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"
40 ClassImp(AliRawReaderFile)
43 AliRawReaderFile::AliRawReaderFile(Int_t eventNumber) :
44 fEventIndex(eventNumber),
59 // create an object to read digits from the given event
60 // in the current directory
62 fDirectory = OpenDirectory();
63 if (!fDirectory) fIsValid = kFALSE;
64 if (!OpenNextFile()) fIsValid = kFALSE;
65 fHeader = new AliRawDataHeader;
68 fTriggerPattern[0] = fTriggerPattern[1] = 0;
71 AliRawReaderFile::AliRawReaderFile(const char* dirName, Int_t eventNumber) :
72 fEventIndex(eventNumber),
87 // create an object to read digits from the given directory
89 fDirectory = OpenDirectory();
90 if (!fDirectory) fIsValid = kFALSE;
91 if (fEventIndex >= 0 && (!OpenNextFile())) fIsValid = kFALSE;
92 fHeader = new AliRawDataHeader;
95 fTriggerPattern[0] = fTriggerPattern[1] = 0;
98 AliRawReaderFile::~AliRawReaderFile()
100 // close the input file
102 if (fDirectory) gSystem->FreeDirectory(fDirectory);
104 #if defined(__HP_aCC) || defined(__DECCXX)
105 if (fStream->rdbuf()->is_open()) fStream->close();
107 if (fStream->is_open()) fStream->close();
111 if (fHeader) delete fHeader;
112 if (fBuffer) delete[] fBuffer;
113 if (fDDLIndex) delete fDDLIndex; fDDLIndex=NULL;
116 void AliRawReaderFile::RequireHeader(Bool_t required)
118 // Reading of raw data in case of missing
119 // raw data header is not implemented for
122 Warning("AliRawReaderFile","Reading of raw data without raw data header!");
123 if (fHeader) delete fHeader;
127 if (!fHeader) fHeader = new AliRawDataHeader;
130 AliRawReader::RequireHeader(required);
133 TString AliRawReaderFile::GetDirName() const
135 // return the current directory name
137 TString dirName(fDirName);
138 if (fEventIndex >= 0) {
140 dirName += fEventIndex;
145 void* AliRawReaderFile::OpenDirectory()
147 // open and return the directory
149 TString dirName = GetDirName();
150 void* directory = gSystem->OpenDirectory(dirName);
152 Error("OpenDirectory", "could not open directory %s", dirName.Data());
157 Bool_t AliRawReaderFile::CreateFileIndex()
159 // scan the files of the directory and create index of all DDL files
160 // returns kFALSE if no DDL files available
161 Bool_t result=kFALSE;
163 if (fDDLIndex) return fDDLIndex->GetSize()>0;
164 if (!fDirectory) return kFALSE;
165 fDDLIndex=new TArrayC(0);
166 if (!fDDLIndex) return kFALSE;
168 while (entry = gSystem->GetDirEntry(fDirectory)) {
169 const char* filename=entry.Data();
170 if (!filename || entry.IsNull()) break;
171 if (entry.BeginsWith("run")) {
172 entry.ReplaceAll("run","");
173 fRunNb = entry.Atoi();
176 if (!entry.EndsWith(".ddl")) continue;
178 entry.Remove(0, entry.Last('_')+1);
179 entry.Remove(entry.Length()-4);
180 Int_t equipmentId = atoi(entry.Data());
182 fDetectorPattern |= (1 << AliDAQ::DetectorIDFromDdlID(equipmentId,ddlIndex));
183 if (fDDLIndex->GetSize()<=equipmentId) {
184 fDDLIndex->Set(equipmentId+1);
186 char* array=(char*)fDDLIndex->GetArray();
187 array[equipmentId]=1;
193 Bool_t AliRawReaderFile::OpenNextFile()
195 // open the next file
196 // returns kFALSE if the current file is the last one
198 if (!fDDLIndex && !CreateFileIndex()) return kFALSE;
199 if (fSelectMinEquipmentId>=0 && fSelectMinEquipmentId>fEquipmentId)
200 fDDLCurrent=fSelectMinEquipmentId-1;
203 #if defined(__HP_aCC) || defined(__DECCXX)
204 if (fStream->rdbuf()->is_open()) fStream->close();
206 if (fStream->is_open()) fStream->close();
214 if (!fDirectory) return kFALSE;
215 while (++fDDLCurrent<(fDDLIndex->GetSize()) &&
216 (fDDLCurrent<=fSelectMaxEquipmentId || fSelectMaxEquipmentId<0)) {
217 if (fDDLIndex->At(fDDLCurrent)==0) continue;
220 entry.Form("%s_%d.ddl", AliDAQ::DetectorNameFromDdlID(fDDLCurrent, dummy), fDDLCurrent);
221 char* fileName = gSystem->ConcatFileName(GetDirName(), entry);
222 if (!fileName) continue;
223 // read the timestamp
225 if (gSystem->GetPathInfo(fileName,buf) == 0) {
