--- ray/src/px/ra_ps.c 1992/08/14 14:04:09 2.5 +++ ray/src/px/ra_ps.c 2004/03/28 20:33:14 2.28 @@ -1,38 +1,83 @@ -/* Copyright (c) 1992 Regents of the University of California */ - #ifndef lint -static char SCCSid[] = "$SunId$ LBL"; +static const char RCSid[] = "$Id: ra_ps.c,v 2.28 2004/03/28 20:33:14 schorsch Exp $"; #endif - /* * Radiance picture to PostScript file translator -- one way! */ #include +#include +#include +#include + +#include "platform.h" #include "color.h" -#include "random.h" +#include "resolu.h" -#define HMARGIN (.5*72) /* horizontal margin */ -#define VMARGIN (.5*72) /* vertical margin */ -#define PWIDTH (8.5*72-2*HMARGIN) /* width of device */ -#define PHEIGHT (11*72-2*VMARGIN) /* height of device */ +#define UPPER(c) ((c)&~0x20) /* ASCII trick */ +#define CODE6GAM 1.47 /* gamma for 6-bit codes */ +#define DEFGGAM 1.0 /* greyscale device gamma */ +#define DEFCGAM 1.8 /* color device gamma */ + +#define GRY -1 /* artificial index for grey */ + +#define DEFMARG 0.5 /* default margin (inches) */ +#define DEFWIDTH 8.5 /* default page width */ +#define DEFHEIGHT 11 /* default page height */ +#define HMARGIN (hmarg*72) /* horizontal margin */ +#define VMARGIN (vmarg*72) /* vertical margin */ +#define PWIDTH (width*72-2*HMARGIN) /* width of device */ +#define PHEIGHT (height*72-2*VMARGIN) /* height of device */ + +#define RUNCHR '*' /* character to start rle */ +#define MINRUN 4 /* minimum run-length */ +#define RSTRT '!' /* character for MINRUN */ +#define MAXRUN (MINRUN+'~'-RSTRT) /* maximum run-length */ + char code[] = /* 6-bit code lookup table */ "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ@+"; int wrongformat = 0; /* input in wrong format? */ -double pixaspect = 1.0; /* pixel aspect ratio */ +double pixaspect = 1.0; /* pixel aspect ratio */ +double devgam = 0.; /* device gamma response */ +double hmarg = DEFMARG, + vmarg = DEFMARG; /* horizontal and vertical margins */ +double width = DEFWIDTH, + height = DEFHEIGHT; /* default paper width and height */ +double dpi = 0; /* print density (0 if unknown) */ +int docolor = 1; /* produce color image? */ int bradj = 0; /* brightness adjustment */ int ncopies = 1; /* number of copies */ char *progname; +int xmax, ymax; /* input image dimensions */ -int xmax, ymax; +typedef void putprimf_t(COLR *scn, int pri); +static gethfunc headline; +static putprimf_t Aputprim, Bputprim, Cputprim; -headline(s) /* check header line */ -char *s; +static double unit2inch(register char *s); +static int matchid(char *name, char *id); +static void parsepaper(char *ps); +static void quiterr(char *err); +static void PSheader(int ac, char **av); +static void PStrailer(void); +static void PSprocdef(char *nam); +static void ra2ps(void); +static void putrle(int cnt, int cod); + + +putprimf_t *putprim = Aputprim; /* function for writing scanline */ + + +static int +headline( /* check header line */ + char *s, + void *p +) { char fmt[32]; @@ -41,20 +86,62 @@ char *s; wrongformat = strcmp(fmt, COLRFMT); } else if (isaspect(s)) pixaspect *= aspectval(s); + return(0); } - -main(argc, argv) -int argc; -char *argv[]; +int +main(int argc, char *argv[]) { int i; + double d; progname = argv[0]; for (i = 1; i < argc; i++) if (argv[i][0] == '-') switch (argv[i][1]) { + case 'b': /* produce b&w PostScript */ + docolor = 0; + break; + case 'c': /* produce color PostScript */ + docolor = 1; + break; + case 'A': /* standard ASCII encoding */ + putprim = Aputprim; + break; + case 'B': /* standard binary encoding */ + putprim = Bputprim; + break; + case 'C': /* compressed ASCII encoding */ + putprim = Cputprim; + break; + case 'd': /* print density */ + dpi = atof(argv[++i]); + break; + case 'g': /* device gamma adjustment */ + devgam = atof(argv[++i]); + break; + case 'p': /* paper size */ + parsepaper(argv[++i]); + break; + case 'm': /* margin */ + d = atof(argv[i+1]); + d *= unit2inch(argv[i+1]); + switch (argv[i][2]) { + case '\0': + hmarg = vmarg = d; + break; + case 'h': + hmarg = d; + break; + case 'v': + vmarg = d; + break; + default: + goto userr; + } + i++; + break; case 'e': /* exposure adjustment */ if (argv[i+1][0] != '+' && argv[i+1][0] != '-') goto userr; @@ -77,30 +164,140 @@ char *argv[]; exit(1); } if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { - fprintf(stderr, "can't open output \"%s\"\n", + fprintf(stderr, "%s: can't open output \"%s\"\n", progname, argv[i+1]); exit(1); } + SET_FILE_BINARY(stdin); /* get our header */ getheader(stdin, headline, NULL); if (wrongformat || fgetresolu(&xmax, &ymax, stdin) < 0) quiterr("bad picture format"); + /* gamma compression */ + if (devgam <= 0.05) + devgam = docolor ? DEFCGAM : DEFGGAM; + if (putprim == Cputprim) + setcolrgam(CODE6GAM); + else if (devgam != 1.) + setcolrgam(devgam); /* write header */ - PSheader(i <= argc-1 ? argv[i] : ""); + PSheader(argc, argv); /* convert file */ ra2ps(); /* write trailer */ PStrailer(); exit(0); userr: - fprintf(stderr, "Usage: %s [-e +/-stops] [input [output]]\n", progname); + fprintf(stderr, +"Usage: %s [-b|c][-A|B|C][-e +/-stops][-p paper][-m[h|v] margin][-d dpi][-g gamma] [input [output]]\n", + progname); exit(1); } -quiterr(err) /* print message and exit */ -char *err; +static double +unit2inch( /* determine unit */ + register char *s +) { + static struct unit {char n; float f;} u[] = { + {'i', 1.}, + {'m', 1./25.4}, + {'c', 1./2.54}, + {'\0',0} }; + register struct unit *up; + + while (*s && !isalpha(*s)) + s++; + for (up = u; up->n; up++) + if (up->n == *s) + return(up->f); + return(1.); +} + + +static int +matchid( /* see if name matches id (case insensitive) */ + char *name, + register char *id +) +{ + register char *s = name; + + while (*s) { + if (isalpha(*s)) { + if (!isalpha(*id) || UPPER(*s) != UPPER(*id)) + return(0); + } else if (*s != *id) + return(0); + s++; id++; + } + return(!*id || s-name >= 3); /* substrings >= 3 chars OK */ +} + + +static void +parsepaper( /* determine paper size from name */ + char *ps +) +{ + static struct psize {char n[12]; float w,h;} p[] = { + {"envelope", 4.12, 9.5}, + {"executive", 7.25, 10.5}, + {"letter", 8.5, 11.}, + {"lettersmall", 7.68, 10.16}, + {"legal", 8.5, 14.}, + {"monarch", 3.87, 7.5}, + {"statement", 5.5, 8.5}, + {"tabloid", 11., 17.