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/* Copyright (c) 1992 Regents of the University of California */ |
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|
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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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/* |
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* oki20c.c - program to dump pixel file to OkiMate 20 color printer. |
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*/ |
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|
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#include <stdio.h> |
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|
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#include "color.h" |
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#include "resolu.h" |
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|
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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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|
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#define ASPECT (120./144.) /* pixel aspect ratio */ |
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|
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#define FILTER "pfilt -1 -x %d -y %d -p %f %s",NCOLS,NROWS,ASPECT |
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|
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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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|
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long lpat[NCOLS]; |
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|
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int dofilter = 0; /* filter through pfilt first? */ |
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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 i, status = 0; |
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|
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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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|
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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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|
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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, 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\022", 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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|
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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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|
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return(0); |
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} |
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|
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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, start, end; |
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register long c; |
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register int i; |
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|
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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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|
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if (bpos) |
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return; |
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/* find limits of non-zero print buffer */ |
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for (i = 0; lpat[i] == 0; i++) |
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if (i == len-1) { |
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putchar('\n'); |
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return; |
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} |
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start = i - i%12; |
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i = len; |
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while (lpat[--i] == 0) |
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; |
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end = i; |
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/* skip to start position */ |
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for (i = start/12; i-- > 0; ) |
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putchar(' '); |
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/* print non-zero portion of buffer */ |
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fputs("\033%O", stdout); |
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i = end+1-start; |
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putchar(i & 255); |
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putchar(i >> 8); |
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for (i = start; i <= end; i++) { |
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c = lpat[i]; |
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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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/* repeat this row next time */ |
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lpat[i] = (c & 1) << 23; |
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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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|
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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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|
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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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} |
