[u/mrichter/AliRoot.git] / RAW / AliRawReaderDate.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

///////////////////////////////////////////////////////////////////////////////
///
/// This is a class for reading raw data from a date file or event.
///
/// The AliRawReaderDate is constructed either with a pointer to a
/// date event or with a file name and an event number.
///
///////////////////////////////////////////////////////////////////////////////

#include "AliRawReaderDate.h"
#ifdef ALI_DATE
#include "event.h"
#endif

ClassImp(AliRawReaderDate)


AliRawReaderDate::AliRawReaderDate(
#ifdef ALI_DATE
				   void* event, Bool_t owner
#else
				   void* /* event */, Bool_t owner
#endif
				   ) :
  fFile(NULL),
  fEvent(NULL),
  fSubEvent(NULL),
  fEquipment(NULL),
  fPosition(NULL),
  fEnd(NULL),
  fOwner(owner)
{
// create an object to read digits from the given date event

#ifdef ALI_DATE
  fEvent = (eventHeaderStruct*) event;
#else
  Fatal("AliRawReaderDate", "this class was compiled without DATE");
#endif
}

AliRawReaderDate::AliRawReaderDate(
#ifdef ALI_DATE
				   const char* fileName, Int_t eventNumber
#else
				   const char* /*fileName*/, 
				   Int_t /*eventNumber*/
#endif
				   ) :
  fFile(NULL),
  fEvent(NULL),
  fSubEvent(NULL),
  fEquipment(NULL),
  fPosition(NULL),
  fEnd(NULL),
  fOwner(kTRUE)
{
// create an object to read digits from the given date event

#ifdef ALI_DATE
  fFile = fopen(fileName, "rb");
  if (!fFile) {
    Error("AliRawReaderDate", "could not open file %s", fileName);
    fIsValid = kFALSE;
    return;
  }
  if (eventNumber < 0) return;

  eventHeaderStruct header;
  UInt_t headerSize = sizeof(eventHeaderStruct);
  while (fread(&header, 1, headerSize, fFile) == headerSize) {
    if (eventNumber == 0) {
      UChar_t* buffer = new UChar_t[header.eventSize];
      fseek(fFile, -(long)headerSize, SEEK_CUR);
      if (fread(buffer, 1, header.eventSize, fFile) != header.eventSize) break;
      fEvent = (eventHeaderStruct*) buffer;
      break;
    }
    fseek(fFile, header.eventSize-headerSize, SEEK_CUR);
    eventNumber--;
  }

#else
  Fatal("AliRawReaderDate", "this class was compiled without DATE");
#endif
}

AliRawReaderDate::AliRawReaderDate(const AliRawReaderDate& rawReader) :
  AliRawReader(rawReader),
  fFile(rawReader.fFile),
  fEvent(rawReader.fEvent),
  fSubEvent(rawReader.fSubEvent),
  fEquipment(rawReader.fEquipment),
  fPosition(rawReader.fPosition),
  fEnd(rawReader.fEnd),
  fOwner(rawReader.fOwner)

{
// copy constructor

  Fatal("AliRawReaderDate", "copy constructor not implemented");
}

AliRawReaderDate& AliRawReaderDate::operator = (const AliRawReaderDate& 
						/*rawReader*/)
{
// assignment operator

  Fatal("operator =", "assignment operator not implemented");
  return *this;
}

AliRawReaderDate::~AliRawReaderDate()
{
// destructor

#ifdef ALI_DATE
  if (fEvent && fOwner) delete[] fEvent;
  if (fFile) {
    fclose(fFile);
  }
#endif
}


UInt_t AliRawReaderDate::GetType() const
{
// get the type from the event header

#ifdef ALI_DATE
  if (!fEvent) return 0;
  return fEvent->eventType;
#else
  return 0;
#endif
}

UInt_t AliRawReaderDate::GetRunNumber() const
{
// get the run number from the event header

#ifdef ALI_DATE
  if (!fEvent) return 0;
  return fEvent->eventRunNb;
#else
  return 0;
#endif
}

const UInt_t* AliRawReaderDate::GetEventId() const
{
// get the event id from the event header

#ifdef ALI_DATE
  if (!fEvent) return NULL;
  return fEvent->eventId;
#else
  return NULL;
#endif
}

const UInt_t* AliRawReaderDate::GetTriggerPattern() const
{
// get the trigger pattern from the event header

#ifdef ALI_DATE
  if (!fEvent) return NULL;
  return fEvent->eventTriggerPattern;
#else
  return NULL;
#endif
}

const UInt_t* AliRawReaderDate::GetDetectorPattern() const
{
// get the detector pattern from the event header

#ifdef ALI_DATE
  if (!fEvent) return NULL;
  return fEvent->eventDetectorPattern;
#else
  return NULL;
#endif
}

const UInt_t* AliRawReaderDate::GetAttributes() const
{
// get the type attributes from the event header

#ifdef ALI_DATE
  if (!fEvent) return NULL;
  return fEvent->eventTypeAttribute;
#else
  return NULL;
#endif
}

const UInt_t* AliRawReaderDate::GetSubEventAttributes() const
{
// get the type attributes from the sub event header

