mirror of
https://github.com/mpv-player/mpv
synced 2024-12-16 20:05:07 +00:00
80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
/* this is userspace utility which allows you to redirect console to another fb device
|
|
* You can specify devices & consoles by both numbers and devices. Framebuffers numbers
|
|
* are zero based (/dev/fb0 ... ), consoles begins with 1 (/dev/tty1 ... )
|
|
*/
|
|
#include <linux/fb.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
int main(int argc, char* argv[]) {
|
|
struct fb_con2fbmap c2m;
|
|
char* fbPath;
|
|
u_int32_t con, fb;
|
|
char* e;
|
|
char* progname = strrchr(argv[0], '/');
|
|
int f;
|
|
|
|
if (progname)
|
|
progname++;
|
|
else
|
|
progname = argv[0];
|
|
if (argc < 3) {
|
|
fprintf(stderr, "usage: %s fbdev console\n", progname);
|
|
return 1;
|
|
}
|
|
fb = strtoul(argv[1], &e, 10);
|
|
if (*e) {
|
|
struct stat sbf;
|
|
|
|
if (stat(argv[1], &sbf)) {
|
|
fprintf(stderr, "%s: are you sure that %s can be used to describe fbdev?\n", progname, argv[1]);
|
|
return 1;
|
|
}
|
|
if (!S_ISCHR(sbf.st_mode)) {
|
|
fprintf(stderr, "%s: %s must be character device\n", progname, argv[1]);
|
|
return 1;
|
|
}
|
|
fb = sbf.st_rdev & 0xFF;
|
|
if (fb >= 32)
|
|
fb >>= 5;
|
|
fbPath = argv[1];
|
|
} else
|
|
fbPath = "/dev/fb0";
|
|
con = strtoul(argv[2], &e, 10);
|
|
if (*e) {
|
|
struct stat sbf;
|
|
|
|
if (stat(argv[2], &sbf)) {
|
|
fprintf(stderr, "%s: are you sure that %s can be used to describe vt?\n", progname, argv[2]);
|
|
return 1;
|
|
}
|
|
if (!S_ISCHR(sbf.st_mode)) {
|
|
fprintf(stderr, "%s: %s must be character device\n", progname, argv[2]);
|
|
return 1;
|
|
}
|
|
con = sbf.st_rdev & 0xFF;
|
|
}
|
|
c2m.console = con;
|
|
c2m.framebuffer = fb;
|
|
f = open(fbPath, O_RDWR);
|
|
if (f < 0) {
|
|
fprintf(stderr, "%s: Cannot open %s\n", progname, fbPath);
|
|
return 1;
|
|
}
|
|
if (ioctl(f, FBIOPUT_CON2FBMAP, &c2m)) {
|
|
fprintf(stderr, "%s: Cannot set console mapping\n", progname);
|
|
close(f);
|
|
return 1;
|
|
}
|
|
close(f);
|
|
return 0;
|
|
}
|
|
|
|
|