[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
				   ) :
  fRequireHeader(kTRUE),
  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
				   ) :
  fRequireHeader(kTRUE),
  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),
  fRequireHeader(rawReader.fRequireHeader),
  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
}

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

#ifdef ALI_DATE
  if (!fEquipment) return 0;
  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
}


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 <= 0x00030002) {
        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;
      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;
#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;

  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;
    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);
  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;

    // 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 (header->fSize != 0xFFFFFFFF) {
      if (position + header->fSize > end) {
	result |= kErrSize;
	position = end;
      } else {
	position += header->fSize;
      }
    } else {
      position = end;
    }
  };

#endif
  return 0;
}
Commit	Line	Data
16048fcf	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
bea6b2a4	16	/* $Id$ */
bea6b2a4	17
16048fcf	18	///////////////////////////////////////////////////////////////////////////////
bea6b2a4	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	///
16048fcf	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
c946ab02	41	) :
39f9963f	42	fRequireHeader(kTRUE),
dd9a70fe	43	fFile(NULL),
c946ab02	44	fEvent(NULL),
	45	fSubEvent(NULL),
	46	fEquipment(NULL),
c946ab02	47	fPosition(NULL),
c946ab02	48	fEnd(NULL)
16048fcf	49	{
	50	// create an object to read digits from the given date event
	51
	52	#ifdef ALI_DATE
	53	fEvent = (eventHeaderStruct*) event;
c946ab02	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	) :
39f9963f	67	fRequireHeader(kTRUE),
dd9a70fe	68	fFile(NULL),
c946ab02	69	fEvent(NULL),
	70	fSubEvent(NULL),
	71	fEquipment(NULL),
c946ab02	72	fPosition(NULL),
	73	fEnd(NULL)
	74	{
	75	// create an object to read digits from the given date event
	76
	77	#ifdef ALI_DATE
dd9a70fe	78	fFile = fopen(fileName, "rb");
dd9a70fe	79	if (!fFile) {
c946ab02	80	Error("AliRawReaderDate", "could not open file %s", fileName);
	81	return;
	82	}
dd9a70fe	83	if (eventNumber < 0) return;
dd9a70fe	84
c946ab02	85	eventHeaderStruct header;
c946ab02	86	UInt_t headerSize = sizeof(eventHeaderStruct);
dd9a70fe	87	while (fread(&header, 1, headerSize, fFile) == headerSize) {
c946ab02	88	if (eventNumber == 0) {
c946ab02	89	UChar_t* buffer = new UChar_t[header.eventSize];
dd9a70fe	90	fseek(fFile, -headerSize, SEEK_CUR);
dd9a70fe	91	if (fread(buffer, 1, header.eventSize, fFile) != header.eventSize) break;
c946ab02	92	fEvent = (eventHeaderStruct*) buffer;
c946ab02	93	break;
c946ab02	94	}
dd9a70fe	95	fseek(fFile, header.eventSize-headerSize, SEEK_CUR);
c946ab02	96	eventNumber--;
c946ab02	97	}
c946ab02	98
16048fcf	99	#else
	100	Fatal("AliRawReaderDate", "this class was compiled without DATE");
	101	#endif
	102	}
	103
	104	AliRawReaderDate::AliRawReaderDate(const AliRawReaderDate& rawReader) :
c946ab02	105	AliRawReader(rawReader),
