1/* $Id: tif_predict.h 276 2010-06-30 12:18:30Z nijtmans $ */
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 */
38typedef struct {
39	int		predictor;	/* predictor tag value */
40	int		stride;		/* sample stride over data */
41	tsize_t		rowsize;	/* tile/strip row size */
42
43 	TIFFCodeMethod  encoderow;	/* parent codec encode/decode row */
44 	TIFFCodeMethod  encodestrip;	/* parent codec encode/decode strip */
45 	TIFFCodeMethod  encodetile;	/* parent codec encode/decode tile */
46 	TIFFPostMethod  encodepfunc;	/* horizontal differencer */
47
48 	TIFFCodeMethod  decoderow;	/* parent codec encode/decode row */
49 	TIFFCodeMethod  decodestrip;	/* parent codec encode/decode strip */
50 	TIFFCodeMethod  decodetile;	/* parent codec encode/decode tile */
51 	TIFFPostMethod  decodepfunc;	/* horizontal accumulator */
52
53	TIFFVGetMethod	vgetparent;	/* super-class method */
54	TIFFVSetMethod	vsetparent;	/* super-class method */
55	TIFFPrintMethod	printdir;	/* super-class method */
56	TIFFBoolMethod	setupdecode;	/* super-class method */
57	TIFFBoolMethod	setupencode;	/* super-class method */
58} TIFFPredictorState;
59
60#if defined(__cplusplus)
61extern "C" {
62#endif
63extern	int TIFFPredictorInit(TIFF*);
64extern	int TIFFPredictorCleanup(TIFF*);
65#if defined(__cplusplus)
66}
67#endif
68#endif /* _TIFFPREDICT_ */
69
70/* vim: set ts=8 sts=8 sw=8 noet: */
71/*
72 * Local Variables:
73 * mode: c
74 * c-basic-offset: 8
75 * fill-column: 78
76 * End:
77 */
78