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0973c527 | 1 | // ************************************************************************** |
2 | // This file is property of and copyright by the ALICE HLT Project * | |
3 | // ALICE Experiment at CERN, All rights reserved. * | |
4 | // * | |
5 | // Primary Authors: Sergey Gorbunov <sergey.gorbunov@kip.uni-heidelberg.de> * | |
6 | // for The ALICE HLT Project. * | |
7 | // * | |
8 | // Permission to use, copy, modify and distribute this software and its * | |
9 | // documentation strictly for non-commercial purposes is hereby granted * | |
10 | // without fee, provided that the above copyright notice appears in all * | |
11 | // copies and that both the copyright notice and this permission notice * | |
12 | // appear in the supporting documentation. The authors make no claims * | |
13 | // about the suitability of this software for any purpose. It is * | |
14 | // provided "as is" without express or implied warranty. * | |
15 | // * | |
16 | //*************************************************************************** | |
17 | ||
18 | /// @file AliHLTTPCdEdxComponent.cxx | |
19 | /// @author Sergey Gorbunov <sergey.gorbunov@kip.uni-heidelberg.de> | |
20 | /// @date June 2009 | |
21 | /// @brief An ITS tracker processing component for the HLT | |
22 | ||
23 | ||
24 | ///////////////////////////////////////////////////// | |
25 | // // | |
26 | // dEdx calculation component for the HLT TPC // | |
27 | // // | |
28 | ///////////////////////////////////////////////////// | |
29 | ||
30 | #include "AliHLTTPCdEdxComponent.h" | |
31 | #include "TStopwatch.h" | |
32 | #include "TMath.h" | |
33 | #include "AliCDBEntry.h" | |
34 | #include "AliCDBManager.h" | |
35 | #include "TObjString.h" | |
36 | #include "TObjArray.h" | |
37 | #include "AliHLTDataTypes.h" | |
38 | #include "AliHLTExternalTrackParam.h" | |
39 | #include "AliHLTGlobalBarrelTrack.h" | |
40 | #include "AliHLTTPCTransform.h" | |
41 | #include "AliHLTTPCSpacePointData.h" | |
42 | #include "AliHLTTPCClusterDataFormat.h" | |
43 | #include "AliHLTTPCTrackletDataFormat.h" | |
44 | #include "AliHLTTPCDefinitions.h" | |
45 | #include "AliTPCseed.h" | |
46 | #include "AliTPCclusterMI.h" | |
47 | #include "TGeoGlobalMagField.h" | |
48 | #include "AliMagF.h" | |
49 | ||
50 | ||
51 | /** ROOT macro for the implementation of ROOT specific class methods */ | |
52 | ClassImp( AliHLTTPCdEdxComponent ) | |
53 | AliHLTTPCdEdxComponent::AliHLTTPCdEdxComponent() | |
54 | : | |
55 | fSolenoidBz( 0 ), | |
56 | fStatTime( 0 ), | |
57 | fStatNEvents( 0 ) | |
58 | { | |
59 | // see header file for class documentation | |
60 | // or | |
61 | // refer to README to build package | |
62 | // or | |
63 | // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt | |
64 | for( int i=0; i<fkNPatches; i++ ){ | |
65 | fPatchClusters[i] = 0; | |
66 | fNPatchClusters[i] = 0; | |
67 | } | |
68 | } | |
69 | ||
70 | AliHLTTPCdEdxComponent::AliHLTTPCdEdxComponent( const AliHLTTPCdEdxComponent& ) | |
71 | : | |
72 | AliHLTProcessor(), | |
73 | fSolenoidBz( 0 ), | |
74 | fStatTime( 0 ), | |
75 | fStatNEvents( 0 ) | |
76 | { | |
77 | // see header file for class documentation | |
78 | HLTFatal( "copy constructor untested" ); | |
79 | } | |
80 | ||
81 | AliHLTTPCdEdxComponent& AliHLTTPCdEdxComponent::operator=( const AliHLTTPCdEdxComponent& ) | |
82 | { | |
83 | // see header file for class documentation | |
84 | HLTFatal( "assignment operator untested" ); | |
85 | for( int i=0; i<fkNPatches; i++ ){ | |
86 | fPatchClusters[i] = 0; | |
87 | fNPatchClusters[i] = 0; | |
88 | } | |
89 | return *this; | |
90 | } | |
91 | ||
92 | AliHLTTPCdEdxComponent::~AliHLTTPCdEdxComponent() | |
93 | { | |
94 | // see header file for class documentation | |
95 | for( int i=0; i<fkNPatches; i++ ){ | |
96 | delete[] fPatchClusters[i]; | |
97 | } | |
98 | } | |
99 | ||
100 | // | |
101 | // Public functions to implement AliHLTComponent's interface. | |
102 | // These functions are required for the registration process | |
103 | // | |
104 | ||
105 | const char* AliHLTTPCdEdxComponent::GetComponentID() | |
106 | { | |
107 | // see header file for class documentation | |
108 | return "TPCdEdx"; | |
109 | } | |
110 | ||
111 | void AliHLTTPCdEdxComponent::GetInputDataTypes( vector<AliHLTComponentDataType>& list ) | |
112 | { | |
113 | // see header file for class documentation | |
114 | list.clear(); | |
115 | list.push_back( kAliHLTDataTypeTrack|kAliHLTDataOriginTPC ); | |
116 | list.push_back( AliHLTTPCDefinitions::fgkClustersDataType ); | |
117 | } | |
118 | ||
119 | AliHLTComponentDataType AliHLTTPCdEdxComponent::GetOutputDataType() | |
120 | { | |
121 | // see header file for class documentation | |
122 | return kAliHLTDataTypedEdx|kAliHLTDataOriginTPC; | |
123 | } | |
124 | ||
125 | void AliHLTTPCdEdxComponent::GetOutputDataSize( unsigned long& constBase, double& inputMultiplier ) | |
126 | { | |
127 | // define guess for the output data size | |
128 | constBase = 200; // minimum size | |
129 | inputMultiplier = 0.1; // size relative to input | |
130 | } | |
131 | ||
132 | AliHLTComponent* AliHLTTPCdEdxComponent::Spawn() | |
133 | { | |
134 | // see header file for class documentation | |
135 | return new AliHLTTPCdEdxComponent; | |
136 | } | |
137 | ||
138 | void AliHLTTPCdEdxComponent::SetDefaultConfiguration() | |
139 | { | |
140 | // Set default configuration for the CA tracker component | |
141 | // Some parameters can be later overwritten from the OCDB | |
142 | ||
143 | fSolenoidBz = -5.00668; | |
144 | fStatTime = 0; | |
145 | fStatNEvents = 0; | |
146 | } | |
147 | ||
148 | int AliHLTTPCdEdxComponent::ReadConfigurationString( const char* arguments ) | |
149 | { | |
150 | // Set configuration parameters for the CA tracker component from the string | |
151 | ||
152 | int iResult = 0; | |
153 | if ( !arguments ) return iResult; | |
154 | ||
155 | TString allArgs = arguments; | |
156 | TString argument; | |
157 | int bMissingParam = 0; | |
158 | ||
159 | TObjArray* pTokens = allArgs.Tokenize( " " ); | |
160 | ||
161 | int nArgs = pTokens ? pTokens->GetEntries() : 0; | |
162 | ||
163 | for ( int i = 0; i < nArgs; i++ ) { | |
