| /* @(#) Turn displayable rgb files to XYZ. |
| * @(#) |
| * @(#) Usage: |
| * @(#) im_disp2XYZ( imagein, imageout, display ) |
| * @(#) IMAGE *imagein, *imageout; |
| * @(#) struct im_col_display *display; |
| * @(#) |
| * @(#) uchar in, float out. |
| * @(#) |
| * @(#) Returns: -1 on error, else 0 |
| * Modified: |
| * 15/11/94 JC |
| * - memory leak fixed |
| * - error message added |
| * 16/11/94 JC |
| * - partialed |
| */ |
| |
| /* |
| |
| 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 <math.h> |
| |
| #include <vips/vips.h> |
| |
| #ifdef WITH_DMALLOC |
| #include <dmalloc.h> |
| #endif /*WITH_DMALLOC*/ |
| |
| /* Convert a buffer. |
| */ |
| void |
| imb_disp2XYZ( PEL *p, float *q, int n, struct im_col_display *d ) |
| { |
| int x; |
| |
| for( x = 0; x < n; x++ ) { |
| int r = p[0]; |
| int g = p[1]; |
| int b = p[2]; |
| float X, Y, Z; |
| p += 3; |
| |
| im_col_rgb2XYZ( d, r, g, b, &X, &Y, &Z ); |
| |
| q[0] = X; |
| q[1] = Y; |
| q[2] = Z; |
| q += 3; |
| } |
| } |
| |
| int |
| im_disp2XYZ( IMAGE *in, IMAGE *out, struct im_col_display *d ) |
| { |
| /* Check input image. |
| */ |
| if( in->Bands != 3 || in->BandFmt != IM_BANDFMT_UCHAR || |
| in->Coding != IM_CODING_NONE ) { |
| im_error( "im_disp2XYZ", |
| "%s", _( "input not 3-band uncoded char" ) ); |
| return( -1 ); |
| } |
| |
| /* Prepare the output image |
| */ |
| if( im_cp_desc( out, in ) ) |
| return( -1 ); |
| out->BandFmt = IM_BANDFMT_FLOAT; |
| out->Type = IM_TYPE_XYZ; |
| |
| /* Do the processing. |
| */ |
| if( im_wrapone( in, out, |
| (im_wrapone_fn) imb_disp2XYZ, d, NULL ) ) |
| return( -1 ); |
| |
| return( 0 ); |
| } |
