blob: 164812878865327474892036de61f324873776a7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _LZWDECOM_HXX
#define _LZWDECOM_HXX
#include <tools/stream.hxx>
struct LZWTableEntry {
USHORT nPrevCode;
USHORT nDataCount;
BYTE nData;
};
class LZWDecompressor {
public:
LZWDecompressor();
~LZWDecompressor();
void StartDecompression(SvStream & rIStream);
ULONG Decompress(BYTE * pTarget, ULONG nMaxCount);
// Liefert die Anzahl der geschriebenen Bytes, wenn < nMaxCount,
// sind keine weiteren Daten zu entpacken, oder es ist ein
// Fehler aufgetreten.
private:
USHORT GetNextCode();
void AddToTable(USHORT nPrevCode, USHORT nCodeFirstData);
void DecompressSome();
SvStream * pIStream;
LZWTableEntry * pTable;
USHORT nTableSize;
BOOL bEOIFound, bInvert, bFirst;
USHORT nOldCode;
BYTE * pOutBuf;
BYTE * pOutBufData;
USHORT nOutBufDataLen;
BYTE nInputBitsBuf;
USHORT nInputBitsBufSize;
};
#endif
|