164 | argument = ( ( TObjString* )pTokens->At( i ) )->GetString(); | |
165 | if ( argument.IsNull() ) continue; | |
166 | ||
167 | if ( argument.CompareTo( "-solenoidBz" ) == 0 ) { | |
168 | if ( ( bMissingParam = ( ++i >= pTokens->GetEntries() ) ) ) break; | |
169 | fSolenoidBz = ( ( TObjString* )pTokens->At( i ) )->GetString().Atof(); | |
170 | HLTInfo( "Magnetic Field set to: %f", fSolenoidBz ); | |
171 | continue; | |
172 | } | |
173 | ||
174 | HLTError( "Unknown option \"%s\"", argument.Data() ); | |
175 | iResult = -EINVAL; | |
176 | } | |
177 | delete pTokens; | |
178 | ||
179 | if ( bMissingParam ) { | |
180 | HLTError( "Specifier missed for parameter \"%s\"", argument.Data() ); | |
181 | iResult = -EINVAL; | |
182 | } | |
183 | ||
184 | return iResult; | |
185 | } | |
186 | ||
187 | ||
188 | int AliHLTTPCdEdxComponent::ReadCDBEntry( const char* cdbEntry, const char* chainId ) | |
189 | { | |
190 | // see header file for class documentation | |
191 | ||
192 | const char* defaultNotify = ""; | |
193 | ||
194 | if ( !cdbEntry ) { | |
195 | return 0;// need to add the HLT/ConfigTPC/TPCdEdx directory to cdb SG!!! | |
196 | cdbEntry = "HLT/ConfigTPC/TPCdEdx"; | |
197 | defaultNotify = " (default)"; | |
198 | chainId = 0; | |
199 | } | |
200 | ||
201 | HLTInfo( "configure from entry \"%s\"%s, chain id %s", cdbEntry, defaultNotify, ( chainId != NULL && chainId[0] != 0 ) ? chainId : "<none>" ); | |
202 | AliCDBEntry *pEntry = AliCDBManager::Instance()->Get( cdbEntry );//,GetRunNo()); | |
203 | ||
204 | if ( !pEntry ) { | |
205 | HLTError( "cannot fetch object \"%s\" from CDB", cdbEntry ); | |
206 | return -EINVAL; | |
207 | } | |
208 | ||
209 | TObjString* pString = dynamic_cast<TObjString*>( pEntry->GetObject() ); | |
210 | ||
211 | if ( !pString ) { | |
212 | HLTError( "configuration object \"%s\" has wrong type, required TObjString", cdbEntry ); | |
213 | return -EINVAL; | |
214 | } | |
215 | ||
216 | HLTInfo( "received configuration object string: \"%s\"", pString->GetString().Data() ); | |
217 | ||
218 | return ReadConfigurationString( pString->GetString().Data() ); | |
219 | } | |
220 | ||
221 | ||
222 | int AliHLTTPCdEdxComponent::Configure( const char* cdbEntry, const char* chainId, const char *commandLine ) | |
223 | { | |
224 | // Configure the component | |
225 | // There are few levels of configuration, | |
226 | // parameters which are set on one step can be overwritten on the next step | |
227 | ||
228 | //* read hard-coded values | |
229 | ||
230 | SetDefaultConfiguration(); | |
231 | ||
232 | //* read the default CDB entry | |
233 | ||
234 | int iResult1 = ReadCDBEntry( NULL, chainId ); | |
235 | ||
236 | //* read magnetic field | |
237 | ||
238 | int iResult2 = ReadCDBEntry( kAliHLTCDBSolenoidBz, chainId ); | |
239 | ||
240 | //* read the actual CDB entry if required | |
241 | ||
242 | int iResult3 = ( cdbEntry ) ? ReadCDBEntry( cdbEntry, chainId ) : 0; | |
243 | ||
244 | //* read extra parameters from input (if they are) | |
245 | ||
246 | int iResult4 = 0; | |
247 | ||
248 | if ( commandLine && commandLine[0] != '\0' ) { | |
