[u/mrichter/AliRoot.git] / TRD / AliTRDReconstructor.cxx

/**************************************************************************
* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
*                                                                        *
* Author: The ALICE Off-line Project.                                    *
* Contributors are mentioned in the code where appropriate.              *
*                                                                        *
* Permission to use, copy, modify and distribute this software and its   *
* documentation strictly for non-commercial purposes is hereby granted   *
* without fee, provided that the above copyright notice appears in all   *
* copies and that both the copyright notice and this permission notice   *
* appear in the supporting documentation. The authors make no claims     *
* about the suitability of this software for any purpose. It is          *
* provided "as is" without express or implied warranty.                  *
**************************************************************************/

/* $Id$ */

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
// Class for TRD reconstruction                                              //
//                                                                           //   
// For the special options which can be used during reconstruction and their //
//  default values pls. see function SetOption().                            //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include <TObjString.h>
#include <TObjArray.h>
#include <TTreeStream.h>
#include <TDirectory.h>
#include <TRef.h>

#include "AliRawReader.h"
#include "AliLog.h"

#include "AliTRDReconstructor.h"
#include "AliTRDclusterizer.h"
#include "AliTRDrawData.h"
#include "AliTRDrawStream.h"
#include "AliTRDdigitsManager.h"
#include "AliTRDtrackerV1.h"
#include "AliESDEvent.h"
#include "AliESDTrdTrack.h"
#include "AliESDTrdTracklet.h"
#include "AliESDTrdTrigger.h"
#include "AliTRDtrackletWord.h"

#define SETFLG(n,f) ((n) |= f)
#define CLRFLG(n,f) ((n) &= ~f)

ClassImp(AliTRDReconstructor)

AliESDTrdTrigger AliTRDReconstructor::fgTriggerFlags;
TClonesArray *AliTRDReconstructor::fgClusters = NULL;
TClonesArray *AliTRDReconstructor::fgTracklets = NULL;
TClonesArray *AliTRDReconstructor::fgTracks = NULL;
Char_t const * AliTRDReconstructor::fgSteerNames[kNsteer] = {
  "DigitsConversion       "
 ,"Write Clusters         "
 ,"Write Online Tracklets "
 ,"Stand Alone Tracking   "
 ,"HLT Mode              "
 ,"Process Online Trklts  "
 ,"Debug Streaming       "
 ,"Cl. Radial Correction  "
};
Char_t const * AliTRDReconstructor::fgSteerFlags[kNsteer] = {
  "dc"// digits conversion [false]
 ,"cw"// write clusters [true]
 ,"tw"// write online tracklets [false]
 ,"sa"// track seeding (stand alone tracking) [true]
 ,"hlt"// HLT reconstruction [false]
 ,"tp"// also use online tracklets for reconstruction [false]
 ,"deb"// Write debug stream [false]
 ,"cc" // Cluster radial correction during reconstruction [false]
};
Char_t const * AliTRDReconstructor::fgTaskNames[AliTRDrecoParam::kTRDreconstructionTasks] = {
  "Clusterizer"
 ,"Tracker"
 ,"PID"
};
Char_t const * AliTRDReconstructor::fgTaskFlags[AliTRDrecoParam::kTRDreconstructionTasks] = {
  "cl"
 ,"tr"
 ,"pd"
};
Int_t AliTRDReconstructor::fgNTimeBins = -1;
const  Float_t  AliTRDReconstructor::fgkMinClustersInTrack =  0.5;  //
const  Float_t  AliTRDReconstructor::fgkLabelFraction      =  0.8;  //
const  Double_t AliTRDReconstructor::fgkMaxChi2            = 12.0;  //
const  Double_t AliTRDReconstructor::fgkMaxSnp             =  0.95; // Maximum local sine of the azimuthal angle
const  Double_t AliTRDReconstructor::fgkMaxStep            =  2.0;  // Maximal step size in propagation
const Double_t  AliTRDReconstructor::fgkEpsilon            = 1.e-5;                  // Precision of radial coordinate

//_____________________________________________________________________________
AliTRDReconstructor::AliTRDReconstructor()
  :AliReconstructor()
  ,fSteerParam(0)
  ,fClusterizer(NULL)
{
  // setting default "ON" steering parameters
  // owner of debug streamers 
  SETFLG(fSteerParam, kOwner);
  // write clusters [cw]
  SETFLG(fSteerParam, kWriteClusters);
  // track seeding (stand alone tracking) [sa]
  //SETFLG(fSteerParam, kSeeding);
  // Cluster radial correction during reconstruction [cc]
  //SETFLG(fSteerParam, kClRadialCorr);
  memset(fDebugStream, 0, sizeof(TTreeSRedirector *) * AliTRDrecoParam::kTRDreconstructionTasks);
}

