Predictor (Lobo Evolution 5.0 API)

java.lang.Object

org.loboevolution.pdfview.decode.Predictor

Direct Known Subclasses:: PNGPredictor, TIFFPredictor

public abstract class Predictor extends Object

The abstract superclass of various predictor objects that undo well-known prediction algorithms.

Field Summary

Fields

Modifier and Type

Field

Description

static final int

PNG

Constant PNG=1

static final int

TIFF

well known algorithms
Constructor Summary

Constructors

Modifier

Constructor

Description

protected

Predictor(int algorithm)

Create an instance of a predictor.
Method Summary

Modifier and Type

Method

Description

static Predictor

getPredictor(PDFObject params)

Get an instance of a predictor

abstract ByteBuffer

unpredict(ByteBuffer imageData)

Actually perform this algorithm on decoded image data.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- TIFF
  
  public static final int TIFF
  
  well known algorithms
  See Also:
  
  Constant Field Values
- PNG
  
  public static final int PNG
  
  Constant PNG=1
  See Also:
  
  Constant Field Values
Constructor Details
- Predictor
  
  protected Predictor(int algorithm)
  
  Create an instance of a predictor. Use getPredictor() instead of this.
  
  Parameters:
  
  algorithm - a Integer object.
Method Details
- getPredictor
  
  public static Predictor getPredictor(PDFObject params) throws IOException
  
  Get an instance of a predictor
  
  Parameters:
  
  params - the filter parameters
  
  Returns:
  
  a Predictor object.
  
  Throws:
  
  IOException - if any.
- unpredict
  
  public abstract ByteBuffer unpredict(ByteBuffer imageData) throws IOException
  
  Actually perform this algorithm on decoded image data. Subclasses must implement this method
  
  Parameters:
  
  imageData - a ByteBuffer object.
  
  Returns:
  
  a ByteBuffer object.
  
  Throws:
  
  IOException - if any.