#ifdef ALI_DATE
  if (!fSubEvent) return NULL;
  return fSubEvent->eventTypeAttribute;
#else
  return NULL;
#endif
}

UInt_t AliRawReaderDate::GetLDCId() const
{
// get the LDC Id from the event header

#ifdef ALI_DATE
  if (!fSubEvent) return 0;
  return fSubEvent->eventLdcId;
#else
  return 0;
#endif
}

UInt_t AliRawReaderDate::GetGDCId() const
{
// get the GDC Id from the event header

#ifdef ALI_DATE
  if (!fEvent) return 0;
  return fEvent->eventGdcId;
#else
  return 0;
#endif
}

UInt_t AliRawReaderDate::GetTimestamp() const
{
// get the timestamp from the event header

#ifdef ALI_DATE
  if (!fEvent) return 0;
  return fEvent->eventTimestamp;
#else
  return 0;
#endif
}

Int_t AliRawReaderDate::GetEquipmentSize() const
{
// get the size of the equipment (including the header)

#ifdef ALI_DATE
  if (!fEquipment) return 0;
  if (fSubEvent->eventVersion <= 0x00030001) {
    return fEquipment->equipmentSize + sizeof(equipmentHeaderStruct);
  } else {
    return fEquipment->equipmentSize;
  }
#else
  return 0;
#endif
}

Int_t AliRawReaderDate::GetEquipmentType() const
{
// get the type from the equipment header

#ifdef ALI_DATE
  if (!fEquipment) return -1;
  return fEquipment->equipmentType;
#else
  return 0;
#endif
}

Int_t AliRawReaderDate::GetEquipmentId() const
{
// get the ID from the equipment header

#ifdef ALI_DATE
  if (!fEquipment) return -1;
  return fEquipment->equipmentId;
#else
  return 0;
#endif
}

const UInt_t* AliRawReaderDate::GetEquipmentAttributes() const
{
// get the attributes from the equipment header

#ifdef ALI_DATE
  if (!fEquipment) return NULL;
  return fEquipment->equipmentTypeAttribute;
#else
  return 0;
#endif
}

Int_t AliRawReaderDate::GetEquipmentElementSize() const
{
// get the basic element size from the equipment header

#ifdef ALI_DATE
  if (!fEquipment) return 0;
  return fEquipment->equipmentBasicElementSize;
#else
  return 0;
#endif
}

Int_t AliRawReaderDate::GetEquipmentHeaderSize() const
{
  // Get the equipment header size
  // 28 bytes by default
#ifdef ALI_DATE
  return sizeof(equipmentHeaderStruct);
#else
  return 0;
#endif
}

Bool_t AliRawReaderDate::ReadHeader()
{
// read a data header at the current position
// returns kFALSE if the data header could not be read

  fErrorCode = 0;

#ifdef ALI_DATE
  fHeader = NULL;
  if (!fEvent) return kFALSE;
  // check whether there are sub events
  if (fEvent->eventSize <= fEvent->eventHeadSize) return kFALSE;

  do {
    // skip payload (if event was not selected)
    if (fCount > 0) fPosition += fCount;

    // get the first or the next equipment if at the end of an equipment
    if (!fEquipment || (fPosition >= fEnd)) {
      fEquipment = NULL;

      // get the first or the next sub event if at the end of a sub event
      if (!fSubEvent || 
	  (fPosition >= ((UChar_t*)fSubEvent) + fSubEvent->eventSize)) {

	// check for end of event data
	if (fPosition >= ((UChar_t*)fEvent)+fEvent->eventSize) return kFALSE;
        if (!TEST_SYSTEM_ATTRIBUTE(fEvent->eventTypeAttribute, 
                                   ATTR_SUPER_EVENT)) {
	  fSubEvent = fEvent;   // no super event
	} else if (fSubEvent) {
	  fSubEvent = (eventHeaderStruct*) (((UChar_t*)fSubEvent) + 
					    fSubEvent->eventSize);
	} else {
	  fSubEvent = (eventHeaderStruct*) (((UChar_t*)fEvent) + 
					    fEvent->eventHeadSize);
	}

	// check the magic word of the sub event
	if (fSubEvent->eventMagic != EVENT_MAGIC_NUMBER) {
	  Error("ReadHeader", "wrong magic number in sub event!\n"
		" run: %d  event: %d %d  LDC: %d  GDC: %d\n", 
		fSubEvent->eventRunNb, 
		fSubEvent->eventId[0], fSubEvent->eventId[1],
		fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	  fErrorCode = kErrMagic;
	  return kFALSE;
	}

	// continue if no data in the subevent
	if (fSubEvent->eventSize == fSubEvent->eventHeadSize) {
	  fPosition = fEnd = ((UChar_t*)fSubEvent) + fSubEvent->eventSize;
	  fCount = 0;
	  continue;
	}

	fEquipment = (equipmentHeaderStruct*)
	  (((UChar_t*)fSubEvent) + fSubEvent->eventHeadSize);

