/** @file
 * $Source: /home/cvsmanager/yoda/techmodel/physics/S4Reader.cpp,v $
 * $Id: S4Reader.cpp,v 2.2 2004/12/09 08:48:54 kusanagi Exp $
 * $Author: kusanagi $
 * 
 * Implementation of the S4Reader class.
 */

#include <string>
#include <log4cxx/logger.h>
#include "S4Reader.h"

using namespace pamela;
using namespace pamela::S4;

static log4cxx::LoggerPtr logger = log4cxx::Logger::getLogger(_T("pamela.techmodel.S4.S4Reader"));

/**
 * Constructor. 
 */
S4Reader::S4Reader(void): 
  TechmodelAlgorithm(PacketType::Physics, "TechmodelS4Reader") { 
  logger->debug(_T("Constructor"));
  s4 = new S4Event();
}

/**
 * Get a string with the version info of the algorithm.
 */
std::string S4Reader::GetVersionInfo(void) const {
  return 
    "$Header: /home/cvsmanager/yoda/techmodel/physics/S4Reader.cpp,v 2.2 2004/12/09 08:48:54 kusanagi Exp $";
}

/**
 * Initialize the algorithm with a special run. This will initialize the
 * event reader routines for all packet types.
 */
void S4Reader::Init(PamelaRun *run) {
  logger->debug(_T("Initialize"));
  SetInputStream(run);
  run->WriteSubPacket(this, &s4, s4->Class());
}

/**
 * Unpack the S4 event from an input file.
 */
void S4Reader::RunEvent(int EventNumber) {
  
}

/**
 * Unpack the S4 data event from the physical packet.
 * Unfortunately the only definition available for S4 is "Rigth before the Neutron detector data"
 * consequently supposing the Neutron data (12 Bytes) always present S4 start 18 Bytes before the end of the packet
 */
void S4Reader::RunEvent(int EventNumber, const char subData[], long int length) {
   //char *data = new char[lenght];
   //memcpy(data, subData, lenght);
   int offset = length - 18; 
   s4->S4_REG_STATUS        = (((UINT8)subData[offset])&0xF0);
   s4->S4_DATA              = ((((UINT16)subData[offset]<<8)&0x0FFF) + (((UINT16)subData[offset+1])&0x00FF));
   s4->S4_CMD_NUM           = (((UINT8)subData[offset+2])&0xFF);
   s4->S4_RESP_LENGHT       = ((((UINT16)subData[offset+3]<<8)&0xFF00) + (((UINT16)subData[offset+4])&0x00FF));
   s4->S4_OVERALL_CHKCODE   = (((UINT8)subData[offset+5])&0xFF);
}