1 // Author: Cvetan Cheshkov 10/10/2005
3 /**************************************************************************
4 * Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. *
6 * Author: The ALICE Off-line Project. *
7 * Contributors are mentioned in the code where appropriate. *
9 * Permission to use, copy, modify and distribute this software and its *
10 * documentation strictly for non-commercial purposes is hereby granted *
11 * without fee, provided that the above copyright notice appears in all *
12 * copies and that both the copyright notice and this permission notice *
13 * appear in the supporting documentation. The authors make no claims *
14 * about the suitability of this software for any purpose. It is *
15 * provided "as is" without express or implied warranty. *
16 **************************************************************************/
18 //////////////////////////////////////////////////////////////////////////
20 // AliRawEventHeaderBase //
21 // This a new versioning scheme for raw data root-ification and reading //
22 // For details look at offline weekly meeting 20/10/2005 //
24 //////////////////////////////////////////////////////////////////////////
29 #include <TDataMember.h>
30 #include <TMethodCall.h>
33 #include "AliRawEventHeaderBase.h"
36 ClassImp(AliRawEventHeaderBase)
38 //______________________________________________________________________________
39 AliRawEventHeaderBase::AliRawEventHeaderBase():
48 // Default constructor
51 //______________________________________________________________________________
52 void *AliRawEventHeaderBase::HeaderBegin()
54 // Returns the pointer to the first data member
55 // beyond the base class data members
57 TList *datalist = IsA()->GetListOfDataMembers();
59 TDataMember *member = (TDataMember *)next();
61 if(!strcmp(member->GetTypeName(),"TClass"))
62 member = (TDataMember *)next();
64 return (void *)((char *)this+member->GetOffset());
67 //______________________________________________________________________________
68 Int_t AliRawEventHeaderBase::HeaderSize() const
70 // Returns the size of the data members list
71 // beyond the base class data members
75 TList *datalist = IsA()->GetListOfDataMembers();
78 while ((member=(TDataMember *)next()) != 0x0) {
79 if (!strcmp(member->GetTypeName(),"TClass")) continue;
80 UInt_t unitsize = member->GetUnitSize();
81 UInt_t ndim = member->GetArrayDim();
85 for(UInt_t i=0;i<ndim;i++) size += member->GetMaxIndex(i)*unitsize;
91 //______________________________________________________________________________
92 void AliRawEventHeaderBase::Swap()
94 // Swap base header data.
95 // Update the fIsSwapped flag which
96 // is then use to copy in an appropriate way
97 // the rest of the header data from the raw data stream
101 fSize = net2host(fSize);
102 fMagic = net2host(fMagic);
103 fHeadSize = net2host(fHeadSize);
104 fVersion = net2host(fVersion);
108 //______________________________________________________________________________
109 const char *AliRawEventHeaderBase::GetTypeName()
111 // Get event type as a string.
112 // Will fail in case data header
113 // does not contain eventType field
114 Int_t eventType = Get("Type");
118 return "START_OF_RUN";
123 case kStartOfRunFiles:
124 return "START_OF_RUN_FILES";
127 return "END_OF_RUN_FILES";
130 return "START_OF_BURST";
133 return "END_OF_BURST";
136 return "PHYSICS_EVENT";
138 case kCalibrationEvent:
139 return "CALIBRATION_EVENT";
142 return "EVENT_FORMAT_ERROR";
145 return "START_OF_DATA";
148 return "END_OF_DATA";
150 case kSystemSoftwareTriggerEvent:
151 return "SYSTEM_SOFTWARE_TRIGGER_EVENT";
153 case kDetectorSoftwareTriggerEvent:
154 return "DETECTOR_SOFTWARE_TRIGGER_EVENT";
157 return "UNKNOWN EVENT TYPE NUMBER";
162 //______________________________________________________________________________
163 AliRawEventHeaderBase* AliRawEventHeaderBase::Create(char*& data)
165 // Static method to create AliRawEventHeaderVX object
166 // The actual header class version is taken from the
169 // First create AlirawEVentHeaderBase class object
170 AliRawEventHeaderBase header;
172 // Copy the first common part of the raw data header
173 memcpy(header.HeaderBaseBegin(), data, header.HeaderBaseSize());
175 // Swap header data if needed
176 if (header.IsSwapped())
179 // Is header valid...
180 if (!header.IsValid()) {
181 AliFatalClass("Invalid header format!");
182 // try recovery... how?
186 if (header.GetEventSize() < (UInt_t)header.HeaderBaseSize()) {
187 AliFatalClass("Invalid header base size!");
188 // try recovery... how?
