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.jpeg.segments; 018 019import static org.apache.commons.imaging.common.BinaryFunctions.startsWith; 020 021import java.io.ByteArrayInputStream; 022import java.io.IOException; 023import java.io.InputStream; 024import java.nio.charset.StandardCharsets; 025 026/** 027 * http://www.aiim.org/documents/standards/PDF-Ref/References/Adobe/5116.DCT_Filter.pdf 028 */ 029public class App14Segment extends AppnSegment { 030 private static final byte[] ADOBE_PREFIX; 031 public static final int ADOBE_COLOR_TRANSFORM_UNKNOWN = 0; 032 public static final int ADOBE_COLOR_TRANSFORM_YCbCr = 1; 033 public static final int ADOBE_COLOR_TRANSFORM_YCCK = 2; 034 035 static { 036 ADOBE_PREFIX = "Adobe".getBytes(StandardCharsets.US_ASCII); 037 } 038 039 public App14Segment(final int marker, final byte[] segmentData) throws IOException { 040 this(marker, segmentData.length, new ByteArrayInputStream(segmentData)); 041 } 042 043 public App14Segment(final int marker, final int markerLength, final InputStream is) throws IOException { 044 super(marker, markerLength, is); 045 } 046 047 public boolean isAdobeJpegSegment() { 048 return startsWith(getSegmentData(), ADOBE_PREFIX); 049 } 050 051 public int getAdobeColorTransform() { 052 return 0xff & getSegmentData(11); 053 } 054}