    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}