/* * #%L * SCIFIO library for reading and converting scientific file formats. * %% * Copyright (C) 2011 - 2020 SCIFIO developers. * %% * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * #L% */ package io.scif.gui; import java.awt.image.ColorModel; import java.awt.image.DataBuffer; import java.awt.image.Raster; import java.awt.image.WritableRaster; import java.io.IOException; import org.scijava.util.Bytes; /** * ColorModel that handles 16 bits per channel lookup tables. */ public class Index16ColorModel extends ColorModel { // -- Fields -- /** Lookup tables. */ private short[] redShort, greenShort, blueShort, alphaShort; private final boolean littleEndian; // -- Constructors -- public Index16ColorModel(final int bits, final int size, final short[][] table, final boolean littleEndian) throws IOException { super(bits); this.littleEndian = littleEndian; if (table == null) throw new IOException("LUT cannot be null"); for (int i = 0; i < table.length; i++) { if (table[i].length < size) { throw new IOException("LUT " + i + " too small"); } } if (table.length > 0) redShort = table[0]; if (table.length > 1) greenShort = table[1]; if (table.length > 2) blueShort = table[2]; if (table.length > 3) alphaShort = table[3]; } // -- Index16ColorModel API methods -- /** Return the array of red color components. */ public short[] getReds() { return redShort; } /** Return the array of green color components. */ public short[] getGreens() { return greenShort; } /** Return the array of blue color components. */ public short[] getBlues() { return blueShort; } /** Return the array of alpha color components. */ public short[] getAlphas() { return alphaShort; } // -- ColorModel API methods -- @Override public synchronized Object getDataElements(final int rgb, final Object pixel) { final int red = (rgb >> 16) & 0xff; final int green = (rgb >> 8) & 0xff; final int blue = rgb & 0xff; // int alpha = (rgb >>> 24); final short[] p = pixel == null ? new short[3] : (short[]) pixel; p[0] = (short) red; p[1] = (short) green; p[2] = (short) blue; return p; } @Override public boolean isCompatibleRaster(final Raster raster) { return raster.getNumBands() == 1; } @Override public WritableRaster createCompatibleWritableRaster(final int w, final int h) { return Raster.createInterleavedRaster(DataBuffer.TYPE_USHORT, w, h, 1, null); } @Override public int getAlpha(final int pixel) { if (alphaShort != null) return alphaShort[pixel] & 0xffff; return 0xffff; } @Override public int getBlue(final int pixel) { if (blueShort == null) return 0; final int blue = blueShort[pixel] & 0xffff; return littleEndian ? Bytes.swap(blue) : blue; } @Override public int getGreen(final int pixel) { if (greenShort == null) return 0; final int green = greenShort[pixel] & 0xffff; return littleEndian ? Bytes.swap(green) : green; } @Override public int getRed(final int pixel) { if (redShort == null) return 0; final int red = redShort[pixel] & 0xffff; return littleEndian ? Bytes.swap(red) : red; } }