ucar.jpeg.icc.tags

Class ICCTag

java.lang.Object

ucar.jpeg.icc.tags.ICCTag

Direct Known Subclasses:

ICCCurveType, ICCCurveTypeReverse, ICCTextDescriptionType, ICCTextType, ICCXYZType

public abstract class ICCTag
extends Object

An ICC profile contains a 128-byte header followed by a variable number of tags contained in a tag table. Each tag is a structured block of ints. The tags share a common format on disk starting with a signature, an offset to the tag data, and a length of the tag data. The tag data itself is found at the given offset in the file and consists of a tag type int, followed by a reserved int, followed by a data block, the structure of which is unique to the tag type.

This class is the abstract super class of all tags. It models that part of the structure which is common among tags of all types.

It also contains the definitions of the various tag types.

Version:

1.0

Author:

Bruce A. Kern

See Also:

jj2000.j2k.icc.tags.ICCTagTable

Field Summary

Fields

Modifier and Type	Field and Description
int	count size of the tag data in the array
byte[]	data Tag data
int	offset offset to tag data in the array
int	signature Tag id
int	type Tag type

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ICCTag(int signature, byte[] data, int offset, int count) Ued by subclass initialization to store the state common to all tags

Method Summary

Methods

Modifier and Type	Method and Description
static ICCTag	createInstance(int signature, byte[] data, int offset, int count) Factory method for creating a tag of a specific type.
static String	signatureString(int signature) Create a string representation of the signature
String	toString()
static String	typeString(int type) Create a string representation of the tag type

Methods inherited from class java.lang.Object

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

Field Detail

signature

public final int signature

Tag id

type

public final int type

Tag type

data

public final byte[] data

Tag data

offset

public final int offset

offset to tag data in the array

count

public final int count

size of the tag data in the array

Constructor Detail

ICCTag

protected ICCTag(int signature,
      byte[] data,
      int offset,
      int count)

Ued by subclass initialization to store the state common to all tags

Parameters:

signature - tag being created

data - byte array containg embedded tag data

offset - to tag data in the array

count - size of tag data in bytes

Method Detail

typeString

public static String typeString(int type)

Create a string representation of the tag type

Parameters:

type - input

Returns:

String representation of the type

signatureString

public static String signatureString(int signature)

Create a string representation of the signature

Parameters:

signature - input

Returns:

String representation of the signature

createInstance

public static ICCTag createInstance(int signature,
                    byte[] data,
                    int offset,
                    int count)

Factory method for creating a tag of a specific type.

Parameters:

signature - tag to create

data - byte array containg embedded tag data

offset - to tag data in the array

count - size of tag data in bytes

Returns:

specified ICCTag

toString

public String toString()

Overrides:

toString in class Object