[u/mrichter/AliRoot.git] / HLT / ITS / tracking / AliHLTITSTrackerComponent.cxx

// $Id: AliHLTITSTrackerComponent.cxx 32659 2009-06-02 16:08:40Z sgorbuno $
// **************************************************************************
// This file is property of and copyright by the ALICE HLT Project          *
// ALICE Experiment at CERN, All rights reserved.                           *
//                                                                          *
// Primary Authors: Sergey Gorbunov <sergey.gorbunov@kip.uni-heidelberg.de> *
//                  Ivan Kisel <kisel@kip.uni-heidelberg.de>                *
//                  for The ALICE HLT Project.                              *
//                                                                          *
// 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.                    *
//                                                                          *
//***************************************************************************

///  @file   AliHLTITSTrackerComponent.cxx
///  @author Sergey Gorbunov <sergey.gorbunov@kip.uni-heidelberg.de>
///  @date   June 2009
///  @brief  An ITS tracker processing component for the HLT


/////////////////////////////////////////////////////
//                                                 //
// a ITS tracker processing component for the HLT  //
//                                                 //
/////////////////////////////////////////////////////

#if __GNUC__>= 3
using namespace std;
#endif

#include "AliHLTITSTrackerComponent.h"
#include "AliHLTArray.h"
#include "AliExternalTrackParam.h"
#include "TStopwatch.h"
#include "TMath.h"
#include "AliCDBEntry.h"
#include "AliCDBManager.h"
#include "AliGeomManager.h"
#include "TObjString.h"
#include "TObjArray.h"
#include "AliITStrackerHLT.h"
#include "AliHLTITSSpacePointData.h"
#include "AliHLTITSClusterDataFormat.h"
#include "AliHLTDataTypes.h"
#include "AliHLTExternalTrackParam.h"
#include "AliHLTGlobalBarrelTrack.h"
#include "AliGeomManager.h"


/** ROOT macro for the implementation of ROOT specific class methods */
ClassImp( AliHLTITSTrackerComponent )
AliHLTITSTrackerComponent::AliHLTITSTrackerComponent()
    :
    fSolenoidBz( 0 ),
    fBenchmark("ITSTracker"),
    fTracker(0)
{
  // see header file for class documentation
  // or
  // refer to README to build package
  // or
  // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
}

AliHLTITSTrackerComponent::AliHLTITSTrackerComponent( const AliHLTITSTrackerComponent& )
    :
    AliHLTProcessor(),
    fSolenoidBz( 0 ),
    fBenchmark("ITSTracker"),
    fTracker(0)
{
  // see header file for class documentation
  HLTFatal( "copy constructor untested" );
}

AliHLTITSTrackerComponent& AliHLTITSTrackerComponent::operator=( const AliHLTITSTrackerComponent& )
{
  // see header file for class documentation
  HLTFatal( "assignment operator untested" );
  return *this;
}

AliHLTITSTrackerComponent::~AliHLTITSTrackerComponent()
{
  // see header file for class documentation
  delete fTracker;
}

//
// Public functions to implement AliHLTComponent's interface.
// These functions are required for the registration process
//

const char* AliHLTITSTrackerComponent::GetComponentID()
{
  // see header file for class documentation
  return "ITSTracker";
}

void AliHLTITSTrackerComponent::GetInputDataTypes( vector<AliHLTComponentDataType>& list )
{
  // see header file for class documentation
  list.clear();
  list.push_back( kAliHLTDataTypeTrack|kAliHLTDataOriginTPC );
  list.push_back( kAliHLTDataTypeClusters|kAliHLTDataOriginITSSSD );
  list.push_back( kAliHLTDataTypeClusters|kAliHLTDataOriginITSSPD );
  list.push_back( kAliHLTDataTypeClusters|kAliHLTDataOriginITSSDD );
}

AliHLTComponentDataType AliHLTITSTrackerComponent::GetOutputDataType()
{
  // see header file for class documentation  
  return kAliHLTMultipleDataType;
}

int AliHLTITSTrackerComponent::GetOutputDataTypes(AliHLTComponentDataTypeList& tgtList)
{
  // see header file for class documentation  
  tgtList.clear();
  tgtList.push_back(kAliHLTDataTypeTrack|kAliHLTDataOriginITS);
  tgtList.push_back(kAliHLTDataTypeTrack|kAliHLTDataOriginITSOut);
  return tgtList.size();
}

void AliHLTITSTrackerComponent::GetOutputDataSize( unsigned long& constBase, double& inputMultiplier )
{
  // define guess for the output data size
  constBase = 200;       // minimum size
  inputMultiplier = 2.; // size relative to input
}

AliHLTComponent* AliHLTITSTrackerComponent::Spawn()
{
  // see header file for class documentation
  return new AliHLTITSTrackerComponent;
}

void AliHLTITSTrackerComponent::SetDefaultConfiguration()
{
  // Set default configuration for the CA tracker component
  // Some parameters can be later overwritten from the OCDB

  fSolenoidBz = -5.00668;
  
}

int AliHLTITSTrackerComponent::ReadConfigurationString(  const char* arguments )
{
  // Set configuration parameters for the CA tracker component from the string

  int iResult = 0;
  if ( !arguments ) return iResult;

  TString allArgs = arguments;
  TString argument;
  int bMissingParam = 0;

