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/* Copyright (C) 1999 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: gdevmpla.h,v 1.5 2002/06/16 07:25:26 lpd Exp $ */
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/* Interface to planar memory devices. */
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#ifndef gdevmpla_INCLUDED
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# define gdevmpla_INCLUDED
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/*
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* Planar memory devices store the bits by planes instead of by chunks.
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* The plane corresponding to the least significant bits of the color index
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* is stored first. Each plane may store a different number of bits,
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* but the depth of each plane must be an allowable one for a memory
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* device and not greater than 16 (currently, 1, 2, 4, 8, or 16), and the
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* total must not exceed the size of gx_color_index.
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*
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* Planar devices store the data for each plane contiguously, as though
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* each plane were a separate device. There is an array of line pointers
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* for each plane (num_planes arrays in all).
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*/
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/*
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* Set up a planar memory device, after calling gs_make_mem_device but
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* before opening the device. The pre-existing device provides the color
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* mapping procedures, but not the drawing procedures. Requires: num_planes
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* > 0, plane_depths[0 .. num_planes - 1] > 0, sum of plane_depths <=
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* mdev->color_info.depth.
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*/
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int gdev_mem_set_planar(gx_device_memory * mdev, int num_planes,
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const gx_render_plane_t *planes /*[num_planes]*/);
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#endif /* gdevmpla_INCLUDED */
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