mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-11-20 03:35:24 +00:00
452 lines
9.6 KiB
C
452 lines
9.6 KiB
C
/* Converts 140x192 8-bit PCX file with correct palette to Apple II HGR */
|
|
|
|
#define VERSION "0.0.1"
|
|
|
|
#include <stdio.h> /* For FILE I/O */
|
|
#include <string.h> /* For strncmp */
|
|
#include <fcntl.h> /* for open() */
|
|
#include <unistd.h> /* for lseek() */
|
|
#include <sys/stat.h> /* for file modes */
|
|
#include <stdlib.h> /* free() */
|
|
|
|
#define PCX_UNKNOWN 0
|
|
#define PCX_8BIT 1
|
|
#define PCX_24BIT 2
|
|
|
|
/* If you want default black a different color try the below */
|
|
/* Useful if you are trying to xdraw to get red/blue */
|
|
#if 0
|
|
/* Default is BLACK0 */
|
|
#define DEFAULT_BLACK -1
|
|
#else
|
|
/* DEFAULT is BLACK1 */
|
|
#define DEFAULT_BLACK 1
|
|
#endif
|
|
|
|
static int debug=0;
|
|
|
|
static int vmwGetPCXInfo(char *filename, int *xsize, int *ysize, int *type) {
|
|
|
|
unsigned char pcx_header[128];
|
|
int xmin,ymin,xmax,ymax,version=PCX_UNKNOWN,bpp,pcx_fd;
|
|
int result;
|
|
|
|
/* Open the file */
|
|
pcx_fd=open(filename,O_RDONLY);
|
|
|
|
if (pcx_fd<0) {
|
|
fprintf(stderr,"ERROR! File \"%s\" not found!\n",filename);
|
|
return -1;
|
|
}
|
|
|
|
lseek(pcx_fd,0,SEEK_SET);
|
|
|
|
result=read(pcx_fd,&pcx_header,128);
|
|
if (result<0) {
|
|
fprintf(stderr,"Error! Could not read header from file %s\n",filename);
|
|
return -1;
|
|
}
|
|
|
|
xmin=(pcx_header[5]<<8)+pcx_header[4];
|
|
ymin=(pcx_header[7]<<8)+pcx_header[6];
|
|
|
|
xmax=(pcx_header[9]<<8)+pcx_header[8];
|
|
ymax=(pcx_header[11]<<8)+pcx_header[10];
|
|
|
|
version=pcx_header[1];
|
|
bpp=pcx_header[3];
|
|
|
|
if (debug) {
|
|
printf("Manufacturer: ");
|
|
if (pcx_header[0]==10) printf("Zsoft\n");
|
|
else printf("Unknown %i\n",pcx_header[0]);
|
|
|
|
printf("Version: ");
|
|
switch(version) {
|
|
case 0: printf("2.5\n"); break;
|
|
case 2: printf("2.8 w palette\n"); break;
|
|
case 3: printf("2.8 w/o palette\n"); break;
|
|
case 4: printf("Paintbrush for Windows\n"); break;
|
|
case 5: printf("3.0+\n"); break;
|
|
default: printf("Unknown %i\n",version);
|
|
}
|
|
printf("Encoding: ");
|
|
if (pcx_header[2]==1) printf("RLE\n");
|
|
else printf("Unknown %i\n",pcx_header[2]);
|
|
|
|
printf("BitsPerPixelPerPlane: %i\n",bpp);
|
|
printf("File goes from %i,%i to %i,%i\n",xmin,ymin,xmax,ymax);
|
|
|
|
printf("Horizontal DPI: %i\n",(pcx_header[13]<<8)+pcx_header[12]);
|
|
printf("Vertical DPI: %i\n",(pcx_header[15]<<8)+pcx_header[14]);
|
|
|
|
printf("Number of colored planes: %i\n",pcx_header[65]);
|
|
printf("Bytes per line: %i\n",(pcx_header[67]<<8)+pcx_header[66]);
|
|
printf("Palette Type: %i\n",(pcx_header[69]<<8)+pcx_header[68]);
|
|
