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Diffstat (limited to 'tools/inc/tools/zcodec.hxx')
| -rw-r--r-- | tools/inc/tools/zcodec.hxx | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/tools/inc/tools/zcodec.hxx b/tools/inc/tools/zcodec.hxx new file mode 100644 index 000000000000..430caa363663 --- /dev/null +++ b/tools/inc/tools/zcodec.hxx @@ -0,0 +1,128 @@ +/************************************************************************* + * + * 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 _ZCODEC_HXX +#define _ZCODEC_HXX + +#include "tools/toolsdllapi.h" +#include <tools/solar.h> + +// ----------- +// - Defines - +// ----------- + +#define DEFAULT_IN_BUFSIZE (0x00008000UL) +#define DEFAULT_OUT_BUFSIZE (0x00008000UL) + +#define MAX_MEM_USAGE 8 + +// +// memory requirement using compress: +// [ INBUFFER ] + [ OUTBUFFER ] + 128KB + 1 << (MEM_USAGE+9) +// +// memory requirement using decompress: +// [ INBUFFER ] + [ OUTBUFFER ] + 32KB +// + +#define ZCODEC_NO_COMPRESSION (0x00000000UL) +#define ZCODEC_BEST_SPEED (0x00000001UL) +#define ZCODEC_DEFAULT_COMPRESSION (0x00000006UL) +#define ZCODEC_BEST_COMPRESSION (0x00000009UL) + +#define ZCODEC_DEFAULT_STRATEGY (0x00000000UL) +#define ZCODEC_ZFILTERED (0x00000100UL) +#define ZCODEC_ZHUFFMAN_ONLY (0x00000200UL) + +#define ZCODEC_UPDATE_CRC (0x00010000UL) +#define ZCODEC_GZ_LIB (0x00020000UL) + +#define ZCODEC_PNG_DEFAULT ( ZCODEC_NO_COMPRESSION | ZCODEC_DEFAULT_STRATEGY | ZCODEC_UPDATE_CRC ) +#define ZCODEC_DEFAULT ( ZCODEC_DEFAULT_COMPRESSION | ZCODEC_DEFAULT_STRATEGY ) + +// ---------- +// - ZCodec - +// ---------- + +class SvStream; + +class TOOLS_DLLPUBLIC ZCodec +{ +private: + + ULONG mbInit; + BOOL mbStatus; + BOOL mbFinish; + ULONG mnMemUsage; + SvStream* mpIStm; + BYTE* mpInBuf; + ULONG mnInBufSize; + ULONG mnInToRead; + SvStream* mpOStm; + BYTE* mpOutBuf; + ULONG mnOutBufSize; + + ULONG mnCRC; + ULONG mnCompressMethod; + void* mpsC_Stream; + + void ImplInitBuf( BOOL nIOFlag ); + void ImplWriteBack( void ); + +public: + ZCodec( ULONG nInBuf, ULONG nOutBuf, ULONG nMemUsage = MAX_MEM_USAGE ); + ZCodec( void ); + virtual ~ZCodec(); + + virtual void BeginCompression( ULONG nCompressMethod = ZCODEC_DEFAULT ); + virtual long EndCompression(); + BOOL IsFinished () const { return mbFinish; } + + long Compress( SvStream& rIStm, SvStream& rOStm ); + long Decompress( SvStream& rIStm, SvStream& rOStm ); + + long Write( SvStream& rOStm, const BYTE* pData, ULONG nSize ); + long Read( SvStream& rIStm, BYTE* pData, ULONG nSize ); + long ReadAsynchron( SvStream& rIStm, BYTE* pData, ULONG nSize ); + + void SetBreak( ULONG ); + ULONG GetBreak( void ); + void SetCRC( ULONG nCurrentCRC ); + ULONG UpdateCRC( ULONG nLatestCRC, ULONG nSource ); + ULONG UpdateCRC( ULONG nLatestCRC, BYTE* pSource, long nDatSize ); + ULONG GetCRC(); +}; + +class GZCodec : public ZCodec +{ + +public: + GZCodec(){}; + ~GZCodec(){}; + virtual void BeginCompression( ULONG nCompressMethod = ZCODEC_DEFAULT ); +}; + +#endif // _ZCODEC_HXX |