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/* Copyright (c) 1992 Regents of the University of California */ |
1 |
> |
/* Copyright (c) 1995 Regents of the University of California */ |
2 |
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|
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ LBL"; |
5 |
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#endif |
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|
7 |
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/* Copyright (c) 1992 Regents of the University of California */ |
8 |
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|
9 |
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#ifndef lint |
10 |
– |
static char SCCSid[] = "$SunId$ LBL"; |
11 |
– |
#endif |
12 |
– |
|
7 |
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/* |
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* Radiance picture to PostScript file translator -- one way! |
9 |
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*/ |
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|
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#include <stdio.h> |
12 |
+ |
#include <math.h> |
13 |
+ |
#ifdef MSDOS |
14 |
+ |
#include <fcntl.h> |
15 |
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#endif |
16 |
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#include "color.h" |
19 |
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#include "random.h" |
17 |
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|
18 |
+ |
#define GAMVAL 1.47 /* gamma value for pixels */ |
19 |
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|
20 |
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#define GRY -1 /* artificial index for grey */ |
21 |
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|
22 |
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#define HMARGIN (.5*72) /* horizontal margin */ |
23 |
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#define VMARGIN (.5*72) /* vertical margin */ |
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#define PWIDTH (8.5*72-2*HMARGIN) /* width of device */ |
25 |
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#define PHEIGHT (11*72-2*VMARGIN) /* height of device */ |
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|
27 |
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#define RUNCHR '*' /* character to start rle */ |
28 |
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#define MINRUN 4 /* minimum run-length */ |
29 |
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#define RSTRT '!' /* character for MINRUN */ |
30 |
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#define MAXRUN (MINRUN+'~'-RSTRT) /* maximum run-length */ |
31 |
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|
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char code[] = /* 6-bit code lookup table */ |
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"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ@+"; |
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|
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int wrongformat = 0; /* input in wrong format? */ |
36 |
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double pixaspect = 1.0; /* pixel aspect ratio */ |
36 |
> |
double pixaspect = 1.0; /* pixel aspect ratio */ |
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|
38 |
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int docolor = 0; /* produce color image? */ |
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int bradj = 0; /* brightness adjustment */ |
40 |
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int ncopies = 1; /* number of copies */ |
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|
42 |
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extern int Aputprim(), Bputprim(), Cputprim(); |
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|
44 |
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int (*putprim)() = Aputprim; /* function for writing scanline */ |
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|
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char *progname; |
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|
48 |
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int xmax, ymax; |
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|
50 |
