[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 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: 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	*
321d8d57	4	* SGI image file format library definitions for CUPS.
ef416fc2	5	*
321d8d57	6	* Copyright 2007-2011 by Apple Inc.
ef416fc2	7	* Copyright 1993-2005 by Easy Software Products.
	8	*
	9	* These coded instructions, statements, and computer programs are the
bc44d920	10	* property of Apple Inc. and are protected by Federal copyright
	11	* law. Distribution and use rights are outlined in the file "LICENSE.txt"
	12	* which should have been included with this file. If this file is
	13	* file is missing or damaged, see the license at "http://www.cups.org/".
ef416fc2	14	*
	15	* This file is subject to the Apple OS-Developed Software exception.
	16	*/
	17
	18	#ifndef _SGI_H_
	19	# define _SGI_H_
	20
	21	# include <stdio.h>
	22	# include <stdlib.h>
	23	# include <string.h>
	24
	25	# ifdef __cplusplus
	26	extern "C" {
	27	# endif
	28
	29
	30	/*
	31	* Constants...
	32	*/
	33
	34	# define SGI_MAGIC 474 /* Magic number in image file */
	35
	36	# define SGI_READ 0 /* Read from an SGI image file */
	37	# define SGI_WRITE 1 /* Write to an SGI image file */
	38
	39	# define SGI_COMP_NONE 0 /* No compression */
	40	# define SGI_COMP_RLE 1 /* Run-length encoding */
	41	# define SGI_COMP_ARLE 2 /* Agressive run-length encoding */
	42
	43
	44	/*
	45	* Image structure...
	46	*/
	47
	48	typedef struct
	49	{
	50	FILE file; / Image file */
	51	int mode, /* File open mode */
	52	bpp, /* Bytes per pixel/channel */
	53	comp; /* Compression */
	54	unsigned short xsize, /* Width in pixels */
	55	ysize, /* Height in pixels */
	56	zsize; /* Number of channels */
	57	long firstrow, /* File offset for first row */
	58	nextrow, /* File offset for next row */
	59	*table, / Offset table for compression */
	60	*length; / Length table for compression */
	61	unsigned short arle_row; / Advanced RLE compression buffer */
	62	long arle_offset, /* Advanced RLE buffer offset */
	63	arle_length; /* Advanced RLE buffer length */
	64	} sgi_t;
	65
	66
	67	/*
	68	* Prototypes...
	69	*/
	70
	71	extern int sgiClose(sgi_t *sgip);
	72	extern int sgiGetRow(sgi_t sgip, unsigned short row, int y, int z);
	73	extern sgi_t sgiOpen(const char filename, int mode, int comp, int bpp,
	74	int xsize, int ysize, int zsize);
	75	extern sgi_t sgiOpenFile(FILE file, int mode, int comp, int bpp,
	76	int xsize, int ysize, int zsize);
	77	extern int sgiPutRow(sgi_t sgip, unsigned short row, int y, int z);
78
79	# ifdef __cplusplus
80	}
81	# endif
82	#endif /* !_SGI_H_ */
83
84	/*
bc44d920	85	* End of "$Id: image-sgi.h 6649 2007-07-11 21:46:42Z mike $".
ef416fc2	86	*/