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dos33fsprogs
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png2gr: finish text based version

This commit is contained in:
Vince Weaver 2018-11-19 16:07:05 -05:00
parent 18aab4ba25
commit 0868287743
1 changed files with 25 additions and 11 deletions
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36
gr-utils/png2gr_text.c
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@ -9,9 +9,7 @@
#include "loadpng.h"
/* Converts a PNG to a GR file you can BLOAD to 0x400 */
/* HOWEVER you *never* want to do this in real life */
/* as it will clobber important values in the memory holes */
/* Converts a PNG to a GR file you can include in your code */
int main(int argc, char **argv) {
@ -24,16 +22,12 @@ int main(int argc, char **argv) {
int xsize,ysize;
FILE *outfile;
if (argc<3) {
fprintf(stderr,"Usage:\t%s INFILE OUTFILE\n\n",argv[0]);
if (argc<2) {
fprintf(stderr,"Usage:\t%s INFILE\n\n",argv[0]);
exit(-1);
}
outfile=fopen(argv[2],"w");
if (outfile==NULL) {
fprintf(stderr,"Error! Could not open %s\n",argv[2]);
exit(-1);
}
outfile=stdout;
if (loadpng(argv[1],&image,&xsize,&ysize)<0) {
fprintf(stderr,"Error loading png!\n");
@ -55,7 +49,27 @@ int main(int argc, char **argv) {
}
}
for(x=0;x<1024;x++) fputc( out_buffer[x],outfile);
int line=0,which=0;
for(x=0;x<1024;x++) {
line=x%128;
which=(x/128)+(line/40)*8;
if (line%40==0) {
if (line==120) {
fprintf(outfile,"\n; SCREEN HOLE");
}
else {
fprintf(outfile,"\n; LINE %d-%d",
which*2,(which*2)+1);
}
}
if (line%10==0) {
fprintf(outfile,"\n.byte ");
}
fprintf(outfile,"$%02X",out_buffer[x]);
if ((line%10!=9) && (line!=127)) fprintf(outfile,",");
}
fprintf(outfile,"\n");
fclose(outfile);