1 /**************************************************************************
2 * Copyright(c) 1998-2003, 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 // Author: Cvetan Cheshkov 10/10/2005
20 //////////////////////////////////////////////////////////////////////////
22 // AliRawEventHeaderBase //
23 // This a new versioning scheme for raw data root-ification and reading //
24 // For details look at offline weekly meeting 20/10/2005 //
26 //////////////////////////////////////////////////////////////////////////
32 #include <TDataMember.h>
34 #include <TMethodCall.h>
37 #include "AliRawEventHeaderBase.h"
40 ClassImp(AliRawEventHeaderBase)
42 //______________________________________________________________________________
43 AliRawEventHeaderBase::AliRawEventHeaderBase():
52 // Default constructor
55 //______________________________________________________________________________
56 void *AliRawEventHeaderBase::HeaderBegin()
58 // Returns the pointer to the first data member
59 // beyond the base class data members
61 TList *datalist = IsA()->GetListOfDataMembers();
63 TDataMember *member = (TDataMember *)next();
65 if(!strcmp(member->GetTypeName(),"TClass"))
66 member = (TDataMember *)next();
68 return (void *)((char *)this+member->GetOffset());
71 //______________________________________________________________________________
72 Int_t AliRawEventHeaderBase::HeaderSize() const
74 // Returns the size of the data members list
75 // beyond the base class data members
79 TList *datalist = IsA()->GetListOfDataMembers();
82 while ((member=(TDataMember *)next()) != 0x0) {
83 if (!strcmp(member->GetTypeName(),"TClass")) continue;
84 UInt_t unitsize = member->GetUnitSize();
85 UInt_t ndim = member->GetArrayDim();
89 for(UInt_t i=0;i<ndim;i++) size += member->GetMaxIndex(i)*unitsize;
95 //______________________________________________________________________________
96 void AliRawEventHeaderBase::Swap()
98 // Swap base header data.
99 // Update the fIsSwapped flag which
100 // is then use to copy in an appropriate way
101 // the rest of the header data from the raw data stream
105 fSize = net2host(fSize);
106 fMagic = net2host(fMagic);
107 fHeadSize = net2host(fHeadSize);
108 fVersion = net2host(fVersion);
112 //______________________________________________________________________________
113 const char *AliRawEventHeaderBase::GetTypeName()
115 // Get event type as a string.
116 // Will fail in case data header
117 // does not contain eventType field
118 Int_t eventType = Get("Type");
122 return "START_OF_RUN";
127 case kStartOfRunFiles:
128 return "START_OF_RUN_FILES";
131 return "END_OF_RUN_FILES";
134 return "START_OF_BURST";
137 return "END_OF_BURST";
140 return "PHYSICS_EVENT";
142 case kCalibrationEvent:
143 return "CALIBRATION_EVENT";
146 return "EVENT_FORMAT_ERROR";
149 return "START_OF_DATA";
152 return "END_OF_DATA";
154 case kSystemSoftwareTriggerEvent:
155 return "SYSTEM_SOFTWARE_TRIGGER_EVENT";
157 case kDetectorSoftwareTriggerEvent:
158 return "DETECTOR_SOFTWARE_TRIGGER_EVENT";
161 return "UNKNOWN EVENT TYPE NUMBER";
166 //______________________________________________________________________________
167 AliRawEventHeaderBase* AliRawEventHeaderBase::Create(char*& data)
169 // Static method to create AliRawEventHeaderVX object
170 // The actual header class version is taken from the
173 // First create AlirawEVentHeaderBase class object
174 AliRawEventHeaderBase header;
176 // Copy the first common part of the raw data header
177 memcpy(header.HeaderBaseBegin(), data, header.HeaderBaseSize());
179 // Swap header data if needed
180 if (header.IsSwapped())
183 // Is header valid...
184 if (!header.IsValid()) {
185 AliFatalClass("Invalid header format!");
186 // try recovery... how?
190 if (header.GetEventSize() < (UInt_t)header.HeaderBaseSize()) {
191 AliFatalClass("Invalid header base size!");
192 // try recovery... how?
