src/px/protate.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 * prot.c - program to rotate picture file 90 degrees clockwise.
 *
 *      2/26/88
 */

#include "standard.h"

#include "color.h"

#include <time.h>

#include "resolu.h"

int     order;                          /* input scanline order */
int     xres, yres;                     /* input resolution */

int     correctorder = 0;               /* order correction? */
int     ccw = 0;                        /* rotate CCW? */

#ifdef BIGMEM
char    buf[1<<22];                     /* output buffer */
#else
char    buf[1<<20];                     /* output buffer */
#endif

int     nrows;                          /* number of rows output at once */

#define scanbar         ((COLR *)buf)

char    *progname;

short   ordertab[4][2] = {
        {0,XDECR}, {XDECR,XDECR|YDECR}, {XDECR|YDECR,YDECR}, {YDECR,0}
};


int
neworder()              /* return corrected order */
{
        register int    i;

        if (correctorder)
                return(order);
        for (i = 4; i--; )
                if ((order&~YMAJOR) == ordertab[i][ccw])
                        return(ordertab[i][1-ccw] | ((order&YMAJOR)^YMAJOR));
        fputs("Order botch!\n", stderr);
        exit(2);
}


main(argc, argv)
int     argc;
char    *argv[];
{
        static char     picfmt[LPICFMT+1] = PICFMT;
        int     rval;
        FILE    *fin;

        progname = argv[0];

        while (argc > 2 && argv[1][0] == '-') {
                switch (argv[1][1]) {
                case 'c':
                        correctorder = 1;
                        break;
                case 'r':
                        ccw = 1;
                        break;
                default:
                        goto userr;
                }
                argc--; argv++;
        }
        if (argc != 2 && argc != 3)
                goto userr;
        if ((fin = fopen(argv[1], "r")) == NULL) {
                fprintf(stderr, "%s: cannot open\n", argv[1]);
                exit(1);
        }
        if (argc == 3 && freopen(argv[2], "w", stdout) == NULL) {
                fprintf(stderr, "%s: cannot open\n", argv[2]);
                exit(1);
        }
                                        /* transfer header */
        if ((rval = checkheader(fin, picfmt, stdout)) < 0) {
                fprintf(stderr, "%s: not a Radiance picture\n", progname);
                exit(1);
        }
        if (rval)
                fputformat(picfmt, stdout);
                                        /* add new header info. */
        fputs(progname, stdout);
        if (ccw) fputs(" -r", stdout);
        if (correctorder) fputs(" -c", stdout);
        fputs("\n\n", stdout);
                                        /* get picture size */
        if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
                fprintf(stderr, "%s: bad picture size\n", progname);
                exit(1);
        }
                                        /* write new picture size */
        fputresolu(neworder(), yres, xres, stdout);
                                        /* compute buffer capacity */
        nrows = sizeof(buf)/sizeof(COLR)/yres;
        if (ccw)                        /* rotate the image */
                rotateccw(fin);
        else
                rotatecw(fin);
        exit(0);
userr:
        fprintf(stderr, "Usage: %s [-r][-c] infile [outfile]\n", progname);
        exit(1);
}


rotatecw(fp)                    /* rotate picture clockwise */
FILE    *fp;
{
        register COLR   *inln;
        register int    xoff, inx, iny;
        long    start, ftell();

        if ((inln = (COLR *)malloc(xres*sizeof(COLR))) == NULL) {
                fprintf(stderr, "%s: out of memory\n", progname);
                exit(1);
        }
        start = ftell(fp);
        for (xoff = 0; xoff < xres; xoff += nrows) {
                if (fseek(fp, start, 0) < 0) {
                        fprintf(stderr, "%s: seek error\n", progname);
                        exit(1);
                }
                for (iny = yres-1; iny >= 0; iny--) {
                        if (freadcolrs(inln, xres, fp) < 0) {
                                fprintf(stderr, "%s: read error\n", progname);
                                exit(1);
                        }
                        for (inx = 0; inx < nrows && xoff+inx < xres; inx++)
                                copycolr(scanbar[inx*yres+iny],
                                                inln[xoff+inx]);
                }
                for (inx = 0; inx < nrows && xoff+inx < xres; inx++)
                        if (fwritecolrs(scanbar+inx*yres, yres, stdout) < 0) {
                                fprintf(stderr, "%s: write error\n", progname);
                                exit(1);
                        }
        }
        free((void *)inln);
}


