ptolemy.actor.lib.jmf
Class JMFImageToken

java.lang.Object
  ptolemy.data.Token
      ptolemy.data.ImageToken
          ptolemy.actor.lib.jmf.JMFImageToken

All Implemented Interfaces:

java.io.Serializable

public class JMFImageToken
extends ImageToken

A token that contains a javax.media.Buffer. This token is used when dealing with images in the Java Media Framework (JMF) library. Because it extends ImageToken, it can be used with the standard image processing tools by simply casting it, and calling asAWTImage().

Since:

Ptolemy II 3.0

Version:

$Id: JMFImageToken.java 57040 2010-01-27 20:52:32Z cxh $

Author:

James Yeh

See Also:

Serialized Form

Accepted Rating:

Red (cxh)

Proposed Rating:

Red (cxh)

Field Summary

private java.awt.Image	_awtImage
private static javax.media.util.BufferToImage	_bufferToImage
private javax.media.Buffer	_value
private javax.media.format.VideoFormat	_videoFormat

Fields inherited from class ptolemy.data.Token

NIL

Constructor Summary

JMFImageToken(javax.media.Buffer value)
Construct a token with a specified Buffer.

Method Summary

java.awt.Image	asAWTImage() Convert a javax.media.Buffer to a java.awt.Image and return it.
Type	getType() Return the type of this token.
javax.media.Buffer	getValue() Return the value of this token.
java.lang.String	toString() Return a description of the token.

Methods inherited from class ptolemy.data.Token

add, addReverse, divide, divideReverse, isCloseTo, isCloseTo, isEqualTo, isNil, modulo, moduloReverse, multiply, multiplyReverse, notSupportedConversionMessage, notSupportedIncomparableConversionMessage, notSupportedIncomparableMessage, notSupportedMessage, notSupportedNullNilStringMessage, one, pow, subtract, subtractReverse, zero, zeroReturnType

Methods inherited from class java.lang.Object

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

Field Detail

_value

private javax.media.Buffer _value

_bufferToImage

private static javax.media.util.BufferToImage _bufferToImage

_videoFormat

private javax.media.format.VideoFormat _videoFormat

_awtImage

private java.awt.Image _awtImage

Constructor Detail

JMFImageToken

public JMFImageToken(javax.media.Buffer value)

Construct a token with a specified Buffer.

Parameters:

value - The buffer.

Method Detail

asAWTImage

public java.awt.Image asAWTImage()

Convert a javax.media.Buffer to a java.awt.Image and return it. A new javax.media.util.BufferToImage is created when the video format of the Buffer changes.

Specified by:

asAWTImage in class ImageToken

Returns:

The image.

getType

public Type getType()

Return the type of this token.

Overrides:

getType in class Token

Returns:

BaseType.OBJECT

getValue

public javax.media.Buffer getValue()

Return the value of this token.

Returns:

The value of this token.

toString

public java.lang.String toString()

Return a description of the token. If possible, derived classes should override this method and return the value of this token as a string that can be parsed by the expression language to recover a token with the same value. Unfortunately, in this base class, we can only return the a partial description of the token.

Overrides:

toString in class Token

Returns:

A string representation of a record that partially describes the token.