/*    Copyright 2019 Wolfgang Thaller.     This file is part of Retro68.     Retro68 is free software: you can redistribute it and/or modify    it under the terms of the GNU General Public License as published by    the Free Software Foundation, either version 3 of the License, or    (at your option) any later version.     Retro68 is distributed in the hope that it will be useful,    but WITHOUT ANY WARRANTY; without even the implied warranty of    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    GNU General Public License for more details.     You should have received a copy of the GNU General Public License    along with Retro68.  If not, see <http://www.gnu.org/licenses/>.*/ #pragma once class StreamListener;class Stream; class ConnectionProvider{protected:    StreamListener *listener;public:    void setListener(StreamListener *l) { listener = l; }     virtual ~ConnectionProvider() {}    virtual Stream* getStream() = 0;    virtual void idle() {}    virtual void suspend() {}    virtual void resume() {}     virtual void* segmentToUnload() { return nullptr; }};