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java.lang.Objectjavax.imageio.plugins.jpeg.JPEGHuffmanTable
public class JPEGHuffmanTable
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, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
|---|
public static final JPEGHuffmanTable StdACChrominance
public static final JPEGHuffmanTable StdACLuminance
public static final JPEGHuffmanTable StdDCChrominance
public static final JPEGHuffmanTable StdDCLuminance
| Constructor Detail |
|---|
public JPEGHuffmanTable(short[] lengths,
short[] values)
lengths - an array of Huffman code lengthsvalues - a sorted array of Huffman values
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| Method Detail |
|---|
public short[] getLengths()
public short[] getValues()
public String toString()
toString in class ObjectObject.getClass(),
Object.hashCode(),
Class.getName(),
Integer.toHexString(int)
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