src/px/pflip.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 * flip picture file horizontally and/or vertically
 */

#include <stdio.h>

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

#include  <time.h>

#include "color.h"

#include "resolu.h"

int     order;                          /* input orientation */
int     xres, yres;                     /* resolution (scanlen, nscans) */

long    *scanpos;                       /* scanline positions */

int     fhoriz=0, fvert=0;              /* flip flags */

int     correctorder = 0;               /* correcting orientation? */

FILE    *fin;                           /* input file */

char    *progname;


int
neworder()                      /* figure out new order from old */
{
        register int  no;

        if (correctorder)
                return(order);          /* just leave it */
        if ((no = order) & YMAJOR) {
                if (fhoriz) no ^= XDECR;
                if (fvert) no ^= YDECR;
        } else {
                if (fhoriz) no ^= YDECR;
                if (fvert) no ^= XDECR;
        }
        return(no);
}


main(argc, argv)
int     argc;
char    *argv[];
{
        static char     picfmt[LPICFMT+1] = PICFMT;
        int     i, rval;
#ifdef MSDOS
        extern int  _fmode;
        _fmode = O_BINARY;
        setmode(fileno(stdout), O_BINARY);
#endif
        progname = argv[0];

        for (i = 1; i < argc; i++)
                if (!strcmp(argv[i], "-h"))
                        fhoriz++;
                else if (!strcmp(argv[i], "-v"))
                        fvert++;
                else if (!strcmp(argv[i], "-c"))
                        correctorder++;
                else
                        break;
        if (i >= argc || argv[i][0] == '-') {
                fprintf(stderr, "Usage: %s [-h][-v][-c] infile [outfile]\n",
                                progname);
                exit(1);
        }
        if ((fin = fopen(argv[i], "r")) == NULL) {
                fprintf(stderr, "%s: cannot open\n", argv[1]);
                exit(1);
        }
        if (i < argc-1 && freopen(argv[i+1], "w", stdout) == NULL) {
                fprintf(stderr, "%s: cannot open\n", argv[i+1]);
                exit(1);
        }
                                        /* transfer header */
        if ((rval = checkheader(fin, picfmt, stdout)) < 0) {
                fprintf(stderr, "%s: input not a Radiance picture\n",
                                progname);
                exit(1);
        }
        if (rval)
                fputformat(picfmt, stdout);
                                        /* add new header info. */
        printargs(i, argv, stdout);
        putchar('\n');
                                        /* 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(), xres, yres, stdout);
                                        /* goto end if vertical flip */
        if (fvert)
                scanfile();
        flip();                         /* flip the image */
        exit(0);
}


memerr()
{
        fprintf(stderr, "%s: out of memory\n", progname);
        exit(1);
}


scanfile()                              /* scan to the end of file */
{
        extern long     ftell();
        COLR    *scanin;
        int     y;

        if ((scanpos = (long *)malloc(yres*sizeof(long))) == NULL)
                memerr();
        if ((scanin = (COLR *)malloc(xres*sizeof(COLR))) == NULL)
                memerr();
        for (y = yres-1; y > 0; y--) {
                scanpos[y] = ftell(fin);
                if (freadcolrs(scanin, xres, fin) < 0) {
                        fprintf(stderr, "%s: read error\n", progname);
                        exit(1);
                }
        }
        scanpos[0] = ftell(fin);
        free((void *)scanin);
}


flip()                                  /* flip the picture */
{
        COLR    *scanin, *scanout;
        int     y;
        register int    x;

