1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.imaging.formats.tiff.photometricinterpreters;
18
19 import java.io.IOException;
20 import java.util.Objects;
21
22 import org.apache.commons.imaging.ImagingException;
23 import org.apache.commons.imaging.common.ImageBuilder;
24
25 /**
26 * Interpreter for photometric information in TIFF images. The photometric interpretation tag is a requirement for valid TIFF images, and defines the color
27 * space of the image data.
28 *
29 * @see <a href= "https://www.awaresystems.be/imaging/tiff/tifftags/photometricinterpretation.html"> Baseline TIFF Tag PhotometricInterpretation</a>
30 */
31 public abstract class PhotometricInterpreter {
32
33 protected final int samplesPerPixel;
34 private final int[] bitsPerSample;
35 protected final int predictor;
36 protected final int width;
37 protected final int height;
38
39 public PhotometricInterpreter(final int samplesPerPixel, final int[] bitsPerSample, final int predictor, final int width, final int height) {
40 this.samplesPerPixel = samplesPerPixel;
41 this.bitsPerSample = Objects.requireNonNull(bitsPerSample, "bitsPerSample");
42 this.predictor = predictor;
43 this.width = width;
44 this.height = height;
45 }
46
47 protected int getBitsPerSample(final int offset) {
48 return bitsPerSample[offset];
49 }
50
51 public abstract void interpretPixel(ImageBuilder imageBuilder, int[] samples, int x, int y) throws ImagingException, IOException;
52 }