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

/*
 * "$Id: image-sgi.h,v 1.4 2000/01/04 13:45:45 mike Exp $"
 *
 *   SGI image file format library definitions for the Common UNIX Printing
 *   System (CUPS).
 *
 *   Copyright 1993-2000 by Easy Software Products.
 *
 *   These coded instructions, statements, and computer programs are the
 *   property of Easy Software Products 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 missing or damaged please contact Easy Software Products
 *   at:
 *
 *       Attn: CUPS Licensing Information
 *       Easy Software Products
 *       44141 Airport View Drive, Suite 204
 *       Hollywood, Maryland 20636-3111 USA
 *
 *       Voice: (301) 373-9603
 *       EMail: cups-info@cups.org
 *         WWW: http://www.cups.org
 */

#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(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,v 1.4 2000/01/04 13:45:45 mike Exp $".
 */
Commit	Line	Data
1012c8a8	1	/*
71fe22b7	2	* "$Id: image-sgi.h,v 1.4 2000/01/04 13:45:45 mike Exp $"
1012c8a8	3	*
ed19bd98	4	* SGI image file format library definitions for the Common UNIX Printing
ed19bd98	5	* System (CUPS).
1012c8a8	6	*
71fe22b7	7	* Copyright 1993-2000 by Easy Software Products.
1012c8a8	8	*
ed19bd98	9	* These coded instructions, statements, and computer programs are the
	10	* property of Easy Software Products and are protected by Federal
	11	* copyright law. Distribution and use rights are outlined in the file
	12	* "LICENSE.txt" which should have been included with this file. If this
	13	* file is missing or damaged please contact Easy Software Products
	14	* at:
1012c8a8	15	*
ed19bd98	16	* Attn: CUPS Licensing Information
	17	* Easy Software Products
	18	* 44141 Airport View Drive, Suite 204
	19	* Hollywood, Maryland 20636-3111 USA
1012c8a8	20	*
ed19bd98	21	* Voice: (301) 373-9603
	22	* EMail: cups-info@cups.org
	23	* WWW: http://www.cups.org
1012c8a8	24	*/
	25
	26	#ifndef _SGI_H_
	27	# define _SGI_H_
	28
	29	# include <stdio.h>
	30	# include <stdlib.h>
	31	# include <string.h>
	32
	33	# ifdef __cplusplus
	34	extern "C" {
	35	# endif
	36
	37
	38	/*
	39	* Constants...
	40	*/
	41
	42	# define SGI_MAGIC 474 /* Magic number in image file */
	43
	44	# define SGI_READ 0 /* Read from an SGI image file */
	45	# define SGI_WRITE 1 /* Write to an SGI image file */
	46
	47	# define SGI_COMP_NONE 0 /* No compression */
	48	# define SGI_COMP_RLE 1 /* Run-length encoding */
	49	# define SGI_COMP_ARLE 2 /* Agressive run-length encoding */
	50
	51
	52	/*
	53	* Image structure...
	54	*/
	55
	56	typedef struct
	57	{
	58	FILE file; / Image file */
	59	int mode, /* File open mode */
	60	bpp, /* Bytes per pixel/channel */
	61	comp; /* Compression */
	62	unsigned short xsize, /* Width in pixels */
	63	ysize, /* Height in pixels */
	64	zsize; /* Number of channels */
	65	long firstrow, /* File offset for first row */
	66	nextrow, /* File offset for next row */
	67	*table, / Offset table for compression */
	68	*length; / Length table for compression */
6de9968b	69	unsigned short arle_row; / Advanced RLE compression buffer */
1012c8a8	70	long arle_offset, /* Advanced RLE buffer offset */
	71	arle_length; /* Advanced RLE buffer length */
	72	} sgi_t;
	73
	74
	75	/*
	76	* Prototypes...
	77	*/
	78
	79	extern int sgiClose(sgi_t *sgip);
6de9968b	80	extern int sgiGetRow(sgi_t sgip, unsigned short row, int y, int z);
1012c8a8	81	extern sgi_t sgiOpen(char filename, int mode, int comp, int bpp,
	82	int xsize, int ysize, int zsize);
	83	extern sgi_t sgiOpenFile(FILE file, int mode, int comp, int bpp,
	84	int xsize, int ysize, int zsize);
6de9968b	85	extern int sgiPutRow(sgi_t sgip, unsigned short row, int y, int z);
1012c8a8	86
	87	# ifdef __cplusplus
	88	}
	89	# endif
	90	#endif /* !_SGI_H_ */
	91
	92	/*
71fe22b7	93	* End of "$Id: image-sgi.h,v 1.4 2000/01/04 13:45:45 mike Exp $".
1012c8a8	94	*/