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/* Copyright (c) 1992 Regents of the University of California */
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#ifndef lint
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static char SCCSid[] = "$SunId$ LBL";
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#endif
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/*
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* oki20c.c - program to dump pixel file to OkiMate 20 color printer.
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*
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* 6/10/87
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*/
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#include <stdio.h>
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#include "color.h"
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#include "resolu.h"
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#define NROWS 1440 /* 10" at 144 dpi */
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#define NCOLS 960 /* 8" at 120 dpi */
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#define ASPECT (120./144.) /* pixel aspect ratio */
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#define FILTER "pfilt -1 -x %d -y %d -p %f %s",NCOLS,NROWS,ASPECT
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#ifdef BSD
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#define clearlbuf() bzero((char *)lpat, sizeof(lpat))
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#else
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#define clearlbuf() (void)memset((char *)lpat, 0, sizeof(lpat))
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#endif
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long lpat[NCOLS];
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int dofilter = 0; /* filter through pfilt first? */
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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 i, status = 0;
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if (argc > 1 && !strcmp(argv[1], "-p")) {
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dofilter++;
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argv++; argc--;
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}
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#ifdef _IOLBF
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stdout->_flag &= ~_IOLBF;
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#endif
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if (argc < 2)
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status = printp(NULL) == -1;
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else
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for (i = 1; i < argc; i++)
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status += printp(argv[i]) == -1;
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exit(status);
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}
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printp(fname) /* print a picture */
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char *fname;
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{
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char buf[64];
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FILE *input;
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int xres, yres;
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COLR scanline[NCOLS];
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int i;
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if (dofilter) {
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if (fname == NULL)
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fname = "";
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sprintf(buf, FILTER, fname);
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if ((input = popen(buf, "r")) == NULL) {
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fprintf(stderr, "Cannot execute: %s\n", buf);
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return(-1);
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}
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fname = buf;
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} else if (fname == NULL) {
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input = stdin;
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fname = "<stdin>";
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} else if ((input = fopen(fname, "r")) == NULL) {
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fprintf(stderr, "%s: cannot open\n", fname);
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return(-1);
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}
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/* discard header */
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if (checkheader(input, COLRFMT, NULL) < 0) {
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fprintf(stderr, "%s: not a Radiance picture\n", fname);
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return(-1);
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}
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/* get picture dimensions */
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if (fgetresolu(&xres, &yres, input) < 0) {
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fprintf(stderr, "%s: bad picture size\n", fname);
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return(-1);
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}
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if (xres > NCOLS || yres > NROWS) {
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fprintf(stderr, "%s: resolution mismatch\n", fname);
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return(-1);
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}
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/* set line spacing (overlap for knitting) */
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fputs("\0333\042", stdout);
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/* clear line buffer */
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clearlbuf();
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/* put out scanlines */
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for (i = yres-1; i >= 0; i--) {
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if (freadcolrs(scanline, xres, input) < 0) {
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fprintf(stderr, "%s: read error (y=%d)\n", fname, i);
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return(-1);
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}
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normcolrs(scanline, xres, 0);
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plotscan(scanline, xres, i);
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}
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/* advance page */
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putchar('\f');
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if (dofilter)
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pclose(input);
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else
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fclose(input);
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return(0);
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}
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plotscan(scan, len, y) /* plot a scanline */
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COLR scan[];
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int len;
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int y;
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{
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int bpos;
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register long c;
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register int i;
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if (bpos = y % 23) {
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for (i = 0; i < len; i++)
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lpat[i] |= (long)bit(scan[i],i) << bpos;
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} else {
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fputs("\033%O", stdout);
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putchar(len & 255);
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putchar(len >> 8);
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for (i = 0; i < len; i++) {
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c = lpat[i] | bit(scan[i],i);
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/* repeat this row */
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lpat[i] = (c & 1) << 23;
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putchar(c>>16);
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putchar(c>>8 & 255);
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putchar(c & 255);
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}
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putchar('\r');
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putchar('\n');
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fflush(stdout);
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}
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}
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bit(col, x) /* determine bit value for pixel at x */
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COLR col;
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register int x;
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{
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static int cerr[NCOLS];
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static int err;
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int b, errp;
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register int ison;
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b = normbright(col);
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errp = err;
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err += b + cerr[x];
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ison = err < 128;
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if (!ison) err -= 256;
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err /= 3;
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cerr[x] = err + errp;
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return(ison);
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}
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