[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"
#include "AliTRDtrackletMCM.h"
#include "AliTRDonlineTrackMatching.h"

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

ClassImp(AliTRDReconstructor)

AliESDTrdTrigger AliTRDReconstructor::fgTriggerFlags;
AliTRDonlineTrackMatching AliTRDReconstructor::fgOnlineTrackMatcher;
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(fClusterizer){
    delete fClusterizer;
    fClusterizer = NULL;
  }
  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];
  }
}


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

  if(!fClusterizer){
    fClusterizer = new AliTRDclusterizer(fgTaskNames[AliTRDrecoParam::kClusterizer], fgTaskNames[AliTRDrecoParam::kClusterizer]);
    fClusterizer->SetReconstructor(this);
    AliInfo(Form("Build TRD clusterizer[%p]", (void*)fClusterizer));
  }
  
  // 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
  //

  AliDebug(1, "Convert raw data digits into digit objects [RawReader -> Digit TTree]");
  AliDebug(2, Form("clusters[%p] tracklets[%p] tracks[%p]", (void*)fgClusters, (void*)fgTracklets, (void*)fgTracks));

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

  AliTRDrawData rawData;

  AliTRDdigitsManager *manager = rawData.Raw2Digits(rawReader);
  manager->MakeBranch(digitsTree);
  manager->WriteDigits();
  delete manager;

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

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

  AliDebug(1, "Reconstruct TRD clusters from RAW data [RawReader -> Cluster TTree]");
  AliDebug(2, Form("clusters[%p] tracklets[%p] tracks[%p]", (void*)fgClusters, (void*)fgTracklets, (void*)fgTracks));
  if(!fClusterizer){
    AliFatal("Clusterizer not available!");
    return;
  }
  rawReader->Reset();
  rawReader->Select("TRD");
  ResetContainers();
  fClusterizer->OpenOutput(clusterTree);
  fClusterizer->SetUseLabels(kFALSE);
  fClusterizer->SetStoreRawSignals(kTRUE);
  fClusterizer->ResetRecPoints();
  fClusterizer->Raw2ClustersChamber(rawReader);
  fgNTimeBins = fClusterizer->GetNTimeBins();
  for (Int_t iSector = 0; iSector < 18; iSector++) fgTriggerFlags.SetFlags(iSector, fClusterizer->GetTriggerFlags(iSector));
}

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

  AliDebug(1, "Reconstruct TRD clusters from Digits [Digit TTree -> Cluster TTree]");
  AliDebug(2, Form("Start :: clusters[%p] tracklets[%p] tracks[%p]", (void*)fgClusters, (void*)fgTracklets, (void*)fgTracks));
  if(!fClusterizer){
    AliFatal("Clusterizer not available!");
    return;
  }

  ResetContainers();
  AliTRDclusterizer clusterizer(fgTaskNames[AliTRDrecoParam::kClusterizer], fgTaskNames[AliTRDrecoParam::kClusterizer]);
  clusterizer.SetReconstructor(this);
  clusterizer.SetUseLabels(kTRUE);
  clusterizer.SetStoreRawSignals(kTRUE);
  clusterizer.OpenOutput(clusterTree);
  clusterizer.ReadDigits(digitsTree);
  clusterizer.ReadTracklets();
  clusterizer.ReadTracks();
  clusterizer.MakeClusters();
  fgNTimeBins = clusterizer.GetNTimeBins();
}

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

  //return new AliTRDtracker(NULL);
  AliTRDtrackerV1 *tracker = new AliTRDtrackerV1();
  tracker->SetReconstructor(this);
  AliInfo(Form("Build TRD tracker[%p]", (void*)tracker));
  return tracker;

