Package net.sf.jazzlib

Class InflaterHuffmanTree

java.lang.Object

net.sf.jazzlib.InflaterHuffmanTree

public class InflaterHuffmanTree
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static InflaterHuffmanTree	defDistTree
static InflaterHuffmanTree	defLitLenTree
private static final int	MAX_BITLEN
private short[]	tree

Constructor Summary

Constructors

Constructor	Description
InflaterHuffmanTree(byte[] codeLengths)	Constructs a Huffman tree from the array of code lengths.

Method Summary

Modifier and Type	Method	Description
private void	buildTree(byte[] codeLengths)
int	getSymbol(StreamManipulator input)	Reads the next symbol from input.

Methods inherited from class java.lang.Object

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

Field Details

MAX_BITLEN

private static final int MAX_BITLEN

See Also:

• Constant Field Values

tree

private short[] tree

defLitLenTree

public static InflaterHuffmanTree defLitLenTree

defDistTree

public static InflaterHuffmanTree defDistTree

Constructor Details

InflaterHuffmanTree

public InflaterHuffmanTree(byte[] codeLengths)
                    throws DataFormatException

Constructs a Huffman tree from the array of code lengths.

Parameters:

codeLengths - the array of code lengths

Throws:

DataFormatException

Method Details

buildTree

private void buildTree(byte[] codeLengths)
                throws DataFormatException

Throws:

DataFormatException

getSymbol

public int getSymbol(StreamManipulator input)
              throws DataFormatException

Reads the next symbol from input. The symbol is encoded using the huffman tree.

Parameters:

input - the input source.

Returns:

the next symbol, or -1 if not enough input is available.

Throws:

DataFormatException