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- /* Copyright (c) 1992 Regents of the University of California */
-
- #ifndef lint
- static char SCCSid[] = "@(#)oki20.c 2.5 7/3/92 LBL";
- #endif
-
- /*
- * oki20c.c - program to dump pixel file to OkiMate 20 color printer.
- */
-
- #include <stdio.h>
- #ifdef MSDOS
- #include <fcntl.h>
- #endif
-
- #include "color.h"
- #include "resolu.h"
-
- #define NROWS 1440 /* 10" at 144 dpi */
- #define NCOLS 960 /* 8" at 120 dpi */
-
- #define ASPECT (120./144.) /* pixel aspect ratio */
-
- #define FILTER "pfilt -1 -x %d -y %d -p %f %s",NCOLS,NROWS,ASPECT
-
- long lpat[NCOLS];
-
- int dofilter = 0; /* filter through pfilt first? */
-
- extern FILE *popen();
-
-
- main(argc, argv)
- int argc;
- char *argv[];
- {
- int i, status = 0;
- #ifdef MSDOS
- extern int _fmode;
- _fmode = O_BINARY;
- setmode(fileno(stdin), O_BINARY);
- setmode(fileno(stdout), O_BINARY);
- #endif
- if (argc > 1 && !strcmp(argv[1], "-p")) {
- dofilter++;
- argv++; argc--;
- }
- #ifdef _IOLBF
- stdout->_flag &= ~_IOLBF;
- #endif
- if (argc < 2)
- status = printp(NULL) == -1;
- else
- for (i = 1; i < argc; i++)
- status += printp(argv[i]) == -1;
- exit(status);
- }
-
-
- printp(fname) /* print a picture */
- char *fname;
- {
- char buf[64];
- FILE *input;
- int xres, yres;
- COLR scanline[NCOLS];
- int i;
-
- if (dofilter) {
- if (fname == NULL) {
- sprintf(buf, FILTER, "");
- fname = "<stdin>";
- } else
- sprintf(buf, FILTER, fname);
- if ((input = popen(buf, "r")) == NULL) {
- fprintf(stderr, "Cannot execute: %s\n", buf);
- return(-1);
- }
- } else if (fname == NULL) {
- input = stdin;
- fname = "<stdin>";
- } else if ((input = fopen(fname, "r")) == NULL) {
- fprintf(stderr, "%s: cannot open\n", fname);
- return(-1);
- }
- /* discard header */
- if (checkheader(input, COLRFMT, NULL) < 0) {
- fprintf(stderr, "%s: not a Radiance picture\n", fname);
- return(-1);
- }
- /* get picture dimensions */
- if (fgetresolu(&xres, &yres, input) < 0) {
- fprintf(stderr, "%s: bad picture size\n", fname);
- return(-1);
- }
- if (xres > NCOLS) {
- fprintf(stderr, "%s: resolution mismatch\n", fname);
- return(-1);
- }
- /* set line spacing (overlap for knitting) */
- fputs("\0333\042\022", stdout);
- /* put out scanlines */
- for (i = yres-1; i >= 0; i--) {
- if (freadcolrs(scanline, xres, input) < 0) {
- fprintf(stderr, "%s: read error (y=%d)\n", fname, i);
- return(-1);
- }
- normcolrs(scanline, xres, 0);
- plotscan(scanline, xres, i);
- }
- /* advance page */
- putchar('\f');
-
- if (dofilter)
- pclose(input);
- else
- fclose(input);
-
- return(0);
- }
-
-
- plotscan(scan, len, y) /* plot a scanline */
- COLR scan[];
- int len;
- int y;
- {
- int bpos, start, end;
- register long c;
- register int i;
-
- bpos = y % 23;
- for (i = 0; i < len; i++)
- lpat[i] |= (long)bit(scan[i],i) << bpos;
-
- if (bpos)
- return;
- /* find limits of non-zero print buffer */
- for (i = 0; lpat[i] == 0; i++)
- if (i == len-1) {
- putchar('\n');
- return;
- }
- start = i - i%12;
- i = len;
- while (lpat[--i] == 0)
- ;
- end = i;
- /* skip to start position */
- for (i = start/12; i-- > 0; )
- putchar(' ');
- /* print non-zero portion of buffer */
- fputs("\033%O", stdout);
- i = end+1-start;
- putchar(i & 255);
- putchar(i >> 8);
- for (i = start; i <= end; i++) {
- c = lpat[i];
- putchar((int)(c>>16));
- putchar((int)(c>>8 & 255));
- putchar((int)(c & 255));
- if (y) /* repeat this row next time */
- lpat[i] = (c & 1) << 23;
- else /* or clear for next image */
- lpat[i] = 0L;
- }
- putchar('\r');
- putchar('\n');
- fflush(stdout);
- }
-
-
- bit(col, x) /* determine bit value for pixel at x */
- COLR col;
- register int x;
- {
- static int cerr[NCOLS];
- static int err;
- int b, errp;
- register int ison;
-
- b = normbright(col);
- errp = err;
- err += b + cerr[x];
- ison = err < 128;
- if (!ison) err -= 256;
- err /= 3;
- cerr[x] = err + errp;
- return(ison);
- }
-