215 lines
4.2 KiB
C
215 lines
4.2 KiB
C
/* Derived colour space functions.
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*
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* 14/9/95 JC
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* - horrible error killed im_dE_fromXYZ() and im_dE_fromdisp()
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* 4/3/98 JC
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* - sRGB added
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* 17/6/99 JC
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* - minor reformatting
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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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/* LabQ to XYZ.
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*/
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int
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im_LabQ2XYZ( IMAGE *in, IMAGE *out )
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{
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IMAGE *t1;
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if( !(t1 = im_open_local( out, "im_LabQ2XYZ:1", "p" )) ||
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im_LabQ2Lab( in, t1 ) ||
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im_Lab2XYZ( t1, out ) )
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return( -1 );
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return( 0 );
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}
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/* Lab to UCS.
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*/
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int
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im_Lab2UCS( IMAGE *in, IMAGE *out )
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{
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IMAGE *t1;
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if( !(t1 = im_open_local( out, "im_Lab2UCS:1", "p" )) ||
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im_Lab2LCh( in, t1 ) ||
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im_LCh2UCS( t1, out ) )
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return( -1 );
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return( 0 );
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}
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int
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im_UCS2Lab( IMAGE *in, IMAGE *out )
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{
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IMAGE *t1;
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if( !(t1 = im_open_local( out, "im_UCS2Lab intermediate", "p" )) ||
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im_UCS2LCh( in, t1 ) ||
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im_LCh2Lab( t1, out ) )
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return( -1 );
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return( 0 );
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}
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int
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im_UCS2XYZ( IMAGE *in, IMAGE *out )
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{
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IMAGE *t1;
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if( !(t1 = im_open_local( out, "im_UCS2XYZ intermediate", "p" )) ||
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im_UCS2Lab( in, t1 ) ||
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im_Lab2XYZ( t1, out ) )
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return( -1 );
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return( 0 );
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}
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int
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im_XYZ2UCS( IMAGE *in, IMAGE *out )
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{
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IMAGE *t1;
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if( !(t1 = im_open_local( out, "im_XYZ2UCS intermediate", "p" )) ||
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im_XYZ2Lab( in, t1 ) ||
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im_Lab2UCS( t1, out ) )
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return( -1 );
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return( 0 );
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}
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int
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im_Lab2disp( IMAGE *in, IMAGE *out, struct im_col_display *disp )
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{
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IMAGE *t1;
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if( !(t1 = im_open_local( out, "im_Lab2disp:1", "p" )) ||
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im_Lab2XYZ( in, t1 ) ||
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im_XYZ2disp( t1, out, disp ) )
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return( -1 );
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return( 0 );
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}
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int
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im_XYZ2sRGB( IMAGE *in, IMAGE *out )
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{
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if( im_XYZ2disp( in, out, im_col_displays( 7 ) ) )
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return( -1 );
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out->Type = IM_TYPE_sRGB;
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return( 0 );
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}
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int
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im_sRGB2XYZ( IMAGE *in, IMAGE *out )
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{
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if( im_disp2XYZ( in, out, im_col_displays( 7 ) ) )
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return( -1 );
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return( 0 );
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}
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int
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im_dECMC_fromdisp( IMAGE *im1, IMAGE *im2,
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IMAGE *out, struct im_col_display *d )
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{
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IMAGE *t1, *t2, *t3, *t4;
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if( !(t1 = im_open_local( out, "im_dECMC_fromdisp:1", "p" )) ||
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!(t2 = im_open_local( out, "im_dECMC_fromdisp:2", "p" )) ||
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!(t3 = im_open_local( out, "im_dECMC_fromdisp:3", "p" )) ||
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!(t4 = im_open_local( out, "im_dECMC_fromdisp:4", "p" )) ||
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im_disp2XYZ( im1, t1, d ) ||
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im_XYZ2Lab( t1, t2 ) ||
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im_disp2XYZ( im2, t3, d ) ||
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im_XYZ2Lab( t3, t4 ) ||
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im_dECMC_fromLab( t2, t4, out ) )
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return( -1 );
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return( 0 );
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}
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int
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im_dE_fromXYZ( IMAGE *im1, IMAGE *im2, IMAGE *out )
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{
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IMAGE *t1, *t2;
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if( !(t1 = im_open_local( out, "im_dE_fromXYZ:1", "p" )) ||
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!(t2 = im_open_local( out, "im_dE_fromXYZ:2", "p" )) ||
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im_XYZ2Lab( im1, t1 ) ||
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im_XYZ2Lab( im2, t2 ) ||
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im_dE_fromLab( t1, t2, out ) )
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return( -1 );
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return( 0 );
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}
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int
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im_dE_fromdisp( IMAGE *im1, IMAGE *im2, IMAGE *out, struct im_col_display *d )
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{
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IMAGE *t1, *t2;
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if( !(t1 = im_open_local( out, "im_dE_fromdisp:1", "p" )) ||
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!(t2 = im_open_local( out, "im_dE_fromdisp:2", "p" )) ||
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im_disp2XYZ( im1, t1, d ) ||
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im_disp2XYZ( im2, t2, d ) ||
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im_dE_fromXYZ( t1, t2, out ) )
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return( -1 );
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return( 0 );
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}
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int
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im_disp2Lab( IMAGE *in, IMAGE *out, struct im_col_display *d )
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{
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IMAGE *t1;
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if( !(t1 = im_open_local( out, "im_disp2Lab:1", "p" )) ||
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im_disp2XYZ( in, t1, d ) ||
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im_XYZ2Lab( t1, out ) )
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return( -1 );
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return( 0 );
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}
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