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/* Copyright (c) 1992 Regents of the University of California */ |
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/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static char SCCSid[] = "$SunId$ SGI"; |
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#endif |
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/* |
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*/ |
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#include <stdio.h> |
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#include <math.h> |
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#include <ctype.h> |
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#ifdef MSDOS |
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#include <fcntl.h> |
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#endif |
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#include "color.h" |
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|
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#define UPPER(c) ((c)&~0x20) /* ASCII trick */ |
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|
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#define CODE6GAM 1.47 /* gamma for 6-bit codes */ |
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#define DEFDGAM 1.0 /* default device gamma */ |
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|
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#define GRY -1 /* artificial index for grey */ |
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|
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#define HMARGIN (.5*72) /* horizontal margin */ |
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#define VMARGIN (.5*72) /* vertical margin */ |
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#define PWIDTH (8.5*72-2*HMARGIN) /* width of device */ |
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#define PHEIGHT (11*72-2*VMARGIN) /* height of device */ |
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#define DEFMARG 0.5 /* default margin (inches) */ |
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#define DEFWIDTH 8.5 /* default page width */ |
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#define DEFHEIGHT 11 /* default page height */ |
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#define HMARGIN (hmarg*72) /* horizontal margin */ |
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#define VMARGIN (vmarg*72) /* vertical margin */ |
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#define PWIDTH (width*72-2*HMARGIN) /* width of device */ |
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#define PHEIGHT (height*72-2*VMARGIN) /* height of device */ |
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|
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#define RUNCHR '*' /* character to start rle */ |
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#define MINRUN 4 /* minimum run-length */ |
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int wrongformat = 0; /* input in wrong format? */ |
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double pixaspect = 1.0; /* pixel aspect ratio */ |
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|
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double devgam = DEFDGAM; /* device gamma response */ |
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double hmarg = DEFMARG, |
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vmarg = DEFMARG; /* horizontal and vertical margins */ |
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double width = DEFWIDTH, |
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height = DEFHEIGHT; /* default paper width and height */ |
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int docolor = 0; /* produce color image? */ |
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int bradj = 0; /* brightness adjustment */ |
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int ncopies = 1; /* number of copies */ |
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|
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extern int Aputprim(), Bputprim(), Cputprim(); |
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|
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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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|
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int xmax, ymax; |
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|
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extern char *malloc(); |
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extern double unit2inch(); |
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|
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|
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headline(s) /* check header line */ |
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char *argv[]; |
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{ |
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int i; |
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double d; |
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|
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progname = argv[0]; |
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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++; |
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docolor = 1; |
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break; |
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case 'A': /* standard ASCII encoding */ |
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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 'g': /* device gamma adjustment */ |
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devgam = atof(argv[++i]); |
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break; |
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case 'p': /* paper size */ |
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parsepaper(argv[++i]); |
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break; |
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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]) { |
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case '\0': |
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hmarg = vmarg = d; |
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break; |
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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; |
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} |
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i++; |
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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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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(CODE6GAM/devgam); |
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else if (devgam != 1.) |
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setcolrgam(1./devgam); |
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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: |
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fprintf(stderr, "Usage: %s [-c][-e +/-stops] [input [output]]\n", |
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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", |
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progname); |
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exit(1); |
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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; |
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{ |
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static struct unit {char n; float f} u[] = { |
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'i', 1., |
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'm', 1./25.4, |
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'c', 1./2.54, |
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'\0' }; |
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register struct unit *up; |
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|
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while (*s && !isalpha(*s)) |
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s++; |
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for (up = u; up->n; up++) |
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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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|
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while (*s) { |
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if (isalpha(*s)) { |
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if (!isalpha(*id) || UPPER(*s) != UPPER(*id)) |
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return(0); |
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} else if (*s != *id) |
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return(0); |
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s++; id++; |
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} |
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return(!*id || s-name >= 3); /* substrings >= 3 chars OK */ |
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} |
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|
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|
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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[] = { |
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"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., |
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"A3", 11.69, 16.54, |
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"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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"" }; |
