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

java.lang.Object
  edu.harvard.hul.ois.jhove.module.jpeg2000.ContCodestream

public class ContCodestream
extends java.lang.Object

Encapsulation of a JPEG 2000 codestream. This is based on the information in Appendix A of ISO/IEC 15444-1:2000(E). That standard "does not include a definition of compliance or conformance."

Author:

Gary McGath

Constructor Summary

ContCodestream(Jpeg2000Module module, java.io.DataInputStream dstream, long length)
Constructor.

Method Summary

protected Tile	getCurTile() Gets the value of curTile.
protected Tile	getTile(int idx) Gets the tile whose index is idx.
java.util.List<Tile>	getTiles() Returns the list of tiles.
protected boolean	isPPMSeen() Returns the value of the ppmSeen flag, signifying that a PPM marker segment has been encountered.
boolean	readCodestream(Codestream cs, RepInfo info) Reading a codestream generates various bits of information about the image.
protected void	setCurTile(Tile tile) Sets the value of curTile.
protected void	setPPMSeen(boolean b) Sets the value of the ppmSeen flag, signifying that a PPM marker segment has been encountered.
protected void	setTileLeft(long tileLeft) Set the number of bytes remaining in the current tile.

Methods inherited from class java.lang.Object

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

Constructor Detail

ContCodestream

public ContCodestream(Jpeg2000Module module,
                      java.io.DataInputStream dstream,
                      long length)

Constructor.

Parameters:

length - Length of the codestream, exclusive of the box header. If the codestream box has a length field of 0, pass 0 for this parameter.

Method Detail

readCodestream

public boolean readCodestream(Codestream cs,
                              RepInfo info)
                       throws java.io.IOException

Reading a codestream generates various bits of information about the image. These are made available after reading through accessor functions.

Parameters:

cs - The image which this codestream defines. Must have a non-null codestream field.

info - The RepInfo object which accumulates information about the document. Used for reporting errors.

Returns:

True if no fatal errors detected, false if error prevents safe continuation

Throws:

java.io.IOException

getTiles

public java.util.List<Tile> getTiles()

Returns the list of tiles. The elements are Tile objects.

setTileLeft

protected void setTileLeft(long tileLeft)

Set the number of bytes remaining in the current tile. For use by MarkerSegment subclasses.

getTile

protected Tile getTile(int idx)

Gets the tile whose index is idx.

setCurTile

protected void setCurTile(Tile tile)

Sets the value of curTile.

setPPMSeen

protected void setPPMSeen(boolean b)

Sets the value of the ppmSeen flag, signifying that a PPM marker segment has been encountered.

getCurTile

protected Tile getCurTile()

Gets the value of curTile. May be null.

isPPMSeen

protected boolean isPPMSeen()

Returns the value of the ppmSeen flag, signifying that a PPM marker segment has been encountered.