/*
* $RCSfile: ConvolveRIF.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:56:20 $
* $State: Exp $
*/
package com.lightcrafts.media.jai.opimage;
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.BorderExtender;
import com.lightcrafts.mediax.jai.ImageLayout;
import com.lightcrafts.mediax.jai.KernelJAI;
/**
* @see ConvolveOpImage
*/
public class ConvolveRIF implements RenderedImageFactory {
/** Constructor. */
public ConvolveRIF() {}
/**
* Create a new instance of ConvolveOpImage 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);
// Get BorderExtender from renderHints if any.
BorderExtender extender = RIFUtil.getBorderExtenderHint(renderHints);
KernelJAI unRotatedKernel =
(KernelJAI)paramBlock.getObjectParameter(0);
KernelJAI kJAI = unRotatedKernel.getRotatedKernel();
int dataType =
paramBlock.getRenderedSource(0).getSampleModel().getDataType();
boolean dataTypeOk = (dataType == DataBuffer.TYPE_BYTE ||
dataType == DataBuffer.TYPE_SHORT ||
dataType == DataBuffer.TYPE_INT);
if (kJAI.getWidth() == 3 && kJAI.getHeight() == 3 &&
kJAI.getXOrigin() == 1 && kJAI.getYOrigin() == 1 &&
dataTypeOk) {
return new Convolve3x3OpImage(paramBlock.getRenderedSource(0),
extender,
renderHints,
layout,
kJAI);
} else if (kJAI.isSeparable()) {
return new SeparableConvolveOpImage(paramBlock.getRenderedSource(0),
extender,
renderHints,
layout,
kJAI);
} else {
return new ConvolveOpImage(paramBlock.getRenderedSource(0),
extender,
renderHints,
layout,
kJAI);
}
}
}