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register struct psize *pp; |
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register char *s = ps; |
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double d; |
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|
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if (isdigit(*s)) { /* check for WWxHH specification */ |
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width = atof(s); |
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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 */ |
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char *err; |
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{ |
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PSheader(name) /* print PostScript header */ |
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char *name; |
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{ |
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char *rstr; |
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int landscape = 0; |
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double pwidth, pheight; |
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double iwidth, iheight; |
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HMARGIN+(pwidth-iwidth)*.5+iwidth, |
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VMARGIN+(pheight-iheight)*.5+iheight); |
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puts("%%EndComments"); |
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puts("save"); |
328 |
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puts("64 dict begin"); |
327 |
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puts("gsave save"); |
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puts("17 dict begin"); |
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/* define image reader */ |
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if (docolor) { |
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printf("/redline %d string def\n", xmax); |
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printf("/grnline %d string def\n", xmax); |
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printf("/bluline %d string def\n", xmax); |
334 |
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printf("/rgbline %d string def\n", 3*xmax); |
335 |
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PSprocdef("read6bitRLE", "interleave"); |
336 |
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} else { |
337 |
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printf("/greyline %d string def\n", xmax); |
338 |
< |
PSprocdef("read6bitRLE", NULL); |
185 |
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} |
334 |
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} else |
335 |
> |
printf("/gryline %d string def\n", xmax); |
336 |
> |
/* use compressed encoding? */ |
337 |
> |
if (putprim == Cputprim) |
338 |
> |
PSprocdef("read6bitRLE"); |
339 |
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/* set up transformation matrix */ |
340 |
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printf("%f %f translate\n", HMARGIN, VMARGIN); |
341 |
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if (pwidth == PHEIGHT) { |
342 |
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printf("0 %f translate\n", PHEIGHT); |
343 |
< |
puts("-90 rotate"); |
342 |
> |
printf("%f 0 translate\n", PWIDTH); |
343 |
> |
puts("90 rotate"); |
344 |
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} |
345 |
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printf("%f %f translate\n", (pwidth-iwidth)*.5, (pheight-iheight)*.5); |
346 |
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printf("%f %f scale\n", iwidth, iheight); |
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puts("%%EndProlog"); |
348 |
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/* start image procedure */ |
349 |
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printf("%d %d 8 [%d 0 0 %d 0 %d] ", xmax, ymax, xmax, -ymax, ymax); |
350 |
< |
if (docolor) { |
351 |
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puts("{redline read6bitRLE grnline read6bitRLE"); |
352 |
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puts("\tbluline read6bitRLE rgbline interleave} false 3 colorimage"); |
353 |
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} else |
354 |
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puts("{greyline read6bitRLE} image"); |
349 |
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printf("%d %d 8 [%d 0 0 %d 0 %d]\n", xmax, ymax, xmax, -ymax, ymax); |
350 |
> |
if (putprim == Cputprim) { |
351 |
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if (docolor) { |
352 |
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puts("{redline read6bitRLE}"); |
353 |
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puts("{grnline read6bitRLE}"); |
354 |
> |
puts("{bluline read6bitRLE}"); |
355 |
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puts("true 3 colorimage"); |
356 |
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} 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 |
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} |
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|
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|
375 |
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printf("/#copies %d def\n", ncopies); |
376 |
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puts("showpage"); |
377 |
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puts("end"); |
378 |
< |
puts("restore"); |
378 |
> |
puts("restore grestore"); |
379 |
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puts("%%EOF"); |
380 |
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} |
381 |
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|
382 |
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|
383 |
< |
PSprocdef(nam, inam) /* define PS procedure to read image */ |
384 |
< |
char *nam, *inam; |
383 |
> |
PSprocdef(nam) /* define PS procedure to read image */ |
384 |
> |
char *nam; |
385 |
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{ |
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short itab[128]; |
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register int i; |
389 |
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for (i = 0; i < 128; i++) /* clear */ |
390 |
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itab[i] = -1; |
391 |
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for (i = 1; i < 63; i++) /* assign greys */ |
392 |
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itab[code[i]] = i<<2 | 2; |
392 |
> |
itab[code[i]] = 256.0*pow((i+.5)/64.0, CODE6GAM); |
393 |
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itab[code[0]] = 0; /* black is black */ |
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itab[code[63]] = 255; /* and white is white */ |
395 |
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printf("/codetab ["); |
417 |
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printf("\t\t} for\n"); |
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printf("\t} stopped {pop pop 0 string} {scanline} ifelse\n"); |
419 |
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printf("} bind def\n"); |
254 |
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if (inam == NULL) |
255 |
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return; |
256 |
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/* define interleaving procedure */ |
257 |
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printf("/%s {\t%% redscn grnscn bluscn rgbscn\n", inam); |
258 |
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printf("\t/rgbscan exch def /bscan exch def\n"); |
259 |
– |
printf("\t/gscan exch def /rscan exch def\n"); |
260 |
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printf("\trscan length %d eq gscan length %d eq and ", xmax, xmax); |
261 |
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printf("bscan length %d eq and \n", xmax); |
262 |
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printf("\t{ 0 1 %d { /ndx exch def\n", xmax-1); |
263 |
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printf("\t\trgbscan ndx 3 mul rscan ndx get put\n"); |
264 |
– |
printf("\t\trgbscan ndx 3 mul 1 add gscan ndx get put\n"); |
265 |
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printf("\t\trgbscan ndx 3 mul 2 add bscan ndx get put\n"); |
266 |
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printf("\t\t} for rgbscan }\n"); |
267 |
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printf("\t{0 string} ifelse\n"); |
268 |
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printf("} bind def\n"); |
420 |
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} |
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|
422 |
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|
432 |
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for (y = ymax-1; y >= 0; y--) { |
433 |
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if (freadcolrs(scanin, xmax, stdin) < 0) |
434 |
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quiterr("error reading Radiance picture"); |
435 |
< |
normcolrs(scanin, xmax, bradj); /* normalize */ |
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); |
442 |
> |
(*putprim)(scanin, RED); |
443 |
> |
(*putprim)(scanin, GRN); |
444 |
> |
(*putprim)(scanin, BLU); |
445 |
|
} else |
446 |
< |
putprim(scanin, GRY); |
446 |
> |
(*putprim)(scanin, GRY); |
447 |
|
if (ferror(stdout)) |
448 |
|
quiterr("error writing PostScript file"); |
449 |
|
} |
453 |
|
} |
454 |
|
|
455 |
|
|
456 |
< |
putprim(scn, pri) /* put out one primary from scanline */ |
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 |
|
{ |