/*
* $RCSfile: MlibLookupRIF.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:55:58 $
* $State: Exp $
*/
package com.lightcrafts.media.jai.mlib;
import java.awt.RenderingHints;
import java.awt.image.DataBuffer;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.ParameterBlock;
import java.awt.image.renderable.RenderedImageFactory;
import com.lightcrafts.mediax.jai.ImageLayout;
import com.lightcrafts.mediax.jai.LookupTableJAI;
import com.lightcrafts.media.jai.opimage.RIFUtil;
/**
* A <code>RIF</code> supporting the "Lookup" operation in the
* rendered image mode using MediaLib.
*
* @see com.lightcrafts.mediax.jai.operator.LookupDescriptor
* @see MlibLookupOpImage
*
*/
public class MlibLookupRIF implements RenderedImageFactory {
/** Constructor. */
public MlibLookupRIF() {}
/**
* Creates a new instance of <code>MlibLookupOpImage</code> in
* the rendered image mode.
*
* @param args The source image and lookup table.
* @param hints May contain rendering hints and destination image layout.
*/
public RenderedImage create(ParameterBlock args,
RenderingHints hints) {
/* Get ImageLayout and TileCache from RenderingHints. */
ImageLayout layout = RIFUtil.getImageLayoutHint(hints);
if (!MediaLibAccessor.isMediaLibCompatible(args)) {
return null;
}
/* The table should be less than or equal to 4 bands. */
LookupTableJAI table = (LookupTableJAI)args.getObjectParameter(0);
if (table.getNumBands() > 4 ||
table.getDataType() == DataBuffer.TYPE_USHORT) {
return null;
}
return new MlibLookupOpImage(args.getRenderedSource(0),
hints, layout,
table);
}
}