libvips/libsrc/mosaicing/im_remosaic.c

137 lines
3.0 KiB
C
Raw Normal View History

2007-08-29 18:23:50 +02:00
/* Use one mosiaced file to mosaic another set of images.
*
* 1/11/01 JC
* - from global_balance
* 25/02/02 JC
* - detect size change
* 10/4/06
* - spot file-not-found
*/
/*
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
*/
/* Define for debug output.
#define DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <math.h>
#include <vips/vips.h>
#include "merge.h"
#include "global_balance.h"
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif /*WITH_DMALLOC*/
typedef struct _RemosaicData {
const char *old_str;
const char *new_str;
int new_len;
int old_len;
} RemosaicData;
static IMAGE *
remosaic( JoinNode *node, RemosaicData *rd )
{
SymbolTable *st = node->st;
IMAGE *im = node->im;
IMAGE *out;
char filename[FILENAME_MAX];
char *p;
if( !im ) {
im_error( "im_remosaic", _( "file \"%s\" not found" ),
node->name );
return( NULL );
}
/* Remove substring rd->old_str from in->filename, replace with
* rd->new_str.
*/
im_strncpy( filename, im->filename, FILENAME_MAX );
if( (p = im_strrstr( filename, rd->old_str )) ) {
int offset = p - &filename[0];
im_strncpy( p, rd->new_str, FILENAME_MAX - offset );
im_strncpy( p + rd->new_len,
im->filename + offset + rd->old_len,
FILENAME_MAX - offset - rd->new_len );
}
#ifdef DEBUG
printf( "im_remosaic: filename \"%s\" -> \"%s\"\n",
im->filename, filename );
#endif /*DEBUG*/
if( !(out = im__global_open_image( st, filename )) )
return( NULL );
if( out->Xsize != im->Xsize || out->Ysize != im->Ysize ) {
im_error( "im_remosaic",
_( "substitute image \"%s\" is not "
"the same size as \"%s\"" ),
filename, im->filename );
return( NULL );
}
return( out );
}
int
im_remosaic( IMAGE *in, IMAGE *out, const char *old_str, const char *new_str )
{
SymbolTable *st;
RemosaicData rd;
if( !(st = im__build_symtab( out, SYM_TAB_SIZE )) ||
im__parse_desc( st, in ) )
return( -1 );
/* Re-make mosaic.
*/
rd.old_str = old_str;
rd.new_str = new_str;
rd.new_len = strlen( new_str );
rd.old_len = strlen( old_str );
if( im__build_mosaic( st, out, (transform_fn) remosaic, &rd ) )
return( -1 );
return( 0 );
}