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#ifndef lint
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static const char RCSid[] = "$Id: oki20c.c,v 2.15 2003/11/10 12:28:56 schorsch Exp $";
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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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#include <stdio.h>
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#include <time.h>
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#include "platform.h"
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#include "rtprocess.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",NCOLS,NROWS,ASPECT
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#define FILTER_F "pfilt -1 -x %d -y %d -p %f \"%s\"",NCOLS,NROWS,ASPECT
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/*
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* Subtractive primaries are ordered: Yellow, Magenta, Cyan.
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*/
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#define sub_add(sub) (2-(sub)) /* map subtractive to additive pri. */
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long lpat[NCOLS][3];
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int dofilter = 0; /* filter through pfilt first? */
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static int printp(char *fname);
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static void plotscan(COLR scan[], int len, int y);
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static int colbit(COLR col, int x, int s);
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int
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main(
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int argc,
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char *argv[]
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)
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{
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int i, status = 0;
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SET_DEFAULT_BINARY();
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SET_FILE_BINARY(stdin);
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SET_FILE_BINARY(stdout);
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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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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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static int
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printp( /* print a picture */
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char *fname
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)
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{
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char buf[PATH_MAX];
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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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sprintf(buf, FILTER);
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fname = "<stdin>";
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} else
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sprintf(buf, FILTER_F, 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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} 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) {
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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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/* 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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static void
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plotscan( /* 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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{
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int bpos;
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register long c;
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register int i, j;
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if ( (bpos = y % 23) ) {
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for (j = 0; j < 3; j++)
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for (i = 0; i < len; i++)
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lpat[i][j] |= (long)colbit(scan[i],i,j) << bpos;
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return;
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}
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fputs("\033\031", stdout);
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for (j = 0; j < 3; j++) {
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i = (NCOLS + len)/2; /* center image */
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fputs("\033%O", stdout);
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putchar(i & 255);
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putchar(i >> 8);
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while (i-- > len) {
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putchar(0);
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putchar(0);
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putchar(0);
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}
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for (i = 0; i < len; i++) {
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c = lpat[i][j] | colbit(scan[i],i,j);
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putchar((int)(c>>16));
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putchar((int)(c>>8 & 255));
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putchar((int)(c & 255));
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if (y) /* repeat this row */
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lpat[i][j] = (c & 1) << 23;
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else /* or clear for next image */
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lpat[i][j] = 0L;
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}
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putchar('\r');
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}
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putchar('\n');
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fflush(stdout);
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}
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static int
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colbit( /* determine bit value for primary at x */
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COLR col,
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register int x,
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int s
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)
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{
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static int cerr[NCOLS][3];
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static int err[3];
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int b, errp;
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register int a, ison;
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a = sub_add(s); /* use additive primary */
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b = col[a];
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errp = err[a];
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err[a] += b + cerr[x][a];
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ison = err[a] < 128;
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if (!ison) err[a] -= 256;
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err[a] /= 3;
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cerr[x][a] = err[a] + errp;
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return(ison);
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}
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