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.Rational;
  import com.drew.lang.annotations.NotNull;
  import com.drew.lang.annotations.Nullable;
  import com.drew.metadata.TagDescriptor;
  
  /**
   * Provides human-readable string representations of tag values stored in a {@link AppleMakernoteDirectory}.
   * <p>
   * Using information from https://owl.phy.queensu.ca/~phil/exiftool/TagNames/Apple.html
   *
   * @author Drew Noakes https://drewnoakes.com
   */
  @SuppressWarnings("WeakerAccess")
  public class AppleMakernoteDescriptor extends TagDescriptor<AppleMakernoteDirectory>
  {
      public AppleMakernoteDescriptor(@NotNull AppleMakernoteDirectory directory)
      {
          super(directory);
      }
  
      @Override
      @Nullable
      public String getDescription(int tagType)
      {
          switch (tagType) {
              case AppleMakernoteDirectory.TAG_HDR_IMAGE_TYPE:
                  return getHdrImageTypeDescription();
              case AppleMakernoteDirectory.TAG_ACCELERATION_VECTOR:
                  return getAccelerationVectorDescription();
              default:
                  return super.getDescription(tagType);
          }
      }
  
      @Nullable
      public String getHdrImageTypeDescription()
      {
          return getIndexedDescription(AppleMakernoteDirectory.TAG_HDR_IMAGE_TYPE, 3, "HDR Image", "Original Image");
      }
  
      @Nullable
      public String getAccelerationVectorDescription()
      {
          Rational[] values = _directory.getRationalArray(AppleMakernoteDirectory.TAG_ACCELERATION_VECTOR);
          if (values == null || values.length != 3)
              return null;
          return String.format("%.2fg %s, ", values[0].getAbsolute().doubleValue(), values[0].isPositive() ? "left" : "right") +
                 String.format("%.2fg %s, ", values[1].getAbsolute().doubleValue(), values[1].isPositive() ? "down" : "up") +
                 String.format("%.2fg %s",   values[2].getAbsolute().doubleValue(), values[2].isPositive() ? "forward" : "backward");
      }
  }
  