      } else {
	fEquipment = (equipmentHeaderStruct*) fEnd;
      }

      fCount = 0;
      fPosition = ((UChar_t*)fEquipment) + sizeof(equipmentHeaderStruct);
      if (fSubEvent->eventVersion <= 0x00030001) {
        fEnd = fPosition + fEquipment->equipmentSize;
      } else {
        fEnd = ((UChar_t*)fEquipment) + fEquipment->equipmentSize;
      }
    }

    // continue with the next sub event if no data left in the payload
    if (fPosition >= fEnd) continue;

    if (fRequireHeader) {
      // check that there are enough bytes left for the data header
      if (fPosition + sizeof(AliRawDataHeader) > fEnd) {
	Error("ReadHeader", "could not read data header data!");
	Warning("ReadHeader", "skipping %d bytes\n"
		" run: %d  event: %d %d  LDC: %d  GDC: %d\n", 
		fEnd - fPosition, fSubEvent->eventRunNb, 
		fSubEvent->eventId[0], fSubEvent->eventId[1],
		fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	fCount = 0;
	fPosition = fEnd;
	fErrorCode = kErrNoDataHeader;
	continue;
      }

      // "read" the data header
      fHeader = (AliRawDataHeader*) fPosition;
      if ((fPosition + fHeader->fSize) != fEnd) {
	if ((fHeader->fSize != 0xFFFFFFFF) &&
	    (fEquipment->equipmentId != 4352))
	  Warning("ReadHeader",
		  "raw data size found in the header is wrong (%d != %d)! Using the equipment size instead !",
		  fHeader->fSize, fEnd - fPosition);
	fHeader->fSize = fEnd - fPosition;
      }
      fPosition += sizeof(AliRawDataHeader);
    }

    if (fHeader && (fHeader->fSize != 0xFFFFFFFF)) {
      fCount = fHeader->fSize - sizeof(AliRawDataHeader);

      // check consistency of data size in the header and in the sub event
      if (fPosition + fCount > fEnd) {
	Error("ReadHeader", "size in data header exceeds event size!");
	Warning("ReadHeader", "skipping %d bytes\n"
		" run: %d  event: %d %d  LDC: %d  GDC: %d\n", 
		fEnd - fPosition, fSubEvent->eventRunNb, 
		fSubEvent->eventId[0], fSubEvent->eventId[1],
		fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	fCount = 0;
	fPosition = fEnd;
	fErrorCode = kErrSize;
	continue;
      }

    } else {
      fCount = fEnd - fPosition;
    }

  } while (!fEquipment || !IsSelected());

  return kTRUE;
#else
  return kFALSE;
#endif
}

Bool_t AliRawReaderDate::ReadNextData(UChar_t*& data)
{
// reads the next payload at the current position
// returns kFALSE if the data could not be read

  fErrorCode = 0;
  while (fCount == 0) {
    if (!ReadHeader()) return kFALSE;
  }
  data = fPosition;
  fPosition += fCount;  
  fCount = 0;
  return kTRUE;
}

Bool_t AliRawReaderDate::ReadNext(UChar_t* data, Int_t size)
{
// reads the next block of data at the current position
// returns kFALSE if the data could not be read

  fErrorCode = 0;
  if (fPosition + size > fEnd) {
    Error("ReadNext", "could not read data!");
    fErrorCode = kErrOutOfBounds;
    return kFALSE;
  }
  memcpy(data, fPosition, size);
  fPosition += size;
  fCount -= size;
  return kTRUE;
}


Bool_t AliRawReaderDate::Reset()
{
// reset the current position to the beginning of the event

#ifdef ALI_DATE
  fSubEvent = NULL;
  fEquipment = NULL;
#endif
  fCount = 0;
  fPosition = fEnd = NULL;
  return kTRUE;
}


Bool_t AliRawReaderDate::NextEvent()
{
// go to the next event in the date file

#ifdef ALI_DATE
  if (!fFile) {
    if (fEventNumber < 0 && fEvent) {
      fEventNumber++;
      return kTRUE;
    }
    else
      return kFALSE;
  }

  Reset();
  eventHeaderStruct header;
  UInt_t headerSize = sizeof(eventHeaderStruct);
  if (fEvent) delete[] fEvent;
  fEvent = &header;

  while (fread(&header, 1, headerSize, fFile) == headerSize) {
    if (!IsEventSelected()) {
      fseek(fFile, header.eventSize-headerSize, SEEK_CUR);
      continue;
    }
    UChar_t* buffer = new UChar_t[header.eventSize];
    fseek(fFile, -(long)headerSize, SEEK_CUR);
    if (fread(buffer, 1, header.eventSize, fFile) != header.eventSize) {
      Error("NextEvent", "could not read event from file");
      delete[] buffer;
      break;
    }
    fEvent = (eventHeaderStruct*) buffer;
    fEventNumber++;
    return kTRUE;
  };

  fEvent = NULL;
#endif

  return kFALSE;
}

Bool_t AliRawReaderDate::RewindEvents()
{
// go back to the beginning of the date file

  if (fFile)
    fseek(fFile, 0, SEEK_SET);

  fEventNumber = -1;
  return Reset();
}


Int_t AliRawReaderDate::CheckData() const
{
// check the consistency of the data

#ifdef ALI_DATE
  if (!fEvent) return 0;
  // check whether there are sub events
  if (fEvent->eventSize <= fEvent->eventHeadSize) return 0;

  eventHeaderStruct* subEvent = NULL;
  UChar_t* position = 0;
  UChar_t* end = 0;
  Int_t result = 0;

  while (kTRUE) {
    // get the first or the next sub event if at the end of a sub event
    if (!subEvent || (position >= end)) {

