DeckLinkSrc Element for windows

Josh Doe josh at
Mon Jun 20 11:16:46 PDT 2011

Hi William,
I have begun converting the element to WIndows, but am new to COM so
it is taking me a little while. I believe the only elements that use
COM are the DirectShow ones, so I've copied the initialization code
from there. I'm also new to to MIDL, so I had to read up on that and
convert the IDL file provided by Blackmagic to a header file. I'll try
and work on it more this week so hopefully I can get something out for
you to test.

On Fri, Jun 17, 2011 at 3:08 PM, William Metcalf <wmetcalf at> wrote:
> Hello all,
> I am working on a application that needs to read from DeckLink capture
> cards.  I recently found out that there is a decklink source element that
> works with Linux, but not with Windows.  I have downloaded the files for it
> in an attempt to convert it to work for windows, but I feel like I might be
> getting in a little over my head.  Has anyone out there converted this
> element to work for windows already, or does anyone know what all I need to
> change to get the DeckLinkSrc to work with Windows?  I think mostly all that
> needs to change is how COM is used and how it loads libraries, but I am not
> very experienced and working with either.  This element would be extremely
> helpful in windows, however, and would save me a ton of work trying to read
> in raw video myself and push it through a pipeline with appsrc.
> Thank everyone in advance,
> William
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