yoda/techmodel/EventReader.cpp

/** @file
 * $Author: kusanagi $
 * $Date: 2004/07/17 20:03:38 $
 * $Revision: 1.4 $
 * 
 * Implementation of the functions of a sample Algorithm class.
 * This file can be used as a templace to develop your own algorithm.
 */

#include <log4cpp/Category.hh>
#include <fstream>
#include "TechmodelAlgorithm.h"
#include "EventReader.h"
#include "ReaderAlgorithms.h"
#include "Exception.h"
#include "stdio.h"
extern "C" {
#include "CRC.h"
}

#define BYTE unsigned char

using namespace pamela;
using namespace pamela::techmodel;

static log4cpp::Category& cat = log4cpp::Category::getInstance("pamela.techmodel.EventReader");
static unsigned int prevPckCounter = 0;
static unsigned int prevPckOBT     = 0;
/**
 * Constructor. 
 */
EventReader::EventReader(void): 
  TechmodelAlgorithm(0, "TechmodelEventReader") { 
  cat <<  log4cpp::Priority::DEBUG
      <<  "Constructor "
      <<  "\n " << log4cpp::CategoryStream::ENDLINE;
  Header = new EventHeader();

  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::Physics,    new PhysicsReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::RunHeader,  new RunHeaderReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::RunTrailer, new RunTrailerReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::Log,        new LogReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::VarDump,    new VarDumpReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::ArrDump,    new ArrDumpReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::TabDump,    new TabDumpReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::Tmtc,       new TmtcReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::Mcmd,       new McmdReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibCal,   new CalibCalReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibCalPed,new CalibCalPedReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibCal,   new CalibAcReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibTrk1,  new CalibTrk1Reader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibTrk2,  new CalibTrk2Reader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibTrd,   new CalibTrdReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibTof,   new CalibTofReader()));
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibS4,    new CalibS4Reader()));
  /*
  TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::HA_Header_E5,
                                                  new E5Reader()));
*/
}

/**
 * Get a string with the version info of the algorithm.
 */
std::string EventReader::GetVersionInfo(void) const {
  return 
    "$Header: /home/cvsmanager/yoda/techmodel/EventReader.cpp,v 1.4 2004/07/17 20:03:38 kusanagi Exp $\n";
}

/**
 * Initialize the algorithm with a special run. This will initialize the
 * event reader routines for all packet types.
 */
void EventReader::Init(PamelaRun *run) {
    SetInputStream(run);
    
    //Create the structure of directories and create xxx.Header.root files
    run->WriteHeaders(this, &Header); 

    //Create the xxx.root in it's specific directory
    for (AlgorithmMap::iterator i = TechmodelAlgorithmMap.begin(); 
       i != TechmodelAlgorithmMap.end(); i++) {
       cat  <<  log4cpp::Priority::DEBUG 
            <<  " Initializing algo " << i->second->GetAlgorithmName()
            <<  "\n " << log4cpp::CategoryStream::ENDLINE;
       i->second->Init(run);
    }
    Run = dynamic_cast<TechmodelPamelaRun*>(run);
}

static void SkipToNextHeader(ifstream *);

/**
 * Read the next event header, call the reader algorithms that
 * correspond to its packet type, and read the event trailer.
 */

// 15 June 2004 ---note------------------
// A nice refacoring would require to not read again the packet data (which is
// read in the UnpackPscuHeader() and put directly in the
// EventAlgorithm->RunEvent(....) directly the data inside the packet.... will see later....
// 15 June 2004 ---note------------------
void EventReader::RunEvent(int EventNumber) {
  
