Steering routine for conversion from RAW to SDigits added.

diff --git a/STEER/AliSimulation.cxx b/STEER/AliSimulation.cxx
index 73097dcd25ac2f08e9cd1585b898feda0f599073..7fa5f2058a2a35ce61bea84dc3a671b3b32268e3 100644 (file)
--- a/STEER/AliSimulation.cxx
+++ b/STEER/AliSimulation.cxx
@@ -128,6 +128,10 @@
 #include "AliVertexGenFile.h"
 #include "AliCentralTrigger.h"
 #include "AliCTPRawData.h"
+#include "AliRawReaderFile.h"
+#include "AliESD.h"
+#include "AliHeader.h"
+#include "AliGenEventHeader.h"
 
 ClassImp(AliSimulation)
 
@@ -159,7 +163,8 @@ AliSimulation::AliSimulation(const char* configFileName, const char* cdbUri,
   fUseBkgrdVertex(kTRUE),
   fRegionOfInterest(kFALSE),
   fCDBUri(cdbUri),
-  fSpecCDBUri()
+  fSpecCDBUri(),
+  fEmbeddingFlag(kFALSE)
 {
 // create simulation object with default parameters
 
@@ -192,7 +197,8 @@ AliSimulation::AliSimulation(const AliSimulation& sim) :
   fUseBkgrdVertex(sim.fUseBkgrdVertex),
   fRegionOfInterest(sim.fRegionOfInterest),
   fCDBUri(sim.fCDBUri),
-  fSpecCDBUri()
+  fSpecCDBUri(),
+  fEmbeddingFlag(sim.fEmbeddingFlag)
 {
 // copy constructor
 
@@ -590,6 +596,12 @@ void AliSimulation::MergeWith(const char* fileName, Int_t nSignalPerBkgrd)
   fBkgrdFileNames->Add(fileNameStr);
 }
 
+void AliSimulation::EmbedInto(const char* fileName, Int_t nSignalPerBkgrd)
+{
+// add a file with background events for embeddin
+  MergeWith(fileName, nSignalPerBkgrd);
+  fEmbeddingFlag = kTRUE;
+}
 
 //_____________________________________________________________________________
 Bool_t AliSimulation::Run(Int_t nEvents)
@@ -614,7 +626,7 @@ Bool_t AliSimulation::Run(Int_t nEvents)
     if (!gGeoManager) if (fStopOnError) return kFALSE;
     if (!MisalignGeometry()) if (fStopOnError) return kFALSE;
   }
-
+  
   // hits -> summable digits
   if (!fMakeSDigits.IsNull()) {
     if (!RunSDigitization(fMakeSDigits)) if (fStopOnError) return kFALSE;
@@ -914,6 +926,7 @@ Bool_t AliSimulation::RunDigitization(const char* detectors,
   if (fBkgrdFileNames) nStreams = fBkgrdFileNames->GetEntriesFast() + 1;
   Int_t signalPerBkgrd = GetNSignalPerBkgrd();
   AliRunDigitizer* manager = new AliRunDigitizer(nStreams, signalPerBkgrd);
+  // manager->SetEmbeddingFlag(fEmbeddingFlag);
   manager->SetInputStream(0, fGAliceFileName.Data());
   for (Int_t iStream = 1; iStream < nStreams; iStream++) {
     const char* fileName = ((TObjString*)
@@ -933,6 +946,7 @@ Bool_t AliSimulation::RunDigitization(const char* detectors,
     if (IsSelected(det->GetName(), detStr) && 
        !IsSelected(det->GetName(), detExcl)) {
       AliDigitizer* digitizer = det->CreateDigitizer(manager);
+      
       if (!digitizer) {
        AliError(Form("no digitizer for %s", det->GetName()));
        if (fStopOnError) return kFALSE;
@@ -1257,8 +1271,9 @@ Int_t AliSimulation::GetNSignalPerBkgrd(Int_t nEvents) const
   // get the number of signal events
   if (nEvents <= 0) {
     AliRunLoader* runLoader = 
-      AliRunLoader::Open(fGAliceFileName.Data(), "SIGNAL");
+       AliRunLoader::Open(fGAliceFileName.Data(), "SIGNAL");
     if (!runLoader) return 1;
+    
     nEvents = runLoader->GetNumberOfEvents();
     delete runLoader;
   }
@@ -1268,12 +1283,12 @@ Int_t AliSimulation::GetNSignalPerBkgrd(Int_t nEvents) const
     // get the number of background events
     const char* fileName = ((TObjString*)
                            (fBkgrdFileNames->At(iBkgrdFile)))->GetName();
-    AliRunLoader* runLoader = 
+    AliRunLoader* runLoader =
       AliRunLoader::Open(fileName, "BKGRD");
     if (!runLoader) continue;
     Int_t nBkgrdEvents = runLoader->GetNumberOfEvents();
     delete runLoader;
-
+  
     // get or calculate the number of signal per background events
     Int_t nSignalPerBkgrd = fBkgrdFileNames->At(iBkgrdFile)->GetUniqueID();
     if (nSignalPerBkgrd <= 0) {
@@ -1328,3 +1343,104 @@ Bool_t AliSimulation::IsSelected(TString detName, TString& detectors) const
 