//_____________________________________________________________________________
AliTRDReconstructor::~AliTRDReconstructor()
{
  //
  // Destructor
  //

  if(fgClusters) {
    fgClusters->Delete();
    delete fgClusters;
    fgClusters = NULL;
  }
  if(fgTracklets) {
    fgTracklets->Delete();
    delete fgTracklets;
    fgTracklets = NULL;
  }
  if(fgTracks) {
    fgTracks->Delete();
    delete fgTracks;
    fgTracks = NULL;
  }
  if(fSteerParam&kOwner){
    for(Int_t itask = 0; itask < AliTRDrecoParam::kTRDreconstructionTasks; itask++)
      if(fDebugStream[itask]) delete fDebugStream[itask];
  }
  if(fClusterizer){
    delete fClusterizer;
    fClusterizer = NULL;
  }
}


//_____________________________________________________________________________
void AliTRDReconstructor::Init(){
  //
  // Init Options
  //
  SetOption(GetOption());
  Options(fSteerParam);

  if(!fClusterizer){
    fClusterizer = new AliTRDclusterizer(fgTaskNames[AliTRDrecoParam::kClusterizer], fgTaskNames[AliTRDrecoParam::kClusterizer]);
    fClusterizer->SetReconstructor(this);
  }
  
  // Make Debug Streams when Debug Streaming
  if(IsDebugStreaming()){
    for(Int_t task = 0; task < AliTRDrecoParam::kTRDreconstructionTasks; task++){
      TDirectory *savedir = gDirectory;
      fDebugStream[task] = new TTreeSRedirector(Form("TRD.Debug%s.root", fgTaskNames[task]));
      savedir->cd();
      SETFLG(fSteerParam, kOwner);
    }
  }
}

//_____________________________________________________________________________
void AliTRDReconstructor::ConvertDigits(AliRawReader *rawReader
              , TTree *digitsTree) const
{
  //
  // Convert raw data digits into digit objects in a root tree
  //

  //AliInfo("Convert raw data digits into digit objects [RawReader -> Digit TTree]");

  AliTRDrawData rawData;
  rawReader->Reset();
  rawReader->Select("TRD");
  AliTRDdigitsManager *manager = rawData.Raw2Digits(rawReader);
  manager->MakeBranch(digitsTree);
  manager->WriteDigits();
  delete manager;

  // take over ownership of online tracklets
  fgTracklets = rawData.TrackletsArray();
  rawData.SetTrackletsOwner(0x0);

  // take over GTU tracks
  fgTracks = rawData.TracksArray();
  rawData.SetTracksOwner(0x0);

  for (Int_t iSector = 0; iSector < 18; iSector++) {
    fgTriggerFlags.SetFlags(iSector, rawData.GetTriggerFlags(iSector));
  }
}

//_____________________________________________________________________________
void AliTRDReconstructor::Reconstruct(AliRawReader *rawReader
                                    , TTree *clusterTree) const
{
  //
  // Reconstruct clusters
  //

  //AliInfo("Reconstruct TRD clusters from RAW data [RawReader -> Cluster TTree]");


  rawReader->Reset();
  rawReader->Select("TRD");

  if(!fClusterizer){
    AliFatal("Clusterizer not available!");
    return;
  }

  fClusterizer->ResetRecPoints();

  fClusterizer->OpenOutput(clusterTree);
  fClusterizer->SetUseLabels(kFALSE);
  fClusterizer->SetStoreRawSignals(kTRUE);
  fClusterizer->Raw2ClustersChamber(rawReader);
  
  fgNTimeBins = fClusterizer->GetNTimeBins();
  
  // take over ownership of online tracklets
  fgTracklets = fClusterizer->TrackletsArray();
  fClusterizer->SetTrackletsOwner(kFALSE);

  // take over GTU tracks
  fgTracks = fClusterizer->TracksArray();
  fClusterizer->SetTracksOwner(kFALSE);

  for (Int_t iSector = 0; iSector < 18; iSector++) {
    fgTriggerFlags.SetFlags(iSector, fClusterizer->GetTriggerFlags(iSector));
  }

  if(IsWritingClusters()) return;

  // take over ownership of clusters
  fgClusters = fClusterizer->RecPoints();
  fClusterizer->SetClustersOwner(kFALSE);
}

//_____________________________________________________________________________
void AliTRDReconstructor::Reconstruct(TTree *digitsTree
                                    , TTree *clusterTree) const
{
  //
  // Reconstruct clusters
  //

  //AliInfo("Reconstruct TRD clusters from Digits [Digit TTree -> Cluster TTree]");
  
  AliTRDclusterizer clusterer(fgTaskNames[AliTRDrecoParam::kClusterizer], fgTaskNames[AliTRDrecoParam::kClusterizer]);
  clusterer.SetReconstructor(this);
  clusterer.SetUseLabels(kTRUE);
  clusterer.SetStoreRawSignals(kTRUE);
  clusterer.OpenOutput(clusterTree);
  clusterer.ReadDigits(digitsTree);
  clusterer.MakeClusters();

  // read tracklets and tracks if not done during reading of raw data
  if (!fgTracklets) {
    clusterer.ReadTracklets();
    fgTracklets = clusterer.TrackletsArray();
    clusterer.SetTrackletsOwner(kFALSE);
  }
  if (!fgTracks) {
    clusterer.ReadTracks();
    fgTracks = clusterer.TracksArray();
    clusterer.SetTracksOwner(kFALSE);
  }

  fgNTimeBins = clusterer.GetNTimeBins();

  if(IsWritingClusters()) return;

