modules: support overriding default module arguments

Add support for some modules to use a module.$NAME.args config section
to override the arguments of the module. Update the docs.

Add more conditions to the module loading, use !false to also load the
module when the condition is not set and so that we don't have to
explicitly set each condition to true.

Improve module-profiler example config.

src/modules/module-jackdbus-detect.c

@@ -61,6 +61,17 @@
  *  }
  * ]
  *\endcode
+
+ * ## Config override
+ *
+ * A `module.jackdbus-detect.args` config section can be added in the override directory
+ * to override the module arguments.
+ *
+ *\code{.unparsed}
+ * module.jackdbus-detect.args = {
+ *     #tunnel.mode    = duplex
+ * }
+ *\endcode
  *
  */
 
@@ -359,6 +370,9 @@ int pipewire__module_init(struct pw_impl_module *module, const char *args)
 	impl->context = context;
 	impl->properties = args ? pw_properties_new_string(args) : NULL;
 
+	if (impl->properties)
+		pw_context_conf_update_props(context, "module."NAME".args", impl->properties);
+
 	impl->conn = spa_dbus_get_connection(dbus, SPA_DBUS_TYPE_SESSION);
 	if (impl->conn == NULL) {
 		res = -errno;

src/modules/module-profiler.c

@@ -38,7 +38,7 @@
  *
  * - `profile.interval.ms`: Can be used to avoid gathering profiling information
  *			    on every processing cycle. This allows trading off
- *			    CPU usage for profiling accuracy.
+ *			    CPU usage for profiling accuracy. Default 0
  *
  * ## Example configuration
  *
@@ -47,9 +47,24 @@
  *
  *\code{.unparsed}
  * context.modules = [
- * { name = libpipewire-module-profiler }
+ * { name = libpipewire-module-profiler
+ *   args = {
+ *       #profile.interval.ms = 0
+ *   }
+ * }
  * ]
  *\endcode
+
+ * ## Config override
+ *
+ * A `module.profiler.args` config section can be added in the override directory
+ * to override the module arguments.
+ *
+ *\code{.unparsed}
+ * module.profiler.args = {
+ *     #profile.interval.ms = 10
+ * }
+ *\endcode
  *
  * ## See also
  *
@@ -513,6 +528,8 @@ int pipewire__module_init(struct pw_impl_module *module, const char *args)
 	impl->properties = props;
 	impl->main_loop = pw_context_get_main_loop(impl->context);
 
+	pw_context_conf_update_props(context, "module."NAME".args", props);
+
 	impl->interval = SPA_NSEC_PER_MSEC *
 		pw_properties_get_uint32(props, "profile.interval.ms", DEFAULT_INTERVAL);
 	impl->last_signal_time = 0;

src/modules/module-rt.c

@@ -115,6 +115,17 @@
  * }
  * ]
  *\endcode
+ *
+ * ## Config override
+ *
+ * A `module.rt.args` config section can be added in the override directory
+ * to override the module arguments.
+ *
+ *\code{.unparsed}
+ * module.rt.args = {
+ *      nice.level = 22
+ * }
+ *\endcode
  */
 
 #define NAME "rt"
@@ -1076,6 +1087,7 @@ int pipewire__module_init(struct pw_impl_module *module, const char *args)
 		res = -errno;
 		goto error;
 	}
+	pw_context_conf_update_props(context, "module."NAME".args", props);
 
 	impl->context = context;
 	impl->nice_level = pw_properties_get_int32(props, "nice.level", DEFAULT_NICE_LEVEL);