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/* Copyright (C) 1994, 1996, 1999 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: icolor.h,v 1.5 2002/06/16 04:47:10 lpd Exp $ */
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/* Declarations for transfer function & similar cache remapping */
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#ifndef icolor_INCLUDED
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# define icolor_INCLUDED
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/*
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* Define the number of stack slots needed for zcolor_remap_one.
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* The client is responsible for doing check_e/ostack or the equivalent
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* before calling zcolor_remap_one.
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*/
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extern const int zcolor_remap_one_ostack;
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extern const int zcolor_remap_one_estack;
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/*
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* Schedule the sampling and reloading of a cache. Note that if
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* zcolor_remap_one recognize the procedure as being of a special form, it
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* may not schedule anything, but it still returns o_push_estack. (This is
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* a change as of release 5.95; formerly, it returned 0 in this case.)
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*/
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int zcolor_remap_one(i_ctx_t *, const ref *, gx_transfer_map *,
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const gs_state *, op_proc_t);
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/* Reload a cache with entries in [0..1] after sampling. */
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int zcolor_remap_one_finish(i_ctx_t *);
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/* Reload a cache with entries in [-1..1] after sampling. */
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int zcolor_remap_one_signed_finish(i_ctx_t *);
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/* Recompute the effective transfer functions and invalidate the current */
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/* color after cache reloading. */
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int zcolor_reset_transfer(i_ctx_t *);
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/* Invalidate the current color after cache reloading. */
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int zcolor_remap_color(i_ctx_t *);
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#endif /* icolor_INCLUDED */
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