src/px/mt160r.c

#ifndef lint
static const char       RCSid[] = "$Id: mt160r.c,v 2.6 2003/02/22 02:07:27 greg Exp $";
#endif
/*
 *  mt160r.c - program to dump pixel file to Mannesman-Tally 160.
 *
 *     8/16/85
 */

#include  <stdio.h>
#include  <time.h>

#include  "platform.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;
        SET_DEFAULT_BINARY();
        SET_FILE_BINARY(stdin);
        SET_FILE_BINARY(stdout);
        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:	2.7
Committed:	Thu Jun 5 19:29:34 2003 UTC (20 years, 11 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.6:	+5 -10 lines
Log Message:	Macros for setting binary file mode. Replacing MSDOS by _WIN32.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.7	static const char RCSid[] = "$Id: mt160r.c,v 2.6 2003/02/22 02:07:27 greg Exp $";
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	2.6	#include <time.h>
12	greg	1.1
13	schorsch	2.7	#include "platform.h"
14	greg	1.1	#include "color.h"
15	greg	1.9	#include "resolu.h"
16	greg	1.1
17	greg	2.4	#define NCOLS 880 /* for wide carriage */
18	greg	1.1
19
20			main(argc, argv)
21			int argc;
22			char *argv[];
23			{
24			int i;
25			int status = 0;
26	schorsch	2.7	SET_DEFAULT_BINARY();
27			SET_FILE_BINARY(stdin);
28			SET_FILE_BINARY(stdout);
29	greg	1.1	if (argc < 2)
30			status += printp(NULL) == -1;
31			else
32			for (i = 1; i < argc; i++)
33			status += printp(argv[i]) == -1;
34			exit(status);
35			}
36
37
38			printp(fname) /* print a picture */
39			char *fname;
40			{
41			FILE *input;
42			int xres, yres;
43	greg	1.3	COLR scanline[NCOLS];
44	greg	1.1	int i;
45	greg	2.4
46	greg	1.1	if (fname == NULL) {
47			input = stdin;
48			fname = "<stdin>";
49			} else if ((input = fopen(fname, "r")) == NULL) {
50			fprintf(stderr, "%s: cannot open\n", fname);
51			return(-1);
52			}
53			/* discard header */
54	greg	1.7	if (checkheader(input, COLRFMT, NULL) < 0) {
55			fprintf(stderr, "%s: not a Radiance picture\n", fname);
56			return(-1);
57			}
58	greg	1.1	/* get picture dimensions */
59	greg	1.9	if (fgetresolu(&xres, &yres, input) < 0) {
60	greg	1.1	fprintf(stderr, "%s: bad picture size\n", fname);
61			return(-1);
62			}
63			if (xres > NCOLS) {
64			fprintf(stderr, "%s: resolution mismatch\n", fname);
65			return(-1);
66			}
67
68			fputs("\033[6~\033[7z", stdout);
69
70			for (i = yres-1; i >= 0; i--) {
71	greg	1.3	if (freadcolrs(scanline, xres, input) < 0) {
72	greg	1.1	fprintf(stderr, "%s: read error (y=%d)\n", fname, i);
73			return(-1);
74			}
75	greg	1.6	normcolrs(scanline, xres, 0);
76	greg	1.1	plotscan(scanline, xres, i);
77			}
78
79			fputs("\f\033[6~", stdout);
80
81			fclose(input);
82
83			return(0);
84			}
85
86
87			plotscan(scan, len, y) /* plot a scanline */
88	greg	1.3	COLR scan[];
89	greg	1.1	int len;
90			int y;
91			{
92			static BYTE pat[NCOLS];
93			int bpos;
94			register int i;
95
96			if (bpos = y & 7) {
97
98			for (i = 0; i < len; i++)
99			pat[i] \|= bit(scan[i], i) << bpos;
100
101			} else {
102
103			fputs("\033%5", stdout);
104			putchar(len & 255);
105			putchar(len >> 8);
106
107			for (i = 0; i < len; i++) {
108			pat[i] \|= bit(scan[i], i);
109			putchar(pat[i]);
110			pat[i] = 0;
111			}
112			putchar('\r');
113			putchar('\n');
114	greg	2.3	fflush(stdout);
115	greg	1.1	}
116			}
117
118
119	greg	1.3	bit(clr, x) /* return bit for color at x */
120			COLR clr;
121	greg	1.1	register int x;
122			{
123	greg	1.3	static int cerr[NCOLS];
124	greg	2.2	static int err;
125			int b, errp;
126	greg	1.1	register int isblack;
127
128	greg	1.4	b = normbright(clr);
129	greg	1.8	errp = err;
130	greg	1.1	err += b + cerr[x];
131	greg	1.3	isblack = err < 128;
132			if (!isblack) err -= 256;
133	greg	1.8	err /= 3;
134			cerr[x] = err + errp;
135	greg	1.1	return(isblack);
136			}