/*
* $RCSfile: MlibMinFilterRIF.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:56:00 $
* $State: Exp $
*/
package com.lightcrafts.media.jai.mlib;
import java.awt.RenderingHints;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.ParameterBlock;
import java.awt.image.renderable.RenderedImageFactory;
import com.lightcrafts.mediax.jai.BorderExtender;
import com.lightcrafts.mediax.jai.ImageLayout;
import com.lightcrafts.mediax.jai.operator.MinFilterDescriptor;
import com.lightcrafts.mediax.jai.operator.MinFilterShape;
import com.lightcrafts.media.jai.opimage.RIFUtil;
/**
* Creates a MlibMinFilterOpImage subclass for the given input
* mask type
* @see MlibMinFilterOpImage
*/
public class MlibMinFilterRIF implements RenderedImageFactory {
/** Constructor. */
public MlibMinFilterRIF() {}
/**
* Create a new instance of MlibMinFilterOpImage in the rendered layer.
* This method satisfies the implementation of RIF.
*
* @param paramBlock The source image and the convolution kernel.
*/
public RenderedImage create(ParameterBlock paramBlock,
RenderingHints renderHints) {
// Get ImageLayout from renderHints if any.
ImageLayout layout = RIFUtil.getImageLayoutHint(renderHints);
if (!MediaLibAccessor.isMediaLibCompatible(paramBlock, layout) ||
!MediaLibAccessor.hasSameNumBands(paramBlock, layout)) {
return null;
}
// Get BorderExtender from renderHints if any.
BorderExtender extender = RIFUtil.getBorderExtenderHint(renderHints);
MinFilterShape maskType =
(MinFilterShape)paramBlock.getObjectParameter(0);
int maskSize = paramBlock.getIntParameter(1);
RenderedImage ri = paramBlock.getRenderedSource(0);
if(maskType.equals(MinFilterDescriptor.MIN_MASK_SQUARE) &&
(maskSize==3 || maskSize==5 || maskSize == 7) &&
ri.getSampleModel().getNumBands() == 1){
return new MlibMinFilterOpImage(ri,
extender,
renderHints,
layout,
maskType,
maskSize);
}else{
return null;
}
}
}