mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-06-13 03:29:32 +00:00
437 lines
8.2 KiB
C
437 lines
8.2 KiB
C
/* Convert a 40x96 image into two, 40x48 images suitable of loading */
|
|
/* with my kfest18 based code */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
|
|
#include <png.h>
|
|
|
|
#define OUTPUT_C 0
|
|
#define OUTPUT_ASM 1
|
|
|
|
|
|
static int convert_color(int color) {
|
|
|
|
int c=0;
|
|
|
|
switch(color) {
|
|
case 0x000000: c=0; break; /* black */
|
|
case 0xe31e60: c=1; break; /* magenta */
|
|
case 0x604ebd: c=2; break; /* dark blue */
|
|
case 0xff44fd: c=3; break; /* purple */
|
|
case 0x00a360: c=4; break; /* dark green */
|
|
case 0x9c9c9c: c=5; break; /* grey 1 */
|
|
case 0x14cffd: c=6; break; /* medium blue */
|
|
case 0xd0c3ff: c=7; break; /* light blue */
|
|
case 0x607203: c=8; break; /* brown */
|
|
case 0xff6a3c: c=9; break; /* orange */
|
|
case 0x9d9d9d: c=10; break; /* grey 2 */
|
|
case 0xffa0d0: c=11; break; /* pink */
|
|
case 0x14f53c: c=12; break; /* bright green */
|
|
case 0xd0dd8d: c=13; break; /* yellow */
|
|
case 0x72ffd0: c=14; break; /* aqua */
|
|
case 0xffffff: c=15; break; /* white */
|
|
default:
|
|
printf("Unknown color %x\n",color);
|
|
break;
|
|
}
|
|
|
|
return c;
|
|
}
|
|
|
|
|
|
|
|
/* expects a PNG where the xsize is *2 */
|
|
int loadpng(char *filename, unsigned char **image_ptr, int *xsize, int *ysize,
|
|
int high) {
|
|
|
|
int x,y;
|
|
int color;
|
|
FILE *infile;
|
|
int debug=0;
|
|
unsigned char *image,*out_ptr;
|
|
int width, height;
|
|
int a2_color;
|
|
|
|
png_byte bit_depth;
|
|
png_structp png_ptr;
|
|
png_infop info_ptr;
|
|
png_bytep *row_pointers;
|
|
png_byte color_type;
|
|
// int number_of_passes;
|
|
|
|
unsigned char header[8];
|
|
|
|
/* open file and test for it being a png */
|
|
infile = fopen(filename, "rb");
|
|
if (infile==NULL) {
|
|
fprintf(stderr,"Error! Could not open %s\n",filename);
|
|
return -1;
|
|
}
|
|
|
|
/* Check the header */
|
|
fread(header, 1, 8, infile);
|
|
if (png_sig_cmp(header, 0, 8)) {
|
|
fprintf(stderr,"Error! %s is not a PNG file\n",filename);
|
|
return -1;
|
|
}
|
|
|
|
/* initialize stuff */
|
|
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
|
|
if (!png_ptr) {
|
|
fprintf(stderr,"Error create_read_struct\n");
|
|
exit(-1);
|
|
}
|
|
|
|
info_ptr = png_create_info_struct(png_ptr);
|
|
if (!info_ptr) {
|
|
fprintf(stderr,"Error png_create_info_struct\n");
|
|
exit(-1);
|
|
}
|
|
|
|
png_init_io(png_ptr, infile);
|
|
png_set_sig_bytes(png_ptr, 8);
|
|
|
|
png_read_info(png_ptr, info_ptr);
|
|
|
|
width = png_get_image_width(png_ptr, info_ptr);
|
|
height = png_get_image_height(png_ptr, info_ptr);
|
|
*xsize=width;
|
|
*ysize=height/2;
|
|
|
|
color_type = png_get_color_type(png_ptr, info_ptr);
|
|
bit_depth = png_get_bit_depth(png_ptr, info_ptr);
|
|
|
|
|
|
|
|
if (debug) {
|
|
printf("PNG: width=%d height=%d depth=%d\n",width,height,bit_depth);
|
|
if (color_type==PNG_COLOR_TYPE_RGB) printf("Type RGB\n");
|
|
else if (color_type==PNG_COLOR_TYPE_RGB_ALPHA) printf("Type RGBA\n");
|
|
else if (color_type==PNG_COLOR_TYPE_PALETTE) printf("Type palette\n");
