SDL_xbios_centscreen.c
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/*
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
*/
/*
Centscreen extension definitions
Patrice Mandin
*/
#include <stdlib.h>
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#include <string.h>
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#include <mint/falcon.h>
#include "SDL_xbios.h"
#include "SDL_xbios_centscreen.h"
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int SDL_XBIOS_CentscreenInit(_THIS)
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centscreen_mode_t curmode, listedmode;
unsigned long result;
int cur_handle; /* Current Centscreen mode handle */
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/* Reset current mode list */
if (XBIOS_modelist) {
free(XBIOS_modelist);
XBIOS_nummodes = 0;
XBIOS_modelist = NULL;
}
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/* Add Centscreen modes */
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Vread(&curmode);
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cur_handle = curmode.handle;
curmode.mode = curmode.physx = curmode.physy = curmode.plan =
curmode.logx = curmode.logy = -1;
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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
);
}
}
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);
}
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);