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/*
* framebuffer tool, inspired from fbi ((c) 1998,99 Gerd Knorr <kraxel@goldbach.in-berlin.de>)
*
* (c) 2002 Florent Villard (warly@mandrakesoft.com)
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <getopt.h>
#include <sys/ioctl.h>
#include <linux/fb.h>
int fd;
static int fb;
struct fb_var_screeninfo fb_var;
struct option fbresol_options[] = {
{"version", no_argument, NULL, 'v'}, /* version */
{"help", no_argument, NULL, 'h'}, /* help */
{0,0,0,0}
};
void
version(void)
{
fprintf(stderr, "fbresolution version " VERSION
" (c) 2002 Florent Villard <warly@mandrakesoft.com>; compiled on %s.\n", __DATE__ );
}
void
usage(char *name)
{
char *h;
h = strrchr(name, '/');
fprintf(stderr,
"\n"
"This program output the current framebuffer resolution.\n"
"\n"
" Usage: %s [ options ]\n"
"\n"
" --help [-h] Print this text\n"
" --version [-v] Show the %s version number\n"
"\n"
"\n"
,h ? h + 1 : name, h ? h + 1 : name);
}
int
main(int argc, char *argv[])
{
int opt_index = 0;
int c;
for (;;) {
c = getopt_long(argc, argv, "vhnd:t:", fbresol_options, &opt_index);
if (c == -1)
break;
switch (c) {
case 'v':
version();
exit(1);
break;
default:
case 'h':
usage(argv[0]);
exit(1);
}
}
if (optind > argc) {
usage(argv[0]);
exit(1);
}
if (-1 == (fb = open("/dev/fb0",O_RDWR /* O_WRONLY */))) {
fprintf(stderr,"open /dev/fb0: %s\n",strerror(errno));
exit(1);
}
if (-1 == ioctl(fb,FBIOGET_VSCREENINFO,&fb_var)) {
perror("ioctl FBIOGET_VSCREENINFO");
exit(1);
}
printf("%dx%d\n",fb_var.xres,fb_var.yres);
return 0;
}
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