src/stream/ZStream_bzip2.h

/*  @(#) $Id: ZStream_bzip2.h,v 1.1 2007/03/29 22:10:28 agreen Exp $ */

/* ------------------------------------------------------------
Copyright (c) 2007 Andrew Green
http://www.zoolib.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
------------------------------------------------------------ */

#ifndef __ZStream_bzip2__
#define __ZStream_bzip2__ 1
#include "zconfig.h"
#include "ZCONFIG_API.h"
#include "ZCONFIG_SPI.h"

#ifndef ZCONFIG_API_Avail__Stream_bzip2
#       define ZCONFIG_API_Avail__Stream_bzip2 ZCONFIG_SPI_Enabled(bzip2)
#endif

#ifndef ZCONFIG_API_Desired__Stream_bzip2
#       define ZCONFIG_API_Desired__Stream_bzip2 1
#endif

#include "ZStreamer.h"

#if ZCONFIG_API_Enabled(Stream_bzip2)

#include <bzlib.h>

// =================================================================================================
#pragma mark -
#pragma mark * ZStreamR_bzip2Decode


class ZStreamR_bzip2Decode : public ZStreamR
        {
public:
        ZStreamR_bzip2Decode(const ZStreamR& iStreamSource);
        ZStreamR_bzip2Decode(size_t iBufferSize, const ZStreamR& iStreamSource);
        ~ZStreamR_bzip2Decode();

// From ZStreamR
        virtual void Imp_Read(void* iDest, size_t iCount, size_t* oCountRead);
        virtual size_t Imp_CountReadable();

protected:
        void Internal_Init(size_t iBufferSize);

        const ZStreamR& fStreamSource;
        bz_stream fState;
        char* fBuffer;
        size_t fBufferSize;
        };

typedef ZStreamerR_FT<ZStreamR_bzip2Decode> ZStreamerR_bzip2Decode;

// =================================================================================================
#pragma mark -
#pragma mark * ZStreamW_bzip2Encode


class ZStreamW_bzip2Encode : public ZStreamW
        {
public:
        ZStreamW_bzip2Encode(int iBlockSize100K, const ZStreamW& iStreamSink);
        ZStreamW_bzip2Encode(int iBlockSize100K, size_t iBufferSize, const ZStreamW& iStreamSink);
        ~ZStreamW_bzip2Encode();

// From ZStreamW
        virtual void Imp_Write(const void* iSource, size_t iCount, size_t* oCountWritten);
        virtual void Imp_Flush();

protected:
        void Internal_Init(int iBlockSize100K, size_t iBufferSize);
        void Internal_Flush();

        const ZStreamW& fStreamSink;
        bz_stream fState;
        char* fBuffer;
        size_t fBufferSize;
        };

// =================================================================================================
#pragma mark -
#pragma mark * ZStreamerW_bzip2Encode


class ZStreamerW_bzip2Encode : public ZStreamerW
        {
public:
        ZStreamerW_bzip2Encode(int iBlockSize100K, ZRef<ZStreamerW> iStreamer);
        ZStreamerW_bzip2Encode(int iBlockSize100K, size_t iBufferSize, ZRef<ZStreamerW> iStreamer);

        virtual ~ZStreamerW_bzip2Encode();

// From ZStreamerW
        virtual const ZStreamW& GetStreamW();

protected:
        ZRef<ZStreamerW> fStreamer;
        ZStreamW_bzip2Encode fStream;
        };

// =================================================================================================
#pragma mark -
#pragma mark * ZStream_bzip2

namespace ZStream_bzip2 {

void sAnalyze(const ZStreamR& iStreamR, vector<pair<uint64, uint32> >& oOffsets);

} // namespace ZStream_bzip2


#endif // ZCONFIG_API_Enabled(Stream_bzip2)

#endif // __ZStream_bzip2__

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