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proxy: use a core sync to know when Props have been enumerated

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This is necessary to finish augmenting nodes that advertise
PropInfo & Props in their param info but they don't actually have
any properties, so there is no param event emitted
(ex. the jack device nodes)

Because the sync is synchronous with the calls over the protocol,
the callback is ensured to be called after all the param events
have been emitted
This commit is contained in:
George Kiagiadakis 2020-06-03 20:28:43 +03:00
parent ed7fa050c5
commit 1bae4a6a41
1 changed files with 16 additions and 4 deletions
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20
lib/wp/proxy.c
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@ -284,6 +284,18 @@ wp_proxy_get_gobj_property (GObject * object, guint property_id, GValue * value,
}
}
static void
wp_proxy_enum_props_done (WpCore * core, GAsyncResult * res, WpProxy * self)
{
g_autoptr (GError) error = NULL;
if (!wp_core_sync_finish (core, res, &error)) {
wp_warning_object (self, "core sync failed: %s", error->message);
}
wp_trace_object (self, "enum props done");
wp_proxy_set_feature_ready (self, WP_PROXY_FEATURE_PROPS);
}
static void
wp_proxy_enable_feature_props (WpProxy * self)
{
@ -303,6 +315,8 @@ wp_proxy_enable_feature_props (WpProxy * self)
}
if (have_propinfo && have_props) {
g_autoptr (WpCore) core = wp_proxy_get_core (self);
if (!klass->enum_params || !klass->subscribe_params) {
wp_proxy_augment_error (self, g_error_new (WP_DOMAIN_LIBRARY,
WP_LIBRARY_ERROR_INVARIANT,
@ -312,6 +326,8 @@ wp_proxy_enable_feature_props (WpProxy * self)
klass->enum_params (self, SPA_PARAM_PropInfo, 0, -1, NULL);
klass->subscribe_params (self, ids, SPA_N_ELEMENTS (ids));
wp_core_sync (core, NULL, (GAsyncReadyCallback) wp_proxy_enum_props_done,
self);
} else {
/* declare as ready with no props */
wp_proxy_set_feature_ready (self, WP_PROXY_FEATURE_PROPS);
@ -1085,10 +1101,6 @@ wp_proxy_handle_event_param (void * proxy, int seq, uint32_t id,
wp_trace_boxed (WP_TYPE_SPA_POD, w_param,
"storing Props on " WP_OBJECT_FORMAT, WP_OBJECT_ARGS (self));
wp_props_store (priv->props, NULL, g_steal_pointer (&w_param));
/* we receive PropInfo before Props; once we get Props, we know we have
completed caching of props, so the feature is ready */
wp_proxy_set_feature_ready (self, WP_PROXY_FEATURE_PROPS);
break;
default:
break;