SDL_xbios.h
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 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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/* Hidden "this" pointer for the video functions */
#define _THIS SDL_VideoDevice *this
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#define XBIOSMODE_DOUBLELINE (1<<0)
#define XBIOSMODE_C2P (1<<1)
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typedef struct
{
Uint16 number; /* Video mode number */
Uint16 width; /* Size */
Uint16 height;
Uint16 depth; /* bits per plane */
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} xbiosmode_t;
/* Private display data */
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#define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */
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struct SDL_PrivateVideoData {
long cookie_vdo;
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long old_video_mode; /* Old video mode before entering SDL */
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void *old_video_base; /* Old pointer to screen buffer */
void *old_palette; /* Old palette */
Uint32 old_num_colors; /* Nb of colors in saved palette */
void *screens[2]; /* Pointers to aligned screen buffer */
void *screensmem[2]; /* Pointers to screen buffer */
void *shadowscreen; /* Shadow screen for c2p conversion */
int frame_number; /* Number of frame for double buffer */
int pitch; /* Destination line width for C2P */
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SDL_bool centscreen; /* Centscreen extension present ? */
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xbiosmode_t *current; /* Current set mode */
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int SDL_nummodes[NUM_MODELISTS];
SDL_Rect **SDL_modelist[NUM_MODELISTS];
xbiosmode_t **SDL_xbiosmode[NUM_MODELISTS];
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};
/* _VDO cookie values */
enum {
VDO_ST=0,
VDO_STE,
VDO_TT,
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VDO_F30,
VDO_MILAN
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};
/* Monitor types */
enum {
MONITOR_MONO=0,
MONITOR_TV,
MONITOR_VGA,
MONITOR_RGB
};
/* EgetShift masks */
#define ES_MODE 0x0700
/* TT shifter modes */
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#ifndef ST_LOW
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#define ST_LOW 0x0000
#define ST_MED 0x0100
#define ST_HIGH 0x0200
#define TT_LOW 0x0700
#define TT_MED 0x0300
#define TT_HIGH 0x0600
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/* Hidden structure -> variables names */
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#define SDL_nummodes (this->hidden->SDL_nummodes)
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#define SDL_modelist (this->hidden->SDL_modelist)
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#define SDL_xbiosmode (this->hidden->SDL_xbiosmode)
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#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_screens (this->hidden->screens)
#define XBIOS_screensmem (this->hidden->screensmem)
#define XBIOS_shadowscreen (this->hidden->shadowscreen)
#define XBIOS_fbnum (this->hidden->frame_number)
#define XBIOS_pitch (this->hidden->pitch)
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#define XBIOS_centscreen (this->hidden->centscreen)
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#define XBIOS_current (this->hidden->current)
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/*--- Functions prototypes ---*/
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void SDL_XBIOS_AddMode(_THIS, int actually_add, const xbiosmode_t *modeinfo);
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#endif /* _SDL_xbios_h */