printf("Hscreen Size: %i\n",(pcx_header[71]<<8)+pcx_header[70]);
|
|
printf("Vscreen Size: %i\n",(pcx_header[73]<<8)+pcx_header[72]);
|
|
|
|
}
|
|
|
|
*xsize=(xmax-xmin+1);
|
|
*ysize=(ymax-ymin+1);
|
|
|
|
if ((version==5) && (bpp==8) && (pcx_header[65]==3)) *type=PCX_24BIT;
|
|
else if (version==5) *type=PCX_8BIT;
|
|
else *type=PCX_UNKNOWN;
|
|
|
|
close(pcx_fd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned char colors[256];
|
|
|
|
static int vmwLoadPCX(char *filename, unsigned char *framebuffer) {
|
|
|
|
int pcx_fd;
|
|
int x,i,numacross,xsize,ysize,xmin,ymin;
|
|
unsigned int r,g,b;
|
|
int xmax,ymax;
|
|
unsigned char pcx_header[128];
|
|
unsigned char temp_byte;
|
|
int result;
|
|
unsigned char *pointer=framebuffer;
|
|
|
|
/* Open the file */
|
|
pcx_fd=open(filename,O_RDONLY);
|
|
|
|
if (pcx_fd<0) {
|
|
fprintf(stderr,"ERROR! File \"%s\" not found!\n",filename);
|
|
return -1;
|
|
}
|
|
|
|
/*************** DECODE THE HEADER *************************/
|
|
result=read(pcx_fd,&pcx_header,128);
|
|
if (result<0) {
|
|
fprintf(stderr,"ERROR opening header of file %s\n",filename);
|
|
}
|
|
|
|
xmin=(pcx_header[5]<<8)+pcx_header[4];
|
|
ymin=(pcx_header[7]<<8)+pcx_header[6];
|
|
|
|
xmax=(pcx_header[9]<<8)+pcx_header[8];
|
|
ymax=(pcx_header[11]<<8)+pcx_header[10];
|
|
|
|
xsize=((xmax-xmin)+1);
|
|
ysize=((ymax-ymin)+1);
|
|
|
|
x=0;
|
|
|
|
while (x<xsize*ysize) {
|
|
|
|
/* read a byte */
|
|
result=read(pcx_fd,&temp_byte,1);
|
|
|
|
/* if > 0xc0, then it's a RLE byte */
|
|
if (0xc0 == (temp_byte&0xc0)) {
|
|
numacross=temp_byte&0x3f;
|
|
result=read(pcx_fd,&temp_byte,1);
|
|
for(i=0;i<numacross;i++) {
|
|
*pointer=temp_byte;
|
|
pointer++;
|
|
x++;
|
|
}
|
|
}
|
|
else {
|
|
*pointer=temp_byte;
|
|
pointer++;
|
|
x++;
|
|
}
|
|
}
|
|
|
|
/*Load Palette*/
|
|
|
|
result=lseek(pcx_fd,-769,SEEK_END);
|
|
|
|
result=read(pcx_fd,&temp_byte,1);
|
|
if (temp_byte!=12) {
|
|
fprintf(stderr,"Error! No palette found!\n");
|
|
return -1;
|
|
}
|
|
|
|
for(i=0;i<255;i++) {
|
|
result=read(pcx_fd,&temp_byte,1);
|
|
r=temp_byte;
|
|
result=read(pcx_fd,&temp_byte,1);
|
|
g=temp_byte;
|
|
result=read(pcx_fd,&temp_byte,1);
|
|
b=temp_byte;
|
|
|
|
#if 0
|
|
int colors[8]={ 0, /* black 0 */
|
|
1, /* purple */
|
|
2, /* green */
|
|
3, /* white 0 */
|
|
0, /* black 1 */
|
|
1, /* blue */
|
|
2, /* orange */
|
|
3, /* white */
|
|
};
|
|
#endif
|
|
|
|
if ((r==0x00) && (g==0x00) && (b==0x00)) colors[i]=0; /* black */
|
|
else
|
|
if ((r==0xff) && (g==0xff) && (b==0xff)) colors[i]=3; /* white */
|
|
else
|
|
if ((r==0x1b) && (g==0x9a) && (b==0xfe)) colors[i]=0x81; /* blue */
|
|
else
|
|
if ((r==0xe4) && (g==0x34) && (b==0xfe)) colors[i]=0x41; /* purple */
|
|
else
|
|
