com.sun.javafx.iio.common

Class RoughScaler

java.lang.Object

com.sun.javafx.iio.common.RoughScaler

All Implemented Interfaces:

PushbroomScaler

public class RoughScaler
extends java.lang.Object
implements PushbroomScaler

Field Summary

Fields

Modifier and Type	Field and Description
protected int[]	colPositions
protected java.nio.ByteBuffer	destBuf
protected int	destHeight
protected int	destLine
protected int	destWidth
protected int	nextSourceLine
protected int	numBands
protected double	scaleY
protected int	sourceLine

Constructor Summary

Constructors

Constructor and Description
RoughScaler(int sourceWidth, int sourceHeight, int numBands, int destWidth, int destHeight) Instantiates a new RoughScaler object.

Method Summary

Modifier and Type	Method and Description
java.nio.ByteBuffer	getDestination() Retrieves the destination buffer.
boolean	putSourceScanline(byte[] scanline, int off) Push one scanline of source pixels into the scaling engine.

Methods inherited from class java.lang.Object

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

Field Detail

numBands

protected int numBands

destWidth

protected int destWidth

destHeight

protected int destHeight

scaleY

protected double scaleY

destBuf

protected java.nio.ByteBuffer destBuf

colPositions

protected int[] colPositions

sourceLine

protected int sourceLine

nextSourceLine

protected int nextSourceLine

destLine

protected int destLine

Constructor Detail

RoughScaler

public RoughScaler(int sourceWidth,
                   int sourceHeight,
                   int numBands,
                   int destWidth,
                   int destHeight)

Instantiates a new RoughScaler object.

Parameters:

sourceWidth - The source image width

sourceHeight - The source image height

numBands - The number of components per pixel in the images

destWidth - The destination image width

destHeight - The destination image height

Throws:

java.lang.IllegalArgumentException - if any of the parameters is non-positive.

Method Detail

getDestination

public java.nio.ByteBuffer getDestination()

Retrieves the destination buffer.

Specified by:

getDestination in interface PushbroomScaler

Returns:

The destination buffer.

putSourceScanline

public boolean putSourceScanline(byte[] scanline,
                                 int off)

Push one scanline of source pixels into the scaling engine. A nearest neighbor interpolation algorithm is used.

Specified by:

putSourceScanline in interface PushbroomScaler

Parameters:

scanline - One scanline of source data.

off - The offset into the buffer.

Returns:

Whether the destination image is complete.

Throws:

java.lang.IllegalArgumentException - if off < 0.