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#ifndef lint
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static const char RCSid[] = "$Id$";
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#endif
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/*
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* Read and write image resolutions.
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*
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* Externals declared in resolu.h
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*/
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/* ====================================================================
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* The Radiance Software License, Version 1.0
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*
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* Copyright (c) 1990 - 2002 The Regents of the University of California,
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* through Lawrence Berkeley National Laboratory. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes Radiance software
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* (http://radsite.lbl.gov/)
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* developed by the Lawrence Berkeley National Laboratory
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* (http://www.lbl.gov/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
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* and "The Regents of the University of California" must
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* not be used to endorse or promote products derived from this
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* software without prior written permission. For written
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* permission, please contact [email protected].
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*
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* 5. Products derived from this software may not be called "Radiance",
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* nor may "Radiance" appear in their name, without prior written
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* permission of Lawrence Berkeley National Laboratory.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more
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* information on Lawrence Berkeley National Laboratory, please see
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* <http://www.lbl.gov/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include "resolu.h"
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char resolu_buf[RESOLU_BUFLEN]; /* resolution line buffer */
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void
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fputresolu(ord, sl, ns, fp) /* put out picture dimensions */
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int ord; /* scanline ordering */
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int sl, ns; /* scanline length and number */
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FILE *fp;
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{
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RESOLU rs;
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if ((rs.rt = ord) & YMAJOR) {
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rs.xr = sl;
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rs.yr = ns;
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} else {
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rs.xr = ns;
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rs.yr = sl;
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}
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fputsresolu(&rs, fp);
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}
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int
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fgetresolu(sl, ns, fp) /* get picture dimensions */
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int *sl, *ns; /* scanline length and number */
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FILE *fp;
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{
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RESOLU rs;
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if (!fgetsresolu(&rs, fp))
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return(-1);
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if (rs.rt & YMAJOR) {
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*sl = rs.xr;
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*ns = rs.yr;
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} else {
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*sl = rs.yr;
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*ns = rs.xr;
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}
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return(rs.rt);
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}
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char *
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resolu2str(buf, rp) /* convert resolution struct to line */
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char *buf;
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register RESOLU *rp;
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{
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if (rp->rt&YMAJOR)
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sprintf(buf, "%cY %d %cX %d\n",
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rp->rt&YDECR ? '-' : '+', rp->yr,
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rp->rt&XDECR ? '-' : '+', rp->xr);
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else
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sprintf(buf, "%cX %d %cY %d\n",
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rp->rt&XDECR ? '-' : '+', rp->xr,
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rp->rt&YDECR ? '-' : '+', rp->yr);
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return(buf);
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}
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int
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str2resolu(rp, buf) /* convert resolution line to struct */
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register RESOLU *rp;
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char *buf;
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{
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register char *xndx, *yndx;
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register char *cp;
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if (buf == NULL)
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return(0);
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xndx = yndx = NULL;
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for (cp = buf; *cp; cp++)
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if (*cp == 'X')
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xndx = cp;
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else if (*cp == 'Y')
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yndx = cp;
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if (xndx == NULL || yndx == NULL)
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return(0);
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rp->rt = 0;
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if (xndx > yndx) rp->rt |= YMAJOR;
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if (xndx[-1] == '-') rp->rt |= XDECR;
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if (yndx[-1] == '-') rp->rt |= YDECR;
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if ((rp->xr = atoi(xndx+1)) <= 0)
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return(0);
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if ((rp->yr = atoi(yndx+1)) <= 0)
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return(0);
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return(1);
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}
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