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/* Copyright (C) 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: gsipar3x.h,v 1.7 2002/06/16 08:45:42 lpd Exp $ */
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/* Extended ImageType 3 ("3x") image parameter definition */
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#ifndef gsipar3x_INCLUDED
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# define gsipar3x_INCLUDED
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#include "gsiparam.h"
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#include "gsiparm3.h" /* for interleave types */
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/*
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* An ImageType 3x image is the transparency-capable extension of an
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* ImageType 3 image. Instead of a MaskDict, it has an OpacityMaskDict
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* and/or a ShapeMaskDict, whose depths may be greater than 1. It also
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* has an optional Matte member, defining a pre-mixed background color.
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*
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* Since ImageTypes must be numeric, we assign the number 103 for this
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* type of image; however, this is defined in only one place, namely here.
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*/
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#define IMAGE3X_IMAGETYPE 103
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/*
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* If InterleaveType is 3, the data source(s) for the mask(s) *precede* the
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* data sources for the pixel data, with opacity preceding shape. For
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* InterleaveType 3, the client is responsible for always providing mask
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* data before the pixel data that it masks. (The implementation does not
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* currently check this, but it should.) For this type of image,
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* InterleaveType 2 (interleaved scan lines) is not allowed.
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*/
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typedef struct gs_image3x_mask_s {
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int InterleaveType;
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float Matte[GS_CLIENT_COLOR_MAX_COMPONENTS];
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bool has_Matte;
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/*
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* Note that the ColorSpaces in the MaskDicts are ignored.
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* Note also that MaskDict.BitsPerComponent may be zero, which
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* indicates that the given mask is not supplied.
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*/
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gs_data_image_t MaskDict;
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} gs_image3x_mask_t;
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typedef struct gs_image3x_s {
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gs_pixel_image_common; /* DataDict */
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gs_image3x_mask_t Opacity, Shape; /* ...MaskDict */
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} gs_image3x_t;
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/* As noted above, the ColorSpaces in the MaskDicts are ignored. */
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#define private_st_gs_image3x() /* in gximag3x.c */\
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gs_private_st_suffix_add0(st_gs_image3x, gs_image3x_t, "gs_image3x_t",\
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image3x_enum_ptrs, image3x_reloc_ptrs, st_gs_pixel_image)
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/*
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* Initialize an ImageType 3x image.
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*/
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void gs_image3x_t_init(gs_image3x_t *pim, const gs_color_space *color_space);
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#endif /* gsipar3x_INCLUDED */
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