1 |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
2 |
|
3 |
#ifndef lint |
4 |
static char SCCSid[] = "$SunId$ SGI"; |
5 |
#endif |
6 |
|
7 |
/* |
8 |
* Radiance picture to PostScript file translator -- one way! |
9 |
*/ |
10 |
|
11 |
#include <stdio.h> |
12 |
#include <math.h> |
13 |
#include <ctype.h> |
14 |
#ifdef MSDOS |
15 |
#include <fcntl.h> |
16 |
#endif |
17 |
#include "color.h" |
18 |
|
19 |
#define UPPER(c) ((c)&~0x20) /* ASCII trick */ |
20 |
|
21 |
#define CODE6GAM 1.47 /* gamma for 6-bit codes */ |
22 |
#define DEFDGAM 1.0 /* default device gamma */ |
23 |
|
24 |
#define GRY -1 /* artificial index for grey */ |
25 |
|
26 |
#define DEFMARG 0.5 /* default margin (inches) */ |
27 |
#define DEFWIDTH 8.5 /* default page width */ |
28 |
#define DEFHEIGHT 11 /* default page height */ |
29 |
#define HMARGIN (hmarg*72) /* horizontal margin */ |
30 |
#define VMARGIN (vmarg*72) /* vertical margin */ |
31 |
#define PWIDTH (width*72-2*HMARGIN) /* width of device */ |
32 |
#define PHEIGHT (height*72-2*VMARGIN) /* height of device */ |
33 |
|
34 |
#define RUNCHR '*' /* character to start rle */ |
35 |
#define MINRUN 4 /* minimum run-length */ |
36 |
#define RSTRT '!' /* character for MINRUN */ |
37 |
#define MAXRUN (MINRUN+'~'-RSTRT) /* maximum run-length */ |
38 |
|
39 |
char code[] = /* 6-bit code lookup table */ |
40 |
"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ@+"; |
41 |
|
42 |
int wrongformat = 0; /* input in wrong format? */ |
43 |
double pixaspect = 1.0; /* pixel aspect ratio */ |
44 |
|
45 |
double devgam = DEFDGAM; /* device gamma response */ |
46 |
double hmarg = DEFMARG, |
47 |
vmarg = DEFMARG; /* horizontal and vertical margins */ |
48 |
double width = DEFWIDTH, |
49 |
height = DEFHEIGHT; /* default paper width and height */ |
50 |
int docolor = 0; /* produce color image? */ |
51 |
int bradj = 0; /* brightness adjustment */ |
52 |
int ncopies = 1; /* number of copies */ |
53 |
|
54 |
extern int Aputprim(), Bputprim(), Cputprim(); |
55 |
|
56 |
int (*putprim)() = Aputprim; /* function for writing scanline */ |
57 |
|
58 |
char *progname; |
59 |
|
60 |
int xmax, ymax; |
61 |
|
62 |
extern char *malloc(); |
63 |
extern double unit2inch(); |
64 |
|
65 |
|
66 |
headline(s) /* check header line */ |
67 |
char *s; |
68 |
{ |
69 |
char fmt[32]; |
70 |
|
71 |
if (isformat(s)) { |
72 |
formatval(fmt, s); |
73 |
wrongformat = strcmp(fmt, COLRFMT); |
74 |
} else if (isaspect(s)) |
75 |
pixaspect *= aspectval(s); |
76 |
} |
77 |
|
78 |
|
79 |
main(argc, argv) |
80 |
int argc; |
81 |
char *argv[]; |
82 |
{ |
83 |
int i; |
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double d; |
85 |
|
86 |
progname = argv[0]; |
87 |
|
88 |
for (i = 1; i < argc; i++) |
89 |
if (argv[i][0] == '-') |
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switch (argv[i][1]) { |
91 |
case 'b': /* produce b&w PostScript */ |
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docolor = 0; |
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break; |
94 |
case 'c': /* produce color PostScript */ |
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docolor = 1; |
96 |
break; |
97 |
case 'A': /* standard ASCII encoding */ |
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putprim = Aputprim; |
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break; |
100 |
case 'B': /* standard binary encoding */ |
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putprim = Bputprim; |
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break; |
103 |
case 'C': /* compressed ASCII encoding */ |
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putprim = Cputprim; |
105 |
break; |
106 |
case 'g': /* device gamma adjustment */ |
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devgam = atof(argv[++i]); |
108 |
break; |
109 |
case 'p': /* paper size */ |
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parsepaper(argv[++i]); |
111 |
break; |
112 |
case 'm': /* margin */ |
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d = atof(argv[i+1]); |
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d *= unit2inch(argv[i+1]); |
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switch (argv[i][2]) { |
116 |
case '\0': |
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hmarg = vmarg = d; |
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break; |
119 |
case 'h': |
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hmarg = d; |
