/* ======================================================================== *\
!
! *
! * This file is part of MARS, the MAGIC Analysis and Reconstruction
! * Software. It is distributed to you in the hope that it can be a useful
! * and timesaving tool in analysing Data of imaging Cerenkov telescopes.
! * It is distributed WITHOUT ANY WARRANTY.
! *
! * Permission to use, copy, modify and distribute this software and its
! * documentation for any purpose is hereby granted without fee,
! * provided that the above copyright notice appear in all copies and
! * that both that copyright notice and this permission notice appear
! * in supporting documentation. It is provided "as is" without express
! * or implied warranty.
! *
!
!
!   Author(s): Javier Lopez 12/2003 <mailto:jlopez@ifae.es>
!
!   Copyright: MAGIC Software Development, 2000-2001
!
!
\* ======================================================================== */

//////////////////////////////////////////////////////////////////////////////
//                                                                          //
//   MCalibrate                                                             //
//                                                                          //
//   This task takes the integrated charge from MExtractedSignal and apply  //
//   the calibration constants from MCalibraitionCam to the charge. Then    //
//   stores number of photons obtained in MCerPhotEvt.                      //
//                                                                          //
//   Input Containers:                                                      //
//                                                                          //     
//   MGeomCam                                                               //
//   MExtractedSingal                                                       //
//   MCalibrationCam                                                        //
//                                                                          //
//   Output Containers:                                                     //
//                                                                          //
//   MCerPhotEvt                                                            //
//                                                                          //
//////////////////////////////////////////////////////////////////////////////

#include "MCalibrate.h"

#include "MLog.h"
#include "MLogManip.h"

#include "MParList.h"
#include "MH.h"

#include "MGeomCam.h"

#include "MCalibrationCam.h"
#include "MCalibrationPix.h"

#include "MExtractedSignalCam.h"
#include "MExtractedSignalPix.h"

#include "MCerPhotEvt.h"

#include "MTime.h"
#include "TMath.h"

ClassImp(MCalibrate);

using namespace std;
// --------------------------------------------------------------------------
//
// Default constructor. 
//
MCalibrate::MCalibrate(const char *name, const char *title)
{

    fName  = name  ? name  : "MCalibrate";
    fTitle = title ? title : "Task to calculate the number of photons in one event";

}

// --------------------------------------------------------------------------
//
// The PreProcess searches for the following input containers:
//  - MGeomCam
//  - MCalibrationCam
//  - MExtractedSignalCam
//
// The following output containers are also searched and created if
// they were not found:
//
//  - MCerPhotEvt
//
Int_t MCalibrate::PreProcess(MParList *pList)
{


    fGeomCam = (MGeomCam*)pList->FindObject("MGeomCam");
    if (!fCalibrations)
      {
        *fLog << err << dbginf << "MGeomCam not found ... aborting." << endl;        
        return kFALSE;
      }

    fSignals = (MExtractedSignalCam*)pList->FindObject("MExtractedSignalCam");
    if (!fSignals)
      {
        *fLog << err << dbginf << "MExtractedSignalCam not found ... aborting" << endl;
        return kFALSE;
      }

    fCalibrations = (MCalibrationCam*)pList->FindObject("MCalibrationCam");
    if (!fCalibrations)
      {
        *fLog << err << dbginf << "MCalibrationCam not found ... aborting." << endl;        
        return kFALSE;
      }

    fCerPhotEvt = (MCerPhotEvt*)pList->FindCreateObj("MCerPhotEvt");
    if (!fCerPhotEvt)
      {
        *fLog << err << dbginf << "Cannot create MCerPhotEvt ... aborting" << endl;
        return kFALSE;
      }
    
    return kTRUE;
}


// --------------------------------------------------------------------------
//
//
Int_t MCalibrate::Process()
{

    UInt_t imaxnumpix = fGeomCam->GetNumPixels();
    
    for (UInt_t pixid = 0; pixid < imaxnumpix; pixid++)
    {

	MCalibrationPix &pix = (*fCalibrations)[pixid];

	if (pix.IsValid())
	{
	    MExtractedSignalPix &sig =  (*fSignals)[pixid];

	    Bool_t logain = sig.IsLoGainUsed();
	
	    Float_t signal;
	    if (logain)
		signal = sig.GetExtractedSignalLoGain();
	    else
		signal = sig.GetExtractedSignalHiGain();
	    
	    
	    //      Float_t fCalibraitonConvertionFactor = pix.GetMeanConversionFFactorMethod();
	    Float_t fCalibrationConvertionFactor = pix.GetMeanConversionBlindPixelMethod();
	    Float_t fCalibrationConvertionFactorError = pix.GetErrorConversionBlindPixelMethod();
	    

	    Float_t nphot = signal*fCalibrationConvertionFactor;
	    Float_t nphoterr = signal*fCalibrationConvertionFactorError;;
	    
	    fCerPhotEvt->AddPixel(pixid, nphot, nphoterr);
	}
	else
	    (*fCerPhotEvt)[pixid].SetPixelUnused();
    }

    fCerPhotEvt->FixSize();
    fCerPhotEvt->SetReadyToSave();

    return kTRUE;
}