|
|
}
|
|
|
|
// number_of_passes = png_set_interlace_handling(png_ptr);
|
|
png_read_update_info(png_ptr, info_ptr);
|
|
|
|
row_pointers = (png_bytep*) malloc(sizeof(png_bytep) * height);
|
|
for (y=0; y<height; y++) {
|
|
row_pointers[y] = (png_byte*) malloc(png_get_rowbytes(png_ptr,info_ptr));
|
|
}
|
|
|
|
png_read_image(png_ptr, row_pointers);
|
|
|
|
fclose(infile);
|
|
|
|
image=calloc(width*height,sizeof(unsigned char));
|
|
if (image==NULL) {
|
|
fprintf(stderr,"Memory error!\n");
|
|
return -1;
|
|
}
|
|
out_ptr=image;
|
|
|
|
if (color_type==PNG_COLOR_TYPE_RGB_ALPHA) {
|
|
for(y=high;y<height;y+=4) {
|
|
for(x=0;x<width;x++) {
|
|
|
|
/* top color */
|
|
color= (row_pointers[y][x*4]<<16)+
|
|
(row_pointers[y][x*4+1]<<8)+
|
|
(row_pointers[y][x*4+2]);
|
|
if (debug) {
|
|
printf("%x ",color);
|
|
}
|
|
|
|
a2_color=convert_color(color);
|
|
|
|
/* bottom color */
|
|
color= (row_pointers[y+2][x*4]<<16)+
|
|
(row_pointers[y+2][x*4+1]<<8)+
|
|
(row_pointers[y+2][x*4+2]);
|
|
if (debug) {
|
|
printf("%x ",color);
|
|
}
|
|
|
|
a2_color|=(convert_color(color)<<4);
|
|
|
|
*out_ptr=a2_color;
|
|
out_ptr++;
|
|
}
|
|
if (debug) printf("\n");
|
|
}
|
|
}
|
|
else if (color_type==PNG_COLOR_TYPE_PALETTE) {
|
|
for(y=high;y<height;y+=4) {
|
|
for(x=0;x<width;x++) {
|
|
|
|
/* top color */
|
|
a2_color=row_pointers[y][x];
|
|
|
|
/* bottom color */
|
|
color=row_pointers[y+2][x];
|
|
|
|
a2_color|=(color<<4);
|
|
|
|
if (debug) {
|
|
printf("%x ",a2_color);
|
|
}
|
|
|
|
*out_ptr=a2_color;
|
|
out_ptr++;
|
|
}
|
|
if (debug) printf("\n");
|
|
}
|
|
}
|
|
else {
|
|
printf("Unknown color type\n");
|
|
}
|
|
|
|
/* Stripe test image */
|
|
// for(x=0;x<40;x++) for(y=0;y<40;y++) image[(y*width)+x]=y%16;
|
|
|
|
/*
|
|
Addr Row /80 %40
|
|
$400 0 0 0 0
|
|
$428 28 16 0
|
|
$450 50 32 0
|
|
$480 80 2 1
|
|
$4A8 a8 18 1
|
|
$4D0 d0 34 1
|
|
$500 100 3 2
|
|
0,0 0,1 0,2....0,39 16,0 16,1 ....16,39 32,0..32,39, X X X X X X X X
|
|
*/
|
|
|
|
*image_ptr=image;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*****************************************/
|
|
/* \/ \/ */
|
|
/* Converts a PNG to RLE compressed data */
|
|
/*****************************************/
|
|
|
|
|
|
static int print_run(int count, int out_type, int run, int last) {
|
|
|
|
int size=0;
|
|
|
|
if (count==0) {
|
|
if (out_type==OUTPUT_C) {
|
|
printf("\n\t");
|
|
}
|
|
else {
|
|
printf("\n\t.byte ");
|
|
}
|
|
}
|
|
else {
|
|
if (out_type==OUTPUT_C) {
|
|
}
|
|
else {
|
|
printf(", ");
|
|
}
|
|
}
|
|
|
|
if (run==1) {
|
|
if (out_type==OUTPUT_C) {
|
|
printf("0x%02X,",last);
|
|
}
|
|
else {
|
|
printf("$%02X",last);
|
|
}
|
|
size++;
|
|
}
|
|
if (run==2) {
|
|
if (out_type==OUTPUT_C) {
|
|
printf("0x%02X,0x%02X,",last,last);
|
|
}
|
|
else {
|
|
printf("$%02X,$%02X",last,last);
|
|
}
|
|
size+=2;
|
|
}
|
|
|
|
if ((run>2) && (run<16)) {
|
|
if (out_type==OUTPUT_C) {
|
|
printf("0x%02X,0x%02X,",0xA0|run,last);
|
|
}
|
|
else {
|
|
printf("$%02X,$%02X",0xA0|run,last);
|
|
}
|
|
size+=2;
|
|
}
|
|
|
|
if (run>=16) {
|
|
if (out_type==OUTPUT_C) {
|
|
printf("0x%02X,0x%02X,0x%02X,",0xA0,run,last);
