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.OlympusRawInfoMakernoteDirectory.*;
  
  /**
   * Provides human-readable String representations of tag values stored in a {@link OlympusRawInfoMakernoteDirectory}.
   * <p>
   * Some Description functions converted from Exiftool version 10.33 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 OlympusRawInfoMakernoteDescriptor extends TagDescriptor<OlympusRawInfoMakernoteDirectory>
  {
      public OlympusRawInfoMakernoteDescriptor(@NotNull OlympusRawInfoMakernoteDirectory directory)
      {
          super(directory);
      }
  
      @Override
      @Nullable
      public String getDescription(int tagType)
      {
          switch (tagType) {
              case TagRawInfoVersion:
                  return getVersionBytesDescription(TagRawInfoVersion, 4);
              case TagColorMatrix2:
                  return getColorMatrix2Description();
              case TagYCbCrCoefficients:
                  return getYCbCrCoefficientsDescription();
              case TagLightSource:
                  return getOlympusLightSourceDescription();
              default:
                  return super.getDescription(tagType);
          }
      }
  
      @Nullable
      public String getColorMatrix2Description()
      {
          int[] values = _directory.getIntArray(TagColorMatrix2);
          if (values == null)
              return null;
  
          StringBuilder sb = new StringBuilder();
          for (int i = 0; i < values.length; i++) {
              sb.append((short)values[i]);
              if (i < values.length - 1)
                  sb.append(" ");
          }
          return sb.length() == 0 ? null : sb.toString();
      }
  
      @Nullable
      public String getYCbCrCoefficientsDescription()
      {
          int[] values = _directory.getIntArray(TagYCbCrCoefficients);
          if (values == null)
              return null;
  
          Rational[] ret = new Rational[values.length / 2];
          for(int i = 0; i < values.length / 2; i++)
          {
              ret[i] = new Rational((short)values[2*i], (short)values[2*i + 1]);
          }
  
          StringBuilder sb = new StringBuilder();
          for (int i = 0; i < ret.length; i++) {
              sb.append(ret[i].doubleValue());
              if (i < ret.length - 1)
                  sb.append(" ");
          }
          return sb.length() == 0 ? null : sb.toString();
      }
      
      @Nullable
      public String getOlympusLightSourceDescription()
      {
          Integer value = _directory.getInteger(TagLightSource);
          if (value == null)
              return null;
  
          switch (value.shortValue())
          {
              case 0:
                  return "Unknown";
              case 16:
                  return "Shade";
              case 17:
                  return "Cloudy";
              case 18:
                  return "Fine Weather";
              case 20:
                  return "Tungsten (Incandescent)";
              case 22:
                  return "Evening Sunlight";
              case 33:
                  return "Daylight Fluorescent";
              case 34:
                  return "Day White Fluorescent";
              case 35:
                  return "Cool White Fluorescent";
              case 36:
                  return "White Fluorescent";
              case 256:
                  return "One Touch White Balance";
              case 512:
                  return "Custom 1-4";
              default:
                  return "Unknown (" + value + ")";
          }
      }
  }
  