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break; |
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case 'v': |
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vmarg = d; |
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break; |
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default: |
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goto userr; |
127 |
} |
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i++; |
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break; |
130 |
case 'e': /* exposure adjustment */ |
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
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goto userr; |
133 |
bradj = atoi(argv[++i]); |
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break; |
135 |
case 'n': /* number of copies */ |
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ncopies = atoi(argv[++i]); |
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break; |
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default: |
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goto userr; |
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} |
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else |
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break; |
143 |
|
144 |
if (i < argc-2) |
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goto userr; |
146 |
if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
147 |
fprintf(stderr, "%s: can't open input \"%s\"\n", |
148 |
progname, argv[i]); |
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exit(1); |
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} |
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if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
152 |
fprintf(stderr, "%s: can't open output \"%s\"\n", |
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progname, argv[i+1]); |
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exit(1); |
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} |
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#ifdef MSDOS |
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setmode(fileno(stdin), O_BINARY); |
158 |
#endif |
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/* get our header */ |
160 |
getheader(stdin, headline, NULL); |
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if (wrongformat || fgetresolu(&xmax, &ymax, stdin) < 0) |
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quiterr("bad picture format"); |
163 |
/* gamma compression */ |
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if (putprim == Cputprim) |
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setcolrgam(CODE6GAM/devgam); |
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else if (devgam != 1.) |
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setcolrgam(1./devgam); |
168 |
/* write header */ |
169 |
PSheader(i <= argc-1 ? argv[i] : "<stdin>"); |
170 |
/* convert file */ |
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ra2ps(); |
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/* write trailer */ |
173 |
PStrailer(); |
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exit(0); |
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userr: |
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fprintf(stderr, |
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"Usage: %s [-b|c][-A|B|C][-e +/-stops][-p paper][-m[h|v] margin][-g gamma] [input [output]]\n", |
178 |
progname); |
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exit(1); |
180 |
} |
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|
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|
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double |
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unit2inch(s) /* determine unit */ |
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register char *s; |
186 |
{ |
187 |
static struct unit {char n; float f} u[] = { |
188 |
'i', 1., |
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'm', 1./25.4, |
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'c', 1./2.54, |
191 |
'\0' }; |
192 |
register struct unit *up; |
193 |
|
194 |
while (*s && !isalpha(*s)) |
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s++; |
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for (up = u; up->n; up++) |
197 |
if (up->n == *s) |
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return(up->f); |
