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      1 /*
      2  * Copyright (C) 2014 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 com.android.camera.one;
     18 
     19 import com.android.camera.device.CameraId;
     20 import com.android.camera.one.OneCamera.Facing;
     21 
     22 /**
     23  * The camera manager is responsible for providing details about the
     24  * available camera hardware on the current device.
     25  */
     26 public interface OneCameraManager {
     27 
     28     /**
     29      * Returns true if this hardware platform currently has any cameras at
     30      * all.
     31      */
     32     public boolean hasCamera();
     33 
     34     /**
     35      * Returns whether the device has a camera facing the given direction.
     36      */
     37     public boolean hasCameraFacing(Facing facing);
     38 
     39     /**
     40      * Get a platform specific device key for the first camera in the list
     41      * of all camera devices.
     42      */
     43     public CameraId findFirstCamera();
     44 
     45     /**
     46      * Get a platform specific device key for a camera facing a particular
     47      * direction.
     48      */
     49     public CameraId findFirstCameraFacing(Facing facing);
     50 
     51     /**
     52      * Retrieve the characteristics for the camera facing at the given
     53      * direction. The first camera found in the given direction will be chosen.
     54      *
     55      * @return A #{link com.android.camera.one.OneCameraCharacteristics} object
     56      *         to provide camera characteristics information. Returns null if
     57      *         there is no camera facing the given direction.
     58      */
     59     public OneCameraCharacteristics getOneCameraCharacteristics(CameraId cameraId)
     60           throws OneCameraAccessException;
     61 
     62     public static class Factory {
     63 
     64     }
     65 }