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