src/px/oki20c.c

/* Copyright (c) 1992 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.
 */

#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. */

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--;
        }
#ifdef _IOLBF
        stdout->_flag &= ~_IOLBF;
#endif
        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", 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;
        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;
                return;
        }
        fputs("\033\031", stdout);

        for (j = 0; j < 3; j++) {
                i = (NCOLS + len)/2;            /* center image */
                fputs("\033%O", stdout);
                putchar(i & 255);
                putchar(i >> 8);
                while (i-- > len) {
                        putchar(0);
                        putchar(0);
                        putchar(0);
                }
                for (i = 0; i < len; i++) {
                        c = lpat[i][j] | colbit(scan[i],i,j);
                        putchar(c>>16);
                        putchar(c>>8 & 255);
                        putchar(c & 255);
                        if (y)                  /* repeat this row */
                                lpat[i][j] = (c & 1) << 23;
                        else                    /* or clear for next image */
                                lpat[i][j] = 0L;
                }
                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:	2.8
Committed:	Fri Jul 3 10:46:25 1992 UTC (31 years, 10 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.7:	+25 -35 lines
Log Message:	slight improvement in clearing of new print buffer
#	User	Rev	Content
1	greg	2.8	/* Copyright (c) 1992 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
11			#include <stdio.h>
12
13			#include "color.h"
14	greg	1.12	#include "resolu.h"
15	greg	1.1
16			#define NROWS 1440 /* 10" at 144 dpi */
17			#define NCOLS 960 /* 8" at 120 dpi */
18
19	greg	2.3	#define ASPECT (120./144.) /* pixel aspect ratio */
20
21			#define FILTER "pfilt -1 -x %d -y %d -p %f %s",NCOLS,NROWS,ASPECT
22
23	greg	1.1	/*
24			* Subtractive primaries are ordered: Yellow, Magenta, Cyan.
25			*/
26
27			#define sub_add(sub) (2-(sub)) /* map subtractive to additive pri. */
28
29	greg	1.9	long lpat[NCOLS][3];
30
31	greg	2.3	int dofilter = 0; /* filter through pfilt first? */
32	greg	1.9
33	greg	2.3
34	greg	1.1	main(argc, argv)
35			int argc;
36			char *argv[];
37			{
38			int i, status = 0;
39
40	greg	2.3	if (argc > 1 && !strcmp(argv[1], "-p")) {
41			dofilter++;
42			argv++; argc--;
43			}
44	greg	2.5	#ifdef _IOLBF
45			stdout->_flag &= ~_IOLBF;
46			#endif
47	greg	1.1	if (argc < 2)
48			status = printp(NULL) == -1;
49			else
50			for (i = 1; i < argc; i++)
51			status += printp(argv[i]) == -1;
52			exit(status);
53			}
54
55
56			printp(fname) /* print a picture */
57			char *fname;
58			{
59	greg	2.3	char buf[64];
60	greg	1.1	FILE *input;
61			int xres, yres;
62	greg	1.6	COLR scanline[NCOLS];
63	greg	1.1	int i;
64
65	greg	2.3	if (dofilter) {
66	greg	2.6	if (fname == NULL) {
67			sprintf(buf, FILTER, "");
68			fname = "<stdin>";
69			} else
70			sprintf(buf, FILTER, fname);
71	greg	2.3	if ((input = popen(buf, "r")) == NULL) {
72			fprintf(stderr, "Cannot execute: %s\n", buf);
73			return(-1);
74			}
75			} else if (fname == NULL) {
76	greg	1.1	input = stdin;
77			fname = "<stdin>";
78			} else if ((input = fopen(fname, "r")) == NULL) {
79			fprintf(stderr, "%s: cannot open\n", fname);
80			return(-1);
81			}
82			/* discard header */
83	greg	1.10	if (checkheader(input, COLRFMT, NULL) < 0) {
84			fprintf(stderr, "%s: not a Radiance picture\n", fname);
85			return(-1);
86			}
87	greg	1.1	/* get picture dimensions */
88	greg	1.12	if (fgetresolu(&xres, &yres, input) < 0) {
89	greg	1.1	fprintf(stderr, "%s: bad picture size\n", fname);
90			return(-1);
91			}
92	greg	2.7	if (xres > NCOLS) {
93	greg	1.1	fprintf(stderr, "%s: resolution mismatch\n", fname);
94			return(-1);
95			}
96	greg	1.3	/* set line spacing (overlap for knitting) */
97	greg	1.5	fputs("\0333\042", stdout);
98	greg	1.3	/* put out scanlines */
99	greg	1.1	for (i = yres-1; i >= 0; i--) {
100	greg	1.6	if (freadcolrs(scanline, xres, input) < 0) {
101	greg	1.1	fprintf(stderr, "%s: read error (y=%d)\n", fname, i);
102			return(-1);
103			}
104	greg	1.8	normcolrs(scanline, xres, 0);
105	greg	1.1	plotscan(scanline, xres, i);
106			}
107	greg	1.3	/* advance page */
108	greg	1.1	putchar('\f');
109
110	greg	2.3	if (dofilter)
111			pclose(input);
112			else
113			fclose(input);
114	greg	1.1
115			return(0);
116	greg	1.6	}
117
118
119	greg	1.1	plotscan(scan, len, y) /* plot a scanline */
120	greg	1.6	COLR scan[];
121	greg	1.1	int len;
122			int y;
123			{
124			int bpos;
125			register long c;
126			register int i, j;
127
128	greg	1.5	if (bpos = y % 23) {
129	greg	1.1
130	greg	1.5	for (j = 0; j < 3; j++)
131			for (i = 0; i < len; i++)
132	greg	1.9	lpat[i][j] \|= (long)colbit(scan[i],i,j) << bpos;
133	greg	2.8	return;
134			}
135			fputs("\033\031", stdout);
136	greg	1.1
137	greg	2.8	for (j = 0; j < 3; j++) {
138			i = (NCOLS + len)/2; /* center image */
139			fputs("\033%O", stdout);
140			putchar(i & 255);
141			putchar(i >> 8);
142			while (i-- > len) {
143			putchar(0);
144			putchar(0);
145			putchar(0);
146			}
147			for (i = 0; i < len; i++) {
148			c = lpat[i][j] \| colbit(scan[i],i,j);
149			putchar(c>>16);
150			putchar(c>>8 & 255);
151			putchar(c & 255);
152			if (y) /* repeat this row */
153	greg	1.9	lpat[i][j] = (c & 1) << 23;
154	greg	2.8	else /* or clear for next image */
155			lpat[i][j] = 0L;
156	greg	1.1	}
157	greg	2.8	putchar('\r');
158	greg	1.1	}
159	greg	2.8	putchar('\n');
160			fflush(stdout);
161	greg	1.1	}
162
163
164			colbit(col, x, s) /* determine bit value for primary at x */
165	greg	1.6	COLR col;
166	greg	1.1	register int x;
167			int s;
168			{
169	greg	1.6	static int cerr[NCOLS][3];
170	greg	2.2	static int err[3];
171			int b, errp;
172	greg	1.1	register int a, ison;
173
174			a = sub_add(s); /* use additive primary */
175	greg	1.6	b = col[a];
176	greg	2.2	errp = err[a];
177	greg	1.1	err[a] += b + cerr[x][a];
178	greg	1.6	ison = err[a] < 128;
179			if (!ison) err[a] -= 256;
180	greg	1.11	err[a] /= 3;
181	greg	2.2	cerr[x][a] = err[a] + errp;
182	greg	1.1	return(ison);
183			}