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 
17 #ifndef ANDROID_AUTOMOTIVE_EVS_V1_1_DISPLAYPROXY_H
18 #define ANDROID_AUTOMOTIVE_EVS_V1_1_DISPLAYPROXY_H
19 
20 #include <limits>
21 
22 #include <android/hardware/automotive/evs/1.1/types.h>
23 #include <android/hardware/automotive/evs/1.1/IEvsDisplay.h>
24 
25 using namespace ::android::hardware::automotive::evs::V1_1;
26 using ::android::hardware::Return;
27 using ::android::hardware::Void;
28 using ::android::hardware::hidl_handle;
29 using ::android::hardware::automotive::evs::V1_0::EvsResult;
30 using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
31 using EvsDisplayState = ::android::hardware::automotive::evs::V1_0::DisplayState;
32 using IEvsDisplay_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
33 using IEvsDisplay_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsDisplay;
34 
35 namespace android {
36 namespace automotive {
37 namespace evs {
38 namespace V1_1 {
39 namespace implementation {
40 
41 // TODO(129284474): This class has been defined to wrap the IEvsDisplay object the driver
42 // returns because of b/129284474 and represents an EVS display to the client
43 // application.  With a proper bug fix, we may remove this class and update the
44 // manager directly to use the IEvsDisplay object the driver provides.
45 class HalDisplay : public IEvsDisplay_1_1 {
46 public:
47     explicit HalDisplay(sp<IEvsDisplay_1_0> display,
48                         int32_t port = std::numeric_limits<int32_t>::min());
49     virtual ~HalDisplay() override;
50 
51     inline void         shutdown();
52     sp<IEvsDisplay_1_0> getHwDisplay();
53 
54     // Methods from ::android::hardware::automotive::evs::V1_0::IEvsDisplay follow.
55     Return<void>            getDisplayInfo(getDisplayInfo_cb _hidl_cb)  override;
56     Return<EvsResult>       setDisplayState(EvsDisplayState state)  override;
57     Return<EvsDisplayState> getDisplayState()  override;
58     Return<void>            getTargetBuffer(getTargetBuffer_cb _hidl_cb)  override;
59     Return<EvsResult>       returnTargetBufferForDisplay(const BufferDesc_1_0& buffer)  override;
60 
61     // Methods from ::android::hardware::automotive::evs::V1_1::IEvsDisplay follow.
62     Return<void>            getDisplayInfo_1_1(getDisplayInfo_1_1_cb _info_cb) override;
63 
64     // Returns a string showing the current status
65     std::string toString(const char* indent = "");
66 
67 private:
68     sp<IEvsDisplay_1_0>     mHwDisplay; // The low level display interface that backs this proxy
69     int32_t                 mId; // Display identifier
70 };
71 
72 } // namespace implementation
73 } // namespace V1_1
74 } // namespace evs
75 } // namespace automotive
76 } // namespace android
77 
78 #endif  // ANDROID_AUTOMOTIVE_EVS_V1_1_DISPLAYPROXY_H
79