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Diffstat (limited to 'vcl/source/filter/igif/decode.hxx')
-rw-r--r-- | vcl/source/filter/igif/decode.hxx | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/vcl/source/filter/igif/decode.hxx b/vcl/source/filter/igif/decode.hxx new file mode 100644 index 000000000000..44523e44812a --- /dev/null +++ b/vcl/source/filter/igif/decode.hxx @@ -0,0 +1,60 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#ifndef _DECODE_HXX +#define _DECODE_HXX + +#include <vcl/bmpacc.hxx> + +struct GIFLZWTableEntry; + +class GIFLZWDecompressor +{ + GIFLZWTableEntry* pTable; + HPBYTE pOutBuf; + HPBYTE pOutBufData; + HPBYTE pBlockBuf; + sal_uLong nInputBitsBuf; + sal_uInt16 nTableSize; + sal_uInt16 nClearCode; + sal_uInt16 nEOICode; + sal_uInt16 nCodeSize; + sal_uInt16 nOldCode; + sal_uInt16 nOutBufDataLen; + sal_uInt16 nInputBitsBufSize; + sal_Bool bEOIFound; + sal_uInt8 nDataSize; + sal_uInt8 nBlockBufSize; + sal_uInt8 nBlockBufPos; + + void AddToTable(sal_uInt16 nPrevCode, sal_uInt16 nCodeFirstData); + sal_Bool ProcessOneCode(); + + +public: + + GIFLZWDecompressor( sal_uInt8 cDataSize ); + ~GIFLZWDecompressor(); + + HPBYTE DecompressBlock( HPBYTE pSrc, sal_uInt8 cBufSize, sal_uLong& rCount, sal_Bool& rEOI ); +}; + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |