/** @file
 * $Source: /home/cvsmanager/yoda/techmodel/LogReader.cpp,v $
 * $Id: LogReader.cpp,v 2.4 2005/03/03 13:06:39 kusanagi Exp $
 * $Author: kusanagi $
 * 
 * Implementation of the LogReader class.
* ToBeDone:
* Control the CRC for the entire data Packet not just for single records
 */

#define UINT unsigned int
#define BYTE  unsigned char
#include <string>
#include <log4cxx/logger.h>
extern "C" {
#include <sys/time.h>
#include "CRC.h"
}

#include <fstream>
#include "stdio.h"
#include "ReaderAlgorithms.h"
#include "event/log/LogRecord.h"

using namespace pamela;
using namespace pamela::techmodel;

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

/**
 * Constructor. 
 */
LogReader::LogReader(void): 
  TechmodelAlgorithm(PacketType::Log, "TechmodelLogReader") { 
  logger->debug(_T("Constructor"));
  Log = new LogEvent();
}

/**
 * Get a string with the version info of the algorithm.
 */
std::string LogReader::GetVersionInfo(void) const {
  return 
    "$Header: /home/cvsmanager/yoda/techmodel/LogReader.cpp,v 2.4 2005/03/03 13:06:39 kusanagi Exp $\n";
}

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

/**
 * Unpack the Log event from an input file.
 */
void LogReader::RunEvent(int EventNumber, long int length) throw (WrongCRCException){
    char     *subData;
    char      eventCRC[2];
    UINT16    subCRC;      //CRC of the data
    UINT16    readCRC;     //CRC read from the end of the subpacket
    long int  dataLength;
 
    //the 2 bytes subtracted belong to the final event CRC bytes
    dataLength = length - (long int)2;

    subData = new char[dataLength];
    //InputFile->read(subData, sizeof(unsigned char)*dataLength);
    InputFile->read(subData, length);
    subCRC = CM_Compute_CRC16(0, (UINT8*)subData, dataLength);

    //took the final CRC to compare it with the previous calculated CRC of the data
    readCRC = (((UINT16)(eventCRC[length - 2]<<8))&0xFF00) + (((UINT16)eventCRC[length - 1])&0x00FF);

    //if (subCRC != readCRC) throw WrongCRCException(" Wrong CRC for Log Packet ");
    Log->COMPILATION_TIMESTAMP = (((UINT32)subData[0]<<24)&0xFF000000) + (((UINT32)subData[1]<<16)&0x00FF0000) +  (((UINT32)subData[2]<<8)&0x0000FF00) + (((UINT32)subData[3])&0x000000FF);

    long int offset = 4;
    int i = 0;
    LogRecord* rec;
    Log->Records->Clear();
    TClonesArray &recs = *(Log->Records);
    
    while (offset < dataLength){
        rec = new(recs[i++]) LogRecord(); //add a new Log
        rec->RECORD_OBT     = (((UINT32)subData[offset]<<24)&0xFF000000) + (((UINT32)subData[offset+1]<<16)&0x00FF0000) +  (((UINT32)subData[offset+2]<<8)&0x0000FF00) + (((UINT32)subData[offset+3])&0x000000FF);
        rec->MASKTYPE       = (((UINT8)subData[offset+4])&0xFF);
        rec->FILE_ID        = (((UINT8)subData[offset+5])&0xFF);
        rec->LINE_NO        = ((((UINT16)subData[offset+6]<<8)&0xFF00) + (((UINT16)subData[offset+7])&0x00FF));
        rec->INFO1          = (((UINT32)subData[offset+8]<<24)&0xFF000000) + (((UINT32)subData[offset+9]<<16)&0x00FF0000) +  (((UINT32)subData[offset+10]<<8)&0x0000FF00) + (((UINT32)subData[offset+11])&0x000000FF);
        offset = offset + 12;
    }
    //delete [] subData;
}