src/px/oki20c.c

/* Copyright (c) 1986 Regents of the University of California */

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

/*
 *  oki20c.c - program to dump pixel file to OkiMate 20 color printer.
 *
 *     6/10/87
 */

#include  <stdio.h>

#include  "color.h"


#define  NROWS          1440            /* 10" at 144 dpi */
#define  NCOLS          960             /* 8" at 120 dpi */

/*
 *  Subtractive primaries are ordered:  Yellow, Magenta, Cyan.
 */

#define  sub_add(sub)   (2-(sub))       /* map subtractive to additive pri. */


main(argc, argv)
int  argc;
char  *argv[];
{
        int  i, status = 0;
        
        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;
{
        FILE  *input;
        int  xres, yres;
        COLR  scanline[NCOLS];
        int  i;

        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 */
        getheader(input, NULL);
                                /* get picture dimensions */
        if (fgetresolu(&xres, &yres, input) != (YMAJOR|YDECR)) {
                fprintf(stderr, "%s: bad picture size\n", fname);
                return(-1);
        }
        if (xres > NCOLS || yres > NROWS) {
                fprintf(stderr, "%s: resolution mismatch\n", fname);
                return(-1);
        }
                                /* set line spacing (overlap for knitting) */
        fputs("\0333\042", 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');
        
        fclose(input);

        return(0);
}


plotscan(scan, len, y)                  /* plot a scanline */
COLR  scan[];
int  len;
int  y;
{
        static long  pat[NCOLS][3];
        int  bpos;
        register long  c;
        register int  i, j;

        if (bpos = y % 23) {

                for (j = 0; j < 3; j++)
                        for (i = 0; i < len; i++)
                                pat[i][j] |= (long)colbit(scan[i],i,j) << bpos;

        } else {

                fputs("\033\031", stdout);

                for (j = 0; j < 3; j++) {
                        fputs("\033%O", stdout);
                        putchar(len & 255);
                        putchar(len >> 8);
                        for (i = 0; i < len; i++) {
                                c = pat[i][j] | colbit(scan[i],i,j);
                                                        /* repeat this row */
                                pat[i][j] = (c & 1) << 23;
                                putchar(c>>16);
                                putchar(c>>8 & 255);
                                putchar(c & 255);
                        }
                        putchar('\r');
                }
                putchar('\n');
        }
}


colbit(col, x, s)               /* determine bit value for primary at x */
COLR  col;
register int  x;
int  s;
{
        static int  cerr[NCOLS][3];
        static int  err[3];
        int  b;
        register int  a, ison;

        a = sub_add(s);                 /* use additive primary */
        b = col[a];
        err[a] += b + cerr[x][a];
        ison = err[a] < 128;
        if (!ison) err[a] -= 256;
        cerr[x][a] = err[a] /= 2;
        return(ison);
}
Revision:	1.8
Committed:	Fri Jan 26 08:17:33 1990 UTC (34 years, 3 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.7:	+1 -1 lines
Log Message:	added scale factor to normcolrs()
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1986 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* oki20c.c - program to dump pixel file to OkiMate 20 color printer.
9			*
10			* 6/10/87
11			*/
12
13			#include <stdio.h>
14
15			#include "color.h"
16
17
18			#define NROWS 1440 /* 10" at 144 dpi */
19			#define NCOLS 960 /* 8" at 120 dpi */
20
21			/*
22			* Subtractive primaries are ordered: Yellow, Magenta, Cyan.
23			*/
24
25			#define sub_add(sub) (2-(sub)) /* map subtractive to additive pri. */
26
27
28			main(argc, argv)
29			int argc;
30			char *argv[];
31			{
32			int i, status = 0;
33
34			if (argc < 2)
35			status = printp(NULL) == -1;
36			else
37			for (i = 1; i < argc; i++)
38			status += printp(argv[i]) == -1;
39			exit(status);
40			}
41
42
43			printp(fname) /* print a picture */
44			char *fname;
45			{
46			FILE *input;
47			int xres, yres;
48	greg	1.6	COLR scanline[NCOLS];
49	greg	1.1	int i;
50
51			if (fname == NULL) {
52			input = stdin;
53			fname = "<stdin>";
54			} else if ((input = fopen(fname, "r")) == NULL) {
55			fprintf(stderr, "%s: cannot open\n", fname);
56			return(-1);
57			}
58			/* discard header */
59			getheader(input, NULL);
60			/* get picture dimensions */
61	greg	1.2	if (fgetresolu(&xres, &yres, input) != (YMAJOR\|YDECR)) {
62	greg	1.1	fprintf(stderr, "%s: bad picture size\n", fname);
63			return(-1);
64			}
65			if (xres > NCOLS \|\| yres > NROWS) {
66			fprintf(stderr, "%s: resolution mismatch\n", fname);
67			return(-1);
68			}
69	greg	1.3	/* set line spacing (overlap for knitting) */
70	greg	1.5	fputs("\0333\042", stdout);
71	greg	1.3	/* put out scanlines */
72	greg	1.1	for (i = yres-1; i >= 0; i--) {
73	greg	1.6	if (freadcolrs(scanline, xres, input) < 0) {
74	greg	1.1	fprintf(stderr, "%s: read error (y=%d)\n", fname, i);
75			return(-1);
76			}
77	greg	1.8	normcolrs(scanline, xres, 0);
78	greg	1.1	plotscan(scanline, xres, i);
79			}
80	greg	1.3	/* advance page */
81	greg	1.1	putchar('\f');
82
83			fclose(input);
84
85			return(0);
86	greg	1.6	}
87
88
89	greg	1.1	plotscan(scan, len, y) /* plot a scanline */
90	greg	1.6	COLR scan[];
91	greg	1.1	int len;
92			int y;
93			{
94			static long pat[NCOLS][3];
95			int bpos;
96			register long c;
97			register int i, j;
98
99	greg	1.5	if (bpos = y % 23) {
100	greg	1.1
101	greg	1.5	for (j = 0; j < 3; j++)
102			for (i = 0; i < len; i++)
103			pat[i][j] \|= (long)colbit(scan[i],i,j) << bpos;
104	greg	1.1
105			} else {
106
107			fputs("\033\031", stdout);
108
109			for (j = 0; j < 3; j++) {
110			fputs("\033%O", stdout);
111	greg	1.5	putchar(len & 255);
112	greg	1.1	putchar(len >> 8);
113			for (i = 0; i < len; i++) {
114	greg	1.5	c = pat[i][j] \| colbit(scan[i],i,j);
115			/* repeat this row */
116			pat[i][j] = (c & 1) << 23;
117			putchar(c>>16);
118			putchar(c>>8 & 255);
119			putchar(c & 255);
120	greg	1.1	}
121			putchar('\r');
122			}
123			putchar('\n');
124			}
125			}
126
127
128			colbit(col, x, s) /* determine bit value for primary at x */
129	greg	1.6	COLR col;
130	greg	1.1	register int x;
131			int s;
132			{
133	greg	1.6	static int cerr[NCOLS][3];
134			static int err[3];
135			int b;
136	greg	1.1	register int a, ison;
137
138			a = sub_add(s); /* use additive primary */
139	greg	1.6	b = col[a];
140	greg	1.1	err[a] += b + cerr[x][a];
141	greg	1.6	ison = err[a] < 128;
142			if (!ison) err[a] -= 256;
143			cerr[x][a] = err[a] /= 2;
144	greg	1.1	return(ison);
145			}