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 files.
22 /// The files of one event are expected to be in one directory. The name
23 /// of the directory is "raw" + the event number. Each file contains
24 /// the raw data (with data header) of one DDL. The convention for the
25 /// file names is "DET_#DDL.ddl". "DET" is the name of the detector and
26 /// "#DDL" is the unique equipment ID.
28 /// The constructor of AliRawReaderFile takes the event number or the
29 /// directory name as argument.
31 ///////////////////////////////////////////////////////////////////////////////
34 #include "AliRawReaderFile.h"
41 ClassImp(AliRawReaderFile)
44 AliRawReaderFile::AliRawReaderFile(Int_t eventNumber) :
45 fEventIndex(eventNumber),
60 // create an object to read digits from the given event
61 // in the current directory
63 fDirectory = OpenDirectory();
64 if (!fDirectory) fIsValid = kFALSE;
65 if (!OpenNextFile()) fIsValid = kFALSE;
66 fHeader = new AliRawDataHeader;
69 fTriggerPattern[0] = fTriggerPattern[1] = 0;
72 AliRawReaderFile::AliRawReaderFile(const char* dirName, Int_t eventNumber) :
73 fEventIndex(eventNumber),
88 // create an object to read digits from the given directory
90 fDirectory = OpenDirectory();
91 if (!fDirectory) fIsValid = kFALSE;
92 if (fEventIndex >= 0 && (!OpenNextFile())) fIsValid = kFALSE;
93 fHeader = new AliRawDataHeader;
96 fTriggerPattern[0] = fTriggerPattern[1] = 0;
99 AliRawReaderFile::~AliRawReaderFile()
101 // close the input file
103 if (fDirectory) gSystem->FreeDirectory(fDirectory);
105 #if defined(__HP_aCC) || defined(__DECCXX)
106 if (fStream->rdbuf()->is_open()) fStream->close();
108 if (fStream->is_open()) fStream->close();
112 if (fHeader) delete fHeader;
113 if (fBuffer) delete[] fBuffer;
114 if (fDDLIndex) delete fDDLIndex; fDDLIndex=NULL;
117 void AliRawReaderFile::RequireHeader(Bool_t required)
119 // Reading of raw data in case of missing
120 // raw data header is not implemented for
123 Warning("AliRawReaderFile","Reading of raw data without raw data header!");
124 if (fHeader) delete fHeader;
128 if (!fHeader) fHeader = new AliRawDataHeader;
131 AliRawReader::RequireHeader(required);
134 TString AliRawReaderFile::GetDirName() const
136 // return the current directory name
138 TString dirName(fDirName);
139 if (fEventIndex >= 0) {
141 dirName += fEventIndex;
146 void* AliRawReaderFile::OpenDirectory()
148 // open and return the directory
150 TString dirName = GetDirName();
151 void* directory = gSystem->OpenDirectory(dirName);
153 Error("OpenDirectory", "could not open directory %s", dirName.Data());
158 Bool_t AliRawReaderFile::CreateFileIndex()
160 // scan the files of the directory and create index of all DDL files
161 // returns kFALSE if no DDL files available
162 Bool_t result=kFALSE;
164 if (fDDLIndex) return fDDLIndex->GetSize()>0;
165 if (!fDirectory) return kFALSE;
166 fDDLIndex=new TArrayC(0);
167 if (!fDDLIndex) return kFALSE;
169 while ((entry = gSystem->GetDirEntry(fDirectory))) {
170 const char* filename=entry.Data();
171 if (!filename || entry.IsNull()) break;
172 if (entry.BeginsWith("run")) {
173 entry.ReplaceAll("run","");
174 fRunNb = entry.Atoi();
177 if (!entry.EndsWith(".ddl")) continue;
179 entry.Remove(0, entry.Last('_')+1);
180 entry.Remove(entry.Length()-4);
181 Int_t equipmentId = atoi(entry.Data());
183 fDetectorPattern |= (1 << AliDAQ::DetectorIDFromDdlID(equipmentId,ddlIndex));
184 if (fDDLIndex->GetSize()<=equipmentId) {
185 fDDLIndex->Set(equipmentId+1);
187 char* array=(char*)fDDLIndex->GetArray();
188 array[equipmentId]=1;
194 Bool_t AliRawReaderFile::OpenNextFile()
196 // open the next file
197 // returns kFALSE if the current file is the last one
199 if (!fDDLIndex && !CreateFileIndex()) return kFALSE;
200 if (fSelectMinEquipmentId>=0 && fSelectMinEquipmentId>fEquipmentId)
201 fDDLCurrent=fSelectMinEquipmentId-1;
204 #if defined(__HP_aCC) || defined(__DECCXX)
205 if (fStream->rdbuf()->is_open()) fStream->close();
207 if (fStream->is_open()) fStream->close();
215 if (!fDirectory) return kFALSE;
216 while (++fDDLCurrent<(fDDLIndex->GetSize()) &&
217 (fDDLCurrent<=fSelectMaxEquipmentId || fSelectMaxEquipmentId<0)) {
