95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
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/* @(#) Extract a tile from a pyramid as a jpeg
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* @(#)
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* @(#) int
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* @(#) im_bernd( const char *tiffname,
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* @(#) int x, int y, int w, int h )
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* @(#)
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* @(#)
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* @(#) Returns 0 on success and -1 on error
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* @(#)
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*
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* 7/5/99 JC
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* - from im_tiff2vips and im_vips2jpeg, plus some stuff from Steve
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* 11/7/01 JC
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* - page number now in filename
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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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#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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static int
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extract( IMAGE *in, int x, int y, int w, int h )
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{
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int len;
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char *buf;
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IMAGE *t1 = im_open_local( in, "im_bernd:2", "p" );
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if( im_extract_area( in, t1, x, y, w, h ) ||
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im_vips2bufjpeg( t1, in, 75, &buf, &len ) )
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return( -1 );
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fwrite( buf, sizeof( char ), len, stdout );
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fflush( stdout );
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if( ferror( stdout ) ) {
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im_errormsg( "im_bernd: error writing output" );
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return( -1 );
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}
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return( 0 );
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}
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int
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im_bernd( const char *tiffname, int x, int y, int w, int h )
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{
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IMAGE *in;
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if( !(in = im_open( "im_bernd:1", "p" )) )
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return( -1 );
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if( im_tiff2vips( tiffname, in ) ||
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extract( in, x, y, w, h ) ) {
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im_close( in );
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return( -1 );
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}
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im_close( in );
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return( 0 );
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}
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