src/px/protate.c

#ifndef lint
static const char       RCSid[] = "$Id: protate.c,v 2.9 2004/03/28 20:33:14 schorsch Exp $";
#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 SMLMEM
char    buf[1<<20];                     /* output buffer */
#else
char    buf[1<<22];                     /* output buffer */
#endif

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

#define scanbar         ((COLR *)buf)

char    *progname;

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


static int neworder(void);
static void rotatecw(FILE *fp);
static void rotateccw(FILE *fp);


static int
neworder(void)          /* return corrected order */
{
        static short    ordercw[8];
        register int    i;

        if (correctorder)
                return(order);
        if (!ordercw[0]) {
                ordercw[YMAJOR|YDECR] = 0;
                ordercw[0] = YMAJOR|XDECR;
                ordercw[YMAJOR|XDECR] = XDECR|YDECR;
                ordercw[XDECR|YDECR] = YMAJOR|YDECR;
                ordercw[YMAJOR|XDECR|YDECR] = XDECR;
                ordercw[XDECR] = YMAJOR;
                ordercw[YMAJOR] = YDECR;
                ordercw[YDECR] = YMAJOR|XDECR|YDECR;
        }
        if (!ccw)
                return(ordercw[order]);
        for (i = 8; i--; )
                if (ordercw[i] == order)
                        return(i);
        fputs("Order botch!\n", stderr);
        exit(2);
}

int
main(
        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);
}


static void
rotatecw(                       /* 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);
}