218 if (fDDLIndex->At(fDDLCurrent)==0) continue;
221 entry.Form("%s_%d.ddl", AliDAQ::DetectorNameFromDdlID(fDDLCurrent, dummy), fDDLCurrent);
222 char* fileName = gSystem->ConcatFileName(GetDirName(), entry);
223 if (!fileName) continue;
224 // read the timestamp
226 if (gSystem->GetPathInfo(fileName,buf) == 0) {
227 fTimestamp = buf.fMtime;
230 fStream = new fstream(fileName, ios::binary|ios::in);
232 fStream = new fstream(fileName, ios::in);
238 if (!fStream) return kFALSE;
239 fEquipmentId = fDDLCurrent;
240 #if defined(__HP_aCC) || defined(__DECCXX)
241 return (fStream->rdbuf()->is_open());
243 return (fStream->is_open());
248 Bool_t AliRawReaderFile::ReadHeader()
250 // read a data header at the current stream position
251 // returns kFALSE if the mini header could not be read
253 if (!fStream && !OpenNextFile()) return kFALSE;
255 if (fCount > 0) fStream->seekg(Int_t(fStream->tellg()) + fCount);
257 while (!fStream->read((char*) fHeader, sizeof(AliRawDataHeader))) {
258 if (!OpenNextFile()) return kFALSE;
263 if (!OpenNextFile()) return kFALSE;
265 if (fHeader && fHeader->fSize != 0xFFFFFFFF) {
266 fCount = fHeader->fSize - sizeof(AliRawDataHeader);
268 UInt_t currentPos = fStream->tellg();
269 fStream->seekg(0, ios::end);
270 fCount = UInt_t(fStream->tellg()) - currentPos;
271 fStream->seekg(currentPos);
273 fEquipmentSize = fCount;
274 if (fHeader) fEquipmentSize += sizeof(AliRawDataHeader);
275 } while (!IsSelected());
279 Bool_t AliRawReaderFile::ReadNextData(UChar_t*& data)
281 // reads the next payload at the current stream position
282 // returns kFALSE if the data could not be read
284 while (fCount == 0) {
285 if (!ReadHeader()) return kFALSE;
287 if (fBufferSize < fCount) {
288 if (fBuffer) delete[] fBuffer;
289 fBufferSize = Int_t(fCount*1.2);
290 fBuffer = new UChar_t[fBufferSize];
292 if (!fStream->read((char*) fBuffer, fCount)) {
293 Error("ReadNext", "could not read data!");
302 Bool_t AliRawReaderFile::ReadNext(UChar_t* data, Int_t size)
304 // reads the next block of data at the current stream position
305 // returns kFALSE if the data could not be read
307 if (!fStream->read((char*) data, size)) {
308 Error("ReadNext", "could not read data!");
316 Bool_t AliRawReaderFile::Reset()
318 // reset the current stream position to the first DDL file of the curevent
320 void* directory = OpenDirectory();
321 if (!directory) return kFALSE;
324 #if defined(__HP_aCC) || defined(__DECCXX)
325 if (fStream->rdbuf()->is_open()) fStream->close();
327 if (fStream->is_open()) fStream->close();
333 if (fDirectory) gSystem->FreeDirectory(fDirectory);
334 fDirectory = directory;
336 // Matthias 05.06.2008
337 // do not open the next file. That might collide with a subsequent
338 // SelectEquipment call as the 'file pointer' is already set.
339 // This is important for the indexing of the DDL files.
340 // ---------------------------------------------------------
341 // All ReadNext functions first require the fCount member to be
342 // non zero or call ReadHeader. That allows to postpone the call
343 // to OpenNextFile to the next invocation of ReadHeader.
344 // ReadHeader has been mofified according to that.
354 Bool_t AliRawReaderFile::NextEvent()
356 // go to the next event directory
358 if (fDDLIndex) delete fDDLIndex;
360 fDetectorPattern = 0;
361 if (fEventIndex < -1) return kFALSE;
364 TString dirName = fDirName + "/raw";
365 dirName += (fEventIndex + 1);
366 void* directory = gSystem->OpenDirectory(dirName);
367 if (!directory) return kFALSE;
368 gSystem->FreeDirectory(directory);
372 } while (!IsEventSelected());
374 // Read the header of the first payload
375 // in order to fill the 'fake' event header
376 if (ReadHeader() && fHeader) {
377 fId[0] = ((fHeader->GetEventID2() >> 20) & 0xf);
378 fId[1] = (fHeader->GetEventID1() & 0xfff) | ((fHeader->GetEventID2() & 0xfffff) << 12);
379 fTriggerPattern[0] = (fHeader->GetTriggerClasses() & 0xffffffff);
380 fTriggerPattern[1] = ((fHeader->GetTriggerClasses() >> 32) & 0x3ffff);
383 Warning("AliRawReaderFile","Can not read CDH header! The event header fields will be empty!");
392 Bool_t AliRawReaderFile::RewindEvents()
394 // reset the event counter
396 if (fEventIndex >= 0) fEventIndex = -1;