Remove the memory stuff from the spa API, we can do thing more simple
and efficiently if we always allocate buffers outside of the plugins and
only implement an alloc function on the node when it can do something
clever.
Move serialize code to the props/format/buffer code
Make it possible to copy a format and properties.
Remove port added and port removed, we can get that info by inspecting
the port ids.
Remove data from ringbuffer, we just need the ringbuffer to keep track
of the read and write positions.
Handle async-complete in the main thread
Work on async node initialization
Work on using a queue as the link between nodes
Make the daemon link things based on the node states
Use queue helper in v4l2
Add a link state
Add error quark
Track the state of node we create and error when it is in error.
Handle stream error states when negotiating
Make the node error when a link is in error
Decouple the SPA port ids from the pinos port ids, this allows us to
more easily link and relink things and do dynamic connection later.
Implement multiple output ports on a pinos node.
Make events and command specific to the node
Remove some unused code
Improve state changes
Use easier fixate by just taking the element default value
Fix reuse buffer in the proxy
Remove the port object. We don't use it as a dbus object and we don't
need it, we can use the link and node object directy.
Move poll code and event handler to the node.
Add more buffer types to add and remove memory shared memory between the
server and client. We would like to send buffers only once and then
simply reference them by index.
Do format negotiation and stream start with a START message.
