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>
#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

/*
 *  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? */

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", 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((int)(c>>16));
                        putchar((int)(c>>8 & 255));
                        putchar((int)(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:	2.10
Committed:	Mon Aug 2 14:39:07 1993 UTC (30 years, 9 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.9:	+0 -3 lines
Log Message:	removed questionable line buffer setting
#	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	greg	2.9	#ifdef MSDOS
13			#include <fcntl.h>
14			#endif
15	greg	1.1
16			#include "color.h"
17	greg	1.12	#include "resolu.h"
18	greg	1.1
19	greg	2.9	#define NROWS 1440 /* 10" at 144 dpi */
20			#define NCOLS 960 /* 8" at 120 dpi */
21	greg	1.1
22	greg	2.9	#define ASPECT (120./144.) /* pixel aspect ratio */
23	greg	2.3
24	greg	2.9	#define FILTER "pfilt -1 -x %d -y %d -p %f %s",NCOLS,NROWS,ASPECT
25	greg	2.3
26	greg	1.1	/*
27	greg	2.9	* Subtractive primaries are ordered: Yellow, Magenta, Cyan.
28	greg	1.1	*/
29
30	greg	2.9	#define sub_add(sub) (2-(sub)) /* map subtractive to additive pri. */
31	greg	1.1
32	greg	1.9	long lpat[NCOLS][3];
33
34	greg	2.3	int dofilter = 0; /* filter through pfilt first? */
35	greg	1.9
36	greg	2.9	extern FILE *popen();
37	greg	2.3
38	greg	2.9
39	greg	1.1	main(argc, argv)
40			int argc;
41			char *argv[];
42			{
43			int i, status = 0;
44	greg	2.9	#ifdef MSDOS
45			extern int _fmode;
46			_fmode = O_BINARY;
47			setmode(fileno(stdin), O_BINARY);
48			setmode(fileno(stdout), O_BINARY);
49			#endif
50	greg	2.3	if (argc > 1 && !strcmp(argv[1], "-p")) {
51			dofilter++;
52			argv++; argc--;
53			}
54	greg	1.1	if (argc < 2)
55			status = printp(NULL) == -1;
56			else
57			for (i = 1; i < argc; i++)
58			status += printp(argv[i]) == -1;
59			exit(status);
60			}
61
62
63			printp(fname) /* print a picture */
64			char *fname;
65			{
66	greg	2.3	char buf[64];
67	greg	1.1	FILE *input;
68			int xres, yres;
69	greg	1.6	COLR scanline[NCOLS];
70	greg	1.1	int i;
71
72	greg	2.3	if (dofilter) {
73	greg	2.6	if (fname == NULL) {
74			sprintf(buf, FILTER, "");
75			fname = "<stdin>";
76			} else
77			sprintf(buf, FILTER, fname);
78	greg	2.3	if ((input = popen(buf, "r")) == NULL) {
79			fprintf(stderr, "Cannot execute: %s\n", buf);
80			return(-1);
81			}
82			} else if (fname == NULL) {
83	greg	1.1	input = stdin;
84			fname = "<stdin>";
85			} else if ((input = fopen(fname, "r")) == NULL) {
86			fprintf(stderr, "%s: cannot open\n", fname);
87			return(-1);
88			}
89			/* discard header */
90	greg	1.10	if (checkheader(input, COLRFMT, NULL) < 0) {
91			fprintf(stderr, "%s: not a Radiance picture\n", fname);
92			return(-1);
93			}
94	greg	1.1	/* get picture dimensions */
95	greg	1.12	if (fgetresolu(&xres, &yres, input) < 0) {
96	greg	1.1	fprintf(stderr, "%s: bad picture size\n", fname);
97			return(-1);
98			}
99	greg	2.7	if (xres > NCOLS) {
100	greg	1.1	fprintf(stderr, "%s: resolution mismatch\n", fname);
101			return(-1);
102			}
103	greg	1.3	/* set line spacing (overlap for knitting) */
104	greg	1.5	fputs("\0333\042", stdout);
105	greg	1.3	/* put out scanlines */
106	greg	1.1	for (i = yres-1; i >= 0; i--) {
107	greg	1.6	if (freadcolrs(scanline, xres, input) < 0) {
108	greg	1.1	fprintf(stderr, "%s: read error (y=%d)\n", fname, i);
109			return(-1);
110			}
111	greg	1.8	normcolrs(scanline, xres, 0);
112	greg	1.1	plotscan(scanline, xres, i);
113			}
114	greg	1.3	/* advance page */
115	greg	1.1	putchar('\f');
116
117	greg	2.3	if (dofilter)
118			pclose(input);
119			else
120			fclose(input);
121	greg	1.1
122			return(0);
123	greg	1.6	}
124
125
126	greg	1.1	plotscan(scan, len, y) /* plot a scanline */
127	greg	1.6	COLR scan[];
128	greg	1.1	int len;
129			int y;
130			{
131			int bpos;
132			register long c;
133			register int i, j;
134
135	greg	1.5	if (bpos = y % 23) {
136	greg	1.1
137	greg	1.5	for (j = 0; j < 3; j++)
138			for (i = 0; i < len; i++)
139	greg	1.9	lpat[i][j] \|= (long)colbit(scan[i],i,j) << bpos;
140	greg	2.8	return;
141			}
142			fputs("\033\031", stdout);
143	greg	1.1
144	greg	2.8	for (j = 0; j < 3; j++) {
145			i = (NCOLS + len)/2; /* center image */
146			fputs("\033%O", stdout);
147			putchar(i & 255);
148			putchar(i >> 8);
149			while (i-- > len) {
150			putchar(0);
151			putchar(0);
152			putchar(0);
153			}
154			for (i = 0; i < len; i++) {
155			c = lpat[i][j] \| colbit(scan[i],i,j);
156	greg	2.9	putchar((int)(c>>16));
157			putchar((int)(c>>8 & 255));
158			putchar((int)(c & 255));
159	greg	2.8	if (y) /* repeat this row */
160	greg	1.9	lpat[i][j] = (c & 1) << 23;
161	greg	2.8	else /* or clear for next image */
162			lpat[i][j] = 0L;
163	greg	1.1	}
164	greg	2.8	putchar('\r');
165	greg	1.1	}
166	greg	2.8	putchar('\n');
167			fflush(stdout);
168	greg	1.1	}
169
170
171			colbit(col, x, s) /* determine bit value for primary at x */
172	greg	1.6	COLR col;
173	greg	1.1	register int x;
174			int s;
175			{
176	greg	1.6	static int cerr[NCOLS][3];
177	greg	2.2	static int err[3];
178			int b, errp;
179	greg	1.1	register int a, ison;
180
181			a = sub_add(s); /* use additive primary */
182	greg	1.6	b = col[a];
183	greg	2.2	errp = err[a];
184	greg	1.1	err[a] += b + cerr[x][a];
185	greg	1.6	ison = err[a] < 128;
186			if (!ison) err[a] -= 256;
187	greg	1.11	err[a] /= 3;
188	greg	2.2	cerr[x][a] = err[a] + errp;
189	greg	1.1	return(ison);
190			}