org.apache.pdfbox.pdmodel.graphics.xobject

Class PDPixelMap

java.lang.Object

org.apache.pdfbox.pdmodel.graphics.xobject.PDXObject

org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectImage

org.apache.pdfbox.pdmodel.graphics.xobject.PDPixelMap

All Implemented Interfaces:

COSObjectable

public class PDPixelMap
extends PDXObjectImage

This class contains a PixelMap Image.

Version:

$Revision: 1.10 $

Author:

Ben Litchfield, mathiak

Field Summary

Fields inherited from class org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectImage

SUB_TYPE

Constructor Summary

Constructors

Constructor and Description
PDPixelMap(PDStream pdStream) Standard constructor.

Method Summary

Methods

Modifier and Type	Method and Description
COSDictionary	getDecodeParams() DecodeParms is an optional parameter for filters.
int	getPredictor() A code that selects the predictor algorithm.
BufferedImage	getRGBImage() Returns a BufferedImage of the COSStream set in the constructor or null if the COSStream could not be encoded.
void	write2OutputStream(OutputStream out) Writes the image as .png.

Methods inherited from class org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectImage

getBitsPerComponent, getColorSpace, getDecode, getHeight, getImageMask, getMask, getSMaskImage, getSuffix, getWidth, setBitsPerComponent, setColorSpace, setGraphicsState, setHeight, setWidth, write2file, write2file

Methods inherited from class org.apache.pdfbox.pdmodel.graphics.xobject.PDXObject

createXObject, getCOSObject, getCOSStream, getMetadata, getPDStream, setMetadata

Methods inherited from class java.lang.Object

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

Constructor Detail

PDPixelMap

public PDPixelMap(PDStream pdStream)

Standard constructor. Basically does nothing.

Parameters:

pdStream - The stream that holds the pixel map.

Method Detail

getRGBImage

public BufferedImage getRGBImage()
                          throws IOException

Returns a BufferedImage of the COSStream set in the constructor or null if the COSStream could not be encoded.

Specified by:

getRGBImage in class PDXObjectImage

Returns:

This PDF object as an AWT image.

Throws:

IOException - If there is an error creating the image.

write2OutputStream

public void write2OutputStream(OutputStream out)
                        throws IOException

Writes the image as .png. Writes the Image to out.

Specified by:

write2OutputStream in class PDXObjectImage

Parameters:

out - the OutputStream that the Image is written to.

Throws:

IOException - when somethings wrong with out

getDecodeParams

public COSDictionary getDecodeParams()

DecodeParms is an optional parameter for filters. It is provided if any of the filters has nondefault parameters. If there is only one filter it is a dictionary, if there are multiple filters it is an array with an entry for each filter. An array entry can hold a null value if only the default values are used or a dictionary with parameters.

Returns:

The decoding parameters.

getPredictor

public int getPredictor()

A code that selects the predictor algorithm.

• 1 No prediction (the default value)
• 2 TIFF Predictor 2
• 10 PNG prediction (on encoding, PNG None on all rows)
• 11 PNG prediction (on encoding, PNG Sub on all rows)
• 12 PNG prediction (on encoding, PNG Up on all rows)
• 13 PNG prediction (on encoding, PNG Average on all rows)
• 14 PNG prediction (on encoding, PNG Path on all rows)
• 15 PNG prediction (on encoding, PNG optimum)

Default value: 1.

Returns:

predictor algorithm code