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tif_predict.h
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1 /* $Header: /cvsroot/osrs/libtiff/libtiff/tif_predict.h,v 1.1.1.1 1999/07/27 21:50:27 mike Exp $ */
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 */
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_ */
int TIFFPredictorInit(TIFF *)
Definition: tif_predict.c:437
int32 tsize_t
Definition: tiffio.h:73
int(* TIFFVSetMethod)(TIFF *, ttag_t, va_list)
Definition: tiffiop.h:64
void(* TIFFPrintMethod)(TIFF *, FILE *, long)
Definition: tiffiop.h:66
void(* TIFFPostMethod)(TIFF *, tidata_t, tsize_t)
Definition: tiffiop.h:63
int(* TIFFBoolMethod)(TIFF *)
Definition: tiffiop.h:59
int(* TIFFVGetMethod)(TIFF *, ttag_t, va_list)
Definition: tiffiop.h:65
int(* TIFFCodeMethod)(TIFF *, tidata_t, tsize_t, tsample_t)
Definition: tiffiop.h:61
TIFFCodeMethod codetile
Definition: tif_predict.h:46
TIFFVSetMethod vsetparent
Definition: tif_predict.h:48
TIFFCodeMethod coderow
Definition: tif_predict.h:44
TIFFVGetMethod vgetparent
Definition: tif_predict.h:47
TIFFCodeMethod codestrip
Definition: tif_predict.h:45
TIFFPrintMethod printdir
Definition: tif_predict.h:49
TIFFBoolMethod setupdecode
Definition: tif_predict.h:50
TIFFBoolMethod setupencode
Definition: tif_predict.h:51
TIFFPostMethod pfunc
Definition: tif_predict.h:43
Definition: tiffiop.h:70