content: /*
   * Copyright 2002-2015 Drew Noakes
   *
   *    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;
  
  import static com.drew.metadata.exif.makernotes.OlympusFocusInfoMakernoteDirectory.*;
  
  /**
   * Provides human-readable String representations of tag values stored in a {@link OlympusFocusInfoMakernoteDirectory}.
   * <p>
   * Some Description functions converted from Exiftool version 10.10 created by Phil Harvey
   * https://www.sno.phy.queensu.ca/~phil/exiftool/
   * lib\Image\ExifTool\Olympus.pm
   *
   * @author Kevin Mott https://github.com/kwhopper
   * @author Drew Noakes https://drewnoakes.com
   */
  @SuppressWarnings("WeakerAccess")
  public class OlympusFocusInfoMakernoteDescriptor extends TagDescriptor<OlympusFocusInfoMakernoteDirectory>
  {
      public OlympusFocusInfoMakernoteDescriptor(@NotNull OlympusFocusInfoMakernoteDirectory directory)
      {
          super(directory);
      }
  
      @Override
      @Nullable
      public String getDescription(int tagType)
      {
          switch (tagType) {
              case TagFocusInfoVersion:
                  return getFocusInfoVersionDescription();
              case TagAutoFocus:
                  return getAutoFocusDescription();
              case TagFocusDistance:
                  return getFocusDistanceDescription();
              case TagAfPoint:
                  return getAfPointDescription();
              case TagExternalFlash:
                  return getExternalFlashDescription();
              case TagExternalFlashBounce:
                  return getExternalFlashBounceDescription();
              case TagExternalFlashZoom:
                  return getExternalFlashZoomDescription();
              case TagManualFlash:
                  return getManualFlashDescription();
              case TagMacroLed:
                  return getMacroLedDescription();
              case TagSensorTemperature:
                  return getSensorTemperatureDescription();
              case TagImageStabilization:
                  return getImageStabilizationDescription();
              default:
                  return super.getDescription(tagType);
          }
      }
  
      @Nullable
      public String getFocusInfoVersionDescription()
      {
          return getVersionBytesDescription(TagFocusInfoVersion, 4);
      }
  
      @Nullable
      public String getAutoFocusDescription()
      {
          return getIndexedDescription(TagAutoFocus,
              "Off", "On");
      }
  
      @Nullable
      public String getFocusDistanceDescription()
      {
          Rational value = _directory.getRational(TagFocusDistance);
          if (value == null)
              return "inf";
          if (value.getNumerator() == 0xFFFFFFFFL || value.getNumerator() == 0x00000000L)
              return "inf";
  
          return value.getNumerator() / 1000.0 + " m";
      }
  
      @Nullable
      public String getAfPointDescription()
      {
          Integer value = _directory.getInteger(TagAfPoint);
          if (value == null)
              return null;
  
          return value.toString();
      }
  
      @Nullable
      public String getExternalFlashDescription()
      {
          int[] values = _directory.getIntArray(TagExternalFlash);
          if (values == null || values.length < 2)
              return null;
  
          String join = String.format("%d %d", (short)values[0], (short)values[1]);
  
          if(join.equals("0 0"))
              return "Off";
          else if(join.equals("1 0"))
              return "On";
          else
              return "Unknown (" + join + ")";
      }
  
      @Nullable
      public String getExternalFlashBounceDescription()
      {
          return getIndexedDescription(TagExternalFlashBounce,
                  "Bounce or Off", "Direct");
      }
  
      @Nullable
      public String getExternalFlashZoomDescription()
      {
          int[] values = _directory.getIntArray(TagExternalFlashZoom);
          if (values == null)
          {
              // check if it's only one value long also
              Integer value = _directory.getInteger(TagExternalFlashZoom);
              if(value == null)
                  return null;
  
              values = new int[1];
              values[0] = value;
          }
  
          if (values.length == 0)
              return null;
  
          String join = String.format("%d", (short)values[0]);
          if(values.length > 1)
              join += " " + String.format("%d", (short)values[1]);
  
          if(join.equals("0"))
              return "Off";
          else if(join.equals("1"))
              return "On";
          else if(join.equals("0 0"))
              return "Off";
          else if(join.equals("1 0"))
              return "On";
          else
              return "Unknown (" + join + ")";
  
      }
  
      @Nullable
      public String getManualFlashDescription()
      {
          int[] values = _directory.getIntArray(TagManualFlash);
          if (values == null)
              return null;
  
          if ((short)values[0] == 0)
              return "Off";
  
          if ((short)values[1] == 1)
              return "Full";
          return "On (1/" + (short)values[1] + " strength)";
      }
  
      @Nullable
      public String getMacroLedDescription()
      {
          return getIndexedDescription(TagMacroLed,
                  "Off", "On");
      }
  
      /// <remarks>
      /// <para>TODO: Complete when Camera Model is available.</para>
      /// <para>There are differences in how to interpret this tag that can only be reconciled by knowing the model.</para>
      /// </remarks>
      @Nullable
      public String getSensorTemperatureDescription()
      {
          return _directory.getString(TagSensorTemperature);
      }
  
      @Nullable
      public String getImageStabilizationDescription()
      {
          byte[] values = _directory.getByteArray(TagImageStabilization);
          if (values == null)
              return null;
  
          if((values[0] | values[1] | values[2] | values[3]) == 0x0)
              return "Off";
          return "On, " + ((values[43] & 1) > 0 ? "Mode 1" : "Mode 2");
      }
  }
  