}

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

  // ----- filling tracklets -----
  AliDebug(1, Form("Loading onl.tracklets(%i) to ESD", fgTracklets ? fgTracklets->GetEntriesFast() : 0));
  Int_t trackletIndex[1080] = { 0 };
  TList trklList;
  AliTRDrawStream::SortTracklets(fgTracklets, trklList, trackletIndex);
  TIter trackletIter(&trklList);
  while (AliTRDtrackletBase* tracklet = (AliTRDtrackletBase*) trackletIter()) {
    Int_t label = -2; // mark raw tracklets with label -2
    if (AliTRDtrackletMCM *trklMCM = dynamic_cast<AliTRDtrackletMCM*> (tracklet)) label = trklMCM->GetLabel();
    esd->AddTrdTracklet(new AliESDTrdTracklet(tracklet->GetTrackletWord(), tracklet->GetHCId(), label));
  }

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

      UInt_t stack = trdTrack->GetStack();

      Int_t refIndex[6];
      AliTRDrawStream::AssignTracklets(trdTrack, trackletIndex, refIndex);

      for (Int_t iLayer = 0; iLayer < 6; ++iLayer) {
        Int_t det = trdTrack->GetSector()*30 + stack*6 + iLayer;
        AliESDTrdTracklet *trkl = refIndex[iLayer] > -1 ? esd->GetTrdTracklet(refIndex[iLayer]) : 0x0;
        if (trkl) {
          AliDebug(5, Form("adding tracklet with index %i: 0x%08x",
              refIndex[iLayer], trkl->GetTrackletWord()));
          if (trkl->GetDetector() != det)
            AliError(Form("inconsistent assignment of tracklet 0x%08x in det %i to track in %i",
              trkl->GetTrackletWord(), trkl->GetDetector(), det));
          trdTrack->AddTrackletReference(trkl, iLayer);
        }
      }
      // only add the track when it's complete (including tracklet references)
      esd->AddTrdTrack(trdTrack);
    }
  }
  esd->SetTrdTrigger(&fgTriggerFlags);

  // ----- matching GTU tracks to global tracks -----
  AliDebug(1, Form("TRD track matching with %i ESD, %i TRD tracks",
		   esd->GetNumberOfTracks(), esd->GetNumberOfTrdTracks()));
  fgOnlineTrackMatcher.ProcessEvent(esd);
}

//_____________________________________________________________________________
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()));
  }
  opar->Delete();
  delete opar;
}

//_____________________________________________________________________________
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"):""));
  }
}


//_____________________________________________________________________________
TClonesArray* AliTRDReconstructor::GetClusters()
{
// Build/ Retrieve cluster array
  if(!fgClusters){
    fgClusters = new TClonesArray("AliTRDcluster", Int_t(GetRecoParam()->GetNClusters()));
    fgClusters->SetOwner();
    AliInfoGeneral("AliTRDReconstructor", Form("Allocate cluster array @ %p", (void*)fgClusters));
  }
  return fgClusters;
}

//_____________________________________________________________________________
TClonesArray* AliTRDReconstructor::GetTracklets(const char *trkltype)
{
// Build/ Retrieve online tracklets array

  if (trkltype && strlen(trkltype) > 0) {
    if(fgTracklets && (TClass::GetClass(trkltype) != fgTracklets->GetClass())){
      fgTracklets->Delete();
      delete fgTracklets;
    }
    if (!fgTracklets) {
      fgTracklets = new TClonesArray(trkltype, 200);
      fgTracklets->SetOwner(kTRUE);
      AliInfoGeneral("AliTRDReconstructor", Form("Allocate online tracklets[%s] array @ %p", trkltype, (void*)fgTracklets));
    }
  }
  return fgTracklets;
}

//_____________________________________________________________________________
TClonesArray* AliTRDReconstructor::GetTracks()
{
// Build/ Retrieve cluster array
  if(!fgTracks){
    fgTracks = new TClonesArray("AliESDTrdTrack", 100);
    fgTracks->SetOwner();
    AliInfoGeneral("AliTRDReconstructor", Form("Allocate online tracks array @ %p", (void*)fgTracks));
  }
  return fgTracks;
}

