ESD (Error Sensitivity Descriptor) Marker segment. More...

#include <jpwl.h>

Data Fields
unsigned char	addrm
	codestream addressing mode [0=packet, 1=byte range, 2=packet range, 3=reserved]
unsigned char	ad_size
	size of codestream addresses [2/4 bytes]
unsigned char	senst
	type of sensitivity [0=relative error, 1=MSE, 2=MSE reduction, 3=PSNR, 4=PSNR increment, 5=MAXERR (absolute peak error), 6=TSE (total squared error), 7=reserved
unsigned char	se_size
	size of sensitivity data (1/2 bytes)
Marker segment fields
unsigned short int	Lesd
	two bytes for the length of ESD MS, exluding the marker itself (4 to 65535 bytes)
unsigned short int	Cesd
	two bytes, component of error sensitivity
unsigned char	Pesd
	one byte, signals JPWL techniques adoption
unsigned char *	data
	ESD data, variable length.
Fields set by esd_create (only internal use)
int	numcomps
	number of components in the image
int	tileno
	tile where this marker has been placed (-1 means MH)
unsigned long int	svalnum
	number of sensitivity values
size_t	sensval_size
	size of a single sensitivity pair (address+value)

Detailed Description

ESD (Error Sensitivity Descriptor) Marker segment.

Field Documentation

◆ ad_size

unsigned char jpwl_esd_ms::ad_size

size of codestream addresses [2/4 bytes]

Referenced by jpwl_esd_create(), and jpwl_esd_fill().

◆ addrm

unsigned char jpwl_esd_ms::addrm

codestream addressing mode [0=packet, 1=byte range, 2=packet range, 3=reserved]

Referenced by jpwl_esd_create(), and jpwl_esd_fill().

◆ Cesd

unsigned short int jpwl_esd_ms::Cesd

two bytes, component of error sensitivity

Referenced by jpwl_esd_create(), and jpwl_esd_write().

◆ data

unsigned char* jpwl_esd_ms::data

ESD data, variable length.

Referenced by jpwl_esd_create(), and jpwl_esd_fill().

◆ Lesd

unsigned short int jpwl_esd_ms::Lesd

two bytes for the length of ESD MS, exluding the marker itself (4 to 65535 bytes)

Referenced by jpwl_esd_create(), jpwl_esd_write(), and jpwl_prepare_marks().

◆ numcomps

int jpwl_esd_ms::numcomps

number of components in the image

Referenced by jpwl_esd_create(), jpwl_esd_fill(), and jpwl_esd_write().

◆ Pesd

unsigned char jpwl_esd_ms::Pesd

one byte, signals JPWL techniques adoption

Referenced by jpwl_esd_create(), and jpwl_esd_write().

◆ se_size

unsigned char jpwl_esd_ms::se_size

size of sensitivity data (1/2 bytes)

Referenced by jpwl_esd_create(), and jpwl_esd_fill().

◆ senst

unsigned char jpwl_esd_ms::senst

type of sensitivity [0=relative error, 1=MSE, 2=MSE reduction, 3=PSNR, 4=PSNR increment, 5=MAXERR (absolute peak error), 6=TSE (total squared error), 7=reserved

Referenced by jpwl_esd_create(), and jpwl_esd_fill().