This solves the problem of linkables not created for libcamera nodes. It makes
sense to run monitors towards the end when rest of the system is really
waiting for them.
A profile is a list of features set to required/optional/disabled
which governs which components are getting loaded, given a static
components list with well-defined dependencies
Each component can now list required and optional dependencies,
using the component feature names to match other components.
In addition, each component feature can be declared as required, optional
or disabled, making optional components easier to deal with.
The component flags (ifexists, nofail) have been removed.
Using virtual components, this system also allows easier customization
of which components should be loaded for a specific configuration,
without requiring the user to copy the list of components and edit it.
Also bump the required glib version to 2.68 for g_assert_cmpstrv()
Each component can optionally "provide" a feature, which is basically
a string that describes the feature (ex. "support.dbus"). If the
component loads successfully, the feature is marked as provided and
can be tested for its presence with wp_core_test_feature()
Now that we have proper module load order, we can have this shared
dbus connection in a module instead of the library. The module has
to be loaded before any other modules that need it, obviously.
Disable bluez5.auto-connect.
It makes PW to try connect to all locally known BT audio devices on
start, which is in general not a good thing to do.
Some BT adapters are not capable of simultaneous audio streaming and
scanning for connections (e.g Raspberry Pi builtin BT, probably more),
so audio stutters until adapter/kernel give up trying to connect to
devices that cannot be reached.
Disabling it makes devices to not reconnect on user VT switch, but also
that we should only do for devices that were connected when logind
switched.
After a timeout, it's possible that something else may have
destroyed the node already. This can happen for example with virtual
sinks that were created from another process.
Fixes: #467
libcamera uses namespaces to sandbox IPA (Image Processing Algorithm)
modules because they are sometimes proprietary binary blobs. The
RestrictNamespaces option in Wireplumber's systemd service breaks this
sandboxing when libcamera is loaded via the libcamera SPA module, so
cameras requiring an IPA do not work.
This commit removes RestrictNamespaces so that the sandboxing works
again. I've confirmed that after this change wireplumber works with
libcamera with an IPA module.
Resolves#466
There is no reason to return the component object... all components
are supposed to be long-lived objects that are referenced by the
registry and there is API to find them. The caller is only interested
in the success or failure of the operation.
Regarding the core parameter, the case used to be that WpComponentLoader
was a WpPlugin, so it had a reference to the core internally, but since
this is no longer a requirement, we need to pass this explicitly
Syslog calls this level "notice" and I prefer it because we use it
to display significant messages that are not warnings, but they
are not really "standard", as GLib wants them to be. There is nothing
"standard" about log messages in general.
Also, make these notice messages be enabled at debug level 2, together
with warnings. The default log.level is 2 and it is a good idea to show
notices by default too.
Finally, show them in the log with "N" and also change criticals to be
shown with "E", meaning "error"... Then promote G_LOG_LEVEL_ERROR
messages to be shown with "F", meaning "fatal", because in fact these
messages are always fatal and always call abort(). Still, keep the term
"critical" in the functions to make sure that whoever uses them is aware
that this level is only for critical conditions and not suitable to
display any kind of error.
The intention is to make checks for enabled log topics faster.
Every topic has its own structure that is statically defined in the file
where the logs are printed from. The structure is initialized transparently
when it is first used and it contains all the log level flags for the levels
that this topic should print messages. It is then checked on the wp_log()
macro before printing the message.
Topics from SPA/PipeWire are also handled natively, so messages are printed
directly without checking if the topic is enabled, since the PipeWire and SPA
macros do the checking themselves.
Messages coming from GLib are checked inside the handler.
An internal WpLogFields object is used to manage the state of each log
message, populating all the fields appropriately from the place they
are coming from (wp_log, spa_log, glib log), formatting the message and
then printing it. For printing to the journald, we still use the glib
message handler, converting all the needed fields to GLogField on demand.
That message handler does not do any checks for the topic or the level, so
we can just call it to send the message.
This keeps the original head pointer intact, so that we can effectively
free the list later. If we use the head pointer to iterate, then at the
end we are not freeing anything because the pointer is NULL
This should be considered a configuration error: the user has
specified some component in the config file that cannot be loaded.
Changing the configuration file should fix it.
Since the wireplumber configuration has been moved to /usr/share/pipewire, it
does not makes sense to have a different path for the WIREPLUMBER_CONFIG_DIR
environment variable. Therefore, the WIREPLUMBER_CONFIG_DIR environment variable
has been changed to just be an alias of PIPEWIRE_CONFIG_DIR. Finally, Lua
scripts are now installed under /usr/share/wireplumber/scripts instead of
/usr/share/pipewire/scripts as they are a wireplumber feature only.
This change completely refactors the way components are loaded in wireplumber:
- The module_init() function must return a GObject now. This object is either
a WpPlugin or a WpSiFactory in the current modules.
- When the component loader initializes a module, it automatically registers
the WpPlugin or WpSiFactory with their respective methods. There is no need
to register the WpPlugin or WpSiFactory in the module now.
- The wp_core_load_component() API has been refactored to be asynchronows. This
allows the component loader to automatically activate WpPlugin objects, and
therefore allows the application to directly get the WpPlugin without having
to find it. This simplifies a lot of things.
- The 'ifexists' and 'nofail' component flags now work even if the respective
WpPlugin could not be activated.
- The code that loads components in main.c has also been simplified a lot,
and the option to load dangling components has also been removed.
