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/* SVGATextMode -- An SVGA textmode manipulation/enhancement tool
*
* Copyright (C) 1995-1998 Koen Gadeyne
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/***
*** grabmode/clockprobe
***
*** This program outputs the current text or graphics mode, in an SVGATextMode (or XF86Config-like) compatible line
*** Should work on ANY VGA card, since it only uses standard VGA registers
***
***/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "misc.h"
#include "messages.h"
#include "modedata.h"
#include "mode_msg.h"
#include "string_ops.h"
#include "cfg_data.h"
#ifdef DOS
#define get_VGA_io_perm(x)
#undef Renounce_SUID
#define Renounce_SUID
extern int optind;
#endif
#ifdef win
# include "asm/io.h"
#endif
char *CommandName;
bool debug_messages=FALSE;
int STM_Options=0; /* just to keep the compiler happy */
#define CLOCKPROBE 1
#define GRABMODE 2
void usage(int func)
{
PMESSAGE(("version %s. (c) 1995-1998 Koen Gadeyne.\n Usage: %s [options] \n"\
" Options: -n Don't program VGA hardware\n"\
" -d print debugging information\n"\
" -r `raw' mode: don't do any guesswork on special modes,\n"\
" just print the values as they appear in the VGA registers\n"\
" -v verbose mode (report all special VGA flags for the mode)\n"\
" -x <screen width>\n"\
" -y <screen height>\n"\
" specify screen width and height in pixels when it is known\n"\
" beforehand. This reduces the probe's guesswork (and errors).\n"\
" -h print usage information\n"\
"%s"\
" NOTE: All non-standard VGA features could cause bogus results:\n"\
" * interlaced modes\n"\
" * modes with >= 1024 active lines (like 1280x1024 and up)\n"\
" * HiColor (15/16bpp) and TrueColor (24/32bpp) modes\n"\
" * modes on cards with special DAC's\n"\
" The program will try to detect this and compensate\n"\
" (but will issue a warning that the actual VGA timings were adjusted)\n",\
VERSION, CommandName,\
(func==GRABMODE) ? \
" -X Output compatible with XF86Config mode line\n"\
" (NOTE: grabbed graphic modes are not always correct)\n"\
" -T Output compatible with TextConfig mode line\n"\
" -b Also print blanking information\n"\
" -c Don't probe for pixel clock (just print timing information)\n"\
:\
" -p print ONLY clock value (for use in scripts, pipes, etc)\n" ));
}
/***********************************************************************************************************/
int main (int argc, char* argv[])
{
bool program_hardware=TRUE;
int Xmode=MODE_UNDEFINED;
bool showblank=FALSE;
bool probe_clock=TRUE;
bool pipeable=FALSE;
bool raw_mode=FALSE;
bool verbose=FALSE;
int i;
char* commandfilename;
int c;
modestruct m;
int initial_x=-1, initial_y=-1;
int func;
CommandName = argv[0];
commandfilename = strrchr(CommandName, '/');
if (commandfilename) commandfilename++;
else commandfilename = CommandName;
#ifdef DOS
func = (!strncmp(commandfilename,"grab",4)) ? GRABMODE : CLOCKPROBE;
#else
func = (!strncasecmp(commandfilename,"grab",4)) ? GRABMODE : CLOCKPROBE;
#endif
/*
* command-line argument parsing
*/
#ifdef WIN
verbose=TRUE;
debug_messages=TRUE;
#else
while ((c = getopt (argc, argv, "ndrhXTbcpvx:y:")) != EOF)
switch (c)
{
case 'n': program_hardware=FALSE;
break;
case 'd': debug_messages=TRUE;
break;
case 'r': raw_mode=TRUE;
break;
case 'X': Xmode = MODE_GRAPHICS;
break;
case 'T': Xmode = MODE_TEXT;
break;
case 'b': showblank = TRUE;
break;
case 'c': probe_clock = FALSE;
break;
case 'p': pipeable = TRUE;
break;
case 'v': verbose = TRUE;
break;
case 'h': usage(func);
exit(0);
break;
case 'x': initial_x=getint(optarg, "X-size preset", 0, 4096);
PDEBUG(("X-size on command line = %d\n", initial_x));
break;
case 'y': initial_y=getint(optarg, "Y-size preset", 0, 4096);
PDEBUG(("Y-size on command line = %d\n", initial_y));
break;
case '?': usage(func);
#ifndef DOS
PERROR(("Bad option '-%c'\n",(char)optopt));
#endif
exit(-1);
break;
default: PERROR(("getopt returned unknown token '%c'.\n",c));
}
#endif
PVERSION;
/*
* start doing something useful
*/
if (!program_hardware) return(0);
PWARNING(("Please be patient. This may take a while (up to 1 minute)\n"));
getmode(&m, probe_clock, raw_mode, initial_x, initial_y);
if (func == CLOCKPROBE)
{
if (pipeable)
{
printf("%1.2f\n", m.mode_line.pixelClock/1000.0);
}
else
{
PMESSAGE(("Estimated vertical scanrate = %1.3f Hz.\n", m.mode_line.vfreq/1000.0));
PMESSAGE(("Estimated horizontal scanrate = %1.3f kHz.\n", m.mode_line.hfreq/1000.0));
PMESSAGE(("Estimated pixel clock = %1.2f MHz\n", m.mode_line.pixelClock/1000.0));
if (GMOFLG_ISSET(m,CLOCKDIV2))
PMESSAGE(("NOTE: actual clock is %1.2f MHz, but it is divided by 2.\n", m.mode_line.pixelClock*2/1000.0));
}
return(0);
}
/*
* "grabmode" function.
