/*
    This file is part of SGI Format, a File Format plugin for Adobe Photoshop
    Copyright (C) 2003-9 Toby Thain, toby@telegraphics.com.au

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

enum{
	SGI_HEADER_SIZE = 512,
	SGI_MAGIC = 0x01DA,
	SGI_MAGIC_LITTLEENDIAN = 0xDA01,
	SGI_IMAGENAME_SIZE = 80,
	SGI_VERBATIM = 0, SGI_RLE,
	RLE_COPY_FLAG = 0x80,
	RLE_MAX_RUN = 0x7f,
	SGI_NORMAL = 0, SGI_DITHERED, SGI_SCREEN, SGI_COLORMAP,
};

struct sgi_header {
	unsigned short	magic;		/*  iris image file magic number */
	char	storage;	/*  storage format */
	char	bpc;		/*  number of bytes per pixel channel  */
	unsigned short	dimension;	/*  number of dimensions */
	unsigned short	xsize;		/*  x size in pixels  */
	unsigned short	ysize;		/*  y size in pixels  */
	unsigned short	zsize;		/*  number of channels */
	long	pixmin;		/*  minimum pixel value */
	long	pixmax;		/*  maximum pixel value */
	char	dummy;		/*  ignored */
	char	imagename[SGI_IMAGENAME_SIZE];	/*  image name */
	long	colormap;	/*  colormap id */
};