Zero copying from shmsrc to shmsink possible

Olivier CrĂȘte olivier.crete at
Tue Aug 8 18:30:00 UTC 2017

Right now, no there isn't. I think we could create some kind of
src/sink that uses fd passing, I don't think it would be very hard to
do. I think we could either have a sink/src combo that passes fds, or
even have shmsink/shmsrc handle that somehow.
On Sun, 2017-08-06 at 23:44 +0200, Peter Maersk-Moller wrote:
> Hi.
> Assuming you have a pipeline ending in a shmsink like this
>   gst-launch-1.0 ...something ! shmsink socket-path=/tmp/sockA wait-
> for-connnection=0
> And then you in a second pipeline have something like this
>   gst-launch-1.0 shmsrc socket-path=/tmp/sockA ! queue ! shmsink
> socket-path=/tmp/sockB wait-for-connnection=0
> Is there then a way that the second shmsink (sockB) can reuse the the
> shmarea allocated by the shmsink sockA so this can work with zero
> copying ? Or will there always have to be a buffer copying from
> shmsrc sockA to shmsink sockB in the above example?
> Regards
> Peter MM
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at
Olivier CrĂȘte
olivier.crete at
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