//_____________________________________________________________________________
void AliTRDReconstructor::ResetContainers() const
{
// prepare data containers for a new event

  if(fgClusters){
    AliDebug(1, Form("Removing %5d clusters @ %p", fgClusters->GetEntriesFast(), (void*)fgClusters));
    fgClusters->Clear();
  }
  if(fgTracklets){
    AliDebug(1, Form("Removing %3d online tracklets @ %p", fgTracklets->GetEntriesFast(), (void*)fgTracklets));
    fgTracklets->Clear();
  }
  if(fgTracks){
    AliDebug(1, Form("Removing %3d online tracks @ %p", fgTracks->GetEntriesFast(), (void*)fgTracks));
    fgTracks->Clear();
  }
}
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	#include "AliTRDtrackletMCM.h"
	48	#include "AliTRDonlineTrackMatching.h"
	49
	50	#define SETFLG(n,f) ((n) \|= f)
	51	#define CLRFLG(n,f) ((n) &= ~f)
	52
	53	ClassImp(AliTRDReconstructor)
	54
	55	AliESDTrdTrigger AliTRDReconstructor::fgTriggerFlags;
	56	AliTRDonlineTrackMatching AliTRDReconstructor::fgOnlineTrackMatcher;
	57	TClonesArray *AliTRDReconstructor::fgClusters = NULL;
	58	TClonesArray *AliTRDReconstructor::fgTracklets = NULL;
	59	TClonesArray *AliTRDReconstructor::fgTracks = NULL;
	60	Char_t const * AliTRDReconstructor::fgSteerNames[kNsteer] = {
	61	"DigitsConversion "
	62	,"Write Clusters "
	63	,"Write Online Tracklets "
	64	,"Stand Alone Tracking "
	65	,"HLT Mode "
	66	,"Process Online Trklts "
	67	,"Debug Streaming "
	68	,"Cl. Radial Correction "
	69	};
	70	Char_t const * AliTRDReconstructor::fgSteerFlags[kNsteer] = {
	71	"dc"// digits conversion [false]
	72	,"cw"// write clusters [true]
	73	,"tw"// write online tracklets [false]
	74	,"sa"// track seeding (stand alone tracking) [true]
	75	,"hlt"// HLT reconstruction [false]
	76	,"tp"// also use online tracklets for reconstruction [false]
	77	,"deb"// Write debug stream [false]
	78	,"cc" // Cluster radial correction during reconstruction [false]
	79	};
	80	Char_t const * AliTRDReconstructor::fgTaskNames[AliTRDrecoParam::kTRDreconstructionTasks] = {
	81	"Clusterizer"
	82	,"Tracker"
	83	,"PID"
	84	};
	85	Char_t const * AliTRDReconstructor::fgTaskFlags[AliTRDrecoParam::kTRDreconstructionTasks] = {
	86	"cl"
	87	,"tr"
	88	,"pd"
	89	};
	90	Int_t AliTRDReconstructor::fgNTimeBins = -1;
	91	const Float_t AliTRDReconstructor::fgkMinClustersInTrack = 0.5; //
	92	const Float_t AliTRDReconstructor::fgkLabelFraction = 0.8; //
	93	const Double_t AliTRDReconstructor::fgkMaxChi2 = 12.0; //
	94	const Double_t AliTRDReconstructor::fgkMaxSnp = 0.95; // Maximum local sine of the azimuthal angle
	95	const Double_t AliTRDReconstructor::fgkMaxStep = 2.0; // Maximal step size in propagation
	96	const Double_t AliTRDReconstructor::fgkEpsilon = 1.e-5; // Precision of radial coordinate
	97
	98	//_____________________________________________________________________________
	99	AliTRDReconstructor::AliTRDReconstructor()
	100	:AliReconstructor()
	101	,fSteerParam(0)
	102	,fClusterizer(NULL)
	103	{
	104	// setting default "ON" steering parameters
	105	// owner of debug streamers
