////  Created by Bradley Austin Davis on 2015/10/25//  Copyright 2015 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include <mutex> #include <QtCore/QObject>#include <QtCore/QtPlugin>#include <QtCore/QStringList> #include <plugins/RuntimePlugin.h>#include <plugins/InputPlugin.h> #include "SDL2Manager.h" class SDL2Provider : public QObject, public InputProvider {    Q_OBJECT    Q_PLUGIN_METADATA(IID InputProvider_iid FILE "plugin.json")    Q_INTERFACES(InputProvider) public:    SDL2Provider(QObject* parent = nullptr) : QObject(parent) {}    virtual ~SDL2Provider() {}     virtual InputPluginList getInputPlugins() override {        static std::once_flag once;        std::call_once(once, [&] {            InputPluginPointer plugin(std::make_shared<SDL2Manager>());            if (plugin->isSupported()) {                _inputPlugins.push_back(plugin);            }        });        return _inputPlugins;    }     virtual void destroyInputPlugins() override {        _inputPlugins.clear();    } private:    InputPluginList _inputPlugins;}; #include "SDL2Provider.moc"