      // check for end of event data
      if (position >= ((UChar_t*)fEvent)+fEvent->eventSize) return result;
      if (!TEST_SYSTEM_ATTRIBUTE(fEvent->eventTypeAttribute, 
                                 ATTR_SUPER_EVENT)) {
        subEvent = fEvent;   // no super event
      } else if (subEvent) {
	subEvent = (eventHeaderStruct*) (((UChar_t*)subEvent) + 
					 subEvent->eventSize);
      } else {
	subEvent = (eventHeaderStruct*) (((UChar_t*)fEvent) + 
					 fEvent->eventHeadSize);
      }

      // check the magic word of the sub event
      if (subEvent->eventMagic != EVENT_MAGIC_NUMBER) {
	result |= kErrMagic;
	return result;
      }

      position = ((UChar_t*)subEvent) + subEvent->eventHeadSize + 
	sizeof(equipmentHeaderStruct);
      end = ((UChar_t*)subEvent) + subEvent->eventSize;
    }

    // continue with the next sub event if no data left in the payload
    if (position >= end) continue;

    if (fRequireHeader) {
    // check that there are enough bytes left for the data header
      if (position + sizeof(AliRawDataHeader) > end) {
	result |= kErrNoDataHeader;
	position = end;
	continue;
      }

      // check consistency of data size in the data header and in the sub event
      AliRawDataHeader* header = (AliRawDataHeader*) position;
      if ((position + header->fSize) != end) {
	if (header->fSize != 0xFFFFFFFF)
	  Warning("ReadHeader",
		  "raw data size found in the header is wrong (%d != %d)! Using the equipment size instead !",
		  header->fSize, end - position);
	header->fSize = end - position;
	result |= kErrSize;
      }
    }
    position = end;
  };

#endif
  return 0;
}

AliRawReader* AliRawReaderDate::CloneSingleEvent() const
{
  // Clones the current event and
  // creates raw-reader for the cloned event
  // Can be used in order to make asynchronious
  // access to the current raw data within
  // several threads (online event display/reco)

