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/* im_mask2vips
*
* Author: J.Cupitt
* Written on: 6/6/94
* Modified on:
* 7/10/94 JC
* - new IM_ARRAY()
* 1/2/10
* - gtkdoc
*/
/*
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., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <stdlib.h>
#include <vips/vips.h>
/**
* im_mask2vips:
* @in: input mask
* @out: output image
*
* Write a one-band, %IM_BANDFMT_DOUBLE image to @out based on mask @in.
*
* See also: im_vips2mask().
*
* Returns: 0 on success, -1 on error
*/
int
im_mask2vips( DOUBLEMASK *in, IMAGE *out )
{
int x, y;
double *buf, *p, *q;
/* Check the mask.
*/
if( !in ||
!in->coeff ) {
im_error( "im_mask2vips", "%s", _( "bad input mask" ) );
return( -1 );
}
/* Make the output image.
*/
im_initdesc( out, in->xsize, in->ysize, 1,
IM_BBITS_DOUBLE, IM_BANDFMT_DOUBLE,
IM_CODING_NONE,
IM_TYPE_B_W,
1.0, 1.0,
0, 0 );
if( im_setupout( out ) )
return( -1 );
/* Make an output buffer.
*/
if( !(buf = IM_ARRAY( out, in->xsize, double )) )
return( -1 );
/* Write!
*/
for( p = in->coeff, y = 0; y < out->Ysize; y++ ) {
q = buf;
for( x = 0; x < out->Xsize; x++ )
*q++ = *p++;
if( im_writeline( y, out, (void *) buf ) )
return( -1 );
}
vips_image_set_double( out, "scale", in->scale );
vips_image_set_double( out, "offset", in->offset );
return( 0 );
}
int
im_imask2vips( INTMASK *in, IMAGE *out )
{
DOUBLEMASK *d;
int result;
if( !(d = im_imask2dmask( in, in->filename )) )
return( -1 );
result = im_mask2vips( d, out );
im_free_dmask( d );
return( result );
}
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