mirror of
https://github.com/xcat2/xNBA.git
synced 2024-12-25 12:41:34 +00:00
236 lines
6.2 KiB
C
236 lines
6.2 KiB
C
#include <getopt.h>
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
|
||
static int palette[8][3] = {
|
||
/* black, red, green, yellow, */
|
||
{ 0, 0, 0},{255, 0, 0},{ 0,255, 0},{255,255, 0},
|
||
{ 0, 0,255},{255, 0,255},{ 0,255,255},{255,255,255}};
|
||
/* blue, magenta, cyan, white */
|
||
|
||
static struct trans {
|
||
struct trans *next;
|
||
int idx,r,g,b;
|
||
} *trans = NULL;
|
||
|
||
static int skipcomment(FILE *fp)
|
||
{
|
||
int ch;
|
||
|
||
for (;;) {
|
||
ch = getc(fp);
|
||
if (ch != '#')
|
||
return(ch);
|
||
while (ch != '\n' && ch != EOF)
|
||
ch = getc(fp); }
|
||
}
|
||
|
||
static int readentry(FILE *fp,int format,int depth)
|
||
{
|
||
int ch,i = 0;
|
||
|
||
if (format == '3') {
|
||
while ((ch = getc(fp)) == ' ' || ch == '\t' || ch == '\r' || ch == '\n');
|
||
if (ch < '0' || ch > '9') {
|
||
error:
|
||
fprintf(stderr,"Format error in input file\n");
|
||
exit(1); }
|
||
for (; ch >= '0' && ch <= '9'; ch = getc(fp))
|
||
i = 10*i + ch - '0'; }
|
||
else {
|
||
if ((i = getc(fp)) > depth || i < 0)
|
||
goto error; }
|
||
return((i*256)/(depth+1));
|
||
}
|
||
|
||
static void packpixel(char *data,int c)
|
||
{
|
||
int i = 0, n = 0;
|
||
|
||
while (c--) {
|
||
i = (i << 3) | (*data++ & 0x7);
|
||
if ((n += 3) >= 8)
|
||
putchar((i >> (n -= 8)) & 0xFF); }
|
||
if (n)
|
||
putchar(i << (8 - n));
|
||
return;
|
||
}
|
||
|
||
static int dg(int i)
|
||
{
|
||
int d;
|
||
|
||
for (d = 0; i; d++, i /= 10);
|
||
return(d);
|
||
}
|
||
|
||
static char *i2s(char *buf,int i)
|
||
{
|
||
/* if (!i)
|
||
*buf = '\000';
|
||
else*/
|
||
sprintf(buf,"%d",i);
|
||
return(buf);
|
||
}
|
||
|
||
static void flushdata(int x,int y,int c,char *data)
|
||
{
|
||
char b1[10],b2[10],b3[10],b4[10];
|
||
int i,j,rle,v;
|
||
|
||
for (i = j = v = 0; i < c; ) {
|
||
for (rle = 0; i+rle < c && data[i] == data[i+rle]; rle++);
|
||
if (rle > (i != j ? (v ? 4 : 6) : 0) +
|
||
((v || (i != j)) ? 4+dg(rle)+dg(data[i])
|
||
: 6+dg(x+i)+dg(y)+dg(rle)+dg(data[i]))) {
|
||
if (i != j) {
|
||
if (v)
|
||
printf("[%s-",i2s(b1,i-j));
|
||
else
|
||
printf("[%s;%s;%s-",i2s(b1,x+j),i2s(b2,y),i2s(b3,i-j));
|
||
packpixel(data+j,i-j); }
|
||
if (v++ || (i != j))
|
||
printf("[%s;%s+",i2s(b1,rle),i2s(b2,data[i]));
|
||
else
|
||
printf("[%s;%s;%s;%s+",i2s(b1,x+i),i2s(b2,y),
|
||
i2s(b3,rle),i2s(b4,data[i]));
|
||
j = i += rle; }
|
||
else
|
||
i++; }
|
||
if (j != c) {
|
||
if (v)
|
||
printf("[%s-",i2s(b1,c-j));
|
||
else
|
||
printf("[%s;%s;%s-",i2s(b1,x+j),i2s(b2,y),i2s(b3,c-j));
|
||
packpixel(data+j,c-j); }
|
||
return;
|
||
}
|
||
|
||
int main(int argc,char *argv[])
|
||
{
|
||
extern int optind;
|
||
extern char *optarg;
|
||
FILE *infile = NULL;
|
||
int ch,i,j,dist,idx;
|
||
int format,width,height,depth;
|
||
int bg = 0,bgred = 0,bggreen = 0,bgblue = 0;
|
||
int xoffset = 0,yoffset = 0;
|
||
int w,h,r,g,b,c;
|
||
struct trans *tp;
|
||
char *buf;
|
||
|
||
while ((i = getopt(argc,argv,"b:t:x:y:")) >= 0) switch(i) {
|
||
case 'b':
|
||
bg++;
|
||
for (i = bgred = 0; optarg[i] >= '0' && optarg[i] <= '9';
|
||
bgred = 10*bgred + optarg[i++] - '0');
|
||
if (optarg[i++] != '/')
|
||
goto usage;
|
||
for (bggreen = 0; optarg[i] >= '0' && optarg[i] <= '9';
|
||
bggreen = 10*bggreen + optarg[i++] - '0');
|
||
if (optarg[i++] != '/')
