[Bug 796908] v4l2: can't use different v4l2 input than the first one that was used

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Thu Aug 2 12:34:00 UTC 2018


https://bugzilla.gnome.org/show_bug.cgi?id=796908

--- Comment #6 from Nicolas Dufresne (ndufresne) <nicolas at ndufresne.ca> ---
(In reply to IƱigo Huguet from comment #5)
> Regarding exposing them as separate devices: only one input can be selected
> on the driver. If one app change the input, it affects to all other apps
> that are using the device (we cannot avoid this, because is the design of
> V4L2 itself).

This is not to worry about, changing inputs while streaming returns EBUSY.

> 
> I don't know anything about how GstDeviceProvider works, but please take
> this into account.

The GstDevice abstract the setup of device property, so it would abstract the
input setup too, also it gives the caps, which are different for each inputs.

> 
> Should I submit an enhancement request regarding this?

Sure, if not already files of course ;-P

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