Re: ISampleGrabber

On Mon, 23 Oct 2006 00:45:56 +1000, Robert Kirk wrote:


Graph is: VCap camera => SamplGrabber => Video Renderer.
I setup the address to my callback function in SamplGrabber filter..
But when it runs I see blank black image (the zero content of the Sample
buffer).
Check my code, please, fellas:

Firstly, make sure you are actually getting inserted correctly - check the
graph in GraphEdit.

Are you sure the callback is being called?

Secondly, I'm not sure how you are determining that the buffer is full of
nothing. Have you code that checks or are you trying to blit it somewhere.

Iain

--
Iain Downs (DirectShow MVP)
Commercial Software Therapist
www.idcl.co.uk
.

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