private static IExifValue GetOffsetValue(List <IExifValue> ifdValues, List <IExifValue> values, ExifTag offset)
{
int index = -1;
for (int i = 0; i < ifdValues.Count; i++)
{
if (ifdValues[i].Tag == offset)
{
index = i;
}
}
if (values.Count > 0)
{
if (index != -1)
{
return(ifdValues[index]);
}
ExifValue result = ExifValues.Create(offset);
ifdValues.Add(result);
return(result);
}
else if (index != -1)
{
ifdValues.RemoveAt(index);
}
return(null);
}
/// <summary>
/// Sets the value of the specified tag.
/// </summary>
/// <param name="tag">The tag of the exif value.</param>
/// <param name="value">The value.</param>
internal void SetValueInternal(ExifTag tag, object value)
{
foreach (IExifValue exifValue in this.Values)
{
if (exifValue.Tag == tag)
{
exifValue.TrySetValue(value);
return;
}
}
ExifValue newExifValue = ExifValues.Create(tag);
if (newExifValue is null)
{
throw new NotSupportedException();
}
newExifValue.TrySetValue(value);
this.values.Add(newExifValue);
}