/*

SDL - Simple DirectMedia Layer

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

*/

#ifdef SAVE_RCSID

static char rcsid =

"@(#) $Id$";

#endif

#ifndef _SDL_xbios_h

#define _SDL_xbios_h

#include "SDL_types.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)

/*--- Functions prototypes ---*/

void SDL_XBIOS_AddMode(_THIS, Uint16 modecode, Uint16 width, Uint16 height,

Uint16 depth, SDL_bool flags);