39f9963f	106	fRequireHeader(rawReader.fRequireHeader),
dd9a70fe	107	fFile(rawReader.fFile),
c946ab02	108	fEvent(rawReader.fEvent),
	109	fSubEvent(rawReader.fSubEvent),
	110	fEquipment(rawReader.fEquipment),
c946ab02	111	fPosition(rawReader.fPosition),
	112	fEnd(rawReader.fEnd)
	113
16048fcf	114	{
	115	// copy constructor
	116
dd9a70fe	117	Fatal("AliRawReaderDate", "copy constructor not implemented");
16048fcf	118	}
	119
	120	AliRawReaderDate& AliRawReaderDate::operator = (const AliRawReaderDate&
dd9a70fe	121	/rawReader/)
16048fcf	122	{
	123	// assignment operator
	124
dd9a70fe	125	Fatal("operator =", "assignment operator not implemented");
16048fcf	126	return *this;
	127	}
	128
c946ab02	129	AliRawReaderDate::~AliRawReaderDate()
	130	{
	131	// destructor
	132
	133	#ifdef ALI_DATE
dd9a70fe	134	if (fFile) {
	135	delete[] fEvent;
	136	fclose(fFile);
	137	}
c946ab02	138	#endif
	139	}
	140
16048fcf	141
	142	UInt_t AliRawReaderDate::GetType() const
	143	{
	144	// get the type from the event header
	145
	146	#ifdef ALI_DATE
	147	if (!fEvent) return 0;
	148	return fEvent->eventType;
	149	#else
	150	return 0;
	151	#endif
	152	}
	153
	154	UInt_t AliRawReaderDate::GetRunNumber() const
	155	{
	156	// get the run number from the event header
	157
	158	#ifdef ALI_DATE
	159	if (!fEvent) return 0;
	160	return fEvent->eventRunNb;
	161	#else
	162	return 0;
	163	#endif
	164	}
	165
	166	const UInt_t* AliRawReaderDate::GetEventId() const
	167	{
	168	// get the event id from the event header
	169
	170	#ifdef ALI_DATE
	171	if (!fEvent) return NULL;
	172	return fEvent->eventId;
	173	#else
	174	return NULL;
	175	#endif
	176	}
	177
	178	const UInt_t* AliRawReaderDate::GetTriggerPattern() const
	179	{
	180	// get the trigger pattern from the event header
	181
	182	#ifdef ALI_DATE
	183	if (!fEvent) return NULL;
	184	return fEvent->eventTriggerPattern;
	185	#else
	186	return NULL;
	187	#endif
	188	}
	189
	190	const UInt_t* AliRawReaderDate::GetDetectorPattern() const
	191	{
	192	// get the detector pattern from the event header
	193
	194	#ifdef ALI_DATE
	195	if (!fEvent) return NULL;
	196	return fEvent->eventDetectorPattern;
	197	#else
	198	return NULL;
	199	#endif
	200	}
	201
	202	const UInt_t* AliRawReaderDate::GetAttributes() const
	203	{
	204	// get the type attributes from the event header
205
206	#ifdef ALI_DATE
207	if (!fEvent) return NULL;
208	return fEvent->eventTypeAttribute;
209	#else
210	return NULL;
211	#endif
212	}
213
c946ab02	214	UInt_t AliRawReaderDate::GetLDCId() const
	215	{
	216	// get the LDC Id from the event header
	217
	218	#ifdef ALI_DATE
	219	if (!fSubEvent) return 0;
	220	return fSubEvent->eventLdcId;
	221	#else
	222	return 0;
	223	#endif
	224	}
	225
16048fcf	226	UInt_t AliRawReaderDate::GetGDCId() const
	227	{
	228	// get the GDC Id from the event header
	229
	230	#ifdef ALI_DATE
	231	if (!fEvent) return 0;
	232	return fEvent->eventGdcId;
	233	#else
	234	return 0;
	235	#endif
	236	}
	237
	238
c946ab02	239	Int_t AliRawReaderDate::GetEquipmentSize() const
	240	{
	241	// get the size of the equipment
	242
	243	#ifdef ALI_DATE
	244	if (!fEquipment) return 0;
	245	return fEquipment->equipmentSize;
	246	#else
	247	return 0;
	248	#endif
	249	}
	250
	251	Int_t AliRawReaderDate::GetEquipmentType() const
	252	{
	253	// get the type from the equipment header
	254
	255	#ifdef ALI_DATE
