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127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/**************************************************************************
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*
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* $Revision: 1.4 $
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* $Date: 1997/11/26 00:30:50 $
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* $Source: /hosts/gate3/exdisk2/cvs/N64OS/Master/cvsmdev2/PR/include/PRimage.h,v $
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*
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**************************************************************************/
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#ifndef __GL_IMAGE_H__
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#define __GL_IMAGE_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Defines for image files . . . .
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*
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* Paul Haeberli - 1984
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* Look in /usr/people/4Dgifts/iristools/imgtools for example code!
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*
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*/
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#include <stdio.h>
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#define IMAGIC 0732
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/* colormap of images */
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#define CM_NORMAL 0 /* file contains rows of values which
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* are either RGB values (zsize == 3)
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* or greyramp values (zsize == 1) */
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#define CM_DITHERED 1
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#define CM_SCREEN 2 /* file contains data which is a screen
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* image; getrow returns buffer which
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* can be displayed directly with
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* writepixels */
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#define CM_COLORMAP 3 /* a colormap file */
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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;
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unsigned long max;
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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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IMAGE *icreate();
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/*
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* IMAGE *iopen(char *file, char *mode, unsigned int type, unsigned int dim,
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* unsigned int xsize, unsigned int ysize, unsigned int zsize);
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* IMAGE *fiopen(int f, char *mode, unsigned int type, unsigned int dim,
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* unsigned int xsize, unsigned int ysize, unsigned int zsize);
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*
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* ...while iopen and fiopen can take an extended set of parameters, the
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* last five are optional, so a more correct prototype would be:
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*
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*/
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IMAGE *iopen(char *file, char *mode, ...);
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IMAGE *fiopen(int f, char *mode, ...);
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/*
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*
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* unsigned short *ibufalloc(IMAGE *image);
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* int ifilbuf(IMAGE *image);
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* int iflush(IMAGE *image);
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* unsigned int iflsbuf(IMAGE *image, unsigned int c);
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* void isetname(IMAGE *image, char *name);
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* void isetcolormap(IMAGE *image, int colormap);
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*/
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int iclose(IMAGE *image);
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int putrow(IMAGE *image, unsigned short *buffer, unsigned int y, unsigned int z);
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int getrow(IMAGE *image, unsigned short *buffer, unsigned int y, unsigned int z);
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/*
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IMAGE *iopen();
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IMAGE *icreate();
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*/
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unsigned short *ibufalloc();
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#define IMAGEDEF /* for backwards compatibility */
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#ifdef __cplusplus
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}
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#endif
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#endif /* !__GL_IMAGE_H__ */
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