class for representing an NITF image segment as an LTIImageReader More...

#include <ImageReader.h>

Inheritance diagram for Nitf::ImageReader:

Public Member Functions
const char *	getIID1 () const
	returns the IID1 field for the segment
lt_int64	getPhysicalFileSize () const
NITFReaderManager &	getManager () const
Format	getFormat () const
	returns the compression format of the segment
Layout	getLayout () const
	returns the pixel layout of the segment
bool	isBlocked () const
	returns true iff the image segment is in blocked form
bool	isMasked () const
	returns true iff block masking is used in the image segment
int	getSegmentNumber () const
	returns the index of this image segment
const ImageSegmentMetadata *	getImageMetadata () const
	returns the image segment metadata object for this segment
const SecurityMetadata *	getSecurityMetadata () const
	returns the security metadata object for this segment
LT_STATUS	getDimsAtMag (double mag, lt_uint32 &width, lt_uint32 &height) const =0
	get image width and height at given magnification
Protected Member Functions
	~ImageReader (void)
	ImageReader (bool supportBandSelection)
const char *	getSourceName (void) const
LT_STATUS	init (LTIOStreamInf stream, NITFReaderManager manager, const ImageSegment *imageSegment, bool useWorldFile)
LT_STATUS	addUnderlyingMetadata (const LTIImageStage &image)
LTIScene	computeBlockedScene (const LTIScene &scene) const
LT_STATUS	copyIntoUserBuffer (const LTIScene &dstScene, LTISceneBuffer &dstBuffer) const
bool	activeSceneContains (const LTIScene &scene) const
void	putBlockIntoBuffer_SEQ (LTISceneBuffer &cBuffer, lt_uint8 *buf, lt_uint32 blockRow, lt_uint32 blockCol, lt_uint32 blockBand) const
void	putBlockIntoBuffer_BLOCK (LTISceneBuffer &cBuffer, lt_uint8 *buf, lt_uint32 blockRow, lt_uint32 blockCol) const
void	putBlockIntoBuffer_PIXEL (LTISceneBuffer &cBuffer, lt_uint8 *buf, lt_uint32 blockRow, lt_uint32 blockCol) const
void	putBlockIntoBuffer_ROW (LTISceneBuffer &cBuffer, lt_uint8 *buf, lt_uint32 blockRow, lt_uint32 blockCol) const
Protected Attributes
LTIOStreamInf *	m_stream
NITFReaderManager *	m_manager
const ImageSegment *	m_imageSegment
const FileHeader *	m_fileHeader
LTReusableBuffer *	m_reusableBuffer
LTIScene *	m_activeScene
LTISceneBuffer *	m_activeSceneBuffer

Detailed Description

This class provides support for representing an NITF image segment as an LTIImageReader, from which you can extract pixel data. ImageReader objects are not to be created directly; the NITFReaderManager class contains a createReader() function for this purpose.

Definition at line 46 of file ImageReader.h.

Constructor & Destructor Documentation

Nitf::ImageReader::~ImageReader ( void ) [protected]

Nitf::ImageReader::ImageReader ( bool supportBandSelection ) [protected]

Member Function Documentation

bool Nitf::ImageReader::activeSceneContains ( const LTIScene & scene ) const [protected]

LT_STATUS Nitf::ImageReader::addUnderlyingMetadata ( const LTIImageStage & image ) [protected]

LTIScene Nitf::ImageReader::computeBlockedScene ( const LTIScene & scene ) const [protected]

LT_STATUS Nitf::ImageReader::copyIntoUserBuffer	(	const LTIScene &	dstScene,
		LTISceneBuffer &	dstBuffer
	)		const `[protected]`

LT_STATUS Nitf::ImageReader::getDimsAtMag	(	double	mag,
		lt_uint32 &	width,
		lt_uint32 &	height
	)		const `[pure virtual]`

This function returns the width and height of the image, in pixels, relative to the given magnification.

Parameters:

mag	magnification to determine width at
width	the image width at the magnification
height	the image height at the magnification

Returns:: status code indicating success or failure

Reimplemented from LTIImageReader.

Format Nitf::ImageReader::getFormat ( ) const

const char* Nitf::ImageReader::getIID1 ( ) const

const ImageSegmentMetadata* Nitf::ImageReader::getImageMetadata ( ) const

Layout Nitf::ImageReader::getLayout ( ) const

NITFReaderManager& Nitf::ImageReader::getManager ( ) const

lt_int64 Nitf::ImageReader::getPhysicalFileSize ( ) const

const SecurityMetadata* Nitf::ImageReader::getSecurityMetadata ( ) const

int Nitf::ImageReader::getSegmentNumber ( ) const

const char* Nitf::ImageReader::getSourceName ( void ) const [protected, virtual]

Implements LTIImageReader.

LT_STATUS Nitf::ImageReader::init	(	LTIOStreamInf *	stream,
		NITFReaderManager *	manager,
		const ImageSegment *	imageSegment,
		bool	useWorldFile
	)		`[protected]`

bool Nitf::ImageReader::isBlocked ( ) const

bool Nitf::ImageReader::isMasked ( ) const

void Nitf::ImageReader::putBlockIntoBuffer_BLOCK	(	LTISceneBuffer &	cBuffer,
		lt_uint8 *	buf,
		lt_uint32	blockRow,
		lt_uint32	blockCol
	)		const `[protected]`

void Nitf::ImageReader::putBlockIntoBuffer_PIXEL	(	LTISceneBuffer &	cBuffer,
		lt_uint8 *	buf,
		lt_uint32	blockRow,
		lt_uint32	blockCol
	)		const `[protected]`

void Nitf::ImageReader::putBlockIntoBuffer_ROW	(	LTISceneBuffer &	cBuffer,
		lt_uint8 *	buf,
		lt_uint32	blockRow,
		lt_uint32	blockCol
	)		const `[protected]`

void Nitf::ImageReader::putBlockIntoBuffer_SEQ	(	LTISceneBuffer &	cBuffer,
		lt_uint8 *	buf,
		lt_uint32	blockRow,
		lt_uint32	blockCol,
		lt_uint32	blockBand
	)		const `[protected]`