94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
/* copy an image to a file and then copy that to the output ... a disc cache
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*
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* 16/10/09
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* - from im_system()
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif /*HAVE_UNISTD_H*/
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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#include <vips/vips.h>
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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/**
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* im_copy_file:
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* @in: input image
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* @out: output image
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*
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* Copy an image to a disc file, then copy again to output. If the image is
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* already a disc file, just copy straight through.
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*
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* The disc file is allocated in the same way as im_system_image().
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* The file is automatically deleted when @out is closed.
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*
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* See also: im_copy(), im_system_image().
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*
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* Returns: 0 on success, -1 on error
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*/
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int
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im_copy_file( IMAGE *in, IMAGE *out )
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{
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if( !im_isfile( in ) ) {
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IMAGE *disc;
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if( !(disc = im__open_temp( "%s.v" )) )
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return( -1 );
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if( im_add_close_callback( out,
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(im_callback_fn) im_close, disc, NULL ) ) {
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im_close( disc );
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return( -1 );
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}
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if( im_copy( in, disc ) ||
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im_copy( disc, out ) )
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return( -1 );
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}
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else {
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if( im_copy( in, out ) )
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return( -1 );
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}
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return( 0 );
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}
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