[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 (without header)

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

    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 (header->fSize != 0xFFFFFFFF) {
	if (position + header->fSize > end) result |= kErrSize;
      }
    }
    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	) :
dd9a70fe	42	fFile(NULL),
c946ab02	43	fEvent(NULL),
	44	fSubEvent(NULL),
	45	fEquipment(NULL),
c946ab02	46	fPosition(NULL),
c946ab02	47	fEnd(NULL)
16048fcf	48	{
	49	// create an object to read digits from the given date event
	50
	51	#ifdef ALI_DATE
	52	fEvent = (eventHeaderStruct*) event;
c946ab02	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	) :
dd9a70fe	66	fFile(NULL),
c946ab02	67	fEvent(NULL),
	68	fSubEvent(NULL),
	69	fEquipment(NULL),
c946ab02	70	fPosition(NULL),
	71	fEnd(NULL)
	72	{
	73	// create an object to read digits from the given date event
	74
	75	#ifdef ALI_DATE
dd9a70fe	76	fFile = fopen(fileName, "rb");
dd9a70fe	77	if (!fFile) {
c946ab02	78	Error("AliRawReaderDate", "could not open file %s", fileName);
	79	return;
	80	}
dd9a70fe	81	if (eventNumber < 0) return;
dd9a70fe	82
c946ab02	83	eventHeaderStruct header;
c946ab02	84	UInt_t headerSize = sizeof(eventHeaderStruct);
dd9a70fe	85	while (fread(&header, 1, headerSize, fFile) == headerSize) {
c946ab02	86	if (eventNumber == 0) {
c946ab02	87	UChar_t* buffer = new UChar_t[header.eventSize];
dd9a70fe	88	fseek(fFile, -headerSize, SEEK_CUR);
dd9a70fe	89	if (fread(buffer, 1, header.eventSize, fFile) != header.eventSize) break;
c946ab02	90	fEvent = (eventHeaderStruct*) buffer;
c946ab02	91	break;
c946ab02	92	}
dd9a70fe	93	fseek(fFile, header.eventSize-headerSize, SEEK_CUR);
c946ab02	94	eventNumber--;
c946ab02	95	}
c946ab02	96
16048fcf	97	#else
	98	Fatal("AliRawReaderDate", "this class was compiled without DATE");
	99	#endif
	100	}
	101
	102	AliRawReaderDate::AliRawReaderDate(const AliRawReaderDate& rawReader) :
c946ab02	103	AliRawReader(rawReader),
dd9a70fe	104	fFile(rawReader.fFile),
c946ab02	105	fEvent(rawReader.fEvent),
	106	fSubEvent(rawReader.fSubEvent),
	107	fEquipment(rawReader.fEquipment),
c946ab02	108	fPosition(rawReader.fPosition),
	109	fEnd(rawReader.fEnd)
	110
16048fcf	111	{
	112	// copy constructor
	113
dd9a70fe	114	Fatal("AliRawReaderDate", "copy constructor not implemented");
16048fcf	115	}
	116
	117	AliRawReaderDate& AliRawReaderDate::operator = (const AliRawReaderDate&
dd9a70fe	118	/rawReader/)
16048fcf	119	{
	120	// assignment operator
	121
dd9a70fe	122	Fatal("operator =", "assignment operator not implemented");
16048fcf	123	return *this;
	124	}
	125
c946ab02	126	AliRawReaderDate::~AliRawReaderDate()
	127	{
	128	// destructor
	129
	130	#ifdef ALI_DATE
dd9a70fe	131	if (fFile) {
	132	delete[] fEvent;
	133	fclose(fFile);
	134	}
c946ab02	135	#endif
	136	}
	137
16048fcf	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
e94ad92c	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
c946ab02	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
16048fcf	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
c946ab02	248	Int_t AliRawReaderDate::GetEquipmentSize() const
