Package jj2000.j2k.codestream.reader

Class CBlkInfo

java.lang.Object

jj2000.j2k.codestream.reader.CBlkInfo

public class CBlkInfo
extends Object

This class contains location of code-blocks' piece of codewords (there is one piece per layer) and some other information.

Field Summary

Fields

Modifier and Type	Field	Description
int	ctp	The cumulative number of truncation points
int	h	Height of the code-block
int[]	len	Length of each piece of code-block's codewords
int	msbSkipped	The number of most significant bits which are skipped for this code-block (= Mb-1-bitDepth).
int[]	ntp	The number of truncation point for each layer
int[]	off	Offset of each piece of code-block's codewords in the file
int[]	pktIdx	Index of the packet where each layer has been found
int[][]	segLen	The length of each segment (used with regular termination or in selective arithmetic bypass coding mode)
int	ulx	Upper-left x-coordinate of the code-block (relative to the tile)
int	uly	Upper-left y-coordinate of the code-block (relative to the tile)
int	w	Width of the code-block

Constructor Summary

Constructors

Constructor	Description
CBlkInfo(int ulx, int uly, int w, int h, int nl)	Constructs a new instance with specified number of layers and code-block coordinates.

Method Summary

Modifier and Type	Method	Description
void	addNTP(int l, int newtp)	Adds the number of new truncation for specified layer.
String	toString()	Object information in a string.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

ulx

public int ulx

Upper-left x-coordinate of the code-block (relative to the tile)

uly

public int uly

Upper-left y-coordinate of the code-block (relative to the tile)

w

public int w

Width of the code-block

h

public int h

Height of the code-block

msbSkipped

public int msbSkipped

The number of most significant bits which are skipped for this code-block (= Mb-1-bitDepth). See VM text

len

public int[] len

Length of each piece of code-block's codewords

off

public int[] off

Offset of each piece of code-block's codewords in the file

ntp

public int[] ntp

The number of truncation point for each layer

ctp

public int ctp

The cumulative number of truncation points

segLen

public int[][] segLen

The length of each segment (used with regular termination or in selective arithmetic bypass coding mode)

pktIdx

public int[] pktIdx

Index of the packet where each layer has been found

Constructor Detail

CBlkInfo

public CBlkInfo(int ulx,
                int uly,
                int w,
                int h,
                int nl)

Constructs a new instance with specified number of layers and code-block coordinates. The number corresponds to the maximum piece of codeword for one code-block.

Parameters:

ulx - The uper-left x-coordinate

uly - The uper-left y-coordinate

w - Width of the code-block

h - Height of the code-block

nl - The number of layers

Method Detail

addNTP

public void addNTP(int l,
                   int newtp)

Adds the number of new truncation for specified layer.

Parameters:

l - layer index

newtp - Number of new truncation points

toString

public String toString()

Object information in a string.

Overrides:

toString in class Object

Returns:

Object information