  // take over ownership of clusters
  fgClusters = clusterer.RecPoints();
  clusterer.SetClustersOwner(kFALSE);
}

//_____________________________________________________________________________
AliTracker *AliTRDReconstructor::CreateTracker() const
{
  //
  // Create a TRD tracker
  //

  //return new AliTRDtracker(NULL);
  AliTRDtrackerV1 *tracker = new AliTRDtrackerV1();
  tracker->SetReconstructor(this);
  return tracker;

}

//_____________________________________________________________________________
void AliTRDReconstructor::FillESD(TTree* /*digitsTree*/
        , TTree* /*clusterTree*/
        , AliESDEvent* esd) const
{
  //
  // Fill ESD
  //

  // ----- filling tracklets -----
  Int_t trackletIndex[1080] = { 0 };
  AliDebug(1, Form("Filling tracklets from %p (%i)",
		   fgTracklets, fgTracklets ? fgTracklets->GetEntriesFast() : 0));
  if (fgTracklets) {
    Int_t nTracklets = fgTracklets->GetEntriesFast();

    Int_t lastHC = -1;
    for (Int_t iTracklet = 0; iTracklet < nTracklets; iTracklet++) {
      AliTRDtrackletBase *trkl = (AliTRDtrackletBase*) ((*fgTracklets)[iTracklet]);
      Int_t hc = trkl->GetHCId();
      //      hc += trkl->GetY() > 0 ? 1 : 0;
      if ((hc < 0) || (hc >= 1080)) {
	AliError(Form("HC for tracklet: 0x%08x out of range: %i", trkl->GetTrackletWord(), trkl->GetHCId()));
	continue;
      }
      AliDebug(5, Form("hc: %4i : 0x%08x z: %2i", hc, trkl->GetTrackletWord(), trkl->GetZbin()));
      if (hc != lastHC) {
	AliDebug(2, Form("set tracklet index for HC %i to %i", hc, iTracklet));
	trackletIndex[hc] = iTracklet + 1;
	lastHC = hc;
      }
    }

    for (Int_t iDet = 0; iDet < 540; iDet++) {
      Int_t trklIndexA = trackletIndex[2*iDet + 0] - 1;
      Int_t trklIndexB = trackletIndex[2*iDet + 1] - 1;
      Int_t trklIndex  = esd->GetNumberOfTrdTracklets();
      AliTRDtrackletBase *trklA = trklIndexA > -1 ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexA]) : 0x0;
      AliTRDtrackletBase *trklB = trklIndexB > -1 ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexB]) : 0x0;
      while (trklA != 0x0 || trklB != 0x0) {
	AliDebug(5, Form("det %i - A: %i/%i -> %p, B: %i/%i -> %p",
			 iDet, trklIndexA, nTracklets, trklA, trklIndexB, nTracklets, trklB));
	if (trklA == 0x0) {
	  AliESDTrdTracklet esdTracklet(trklB->GetTrackletWord(), trklB->GetHCId());
	  esd->AddTrdTracklet(&esdTracklet);
	  trklIndexB++;
	  trklB = trklIndexB < nTracklets ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexB]) : 0x0;
	  if (trklB && trklB->GetHCId() != 2*iDet + 1)
	    trklB = 0x0;
	}
	else if (trklB == 0x0) {
	  AliESDTrdTracklet esdTracklet(trklA->GetTrackletWord(), trklA->GetHCId());
	  esd->AddTrdTracklet(&esdTracklet);
	  trklIndexA++;
	  trklA = trklIndexA < nTracklets ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexA]) : 0x0;
	  if (trklA && trklA->GetHCId() != 2*iDet)
	    trklA = 0x0;
	}
	else {
	  if ((trklA->GetZbin() < trklB->GetZbin()) ||
	      ((trklA->GetZbin() == trklB->GetZbin()) && (trklA->GetYbin() < trklB->GetYbin()))) {
	    AliESDTrdTracklet esdTracklet(trklA->GetTrackletWord(), trklA->GetHCId());
	    esd->AddTrdTracklet(&esdTracklet);
	    trklIndexA++;
	    trklA = trklIndexA < nTracklets ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexA]) : 0x0;
	    if (trklA && trklA->GetHCId() != 2*iDet)
	      trklA = 0x0;
	  }
	  else {
	    AliESDTrdTracklet esdTracklet(trklB->GetTrackletWord(), trklB->GetHCId());
	    esd->AddTrdTracklet(&esdTracklet);
	    trklIndexB++;
	    trklB = trklIndexB < nTracklets ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexB]) : 0x0;
	    if (trklB && trklB->GetHCId() != 2*iDet + 1)
	      trklB = 0x0;
	  }
	}
      }
      // updating tracklet indices as in ESD
      if (esd->GetNumberOfTrdTracklets() != trklIndex) {
	trackletIndex[2*iDet + 0] = trackletIndex[2*iDet + 1] = trklIndex;
      }
      else
	trackletIndex[2*iDet + 0] = trackletIndex[2*iDet + 1] = -1;
    }
  }

  // ----- filling GTU tracks -----
  AliDebug(1, Form("Now filling ESD with GTU tracks from %p (%i)",
		   fgTracks, fgTracks ? fgTracks->GetEntriesFast() : 0));
  if (fgTracks) {
    for (Int_t iTrack = 0; iTrack < fgTracks->GetEntriesFast(); iTrack++) {
      AliESDTrdTrack *trdTrack = (AliESDTrdTrack*) ((*fgTracks)[iTrack]);

      UInt_t mask  = trdTrack->GetLayerMask();
      UInt_t stack = trdTrack->GetStack();

      for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
	if (mask & (1 << iLayer)) {

	  Int_t det = trdTrack->GetSector()*30 + stack*6 + iLayer;
	  Int_t idx = trdTrack->GetTrackletIndex(iLayer);

	  if ((det < 0) || (det > 539)) {
	    AliError(Form("Invalid detector no. from track: %i", 2*det));
	    continue;
	  }
	  if (trackletIndex[2*det] >= 0) {
	    if ((trackletIndex[2*det] + idx > -1) &&
		(trackletIndex[2*det] + idx < esd->GetNumberOfTrdTracklets())) {
	      AliESDTrdTracklet *trkl = esd->GetTrdTracklet(trackletIndex[2*det] + idx);
	      if (trkl) {
		AliDebug(5, Form("adding tracklet: 0x%08x", trkl->GetTrackletWord()));
		trdTrack->AddTrackletReference(trkl, iLayer);
	      }
	    }
	  }
	}
      }
      // only add the track when it's complete (including tracklet references)
      esd->AddTrdTrack(trdTrack);
    }
  }

  esd->SetTrdTrigger(&fgTriggerFlags);

  // clearing variables for next event
  fgTracklets = 0x0;
  fgTracks = 0x0;
}

//_____________________________________________________________________________
void AliTRDReconstructor::SetOption(Option_t *opt)
{
  //
  // Read option string into the steer param.
  //
  // The following string options are available during reconstruction.
  // In square brackets the default values are given.
  //   "dc"  : digits conversion [false]
  //   "cw"  : write clusters [true]
  //   "tw"  : write online tracklets [false]
  //   "sa"  : track seeding (stand alone tracking) [true]
  //   "hlt" : HLT reconstruction [false]
  //   "tp"  : also use online tracklets for reconstruction [false]
  //   "deb" : Write debug stream [false]
  //   "cc"  : Cluster radial correction during reconstruction [false]
  //
  // To check the actual options used during reconstruction include the following line in your rec.C script
  // AliLog::SetClassDebugLevel("AliTRDReconstructor", 1);

  AliReconstructor::SetOption(opt);

  TString s(opt);
  TObjArray *opar = s.Tokenize(",");
  for(Int_t ipar=0; ipar<opar->GetEntriesFast(); ipar++){
    Bool_t processed = kFALSE;
    TString sopt(((TObjString*)(*opar)[ipar])->String());
    for(Int_t iopt=0; iopt<kNsteer; iopt++){
      if(!sopt.Contains(fgSteerFlags[iopt])) continue;
      SETFLG(fSteerParam, BIT(iopt));
      if(sopt.Contains("!")) CLRFLG(fSteerParam, BIT(iopt));
      processed = kTRUE;
      break;	
    }
    if(processed) continue;

    AliWarning(Form("Unknown option flag %s.", sopt.Data()));
  }
}

//_____________________________________________________________________________
void AliTRDReconstructor::Options(UInt_t steer)
{
  //
  // Print the options
  //

  for(Int_t iopt=0; iopt<kNsteer; iopt++){
    AliDebugGeneral("AliTRDReconstructor", 1, Form(" %s[%s]%s", fgSteerNames[iopt], fgSteerFlags[iopt], steer ?(((steer>>iopt)&1)?" : ON":" : OFF"):""));
  }
}
Commit	Line	Data
	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	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	**************************************************************************/
	15
	16	/* $Id$ */
	17
	18	///////////////////////////////////////////////////////////////////////////////
	19	// //
	20	// Class for TRD reconstruction //
	21	// //
	22	// For the special options which can be used during reconstruction and their //
	23	// default values pls. see function SetOption(). //
	24	// //
	25	///////////////////////////////////////////////////////////////////////////////
	26
	27	#include <TObjString.h>
	28	#include <TObjArray.h>
	29	#include <TTreeStream.h>
	30	#include <TDirectory.h>
	31	#include <TRef.h>
	32
	33	#include "AliRawReader.h"
	34	#include "AliLog.h"
	35
	36	#include "AliTRDReconstructor.h"
	37	#include "AliTRDclusterizer.h"
	38	#include "AliTRDrawData.h"
	39	#include "AliTRDrawStream.h"
	40	#include "AliTRDdigitsManager.h"
	41	#include "AliTRDtrackerV1.h"
	42	#include "AliESDEvent.h"
	43	#include "AliESDTrdTrack.h"
	44	#include "AliESDTrdTracklet.h"
	45	#include "AliESDTrdTrigger.h"
	46	#include "AliTRDtrackletWord.h"
	47
	48	#define SETFLG(n,f) ((n) \|= f)
	49	#define CLRFLG(n,f) ((n) &= ~f)
	50
	51	ClassImp(AliTRDReconstructor)
	52
	53	AliESDTrdTrigger AliTRDReconstructor::fgTriggerFlags;
	54	TClonesArray *AliTRDReconstructor::fgClusters = NULL;
	55	TClonesArray *AliTRDReconstructor::fgTracklets = NULL;
	56	TClonesArray *AliTRDReconstructor::fgTracks = NULL;
	57	Char_t const * AliTRDReconstructor::fgSteerNames[kNsteer] = {
	58	"DigitsConversion "
	59	,"Write Clusters "
	60	,"Write Online Tracklets "
	61	,"Stand Alone Tracking "
	62	,"HLT Mode "
	63	,"Process Online Trklts "
	64	,"Debug Streaming "
	65	,"Cl. Radial Correction "
	66	};
	67	Char_t const * AliTRDReconstructor::fgSteerFlags[kNsteer] = {
	68	"dc"// digits conversion [false]
	69	,"cw"// write clusters [true]
	70	,"tw"// write online tracklets [false]
	71	,"sa"// track seeding (stand alone tracking) [true]
	72	,"hlt"// HLT reconstruction [false]
	73	,"tp"// also use online tracklets for reconstruction [false]
	74	,"deb"// Write debug stream [false]
	75	,"cc" // Cluster radial correction during reconstruction [false]
	76	};
	77	Char_t const * AliTRDReconstructor::fgTaskNames[AliTRDrecoParam::kTRDreconstructionTasks] = {
	78	"Clusterizer"
	79	,"Tracker"
	80	,"PID"
	81	};
	82	Char_t const * AliTRDReconstructor::fgTaskFlags[AliTRDrecoParam::kTRDreconstructionTasks] = {
	83	"cl"
	84	,"tr"
	85	,"pd"
	86	};
	87	Int_t AliTRDReconstructor::fgNTimeBins = -1;
	88	const Float_t AliTRDReconstructor::fgkMinClustersInTrack = 0.5; //
	89	const Float_t AliTRDReconstructor::fgkLabelFraction = 0.8; //
	90	const Double_t AliTRDReconstructor::fgkMaxChi2 = 12.0; //
	91	const Double_t AliTRDReconstructor::fgkMaxSnp = 0.95; // Maximum local sine of the azimuthal angle
	92	const Double_t AliTRDReconstructor::fgkMaxStep = 2.0; // Maximal step size in propagation
	93	const Double_t AliTRDReconstructor::fgkEpsilon = 1.e-5; // Precision of radial coordinate
	94
	95	//_____________________________________________________________________________
	96	AliTRDReconstructor::AliTRDReconstructor()
	97	:AliReconstructor()
	98	,fSteerParam(0)
	99	,fClusterizer(NULL)
	100	{
	101	// setting default "ON" steering parameters
	102	// owner of debug streamers
	103	SETFLG(fSteerParam, kOwner);
	104	// write clusters [cw]
	105	SETFLG(fSteerParam, kWriteClusters);
	106	// track seeding (stand alone tracking) [sa]
	107	//SETFLG(fSteerParam, kSeeding);
	108	// Cluster radial correction during reconstruction [cc]
	109	//SETFLG(fSteerParam, kClRadialCorr);
	110	memset(fDebugStream, 0, sizeof(TTreeSRedirector ) AliTRDrecoParam::kTRDreconstructionTasks);
	111	}
	112
	113	//_____________________________________________________________________________
	114	AliTRDReconstructor::~AliTRDReconstructor()
	115	{
	116	//
	117	// Destructor