c946ab02	249	{
87db01b0	250	// get the size of the equipment (without header)
c946ab02	251
	252	#ifdef ALI_DATE
	253	if (!fEquipment) return 0;
87db01b0	254	if (fSubEvent->eventVersion <= 0x00030001) {
	255	return fEquipment->equipmentSize;
	256	} else {
	257	return fEquipment->equipmentSize - sizeof(equipmentHeaderStruct);
	258	}
c946ab02	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
	313	Bool_t AliRawReaderDate::ReadHeader()
16048fcf	314	{
39f9963f	315	// read a data header at the current position
39f9963f	316	// returns kFALSE if the data header could not be read
16048fcf	317
b4857df7	318	fErrorCode = 0;
b4857df7	319
16048fcf	320	#ifdef ALI_DATE
921a8308	321	fHeader = NULL;
16048fcf	322	if (!fEvent) return kFALSE;
b4857df7	323	// check whether there are sub events
	324	if (fEvent->eventSize <= fEvent->eventHeadSize) return kFALSE;
	325
16048fcf	326	do {
b4857df7	327	// skip payload (if event was not selected)
	328	if (fCount > 0) fPosition += fCount;
	329
c946ab02	330	// get the first or the next equipment if at the end of an equipment
c946ab02	331	if (!fEquipment \|\| (fPosition >= fEnd)) {
921a8308	332	fEquipment = NULL;
c946ab02	333
	334	// get the first or the next sub event if at the end of a sub event
	335	if (!fSubEvent \|\|
	336	(fPosition >= ((UChar_t*)fSubEvent) + fSubEvent->eventSize)) {
	337
	338	// check for end of event data
	339	if (fPosition >= ((UChar_t*)fEvent)+fEvent->eventSize) return kFALSE;
5ba96ac1	340	if (!TEST_SYSTEM_ATTRIBUTE(fEvent->eventTypeAttribute,
	341	ATTR_SUPER_EVENT)) {
	342	fSubEvent = fEvent; // no super event
	343	} else if (fSubEvent) {
c946ab02	344	fSubEvent = (eventHeaderStruct) (((UChar_t)fSubEvent) +
	345	fSubEvent->eventSize);
	346	} else {
	347	fSubEvent = (eventHeaderStruct) (((UChar_t)fEvent) +
	348	fEvent->eventHeadSize);
	349	}
	350
	351	// check the magic word of the sub event
	352	if (fSubEvent->eventMagic != EVENT_MAGIC_NUMBER) {
	353	Error("ReadHeader", "wrong magic number in sub event!\n"
	354	" run: %d event: %d %d LDC: %d GDC: %d\n",
	355	fSubEvent->eventRunNb,
	356	fSubEvent->eventId[0], fSubEvent->eventId[1],
	357	fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	358	fErrorCode = kErrMagic;
	359	return kFALSE;
	360	}
	361
921a8308	362	// continue if no data in the subevent
	363	if (fSubEvent->eventSize == fSubEvent->eventHeadSize) {
	364	fPosition = fEnd = ((UChar_t*)fSubEvent) + fSubEvent->eventSize;
	365	fCount = 0;
	366	continue;
	367	}
	368
c946ab02	369	fEquipment = (equipmentHeaderStruct*)
c946ab02	370	(((UChar_t*)fSubEvent) + fSubEvent->eventHeadSize);
b4857df7	371
16048fcf	372	} else {
c946ab02	373	fEquipment = (equipmentHeaderStruct*) fEnd;
b4857df7	374	}
b4857df7	375
16048fcf	376	fCount = 0;
c946ab02	377	fPosition = ((UChar_t*)fEquipment) + sizeof(equipmentHeaderStruct);
87db01b0	378	if (fSubEvent->eventVersion <= 0x00030001) {
921a8308	379	fEnd = fPosition + fEquipment->equipmentSize;
	380	} else {
	381	fEnd = ((UChar_t*)fEquipment) + fEquipment->equipmentSize;
	382	}
16048fcf	383	}
b4857df7	384
	385	// continue with the next sub event if no data left in the payload
