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/* Copyright (C) 1997, 1998 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: gsfunc3.h,v 1.5 2002/06/16 08:45:42 lpd Exp $ */
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/* Definitions for LL3 Functions */
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#ifndef gsfunc3_INCLUDED
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# define gsfunc3_INCLUDED
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#include "gsfunc.h"
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#include "gsdsrc.h"
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/* ---------------- Types and structures ---------------- */
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/*
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* Define the Function types.
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* See gsfunc.h for why gs_function_type_t can't be an enum type.
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*/
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enum {
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function_type_ExponentialInterpolation = 2,
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function_type_1InputStitching = 3,
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/* For internal use only */
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function_type_ArrayedOutput = -1
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};
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/* Define Exponential Interpolation functions. */
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typedef struct gs_function_ElIn_params_s {
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gs_function_params_common;
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const float *C0; /* n, optional */
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const float *C1; /* n, optional */
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float N;
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} gs_function_ElIn_params_t;
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#define private_st_function_ElIn() /* in gsfunc.c */\
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gs_private_st_suffix_add2(st_function_ElIn, gs_function_ElIn_t,\
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"gs_function_ElIn_t", function_ElIn_enum_ptrs, function_ElIn_reloc_ptrs,\
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st_function, params.C0, params.C1)
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/* Define 1-Input Stitching functions. */
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typedef struct gs_function_1ItSg_params_s {
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gs_function_params_common;
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int k;
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const gs_function_t *const *Functions; /* k */
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const float *Bounds; /* k - 1 */
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const float *Encode; /* 2 x k */
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} gs_function_1ItSg_params_t;
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#define private_st_function_1ItSg() /* in gsfunc.c */\
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gs_private_st_suffix_add3(st_function_1ItSg, gs_function_1ItSg_t,\
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"gs_function_1ItSg_t", function_1ItSg_enum_ptrs, function_1ItSg_reloc_ptrs,\
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st_function, params.Functions, params.Bounds, params.Encode)
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/*
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* Define Arrayed Output functions. These consist of n m x 1 functions
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* whose outputs are assembled into the output of the arrayed function.
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* We use them to handle certain PostScript constructs that can accept
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* either a single n-output function or n 1-output functions.
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*
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* Note that for this type, and only this type, both Domain and Range
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* are ignored (0).
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*/
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typedef struct gs_function_AdOt_params_s {
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gs_function_params_common;
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const gs_function_t *const *Functions; /* n */
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} gs_function_AdOt_params_t;
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#define private_st_function_AdOt() /* in gsfunc.c */\
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gs_private_st_suffix_add1(st_function_AdOt, gs_function_AdOt_t,\
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"gs_function_AdOt_t", function_AdOt_enum_ptrs, function_AdOt_reloc_ptrs,\
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st_function, params.Functions)
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/* ---------------- Procedures ---------------- */
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/* Allocate and initialize functions of specific types. */
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int gs_function_ElIn_init(gs_function_t ** ppfn,
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const gs_function_ElIn_params_t * params,
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gs_memory_t * mem);
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int gs_function_1ItSg_init(gs_function_t ** ppfn,
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const gs_function_1ItSg_params_t * params,
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gs_memory_t * mem);
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int gs_function_AdOt_init(gs_function_t ** ppfn,
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const gs_function_AdOt_params_t * params,
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gs_memory_t * mem);
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/* Free parameters of specific types. */
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void gs_function_ElIn_free_params(gs_function_ElIn_params_t * params,
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gs_memory_t * mem);
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void gs_function_1ItSg_free_params(gs_function_1ItSg_params_t * params,
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gs_memory_t * mem);
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void gs_function_AdOt_free_params(gs_function_AdOt_params_t * params,
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gs_memory_t * mem);
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#endif /* gsfunc3_INCLUDED */
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