proto_compressor.hpp

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/*********************************************************************/
// dar - disk archive - a backup/restoration program
// Copyright (C) 2002-2026 Denis Corbin
//
// 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 2
// of the License, or (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// to contact the author, see the AUTHOR file
/*********************************************************************/

 
#ifndef PROTO_COMPRESSOR_HPP
#define PROTO_COMPRESSOR_HPP
 
#include "../my_config.h"
 
#include "infinint.hpp"
#include "generic_file.hpp"
#include "compression.hpp"
 
namespace libdar
{
 

 
    class proto_compressor : public generic_file
    {
    public :
    using generic_file::generic_file;
 
    proto_compressor(const proto_compressor & ref) = default;
    proto_compressor(proto_compressor && ref) noexcept = default;
    proto_compressor & operator = (const proto_compressor & ref) = default;
    proto_compressor & operator = (proto_compressor && ref) noexcept = default;
        virtual ~proto_compressor() = default;

        virtual compression get_algo() const = 0;

    virtual void suspend_compression() = 0;

    virtual void resume_compression() = 0;

    virtual bool is_compression_suspended() const = 0;
    };
 
 
    // used only for block compression
 
    constexpr const U_I default_uncompressed_block_size = 102400;
    constexpr const U_I min_uncompressed_block_size = 100;

 
} // end of namespace
 
#endif