#ifdef ALI_DATE
  if (fEvent) {
    UInt_t evSize = fEvent->eventSize;
    if (evSize) {
      UChar_t *newEvent = new UChar_t[evSize];
      memcpy(newEvent,fEvent,evSize);
      return new AliRawReaderDate((void *)newEvent,kTRUE);
    }
  }
#else
  Fatal("AliRawReaderDate", "this class was compiled without DATE");
#endif
  return NULL;
}
Commit	Line	Data
	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	/* $Id$ */
	17
	18	///////////////////////////////////////////////////////////////////////////////
	19	///
	20	/// This is a class for reading raw data from a date file or event.
	21	///
	22	/// The AliRawReaderDate is constructed either with a pointer to a
	23	/// date event or with a file name and an event number.
	24	///
	25	///////////////////////////////////////////////////////////////////////////////
	26
	27	#include "AliRawReaderDate.h"
	28	#ifdef ALI_DATE
	29	#include "event.h"
	30	#endif
	31
	32	ClassImp(AliRawReaderDate)
	33
	34
	35	AliRawReaderDate::AliRawReaderDate(
	36	#ifdef ALI_DATE
	37	void* event, Bool_t owner
	38	#else
	39	void* /* event */, Bool_t owner
	40	#endif
	41	) :
	42	fFile(NULL),
	43	fEvent(NULL),
	44	fSubEvent(NULL),
	45	fEquipment(NULL),
	46	fPosition(NULL),
	47	fEnd(NULL),
	48	fOwner(owner)
	49	{
	50	// create an object to read digits from the given date event
	51
	52	#ifdef ALI_DATE
	53	fEvent = (eventHeaderStruct*) event;
	54	#else
	55	Fatal("AliRawReaderDate", "this class was compiled without DATE");
	56	#endif
	57	}
	58
	59	AliRawReaderDate::AliRawReaderDate(
	60	#ifdef ALI_DATE
	61	const char* fileName, Int_t eventNumber
	62	#else
	63	const char* /fileName/,
	64	Int_t /eventNumber/
	65	#endif
	66	) :
	67	fFile(NULL),
	68	fEvent(NULL),
	69	fSubEvent(NULL),
	70	fEquipment(NULL),
	71	fPosition(NULL),
	72	fEnd(NULL),
	73	fOwner(kTRUE)
	74	{
	75	// create an object to read digits from the given date event
	76
	77	#ifdef ALI_DATE
	78	fFile = fopen(fileName, "rb");
	79	if (!fFile) {
	80	Error("AliRawReaderDate", "could not open file %s", fileName);
	81	fIsValid = kFALSE;
	82	return;
	83	}
	84	if (eventNumber < 0) return;
	85
	86	eventHeaderStruct header;
	87	UInt_t headerSize = sizeof(eventHeaderStruct);
	88	while (fread(&header, 1, headerSize, fFile) == headerSize) {
	89	if (eventNumber == 0) {
	90	UChar_t* buffer = new UChar_t[header.eventSize];
	91	fseek(fFile, -(long)headerSize, SEEK_CUR);
	92	if (fread(buffer, 1, header.eventSize, fFile) != header.eventSize) break;
	93	fEvent = (eventHeaderStruct*) buffer;
	94	break;
	95	}
	96	fseek(fFile, header.eventSize-headerSize, SEEK_CUR);
	97	eventNumber--;
	98	}
	99
	100	#else
	101	Fatal("AliRawReaderDate", "this class was compiled without DATE");
	102	#endif
	103	}
	104
	105	AliRawReaderDate::AliRawReaderDate(const AliRawReaderDate& rawReader) :
	106	AliRawReader(rawReader),
	107	fFile(rawReader.fFile),
	108	fEvent(rawReader.fEvent),
	109	fSubEvent(rawReader.fSubEvent),
	110	fEquipment(rawReader.fEquipment),
	111	fPosition(rawReader.fPosition),
	112	fEnd(rawReader.fEnd),
	113	fOwner(rawReader.fOwner)
	114
	115	{
	116	// copy constructor
	117
	118	Fatal("AliRawReaderDate", "copy constructor not implemented");
	119	}
	120
	121	AliRawReaderDate& AliRawReaderDate::operator = (const AliRawReaderDate&
	122	/rawReader/)
	123	{
	124	// assignment operator
	125
	126	Fatal("operator =", "assignment operator not implemented");
	127	return *this;
	128	}
	129
	130	AliRawReaderDate::~AliRawReaderDate()
	131	{
	132	// destructor
	133
	134	#ifdef ALI_DATE
	135	if (fEvent && fOwner) delete[] fEvent;
	136	if (fFile) {
	137	fclose(fFile);
	138	}
	139	#endif
	140	}
	141
	142
	143	UInt_t AliRawReaderDate::GetType() const
	144	{
	145	// get the type from the event header
	146
	147	#ifdef ALI_DATE
	148	if (!fEvent) return 0;
	149	return fEvent->eventType;
	150	#else
	151	return 0;
	152	#endif
	153	}
	154
	155	UInt_t AliRawReaderDate::GetRunNumber() const
	156	{
	157	// get the run number from the event header
	158
	159	#ifdef ALI_DATE
	160	if (!fEvent) return 0;
	161	return fEvent->eventRunNb;
	162	#else
	163	return 0;
	164	#endif
	165	}
	166
	167	const UInt_t* AliRawReaderDate::GetEventId() const
	168	{
	169	// get the event id from the event header
	170
	171	#ifdef ALI_DATE
	172	if (!fEvent) return NULL;
	173	return fEvent->eventId;
	174	#else
	175	return NULL;
	176	#endif
	177	}
	178
	179	const UInt_t* AliRawReaderDate::GetTriggerPattern() const
