JP2Box.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 JP2BOX
#define JP2BOX 1
 
#include <QIODevice>
 
 
/* Data structure used to interpret JP2 and JPX files
    
    According to their specification, JP2 and JPX files are organised in
    'boxes'.  This class can be used to read a box and access its content.
*/
 
class JP2Box
{
 public:
  JP2Box();
 
  JP2Box(QIODevice &device, quint32 TBox=0);
  
  JP2Box subBox(quint32 TBox=0);
 
  void clear();
 
  bool hasError() const {return !error.isEmpty();}
 
  bool isNull() const {return TBox == 0;}
 
  quint32 TBox{};
 
  QByteArray content;
 
  QString error;
  
 private:
  void read(QIODevice &device, quint32 TBox=0);
};
 
#endif