com.pixelmed.scpecg

Class HuffmanTable

java.lang.Object

com.pixelmed.scpecg.HuffmanTable

Direct Known Subclasses:

DefaultHuffmanTable

public class HuffmanTable
extends java.lang.Object

A class to store Huffman Tables, either as read from an SCP-ECG file or the default as specified in the SCP-ECG standard.

See Also:

DefaultHuffmanTable, HuffmanDecoder

Field Summary

Fields

Modifier and Type	Field and Description
protected long[]	baseCode
protected int[]	baseValueRepresentedByBaseCode
protected int[]	numberOfBitsInEntireCode
protected int[]	numberOfBitsInPrefix
protected int	numberOfCodeStructuresInTable
protected int[]	tableModeSwitch

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	HuffmanTable()
	HuffmanTable(int numberOfCodeStructuresInTable, int[] numberOfBitsInPrefix, int[] numberOfBitsInEntireCode, int[] tableModeSwitch, int[] baseValueRepresentedByBaseCode, long[] baseCode) Construct a Huffman Table from the supplied data as read from an SCP-ECG file.

Method Summary

Modifier and Type	Method and Description
long[]	getBaseCode()
int[]	getBaseValueRepresentedByBaseCode()
int[]	getNumberOfBitsInEntireCode()
int[]	getNumberOfBitsInPrefix()
int	getNumberOfCodeStructuresInTable()
int[]	getTableModeSwitch()
java.lang.String	toString() Dump the tables as a String.

Methods inherited from class java.lang.Object

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

Field Detail

baseCode

protected long[] baseCode

baseValueRepresentedByBaseCode

protected int[] baseValueRepresentedByBaseCode

numberOfBitsInEntireCode

protected int[] numberOfBitsInEntireCode

numberOfBitsInPrefix

protected int[] numberOfBitsInPrefix

numberOfCodeStructuresInTable

protected int numberOfCodeStructuresInTable

tableModeSwitch

protected int[] tableModeSwitch

Constructor Detail

HuffmanTable

protected HuffmanTable()

HuffmanTable

public HuffmanTable(int numberOfCodeStructuresInTable,
                    int[] numberOfBitsInPrefix,
                    int[] numberOfBitsInEntireCode,
                    int[] tableModeSwitch,
                    int[] baseValueRepresentedByBaseCode,
                    long[] baseCode)

Construct a Huffman Table from the supplied data as read from an SCP-ECG file.

Parameters:

numberOfCodeStructuresInTable - the number of codes (i.e. the size of all the array parameters)

numberOfBitsInPrefix - for each code, the number of prefix bits for each code (i.e. the Huffman code)

numberOfBitsInEntireCode - for each code, if > numberOfBitsInPrefix, used to find the number of original bits encoded

tableModeSwitch - for each code, a flag to indicate to switch to another table (1 indicates no switch)

baseValueRepresentedByBaseCode - for each code, the value that the code represents

baseCode - the codes (with the order of bits reversed)

Method Detail

getBaseCode

public long[] getBaseCode()

getBaseValueRepresentedByBaseCode

public int[] getBaseValueRepresentedByBaseCode()

getNumberOfBitsInEntireCode

public int[] getNumberOfBitsInEntireCode()

getNumberOfBitsInPrefix

public int[] getNumberOfBitsInPrefix()

getNumberOfCodeStructuresInTable

public int getNumberOfCodeStructuresInTable()

getTableModeSwitch

public int[] getTableModeSwitch()

toString

public java.lang.String toString()

Dump the tables as a String.

Overrides:

toString in class java.lang.Object

Returns:

the tables as a String