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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: gximage3.h,v 1.8 2002/06/16 08:55:53 lpd Exp $ */
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/* ImageType 3 internal API */
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#ifndef gximage3_INCLUDED
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#  define gximage3_INCLUDED
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#include "gsiparm3.h"
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#include "gxiparam.h"
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/*
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 * The machinery for splitting an ImageType3 image into pixel and mask data
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 * is used both for imaging per se and for writing high-level output.
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 * We implement this by making the procedures for setting up the mask image
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 * and clipping devices virtual.
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 */
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/*
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 * Make the mask image device -- the device that processes mask bits.
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 * The device is closed and freed at the end of processing the image.
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 */
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#define IMAGE3_MAKE_MID_PROC(proc)\
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  int proc(gx_device **pmidev, gx_device *dev, int width, int height,\
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	   gs_memory_t *mem)
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typedef IMAGE3_MAKE_MID_PROC((*image3_make_mid_proc_t));
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/*
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 * Make the mask clip device -- the device that uses the mask image to
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 * clip the (opaque) image data -- and its enumerator.
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 * The device is closed and freed at the end of processing the image.
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 */
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#define IMAGE3_MAKE_MCDE_PROC(proc)\
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  int proc(/* The initial arguments are those of begin_typed_image. */\
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	       gx_device *dev,\
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	   const gs_imager_state *pis,\
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	   const gs_matrix *pmat,\
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	   const gs_image_common_t *pic,\
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	   const gs_int_rect *prect,\
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	   const gx_drawing_color *pdcolor,\
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	   const gx_clip_path *pcpath, gs_memory_t *mem,\
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	   gx_image_enum_common_t **pinfo,\
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	   /* The following arguments are added. */\
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	   gx_device **pmcdev, gx_device *midev,\
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	   gx_image_enum_common_t *pminfo,\
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	   const gs_int_point *origin)
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typedef IMAGE3_MAKE_MCDE_PROC((*image3_make_mcde_proc_t));
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/*
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 * Begin processing an ImageType 3 image, with the mask device creation
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 * procedures as additional parameters.
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 */
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int gx_begin_image3_generic(gx_device * dev,
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			    const gs_imager_state *pis,
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			    const gs_matrix *pmat,
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			    const gs_image_common_t *pic,
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			    const gs_int_rect *prect,
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			    const gx_drawing_color *pdcolor,
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			    const gx_clip_path *pcpath, gs_memory_t *mem,
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			    IMAGE3_MAKE_MID_PROC((*make_mid)),
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			    IMAGE3_MAKE_MCDE_PROC((*make_mcde)),
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			    gx_image_enum_common_t **pinfo);
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#endif /* gximage3_INCLUDED */