/*
    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);
}

/* vi: set ts=4 sw=4 expandtab: */