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`java.lang.Object`

`javax.imageio.plugins.jpeg.JPEGHuffmanTable`

`public class `**JPEGHuffmanTable**

`extends Object`

The JPEGHuffmanTable class represents a Huffman table read from a
JPEG image file. The standard JPEG AC and DC chrominance and
luminance values are provided as static fields.

## Field Summary

`static JPEGHuffmanTable`

`StdACChrominance`

- The standard JPEG AC chrominance Huffman table.

`static JPEGHuffmanTable`

`StdACLuminance`

- The standard JPEG AC luminance Huffman table.

`static JPEGHuffmanTable`

`StdDCChrominance`

- The standard JPEG DC chrominance Huffman table.

`static JPEGHuffmanTable`

`StdDCLuminance`

- The standard JPEG DC luminance Huffman table.

## Constructor Summary

`JPEGHuffmanTable(short[] lengths, short[] values)`

- Construct and initialize a Huffman table.

## Method Summary

`short[]`

`getLengths()`

- Retrieve a copy of the array of Huffman code lengths.

`short[]`

`getValues()`

- Retrieve a copy of the array of Huffman values, sorted in order of increasing code length.

`String`

`toString()`

- Create a string representation of this JPEG Huffman table.

### Methods inherited from class java.lang.Object

`clone`

,`equals`

,`extends Object> getClass`

,`finalize`

,`hashCode`

,`notify`

,`notifyAll`

,`toString`

,`wait`

,`wait`

,`wait`

public static final JPEGHuffmanTable StdACChrominance

The standard JPEG AC chrominance Huffman table.

public static final JPEGHuffmanTable StdACLuminance

The standard JPEG AC luminance Huffman table.

public static final JPEGHuffmanTable StdDCChrominance

The standard JPEG DC chrominance Huffman table.

public static final JPEGHuffmanTable StdDCLuminance

The standard JPEG DC luminance Huffman table.

public JPEGHuffmanTable(short[] lengths, short[] values)

Construct and initialize a Huffman table. Copies are created of the array arguments. lengths[index] stores the number of Huffman values with Huffman codes of length index + 1. The values array stores the Huffman values in order of increasing code length.

Parameters:`lengths`

- an array of Huffman code lengths`values`

- a sorted array of Huffman values

Throws:`IllegalArgumentException`

- if either parameter is null, if lengths.length > 16 or values.length > 256, if any value in length or values is negative, or if the parameters do not describe a valid Huffman table

public short[] getLengths()

Retrieve a copy of the array of Huffman code lengths. If the returned array is called lengthcount, there are lengthcount[index] codes of length index + 1.

Returns:- a copy of the array of Huffman code lengths

public short[] getValues()

Retrieve a copy of the array of Huffman values, sorted in order of increasing code length.

Returns:- a copy of the array of Huffman values

JPEGHuffmanTable.java --
Copyright (C) 2006 Free Software Foundation, Inc.
This file is part of GNU Classpath.
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