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