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extern char *malloc(); |
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|
52 |
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|
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headline(s) /* check header line */ |
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char *s; |
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{ |
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for (i = 1; i < argc; i++) |
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if (argv[i][0] == '-') |
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switch (argv[i][1]) { |
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case 'b': /* produce b&w PostScript */ |
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docolor = 0; |
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break; |
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case 'c': /* produce color PostScript */ |
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docolor = 1; |
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break; |
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case 'A': /* standard ASCII encoding */ |
84 |
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putprim = Aputprim; |
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break; |
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case 'B': /* standard binary encoding */ |
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putprim = Bputprim; |
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break; |
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case 'C': /* compressed ASCII encoding */ |
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putprim = Cputprim; |
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break; |
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case 'e': /* exposure adjustment */ |
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
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goto userr; |
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bradj = atoi(argv[++i]); |
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break; |
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case 'n': /* number of copies */ |
98 |
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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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exit(1); |
112 |
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} |
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if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
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fprintf(stderr, "can't open output \"%s\"\n", |
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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); |
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#endif |
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/* get our header */ |
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getheader(stdin, headline, NULL); |
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if (wrongformat || fgetresolu(&xmax, &ymax, stdin) < 0) |
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quiterr("bad picture format"); |
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/* gamma compression */ |
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if (putprim == Cputprim) |
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setcolrgam(GAMVAL); |
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/* write header */ |
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PSheader(i <= argc-1 ? argv[i] : "<stdin>"); |
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/* convert file */ |
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PStrailer(); |
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exit(0); |
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userr: |
136 |
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fprintf(stderr, "Usage: %s [-e +/-stops] [input [output]]\n", progname); |
136 |
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fprintf(stderr, "Usage: %s [-b|c][-A|B|C][-e +/-stops] [input [output]]\n", |
137 |
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progname); |
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exit(1); |
139 |
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} |
140 |
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|