  TObjArray* pTokens = allArgs.Tokenize( " " );

  int nArgs =  pTokens ? pTokens->GetEntries() : 0;

  for ( int i = 0; i < nArgs; i++ ) {
    argument = ( ( TObjString* )pTokens->At( i ) )->GetString();
    if ( argument.IsNull() ) continue;

    if ( argument.CompareTo( "-solenoidBz" ) == 0 ) {
      if ( ( bMissingParam = ( ++i >= pTokens->GetEntries() ) ) ) break;
      HLTWarning("argument -solenoidBz is deprecated, magnetic field set up globally (%f)", GetBz());
      continue;
    }

    //if ( argument.CompareTo( "-minNClustersOnTrack" ) == 0 ) {
    //if ( ( bMissingParam = ( ++i >= pTokens->GetEntries() ) ) ) break;
    //fMinNTrackClusters = ( ( TObjString* )pTokens->At( i ) )->GetString().Atoi();
    //HLTInfo( "minNClustersOnTrack set to: %d", fMinNTrackClusters );
    //continue;
    //}

    HLTError( "Unknown option \"%s\"", argument.Data() );
    iResult = -EINVAL;
  }
  delete pTokens;

  if ( bMissingParam ) {
    HLTError( "Specifier missed for parameter \"%s\"", argument.Data() );
    iResult = -EINVAL;
  }

  return iResult;
}


int AliHLTITSTrackerComponent::ReadCDBEntry( const char* cdbEntry, const char* chainId )
{
  // see header file for class documentation

  const char* defaultNotify = "";

  if ( !cdbEntry ) {
    return 0;// need to add the HLT/ConfigITS/ITSTracker directory to cdb SG!!!
    cdbEntry = "HLT/ConfigITS/ITSTracker";
    defaultNotify = " (default)";
    chainId = 0;
  }

  HLTInfo( "configure from entry \"%s\"%s, chain id %s", cdbEntry, defaultNotify, ( chainId != NULL && chainId[0] != 0 ) ? chainId : "<none>" );
  AliCDBEntry *pEntry = AliCDBManager::Instance()->Get( cdbEntry );//,GetRunNo());

  if ( !pEntry ) {
    HLTError( "cannot fetch object \"%s\" from CDB", cdbEntry );
    return -EINVAL;
  }

  TObjString* pString = dynamic_cast<TObjString*>( pEntry->GetObject() );

  if ( !pString ) {
    HLTError( "configuration object \"%s\" has wrong type, required TObjString", cdbEntry );
    return -EINVAL;
  }

  HLTInfo( "received configuration object string: \"%s\"", pString->GetString().Data() );

  return  ReadConfigurationString( pString->GetString().Data() );
}


int AliHLTITSTrackerComponent::Configure( const char* cdbEntry, const char* chainId, const char *commandLine )
{
  // Configure the component
  // There are few levels of configuration,
  // parameters which are set on one step can be overwritten on the next step

  //* read hard-coded values

  SetDefaultConfiguration();

  //* read the default CDB entry

  int iResult1 = ReadCDBEntry( NULL, chainId );

  //* read magnetic field

  int iResult2 = 0; //ReadCDBEntry( kAliHLTCDBSolenoidBz, chainId );
  fSolenoidBz = GetBz();

  //* read the actual CDB entry if required

  int iResult3 = ( cdbEntry ) ? ReadCDBEntry( cdbEntry, chainId ) : 0;

  //* read extra parameters from input (if they are)

  int iResult4 = 0;

  if ( commandLine && commandLine[0] != '\0' ) {
    HLTInfo( "received configuration string from HLT framework: \"%s\"", commandLine );
    iResult4 = ReadConfigurationString( commandLine );
  }

  // Initialise the tracker here

  return iResult1 ? iResult1 : ( iResult2 ? iResult2 : ( iResult3 ? iResult3 : iResult4 ) );
}


int AliHLTITSTrackerComponent::DoInit( int argc, const char** argv )
{
  // Configure the ITS tracker component

  if ( fTracker ) return -EINPROGRESS;

  if(AliGeomManager::GetGeometry()==NULL){
    AliGeomManager::LoadGeometry();
  }
  AliGeomManager::ApplyAlignObjsFromCDB("ITS");

  TString arguments = "";
  for ( int i = 0; i < argc; i++ ) {
    if ( !arguments.IsNull() ) arguments += " ";
    arguments += argv[i];
  }

  int ret = Configure( NULL, NULL, arguments.Data() );

  // Check field
  if (!TGeoGlobalMagField::Instance()) {
    HLTError("magnetic field not initialized, please set up TGeoGlobalMagField and AliMagF");
    return -ENODEV;
  }
  fSolenoidBz=GetBz();

  fTracker = new AliITStrackerHLT(0);
  fBenchmark.Reset();
  fBenchmark.SetTimer(0,"total");
  fBenchmark.SetTimer(1,"reco");
  return ret;
}


int AliHLTITSTrackerComponent::DoDeinit()
{
  // see header file for class documentation
  delete fTracker;
  fTracker = 0;
  return 0;
}


int AliHLTITSTrackerComponent::Reconfigure( const char* cdbEntry, const char* chainId )
{
  // Reconfigure the component from OCDB .

