How do TDC filter modules work?

[Galen Tackett]

I am looking for more information on TDC filter modules and perhaps some sample code for same.

The TDC SDK doesn't include sample code for a filter module. The sample processor module that's provided doesn't make it clear how a filter would work, either. There's also very little discussion of filters in the documentation.

From what's available it's hard to tell for what operations a filter would be called. Clearly, it gets called for the initialize and load operations. But for what others? And what state are things in when it's called?

Can any of you, especially the HP folks who frequent this forum, offer any further information or sample code that might illustrate more about filters?

[Galen Tackett]

I am gradually learning a bit more about TDC prodessor modules from the manual. It's taken some study but I believe I'm catching on.

If I have problems down the road with TDC processor modules I'll open a new thread.