content: /*
   * Copyright 2002-2019 Drew Noakes and contributors
   *
   *    Licensed 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
   *
   *        https://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.
   *
   * More information about this project is available at:
   *
   *    https://drewnoakes.com/code/exif/
   *    https://github.com/drewnoakes/metadata-extractor
   */
  package com.drew.metadata.jfxx;
  
  import com.drew.lang.annotations.NotNull;
  import com.drew.lang.annotations.Nullable;
  import com.drew.metadata.TagDescriptor;
  
  import static com.drew.metadata.jfxx.JfxxDirectory.*;
  
  /**
   * Provides human-readable string versions of the tags stored in a JfxxDirectory.
   *
   * <ul>
   *   <li>https://en.wikipedia.org/wiki/JPEG_File_Interchange_Format</li>
   *   <li>https://www.w3.org/Graphics/JPEG/jfif3.pdf</li>
   * </ul>
   *
   * @author Drew Noakes
   */
  @SuppressWarnings("WeakerAccess")
  public class JfxxDescriptor extends TagDescriptor<JfxxDirectory>
  {
      public JfxxDescriptor(@NotNull JfxxDirectory directory)
      {
          super(directory);
      }
  
      @Override
      @Nullable
      public String getDescription(int tagType)
      {
          switch (tagType) {
              case TAG_EXTENSION_CODE:
                  return getExtensionCodeDescription();
              default:
                  return super.getDescription(tagType);
          }
      }
  
      @Nullable
      public String getExtensionCodeDescription()
      {
          Integer value = _directory.getInteger(TAG_EXTENSION_CODE);
          if (value==null)
              return null;
          switch (value) {
              case 0x10: return "Thumbnail coded using JPEG";
              case 0x11: return "Thumbnail stored using 1 byte/pixel";
              case 0x13: return "Thumbnail stored using 3 bytes/pixel";
              default: return "Unknown extension code " + value;
          }
      }
  }
  