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org.modama.jaiutil.codecs.XDR
Class XDRCodec  

java.lang.Object
  ImageCodec
      org.modama.jaiutil.codecs.XDR.XDRCodec

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public final class XDRCodec

extends ImageCodec

A subclass of ImageCodec that handles the XDR Beamline Fileformat

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Constructor Summary

XDRCodec()           Constructs an instance of XDRCodec.

 

Method Summary
boolean	canEncodeImage(java.awt.image.RenderedImage im, ImageEncodeParam param)           Returns true if the image is encodable by this codec.
protected  ImageDecoder	createImageDecoder(java.io.InputStream src, ImageDecodeParam param)           Instantiates a XDRImageDecoder to read from the given InputStream.
protected  ImageEncoder	createImageEncoder(java.io.OutputStream dst, ImageEncodeParam param)           NOT IMPLEMENTED YET
java.lang.Class	getDecodeParamClass()           Returns Object.class since no DecodeParam object is required for decoding.
java.lang.Class	getEncodeParamClass()           Returns null since no encoder exists.
java.lang.String	getFormatName()           Returns the name of the format handled by this codec.
int	getNumHeaderBytes()           Returns the number of bytes from the beginning of the data required to recognize it as being in XDR format.
boolean	isFormatRecognized(byte[] header)           Returns true if the header bytes indicate XDR format.

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

XDRCodec

public XDRCodec()

Constructs an instance of XDRCodec.

Method Detail

getFormatName

public java.lang.String getFormatName()

Returns the name of the format handled by this codec.

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getEncodeParamClass

public java.lang.Class getEncodeParamClass()

Returns null since no encoder exists.

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getDecodeParamClass

public java.lang.Class getDecodeParamClass()

Returns Object.class since no DecodeParam object is required for decoding.

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canEncodeImage

public boolean canEncodeImage(java.awt.image.RenderedImage im,
                              ImageEncodeParam param)

Returns true if the image is encodable by this codec.

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createImageEncoder

protected ImageEncoder createImageEncoder(java.io.OutputStream dst,
                                          ImageEncodeParam param)

NOT IMPLEMENTED YET

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createImageDecoder

protected ImageDecoder createImageDecoder(java.io.InputStream src,
                                          ImageDecodeParam param)

Instantiates a XDRImageDecoder to read from the given InputStream.

By overriding this method, GQECodec is able to ensure that a ForwardSeekableStream is used to wrap the source InputStream instead of the a general (and more expensive) subclass of SeekableStream. Since the XDR decoder does not require the ability to seek backwards in its input, this allows for greater efficiency.

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getNumHeaderBytes

public int getNumHeaderBytes()

Returns the number of bytes from the beginning of the data required to recognize it as being in XDR format.

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isFormatRecognized

public boolean isFormatRecognized(byte[] header)

Returns true if the header bytes indicate XDR format.

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