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/* Copyright (C) 1997, 1998, 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: gxfunc.h,v 1.10 2005/04/19 14:35:12 igor Exp $ */
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/* Internal definitions for Functions */
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#ifndef gxfunc_INCLUDED
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# define gxfunc_INCLUDED
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#include "gsfunc.h"
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#include "gsstruct.h"
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/* ---------------- Types and structures ---------------- */
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/* Define the generic Function structure type. This is never instantiated. */
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extern_st(st_function);
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#define public_st_function() /* in gsfunc.c */\
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gs_public_st_ptrs2(st_function, gs_function_t, "gs_function_t",\
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function_enum_ptrs, function_reloc_ptrs, params.Domain, params.Range)
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/* ---------------- Internal procedures ---------------- */
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/* Generic free_params implementation. */
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void fn_common_free_params(gs_function_params_t * params, gs_memory_t * mem);
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/* Generic free implementation. */
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void fn_common_free(gs_function_t * pfn, bool free_params, gs_memory_t * mem);
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/* Check the values of m, n, Domain, and (if supplied) Range. */
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int fn_check_mnDR(const gs_function_params_t * params, int m, int n);
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/* Generic get_info implementation (no Functions or DataSource). */
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FN_GET_INFO_PROC(gs_function_get_info_default);
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/*
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* Write generic parameters (FunctionType, Domain, Range) on a parameter list.
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*/
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int fn_common_get_params(const gs_function_t *pfn, gs_param_list *plist);
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/*
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* Copy an array of numeric values when scaling a function.
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*/
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void *fn_copy_values(const void *pvalues, int count, int size,
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gs_memory_t *mem);
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/*
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* If necessary, scale the Range or Decode array for fn_make_scaled.
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* Note that we must always allocate a new array.
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*/
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int fn_scale_pairs(const float **ppvalues, const float *pvalues, int npairs,
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const gs_range_t *pranges, gs_memory_t *mem);
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/*
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* Scale the generic part of a function (Domain and Range).
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* The client must have copied the parameters already.
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*/
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int fn_common_scale(gs_function_t *psfn, const gs_function_t *pfn,
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const gs_range_t *pranges, gs_memory_t *mem);
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/* Serialize. */
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int fn_common_serialize(const gs_function_t * pfn, stream *s);
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#endif /* gxfunc_INCLUDED */
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