[vlc-devel] [PATCH] core: add a callback to init/release data for picture pool of opaque formats

[Rémi Denis-Courmont]

Le lundi 20 avril 2015, 17:16:40 Steve Lhomme a écrit :
> The case where "direct rendering" is not possible is already handled.
> A filter from D3D9 surfaces to I420 planes is automatically added in
> the chain.
> 
> In the case of the D3D9 vout there could be a chance that the D3D9
> device it's using is not the same as the one from DXVA2. That's why
> this handle is passed to the vout and the vout is created accordingly.

The video output does not get to decide what device it renders with. It gets a 
window handle from the UI or the embedding application, and has to render with 
a corresponding device.

So ideally the decoder uses the device it obtains from the output. 
Alternatively, something has to support device-to-device copy.

-- 
Rémi Denis-Courmont
http://www.remlab.net/