FadcFile.h

//-*-C++-*-
/***************************************************************************
 *
 *   Copyright (C) 2006 by Eric Plum
 *   Licensed under the Academic Free License version 2.1
 *
 ***************************************************************************/
 
#ifndef __FadcFile_h
#define __FadcFile_h
 
#include "dsp/File.h"
 
struct two_bit_out{
  unsigned lRe  :2;
  unsigned lIm   :2;
  unsigned rRe  :2;
  unsigned rIm   :2;
};
 
struct four_bit_out{
  unsigned Re  :4;
  unsigned Im   :4;
};
 
 
namespace dsp {
 
        class FadcFile : public File
        {
          public:
          
                FadcFile(const char* filename=0);
          
                ~FadcFile ();
          
                bool is_valid(const char* filename) const;
 
                
          protected:
          
                virtual void open_file (const char* filename);
                
                static std::string get_header (const char* filename);
                
                // also switches sign of the imaginary values
                void writeByte(FILE* outfile, two_bit_out two);
                void writeByte(FILE* outfile, four_bit_out four);
 
                int createDataFile(char* expFileName, long firstFile, long lastFile, long* offset_tsmps_file0, long* offset_tsmps, int nbit, int nPol, int nChan, int nADCperCard, long buffers_per_file, long bytes_per_buffer, int expect_magic_code);
                // offest_tsmps refers to the number of time samples from the beginning of the file (0 and firstFile) where the
                // usable data starts (i.e. complete time samples that contain measurement data)
                
                int read_blockMap(long *buffers_per_file, long *bytes_per_buffer);
                
                bool fileExists (char* fileName);
                uint64_t fileSize(char* fileName);
        };
 
}
#endif // !defined(__FadcFile_h)