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/* Copyright (C) 1997, 2000 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: zcsdevn.c,v 1.12 2004/08/04 19:36:13 stefan Exp $ */
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/* DeviceN color space support */
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#include "memory_.h"
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#include "ghost.h"
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#include "oper.h"
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#include "gxcspace.h" /* must precede gscolor2.h */
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#include "gscolor2.h"
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#include "gscdevn.h"
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#include "gxcdevn.h"
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#include "estack.h"
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#include "ialloc.h"
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#include "icremap.h"
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#include "ifunc.h"
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#include "igstate.h"
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#include "iname.h"
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#include "zht2.h"
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/* Imported from gscdevn.c */
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extern const gs_color_space_type gs_color_space_type_DeviceN;
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/* <array> .setdevicenspace - */
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/* The current color space is the alternate space for the DeviceN space. */
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private int
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zsetdevicenspace(i_ctx_t *i_ctx_p)
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{
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os_ptr op = osp;
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const ref *pcsa;
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gs_separation_name *names;
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gs_device_n_map *pmap;
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uint num_components;
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gs_color_space cs;
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const gs_color_space * pacs;
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ref_colorspace cspace_old;
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gs_function_t *pfn;
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int code;
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/* Verify that we have an array as our input parameter */
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check_read_type(*op, t_array);
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if (r_size(op) != 4)
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return_error(e_rangecheck);
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/* pcsa is a pointer to the color names array (element 1 in input array) */
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pcsa = op->value.const_refs + 1;
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if (!r_is_array(pcsa))
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return_error(e_typecheck);
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num_components = r_size(pcsa);
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if (num_components == 0)
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return_error(e_rangecheck);
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if (num_components > GS_CLIENT_COLOR_MAX_COMPONENTS)
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return_error(e_limitcheck);
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/* Check tint transform procedure. Note: Cheap trick to get pointer to it.
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The tint transform procedure is element 3 in the input array */
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check_proc(pcsa[2]);
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/* The alternate color space has been selected as the current color space */
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pacs = gs_currentcolorspace(igs);
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cs = *pacs;
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/* See zcsindex.c for why we use memmove here. */
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memmove(&cs.params.device_n.alt_space, &cs,
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sizeof(cs.params.device_n.alt_space));
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gs_cspace_init(&cs, &gs_color_space_type_DeviceN, imemory, false);
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code = gs_build_DeviceN(&cs, num_components, pacs, imemory);
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if (code < 0)
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return code;
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names = cs.params.device_n.names;
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pmap = cs.params.device_n.map;
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cs.params.device_n.get_colorname_string = gs_get_colorname_string;
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/* Pick up the names of the components */
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{
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uint i;
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ref sname;
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for (i = 0; i < num_components; ++i) {
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array_get(imemory, pcsa, (long)i, &sname);
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switch (r_type(&sname)) {
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case t_string:
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code = name_from_string(imemory, &sname, &sname);
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if (code < 0) {
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ifree_object(names, ".setdevicenspace(names)");
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ifree_object(pmap, ".setdevicenspace(map)");
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return code;
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}
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/* falls through */
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case t_name:
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names[i] = name_index(imemory, &sname);
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break;
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default:
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ifree_object(names, ".setdevicenspace(names)");
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ifree_object(pmap, ".setdevicenspace(map)");
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return_error(e_typecheck);
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}
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}
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}
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/* Now set the current color space as DeviceN */
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cspace_old = istate->colorspace;
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/*
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* pcsa is a pointer to element 1 (2nd element) in the DeviceN
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* description array. Thus pcsa[2] is element #3 (4th element)
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* which is the tint transform.
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*/
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istate->colorspace.procs.special.device_n.layer_names = pcsa[0];
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istate->colorspace.procs.special.device_n.tint_transform = pcsa[2];
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pfn = ref_function(pcsa + 2); /* See comment above */
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if (!pfn)
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code = gs_note_error(e_rangecheck);
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if (code < 0) {
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istate->colorspace = cspace_old;
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ifree_object(names, ".setdevicenspace(names)");
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ifree_object(pmap, ".setdevicenspace(map)");
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return code;
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}
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gs_cspace_set_devn_function(&cs, pfn);
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code = gs_setcolorspace(igs, &cs);
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if (code < 0) {
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istate->colorspace = cspace_old;
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return code;
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}
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rc_decrement(pmap, ".setdevicenspace(map)"); /* build sets rc = 1 */
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pop(1);
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return 0;
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}
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/* ------ Initialization procedure ------ */
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const op_def zcsdevn_op_defs[] =
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{
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op_def_begin_ll3(),
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{"1.setdevicenspace", zsetdevicenspace},
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op_def_end(0)
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};
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