	386	if (fPosition >= fEnd) continue;
	387
39f9963f	388	if (fRequireHeader) {
	389	// check that there are enough bytes left for the data header
	390	if (fPosition + sizeof(AliRawDataHeader) > fEnd) {
	391	Error("ReadHeader", "could not read data header data!");
c946ab02	392	Warning("ReadHeader", "skipping %d bytes\n"
	393	" run: %d event: %d %d LDC: %d GDC: %d\n",
	394	fEnd - fPosition, fSubEvent->eventRunNb,
	395	fSubEvent->eventId[0], fSubEvent->eventId[1],
	396	fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	397	fCount = 0;
	398	fPosition = fEnd;
39f9963f	399	fErrorCode = kErrNoDataHeader;
c946ab02	400	continue;
c946ab02	401	}
b4857df7	402
39f9963f	403	// "read" the data header
	404	fHeader = (AliRawDataHeader*) fPosition;
	405	fPosition += sizeof(AliRawDataHeader);
72dd1d4f	406	}
c946ab02	407
39f9963f	408	if (fHeader && (fHeader->fSize != 0xFFFFFFFF)) {
39f9963f	409	fCount = fHeader->fSize - sizeof(AliRawDataHeader);
c946ab02	410
39f9963f	411	// check consistency of data size in the header and in the sub event
c946ab02	412	if (fPosition + fCount > fEnd) {
39f9963f	413	Error("ReadHeader", "size in data header exceeds event size!");
c946ab02	414	Warning("ReadHeader", "skipping %d bytes\n"
	415	" run: %d event: %d %d LDC: %d GDC: %d\n",
	416	fEnd - fPosition, fSubEvent->eventRunNb,
	417	fSubEvent->eventId[0], fSubEvent->eventId[1],
	418	fSubEvent->eventLdcId, fSubEvent->eventGdcId);
	419	fCount = 0;
	420	fPosition = fEnd;
	421	fErrorCode = kErrSize;
	422	continue;
	423	}
	424
	425	} else {
	426	fCount = fEnd - fPosition;
16048fcf	427	}
b4857df7	428
921a8308	429	} while (!fEquipment \|\| !IsSelected());
b4857df7	430
16048fcf	431	return kTRUE;
	432	#else
	433	return kFALSE;
	434	#endif
	435	}
	436
	437	Bool_t AliRawReaderDate::ReadNextData(UChar_t*& data)
	438	{
	439	// reads the next payload at the current position
	440	// returns kFALSE if the data could not be read
	441
b4857df7	442	fErrorCode = 0;
16048fcf	443	while (fCount == 0) {
c946ab02	444	if (!ReadHeader()) return kFALSE;
16048fcf	445	}
	446	data = fPosition;
	447	fPosition += fCount;
	448	fCount = 0;
	449	return kTRUE;
	450	}
	451
	452	Bool_t AliRawReaderDate::ReadNext(UChar_t* data, Int_t size)
	453	{
	454	// reads the next block of data at the current position
	455	// returns kFALSE if the data could not be read
	456
b4857df7	457	fErrorCode = 0;
16048fcf	458	if (fPosition + size > fEnd) {
16048fcf	459	Error("ReadNext", "could not read data!");
b4857df7	460	fErrorCode = kErrOutOfBounds;
16048fcf	461	return kFALSE;
	462	}
	463	memcpy(data, fPosition, size);
	464	fPosition += size;
	465	fCount -= size;
	466	return kTRUE;
	467	}
	468
	469
	470	Bool_t AliRawReaderDate::Reset()
	471	{
	472	// reset the current position to the beginning of the event
	473
	474	#ifdef ALI_DATE
	475	fSubEvent = NULL;
d7aa1c7c	476	fEquipment = NULL;
16048fcf	477	#endif
	478	fCount = 0;
	479	fPosition = fEnd = NULL;
	480	return kTRUE;
	481	}
b4857df7	482
b4857df7	483
dd9a70fe	484	Bool_t AliRawReaderDate::NextEvent()
	485	{
	486	// go to the next event in the date file
	487
5bec8712	488	#ifdef ALI_DATE
dd9a70fe	489	if (!fFile) return kFALSE;
dd9a70fe	490
