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/*
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* This file is distributed with Ghostscript, but its author,
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* Tanmoy Bhattacharya (tanmoy@qcd.lanl.gov) hereby places it in the
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* public domain.
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*
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* The contents of this file were derived (indeed, largely copied) from
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* the file image.h on SGI's file server; there is no copyright on that file.
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*/
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/* $Id: gdevsgi.h,v 1.3 2002/02/21 22:24:52 giles Exp $*/
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/* SGI raster file definitions */
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#ifndef gdevsgi_INCLUDED
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# define gdevsgi_INCLUDED
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#define IMAGIC 0732
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/* colormap of images */
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#define CM_NORMAL 0
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#define CM_DITHERED 1
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#define CM_SCREEN 2
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#define CM_COLORMAP 3
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#define TYPEMASK 0xff00
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#define BPPMASK 0x00ff
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#define ITYPE_VERBATIM 0x0000
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#define ITYPE_RLE 0x0100
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#define ISRLE(type) (((type) & 0xff00) == ITYPE_RLE)
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#define ISVERBATIM(type) (((type) & 0xff00) == ITYPE_VERBATIM)
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#define BPP(type) ((type) & BPPMASK)
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#define RLE(bpp) (ITYPE_RLE | (bpp))
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#define VERBATIM(bpp) (ITYPE_VERBATIM | (bpp))
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#define IBUFSIZE(pixels) ((pixels+(pixels>>6))<<2)
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#define RLE_NOP 0x00
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#define ierror(p) (((p)->flags&_IOERR)!=0)
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#define ifileno(p) ((p)->file)
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#define getpix(p) (--(p)->cnt>=0 ? *(p)->ptr++ : ifilbuf(p))
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#define putpix(p,x) (--(p)->cnt>=0 \
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? ((int)(*(p)->ptr++=(unsigned)(x))) \
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: iflsbuf(p,(unsigned)(x)))
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typedef struct {
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unsigned short imagic; /* stuff saved on disk . . */
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unsigned short type;
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unsigned short dim;
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unsigned short xsize;
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unsigned short ysize;
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unsigned short zsize;
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unsigned long min_color;
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unsigned long max_color;
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unsigned long wastebytes;
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char name[80];
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unsigned long colormap;
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long file; /* stuff used in core only */
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unsigned short flags;
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short dorev;
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short x;
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short y;
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short z;
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short cnt;
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unsigned short *ptr;
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unsigned short *base;
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unsigned short *tmpbuf;
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unsigned long offset;
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unsigned long rleend; /* for rle images */
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unsigned long *rowstart; /* for rle images */
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long *rowsize; /* for rle images */
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} IMAGE;
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#endif /* gdevsgi_INCLUDED */
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