#include <DTDDUFileReader.h>

Inheritance diagram for DTDDUFileReader:

Public Member Functions
virtual bool	checkEndOfFile ()
uint64_t	dmaUnpack (bool &isData, int &nread)
	pre-unpack the data if read via DMA
	DTDDUFileReader (const edm::ParameterSet &pset)
	Constructor.
virtual int	fillRawData (edm::EventID &eID, edm::Timestamp &tstamp, FEDRawDataCollection *&data)
	Generate and fill FED raw data for a full event.
bool	isHeader (uint64_t word, bool dataTag)
	check for a 64 bits word to be a DDU header
bool	isTrailer (uint64_t word, bool dataTag, int wordCount)
	check for a 64 bits word to be a DDU trailer
void	swap (uint64_t &word)
	swapping the lsBits with the msBits
virtual	~DTDDUFileReader ()
	Destructor.
Private Attributes
int	dduID
edm::EventNumber_t	eventNumber
RawFile	inputFile
int	numberOfHeaderWords
bool	readFromDMA
edm::RunNumber_t	runNumber
int	skipEvents
Static Private Attributes
static const int	dduWordLength = 8

Detailed Description

Read DT ROS8 raw data files

Date:: 2010/02/03 16:58:24

Revision:: 1.11

Author:: M. Zanetti - INFN Padova

Definition at line 20 of file DTDDUFileReader.h.

Constructor & Destructor Documentation

DTDDUFileReader::DTDDUFileReader ( const edm::ParameterSet & pset )

Constructor.

Definition at line 32 of file DTDDUFileReader.cc.

References gather_cfg::cout, Exception, RawFile::fail(), lut2db_cfg::filename, edm::ParameterSet::getUntrackedParameter(), RawFile::ignore(), inputFile, numberOfHeaderWords, RawFile::open(), RawFile::read(), readFromDMA, runNumber, and skipEvents.

                                                            : 
  runNumber(1), eventNumber(1) {

  const string & filename = pset.getUntrackedParameter<string>("fileName");

  readFromDMA = pset.getUntrackedParameter<bool>("readFromDMA",true);
  numberOfHeaderWords = pset.getUntrackedParameter<int>("numberOfHeaderWords",10);
  skipEvents = pset.getUntrackedParameter<int>("skipEvents",0);  

  inputFile.open(filename.c_str());
  if( inputFile.fail() ) {
    throw cms::Exception("InputFileMissing") 
      << "[DTDDUFileReader]: the input file: " << filename <<" is not present";
  } else {
    cout << "DTDDUFileReader: DaqSource file '" << filename << "' was succesfully opened" << endl;
  }

  uint32_t runNumber_tmp;
  inputFile.read(dataPointer<uint32_t>( &runNumber_tmp ), 4);
  runNumber = runNumber_tmp;

  inputFile.ignore(4*(numberOfHeaderWords-1));
  
  if (skipEvents) { 
    cout<<""<<endl;
    cout<<"   Dear user, pleas be patient, "<<skipEvents<<" are being skipped .."<<endl;
    cout<<""<<endl;
  }

}

DTDDUFileReader::~DTDDUFileReader ( ) [virtual]

Destructor.

Definition at line 64 of file DTDDUFileReader.cc.

References RawFile::close(), and inputFile.

                                 {
      inputFile.close();
}

Member Function Documentation

bool DTDDUFileReader::checkEndOfFile ( ) [virtual]

Definition at line 235 of file DTDDUFileReader.cc.

References RawFile::eof(), and inputFile.

                                    {

  bool retval=false;
  if ( inputFile.eof() ) retval=true;
  return retval;

}

uint64_t DTDDUFileReader::dmaUnpack	(	bool &	isData,
		int &	nread
	)

pre-unpack the data if read via DMA

Definition at line 178 of file DTDDUFileReader.cc.

References data, inputFile, and RawFile::read().

Referenced by fillRawData().

                                                              {
  
  uint64_t dduWord = 0;

  uint32_t td[4];
  // read 4 32-bits word from the file;
  nread = inputFile.read(dataPointer<uint32_t>( &td[0] ), 4);
  nread += inputFile.read(dataPointer<uint32_t>( &td[1] ), 4);
  nread += inputFile.read(dataPointer<uint32_t>( &td[2] ), 4);
  nread += inputFile.read(dataPointer<uint32_t>( &td[3] ), 4);

  uint32_t data[2] = {0, 0};
  // adjust 4 32-bits words  into 2 32-bits words
  data[0] |= td[3] & 0x3ffff;
  data[0] |= (td[2] << 18 ) & 0xfffc0000;
  data[1] |= (td[2] >> 14 ) & 0x0f;
  data[1] |= (td[1] << 4 ) & 0x3ffff0;
  data[1] |= (td[0] << 22 ) & 0xffc00000;

  isData = ( td[0] >> 10 ) & 0x01;

  // push_back to a 64 word
  dduWord = (uint64_t(data[1]) << 32) | data[0];

  return dduWord;
}

int DTDDUFileReader::fillRawData	(	edm::EventID &	eID,
		edm::Timestamp &	tstamp,
		FEDRawDataCollection *&	data
	)		`[virtual]`

Generate and fill FED raw data for a full event.

Implements DaqBaseReader.

Definition at line 68 of file DTDDUFileReader.cc.

