_SUPPORT_FLAG    = 0x1;
     39     public static final int CAMERA_CROP_SUPPORT_FLAG        = 0x2;
     40     public static final int CAMERA_POSITIONING_SUPPORT_FLAG = 0x4;
     41 
     42     // Camera types
     43     public static final int CAR_CAMERA_TYPE_NONE            = 0;
     44     public static final int CAR_CAMERA_TYPE_RVC             = 1;
     45 
     46     private int[] mCameraList;
     47     private final ICarCamera mService;
     48 
     49     /**
     50      * Get an instance of the CarCameraManager.
     51      *
     52      * Should not be obtained directly by clients, use {@link Car.getCarManager()} instead.
     53      * @hide
     54      */
     55     public CarCameraManager(IBinder service, Context context) throws CarNotConnectedException{
     56         mService = ICarCamera.Stub.asInterface(service);
     57         try {
     58             mCameraList = mService.getCameraList();
     59         } catch (RemoteException e) {
     60             Log.e(TAG, "Exception in getCameraList", e);
     61             mCameraList = null;
     62             throw new CarNotConnectedException(e);
     63         }
     64     }
     65 
     66     /**
     67      *
     68      * @return Array of CAR_CAMERA_TYPE_* telling which cameras are present
     69      */
     70     public int[] getCameraList() {
     71         return mCameraList;
     72     }
     73 
     74     /**
     75      *
     76      * @param cameraType Camera type to query capabilites
     77      * @return Bitmask of camera capabilities available for this device
     78      * @throws CarNotConnectedException
     79      */
     80     public int getCameraCapabilities(int cameraType) throws CarNotConnectedException {
     81         int capabilities;
     82         try {
     83             capabilities = mService.getCapabilities(cameraType);
     84         } catch (RemoteException e) {
     85             Log.e(TAG, "Exception in getCameraCapabilities", e);
     86             throw new CarNotConnectedException(e);
     87         }
     88         return capabilities;
     89     }
     90 
     91     public CarCamera openCamera(int cameraType) {
     92         CarCamera camera = null;
     93 
     94         // Find cameraType in the list of available cameras
     95         for (int i : mCameraList) {
     96             if(i == cameraType) {
     97                 camera = new CarCamera(mService, cameraType);
     98                 break;
     99             }
    100         }
    101         return camera;
    102     }
    103 
    104     public void closeCamera(CarCamera camera) {
    105         // TODO:  What should we do?
    106     }
    107 
    108     /** @hide */
    109     @Override
    110     public void onCarDisconnected() {
    111     }
    112 }
    113