	118	//
	119
	120	if(fgClusters) {
	121	fgClusters->Delete();
	122	delete fgClusters;
	123	fgClusters = NULL;
	124	}
	125	if(fgTracklets) {
	126	fgTracklets->Delete();
	127	delete fgTracklets;
	128	fgTracklets = NULL;
	129	}
	130	if(fgTracks) {
	131	fgTracks->Delete();
	132	delete fgTracks;
	133	fgTracks = NULL;
	134	}
	135	if(fSteerParam&kOwner){
	136	for(Int_t itask = 0; itask < AliTRDrecoParam::kTRDreconstructionTasks; itask++)
	137	if(fDebugStream[itask]) delete fDebugStream[itask];
	138	}
	139	if(fClusterizer){
	140	delete fClusterizer;
	141	fClusterizer = NULL;
	142	}
	143	}
	144
	145
	146	//_____________________________________________________________________________
	147	void AliTRDReconstructor::Init(){
	148	//
	149	// Init Options
	150	//
	151	SetOption(GetOption());
	152	Options(fSteerParam);
	153
	154	if(!fClusterizer){
	155	fClusterizer = new AliTRDclusterizer(fgTaskNames[AliTRDrecoParam::kClusterizer], fgTaskNames[AliTRDrecoParam::kClusterizer]);
	156	fClusterizer->SetReconstructor(this);
	157	}
	158
	159	// Make Debug Streams when Debug Streaming
	160	if(IsDebugStreaming()){
	161	for(Int_t task = 0; task < AliTRDrecoParam::kTRDreconstructionTasks; task++){
	162	TDirectory *savedir = gDirectory;
	163	fDebugStream[task] = new TTreeSRedirector(Form("TRD.Debug%s.root", fgTaskNames[task]));
	164	savedir->cd();
	165	SETFLG(fSteerParam, kOwner);
	166	}
	167	}
	168	}
	169
	170	//_____________________________________________________________________________
	171	void AliTRDReconstructor::ConvertDigits(AliRawReader *rawReader
	172	, TTree *digitsTree) const
	173	{
	174	//
	175	// Convert raw data digits into digit objects in a root tree
	176	//
	177
	178	//AliInfo("Convert raw data digits into digit objects [RawReader -> Digit TTree]");
	179
	180	AliTRDrawData rawData;
	181	rawReader->Reset();
	182	rawReader->Select("TRD");
	183	AliTRDdigitsManager *manager = rawData.Raw2Digits(rawReader);
	184	manager->MakeBranch(digitsTree);
	185	manager->WriteDigits();
	186	delete manager;
	187
	188	// take over ownership of online tracklets
	189	fgTracklets = rawData.TrackletsArray();
	190	rawData.SetTrackletsOwner(0x0);
	191
	192	// take over GTU tracks
	193	fgTracks = rawData.TracksArray();
	194	rawData.SetTracksOwner(0x0);
	195
	196	for (Int_t iSector = 0; iSector < 18; iSector++) {
	197	fgTriggerFlags.SetFlags(iSector, rawData.GetTriggerFlags(iSector));
	198	}
	199	}
	200
	201	//_____________________________________________________________________________
	202	void AliTRDReconstructor::Reconstruct(AliRawReader *rawReader
	203	, TTree *clusterTree) const
	204	{
	205	//
	206	// Reconstruct clusters
	207	//
	208
	209	//AliInfo("Reconstruct TRD clusters from RAW data [RawReader -> Cluster TTree]");
	210
	211
	212	rawReader->Reset();
	213	rawReader->Select("TRD");
	214
	215	if(!fClusterizer){
	216	AliFatal("Clusterizer not available!");
	217	return;
	218	}
	219
	220	fClusterizer->ResetRecPoints();
	221
	222	fClusterizer->OpenOutput(clusterTree);
	223	fClusterizer->SetUseLabels(kFALSE);
	224	fClusterizer->SetStoreRawSignals(kTRUE);
	225	fClusterizer->Raw2ClustersChamber(rawReader);
	226
	227	fgNTimeBins = fClusterizer->GetNTimeBins();
	228
	229	// take over ownership of online tracklets
	230	fgTracklets = fClusterizer->TrackletsArray();
	231	fClusterizer->SetTrackletsOwner(kFALSE);
	232
	233	// take over GTU tracks
	234	fgTracks = fClusterizer->TracksArray();
	235	fClusterizer->SetTracksOwner(kFALSE);
	236
	237	for (Int_t iSector = 0; iSector < 18; iSector++) {
	238	fgTriggerFlags.SetFlags(iSector, fClusterizer->GetTriggerFlags(iSector));
	239	}
	240
	241	if(IsWritingClusters()) return;
	242
	243	// take over ownership of clusters
	244	fgClusters = fClusterizer->RecPoints();
	245	fClusterizer->SetClustersOwner(kFALSE);
	246	}
	247
	248	//_____________________________________________________________________________
	249	void AliTRDReconstructor::Reconstruct(TTree *digitsTree
	250	, TTree *clusterTree) const
	251	{
	252	//
	253	// Reconstruct clusters
	254	//
	255
	256	//AliInfo("Reconstruct TRD clusters from Digits [Digit TTree -> Cluster TTree]");
	257
	258	AliTRDclusterizer clusterer(fgTaskNames[AliTRDrecoParam::kClusterizer], fgTaskNames[AliTRDrecoParam::kClusterizer]);
	259	clusterer.SetReconstructor(this);
	260	clusterer.SetUseLabels(kTRUE);
	261	clusterer.SetStoreRawSignals(kTRUE);
	262	clusterer.OpenOutput(clusterTree);
	263	clusterer.ReadDigits(digitsTree);
	264	clusterer.MakeClusters();
	265
	266	// read tracklets and tracks if not done during reading of raw data
	267	if (!fgTracklets) {
	268	clusterer.ReadTracklets();
	269	fgTracklets = clusterer.TrackletsArray();
	270	clusterer.SetTrackletsOwner(kFALSE);
	271	}
	272	if (!fgTracks) {
	273	clusterer.ReadTracks();
	274	fgTracks = clusterer.TracksArray();
	275	clusterer.SetTracksOwner(kFALSE);
	276	}
	277
	278	fgNTimeBins = clusterer.GetNTimeBins();
	279
	280	if(IsWritingClusters()) return;
	281
	282	// take over ownership of clusters
	283	fgClusters = clusterer.RecPoints();
	284	clusterer.SetClustersOwner(kFALSE);
	285	}
	286
	287	//_____________________________________________________________________________
	288	AliTracker *AliTRDReconstructor::CreateTracker() const
	289	{
	290	//
	291	// Create a TRD tracker
	292	//
	293
	294	//return new AliTRDtracker(NULL);
	295	AliTRDtrackerV1 *tracker = new AliTRDtrackerV1();
	296	tracker->SetReconstructor(this);
	297	return tracker;
	298
	299	}
	300
	301	//_____________________________________________________________________________
	302	void AliTRDReconstructor::FillESD(TTree* /digitsTree/
	303	, TTree* /clusterTree/
	304	, AliESDEvent* esd) const
	305	{
	306	//
	307	// Fill ESD
	308	//
	309
	310	// ----- filling tracklets -----
	311	Int_t trackletIndex[1080] = { 0 };
	312	AliDebug(1, Form("Filling tracklets from %p (%i)",
	313	fgTracklets, fgTracklets ? fgTracklets->GetEntriesFast() : 0));
	314	if (fgTracklets) {
	315	Int_t nTracklets = fgTracklets->GetEntriesFast();
	316
	317	Int_t lastHC = -1;
	318	for (Int_t iTracklet = 0; iTracklet < nTracklets; iTracklet++) {
	319	AliTRDtrackletBase trkl = (AliTRDtrackletBase) ((*fgTracklets)[iTracklet]);
	320	Int_t hc = trkl->GetHCId();
	321	// hc += trkl->GetY() > 0 ? 1 : 0;
	322	if ((hc < 0) \|\| (hc >= 1080)) {
	323	AliError(Form("HC for tracklet: 0x%08x out of range: %i", trkl->GetTrackletWord(), trkl->GetHCId()));
	324	continue;
	325	}
	326	AliDebug(5, Form("hc: %4i : 0x%08x z: %2i", hc, trkl->GetTrackletWord(), trkl->GetZbin()));
	327	if (hc != lastHC) {
	328	AliDebug(2, Form("set tracklet index for HC %i to %i", hc, iTracklet));
	329	trackletIndex[hc] = iTracklet + 1;
	330	lastHC = hc;
	331	}
	332	}
	333
	334	for (Int_t iDet = 0; iDet < 540; iDet++) {
	335	Int_t trklIndexA = trackletIndex[2*iDet + 0] - 1;
	336	Int_t trklIndexB = trackletIndex[2*iDet + 1] - 1;
	337	Int_t trklIndex = esd->GetNumberOfTrdTracklets();
	338	AliTRDtrackletBase trklA = trklIndexA > -1 ? (AliTRDtrackletBase) ((*fgTracklets)[trklIndexA]) : 0x0;
	339	AliTRDtrackletBase trklB = trklIndexB > -1 ? (AliTRDtrackletBase) ((*fgTracklets)[trklIndexB]) : 0x0;
	340	while (trklA != 0x0 \|\| trklB != 0x0) {
	341	AliDebug(5, Form("det %i - A: %i/%i -> %p, B: %i/%i -> %p",
	342	iDet, trklIndexA, nTracklets, trklA, trklIndexB, nTracklets, trklB));
	343	if (trklA == 0x0) {
	344	AliESDTrdTracklet esdTracklet(trklB->GetTrackletWord(), trklB->GetHCId());
	345	esd->AddTrdTracklet(&esdTracklet);
	346	trklIndexB++;
	347	trklB = trklIndexB < nTracklets ? (AliTRDtrackletBase) ((fgTracklets)[trklIndexB]) : 0x0;
	348	if (trklB && trklB->GetHCId() != 2*iDet + 1)
	349	trklB = 0x0;
	350	}
	351	else if (trklB == 0x0) {
	352	AliESDTrdTracklet esdTracklet(trklA->GetTrackletWord(), trklA->GetHCId());
	353	esd->AddTrdTracklet(&esdTracklet);
	354	trklIndexA++;
	355	trklA = trklIndexA < nTracklets ? (AliTRDtrackletBase) ((fgTracklets)[trklIndexA]) : 0x0;
	356	if (trklA && trklA->GetHCId() != 2*iDet)
	357	trklA = 0x0;
	358	}
	359	else {
	360	if ((trklA->GetZbin() < trklB->GetZbin()) \|\|
	361	((trklA->GetZbin() == trklB->GetZbin()) && (trklA->GetYbin() < trklB->GetYbin()))) {
	362	AliESDTrdTracklet esdTracklet(trklA->GetTrackletWord(), trklA->GetHCId());
	363	esd->AddTrdTracklet(&esdTracklet);
	364	trklIndexA++;
	365	trklA = trklIndexA < nTracklets ? (AliTRDtrackletBase) ((fgTracklets)[trklIndexA]) : 0x0;
