LuMPFile.h

//-*-C++-*-
/***************************************************************************
 *
 *   Copyright (C) 2011, 2013 by James M Anderson  (MPIfR)
 *   Licensed under the Academic Free License version 2.1
 *
 ***************************************************************************/
 
 
 
#ifndef __LuMPFile_h
#define __LuMPFile_h
 
#include "dsp/File.h"
#include "dsp/LuMPObservation.h"
 
namespace dsp {
 
  class LuMPFile : public File 
  {
 
  public:
 
    LuMPFile (const char* filename=0);
 
    bool is_valid (const char* filename) const;
 
    virtual LuMPObservation* get_lump_info () { return dynamic_cast<LuMPObservation*>(get_info()); }
 
    virtual const LuMPObservation* get_lump_info () const { return dynamic_cast<const LuMPObservation*>(get_info()); }
 
  protected:
 
    friend class LuMPUnpacker;
 
    virtual void open_file (const char* filename);
 
    virtual int64_t load_bytes (unsigned char* buffer, uint64_t bytes);
    
    virtual int64_t seek_bytes (uint64_t bytes);
      
 
    virtual int64_t fstat_file_ndat(uint64_t tailer_bytes=0);
    
    static std::string get_header (const char* filename);
 
 
    int64_t file_data_position;
  };
 
}
 
#endif // !defined(__LuMPFile_h)