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- /*
- * Copyright (C) 1994, Silicon Graphics, Inc.
- * All Rights Reserved.
- *
- * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
- * the contents of this file may not be disclosed to third parties, copied or
- * duplicated in any form, in whole or in part, without the prior written
- * permission of Silicon Graphics, Inc.
- *
- * RESTRICTED RIGHTS LEGEND:
- * Use, duplication or disclosure by the Government is subject to restrictions
- * as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
- * and Computer Software clause at DFARS 252.227-7013, and/or in similar or
- * successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
- * rights reserved under the Copyright Laws of the United States.
- */
- #ifndef __GL_IMAGE_H__
- #define __GL_IMAGE_H__
- /*
- * Defines for image files . . . .
- *
- * Paul Haeberli - 1984
- * Look in /usr/people/4Dgifts/iristools/imgtools for example code!
- *
- */
-
- #include <stdio.h>
-
- #define IMAGIC 0732
-
- /* colormap of images */
- #define CM_NORMAL 0 /* file contains rows of values which
- * are either RGB values (zsize == 3)
- * or greyramp values (zsize == 1) */
- #define CM_DITHERED 1
- #define CM_SCREEN 2 /* file contains data which is a screen
- * image; getrow returns buffer which
- * can be displayed directly with
- * writepixels */
- #define CM_COLORMAP 3 /* a colormap file */
-
- #define TYPEMASK 0xff00
- #define BPPMASK 0x00ff
- #define ITYPE_VERBATIM 0x0000
- #define ITYPE_RLE 0x0100
- #define ISRLE(type) (((type) & 0xff00) == ITYPE_RLE)
- #define ISVERBATIM(type) (((type) & 0xff00) == ITYPE_VERBATIM)
- #define BPP(type) ((type) & BPPMASK)
- #define RLE(bpp) (ITYPE_RLE | (bpp))
- #define VERBATIM(bpp) (ITYPE_VERBATIM | (bpp))
- #define IBUFSIZE(pixels) ((pixels+(pixels>>6))<<2)
- #define RLE_NOP 0x00
-
- #define ierror(p) (((p)->flags&_IOERR)!=0)
- #define ifileno(p) ((p)->file)
- #define getpix(p) (--(p)->cnt>=0 ? *(p)->ptr++ : ifilbuf(p))
- #define putpix(p,x) (--(p)->cnt>=0 \
- ? ((int)(*(p)->ptr++=(unsigned)(x))) \
- : iflsbuf(p,(unsigned)(x)))
-
- typedef struct {
- unsigned short imagic; /* stuff saved on disk . . */
- unsigned short type;
- unsigned short dim;
- unsigned short xsize;
- unsigned short ysize;
- unsigned short zsize;
- unsigned long min;
- unsigned long max;
- unsigned long wastebytes;
- char name[80];
- unsigned long colormap;
-
- long file; /* stuff used in core only */
- unsigned short flags;
- short dorev;
- short x;
- short y;
- short z;
- short cnt;
- unsigned short *ptr;
- unsigned short *base;
- unsigned short *tmpbuf;
- unsigned long offset;
- unsigned long rleend; /* for rle images */
- unsigned long *rowstart; /* for rle images */
- long *rowsize; /* for rle images */
- } IMAGE;
-
- IMAGE *iopen(char*, char*);
- IMAGE *icreate();
- unsigned short *ibufalloc();
-
- #define IMAGEDEF /* for backwards compatibility */
- #endif /* !__GL_IMAGE_H__ */
-