[Bug 769266] vaapi encoder should not accept all caps

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=769266

--- Comment #7 from Víctor Manuel Jáquez Leal <vjaquez at igalia.com> ---
Before my vacations I worked on "a proper fix" for this issue. This are my
findings:

In Haswell, if we query the created VA context, we got these possible color
formats to be uploaded: NV12, I420 and YV12

Nonetheless, it is impossible to get those values without creating the encoder
context, and to create the encoder context it is mandatory to have a
GstVaapiContextInfo with all the sink caps. This implies to have, already, the
negotiated color format.

Thus we have an "API level dead lock": we need the VA context to get the
possible formats to upload, and we need to know the format to upload to create
the VA context.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.