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SDL_xbios.h
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SDL_xbios.h
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#ifndef _SDL_xbios_h
#define _SDL_xbios_h
#include "SDL_stdinc.h"
#include "../SDL_sysvideo.h"
/* Hidden "this" pointer for the video functions */
#define _THIS SDL_VideoDevice *this
/* TT video modes: 2
Falcon RVB: 16 (could be *2 by adding PAL/NTSC modes)
Falcon VGA: 6
ST low: 1
*/
#define SDL_NUMMODES 16
typedef struct
{
Uint16 number; /* Video mode number */
Uint16 width; /* Size */
Uint16 height;
Uint16 depth; /* bits per plane */
SDL_bool doubleline; /* Double the lines ? */
} xbiosmode_t;
/* Private display data */
#define NUM_MODELISTS 2 /* 8 and 16 bits-per-pixel */
struct SDL_PrivateVideoData {
long cookie_vdo;
int old_video_mode; /* Old video mode before entering SDL */
void *old_video_base; /* Old pointer to screen buffer */
void *old_palette; /* Old palette */
Uint32 old_num_colors; /* Nb of colors in saved palette */
int num_modes; /* Number of xbios video modes */
xbiosmode_t *mode_list; /* List of xbios video modes */
void *screens[2]; /* Pointers to aligned screen buffer */
void *screensmem[2]; /* Pointers to screen buffer */
void *shadowscreen; /* Shadow screen for c2p conversion */
int doubleline; /* Double line mode ? */
int frame_number; /* Number of frame for double buffer */
int pitch; /* Destination line width for C2P */
int width, height; /* Screen size for centered C2P */
SDL_bool centscreen; /* Centscreen extension present ? */
SDL_Rect *SDL_modelist[NUM_MODELISTS][SDL_NUMMODES+1];
xbiosmode_t *videomodes[NUM_MODELISTS][SDL_NUMMODES+1];
};
/* _VDO cookie values */
enum {
VDO_ST=0,
VDO_STE,
VDO_TT,
VDO_F30
};
/* Monitor types */
enum {
MONITOR_MONO=0,
MONITOR_TV,
MONITOR_VGA,
MONITOR_RGB
};
/* EgetShift masks */
#define ES_BANK 0x000f
#define ES_MODE 0x0700
#define ES_GRAY 0x1000
#define ES_SMEAR 0x8000
/* TT shifter modes */
#define ST_LOW 0x0000
#define ST_MED 0x0100
#define ST_HIGH 0x0200
#define TT_LOW 0x0700
#define TT_MED 0x0300
#define TT_HIGH 0x0600
/* Hidden structure -> variables names */
#define SDL_modelist (this->hidden->SDL_modelist)
#define XBIOS_mutex (this->hidden->mutex)
#define XBIOS_cvdo (this->hidden->cookie_vdo)
#define XBIOS_oldpalette (this->hidden->old_palette)
#define XBIOS_oldnumcol (this->hidden->old_num_colors)
#define XBIOS_oldvbase (this->hidden->old_video_base)
#define XBIOS_oldvmode (this->hidden->old_video_mode)
#define XBIOS_nummodes (this->hidden->num_modes)
#define XBIOS_modelist (this->hidden->mode_list)
#define XBIOS_screens (this->hidden->screens)
#define XBIOS_screensmem (this->hidden->screensmem)
#define XBIOS_shadowscreen (this->hidden->shadowscreen)
#define XBIOS_videomodes (this->hidden->videomodes)
#define XBIOS_doubleline (this->hidden->doubleline)
#define XBIOS_fbnum (this->hidden->frame_number)
#define XBIOS_pitch (this->hidden->pitch)
#define XBIOS_width (this->hidden->width)
#define XBIOS_height (this->hidden->height)
#define XBIOS_centscreen (this->hidden->centscreen)
/*--- Functions prototypes ---*/
void SDL_XBIOS_AddMode(_THIS, Uint16 modecode, Uint16 width, Uint16 height,
Uint16 depth, SDL_bool flags);
#endif /* _SDL_xbios_h */