196 // Now check the DATE version and create the corresponding header
198 UInt_t version = header.GetVersion();
199 UInt_t majorversion = (version>>16)&0x0000ffff;
200 UInt_t minorversion = version&0x0000ffff;
202 classname.Form("AliRawEventHeaderV%d_%d",majorversion,minorversion);
204 TClass *tcl = TClass::GetClass(classname.Data());
206 AliFatalClass(Form("Unknown header version (%s)!",classname.Data()));
210 // header.Dump(); tcl->Dump();
212 AliRawEventHeaderBase *hdr = (AliRawEventHeaderBase *)tcl->New();
214 AliFatalClass(Form("Can not create object of class %s",classname.Data()));
218 // Copy the base header data members and initialize other data members
219 memcpy(hdr->HeaderBaseBegin(),header.HeaderBaseBegin(), header.HeaderBaseSize());
220 memset(hdr->HeaderBegin(),0, hdr->HeaderSize());
221 hdr->fIsSwapped = header.fIsSwapped;
224 if (hdr->GetEventSize() < ((UInt_t)hdr->HeaderBaseSize() + (UInt_t)hdr->HeaderSize())) {
225 AliFatalClass(Form("Invalid header size (%d < %d +%d)!",
226 hdr->GetEventSize(),hdr->HeaderBaseSize(),hdr->HeaderSize()));
227 // try recovery... how?
231 // Check for the presence of header extension and its size
232 Int_t extsize = (Int_t)hdr->GetHeadSize() - (hdr->HeaderBaseSize() + hdr->HeaderSize());
234 AliFatalClass(Form("Invalid header size (%d < %d +%d)!",
235 hdr->GetHeadSize(),hdr->HeaderBaseSize(),hdr->HeaderSize()));
236 // try recovery... how?
241 hdr->SetExtendedDataSize(extsize);
242 char *extdata = new char[extsize];
243 memset(extdata,0,extsize);
244 hdr->SetExtendedData(extdata);
251 //______________________________________________________________________________
252 Int_t AliRawEventHeaderBase::ReadHeader(char*& data)
254 // Read header info from DATE data stream.
255 // Returns bytes read
257 Long_t start = (Long_t)data;
258 // Swap header data if needed
259 if (DataIsSwapped()) {
260 swab(data,HeaderBaseBegin(), HeaderBaseSize());
261 data += HeaderBaseSize();
262 swab(data, HeaderBegin(), HeaderSize());
263 data += HeaderSize();
264 if(GetExtendedDataSize()>0) {
265 swab(data, GetExtendedData(), GetExtendedDataSize());
266 data += GetExtendedDataSize();
270 memcpy(HeaderBaseBegin(), data, HeaderBaseSize());
271 data += HeaderBaseSize();
272 memcpy(HeaderBegin(), data, HeaderSize());
273 data += HeaderSize();
274 if(GetExtendedDataSize()>0) {
275 memcpy(GetExtendedData(), data, GetExtendedDataSize());
276 data += GetExtendedDataSize();
280 return (Int_t)((Long_t)data - start);
283 //______________________________________________________________________________
284 UInt_t AliRawEventHeaderBase::Get(const char *datamember) const
286 // The method to get a data member from the header object
287 // Except for the data members of the base class, all the
288 // other header data should be retrieved ONLY by this method
289 // The name of the data member should be supplied without "f"
293 strcat(buf,datamember);
295 TDataMember *member = IsA()->GetDataMember(buf);
297 AliFatal(Form("No data member %s is found! Check the raw data version!",buf));
301 if (member->GetArrayDim() != 0) {
302 AliFatal(Form("Member %s is an array! Use the GetP() method!",buf));
306 if (strcmp(member->GetTypeName(),"UInt_t") != 0) {
307 AliFatal(Form("Member %s is not of type UInt_t!",buf));
311 const void *pointer = (char *)this+member->GetOffset();
313 return *((UInt_t *)pointer);
316 //______________________________________________________________________________
317 const UInt_t* AliRawEventHeaderBase::GetP(const char *datamember) const
319 // The method to get a data member from the header object
320 // Except for the data members of the base class, all the
321 // other header data should be retrieved ONLY by this method
322 // The name of the data member should be supplied without "f"
326 strcat(buf,datamember);
328 TDataMember *member = IsA()->GetDataMember(buf);
330 AliFatal(Form("No data member %s is found! Check the raw data version!",buf));
334 // if (member->GetArrayDim() == 0) {
335 // AliFatal(Form("Member %s is not an array! Use the Get() method!",buf));
339 if (strcmp(member->GetTypeName(),"UInt_t") != 0) {
340 AliFatal(Form("Member %s is not of type UInt_t*!",buf));
344 const void *pointer = (char *)this+member->GetOffset();
346 return (const UInt_t*)pointer;