IMFMediaSourceEx and SetD3DManager guidance

Question

In the MediaExtensions sample, there is a IMFMediaSourceEx example (GeometricSource).  It implements IMFMediaSourceEx.

With IMFMediaSourceEx::SetD3DManager, are we guaranteed to always get the D3D manager set when used with IMFMediaEngine/Xaml MediaElement/<Video> tag?  Or do we need to make sure to have a fallback?  

Also can we use our own DXGIDevice? or do we use the one supplied in the IMFDXGIDeviceManager?

Thanks!

-Jer

Answer 1

Hello,
 
Thanks for your feedback, I will involve more experts to investigate it.
 
Best regards,
Jesse

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Jesse Jiang [MSFT]
MSDN Community Support | Feedback to us

Answer 2

Hello Imorrill,

AFAIK if you implement the IMFMediaSourceEx and have the "D3D11_AWARE" attribute set appropriately you should get reference to a D3D Manager in your source in most scenarios. Using the MediaElement from XAML and using the <video> tag in HTML5 I expect that you will always get a D3D manager. However, you many not get this interface if your source is participating in a transcode topology or a capture topology that does not render to a D3D aware device. You should not use your own DXGIDevice although it is possible to do so if you architect your application to control a custom swap chain. However, this is not usually necessary and is not recommended.

I hope this helps,

James

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Windows Media SDK Technologies - Microsoft Developer Services - http://blogs.msdn.com/mediasdkstuff/

Answer 3

Thanks for the answer!