192 // Now check the DATE version and create the corresponding header
194 UInt_t version = header.GetVersion();
195 UInt_t majorversion = (version>>16)&0x0000ffff;
196 UInt_t minorversion = version&0x0000ffff;
198 classname.Form("AliRawEventHeaderV%d_%d",majorversion,minorversion);
200 TClass *tcl = TClass::GetClass(classname.Data());
202 AliFatalClass(Form("Unknown header version (%s)!",classname.Data()));
206 // header.Dump(); tcl->Dump();
208 AliRawEventHeaderBase *hdr = (AliRawEventHeaderBase *)tcl->New();
210 AliFatalClass(Form("Can not create object of class %s",classname.Data()));
214 // Copy the base header data members and initialize other data members
215 memcpy(hdr->HeaderBaseBegin(),header.HeaderBaseBegin(), header.HeaderBaseSize());
216 memset(hdr->HeaderBegin(),0, hdr->HeaderSize());
217 hdr->fIsSwapped = header.fIsSwapped;
220 if (hdr->GetEventSize() < ((UInt_t)hdr->HeaderBaseSize() + (UInt_t)hdr->HeaderSize())) {
221 AliFatalClass(Form("Invalid header size (%d < %d +%d)!",
222 hdr->GetEventSize(),hdr->HeaderBaseSize(),hdr->HeaderSize()));
223 // try recovery... how?
227 // Check for the presence of header extension and its size
228 Int_t extsize = (Int_t)hdr->GetHeadSize() - (hdr->HeaderBaseSize() + hdr->HeaderSize());
230 AliFatalClass(Form("Invalid header size (%d < %d +%d)!",
231 hdr->GetHeadSize(),hdr->HeaderBaseSize(),hdr->HeaderSize()));
232 // try recovery... how?
237 hdr->SetExtendedDataSize(extsize);
238 char *extdata = new char[extsize];
239 memset(extdata,0,extsize);
240 hdr->SetExtendedData(extdata);
247 //______________________________________________________________________________
248 Int_t AliRawEventHeaderBase::ReadHeader(char*& data)
250 // Read header info from DATE data stream.
251 // Returns bytes read
253 Long_t start = (Long_t)data;
254 // Swap header data if needed
255 if (DataIsSwapped()) {
256 swab(data,HeaderBaseBegin(), HeaderBaseSize());
257 data += HeaderBaseSize();
258 swab(data, HeaderBegin(), HeaderSize());
259 data += HeaderSize();
260 if(GetExtendedDataSize()>0) {
261 swab(data, GetExtendedData(), GetExtendedDataSize());
262 data += GetExtendedDataSize();
266 memcpy(HeaderBaseBegin(), data, HeaderBaseSize());
267 data += HeaderBaseSize();
268 memcpy(HeaderBegin(), data, HeaderSize());
269 data += HeaderSize();
270 if(GetExtendedDataSize()>0) {
271 memcpy(GetExtendedData(), data, GetExtendedDataSize());
272 data += GetExtendedDataSize();
276 return (Int_t)((Long_t)data - start);
279 //______________________________________________________________________________
280 UInt_t AliRawEventHeaderBase::Get(const char *datamember) const
282 // The method to get a data member from the header object
283 // Except for the data members of the base class, all the
284 // other header data should be retrieved ONLY by this method
285 // The name of the data member should be supplied without "f"
289 strcat(buf,datamember);
291 TDataMember *member = IsA()->GetDataMember(buf);
293 AliFatal(Form("No data member %s is found! Check the raw data version!",buf));
297 if (member->GetArrayDim() != 0) {
298 AliFatal(Form("Member %s is an array! Use the GetP() method!",buf));
302 if (strcmp(member->GetTypeName(),"UInt_t") != 0) {
303 AliFatal(Form("Member %s is not of type UInt_t!",buf));
307 const void *pointer = (char *)this+member->GetOffset();
309 return *((UInt_t *)pointer);
312 //______________________________________________________________________________
313 const UInt_t* AliRawEventHeaderBase::GetP(const char *datamember) const
315 // The method to get a data member from the header object
316 // Except for the data members of the base class, all the
317 // other header data should be retrieved ONLY by this method
318 // The name of the data member should be supplied without "f"
322 strcat(buf,datamember);
324 TDataMember *member = IsA()->GetDataMember(buf);
326 AliFatal(Form("No data member %s is found! Check the raw data version!",buf));
330 // if (member->GetArrayDim() == 0) {
331 // AliFatal(Form("Member %s is not an array! Use the Get() method!",buf));
335 if (strcmp(member->GetTypeName(),"UInt_t") != 0) {
336 AliFatal(Form("Member %s is not of type UInt_t*!",buf));
340 const void *pointer = (char *)this+member->GetOffset();
342 return (const UInt_t*)pointer;