1 // Copyright (C) 2022 The Android Open Source Project 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #pragma once 16 17 #include <stdint.h> 18 19 namespace gfxstream { 20 21 class DisplaySurface; 22 class DisplaySurfaceUser; 23 24 class DisplaySurfaceUser { 25 public: 26 virtual ~DisplaySurfaceUser(); 27 28 public: 29 void bindToSurface(DisplaySurface* surface); 30 31 void unbindFromSurface(); 32 33 protected: 34 virtual void bindToSurfaceImpl(DisplaySurface* surface) = 0; 35 36 virtual void surfaceUpdated(DisplaySurface* surface) = 0; 37 38 virtual void unbindFromSurfaceImpl() = 0; 39 getBoundSurface()40 const DisplaySurface* getBoundSurface() const { return mBoundSurface; } 41 42 private: 43 friend class DisplaySurface; 44 DisplaySurface* mBoundSurface = nullptr; 45 }; 46 47 } // namespace gfxstream 48