src/tiff/tif_predict.h

/* $Header$ */

/*
 * Copyright (c) 1995-1997 Sam Leffler
 * Copyright (c) 1995-1997 Silicon Graphics, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and
 * its documentation for any purpose is hereby granted without fee, provided
 * that (i) the above copyright notices and this permission notice appear in
 * all copies of the software and related documentation, and (ii) the names of
 * Sam Leffler and Silicon Graphics may not be used in any advertising or
 * publicity relating to the software without the specific, prior written
 * permission of Sam Leffler and Silicon Graphics.
 *
 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
 *
 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 */

#ifndef _TIFFPREDICT_
#define	_TIFFPREDICT_
/*
 * ``Library-private'' Support for the Predictor Tag
 */

/*
 * Codecs that want to support the Predictor tag must place
 * this structure first in their private state block so that
 * the predictor code can cast tif_data to find its state.
 */
typedef struct {
	int	predictor;		/* predictor tag value */
	int	stride;			/* sample stride over data */
	tsize_t	rowsize;		/* tile/strip row size */

	TIFFPostMethod	pfunc;		/* horizontal differencer/accumulator */
	TIFFCodeMethod	coderow;	/* parent codec encode/decode row */
	TIFFCodeMethod	codestrip;	/* parent codec encode/decode strip */
	TIFFCodeMethod	codetile;	/* parent codec encode/decode tile */
	TIFFVGetMethod	vgetparent;	/* super-class method */
	TIFFVSetMethod	vsetparent;	/* super-class method */
	TIFFPrintMethod	printdir;	/* super-class method */
	TIFFBoolMethod	setupdecode;	/* super-class method */
	TIFFBoolMethod	setupencode;	/* super-class method */
} TIFFPredictorState;

#if defined(__cplusplus)
extern "C" {
#endif
extern	int TIFFPredictorInit(TIFF*);
#if defined(__cplusplus)
}
#endif
#endif /* _TIFFPREDICT_ */
Commit	Line	Data
	1	/* $Header$ */
	2
	3	/*
	4	* Copyright (c) 1995-1997 Sam Leffler
	5	* Copyright (c) 1995-1997 Silicon Graphics, Inc.
	6	*
	7	* Permission to use, copy, modify, distribute, and sell this software and
	8	* its documentation for any purpose is hereby granted without fee, provided
	9	* that (i) the above copyright notices and this permission notice appear in
	10	* all copies of the software and related documentation, and (ii) the names of
	11	* Sam Leffler and Silicon Graphics may not be used in any advertising or
	12	* publicity relating to the software without the specific, prior written
	13	* permission of Sam Leffler and Silicon Graphics.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
	16	* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
	17	* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
	18	*
	19	* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
	20	* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
	21	* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
	22	* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
	23	* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
	24	* OF THIS SOFTWARE.
	25	*/
	26
	27	#ifndef _TIFFPREDICT_
	28	#define _TIFFPREDICT_
	29	/*
	30	* ``Library-private'' Support for the Predictor Tag
	31	*/
	32
	33	/*
	34	* Codecs that want to support the Predictor tag must place
	35	* this structure first in their private state block so that
	36	* the predictor code can cast tif_data to find its state.
	37	*/
	38	typedef struct {
	39	int predictor; /* predictor tag value */
	40	int stride; /* sample stride over data */
	41	tsize_t rowsize; /* tile/strip row size */
	42
	43	TIFFPostMethod pfunc; /* horizontal differencer/accumulator */
	44	TIFFCodeMethod coderow; /* parent codec encode/decode row */
	45	TIFFCodeMethod codestrip; /* parent codec encode/decode strip */
	46	TIFFCodeMethod codetile; /* parent codec encode/decode tile */
	47	TIFFVGetMethod vgetparent; /* super-class method */
	48	TIFFVSetMethod vsetparent; /* super-class method */
	49	TIFFPrintMethod printdir; /* super-class method */
	50	TIFFBoolMethod setupdecode; /* super-class method */
	51	TIFFBoolMethod setupencode; /* super-class method */
	52	} TIFFPredictorState;
	53
	54	#if defined(__cplusplus)
	55	extern "C" {
	56	#endif
	57	extern int TIFFPredictorInit(TIFF*);
	58	#if defined(__cplusplus)
	59	}
	60	#endif
	61	#endif /* _TIFFPREDICT_ */