mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-09-10 08:54:51 +00:00
345 lines
5.8 KiB
C
345 lines
5.8 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include "rle_common.h"
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/*****************************************/
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/* \/ \/ */
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/* Converts a PNG to RLE compressed data */
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/*****************************************/
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static int cycles=0;
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static int print_run(int count, int out_type, int run, int last) {
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int size=0;
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if (count==0) {
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if (out_type==OUTPUT_C) {
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printf("\n\t");
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}
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else if (out_type==OUTPUT_ASM) {
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printf("\n\t.byte ");
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}
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}
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else {
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if (out_type==OUTPUT_C) {
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}
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else if (out_type==OUTPUT_ASM) {
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printf(", ");
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}
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}
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if (run==1) {
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if ((last&0xf0)==0xA0) {
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if (out_type==OUTPUT_C) {
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printf("0x%02X,0x%02X,0x%02X,",0xa0,1,last);
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}
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else if (out_type==OUTPUT_ASM) {
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printf("$%02X,$%02X,$%02X",0xa0,1,last);
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}
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else {
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printf("%c%c%c",0xa0,1,last);
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}
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size+=3;
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cycles+=38+7+ 27+ 27*1 +5+2;
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}
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else {
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if (out_type==OUTPUT_C) {
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printf("0x%02X,",last);
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}
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else if (out_type==OUTPUT_ASM) {
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printf("$%02X",last);
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}
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else {
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printf("%c",last);
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}
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size++;
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cycles+=38+6+ 19*1 +5+2;
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}
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}
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if (run==2) {
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if ((last&0xf0)==0xA0) {
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if (out_type==OUTPUT_C) {
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printf("0x%02X,0x%02X,0x%02X,",0xa0,2,last);
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}
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else if (out_type==OUTPUT_ASM) {
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printf("$%02X,$%02X,$%02X",0xa0,2,last);
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}
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else {
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printf("%c%c%c",0xa0,2,last);
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}
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size+=3;
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cycles+=38+7+ 27+ 27*2 +5+2;
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}
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else {
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if (out_type==OUTPUT_C) {
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printf("0x%02X,0x%02X,",last,last);
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}
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else if (out_type==OUTPUT_ASM) {
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printf("$%02X,$%02X",last,last);
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}
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else {
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printf("%c",last);
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printf("%c",last);
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}
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size+=2;
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cycles+=38+7+ 27+ 27*1 +5+2;
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cycles+=38+7+ 27+ 27*1 +5+2;
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}
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}
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if ((run>2) && (run<16)) {
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if (out_type==OUTPUT_C) {
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printf("0x%02X,0x%02X,",0xA0|run,last);
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}
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else if (out_type==OUTPUT_ASM) {
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printf("$%02X,$%02X",0xA0|run,last);
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}
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else {
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printf("%c",0xA0|run);
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printf("%c",last);
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}
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size+=2;
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cycles+=38+7+ 27+ 27*run +5+2;
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}
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if (run>=16) {
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if (out_type==OUTPUT_C) {
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printf("0x%02X,0x%02X,0x%02X,",0xA0,run,last);
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}
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else if (out_type==OUTPUT_ASM) {
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printf("$%02X,$%02X,$%02X",0xA0,run,last);
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}
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else {
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printf("%c",0xA0);
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printf("%c",run);
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printf("%c",last);
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}
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size+=3;
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cycles=38+7+24+27+ 27*run +5+2;
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}
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return size;
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}
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int rle_smaller(int out_type, char *varname,
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int xsize,int ysize, unsigned char *image) {
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int run=0;
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int x;
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int last=-1,next;
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int size=0;
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int count=0;
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x=0;
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/* Write out xsize and ysize */
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if (out_type==OUTPUT_C) {
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fprintf(stdout,"unsigned char %s[]={\n",varname);
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fprintf(stdout,"\t0x%X, /* ysize=%d */",xsize,ysize);
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}
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else if (out_type==OUTPUT_ASM) {
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fprintf(stdout,"%s:",varname);
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fprintf(stdout,"\t.byte $%X ; ysize=%d",xsize,ysize);
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} else {
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fprintf(stdout,"%c",xsize);
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}
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size+=1;
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/* Get first top/bottom color pair */
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last=image[x];
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run++;
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x++;
