com.sun.media.imageio.plugins.jpeg2000

Class J2KImageReadParam

java.lang.Object

javax.imageio.IIOParam

javax.imageio.ImageReadParam

com.sun.media.imageio.plugins.jpeg2000.J2KImageReadParam

Direct Known Subclasses:

J2KImageReadParamJava

public class J2KImageReadParam
extends ImageReadParam

A subclass of ImageReadParam for reading images in the JPEG 2000 format.

The decoding parameters for JPEG 2000 are listed below:

JPEG 2000 Plugin Decoding Parameters

Parameter Name	Description
decodingRate	Specifies the decoding rate in bits per pixel (bpp) where the number of pixels is related to the image's original size (Note: this parameter is not affected by resolution). The default is Double.MAX_VALUE. It means decoding with the encoding rate.
resolution	Specifies the resolution level wanted for the decoded image (0 means the lowest available resolution, the resolution level gives an image with the original dimension). If the given index is greater than the number of available resolution levels of the compressed image, the decoded image has the lowest available resolution (among all tile-components). This parameter affects only the inverse wavelet transform and not the number of bytes read by the codestream parser, which depends only on decodingRate. The default value, -1, means to use the resolution level at encoding.

Field Summary

Fields

Modifier and Type	Field and Description
private double	decodingRate Specifies the decoding rate in bits per pixel (bpp) where the number of pixels is related to the image's original size (Note: this number is not affected by resolution).
private int	resolution Specifies the resolution level wanted for the decoded image (0 means the lowest available resolution, the resolution level gives an image with the original dimension).

Fields inherited from class javax.imageio.ImageReadParam

canSetSourceRenderSize, destination, destinationBands, minProgressivePass, numProgressivePasses, sourceRenderSize

Fields inherited from class javax.imageio.IIOParam

controller, defaultController, destinationOffset, destinationType, sourceBands, sourceRegion, sourceXSubsampling, sourceYSubsampling, subsamplingXOffset, subsamplingYOffset

Constructor Summary

Constructors

Constructor and Description
J2KImageReadParam() Constructs a default instance of J2KImageReadParam.

Method Summary

Methods

Modifier and Type	Method and Description
double	getDecodingRate() Gets decodingRate.
int	getResolution() Gets resolution.
void	setDecodingRate(double rate) Sets decodingRate.
void	setResolution(int resolution) Sets resolution.

Methods inherited from class javax.imageio.ImageReadParam

canSetSourceRenderSize, getDestination, getDestinationBands, getSourceMaxProgressivePass, getSourceMinProgressivePass, getSourceNumProgressivePasses, getSourceRenderSize, setDestination, setDestinationBands, setDestinationType, setSourceProgressivePasses, setSourceRenderSize

Methods inherited from class javax.imageio.IIOParam

activateController, getController, getDefaultController, getDestinationOffset, getDestinationType, getSourceBands, getSourceRegion, getSourceXSubsampling, getSourceYSubsampling, getSubsamplingXOffset, getSubsamplingYOffset, hasController, setController, setDestinationOffset, setSourceBands, setSourceRegion, setSourceSubsampling

Methods inherited from class java.lang.Object

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

Field Detail

decodingRate

private double decodingRate

Specifies the decoding rate in bits per pixel (bpp) where the number of pixels is related to the image's original size (Note: this number is not affected by resolution).

resolution

private int resolution

Specifies the resolution level wanted for the decoded image (0 means the lowest available resolution, the resolution level gives an image with the original dimension). If the given index is greater than the number of available resolution levels of the compressed image, the decoded image has the lowest available resolution (among all tile-components). This parameter affects only the inverse wavelet transform but not the number of bytes read by the codestream parser, which depends only on decodingRate.

Constructor Detail

J2KImageReadParam

public J2KImageReadParam()

Constructs a default instance of J2KImageReadParam.

Method Detail

setDecodingRate

public void setDecodingRate(double rate)

Sets decodingRate.

Parameters:

rate - the decoding rate in bits per pixel.

See Also:

getDecodingRate()

getDecodingRate

public double getDecodingRate()

Gets decodingRate.

Returns:

the decoding rate in bits per pixel.

See Also:

setDecodingRate(double)

setResolution

public void setResolution(int resolution)

Sets resolution.

Parameters:

resolution - the resolution level with 0 being the lowest available.

See Also:

getResolution()

getResolution

public int getResolution()

Gets resolution.

Returns:

the resolution level with 0 being the lowest available.

See Also:

setResolution(int)