	180	{
	181	// get the trigger pattern from the event header
	182
	183	#ifdef ALI_DATE
	184	if (!fEvent) return NULL;
	185	return fEvent->eventTriggerPattern;
	186	#else
	187	return NULL;
	188	#endif
	189	}
	190
	191	const UInt_t* AliRawReaderDate::GetDetectorPattern() const
	192	{
	193	// get the detector pattern from the event header
	194
	195	#ifdef ALI_DATE
	196	if (!fEvent) return NULL;
	197	return fEvent->eventDetectorPattern;
	198	#else
	199	return NULL;
	200	#endif
	201	}
	202
	203	const UInt_t* AliRawReaderDate::GetAttributes() const
	204	{
	205	// get the type attributes from the event header
	206
	207	#ifdef ALI_DATE
	208	if (!fEvent) return NULL;
	209	return fEvent->eventTypeAttribute;
	210	#else
	211	return NULL;
	212	#endif
	213	}
	214
	215	const UInt_t* AliRawReaderDate::GetSubEventAttributes() const
	216	{
	217	// get the type attributes from the sub event header
	218
	219	#ifdef ALI_DATE
	220	if (!fSubEvent) return NULL;
	221	return fSubEvent->eventTypeAttribute;
	222	#else
	223	return NULL;
	224	#endif
	225	}
	226
	227	UInt_t AliRawReaderDate::GetLDCId() const
	228	{
	229	// get the LDC Id from the event header
	230
	231	#ifdef ALI_DATE
	232	if (!fSubEvent) return 0;
	233	return fSubEvent->eventLdcId;
	234	#else
	235	return 0;
	236	#endif
	237	}
	238
	239	UInt_t AliRawReaderDate::GetGDCId() const
	240	{
	241	// get the GDC Id from the event header
	242
	243	#ifdef ALI_DATE
	244	if (!fEvent) return 0;
	245	return fEvent->eventGdcId;
	246	#else
	247	return 0;
	248	#endif
	249	}
	250
	251	UInt_t AliRawReaderDate::GetTimestamp() const
	252	{
	253	// get the timestamp from the event header
	254
	255	#ifdef ALI_DATE
	256	if (!fEvent) return 0;
	257	return fEvent->eventTimestamp;
	258	#else
	259	return 0;
	260	#endif
	261	}
	262
	263	Int_t AliRawReaderDate::GetEquipmentSize() const
	264	{
	265	// get the size of the equipment (including the header)
	266
	267	#ifdef ALI_DATE
	268	if (!fEquipment) return 0;
	269	if (fSubEvent->eventVersion <= 0x00030001) {
	270	return fEquipment->equipmentSize + sizeof(equipmentHeaderStruct);
	271	} else {
	272	return fEquipment->equipmentSize;
	273	}
	274	#else
	275	return 0;
	276	#endif
	277	}
	278
	279	Int_t AliRawReaderDate::GetEquipmentType() const
	280	{
	281	// get the type from the equipment header
	282
	283	#ifdef ALI_DATE
	284	if (!fEquipment) return -1;
	285	return fEquipment->equipmentType;
	286	#else
	287	return 0;
	288	#endif
	289	}
	290
	291	Int_t AliRawReaderDate::GetEquipmentId() const
	292	{
	293	// get the ID from the equipment header
	294
	295	#ifdef ALI_DATE
	296	if (!fEquipment) return -1;
	297	return fEquipment->equipmentId;
	298	#else
	299	return 0;
	300	#endif
	301	}
	302
	303	const UInt_t* AliRawReaderDate::GetEquipmentAttributes() const
	304	{
	305	// get the attributes from the equipment header
	306
	307	#ifdef ALI_DATE
	308	if (!fEquipment) return NULL;
	309	return fEquipment->equipmentTypeAttribute;
	310	#else
	311	return 0;
	312	#endif
	313	}
	314
	315	Int_t AliRawReaderDate::GetEquipmentElementSize() const
	316	{
	317	// get the basic element size from the equipment header
	318
	319	#ifdef ALI_DATE
	320	if (!fEquipment) return 0;
	321	return fEquipment->equipmentBasicElementSize;
	322	#else
	323	return 0;
	324	#endif
	325	}
	326
	327	Int_t AliRawReaderDate::GetEquipmentHeaderSize() const
	328	{
	329	// Get the equipment header size
	330	// 28 bytes by default
	331	#ifdef ALI_DATE
	332	return sizeof(equipmentHeaderStruct);
	333	#else
	334	return 0;
	335	#endif
	336	}
	337
	338	Bool_t AliRawReaderDate::ReadHeader()
	339	{
	340	// read a data header at the current position
	341	// returns kFALSE if the data header could not be read
	342
	343	fErrorCode = 0;
	344
	345	#ifdef ALI_DATE
	346	fHeader = NULL;
	347	if (!fEvent) return kFALSE;
	348	// check whether there are sub events
	349	if (fEvent->eventSize <= fEvent->eventHeadSize) return kFALSE;
	350
	351	do {
	352	// skip payload (if event was not selected)
	353	if (fCount > 0) fPosition += fCount;
	354
	355	// get the first or the next equipment if at the end of an equipment
	356	if (!fEquipment \|\| (fPosition >= fEnd)) {
	357	fEquipment = NULL;
	358
	359	// get the first or the next sub event if at the end of a sub event
	360	if (!fSubEvent \|\|
	361	(fPosition >= ((UChar_t*)fSubEvent) + fSubEvent->eventSize)) {
	362
	363	// check for end of event data
