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Otherwise creates misordered output.

This holds copyright from numerous people and from the VideoLAN entity

Clear the DPB queue, wait for for asynchronous frames, re-init the PTS instead
of restarting the VT session.

VT is not pacing frame allocation. If we are not fast enough to render
(release) the output pictures, the VT session can end up allocating way too
many frames. This can be problematic for 4K 10bits. To fix this issue, we
ensure that we don't have too many output frames allocated by waiting for the
vout to release them.

A proper way to fix this issue is to allow decoder modules to specify the dpb
and having the vout re-allocating output frames when this number changes.

In order to be notified when the cvpx buffer is released.

Fixes #18855
Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Release textures earlier before the texture cache flush.

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

beause we'll need it for VT
Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

refs #19147 #19146