001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.imaging.formats.psd.dataparsers;
018
019import java.util.Arrays;
020
021import org.apache.commons.imaging.formats.psd.PsdImageContents;
022
023public class DataParserIndexed extends AbstractDataParser {
024    private final int[] colorTable;
025
026    public DataParserIndexed(final byte[] colorModeData) {
027        colorTable = new int[256];
028        Arrays.setAll(colorTable, i -> {
029            final int red = 0xff & colorModeData[0 * 256 + i];
030            final int green = 0xff & colorModeData[1 * 256 + i];
031            final int blue = 0xff & colorModeData[2 * 256 + i];
032            final int alpha = 0xff;
033
034            // return RGB
035            return (0xff & alpha) << 24 | (0xff & red) << 16 | (0xff & green) << 8 | (0xff & blue) << 0;
036        });
037    }
038
039    @Override
040    public int getBasicChannelsCount() {
041        return 1;
042    }
043
044    @Override
045    protected int getRgb(final int[][][] data, final int x, final int y, final PsdImageContents imageContents) {
046        final int sample = 0xff & data[0][y][x];
047        return colorTable[sample];
048    }
049
050}