#include <ossimNitfVqCompressionHeader.h>

Public Member Functions
	ossimNitfVqCompressionOffsetTableData ()

	ossimNitfVqCompressionOffsetTableData (const ossimNitfVqCompressionOffsetTableData &rhs)

	~ossimNitfVqCompressionOffsetTableData ()

const ossimNitfVqCompressionOffsetTableData &	operator= (const ossimNitfVqCompressionOffsetTableData &rhs)

ossim_uint32	getDataLengthInBytes () const

void	clearFields ()

void	parseStream (std::istream &in)

Public Attributes
ossim_uint16	theTableId

ossim_uint32	theNumberOfCompressionLookupRecords

ossim_uint16	theNumberOfValuesPerCompressionLookup

ossim_uint16	theCompressionLookupValueBitLength

ossim_uint32	theCompressionLookupTableOffset

ossim_uint8 *	theData

Detailed Description

Definition at line 17 of file ossimNitfVqCompressionHeader.h.

Constructor & Destructor Documentation

◆ ossimNitfVqCompressionOffsetTableData() [1/2]

ossimNitfVqCompressionOffsetTableData::ossimNitfVqCompressionOffsetTableData ( )

Definition at line 38 of file ossimNitfVqCompressionHeader.cpp.

References clearFields().

       :theData(NULL)
 {
    clearFields();
 }

◆ ossimNitfVqCompressionOffsetTableData() [2/2]

ossimNitfVqCompressionOffsetTableData::ossimNitfVqCompressionOffsetTableData ( const ossimNitfVqCompressionOffsetTableData & rhs )

Definition at line 44 of file ossimNitfVqCompressionHeader.cpp.

References size, theCompressionLookupValueBitLength, theData, theNumberOfCompressionLookupRecords, and theNumberOfValuesPerCompressionLookup.

       :theTableId(rhs.theTableId),
        theNumberOfCompressionLookupRecords(rhs.theNumberOfCompressionLookupRecords),
        theNumberOfValuesPerCompressionLookup(rhs.theNumberOfValuesPerCompressionLookup),
        theCompressionLookupValueBitLength(rhs.theCompressionLookupValueBitLength),
        theCompressionLookupTableOffset(rhs.theCompressionLookupTableOffset),
        theData(NULL)
 
 {
    ossim_uint32 size = (theNumberOfValuesPerCompressionLookup*
                         theNumberOfCompressionLookupRecords*
                         theCompressionLookupValueBitLength)/8;
    if(size > 0)
    {
       theData = new unsigned char[size];
       if(rhs.theData)
       {
          memcpy(theData, rhs.theData, size);
       }
    }
 }

◆ ~ossimNitfVqCompressionOffsetTableData()

ossimNitfVqCompressionOffsetTableData::~ossimNitfVqCompressionOffsetTableData ( )

Definition at line 66 of file ossimNitfVqCompressionHeader.cpp.

References theData.

 {
    if(theData)
    {
       delete [] theData;
       theData = NULL;
    }
 }

Member Function Documentation

◆ clearFields()

void ossimNitfVqCompressionOffsetTableData::clearFields ( )

Definition at line 133 of file ossimNitfVqCompressionHeader.cpp.

References theCompressionLookupTableOffset, theCompressionLookupValueBitLength, theData, theNumberOfCompressionLookupRecords, theNumberOfValuesPerCompressionLookup, and theTableId.

Referenced by ossimNitfVqCompressionOffsetTableData().

 {
    theTableId = 0;
    theNumberOfCompressionLookupRecords = 0;
    theNumberOfValuesPerCompressionLookup = 0;
    theCompressionLookupValueBitLength = 0;
    theCompressionLookupTableOffset = 0;
 
    if(theData)
    {
       delete [] theData;
       theData = NULL;
    }
 }

◆ getDataLengthInBytes()

ossim_uint32 ossimNitfVqCompressionOffsetTableData::getDataLengthInBytes ( ) const

Definition at line 107 of file ossimNitfVqCompressionHeader.cpp.

References theCompressionLookupValueBitLength, theNumberOfCompressionLookupRecords, and theNumberOfValuesPerCompressionLookup.

 {
    return (theNumberOfValuesPerCompressionLookup*
            theNumberOfCompressionLookupRecords*
            theCompressionLookupValueBitLength)/8;
 }

◆ operator=()

const ossimNitfVqCompressionOffsetTableData & ossimNitfVqCompressionOffsetTableData::operator= ( const ossimNitfVqCompressionOffsetTableData & rhs )

Definition at line 75 of file ossimNitfVqCompressionHeader.cpp.

References size, theCompressionLookupTableOffset, theCompressionLookupValueBitLength, theData, theNumberOfCompressionLookupRecords, theNumberOfValuesPerCompressionLookup, and theTableId.

 {
    if(this != &rhs)
    {
       if(theData)
       {
          delete [] theData;
          theData = NULL;
       }
 
       theTableId                            = rhs.theTableId;
       theNumberOfCompressionLookupRecords   = rhs.theNumberOfCompressionLookupRecords;
       theCompressionLookupValueBitLength    = rhs.theCompressionLookupValueBitLength;
       theNumberOfValuesPerCompressionLookup = rhs.theNumberOfValuesPerCompressionLookup;
       theCompressionLookupTableOffset       = rhs.theCompressionLookupTableOffset;
       
       if(rhs.theData)
       {
          ossim_uint32 size = (theNumberOfValuesPerCompressionLookup*
                               theNumberOfCompressionLookupRecords*
                               theCompressionLookupValueBitLength)/8;
          if(size > 0)
          {
             theData = new unsigned char[size];
             memcpy(theData, rhs.theData, size);
          }
       }
    }
    
    return *this;
    
 }

◆ parseStream()

void ossimNitfVqCompressionOffsetTableData::parseStream ( std::istream & in )

Definition at line 114 of file ossimNitfVqCompressionHeader.cpp.

References ossimEndian::getSystemEndianType(), OSSIM_LITTLE_ENDIAN, ossimEndian::swap(), theCompressionLookupTableOffset, theCompressionLookupValueBitLength, theNumberOfCompressionLookupRecords, theNumberOfValuesPerCompressionLookup, and theTableId.

 {
    ossimEndian endian;
    in.read((char*)(&theTableId), 2);
    in.read((char*)(&theNumberOfCompressionLookupRecords),4);
    in.read((char*)(&theNumberOfValuesPerCompressionLookup), 2);
    in.read((char*)(&theCompressionLookupValueBitLength),2);
    in.read((char*)(&theCompressionLookupTableOffset), 4);
 
    if(endian.getSystemEndianType() == OSSIM_LITTLE_ENDIAN)
    {
       endian.swap(theTableId);
       endian.swap(theNumberOfCompressionLookupRecords);
       endian.swap(theNumberOfValuesPerCompressionLookup);
       endian.swap(theCompressionLookupValueBitLength);
       endian.swap(theCompressionLookupTableOffset);
    }
 }