Package org.apache.pdfbox.jbig2.image

Class Scanline

java.lang.Object

org.apache.pdfbox.jbig2.image.Scanline

Direct Known Subclasses:

BitmapScanline, Scanline.ByteBGRScanline, Scanline.ByteBiLevelPackedScanline, Scanline.GenericRasterScanline, Scanline.IntegerSinglePixelPackedScanline

abstract class Scanline
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	Scanline.ByteBGRScanline	A Scanline for pixel interleaved byte data with three components.
protected static class	Scanline.ByteBiLevelPackedScanline	A Scanline for BiLevel input data (MultiPixelPackedSampleModel) to indexed output data (sun.awt.image.ByteInterleavedRaster).
protected static class	Scanline.GenericRasterScanline	A Scanline for packed integer pixels.
protected static class	Scanline.IntegerSinglePixelPackedScanline	A Scanline for packed integer pixels.
static interface	Scanline.ScanlineFilter

Field Summary

Fields

Modifier and Type	Field	Description
protected int	length
(package private) int	y

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Scanline(int width)

Method Summary

Modifier and Type	Method	Description
protected abstract void	accumulate(int weight, Scanline dst)
protected abstract void	clear()
protected abstract void	fetch(int x, int y)
protected abstract void	filter(int[] preShift, int[] postShift, Weighttab[] xweights, Scanline dst)
protected int	getWidth()
protected abstract void	shift(int[] finalshift)
protected abstract void	store(int x, int y)

Methods inherited from class java.lang.Object

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

Field Detail

y

int y

length

protected final int length

Constructor Detail

Scanline

protected Scanline(int width)

Method Detail

getWidth

protected final int getWidth()

clear

protected abstract void clear()

fetch

protected abstract void fetch(int x,
                              int y)

filter

protected abstract void filter(int[] preShift,
                               int[] postShift,
                               Weighttab[] xweights,
                               Scanline dst)

accumulate

protected abstract void accumulate(int weight,
                                   Scanline dst)

shift

protected abstract void shift(int[] finalshift)

store

protected abstract void store(int x,
                              int y)