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; 023 024/** 025 * Interpreter for photometric information in TIFF images. The photometric 026 * interpretation tag is a requirement for valid TIFF images, and defines the 027 * color space of the image data. 028 * 029 * @see <a href= 030 * "https://www.awaresystems.be/imaging/tiff/tifftags/photometricinterpretation.html"> 031 * Baseline TIFF Tag PhotometricInterpretation </a> 032 */ 033public abstract class PhotometricInterpreter { 034 protected final int samplesPerPixel; 035 private final int[] bitsPerSample; 036 protected final int predictor; 037 protected final int width; 038 protected final int height; 039 040 public PhotometricInterpreter(final int samplesPerPixel, final int[] bitsPerSample, 041 final int predictor, final int width, final int height) { 042 this.samplesPerPixel = samplesPerPixel; 043 this.bitsPerSample = bitsPerSample; 044 this.predictor = predictor; 045 this.width = width; 046 this.height = height; 047 } 048 049 public abstract void interpretPixel(ImageBuilder imageBuilder, 050 int[] samples, int x, int y) throws ImageReadException, IOException; 051 052 protected int getBitsPerSample(final int offset) { 053 return bitsPerSample[offset]; 054 } 055}