/*
* $RCSfile: MlibTransposeRIF.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.DataBuffer;
import java.awt.image.MultiPixelPackedSampleModel;
import java.awt.image.RenderedImage;
import java.awt.image.SampleModel;
import java.awt.image.renderable.ParameterBlock;
import java.awt.image.renderable.RenderedImageFactory;
import com.lightcrafts.mediax.jai.EnumeratedParameter;
import com.lightcrafts.mediax.jai.ImageLayout;
import com.lightcrafts.media.jai.opimage.RIFUtil;
/**
* A <code>RIF</code> supporting the "Transpose" operation in the
* rendered image mode using MediaLib.
*
* @see com.lightcrafts.mediax.jai.operator.TransposeDescriptor
* @see MlibTransposeOpImage
*
* @since EA3
*/
public class MlibTransposeRIF implements RenderedImageFactory {
/** Constructor. */
public MlibTransposeRIF() {}
/**
* Creates a new instance of <code>MlibTransposeOpImage</code> in
* the rendered image mode.
*
* @param args The source image and the transpose type.
* @param hints May contain rendering hints and destination image layout.
*/
public RenderedImage create(ParameterBlock args,
RenderingHints hints) {
/* Get ImageLayout and TileCache from RenderingHints. */
ImageLayout layout = RIFUtil.getImageLayoutHint(hints);
if (!MediaLibAccessor.isMediaLibCompatible(args, layout) ||
!MediaLibAccessor.hasSameNumBands(args, layout)) {
return null;
}
RenderedImage source = args.getRenderedSource(0);
SampleModel sm = source.getSampleModel();
boolean isBilevel = (sm instanceof MultiPixelPackedSampleModel) &&
(sm.getSampleSize(0) == 1) &&
(sm.getDataType() == DataBuffer.TYPE_BYTE ||
sm.getDataType() == DataBuffer.TYPE_USHORT ||
sm.getDataType() == DataBuffer.TYPE_INT);
if (isBilevel) {
// Let Java code handle it, reformatting is slower
return null;
}
EnumeratedParameter transposeType =
(EnumeratedParameter)args.getObjectParameter(0);
return new MlibTransposeOpImage(args.getRenderedSource(0),
hints, layout,
transposeType.getValue());
}
}