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/*
* "$Id$"
*
* SGI image file format library definitions for CUPS.
*
* Copyright 2007-2011 by Apple Inc.
* Copyright 1993-2005 by Easy Software Products.
*
* These coded instructions, statements, and computer programs are the
* property of Apple Inc. and are protected by Federal copyright
* law. Distribution and use rights are outlined in the file "LICENSE.txt"
* which should have been included with this file. If this file is
* file is missing or damaged, see the license at "http://www.cups.org/".
*
* This file is subject to the Apple OS-Developed Software exception.
*/
#ifndef _SGI_H_
# define _SGI_H_
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# ifdef __cplusplus
extern "C" {
# endif
/*
* Constants...
*/
# define SGI_MAGIC 474 /* Magic number in image file */
# define SGI_READ 0 /* Read from an SGI image file */
# define SGI_WRITE 1 /* Write to an SGI image file */
# define SGI_COMP_NONE 0 /* No compression */
# define SGI_COMP_RLE 1 /* Run-length encoding */
# define SGI_COMP_ARLE 2 /* Agressive run-length encoding */
/*
* Image structure...
*/
typedef struct
{
FILE *file; /* Image file */
int mode, /* File open mode */
bpp, /* Bytes per pixel/channel */
comp; /* Compression */
unsigned short xsize, /* Width in pixels */
ysize, /* Height in pixels */
zsize; /* Number of channels */
long firstrow, /* File offset for first row */
nextrow, /* File offset for next row */
**table, /* Offset table for compression */
**length; /* Length table for compression */
unsigned short *arle_row; /* Advanced RLE compression buffer */
long arle_offset, /* Advanced RLE buffer offset */
arle_length; /* Advanced RLE buffer length */
} sgi_t;
/*
* Prototypes...
*/
extern int sgiClose(sgi_t *sgip);
extern int sgiGetRow(sgi_t *sgip, unsigned short *row, int y, int z);
extern sgi_t *sgiOpen(const char *filename, int mode, int comp, int bpp,
int xsize, int ysize, int zsize);
extern sgi_t *sgiOpenFile(FILE *file, int mode, int comp, int bpp,
int xsize, int ysize, int zsize);
extern int sgiPutRow(sgi_t *sgip, unsigned short *row, int y, int z);
# ifdef __cplusplus
}
# endif
#endif /* !_SGI_H_ */
/*
* End of "$Id$".
*/
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