/data3/calcul/jacquem/working_dir/Micromegas/micromegasFrameWork/src/parser/AcquisitionParser.cpp

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/* @version $Revision: 1776 $ * @modifiedby $Author: jacquem $ * @lastmodified $Date: 2012-06-13 16:43:36 +0200 (Wed, 13 Jun 2012) $ */


#include "parser/AcquisitionParser.hh"
#include "tools/Log.hh"


using namespace std;

AcquisitionParser::AcquisitionParser(Run& aRun, FILE *anInputFile,ui32 _lastEventId) : run(aRun),computeCrc(false), skipNbEvent(0) {
  inputFile = anInputFile;
  lastEventId = _lastEventId;
  crc = new CrcCheck();
  FILE_LOG(logDEBUG) << "--AcquisitionParser  crc = new CrcCheck()["<<  crc << "]"  << endl;


}; // AquisitionParser



//-------------------------------------------------------------------
/* Convert given gray code into binary */
/* 1101011001 (gray) -> 1001101110 (binary) */
/* The purpose of this function is to convert an unsigned
binary number to reflected binary Gray code. */
unsigned int AcquisitionParser::binaryToGray(unsigned int bin) {
  return (bin >> 1) ^ bin;
} // binaryToGray

/* Convert given binary into gray code */
/* 1101011001 (binary) -> 1011110101 (gray) */
/* all codes give the same result */


//-------------------------------------------------------------------
unsigned int AcquisitionParser::grayToBinary(unsigned int gray) {

  // loop always for 32 bits
  unsigned int bin = ((gray >> 31) & 1) << 31;
  for (int bit = 30; bit >= 0; --bit)
    bin += ( ((gray >> bit) & 1) ^ ((bin >> (bit + 1)) & 1) ) << bit;
  return(bin);


} // grayToBinary


//-------------------------------------------------------------------
void AcquisitionParser::setComputeCrcFlag(bool value )
{
  computeCrc = value ;
  if ( value == true )
  {
     crc->reset() ;   // reset crc value to 0xFFFF for next control
  }
}

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