	106	SETFLG(fSteerParam, kOwner);
	107	// write clusters [cw]
	108	SETFLG(fSteerParam, kWriteClusters);
	109	// track seeding (stand alone tracking) [sa]
	110	//SETFLG(fSteerParam, kSeeding);
	111	// Cluster radial correction during reconstruction [cc]
	112	//SETFLG(fSteerParam, kClRadialCorr);
	113	memset(fDebugStream, 0, sizeof(TTreeSRedirector ) AliTRDrecoParam::kTRDreconstructionTasks);
	114	}
	115
	116	//_____________________________________________________________________________
	117	AliTRDReconstructor::~AliTRDReconstructor()
	118	{
	119	//
	120	// Destructor
	121	//
	122
	123	if(fClusterizer){
	124	delete fClusterizer;
	125	fClusterizer = NULL;
	126	}
	127	if(fgClusters) {
	128	fgClusters->Delete();
	129	delete fgClusters;
	130	fgClusters = NULL;
	131	}
	132	if(fgTracklets) {
	133	fgTracklets->Delete();
	134	delete fgTracklets;
	135	fgTracklets = NULL;
	136	}
	137	if(fgTracks) {
	138	fgTracks->Delete();
	139	delete fgTracks;
	140	fgTracks = NULL;
	141	}
	142	if(fSteerParam&kOwner){
	143	for(Int_t itask = 0; itask < AliTRDrecoParam::kTRDreconstructionTasks; itask++)
	144	if(fDebugStream[itask]) delete fDebugStream[itask];
	145	}
	146	}
	147
	148
	149	//_____________________________________________________________________________
	150	void AliTRDReconstructor::Init(){
	151	//
	152	// Init Options
	153	//
	154	SetOption(GetOption());
	155	Options(fSteerParam);
	156
	157	if(!fClusterizer){
	158	fClusterizer = new AliTRDclusterizer(fgTaskNames[AliTRDrecoParam::kClusterizer], fgTaskNames[AliTRDrecoParam::kClusterizer]);
	159	fClusterizer->SetReconstructor(this);
	160	AliInfo(Form("Build TRD clusterizer[%p]", (void*)fClusterizer));
	161	}
	162
	163	// Make Debug Streams when Debug Streaming
	164	if(IsDebugStreaming()){
	165	for(Int_t task = 0; task < AliTRDrecoParam::kTRDreconstructionTasks; task++){
	166	TDirectory *savedir = gDirectory;
	167	fDebugStream[task] = new TTreeSRedirector(Form("TRD.Debug%s.root", fgTaskNames[task]));
	168	savedir->cd();
	169	SETFLG(fSteerParam, kOwner);
	170	}
	171	}
	172	}
	173
	174	//_____________________________________________________________________________
	175	void AliTRDReconstructor::ConvertDigits(AliRawReader *rawReader
	176	, TTree *digitsTree) const
	177	{
	178	//
	179	// Convert raw data digits into digit objects in a root tree
	180	//
	181
	182	AliDebug(1, "Convert raw data digits into digit objects [RawReader -> Digit TTree]");
	183	AliDebug(2, Form("clusters[%p] tracklets[%p] tracks[%p]", (void)fgClusters, (void)fgTracklets, (void*)fgTracks));
	184
	185	rawReader->Reset();
	186	rawReader->Select("TRD");
	187	ResetContainers();
	188
	189	AliTRDrawData rawData;
	190
	191	AliTRDdigitsManager *manager = rawData.Raw2Digits(rawReader);
	192	manager->MakeBranch(digitsTree);
	193	manager->WriteDigits();
	194	delete manager;
	195
	196	for (Int_t iSector = 0; iSector < 18; iSector++) fgTriggerFlags.SetFlags(iSector, rawData.GetTriggerFlags(iSector));
	197	}
	198
	199	//_____________________________________________________________________________
