private static ExifValue GetOffsetValue(Collection <ExifValue> ifdValues, Collection <ExifValue> values, ExifTag offset)
{
var index = -1;
for (var i = 0; i < ifdValues.Count; i++)
{
if (ifdValues[i].Tag == offset)
{
index = i;
}
}
if (values.Count > 0)
{
if (index != -1)
{
return(ifdValues[index]);
}
var result = ExifValues.Create(offset);
ifdValues.Add(result);
return(result);
}
else if (index != -1)
{
ifdValues.RemoveAt(index);
}
return(null);
}
public void SetValue <TValueType>(ExifTag <TValueType> tag, TValueType value)
{
var currentValue = GetValue(tag);
if (currentValue != null)
{
currentValue.Value = value;
return;
}
var newExifValue = ExifValues.Create(tag);
newExifValue.Value = value;
_values.Add(newExifValue);
}
private ExifValue CreateValue(ExifTag tag, ExifDataType dataType, uint numberOfComponents)
{
var exifValue = ExifValues.Create(tag);
if (exifValue == null)
{
return(null);
}
var value = ReadValue(dataType, numberOfComponents);
if (!exifValue.TrySetValue(value))
{
return(null);
}
return(exifValue);
}
