Add link.min-buffers option to set the minimum amount of buffers to
create for links. Set this by default to 2 because we really need two
now in case the sink xruns and does async mixing.
Make this an option because in low-memory cases and when xruns are not
expected, we can set this to 1.
Make a rtprio-server and rtprio-client option. Leave the server
priority by default to 88 but lower client priority to 83. JACK
does something similar by setting clients to rtprio-server - 5.
Make module-rt use the client priority by default and bump the server
priority explicitly in the config file.
Leave the pulse-server to the default rtprio-client, there is no reason
to lower this any further because it is really just a regular client.
Bump the ffado packetizer thread to rtprio-server + 5 because that is
also what JACK does.
88 is still much higher than the value of 60 that JACK uses in
Fedora but now this is at least configurable.
In JSON, the colon actually is used for assignment, but in spa_type_info
the colon is used as a separator. To properly parse and pass the
properties to the videotestsrc, the key has to be enclosed by quotation
marks to prevent splitting by the JSON parser.
Commit 9b29bcd4e8 ("conf: set description for test nodes") set the
description only for the minimal.conf and pipewire.conf and skipped the
pipewire-vulkan.conf.
Set the description for pipewire-vulkan.conf, too.
