[Bug 796626] [Feature requirement] PRIME Buffer Sharing (Buffer Import/Export).

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796626

--- Comment #8 from sreerenj <bsreerenj at gmail.com> ---
I believe the request is like this:

Assume there is an upstream element which can provide gem_buffer handle,
then gst-vaapi can bind it to vaSurface similar to what we do for dmabuf and
avoid the copy.

Second use case: assume there is a downstream element which can work on
gembuffer handle (eg: get eglimage from the gembuffer id), then gst-vaapi can
extract the gem-buffer-id from vasurface and export it to downstream (similar
to dmabuf).

Now questions:
1: Is there any customer using gem-buffer like this without using dmabuf?
2: We have dmabuf which should work for any use case, so do we really need it
other than just for a feature completeness ? :)

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