create-item: handle all kinds of Audio/Video & Stream nodes

And be careful not to handle nodes created by si-audio-endpoint,
by using a specific property for that.

Also, use Audio/{Source,Sink}/Virtual as the media class of null sinks
created by si-audio-endpoint, it sounds more appropriate.

Fixes #34

modules/module-si-audio-endpoint.c

@@ -182,6 +182,8 @@ si_audio_endpoint_enable_active (WpSessionItem *si, WpTransition *transition)
   g_autofree gchar *name = g_strdup_printf ("control.%s", self->name);
   g_autofree gchar *desc = g_strdup_printf ("%s %s Endpoint", self->role,
       (self->direction == WP_DIRECTION_OUTPUT) ? "Capture" : "Playback");
+  g_autofree gchar *media = g_strdup_printf ("Audio/%s/Virtual",
+      (self->direction == WP_DIRECTION_OUTPUT) ? "Source" : "Sink");
 
   if (!wp_session_item_is_configured (si)) {
     wp_transition_return_error (transition,
@@ -194,10 +196,11 @@ si_audio_endpoint_enable_active (WpSessionItem *si, WpTransition *transition)
   self->node = wp_node_new_from_factory (core, "adapter",
       wp_properties_new (
           PW_KEY_NODE_NAME, name,
-          PW_KEY_MEDIA_CLASS, "Audio/Duplex",
+          PW_KEY_MEDIA_CLASS, media,
           PW_KEY_FACTORY_NAME, "support.null-audio-sink",
           PW_KEY_NODE_DESCRIPTION, desc,
           "monitor.channel-volumes", "true",
+          "wireplumber.is-endpoint", "true",
           NULL));
   if (!self->node) {
     wp_transition_return_error (transition,

src/scripts/create-item.lua

@@ -30,12 +30,21 @@ function addItem (node, item_type)
   end)
 end
 
-nodes_om = ObjectManager { Interest { type = "node",
-  Constraint { "media.class", "c",
-    "Stream/Input/Audio", "Stream/Output/Audio", "Stream/Input/Video",
-    "Audio/Source", "Audio/Sink", "Video/Source",
-    type = "pw-global" },
-} }
+nodes_om = ObjectManager {
+  Interest {
+    type = "node",
+    Constraint { "media.class", "#", "Stream/*", type = "pw-global" },
+  },
+  Interest {
+    type = "node",
+    Constraint { "media.class", "#", "Video/*", type = "pw-global" },
+  },
+  Interest {
+    type = "node",
+    Constraint { "media.class", "#", "Audio/*", type = "pw-global" },
+    Constraint { "wireplumber.is-endpoint", "-", type = "pw" },
+  },
+}
 
 nodes_om:connect("object-added", function (om, node)
   local media_class = node.properties['media.class']