  cat <<  log4cpp::Priority::ERROR <<  "Start Unpacking........"
      <<  "\n " << log4cpp::CategoryStream::ENDLINE;
  //for now i'll suppose that the raw file starts immediately with the right bytes
  //to insert a GetPacketStart()
  while (!InputFile->eof()){
    try {
      if (FindStart()) {
        if(UnpackPscuHeader()){
            const PacketType* type = Header->GetPscuHeader()->GetPacketType();
            AlgorithmMap::iterator i = TechmodelAlgorithmMap.find(type); 
            if (i != TechmodelAlgorithmMap.end()) {
                TechmodelAlgorithm *EventAlgorithm = i->second;
                EventAlgorithm->RunEvent(EventNumber, Header->GetPscuHeader()->GetPacketLenght());
                Run->FillTrees(type);
                Header->GetCounter()->Increment(type);
            } else {
            cat <<  log4cpp::Priority::ERROR 
                <<  "No way to read events of type" << type->GetName()
                <<  "\n " << log4cpp::CategoryStream::ENDLINE;
            throw Exception("No way to read events of type " + type->GetName());
        }
      } //else {
        //**TO BE DONE**   <<WRONG CRC l --- LOST PACKET>>//
        //Have to be defined a "WrongCRC" packet::Type?
        //}
     } 
    } catch (...) {
      //This have to be more detailed. More exceptions type are needed.
      cat <<  log4cpp::Priority::ERROR <<  "Couldn't read the event. Skipping to the next header."
          <<  "\n " << log4cpp::CategoryStream::ENDLINE;
    }
  }
  Header->GetCounter()->PrintCounters();
}

static void SkipToNextHeader(ifstream* TechmodelFile) {
  //  yeah.
}


/**
 * Unpack the PSCU header from a file into the structure.
 */
int EventReader::UnpackPscuHeader(void) throw (std::exception) {
  int response;
  char buff[16];
  InputFile->read(buff, sizeof(buff));
  
  prevPckCounter = 0;
  prevPckOBT     = 0;
  
  unsigned char PacketId1    = buff[3];
  unsigned char PacketId2    = buff[4];
  unsigned int  Counter      = (((UINT32)buff[5]<<16)&0x00FF0000) + (((UINT32)buff[6]<<8)&0x0000FF00) + (((UINT32)buff[7])&0x000000FF);
  unsigned int  OrbitalTime  = (((UINT32)buff[8]<<24)&0xFF000000) + (((UINT32)buff[9]<<16)&0x00FF0000) +  (((UINT32)buff[10]<<8)&0x0000FF00) + (((UINT32)buff[11])&0x000000FF);
  unsigned int  PacketLenght = (((UINT32)buff[12]<<16)&0x00FF0000) +  (((UINT32)buff[13]<<8)&0x0000FF00) + (((UINT32)buff[14])&0x000000FF);
  unsigned char CRC          = buff[15];

  if (Counter < prevPckCounter){
    cat <<  log4cpp::Priority::ERROR
        <<  " Packet counter is less than before of " << (prevPckCounter - Counter)
        <<  "\n " << log4cpp::CategoryStream::ENDLINE;
  }

  if (OrbitalTime < prevPckOBT){
      cat <<  log4cpp::Priority::WARN
          <<  " Orbital Time is less than before of " << (prevPckOBT - OrbitalTime)
          <<  "\n " << log4cpp::CategoryStream::ENDLINE;
  }

 
  if ((BYTE)CM_Compute_CRC16(0, (BYTE*)&buff, 15) == (BYTE)buff[15]){
    long int initPos = InputFile->tellg();
    long int finalPos;
    Header->GetPscuHeader()->SetPacketId(PacketId1, PacketId2);
    Header->GetPscuHeader()->SetCounter(Counter);
    Header->GetPscuHeader()->SetOrbitalTime(OrbitalTime);
    //PacketLength is the length of the whole DATApacket starting from the first byte after the header
    //plus the CRC legth (which varies for each type of packet)
    Header->GetPscuHeader()->SetPacketLenght(PacketLenght);
    Header->GetPscuHeader()->SetCRC(CRC);
    
