/*
* $RCSfile: MlibDilate3SquareOpImage.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.2 $
* $Date: 2005/12/09 00:20:28 $
* $State: Exp $
*/
package com.lightcrafts.media.jai.mlib;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.image.DataBuffer;
import java.awt.image.Raster;
import java.awt.image.RenderedImage;
import java.awt.image.WritableRaster;
import com.lightcrafts.mediax.jai.AreaOpImage;
import com.lightcrafts.mediax.jai.BorderExtender;
import com.lightcrafts.mediax.jai.ImageLayout;
import com.lightcrafts.mediax.jai.JAI;
import com.lightcrafts.mediax.jai.KernelJAI;
import java.util.Map;
import com.sun.medialib.mlib.*;
// import com.lightcrafts.media.jai.test.OpImageTester;
/**
* An OpImage class to perform dilation on a source image
* for the specific case when the kernel is a 3x3 square shape -
* with all 1s for binary and 0s for gray image and
* the key position in the middle,
* using mediaLib, of course :-).
*
* @see com.lightcrafts.mediax.jai.operator.DilateDescriptor
* @see KernelJAI
*/
final class MlibDilate3SquareOpImage extends AreaOpImage {
// Since medialib expects single banded data with IndexColorModel, we
// should not expand the indexed data
private static Map configHelper(Map configuration) {
Map config;
if (configuration == null) {
config = new RenderingHints(JAI.KEY_REPLACE_INDEX_COLOR_MODEL,
Boolean.FALSE);
} else {
config = configuration;
// If the user has specified a hint for this, then we don't
// want to change it, so change only if this hint is not
// already specified
if (!(config.containsKey(JAI.KEY_REPLACE_INDEX_COLOR_MODEL))) {
RenderingHints hints = (RenderingHints)configuration;
config = (RenderingHints)hints.clone();
config.put(JAI.KEY_REPLACE_INDEX_COLOR_MODEL, Boolean.FALSE);
}
}
return config;
}
/**
* Creates a MlibDilate3SquareOpImage given the image source
* The image dimensions are
* derived from the source image. The tile grid layout,
* SampleModel, and ColorModel may optionally be specified by an
* ImageLayout object.
*
* @param source a RenderedImage.
* @param extender a BorderExtender, or null.
* or null. If null, a default cache will be used.
* @param layout an ImageLayout optionally containing the tile grid layout,
* SampleModel, and ColorModel, or null.
*/
public MlibDilate3SquareOpImage(RenderedImage source,
BorderExtender extender,
Map config,
ImageLayout layout
) {
super(source,
layout,
configHelper(config),
true,
extender,
1, //kernel.getLeftPadding(),
1, //kernel.getRightPadding(),
1, //kernel.getTopPadding(),
1 //kernel.getBottomPadding()
);
}
/**
* Performs dilation on a specified rectangle. The sources are
* cobbled.
*
* @param sources an array of source Rasters, guaranteed to provide all
* necessary source data for computing the output.
* @param dest a WritableRaster tile containing the area to be computed.
* @param destRect the rectangle within dest to be processed.
*/
protected void computeRect(Raster[] sources,
WritableRaster dest,
Rectangle destRect) {
Raster source = sources[0];
Rectangle srcRect = mapDestRect(destRect, 0);
int formatTag = MediaLibAccessor.findCompatibleTag(sources,dest);
MediaLibAccessor srcAccessor =
new MediaLibAccessor(source,srcRect,formatTag,true);
MediaLibAccessor dstAccessor =
new MediaLibAccessor(dest,destRect,formatTag,true);
int numBands = getSampleModel().getNumBands();
mediaLibImage[] srcML = srcAccessor.getMediaLibImages();
mediaLibImage[] dstML = dstAccessor.getMediaLibImages();
for (int i = 0; i < dstML.length; i++) {
switch (dstAccessor.getDataType()) {
case DataBuffer.TYPE_BYTE:
case DataBuffer.TYPE_USHORT:
case DataBuffer.TYPE_SHORT:
case DataBuffer.TYPE_INT:
Image.Dilate8(dstML[i], srcML[i]);
break;
case DataBuffer.TYPE_FLOAT:
case DataBuffer.TYPE_DOUBLE:
Image.Dilate8_Fp(dstML[i], srcML[i]);
break;
default:
String className = this.getClass().getName();
throw new RuntimeException(JaiI18N.getString("Generic2"));
}
}
if (dstAccessor.isDataCopy()) {
dstAccessor.copyDataToRaster();
}
}
// public static OpImage createTestImage(OpImageTester oit) {
// float data[] = {0.05f,0.10f,0.05f,
// 0.10f,0.40f,0.10f,
// 0.05f,0.10f,0.05f};
// KernelJAI kJAI = new KernelJAI(3,3,1,1,data);
// return new MlibDilate3SquareOpImage(oit.getSource(), null, null,
// new ImageLayout(oit.getSource()));
// }
// public static void main (String args[]) {
// String classname = "com.lightcrafts.media.jai.mlib.MlibDilate3SquareOpImage";
// OpImageTester.performDiagnostics(classname,args);
// }
}