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PSheader(name) /* print PostScript header */ |
154 |
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char *name; |
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{ |
156 |
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char *rstr; |
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int landscape = 0; |
158 |
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double pwidth, pheight; |
159 |
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|
160 |
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printf("%%!\n"); |
158 |
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double pwidth, pheight; |
159 |
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double iwidth, iheight; |
160 |
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/* EPS comments */ |
161 |
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puts("%!PS-Adobe-2.0 EPSF-2.0"); |
162 |
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printf("%%%%Title: %s\n", name); |
163 |
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printf("%%%%Creator: %s\n", progname); |
164 |
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printf("%%%%Pages: 1\n"); |
163 |
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printf("%%%%Creator: %s = %s\n", progname, SCCSid); |
164 |
> |
printf("%%%%Pages: %d\n", ncopies); |
165 |
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if (landscape = xmax > pixaspect*ymax) |
166 |
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printf("%%%%Landscape\n"); |
166 |
> |
puts("%%Orientation: Landscape"); |
167 |
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else |
168 |
< |
printf("%%%%Portrait\n"); |
128 |
< |
printf("%%%%EndComments\n"); |
129 |
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printf("gsave\n"); |
130 |
< |
printf("64 dict begin\n"); |
131 |
< |
/* set up transformation matrix */ |
132 |
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printf("%f %f translate 1 -1 scale\n", HMARGIN, VMARGIN+PHEIGHT); |
168 |
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puts("%%Orientation: Portrait"); |
169 |
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if (PWIDTH > PHEIGHT ^ landscape) { |
134 |
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printf("0 %f translate\n", PHEIGHT); |
135 |
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printf("90 rotate\n"); |
170 |
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pwidth = PHEIGHT; |
171 |
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pheight = PWIDTH; |
172 |
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} else { |
174 |
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pheight = PHEIGHT; |
175 |
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} |
176 |
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if (pheight/pwidth > pixaspect*ymax/xmax) { |
177 |
< |
printf("%f %f matrix scale\n", pwidth/xmax, |
178 |
< |
pixaspect*pwidth/xmax); |
145 |
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printf("0 %f matrix translate\n", |
146 |
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.5*(pheight-pwidth*pixaspect*ymax/xmax)); |
177 |
> |
iwidth = pwidth; |
178 |
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iheight = pwidth*pixaspect*ymax/xmax; |
179 |
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} else { |
180 |
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printf("%f %f matrix scale\n", pheight/(ymax*pixaspect), |
181 |
< |
pheight/ymax); |
150 |
< |
printf("%f 0 matrix translate\n", |
151 |
< |
.5*(pwidth-pheight*xmax/(ymax*pixaspect))); |
180 |
> |
iheight = pheight; |
181 |
> |
iwidth = pheight*xmax/(pixaspect*ymax); |
182 |
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} |
183 |
< |
printf("matrix concatmatrix /imat exch def\n"); |
184 |
< |
PSprocdef("read6bit"); |
185 |
< |
printf("%%%%EndProlog\n"); |
186 |
< |
printf("%d %d 8 imat {read6bit} image", xmax, ymax); |
183 |
> |
if (pwidth == PHEIGHT) |
184 |
> |
printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", |
185 |
> |
HMARGIN+(pheight-iheight)*.5, |
186 |
> |
VMARGIN+(pwidth-iwidth)*.5, |
187 |
> |
HMARGIN+(pheight-iheight)*.5+iheight, |
188 |
> |
VMARGIN+(pwidth-iwidth)*.5+iwidth); |
189 |
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else |
190 |
