trex.Filter
Class TRexFilterRGB

java.lang.Object
  |
  +--java.awt.image.ImageFilter
        |
        +--java.awt.image.RGBImageFilter
              |
              +--trex.Filter.TRexFilterRGB

All Implemented Interfaces:

Cloneable, ImageConsumer

Direct Known Subclasses:

StegoAlgoLSB.LSBDecryptFilter, StegoAlgoLSB.LSBEncryptFilter

public abstract class TRexFilterRGB

extends RGBImageFilter

This is the base class for all encrypt and decrypt filters. Filters have to implement the filterRGB() function as defined in RGBImageFilter.

Version:

$Revision: 1.11 $

Author:

Bastian Friedrich <bastian@bastian-friedrich.de>

Field Summary

protected byte[]	data Data to hide as a byte array.
protected int	h Objective picture's size.
protected int	w Objective picture's size.

Fields inherited from class java.awt.image.RGBImageFilter

canFilterIndexColorModel, newmodel, origmodel

Fields inherited from class java.awt.image.ImageFilter

consumer

Fields inherited from interface java.awt.image.ImageConsumer

COMPLETESCANLINES, IMAGEABORTED, IMAGEERROR, RANDOMPIXELORDER, SINGLEFRAME, SINGLEFRAMEDONE, SINGLEPASS, STATICIMAGEDONE, TOPDOWNLEFTRIGHT

Constructor Summary

TRexFilterRGB()
Default constructor.

TRexFilterRGB(String data, int w, int h)
Creates a new filter.

Method Summary

String

getData() Return contained data as a String.

Methods inherited from class java.awt.image.RGBImageFilter

filterIndexColorModel, filterRGB, filterRGBPixels, setColorModel, setPixels, setPixels, substituteColorModel

Methods inherited from class java.awt.image.ImageFilter

clone, getFilterInstance, imageComplete, resendTopDownLeftRight, setDimensions, setHints, setProperties

Methods inherited from class java.lang.Object

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

Field Detail

data

protected byte[] data

Data to hide as a byte array. Is converted to a String by getData().

See Also:

getData()

w

protected int w

Objective picture's size. This is needed for calculating the pixel's absoulte position in the one-dimensional array.

h

protected int h

Objective picture's size. This is needed for calculating the pixel's absoulte position in the one-dimensional array.

Constructor Detail

TRexFilterRGB

public TRexFilterRGB()

Default constructor. Initializes data fields with null values. Should never be used.

TRexFilterRGB

public TRexFilterRGB(String data,
                     int w,
                     int h)

Creates a new filter.

Parameters:

data - Data to hide

w - Picture's width

h - Picture's height

Method Detail

getData

public String getData()
               throws DecryptImpossibleException

Return contained data as a String.

Returns:

Contained data.

DecryptImpossibleException