internal IFDField GetIFDField <T>(byte[] fieldBytes, Endianness e)
{
IFDField result = new IFDField();
byte[] sortedFieldsBytes = SortIFDFieldBytes(e, fieldBytes);
result.FieldCode = ByteManager.GetUIntValue(ByteManager.ChopByteArray(sortedFieldsBytes, 0, 2));
LoadFieldName <T>(ref result);
result.ValueElementType = ByteManager.GetUIntValue(ByteManager.ChopByteArray(sortedFieldsBytes, 2, 2));
result.ValueElementsCount = ByteManager.GetIntValue(ByteManager.ChopByteArray(sortedFieldsBytes, 4, 4));
result.FieldValueElements = ByteManager.ChopByteArray(sortedFieldsBytes, 8, 4);
result.ValueElementsOffset = 0;
TagElementTypeMappingDictionary typesDictionary = TagElementTypeMappingDictionaryFactory.GetMappingDictionary(typeof(T));
if (result.FieldCode > 0 && typesDictionary.ContainsKey(result.ValueElementType))
{
result.IsOffset = (result.ValueElementsCount * typesDictionary[result.ValueElementType].BytesLength > 4);
result.FieldValueElements = ByteManager.ChopByteArray(sortedFieldsBytes, 8, 4);
}
if (result.IsOffset)
{
result.ValueElementsOffset = ByteManager.GetIntValue(result.FieldValueElements);
}
return(result);
}
internal string GetIFDTextValue <T>(Type enumType, uint code, byte[] b)
{
object value = null;
string result = string.Empty;
TagElementTypeMappingDictionary typeDictionary = TagElementTypeMappingDictionaryFactory.GetMappingDictionary(typeof(T));
if (typeDictionary.ContainsKey(code))
{
switch (typeDictionary[code].DestinationType.ToString())
{
case "System.String":
case "System.Byte":
value = ByteManager.GetValue <string>(b);
break;
case "System.UInt16":
case "System.UInt32":
value = ByteManager.GetValue <uint>(b);
break;
case "System.Int16":
case "System.Int32":
value = ByteManager.GetValue <int>(b);
break;
case "System.ULong":
value = ByteManager.GetValue <ulong>(b);
break;
case "System.Long":
value = ByteManager.GetValue <long>(b);
break;
case "BAFactory.Fx.Utilities.Encoding.Rational":
Rational rat = ByteManager.GetValue <Rational>(b);
value = string.Format("{0:F} ({1}/{2})", rat.Value, rat.Numerator, rat.Denominator);
break;
}
}
if (value != null)
{
if (enumType != null)
{
result = Enum.ToObject(enumType, value).ToString();
}
else
{
result = value.ToString();
}
}
return(result);
}
internal int LoadFieldTextValue <T>(ref IFDField field, List <byte> fileBytes, int fieldDataOffset, int tiffHeaderOffset, Endianness e, int lastBlockByteFileOffset)
{
int result = lastBlockByteFileOffset;
byte[] valueBytes;
TagElementTypeMappingDictionary typeDictionary = TagElementTypeMappingDictionaryFactory.GetMappingDictionary(typeof(T));
if (field.IsOffset)
{
long fixedOffset = 0;
if (field.Block == IFDHeaderType.ExifIFD)
{
fixedOffset = tiffHeaderOffset + (long)field.ValueElementsOffset;
}
else
{
fixedOffset = fieldDataOffset + (long)field.ValueElementsOffset - 8;
}
valueBytes = ByteManager.ChopByteArray(fileBytes.ToArray(), fixedOffset, (int)field.ValueElementsCount * typeDictionary[field.ValueElementType].BytesLength);
if (lastBlockByteFileOffset < fieldDataOffset + (long)field.ValueElementsOffset - 8 + (int)field.ValueElementsCount * typeDictionary[field.ValueElementType].BytesLength)
{
result = fieldDataOffset + field.ValueElementsOffset - 8 + field.ValueElementsCount * typeDictionary[field.ValueElementType].BytesLength;
}
}
else
{
valueBytes = field.FieldValueElements;
}
TagCodeEnumDictionary enumsDictiornary = FieldCodeEnumDictionaryFactory.GetFieldCodeEnumDictionary <T>();
Type enumType = null;
if (enumsDictiornary.ContainsKey(field.FieldCode))
{
enumType = enumsDictiornary[field.FieldCode];
}
field.Text = GetIFDTextValue <T>(enumType, field.ValueElementType, valueBytes);
return(result);
}
internal static TagElementTypeMappingDictionary GetMappingDictionary(Type t)
{
TagElementTypeMappingDictionary result = null;
switch (t.ToString())
{
case "BAFactory.Fx.FileTags.Exif.IFD.IFDTagCode":
result = new IFDTagElementTypeMappingDictionary();
break;
case "BAFactory.Fx.FileTags.Exif.MakerNotes.Nikon.NikonType1MakerNotesTagCode":
result = new NikonType3MakerNotesTagElementTypeMappingDictionary();
break;
case "BAFactory.Fx.FileTags.Exif.MakerNotes.Nikon.NikonType3MakerNotesTagCode":
result = new NikonType3MakerNotesTagElementTypeMappingDictionary();
break;
case "BAFactory.Fx.FileTags.Exif.MakerNotes.Canon.CanonMakerNotesTagCode":
result = new CanonMakerNotesTagElementTypeMappingDictionary();
break;
}
return(result);
}
internal byte[] GetIFDBytesValue <T>(List <byte> fileBytes, int blockDataOffset, IFDField field, Endianness endianness)
{
byte[] result;
if (field.IsOffset)
{
TagElementTypeMappingDictionary typeMappingDictionary = TagElementTypeMappingDictionaryFactory.GetMappingDictionary(typeof(T));
if (field.Block == IFDHeaderType.ExifIFD)
{
result = ByteManager.ChopByteArray(fileBytes.ToArray(), 18 + (long)field.ValueElementsOffset - 8, (int)field.ValueElementsCount * typeMappingDictionary[field.ValueElementType].BytesLength);
}
else
{
result = ByteManager.ChopByteArray(fileBytes.ToArray(), blockDataOffset + (long)field.ValueElementsOffset - 8, (int)field.ValueElementsCount * typeMappingDictionary[field.ValueElementType].BytesLength);
}
}
else
{
result = field.FieldValueElements;
}
return(result);
}
