1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 /// This is a class for reading raw data from a root file.
22 /// The root file is expected to contain a tree of name "RAW" with
23 /// a branch of name "rawevent" which contains objects of type
26 /// The file name and the event number are arguments of the constructor
27 /// of AliRawReaderRoot.
29 ///////////////////////////////////////////////////////////////////////////////
33 #include "AliRawReaderRoot.h"
34 #include "AliRawEvent.h"
35 #include "AliRawEventHeaderBase.h"
36 #include "AliRawEquipment.h"
37 #include "AliRawEquipmentHeader.h"
38 #include "AliRawData.h"
41 ClassImp(AliRawReaderRoot)
44 AliRawReaderRoot::AliRawReaderRoot(const char* fileName, Int_t eventNumber) :
47 fEventIndex(eventNumber),
57 // create an object to read digits from the given input file for the
58 // event with the given number
60 TDirectory* dir = gDirectory;
61 fFile = TFile::Open(fileName);
63 if (!fFile || !fFile->IsOpen()) {
64 Error("AliRawReaderRoot", "could not open file %s", fileName);
67 TTree* tree = (TTree*) fFile->Get("RAW");
69 Error("AliRawReaderRoot", "no raw data tree found");
72 fBranch = tree->GetBranch("rawevent");
74 Error("AliRawReaderRoot", "no raw data branch found");
78 fEvent = new AliRawEvent;
79 fBranch->SetAddress(&fEvent);
80 if (fEventIndex >= 0) {
81 if (fBranch->GetEntry(fEventIndex) <= 0) {
82 Error("AliRawReaderRoot", "no event with number %d found", fEventIndex);
88 AliRawReaderRoot::AliRawReaderRoot(AliRawEvent* event) :
101 // create an object to read digits from the given raw event
105 AliRawReaderRoot::AliRawReaderRoot(const AliRawReaderRoot& rawReader) :
106 AliRawReader(rawReader),
109 fEventIndex(rawReader.fEventIndex),
111 fSubEventIndex(rawReader.fSubEventIndex),
113 fEquipmentIndex(rawReader.fEquipmentIndex),
121 if (rawReader.fFile) {
122 TDirectory* dir = gDirectory;
123 fFile = TFile::Open(rawReader.fFile->GetName());
125 if (!fFile || !fFile->IsOpen()) {
126 Error("AliRawReaderRoot", "could not open file %s",
127 rawReader.fFile->GetName());
130 TTree* tree = (TTree*) fFile->Get("RAW");
132 Error("AliRawReaderRoot", "no raw data tree found");
135 fBranch = tree->GetBranch("rawevent");
137 Error("AliRawReaderRoot", "no raw data branch found");
141 fEvent = new AliRawEvent;
142 fBranch->SetAddress(&fEvent);
143 if (fEventIndex >= 0) {
144 if (fBranch->GetEntry(fEventIndex) <= 0) {
145 Error("AliRawReaderRoot", "no event with number %d found",
151 fEvent = rawReader.fEvent;
154 if (fSubEventIndex > 0) {
155 fSubEvent = fEvent->GetSubEvent(fSubEventIndex-1);
156 fEquipment = fSubEvent->GetEquipment(fEquipmentIndex);
157 fRawData = fEquipment->GetRawData();
159 fHeader = (AliRawDataHeader*) ((UChar_t*) fRawData->GetBuffer() +
160 ((UChar_t*) rawReader.fHeader -
161 (UChar_t*) rawReader.fRawData->GetBuffer()));
162 fPosition = (UChar_t*) fRawData->GetBuffer() +
163 (rawReader.fPosition - (UChar_t*) rawReader.fRawData->GetBuffer());
164 fEnd = ((UChar_t*) fRawData->GetBuffer()) + fRawData->GetSize();
168 AliRawReaderRoot& AliRawReaderRoot::operator = (const AliRawReaderRoot&
171 // assignment operator
173 this->~AliRawReaderRoot();
174 new(this) AliRawReaderRoot(rawReader);
178 AliRawReaderRoot::~AliRawReaderRoot()
180 // delete objects and close root file
183 if (fEvent) delete fEvent;
189 const AliRawEventHeaderBase* AliRawReaderRoot::GetEventHeader() const
191 // Get the even header
192 // Return NULL in case of failure
193 if (!fEvent) return NULL;
194 return fEvent->GetHeader();
197 UInt_t AliRawReaderRoot::GetType() const
199 // get the type from the event header
201 if (!fEvent) return 0;
202 return fEvent->GetHeader()->Get("Type");
205 UInt_t AliRawReaderRoot::GetRunNumber() const
207 // get the run number from the event header
209 if (!fEvent) return 0;
210 return fEvent->GetHeader()->Get("RunNb");
213 const UInt_t* AliRawReaderRoot::GetEventId() const
215 // get the event id from the event header
217 if (!fEvent) return NULL;
