src/common/resolu.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 * Read and write image resolutions.
 *
 * Externals declared in resolu.h
 */

/* ====================================================================
 * The Radiance Software License, Version 1.0
 *
 * Copyright (c) 1990 - 2002 The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory.   All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *         notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *           if any, must include the following acknowledgment:
 *             "This product includes Radiance software
 *                 (http://radsite.lbl.gov/)
 *                 developed by the Lawrence Berkeley National Laboratory
 *               (http://www.lbl.gov/)."
 *       Alternately, this acknowledgment may appear in the software itself,
 *       if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
 *       and "The Regents of the University of California" must
 *       not be used to endorse or promote products derived from this
 *       software without prior written permission. For written
 *       permission, please contact [email protected].
 *
 * 5. Products derived from this software may not be called "Radiance",
 *       nor may "Radiance" appear in their name, without prior written
 *       permission of Lawrence Berkeley National Laboratory.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
 * information on Lawrence Berkeley National Laboratory, please see
 * <http://www.lbl.gov/>.
 */

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

#include "resolu.h"


char  resolu_buf[RESOLU_BUFLEN];        /* resolution line buffer */


void
fputresolu(ord, sl, ns, fp)             /* put out picture dimensions */
int  ord;                       /* scanline ordering */
int  sl, ns;                    /* scanline length and number */
FILE  *fp;
{
        RESOLU  rs;

        if ((rs.rt = ord) & YMAJOR) {
                rs.xr = sl;
                rs.yr = ns;
        } else {
                rs.xr = ns;
                rs.yr = sl;
        }
        fputsresolu(&rs, fp);
}


int
fgetresolu(sl, ns, fp)                  /* get picture dimensions */
int  *sl, *ns;                  /* scanline length and number */
FILE  *fp;
{
        RESOLU  rs;

        if (!fgetsresolu(&rs, fp))
                return(-1);
        if (rs.rt & YMAJOR) {
                *sl = rs.xr;
                *ns = rs.yr;
        } else {
                *sl = rs.yr;
                *ns = rs.xr;
        }
        return(rs.rt);
}


char *
resolu2str(buf, rp)             /* convert resolution struct to line */
char  *buf;
register RESOLU  *rp;
{
        if (rp->rt&YMAJOR)
                sprintf(buf, "%cY %d %cX %d\n",
                                rp->rt&YDECR ? '-' : '+', rp->yr,
                                rp->rt&XDECR ? '-' : '+', rp->xr);
        else
                sprintf(buf, "%cX %d %cY %d\n",
                                rp->rt&XDECR ? '-' : '+', rp->xr,
                                rp->rt&YDECR ? '-' : '+', rp->yr);
        return(buf);
}


int
str2resolu(rp, buf)             /* convert resolution line to struct */
register RESOLU  *rp;
char  *buf;
{
        register char  *xndx, *yndx;
        register char  *cp;

