/*
* $RCSfile: UnsharpMaskRIF.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:56:46 $
* $State: Exp $
*/
package com.lightcrafts.media.jai.opimage;
import com.lightcrafts.media.jai.util.ImageUtil;
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 UnsharpMaskOpImage
*/
public class UnsharpMaskRIF implements RenderedImageFactory {
/** Constructor. */
public UnsharpMaskRIF() {}
/**
* Create a new instance of UnsharpMaskOpImage in the rendered layer.
* This method satisfies the implementation of RIF.
*
* @param paramBlock The source image, the unsharp mask kernel and
* the gain factor.
*/
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);
// map the input kernel + gain factor to an equivalent
// convolution kernel and then do a normal convolve.
KernelJAI unRotatedKernel =
ImageUtil.getUnsharpMaskEquivalentKernel(
(KernelJAI)paramBlock.getObjectParameter(0),
paramBlock.getFloatParameter(1));
KernelJAI kJAI = unRotatedKernel.getRotatedKernel();
RenderedImage source = paramBlock.getRenderedSource(0);
int dataType = source.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(source,
extender,
renderHints,
layout,
kJAI);
} else if (kJAI.isSeparable()) {
return new SeparableConvolveOpImage(source,
extender,
renderHints,
layout,
kJAI);
} else {
return new ConvolveOpImage(source,
extender,
renderHints,
layout,
kJAI);
}
}
}