1 /* Id */
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 extern  int TIFFPredictorCleanup(TIFF*);
59 #if defined(__cplusplus)
60 }
61 #endif
62 #endif /* _TIFFPREDICT_ */
63 
64 /* vim: set ts=8 sts=8 sw=8 noet: */
65