Make it possible to pass a spa_node as the follower of the adapter. This
avoids us having to wrap it in a pw_impl_node in order to unwrap it
again for the adapter spa_node.
First collect all the graph objects and then parse them in the
right order. Otherwise, we might try to parse links before the nodes if
they are first in the JSON string.
Fixes#1950
When the client destroys the protocol-native module, the server
and the client are destroyed but the client is still reffed (not freed).
It will be unreffed after its messages are processed, after which point
it will be freed and removed from the server client_list that is already
destroyed.
Fix this by removing the client from the server list when it is
destroyed.
See #565
Guess the expected latency with the stream info we have and use that as
the node.latency. This way, the graph can attempt to start with some
sort of latency setting.
After we know the exact format, we can calculate the real latency and we
will update the node latency accordingly.
Add a refcount to resource and client so that we can keep them alive
while the native protocol is using them.
One problem might be that the protocol destroys the client or resource
while handling it and that would cause errors.
Fixes#565
So that all nodes attach to some driver to be scheduled.
For the virtual sink/sources this is a normal thing and we can remove
the custom settings.
For normal stream, this now makes it possible to link pw-play directly
to pw-record and have it transport data.
Fixes#1761
It's possible that the stream is sent an error when the session manager
can't link the node (because, for example, the sink/source is not
available yet). We should not stop but just log this error.
When the session manager actively kills the stream (when it is
reconnected while the DONT_RECONNECT flag is true) we will end up in the
UNCONNECTED state and that's when we can unload the module.
