Byte swapper. More...

#include <EndianSwapper.h>

Collaboration diagram for Isis::EndianSwapper:

Public Member Functions
	EndianSwapper (QString inputEndian)
	Constructs an EndianSwapper object, determining whether swapping of bytes actually needs to occur and sets the direction of swapping.

	~EndianSwapper ()
	Destroys the EndianSwapper object.

double	Double (void *buf)
	Swaps a double precision value.

float	Float (void *buf)
	Swaps a floating point value.

int	ExportFloat (void *buf)
	Swaps a floating point value for Exporting.

int	Int (void *buf)
	Swaps a 4 byte integer value.

long long int	LongLongInt (void *buf)
	Swaps an 8 byte integer value.

short int	ShortInt (void *buf)
	Swaps a short integer value.

unsigned short int	UnsignedShortInt (unsigned short int *buf)
	Swaps an unsigned short integer value.

bool	willSwap () const

Private Attributes
bool	p_needSwap
	Indicates whether bytes need to be swapped.

int	p_swapDirection
	Indicates which direction to increment the pointer for swapping.

union {
double p_double
	Union containing the output double precision value with swapped bytes.

float p_float
	Union containing the output floating point value with swapped bytes.

int p_int
	Union containing the output 4 byte integer value with swapped bytes.

long long int p_longLongInt
	Union containing the output 8 byte integer value with swapped bytes.

short int p_shortInt
	Union containing the output 2 byte integer value with swapped bytes.

unsigned short int p_uShortInt
	Union containing the output unsigned short integer value with swapped bytes.

char p_char [8]
	Union containing the output value in byte format.

}	p_swapper

Detailed Description

Byte swapper.

This class is used to swap bytes on data that is from a different machine architecture.

Author: 2002-07-10 Tracie Sucharski

Todo:: This class needs an example.

History:

2003-05-16 Stuart Sides modified schema from astrogeology...isis.astrogeology.

2004-03-18 Stuart Sides used Endian.h instead of the linux gcc endian.h to figure the system's endian type.

2008-08-14 Christopher Austin - Added ExportFloat() for exporting real data to the non-native endians. i.e. exporting to msb on a lsb system

2009-04-16 Steven Lambright - Added Int and LongLongInt. Long was not added because it is 4 bytes on 32-bit linux and 8 bytes on 64-bit linux.

Definition at line 53 of file EndianSwapper.h.

Constructor & Destructor Documentation

Isis::EndianSwapper::EndianSwapper ( QString inputEndian )

Constructs an EndianSwapper object, determining whether swapping of bytes actually needs to occur and sets the direction of swapping.

Parameters

inputEndian Byte order of input value (MSB or LSB).

Definition at line 39 of file EndianSwapper.cpp.

References _FILEINFO_, Isis::IsLsb(), and Isis::IsMsb().

Isis::EndianSwapper::~EndianSwapper ( )

Destroys the EndianSwapper object.

Definition at line 62 of file EndianSwapper.cpp.

Member Function Documentation

double Isis::EndianSwapper::Double ( void * buf )

Swaps a double precision value.

Parameters

buf	Input double precision value to swap.

Definition at line 71 of file EndianSwapper.cpp.

Referenced by Isis::ImportPdsTable::extractBinary(), Isis::ExportPdsTable::Pack(), Isis::ProcessImport::ProcessBil(), Isis::ProcessImport::ProcessBip(), and Isis::ProcessImport::ProcessBsq().

int Isis::EndianSwapper::ExportFloat ( void * buf )

Swaps a floating point value for Exporting.

Definition at line 115 of file EndianSwapper.cpp.

Referenced by Isis::ProcessExport::isisOut32().

float Isis::EndianSwapper::Float ( void * buf )

Swaps a floating point value.

Parameters

buf	Input floating point value to swap.

Definition at line 94 of file EndianSwapper.cpp.

Referenced by Isis::ImportPdsTable::extractBinary(), Isis::ExportPdsTable::Pack(), Isis::ProcessImport::ProcessBil(), Isis::ProcessImport::ProcessBip(), and Isis::ProcessImport::ProcessBsq().

int Isis::EndianSwapper::Int ( void * buf )

Swaps a 4 byte integer value.

Parameters

buf	Input integer value to swap.

Definition at line 124 of file EndianSwapper.cpp.

Referenced by Isis::ImportPdsTable::extractBinary(), and Isis::ExportPdsTable::Pack().

long long int Isis::EndianSwapper::LongLongInt ( void * buf )

Swaps an 8 byte integer value.

Parameters

buf	Input integer value to swap.

Definition at line 146 of file EndianSwapper.cpp.

short int Isis::EndianSwapper::ShortInt ( void * buf )

Swaps a short integer value.

Parameters

buf	Input short integer value to swap.

Definition at line 168 of file EndianSwapper.cpp.

Referenced by Isis::ProcessExport::isisOut16s(), Isis::ProcessImport::ProcessBil(), Isis::ProcessImport::ProcessBip(), and Isis::ProcessImport::ProcessBsq().

unsigned short int Isis::EndianSwapper::UnsignedShortInt ( unsigned short int * buf )

Swaps an unsigned short integer value.

Parameters

buf	Input unsigned short integer value to swap.

Definition at line 191 of file EndianSwapper.cpp.

Referenced by Isis::ProcessExport::isisOut16u(), Isis::ProcessImport::ProcessBil(), Isis::ProcessImport::ProcessBip(), and Isis::ProcessImport::ProcessBsq().

Member Data Documentation

char Isis::EndianSwapper::p_char[8]

Union containing the output value in byte format.

Definition at line 85 of file EndianSwapper.h.

double Isis::EndianSwapper::p_double

Union containing the output double precision value with swapped bytes.

Definition at line 70 of file EndianSwapper.h.

float Isis::EndianSwapper::p_float

Union containing the output floating point value with swapped bytes.

Definition at line 72 of file EndianSwapper.h.

int Isis::EndianSwapper::p_int

Union containing the output 4 byte integer value with swapped bytes.

Definition at line 74 of file EndianSwapper.h.

long long int Isis::EndianSwapper::p_longLongInt

Union containing the output 8 byte integer value with swapped bytes.

Definition at line 76 of file EndianSwapper.h.

bool Isis::EndianSwapper::p_needSwap

private

Indicates whether bytes need to be swapped.

Definition at line 56 of file EndianSwapper.h.

short int Isis::EndianSwapper::p_shortInt

Union containing the output 2 byte integer value with swapped bytes.

Definition at line 78 of file EndianSwapper.h.

int Isis::EndianSwapper::p_swapDirection

private

Indicates which direction to increment the pointer for swapping.

(Possible values: -1,1)

Definition at line 61 of file EndianSwapper.h.

unsigned short int Isis::EndianSwapper::p_uShortInt

Union containing the output unsigned short integer value with swapped bytes.

Definition at line 83 of file EndianSwapper.h.

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

src/base/objs/EndianSwapper/EndianSwapper.h
src/base/objs/EndianSwapper/EndianSwapper.cpp

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation