* populate most session item properties from create-item.lua to keep
things more compact and readable
* use a standard naming scheme for the session item properties
* use session item properties instead of node properties in policy-node.lua
* improve policy-node's performance by converting the properties dictionary
less times for each session item
* refactor some policy logic and make things slighly more readable
* change the accepted values for 'context' in wp_si_linkable_get_ports();
use "input" and "output" to keep things clear, because the previous use
of NULL and "reverse" were implying that a node has only one "standard"
direction, but this is complicated for sinks w/ monitors and duplex nodes
* allow using monitors (which are Audio/Sink nodes in fact) as sources
* treat Audio/Duplex nodes as sinks, like p-m-s does
* respect the "stream.capture.sink" property of streams
Fixes#66
- sanitize printing properties with tostring(), which will properly
convert nil values to the string "nil"
- ensure some properties become empty strings if they are nil
Allows relinking client nodes to other devices if the current device has been
removed. This allows audio to keep playing in a different device if a bluetooth
device is disconnected.
The policy scripts can handle now client nodes that want to be linked with other
client nodes. This is needed for nodes created by the Pulse Audio Volume Control
to monitor audio comming from other application client nodes.
These don't make much sense here. In the endpoint policy we want
the clients to be linked to the endpoint that matches their role
and never move.
Also, endpoint priorities are useless. If no endpoint matches the
role, then just ignore the client.
