Add GeoTIFF support

MetadataExtractor.sln.DotSettings

@@ -9,6 +9,7 @@
 	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=LV/@EntryIndexedValue">LV</s:String>
 	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=MM/@EntryIndexedValue">MM</s:String>
 	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=ND/@EntryIndexedValue">ND</s:String>
+	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=NW/@EntryIndexedValue">NW</s:String>
 	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=OS/@EntryIndexedValue">OS</s:String>
 	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=RG/@EntryIndexedValue">RG</s:String>
 	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=UI/@EntryIndexedValue">UI</s:String>
@@ -71,6 +72,7 @@
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Heif/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=HEVC/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=ICCP/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Ifds/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=IFD_0027s/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=ilist/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Illuminator/@EntryIndexedValue">True</s:Boolean>

MetadataExtractor/Directory.cs

@@ -152,6 +152,19 @@ public virtual void Set(int tagType, object value)
 
         #endregion
 
+        public void RemoveTag(int tagId)
+        {
+            if (_tagMap.Remove(tagId))
+            {
+                var index = _definedTagList.FindIndex(tag => tag.Type == tagId);
+
+                if (index != -1)
+                {
+                    _definedTagList.RemoveAt(index);
+                }
+            }
+        }
+
         /// <summary>Returns the name of a specified tag as a String.</summary>
         /// <param name="tagType">the tag type identifier</param>
         /// <returns>the tag's name as a String</returns>

MetadataExtractor/Formats/Exif/ExifDescriptorBase.cs

@@ -101,6 +101,8 @@ protected ExifDescriptorBase(T directory)
                 TagCompression                   => GetCompressionDescription(),
                 TagJpegProc                      => GetJpegProcDescription(),
                 TagLensSpecification             => GetLensSpecificationDescription(),
+                TagExtraSamples                  => GetExtraSamplesDescription(),
+                TagSampleFormat                  => GetSampleFormatDescription(),
                 _                                => base.GetDescription(tagType),
             };
 
@@ -954,5 +956,43 @@ internal static string GetWhiteBalanceDescription(int value)
                 _ => "Unknown (" + value + ")",
             };
         }
+
+        public string? GetExtraSamplesDescription()
+        {
+            return GetIndexedDescription(
+                TagExtraSamples,
+                "Unspecified",
+                "Associated alpha",
+                "Unassociated alpha");
+        }
+
+        public string? GetSampleFormatDescription()
+        {
+            var values = Directory.GetInt32Array(TagSampleFormat);
+
+            if (values is null)
+                return null;
+
+            var sb = new StringBuilder();
+
+            foreach (var value in values)
+            {
+                if (sb.Length != 0)
+                    sb.Append(", ");
+
+                sb.Append(value switch
+                {
+                    1 => "Unsigned",
+                    2 => "Signed",
+                    3 => "Float",
+                    4 => "Undefined",
+                    5 => "Complex int",
+                    6 => "Complex float",
+                    _ => $"Unknown ({value})"
+                });
+            }
+
+            return sb.ToString();
+        }
     }
 }

MetadataExtractor/Formats/Exif/ExifDirectoryBase.cs

@@ -155,6 +155,9 @@ public abstract class ExifDirectoryBase : Directory
         /// <remarks>Seems to be used exclusively by raw formats, referencing one or two IFDs.</remarks>
         public const int TagSubIfdOffset = 0x014a;
 
+        public const int TagExtraSamples = 0x0152;
+        public const int TagSampleFormat = 0x0153;
+
         public const int TagTransferRange = 0x0156;
 
         public const int TagJpegTables = 0x015B;
@@ -206,12 +209,22 @@ public abstract class ExifDirectoryBase : Directory
         /// <summary>The actual F-number(F-stop) of lens when the image was taken.</summary>
         public const int TagFNumber = 0x829D;
 
+        public const int TagPixelScale = 0x830E;
+
         public const int TagIptcNaa = 0x83BB;
 
+        public const int TagModelTiePoint = 0x8482;
+
         public const int TagPhotoshopSettings = 0x8649;
 
         public const int TagInterColorProfile = 0x8773;
 
+        public const int TagGeoTiffGeoKeys = 0x87af;
+
+        public const int TagGeoTiffGeoDoubleParams = 0x87b0;
+
+        public const int TagGeoTiffGeoAsciiParams = 0x87b1;
+
         /// <summary>Exposure program that the camera used when image was taken.</summary>
         /// <remarks>
         /// '1' means
@@ -697,6 +710,9 @@ public abstract class ExifDirectoryBase : Directory
         /// <summary>String.</summary>
         public const int TagLensSerialNumber = 0xA435;
 
+        public const int TagGdalMetadata = 0xA480;
+        public const int TagGdalNoData = 0xA481;
+
         /// <summary>Rational64u.</summary>
         public const int TagGamma = 0xA500;
 
@@ -758,6 +774,8 @@ protected static void AddExifTagNames(Dictionary<int, string> map)
             map[TagTileOffsets] = "Tile Offsets";
             map[TagTileByteCounts] = "Tile Byte Counts";
             map[TagSubIfdOffset] = "Sub IFD Pointer(s)";
+            map[TagExtraSamples] = "Extra Samples";
+            map[TagSampleFormat] = "Sample Format";
             map[TagTransferRange] = "Transfer Range";
             map[TagJpegTables] = "JPEG Tables";
             map[TagJpegProc] = "JPEG Proc";
@@ -785,7 +803,9 @@ protected static void AddExifTagNames(Dictionary<int, string> map)
             map[TagCopyright] = "Copyright";
             map[TagExposureTime] = "Exposure Time";
             map[TagFNumber] = "F-Number";
+            map[TagPixelScale] = "Pixel Scale";
             map[TagIptcNaa] = "IPTC/NAA";
+            map[TagModelTiePoint] = "Model Tie Point";
             map[TagPhotoshopSettings] = "Photoshop Settings";
             map[TagInterColorProfile] = "Inter Color Profile";
             map[TagExposureProgram] = "Exposure Program";
@@ -874,6 +894,8 @@ protected static void AddExifTagNames(Dictionary<int, string> map)
             map[TagLensMake] = "Lens Make";
             map[TagLensModel] = "Lens Model";
             map[TagLensSerialNumber] = "Lens Serial Number";
+            map[TagGdalMetadata] = "GDAL Metadata";
+            map[TagGdalNoData] = "GDAL No Data";
             map[TagGamma] = "Gamma";
             map[TagPrintImageMatchingInfo] = "Print Image Matching (PIM) Info";
             map[TagPanasonicTitle] = "Panasonic Title";