1 /*
2  * Copyright (C) 2019 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 #ifndef CAR_LIB_EVS_SUPPORT_UTILS_H
17 #define CAR_LIB_EVS_SUPPORT_UTILS_H
18 
19 #include <string>
20 #include <vector>
21 
22 namespace android {
23 namespace automotive {
24 namespace evs {
25 namespace support {
26 
27 using std::vector;
28 using std::string;
29 
30 class Utils {
31 public:
32     /**
33      * Gets camera ids for all the available rear view cameras. For
34      * now, we don't support dynamically adding/removing camera. In
35      * other words, the camera list won't be updated after the first
36      * time the camera list is obtained.
37      *
38      * An empty vector is returned if no rear view camera is found.
39      */
40     static vector<string> getRearViewCameraIds();
41 
42     /**
43      * Gets camera id for the default rear view camera. For now, we
44      * always assume that the first element in rear view camera list
45      * is the default one.
46      *
47      * An empty string is returned if no rear view camera is found.
48      */
49     static string getDefaultRearViewCameraId();
50 
51 private:
52     static vector<string> sCameraIds;
53 };
54 
55 }  // namespace support
56 }  // namespace evs
57 }  // namespace automotive
58 }  // namespace android
59 
60 #endif  // CAR_LIB_EVS_SUPPORT_UTILS_H
61