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return(1.); |
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} |
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|
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|
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int |
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matchid(name, id) /* see if name matches id (case insensitive) */ |
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char *name; |
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register char *id; |
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{ |
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register char *s = name; |
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|
210 |
while (*s) { |
211 |
if (isalpha(*s)) { |
212 |
if (!isalpha(*id) || UPPER(*s) != UPPER(*id)) |
213 |
return(0); |
214 |
} else if (*s != *id) |
215 |
return(0); |
216 |
s++; id++; |
217 |
} |
218 |
return(!*id || s-name >= 3); /* substrings >= 3 chars OK */ |
219 |
} |
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|
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|
222 |
parsepaper(ps) /* determine paper size from name */ |
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char *ps; |
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{ |
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static struct psize {char n[12]; float w,h;} p[] = { |
226 |
"letter", 8.5, 11., |
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"legal", 8.5, 14., |
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"executive", 7.25, 10.5, |
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"envelope", 4.12, 9.5, |
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"monarch", 3.87, 7.5, |
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"tabloid", 11., 17., |
232 |
"A3", 11.69, 16.54, |
233 |
"A4", 8.27, 11.69, |
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"A5", 6.00, 8.27, |
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"A6", 4.13, 6.00, |
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"B4", 10.12, 14.33, |
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"B5", 7.17, 10.12, |
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"DL", 4.33, 8.66, |
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"C5", 6.38, 9.01, |
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"C6", 4.49, 6.38, |
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"hagaki", 3.94, 5.83, |
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"" }; |
243 |
register struct psize *pp; |
244 |
register char *s = ps; |
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double d; |
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|
247 |
if (isdigit(*s)) { /* check for WWxHH specification */ |
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width = atof(s); |
249 |
while (*s && !isalpha(*s)) |
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s++; |
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d = unit2inch(s); |
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height = atof(++s); |
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width *= d; |
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height *= d; |
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if (width >= 1. & height >= 1.) |
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return; |
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} else /* check for match to standard size */ |
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for (pp = p; pp->n[0]; pp++) |
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if (matchid(s, pp->n)) { |
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width = pp->w; |
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height = pp->h; |
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return; |
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} |
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fprintf(stderr, "%s: unknown paper size \"%s\" -- known sizes:\n", |
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progname, ps); |
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fprintf(stderr, "_Name________Width_Height_(inches)\n"); |
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for (pp = p; pp->n[0]; pp++) |
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fprintf(stderr, "%-11s %5.2f %5.2f\n", pp->n, pp->w, pp->h); |