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printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", |
191 |
> |
HMARGIN+(pwidth-iwidth)*.5, |
192 |
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VMARGIN+(pheight-iheight)*.5, |
193 |
> |
HMARGIN+(pwidth-iwidth)*.5+iwidth, |
194 |
> |
VMARGIN+(pheight-iheight)*.5+iheight); |
195 |
> |
puts("%%EndComments"); |
196 |
> |
puts("gsave save"); |
197 |
> |
puts("17 dict begin"); |
198 |
> |
/* define image reader */ |
199 |
> |
if (docolor) { |
200 |
> |
printf("/redline %d string def\n", xmax); |
201 |
> |
printf("/grnline %d string def\n", xmax); |
202 |
> |
printf("/bluline %d string def\n", xmax); |
203 |
> |
} else |
204 |
> |
printf("/gryline %d string def\n", xmax); |
205 |
> |
/* use compressed encoding? */ |
206 |
> |
if (putprim == Cputprim) |
207 |
> |
PSprocdef("read6bitRLE"); |
208 |
> |
/* set up transformation matrix */ |
209 |
> |
printf("%f %f translate\n", HMARGIN, VMARGIN); |
210 |
> |
if (pwidth == PHEIGHT) { |
211 |
> |
printf("%f 0 translate\n", PWIDTH); |
212 |
> |
puts("90 rotate"); |
213 |
> |
} |
214 |
> |
printf("%f %f translate\n", (pwidth-iwidth)*.5, (pheight-iheight)*.5); |
215 |
> |
printf("%f %f scale\n", iwidth, iheight); |
216 |
> |
puts("%%EndProlog"); |
217 |
> |
/* start image procedure */ |
218 |
> |
printf("%d %d 8 [%d 0 0 %d 0 %d]\n", xmax, ymax, xmax, -ymax, ymax); |
219 |
> |
if (putprim == Cputprim) { |
220 |
> |
if (docolor) { |
221 |
> |
puts("{redline read6bitRLE}"); |
222 |
> |
puts("{grnline read6bitRLE}"); |
223 |
> |
puts("{bluline read6bitRLE}"); |
224 |
> |
puts("true 3 colorimage"); |
225 |
> |
} else |
226 |
> |
puts("{gryline read6bitRLE} image"); |
227 |
> |
} else { |
228 |
> |
rstr = putprim==Aputprim ? "readhexstring" : "readstring"; |
229 |
> |
if (docolor) { |
230 |
> |
printf("{currentfile redline %s pop}\n", rstr); |
231 |
> |
printf("{currentfile grnline %s pop}\n", rstr); |
232 |
> |
printf("{currentfile bluline %s pop}\n", rstr); |
233 |
> |
puts("true 3 colorimage"); |
234 |
> |
} else |
235 |
> |
printf("{currentfile gryline %s pop} image\n", rstr); |
236 |
> |
} |
237 |
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} |
238 |
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|
239 |
|
|
240 |
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PStrailer() /* print PostScript trailer */ |
241 |
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{ |
242 |
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puts("%%Trailer"); |
243 |
< |
puts("end"); |
243 |
> |
if (ncopies > 1) |
244 |
> |
printf("/#copies %d def\n", ncopies); |
245 |
|
puts("showpage"); |
246 |
< |
puts("grestore"); |
246 |
> |
puts("end"); |
247 |
> |
puts("restore grestore"); |
248 |
|
puts("%%EOF"); |
249 |
|
} |
250 |
|
|
254 |
|
{ |
255 |
|
short itab[128]; |
256 |
|
register int i; |
257 |
< |
|
258 |
< |
for (i = 0; i < 128; i++) |
257 |
> |
/* assign code values */ |
258 |
> |
for (i = 0; i < 128; i++) /* clear */ |
259 |
|
itab[i] = -1; |
260 |
< |
for (i = 0; i < 64; i++) |
261 |
< |
itab[code[i]] = i<<2 | 2; |
262 |
< |
printf("/decode ["); |
260 |
> |
for (i = 1; i < 63; i++) /* assign greys */ |
261 |
> |
itab[code[i]] = 256.0*pow((i+.5)/64.0, GAMVAL); |
262 |
> |
itab[code[0]] = 0; /* black is black */ |
263 |
> |
itab[code[63]] = 255; /* and white is white */ |
264 |
> |
printf("/codetab ["); |
265 |
|
for (i = 0; i < 128; i++) { |
266 |
|
if (!(i & 0xf)) |
267 |
|
putchar('\n'); |
268 |
|
printf(" %3d", itab[i]); |
269 |
|
} |
270 |
|
printf("\n] def\n"); |
271 |
< |
printf("/scanline %d string def\n", xmax); |
272 |
< |
printf("/%s {\n", nam); |
271 |
> |
printf("/nrept 0 def\n"); |
272 |
> |
printf("/readbyte { currentfile read not {stop} if } bind def\n"); |
273 |
> |
printf("/decode { codetab exch get } bind def\n"); |
274 |
> |
printf("/%s {\t%% scanbuffer\n", nam); |
275 |
> |
printf("\t/scanline exch def\n"); |
276 |
|
printf("\t{ 0 1 %d { scanline exch\n", xmax-1); |
277 |
< |
printf("\t\t{ decode currentfile read not {stop} if get\n"); |
278 |
< |
printf("\tdup 0 lt {pop} {exit} ifelse } loop put } for\n"); |
279 |
< |
printf("} stopped {pop pop pop 0 string} {scanline} ifelse } def\n"); |
277 |
> |
printf("\t\tnrept 0 le\n"); |
278 |
> |
printf("\t\t\t{ { readbyte dup %d eq\n", RUNCHR); |
279 |
> |
printf("\t\t\t\t\t{ pop /nrept readbyte %d sub def\n", RSTRT-MINRUN+1); |