	256	if (!fEquipment) return -1;
	257	return fEquipment->equipmentType;
	258	#else
	259	return 0;
	260	#endif
	261	}
	262
	263	Int_t AliRawReaderDate::GetEquipmentId() const
	264	{
	265	// get the ID from the equipment header
	266
	267	#ifdef ALI_DATE
	268	if (!fEquipment) return -1;
	269	return fEquipment->equipmentId;
	270	#else
	271	return 0;
	272	#endif
	273	}
	274
	275	const UInt_t* AliRawReaderDate::GetEquipmentAttributes() const
	276	{
	277	// get the attributes from the equipment header
	278
	279	#ifdef ALI_DATE
	280	if (!fEquipment) return NULL;
	281	return fEquipment->equipmentTypeAttribute;
	282	#else
	283	return 0;
	284	#endif
	285	}
	286
	287	Int_t AliRawReaderDate::GetEquipmentElementSize() const
	288	{
	289	// get the basic element size from the equipment header
	290
	291	#ifdef ALI_DATE
	292	if (!fEquipment) return 0;
	293	return fEquipment->equipmentBasicElementSize;
	294	#else
	295	return 0;
	296	#endif
	297	}
	298
	299
	300	Bool_t AliRawReaderDate::ReadHeader()
16048fcf	301	{
39f9963f	302	// read a data header at the current position
39f9963f	303	// returns kFALSE if the data header could not be read
16048fcf	304
b4857df7	305	fErrorCode = 0;
b4857df7	306
16048fcf	307	#ifdef ALI_DATE
921a8308	308	fHeader = NULL;
16048fcf	309	if (!fEvent) return kFALSE;
b4857df7	310	// check whether there are sub events
	311	if (fEvent->eventSize <= fEvent->eventHeadSize) return kFALSE;
	312
16048fcf	313	do {
b4857df7	314	// skip payload (if event was not selected)
	315	if (fCount > 0) fPosition += fCount;
	316
c946ab02	317	// get the first or the next equipment if at the end of an equipment
c946ab02	318	if (!fEquipment \|\| (fPosition >= fEnd)) {
921a8308	319	fEquipment = NULL;
c946ab02	320
	321	// get the first or the next sub event if at the end of a sub event
	322	if (!fSubEvent \|\|
	323	(fPosition >= ((UChar_t*)fSubEvent) + fSubEvent->eventSize)) {
	324
	325	// check for end of event data
	326	if (fPosition >= ((UChar_t*)fEvent)+fEvent->eventSize) return kFALSE;
5ba96ac1	327	if (!TEST_SYSTEM_ATTRIBUTE(fEvent->eventTypeAttribute,
	328	ATTR_SUPER_EVENT)) {
	329	fSubEvent = fEvent; // no super event
	330	} else if (fSubEvent) {
c946ab02	331	fSubEvent = (eventHeaderStruct) (((UChar_t)fSubEvent) +
	332	fSubEvent->eventSize);
	333	} else {
	334	fSubEvent = (eventHeaderStruct) (((UChar_t)fEvent) +
	335	fEvent->eventHeadSize);
	336	}
	337
	338	// check the magic word of the sub event
	339	if (fSubEvent->eventMagic != EVENT_MAGIC_NUMBER) {
	340	Error("ReadHeader", "wrong magic number in sub event!\n"
	341	" run: %d event: %d %d LDC: %d GDC: %d\n",
	342	fSubEvent->eventRunNb,
	343	fSubEvent->eventId[0], fSubEvent->eventId[1],
	344	fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	345	fErrorCode = kErrMagic;
	346	return kFALSE;
	347	}
	348
921a8308	349	// continue if no data in the subevent
	350	if (fSubEvent->eventSize == fSubEvent->eventHeadSize) {
	351	fPosition = fEnd = ((UChar_t*)fSubEvent) + fSubEvent->eventSize;
	352	fCount = 0;
	353	continue;
	354	}
	355
c946ab02	356	fEquipment = (equipmentHeaderStruct*)
c946ab02	357	(((UChar_t*)fSubEvent) + fSubEvent->eventHeadSize);
b4857df7	358
16048fcf	359	} else {
c946ab02	360	fEquipment = (equipmentHeaderStruct*) fEnd;
b4857df7	361	}
b4857df7	362
16048fcf	363	fCount = 0;
