private static IntPtr GetTransformPtr(SinkWriter writer, int streamIndex)
{
if (writer == null)
{
throw new ArgumentNullException(nameof(writer));
}
var tf = IntPtr.Zero;
try
{
writer.GetServiceForStream(streamIndex, Guid.Empty, typeof(Transform).GUID, out tf);
}
catch
{
// do nothing
}
return(tf);
}