if ((r==0xcd) && (g==0x5b) && (b==0x1)) colors[i]=0x82; /* orange */
|
|
else
|
|
if ((r==0x1b) && (g==0xcb) && (b==0x1)) colors[i]=0x42; /* green */
|
|
else fprintf(stderr,"Unknown color %i %x %x %x\n",i,r,g,b);
|
|
|
|
// printf("%i: 0x%x %x %x\n",i,r,g,b);
|
|
|
|
}
|
|
|
|
close(pcx_fd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
static int make_bw_image(unsigned char *in_framebuffer,
|
|
unsigned char *out_framebuffer,
|
|
int xsize, int ysize) {
|
|
|
|
short fourteen_bits;
|
|
|
|
int i,yoffset=0;
|
|
int y,x;
|
|
unsigned char byte1,byte2;
|
|
|
|
int page,block,leaf;
|
|
|
|
unsigned char *pcx,*hgr;
|
|
|
|
pcx=in_framebuffer;
|
|
hgr=out_framebuffer;
|
|
|
|
for(y=0;y<ysize;y++) {
|
|
for(x=0;x<20;x++) {
|
|
|
|
fourteen_bits=0;
|
|
|
|
for(i=0;i<14;i++) {
|
|
fourteen_bits|= ((colors[(*pcx)&0x7]&0x1)<<i);
|
|
pcx++;
|
|
}
|
|
byte1=(fourteen_bits&0x7f)|(0<<7);
|
|
byte2=((fourteen_bits>>7)&0x7f)|(0<<7);
|
|
|
|
page=(y%8);
|
|
block=((y/8)%8);
|
|
leaf=(y/64);
|
|
|
|
yoffset=(page*1024) + (block*128) + (leaf*40);
|
|
|
|
// printf("%d %d = %x %x %x\n",x,y,fourteen_bits,yoffset,
|
|
// yoffset+(x*2));
|
|
|
|
hgr=out_framebuffer+yoffset+(x*2);
|
|
|
|
*hgr=byte1;
|
|
*(hgr+1)=byte2;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int make_color_image(unsigned char *in_framebuffer,
|
|
unsigned char *out_framebuffer,
|
|
int xsize, int ysize) {
|
|
|
|
short fourteen_bits;
|
|
|
|
int i,pal[2],yoffset=0;
|
|
int y,x;
|
|
unsigned char byte1,byte2;
|
|
|
|
int page,block,leaf;
|
|
unsigned char *pcx,*hgr;
|
|
|
|
#if 0
|
|
unsigned char *pointer=in_framebuffer;
|
|
|
|
for(y=0;y<ysize;y++) {
|
|
for(x=0;x<xsize;x++) {
|
|
printf("%1x",*pointer);
|
|
pointer++;
|
|
}
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
|
|
pcx=in_framebuffer;
|
|
hgr=out_framebuffer;
|
|
|
|
for(y=0;y<ysize;y++) {
|
|
for(x=0;x<20;x++) {
|
|
|
|
fourteen_bits=0;
|
|
pal[0]=0; pal[1]=0;
|
|
|
|
for(i=0;i<7;i++) {
|
|
fourteen_bits|= ((colors[(*pcx)&0x7]&0x3)<<(i*2));
|
|
|
|
/* choose which palette */
|
|
/* can't have colors 1/2 in same run as 4/5 */
|
|
/* If our graphic does, we vote for which to */
|
|
/* Use based on which occurs more */
|
|
|
|
/* if black or white, no change */
|
|
/* if low, 1-0 = add 1 */
|
|
/* if high, 0-1 = minus 1 */
|
|
pal[i/4]+= (colors[*pcx]&0x80) -
|
|
(colors[*pcx]&0x40);
|
|
pcx++;
|
|
}
|
|
if (pal[0]==0) pal[0]=DEFAULT_BLACK;
|
|
if (pal[1]==0) pal[1]=DEFAULT_BLACK;
|
|
|
|
byte1=(fourteen_bits&0x7f)|((pal[0]>0)<<7);
|
|
byte2=((fourteen_bits>>7)&0x7f)|((pal[1]>0)<<7);
|
|
|
|
page=(y%8);
|
|
block=((y/8)%8);
|
|
leaf=(y/64);
|
|
|
|
yoffset=(page*1024) + (block*128) + (leaf*40);
|
|
|
|
// printf("%d %d = %x %x %x\n",x,y,fourteen_bits,yoffset,
