BlockCompressionCodecZlib.h

Go to the documentation of this file.

/* -*- c++ -*-
 * Copyright (C) 2007-2015 Hypertable, Inc.
 *
 * This file is part of Hypertable.
 *
 * Hypertable 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; version 3 of the
 * License, or any later version.
 *
 * Hypertable 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.
 */


#ifndef HYPERTABLE_BLOCKCOMPRESSIONCODECZLIB_H
#define HYPERTABLE_BLOCKCOMPRESSIONCODECZLIB_H

#include <Hypertable/Lib/BlockCompressionCodec.h>

extern "C" {
#include <zlib.h>
}

namespace Hypertable {


  class BlockCompressionCodecZlib : public BlockCompressionCodec {

  public:
    BlockCompressionCodecZlib(const Args &args);
    virtual ~BlockCompressionCodecZlib();

    virtual void set_args(const Args &args);

    virtual void deflate(const DynamicBuffer &input, DynamicBuffer &output,
                         BlockHeader &header, size_t reserve=0);

    virtual void inflate(const DynamicBuffer &input, DynamicBuffer &output,
                         BlockHeader &header);

    virtual int get_type() { return ZLIB; }

  private:

    z_stream m_stream_inflate;

    bool m_inflate_initialized;

    z_stream m_stream_deflate;

    bool m_deflate_initialized;

    int m_level;
  };


}

#endif // HYPERTABLE_BLOCKCOMPRESSIONCODECZLIB_H