/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 1983, by Sun Microsystems, Inc.
 */

#ifndef _SYS_CMS_H
#define	_SYS_CMS_H

#pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SunOS-4.1.2 10.4 */

#ifdef	__cplusplus
extern "C" {
#endif

/*
 * A colormapseg is a segment of a colormap that was allocated
 * to a user process.  It is used to multiplex a colormap in a
 * shared resource environment, i.e., multi-windows & multi-processes.
 *
 * The cms_addr serves as a base address of a pixel.  Cms_addr is added
 * with pixel values to get the true value of the colormap index.
 * The value of a colormap entry is translated to the video signal that
 * is sent to a monitor for a single pixel.
 *
 * Cms_size and cms_addr can be used by low level routines to provide some
 * protection from using a part of the colormap not allocated to the cms
 * by doing a bounds check on the pixel that is to be written.
 *
 * Cms_map is a structure that has pointers to the bytes of rgb for
 * a corresponding colormapseg.	 The choice of this format enables
 * fast read/write to most colormaps.
 */

#define	CMS_NAMESIZE	20

struct colormapseg {
	int	cms_size;	/* size of this segment of the map */
	int	cms_addr;	/* colormap addr of start of segment */
	char	cms_name[CMS_NAMESIZE]; /* name segment of map (for sharing) */
};

struct	cms_map {
	unsigned char *cm_red, *cm_green, *cm_blue;
};

#ifdef	__cplusplus
}
#endif

#endif	/* _SYS_CMS_H */