src/px/oki20c.c

/* Copyright (c) 1991 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"
#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

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

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

#ifdef  BSD
#define  clearlbuf()    bzero((char *)lpat, sizeof(lpat))
#else
#define  clearlbuf()    (void)memset((char *)lpat, 0, sizeof(lpat))
#endif

long  lpat[NCOLS][3];

int  dofilter = 0;              /* filter through pfilt first? */


main(argc, argv)
int  argc;
char  *argv[];
{
        int  i, status = 0;
        
        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)
                        fname = "";
                sprintf(buf, FILTER, fname);
                if ((input = popen(buf, "r")) == NULL) {
                        fprintf(stderr, "Cannot execute: %s\n", buf);
                        return(-1);
                }
                fname = buf;
        } 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 || yres > NROWS) {
                fprintf(stderr, "%s: resolution mismatch\n", fname);
                return(-1);
        }
                                /* set line spacing (overlap for knitting) */
        fputs("\0333\042", stdout);
                                /* clear line buffer */
        clearlbuf();
#ifdef _IOLBF
        stdout->_flag &= ~_IOLBF;
#endif
                                /* 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;
        register long  c;
        register int  i, j;

        if (bpos = y % 23) {

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


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, errp;
        register int  a, ison;

        a = sub_add(s);                 /* use additive primary */
        b = col[a];
        errp = err[a];
        err[a] += b + cerr[x][a];
        ison = err[a] < 128;
        if (!ison) err[a] -= 256;
        err[a] /= 3;
        cerr[x][a] = err[a] + errp;
        return(ison);
}
Revision:	2.3
Committed:	Wed Jan 29 15:18:20 1992 UTC (32 years, 3 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.2:	+29 -2 lines
Log Message:	added -p option for prefiltering and removed line buffering
#	User	Rev	Content
1	greg	1.12	/* Copyright (c) 1991 Regents of the University of California */
2	greg	1.1
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	greg	1.12	#include "resolu.h"
17	greg	1.1
18			#define NROWS 1440 /* 10" at 144 dpi */
19			#define NCOLS 960 /* 8" at 120 dpi */
20
21	greg	2.3	#define ASPECT (120./144.) /* pixel aspect ratio */
22
23			#define FILTER "pfilt -1 -x %d -y %d -p %f %s",NCOLS,NROWS,ASPECT
24
25	greg	1.1	/*
26			* Subtractive primaries are ordered: Yellow, Magenta, Cyan.
27			*/
28
29			#define sub_add(sub) (2-(sub)) /* map subtractive to additive pri. */
30
31	greg	1.9	#ifdef BSD
32			#define clearlbuf() bzero((char *)lpat, sizeof(lpat))
33			#else
34			#define clearlbuf() (void)memset((char *)lpat, 0, sizeof(lpat))
35			#endif
36	greg	1.1
37	greg	1.9	long lpat[NCOLS][3];
38
39	greg	2.3	int dofilter = 0; /* filter through pfilt first? */
40	greg	1.9
41	greg	2.3
42	greg	1.1	main(argc, argv)
43			int argc;
44			char *argv[];
45			{
46			int i, status = 0;
47
48	greg	2.3	if (argc > 1 && !strcmp(argv[1], "-p")) {
49			dofilter++;
50			argv++; argc--;
51			}
52	greg	1.1	if (argc < 2)
53			status = printp(NULL) == -1;
54			else
55			for (i = 1; i < argc; i++)
56			status += printp(argv[i]) == -1;
