Mark4File.h

//-*-C++-*-
/***************************************************************************
 *
 *   Copyright (C) 2004 by Craig West
 *   Licensed under the Academic Free License version 2.1
 *
 ***************************************************************************/
 
// dspsr/Kernel/Formats/mark4/dsp/Mark4File.h
 
#ifndef __Mark4File_h
#define __Mark4File_h
 
#include "dsp/File.h"
 
int decode_bcd(char in[4]);
 
namespace dsp {
 
  enum Modes { Standard,
               VLBA
  };
  
  class Mark4File : public File 
  {
  public:
    
    Mark4File (const char* filename = 0);
    
    ~Mark4File ();
 
    bool is_valid (const char *filename) const;
    
    
  protected:
 
    void open_file (const char* filename);
    
    uint64_t find_sync (int file_descriptor, uint64_t from = 0) const;
 
    void initalise ();
 
    int count_channels (int file_descriptor) const;
 
    MJD decode_date(uint64_t from = 0);
    
    unsigned int channels;
 
    char SYNC_pattern;
 
    Modes mode;
    
  private:
    
    char timestamp[17]; 
    
    bool VLBA_mode;
    
    
  };
}
 
 
#endif // __Mark4File_h