OrderedDitherRIF.java

/* JAI-Ext - OpenSource Java Advanced Image Extensions Library
 *    http://www.geo-solutions.it/
 *    Copyright 2014 GeoSolutions


 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at

 * http://www.apache.org/licenses/LICENSE-2.0

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package it.geosolutions.jaiext.orderdither;

import it.geosolutions.jaiext.range.Range;

import java.awt.RenderingHints;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.ParameterBlock;
import java.awt.image.renderable.RenderedImageFactory;

import javax.media.jai.ColorCube;
import javax.media.jai.ImageLayout;
import javax.media.jai.KernelJAI;
import javax.media.jai.ROI;

import com.sun.media.jai.opimage.RIFUtil;

/**
 * {@link RenderedImageFactory} implementation generating a new {@link OrderedDitherOpImage} instance.
 * 
 * @author Nicola Lagomarsini GeoSolutions
 * 
 */
public class OrderedDitherRIF implements RenderedImageFactory {

    public RenderedImage create(ParameterBlock paramBlock, RenderingHints renderHints) {
        // Get ImageLayout from renderHints if any.
        ImageLayout layout = RIFUtil.getImageLayoutHint(renderHints);
        // Getting source
        RenderedImage source = paramBlock.getRenderedSource(0);
        // Getting the parameters
        ColorCube colorMap = (ColorCube) paramBlock.getObjectParameter(0);
        KernelJAI[] ditherMask = (KernelJAI[]) paramBlock.getObjectParameter(1);
        ROI roi = (ROI) paramBlock.getObjectParameter(2);
        Range nodata = (Range) paramBlock.getObjectParameter(3);
        double destNoData = paramBlock.getDoubleParameter(4);

        return new OrderedDitherOpImage(source, renderHints, layout, colorMap, ditherMask, roi,
                nodata, destNoData);
    }

}