/*

 This macros setup the TPC calibration task AddTaskTPCCalib
 for Pass0.
 - the run number is required to config TPC OCDB
 
 The following calibration components are added to the AliTPCAnalysisTaskcalib task:
 1. AliTPCcalibCalib - redo reconstruction with current calibration
 2. AliTPCcalibTimeGain - TPC time dependent gain calibration
 3. AliTPCcalibTime - TPC time dependent drift time calibration
 4. AliTPCcalibLaser - laser track calibration

*/
//_____________________________________________________________________________
AliAnalysisTask  *AddTaskT0Calib(Int_t runNumber)
{
  //
  // add calibration task
  //
  AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
  if (!mgr) {
    ::Error("AddTaskT0Calib", "No analysis manager to connect to.");
    return NULL;
  }  
  
  // check the input handler
  if (!mgr->GetInputEventHandler()) {
    ::Error("AddTaskT0Calib", "This task requires an input event handler");
    return NULL;
  }  

  // set TPC OCDB parameters
  //ConfigOCDB(runNumber);

  // setup task
 AliT0CalibOffsetChannelsTask  *task1=new AliT0CalibOffsetChannelsTask("CalibObjectsTrain1");
 // SetupCalibTaskTrain1(task1);
  mgr->AddTask(task1);

  AliAnalysisDataContainer *cinput1 = mgr->GetCommonInputContainer();
  if (!cinput1) cinput1 = mgr->CreateContainer("cchain",TChain::Class(), 
                                      AliAnalysisManager::kInputContainer);
  AliAnalysisDataContainer *coutput1 = mgr->CreateContainer("T0Calib",TObjArray::Class(), AliAnalysisManager::kOutputContainer, "AliESDfriends_v1.root");  

  mgr->ConnectInput(task1,0,cinput1);
  mgr->ConnectOutput(task1,1,coutput1);
  return task1;
}