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exit(1); |
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} |
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|
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|
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quiterr(err) /* print message and exit */ |
274 |
char *err; |
275 |
{ |
276 |
if (err != NULL) { |
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fprintf(stderr, "%s: %s\n", progname, err); |
278 |
exit(1); |
279 |
} |
280 |
exit(0); |
281 |
} |
282 |
|
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|
284 |
PSheader(name) /* print PostScript header */ |
285 |
char *name; |
286 |
{ |
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char *rstr; |
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int landscape = 0; |
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double pwidth, pheight; |
290 |
double iwidth, iheight; |
291 |
/* EPS comments */ |
292 |
puts("%!PS-Adobe-2.0 EPSF-2.0"); |
293 |
printf("%%%%Title: %s\n", name); |
294 |
printf("%%%%Creator: %s = %s\n", progname, SCCSid); |
295 |
printf("%%%%Pages: %d\n", ncopies); |
296 |
if (landscape = xmax > pixaspect*ymax) |
297 |
puts("%%Orientation: Landscape"); |
298 |
else |
299 |
puts("%%Orientation: Portrait"); |
300 |
if (PWIDTH > PHEIGHT ^ landscape) { |
301 |
pwidth = PHEIGHT; |
302 |
pheight = PWIDTH; |
303 |
} else { |
304 |
pwidth = PWIDTH; |
305 |
pheight = PHEIGHT; |
306 |
} |
307 |
if (pheight/pwidth > pixaspect*ymax/xmax) { |
308 |
iwidth = pwidth; |
309 |
iheight = pwidth*pixaspect*ymax/xmax; |
310 |
} else { |
311 |
iheight = pheight; |
312 |
iwidth = pheight*xmax/(pixaspect*ymax); |
313 |
} |
314 |
if (pwidth == PHEIGHT) |
315 |
printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", |
316 |
HMARGIN+(pheight-iheight)*.5, |
317 |
VMARGIN+(pwidth-iwidth)*.5, |
318 |
HMARGIN+(pheight-iheight)*.5+iheight, |
319 |
VMARGIN+(pwidth-iwidth)*.5+iwidth); |
320 |
else |
321 |
printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", |
322 |
HMARGIN+(pwidth-iwidth)*.5, |
323 |
VMARGIN+(pheight-iheight)*.5, |
324 |
HMARGIN+(pwidth-iwidth)*.5+iwidth, |
325 |
VMARGIN+(pheight-iheight)*.5+iheight); |
326 |
puts("%%EndComments"); |
327 |
puts("gsave save"); |
328 |
puts("17 dict begin"); |
329 |
/* define image reader */ |
330 |
if (docolor) { |
331 |
printf("/redline %d string def\n", xmax); |
332 |
printf("/grnline %d string def\n", xmax); |
333 |
printf("/bluline %d string def\n", xmax); |
334 |
} else |
335 |
printf("/gryline %d string def\n", xmax); |
336 |
/* use compressed encoding? */ |
337 |
if (putprim == Cputprim) |
338 |
PSprocdef("read6bitRLE"); |
339 |
/* set up transformation matrix */ |
340 |
printf("%f %f translate\n", HMARGIN, VMARGIN); |
341 |
if (pwidth == PHEIGHT) { |
342 |
printf("%f 0 translate\n", PWIDTH); |
343 |
puts("90 rotate"); |
344 |
} |
345 |
printf("%f %f translate\n", (pwidth-iwidth)*.5, (pheight-iheight)*.5); |
346 |
printf("%f %f scale\n", iwidth, iheight); |
347 |
puts("%%EndProlog"); |
348 |
/* start image procedure */ |
349 |
printf("%d %d 8 [%d 0 0 %d 0 %d]\n", xmax, ymax, xmax, -ymax, ymax); |
350 |
if (putprim == Cputprim) { |
351 |
if (docolor) { |
352 |
puts("{redline read6bitRLE}"); |
353 |
puts("{grnline read6bitRLE}"); |
354 |
puts("{bluline read6bitRLE}"); |
355 |
puts("true 3 colorimage"); |
356 |
} else |
357 |
puts("{gryline read6bitRLE} image"); |
358 |
} else { |
359 |
rstr = putprim==Aputprim ? "readhexstring" : "readstring"; |
360 |
if (docolor) { |
361 |
printf("{currentfile redline %s pop}\n", rstr); |
362 |
printf("{currentfile grnline %s pop}\n", rstr); |
363 |
printf("{currentfile bluline %s pop}\n", rstr); |
364 |
puts("true 3 colorimage"); |
365 |
} else |
366 |
printf("{currentfile gryline %s pop} image\n", rstr); |
367 |
} |
368 |
} |
369 |
|
370 |
|
371 |
PStrailer() /* print PostScript trailer */ |
372 |
{ |
373 |
puts("%%Trailer"); |
374 |
if (ncopies > 1) |
375 |
printf("/#copies %d def\n", ncopies); |
376 |
puts("showpage"); |
377 |
puts("end"); |
378 |
puts("restore grestore"); |
379 |
puts("%%EOF"); |
380 |
} |
381 |
|
382 |
|
383 |
PSprocdef(nam) /* define PS procedure to read image */ |
384 |
char *nam; |
385 |
{ |
386 |
short itab[128]; |
387 |
register int i; |
388 |
/* assign code values */ |
389 |
for (i = 0; i < 128; i++) /* clear */ |
390 |
itab[i] = -1; |
391 |
for (i = 1; i < 63; i++) /* assign greys */ |