}, + {"A3", 11.69, 16.54}, + {"A4", 8.27, 11.69}, + {"A4small", 7.47, 10.85}, + {"A5", 6.00, 8.27}, + {"A6", 4.13, 6.00}, + {"B4", 10.12, 14.33}, + {"B5", 7.17, 10.12}, + {"C5", 6.38, 9.01}, + {"C6", 4.49, 6.38}, + {"DL", 4.33, 8.66}, + {"hagaki", 3.94, 5.83}, + {"",0.0,0.0} }; + register struct psize *pp; + register char *s = ps; + double d; + + if (isdigit(*s)) { /* check for WWxHH specification */ + width = atof(s); + while (*s && !isalpha(*s)) + s++; + d = unit2inch(s); + height = atof(++s); + width *= d; + height *= d; + if ((width >= 1.) & (height >= 1.)) + return; + } else /* check for match to standard size */ + for (pp = p; pp->n[0]; pp++) + if (matchid(s, pp->n)) { + width = pp->w; + height = pp->h; + return; + } + fprintf(stderr, "%s: unknown paper size \"%s\" -- known sizes:\n", + progname, ps); + fprintf(stderr, "_Name________Width_Height_(inches)\n"); + for (pp = p; pp->n[0]; pp++) + fprintf(stderr, "%-11s %5.2f %5.2f\n", pp->n, pp->w, pp->h); + fprintf(stderr, "Or use WWxHH size specification\n"); + exit(1); +} + + +static void +quiterr( /* print message and exit */ + char *err +) +{ if (err != NULL) { fprintf(stderr, "%s: %s\n", progname, err); exit(1); @@ -109,65 +306,124 @@ char *err; } -PSheader(name) /* print PostScript header */ -char *name; +static void +PSheader( /* print PostScript header */ + int ac, + char **av +) { - int landscape = 0; - double pwidth, pheight; - double iwidth, iheight; - - printf("%%!\n"); - printf("%%%%Title: %s\n", name); + char *rstr; + int landscape, rotate, n; + double pwidth, pheight; + double iwidth, iheight; + /* EPS comments */ + puts("%!PS-Adobe-2.0 EPSF-2.0"); + printf("%%%%Title: "); printargs(ac, av, stdout); printf("%%%%Creator: %s\n", progname); printf("%%%%Pages: %d\n", ncopies); - if (landscape = xmax > pixaspect*ymax) - printf("%%%%Landscape\n"); + if ( (landscape = xmax > pixaspect*ymax) ) + puts("%%Orientation: Landscape"); else - printf("%%%%Portrait\n"); - printf("%%%%EndComments\n"); - printf("64 dict begin\n"); - /* define image reader */ - PSprocdef("read6bit"); - /* set up transformation matrix */ - printf("%f %f translate\n", HMARGIN, VMARGIN); - if (PWIDTH > PHEIGHT ^ landscape) { - printf("0 %f translate\n", PHEIGHT); - printf("-90 rotate\n"); + puts("%%Orientation: Portrait"); + if ( (rotate = (PWIDTH > PHEIGHT) ^ landscape) ) { pwidth = PHEIGHT; pheight = PWIDTH; } else { pwidth = PWIDTH; pheight = PHEIGHT; } - if (pheight/pwidth > pixaspect*ymax/xmax) { - iwidth = pwidth; - iheight = pwidth*pixaspect*ymax/xmax; - } else { - iheight = pheight; - iwidth = pheight*xmax/(pixaspect*ymax); + if (dpi > 100 && (pixaspect >= 0.99) & (pixaspect <= 1.01)) + if (pheight/pwidth > ymax/xmax) { + n = pwidth*dpi/xmax; /* floor */ + iwidth = n > 0 ? (double)(n*xmax)/dpi : pwidth; + iheight = iwidth*ymax/xmax; + } else { + n = pheight*dpi/ymax; /* floor */ + iheight = n > 0 ? (double)(n*ymax)/dpi : pheight; + iwidth = iheight*xmax/ymax; + } + else + if (pheight/pwidth > pixaspect*ymax/xmax) { + iwidth = pwidth; + iheight = iwidth*pixaspect*ymax/xmax; + } else { + iheight = pheight; + iwidth = iheight*xmax/(pixaspect*ymax); + } + if (rotate) + printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", + HMARGIN+(pheight-iheight)*.5, + VMARGIN+(pwidth-iwidth)*.5, + HMARGIN+(pheight-iheight)*.5+iheight, + VMARGIN+(pwidth-iwidth)*.5+iwidth); + else + printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", + HMARGIN+(pwidth-iwidth)*.5, + VMARGIN+(pheight-iheight)*.5, + HMARGIN+(pwidth-iwidth)*.5+iwidth, + VMARGIN+(pheight-iheight)*.5+iheight); + puts("%%EndComments"); + puts("gsave save"); + puts("17 dict begin"); + /* define image reader */ + if (docolor) { + printf("/redline %d string def\n", xmax); + printf("/grnline %d string def\n", xmax); + printf("/bluline %d string def\n", xmax); + } else + printf("/gryline %d string def\n", xmax); + /* use compressed encoding? */ + if (putprim == Cputprim) + PSprocdef("read6bitRLE"); + /* set up transformation matrix */ + printf("%f %f translate\n", HMARGIN, VMARGIN); + if (rotate) { + printf("%f 0 translate\n", PWIDTH); + puts("90 rotate"); } printf("%f %f translate\n", (pwidth-iwidth)*.5, (pheight-iheight)*.5); printf("%f %f scale\n", iwidth, iheight); - printf("%%%%EndProlog\n"); + puts("%%EndProlog"); /* start image procedure */ - printf("%d %d 8 [%d 0 0 %d 0 %d] {read6bit} image", xmax, ymax, - xmax, -ymax, ymax); + printf("%d %d 8 [%d 0 0 %d 0 %d]\n", xmax, ymax, xmax, -ymax, ymax); + if (putprim == Cputprim) { + if (docolor) { + puts("{redline read6bitRLE}"); + puts("{grnline read6bitRLE}"); + puts("{bluline read6bitRLE}"); + puts("true 3 colorimage"); + } else + puts("{gryline read6bitRLE} image"); + } else { + rstr = putprim==Aputprim ? "readhexstring" : "readstring"; + if (docolor) { + printf("{currentfile redline %s pop}\n", rstr); + printf("{currentfile grnline %s pop}\n", rstr); + printf("{currentfile bluline %s pop}\n", rstr); + puts("true 3 colorimage"); + } else + printf("{currentfile gryline %s pop} image\n", rstr); + } } -PStrailer() /* print PostScript trailer */ +static void +PStrailer(void) /* print PostScript trailer */ { puts("%%Trailer"); if (ncopies > 1) printf("/#copies %d def\n", ncopies); puts("showpage"); puts("end"); + puts("restore grestore"); puts("%%EOF"); } -PSprocdef(nam) /* define PS procedure to read image */ -char *nam; +static void +PSprocdef( /* define PS procedure to read image */ + char *nam +) { short itab[128]; register int i; @@ -175,31 +431,41 @@ char *nam; for (i = 0; i < 128; i++) /* clear */ itab[i] = -1; for (i = 1; i < 63; i++) /* assign greys */ - itab[code[i]] = i<<2 | 2; - itab[code[0]] = 0; /* black is black */ - itab[code[63]] = 255; /* and white is white */ - printf("/decode ["); + itab[(int)code[i]] = 256.0*pow((i+.5)/64.0, CODE6GAM/devgam); + itab[(int)code[0]] = 0; /* black is black */ + itab[(int)code[63]] = 255; /* and white is white */ + printf("/codetab ["); for (i = 0; i < 128; i++) { if (!(i & 0xf)) putchar('\n'); printf(" %3d", itab[i]); } printf("\n] def\n"); - printf("/scanline %d string def\n", xmax); - printf("/%s {\n", nam); + printf("/nrept 0 def\n"); + printf("/readbyte { currentfile read not {stop} if } bind def\n"); + printf("/decode { codetab exch get } bind def\n"); + printf("/%s {\t%% scanbuffer\n", nam); + printf("\t/scanline exch def\n"); printf("\t{ 0 1 %d { scanline exch\n", xmax-1); - printf("\t\t{ decode currentfile read not {stop} if get\n"); - printf("\tdup 0 lt {pop} {exit} ifelse } loop put } for\n"); - printf("} stopped {pop pop pop 0 string} {scanline} ifelse } def\n"); + printf("\t\tnrept 0 le\n"); + printf("\t\t\t{ { readbyte dup %d eq\n", RUNCHR); + printf("\t\t\t\t\t{ pop /nrept readbyte %d sub def\n", RSTRT-MINRUN+1); + printf("\t\t\t\t\t\t/reptv readbyte decode def\n"); + printf("\t\t\t\t\t\treptv exit }\n"); + printf("\t\t\t\t\t{ decode dup 0 lt {pop} {exit} ifelse }\n"); + printf("\t\t\t\tifelse } loop }\n"); + printf("\t\t\t{ /nrept nrept 1 sub def reptv }\n"); + printf("\t\tifelse put\n"); + printf("\t\t} for\n"); + printf("\t} stopped {pop pop 0 string} {scanline} ifelse\n"); + printf("} bind def\n"); } -ra2ps() /* convert Radiance scanlines to 6-bit */ +static void +ra2ps(void) /* convert Radiance scanlines to 6-bit */ { - COLR *scanin; - register int col = 0; - register int c; - register int x; + register COLR *scanin; int y; /* allocate scanline */ scanin = (COLR *)malloc(xmax*sizeof(COLR)); @@ -209,18 +475,122 @@ ra2ps() /* convert Radiance scanlines to 6-bit */ for (y = ymax-1; y >= 0; y--) { if (freadcolrs(scanin, xmax, stdin) < 0) quiterr("error reading Radiance picture"); - normcolrs(scanin, xmax, bradj); /* normalize */ - for (x = 0; x < xmax; x++) { - if (!(col++ & 0x3f)) - putchar('\n'); - c = normbright(scanin[x]) + (random()&3); - if (c > 255) c = 255; - putchar(code[c>>2]); - } + if (putprim == Cputprim || devgam != 1.) { + if (bradj) /* adjust exposure */ + shiftcolrs(scanin, xmax, bradj); + colrs_gambs(scanin, xmax); /* gamma compression */ + } else + normcolrs(scanin, xmax, bradj); + if (docolor) { + (*putprim)(scanin, RED); + (*putprim)(scanin, GRN); + (*putprim)(scanin, BLU); + } else + (*putprim)(scanin, GRY); if (ferror(stdout)) quiterr("error writing PostScript file"); } putchar('\n'); /* free scanline */ - free((char *)scanin); + free((void *)scanin); +} + + +static void +Aputprim( /* put out hex ASCII primary from scanline */ + COLR *scn, + int pri +) +{ + static char hexdigit[] = "0123456789ABCDEF"; + static int col = 0; + register int x, c; + + for (x = 0; x < xmax; x++) { + if (pri == GRY) + c = normbright(scn[x]); + else + c = scn[x][pri]; + if (c > 255) c = 255; + putchar(hexdigit[c>>4]); + putchar(hexdigit[c&0xf]); + if ((col += 2) >= 72) { + putchar('\n'); + col = 0; + } + } +} + + +static void +Bputprim( /* put out binary primary from scanline */ + COLR *scn, + int pri +) +{ + register int x, c; + + for (x = 0; x < xmax; x++) { + if (pri == GRY) + c = normbright(scn[x]); + else + c = scn[x][pri]; + if (c > 255) c = 255; + putchar(c); + } +} + + +static void +Cputprim( /* put out compressed primary from scanline */ + COLR *scn, + int pri +) +{ + register int c; + register int x; + int lastc, cnt; + + lastc = -1; cnt = 0; + for (x = 0; x < xmax; x++) { + if (pri == GRY) + c = normbright(scn[x]) + 2; + else + c = scn[x][pri] + 2; + if (c > 255) c = 255; + c = code[c>>2]; + if (c == lastc && cnt < MAXRUN) + cnt++; + else { + putrle(cnt, lastc); + lastc = c; + cnt = 1; + } + } + putrle(cnt, lastc); +} + + +static void +putrle( /* put out cnt of cod */ + register int cnt, + register int cod +) +{ + static int col = 0; + + if (cnt >= MINRUN) { + col += 3; + putchar(RUNCHR); + putchar(RSTRT-MINRUN+cnt); + putchar(cod); + } else { + col += cnt; + while (cnt-- > 0) + putchar(cod); + } + if (col >= 72) { + putchar('\n'); + col = 0; + } }