Extension for a legacy filter support.

[GoogleCodeExporter]

1. Add DirectShow Legacy filters support.
2. Add an event after creating the IBaseFilter in WorkerThread, for ability to 
update custom filter properties.

The patch is attached.

Thanks,
David

Original issue reported on code.google.com by David.Ao...@gmail.com on 25 Dec 2013 at 8:25

Attachments:

• Video.DirectShow.patch