123 lines
2.4 KiB
C
123 lines
2.4 KiB
C
/* im_mask2vips
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*
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* Author: J.Cupitt
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* Written on: 6/6/94
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* Modified on:
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* 7/10/94 JC
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* - new IM_ARRAY()
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* 1/2/10
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* - gtkdoc
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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., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 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 <glib/gi18n-lib.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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#include <vips/vips7compat.h>
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/**
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* im_mask2vips:
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* @in: input mask
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* @out: output image
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*
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* Write a one-band, %IM_BANDFMT_DOUBLE image to @out based on mask @in.
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*
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* See also: im_vips2mask().
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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_mask2vips( DOUBLEMASK *in, IMAGE *out )
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{
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int x, y;
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double *buf, *p, *q;
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/* Check the mask.
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*/
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if( !in ||
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!in->coeff ) {
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im_error( "im_mask2vips", "%s", _( "bad input mask" ) );
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return( -1 );
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}
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/* Make the output image.
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*/
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im_initdesc( out, in->xsize, in->ysize, 1,
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IM_BBITS_DOUBLE, IM_BANDFMT_DOUBLE,
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IM_CODING_NONE,
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IM_TYPE_B_W,
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1.0, 1.0,
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0, 0 );
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if( im_setupout( out ) )
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return( -1 );
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/* Make an output buffer.
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*/
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if( !(buf = IM_ARRAY( out, in->xsize, double )) )
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return( -1 );
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/* Write!
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*/
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for( p = in->coeff, y = 0; y < out->Ysize; y++ ) {
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q = buf;
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for( x = 0; x < out->Xsize; x++ )
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*q++ = *p++;
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if( im_writeline( y, out, (void *) buf ) )
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return( -1 );
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}
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vips_image_set_double( out, "scale", in->scale );
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vips_image_set_double( out, "offset", in->offset );
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return( 0 );
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}
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int
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im_imask2vips( INTMASK *in, IMAGE *out )
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{
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DOUBLEMASK *d;
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int result;
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if( !(d = im_imask2dmask( in, in->filename )) )
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return( -1 );
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result = im_mask2vips( d, out );
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im_free_dmask( d );
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return( result );
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}
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