image_reader.hpp

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//
// (c) Copyright 2011 DESY, Eugen Wintersberger <eugen.wintersberger@desy.de>
//
// This file is part of libpniio.
//
// libpniio 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.
//
// libpniio 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 libpniio.  If not, see <http://www.gnu.org/licenses/>.
// ===========================================================================
//
// Created on: Apr 23, 2012
//     Author: Eugen Wintersberger <eugen.wintersberger@desy.de>
//
//

#pragma once

#include <iostream>
#include <fstream>
#include <string>
#include <vector>

#include <pni/core/types.hpp>
#include "data_reader.hpp"
#include "image_info.hpp"

namespace pni{
namespace io{

    class image_reader:public data_reader
    {
        protected:
            //===================constructors and destructor===================
            image_reader();
            image_reader(const image_reader &) = delete;
            image_reader(image_reader &&r);
            explicit image_reader(const pni::core::string &fname,
                                  bool binary=false);
            
            //==================assignment operators===========================
            image_reader &operator=(const image_reader &r) = delete;

            image_reader &operator=(image_reader &&r);

        public:
            virtual ~image_reader();


            //====================methods======================================
            virtual size_t nimages() const = 0;

            //-----------------------------------------------------------------
            virtual image_info info(size_t i) const = 0;

            //-----------------------------------------------------------------
            template<typename ATYPE> ATYPE image(size_t,size_t) 
            {
                using namespace pni::core;
                throw not_implemented_error(EXCEPTION_RECORD,
                        "Method not implemented!");

                return ATYPE(); //just to make the compiler happy
            }
           
            //-----------------------------------------------------------------
            template<typename ATYPE> 
                void image(ATYPE &,size_t,size_t) 
            {
                using namespace pni::core;
                throw not_implemented_error(EXCEPTION_RECORD,
                        "Method not implemented!");
            }

    };


//end of namepsace
}
}