It is possible that during this process some object managers emit
their "installed" signal, and it is possible that some object managers
are destroyed within the handler of this signal, ending up with a dangling
object manager pointer (since we do not ref object managers in the registry)
and with a modified object_managers list during iteration...
Related to: #534
This is a new rules section that allows defining rules to modify
component definitions. This is useful to add repetitive dependencies,
for example, as in the case of "type = script/lua" that always requires
the "support.lua-scripting" feature. This can also be useful to modify
other component properties, such as the arguments, in overriding
configuration files, without needing to redefine the whole components
section.
The previous naming convention was confusing because it did not make
it explicit that the string is not being copied. We had this wrong already
in the Lua bindings and thanks to some miracle it hasn't backfired so far
(it was using the "wrap" behaviour with a string that doesn't stay alive).
In some places we actually need the "copy" behaviour and in some other
places we need the "wrap" behaviour, so let's have both variants available.
The purpose is to wrap some utilities that pipewire provides that use JSON.
Start by wrapping pw_conf_match_rules(), which despite its name, it has nothing
to do with the configuration object. It operates directly on JSON and can be
useful to work with match rules outside the context of configuration files.
Previously, the `deps` variable was reused for parsing
the required and wanted dependencies of a component,
which lead to the old value allocated here:
if (wp_spa_json_object_get (json, "requires", "J", &deps, NULL)) {
being leaked when a bit later
if (wp_spa_json_object_get (json, "wants", "J", &deps, NULL)) {
succeeded.
Fix that by using two separate variables.
This reverts commit 2ae1b3cbd9.
This is not a good API. It was only allowed temporarily in 0.4.15
to get things done. We should approach this properly in 0.5
This reverts commit 9def3f96d2.
This was never a good idea, as it turns out. It was not used in practice because
it was breaking other things (see 370b692933)
and now it appears to be causing more problems in Lua object managers that don't
install because they are waiting for inactive links to become active.
Fixes: #518
A core sync is not really necessary here because whatever objects the remote
pipewire daemon has to announce have already been sent to us on a message
and this message is already being processed at this point. This means, we are
not going to be returning to the main loop until all the new objects have been
announced and therefore placed into the tmp globals array. So, we can also use
an idle callback and achieve the same effect of slightly delaying until all
new globals have been announced.
With an idle callback, we can be more agile and add those new objects immediately
after the message has been processed instead of waiting for a pw_core_sync()
reply, which will come in the next message.
This fixes an odd failure of the si-standard-link test after applying the fix
for #517, which was caused by the fact that the test was previously relying on
a delay caused by some unrelated globals being prepared in the object manager
that tries to verify the graph state. After those globals were removed from the
internal preparation queue, the test would fail to detect the link objects
because they were stuck in the tmp_globals array for too long.
With the previous check, any global matching either the type or the global
properties of the interest would be considered for inclusion in the object
manager and would be prepared only to fail the same check later.
The correct way to check is (variable & (X|Y) == (X|Y)), which is what
SPA_FLAG_IS_SET() expands to.
Fixes#517
not all functions in glib returns a value for the used log fields
in this case a 'g_return_val_if_fail(..) will only set 4 fields an
set the other field to NULL which leads to a segfault
Jul 22 13:41:37 Cynap-Pro-01121508 systemd-coredump[7247]: Process 496 (wireplumber) of user 4242 dumped core.
Stack trace of thread 496:
#0 0x00007f6b2ce58e99 __strlen_avx2 (libc.so.6 + 0x150e99)
#1 0x00007f6b2cf3ebe5 g_log_writer_journald (libglib-2.0.so.0 + 0x5fbe5)
#2 0x00007f6b2d0a9316 wp_log_fields_write_to_journal (libwireplumber-0.5.so.0 + 0x2b316)
#3 0x00007f6b2d0a96f5 wp_log_writer_default (libwireplumber-0.5.so.0 + 0x2b6f5)
#4 0x00007f6b2cf3cf3e g_log_structured_array (libglib-2.0.so.0 + 0x5df3e)
#5 0x00007f6b2cf3d0ae g_log_structured_array (libglib-2.0.so.0 + 0x5e0ae)
#6 0x00007f6b2cf3d4b7 g_logv (libglib-2.0.so.0 + 0x5e4b7)
#7 0x00007f6b2cf3d7ef g_log (libglib-2.0.so.0 + 0x5e7ef)
#8 0x00007f6b29efafef get_node_by_id (libwireplumber-module-cb-ipc.so + 0x24fef)
#9 0x00007f6b29efb032 wp_cb_ipc_get_app_properties (libwireplumber-module-cb-ipc.so + 0x25032)
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()
This allows registering arbitrary objects on the core's registry and
finding them later, without having to add API for each and every object.
I think this is useful enough to have it public, even though it's
probably not going to be used that much... The rationale here is to
allow registering custom component loaders without having to make them
subclass WpPlugin or to create custom API for registering component
loaders specifically.
Also, remove the wp_plugin_register() and wp_si_factory_register()
functions, since they are not going to be used much in the future.
The idea is to let the component loader do the registration under the
scenes, as the component is getting loaded.
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.
Some special characters like '\v' are encoded using 6 characters, which
currently does not work because the VLA size asumes a maximum of 4 characters
per encoded special character. This patch refactors this logic to avoid using
VLAs at all and encodes the string directly into the builder.
See #471
