1 /* Copyright (C) 1994, 1998 Aladdin Enterprises. All rights reserved. 2 3 This software is provided AS-IS with no warranty, either express or 4 implied. 5 6 This software is distributed under license and may not be copied, 7 modified or distributed except as expressly authorized under the terms 8 of the license contained in the file LICENSE in this distribution. 9 10 For more information about licensing, please refer to 11 http://www.ghostscript.com/licensing/. For information on 12 commercial licensing, go to http://www.artifex.com/licensing/ or 13 contact Artifex Software, Inc., 101 Lucas Valley Road #110, 14 San Rafael, CA 94903, U.S.A., +1(415)492-9861. 15 */ 16 17 /* $Id: gxtmap.h,v 1.5 2002/06/16 08:45:43 lpd Exp $ */ 18 /* Definition of transfer mapping function */ 19 /* (also used for black generation and undercolor removal) */ 20 21 #ifndef gxtmap_INCLUDED 22 # define gxtmap_INCLUDED 23 24 /* Common definition for mapping procedures. */ 25 /* These are used for transfer functions, black generation, */ 26 /* and undercolor removal. */ 27 /* gx_transfer_map should probably be renamed gx_mapping_cache.... */ 28 29 /* Define an abstract type for a transfer map. */ 30 typedef struct gx_transfer_map_s gx_transfer_map; 31 32 /* 33 * Define the type of a mapping procedure. There are two forms of this. 34 * The original form passed only the transfer map itself as an argument: 35 */ 36 typedef float (*gs_mapping_proc) (floatp, const gx_transfer_map *); 37 38 /* 39 * Later, we recognized that this procedure should really be a general 40 * closure: 41 */ 42 typedef float (*gs_mapping_closure_proc_t) (floatp value, 43 const gx_transfer_map * pmap, 44 const void *proc_data); 45 typedef struct gs_mapping_closure_s { 46 gs_mapping_closure_proc_t proc; 47 const void *data; 48 } gs_mapping_closure_t; 49 50 #endif /* gxtmap_INCLUDED */ 51