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annotate fbt.c @ 2:bac8ed8d6eb9

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add jpeg coding and test stuff
author Peter Meerwald <pmeerw@pmeerw.net>
date Sun, 08 May 2011 18:22:22 +0200
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children e8957085fe8a
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2
bac8ed8d6eb9 add jpeg coding and test stuff
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1 #include <stdlib.h>
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2 #include <stdio.h>
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3 #include <fcntl.h>
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4 #include <sys/ioctl.h>
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5
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6 #include "linux/fb.h"
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7
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8 int main(int argc, char *argv[]) {
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9
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10 int fd = open("/dev/fb0", O_RDWR);
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11 if (fd < 0) {
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12 perror("");
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13 exit(EXIT_FAILURE);
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14 }
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15
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16 struct fb_fix_screeninfo sif;
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17 if (ioctl(fd, FBIOGET_VSCREENINFO, &sif) < 0) {
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18 perror("");
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19 exit(EXIT_FAILURE);
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20 }
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21
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22 printf("id %s\n", sif.id);
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23 printf("type %d, aux %d\n", sif.type, sif.type_aux);
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24 printf("visual %d\n", sif.visual);
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25 printf("accel %d\n", sif.accel);
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26 printf("line length %d\n", sif.line_length);
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27
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28 struct fb_var_screeninfo siv;
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29 if (ioctl(fd, FBIOGET_VSCREENINFO, &siv) < 0) {
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30 perror("");
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31 exit(EXIT_FAILURE);
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32 }
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33
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34 printf("res x %d y %d\n", siv.xres, siv.yres);
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35 printf("bpp %d\n", siv.bits_per_pixel);
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36
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37 exit(EXIT_SUCCESS);
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38 }

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