392 |
itab[code[i]] = 256.0*pow((i+.5)/64.0, CODE6GAM); |
393 |
itab[code[0]] = 0; /* black is black */ |
394 |
itab[code[63]] = 255; /* and white is white */ |
395 |
printf("/codetab ["); |
396 |
for (i = 0; i < 128; i++) { |
397 |
if (!(i & 0xf)) |
398 |
putchar('\n'); |
399 |
printf(" %3d", itab[i]); |
400 |
} |
401 |
printf("\n] def\n"); |
402 |
printf("/nrept 0 def\n"); |
403 |
printf("/readbyte { currentfile read not {stop} if } bind def\n"); |
404 |
printf("/decode { codetab exch get } bind def\n"); |
405 |
printf("/%s {\t%% scanbuffer\n", nam); |
406 |
printf("\t/scanline exch def\n"); |
407 |
printf("\t{ 0 1 %d { scanline exch\n", xmax-1); |
408 |
printf("\t\tnrept 0 le\n"); |
409 |
printf("\t\t\t{ { readbyte dup %d eq\n", RUNCHR); |
410 |
printf("\t\t\t\t\t{ pop /nrept readbyte %d sub def\n", RSTRT-MINRUN+1); |
411 |
printf("\t\t\t\t\t\t/reptv readbyte decode def\n"); |
412 |
printf("\t\t\t\t\t\treptv exit }\n"); |
413 |
printf("\t\t\t\t\t{ decode dup 0 lt {pop} {exit} ifelse }\n"); |
414 |
printf("\t\t\t\tifelse } loop }\n"); |
415 |
printf("\t\t\t{ /nrept nrept 1 sub def reptv }\n"); |
416 |
printf("\t\tifelse put\n"); |
417 |
printf("\t\t} for\n"); |
418 |
printf("\t} stopped {pop pop 0 string} {scanline} ifelse\n"); |
419 |
printf("} bind def\n"); |
420 |
} |
421 |
|
422 |
|
423 |
ra2ps() /* convert Radiance scanlines to 6-bit */ |
424 |
{ |
425 |
register COLR *scanin; |
426 |
int y; |
427 |
/* allocate scanline */ |
428 |
scanin = (COLR *)malloc(xmax*sizeof(COLR)); |
429 |
if (scanin == NULL) |
430 |
quiterr("out of memory in ra2ps"); |
431 |
/* convert image */ |
432 |
for (y = ymax-1; y >= 0; y--) { |
433 |
if (freadcolrs(scanin, xmax, stdin) < 0) |
434 |
quiterr("error reading Radiance picture"); |
435 |
if (putprim == Cputprim || devgam != 1.) { |
436 |
if (bradj) /* adjust exposure */ |
437 |
shiftcolrs(scanin, xmax, bradj); |
438 |
colrs_gambs(scanin, xmax); /* gamma compression */ |
439 |
} else |
440 |
normcolrs(scanin, xmax, bradj); |
441 |
if (docolor) { |
442 |
(*putprim)(scanin, RED); |
443 |
(*putprim)(scanin, GRN); |
444 |
(*putprim)(scanin, BLU); |
445 |
} else |
446 |
(*putprim)(scanin, GRY); |
447 |
if (ferror(stdout)) |
448 |
quiterr("error writing PostScript file"); |
449 |
} |
450 |
putchar('\n'); |
451 |
/* free scanline */ |
452 |
free((char *)scanin); |
453 |
} |
454 |
|
455 |
|
456 |
int |
457 |
Aputprim(scn, pri) /* put out hex ASCII primary from scanline */ |
458 |
COLR *scn; |
459 |
int pri; |
460 |
{ |
461 |
static char hexdigit[] = "0123456789ABCDEF"; |
462 |
static int col = 0; |
463 |
register int x, c; |
464 |
|
465 |
for (x = 0; x < xmax; x++) { |
466 |
if (pri == GRY) |
467 |
c = normbright(scn[x]); |
468 |
else |
469 |
c = scn[x][pri]; |
470 |
if (c > 255) c = 255; |
471 |
putchar(hexdigit[c>>4]); |
472 |
putchar(hexdigit[c&0xf]); |
473 |
if ((col += 2) >= 72) { |
474 |
putchar('\n'); |
475 |
col = 0; |
476 |
} |
477 |
} |
478 |
} |
479 |
|
480 |
|
481 |
int |
482 |
Bputprim(scn, pri) /* put out binary primary from scanline */ |
483 |
COLR *scn; |
484 |
int pri; |
485 |
{ |
486 |
register int x, c; |
487 |
|
488 |
for (x = 0; x < xmax; x++) { |
489 |
if (pri == GRY) |
490 |
c = normbright(scn[x]); |
491 |
else |
492 |
c = scn[x][pri]; |
493 |
if (c > 255) c = 255; |
494 |
putchar(c); |
495 |
} |
496 |
} |
497 |
|
498 |
|
499 |
int |
500 |
Cputprim(scn, pri) /* put out compressed primary from scanline */ |
501 |
COLR *scn; |
502 |
int pri; |
503 |
{ |
504 |
register int c; |
505 |
register int x; |
506 |
int lastc, cnt; |
507 |
|
508 |
lastc = -1; cnt = 0; |
509 |
for (x = 0; x < xmax; x++) { |
510 |
if (pri == GRY) |
511 |
c = normbright(scn[x]) + 2; |
512 |
else |
513 |
c = scn[x][pri] + 2; |
514 |
if (c > 255) c = 255; |
515 |
c = code[c>>2]; |
516 |
if (c == lastc && cnt < MAXRUN) |
517 |
cnt++; |
518 |
else { |
519 |
putrle(cnt, lastc); |
520 |
lastc = c; |
521 |
cnt = 1; |
522 |
} |
523 |
} |
524 |
putrle(cnt, lastc); |
525 |
} |
526 |
|
527 |
|
528 |
putrle(cnt, cod) /* put out cnt of cod */ |
529 |
register int cnt, cod; |
530 |
{ |
531 |
static int col = 0; |
532 |
|
533 |
if (cnt >= MINRUN) { |
534 |
col += 3; |
535 |
putchar(RUNCHR); |
536 |
putchar(RSTRT-MINRUN+cnt); |
537 |
putchar(cod); |
538 |
} else { |
539 |
col += cnt; |
540 |
while (cnt-- > 0) |
541 |
putchar(cod); |
542 |
} |
543 |
if (col >= 72) { |
544 |
putchar('\n'); |
545 |
col = 0; |
546 |
} |
547 |
} |