c946ab02	364	fPosition = ((UChar_t*)fEquipment) + sizeof(equipmentHeaderStruct);
921a8308	365	if (fSubEvent->eventVersion <= 0x00030002) {
	366	fEnd = fPosition + fEquipment->equipmentSize;
	367	} else {
	368	fEnd = ((UChar_t*)fEquipment) + fEquipment->equipmentSize;
	369	}
16048fcf	370	}
b4857df7	371
	372	// continue with the next sub event if no data left in the payload
	373	if (fPosition >= fEnd) continue;
	374
39f9963f	375	if (fRequireHeader) {
	376	// check that there are enough bytes left for the data header
	377	if (fPosition + sizeof(AliRawDataHeader) > fEnd) {
	378	Error("ReadHeader", "could not read data header data!");
c946ab02	379	Warning("ReadHeader", "skipping %d bytes\n"
	380	" run: %d event: %d %d LDC: %d GDC: %d\n",
	381	fEnd - fPosition, fSubEvent->eventRunNb,
	382	fSubEvent->eventId[0], fSubEvent->eventId[1],
	383	fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	384	fCount = 0;
	385	fPosition = fEnd;
39f9963f	386	fErrorCode = kErrNoDataHeader;
c946ab02	387	continue;
c946ab02	388	}
b4857df7	389
39f9963f	390	// "read" the data header
	391	fHeader = (AliRawDataHeader*) fPosition;
	392	fPosition += sizeof(AliRawDataHeader);
72dd1d4f	393	}
c946ab02	394
39f9963f	395	if (fHeader && (fHeader->fSize != 0xFFFFFFFF)) {
39f9963f	396	fCount = fHeader->fSize - sizeof(AliRawDataHeader);
c946ab02	397
39f9963f	398	// check consistency of data size in the header and in the sub event
c946ab02	399	if (fPosition + fCount > fEnd) {
39f9963f	400	Error("ReadHeader", "size in data header exceeds event size!");
c946ab02	401	Warning("ReadHeader", "skipping %d bytes\n"
	402	" run: %d event: %d %d LDC: %d GDC: %d\n",
	403	fEnd - fPosition, fSubEvent->eventRunNb,
	404	fSubEvent->eventId[0], fSubEvent->eventId[1],
	405	fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	406	fCount = 0;
	407	fPosition = fEnd;
	408	fErrorCode = kErrSize;
	409	continue;
	410	}
	411
	412	} else {
	413	fCount = fEnd - fPosition;
16048fcf	414	}
b4857df7	415
921a8308	416	} while (!fEquipment \|\| !IsSelected());
b4857df7	417
16048fcf	418	return kTRUE;
	419	#else
	420	return kFALSE;
	421	#endif
	422	}
	423
	424	Bool_t AliRawReaderDate::ReadNextData(UChar_t*& data)
	425	{
	426	// reads the next payload at the current position
	427	// returns kFALSE if the data could not be read
	428
b4857df7	429	fErrorCode = 0;
16048fcf	430	while (fCount == 0) {
c946ab02	431	if (!ReadHeader()) return kFALSE;
16048fcf	432	}
	433	data = fPosition;
	434	fPosition += fCount;
	435	fCount = 0;
	436	return kTRUE;
	437	}
	438
	439	Bool_t AliRawReaderDate::ReadNext(UChar_t* data, Int_t size)
	440	{
	441	// reads the next block of data at the current position
	442	// returns kFALSE if the data could not be read
	443
b4857df7	444	fErrorCode = 0;
16048fcf	445	if (fPosition + size > fEnd) {
16048fcf	446	Error("ReadNext", "could not read data!");
b4857df7	447	fErrorCode = kErrOutOfBounds;
16048fcf	448	return kFALSE;
	449	}
	450	memcpy(data, fPosition, size);
	451	fPosition += size;
	452	fCount -= size;
	453	return kTRUE;
	454	}
	455
	456
	457	Bool_t AliRawReaderDate::Reset()
	458	{
	459	// reset the current position to the beginning of the event
	460
	461	#ifdef ALI_DATE
	462	fSubEvent = NULL;
	463	#endif
	464	fCount = 0;
	465	fPosition = fEnd = NULL;
	466	return kTRUE;
	467	}
b4857df7	468
b4857df7	469
dd9a70fe	470	Bool_t AliRawReaderDate::NextEvent()