        if ((scanin = (COLR *)malloc(xres*sizeof(COLR))) == NULL)
                memerr();
        if (fhoriz) {
                if ((scanout = (COLR *)malloc(xres*sizeof(COLR))) == NULL)
                        memerr();
        } else
                scanout = scanin;
        for (y = yres-1; y >= 0; y--) {
                if (fvert && fseek(fin, scanpos[yres-1-y], 0) == EOF) {
                        fprintf(stderr, "%s: seek error\n", progname);
                        exit(1);
                }
                if (freadcolrs(scanin, xres, fin) < 0) {
                        fprintf(stderr, "%s: read error\n", progname);
                        exit(1);
                }
                if (fhoriz)
                        for (x = 0; x < xres; x++)
                                copycolr(scanout[x], scanin[xres-1-x]);
                if (fwritecolrs(scanout, xres, stdout) < 0) {
                        fprintf(stderr, "%s: write error\n", progname);
                        exit(1);
                }
        }
        free((void *)scanin);
        if (fhoriz)
                free((void *)scanout);
}
Revision:	2.5
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 2.4:	+6 -9 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	2.5	static const char RCSid[] = "$Id$";
3	greg	1.1	#endif
4			/*
5			* flip picture file horizontally and/or vertically
6			*/
7
8	greg	1.3	#include <stdio.h>
9	greg	1.1
10	greg	2.2	#ifdef MSDOS
11			#include <fcntl.h>
12			#endif
13
14	greg	2.5	#include <time.h>
15
16	greg	1.1	#include "color.h"
17
18	greg	1.5	#include "resolu.h"
19	greg	1.1
20	greg	1.5	int order; /* input orientation */
21			int xres, yres; /* resolution (scanlen, nscans) */
22
23	greg	1.1	long scanpos; / scanline positions */
24
25	greg	1.5	int fhoriz=0, fvert=0; /* flip flags */
26	greg	1.1
27	greg	1.5	int correctorder = 0; /* correcting orientation? */
28
29	greg	1.1	FILE fin; / input file */
30
31			char *progname;
32
33	greg	2.2
34	greg	1.5	int
35			neworder() /* figure out new order from old */
36			{
37			register int no;
38
39			if (correctorder)
40			return(order); /* just leave it */
41			if ((no = order) & YMAJOR) {
42			if (fhoriz) no ^= XDECR;
43			if (fvert) no ^= YDECR;
44			} else {
45			if (fhoriz) no ^= YDECR;
46			if (fvert) no ^= XDECR;
47			}
48			return(no);
49			}
50
51
52	greg	1.1	main(argc, argv)
53			int argc;
54			char *argv[];
55			{
56	greg	2.4	static char picfmt[LPICFMT+1] = PICFMT;
57			int i, rval;
58	greg	2.2	#ifdef MSDOS
59			extern int _fmode;
60			_fmode = O_BINARY;
61			setmode(fileno(stdout), O_BINARY);
62			#endif
63	greg	1.1	progname = argv[0];
64
65			for (i = 1; i < argc; i++)
66			if (!strcmp(argv[i], "-h"))
67			fhoriz++;
68			else if (!strcmp(argv[i], "-v"))
69			fvert++;
70	greg	1.5	else if (!strcmp(argv[i], "-c"))
71			correctorder++;
72	greg	1.1	else
73			break;
74			if (i >= argc \|\| argv[i][0] == '-') {
75	greg	1.5	fprintf(stderr, "Usage: %s [-h][-v][-c] infile [outfile]\n",
76	greg	1.1	progname);
77			exit(1);
78			}
79			if ((fin = fopen(argv[i], "r")) == NULL) {
80			fprintf(stderr, "%s: cannot open\n", argv[1]);
81			exit(1);
82			}
83			if (i < argc-1 && freopen(argv[i+1], "w", stdout) == NULL) {
84			fprintf(stderr, "%s: cannot open\n", argv[i+1]);
85			exit(1);
86			}
87			/* transfer header */
88	greg	2.4	if ((rval = checkheader(fin, picfmt, stdout)) < 0) {
89	greg	1.4	fprintf(stderr, "%s: input not a Radiance picture\n",
90			progname);
91			exit(1);
92			}
93	greg	2.4	if (rval)
94			fputformat(picfmt, stdout);
95	greg	1.1	/* add new header info. */
96	greg	1.2	printargs(i, argv, stdout);
97	greg	1.1	putchar('\n');
98			/* get picture size */
99	greg	1.5	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
100	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
101			exit(1);
102			}
103			/* write new picture size */
104	greg	1.5	fputresolu(neworder(), xres, yres, stdout);
105	greg	1.1	/* goto end if vertical flip */
106			if (fvert)
107			scanfile();
108			flip(); /* flip the image */
109			exit(0);
110			}
111
112
113			memerr()
114			{
115			fprintf(stderr, "%s: out of memory\n", progname);
116			exit(1);
117			}
118
119
120			scanfile() /* scan to the end of file */
121			{
122			extern long ftell();
123			COLR *scanin;
124			int y;
125
126			if ((scanpos = (long )malloc(yressizeof(long))) == NULL)
127			memerr();
128			if ((scanin = (COLR )malloc(xressizeof(COLR))) == NULL)
129			memerr();
130	greg	2.3	for (y = yres-1; y > 0; y--) {
131	greg	1.1	scanpos[y] = ftell(fin);
132			if (freadcolrs(scanin, xres, fin) < 0) {
133			fprintf(stderr, "%s: read error\n", progname);
134			exit(1);
135			}
136			}
137	greg	2.3	scanpos[0] = ftell(fin);
138	greg	2.5	free((void *)scanin);
139	greg	1.1	}
140
141
142			flip() /* flip the picture */
143			{
144			COLR scanin, scanout;
145			int y;
146			register int x;
147
148			if ((scanin = (COLR )malloc(xressizeof(COLR))) == NULL)
149			memerr();
150			if (fhoriz) {
151			if ((scanout = (COLR )malloc(xressizeof(COLR))) == NULL)
152			memerr();
153			} else
154			scanout = scanin;
155			for (y = yres-1; y >= 0; y--) {
156			if (fvert && fseek(fin, scanpos[yres-1-y], 0) == EOF) {
157			fprintf(stderr, "%s: seek error\n", progname);
158			exit(1);
159			}
160			if (freadcolrs(scanin, xres, fin) < 0) {
161			fprintf(stderr, "%s: read error\n", progname);
162			exit(1);
163			}
164			if (fhoriz)
165			for (x = 0; x < xres; x++)
166			copycolr(scanout[x], scanin[xres-1-x]);
167			if (fwritecolrs(scanout, xres, stdout) < 0) {
168			fprintf(stderr, "%s: write error\n", progname);
169			exit(1);
170			}
171			}
172	greg	2.5	free((void *)scanin);
173	greg	2.3	if (fhoriz)
174	greg	2.5	free((void *)scanout);
175	greg	1.1	}