org.apache.pdfbox.pdmodel.graphics.predictor
Class None

java.lang.Object
  org.apache.pdfbox.pdmodel.graphics.predictor.PredictorAlgorithm
      org.apache.pdfbox.pdmodel.graphics.predictor.None

public class None
extends PredictorAlgorithm

The none algorithm. None(i,j) = Raw(i,j) Raw(i,j) = None(i,j)

Version:

$Revision: 1.3 $

Author:

xylifyx@yahoo.co.uk

Constructor Summary

None()

Method Summary

void	decode(byte[] src, byte[] dest) decode a byte array full of image data using the filter that this object implements.
void	decodeLine(byte[] src, byte[] dest, int srcDy, int srcOffset, int destDy, int destOffset) decode line of pixel data in src from src_offset and width*bpp bytes forward, put the decoded bytes into dest.
void	encode(byte[] src, byte[] dest) encode a byte array full of image data using the filter that this object implements.
void	encodeLine(byte[] src, byte[] dest, int srcDy, int srcOffset, int destDy, int destOffset) encode line of pixel data in src from srcOffset and width*bpp bytes forward, put the decoded bytes into dest.

Methods inherited from class org.apache.pdfbox.pdmodel.graphics.predictor.PredictorAlgorithm

aboveLeftPixel, abovePixel, checkBufsiz, getBpp, getFilter, getHeight, getWidth, leftPixel, main, setBpp, setHeight, setWidth

Methods inherited from class java.lang.Object

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

Constructor Detail

None

public None()

Method Detail

encode

public void encode(byte[] src,
                   byte[] dest)

encode a byte array full of image data using the filter that this object implements.

Overrides:

encode in class PredictorAlgorithm

Parameters:

src - buffer

dest - buffer

decode

public void decode(byte[] src,
                   byte[] dest)

decode a byte array full of image data using the filter that this object implements.

Overrides:

decode in class PredictorAlgorithm

Parameters:

src - buffer

dest - buffer

encodeLine

public void encodeLine(byte[] src,
                       byte[] dest,
                       int srcDy,
                       int srcOffset,
                       int destDy,
                       int destOffset)

encode line of pixel data in src from srcOffset and width*bpp bytes forward, put the decoded bytes into dest.

Specified by:

encodeLine in class PredictorAlgorithm

Parameters:

src - raw image data

dest - encoded data

srcDy - byte offset between lines

srcOffset - beginning of line data

destDy - byte offset between lines

destOffset - beginning of line data

decodeLine

public void decodeLine(byte[] src,
                       byte[] dest,
                       int srcDy,
                       int srcOffset,
                       int destDy,
                       int destOffset)

decode line of pixel data in src from src_offset and width*bpp bytes forward, put the decoded bytes into dest.

Specified by:

decodeLine in class PredictorAlgorithm

Parameters:

src - encoded image data

dest - raw data

srcDy - byte offset between lines

srcOffset - beginning of line data

destDy - byte offset between lines

destOffset - beginning of line data