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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 */

package org.cresques.filter.bands;

import java.awt.Image;

import java.awt.image.BufferedImage;

import org.cresques.io.data.RasterBuf;

import org.cresques.io.datastruct.Palette;

import org.cresques.util.Utilities;

/**

 * Filtro de paleta a aplicar sobre una imagen con tipo de dato image. Para cada elemento

 * del RasterBuf se realiza la conversi?n de dato a trav?s de la clase palette que se pasa

 * como par?metro al filtro en la inicializaci?n.

 * 

 * @author Nacho Brodin (brodin_ign@gva.es)

 *

 */

public class PaletteImageFilter extends PaletteFilter {

        /**

         * Constructor

         *

         */

        public PaletteImageFilter(){

                super();

        }

        public void pre(){

                this.image = (Image) params.get("raster");

                height = image.getHeight(null);

        width = image.getWidth(null);

                super.pre();

        }

        public void process(int col, int line) {

                int px = ((BufferedImage) image).getRGB(col, line);

                int alpha = px & 0xff000000;

                px = (px & 0x00ff0000) >> 16;

                if(interpolate)

                        px = palette.getInterpolateRGB2(px);

                else

                        px = palette.getRGB(px);

                px = (alpha & (px & 0xff000000)) | (px & 0x00ffffff);

                ((BufferedImage) image).setRGB(col, line, px);

        }

         /* (non-Javadoc)

     * @see org.cresques.io.raster.IRasterFilter#processSuperSampling(int, int)

     */

        public void processSuperSampling(int col, int line) {

                int px = ((BufferedImage) image).getRGB(col, line);

                int alpha = px & 0xff000000;

                px = (px & 0x00ff0000) >> 16;

                if(interpolate)

                        px = palette.getInterpolateRGB2(px);

                else

                        px = palette.getRGB(px);

                px = (alpha & (px & 0xff000000)) | (px & 0x00ffffff);

        for(int j = col; j < image.getWidth(null) && j < (col + stepX[contX + 1]); j++)

                        for(int i = line; i < image.getHeight(null) && i < (line + stepY[contY + 1]); i++){

                                px = (alpha & (px & 0xff000000)) | (px & 0x00ffffff);

                                ((BufferedImage) image).setRGB(j, i, px);                        

                        }

        }

        public void processLine(int y) {

                // TODO Auto-generated method stub

        }

        public int getInRasterDataType() {

                return RasterBuf.TYPE_IMAGE;

        }

        public int getOutRasterDataType() {

                return RasterBuf.TYPE_IMAGE;

        }

        public Object getResult(String name) {

                if (name.equals("raster")) {

            return (Object) this.image;

        } else {

            return null;

        }

        }

}