[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
#else
				   void* /* event */
#endif
				   ) :
  fFile(NULL),
  fEvent(NULL),
  fSubEvent(NULL),
  fEquipment(NULL),
  fPosition(NULL),
  fEnd(NULL)
{
// 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)
{
// 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);
    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, -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)

{
// 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 (fFile) {
    delete[] fEvent;
    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
}


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) {
	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) 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, -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) return kFALSE;

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