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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_ */ |