|
||
goto usage;
|
||
for (bgblue = 0; optarg[i] >= '0' && optarg[i] <= '9';
|
||
bgblue = 10*bgblue + optarg[i++] - '0');
|
||
if (optarg[i])
|
||
goto usage;
|
||
break;
|
||
case 't':
|
||
if ((tp = malloc(sizeof(struct trans))) == NULL)
|
||
goto usage;
|
||
for (i = tp->r = 0; optarg[i] >= '0' && optarg[i] <= '9';
|
||
tp->r = 10*tp->r + optarg[i++] - '0');
|
||
if (optarg[i++] != '/')
|
||
goto usage;
|
||
for (tp->g = 0; optarg[i] >= '0' && optarg[i] <= '9';
|
||
tp->g = 10*tp->g + optarg[i++] - '0');
|
||
if (optarg[i++] != '/')
|
||
goto usage;
|
||
for (tp->b = 0; optarg[i] >= '0' && optarg[i] <= '9';
|
||
tp->b = 10*tp->b + optarg[i++] - '0');
|
||
if (optarg[i++] != ':')
|
||
goto usage;
|
||
if (optarg[i] == '-') {
|
||
j = -1; i++; }
|
||
else j = 1;
|
||
for (tp->idx = 0; optarg[i] >= '0' && optarg[i] <= '9';
|
||
tp->idx = 10*tp->idx + optarg[i++] - '0');
|
||
tp->idx *= j;
|
||
if (tp->idx < -1 || tp->idx >= 8)
|
||
goto usage;
|
||
if (optarg[i])
|
||
goto usage;
|
||
tp->next = trans;
|
||
trans = tp;
|
||
break;
|
||
case 'x':
|
||
for (i = xoffset = 0; optarg[i] >= '0' && optarg[i] <= '9';
|
||
xoffset = 10*xoffset + optarg[i++] - '0');
|
||
if (optarg[i])
|
||
goto usage;
|
||
break;
|
||
case 'y':
|
||
for (i = yoffset = 0; optarg[i] >= '0' && optarg[i] <= '9';
|
||
yoffset = 10*yoffset + optarg[i++] - '0');
|
||
if (optarg[i])
|
||
goto usage;
|
||
break;
|
||
default:
|
||
usage:
|
||
fprintf(stderr,"Usage: %s [-b r/g/b] [-t r/g/b:idx] "
|
||
"[-x offset] [-y offset] [ppmfile]\n",argv[0]);
|
||
exit(1); }
|
||
if (argc-optind == 0)
|
||
infile = stdin;
|
||
else if (argc-optind == 1)
|
||
infile = fopen(argv[optind],"r");
|
||
if (!infile)
|
||
goto usage;
|
||
if ((ch = skipcomment(infile)) != 'P' ||
|
||
((format = getc(infile)) != '3' && format != '6') ||
|
||
((ch = getc(infile)) != '\n' && ch != '\r' && getc(infile) != '\n'))
|
||
goto usage;
|
||
for (width = 0; (ch = skipcomment(infile)) >= '0' && ch <= '9';
|
||
width = 10*width + ch - '0');
|
||
while (ch == ' ') ch = getc(infile);
|
||
for (height = 0; ch >= '0' && ch <= '9'; ch = getc(infile))
|
||
height = 10*height + ch - '0';
|
||
if (ch != '\n' && ch != '\r' && getc(infile) != '\n')
|
||
goto usage;
|
||
for (depth = 0; (ch = skipcomment(infile)) >= '0' && ch <= '9';
|
||
depth = 10*depth + ch - '0');
|
||
if (ch != '\n' && ch != '\r' && getc(infile) != '\n')
|
||
goto usage;
|
||
if (!width || !height || !depth /* || depth > 255 */)
|
||
goto usage;
|
||
if ((buf = malloc(width)) == NULL)
|
||
goto usage;
|
||
for (h = 0; h < height; h++) {
|
||
for (w = c = 0; w < width; w++) {
|
||
r = readentry(infile,format,depth);
|
||
g = readentry(infile,format,depth);
|
||
b = readentry(infile,format,depth);
|
||
idx = 255;
|
||
if (bg && bgred == r &&
|
||
bggreen == g && bgblue == b)
|
||
idx = -1;
|
||
else for (tp = trans; tp; tp = tp->next)
|
||
if (tp->r == r && tp->g == g && tp->b == b) {
|
||
idx = tp->idx;
|
||
break; }
|
||
if (idx == 255)
|
||
for (idx = -1, dist = 3*255*255, i = 8; i--;)
|
||
if ((j = (r-palette[i][0])*(r-palette[i][0]) +
|
||
(g-palette[i][1])*(g-palette[i][1]) +
|
||
(b-palette[i][2])*(b-palette[i][2])) < dist) {
|
||
dist = j; idx = i; }
|
||
if (idx >= 0)
|
||
buf[c++] = idx;
|
||
else if (c) {
|
||
flushdata(w-c+xoffset,h+yoffset,c,buf);
|
||
c = 0; } }
|
||
if (c)
|
||
flushdata(w-c+xoffset,h+yoffset,c,buf); }
|
||
exit(0);
|
||
}
|