rotateccw(fp)                   /* rotate picture counter-clockwise */
FILE    *fp;
{
        register COLR   *inln;
        register int    xoff, inx, iny;
        long    start, ftell();

        if ((inln = (COLR *)malloc(xres*sizeof(COLR))) == NULL) {
                fprintf(stderr, "%s: out of memory\n", progname);
                exit(1);
        }
        start = ftell(fp);
        for (xoff = xres-1; xoff >= 0; xoff -= nrows) {
                if (fseek(fp, start, 0) < 0) {
                        fprintf(stderr, "%s: seek error\n", progname);
                        exit(1);
                }
                for (iny = 0; iny < yres; iny++) {
                        if (freadcolrs(inln, xres, fp) < 0) {
                                fprintf(stderr, "%s: read error\n", progname);
                                exit(1);
                        }
                        for (inx = 0; inx < nrows && xoff-inx >= 0; inx++)
                                copycolr(scanbar[inx*yres+iny],
                                                inln[xoff-inx]);
                }
                for (inx = 0; inx < nrows && xoff-inx >= 0; inx++)
                        if (fwritecolrs(scanbar+inx*yres, yres, stdout) < 0) {
                                fprintf(stderr, "%s: write error\n", progname);
                                exit(1);
                        }
        }
        free((void *)inln);
}
Revision:	2.7
Committed:	Sat Feb 22 02:07:27 2003 UTC (22 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R5
Changes since 2.6:	+5 -6 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	2.7	static const char RCSid[] = "$Id$";
3	greg	1.1	#endif
4			/*
5			* prot.c - program to rotate picture file 90 degrees clockwise.
6			*
7			* 2/26/88
8			*/
9
10	greg	1.7	#include "standard.h"
11	greg	1.1
12			#include "color.h"
13
14	greg	2.7	#include <time.h>
15
16	greg	1.9	#include "resolu.h"
17
18			int order; /* input scanline order */
19	greg	1.1	int xres, yres; /* input resolution */
20
21	greg	1.9	int correctorder = 0; /* order correction? */
22	gwlarson	2.5	int ccw = 0; /* rotate CCW? */
23	greg	1.9
24	greg	2.2	#ifdef BIGMEM
25			char buf[1<<22]; /* output buffer */
26			#else
27	greg	1.1	char buf[1<<20]; /* output buffer */
28	greg	2.2	#endif
29	greg	1.1
30			int nrows; /* number of rows output at once */
31
32			#define scanbar ((COLR *)buf)
33
34			char *progname;
35
36	gwlarson	2.5	short ordertab[4][2] = {
37			{0,XDECR}, {XDECR,XDECR\|YDECR}, {XDECR\|YDECR,YDECR}, {YDECR,0}
38			};
39	greg	1.1
40	greg	1.8
41	gwlarson	2.5	int
42			neworder() /* return corrected order */
43			{
44			register int i;
45
46			if (correctorder)
47			return(order);
48			for (i = 4; i--; )
49			if ((order&~YMAJOR) == ordertab[i][ccw])
50			return(ordertab[i][1-ccw] \| ((order&YMAJOR)^YMAJOR));
51			fputs("Order botch!\n", stderr);
52			exit(2);
53			}
54
55
56	greg	1.1	main(argc, argv)
57			int argc;
58			char *argv[];
59			{
60	greg	2.4	static char picfmt[LPICFMT+1] = PICFMT;
61			int rval;
62	greg	1.1	FILE *fin;
63
64			progname = argv[0];
65
66	gwlarson	2.5	while (argc > 2 && argv[1][0] == '-') {
67			switch (argv[1][1]) {
68			case 'c':
69			correctorder = 1;
70			break;
71			case 'r':
72			ccw = 1;
73			break;
74			default:
75			goto userr;
76			}
77	greg	1.9	argc--; argv++;
78			}
79	gwlarson	2.5	if (argc != 2 && argc != 3)
80			goto userr;
81	greg	1.1	if ((fin = fopen(argv[1], "r")) == NULL) {
82			fprintf(stderr, "%s: cannot open\n", argv[1]);
