Add #6173: New SDL 2 based video and sound drivers (#7086)

src/video/sdl2_v.h

@@ -0,0 +1,53 @@
+/* $Id$ */
+
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD 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, version 2.
+ * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file sdl2_v.h Base of the SDL2 video driver. */
+
+#ifndef VIDEO_SDL_H
+#define VIDEO_SDL_H
+
+#include "video_driver.hpp"
+
+/** The SDL video driver. */
+class VideoDriver_SDL : public VideoDriver {
+public:
+	const char *Start(const char * const *param) override;
+
+	void Stop() override;
+
+	void MakeDirty(int left, int top, int width, int height) override;
+
+	void MainLoop() override;
+
+	bool ChangeResolution(int w, int h) override;
+
+	bool ToggleFullscreen(bool fullscreen) override;
+
+	bool AfterBlitterChange() override;
+
+	void AcquireBlitterLock() override;
+
+	void ReleaseBlitterLock() override;
+
+	bool ClaimMousePointer() override;
+
+	const char *GetName() const override { return "sdl"; }
+private:
+	int PollEvent();
+	bool CreateMainSurface(uint w, uint h, bool resize);
+};
+
+/** Factory for the SDL video driver. */
+class FVideoDriver_SDL : public DriverFactoryBase {
+public:
+	FVideoDriver_SDL() : DriverFactoryBase(Driver::DT_VIDEO, 5, "sdl", "SDL Video Driver") {}
+	Driver *CreateInstance() const override { return new VideoDriver_SDL(); }
+};
+
+#endif /* VIDEO_SDL_H */