References filterCSVwithJSON::copy, gather_cfg::cout, data, FEDRawData::data(), dduID, dduWordLength, dmaUnpack(), eventNumber, FEDRawDataCollection::FEDData(), inputFile, isHeader(), isTrailer(), FEDNumbering::MINDTFEDID, RawFile::read(), readFromDMA, FEDRawData::resize(), runNumber, skipEvents, and swap().

                                                             {
  data = new FEDRawDataCollection();

  vector<uint64_t> eventData;
  size_t estimatedEventDimension = 102400; // dimensione hardcoded
  eventData.reserve(estimatedEventDimension); 
  uint64_t word = 0;

  bool haederTag = false;
  bool dataTag = true;
  bool headerAlreadyFound = false;
  
  int wordCount = 0;
  
  // getting the data word by word from the file
  // do it until you get the DDU trailer
  while ( !isTrailer(word, dataTag, wordCount) ) {
    //while ( !isTrailer(word) ) { 
    
    if (readFromDMA) {
      int nread;
      word = dmaUnpack(dataTag,nread);
      if ( nread<=0 ) {
        cout<<"[DTDDUFileReader]: ERROR! no more words and failed to get the trailer"<<endl;
        delete data; data=0;
        return false;
      }
    }
    
    else {
      int nread = inputFile.read(dataPointer<uint64_t>( &word ), dduWordLength);
      dataTag = false;
      if ( nread<=0 ) {
        cout<<"[DTDDUFileReader]: ERROR! failed to get the trailer"<<endl;
        delete data; data=0;
        return false;
      }
    }
    
    // get the DDU header
    if (!headerAlreadyFound) 
      if ( isHeader(word,dataTag)) {
        headerAlreadyFound=true; 
        haederTag=true;
      }
    
    // from now on fill the eventData with the ROS data
    if (haederTag) {
      
      if (readFromDMA) {
        // swapping only the 8 byte words
        if (dataTag) {
          swap(word);
        } // WARNING also the ddu status words have been swapped!
        // Control the correct interpretation in DDUUnpacker
      }
      
      eventData.push_back(word);
      wordCount++;
    }
    
  } 
  
  //     FEDTrailer candidate(reinterpret_cast<const unsigned char*>(&word));
  //     cout<<"EventSize: pushed back "<<eventData.size()
  //    <<";  From trailer "<<candidate.lenght()<<endl;
  
  // next event reading will start with meaningless trailer+header from DTLocalDAQ
  // those will be skipped automatically when seeking for the DDU header
  //if (eventData.size() > estimatedEventDimension) throw 2;
  
  // Eventually skipping events
  if ((int)eventNumber >= skipEvents) {

    // Setting the Event ID
    eID = EventID( runNumber, 1U, eventNumber);
    
    // eventDataSize = (Number Of Words)* (Word Size)
    int eventDataSize = eventData.size()*dduWordLength;
    

    if ( dduID<770 || dduID > 775 ) {
      cout<<"[DTDDUFileReader]: ERROR. DDU ID out of range. DDU id="<<dduID<<endl;
      // The FED ID is always the first in the DT range
      dduID = FEDNumbering::MINDTFEDID;
    } 
    FEDRawData& fedRawData = data->FEDData( dduID );
    fedRawData.resize(eventDataSize);
    
    copy(reinterpret_cast<unsigned char*>(&eventData[0]),
         reinterpret_cast<unsigned char*>(&eventData[0]) + eventDataSize, fedRawData.data());

  }

  return true;
    
}

bool DTDDUFileReader::isHeader	(	uint64_t	word,
		bool	dataTag
	)

check for a 64 bits word to be a DDU header

Definition at line 205 of file DTDDUFileReader.cc.

References FEDHeader::check(), dduID, eventNumber, and FEDHeader::sourceID().

Referenced by fillRawData().

                                                          {

  bool it_is = false;
  FEDHeader candidate(reinterpret_cast<const unsigned char*>(&word));
  if ( candidate.check() ) {
    // if ( candidate.check() && !dataTag) {
    it_is = true;
    dduID = candidate.sourceID();
    eventNumber++;
  }
 
  return it_is;
}

bool DTDDUFileReader::isTrailer	(	uint64_t	word,
		bool	dataTag,
		int	wordCount
	)

check for a 64 bits word to be a DDU trailer

Definition at line 220 of file DTDDUFileReader.cc.

References FEDTrailer::check(), and FEDTrailer::lenght().

Referenced by fillRawData().

                                                                          {

  bool it_is = false;
  FEDTrailer candidate(reinterpret_cast<const unsigned char*>(&word));
  if ( candidate.check() ) {
    //  if ( candidate.check() && !dataTag) {
    //cout<<"[DTDDUFileReader] "<<wordCount<<" - "<<candidate.lenght()<<endl;
    if ( wordCount == candidate.lenght())
      it_is = true;
  }
 
  return it_is;
}

void DTDDUFileReader::swap ( uint64_t & word )

swapping the lsBits with the msBits

Definition at line 168 of file DTDDUFileReader.cc.

References twoNibble64::lsBits, and twoNibble64::msBits.

Referenced by fillRawData().

                                          {
  
  twoNibble64* newWorld = reinterpret_cast<twoNibble64*>(&word);

  uint32_t msBits_tmp = newWorld->msBits;
  newWorld->msBits = newWorld->lsBits;
  newWorld->lsBits = msBits_tmp;
}