170271b86f
The staging buffer pool implementation was added to improve throughput performance since we can avoid per-frame CPU copy operation via staging texture but it turned out that we can not make it thread safe. See https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1182 Reverting the staging texture implementation as it does not show any visible value. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2651>