[thirdparty/cups.git] / filter / image-sgi.h

/*
 * "$Id: image-sgi.h 6649 2007-07-11 21:46:42Z mike $"
 *
 *   SGI image file format library definitions for the Common UNIX Printing
 *   System (CUPS).
 *
 *   Copyright 2007 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: image-sgi.h 6649 2007-07-11 21:46:42Z mike $".
 */
Commit	Line	Data
ef416fc2	1	/*
bc44d920	2	* "$Id: image-sgi.h 6649 2007-07-11 21:46:42Z mike $"
ef416fc2	3	*
	4	* SGI image file format library definitions for the Common UNIX Printing
	5	* System (CUPS).
	6	*
bc44d920	7	* Copyright 2007 by Apple Inc.
ef416fc2	8	* Copyright 1993-2005 by Easy Software Products.
	9	*
	10	* These coded instructions, statements, and computer programs are the
bc44d920	11	* property of Apple Inc. and are protected by Federal copyright
	12	* law. Distribution and use rights are outlined in the file "LICENSE.txt"
	13	* which should have been included with this file. If this file is
	14	* file is missing or damaged, see the license at "http://www.cups.org/".
ef416fc2	15	*
	16	* This file is subject to the Apple OS-Developed Software exception.
	17	*/
	18
	19	#ifndef _SGI_H_
	20	# define _SGI_H_
	21
	22	# include <stdio.h>
	23	# include <stdlib.h>
	24	# include <string.h>
	25
	26	# ifdef __cplusplus
	27	extern "C" {
	28	# endif
	29
	30
	31	/*
	32	* Constants...
	33	*/
	34
	35	# define SGI_MAGIC 474 /* Magic number in image file */
	36
	37	# define SGI_READ 0 /* Read from an SGI image file */
	38	# define SGI_WRITE 1 /* Write to an SGI image file */
	39
	40	# define SGI_COMP_NONE 0 /* No compression */
	41	# define SGI_COMP_RLE 1 /* Run-length encoding */
	42	# define SGI_COMP_ARLE 2 /* Agressive run-length encoding */
	43
	44
	45	/*
	46	* Image structure...
	47	*/
	48
	49	typedef struct
	50	{
	51	FILE file; / Image file */
	52	int mode, /* File open mode */
	53	bpp, /* Bytes per pixel/channel */
	54	comp; /* Compression */
	55	unsigned short xsize, /* Width in pixels */
	56	ysize, /* Height in pixels */
	57	zsize; /* Number of channels */
	58	long firstrow, /* File offset for first row */
	59	nextrow, /* File offset for next row */
	60	*table, / Offset table for compression */
	61	*length; / Length table for compression */
	62	unsigned short arle_row; / Advanced RLE compression buffer */
	63	long arle_offset, /* Advanced RLE buffer offset */
	64	arle_length; /* Advanced RLE buffer length */
	65	} sgi_t;
	66
	67
	68	/*
	69	* Prototypes...
	70	*/
	71
	72	extern int sgiClose(sgi_t *sgip);
	73	extern int sgiGetRow(sgi_t sgip, unsigned short row, int y, int z);
	74	extern sgi_t sgiOpen(const char filename, int mode, int comp, int bpp,
	75	int xsize, int ysize, int zsize);
	76	extern sgi_t sgiOpenFile(FILE file, int mode, int comp, int bpp,
	77	int xsize, int ysize, int zsize);
	78	extern int sgiPutRow(sgi_t sgip, unsigned short row, int y, int z);
79
80	# ifdef __cplusplus
81	}
82	# endif
83	#endif /* !_SGI_H_ */
84
85	/*
bc44d920	86	* End of "$Id: image-sgi.h 6649 2007-07-11 21:46:42Z mike $".
ef416fc2	87	*/