This removes both the policy-virtual-client.lua and policy-virtual-device.lua
scripts, and creates a new linking/find-virtual-target.lua script to link
clients with virtual session items if one of them can be found. In addition to
this, this patch also ports the policy-virtual-client-links.lua into a new
scripts/rescan-virtual-links.lua to use the event stack. The idea is for the
scripts/link-target.lua to create all links but only activate non virtual links,
and for the scripts/rescan-virtual-links.lua to activate/deactivate virtual
links based on role priorities.
It is better to have type-specific event names to minimize the amount
of constraint string matches we do on hooks, as most hooks (if not all)
are interested on specific types of objects only.
Similarly, use a different object manager for each object type to
minimize the performance impact of iterations and lookups, as all
such actions are interested in only 1 object type every time.
Port all existing hooks to the new event names and the get-object-manager API.
* Use a common function to unwrap the objects out of the event
* Use the same common function to get the si flags
* Do not store back the si flags - there is no point in doing that,
tables are objects in lua and they are passed around by reference
* Store the target on the event
- WirePlumber Lua now facilitates Lua libraries/modules, utilize this and create
modules. Add some tests around this functionality.
- Create policy-hooks.lua containing all the hooks to find-target events
- Create policy-utils.lua module and push all the policy utility functions to it.
- Create common-utils.lua module and push the common utility functions to it.
- Remove all the above functionality from policy-node.lua and clean it up.