        if (buf == NULL)
                return(0);
        xndx = yndx = NULL;
        for (cp = buf; *cp; cp++)
                if (*cp == 'X')
                        xndx = cp;
                else if (*cp == 'Y')
                        yndx = cp;
        if (xndx == NULL || yndx == NULL)
                return(0);
        rp->rt = 0;
        if (xndx > yndx) rp->rt |= YMAJOR;
        if (xndx[-1] == '-') rp->rt |= XDECR;
        if (yndx[-1] == '-') rp->rt |= YDECR;
        if ((rp->xr = atoi(xndx+1)) <= 0)
                return(0);
        if ((rp->yr = atoi(yndx+1)) <= 0)
                return(0);
        return(1);
}
Revision:	2.3
Committed:	Sat Feb 22 02:07:22 2003 UTC (21 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.2:	+76 -16 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	2.3	static const char RCSid[] = "$Id$";
3	greg	1.1	#endif
4			/*
5			* Read and write image resolutions.
6	greg	2.3	*
7			* Externals declared in resolu.h
8			*/
9
10			/* ====================================================================
11			* The Radiance Software License, Version 1.0
12			*
13			* Copyright (c) 1990 - 2002 The Regents of the University of California,
14			* through Lawrence Berkeley National Laboratory. All rights reserved.
15			*
16			* Redistribution and use in source and binary forms, with or without
17			* modification, are permitted provided that the following conditions
18			* are met:
19			*
20			* 1. Redistributions of source code must retain the above copyright
21			* notice, this list of conditions and the following disclaimer.
22			*
23			* 2. Redistributions in binary form must reproduce the above copyright
24			* notice, this list of conditions and the following disclaimer in
25			* the documentation and/or other materials provided with the
26			* distribution.
27			*
28			* 3. The end-user documentation included with the redistribution,
29			* if any, must include the following acknowledgment:
30			* "This product includes Radiance software
31			* (http://radsite.lbl.gov/)
32			* developed by the Lawrence Berkeley National Laboratory
33			* (http://www.lbl.gov/)."
34			* Alternately, this acknowledgment may appear in the software itself,
35			* if and wherever such third-party acknowledgments normally appear.
36			*
37			* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
38			* and "The Regents of the University of California" must
39			* not be used to endorse or promote products derived from this
40			* software without prior written permission. For written
41			* permission, please contact [email protected].
42			*
43			* 5. Products derived from this software may not be called "Radiance",
44			* nor may "Radiance" appear in their name, without prior written
45			* permission of Lawrence Berkeley National Laboratory.
46			*
47			* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
48			* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49			* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
50			* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
51			* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
52			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
53			* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
54			* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
55			* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
56			* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
57			* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58			* SUCH DAMAGE.
59			* ====================================================================
60			*
61			* This software consists of voluntary contributions made by many
62			* individuals on behalf of Lawrence Berkeley National Laboratory. For more
63			* information on Lawrence Berkeley National Laboratory, please see
64			* <http://www.lbl.gov/>.
65	greg	1.1	*/
66
67			#include <stdio.h>
68	greg	2.3	#include <stdlib.h>
69			#include <time.h>
70	greg	1.1
71	greg	1.2	#include "resolu.h"
72	greg	1.1
73
74	greg	1.2	char resolu_buf[RESOLU_BUFLEN]; /* resolution line buffer */
75
76
77	greg	2.3	void
78	greg	1.2	fputresolu(ord, sl, ns, fp) /* put out picture dimensions */
79			int ord; /* scanline ordering */
80			int sl, ns; /* scanline length and number */
81	greg	1.1	FILE *fp;
82			{
83	greg	1.2	RESOLU rs;
84
85	greg	2.3	if ((rs.rt = ord) & YMAJOR) {
86	greg	1.2	rs.xr = sl;
87			rs.yr = ns;
88			} else {
89			rs.xr = ns;
90			rs.yr = sl;
91			}
92			fputsresolu(&rs, fp);
93	greg	1.1	}
94
95
96	greg	1.2	int
97			fgetresolu(sl, ns, fp) /* get picture dimensions */
98			int sl, ns; /* scanline length and number */
99	greg	1.1	FILE *fp;
100			{
101	greg	1.2	RESOLU rs;
102
103			if (!fgetsresolu(&rs, fp))
104			return(-1);
105	greg	2.3	if (rs.rt & YMAJOR) {
106	greg	1.2	*sl = rs.xr;
107			*ns = rs.yr;
108			} else {
109			*sl = rs.yr;
110			*ns = rs.xr;
111			}
112	greg	2.3	return(rs.rt);
113	greg	1.2	}
114
115
116			char *
117			resolu2str(buf, rp) /* convert resolution struct to line */
118			char *buf;
119			register RESOLU *rp;
120			{
121	greg	2.3	if (rp->rt&YMAJOR)
122	greg	1.2	sprintf(buf, "%cY %d %cX %d\n",
123	greg	2.3	rp->rt&YDECR ? '-' : '+', rp->yr,
124			rp->rt&XDECR ? '-' : '+', rp->xr);
125	greg	1.2	else
126			sprintf(buf, "%cX %d %cY %d\n",
127	greg	2.3	rp->rt&XDECR ? '-' : '+', rp->xr,
128			rp->rt&YDECR ? '-' : '+', rp->yr);
129	greg	1.2	return(buf);
130			}
131
132
133	greg	2.3	int
134	greg	1.2	str2resolu(rp, buf) /* convert resolution line to struct */
135			register RESOLU *rp;
136			char *buf;
137			{
138	greg	2.2	register char xndx, yndx;
139	greg	1.1	register char *cp;
140
141	greg	1.2	if (buf == NULL)
142			return(0);
143	greg	1.1	xndx = yndx = NULL;
144	greg	2.2	for (cp = buf; *cp; cp++)
145	greg	1.1	if (*cp == 'X')
146			xndx = cp;
147			else if (*cp == 'Y')
148			yndx = cp;
149			if (xndx == NULL \|\| yndx == NULL)
150	greg	1.2	return(0);
151	greg	2.3	rp->rt = 0;
152			if (xndx > yndx) rp->rt \|= YMAJOR;
153			if (xndx[-1] == '-') rp->rt \|= XDECR;
154			if (yndx[-1] == '-') rp->rt \|= YDECR;
155	greg	1.2	if ((rp->xr = atoi(xndx+1)) <= 0)
156			return(0);
157			if ((rp->yr = atoi(yndx+1)) <= 0)
158			return(0);
159			return(1);
160	greg	1.1	}