104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
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/* As im_wrapmany, but just allow one input and one output.
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*
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* The types become:
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*
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* int im_wrapone( IMAGE *in, IMAGE *out,
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* im_wrapone_fn fn, void *a, void *b )
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*
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* where im_wrapone_fn has type:
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*
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* process_buffer( void *in, void *out, int n,
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* void *a, void *b )
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* 28/7/97 JC
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* - amazing error ... failed if or and ir were different sizes
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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 <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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typedef struct {
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im_wraptwo_fn fn; /* Function we call */
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void *a, *b; /* User values for function */
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} UserBundle;
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/* Build or->valid a line at a time from ir.
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*/
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static int
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process_region( REGION *or, void *seq, void *unrequired, void *b )
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{
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if( im_prepare_many( (REGION**)seq, & or-> valid ))
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return -1;
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{
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void *out= IM_REGION_ADDR_TOPLEFT( or );
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void *in1= IM_REGION_ADDR( ((REGION**)seq)[0], or-> valid. left, or-> valid. top );
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void *in2= IM_REGION_ADDR( ((REGION**)seq)[1], or-> valid. left, or-> valid. top );
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size_t out_skip= IM_REGION_LSKIP( or );
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size_t in1_skip= IM_REGION_LSKIP( ((REGION**)seq)[0] );
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size_t in2_skip= IM_REGION_LSKIP( ((REGION**)seq)[1] );
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void *out_stop= out + out_skip * or-> valid. height;
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for( ; out < out_stop; out+= out_skip, in1+= in1_skip, in2+= in2_skip )
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((UserBundle*) b)-> fn( in1, in2, out, or-> valid. width, ((UserBundle*) b)-> a, ((UserBundle*) b)-> b );
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return 0;
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}
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}
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/* Wrap up as a partial.
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*/
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int
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im_wraptwo( IMAGE *in1, IMAGE *in2, IMAGE *out, im_wraptwo_fn fn, void *a, void *b )
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{
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if( im_pincheck( in1 ) || im_pincheck( in2 ) || im_poutcheck( out ))
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return -1;
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{
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UserBundle *bun= IM_NEW( out, UserBundle );
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IMAGE **ins= im_allocate_input_array( out, in1, in2, NULL );
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if( ! bun || ! ins )
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return -1;
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bun-> fn= fn;
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bun-> a= a;
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bun-> b= b;
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return im_demand_hint( out, IM_THINSTRIP, in1, in2, NULL )
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|| im_generate( out, im_start_many, process_region, im_stop_many, (void*) ins, (void*) bun );
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}
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}
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