1
2 #include <stdio.h>
3 #include <stdlib.h>
4 #include "gd.h"
5
6 /* A short program which converts a .png file into a .gd file, for
7 your convenience in creating images on the fly from a
8 basis image that must be loaded quickly. The .gd format
9 is not intended to be a general-purpose format. */
10
11 int
main(int argc,char ** argv)12 main (int argc, char **argv)
13 {
14 gdImagePtr im;
15 FILE *in, *out;
16 int cs, fmt;
17
18 if (argc != 5)
19 {
20 fprintf (stderr, "Usage: pngtogd2 filename.png filename.gd2 cs fmt\n");
21 fprintf (stderr, " where cs is the chunk size\n");
22 fprintf (stderr, " fmt is 1 for raw, 2 for compressed\n");
23 exit (1);
24 }
25 in = fopen (argv[1], "rb");
26 if (!in)
27 {
28 fprintf (stderr, "Input file does not exist!\n");
29 exit (1);
30 }
31 im = gdImageCreateFromPng (in);
32 fclose (in);
33 if (!im)
34 {
35 fprintf (stderr, "Input is not in PNG format!\n");
36 exit (1);
37 }
38 out = fopen (argv[2], "wb");
39 if (!out)
40 {
41 fprintf (stderr, "Output file cannot be written to!\n");
42 gdImageDestroy (im);
43 exit (1);
44 }
45 cs = atoi (argv[3]);
46 fmt = atoi (argv[4]);
47 gdImageGd2 (im, out, cs, fmt);
48 fclose (out);
49 gdImageDestroy (im);
50
51 return 0;
52 }
53