	200	void AliTRDReconstructor::Reconstruct(AliRawReader *rawReader
	201	, TTree *clusterTree) const
	202	{
	203	//
	204	// Reconstruct clusters
	205	//
	206
	207	AliDebug(1, "Reconstruct TRD clusters from RAW data [RawReader -> Cluster TTree]");
	208	AliDebug(2, Form("clusters[%p] tracklets[%p] tracks[%p]", (void)fgClusters, (void)fgTracklets, (void*)fgTracks));
	209	if(!fClusterizer){
	210	AliFatal("Clusterizer not available!");
	211	return;
	212	}
	213	rawReader->Reset();
	214	rawReader->Select("TRD");
	215	ResetContainers();
	216	fClusterizer->OpenOutput(clusterTree);
	217	fClusterizer->SetUseLabels(kFALSE);
	218	fClusterizer->SetStoreRawSignals(kTRUE);
	219	fClusterizer->ResetRecPoints();
	220	fClusterizer->Raw2ClustersChamber(rawReader);
	221	fgNTimeBins = fClusterizer->GetNTimeBins();
	222	for (Int_t iSector = 0; iSector < 18; iSector++) fgTriggerFlags.SetFlags(iSector, fClusterizer->GetTriggerFlags(iSector));
	223	}
	224
	225	//_____________________________________________________________________________
	226	void AliTRDReconstructor::Reconstruct(TTree *digitsTree
	227	, TTree *clusterTree) const
	228	{
	229	//
	230	// Reconstruct clusters
	231	//
	232
	233	AliDebug(1, "Reconstruct TRD clusters from Digits [Digit TTree -> Cluster TTree]");
	234	AliDebug(2, Form("Start :: clusters[%p] tracklets[%p] tracks[%p]", (void)fgClusters, (void)fgTracklets, (void*)fgTracks));
	235	if(!fClusterizer){
	236	AliFatal("Clusterizer not available!");
	237	return;
	238	}
	239
	240	ResetContainers();
	241	AliTRDclusterizer clusterizer(fgTaskNames[AliTRDrecoParam::kClusterizer], fgTaskNames[AliTRDrecoParam::kClusterizer]);
	242	clusterizer.SetReconstructor(this);
	243	clusterizer.SetUseLabels(kTRUE);
	244	clusterizer.SetStoreRawSignals(kTRUE);
	245	clusterizer.OpenOutput(clusterTree);
	246	clusterizer.ReadDigits(digitsTree);
	247	clusterizer.ReadTracklets();
	248	clusterizer.ReadTracks();
	249	clusterizer.MakeClusters();
	250	fgNTimeBins = clusterizer.GetNTimeBins();
	251	}
	252
	253	//_____________________________________________________________________________
	254	AliTracker *AliTRDReconstructor::CreateTracker() const
	255	{
	256	//
	257	// Create a TRD tracker
	258	//
	259
	260	//return new AliTRDtracker(NULL);
	261	AliTRDtrackerV1 *tracker = new AliTRDtrackerV1();
	262	tracker->SetReconstructor(this);
	263	AliInfo(Form("Build TRD tracker[%p]", (void*)tracker));
	264	return tracker;
	265
	266	}
	267
	268	//_____________________________________________________________________________
	269	void AliTRDReconstructor::FillESD(TTree* /digitsTree/
	270	, TTree* /clusterTree/
	271	, AliESDEvent* esd) const
	272	{
	273	//
	274	// Fill ESD
	275	//
	276
	277	// ----- filling tracklets -----
	278	AliDebug(1, Form("Loading onl.tracklets(%i) to ESD", fgTracklets ? fgTracklets->GetEntriesFast() : 0));
	279	Int_t trackletIndex[1080] = { 0 };
	280	TList trklList;
	281	AliTRDrawStream::SortTracklets(fgTracklets, trklList, trackletIndex);
	282	TIter trackletIter(&trklList);
	283	while (AliTRDtrackletBase* tracklet = (AliTRDtrackletBase*) trackletIter()) {
