1 /* Copyright (C) 2001-2012 Artifex Software, Inc. 2 All Rights Reserved. 3 4 This software is provided AS-IS with no warranty, either express or 5 implied. 6 7 This software is distributed under license and may not be copied, 8 modified or distributed except as expressly authorized under the terms 9 of the license contained in the file LICENSE in this distribution. 10 11 Refer to licensing information at http://www.artifex.com or contact 12 Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134, San Rafael, 13 CA 94903, U.S.A., +1(415)492-9861, for further information. 14 */ 15 16 17 /* Internal definitions for Functions */ 18 19 #ifndef gxfunc_INCLUDED 20 # define gxfunc_INCLUDED 21 22 #include "gsfunc.h" 23 #include "gsstruct.h" 24 25 /* ---------------- Types and structures ---------------- */ 26 27 /* Define the generic Function structure type. This is never instantiated. */ 28 extern_st(st_function); 29 #define public_st_function() /* in gsfunc.c */\ 30 gs_public_st_ptrs2(st_function, gs_function_t, "gs_function_t",\ 31 function_enum_ptrs, function_reloc_ptrs, params.Domain, params.Range) 32 33 /* ---------------- Internal procedures ---------------- */ 34 35 /* Generic free_params implementation. */ 36 void fn_common_free_params(gs_function_params_t * params, gs_memory_t * mem); 37 38 /* Generic free implementation. */ 39 void fn_common_free(gs_function_t * pfn, bool free_params, gs_memory_t * mem); 40 41 /* Check the values of m, n, Domain, and (if supplied) Range. */ 42 int fn_check_mnDR(const gs_function_params_t * params, int m, int n); 43 44 /* Generic get_info implementation (no Functions or DataSource). */ 45 FN_GET_INFO_PROC(gs_function_get_info_default); 46 47 /* 48 * Write generic parameters (FunctionType, Domain, Range) on a parameter list. 49 */ 50 int fn_common_get_params(const gs_function_t *pfn, gs_param_list *plist); 51 52 /* 53 * Copy an array of numeric values when scaling a function. 54 */ 55 void *fn_copy_values(const void *pvalues, int count, int size, 56 gs_memory_t *mem); 57 58 /* 59 * If necessary, scale the Range or Decode array for fn_make_scaled. 60 * Note that we must always allocate a new array. 61 */ 62 int fn_scale_pairs(const float **ppvalues, const float *pvalues, int npairs, 63 const gs_range_t *pranges, gs_memory_t *mem); 64 65 /* 66 * Scale the generic part of a function (Domain and Range). 67 * The client must have copied the parameters already. 68 */ 69 int fn_common_scale(gs_function_t *psfn, const gs_function_t *pfn, 70 const gs_range_t *pranges, gs_memory_t *mem); 71 72 /* Serialize. */ 73 int fn_common_serialize(const gs_function_t * pfn, stream *s); 74 75 #endif /* gxfunc_INCLUDED */ 76