  return Configure( cdbEntry, chainId, NULL );
}


int AliHLTITSTrackerComponent::DoEvent
(
  const AliHLTComponentEventData& evtData,
  const AliHLTComponentBlockData* blocks,
  AliHLTComponentTriggerData& /*trigData*/,
  AliHLTUInt8_t* outputPtr,
  AliHLTUInt32_t& size,
  vector<AliHLTComponentBlockData>& outputBlocks )
{
  //* process event

  AliHLTUInt32_t maxBufferSize = size;
  size = 0; // output size
  
  if (!IsDataEvent()) return 0;

  if ( evtData.fBlockCnt <= 0 ) {
    HLTWarning( "no blocks in event" );
    return 0;
  }

  fBenchmark.StartNewEvent();
  fBenchmark.Start(0);

  // Event reconstruction in ITS

  int iResult=0;

  int nBlocks = evtData.fBlockCnt;

  
  vector< AliExternalTrackParam > tracksTPC;
  vector< int > tracksTPCId;

  int nClustersTotal = 0;

  for (int ndx=0; ndx<nBlocks && iResult>=0; ndx++) {

    const AliHLTComponentBlockData* iter = blocks+ndx;
 
    if ( (iter->fDataType == (kAliHLTDataTypeClusters|kAliHLTDataOriginITSSSD) ) || 
	 (iter->fDataType == (kAliHLTDataTypeClusters|kAliHLTDataOriginITSSPD) ) ||
	 (iter->fDataType == (kAliHLTDataTypeClusters|kAliHLTDataOriginITSSDD) ) 
	 ){      
      AliHLTITSClusterData *inPtr=reinterpret_cast<AliHLTITSClusterData*>( iter->fPtr );
      nClustersTotal+=inPtr->fSpacePointCnt;
    }         
  }


  fTracker->StartLoadClusters(nClustersTotal);

  for (int ndx=0; ndx<nBlocks && iResult>=0; ndx++) {

    const AliHLTComponentBlockData* iter = blocks+ndx;
 
    // Read TPC tracks
    
    if( iter->fDataType == ( kAliHLTDataTypeTrack|kAliHLTDataOriginTPC ) ){	  
      fBenchmark.AddInput(iter->fSize);
      AliHLTTracksData* dataPtr = ( AliHLTTracksData* ) iter->fPtr;
      int nTracks = dataPtr->fCount;
      AliHLTExternalTrackParam* currOutTrack = dataPtr->fTracklets;
      for( int itr=0; itr<nTracks; itr++ ){
	AliHLTGlobalBarrelTrack t(*currOutTrack);
	tracksTPC.push_back( t );
	tracksTPCId.push_back( currOutTrack->fTrackID );
	unsigned int dSize = sizeof( AliHLTExternalTrackParam ) + currOutTrack->fNPoints * sizeof( unsigned int );
	currOutTrack = ( AliHLTExternalTrackParam* )( (( Byte_t * )currOutTrack) + dSize );
      }
    }


    // Read ITS clusters

    if ( (iter->fDataType == (kAliHLTDataTypeClusters|kAliHLTDataOriginITSSSD) ) || 
	 (iter->fDataType == (kAliHLTDataTypeClusters|kAliHLTDataOriginITSSPD) ) ||
	 (iter->fDataType == (kAliHLTDataTypeClusters|kAliHLTDataOriginITSSDD) ) 
	 ){
      
      fBenchmark.AddInput(iter->fSize);

      AliHLTITSClusterData *inPtr=reinterpret_cast<AliHLTITSClusterData*>( iter->fPtr );
      int nClusters = inPtr->fSpacePointCnt;
      for( int icl=0; icl<nClusters; icl++ ){
	AliHLTITSSpacePointData &d = inPtr->fSpacePoints[icl];

	Int_t lab[4] = { d.fTracks[0], d.fTracks[1], d.fTracks[2], d.fIndex };
	Int_t info[3] = { d.fNy, d.fNz, d.fLayer };
	Float_t hit[6] = { d.fY, d.fZ, d.fSigmaY2, d.fSigmaZ2, d.fQ, d.fSigmaYZ };
	if( d.fLayer==4 ) hit[5] = -hit[5];
	fTracker->LoadCluster( AliITSRecPoint( lab, hit, info ) );
      }   
    }
    
  }// end read input blocks
  
  // Reconstruct the event

    fBenchmark.Start(1);
    fTracker->Reconstruct( &(tracksTPC[0]), tracksTPC.size() );
    fBenchmark.Stop(1);

  
  // Fill output tracks
  int nITSUpdated = 0;
  {
    
    for( int iOut=0; iOut<=1; iOut++ ){

      unsigned int blockSize = 0;

      AliHLTTracksData* outPtr = ( AliHLTTracksData* )( outputPtr + size );
      AliHLTExternalTrackParam* currOutTrack = outPtr->fTracklets;

      blockSize =   ( ( AliHLTUInt8_t * )currOutTrack ) -  ( ( AliHLTUInt8_t * )outPtr );

      if ( size + blockSize  > maxBufferSize ) {
	HLTWarning( "Output buffer size exceed (buffer size %d, current size %d), tracks are not stored", maxBufferSize, size + blockSize );
	iResult = -ENOSPC;
	break;
      }

      outPtr->fCount = 0;
       AliHLTITSTrack *tracks=0;
      int nTracks = 0;
      if( iOut==0 ){
	tracks = fTracker->Tracks();
	nTracks = fTracker->NTracks();
      } else{
	tracks = fTracker->ITSOutTracks();
	nTracks = fTracker->NITSOutTracks();
      }
      
