001/*******************************************************************************
002 * This software is provided as a supplement to the authors' textbooks on digital
003 * image processing published by Springer-Verlag in various languages and editions.
004 * Permission to use and distribute this software is granted under the BSD 2-Clause
005 * "Simplified" License (see http://opensource.org/licenses/BSD-2-Clause).
006 * Copyright (c) 2006-2023 Wilhelm Burger, Mark J. Burge. All rights reserved.
007 * Visit https://imagingbook.com for additional details.
008 ******************************************************************************/
009package imagingbook.common.image.access;
010
011import ij.process.ImageProcessor;
012import ij.process.ShortProcessor;
013import imagingbook.common.image.OutOfBoundsStrategy;
014import imagingbook.common.image.interpolation.InterpolationMethod;
015
016/**
017 * Image accessor for scalar images with 16-bit (short) values.
018 */
019public class ShortAccessor extends ScalarAccessor {
020        private final short[] pixels;
021
022        /**
023         * Constructor. See also the factory method
024         * {@link ScalarAccessor#create(ImageProcessor, OutOfBoundsStrategy, InterpolationMethod)}.
025         *
026         * @param ip an instance of {@link ShortProcessor}
027         * @param obs the out-of-bounds strategy to be used (use {@code null} for default settings)
028         * @param ipm the interpolation method to be used (use {@code null} for default settings)
029         */
030        public ShortAccessor(ShortProcessor ip, OutOfBoundsStrategy obs, InterpolationMethod ipm) {
031                super(ip, obs, ipm);
032                this.pixels = (short[]) this.ip.getPixels();
033        }
034        
035        public static ShortAccessor create(ShortProcessor ip, OutOfBoundsStrategy obs, InterpolationMethod ipm) {
036                return new ShortAccessor(ip, obs, ipm);
037        }
038
039        @Override
040        public float getVal(int u, int v) {
041                int i = indexer.getIndex(u, v);
042                if (i < 0)
043                        return this.defaultValue;
044                else
045                        return (0xFFFF & pixels[i]);
046        }
047
048        @Override
049        public void setVal(int u, int v, float val) {
050                int vali = Math.round(val);
051                if (vali < 0)
052                        vali = 0;
053                if (vali > 65535)
054                        vali = 65535;
055                if (u >= 0 && u < width && v >= 0 && v < height) {
056                        pixels[width * v + u] = (short) (0xFFFF & vali);
057                }
058        }
059}