edu.harvard.hul.ois.jhove.module.jpeg2000

Class CrossRefBox

java.lang.Object

edu.harvard.hul.ois.jhove.module.jpeg2000.BoxHolder

edu.harvard.hul.ois.jhove.module.jpeg2000.JP2Box

edu.harvard.hul.ois.jhove.module.jpeg2000.CrossRefBox

All Implemented Interfaces:

Iterator<Object>

public class CrossRefBox
extends JP2Box

Cross Reference Box (JPX). A Cross Reference Box may be found in a Codestream Header, Compositing Layer Header, or Association box. When it is encountered, the box to which it refers should be substituted for the Cross Reference Box. Interesting features of the box are that it isn't all in one place, but is scattered through multiple locations by a fragment list, and it doesn't follow standard superbox rules. See ISO/IEC FCD15444-2: 2000, L.9.7

Author:

Gary McGath

Field Summary

Fields inherited from class edu.harvard.hul.ois.jhove.module.jpeg2000.JP2Box

_bytesRead, associations, DESCRIPTION_NAME, startBytesRead

Fields inherited from class edu.harvard.hul.ois.jhove.module.jpeg2000.BoxHolder

_boxHeader, _dstrm, _module, _parentBox, _raf, _repInfo, bytesLeft, filePos, hasBoxes

Constructor Summary

Constructors

Constructor and Description
CrossRefBox(RandomAccessFile raf, BoxHolder parent) Constructor with superbox.

Method Summary

Modifier and Type	Method and Description
DataInputStream	getCrossRefStream() Returns a DataInputStream based on a FragmentInputStream so that the fragments can be read as a single entity.
protected String	getSelfPropName() Returns the name of the Box.
boolean	readBox() Reads the box, putting appropriate information in the RepInfo object.

Methods inherited from class edu.harvard.hul.ois.jhove.module.jpeg2000.JP2Box

addAssociation, boxMaker, emptyBox, finalizeBytesRead, getBytesRead, getLength, getSelfPropDesc, init, initBytesRead, makeAssocProperty, selfDescProperty, setBoxHeader, setDataInputStream, setModule, setRandomAccessFile, setRepInfo, skipBox, wrongBoxContext, wrongBoxSize

Methods inherited from class edu.harvard.hul.ois.jhove.module.jpeg2000.BoxHolder

getFilePos, hasNext, next, remove, superboxOverrun, superboxUnderrun

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

CrossRefBox

public CrossRefBox(RandomAccessFile raf,
                   BoxHolder parent)

Constructor with superbox.

Parameters:

parent - parent superbox of this box or TopLevelBoxHolder

Method Detail

readBox

public boolean readBox()
                throws IOException

Reads the box, putting appropriate information in the RepInfo object. setModule, setBoxHeader, setRepInfo and setDataInputStream must be called before readBox is called. readBox must completely consume the box, so that the next byte to be read by the DataInputStream is the FF byte of the next Box.

Specified by:

readBox in class JP2Box

Throws:

IOException

getCrossRefStream

public DataInputStream getCrossRefStream()

Returns a DataInputStream based on a FragmentInputStream so that the fragments can be read as a single entity.

getSelfPropName

protected String getSelfPropName()

Returns the name of the Box.

Overrides:

getSelfPropName in class JP2Box