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 #ifndef CAR_EVS_APP_EVSSTATECONTROL_H
18 #define CAR_EVS_APP_EVSSTATECONTROL_H
19 
20 #include <android/hardware/automotive/vehicle/2.0/IVehicle.h>
21 #include <android/hardware/automotive/evs/1.0/IEvsEnumerator.h>
22 #include <android/hardware/automotive/evs/1.0/IEvsDisplay.h>
23 #include <android/hardware/automotive/evs/1.0/IEvsCamera.h>
24 
25 #include "StreamHandler.h"
26 #include "ConfigManager.h"
27 
28 
29 using namespace ::android::hardware::automotive::evs::V1_0;
30 using namespace ::android::hardware::automotive::vehicle::V2_0;
31 using ::android::hardware::Return;
32 using ::android::hardware::Void;
33 using ::android::hardware::hidl_vec;
34 using ::android::hardware::hidl_handle;
35 using ::android::sp;
36 
37 
38 class EvsStateControl {
39 public:
40     EvsStateControl(android::sp <IVehicle>       pVnet,
41                     android::sp <IEvsEnumerator> pEvs,
42                     android::sp <IEvsDisplay>    pDisplay,
43                     const ConfigManager&         config);
44 
45     enum State {
46         REVERSE = 0,
47         LEFT,
48         RIGHT,
49         OFF,
50         NUM_STATES  // Must come last
51     };
52 
53     bool configureForVehicleState();
54 
55 private:
56     StatusCode invokeGet(VehiclePropValue *pRequestedPropValue);
57     bool configureEvsPipeline(State desiredState);
58 
59     sp<IVehicle>                mVehicle;
60     sp<IEvsEnumerator>          mEvs;
61     sp<IEvsDisplay>             mDisplay;
62 
63     VehiclePropValue            mGearValue;
64     VehiclePropValue            mTurnSignalValue;
65 
66     ConfigManager::CameraInfo   mCameraInfo[State::NUM_STATES];
67     State                       mCurrentState;
68     sp<IEvsCamera>              mCurrentCamera;
69 
70     sp<StreamHandler>           mCurrentStreamHandler;
71 };
72 
73 
74 #endif //CAR_EVS_APP_EVSSTATECONTROL_H
75