	471	{
	472	// go to the next event in the date file
	473
5bec8712	474	#ifdef ALI_DATE
dd9a70fe	475	if (!fFile) return kFALSE;
	476
	477	eventHeaderStruct header;
	478	UInt_t headerSize = sizeof(eventHeaderStruct);
	479	if (fEvent) delete[] fEvent;
	480	fEvent = &header;
	481
	482	while (fread(&header, 1, headerSize, fFile) == headerSize) {
	483	if (!IsEventSelected()) {
	484	fseek(fFile, header.eventSize-headerSize, SEEK_CUR);
	485	continue;
	486	}
	487	UChar_t* buffer = new UChar_t[header.eventSize];
	488	fseek(fFile, -headerSize, SEEK_CUR);
	489	if (fread(buffer, 1, header.eventSize, fFile) != header.eventSize) {
	490	Error("NextEvent", "could not read event from file");
	491	delete[] buffer;
	492	break;
	493	}
	494	fEvent = (eventHeaderStruct*) buffer;
	495	return kTRUE;
	496	};
	497
	498	fEvent = NULL;
bba5b21b	499	#endif
5bec8712	500
dd9a70fe	501	return kFALSE;
	502	}
	503
	504	Bool_t AliRawReaderDate::RewindEvents()
	505	{
	506	// go back to the beginning of the date file
	507
	508	if (!fFile) return kFALSE;
	509
	510	fseek(fFile, 0, SEEK_SET);
	511	return Reset();
	512	}
	513
	514
b4857df7	515	Int_t AliRawReaderDate::CheckData() const
	516	{
	517	// check the consistency of the data
	518
	519	#ifdef ALI_DATE
	520	if (!fEvent) return 0;
	521	// check whether there are sub events
	522	if (fEvent->eventSize <= fEvent->eventHeadSize) return 0;
	523
	524	eventHeaderStruct* subEvent = NULL;
	525	UChar_t* position = 0;
	526	UChar_t* end = 0;
be50fca2	527	Int_t result = 0;
b4857df7	528
	529	while (kTRUE) {
	530	// get the first or the next sub event if at the end of a sub event
	531	if (!subEvent \|\| (position >= end)) {
	532
	533	// check for end of event data
be50fca2	534	if (position >= ((UChar_t*)fEvent)+fEvent->eventSize) return result;
5ba96ac1	535	if (!TEST_SYSTEM_ATTRIBUTE(fEvent->eventTypeAttribute,
	536	ATTR_SUPER_EVENT)) {
	537	subEvent = fEvent; // no super event
	538	} else if (subEvent) {
b4857df7	539	subEvent = (eventHeaderStruct) (((UChar_t)subEvent) +
	540	subEvent->eventSize);
	541	} else {
	542	subEvent = (eventHeaderStruct) (((UChar_t)fEvent) +
	543	fEvent->eventHeadSize);
	544	}
	545
	546	// check the magic word of the sub event
be50fca2	547	if (subEvent->eventMagic != EVENT_MAGIC_NUMBER) {
	548	result \|= kErrMagic;
	549	return result;
	550	}
b4857df7	551
	552	position = ((UChar_t*)subEvent) + subEvent->eventHeadSize +
	553	sizeof(equipmentHeaderStruct);
	554	end = ((UChar_t*)subEvent) + subEvent->eventSize;
	555	}
	556
	557	// continue with the next sub event if no data left in the payload
	558	if (position >= end) continue;
	559
39f9963f	560	// check that there are enough bytes left for the data header
	561	if (position + sizeof(AliRawDataHeader) > end) {
	562	result \|= kErrNoDataHeader;
be50fca2	563	position = end;
	564	continue;
	565	}
b4857df7	566
39f9963f	567	// check consistency of data size in the data header and in the sub event
39f9963f	568	AliRawDataHeader* header = (AliRawDataHeader*) position;
086fa880	569	if (header->fSize != 0xFFFFFFFF) {
39f9963f	570	if (position + header->fSize > end) {
	571	result \|= kErrSize;
	572	position = end;
	573	} else {
	574	position += header->fSize;
	575	}
	576	} else {
be50fca2	577	position = end;
be50fca2	578	}
b4857df7	579	};
	580
	581	#endif
	582	return 0;
	583	}