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SDL_xbios.h
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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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
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Lesser General Public License for more details.
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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
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Sam Lantinga
slouken@libsdl.org
*/
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#include "SDL_config.h"
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#ifndef _SDL_xbios_h
#define _SDL_xbios_h
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#include "SDL_stdinc.h"
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#include "../SDL_sysvideo.h"
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/* 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
{
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Uint16 number; /* Video mode number */
Uint16 width; /* Size */
Uint16 height;
Uint16 depth; /* bits per plane */
SDL_bool doubleline; /* Double the lines ? */
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} xbiosmode_t;
/* Private display data */
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#define NUM_MODELISTS 2 /* 8 and 16 bits-per-pixel */
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typedef struct SDL_VideoData
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{
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];
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} SDL_VideoData;
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/* _VDO cookie values */
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enum
{
VDO_ST = 0,
VDO_STE,
VDO_TT,
VDO_F30
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};
/* Monitor types */
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enum
{
MONITOR_MONO = 0,
MONITOR_TV,
MONITOR_VGA,
MONITOR_RGB
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};
/* 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 */
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#define SDL_modelist (_this->driverdata->SDL_modelist)
#define XBIOS_mutex (_this->driverdata->mutex)
#define XBIOS_cvdo (_this->driverdata->cookie_vdo)
#define XBIOS_oldpalette (_this->driverdata->old_palette)
#define XBIOS_oldnumcol (_this->driverdata->old_num_colors)
#define XBIOS_oldvbase (_this->driverdata->old_video_base)
#define XBIOS_oldvmode (_this->driverdata->old_video_mode)
#define XBIOS_nummodes (_this->driverdata->num_modes)
#define XBIOS_modelist (_this->driverdata->mode_list)
#define XBIOS_screens (_this->driverdata->screens)
#define XBIOS_screensmem (_this->driverdata->screensmem)
#define XBIOS_shadowscreen (_this->driverdata->shadowscreen)
#define XBIOS_videomodes (_this->driverdata->videomodes)
#define XBIOS_doubleline (_this->driverdata->doubleline)
#define XBIOS_fbnum (_this->driverdata->frame_number)
#define XBIOS_pitch (_this->driverdata->pitch)
#define XBIOS_width (_this->driverdata->width)
#define XBIOS_height (_this->driverdata->height)
#define XBIOS_centscreen (_this->driverdata->centscreen)
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/*--- Functions prototypes ---*/
void SDL_XBIOS_AddMode(_THIS, Uint16 modecode, Uint16 width, Uint16 height,
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Uint16 depth, SDL_bool flags);
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#endif /* _SDL_xbios_h */
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/* vi: set ts=4 sw=4 expandtab: */