v4l2src io-mode=4 and waylandsink rendering issue

[Matteo Valdina]

Hi,
I'm using two separate pipeline in the same process where the input is a
v4l2src and DMAbuf.
The input feed is different but when I render with the waylandsink the two
pipelines content is mixed. Both display the same content and flicker
between the two contents.

 It looks like using DMA pool is shared across these two pipelines.

I pass the wl_display and wl_surface to the waylandsink and I also tried to
pass two different wl_display but it doesn't make any difference.

Changing io-mode=4 (dmabuf) to something else (2 mmap) solved the issue.

Any suggestions?

Best
Matteo Valdina
-- 
“There are two ways of constructing a software design: One way is to make
it so simple that there are obviously no deficiencies, and the other way is
to make it so complicated that there are no obvious deficiencies. The first
method is far more difficult.”
- Tony Hoare
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