   return result;
 }
+
+Bool_t AliSimulation::ConvertRaw2SDigits(const char* rawDirectory, const char* esdFileName) 
+{
+//
+// Steering routine  to convert raw data in directory rawDirectory/ to fake SDigits. 
+// These can be used for embedding of MC tracks into RAW data using the standard 
+// merging procedure.
+//
+// If an ESD file is given the reconstructed vertex is taken from it and stored in the event header.
+//
+    if (!gAlice) {
+       AliError("no gAlice object. Restart aliroot and try again.");
+       return kFALSE;
+    }
+    if (gAlice->Modules()->GetEntries() > 0) {
+       AliError("gAlice was already run. Restart aliroot and try again.");
+       return kFALSE;
+    }
+    
+    AliInfo(Form("initializing gAlice with config file %s",fConfigFileName.Data()));
+    StdoutToAliInfo(StderrToAliError(gAlice->Init(fConfigFileName.Data());););
+//
+//  Initialize CDB     
+    InitCDBStorage();
+    AliCDBManager* man = AliCDBManager::Instance();
+    man->SetRun(0); // Should this come from rawdata header ?
+    
+    Int_t iDet;
+    //
+    // Get the runloader
+    AliRunLoader* runLoader = gAlice->GetRunLoader();
+    //
+    // Open esd file if available
+    TFile* esdFile = TFile::Open(esdFileName);
+    Bool_t esdOK = (esdFile != 0);
+    AliESD* esd = new AliESD;
+    TTree* treeESD = 0;
+    if (esdOK) {
+       treeESD = (TTree*) esdFile->Get("esdTree");
+       if (!treeESD) {
+           AliWarning("No ESD tree found");
+           esdOK = kFALSE;
+       } else {
+           treeESD->SetBranchAddress("ESD", &esd);
+       }
+    }
+    //
+    // Create the RawReader
+    AliRawReaderFile* rawReader = new AliRawReaderFile(rawDirectory);
+    //
+    // Get list of detectors
+    TObjArray* detArray = runLoader->GetAliRun()->Detectors();
+    //
+    // Get Header
+    AliHeader* header = runLoader->GetHeader();
+    //
+    // Event loop
+    Int_t nev = 0;
+    while(kTRUE) {
+       if (!(rawReader->NextEvent())) break;
+       //
+       // Detector loop
+       for (iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) {
+           AliModule* det = (AliModule*) detArray->At(iDet);
+           AliInfo(Form("Calling Raw2SDigits for %s\n", det->GetName()));
+           det->Raw2SDigits(rawReader);
+           rawReader->Reset();
+       } // detectors
+
+       //
+       //  If ESD information available obtain reconstructed vertex and store in header.
+       if (esdOK) {
+           treeESD->GetEvent(nev);
+           const AliESDVertex* esdVertex = esd->GetPrimaryVertex();
+           Double_t position[3];
+           esdVertex->GetXYZ(position);
+           AliGenEventHeader* mcHeader = new  AliGenEventHeader("ESD");
+           TArrayF mcV;
+           mcV.Set(3);
+           for (Int_t i = 0; i < 3; i++) mcV[i] = position[i];
+           mcHeader->SetPrimaryVertex(mcV);
+           header->Reset(0,nev);
+           header->SetGenEventHeader(mcHeader);
+           printf("***** Saved vertex %f %f %f \n", position[0], position[1], position[2]);
+       }
+       nev++;
+//
+//      Finish the event
+       runLoader->TreeE()->Fill();
+       runLoader->SetNextEvent();
+    } // events
+ 
+    delete rawReader;
+//
+//  Finish the run 
+    runLoader->CdGAFile();
+    runLoader->WriteHeader("OVERWRITE");
+    runLoader->WriteRunLoader();
+
+    return kTRUE;
+}

diff --git a/STEER/AliSimulation.h b/STEER/AliSimulation.h
index 192b754d70ca24107eff7a3364d8ed5534188512..fc64c355830cab345cc7278fe508a3bd22defe20 100644 (file)
--- a/STEER/AliSimulation.h
+++ b/STEER/AliSimulation.h
@@ -45,6 +45,7 @@ public:
   void           SetMakeSDigits(const char* detectors) 
                    {fMakeSDigits = detectors;};
   void           MergeWith(const char* fileName, Int_t nSignalPerBkgrd = 0);
+  void           EmbedInto(const char* fileName, Int_t nSignalPerBkgrd = 0);
   void           SetUseBkgrdVertex(Bool_t useBkgrdVertex)
                    {fUseBkgrdVertex = useBkgrdVertex;};
   void           SetRegionOfInterest(Bool_t flag) {fRegionOfInterest = flag;};
@@ -102,7 +103,8 @@ public:
   virtual Bool_t ConvertRawFilesToDate(const char* dateFileName = "raw.date");
   virtual Bool_t ConvertDateToRoot(const char* dateFileName = "raw.date",
                                   const char* rootFileName = "raw.root");
-
+  virtual Bool_t ConvertRaw2SDigits(const char* rawDirectory, const char* esdFile = "");
+  
 private:
   AliRunLoader*  LoadRun(const char* mode = "UPDATE") const;
   Int_t          GetNSignalPerBkgrd(Int_t nEvents = 0) const;
@@ -133,7 +135,7 @@ private:
 
   TString       fCDBUri;             // Uri of the default CDB storage
   TObjArray      fSpecCDBUri;         // Array with detector specific CDB storages
-
+  Bool_t         fEmbeddingFlag;      // Flag for embedding
   ClassDef(AliSimulation, 3)  // class for running generation, simulation and digitization
 };