/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2004 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Library General Public

    License as published by the Free Software Foundation; either

    version 2 of the License, or (at your option) any later version.

    This library 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

    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public

    License along with this library; if not, write to the Free

    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga

    slouken@libsdl.org

*/

#include "SDL_config.h"

/*

	Centscreen extension definitions

	Patrice Mandin

*/

#include <mint/falcon.h>

#include "SDL_xbios.h"

#include "SDL_xbios_centscreen.h"

int SDL_XBIOS_CentscreenInit(_THIS)

{

	centscreen_mode_t	curmode, listedmode;

	unsigned long result;

	int cur_handle;	/* Current Centscreen mode handle */

	/* Reset current mode list */

	if (XBIOS_modelist) {

		SDL_free(XBIOS_modelist);

		XBIOS_nummodes = 0;

		XBIOS_modelist = NULL;

	}

	/* Add Centscreen modes */

	Vread(&curmode);

	cur_handle = curmode.handle;

	curmode.mode = curmode.physx = curmode.physy = curmode.plan =

		curmode.logx = curmode.logy = -1;

	result = Vfirst(&curmode, &listedmode);

	if (result==0) {

		while (result==0) {

			/* Don't add modes with virtual screen */

			if ((listedmode.mode & CSCREEN_VIRTUAL)==0) {

				/* Don't add modes with bpp<8 */

				if (listedmode.plan>=8) {

					SDL_XBIOS_AddMode(this, listedmode.mode, listedmode.physx,

						listedmode.physy, listedmode.plan, SDL_FALSE

					);

				}

			}

			SDL_memcpy(&curmode, &listedmode, sizeof(centscreen_mode_t));

			curmode.mode = curmode.physx = curmode.physy = curmode.plan =

				curmode.logx = curmode.logy = -1;

			result = Vnext(&curmode, &listedmode);

		}		

	} else {

		fprintf(stderr, "No suitable Centscreen modes\n");

	}

	return cur_handle;

}

void SDL_XBIOS_CentscreenSetmode(_THIS, int width, int height, int planes)

{

	centscreen_mode_t	newmode, curmode;

	newmode.handle = newmode.mode = newmode.logx = newmode.logy = -1;

	newmode.physx = width;

	newmode.physy = height;

	newmode.plan = planes;

	Vwrite(0, &newmode, &curmode);

	/* Disable screensaver */

	Vread(&newmode);

	newmode.mode &= ~(CSCREEN_SAVER|CSCREEN_ENERGYSTAR);

	Vwrite(0, &newmode, &curmode);

}

void SDL_XBIOS_CentscreenRestore(_THIS, int prev_handle)

{

	centscreen_mode_t	newmode, curmode;

	/* Restore old video mode */

	newmode.handle = prev_handle;

	newmode.mode = newmode.physx = newmode.physy = newmode.plan =

		newmode.logx = newmode.logy = -1;

	Vwrite(0, &newmode, &curmode);

}