	364	if (fPosition >= ((UChar_t*)fEvent)+fEvent->eventSize) return kFALSE;
	365	if (!TEST_SYSTEM_ATTRIBUTE(fEvent->eventTypeAttribute,
	366	ATTR_SUPER_EVENT)) {
	367	fSubEvent = fEvent; // no super event
	368	} else if (fSubEvent) {
	369	fSubEvent = (eventHeaderStruct) (((UChar_t)fSubEvent) +
	370	fSubEvent->eventSize);
	371	} else {
	372	fSubEvent = (eventHeaderStruct) (((UChar_t)fEvent) +
	373	fEvent->eventHeadSize);
	374	}
	375
	376	// check the magic word of the sub event
	377	if (fSubEvent->eventMagic != EVENT_MAGIC_NUMBER) {
	378	Error("ReadHeader", "wrong magic number in sub event!\n"
	379	" run: %d event: %d %d LDC: %d GDC: %d\n",
	380	fSubEvent->eventRunNb,
	381	fSubEvent->eventId[0], fSubEvent->eventId[1],
	382	fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	383	fErrorCode = kErrMagic;
	384	return kFALSE;
	385	}
	386
	387	// continue if no data in the subevent
	388	if (fSubEvent->eventSize == fSubEvent->eventHeadSize) {
	389	fPosition = fEnd = ((UChar_t*)fSubEvent) + fSubEvent->eventSize;
	390	fCount = 0;
	391	continue;
	392	}
	393
	394	fEquipment = (equipmentHeaderStruct*)
	395	(((UChar_t*)fSubEvent) + fSubEvent->eventHeadSize);
	396
	397	} else {
	398	fEquipment = (equipmentHeaderStruct*) fEnd;
	399	}
	400
	401	fCount = 0;
	402	fPosition = ((UChar_t*)fEquipment) + sizeof(equipmentHeaderStruct);
	403	if (fSubEvent->eventVersion <= 0x00030001) {
	404	fEnd = fPosition + fEquipment->equipmentSize;
	405	} else {
	406	fEnd = ((UChar_t*)fEquipment) + fEquipment->equipmentSize;
	407	}
	408	}
	409
	410	// continue with the next sub event if no data left in the payload
	411	if (fPosition >= fEnd) continue;
	412
	413	if (fRequireHeader) {
	414	// check that there are enough bytes left for the data header
	415	if (fPosition + sizeof(AliRawDataHeader) > fEnd) {
	416	Error("ReadHeader", "could not read data header data!");
	417	Warning("ReadHeader", "skipping %d bytes\n"
	418	" run: %d event: %d %d LDC: %d GDC: %d\n",
	419	fEnd - fPosition, fSubEvent->eventRunNb,
	420	fSubEvent->eventId[0], fSubEvent->eventId[1],
	421	fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	422	fCount = 0;
	423	fPosition = fEnd;
	424	fErrorCode = kErrNoDataHeader;
	425	continue;
	426	}
	427
	428	// "read" the data header
	429	fHeader = (AliRawDataHeader*) fPosition;
	430	if ((fPosition + fHeader->fSize) != fEnd) {
	431	if ((fHeader->fSize != 0xFFFFFFFF) &&
	432	(fEquipment->equipmentId != 4352))
	433	Warning("ReadHeader",
	434	"raw data size found in the header is wrong (%d != %d)! Using the equipment size instead !",
	435	fHeader->fSize, fEnd - fPosition);
	436	fHeader->fSize = fEnd - fPosition;
	437	}
	438	fPosition += sizeof(AliRawDataHeader);
	439	}
	440
	441	if (fHeader && (fHeader->fSize != 0xFFFFFFFF)) {
	442	fCount = fHeader->fSize - sizeof(AliRawDataHeader);
	443
	444	// check consistency of data size in the header and in the sub event
	445	if (fPosition + fCount > fEnd) {
	446	Error("ReadHeader", "size in data header exceeds event size!");
	447	Warning("ReadHeader", "skipping %d bytes\n"
	448	" run: %d event: %d %d LDC: %d GDC: %d\n",
	449	fEnd - fPosition, fSubEvent->eventRunNb,
	450	fSubEvent->eventId[0], fSubEvent->eventId[1],
	451	fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	452	fCount = 0;
	453	fPosition = fEnd;
	454	fErrorCode = kErrSize;
	455	continue;
	456	}
	457
	458	} else {
	459	fCount = fEnd - fPosition;
	460	}
	461
	462	} while (!fEquipment \|\| !IsSelected());
	463
	464	return kTRUE;
	465	#else
	466	return kFALSE;
	467	#endif
	468	}
	469
	470	Bool_t AliRawReaderDate::ReadNextData(UChar_t*& data)
	471	{
	472	// reads the next payload at the current position
	473	// returns kFALSE if the data could not be read
	474
	475	fErrorCode = 0;
	476	while (fCount == 0) {
	477	if (!ReadHeader()) return kFALSE;
	478	}
	479	data = fPosition;
	480	fPosition += fCount;
	481	fCount = 0;
	482	return kTRUE;
	483	}
	484
	485	Bool_t AliRawReaderDate::ReadNext(UChar_t* data, Int_t size)
	486	{
	487	// reads the next block of data at the current position
	488	// returns kFALSE if the data could not be read
	489
	490	fErrorCode = 0;
	491	if (fPosition + size > fEnd) {
	492	Error("ReadNext", "could not read data!");
	493	fErrorCode = kErrOutOfBounds;
	494	return kFALSE;
	495	}
	496	memcpy(data, fPosition, size);
	497	fPosition += size;
	498	fCount -= size;
	499	return kTRUE;
	500	}
	501
	502
	503	Bool_t AliRawReaderDate::Reset()
