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.tiff.photometricinterpreters;
018
019import java.io.IOException;
020
021import org.apache.commons.imaging.ImageReadException;
022import org.apache.commons.imaging.common.ImageBuilder;
023
024public class PhotometricInterpreterBiLevel extends PhotometricInterpreter {
025    private final boolean invert;
026
027    // private final int bitsPerPixel;
028
029    public PhotometricInterpreterBiLevel(final int samplesPerPixel,
030            final int[] bitsPerSample, final int predictor, final int width,
031            final int height, final boolean invert) {
032        super(samplesPerPixel, bitsPerSample, predictor, width, height);
033
034        this.invert = invert;
035        // this.bitsPerPixel = fBitsPerPixel;
036    }
037
038    @Override
039    public void interpretPixel(final ImageBuilder imageBuilder, final int[] samples, final int x,
040            final int y) throws ImageReadException, IOException {
041        int sample = samples[0];
042
043        if (invert) {
044            sample = 255 - sample;
045        }
046
047        final int red = sample;
048        final int green = sample;
049        final int blue = sample;
050
051        final int alpha = 0xff;
052        final int rgb = (alpha << 24) | (red << 16) | (green << 8) | (blue << 0);
053
054        imageBuilder.setRGB(x, y, rgb);
055    }
056}