dos33fsprogs/gr-utils/png2sixbitmap.c
2020-10-20 02:01:54 -04:00

56 lines
834 B
C

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include "loadpng.h"
/* Converts a PNG to a shifted 6 bitmap */
int main(int argc, char **argv) {
int row=0;
int col=0;
unsigned char ch;
unsigned char *image;
int xsize,ysize;
if (argc<2) {
fprintf(stderr,"Usage:\t%s INFILE\n\n",argv[0]);
exit(-1);
}
if (loadpng(argv[1],&image,&xsize,&ysize,PNG_WHOLETHING)<0) {
fprintf(stderr,"Error loading png!\n");
exit(-1);
}
fprintf(stderr,"Loaded image %d by %d\n",xsize,ysize);
ch=0;
for(row=0;row<24;row++) {
for(col=0;col<40;col++) {
if (image[row*xsize+col]) {
ch|=1<<5;
}
if ((row*xsize+col)%6==5) {
printf("%c",ch+32);
ch=0;
}
else {
ch>>=1;
}
}
}
printf("\n");
return 0;
}