Overlay to Decklink and GMFBridge

[VBMizio]

Hi all,
I know that the overlay question is a FAQ, but I need to overaly to a DeckLink
BlackMagic card.
Actually I have some graphs connected trough the gmfbridge controller, but I
can start from an easier graph.
The easiest graph I'm thinking, had a source filter (mpeg2 file), a mpg
demultiplexer, a mpg video decoder and finally a decklink renderer filter
(only for the video section, of course).
Can you give me a starting point for the easiest way to overlay a static
image, such as a TV logo, to the output?
Thanks in advance.... Maurizio

[snarfle]

Did you look at the two samples that already show how to do this? DxLogo and
DxText?

[VBMizio]

Hi Snarfle,
thanks for your answer.
Yes, I've given a look at the samples DxLogo and DxText, but they shows hot to
sample each frame by a samlpegrabber, copy it in a memory allocator, draw an
image in this memory allocator and then output all of this.
Have I understood this in the right way?
Actually I don't know nothing about memory allocator, sample grabber and so
on.
There is an easier way to overlay?
In case of a negative answer, do you think that it will be a hard work to
learn about this process?
Thanks agaian... Maurizio

[VBMizio]

Hi,
I'm here again :-)
working on the DxText sample, now I'm able to overlay a static bitmap (also in
png with trasparency).
It seems to be quite easy.
The only problem I had, is that

[VBMizio]

Ops,
excuse me. Just an unaspected "Enter" key pressed :-)
Now I have to use this way to overlay into a gmfbridge based app.
I'll make some tests.
Thanks for now and, I think I'll be here soon :-)