Is there any example to show how to write a DirectShow transform filter?

Question

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

Answer 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