Compressor.h

Go to the documentation of this file.

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * Written (W) 2009 Soeren Sonnenburg
 * Copyright (C) 2009 Berlin Institute of Technology
 */
#ifndef __COMPRESSOR_H__
#define __COMPRESSOR_H__

#include <shogun/lib/config.h>
#include <shogun/lib/common.h>
#include <shogun/base/SGObject.h>
#include <shogun/io/SGIO.h>

#ifdef USE_LZO
#include <lzo/lzoconf.h>
#include <lzo/lzo1x.h>
#endif

namespace shogun
{
    enum E_COMPRESSION_TYPE
    {
        UNCOMPRESSED,
        LZO,
        GZIP,
        BZIP2,
        LZMA,
        SNAPPY
    };


    class CCompressor : public CSGObject
    {
    public:
        CCompressor();

        CCompressor(E_COMPRESSION_TYPE ct) : CSGObject(), compression_type(ct)
        {
        }

        virtual ~CCompressor()
        {
        }

        void compress(uint8_t* uncompressed, uint64_t uncompressed_size,
                uint8_t* &compressed, uint64_t &compressed_size, int32_t level=1);

        void decompress(uint8_t* compressed, uint64_t compressed_size,
                uint8_t* uncompressed, uint64_t& uncompressed_size);

        inline virtual const char* get_name() const { return "Compressor"; }

    protected:
        E_COMPRESSION_TYPE compression_type;
    };
}
#endif //__COMPRESSOR_H__