1 /*
2  * Copyright 2021 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 #pragma once
18 
19 #include <android/gui/BnWindowInfosListener.h>
20 #include <android/gui/IWindowInfosReportedListener.h>
21 #include <binder/IBinder.h>
22 #include <gui/ISurfaceComposer.h>
23 #include <gui/WindowInfosListener.h>
24 #include <utils/Mutex.h>
25 #include <unordered_set>
26 
27 namespace android {
28 class ISurfaceComposer;
29 
30 class WindowInfosListenerReporter : public gui::BnWindowInfosListener {
31 public:
32     static sp<WindowInfosListenerReporter> getInstance();
33     binder::Status onWindowInfosChanged(const std::vector<gui::WindowInfo>& windowInfos,
34                                         const sp<gui::IWindowInfosReportedListener>&) override;
35 
36     status_t addWindowInfosListener(const sp<gui::WindowInfosListener>& windowInfosListener,
37                                     const sp<ISurfaceComposer>&);
38     status_t removeWindowInfosListener(const sp<gui::WindowInfosListener>& windowInfosListener,
39                                        const sp<ISurfaceComposer>&);
40     void reconnect(const sp<ISurfaceComposer>&);
41 
42 private:
43     std::mutex mListenersMutex;
44     std::unordered_set<sp<gui::WindowInfosListener>,
45                        ISurfaceComposer::SpHash<gui::WindowInfosListener>>
46             mWindowInfosListeners GUARDED_BY(mListenersMutex);
47 };
48 } // namespace android