	366	if (trklA && trklA->GetHCId() != 2*iDet)
	367	trklA = 0x0;
	368	}
	369	else {
	370	AliESDTrdTracklet esdTracklet(trklB->GetTrackletWord(), trklB->GetHCId());
	371	esd->AddTrdTracklet(&esdTracklet);
	372	trklIndexB++;
	373	trklB = trklIndexB < nTracklets ? (AliTRDtrackletBase) ((fgTracklets)[trklIndexB]) : 0x0;
	374	if (trklB && trklB->GetHCId() != 2*iDet + 1)
	375	trklB = 0x0;
	376	}
	377	}
	378	}
	379	// updating tracklet indices as in ESD
	380	if (esd->GetNumberOfTrdTracklets() != trklIndex) {
	381	trackletIndex[2iDet + 0] = trackletIndex[2iDet + 1] = trklIndex;
	382	}
	383	else
	384	trackletIndex[2iDet + 0] = trackletIndex[2iDet + 1] = -1;
	385	}
	386	}
	387
	388	// ----- filling GTU tracks -----
	389	AliDebug(1, Form("Now filling ESD with GTU tracks from %p (%i)",
	390	fgTracks, fgTracks ? fgTracks->GetEntriesFast() : 0));
	391	if (fgTracks) {
	392	for (Int_t iTrack = 0; iTrack < fgTracks->GetEntriesFast(); iTrack++) {
	393	AliESDTrdTrack trdTrack = (AliESDTrdTrack) ((*fgTracks)[iTrack]);
	394
	395	UInt_t mask = trdTrack->GetLayerMask();
	396	UInt_t stack = trdTrack->GetStack();
	397
	398	for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
	399	if (mask & (1 << iLayer)) {
	400
	401	Int_t det = trdTrack->GetSector()30 + stack6 + iLayer;
	402	Int_t idx = trdTrack->GetTrackletIndex(iLayer);
	403
	404	if ((det < 0) \|\| (det > 539)) {
	405	AliError(Form("Invalid detector no. from track: %i", 2*det));
	406	continue;
	407	}
	408	if (trackletIndex[2*det] >= 0) {
	409	if ((trackletIndex[2*det] + idx > -1) &&
	410	(trackletIndex[2*det] + idx < esd->GetNumberOfTrdTracklets())) {
	411	AliESDTrdTracklet trkl = esd->GetTrdTracklet(trackletIndex[2det] + idx);
	412	if (trkl) {
	413	AliDebug(5, Form("adding tracklet: 0x%08x", trkl->GetTrackletWord()));
	414	trdTrack->AddTrackletReference(trkl, iLayer);
	415	}
	416	}
	417	}
	418	}
	419	}
	420	// only add the track when it's complete (including tracklet references)
	421	esd->AddTrdTrack(trdTrack);
	422	}
	423	}
	424
	425	esd->SetTrdTrigger(&fgTriggerFlags);
	426
	427	// clearing variables for next event
	428	fgTracklets = 0x0;
	429	fgTracks = 0x0;
	430	}
	431
	432	//_____________________________________________________________________________
	433	void AliTRDReconstructor::SetOption(Option_t *opt)
	434	{
	435	//
	436	// Read option string into the steer param.
	437	//
	438	// The following string options are available during reconstruction.
	439	// In square brackets the default values are given.
	440	// "dc" : digits conversion [false]
	441	// "cw" : write clusters [true]
	442	// "tw" : write online tracklets [false]
	443	// "sa" : track seeding (stand alone tracking) [true]
	444	// "hlt" : HLT reconstruction [false]
	445	// "tp" : also use online tracklets for reconstruction [false]
	446	// "deb" : Write debug stream [false]
	447	// "cc" : Cluster radial correction during reconstruction [false]
	448	//
	449	// To check the actual options used during reconstruction include the following line in your rec.C script
	450	// AliLog::SetClassDebugLevel("AliTRDReconstructor", 1);
	451
	452	AliReconstructor::SetOption(opt);
	453
	454	TString s(opt);
	455	TObjArray *opar = s.Tokenize(",");
	456	for(Int_t ipar=0; ipar<opar->GetEntriesFast(); ipar++){
	457	Bool_t processed = kFALSE;
	458	TString sopt(((TObjString)(opar)[ipar])->String());
	459	for(Int_t iopt=0; iopt<kNsteer; iopt++){
	460	if(!sopt.Contains(fgSteerFlags[iopt])) continue;
	461	SETFLG(fSteerParam, BIT(iopt));
	462	if(sopt.Contains("!")) CLRFLG(fSteerParam, BIT(iopt));
	463	processed = kTRUE;
	464	break;
	465	}
	466	if(processed) continue;
	467
	468	AliWarning(Form("Unknown option flag %s.", sopt.Data()));
	469	}
	470	}
	471
	472	//_____________________________________________________________________________
	473	void AliTRDReconstructor::Options(UInt_t steer)
	474	{
	475	//
	476	// Print the options
	477	//
	478
	479	for(Int_t iopt=0; iopt<kNsteer; iopt++){
	480	AliDebugGeneral("AliTRDReconstructor", 1, Form(" %s[%s]%s", fgSteerNames[iopt], fgSteerFlags[iopt], steer ?(((steer>>iopt)&1)?" : ON":" : OFF"):""));
	481	}
	482	}
	483