CListModeDataECAT.h

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/*
    Copyright (C) 2003- 2011, Hammersmith Imanet Ltd
    Copyright (C) 2014, University College London
    This file is part of STIR.

    SPDX-License-Identifier: Apache-2.0

    See STIR/LICENSE.txt for details
*/
#ifndef __stir_listmode_CListModeDataECAT_H__
#define __stir_listmode_CListModeDataECAT_H__

#include "stir/listmode/CListModeData.h"
#include "stir/IO/InputStreamWithRecords.h"
#ifdef HAVE_LLN_MATRIX
#  include "stir/IO/stir_ecat7.h"
#else
#  include "stir/IO/stir_ecat_common.h" // for namespace macros
#endif
#include <iostream>
#include <vector>

START_NAMESPACE_STIR
START_NAMESPACE_ECAT
START_NAMESPACE_ECAT7


template <class CListRecordT>
class CListModeDataECAT : public CListModeData
{
public:

  CListModeDataECAT(const std::string& listmode_filename_prefix);

  virtual std::string get_name() const;

  virtual shared_ptr<CListRecord> get_empty_record_sptr() const;

  virtual Succeeded get_next_record(CListRecord& record) const;

  virtual Succeeded reset();

  virtual SavedPosition save_get_position();

  virtual Succeeded set_get_position(const SavedPosition&);


  virtual bool has_delayeds() const { return true; }

private:
  std::string listmode_filename_prefix;
  mutable unsigned int current_lm_file;
  mutable shared_ptr<InputStreamWithRecords<CListRecordT, bool>> current_lm_data_ptr;
  mutable std::vector<std::vector<std::streampos>> saved_get_positions_for_each_lm_data;
  typedef std::pair<unsigned int, SavedPosition> GetPosition;
  std::vector<GetPosition> saved_get_positions;

  // const as it modifies only mutable elements
  // It has to be const as e.g. get_next_record calls it
  Succeeded open_lm_file(unsigned int) const;
  // shared_ptr<Scanner> scanner_sptr;
};

END_NAMESPACE_ECAT7
END_NAMESPACE_ECAT
END_NAMESPACE_STIR

#endif