      for ( int itr = 0; itr < nTracks; itr++ ) {
	AliHLTITSTrack &t = tracks[itr];
	int id =  tracksTPCId[t.TPCtrackId()];      
	int nClusters = t.GetNumberOfClusters();
	if( iOut==0 && nClusters>0 ) nITSUpdated++;
	
	unsigned int dSize = sizeof( AliHLTExternalTrackParam ) + nClusters * sizeof( unsigned int );
	
	if ( size + blockSize + dSize > maxBufferSize ) {
	  HLTWarning( "Output buffer size exceed (buffer size %d, current size %d), %d tracks are not stored", maxBufferSize, size + blockSize + dSize, nTracks - itr + 1 );
	  iResult = -ENOSPC;
	  break;
	}
	
	currOutTrack->fAlpha = t.GetAlpha();
	currOutTrack->fX = t.GetX();
	currOutTrack->fY = t.GetY();
	currOutTrack->fZ = t.GetZ();            
	currOutTrack->fLastX = 0;
	currOutTrack->fLastY = 0;
	currOutTrack->fLastZ = 0;      
	currOutTrack->fq1Pt = t.GetSigned1Pt();
	currOutTrack->fSinPsi = t.GetSnp();
	currOutTrack->fTgl = t.GetTgl();
	for( int i=0; i<15; i++ ) currOutTrack->fC[i] = t.GetCovariance()[i];
	currOutTrack->fTrackID = id;
	currOutTrack->fFlags = 0;
	currOutTrack->fNPoints = nClusters;    
	for ( int i = 0; i < nClusters; i++ ) currOutTrack->fPointIDs[i] = t.GetClusterIndex( i );
	currOutTrack = ( AliHLTExternalTrackParam* )( (( Byte_t * )currOutTrack) + dSize );
	blockSize += dSize;
	outPtr->fCount++;
      }
  

      AliHLTComponentBlockData resultData;
      FillBlockData( resultData );
      resultData.fOffset = 0;
      resultData.fSize = blockSize;
      if( iOut==0 ){
	resultData.fDataType = kAliHLTDataTypeTrack|kAliHLTDataOriginITS;
      } else {
	resultData.fDataType = kAliHLTDataTypeTrack|kAliHLTDataOriginITSOut;
      }
      fBenchmark.AddOutput(resultData.fSize);
      outputBlocks.push_back( resultData );
      size += resultData.fSize;       
    }  
  }
  
   fBenchmark.Stop(0);

  // Set log level to "Warning" for on-line system monitoring
  HLTInfo( "ITS Tracker: output %d tracks;  input %d clusters, %d tracks",
	   nITSUpdated, nClustersTotal, tracksTPC.size() );

