58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include "gd.h"
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/* A short program which converts a .png file into a .gd2 file, for
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your convenience in creating images on the fly from a
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basis image that must be loaded quickly. The .gd2 format
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is not intended to be a general-purpose format. */
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int
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main (int argc, char **argv)
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{
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gdImagePtr im;
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FILE *in, *out;
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int cs, fmt;
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if (argc != 5) {
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fprintf(stderr, "Usage: pngtogd2 filename.png filename.gd2 cs fmt\n");
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fprintf(stderr, " where cs is the chunk size\n");
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fprintf(stderr, " fmt is 1 for raw, 2 for compressed\n");
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exit (1);
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}
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in = fopen (argv[1], "rb");
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if (!in) {
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fprintf(stderr, "Input file does not exist!\n");
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exit (1);
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}
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#ifdef HAVE_LIBPNG
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im = gdImageCreateFromPng (in);
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#else
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im = NULL;
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fprintf(stderr, "No PNG library support available.\n");
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#endif
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fclose (in);
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if (!im) {
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fprintf(stderr, "Input is not in PNG format!\n");
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exit (1);
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}
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out = fopen (argv[2], "wb");
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if (!out) {
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fprintf(stderr, "Output file cannot be written to!\n");
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gdImageDestroy (im);
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exit (1);
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}
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cs = atoi (argv[3]);
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fmt = atoi (argv[4]);
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gdImageGd2 (im, out, cs, fmt);
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fclose (out);
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gdImageDestroy (im);
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return 0;
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}
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