libvips/libsrc/iofuncs/im_cp_desc.c

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/* @(#) Function which copies IMAGE descriptor image2 to image1;
* @(#) data, fd and filename are not copied
* @(#) used to make programs simpler by copying most parameters
* @(#)
* @(#) int
* @(#) im_cp_desc( image1, image2 )
* @(#) IMAGE *image1, *image2;
* @(#)
* @(#) Returns 0 on success or -1 on fail.
* @(#)
*
* Copyright: Nicos Dessipris
* Written on: 09/02/1990
* Modified on : 22/2/93 By Kirk Martinez: v6.3
* 28/10/1992 J.Cupitt
* - now calls im_cp_Hist, and hence frees old history correctly
* 10/5/93 J.Cupitt
* - checks return result from im_cp_Hist()
* 22/11/00 JC
* - ANSIfied
* 5/9/02 JC
* - copy Xoffset/Yoffset too
* 14/4/04 JC
* - hmm, in fact no, zero them
* 6/6/05 Markus Wollgarten
* - copy Meta
* 29/8/05
* - added im_cp_descv() and im_cp_desc_array()
* 2/9/05
* - simplified ... no more skip the first line stuff
* 4/1/07
* - merge hists with history_list instead
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
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#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <assert.h>
#include <stdarg.h>
#include <string.h>
#include <vips/vips.h>
#include <vips/internal.h>
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif /*WITH_DMALLOC*/
/* in is a NULL-termnated array of input images. Always at least one image
* there.
*/
int
im_cp_desc_array( IMAGE *out, IMAGE *in[] )
{
int i;
int ni;
assert( in[0] );
out->Xsize = in[0]->Xsize;
out->Ysize = in[0]->Ysize;
out->Bands = in[0]->Bands;
out->Bbits = in[0]->Bbits;
out->BandFmt = in[0]->BandFmt;
out->Type = in[0]->Type;
out->Coding = in[0]->Coding;
out->Xres = in[0]->Xres;
out->Yres = in[0]->Yres;
out->Xoffset = 0;
out->Yoffset = 0;
/* Count number of images.
*/
for( ni = 0; in[ni]; ni++ )
;
/* Need to copy last-to-first so that in0 meta will override any
* earlier meta.
*/
im__meta_destroy( out );
for( i = ni - 1; i >= 0; i-- )
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if( im__meta_cp( out, in[i] ) )
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return( -1 );
/* Merge hists first to last.
*/
for( i = 0; in[i]; i++ )
out->history_list = im__gslist_gvalue_merge( out->history_list,
in[i]->history_list );
return( 0 );
}
/* Max number of images we can handle.
*/
#define MAX_IMAGES (1000)
int
im_cp_descv( IMAGE *out, IMAGE *in1, ... )
{
va_list ap;
int i;
IMAGE *in[MAX_IMAGES];
in[0] = in1;
va_start( ap, in1 );
for( i = 1; i < MAX_IMAGES && (in[i] = va_arg( ap, IMAGE * )); i++ )
;
va_end( ap );
if( i == MAX_IMAGES ) {
im_error( "im_cp_descv", _( "too many images" ) );
return( -1 );
}
return( im_cp_desc_array( out, in ) );
}
int
im_cp_desc( IMAGE *dest, IMAGE *src )
{
return( im_cp_descv( dest, src, NULL ) );
}