d7aa1c7c	491	Reset();
dd9a70fe	492	eventHeaderStruct header;
	493	UInt_t headerSize = sizeof(eventHeaderStruct);
	494	if (fEvent) delete[] fEvent;
	495	fEvent = &header;
	496
	497	while (fread(&header, 1, headerSize, fFile) == headerSize) {
	498	if (!IsEventSelected()) {
	499	fseek(fFile, header.eventSize-headerSize, SEEK_CUR);
	500	continue;
	501	}
	502	UChar_t* buffer = new UChar_t[header.eventSize];
	503	fseek(fFile, -headerSize, SEEK_CUR);
	504	if (fread(buffer, 1, header.eventSize, fFile) != header.eventSize) {
	505	Error("NextEvent", "could not read event from file");
	506	delete[] buffer;
	507	break;
	508	}
	509	fEvent = (eventHeaderStruct*) buffer;
	510	return kTRUE;
	511	};
	512
	513	fEvent = NULL;
bba5b21b	514	#endif
5bec8712	515
dd9a70fe	516	return kFALSE;
	517	}
	518
	519	Bool_t AliRawReaderDate::RewindEvents()
	520	{
	521	// go back to the beginning of the date file
	522
	523	if (!fFile) return kFALSE;
	524
	525	fseek(fFile, 0, SEEK_SET);
	526	return Reset();
	527	}
	528
	529
b4857df7	530	Int_t AliRawReaderDate::CheckData() const
	531	{
	532	// check the consistency of the data
	533
	534	#ifdef ALI_DATE
	535	if (!fEvent) return 0;
	536	// check whether there are sub events
	537	if (fEvent->eventSize <= fEvent->eventHeadSize) return 0;
	538
	539	eventHeaderStruct* subEvent = NULL;
	540	UChar_t* position = 0;
	541	UChar_t* end = 0;
be50fca2	542	Int_t result = 0;
b4857df7	543
	544	while (kTRUE) {
	545	// get the first or the next sub event if at the end of a sub event
	546	if (!subEvent \|\| (position >= end)) {
	547
	548	// check for end of event data
be50fca2	549	if (position >= ((UChar_t*)fEvent)+fEvent->eventSize) return result;
5ba96ac1	550	if (!TEST_SYSTEM_ATTRIBUTE(fEvent->eventTypeAttribute,
	551	ATTR_SUPER_EVENT)) {
	552	subEvent = fEvent; // no super event
	553	} else if (subEvent) {
b4857df7	554	subEvent = (eventHeaderStruct) (((UChar_t)subEvent) +
	555	subEvent->eventSize);
	556	} else {
	557	subEvent = (eventHeaderStruct) (((UChar_t)fEvent) +
	558	fEvent->eventHeadSize);
	559	}
	560
	561	// check the magic word of the sub event
be50fca2	562	if (subEvent->eventMagic != EVENT_MAGIC_NUMBER) {
	563	result \|= kErrMagic;
	564	return result;
	565	}
b4857df7	566
	567	position = ((UChar_t*)subEvent) + subEvent->eventHeadSize +
	568	sizeof(equipmentHeaderStruct);
	569	end = ((UChar_t*)subEvent) + subEvent->eventSize;
	570	}
	571
	572	// continue with the next sub event if no data left in the payload
	573	if (position >= end) continue;
	574
18882b3b	575	if (fRequireHeader) {
39f9963f	576	// check that there are enough bytes left for the data header
18882b3b	577	if (position + sizeof(AliRawDataHeader) > end) {
18882b3b	578	result \|= kErrNoDataHeader;
39f9963f	579	position = end;
18882b3b	580	continue;
	581	}
	582
	583	// check consistency of data size in the data header and in the sub event
	584	AliRawDataHeader* header = (AliRawDataHeader*) position;
	585	if (header->fSize != 0xFFFFFFFF) {
	586	if (position + header->fSize > end) result \|= kErrSize;
39f9963f	587	}
be50fca2	588	}
18882b3b	589	position = end;
b4857df7	590	};
	591
	592	#endif
	593	return 0;
	594	}