static void
rotateccw(                      /* 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:	2.10
Committed:	Fri Apr 30 20:29:24 2004 UTC (20 years ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R7P2, rad3R7P1, rad4R1, rad4R0, rad3R6, rad3R6P1, rad3R8, rad3R9
Changes since 2.9:	+19 -5 lines
Log Message:	Fixed bug in pixel ordering out of protate
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.10	static const char RCSid[] = "$Id: protate.c,v 2.9 2004/03/28 20:33:14 schorsch Exp $";
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	2.8	#ifdef SMLMEM
25			char buf[1<<20]; /* output buffer */
26			#else
27	greg	2.2	char buf[1<<22]; /* output buffer */
28			#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	greg	2.10	{0,0}, {XDECR,XDECR\|YDECR}, {XDECR\|YDECR,YDECR}, {YDECR,XDECR}
38	gwlarson	2.5	};
39	greg	1.1
40	greg	2.10
41	schorsch	2.9	static int neworder(void);
42			static void rotatecw(FILE *fp);
43			static void rotateccw(FILE *fp);
44	greg	1.8
45	schorsch	2.9
46
47			static int
48			neworder(void) /* return corrected order */
49	gwlarson	2.5	{
50	greg	2.10	static short ordercw[8];
51	gwlarson	2.5	register int i;
52
53			if (correctorder)
54			return(order);
55	greg	2.10	if (!ordercw[0]) {
56			ordercw[YMAJOR\|YDECR] = 0;
57			ordercw[0] = YMAJOR\|XDECR;
58			ordercw[YMAJOR\|XDECR] = XDECR\|YDECR;
59			ordercw[XDECR\|YDECR] = YMAJOR\|YDECR;
60			ordercw[YMAJOR\|XDECR\|YDECR] = XDECR;
61			ordercw[XDECR] = YMAJOR;
62			ordercw[YMAJOR] = YDECR;
63			ordercw[YDECR] = YMAJOR\|XDECR\|YDECR;
64			}
65			if (!ccw)
66			return(ordercw[order]);
67			for (i = 8; i--; )
68			if (ordercw[i] == order)
69			return(i);
70	gwlarson	2.5	fputs("Order botch!\n", stderr);
71			exit(2);
72			}
73
74	schorsch	2.9	int
75			main(
76			int argc,
77			char *argv[]
78			)
79	greg	1.1	{
80	greg	2.4	static char picfmt[LPICFMT+1] = PICFMT;
81			int rval;
82	greg	1.1	FILE *fin;
83
84			progname = argv[0];
85
86	gwlarson	2.5	while (argc > 2 && argv[1][0] == '-') {
87			switch (argv[1][1]) {
88			case 'c':
89			correctorder = 1;
90			break;
91			case 'r':
92			ccw = 1;
93			break;
94			default:
95			goto userr;
96			}
97	greg	1.9	argc--; argv++;
98			}
99	gwlarson	2.5	if (argc != 2 && argc != 3)
100			goto userr;
101	greg	1.1	if ((fin = fopen(argv[1], "r")) == NULL) {
102			fprintf(stderr, "%s: cannot open\n", argv[1]);
103			exit(1);
104			}
105			if (argc == 3 && freopen(argv[2], "w", stdout) == NULL) {
106			fprintf(stderr, "%s: cannot open\n", argv[2]);
107			exit(1);
108			}
109	greg	1.6	/* transfer header */
110	greg	2.4	if ((rval = checkheader(fin, picfmt, stdout)) < 0) {
111	greg	1.9	fprintf(stderr, "%s: not a Radiance picture\n", progname);
112	greg	1.8	exit(1);
113			}
114	greg	2.4	if (rval)
115			fputformat(picfmt, stdout);
116	greg	1.1	/* add new header info. */
117	gwlarson	2.5	fputs(progname, stdout);
118			if (ccw) fputs(" -r", stdout);
119			if (correctorder) fputs(" -c", stdout);
120			fputs("\n\n", stdout);
121	greg	1.1	/* get picture size */
122	greg	1.9	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
123	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
124			exit(1);
125			}
126			/* write new picture size */
127	greg	1.9	fputresolu(neworder(), yres, xres, stdout);
128	greg	1.1	/* compute buffer capacity */
129			nrows = sizeof(buf)/sizeof(COLR)/yres;
130	gwlarson	2.5	if (ccw) /* rotate the image */
131			rotateccw(fin);
132			else
133			rotatecw(fin);
134	greg	1.1	exit(0);
135	gwlarson	2.5	userr:
136			fprintf(stderr, "Usage: %s [-r][-c] infile [outfile]\n", progname);
137			exit(1);
138	greg	1.1	}
139
140
141	schorsch	2.9	static void
142			rotatecw( /* rotate picture clockwise */
143			FILE *fp
144			)
145	greg	1.1	{
146	greg	1.5	register COLR *inln;
147	greg	1.1	register int xoff, inx, iny;
148			long start, ftell();
149
150	greg	1.5	if ((inln = (COLR )malloc(xressizeof(COLR))) == NULL) {
151	greg	1.1	fprintf(stderr, "%s: out of memory\n", progname);
152			exit(1);
153			}
154			start = ftell(fp);
155			for (xoff = 0; xoff < xres; xoff += nrows) {
156			if (fseek(fp, start, 0) < 0) {
157			fprintf(stderr, "%s: seek error\n", progname);
158			exit(1);
159			}
160			for (iny = yres-1; iny >= 0; iny--) {
161	greg	1.5	if (freadcolrs(inln, xres, fp) < 0) {
162	greg	1.1	fprintf(stderr, "%s: read error\n", progname);
163			exit(1);
164			}
165			for (inx = 0; inx < nrows && xoff+inx < xres; inx++)
166	gwlarson	2.6	copycolr(scanbar[inx*yres+iny],
167			inln[xoff+inx]);
168	greg	1.1	}
169			for (inx = 0; inx < nrows && xoff+inx < xres; inx++)
170	gwlarson	2.5	if (fwritecolrs(scanbar+inx*yres, yres, stdout) < 0) {
171			fprintf(stderr, "%s: write error\n", progname);
172			exit(1);
173			}
174			}
175	greg	2.7	free((void *)inln);
176	gwlarson	2.5	}
177
178
179	schorsch	2.9	static void
180			rotateccw( /* rotate picture counter-clockwise */
181			FILE *fp
182			)
183	gwlarson	2.5	{
184			register COLR *inln;
185			register int xoff, inx, iny;
186			long start, ftell();
187
188			if ((inln = (COLR )malloc(xressizeof(COLR))) == NULL) {
189			fprintf(stderr, "%s: out of memory\n", progname);
190			exit(1);
191			}
192			start = ftell(fp);
193			for (xoff = xres-1; xoff >= 0; xoff -= nrows) {
194			if (fseek(fp, start, 0) < 0) {
195			fprintf(stderr, "%s: seek error\n", progname);
196			exit(1);
197			}
198			for (iny = 0; iny < yres; iny++) {
199			if (freadcolrs(inln, xres, fp) < 0) {
200			fprintf(stderr, "%s: read error\n", progname);
201			exit(1);
202			}
203			for (inx = 0; inx < nrows && xoff-inx >= 0; inx++)
204	gwlarson	2.6	copycolr(scanbar[inx*yres+iny],
205			inln[xoff-inx]);
206	gwlarson	2.5	}
207			for (inx = 0; inx < nrows && xoff-inx >= 0; inx++)
208	greg	1.1	if (fwritecolrs(scanbar+inx*yres, yres, stdout) < 0) {
209			fprintf(stderr, "%s: write error\n", progname);
210			exit(1);
211			}
212			}
213	greg	2.7	free((void *)inln);
214	greg	1.1	}