249 | HLTInfo( "received configuration string from HLT framework: \"%s\"", commandLine ); | |
250 | iResult4 = ReadConfigurationString( commandLine ); | |
251 | } | |
252 | ||
253 | // Initialise the tracker here | |
254 | ||
255 | return iResult1 ? iResult1 : ( iResult2 ? iResult2 : ( iResult3 ? iResult3 : iResult4 ) ); | |
256 | } | |
257 | ||
258 | ||
259 | ||
260 | int AliHLTTPCdEdxComponent::DoInit( int argc, const char** argv ) | |
261 | { | |
262 | // Configure the component | |
263 | ||
264 | TString arguments = ""; | |
265 | for ( int i = 0; i < argc; i++ ) { | |
266 | if ( !arguments.IsNull() ) arguments += " "; | |
267 | arguments += argv[i]; | |
268 | } | |
269 | ||
270 | int ret = Configure( NULL, NULL, arguments.Data() ); | |
271 | ||
272 | // set field | |
273 | if (!TGeoGlobalMagField::Instance()->IsLocked()) { | |
274 | AliMagF* field = new AliMagF("Maps","Maps",1.,1.,AliMagF::k5kG); | |
275 | field->SetFactorSol(1); | |
276 | Double_t initialFieldStrengh=field->SolenoidField(); | |
277 | field->SetFactorSol(fSolenoidBz/initialFieldStrengh); | |
278 | TGeoGlobalMagField::Instance()->SetField(field); | |
279 | } | |
280 | ||
281 | //AliTPCTransform *transform = AliTPCcalibDB::Instance()->GetTransform(); | |
282 | //if( transform ){ | |
283 | //AliTPCRecoParam *reco = transform->GetCurrentRecoParam(); | |
284 | //if( ! reco ){ | |
285 | //reco = new AliTPCRecoParam; | |
286 | //reco->SetUseTotalCharge(0); | |
287 | //transform->SetCurrentRecoParam( reco ); | |
288 | //} | |
289 | ||
290 | return ret; | |
291 | } | |
292 | ||
293 | ||
294 | int AliHLTTPCdEdxComponent::DoDeinit() | |
295 | { | |
296 | // see header file for class documentation | |
297 | return 0; | |
298 | } | |
299 | ||
300 | ||
301 | ||
302 | int AliHLTTPCdEdxComponent::Reconfigure( const char* cdbEntry, const char* chainId ) | |
303 | { | |
304 | // Reconfigure the component from OCDB . | |
305 | ||
306 | return Configure( cdbEntry, chainId, NULL ); | |
307 | } | |
308 | ||
309 | ||
310 | ||
311 | int AliHLTTPCdEdxComponent::DoEvent | |
312 | ( | |
313 | const AliHLTComponentEventData& evtData, | |
314 | const AliHLTComponentBlockData* blocks, | |
315 | AliHLTComponentTriggerData& /*trigData*/, | |
316 | AliHLTUInt8_t* outputPtr, | |
317 | AliHLTUInt32_t& size, | |
318 | vector<AliHLTComponentBlockData>& outputBlocks ) | |
319 | { | |
320 | //* process the event | |
321 | ||
322 | AliHLTUInt32_t maxBufferSize = size; | |
323 | size = 0; // output size | |
324 | ||
325 | if (!IsDataEvent()) return 0; | |
326 | ||
327 | if ( evtData.fBlockCnt <= 0 ) { | |
328 | HLTWarning( "no blocks in event" ); | |
329 | return 0; | |
330 | } | |
331 | if ( !outputPtr ) { | |
332 | return -ENOSPC; | |
333 | } | |
334 | ||
335 | int iResult=0; | |
336 | ||
337 | TStopwatch timer; | |
338 | ||
339 | // Initialise the data pointers | |
340 | ||
341 | for( int i=0; i<fkNPatches; i++ ){ | |
342 | delete[] fPatchClusters[i]; | |
343 | fPatchClusters[i] = 0; | |
344 | fNPatchClusters[i] = 0; | |
345 | } | |
346 | ||
347 | int nBlocks = (int)evtData.fBlockCnt; | |
348 | ||