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while(1) {
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/* get next top/bottom color pair */
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next=image[x];
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// if ((next&0xf0)==0xA0) {
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// fprintf(stderr,"Warning! Using color A (grey2)!\n");
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// next&=~0xf0;
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// next|=0x50; // substitute grey1
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// }
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/* If color change (or too big) then output our run */
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if ((next!=last) || (run>254)) {
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size+=print_run(count,out_type,run,last);
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count++;
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run=0;
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last=next;
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}
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x++;
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/* If we reach the end */
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if (x>=xsize*(ysize/2)) {
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run++;
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size+=print_run(count,out_type,run,last);
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break;
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}
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run++;
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if (count>6) count=0;
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}
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/* Print closing marker */
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if (out_type==OUTPUT_C) {
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fprintf(stdout,"0xA1,");
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fprintf(stdout,"\t};\n");
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} else if (out_type==OUTPUT_ASM) {
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fprintf(stdout,"\n\t.byte $A1\n");
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fprintf(stdout,"; cycles=%d\n",cycles);
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} else {
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fprintf(stdout,"%c",0xA1);
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}
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size+=1;
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return size;
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}
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#if 0
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/* Converts a PNG to RLE compressed data */
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int rle_original(int out_type, char *varname,
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int xsize,int ysize, unsigned char *image) {
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int run=0;
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int x;
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int last=-1,next;
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int size=0;
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int count=0;
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x=0;
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/* Write out xsize and ysize */
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if (out_type==OUTPUT_C) {
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fprintf(stdout,"unsigned char %s[]={\n",varname);
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fprintf(stdout,"\t0x%X,0x%X,",xsize,ysize);
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}
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else if (out_type==OUTPUT_ASM) {
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fprintf(stdout,"%s:",varname);
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fprintf(stdout,"\t.byte $%X,$%X",xsize,ysize);
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}
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size+=2;
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/* Get first top/bottom color pair */
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last=image[x];
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run++;
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x++;
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while(1) {
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/* get next top/bottom color pair */
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next=image[x];
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/* If color change (or too big) then output our run */
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/* Note 0xff for run length is special case meaning "finished" */
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if ((next!=last) || (run>253)) {
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/* handle new line */
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if (out_type==OUTPUT_C) {
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if (count==0) {
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printf("\n\t");
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}
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}
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else if (out_type==OUTPUT_ASM) {
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if (count==0) {
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printf("\n\t.byte ");
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}
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else {
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printf(", ");
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}
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}
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if (out_type==OUTPUT_C) {
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printf("0x%02X,0x%02X, ",run,last);
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}
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else if (out_type==OUTPUT_ASM) {
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printf("$%02X,$%02X",run,last);
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}
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else {
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printf("%c",run);
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printf("%c",last);
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}
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size+=2;
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count++;
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run=0;
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last=next;
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}
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x++;
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/* If we reach the end */
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if (x>=xsize*(ysize/2)) {
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run++;
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/* print tailing value */
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if (run!=0) {
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if (out_type==OUTPUT_C) {
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printf("0x%02X,0x%02X, ",run,last);
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}
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else if (out_type==OUTPUT_ASM) {
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if (count==0) {
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printf("\n\t.byte ");
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}
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else {
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printf(", ");
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}
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printf("$%02X,$%02X\n",run,last);
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} else {
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printf("%c",run);
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printf("%c",last);
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}
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size+=2;
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}
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break;
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}
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run++;
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if (count>6) count=0;
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}
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/* Print closing marker */
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if (out_type==OUTPUT_C) {
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fprintf(stdout,"0xFF,0xFF,");
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fprintf(stdout,"\t};\n");
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} else if (out_type==OUTPUT_ASM) {
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fprintf(stdout,"\t.byte $FF,$FF\n");
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}
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size+=2;
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return size;
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}
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#endif
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