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#ifndef lint |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* d48c.c - driver for dicomed D48 film recorder w/ color optics. |
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* |
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* 3/26/87 |
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*/ |
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|
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#include <stdio.h> |
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|
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#include <signal.h> |
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|
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#include "color.h" |
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|
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|
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#define HSIZE 4096 /* device width */ |
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#define VSIZE 4096 /* device height */ |
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|
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#define MAXMULT 15 /* maximum element size */ |
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|
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/* dicomed commands */ |
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#define O_ECS 0 /* encoded command select */ |
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#define O_CONF 03400 /* configuration code */ |
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#define O_FES 020000 /* function element select */ |
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#define O_VPA 040000 /* vector or position absolute */ |
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#define O_ICS 0100000 /* initial condition select */ |
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#define O_PES 0120000 /* point element select */ |
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|
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/* ECS commands */ |
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#define ECS_FA 07 /* film advance */ |
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#define ECS_RED 011 /* select red filter */ |
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#define ECS_GRN 012 /* select green filter */ |
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#define ECS_BLU 014 /* select blue filter */ |
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#define ECS_NEU 017 /* select neutral filter */ |
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#define ECS_RAS 020 /* select raster mode */ |
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#define ECS_COL 022 /* select color mode */ |
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#define ECS_BW 023 /* select black and white mode */ |
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#define ECS_BT 024 /* bypass translation tables */ |
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|
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/* FES functions */ |
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#define FES_RE 030000 /* raster element */ |
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#define FES_RL 0170000 /* run length */ |
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|
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/* ICS fields */ |
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#define ICS_HVINT 040 /* interchange h and v axes */ |
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#define ICS_VREV 0100 /* reverse v axis direction */ |
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#define ICS_HREV 0200 /* reverse h axis direction */ |
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|
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int nrows; /* number of rows for output */ |
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int ncols; /* number of columns for output */ |
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|
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int mult; /* number of h/v points per elem. */ |
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|
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int hhome; /* offset for h */ |
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int vhome; /* offset for v */ |
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|
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/* dicomed configurations */ |
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#define C_POLAROID 0 /* polaroid print */ |
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#define C_35FRES 1 /* 35mm full resolution */ |
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#define C_35FFRA 2 /* 35mm full frame */ |
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#define C_SHEET 3 /* 4X5 sheet film */ |
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|
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#define NCONF 4 /* number of configurations */ |
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|
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struct config { |
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char *name; /* configuration name */ |
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int ccode; /* configuration code */ |
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int icsfield; /* initial condition select */ |
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int hbeg, vbeg; /* coord. origin */ |
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int hsiz, vsiz; /* dimensions */ |
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} ctab[NCONF] = { |
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{ "polaroid", 11, ICS_HVINT|ICS_VREV, 0, 0, 4096, 4096 }, |
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{ "35r", 5, 0, 0, 0, 4096, 4096 }, |
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{ "35f", 7, 0, 39, 692, 4018, 2712 }, |
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{ "sheet", 10, ICS_HVINT|ICS_VREV, 0, 0, 4096, 4096 }, |
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}; |
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|
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#define NEU 3 /* neutral color */ |
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|
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struct filter { |
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float cv[3]; /* filter color vector */ |
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char *fn; /* file name for this color */ |
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FILE *fp; /* stream for this color */ |
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} ftab[4] = { |
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{ {1.0, 0.0, 0.0}, NULL, NULL }, /* red */ |
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{ {0.0, 1.0, 0.0}, NULL, NULL }, /* green */ |
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{ {0.0, 0.0, 1.0}, NULL, NULL }, /* blue */ |
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{ {0.3, 0.59, 0.11}, NULL, NULL }, /* neutral */ |
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}; |
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|
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#define f_val(col,f) ( colval(col,0)*ftab[f].cv[0] + \ |
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colval(col,1)*ftab[f].cv[1] + \ |
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colval(col,2)*ftab[f].cv[2] ) |
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|
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float neumap[] = { /* neutral map, log w/ E6 */ |
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.0, .0, |
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.0004, .059, |
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.0008, .122, |
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.0018, .184, |
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.0033, .247, |
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.0061, .310, |
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.0119, .373, |
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.0202, .435, |
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.0373, .498, |
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.065, .561, |
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.113, .624, |
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.199, .686, |
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.300, .749, |
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.432, .812, |
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.596, .875, |
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.767, .937, |
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1.000, 1.000, |
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}; |
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|
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|
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#define TEMPLATE "/tmp/dXXXXXX" |
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|
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int docolor = 1; /* color? */ |
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|
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int cftype = C_35FFRA; /* configuration type */ |
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|
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char *progname; /* program name */ |
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|
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|
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
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int quit(); |
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int i; |
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|
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if (signal(SIGINT, quit) == SIG_IGN) |
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signal(SIGINT, SIG_IGN); |
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if (signal(SIGHUP, quit) == SIG_IGN) |