349 | int nInputClusters = 0; | |
350 | int nInputTracks = 0; | |
351 | ||
352 | // first read all the clusters | |
353 | ||
354 | for (int ndx=0; ndx<nBlocks && iResult>=0; ndx++) { | |
355 | const AliHLTComponentBlockData* iter = blocks+ndx; | |
356 | if ( iter->fDataType != AliHLTTPCDefinitions::fgkClustersDataType ) continue; | |
357 | Int_t slice=AliHLTTPCDefinitions::GetMinSliceNr(iter->fSpecification); | |
358 | Int_t patch=AliHLTTPCDefinitions::GetMinPatchNr(iter->fSpecification); | |
359 | Int_t slicepatch=slice*6+patch; | |
360 | if( slicepatch > fkNPatches ){ | |
361 | HLTWarning("Wrong header of TPC cluster data, slice %d, patch %d", | |
362 | slice, patch ); | |
363 | continue; | |
364 | } | |
365 | AliHLTTPCClusterData* inPtrSP = ( AliHLTTPCClusterData* )( iter->fPtr ); | |
366 | nInputClusters += inPtrSP->fSpacePointCnt; | |
367 | ||
368 | delete[] fPatchClusters[slicepatch]; | |
369 | fPatchClusters[slicepatch] = new AliTPCclusterMI[inPtrSP->fSpacePointCnt]; | |
370 | fNPatchClusters[slicepatch] = inPtrSP->fSpacePointCnt; | |
371 | ||
372 | // create off-line clusters out of the HLT clusters | |
373 | // todo: check which cluster information is really needed for the dEdx | |
374 | ||
375 | for ( unsigned int i = 0; i < inPtrSP->fSpacePointCnt; i++ ) { | |
376 | AliHLTTPCSpacePointData *chlt = &( inPtrSP->fSpacePoints[i] ); | |
377 | AliTPCclusterMI *c = fPatchClusters[slicepatch]+i; | |
378 | c->SetX(chlt->fX); | |
379 | c->SetY(chlt->fY); | |
380 | c->SetZ(chlt->fZ); | |
381 | c->SetSigmaY2(chlt->fSigmaY2); | |
382 | c->SetSigmaYZ( 0 ); | |
383 | c->SetSigmaZ2(chlt->fSigmaZ2); | |
384 | c->SetQ( chlt->fCharge ); | |
385 | c->SetMax( chlt->fQMax ); | |
386 | Int_t sector, row; | |
387 | Float_t padtime[3]={0,chlt->fY,chlt->fZ}; | |
388 | AliHLTTPCTransform::Slice2Sector(slice,chlt->fPadRow, sector, row); | |
389 | AliHLTTPCTransform::Local2Raw( padtime, sector, row); | |
390 | c->SetDetector( sector ); | |
391 | c->SetRow( row ); | |
392 | c->SetPad( (Int_t) padtime[1] ); | |
393 | c->SetTimeBin( (Int_t) padtime[2] ); | |
394 | } | |
395 | } | |
396 | ||
397 | ||
398 | // loop over the input tracks: calculate dEdx and write output | |
399 | ||
400 | unsigned int outSize = 0; | |
401 | AliHLTFloat32_t *outPtr = ( AliHLTFloat32_t * )( outputPtr ); | |
402 | ||
403 | for (const AliHLTComponentBlockData* pBlock=GetFirstInputBlock(kAliHLTDataTypeTrack|kAliHLTDataOriginTPC); | |
404 | pBlock!=NULL; pBlock=GetNextInputBlock()) { | |
405 | ||
406 | AliHLTComponentBlockData outBlock; | |
407 | FillBlockData( outBlock ); | |
408 | outBlock.fOffset = outSize; | |
409 | outBlock.fSize = 0; | |
410 | outBlock.fDataType = kAliHLTDataTypedEdx|kAliHLTDataOriginTPC; | |
411 | outBlock.fSpecification = pBlock->fSpecification; | |
412 | ||
413 | AliHLTTracksData* dataPtr = ( AliHLTTracksData* ) pBlock->fPtr; | |
414 | int nTracks = dataPtr->fCount; | |
415 | AliHLTExternalTrackParam* currTrack = dataPtr->fTracklets; | |
416 | nInputTracks+=nTracks; | |
417 | ||
418 | for( int itr=0; | |
419 | itr<nTracks && ( (AliHLTUInt8_t *)currTrack < ((AliHLTUInt8_t *) pBlock->fPtr)+pBlock->fSize); | |
