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/**************************************************************************
*
* $Revision: 1.4 $
* $Date: 1997/11/26 00:30:50 $
* $Source: /disk6/Master/cvsmdev2/PR/include/PRimage.h,v $
*
**************************************************************************/
#ifndef __GL_IMAGE_H__
#define __GL_IMAGE_H__
#ifdef __cplusplus
extern "C" {
#endif
/*
* 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 *icreate();
/*
* IMAGE *iopen(char *file, char *mode, unsigned int type, unsigned int dim,
* unsigned int xsize, unsigned int ysize, unsigned int zsize);
* IMAGE *fiopen(int f, char *mode, unsigned int type, unsigned int dim,
* unsigned int xsize, unsigned int ysize, unsigned int zsize);
*
* ...while iopen and fiopen can take an extended set of parameters, the
* last five are optional, so a more correct prototype would be:
*
*/
IMAGE *iopen(char *file, char *mode, ...);
IMAGE *fiopen(int f, char *mode, ...);
/*
*
* unsigned short *ibufalloc(IMAGE *image);
* int ifilbuf(IMAGE *image);
* int iflush(IMAGE *image);
* unsigned int iflsbuf(IMAGE *image, unsigned int c);
* void isetname(IMAGE *image, char *name);
* void isetcolormap(IMAGE *image, int colormap);
*/
int iclose(IMAGE *image);
int putrow(IMAGE *image, unsigned short *buffer, unsigned int y, unsigned int z);
int getrow(IMAGE *image, unsigned short *buffer, unsigned int y, unsigned int z);
/*
IMAGE *iopen();
IMAGE *icreate();
*/
unsigned short *ibufalloc();
#define IMAGEDEF /* for backwards compatibility */
#ifdef __cplusplus
}
#endif
#endif /* !__GL_IMAGE_H__ */
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