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SDL_xbios_milan.c
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SDL_xbios_milan.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2009 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"
/*
Milan Xbios video functions
Patrice Mandin
*/
#include <mint/cookie.h>
#include <mint/falcon.h>
#include "SDL_xbios.h"
#include "SDL_xbios_milan.h"
#ifndef Validmode
#define Validmode(mode) \
(short)trap_14_ww((short)0x5f,(short)(mode))
#endif
#define NUM_PREDEFINED_MODES 7
typedef struct {
Uint16 width, height;
} predefined_mode_t;
static const predefined_mode_t mode_list[NUM_PREDEFINED_MODES]={
{640,400},
{640,480},
{800,608},
{1024,768},
{1152,864},
{1280,1024},
{1600,1200}
};
static const Uint8 mode_bpp[4]={
8, 15, 16, 32
};
/*--- Variables ---*/
static int enum_actually_add;
static SDL_VideoDevice *enum_this;
/*--- Functions ---*/
static unsigned long /*cdecl*/ enumfunc(SCREENINFO *inf, unsigned long flag)
{
xbiosmode_t modeinfo;
modeinfo.number = inf->devID;
modeinfo.width = inf->scrWidth;
modeinfo.height = inf->scrHeight;
modeinfo.depth = inf->scrPlanes;
modeinfo.flags = 0;
SDL_XBIOS_AddMode(enum_this, enum_actually_add, &modeinfo);
return ENUMMODE_CONT;
}
void SDL_XBIOS_ListMilanModes(_THIS, int actually_add)
{
int i;
/* Read validated predefined modes */
for (i=0; i<NUM_PREDEFINED_MODES; i++) {
int j;
Uint16 deviceid = 0x1000 + (i<<4);
for (j=1; j<4; j++) {
if (Validmode(deviceid + j)) {
xbiosmode_t modeinfo;
modeinfo.number = deviceid + j;
modeinfo.width = mode_list[i].width;
modeinfo.height = mode_list[i].height;
modeinfo.depth = mode_bpp[j-1];
modeinfo.flags = 0;
SDL_XBIOS_AddMode(this, actually_add, &modeinfo);
}
}
}
/* Read custom created modes */
enum_this = this;
enum_actually_add = actually_add;
VsetScreen(-1, &enumfunc, MI_MAGIC, CMD_ENUMMODES);
}