/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.commons.imaging.formats.jpeg.segments;
  
  import static org.apache.commons.imaging.common.BinaryFunctions.startsWith;
  
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.nio.charset.StandardCharsets;
  
  /**
   * [BROKEN URL] http://www.aiim.org/documents/standards/PDF-Ref/References/Adobe/5116.DCT_Filter.pdf
   */
  public class App14Segment extends AppnSegment {
      private static final byte[] ADOBE_PREFIX;
      public static final int ADOBE_COLOR_TRANSFORM_UNKNOWN = 0;
      public static final int ADOBE_COLOR_TRANSFORM_YCbCr = 1;
      public static final int ADOBE_COLOR_TRANSFORM_YCCK = 2;
  
      static {
          ADOBE_PREFIX = "Adobe".getBytes(StandardCharsets.US_ASCII);
      }
  
      public App14Segment(final int marker, final byte[] segmentData) throws IOException {
          this(marker, segmentData.length, new ByteArrayInputStream(segmentData));
      }
  
      public App14Segment(final int marker, final int markerLength, final InputStream is) throws IOException {
          super(marker, markerLength, is);
      }
  
      public int getAdobeColorTransform() {
          return 0xff & getSegmentData(11);
      }
  
      public boolean isAdobeJpegSegment() {
          return startsWith(getSegmentData(), ADOBE_PREFIX);
      }
  }