问题
I want to capture a current frame and its previous one to do analysis and produce a new frame to show. Is it to say I must write a transform DirectShow filter? But I am a newbie to DirectShow. I was confused by MSDN's lots of documents. So I wonder if there is any simple example to show how to do it.
Thanks. Cook
回答1:
In the directshow samples that come with the Platform SDK you, at least, always USED to get examples on how to make all sorts of filters. I can't believe they would have removed that. It made DirectShow almost usable :)
This may help:
- Writing Transform Filters
- EZRGB24 Filter Sample
来源：https://stackoverflow.com/questions/1263904/is-there-any-example-to-show-how-to-write-a-directshow-transform-filter