com.sun.media.imageioimpl.plugins.jpeg2000

Class ChannelDefinitionBox

java.lang.Object

com.sun.media.imageioimpl.plugins.jpeg2000.Box

com.sun.media.imageioimpl.plugins.jpeg2000.ChannelDefinitionBox

public class ChannelDefinitionBox
extends Box

This class is designed to represent a Channel Definition Box of JPEG JP2 file format. A Channel Definition Box has a length, and a fixed type of "cdef". Its content defines the type of the image channels: color channel, alpha channel or premultiplied alpha channel.

Field Summary

Fields

Modifier and Type	Field and Description
private short[]	associations
private short[]	channels
private short	num The cached data elements.
private short[]	types

Fields inherited from class com.sun.media.imageioimpl.plugins.jpeg2000.Box

data, extraLength, length, type

Constructor Summary

Constructors

Constructor and Description
ChannelDefinitionBox(byte[] data) Constructs a ChannelDefinitionBox based on the provided content in byte array.
ChannelDefinitionBox(ColorModel colorModel) Constructs a ChannelDefinitionBox based on the provided ColorModel.
ChannelDefinitionBox(Node node) Constructs a ChannelDefinitionBox based on the provided org.w3c.dom.Node.
ChannelDefinitionBox(short[] channel, short[] types, short[] associations) Constructs a ChannelDefinitionBox based on the provided channel definitions.

Method Summary

Modifier and Type	Method and Description
protected void	compose() Composes the content byte array from the data elements.
private static int	computeLength(ColorModel colorModel) Computes the length of this box from the provided ColorModel.
static void	fillBasedOnBands(int numComps, boolean isPremultiplied, short[] c, short[] t, short[] a) Fills the channel definitions into the arrays based on the number of components and isPremultiplied.
short[]	getAssociation() Returns the association which associates a color channel to a color component in the color space of the image.
short[]	getChannel() Returns the defined channels.
IIOMetadataNode	getNativeNode() Creates an IIOMetadataNode from this channel definition box.
short[]	getTypes() Returns the channel types.
protected void	parse(byte[] data) Parse the channel definitions from the content data array.

Methods inherited from class com.sun.media.imageioimpl.plugins.jpeg2000.Box

copyInt, createBox, getAttribute, getBoxClass, getByteArrayElementValue, getByteElementValue, getContent, getExtraLength, getIntArrayElementValue, getIntElementValue, getLength, getName, getNativeNodeForSimpleBox, getShortElementValue, getStringElementValue, getType, getTypeByName, getTypeInt, getTypeString, parseByteArray, parseIntArray, read, setContent, setDefaultAttributes, setExtraLength, setLength, write

Methods inherited from class java.lang.Object

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

Field Detail

num

private short num

The cached data elements.

channels

private short[] channels

types

private short[] types

associations

private short[] associations

Constructor Detail

ChannelDefinitionBox

public ChannelDefinitionBox(ColorModel colorModel)

Constructs a ChannelDefinitionBox based on the provided ColorModel.

ChannelDefinitionBox

public ChannelDefinitionBox(byte[] data)

Constructs a ChannelDefinitionBox based on the provided content in byte array.

ChannelDefinitionBox

public ChannelDefinitionBox(short[] channel,
                            short[] types,
                            short[] associations)

Constructs a ChannelDefinitionBox based on the provided channel definitions.

ChannelDefinitionBox

public ChannelDefinitionBox(Node node)
                     throws IIOInvalidTreeException

Constructs a ChannelDefinitionBox based on the provided org.w3c.dom.Node.

Throws:

IIOInvalidTreeException

Method Detail

computeLength

private static int computeLength(ColorModel colorModel)

Computes the length of this box from the provided ColorModel.

fillBasedOnBands

public static void fillBasedOnBands(int numComps,
                                    boolean isPremultiplied,
                                    short[] c,
                                    short[] t,
                                    short[] a)

Fills the channel definitions into the arrays based on the number of components and isPremultiplied.

parse

protected void parse(byte[] data)

Parse the channel definitions from the content data array.

Overrides:

parse in class Box

getChannel

public short[] getChannel()

Returns the defined channels.

getTypes

public short[] getTypes()

Returns the channel types.

getAssociation

public short[] getAssociation()

Returns the association which associates a color channel to a color component in the color space of the image.

getNativeNode

public IIOMetadataNode getNativeNode()

Creates an IIOMetadataNode from this channel definition box. The format of this node is defined in the XML dtd and xsd for the JP2 image file.

Overrides:

getNativeNode in class Box

compose

protected void compose()

Description copied from class: Box

Composes the content byte array from the data elements.

Overrides:

compose in class Box