    //commented out because of the above test code
    InputFile->seekg(Header->GetPscuHeader()->GetPacketLenght(), std::ios::cur);
    FindStart();
    finalPos =  (long int)InputFile->tellg() - (1 + initPos + (long int)(Header->GetPscuHeader()->GetPacketLenght()));
        if(finalPos == 0){
            cat <<  log4cpp::Priority::INFO <<  " Correct packet length \n" 
                <<  "\n " << log4cpp::CategoryStream::ENDLINE;
            } 
        if (finalPos > 0 && finalPos < 64) {
            cat <<  log4cpp::Priority::WARN
                <<  " Correct packet length: Padded of " << finalPos << " bytes \n"
                <<  "\n " << log4cpp::CategoryStream::ENDLINE;
        } 
        if (finalPos > 64){
            cat <<  log4cpp::Priority::ERROR <<  " Wrong packet length? (because of wrong padding?) \n"
                <<  "\n " << log4cpp::CategoryStream::ENDLINE;
        }
        InputFile->seekg(initPos, std::ios::beg);
        response =  true;
  } else {
    cat <<  log4cpp::Priority::ERROR <<  " WRONG CRC FOR HEADER "
        <<  "\n " << log4cpp::CategoryStream::ENDLINE;
    response =  false; 
  }

    char tmpId1[4];
    char tmpId2[4];
    char tmpLength[12];
    char tmpStart[100];
    char tmpCRC[4];
    sprintf(tmpId1, "%02X", PacketId1);
    sprintf(tmpId2, "%02X", PacketId2);
    sprintf(tmpLength, "%06X", Header->GetPscuHeader()->GetPacketLenght());
    sprintf(tmpStart, "%X", ((long int)(InputFile->tellg()) - 16));
    sprintf(tmpCRC, "%02X", CRC);
    cat <<  log4cpp::Priority::INFO  
        <<  "\n Packet Counter (decimal) : "  <<  Counter
        <<  "\n Id1 - Id2                : "  <<  tmpId1 <<  " - " <<  tmpId2
        <<  "\n Orbital Time (decimal)   : "  <<  OrbitalTime
        <<  "\n Lenght                   : "  <<  tmpLength
        <<  "\n CRC                      : "  <<  tmpCRC
        <<  "\n Header Start Position    : "  <<  tmpStart
        <<  "\n " << log4cpp::CategoryStream::ENDLINE;
  return response;
}

/**
 * Unpack the trailer of a PSCU event into the structure.
 */
void EventReader::UnpackPscuTrailer(void) throw (std::exception) {

}

/**
 * Find the next starting poin for the PSCU event looking for a {0xFA, 0xFE, 0xDE} sequence
 */
int EventReader::FindStart(void) throw (std::exception) {
//search an hexadecimal sequence in a file
//subSign    ------> pointer to the sequence buffer
//subSignDim ------> dimension of the buffer
// at exit
// return true if founds a match (else false)
// subF point rigth after the match, if found. Else EOF.
//Maurizio 15/11/2002-----------------------
  const unsigned char subSign[3]={0xFA, 0xFE, 0xDE};
  int subSignDim = 3;
//------------------------------------------
  int subIndex = 0;
  char dataByte;
  /*InputFile->read(fileByte, 1); 
    if ( *fileByte ==  *(subSign+subIndex)){
       if (subIndex++ == (subSignDim-1)) {
        InputFile->seekg(-(subIndex), std::ios::cur);
        return 1;
      }
      }*/
  while (!InputFile->eof()) {
    InputFile->get(dataByte);
    if (dataByte == (char)(*(subSign+subIndex))){
      if (subIndex++ == (subSignDim-1)) {
         InputFile->seekg(-(subIndex), std::ios::cur);
        return 1;
       }
    } else {
      if (InputFile->eof()) {
        throw Exception("Extra bytes over the last packets");
      } else {
        return 0;
      }
      //InputFile->seekg(-(subIndex+1), std::ios::cur);
      //subIndex = 0;
    } 
  }
  return 0;
} 

