LibreOffice Module vcl (master)  1
decode.hxx
Go to the documentation of this file.
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*
3  * This file is part of the LibreOffice project.
4  *
5  * This Source Code Form is subject to the terms of the Mozilla Public
6  * License, v. 2.0. If a copy of the MPL was not distributed with this
7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8  *
9  * This file incorporates work covered by the following license notice:
10  *
11  * Licensed to the Apache Software Foundation (ASF) under one or more
12  * contributor license agreements. See the NOTICE file distributed
13  * with this work for additional information regarding copyright
14  * ownership. The ASF licenses this file to you under the Apache
15  * License, Version 2.0 (the "License"); you may not use this file
16  * except in compliance with the License. You may obtain a copy of
17  * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18  */
19 
20 #ifndef INCLUDED_VCL_SOURCE_FILTER_IGIF_DECODE_HXX
21 #define INCLUDED_VCL_SOURCE_FILTER_IGIF_DECODE_HXX
22 
23 #include <tools/solar.h>
24 #include <vcl/Scanline.hxx>
25 #include <array>
26 #include <memory>
27 
28 struct GIFLZWTableEntry;
29 
31 {
32  std::unique_ptr<GIFLZWTableEntry[]>
34  std::array<sal_uInt8, 4096>
39  bool bEOIFound;
43  sal_uInt16 const nClearCode;
44  sal_uInt16 const nEOICode;
45  sal_uInt16 nTableSize;
46  sal_uInt16 nCodeSize;
47  sal_uInt16 nOldCode;
48  sal_uInt16 nOutBufDataLen;
49  sal_uInt16 nInputBitsBufSize;
50 
51  bool AddToTable(sal_uInt16 nPrevCode, sal_uInt16 nCodeFirstData);
52  bool ProcessOneCode();
53 
54  GIFLZWDecompressor(const GIFLZWDecompressor&) = delete;
56 public:
57 
58  explicit GIFLZWDecompressor( sal_uInt8 cDataSize );
60 
61  Scanline DecompressBlock( sal_uInt8* pSrc, sal_uInt8 cBufSize, sal_uLong& rCount, bool& rEOI );
62 };
63 
64 #endif
65 
66 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
sal_uInt16 const nEOICode
Definition: decode.hxx:44
GIFLZWDecompressor & operator=(const GIFLZWDecompressor &)=delete
bool AddToTable(sal_uInt16 nPrevCode, sal_uInt16 nCodeFirstData)
Definition: decode.cxx:111
sal_uIntPtr sal_uLong
bool ProcessOneCode()
Definition: decode.cxx:130
std::array< sal_uInt8, 4096 > pOutBuf
Definition: decode.hxx:35
sal_uInt8 * pOutBufData
Definition: decode.hxx:36
sal_uInt16 nTableSize
Definition: decode.hxx:45
sal_uLong nInputBitsBuf
Definition: decode.hxx:38
sal_uInt8 nBlockBufPos
Definition: decode.hxx:42
Scanline DecompressBlock(sal_uInt8 *pSrc, sal_uInt8 cBufSize, sal_uLong &rCount, bool &rEOI)
Definition: decode.cxx:63
sal_uInt8 * Scanline
Definition: Scanline.hxx:25
std::unique_ptr< GIFLZWTableEntry[]> pTable
Definition: decode.hxx:33
sal_uInt16 const nClearCode
Definition: decode.hxx:43
unsigned char sal_uInt8
sal_uInt8 * pBlockBuf
Definition: decode.hxx:37
sal_uInt16 nOutBufDataLen
Definition: decode.hxx:48
sal_uInt8 const nDataSize
Definition: decode.hxx:40
sal_uInt16 nOldCode
Definition: decode.hxx:47
GIFLZWDecompressor(const GIFLZWDecompressor &)=delete
sal_uInt8 nBlockBufSize
Definition: decode.hxx:41
sal_uInt16 nCodeSize
Definition: decode.hxx:46
sal_uInt16 nInputBitsBufSize
Definition: decode.hxx:49