|
|
// yoffset+(x*2));
|
|
|
|
hgr=out_framebuffer+yoffset+(x*2);
|
|
|
|
*hgr=byte1;
|
|
*(hgr+1)=byte2;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void print_help(char *name,int version) {
|
|
|
|
printf("\npcx2hgr version %s\n",VERSION);
|
|
|
|
if (version) exit(1);
|
|
|
|
printf("\nUsage: %s [-r] [-s] PCXFILE\n\n",name);
|
|
printf("\t[-r] raw, don't prepend with BLOAD addr/size\n");
|
|
printf("\t[-s] short, leave off bottom text area\n");
|
|
printf("\n");
|
|
|
|
exit(1);
|
|
}
|
|
|
|
|
|
int main(int argc, char **argv) {
|
|
|
|
int xsize=0,ysize=0,type;
|
|
unsigned char *in_framebuffer;
|
|
unsigned char *out_framebuffer;
|
|
int raw=0;
|
|
int c;
|
|
|
|
char *filename;
|
|
|
|
/* Parse command line arguments */
|
|
|
|
while ( (c=getopt(argc, argv, "hvr") ) != -1) {
|
|
|
|
switch(c) {
|
|
|
|
case 'h':
|
|
print_help(argv[0],0);
|
|
break;
|
|
case 'v':
|
|
print_help(argv[0],1);
|
|
break;
|
|
case 'r':
|
|
raw=1;
|
|
break;
|
|
default:
|
|
print_help(argv[0],0);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (optind>=argc) {
|
|
printf("ERROR: Was expecting filename!\n");
|
|
exit(1);
|
|
}
|
|
|
|
filename=strdup(argv[optind]);
|
|
|
|
vmwGetPCXInfo(filename,&xsize,&ysize,&type);
|
|
|
|
in_framebuffer=calloc(xsize*ysize,sizeof(unsigned char));
|
|
if (in_framebuffer==NULL) {
|
|
fprintf(stderr,"Error allocating memory!\n");
|
|
return -1;
|
|
}
|
|
|
|
vmwLoadPCX(filename,in_framebuffer);
|
|
|
|
out_framebuffer=calloc(8192,sizeof(unsigned char));
|
|
if (out_framebuffer==NULL) {
|
|
fprintf(stderr,"Error allocating memory!\n");
|
|
return -1;
|
|
}
|
|
|
|
if ((ysize==160) || (ysize=192)) {
|
|
/* HGR or HGR2 */
|
|
}
|
|
else {
|
|
fprintf(stderr,"Warning, possibly truncating due to ysize: %d\n",ysize);
|
|
}
|
|
|
|
if (xsize==140) {
|
|
make_color_image(in_framebuffer,out_framebuffer,xsize,ysize);
|
|
}
|
|
else if (xsize==280) {
|
|
make_bw_image(in_framebuffer,out_framebuffer,xsize,ysize);
|
|
}
|
|
else {
|
|
fprintf(stderr,"Error! PCX file wrong xsize %d\n",xsize);
|
|
}
|
|
|
|
|
|
/* Last 8 bytes are ignored anyway; by not saving them we can fit */
|
|
/* in 33 disk sectors rather than 34 */
|
|
int file_size=8184;
|
|
|
|
if (!raw) {
|
|
unsigned char header[4];
|
|
|
|
/* assume HGR page 1 */
|
|
int offset=8192;
|
|
|
|
header[0]=offset&0xff;
|
|
header[1]=(offset>>8)&0xff;
|
|
header[2]=file_size&0xff;
|
|
header[3]=(file_size>>8)&0xff;
|
|
|
|
fwrite(header,sizeof(unsigned char),4,stdout);
|
|
}
|
|
|
|
/* Don't need the last 8 bytes; makes it fit in one fewer disk sectors */
|
|
fwrite(out_framebuffer,sizeof(unsigned char),file_size,stdout);
|
|
|
|
free(out_framebuffer);
|
|
free(in_framebuffer);
|
|
|
|
return 0;
|
|
|
|
}
|