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- /* Copyright (C) 1997, 1998, 1999 Aladdin Enterprises. All rights reserved.
-
- This file is part of AFPL Ghostscript.
-
- AFPL Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author or
- distributor accepts any responsibility for the consequences of using it, or
- for whether it serves any particular purpose or works at all, unless he or
- she says so in writing. Refer to the Aladdin Free Public License (the
- "License") for full details.
-
- Every copy of AFPL Ghostscript must include a copy of the License, normally
- in a plain ASCII text file named PUBLIC. The License grants you the right
- to copy, modify and redistribute AFPL Ghostscript, but only under certain
- conditions described in the License. Among other things, the License
- requires that the copyright notice and this notice be preserved on all
- copies.
- */
-
- /*$Id: zfunc3.c,v 1.2 2000/09/19 19:00:54 lpd Exp $ */
- /* PostScript language interface to LL3 Functions */
- #include "memory_.h"
- #include "ghost.h"
- #include "oper.h"
- #include "gsfunc3.h"
- #include "gsstruct.h"
- #include "stream.h" /* for files.h */
- #include "files.h"
- #include "ialloc.h"
- #include "idict.h"
- #include "idparam.h"
- #include "ifunc.h"
- #include "store.h"
-
- /* Check prototypes */
- build_function_proc(gs_build_function_2);
- build_function_proc(gs_build_function_3);
-
- /* Finish building a FunctionType 2 (ExponentialInterpolation) function. */
- int
- gs_build_function_2(const ref *op, const gs_function_params_t * mnDR,
- int depth, gs_function_t ** ppfn, gs_memory_t *mem)
- {
- gs_function_ElIn_params_t params;
- int code, n0, n1;
-
- *(gs_function_params_t *)¶ms = *mnDR;
- params.C0 = 0;
- params.C1 = 0;
- if ((code = dict_float_param(op, "N", 0.0, ¶ms.N)) != 0 ||
- (code = n0 = fn_build_float_array(op, "C0", false, false, ¶ms.C0, mem)) < 0 ||
- (code = n1 = fn_build_float_array(op, "C1", false, false, ¶ms.C1, mem)) < 0
- )
- goto fail;
- if (params.C0 == 0)
- n0 = 1; /* C0 defaulted */
- if (params.C1 == 0)
- n1 = 1; /* C1 defaulted */
- if (params.Range == 0)
- params.n = n0; /* either one will do */
- if (n0 != n1 || n0 != params.n)
- goto fail;
- code = gs_function_ElIn_init(ppfn, ¶ms, mem);
- if (code >= 0)
- return 0;
- fail:
- gs_function_ElIn_free_params(¶ms, mem);
- return (code < 0 ? code : gs_note_error(e_rangecheck));
- }
-
- /* Finish building a FunctionType 3 (1-Input Stitching) function. */
- int
- gs_build_function_3(const ref *op, const gs_function_params_t * mnDR,
- int depth, gs_function_t ** ppfn, gs_memory_t *mem)
- {
- gs_function_1ItSg_params_t params;
- int code;
-
- *(gs_function_params_t *) & params = *mnDR;
- params.Functions = 0;
- params.Bounds = 0;
- params.Encode = 0;
- {
- ref *pFunctions;
- gs_function_t **ptr;
- int i;
-
- if ((code = dict_find_string(op, "Functions", &pFunctions)) <= 0)
- return (code < 0 ? code : gs_note_error(e_rangecheck));
- check_array_only(*pFunctions);
- params.k = r_size(pFunctions);
- code = alloc_function_array(params.k, &ptr, mem);
- if (code < 0)
- return code;
- params.Functions = (const gs_function_t * const *)ptr;
- for (i = 0; i < params.k; ++i) {
- ref subfn;
-
- array_get(pFunctions, (long)i, &subfn);
- code = fn_build_sub_function(&subfn, &ptr[i], depth, mem);
- if (code < 0)
- goto fail;
- }
- }
- if ((code = fn_build_float_array(op, "Bounds", true, false, ¶ms.Bounds, mem)) != params.k - 1 ||
- (code = fn_build_float_array(op, "Encode", true, true, ¶ms.Encode, mem)) != 2 * params.k
- )
- goto fail;
- if (params.Range == 0)
- params.n = params.Functions[0]->params.n;
- code = gs_function_1ItSg_init(ppfn, ¶ms, mem);
- if (code >= 0)
- return 0;
- fail:
- gs_function_1ItSg_free_params(¶ms, mem);
- return (code < 0 ? code : gs_note_error(e_rangecheck));
- }
-