    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}