59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
/**
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* A short program which converts a .png file into a .avif file -
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* just to get a little practice with the basic functionality.
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* We convert losslessly.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif /* HAVE_CONFIG_H */
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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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int 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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if (argc != 3) {
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fprintf(stderr, "Usage: png2avif infile.png outfile.avif\n");
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exit(1);
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}
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printf("Reading infile %s\n", argv[1]);
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in = fopen(argv[1], "rb");
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if (!in) {
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fprintf(stderr, "Error: input file %s does not exist.\n", argv[1]);
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exit(1);
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}
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im = gdImageCreateFromPng(in);
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fclose(in);
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if (!im) {
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fprintf(stderr, "Error: input file %s is not in PNG format.\n", argv[1]);
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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, "Error: can't write to output file %s\n", argv[2]);
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gdImageDestroy(im);
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exit(1);
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}
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fprintf(stderr, "Encoding...\n");
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gdImageAvifEx(im, out, 100, 0);
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printf("Wrote outfile %s.\n", argv[2]);
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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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