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signal(SIGINT, SIG_IGN); |
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signal(SIGTERM, quit); |
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signal(SIGPIPE, quit); |
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signal(SIGXCPU, quit); |
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signal(SIGXFSZ, quit); |
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|
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progname = argv[0]; |
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|
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for (i = 1; i < argc && argv[i][0] == '-'; i++) |
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switch (argv[i][1]) { |
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case 'c': /* color */ |
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docolor = 1; |
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break; |
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case 'b': /* black and white */ |
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docolor = 0; |
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break; |
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case 't': /* type */ |
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settype(argv[++i]); |
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break; |
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default: |
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fprintf(stderr, "%s: Unknown option: %s\n", |
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progname, argv[i]); |
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quit(1); |
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break; |
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} |
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|
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if (i < argc) |
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for ( ; i < argc; i++) |
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dofile(argv[i]); |
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else |
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dofile(NULL); |
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|
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quit(0); |
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} |
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|
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|
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settype(cname) /* set configuration type */ |
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char *cname; |
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{ |
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for (cftype = 0; cftype < NCONF; cftype++) |
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if (!strcmp(cname, ctab[cftype].name)) |
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return; |
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|
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fprintf(stderr, "%s: Unknown type: %s\n", progname, cname); |
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quit(1); |
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} |
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|
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|
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void |
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quit(code) /* quit program */ |
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int code; |
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{ |
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int i; |
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|
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for (i = 0; i < 4; i++) |
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if (ftab[i].fn != NULL) |
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unlink(ftab[i].fn); |
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exit(code); |
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} |
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|
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|
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dofile(fname) /* convert file to dicomed format */ |
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char *fname; |
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{ |
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FILE *fin; |
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char sbuf[128]; |
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COLOR scanline[HSIZE]; |
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int i; |
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|
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if (fname == NULL) { |
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fin = stdin; |
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fname = "<stdin>"; |
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} else if ((fin = fopen(fname, "r")) == NULL) { |
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fprintf(stderr, "%s: Cannot open: %s\n", progname, fname); |
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quit(1); |
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} |
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/* discard header */ |
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while (fgets(sbuf, sizeof(sbuf), fin) != NULL && sbuf[0] != '\n') |
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; |
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/* get picture size */ |
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if (fgets(sbuf, sizeof(sbuf), fin) == NULL || |
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sscanf(sbuf, "-Y %d +X %d\n", &nrows, &ncols) != 2) { |
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fprintf(stderr, "%s: Bad picture size: %s\n", progname, fname); |
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quit(1); |
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} |
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|
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mult = ctab[cftype].hsiz / ncols; |
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if (ctab[cftype].vsiz / nrows < mult) |
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mult = ctab[cftype].vsiz / nrows; |
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|
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if (mult < 1) { |
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fprintf(stderr, "%s: Resolution mismatch: %s\n", |
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progname, fname); |
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quit(1); |
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} |
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if (mult > MAXMULT) |
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mult = MAXMULT; /* maximum element size */ |
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|
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hhome = ctab[cftype].hbeg + (ctab[cftype].hsiz - ncols*mult)/2; |
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vhome = ctab[cftype].vbeg + (ctab[cftype].vsiz - nrows*mult)/2; |
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|
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d_init(); |
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|
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for (i = nrows-1; i >= 0; i--) { |
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if (freadscan(scanline, ncols, fin) < 0) { |
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fprintf(stderr, "%s: Read error in row %d: %s\n", |
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progname, i, fname); |
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quit(1); |
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} |
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scanout(scanline, i); |
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} |
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|
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d_done(); |
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|
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fclose(fin); |
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} |
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|
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|
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d_init() /* set up dicomed, files */ |
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{ |
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char *mktemp(); |
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/* initial condition select */ |
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putw(O_ICS|ctab[cftype].icsfield, stdout); |
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/* configuration code */ |
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putw(O_CONF|ctab[cftype].ccode, stdout); |
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/* select raster mode */ |
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putw(O_ECS|ECS_RAS, stdout); |
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/* color or black and white */ |
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putw(O_ECS|(docolor?ECS_COL:ECS_BW), stdout); |
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/* bypass translation tables */ |
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putw(O_ECS|ECS_BT, stdout); |
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/* point element select */ |
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putw(O_PES|mult<<9|010, stdout); |
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putw(mult<<9|010, stdout); |
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putw(mult<<4|mult, stdout); |
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|
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if (docolor) { /* color output */ |
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/* set up red file */ |
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if (ftab[RED].fn == NULL) |