ClassImp(EventReader)
1	kusanagi	1.1	/** @file
2	kusanagi	1.2	* $Author: kusanagi $
3	kusanagi	1.5	* $Date: 2004/07/17 20:03:38 $
4			* $Revision: 1.4 $
5	kusanagi	1.1	*
6			* Implementation of the functions of a sample Algorithm class.
7			* This file can be used as a templace to develop your own algorithm.
8			*/
9
10			#include <log4cpp/Category.hh>
11			#include <fstream>
12			#include "TechmodelAlgorithm.h"
13			#include "EventReader.h"
14			#include "ReaderAlgorithms.h"
15			#include "Exception.h"
16			#include "stdio.h"
17			extern "C" {
18			#include "CRC.h"
19			}
20
21			#define BYTE unsigned char
22
23			using namespace pamela;
24			using namespace pamela::techmodel;
25
26			static log4cpp::Category& cat = log4cpp::Category::getInstance("pamela.techmodel.EventReader");
27			static unsigned int prevPckCounter = 0;
28			static unsigned int prevPckOBT = 0;
29			/**
30			* Constructor.
31			*/
32			EventReader::EventReader(void):
33			TechmodelAlgorithm(0, "TechmodelEventReader") {
34			cat << log4cpp::Priority::DEBUG
35			<< "Constructor "
36			<< "\n " << log4cpp::CategoryStream::ENDLINE;
37			Header = new EventHeader();
38	kusanagi	1.5
39	kusanagi	1.1	TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::Physics, new PhysicsReader()));
40			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::RunHeader, new RunHeaderReader()));
41			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::RunTrailer, new RunTrailerReader()));
42	kusanagi	1.3	TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::Log, new LogReader()));
43			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::VarDump, new VarDumpReader()));
44			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::ArrDump, new ArrDumpReader()));
45			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::TabDump, new TabDumpReader()));
46			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::Tmtc, new TmtcReader()));
47			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::Mcmd, new McmdReader()));
48			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibCal, new CalibCalReader()));
49			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibCalPed,new CalibCalPedReader()));
50			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibCal, new CalibAcReader()));
51			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibTrk1, new CalibTrk1Reader()));
52			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibTrk2, new CalibTrk2Reader()));
53			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibTrd, new CalibTrdReader()));
54			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibTof, new CalibTofReader()));
55			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::CalibS4, new CalibS4Reader()));
56	kusanagi	1.1	/*
57			TechmodelAlgorithmMap.insert(AlgorithmMap::value_type(PacketType::HA_Header_E5,
58			new E5Reader()));
59			*/
60			}
61
62			/**
63			* Get a string with the version info of the algorithm.
64			*/
65			std::string EventReader::GetVersionInfo(void) const {
66			return
67	kusanagi	1.5	"$Header: /home/cvsmanager/yoda/techmodel/EventReader.cpp,v 1.4 2004/07/17 20:03:38 kusanagi Exp $\n";
68	kusanagi	1.1	}
69
70			/**
71			* Initialize the algorithm with a special run. This will initialize the
72			* event reader routines for all packet types.
73			*/
74			void EventReader::Init(PamelaRun *run) {
75			SetInputStream(run);
76
77			//Create the structure of directories and create xxx.Header.root files
78			run->WriteHeaders(this, &Header);
79
80			//Create the xxx.root in it's specific directory
81			for (AlgorithmMap::iterator i = TechmodelAlgorithmMap.begin();
82			i != TechmodelAlgorithmMap.end(); i++) {
83			cat << log4cpp::Priority::DEBUG
84			<< " Initializing algo " << i->second->GetAlgorithmName()
85			<< "\n " << log4cpp::CategoryStream::ENDLINE;
