1 /* Copyright (C) 1994, 1996, 1999 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: icolor.h,v 1.5 2002/06/16 04:47:10 lpd Exp $ */ 18 /* Declarations for transfer function & similar cache remapping */ 19 20 #ifndef icolor_INCLUDED 21 # define icolor_INCLUDED 22 23 /* 24 * Define the number of stack slots needed for zcolor_remap_one. 25 * The client is responsible for doing check_e/ostack or the equivalent 26 * before calling zcolor_remap_one. 27 */ 28 extern const int zcolor_remap_one_ostack; 29 extern const int zcolor_remap_one_estack; 30 31 /* 32 * Schedule the sampling and reloading of a cache. Note that if 33 * zcolor_remap_one recognize the procedure as being of a special form, it 34 * may not schedule anything, but it still returns o_push_estack. (This is 35 * a change as of release 5.95; formerly, it returned 0 in this case.) 36 */ 37 int zcolor_remap_one(i_ctx_t *, const ref *, gx_transfer_map *, 38 const gs_state *, op_proc_t); 39 40 /* Reload a cache with entries in [0..1] after sampling. */ 41 int zcolor_remap_one_finish(i_ctx_t *); 42 43 /* Reload a cache with entries in [-1..1] after sampling. */ 44 int zcolor_remap_one_signed_finish(i_ctx_t *); 45 46 /* Recompute the effective transfer functions and invalidate the current */ 47 /* color after cache reloading. */ 48 int zcolor_reset_transfer(i_ctx_t *); 49 50 /* Invalidate the current color after cache reloading. */ 51 int zcolor_remap_color(i_ctx_t *); 52 53 #endif /* icolor_INCLUDED */ 54