|
|
}
|
|
else {
|
|
printf("$%02X,$%02X,$%02X",0xA0,run,last);
|
|
}
|
|
size+=3;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
int rle_smaller(int out_type, char *varname,
|
|
int xsize,int ysize, unsigned char *image,int high) {
|
|
|
|
int run=0;
|
|
int x;
|
|
|
|
int last=-1,next;
|
|
int size=0;
|
|
int count=0;
|
|
|
|
x=0;
|
|
|
|
/* Write out xsize and ysize */
|
|
|
|
if (out_type==OUTPUT_C) {
|
|
fprintf(stdout,"unsigned char %s_%s[]={\n",varname,
|
|
high?"high":"low");
|
|
fprintf(stdout,"\t0x%X, /* ysize=%d */",xsize,ysize);
|
|
}
|
|
else {
|
|
fprintf(stdout,"%s_%s:",varname,high?"high":"low");
|
|
fprintf(stdout,"\t.byte $%X ; ysize=%d",xsize,ysize);
|
|
}
|
|
|
|
size+=2;
|
|
|
|
/* Get first top/bottom color pair */
|
|
last=image[x];
|
|
run++;
|
|
x++;
|
|
|
|
while(1) {
|
|
|
|
/* get next top/bottom color pair */
|
|
next=image[x];
|
|
|
|
if ((next&0xf0)==0xA0) {
|
|
fprintf(stderr,"Warning! Using color A (grey2)!\n");
|
|
next&=~0xf0;
|
|
next|=0x50; // substitute grey1
|
|
}
|
|
|
|
/* If color change (or too big) then output our run */
|
|
/* Note 0xff for run length is special case meaning "finished" */
|
|
if ((next!=last) || (run>254)) {
|
|
|
|
size+=print_run(count,out_type,run,last);
|
|
|
|
count++;
|
|
run=0;
|
|
last=next;
|
|
}
|
|
|
|
x++;
|
|
|
|
/* If we reach the end */
|
|
if (x>=xsize*(ysize/2)) {
|
|
run++;
|
|
|
|
size+=print_run(count,out_type,run,last);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
run++;
|
|
if (count>6) count=0;
|
|
|
|
}
|
|
|
|
/* Print closing marker */
|
|
|
|
if (out_type==OUTPUT_C) {
|
|
fprintf(stdout,"0xA1,");
|
|
fprintf(stdout,"\t};\n");
|
|
} else {
|
|
fprintf(stdout,"\n\t.byte $A1\n");
|
|
}
|
|
|
|
size+=1;
|
|
|
|
return size;
|
|
}
|
|
|
|
|
|
|
|
/* Converts a PNG to RLE compressed data */
|
|
|
|
int main(int argc, char **argv) {
|
|
|
|
unsigned char *image;
|
|
int xsize,ysize;
|
|
int size=0;
|
|
int out_type=OUTPUT_C;
|
|
|
|
if (argc<4) {
|
|
fprintf(stderr,"Usage:\t%s type INFILE varname\n\n",argv[0]);
|
|
fprintf(stderr,"\ttype: c or asm\n");
|
|
fprintf(stderr,"\tvarname: label for graphic\n");
|
|
fprintf(stderr,"\n");
|
|
|
|
exit(-1);
|
|
}
|
|
|
|
if (!strcmp(argv[1],"c")) {
|
|
out_type=OUTPUT_C;
|
|
}
|
|
else if (!strcmp(argv[1],"asm")) {
|
|
out_type=OUTPUT_ASM;
|
|
}
|
|
|
|
if (loadpng(argv[2],&image,&xsize,&ysize,1)<0) {
|
|
fprintf(stderr,"Error loading png!\n");
|
|
exit(-1);
|
|
}
|
|
|
|
fprintf(stderr,"Loaded image %d by %d\n",xsize,ysize);
|
|
|
|
// size=rle_original(out_type,argv[3],
|
|
// xsize,ysize,image);
|
|
|
|
size=rle_smaller(out_type,argv[3],
|
|
xsize,ysize,image,0);
|
|
|
|
fprintf(stderr,"Size %d bytes\n",size);
|
|
|
|
if (loadpng(argv[2],&image,&xsize,&ysize,0)<0) {
|
|
fprintf(stderr,"Error loading png!\n");
|
|
exit(-1);
|
|
}
|
|
|
|
fprintf(stderr,"Loaded image %d by %d\n",xsize,ysize);
|
|
|
|
// size=rle_original(out_type,argv[3],
|
|
// xsize,ysize,image);
|
|
|
|
size=rle_smaller(out_type,argv[3],
|
|
xsize,ysize,image,1);
|
|
|
|
fprintf(stderr,"Size %d bytes\n",size);
|
|
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|