/*
* $RCSfile: MlibTranslateRIF.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:56:08 $
* $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.Interpolation;
import com.lightcrafts.mediax.jai.InterpolationNearest;
import com.lightcrafts.mediax.jai.InterpolationBilinear;
import com.lightcrafts.mediax.jai.InterpolationBicubic;
import com.lightcrafts.mediax.jai.InterpolationBicubic2;
import com.lightcrafts.mediax.jai.InterpolationTable;
import com.lightcrafts.media.jai.opimage.RIFUtil;
import com.lightcrafts.media.jai.opimage.TranslateIntOpImage;
/**
* A <code>RIF</code> supporting the "Translate" operation in the
* rendered image mode using MediaLib.
*
* @see com.lightcrafts.mediax.jai.operator.TranslateDescriptor
* @see MlibScaleOpImage
*/
public class MlibTranslateRIF implements RenderedImageFactory {
private static final float TOLERANCE = 0.01F;
/** Constructor. */
public MlibTranslateRIF() {}
/**
* Creates a new instance of <code>MlibAffineOpImage</code> in
* the rendered image mode.
*
* @param args The source image, the <code>AffineTransform</code>,
* and the <code>Interpolation</code>.
* @param hints May contain rendering hints and destination image layout.
*/
public RenderedImage create(ParameterBlock args,
RenderingHints hints) {
RenderedImage source = args.getRenderedSource(0);
float xTrans = args.getFloatParameter(0);
float yTrans = args.getFloatParameter(1);
Interpolation interp = (Interpolation) args.getObjectParameter(2);
/* Get ImageLayout and TileCache from RenderingHints. */
ImageLayout layout = RIFUtil.getImageLayoutHint(hints);
if ((Math.abs(xTrans - (int)xTrans) < TOLERANCE) &&
(Math.abs(yTrans - (int)yTrans) < TOLERANCE) &&
layout == null) { // TranslateIntOpImage can't deal with ImageLayout hint
return new TranslateIntOpImage(source,
hints,
(int)xTrans,
(int)yTrans);
} else {
if (!MediaLibAccessor.isMediaLibCompatible(args, layout) ||
!MediaLibAccessor.hasSameNumBands(args, layout) ||
// Medialib cannot deal with source image having tiles with any
// dimension greater than or equal to 32768
source.getTileWidth() >= 32768 ||
source.getTileHeight() >= 32768) {
return null;
}
/* Get BorderExtender from hints if any. */
BorderExtender extender = RIFUtil.getBorderExtenderHint(hints);
/*
* Call the Scale operation, since it encapsulates Translate
* and is better optimized than Affine.
*/
float xScale = 1.0F;
float yScale = 1.0F;
if (interp instanceof InterpolationNearest) {
return new MlibScaleNearestOpImage(source, extender,
hints, layout,
xScale, yScale,
xTrans, yTrans,
interp);
} else if (interp instanceof InterpolationBilinear) {
return new MlibScaleBilinearOpImage(source,
extender, hints, layout,
xScale, yScale,
xTrans, yTrans,
interp);
} else if (interp instanceof InterpolationBicubic ||
interp instanceof InterpolationBicubic2) {
return new MlibScaleBicubicOpImage(source,
extender, hints, layout,
xScale, yScale,
xTrans, yTrans,
interp);
} else if (interp instanceof InterpolationTable) {
return new MlibScaleTableOpImage(source,
extender, hints, layout,
xScale, yScale,
xTrans, yTrans,
interp);
} else {
return null;
}
}
}
}