	504	{
	505	// reset the current position to the beginning of the event
	506
	507	#ifdef ALI_DATE
	508	fSubEvent = NULL;
	509	fEquipment = NULL;
	510	#endif
	511	fCount = 0;
	512	fPosition = fEnd = NULL;
	513	return kTRUE;
	514	}
	515
	516
	517	Bool_t AliRawReaderDate::NextEvent()
	518	{
	519	// go to the next event in the date file
	520
	521	#ifdef ALI_DATE
	522	if (!fFile) {
	523	if (fEventNumber < 0 && fEvent) {
	524	fEventNumber++;
	525	return kTRUE;
	526	}
	527	else
	528	return kFALSE;
	529	}
	530
	531	Reset();
	532	eventHeaderStruct header;
	533	UInt_t headerSize = sizeof(eventHeaderStruct);
	534	if (fEvent) delete[] fEvent;
	535	fEvent = &header;
	536
	537	while (fread(&header, 1, headerSize, fFile) == headerSize) {
	538	if (!IsEventSelected()) {
	539	fseek(fFile, header.eventSize-headerSize, SEEK_CUR);
	540	continue;
	541	}
	542	UChar_t* buffer = new UChar_t[header.eventSize];
	543	fseek(fFile, -(long)headerSize, SEEK_CUR);
	544	if (fread(buffer, 1, header.eventSize, fFile) != header.eventSize) {
	545	Error("NextEvent", "could not read event from file");
	546	delete[] buffer;
	547	break;
	548	}
	549	fEvent = (eventHeaderStruct*) buffer;
	550	fEventNumber++;
	551	return kTRUE;
	552	};
	553
	554	fEvent = NULL;
	555	#endif
	556
	557	return kFALSE;
	558	}
	559
	560	Bool_t AliRawReaderDate::RewindEvents()
	561	{
	562	// go back to the beginning of the date file
	563
	564	if (fFile)
	565	fseek(fFile, 0, SEEK_SET);
	566
	567	fEventNumber = -1;
	568	return Reset();
	569	}
	570
	571
	572	Int_t AliRawReaderDate::CheckData() const
	573	{
	574	// check the consistency of the data
	575
	576	#ifdef ALI_DATE
	577	if (!fEvent) return 0;
	578	// check whether there are sub events
	579	if (fEvent->eventSize <= fEvent->eventHeadSize) return 0;
	580
	581	eventHeaderStruct* subEvent = NULL;
	582	UChar_t* position = 0;
	583	UChar_t* end = 0;
	584	Int_t result = 0;
	585
	586	while (kTRUE) {
	587	// get the first or the next sub event if at the end of a sub event
	588	if (!subEvent \|\| (position >= end)) {
	589
	590	// check for end of event data
	591	if (position >= ((UChar_t*)fEvent)+fEvent->eventSize) return result;
	592	if (!TEST_SYSTEM_ATTRIBUTE(fEvent->eventTypeAttribute,
	593	ATTR_SUPER_EVENT)) {
	594	subEvent = fEvent; // no super event
	595	} else if (subEvent) {
	596	subEvent = (eventHeaderStruct) (((UChar_t)subEvent) +
	597	subEvent->eventSize);
	598	} else {
	599	subEvent = (eventHeaderStruct) (((UChar_t)fEvent) +
	600	fEvent->eventHeadSize);
	601	}
	602
	603	// check the magic word of the sub event
	604	if (subEvent->eventMagic != EVENT_MAGIC_NUMBER) {
	605	result \|= kErrMagic;
	606	return result;
	607	}
	608
	609	position = ((UChar_t*)subEvent) + subEvent->eventHeadSize +
	610	sizeof(equipmentHeaderStruct);
	611	end = ((UChar_t*)subEvent) + subEvent->eventSize;
	612	}
	613
	614	// continue with the next sub event if no data left in the payload
	615	if (position >= end) continue;
	616
	617	if (fRequireHeader) {
	618	// check that there are enough bytes left for the data header
	619	if (position + sizeof(AliRawDataHeader) > end) {
	620	result \|= kErrNoDataHeader;
	621	position = end;
	622	continue;
	623	}
	624
	625	// check consistency of data size in the data header and in the sub event
	626	AliRawDataHeader* header = (AliRawDataHeader*) position;
	627	if ((position + header->fSize) != end) {
	628	if (header->fSize != 0xFFFFFFFF)
	629	Warning("ReadHeader",
	630	"raw data size found in the header is wrong (%d != %d)! Using the equipment size instead !",
	631	header->fSize, end - position);
	632	header->fSize = end - position;
	633	result \|= kErrSize;
	634	}
	635	}
	636	position = end;
	637	};
	638
	639	#endif
	640	return 0;
	641	}
	642
	643	AliRawReader* AliRawReaderDate::CloneSingleEvent() const
	644	{
	645	// Clones the current event and
	646	// creates raw-reader for the cloned event
	647	// Can be used in order to make asynchronious
	648	// access to the current raw data within
	649	// several threads (online event display/reco)
	650
	651	#ifdef ALI_DATE
	652	if (fEvent) {
	653	UInt_t evSize = fEvent->eventSize;
	654	if (evSize) {
	655	UChar_t *newEvent = new UChar_t[evSize];
	656	memcpy(newEvent,fEvent,evSize);
	657	return new AliRawReaderDate((void *)newEvent,kTRUE);
	658	}
	659	}
	660	#else
	661	Fatal("AliRawReaderDate", "this class was compiled without DATE");
	662	#endif
	663	return NULL;
	664	}