GStreamer uses _SC_NPROCESSORS_CONF to determine 'max-threads'. On the
Steam Deck, this is configured to be 16 (which is double its number
of logical cores).
_SC_NPROCESSORS_CONF also disregards a process's CPU affinity, thus it
can create more threads than is useful, which ultimately wastes memory
resources.
Using affinity to set 'max-threads' addresses both these problems.
--
v3: winegstreamer: Set MAX_THREADS to 4 for i386.
winegstreamer: Use thread_count to determine 'max-threads' value.
winegstreamer: Use process affinity to calculate thread_count.
https://gitlab.winehq.org/wine/wine/-/merge_requests/5923