  HLTInfo(fBenchmark.GetStatistics());
  return iResult;
}
Commit	Line	Data
21de9ddd	1	// $Id: AliHLTITSTrackerComponent.cxx 32659 2009-06-02 16:08:40Z sgorbuno $
6edb0fb5	2	// **************************************************************************
	3	// This file is property of and copyright by the ALICE HLT Project *
	4	// ALICE Experiment at CERN, All rights reserved. *
	5	// *
	6	// Primary Authors: Sergey Gorbunov <sergey.gorbunov@kip.uni-heidelberg.de> *
	7	// Ivan Kisel <kisel@kip.uni-heidelberg.de> *
	8	// for The ALICE HLT Project. *
	9	// *
	10	// Permission to use, copy, modify and distribute this software and its *
	11	// documentation strictly for non-commercial purposes is hereby granted *
	12	// without fee, provided that the above copyright notice appears in all *
	13	// copies and that both the copyright notice and this permission notice *
	14	// appear in the supporting documentation. The authors make no claims *
	15	// about the suitability of this software for any purpose. It is *
	16	// provided "as is" without express or implied warranty. *
	17	// *
	18	//***************************************************************************
	19
21de9ddd	20	/// @file AliHLTITSTrackerComponent.cxx
	21	/// @author Sergey Gorbunov <sergey.gorbunov@kip.uni-heidelberg.de>
	22	/// @date June 2009
	23	/// @brief An ITS tracker processing component for the HLT
	24
6edb0fb5	25
	26	/////////////////////////////////////////////////////
	27	// //
	28	// a ITS tracker processing component for the HLT //
	29	// //
	30	/////////////////////////////////////////////////////
	31
	32	#if __GNUC__>= 3
	33	using namespace std;
	34	#endif
	35
	36	#include "AliHLTITSTrackerComponent.h"
	37	#include "AliHLTArray.h"
	38	#include "AliExternalTrackParam.h"
	39	#include "TStopwatch.h"
	40	#include "TMath.h"
	41	#include "AliCDBEntry.h"
	42	#include "AliCDBManager.h"
1b4a9c5a	43	#include "AliGeomManager.h"
6edb0fb5	44	#include "TObjString.h"
6edb0fb5	45	#include "TObjArray.h"
6edb0fb5	46	#include "AliITStrackerHLT.h"
6edb0fb5	47	#include "AliHLTITSSpacePointData.h"
	48	#include "AliHLTITSClusterDataFormat.h"
	49	#include "AliHLTDataTypes.h"
9af5a71c	50	#include "AliHLTExternalTrackParam.h"
0cd1ba6e	51	#include "AliHLTGlobalBarrelTrack.h"
31822224	52	#include "AliGeomManager.h"
6edb0fb5	53
	54
	55
	56	/** ROOT macro for the implementation of ROOT specific class methods */
	57	ClassImp( AliHLTITSTrackerComponent )
	58	AliHLTITSTrackerComponent::AliHLTITSTrackerComponent()
	59	:
	60	fSolenoidBz( 0 ),
57a4102f	61	fBenchmark("ITSTracker"),
6edb0fb5	62	fTracker(0)
	63	{
	64	// see header file for class documentation
	65	// or
	66	// refer to README to build package
	67	// or
	68	// visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
	69	}
	70
	71	AliHLTITSTrackerComponent::AliHLTITSTrackerComponent( const AliHLTITSTrackerComponent& )
	72	:
	73	AliHLTProcessor(),
	74	fSolenoidBz( 0 ),
57a4102f	75	fBenchmark("ITSTracker"),
6edb0fb5	76	fTracker(0)
	77	{
	78	// see header file for class documentation
	79	HLTFatal( "copy constructor untested" );
	80	}
	81
	82	AliHLTITSTrackerComponent& AliHLTITSTrackerComponent::operator=( const AliHLTITSTrackerComponent& )
	83	{
	84	// see header file for class documentation
	85	HLTFatal( "assignment operator untested" );
	86	return *this;
	87	}
	88
	89	AliHLTITSTrackerComponent::~AliHLTITSTrackerComponent()
	90	{
	91	// see header file for class documentation
	92	delete fTracker;
	93	}
	94
	95	//
	96	// Public functions to implement AliHLTComponent's interface.
	97	// These functions are required for the registration process
	98	//
	99
	100	const char* AliHLTITSTrackerComponent::GetComponentID()
	101	{
	102	// see header file for class documentation
	103	return "ITSTracker";
	104	}
	105
	106	void AliHLTITSTrackerComponent::GetInputDataTypes( vector<AliHLTComponentDataType>& list )
	107	{
	108	// see header file for class documentation
	109	list.clear();
9af5a71c	110	list.push_back( kAliHLTDataTypeTrack\|kAliHLTDataOriginTPC );
6edb0fb5	111	list.push_back( kAliHLTDataTypeClusters\|kAliHLTDataOriginITSSSD );
6edb0fb5	112	list.push_back( kAliHLTDataTypeClusters\|kAliHLTDataOriginITSSPD );
21de9ddd	113	list.push_back( kAliHLTDataTypeClusters\|kAliHLTDataOriginITSSDD );
6edb0fb5	114	}
	115
	116	AliHLTComponentDataType AliHLTITSTrackerComponent::GetOutputDataType()
	117	{
	118	// see header file for class documentation
b7ed2eb4	119	return kAliHLTMultipleDataType;
	120	}
	121
