This class is responsible for parsing a NITF 2.1 data mask table. More...

#include <vil_nitf2_data_mask_table.h>

Public Member Functions
	vil_nitf2_data_mask_table (unsigned int numBlocksX, unsigned int numBlocksY, unsigned int numBands, const std::string &imode)

bool	parse (vil_stream *stream)

bool	has_offset_table () const
	If this function returns true, then you may call. More...

bool	has_pad_pixel_table () const
	If this function returns true, then you may call. More...

vxl_uint_32	blocked_image_data_offset () const

vxl_uint_32	block_band_present (unsigned int block_x, unsigned int block_y, int band=-1) const
	Returns true iff this block is present in the data. False otherwise. More...

vxl_uint_32	block_band_offset (unsigned int block_x, unsigned int block_y, int band=-1) const
	if imode == "S", then the band argument is used and I will return the offset to 'band' if imode != "S", then the band argument is ignored, and I will return the offset to the beginning of the requested block More...

vxl_uint_32	pad_pixel (unsigned int block_x, unsigned int block_y, int band) const
	band argument is ignored if imode != "S"... More...

vxl_uint_32	block_band_has_pad (unsigned int block_x, unsigned int block_y, int band=-1) const

Static Public Member Functions
static void	maybe_endian_swap (char *a, unsigned sizeOfAInBytes, vil_pixel_format pixFormat)

static void	maybe_endian_swap (char *a, unsigned sizeOfAInBytes, unsigned int bytesPerSample)

Protected Attributes
vxl_uint_32	IMDATOFF

vxl_uint_16	BMRLNTH

vxl_uint_16	TMRLNTH

vxl_uint_16	TPXCDLNTH

vxl_uint_32	TPXCD

std::vector< std::vector< std::vector< vxl_uint_32 > > >	BMR_n_BND_m

std::vector< std::vector< std::vector< vxl_uint_32 > > >	TMR_n_BND_m

unsigned int	num_blocks_x

unsigned int	num_blocks_y

unsigned int	num_bands

std::string	i_mode

Detailed Description

This class is responsible for parsing a NITF 2.1 data mask table.

When present, a vil_nitf2_image_subheader() will use this class to extract the table from the file. It reads a vil_stream, via the parse() method and will return false if it failed.

Definition at line 24 of file vil_nitf2_data_mask_table.h.

Constructor & Destructor Documentation

◆ vil_nitf2_data_mask_table()

vil_nitf2_data_mask_table::vil_nitf2_data_mask_table	(	unsigned int	numBlocksX,
		unsigned int	numBlocksY,
		unsigned int	numBands,
		const std::string &	imode
	)

Definition at line 15 of file vil_nitf2_data_mask_table.cxx.

Member Function Documentation

◆ block_band_has_pad()

vxl_uint_32 vil_nitf2_data_mask_table::block_band_has_pad	(	unsigned int	block_x,
		unsigned int	block_y,
		int	band = `-1`
	)		const

Definition at line 213 of file vil_nitf2_data_mask_table.cxx.

◆ block_band_offset()

vxl_uint_32 vil_nitf2_data_mask_table::block_band_offset	(	unsigned int	block_x,
		unsigned int	block_y,
		int	band = `-1`
	)		const

if imode == "S", then the band argument is used and I will return the offset to 'band' if imode != "S", then the band argument is ignored, and I will return the offset to the beginning of the requested block

Definition at line 111 of file vil_nitf2_data_mask_table.cxx.

◆ block_band_present()

vxl_uint_32 vil_nitf2_data_mask_table::block_band_present	(	unsigned int	block_x,
		unsigned int	block_y,
		int	band = `-1`
	)		const

Returns true iff this block is present in the data. False otherwise.

If this returns false, then there is not sense calling block_band_offset for this band/block combination. It will return 0xFFFFFFFF. If this returns false, then this entire block/band is considered to be blank.

Definition at line 202 of file vil_nitf2_data_mask_table.cxx.