* From parameters, look for special settings that affect the output
*/
/* auto selection between graphics/text mode if not defined on command line */
if (Xmode==MODE_UNDEFINED) Xmode = m.txt_gr_mode;
/*
* Print the mode line
*/
if (Xmode==MODE_TEXT)
printf("\"%dx%d\" ", m.mode_line.HDisplay/8, m.mode_line.VDisplay/m.mode_line.FontHeight);
else
printf("\"%dx%d\" ", m.mode_line.HDisplay, m.mode_line.VDisplay);
if (probe_clock)
printf("%1.3f", m.mode_line.pixelClock/1000.0);
else
printf("***");
printf(" %d %d %d %d %d %d %d %d %cHsync %cVsync",
m.mode_line.HDisplay, m.mode_line.HSyncStart, m.mode_line.HSyncEnd, m.mode_line.HTotal,
m.mode_line.VDisplay, m.mode_line.VSyncStart, m.mode_line.VSyncEnd, m.mode_line.VTotal,
(m.mode_line.hpol==POS) ? '+' : '-',
(m.mode_line.vpol==POS) ? '+' : '-');
if (GMOFLG_ISSET(m,DOUBLESCAN)) printf(" DoubleScan");
if (GMOFLG_ISSET(m,MULTISCAN)) printf(" %sScan", m.mode_line.FontHeight==2 ? "Double" : "Multi");
if (GMOFLG_ISSET(m,INTERLACE)) printf(" Interlace");
if (m.mode_line.hshift) printf(" hshift %d", m.mode_line.hshift);
if (Xmode==MODE_TEXT) printf(" font %dx%d", m.mode_line.FontWidth, m.mode_line.FontHeight);
if (probe_clock)
printf(" # %1.3fkHz/%1.2fHz\n", m.mode_line.hfreq/1000.0, m.mode_line.vfreq/1000.0);
else
printf("\n");
if (showblank)
printf("# Blanking: H=%d-%d ; V=%d-%d\n", m.starthbl, m.endhbl, m.startvbl, m.endvbl);
if (verbose)
{
printf("# Active special VGA register flags: ");
if (m.mode_flags == 0) printf("none.");
if (GMOFLG_ISSET(m,DOUBLESCAN)) printf("DOUBLESCAN ");
if (GMOFLG_ISSET(m,CLOCKDIV2)) printf("CLOCKDIV2 ");
if (GMOFLG_ISSET(m,MULTISCAN)) printf("MULTISCAN ");
if (GMOFLG_ISSET(m,BYTEMODE)) printf("BYTEMODE ");
if (GMOFLG_ISSET(m,WORDMODE)) printf("WORDMODE ");
if (GMOFLG_ISSET(m,DOUBLEWORDMODE)) printf("DOUBLEWORDMODE ");
if (GMOFLG_ISSET(m,VERT_DOUBLE)) printf("VERT_DOUBLE ");
if (GMOFLG_ISSET(m,PCS_DIV2)) printf("PCS_DIV2 ");
if (GMOFLG_ISSET(m,CNT_BY_2)) printf("CNT_BY_2 ");
if (GMOFLG_ISSET(m,INTERLACE)) printf("INTERLACE ");
if (GMOFLG_ISSET(m,SHIFT_CGA256C)) printf("SHIFT_CGA256C ");
if (GMOFLG_ISSET(m,SHIFT_CGA4C)) printf("SHIFT_CGA4C ");
printf("\n");
}
if (m.remarks!=0)
{
PDEBUG(("Remarks mask: 0x%4X\n", m.remarks));
fputc('\n', stderr);
PWARNING(("Grabbed mode could be wrong. Below is a list of remarks about it:\n\n"));
for (i=0; mode_messages[i].msg_mask >0 ; i++)
{
if ((m.remarks & (1<<i)) != 0)
{
if ((1<<i)==MSG_CLOCK_MEASUREMENTS)
fprintf(stderr, mode_messages[i].msg_txt,m.valid_measurements);
else
fprintf(stderr, mode_messages[i].msg_txt);
fputc('\n', stderr);
}
}
}
return(0);
}
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