83			exit(1);
84			}
85			if (argc == 3 && freopen(argv[2], "w", stdout) == NULL) {
86			fprintf(stderr, "%s: cannot open\n", argv[2]);
87			exit(1);
88			}
89	greg	1.6	/* transfer header */
90	greg	2.4	if ((rval = checkheader(fin, picfmt, stdout)) < 0) {
91	greg	1.9	fprintf(stderr, "%s: not a Radiance picture\n", progname);
92	greg	1.8	exit(1);
93			}
94	greg	2.4	if (rval)
95			fputformat(picfmt, stdout);
96	greg	1.1	/* add new header info. */
97	gwlarson	2.5	fputs(progname, stdout);
98			if (ccw) fputs(" -r", stdout);
99			if (correctorder) fputs(" -c", stdout);
100			fputs("\n\n", stdout);
101	greg	1.1	/* get picture size */
102	greg	1.9	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
103	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
104			exit(1);
105			}
106			/* write new picture size */
107	greg	1.9	fputresolu(neworder(), yres, xres, stdout);
108	greg	1.1	/* compute buffer capacity */
109			nrows = sizeof(buf)/sizeof(COLR)/yres;
110	gwlarson	2.5	if (ccw) /* rotate the image */
111			rotateccw(fin);
112			else
113			rotatecw(fin);
114	greg	1.1	exit(0);
115	gwlarson	2.5	userr:
116			fprintf(stderr, "Usage: %s [-r][-c] infile [outfile]\n", progname);
117			exit(1);
118	greg	1.1	}
119
120
121	gwlarson	2.5	rotatecw(fp) /* rotate picture clockwise */
122	greg	1.1	FILE *fp;
123			{
124	greg	1.5	register COLR *inln;
125	greg	1.1	register int xoff, inx, iny;
126			long start, ftell();
127
128	greg	1.5	if ((inln = (COLR )malloc(xressizeof(COLR))) == NULL) {
129	greg	1.1	fprintf(stderr, "%s: out of memory\n", progname);
130			exit(1);
131			}
132			start = ftell(fp);
133			for (xoff = 0; xoff < xres; xoff += nrows) {
134			if (fseek(fp, start, 0) < 0) {
135			fprintf(stderr, "%s: seek error\n", progname);
136			exit(1);
137			}
138			for (iny = yres-1; iny >= 0; iny--) {
139	greg	1.5	if (freadcolrs(inln, xres, fp) < 0) {
140	greg	1.1	fprintf(stderr, "%s: read error\n", progname);
141			exit(1);
142			}
143			for (inx = 0; inx < nrows && xoff+inx < xres; inx++)
144	gwlarson	2.6	copycolr(scanbar[inx*yres+iny],
145			inln[xoff+inx]);
146	greg	1.1	}
147			for (inx = 0; inx < nrows && xoff+inx < xres; inx++)
148	gwlarson	2.5	if (fwritecolrs(scanbar+inx*yres, yres, stdout) < 0) {
149			fprintf(stderr, "%s: write error\n", progname);
150			exit(1);
151			}
152			}
153	greg	2.7	free((void *)inln);
154	gwlarson	2.5	}
155
156
157			rotateccw(fp) /* rotate picture counter-clockwise */
158			FILE *fp;
159			{
160			register COLR *inln;
161			register int xoff, inx, iny;
162			long start, ftell();
163
164			if ((inln = (COLR )malloc(xressizeof(COLR))) == NULL) {
165			fprintf(stderr, "%s: out of memory\n", progname);
166			exit(1);
167			}
168			start = ftell(fp);
169			for (xoff = xres-1; xoff >= 0; xoff -= nrows) {
170			if (fseek(fp, start, 0) < 0) {
171			fprintf(stderr, "%s: seek error\n", progname);
172			exit(1);
173			}
174			for (iny = 0; iny < yres; iny++) {
175			if (freadcolrs(inln, xres, fp) < 0) {
176			fprintf(stderr, "%s: read error\n", progname);
177			exit(1);
178			}
179			for (inx = 0; inx < nrows && xoff-inx >= 0; inx++)
180	gwlarson	2.6	copycolr(scanbar[inx*yres+iny],
181			inln[xoff-inx]);
182	gwlarson	2.5	}
183			for (inx = 0; inx < nrows && xoff-inx >= 0; inx++)
184	greg	1.1	if (fwritecolrs(scanbar+inx*yres, yres, stdout) < 0) {
185			fprintf(stderr, "%s: write error\n", progname);
186			exit(1);
187			}
188			}
189	greg	2.7	free((void *)inln);
190	greg	1.1	}