tree 27bfcf5cb6561d77c1cb06e7151d11cfbf3f5341
parent da4fbbc6df40a7437448671193204f41035da60e
author Jonas Larsson <ljonas@google.com> 1566264467 -0700
committer Jonas Larsson <ljonas@google.com> 1566264467 -0700

Respond to appsink CONTEXT queries

On GStreamer 1.14 we get different GL context in the two tee branches
which is one reason why the inference branch sees solid black frames
(i.e. all zeroes). Since CONTEXT queries now aren't propagated from
one tee branch to others they never reach glimagesink so it can't
share its context. We thus respond with said context when the query
reaches the appsink, so that only one GL context is shared between
all GL elements. If multiple contexts are used there will be texture
id mismatch between the tee branches.

Change-Id: I7261e1cd480cb8811c3c106bf7b9e2dd557fe48c