280 |
> |
printf("\t\t\t\t\t\t/reptv readbyte decode def\n"); |
281 |
> |
printf("\t\t\t\t\t\treptv exit }\n"); |
282 |
> |
printf("\t\t\t\t\t{ decode dup 0 lt {pop} {exit} ifelse }\n"); |
283 |
> |
printf("\t\t\t\tifelse } loop }\n"); |
284 |
> |
printf("\t\t\t{ /nrept nrept 1 sub def reptv }\n"); |
285 |
> |
printf("\t\tifelse put\n"); |
286 |
> |
printf("\t\t} for\n"); |
287 |
> |
printf("\t} stopped {pop pop 0 string} {scanline} ifelse\n"); |
288 |
> |
printf("} bind def\n"); |
289 |
|
} |
290 |
|
|
291 |
|
|
292 |
|
ra2ps() /* convert Radiance scanlines to 6-bit */ |
293 |
|
{ |
294 |
< |
COLR *scanin; |
199 |
< |
register int col = 0; |
200 |
< |
register int c; |
201 |
< |
register int x; |
294 |
> |
register COLR *scanin; |
295 |
|
int y; |
296 |
|
/* allocate scanline */ |
297 |
|
scanin = (COLR *)malloc(xmax*sizeof(COLR)); |
301 |
|
for (y = ymax-1; y >= 0; y--) { |
302 |
|
if (freadcolrs(scanin, xmax, stdin) < 0) |
303 |
|
quiterr("error reading Radiance picture"); |
304 |
< |
normcolrs(scanin, xmax, bradj); /* normalize */ |
305 |
< |
for (x = 0; x < xmax; x++) { |
306 |
< |
if (!(col++ & 0x3f)) |
307 |
< |
putchar('\n'); |
308 |
< |
c = normbright(scanin[x]) + (random()&3); |
309 |
< |
if (c > 255) c = 255; |
310 |
< |
putchar(code[c>>2]); |
311 |
< |
} |
304 |
> |
if (putprim == Cputprim) { |
305 |
> |
if (bradj) /* adjust exposure */ |
306 |
> |
shiftcolrs(scanin, xmax, bradj); |
307 |
> |
colrs_gambs(scanin, xmax); /* gamma compression */ |
308 |
> |
} else |
309 |
> |
normcolrs(scanin, xmax, bradj); |
310 |
> |
if (docolor) { |
311 |
> |
(*putprim)(scanin, RED); |
312 |
> |
(*putprim)(scanin, GRN); |
313 |
> |
(*putprim)(scanin, BLU); |
314 |
> |
} else |
315 |
> |
(*putprim)(scanin, GRY); |
316 |
|
if (ferror(stdout)) |
317 |
|
quiterr("error writing PostScript file"); |
318 |
|
} |
319 |
|
putchar('\n'); |
320 |
|
/* free scanline */ |
321 |
|
free((char *)scanin); |
322 |
+ |
} |
323 |
+ |
|
324 |
+ |
|
325 |
+ |
int |
326 |
+ |
Aputprim(scn, pri) /* put out hex ASCII primary from scanline */ |
327 |
+ |
COLR *scn; |
328 |
+ |
int pri; |
329 |
+ |
{ |
330 |
+ |
static char hexdigit[] = "0123456789ABCDEF"; |
331 |
+ |
static int col = 0; |
332 |
+ |
register int x, c; |
333 |
+ |
|
334 |
+ |
for (x = 0; x < xmax; x++) { |
335 |
+ |
if (pri == GRY) |
336 |
+ |
c = normbright(scn[x]); |
337 |
+ |
else |
338 |
+ |
c = scn[x][pri]; |
339 |
+ |
if (c > 255) c = 255; |
340 |
+ |
putchar(hexdigit[c>>4]); |
341 |
+ |
putchar(hexdigit[c&0xf]); |
342 |
+ |
if ((col += 2) >= 72) { |
343 |
+ |
putchar('\n'); |
344 |
+ |
col = 0; |
345 |
+ |
} |
346 |
+ |
} |
347 |
+ |
} |
348 |
+ |
|
349 |
+ |
|
350 |
+ |
int |
351 |
+ |
Bputprim(scn, pri) /* put out binary primary from scanline */ |
352 |
+ |
COLR *scn; |
353 |
+ |
int pri; |
354 |
+ |
{ |
355 |
+ |
register int x, c; |
356 |
+ |
|
357 |
+ |
for (x = 0; x < xmax; x++) { |
358 |
+ |
if (pri == GRY) |
359 |
+ |
c = normbright(scn[x]); |
360 |
+ |
else |
361 |
+ |
c = scn[x][pri]; |
362 |
+ |
if (c > 255) c = 255; |
363 |
+ |
putchar(c); |
364 |
+ |
} |
365 |
+ |
} |
366 |
+ |
|
367 |
+ |
|
368 |
+ |
int |
369 |
+ |
Cputprim(scn, pri) /* put out compressed primary from scanline */ |
370 |
+ |
COLR *scn; |
371 |
+ |
int pri; |
372 |
+ |
{ |
373 |
+ |
register int c; |
374 |
+ |
register int x; |
375 |
+ |
int lastc, cnt; |
376 |
+ |
|
377 |
+ |
lastc = -1; cnt = 0; |
378 |
+ |
for (x = 0; x < xmax; x++) { |
379 |
+ |
if (pri == GRY) |
380 |
+ |
c = normbright(scn[x]) + 2; |
381 |
+ |
else |
382 |
+ |
c = scn[x][pri] + 2; |
383 |
+ |
if (c > 255) c = 255; |
384 |
+ |
c = code[c>>2]; |
385 |
+ |
if (c == lastc && cnt < MAXRUN) |
386 |
+ |
cnt++; |
387 |
+ |
else { |
388 |
+ |
putrle(cnt, lastc); |
389 |
+ |
lastc = c; |
390 |
+ |
cnt = 1; |
391 |
+ |
} |
392 |
+ |
} |
393 |
+ |
putrle(cnt, lastc); |
394 |
+ |
} |
395 |
+ |
|
396 |
+ |
|
397 |
+ |
putrle(cnt, cod) /* put out cnt of cod */ |
398 |
+ |
register int cnt, cod; |
399 |
+ |
{ |
400 |
+ |
static int col = 0; |
401 |
+ |
|
402 |
+ |
if (cnt >= MINRUN) { |
403 |
+ |
col += 3; |
404 |
+ |
putchar(RUNCHR); |
405 |
+ |
putchar(RSTRT-MINRUN+cnt); |
406 |
+ |
putchar(cod); |
407 |
+ |
} else { |
408 |
+ |
col += cnt; |
409 |
+ |
while (cnt-- > 0) |
410 |
+ |
putchar(cod); |
411 |
+ |
} |
412 |
+ |
if (col >= 72) { |
413 |
+ |
putchar('\n'); |
414 |
+ |
col = 0; |
415 |
+ |
} |
416 |
|
} |