226 fTimestamp = buf.fMtime;
229 fStream = new fstream(fileName, ios::binary|ios::in);
231 fStream = new fstream(fileName, ios::in);
237 if (!fStream) return kFALSE;
238 fEquipmentId = fDDLCurrent;
239 #if defined(__HP_aCC) || defined(__DECCXX)
240 return (fStream->rdbuf()->is_open());
242 return (fStream->is_open());
247 Bool_t AliRawReaderFile::ReadHeader()
249 // read a data header at the current stream position
250 // returns kFALSE if the mini header could not be read
252 if (!fStream && !OpenNextFile()) return kFALSE;
254 if (fCount > 0) fStream->seekg(Int_t(fStream->tellg()) + fCount);
256 while (!fStream->read((char*) fHeader, sizeof(AliRawDataHeader))) {
257 if (!OpenNextFile()) return kFALSE;
262 if (!OpenNextFile()) return kFALSE;
264 if (fHeader && fHeader->fSize != 0xFFFFFFFF) {
265 fCount = fHeader->fSize - sizeof(AliRawDataHeader);
267 UInt_t currentPos = fStream->tellg();
268 fStream->seekg(0, ios::end);
269 fCount = UInt_t(fStream->tellg()) - currentPos;
270 fStream->seekg(currentPos);
272 fEquipmentSize = fCount;
273 if (fHeader) fEquipmentSize += sizeof(AliRawDataHeader);
274 } while (!IsSelected());
278 Bool_t AliRawReaderFile::ReadNextData(UChar_t*& data)
280 // reads the next payload at the current stream position
281 // returns kFALSE if the data could not be read
283 while (fCount == 0) {
284 if (!ReadHeader()) return kFALSE;
286 if (fBufferSize < fCount) {
287 if (fBuffer) delete[] fBuffer;
288 fBufferSize = Int_t(fCount*1.2);
289 fBuffer = new UChar_t[fBufferSize];
291 if (!fStream->read((char*) fBuffer, fCount)) {
292 Error("ReadNext", "could not read data!");
301 Bool_t AliRawReaderFile::ReadNext(UChar_t* data, Int_t size)
303 // reads the next block of data at the current stream position
304 // returns kFALSE if the data could not be read
306 if (!fStream->read((char*) data, size)) {
307 Error("ReadNext", "could not read data!");
315 Bool_t AliRawReaderFile::Reset()
317 // reset the current stream position to the first DDL file of the curevent
319 void* directory = OpenDirectory();
320 if (!directory) return kFALSE;
323 #if defined(__HP_aCC) || defined(__DECCXX)
324 if (fStream->rdbuf()->is_open()) fStream->close();
326 if (fStream->is_open()) fStream->close();
332 if (fDirectory) gSystem->FreeDirectory(fDirectory);
333 fDirectory = directory;
335 // Matthias 05.06.2008
336 // do not open the next file. That might collide with a subsequent
337 // SelectEquipment call as the 'file pointer' is already set.
338 // This is important for the indexing of the DDL files.
339 // ---------------------------------------------------------
340 // All ReadNext functions first require the fCount member to be
341 // non zero or call ReadHeader. That allows to postpone the call
342 // to OpenNextFile to the next invocation of ReadHeader.
343 // ReadHeader has been mofified according to that.
353 Bool_t AliRawReaderFile::NextEvent()
355 // go to the next event directory
357 if (fDDLIndex) delete fDDLIndex;
359 fDetectorPattern = 0;
360 if (fEventIndex < -1) return kFALSE;
363 TString dirName = fDirName + "/raw";
364 dirName += (fEventIndex + 1);
365 void* directory = gSystem->OpenDirectory(dirName);
366 if (!directory) return kFALSE;
367 gSystem->FreeDirectory(directory);
371 } while (!IsEventSelected());
373 // Read the header of the first payload
374 // in order to fill the 'fake' event header
375 if (ReadHeader() && fHeader) {
376 fId[0] = ((fHeader->GetEventID2() >> 20) & 0xf);
377 fId[1] = (fHeader->GetEventID1() & 0xfff) | ((fHeader->GetEventID2() & 0xfffff) << 12);
378 fTriggerPattern[0] = (fHeader->GetTriggerClasses() & 0xffffffff);
379 fTriggerPattern[1] = ((fHeader->GetTriggerClasses() >> 32) & 0x3ffff);
382 Warning("AliRawReaderFile","Can not read CDH header! The event header fields will be empty!");
391 Bool_t AliRawReaderFile::RewindEvents()
393 // reset the event counter
395 if (fEventIndex >= 0) fEventIndex = -1;