218 return fEvent->GetHeader()->GetP("Id");
221 const UInt_t* AliRawReaderRoot::GetTriggerPattern() const
223 // get the trigger pattern from the event header
225 if (!fEvent) return NULL;
226 return fEvent->GetHeader()->GetP("TriggerPattern");
229 const UInt_t* AliRawReaderRoot::GetDetectorPattern() const
231 // get the detector pattern from the event header
233 if (!fEvent) return NULL;
234 return fEvent->GetHeader()->GetP("DetectorPattern");
237 const UInt_t* AliRawReaderRoot::GetAttributes() const
239 // get the type attributes from the event header
241 if (!fEvent) return NULL;
242 return fEvent->GetHeader()->GetP("TypeAttribute");
245 const UInt_t* AliRawReaderRoot::GetSubEventAttributes() const
247 // get the type attributes from the sub event header
249 if (!fSubEvent) return NULL;
250 return fSubEvent->GetHeader()->GetP("TypeAttribute");
253 UInt_t AliRawReaderRoot::GetLDCId() const
255 // get the LDC Id from the event header
257 if (!fEvent || !fSubEvent) return 0;
258 return fSubEvent->GetHeader()->Get("LdcId");
261 UInt_t AliRawReaderRoot::GetGDCId() const
263 // get the GDC Id from the event header
265 if (!fEvent) return 0;
266 return fEvent->GetHeader()->Get("GdcId");
270 Int_t AliRawReaderRoot::GetEquipmentSize() const
272 // get the size of the equipment
274 if (!fEvent || !fEquipment || !fEquipment->GetEquipmentHeader()) return 0;
275 return fEquipment->GetEquipmentHeader()->GetEquipmentSize();
278 Int_t AliRawReaderRoot::GetEquipmentType() const
280 // get the type from the equipment header
282 if (!fEvent || !fEquipment || !fEquipment->GetEquipmentHeader()) return -1;
283 return fEquipment->GetEquipmentHeader()->GetEquipmentType();
286 Int_t AliRawReaderRoot::GetEquipmentId() const
288 // get the ID from the equipment header
290 if (!fEvent || !fEquipment || !fEquipment->GetEquipmentHeader()) return -1;
291 return fEquipment->GetEquipmentHeader()->GetId();
294 const UInt_t* AliRawReaderRoot::GetEquipmentAttributes() const
296 // get the attributes from the equipment header
298 if (!fEvent || !fEquipment || !fEquipment->GetEquipmentHeader()) return NULL;
299 return fEquipment->GetEquipmentHeader()->GetTypeAttribute();
302 Int_t AliRawReaderRoot::GetEquipmentElementSize() const
304 // get the basic element size from the equipment header
306 if (!fEvent || !fEquipment || !fEquipment->GetEquipmentHeader()) return 0;
307 return fEquipment->GetEquipmentHeader()->GetBasicSizeType();
310 Int_t AliRawReaderRoot::GetEquipmentHeaderSize() const
312 // get the size of the equipment header (28 bytes by default)
314 if (!fEvent || !fEquipment || !fEquipment->GetEquipmentHeader()) return 0;
315 return fEquipment->GetEquipmentHeader()->HeaderSize();
319 Bool_t AliRawReaderRoot::ReadHeader()
321 // read a data header at the current position
322 // returns kFALSE if the data header could not be read
325 if (!fEvent) return kFALSE;
328 // skip payload (if event was not selected)
329 if (fCount > 0) fPosition += fCount;
331 // get the first or the next equipment if at the end of an equipment
332 if (!fEquipment || (fPosition >= fEnd)) {
334 // get the first or the next sub event if at the end of a sub event
335 if (!fSubEvent || (fEquipmentIndex >= fSubEvent->GetNEquipments())) {
337 // check for end of event data
338 if (fSubEventIndex >= fEvent->GetNSubEvents()) return kFALSE;
339 fSubEvent = fEvent->GetSubEvent(fSubEventIndex++);
341 // check the magic word of the sub event
342 if (!fSubEvent->GetHeader()->IsValid()) {
343 Error("ReadHeader", "wrong magic number in sub event!");
344 fSubEvent->GetHeader()->Dump();
345 fErrorCode = kErrMagic;
354 // get the next equipment and raw data
356 fEquipment = fSubEvent->GetEquipment(fEquipmentIndex++);
357 if (!fEquipment) continue;
358 fRawData = fEquipment->GetRawData();
363 fPosition = (UChar_t*) fRawData->GetBuffer();
364 fEnd = ((UChar_t*) fRawData->GetBuffer()) + fRawData->GetSize();
367 // continue with the next equipment if no data left in the payload
368 if (fPosition >= fEnd) continue;