	122	int AliHLTITSTrackerComponent::GetOutputDataTypes(AliHLTComponentDataTypeList& tgtList)
	123	{
	124	// see header file for class documentation
	125	tgtList.clear();
	126	tgtList.push_back(kAliHLTDataTypeTrack\|kAliHLTDataOriginITS);
	127	tgtList.push_back(kAliHLTDataTypeTrack\|kAliHLTDataOriginITSOut);
	128	return tgtList.size();
6edb0fb5	129	}
	130
	131	void AliHLTITSTrackerComponent::GetOutputDataSize( unsigned long& constBase, double& inputMultiplier )
	132	{
	133	// define guess for the output data size
	134	constBase = 200; // minimum size
04652fd8	135	inputMultiplier = 2.; // size relative to input
6edb0fb5	136	}
	137
	138	AliHLTComponent* AliHLTITSTrackerComponent::Spawn()
	139	{
	140	// see header file for class documentation
	141	return new AliHLTITSTrackerComponent;
	142	}
	143
	144	void AliHLTITSTrackerComponent::SetDefaultConfiguration()
	145	{
	146	// Set default configuration for the CA tracker component
	147	// Some parameters can be later overwritten from the OCDB
	148
a8714ffa	149	fSolenoidBz = -5.00668;
57a4102f	150
6edb0fb5	151	}
	152
	153	int AliHLTITSTrackerComponent::ReadConfigurationString( const char* arguments )
	154	{
	155	// Set configuration parameters for the CA tracker component from the string
	156
	157	int iResult = 0;
	158	if ( !arguments ) return iResult;
	159
	160	TString allArgs = arguments;
	161	TString argument;
	162	int bMissingParam = 0;
	163
	164	TObjArray* pTokens = allArgs.Tokenize( " " );
	165
	166	int nArgs = pTokens ? pTokens->GetEntries() : 0;
	167
	168	for ( int i = 0; i < nArgs; i++ ) {
	169	argument = ( ( TObjString* )pTokens->At( i ) )->GetString();
	170	if ( argument.IsNull() ) continue;
	171
	172	if ( argument.CompareTo( "-solenoidBz" ) == 0 ) {
	173	if ( ( bMissingParam = ( ++i >= pTokens->GetEntries() ) ) ) break;
75970b8d	174	HLTWarning("argument -solenoidBz is deprecated, magnetic field set up globally (%f)", GetBz());
6edb0fb5	175	continue;
	176	}
	177
	178	//if ( argument.CompareTo( "-minNClustersOnTrack" ) == 0 ) {
	179	//if ( ( bMissingParam = ( ++i >= pTokens->GetEntries() ) ) ) break;
	180	//fMinNTrackClusters = ( ( TObjString* )pTokens->At( i ) )->GetString().Atoi();
	181	//HLTInfo( "minNClustersOnTrack set to: %d", fMinNTrackClusters );
	182	//continue;
	183	//}
	184
	185	HLTError( "Unknown option \"%s\"", argument.Data() );
	186	iResult = -EINVAL;
	187	}
	188	delete pTokens;
	189
	190	if ( bMissingParam ) {
	191	HLTError( "Specifier missed for parameter \"%s\"", argument.Data() );
	192	iResult = -EINVAL;
	193	}
	194
	195	return iResult;
	196	}
	197
	198
	199	int AliHLTITSTrackerComponent::ReadCDBEntry( const char* cdbEntry, const char* chainId )
	200	{
	201	// see header file for class documentation
	202
	203	const char* defaultNotify = "";
	204
	205	if ( !cdbEntry ) {
9eee44f6	206	return 0;// need to add the HLT/ConfigITS/ITSTracker directory to cdb SG!!!
6edb0fb5	207	cdbEntry = "HLT/ConfigITS/ITSTracker";
	208	defaultNotify = " (default)";
	209	chainId = 0;
	210	}
	211
	212	HLTInfo( "configure from entry \"%s\"%s, chain id %s", cdbEntry, defaultNotify, ( chainId != NULL && chainId[0] != 0 ) ? chainId : "<none>" );
	213	AliCDBEntry *pEntry = AliCDBManager::Instance()->Get( cdbEntry );//,GetRunNo());
	214
	215	if ( !pEntry ) {
	216	HLTError( "cannot fetch object \"%s\" from CDB", cdbEntry );
	217	return -EINVAL;
	218	}
	219
	220	TObjString* pString = dynamic_cast<TObjString*>( pEntry->GetObject() );
	221
	222	if ( !pString ) {
	223	HLTError( "configuration object \"%s\" has wrong type, required TObjString", cdbEntry );
	224	return -EINVAL;
	225	}
	226
	227	HLTInfo( "received configuration object string: \"%s\"", pString->GetString().Data() );
	228
	229	return ReadConfigurationString( pString->GetString().Data() );
	230	}
	231
	232
	233	int AliHLTITSTrackerComponent::Configure( const char* cdbEntry, const char* chainId, const char *commandLine )
	234	{
	235	// Configure the component
	236	// There are few levels of configuration,
	237	// parameters which are set on one step can be overwritten on the next step
	238
	239	//* read hard-coded values
	240
	241	SetDefaultConfiguration();
	242
	243	//* read the default CDB entry
	244
	245	int iResult1 = ReadCDBEntry( NULL, chainId );
	246
	247	//* read magnetic field
	248
a098ab46	249	int iResult2 = 0; //ReadCDBEntry( kAliHLTCDBSolenoidBz, chainId );
75970b8d	250	fSolenoidBz = GetBz();
6edb0fb5	251
	252	//* read the actual CDB entry if required
	253
