compression.h

/*
 * Copyright © 2017 Stefan Kebekus <stefan.kebekus@math.uni-freiburg.de>
 *
 * 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.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */
 
 
#ifndef COMPRESSION
#define COMPRESSION 1
 
#include <QByteArray>
#include <QImage>
 

 
namespace compression
{
  
  enum zlibCompressionStrategy {
    standard,

    filtered
  };

  QImage faxG4Decode(const QByteArray &data, int width, int heightEstimate=0);

  QByteArray faxG4Encode(const QImage &image);

  QByteArray zlibCompress(QByteArray &src, zlibCompressionStrategy strategy=standard);

  QByteArray zlibUncompress(const QByteArray &src, quint64 estimatedOutputSize=0);

  QByteArray zopfliCompress(const QByteArray &src);
};
 
#endif