lua: Expose extra meta through vlc.item.metas.

modules/misc/lua/libs/input.c

@@ -151,6 +151,21 @@ static int vlclua_input_metas_internal( lua_State *L, input_item_t *p_item )
 
 #undef PUSH_META
 
+    vlc_mutex_lock(&p_item->lock);
+    if (p_item->p_meta) {
+        char ** names = vlc_meta_CopyExtraNames(p_item->p_meta);
+        for(int i = 0; names[i]; i++)
+        {
+            const char *meta = vlc_meta_GetExtra(p_item->p_meta, names[i]);
+            lua_pushstring( L, meta );
+            lua_setfield( L, -2, names[i] );
+            printf("setting %s=%s\n", names[i], meta);
+            free(names[i]);
+        }
+        free(names);
+    }
+    vlc_mutex_unlock(&p_item->lock);
+
     return 1;
 }