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ftab[RED].fn = mktemp(TEMPLATE); |
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if ((ftab[RED].fp = fopen(ftab[RED].fn, "w+")) == NULL) { |
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fprintf(stderr, "%s: Cannot open: %s\n", |
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progname, ftab[RED].fn); |
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quit(1); |
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} |
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putw(O_ECS|ECS_RED, ftab[RED].fp); /* red filter */ |
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putw(O_VPA, ftab[RED].fp); /* home */ |
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putw(hhome<<3, ftab[RED].fp); |
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putw(vhome<<3, ftab[RED].fp); |
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/* set up green file */ |
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ftab[GRN].fp = stdout; |
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putw(O_ECS|ECS_GRN, ftab[GRN].fp); /* green filter */ |
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putw(O_VPA, ftab[GRN].fp); /* home */ |
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putw(hhome<<3, ftab[GRN].fp); |
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putw(vhome<<3, ftab[GRN].fp); |
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/* set up blue file */ |
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if (ftab[BLU].fn == NULL) |
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ftab[BLU].fn = mktemp(TEMPLATE); |
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if ((ftab[BLU].fp = fopen(ftab[BLU].fn, "w+")) == NULL) { |
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fprintf(stderr, "%s: Cannot open: %s\n", |
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progname, ftab[BLU].fn); |
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quit(1); |
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} |
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putw(O_ECS|ECS_BLU, ftab[BLU].fp); /* blue filter */ |
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putw(O_VPA, ftab[BLU].fp); /* home */ |
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putw(hhome<<3, ftab[BLU].fp); |
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putw(vhome<<3, ftab[BLU].fp); |
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|
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} else { /* black and white */ |
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ftab[NEU].fp = stdout; |
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putw(O_ECS|ECS_NEU, ftab[NEU].fp); /* neutral filter */ |
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putw(O_VPA, ftab[NEU].fp); /* home */ |
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putw(hhome<<3, ftab[NEU].fp); |
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putw(vhome<<3, ftab[NEU].fp); |
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} |
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} |
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|
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|
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scanout(scan, y) /* output scan line */ |
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COLOR *scan; |
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int y; |
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{ |
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int i; |
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/* uses horiz. flyback */ |
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if (docolor) |
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for (i = 0; i < 3; i++) |
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runlength(scan, i); |
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else |
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runlength(scan, NEU); |
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} |
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|
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|
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d_done() /* flush files, finish frame */ |
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{ |
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if (docolor) { |
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transfer(ftab[RED].fp, stdout); |
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transfer(ftab[BLU].fp, stdout); |
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} |
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putw(O_ECS|ECS_FA, stdout); /* film advance */ |
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fflush(stdout); |
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if (ferror(stdout)) { |
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fprintf(stderr, "%s: Write error: <stdout>\n", progname); |
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quit(1); |
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} |
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} |
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|
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|
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runlength(scan, f) /* do scanline for filter f */ |
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COLOR *scan; |
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int f; |
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{ |
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double mapfilter(); |
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BYTE ebuf[2*HSIZE]; |
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register int j; |
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register BYTE *ep; |
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|
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ep = ebuf; |
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ep[0] = mapfilter(scan[0], f) * 255.9999; |
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ep[1] = 1; |
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ep += 2; |
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for (j = 1; j < ncols; j++) { |
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ep[0] = mapfilter(scan[j], f) * 255.9999; |
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if (ep[0] == ep[-2] && ep[-1] < 255) |
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ep[-1]++; |
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else { |
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ep[1] = 1; |
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ep += 2; |
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} |
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} |
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j = ep - ebuf; |
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putw(O_FES, ftab[f].fp); |
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putw(FES_RL|j>>1, ftab[f].fp); |
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for (ep = ebuf; j-- > 0; ep++) |
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putc(*ep, ftab[f].fp); |
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|
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if (ferror(ftab[f].fp)) { |
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fprintf(stderr, "%s: Write error: %s\n", progname, |
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ftab[f].fn==NULL ? "<stdout>" : ftab[f].fn); |
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quit(1); |
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} |
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} |
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|
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|
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double |
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mapfilter(col, f) /* map filter value */ |
| 381 |
COLOR col; |
| 382 |
register int f; |
| 383 |
{ |
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static float *mp[4] = {neumap, neumap, neumap, neumap}; |
| 385 |
double x, y; |
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|
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y = f_val(col,f); |
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|
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if (y >= 1.0) |
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return(1.0); |
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|
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while (y >= mp[f][2]) |
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mp[f] += 2; |
| 394 |
while (y < mp[f][0]) |
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mp[f] -= 2; |
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|
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x = (y - mp[f][0]) / (mp[f][2] - mp[f][0]); |
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|
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return((1.0-x)*mp[f][1] + x*mp[f][3]); |
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} |
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|
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|
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putw(w, fp) /* output a (short) word */ |
| 404 |
int w; |
| 405 |
register FILE *fp; |
| 406 |
{ |
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putc(w&0377, fp); /* in proper order! */ |
| 408 |
putc(w>>8, fp); |
| 409 |
} |
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|
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|
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transfer(fin, fout) /* transfer fin contents to fout, close fin */ |
| 413 |
register FILE *fin, *fout; |
| 414 |
{ |
| 415 |
register int c; |
| 416 |
|
| 417 |
fseek(fin, 0L, 0); /* rewind input */ |
| 418 |
|
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while ((c = getc(fin)) != EOF) /* transfer file */ |
| 420 |
putc(c, fout); |
| 421 |
|
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fclose(fin); /* close input */ |
| 423 |
} |
