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/BnWindowInfosReportedListener.h> 20 #include <android/gui/IWindowInfosListener.h> 21 #include <android/gui/IWindowInfosReportedListener.h> 22 #include <binder/IBinder.h> 23 #include <ftl/small_map.h> 24 #include <utils/Mutex.h> 25 26 namespace android { 27 28 class SurfaceFlinger; 29 30 class WindowInfosListenerInvoker : public IBinder::DeathRecipient { 31 public: 32 explicit WindowInfosListenerInvoker(SurfaceFlinger&); 33 34 void addWindowInfosListener(sp<gui::IWindowInfosListener>); 35 void removeWindowInfosListener(const sp<gui::IWindowInfosListener>& windowInfosListener); 36 37 void windowInfosChanged(const std::vector<gui::WindowInfo>&, 38 const std::vector<gui::DisplayInfo>&, bool shouldSync); 39 40 protected: 41 void binderDied(const wp<IBinder>& who) override; 42 43 private: 44 struct WindowInfosReportedListener; 45 void windowInfosReported(); 46 47 SurfaceFlinger& mFlinger; 48 std::mutex mListenersMutex; 49 50 static constexpr size_t kStaticCapacity = 3; 51 ftl::SmallMap<wp<IBinder>, const sp<gui::IWindowInfosListener>, kStaticCapacity> 52 mWindowInfosListeners GUARDED_BY(mListenersMutex); 53 54 sp<gui::IWindowInfosReportedListener> mWindowInfosReportedListener; 55 std::atomic<size_t> mCallbacksPending{0}; 56 }; 57 58 } // namespace android 59