[TIM] how to read current TIxF state

I want to know the current level of the channel-input filter's output, marked as TIxF on the diagrams and in narrative.

I know I could read the respective pin, but that's not the same - it misses the filtering aspect, i.e. a single read might inadvertently read the incorrect level of a short pulse.

I know the answer is probably "no way" in current TIM incarnations, but maybe somebody knows a trick.

Otherwise, it's up to the wishlist - maybe as additional SR bits (and then the current OCxREF state would be nice to be observable, too).

JW