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.exif.makernotes;
  
  import com.drew.lang.annotations.NotNull;
  import com.drew.lang.annotations.Nullable;
  import com.drew.metadata.TagDescriptor;
  
  import static com.drew.metadata.exif.makernotes.LeicaType5MakernoteDirectory.*;
  
  /**
   * Provides human-readable string representations of tag values stored in a {@link LeicaType5MakernoteDirectory}.
   * <p>
   * Tag reference from: https://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Panasonic.html
   *
   * @author Kevin Mott https://github.com/kwhopper
   * @author Drew Noakes https://drewnoakes.com
   */
  @SuppressWarnings("WeakerAccess")
  public class LeicaType5MakernoteDescriptor extends TagDescriptor<LeicaType5MakernoteDirectory>
  {
      public LeicaType5MakernoteDescriptor(@NotNull LeicaType5MakernoteDirectory directory)
      {
          super(directory);
      }
  
      @Override
      @Nullable
      public String getDescription(int tagType)
      {
          switch (tagType) {
              case TagExposureMode:
                  return getExposureModeDescription();
              default:
                  return super.getDescription(tagType);
          }
      }
  
      @Nullable
      public String getExposureModeDescription()
      {
          byte[] values = _directory.getByteArray(TagExposureMode);
          if (values == null || values.length < 4)
              return null;
  
          String join = String.format("%d %d %d %d", values[0], values[1], values[2], values[3]);
  
          if(join.equals("0 0 0 0"))
              return "Program AE";
          else if(join.equals("1 0 0 0"))
              return "Aperture-priority AE";
          else if(join.equals("1 1 0 0"))
              return "Aperture-priority AE (1)";
          else if(join.equals("2 0 0 0"))
              return "Shutter speed priority AE";  // guess
          else if(join.equals("3 0 0 0"))
              return "Manual";
          else
              return String.format("Unknown (%s)", join);
      }
  }
  