lum.h
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- /* $Id: lum.h,v 1.1.1.1 2005/11/11 21:32:03 faxguy Exp $ */
- /*
- * Copyright (c) 1990-1996 Sam Leffler
- * Copyright (c) 1991-1996 Silicon Graphics, Inc.
- * HylaFAX is a trademark of Silicon Graphics
- * HylaFAX is a trademark of Silicon Graphics
- *
- * Permission to use, copy, modify, distribute, and sell this software and
- * its documentation for any purpose is hereby granted without fee, provided
- * that (i) the above copyright notices and this permission notice appear in
- * all copies of the software and related documentation, and (ii) the names of
- * Sam Leffler and Silicon Graphics may not be used in any advertising or
- * publicity relating to the software without the specific, prior written
- * permission of Sam Leffler and Silicon Graphics.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
- * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
- * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
- * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
- * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
- #ifndef LUMDEF
- #define LUMDEF
- #define RLUM (0.3086)
- #define GLUM (0.6094)
- #define BLUM (0.0820)
- #define _RED (79)
- #define _GREEN (156)
- #define _BLUE (21)
- #ifdef OLDWAY
- #define RLUM (0.299)
- #define GLUM (0.587)
- #define BLUM (0.114)
- #define _RED (77)
- #define _GREEN (150)
- #define _BLUE (29)
- #endif
- #define ILUM(r,g,b) ((_RILUM*(r)+_GILUM*(g)+_BILUM*(b))>>8)
- #define LUM(r,g,b) (RLUM*(r)+GLUM*(g)+BLUM*(b))
- extern int _RILUM, _GILUM, _BILUM;
- #endif /* LUMDEF */