fw_builder/bootsplash/fbresolution.c

/*
 * 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>
#define VERSION "0.1.1"

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;
}
1	niro	658	/*
2			* framebuffer tool, inspired from fbi ((c) 1998,99 Gerd Knorr <kraxel@goldbach.in-berlin.de>)
3			*
4			* (c) 2002 Florent Villard (warly@mandrakesoft.com)
5			*
6			*/
7
8			#include <stdio.h>
9			#include <stdlib.h>
10			#include <string.h>
11			#include <fcntl.h>
12			#include <errno.h>
13			#include <getopt.h>
14			#include <sys/ioctl.h>
15			#include <linux/fb.h>
16			#define VERSION "0.1.1"
17
18			int fd;
19			static int fb;
20			struct fb_var_screeninfo fb_var;
21
22			struct option fbresol_options[] = {
23			{"version", no_argument, NULL, 'v'}, /* version */
24			{"help", no_argument, NULL, 'h'}, /* help */
25			{0, 0, 0, 0}
26			};
27
28			void version(void)
29			{
30			fprintf(stderr, "fbresolution version " VERSION
31			" (c) 2002 Florent Villard <warly@mandrakesoft.com>; compiled on %s.\n",
32			__DATE__);
33			}
34
35			void usage(char *name)
36			{
37			char *h;
38			h = strrchr(name, '/');
39			fprintf(stderr,
40			"\n"
41			"This program output the current framebuffer resolution.\n"
42			"\n"
43			" Usage: %s [ options ]\n"
44			"\n"
45			" --help [-h] Print this text\n"
46			" --version [-v] Show the %s version number\n"
47			"\n" "\n", h ? h + 1 : name, h ? h + 1 : name);
48			}
49
50			int main(int argc, char *argv[])
51			{
52			int opt_index = 0;
53			int c;
54			for (;;) {
55			c = getopt_long(argc, argv, "vhnd:t:", fbresol_options,
56			&opt_index);
57			if (c == -1)
58			break;
59			switch (c) {
60			case 'v':
61			version();
62			exit(1);
63			break;
64			default:
65			case 'h':
66			usage(argv[0]);
67			exit(1);
68			}
69			}
70			if (optind > argc) {
71			usage(argv[0]);
72			exit(1);
73			}
74			if (-1 == (fb = open("/dev/fb0", O_RDWR /* O_WRONLY */ ))) {
75			fprintf(stderr, "open /dev/fb0: %s\n", strerror(errno));
76			exit(1);
77			}
78			if (-1 == ioctl(fb, FBIOGET_VSCREENINFO, &fb_var)) {
79			perror("ioctl FBIOGET_VSCREENINFO");
80			exit(1);
81			}
82			printf("%dx%d\n", fb_var.xres, fb_var.yres);
83			return 0;
84			}