370 if (fRequireHeader) {
371 // check that there are enough bytes left for the data header
372 if (fPosition + sizeof(AliRawDataHeader) > fEnd) {
373 Error("ReadHeader", "could not read data header!");
374 Warning("ReadHeader", "skipping %d bytes", fEnd - fPosition);
375 fEquipment->GetEquipmentHeader()->Dump();
378 fErrorCode = kErrNoDataHeader;
382 // "read" the data header
383 fHeader = (AliRawDataHeader*) fPosition;
384 if ((fPosition + fHeader->fSize) != fEnd) {
385 Warning("ReadHeader",
386 "raw data size found in the header is wrong (%d != %d)! Using the equipment size instead !",
387 fHeader->fSize, fEnd - fPosition);
388 fHeader->fSize = fEnd - fPosition;
390 fPosition += sizeof(AliRawDataHeader);
393 if (fHeader && (fHeader->fSize != 0xFFFFFFFF)) {
394 fCount = fHeader->fSize - sizeof(AliRawDataHeader);
396 // check consistency of data size in the header and in the sub event
397 if (fPosition + fCount > fEnd) {
398 Error("ReadHeader", "size in data header exceeds event size!");
399 Warning("ReadHeader", "skipping %d bytes", fEnd - fPosition);
400 fEquipment->GetEquipmentHeader()->Dump();
403 fErrorCode = kErrSize;
408 fCount = fEnd - fPosition;
411 } while (!IsSelected());
416 Bool_t AliRawReaderRoot::ReadNextData(UChar_t*& data)
418 // reads the next payload at the current position
419 // returns kFALSE if the data could not be read
422 while (fCount == 0) {
423 if (!ReadHeader()) return kFALSE;
431 Bool_t AliRawReaderRoot::ReadNext(UChar_t* data, Int_t size)
433 // reads the next block of data at the current position
434 // returns kFALSE if the data could not be read
437 if (fPosition + size > fEnd) {
438 Error("ReadNext", "could not read data!");
439 fErrorCode = kErrOutOfBounds;
442 memcpy(data, fPosition, size);
449 Bool_t AliRawReaderRoot::Reset()
451 // reset the current position to the beginning of the event
461 fPosition = fEnd = NULL;
466 Bool_t AliRawReaderRoot::NextEvent()
468 // go to the next event in the root file
470 if (!fFile) return kFALSE;
474 fEvent = new AliRawEvent;
475 fBranch->SetAddress(&fEvent);
476 if (fBranch->GetEntry(fEventIndex+1) <= 0)
479 } while (!IsEventSelected());
483 Bool_t AliRawReaderRoot::RewindEvents()
485 // go back to the beginning of the root file
487 if (!fFile) return kFALSE;
491 fEvent = new AliRawEvent;
492 fBranch->SetAddress(&fEvent);
497 Int_t AliRawReaderRoot::CheckData() const
499 // check the consistency of the data
501 if (!fEvent) return 0;
503 AliRawEvent* subEvent = NULL;
504 Int_t subEventIndex = 0;
505 AliRawEquipment* equipment = NULL;
506 Int_t equipmentIndex = 0;
507 UChar_t* position = 0;
512 // get the first or the next sub event if at the end of an equipment
513 if (!subEvent || (equipmentIndex >= subEvent->GetNEquipments())) {
515 // check for end of event data
516 if (subEventIndex >= fEvent->GetNSubEvents()) return result;
517 subEvent = fEvent->GetSubEvent(subEventIndex++);
519 // check the magic word of the sub event
520 if (!fSubEvent->GetHeader()->IsValid()) {
528 // get the next equipment and raw data
529 equipment = subEvent->GetEquipment(equipmentIndex++);
530 if (!equipment) continue;
531 AliRawData* rawData = equipment->GetRawData();
532 if (!rawData) continue;
533 position = (UChar_t*) rawData->GetBuffer();
534 end = ((UChar_t*) rawData->GetBuffer()) + rawData->GetSize();
536 // continue with the next sub event if no data left in the payload
537 if (position >= end) continue;
539 if (fRequireHeader) {
540 // check that there are enough bytes left for the data header
541 if (position + sizeof(AliRawDataHeader) > end) {
542 result |= kErrNoDataHeader;
546 // check consistency of data size in the header and in the equipment
547 AliRawDataHeader* header = (AliRawDataHeader*) position;
548 if ((position + header->fSize) != end) {
549 Warning("ReadHeader",
550 "raw data size found in the header is wrong (%d != %d)! Using the equipment size instead !",
551 header->fSize, end - position);
552 header->fSize = end - position;