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