99 lines
2.0 KiB
C
99 lines
2.0 KiB
C
/* Turn UCS to LCh
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*
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* 15/11/94 JC
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* - error messages added
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* - memory leak fixed
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* 16/11/94 JC
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* - uses im_wrap_oneonebuf() now
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* 2/11/09
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* - gtkdoc
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* 30/11/09
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* - argh, im_col_make_tables_UCS(); missing, thanks Peter
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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 <math.h>
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#include <vips/vips.h>
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#include <vips/internal.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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/* Process a buffer of data.
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*/
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void
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imb_UCS2LCh( float *p, float *q, int n )
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{
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int x;
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for( x = 0; x < n; x++ ) {
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float Lucs = p[0];
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float Cucs = p[1];
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float hucs = p[2];
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/* Turn from UCS.
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*/
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float C = im_col_Cucs2C( Cucs );
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float h = im_col_Chucs2h( C, hucs );
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float L = im_col_Lucs2L( Lucs );
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p += 3;
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q[0] = L;
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q[1] = C;
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q[2] = h;
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q += 3;
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}
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}
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/**
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* im_UCS2LCh:
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* @in: input image
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* @out: output image
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*
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* Turn UCS to LCh.
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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_UCS2LCh( IMAGE *in, IMAGE *out )
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{
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im_col_make_tables_UCS();
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return( im__colour_unary( "im_UCS2LCh", in, out, IM_TYPE_LCH,
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(im_wrapone_fn) imb_UCS2LCh, NULL, NULL ) );
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}
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