src/px/oki20.c

/* Copyright (c) 1992 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  oki20.c - program to dump pixel file to OkiMate 20 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--;
        }
        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);
}
Revision:	2.8
Committed:	Mon Aug 2 14:39:06 1993 UTC (30 years, 9 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.7:	+0 -3 lines
Log Message:	removed questionable line buffer setting
#	User	Rev	Content
1	greg	2.1	/* Copyright (c) 1992 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8	greg	2.7	* oki20.c - program to dump pixel file to OkiMate 20 printer.
9	greg	2.1	*/
10
11			#include <stdio.h>
12	greg	2.6	#ifdef MSDOS
13			#include <fcntl.h>
14			#endif
15	greg	2.1
16			#include "color.h"
17			#include "resolu.h"
18
19	greg	2.6	#define NROWS 1440 /* 10" at 144 dpi */
20			#define NCOLS 960 /* 8" at 120 dpi */
21	greg	2.1
22	greg	2.6	#define ASPECT (120./144.) /* pixel aspect ratio */
23	greg	2.1
24	greg	2.6	#define FILTER "pfilt -1 -x %d -y %d -p %f %s",NCOLS,NROWS,ASPECT
25	greg	2.1
26			long lpat[NCOLS];
27
28			int dofilter = 0; /* filter through pfilt first? */
29
30	greg	2.6	extern FILE *popen();
31	greg	2.1
32	greg	2.6
33	greg	2.1	main(argc, argv)
34			int argc;
35			char *argv[];
36			{
37			int i, status = 0;
38	greg	2.6	#ifdef MSDOS
39			extern int _fmode;
40			_fmode = O_BINARY;
41			setmode(fileno(stdin), O_BINARY);
42			setmode(fileno(stdout), O_BINARY);
43			#endif
44	greg	2.1	if (argc > 1 && !strcmp(argv[1], "-p")) {
45			dofilter++;
46			argv++; argc--;
47			}
48			if (argc < 2)
49			status = printp(NULL) == -1;
50			else
51			for (i = 1; i < argc; i++)
52			status += printp(argv[i]) == -1;
53			exit(status);
54			}
55
56
57			printp(fname) /* print a picture */
58			char *fname;
59			{
60			char buf[64];
61			FILE *input;
62			int xres, yres;
63			COLR scanline[NCOLS];
64			int i;
65
66			if (dofilter) {
67	greg	2.2	if (fname == NULL) {
68			sprintf(buf, FILTER, "");
69			fname = "<stdin>";
70			} else
71			sprintf(buf, FILTER, fname);
72	greg	2.1	if ((input = popen(buf, "r")) == NULL) {
73			fprintf(stderr, "Cannot execute: %s\n", buf);
74			return(-1);
75			}
76			} else if (fname == NULL) {
77			input = stdin;
78			fname = "<stdin>";
79			} else if ((input = fopen(fname, "r")) == NULL) {
80			fprintf(stderr, "%s: cannot open\n", fname);
81			return(-1);
82			}
83			/* discard header */
84			if (checkheader(input, COLRFMT, NULL) < 0) {
85			fprintf(stderr, "%s: not a Radiance picture\n", fname);
86			return(-1);
87			}
88			/* get picture dimensions */
89			if (fgetresolu(&xres, &yres, input) < 0) {
90			fprintf(stderr, "%s: bad picture size\n", fname);
91			return(-1);
92			}
93	greg	2.3	if (xres > NCOLS) {
94	greg	2.1	fprintf(stderr, "%s: resolution mismatch\n", fname);
95			return(-1);
96			}
97			/* set line spacing (overlap for knitting) */
98	greg	2.4	fputs("\0333\042\022", stdout);
99	greg	2.1	/* put out scanlines */
100			for (i = yres-1; i >= 0; i--) {
101			if (freadcolrs(scanline, xres, input) < 0) {
102			fprintf(stderr, "%s: read error (y=%d)\n", fname, i);
103			return(-1);
104			}
105			normcolrs(scanline, xres, 0);
106			plotscan(scanline, xres, i);
107			}
108			/* advance page */
109			putchar('\f');
110
111			if (dofilter)
112			pclose(input);
113			else
114			fclose(input);
115
116			return(0);
117			}
118
119
120			plotscan(scan, len, y) /* plot a scanline */
121			COLR scan[];
122			int len;
123			int y;
124			{
125	greg	2.4	int bpos, start, end;
126	greg	2.1	register long c;
127			register int i;
128
129	greg	2.4	bpos = y % 23;
130			for (i = 0; i < len; i++)
131			lpat[i] \|= (long)bit(scan[i],i) << bpos;
132	greg	2.1
133	greg	2.4	if (bpos)
134			return;
135			/* find limits of non-zero print buffer */
136			for (i = 0; lpat[i] == 0; i++)
137			if (i == len-1) {
138			putchar('\n');
139			return;
140	greg	2.1	}
141	greg	2.4	start = i - i%12;
142			i = len;
143			while (lpat[--i] == 0)
144			;
145			end = i;
146			/* skip to start position */
147			for (i = start/12; i-- > 0; )
148			putchar(' ');
149			/* print non-zero portion of buffer */
150			fputs("\033%O", stdout);
151			i = end+1-start;
152			putchar(i & 255);
153			putchar(i >> 8);
154			for (i = start; i <= end; i++) {
155			c = lpat[i];
156	greg	2.6	putchar((int)(c>>16));
157			putchar((int)(c>>8 & 255));
158			putchar((int)(c & 255));
159	greg	2.5	if (y) /* repeat this row next time */
160			lpat[i] = (c & 1) << 23;
161			else /* or clear for next image */
162			lpat[i] = 0L;
163	greg	2.1	}
164	greg	2.4	putchar('\r');
165			putchar('\n');
166			fflush(stdout);
167	greg	2.1	}
168
169
170			bit(col, x) /* determine bit value for pixel at x */
171			COLR col;
172			register int x;
173			{
174			static int cerr[NCOLS];
175			static int err;
176			int b, errp;
177			register int ison;
178
179			b = normbright(col);
180			errp = err;
181			err += b + cerr[x];
182			ison = err < 128;
183			if (!ison) err -= 256;
184			err /= 3;
185			cerr[x] = err + errp;
186			return(ison);
187			}