Re: [RFC 0/2] Memory-to-memory media controller topology

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On Sat, 2018-06-16 at 20:31 -0400, Nicolas Dufresne wrote:
> Le vendredi 15 juin 2018 à 17:05 -0300, Ezequiel Garcia a écrit :
> > > Will the end result have "device node name /dev/..." on both
> > > entity
> > > 1
> > > and 6 ? 
> > 
> > No. There is just one devnode /dev/videoX, which is accepts
> > both CAPTURE and OUTPUT directions.
> 
> My question is more ifthe dev node path will be provided somehow,
> because it's not displayed in this topologyé
> 

AFAIU, the device node associated to each media interface object
can be discovered via the G_TOPOLOGY[1] ioctl.

User gets the major:minor tuple, which can be used to get
the node path.

[1] https://linuxtv.org/downloads/v4l-dvb-apis/uapi/mediactl/media-ioc-
g-topology.html



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