	254	int iResult3 = ( cdbEntry ) ? ReadCDBEntry( cdbEntry, chainId ) : 0;
	255
	256	//* read extra parameters from input (if they are)
	257
	258	int iResult4 = 0;
	259
	260	if ( commandLine && commandLine[0] != '\0' ) {
	261	HLTInfo( "received configuration string from HLT framework: \"%s\"", commandLine );
	262	iResult4 = ReadConfigurationString( commandLine );
	263	}
	264
	265	// Initialise the tracker here
	266
	267	return iResult1 ? iResult1 : ( iResult2 ? iResult2 : ( iResult3 ? iResult3 : iResult4 ) );
	268	}
	269
	270
	271
	272	int AliHLTITSTrackerComponent::DoInit( int argc, const char** argv )
	273	{
	274	// Configure the ITS tracker component
	275
75970b8d	276	if ( fTracker ) return -EINPROGRESS;
fb015741	277
	278	if(AliGeomManager::GetGeometry()==NULL){
	279	AliGeomManager::LoadGeometry();
	280	}
24a9f989	281	AliGeomManager::ApplyAlignObjsFromCDB("ITS");
fb015741	282
6edb0fb5	283	TString arguments = "";
	284	for ( int i = 0; i < argc; i++ ) {
	285	if ( !arguments.IsNull() ) arguments += " ";
	286	arguments += argv[i];
	287	}
	288
b55698e6	289	int ret = Configure( NULL, NULL, arguments.Data() );
b55698e6	290
75970b8d	291	// Check field
	292	if (!TGeoGlobalMagField::Instance()) {
	293	HLTError("magnetic field not initialized, please set up TGeoGlobalMagField and AliMagF");
	294	return -ENODEV;
b55698e6	295	}
75970b8d	296	fSolenoidBz=GetBz();
75970b8d	297
b55698e6	298	fTracker = new AliITStrackerHLT(0);
57a4102f	299	fBenchmark.Reset();
	300	fBenchmark.SetTimer(0,"total");
	301	fBenchmark.SetTimer(1,"reco");
b55698e6	302	return ret;
6edb0fb5	303	}
	304
	305
	306	int AliHLTITSTrackerComponent::DoDeinit()
	307	{
	308	// see header file for class documentation
	309	delete fTracker;
	310	fTracker = 0;
	311	return 0;
	312	}
	313
	314
	315
	316	int AliHLTITSTrackerComponent::Reconfigure( const char* cdbEntry, const char* chainId )
	317	{
	318	// Reconfigure the component from OCDB .
	319
	320	return Configure( cdbEntry, chainId, NULL );
	321	}
	322
	323
	324
	325	int AliHLTITSTrackerComponent::DoEvent
	326	(
	327	const AliHLTComponentEventData& evtData,
	328	const AliHLTComponentBlockData* blocks,
	329	AliHLTComponentTriggerData& /trigData/,
	330	AliHLTUInt8_t* outputPtr,
	331	AliHLTUInt32_t& size,
	332	vector<AliHLTComponentBlockData>& outputBlocks )
	333	{
	334	//* process event
	335
	336	AliHLTUInt32_t maxBufferSize = size;
	337	size = 0; // output size
365eee5d	338
21de9ddd	339	if (!IsDataEvent()) return 0;
6edb0fb5	340
	341	if ( evtData.fBlockCnt <= 0 ) {
	342	HLTWarning( "no blocks in event" );
	343	return 0;
	344	}
	345
57a4102f	346	fBenchmark.StartNewEvent();
57a4102f	347	fBenchmark.Start(0);
6edb0fb5	348
	349	// Event reconstruction in ITS
	350
	351	int iResult=0;
	352
	353	int nBlocks = evtData.fBlockCnt;
	354
	355
	356	vector< AliExternalTrackParam > tracksTPC;
	357	vector< int > tracksTPCId;
ef6e2aa2	358
ef6e2aa2	359	int nClustersTotal = 0;
6edb0fb5	360
365eee5d	361	for (int ndx=0; ndx<nBlocks && iResult>=0; ndx++) {
	362
	363	const AliHLTComponentBlockData* iter = blocks+ndx;
	364
	365	if ( (iter->fDataType == (kAliHLTDataTypeClusters\|kAliHLTDataOriginITSSSD) ) \|\|
	366	(iter->fDataType == (kAliHLTDataTypeClusters\|kAliHLTDataOriginITSSPD) ) \|\|
	367	(iter->fDataType == (kAliHLTDataTypeClusters\|kAliHLTDataOriginITSSDD) )
	368	){
	369	AliHLTITSClusterData inPtr=reinterpret_cast<AliHLTITSClusterData>( iter->fPtr );
	370	nClustersTotal+=inPtr->fSpacePointCnt;
	371	}
	372	}
	373
	374
	375	fTracker->StartLoadClusters(nClustersTotal);
6edb0fb5	376
	377	for (int ndx=0; ndx<nBlocks && iResult>=0; ndx++) {
	378
	379	const AliHLTComponentBlockData* iter = blocks+ndx;
	380
	381	// Read TPC tracks
9af5a71c	382
9af5a71c	383	if( iter->fDataType == ( kAliHLTDataTypeTrack\|kAliHLTDataOriginTPC ) ){
57a4102f	384	fBenchmark.AddInput(iter->fSize);
9af5a71c	385	AliHLTTracksData* dataPtr = ( AliHLTTracksData* ) iter->fPtr;
	386	int nTracks = dataPtr->fCount;
	387	AliHLTExternalTrackParam* currOutTrack = dataPtr->fTracklets;
	388	for( int itr=0; itr<nTracks; itr++ ){
0cd1ba6e	389	AliHLTGlobalBarrelTrack t(*currOutTrack);
9af5a71c	390	tracksTPC.push_back( t );
	391	tracksTPCId.push_back( currOutTrack->fTrackID );
	392	unsigned int dSize = sizeof( AliHLTExternalTrackParam ) + currOutTrack->fNPoints * sizeof( unsigned int );
	393	currOutTrack = ( AliHLTExternalTrackParam* )( (( Byte_t * )currOutTrack) + dSize );
6edb0fb5	394	}
	395	}
	396
9af5a71c	397
6edb0fb5	398	// Read ITS clusters
	399
