src/px/mt160r.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 *  mt160r.c - program to dump pixel file to Mannesman-Tally 160.
 *
 *     8/16/85
 */

#include  <stdio.h>
#ifdef MSDOS
#include  <fcntl.h>
#endif
#include  <time.h>

#include  "color.h"
#include  "resolu.h"

#define  NCOLS          880             /* for wide carriage */


main(argc, argv)
int  argc;
char  *argv[];
{
        int  i;
        int  status = 0;
#ifdef MSDOS
        extern int  _fmode;
        _fmode = O_BINARY;
        setmode(fileno(stdin), O_BINARY);
        setmode(fileno(stdout), O_BINARY);
#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;
{
        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 */
        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);
        }

        fputs("\033[6~\033[7z", stdout);
        
        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);
        }

        fputs("\f\033[6~", stdout);

        fclose(input);

        return(0);
}


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

        if (bpos = y & 7) {

                for (i = 0; i < len; i++)
                        pat[i] |= bit(scan[i], i) << bpos;

        } else {

                fputs("\033%5", stdout);
                putchar(len & 255);
                putchar(len >> 8);

                for (i = 0; i < len; i++) {
                        pat[i] |= bit(scan[i], i);
                        putchar(pat[i]);
                        pat[i] = 0;
                }
                putchar('\r');
                putchar('\n');
                fflush(stdout);
        }
}


bit(clr, x)                             /* return bit for color at x */
COLR  clr;
register int  x;
{
        static int  cerr[NCOLS];
        static int  err;
        int  b, errp;
        register int  isblack;

        b = normbright(clr);
        errp = err;
        err += b + cerr[x];
        isblack = err < 128;
        if (!isblack) err -= 256;
        err /= 3;
        cerr[x] = err + errp;
        return(isblack);
}
Revision:	2.6
Committed:	Sat Feb 22 02:07:27 2003 UTC (21 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R5
Changes since 2.5:	+2 -4 lines
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.6	static const char RCSid[] = "$Id$";
3	greg	1.1	#endif
4			/*
5			* mt160r.c - program to dump pixel file to Mannesman-Tally 160.
6			*
7			* 8/16/85
8			*/
9
10			#include <stdio.h>
11	greg	2.4	#ifdef MSDOS
12			#include <fcntl.h>
13			#endif
14	greg	2.6	#include <time.h>
15	greg	1.1
16			#include "color.h"
17	greg	1.9	#include "resolu.h"
18	greg	1.1
19	greg	2.4	#define NCOLS 880 /* for wide carriage */
20	greg	1.1
21
22			main(argc, argv)
23			int argc;
24			char *argv[];
25			{
26			int i;
27			int status = 0;
28	greg	2.4	#ifdef MSDOS
29			extern int _fmode;
30			_fmode = O_BINARY;
31			setmode(fileno(stdin), O_BINARY);
32			setmode(fileno(stdout), O_BINARY);
33			#endif
34	greg	1.1	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	1.3	COLR scanline[NCOLS];
49	greg	1.1	int i;
50	greg	2.4
51	greg	1.1	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	greg	1.7	if (checkheader(input, COLRFMT, NULL) < 0) {
60			fprintf(stderr, "%s: not a Radiance picture\n", fname);
61			return(-1);
62			}
63	greg	1.1	/* get picture dimensions */
64	greg	1.9	if (fgetresolu(&xres, &yres, input) < 0) {
65	greg	1.1	fprintf(stderr, "%s: bad picture size\n", fname);
66			return(-1);
67			}
68			if (xres > NCOLS) {
69			fprintf(stderr, "%s: resolution mismatch\n", fname);
70			return(-1);
71			}
72
73			fputs("\033[6~\033[7z", stdout);
74
75			for (i = yres-1; i >= 0; i--) {
76	greg	1.3	if (freadcolrs(scanline, xres, input) < 0) {
77	greg	1.1	fprintf(stderr, "%s: read error (y=%d)\n", fname, i);
78			return(-1);
79			}
80	greg	1.6	normcolrs(scanline, xres, 0);
81	greg	1.1	plotscan(scanline, xres, i);
82			}
83
84			fputs("\f\033[6~", stdout);
85
86			fclose(input);
87
88			return(0);
89			}
90
91
92			plotscan(scan, len, y) /* plot a scanline */
93	greg	1.3	COLR scan[];
94	greg	1.1	int len;
95			int y;
96			{
97			static BYTE pat[NCOLS];
98			int bpos;
99			register int i;
100
101			if (bpos = y & 7) {
102
103			for (i = 0; i < len; i++)
104			pat[i] \|= bit(scan[i], i) << bpos;
105
106			} else {
107
108			fputs("\033%5", stdout);
109			putchar(len & 255);
110			putchar(len >> 8);
111
112			for (i = 0; i < len; i++) {
113			pat[i] \|= bit(scan[i], i);
114			putchar(pat[i]);
115			pat[i] = 0;
116			}
117			putchar('\r');
118			putchar('\n');
119	greg	2.3	fflush(stdout);
120	greg	1.1	}
121			}
122
123
124	greg	1.3	bit(clr, x) /* return bit for color at x */
125			COLR clr;
126	greg	1.1	register int x;
127			{
128	greg	1.3	static int cerr[NCOLS];
129	greg	2.2	static int err;
130			int b, errp;
131	greg	1.1	register int isblack;
132
133	greg	1.4	b = normbright(clr);
134	greg	1.8	errp = err;
135	greg	1.1	err += b + cerr[x];
136	greg	1.3	isblack = err < 128;
137			if (!isblack) err -= 256;
138	greg	1.8	err /= 3;
139			cerr[x] = err + errp;
140	greg	1.1	return(isblack);
141			}