86			i->second->Init(run);
87			}
88			Run = dynamic_cast<TechmodelPamelaRun*>(run);
89			}
90
91			static void SkipToNextHeader(ifstream *);
92
93			/**
94			* Read the next event header, call the reader algorithms that
95			* correspond to its packet type, and read the event trailer.
96			*/
97
98			// 15 June 2004 ---note------------------
99			// A nice refacoring would require to not read again the packet data (which is
100			// read in the UnpackPscuHeader() and put directly in the
101			// EventAlgorithm->RunEvent(....) directly the data inside the packet.... will see later....
102			// 15 June 2004 ---note------------------
103			void EventReader::RunEvent(int EventNumber) {
104
105			cat << log4cpp::Priority::ERROR << "Start Unpacking........"
106			<< "\n " << log4cpp::CategoryStream::ENDLINE;
107			//for now i'll suppose that the raw file starts immediately with the right bytes
108			//to insert a GetPacketStart()
109			while (!InputFile->eof()){
110			try {
111			if (FindStart()) {
112			if(UnpackPscuHeader()){
113			const PacketType* type = Header->GetPscuHeader()->GetPacketType();
114			AlgorithmMap::iterator i = TechmodelAlgorithmMap.find(type);
115			if (i != TechmodelAlgorithmMap.end()) {
116			TechmodelAlgorithm *EventAlgorithm = i->second;
117			EventAlgorithm->RunEvent(EventNumber, Header->GetPscuHeader()->GetPacketLenght());
118			Run->FillTrees(type);
119			Header->GetCounter()->Increment(type);
120			} else {
121			cat << log4cpp::Priority::ERROR
122			<< "No way to read events of type" << type->GetName()
123			<< "\n " << log4cpp::CategoryStream::ENDLINE;
124			throw Exception("No way to read events of type " + type->GetName());
125			}
126			} //else {
127			//TO BE DONE <<WRONG CRC l --- LOST PACKET>>//
128			//Have to be defined a "WrongCRC" packet::Type?
129			//}
130			}
131			} catch (...) {
132			//This have to be more detailed. More exceptions type are needed.
133			cat << log4cpp::Priority::ERROR << "Couldn't read the event. Skipping to the next header."
134			<< "\n " << log4cpp::CategoryStream::ENDLINE;
135			}
136			}
137			Header->GetCounter()->PrintCounters();
138			}
139
140			static void SkipToNextHeader(ifstream* TechmodelFile) {
141			// yeah.
142			}
143
144
145
146			/**
147			* Unpack the PSCU header from a file into the structure.
148			*/
149			int EventReader::UnpackPscuHeader(void) throw (std::exception) {
150			int response;
151			char buff[16];
152			InputFile->read(buff, sizeof(buff));
153
154			prevPckCounter = 0;
155			prevPckOBT = 0;
156
157			unsigned char PacketId1 = buff[3];
158			unsigned char PacketId2 = buff[4];
159			unsigned int Counter = (((UINT32)buff[5]<<16)&0x00FF0000) + (((UINT32)buff[6]<<8)&0x0000FF00) + (((UINT32)buff[7])&0x000000FF);
160			unsigned int OrbitalTime = (((UINT32)buff[8]<<24)&0xFF000000) + (((UINT32)buff[9]<<16)&0x00FF0000) + (((UINT32)buff[10]<<8)&0x0000FF00) + (((UINT32)buff[11])&0x000000FF);
161			unsigned int PacketLenght = (((UINT32)buff[12]<<16)&0x00FF0000) + (((UINT32)buff[13]<<8)&0x0000FF00) + (((UINT32)buff[14])&0x000000FF);
162			unsigned char CRC = buff[15];
163
164			if (Counter < prevPckCounter){
165			cat << log4cpp::Priority::ERROR
166			<< " Packet counter is less than before of " << (prevPckCounter - Counter)
167			<< "\n " << log4cpp::CategoryStream::ENDLINE;
168			}
169
170			if (OrbitalTime < prevPckOBT){
171			cat << log4cpp::Priority::WARN
172			<< " Orbital Time is less than before of " << (prevPckOBT - OrbitalTime)
173			<< "\n " << log4cpp::CategoryStream::ENDLINE;
174			}
175
176
177			if ((BYTE)CM_Compute_CRC16(0, (BYTE*)&buff, 15) == (BYTE)buff[15]){
178			long int initPos = InputFile->tellg();
179			long int finalPos;
180			Header->GetPscuHeader()->SetPacketId(PacketId1, PacketId2);
181			Header->GetPscuHeader()->SetCounter(Counter);
