RootConverter Class Reference

Converter for data formats < NSCLDAQ 10.2. More...

#include <RootConvert.h>

Inheritance diagram for RootConverter:

Public Member Functions
	RootConverter ()
	Default constructor.
virtual	~RootConverter ()
	Default destructor. More...
virtual void	Initialize (std::string filein, std::string fileout)
	Adds dchan branch to tree and associates it with the local ddaschannel object. More...
virtual void	DumpData (const CRingItem &item)
	Conversion of CRingItem data and filling of the tree. More...
Public Member Functions inherited from Converter
	Converter ()
	Default constructor. More...
virtual	~Converter ()
	Default destructor. More...
virtual void	Close ()
	Close ROOT file. More...
TFile *	GetFile ()
	Access the output file.
TTree *	GetTree ()
	Access the output tree.

Additional Inherited Members
Protected Attributes inherited from Converter
TFile *	m_fileout
TTree *	m_treeout

Detailed Description

Converter for data formats < NSCLDAQ 10.2.

A concrete implementation of the Converter base class to support the conversion of data built with NSCLDAQ versions prior to 10.2. This class expects a simple physics data structure defined as follows:

struct data_structure { uint32_t size_in_bytes uint32_t* pointer to Pixie16 data format }

The Pixie-16 data format is defined by the Pixie-16 digitizer module. It consists of a minimum of 4 32-bit words for the Pixie16 data header followed by any subsequent optional data. The optional data may include trace data, energy sum data, or QDC data.

The RootConverter object creates a branch in the tree referenced by Converter::m_treepointer named dchan. It holds the ddaschannel objects produced by every call to the RootConverter::DumpData(const CRingItem&) method.

Constructor & Destructor Documentation

RootConverter::~RootConverter ( )

virtual

Default destructor.

Constructs the ddaschannel object pointed to by this class's dchan pointer with its default constructor.

Member Function Documentation

void RootConverter::DumpData ( const CRingItem &  item )

virtual

Conversion of CRingItem data and filling of the tree.

Responsible for converting the data stored in the CRingItem into the ddaschannel object. The majority of the conversion is actually performed by the ddaschannel::UnpackData method, so that this merely strips away the nscldaq information that encloses the Pixie-16 data format (which is what is understood by the ddaschannel::UnpackData method). In this implementation, only the ring item size is stripped away before delegating the remainder of the unpacking task to the ddaschannel object. Following the unpacking, the ddaschannel object holds the data it extracted and this same object is used to fill the tree.

Implements Converter.

void RootConverter::Initialize ( std::string  filein, std::string  fileout  )

virtual

Adds dchan branch to tree and associates it with the local ddaschannel object.

First calls the Converter::Initialize(std::string,std::string) method to create the output file and the tree, then adds the dchan branch to the tree. This branch holds the ddaschannel objects produced by the DumpData(const CRingItem&) method.

Parameters

filein	currently not implemented
fileout	name of the root file to store the outputted data tree

Reimplemented from Converter.

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The documentation for this class was generated from the following files:

• ddasdumper/RootConvert.h
• ddasdumper/RootConvert.cpp