1 /*
2  * Copyright (C) 2022 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 CPP_DISPLAYPROXY_INCLUDE_CARDISPLAYPROXYSERVICE_H_
18 #define CPP_DISPLAYPROXY_INCLUDE_CARDISPLAYPROXYSERVICE_H_
19 
20 #include <aidl/android/frameworks/automotive/display/BnCarDisplayProxy.h>
21 #include <gui/Surface.h>
22 #include <gui/SurfaceControl.h>
23 #include <ui/DisplayMode.h>
24 #include <ui/DisplayState.h>
25 
26 namespace aidl::android::frameworks::automotive::display::implementation {
27 
28 struct DisplayRecord {
29     ::android::sp<::android::IBinder> token;
30     ::android::sp<::android::SurfaceControl> surfaceControl;
31 };
32 
33 class CarDisplayProxy : public ::aidl::android::frameworks::automotive::display::BnCarDisplayProxy {
34 public:
~CarDisplayProxy()35     ~CarDisplayProxy() { mSurfaceList.clear(); }
36 
37     // Methods from ::aidl::android::frameworks::automotive::display::ICarDisplayProxy
38     ::ndk::ScopedAStatus getDisplayIdList(std::vector<int64_t>* _aidl_return) override;
39     ::ndk::ScopedAStatus getDisplayInfo(
40             int64_t id,
41             ::aidl::android::frameworks::automotive::display::DisplayDesc* _aidl_return) override;
42     ::ndk::ScopedAStatus getHGraphicBufferProducer(
43             int64_t id, ::aidl::android::hardware::common::NativeHandle* _aidl_return) override;
44     ::ndk::ScopedAStatus hideWindow(int64_t id) override;
45     ::ndk::ScopedAStatus showWindow(int64_t id) override;
46     ::ndk::ScopedAStatus getSurface(int64_t id,
47                                     ::aidl::android::view::Surface* _aidl_return) override;
48 
49 private:
getDisplayPort(uint64_t id)50     uint8_t getDisplayPort(uint64_t id) { return (id & 0xF); }
51     ::android::sp<::android::IBinder> getDisplayInfoFromSurfaceComposerClient(
52             int64_t id, ::android::ui::DisplayMode* displayMode,
53             ::android::ui::DisplayState* displayState);
54     ::ndk::ScopedAStatus getDisplayRecord(
55             int64_t id, ::android::sp<::android::IBinder>* outDisplayToken,
56             ::android::sp<::android::SurfaceControl>* outSurfaceControl);
57 
58     // Bookkeeping display records and Surface objects. Because this service is
59     // single-threaded, these variables are not needed to be protected
60     // explicitly.
61     std::unordered_map<uint64_t, DisplayRecord> mDisplays;
62     std::unordered_map<uint64_t, ::android::sp<::android::Surface>> mSurfaceList;
63 };
64 
65 }  // namespace aidl::android::frameworks::automotive::display::implementation
66 
67 #endif  // CPP_DISPLAYPROXY_INCLUDE_CARDISPLAYPROXYSERVICE_H_
68