Source to 321/linux/vid_so.c

/*
Copyright (C) 1997-2001 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// Main windowed and fullscreen graphics interface module. This module
// is used for both the software and OpenGL rendering versions of the
// Quake refresh engine.

#include <assert.h>
#include <dlfcn.h> // ELF dl loader
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>

#include "../client/client.h"

#include "../linux/rw_linux.h"

// Structure containing functions exported from refresh DLL
refexport_t	re;

// Console variables that we need to access from this module
cvar_t		*vid_gamma;
cvar_t		*vid_ref;			// Name of Refresh DLL loaded
cvar_t		*vid_xpos;			// X coordinate of window position
cvar_t		*vid_ypos;			// Y coordinate of window position
cvar_t		*vid_fullscreen;

// Global variables used internally by this module
viddef_t	viddef;				// global video state; used by other modules
void		*reflib_library;		// Handle to refresh DLL 
qboolean	reflib_active = 0;

#define VID_NUM_MODES ( sizeof( vid_modes ) / sizeof( vid_modes[0] ) )

const char so_file[] = "/etc/quake2.conf";

/** KEYBOARD **************************************************************/

void Do_Key_Event(int key, qboolean down);

void (*KBD_Update_fp)(void);
void (*KBD_Init_fp)(Key_Event_fp_t fp);
void (*KBD_Close_fp)(void);

/** MOUSE *****************************************************************/

in_state_t in_state;

void (*RW_IN_Init_fp)(in_state_t *in_state_p);
void (*RW_IN_Shutdown_fp)(void);
void (*RW_IN_Activate_fp)(qboolean active);
void (*RW_IN_Commands_fp)(void);
void (*RW_IN_Move_fp)(usercmd_t *cmd);
void (*RW_IN_Frame_fp)(void);

void Real_IN_Init (void);

/*
==========================================================================

DLL GLUE

==========================================================================
*/

#define	MAXPRINTMSG	4096
void VID_Printf (int print_level, char *fmt, ...)
{
	va_list		argptr;
	char		msg[MAXPRINTMSG];
	static qboolean	inupdate;
	
	va_start (argptr,fmt);
	vsprintf (msg,fmt,argptr);
	va_end (argptr);

	if (print_level == PRINT_ALL)
		Com_Printf ("%s", msg);
	else
		Com_DPrintf ("%s", msg);
}

void VID_Error (int err_level, char *fmt, ...)
{
	va_list		argptr;
	char		msg[MAXPRINTMSG];
	static qboolean	inupdate;
	
	va_start (argptr,fmt);
	vsprintf (msg,fmt,argptr);
	va_end (argptr);

	Com_Error (err_level,"%s", msg);
}

//==========================================================================

/*
============
VID_Restart_f

Console command to re-start the video mode and refresh DLL. We do this
simply by setting the modified flag for the vid_ref variable, which will
cause the entire video mode and refresh DLL to be reset on the next frame.
============
*/
void VID_Restart_f (void)
{
	vid_ref->modified = true;
}

/*
** VID_GetModeInfo
*/
typedef struct vidmode_s
{
	const char *description;
	int         width, height;
	int         mode;
} vidmode_t;

vidmode_t vid_modes[] =
{
	{ "Mode 0: 320x240",   320, 240,   0 },
	{ "Mode 1: 400x300",   400, 300,   1 },
	{ "Mode 2: 512x384",   512, 384,   2 },
	{ "Mode 3: 640x480",   640, 480,   3 },
	{ "Mode 4: 800x600",   800, 600,   4 },
	{ "Mode 5: 960x720",   960, 720,   5 },
	{ "Mode 6: 1024x768",  1024, 768,  6 },
	{ "Mode 7: 1152x864",  1152, 864,  7 },
	{ "Mode 8: 1280x1024",  1280, 1024, 8 },
	{ "Mode 9: 1600x1200", 1600, 1200, 9 },
	{ "Mode 10: 2048x1536", 2048, 1536, 10 }
};

qboolean VID_GetModeInfo( int *width, int *height, int mode )
{
	if ( mode < 0 || mode >= VID_NUM_MODES )
		return false;

	*width  = vid_modes[mode].width;
	*height = vid_modes[mode].height;

	return true;
}

/*
** VID_NewWindow
*/
void VID_NewWindow ( int width, int height)
{
	viddef.width  = width;
	viddef.height = height;
}

void VID_FreeReflib (void)
{
	if (reflib_library) {
		if (KBD_Close_fp)
			KBD_Close_fp();
		if (RW_IN_Shutdown_fp)
			RW_IN_Shutdown_fp();
		dlclose(reflib_library);
	}

	KBD_Init_fp = NULL;
	KBD_Update_fp = NULL;
	KBD_Close_fp = NULL;
	RW_IN_Init_fp = NULL;
	RW_IN_Shutdown_fp = NULL;
	RW_IN_Activate_fp = NULL;
	RW_IN_Commands_fp = NULL;
	RW_IN_Move_fp = NULL;
	RW_IN_Frame_fp = NULL;

	memset (&re, 0, sizeof(re));
	reflib_library = NULL;
	reflib_active  = false;
}

/*
==============
VID_LoadRefresh
==============
*/