	284	Int_t label = -2; // mark raw tracklets with label -2
	285	if (AliTRDtrackletMCM trklMCM = dynamic_cast<AliTRDtrackletMCM> (tracklet)) label = trklMCM->GetLabel();
	286	esd->AddTrdTracklet(new AliESDTrdTracklet(tracklet->GetTrackletWord(), tracklet->GetHCId(), label));
	287	}
	288
	289	// ----- filling GTU tracks -----
	290	AliDebug(1, Form("Loading gtu.tracks(%i) to ESD", fgTracks ? fgTracks->GetEntriesFast() : 0));
	291	if (fgTracks) {
	292	for (Int_t iTrack = 0; iTrack < fgTracks->GetEntriesFast(); iTrack++) {
	293	AliESDTrdTrack trdTrack = (AliESDTrdTrack) ((*fgTracks)[iTrack]);
	294
	295	UInt_t stack = trdTrack->GetStack();
	296
	297	Int_t refIndex[6];
	298	AliTRDrawStream::AssignTracklets(trdTrack, trackletIndex, refIndex);
	299
	300	for (Int_t iLayer = 0; iLayer < 6; ++iLayer) {
	301	Int_t det = trdTrack->GetSector()30 + stack6 + iLayer;
	302	AliESDTrdTracklet *trkl = refIndex[iLayer] > -1 ? esd->GetTrdTracklet(refIndex[iLayer]) : 0x0;
	303	if (trkl) {
	304	AliDebug(5, Form("adding tracklet with index %i: 0x%08x",
	305	refIndex[iLayer], trkl->GetTrackletWord()));
	306	if (trkl->GetDetector() != det)
	307	AliError(Form("inconsistent assignment of tracklet 0x%08x in det %i to track in %i",
	308	trkl->GetTrackletWord(), trkl->GetDetector(), det));
	309	trdTrack->AddTrackletReference(trkl, iLayer);
	310	}
	311	}
	312	// only add the track when it's complete (including tracklet references)
	313	esd->AddTrdTrack(trdTrack);
	314	}
	315	}
	316	esd->SetTrdTrigger(&fgTriggerFlags);
	317
	318	// ----- matching GTU tracks to global tracks -----
	319	AliDebug(1, Form("TRD track matching with %i ESD, %i TRD tracks",
	320	esd->GetNumberOfTracks(), esd->GetNumberOfTrdTracks()));
	321	fgOnlineTrackMatcher.ProcessEvent(esd);
	322	}
	323
	324	//_____________________________________________________________________________
	325	void AliTRDReconstructor::SetOption(Option_t *opt)
	326	{
	327	//
	328	// Read option string into the steer param.
	329	//
	330	// The following string options are available during reconstruction.
	331	// In square brackets the default values are given.
	332	// "dc" : digits conversion [false]
	333	// "cw" : write clusters [true]
	334	// "tw" : write online tracklets [false]
	335	// "sa" : track seeding (stand alone tracking) [true]
	336	// "hlt" : HLT reconstruction [false]
	337	// "tp" : also use online tracklets for reconstruction [false]
	338	// "deb" : Write debug stream [false]
	339	// "cc" : Cluster radial correction during reconstruction [false]
	340	//
	341	// To check the actual options used during reconstruction include the following line in your rec.C script
	342	// AliLog::SetClassDebugLevel("AliTRDReconstructor", 1);
	343
	344	AliReconstructor::SetOption(opt);
	345
	346	TString s(opt);
	347	TObjArray *opar = s.Tokenize(",");
	348	for(Int_t ipar=0; ipar<opar->GetEntriesFast(); ipar++){
	349	Bool_t processed = kFALSE;
	350	TString sopt(((TObjString)(opar)[ipar])->String());
	351	for(Int_t iopt=0; iopt<kNsteer; iopt++){
