Add the 'const' attribute to let the compiler know that it doesn't
need to call it multiple times for the same debug level argument,
since the enabled log levels cannot change at runtime.
The 'installed' signal can be used to know that there are no
known objects that are being prepared internally, so the object
manager is ready to use.
This also improves internal state management so that the 'objects-changed'
signal cannot be fired earlier than it should. Previously there
were corner cases with complex proxy features, as the object manager
relied on the fact that after a core 'sync' it is safe to assume
that all proxies are augmented... that's not always the case.
+ expose the export transition in the session item class
+ make the export-related flags immutable
+ add an export error flag
+ update and improve documentation
+ replace calling execute_step(..., STEP_ERROR) with rollback
+ implement deactivate internally using rollback
This unifies deactivation steps, which are common between deactivate()
and calling execute_step() with WP_TRANSITION_STEP_ERROR at the
end of a failed activation transition.
This extends GLib's logging system, so it is compatible with
g_debug() and friends, but it uses a better logging format and
supports filtering debug domains with wildcards, like in gst.
* It should be possible to activate/deactivate while an item
is exported (if the item supports it, but that's a subclass matter)
* It should be possible to deactivate without resetting configuration
This feature enables the caching of WpEndpointStream objects
inside WpEndpoint, making information about streams readily
accessible to the user of an endpoint
This allows having constraints on the pw properties and the GObject
properties of the proxy, instead of just on the global properties.
This is only useful for constraints on impl proxies, since the globals
coming from the registry don't have a proxy object associated at the
time they are added in the object managers