182			Header->GetPscuHeader()->SetOrbitalTime(OrbitalTime);
183			//PacketLength is the length of the whole DATApacket starting from the first byte after the header
184			//plus the CRC legth (which varies for each type of packet)
185			Header->GetPscuHeader()->SetPacketLenght(PacketLenght);
186			Header->GetPscuHeader()->SetCRC(CRC);
187
188			//commented out because of the above test code
189			InputFile->seekg(Header->GetPscuHeader()->GetPacketLenght(), std::ios::cur);
190			FindStart();
191			finalPos = (long int)InputFile->tellg() - (1 + initPos + (long int)(Header->GetPscuHeader()->GetPacketLenght()));
192			if(finalPos == 0){
193			cat << log4cpp::Priority::INFO << " Correct packet length \n"
194			<< "\n " << log4cpp::CategoryStream::ENDLINE;
195			}
196			if (finalPos > 0 && finalPos < 64) {
197			cat << log4cpp::Priority::WARN
198			<< " Correct packet length: Padded of " << finalPos << " bytes \n"
199			<< "\n " << log4cpp::CategoryStream::ENDLINE;
200			}
201			if (finalPos > 64){
202			cat << log4cpp::Priority::ERROR << " Wrong packet length? (because of wrong padding?) \n"
203			<< "\n " << log4cpp::CategoryStream::ENDLINE;
204			}
205			InputFile->seekg(initPos, std::ios::beg);
206			response = true;
207			} else {
208			cat << log4cpp::Priority::ERROR << " WRONG CRC FOR HEADER "
209			<< "\n " << log4cpp::CategoryStream::ENDLINE;
210			response = false;
211			}
212
213			char tmpId1[4];
214			char tmpId2[4];
215			char tmpLength[12];
216			char tmpStart[100];
217			char tmpCRC[4];
218			sprintf(tmpId1, "%02X", PacketId1);
219			sprintf(tmpId2, "%02X", PacketId2);
220	kusanagi	1.4	sprintf(tmpLength, "%06X", Header->GetPscuHeader()->GetPacketLenght());
221	kusanagi	1.1	sprintf(tmpStart, "%X", ((long int)(InputFile->tellg()) - 16));
222			sprintf(tmpCRC, "%02X", CRC);
223			cat << log4cpp::Priority::INFO
224			<< "\n Packet Counter (decimal) : " << Counter
225			<< "\n Id1 - Id2 : " << tmpId1 << " - " << tmpId2
226			<< "\n Orbital Time (decimal) : " << OrbitalTime
227			<< "\n Lenght : " << tmpLength
228			<< "\n CRC : " << tmpCRC
229			<< "\n Header Start Position : " << tmpStart
230			<< "\n " << log4cpp::CategoryStream::ENDLINE;
231			return response;
232			}
233
234			/**
235			* Unpack the trailer of a PSCU event into the structure.
236			*/
237			void EventReader::UnpackPscuTrailer(void) throw (std::exception) {
238
239			}
240
241			/**
242			* Find the next starting poin for the PSCU event looking for a {0xFA, 0xFE, 0xDE} sequence
243			*/
244			int EventReader::FindStart(void) throw (std::exception) {
245			//search an hexadecimal sequence in a file
246			//subSign ------> pointer to the sequence buffer
247			//subSignDim ------> dimension of the buffer
248			// at exit
249			// return true if founds a match (else false)
250			// subF point rigth after the match, if found. Else EOF.
251			//Maurizio 15/11/2002-----------------------
252			const unsigned char subSign[3]={0xFA, 0xFE, 0xDE};
253			int subSignDim = 3;
254			//------------------------------------------
255			int subIndex = 0;
256			char dataByte;
257			/*InputFile->read(fileByte, 1);
258			if ( fileByte == (subSign+subIndex)){
259			if (subIndex++ == (subSignDim-1)) {
260			InputFile->seekg(-(subIndex), std::ios::cur);
261			return 1;
262			}
263			}*/
264			while (!InputFile->eof()) {
265			InputFile->get(dataByte);
266			if (dataByte == (char)(*(subSign+subIndex))){
267			if (subIndex++ == (subSignDim-1)) {
268			InputFile->seekg(-(subIndex), std::ios::cur);
269			return 1;
270			}
271			} else {
272			if (InputFile->eof()) {
273			throw Exception("Extra bytes over the last packets");
274			} else {
275			return 0;
276			}
277			//InputFile->seekg(-(subIndex+1), std::ios::cur);
278			//subIndex = 0;
279			}
280			}
281			return 0;
282			}
283
284			ClassImp(EventReader)