	400	if ( (iter->fDataType == (kAliHLTDataTypeClusters\|kAliHLTDataOriginITSSSD) ) \|\|
21de9ddd	401	(iter->fDataType == (kAliHLTDataTypeClusters\|kAliHLTDataOriginITSSPD) ) \|\|
21de9ddd	402	(iter->fDataType == (kAliHLTDataTypeClusters\|kAliHLTDataOriginITSSDD) )
6edb0fb5	403	){
57a4102f	404
57a4102f	405	fBenchmark.AddInput(iter->fSize);
6edb0fb5	406
	407	AliHLTITSClusterData inPtr=reinterpret_cast<AliHLTITSClusterData>( iter->fPtr );
	408	int nClusters = inPtr->fSpacePointCnt;
	409	for( int icl=0; icl<nClusters; icl++ ){
	410	AliHLTITSSpacePointData &d = inPtr->fSpacePoints[icl];
87cc43e1	411
	412	Int_t lab[4] = { d.fTracks[0], d.fTracks[1], d.fTracks[2], d.fIndex };
	413	Int_t info[3] = { d.fNy, d.fNz, d.fLayer };
	414	Float_t hit[6] = { d.fY, d.fZ, d.fSigmaY2, d.fSigmaZ2, d.fQ, d.fSigmaYZ };
	415	if( d.fLayer==4 ) hit[5] = -hit[5];
ef6e2aa2	416	fTracker->LoadCluster( AliITSRecPoint( lab, hit, info ) );
6edb0fb5	417	}
	418	}
	419
	420	}// end read input blocks
	421
6edb0fb5	422	// Reconstruct the event
6edb0fb5	423
57a4102f	424	fBenchmark.Start(1);
	425	fTracker->Reconstruct( &(tracksTPC[0]), tracksTPC.size() );
	426	fBenchmark.Stop(1);
	427
6edb0fb5	428
6edb0fb5	429	// Fill output tracks
9eee44f6	430	int nITSUpdated = 0;
6edb0fb5	431	{
b7ed2eb4	432
b7ed2eb4	433	for( int iOut=0; iOut<=1; iOut++ ){
9af5a71c	434
b7ed2eb4	435	unsigned int blockSize = 0;
9af5a71c	436
b7ed2eb4	437	AliHLTTracksData* outPtr = ( AliHLTTracksData* )( outputPtr + size );
b7ed2eb4	438	AliHLTExternalTrackParam* currOutTrack = outPtr->fTracklets;
9af5a71c	439
b7ed2eb4	440	blockSize = ( ( AliHLTUInt8_t * )currOutTrack ) - ( ( AliHLTUInt8_t * )outPtr );
9af5a71c	441
b3a48f51	442	if ( size + blockSize > maxBufferSize ) {
	443	HLTWarning( "Output buffer size exceed (buffer size %d, current size %d), tracks are not stored", maxBufferSize, size + blockSize );
	444	iResult = -ENOSPC;
	445	break;
	446	}
	447
b7ed2eb4	448	outPtr->fCount = 0;
365eee5d	449	AliHLTITSTrack *tracks=0;
	450	int nTracks = 0;
	451	if( iOut==0 ){
	452	tracks = fTracker->Tracks();
	453	nTracks = fTracker->NTracks();
	454	} else{
	455	tracks = fTracker->ITSOutTracks();
	456	nTracks = fTracker->NITSOutTracks();
	457	}
b7ed2eb4	458
	459	for ( int itr = 0; itr < nTracks; itr++ ) {
	460	AliHLTITSTrack &t = tracks[itr];
	461	int id = tracksTPCId[t.TPCtrackId()];
	462	int nClusters = t.GetNumberOfClusters();
	463	if( iOut==0 && nClusters>0 ) nITSUpdated++;
	464
	465	unsigned int dSize = sizeof( AliHLTExternalTrackParam ) + nClusters * sizeof( unsigned int );
	466
	467	if ( size + blockSize + dSize > maxBufferSize ) {
	468	HLTWarning( "Output buffer size exceed (buffer size %d, current size %d), %d tracks are not stored", maxBufferSize, size + blockSize + dSize, nTracks - itr + 1 );
	469	iResult = -ENOSPC;
	470	break;
	471	}
	472
	473	currOutTrack->fAlpha = t.GetAlpha();
	474	currOutTrack->fX = t.GetX();
	475	currOutTrack->fY = t.GetY();
	476	currOutTrack->fZ = t.GetZ();
	477	currOutTrack->fLastX = 0;
	478	currOutTrack->fLastY = 0;
	479	currOutTrack->fLastZ = 0;
	480	currOutTrack->fq1Pt = t.GetSigned1Pt();
	481	currOutTrack->fSinPsi = t.GetSnp();
	482	currOutTrack->fTgl = t.GetTgl();
	483	for( int i=0; i<15; i++ ) currOutTrack->fC[i] = t.GetCovariance()[i];
	484	currOutTrack->fTrackID = id;
	485	currOutTrack->fFlags = 0;
	486	currOutTrack->fNPoints = nClusters;
	487	for ( int i = 0; i < nClusters; i++ ) currOutTrack->fPointIDs[i] = t.GetClusterIndex( i );
	488	currOutTrack = ( AliHLTExternalTrackParam* )( (( Byte_t * )currOutTrack) + dSize );
	489	blockSize += dSize;
	490	outPtr->fCount++;
6edb0fb5	491	}
9af5a71c	492
6edb0fb5	493
b7ed2eb4	494	AliHLTComponentBlockData resultData;
	495	FillBlockData( resultData );
	496	resultData.fOffset = 0;
	497	resultData.fSize = blockSize;
	498	if( iOut==0 ){
	499	resultData.fDataType = kAliHLTDataTypeTrack\|kAliHLTDataOriginITS;
	500	} else {
	501	resultData.fDataType = kAliHLTDataTypeTrack\|kAliHLTDataOriginITSOut;
	502	}
57a4102f	503	fBenchmark.AddOutput(resultData.fSize);
b7ed2eb4	504	outputBlocks.push_back( resultData );
	505	size += resultData.fSize;
	506	}
6edb0fb5	507	}
b7ed2eb4	508
57a4102f	509	fBenchmark.Stop(0);
9eee44f6	510
9eee44f6	511	// Set log level to "Warning" for on-line system monitoring
57a4102f	512	HLTInfo( "ITS Tracker: output %d tracks; input %d clusters, %d tracks",
57a4102f	513	nITSUpdated, nClustersTotal, tracksTPC.size() );
9eee44f6	514
57a4102f	515	HLTInfo(fBenchmark.GetStatistics());
6edb0fb5	516	return iResult;
6edb0fb5	517	}