	352	if(!sopt.Contains(fgSteerFlags[iopt])) continue;
	353	SETFLG(fSteerParam, BIT(iopt));
	354	if(sopt.Contains("!")) CLRFLG(fSteerParam, BIT(iopt));
	355	processed = kTRUE;
	356	break;
	357	}
	358	if(processed) continue;
	359
	360	AliWarning(Form("Unknown option flag %s.", sopt.Data()));
	361	}
	362	opar->Delete();
	363	delete opar;
	364	}
	365
	366	//_____________________________________________________________________________
	367	void AliTRDReconstructor::Options(UInt_t steer)
	368	{
	369	//
	370	// Print the options
	371	//
	372
	373	for(Int_t iopt=0; iopt<kNsteer; iopt++){
	374	AliDebugGeneral("AliTRDReconstructor", 1, Form(" %s[%s]%s", fgSteerNames[iopt], fgSteerFlags[iopt], steer ?(((steer>>iopt)&1)?" : ON":" : OFF"):""));
	375	}
	376	}
	377
	378
	379	//_____________________________________________________________________________
	380	TClonesArray* AliTRDReconstructor::GetClusters()
	381	{
	382	// Build/ Retrieve cluster array
	383	if(!fgClusters){
	384	fgClusters = new TClonesArray("AliTRDcluster", Int_t(GetRecoParam()->GetNClusters()));
	385	fgClusters->SetOwner();
	386	AliInfoGeneral("AliTRDReconstructor", Form("Allocate cluster array @ %p", (void*)fgClusters));
	387	}
	388	return fgClusters;
	389	}
	390
	391	//_____________________________________________________________________________
	392	TClonesArray* AliTRDReconstructor::GetTracklets(const char *trkltype)
	393	{
	394	// Build/ Retrieve online tracklets array
	395
	396	if (trkltype && strlen(trkltype) > 0) {
	397	if(fgTracklets && (TClass::GetClass(trkltype) != fgTracklets->GetClass())){
	398	fgTracklets->Delete();
	399	delete fgTracklets;
	400	}
	401	if (!fgTracklets) {
	402	fgTracklets = new TClonesArray(trkltype, 200);
	403	fgTracklets->SetOwner(kTRUE);
	404	AliInfoGeneral("AliTRDReconstructor", Form("Allocate online tracklets[%s] array @ %p", trkltype, (void*)fgTracklets));
	405	}
	406	}
	407	return fgTracklets;
	408	}
	409
	410	//_____________________________________________________________________________
	411	TClonesArray* AliTRDReconstructor::GetTracks()
	412	{
	413	// Build/ Retrieve cluster array
	414	if(!fgTracks){
	415	fgTracks = new TClonesArray("AliESDTrdTrack", 100);
	416	fgTracks->SetOwner();
	417	AliInfoGeneral("AliTRDReconstructor", Form("Allocate online tracks array @ %p", (void*)fgTracks));
	418	}
	419	return fgTracks;
	420	}
	421
	422	//_____________________________________________________________________________
	423	void AliTRDReconstructor::ResetContainers() const
	424	{
	425	// prepare data containers for a new event
	426
	427	if(fgClusters){
	428	AliDebug(1, Form("Removing %5d clusters @ %p", fgClusters->GetEntriesFast(), (void*)fgClusters));
	429	fgClusters->Clear();
	430	}
	431	if(fgTracklets){
	432	AliDebug(1, Form("Removing %3d online tracklets @ %p", fgTracklets->GetEntriesFast(), (void*)fgTracklets));
	433	fgTracklets->Clear();
	434	}
	435	if(fgTracks){
	436	AliDebug(1, Form("Removing %3d online tracks @ %p", fgTracks->GetEntriesFast(), (void*)fgTracks));
	437	fgTracks->Clear();
	438	}
	439	}