57			exit(status);
58			}
59
60
61			printp(fname) /* print a picture */
62			char *fname;
63			{
64	greg	2.3	char buf[64];
65	greg	1.1	FILE *input;
66			int xres, yres;
67	greg	1.6	COLR scanline[NCOLS];
68	greg	1.1	int i;
69
70	greg	2.3	if (dofilter) {
71			if (fname == NULL)
72			fname = "";
73			sprintf(buf, FILTER, fname);
74			if ((input = popen(buf, "r")) == NULL) {
75			fprintf(stderr, "Cannot execute: %s\n", buf);
76			return(-1);
77			}
78			fname = buf;
79			} else if (fname == NULL) {
80	greg	1.1	input = stdin;
81			fname = "<stdin>";
82			} else if ((input = fopen(fname, "r")) == NULL) {
83			fprintf(stderr, "%s: cannot open\n", fname);
84			return(-1);
85			}
86			/* discard header */
87	greg	1.10	if (checkheader(input, COLRFMT, NULL) < 0) {
88			fprintf(stderr, "%s: not a Radiance picture\n", fname);
89			return(-1);
90			}
91	greg	1.1	/* get picture dimensions */
92	greg	1.12	if (fgetresolu(&xres, &yres, input) < 0) {
93	greg	1.1	fprintf(stderr, "%s: bad picture size\n", fname);
94			return(-1);
95			}
96			if (xres > NCOLS \|\| yres > NROWS) {
97			fprintf(stderr, "%s: resolution mismatch\n", fname);
98			return(-1);
99			}
100	greg	1.3	/* set line spacing (overlap for knitting) */
101	greg	1.5	fputs("\0333\042", stdout);
102	greg	1.9	/* clear line buffer */
103			clearlbuf();
104	greg	2.3	#ifdef _IOLBF
105			stdout->_flag &= ~_IOLBF;
106			#endif
107	greg	1.3	/* put out scanlines */
108	greg	1.1	for (i = yres-1; i >= 0; i--) {
109	greg	1.6	if (freadcolrs(scanline, xres, input) < 0) {
110	greg	1.1	fprintf(stderr, "%s: read error (y=%d)\n", fname, i);
111			return(-1);
112			}
113	greg	1.8	normcolrs(scanline, xres, 0);
114	greg	1.1	plotscan(scanline, xres, i);
115			}
116	greg	1.3	/* advance page */
117	greg	1.1	putchar('\f');
118
119	greg	2.3	if (dofilter)
120			pclose(input);
121			else
122			fclose(input);
123	greg	1.1
124			return(0);
125	greg	1.6	}
126
127
128	greg	1.1	plotscan(scan, len, y) /* plot a scanline */
129	greg	1.6	COLR scan[];
130	greg	1.1	int len;
131			int y;
132			{
133			int bpos;
134			register long c;
135			register int i, j;
136
137	greg	1.5	if (bpos = y % 23) {
138	greg	1.1
139	greg	1.5	for (j = 0; j < 3; j++)
140			for (i = 0; i < len; i++)
141	greg	1.9	lpat[i][j] \|= (long)colbit(scan[i],i,j) << bpos;
142	greg	1.1
143			} else {
144
145			fputs("\033\031", stdout);
146
147			for (j = 0; j < 3; j++) {
148			fputs("\033%O", stdout);
149	greg	1.5	putchar(len & 255);
150	greg	1.1	putchar(len >> 8);
151			for (i = 0; i < len; i++) {
152	greg	1.9	c = lpat[i][j] \| colbit(scan[i],i,j);
153	greg	1.5	/* repeat this row */
154	greg	1.9	lpat[i][j] = (c & 1) << 23;
155	greg	1.5	putchar(c>>16);
156			putchar(c>>8 & 255);
157			putchar(c & 255);
158	greg	1.1	}
159			putchar('\r');
160			}
161			putchar('\n');
162	greg	2.3	fflush(stdout);
163	greg	1.1	}
164			}
165
166
167			colbit(col, x, s) /* determine bit value for primary at x */
168	greg	1.6	COLR col;
169	greg	1.1	register int x;
170			int s;
171			{
172	greg	1.6	static int cerr[NCOLS][3];
173	greg	2.2	static int err[3];
174			int b, errp;
175	greg	1.1	register int a, ison;
176
177			a = sub_add(s); /* use additive primary */
178	greg	1.6	b = col[a];
179	greg	2.2	errp = err[a];
180	greg	1.1	err[a] += b + cerr[x][a];
181	greg	1.6	ison = err[a] < 128;
182			if (!ison) err[a] -= 256;
183	greg	1.11	err[a] /= 3;
184	greg	2.2	cerr[x][a] = err[a] + errp;
185	greg	1.1	return(ison);
186			}