[Bug 766184] Video distortion with VAAPI when using tee element

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=766184

--- Comment #15 from Víctor Manuel Jáquez Leal <vjaquez at igalia.com> ---
(In reply to Scott D Phillips from comment #8)
> Created attachment 329720 [details] [review]
> [PATCH 3/3] plugins: Add caps parameter to base decide_allocation
> 
> These patches add behavior that is like v4l2, which decides that a video
> meta is required when setting the buffer pool config.
> 
> Víctor, I had to plumb the real caps through to the base decide_allocation
> because it only had the allocation_caps through the query. Look like the
> right way to handle that?

It doesn't seem right. We should use what is in the query, otherwise we would
be breaking what we did for bug 753914 and bug 764316.

Perhaps we should decide to set the allocation_caps in the output state
depending on the used buffer pool, or something.

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