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 and 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 and 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 and 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