420 | itr++ ){ | |
421 | ||
422 | // create an off-line track | |
423 | AliHLTGlobalBarrelTrack gb(*currTrack); | |
424 | AliTPCseed tTPC; | |
425 | tTPC.Set( gb.GetX(), gb.GetAlpha(), | |
426 | gb.GetParameter(), gb.GetCovariance() ); | |
427 | ||
428 | // set the clusters | |
429 | ||
430 | for( Int_t ic=0; ic<currTrack->fNPoints; ic++){ | |
431 | UInt_t id = currTrack->fPointIDs[ic]; | |
432 | int iSlice = id>>25; | |
433 | int iPatch = (id>>22)&0x7; | |
434 | int iCluster = id&0x3fffff; | |
435 | if( iSlice<0 || iSlice>36 || iPatch<0 || iPatch>5 ){ | |
436 | HLTError("Corrupted TPC cluster Id: slice %d, patch %d, cluster %d", | |
437 | iSlice, iPatch,iCluster ); | |
438 | continue; | |
439 | } | |
440 | AliTPCclusterMI *patchClusters = fPatchClusters[iSlice*6 + iPatch]; | |
441 | if( !patchClusters ){ | |
442 | HLTError("Clusters are missed for slice %d, patch %d", | |
443 | iSlice, iPatch ); | |
444 | continue; | |
445 | } | |
446 | if( iCluster >= fNPatchClusters[iSlice*6 + iPatch] ){ | |
447 | HLTError("TPC slice %d, patch %d: ClusterID==%d >= N Cluaters==%d ", | |
448 | iSlice, iPatch,iCluster, fNPatchClusters[iSlice*6 + iPatch] ); | |
449 | continue; | |
450 | } | |
451 | AliTPCclusterMI *c = &(patchClusters[iCluster]); | |
452 | ||
453 | int sec = c->GetDetector(); | |
454 | int row = c->GetRow(); | |
455 | if ( sec >= 36 ) { | |
456 | row = row + AliHLTTPCTransform::GetNRowLow(); | |
457 | } | |
458 | tTPC.SetClusterPointer( row, c ); | |
459 | ||
460 | AliTPCTrackerPoint &point = *( tTPC.GetTrackPoint( row ) ); | |
461 | tTPC.Propagate( TMath::DegToRad()*(sec%18*20.+10.), fSolenoidBz, c->GetX() ); | |
462 | Double_t angle2 = tTPC.GetSnp()*tTPC.GetSnp(); | |
463 | angle2 = (angle2<1) ?TMath::Sqrt(angle2/(1-angle2)) :10.; | |
464 | point.SetAngleY( angle2 ); | |
465 | point.SetAngleZ( tTPC.GetTgl() ); | |
466 | } | |
467 | ||
468 | // Cook dEdx | |
469 | ||
470 | if( outSize+sizeof( AliHLTFloat32_t ) > maxBufferSize ){ | |
471 | HLTWarning( "Output buffer size %d exceed", maxBufferSize ); | |
472 | iResult = -ENOSPC; | |
473 | break; | |
474 | } | |
475 | *outPtr = tTPC.CookdEdx( 0.02, 0.6 ); | |
476 | outPtr++; | |
477 | outSize+=sizeof( AliHLTFloat32_t ); | |
478 | outBlock.fSize+=sizeof( AliHLTFloat32_t ); | |
479 | ||
480 | unsigned int step = sizeof( AliHLTExternalTrackParam ) + currTrack->fNPoints * sizeof( unsigned int ); | |
481 | currTrack = ( AliHLTExternalTrackParam* )( (( Byte_t * )currTrack) + step ); | |
482 | } | |
483 | if( iResult<0 ) break; | |
484 | outputBlocks.push_back( outBlock ); | |
485 | size = outSize; | |
486 | } | |
487 | ||
488 | timer.Stop(); | |
489 | fStatTime += timer.RealTime(); | |
490 | fStatNEvents++; | |
491 | ||
492 | // Set log level to "Warning" for on-line system monitoring | |
493 | int hz = ( int ) ( fStatTime > 1.e-10 ? fStatNEvents / fStatTime : 100000 ); | |
494 | ||
495 | HLTInfo( "TPCdEdx : %d clusters and %d tracks processed; average time %d Hz", | |
496 | nInputClusters, nInputTracks, hz ); | |
497 | ||
498 | return iResult; | |
499 | } |