/* Convert an ImageToken to a JAIImageToken.
@Copyright (c) 2003-2006 The Regents of the University of California.
All rights reserved.
Permission is hereby granted, without written agreement and without
license or royalty fees, to use, copy, modify, and distribute this
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copies of this software.
IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
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PT_COPYRIGHT_VERSION 2
COPYRIGHTENDKEY
*/
package ptolemy.actor.lib.jai;
import java.awt.Image;
import java.awt.image.renderable.ParameterBlock;
import javax.media.jai.JAI;
import javax.media.jai.RenderedOp;
import ptolemy.actor.lib.Transformer;
import ptolemy.data.ImageToken;
import ptolemy.data.type.BaseType;
import ptolemy.kernel.CompositeEntity;
import ptolemy.kernel.util.IllegalActionException;
import ptolemy.kernel.util.NameDuplicationException;
//////////////////////////////////////////////////////////////////////////
//// ImageToJAI
/**
This actor takes any ImageToken and converts it into a JAIImageToken.
This is useful if you have an ImageToken and want to use some of the
actors in the JAI library.
@author James Yeh
@version $Id: ImageToJAI.java,v 1.18 2006/08/21 23:11:37 cxh Exp $
@since Ptolemy II 4.0
@Pt.ProposedRating Red (cxh)
@Pt.AcceptedRating Red (cxh)
*/
public class ImageToJAI extends Transformer {
/** Construct an actor with the given container and name.
* @param container The container.
* @param name The name of this actor.
* @exception IllegalActionException If the actor cannot be contained
* by the proposed container.
* @exception NameDuplicationException If the container already has an
* actor with this name.
*/
public ImageToJAI(CompositeEntity container, String name)
throws IllegalActionException, NameDuplicationException {
super(container, name);
input.setTypeEquals(BaseType.OBJECT);
output.setTypeEquals(BaseType.OBJECT);
}
/** Fire this actor.
* Output the image encapsulated into a JAIImageToken.
* @exception IllegalActionException If a contained method throws it,
* or if a token is received that contains a null image.
*/
public void fire() throws IllegalActionException {
super.fire();
ParameterBlock parameters = new ParameterBlock();
ImageToken imageToken = (ImageToken) input.get(0);
Image awtImage = imageToken.asAWTImage();
parameters.add(awtImage);
RenderedOp jaiImage = JAI.create("awtImage", parameters);
output.send(0, new JAIImageToken(jaiImage));
}
}