Add callback functions to g_dbus_own_name

Change-Id: I94d20ef5574688e4dc0df3c07c226e061acf14f5
Signed-off-by: Kazumasa Mitsunari <knimitz@witz-inc.co.jp>

1 files changed, 24 insertions, 1 deletions

diff --git a/src/audiomanager_proxy.c b/src/audiomanager_proxy.c
index 83774d4..0ce63ec 100644
--- a/src/audiomanager_proxy.c
+++ b/src/audiomanager_proxy.c
@@ -626,9 +626,31 @@ void set_event_callback(const am_event* callback){
         G_CALLBACK(_on_set_routing_rundown),    NULL);
 }
 
+static void on_bus_acquired(GDBusConnection *connection, const gchar *name, gpointer user_data){
+    GError* error = NULL;
+    AFB_DEBUG("%s is called", __FUNCTION__);
+    guint id = g_dbus_connection_register_object(connection,
+        SOUND_MANAGER_PATH, NULL, NULL, NULL, NULL, &error);
+    // we don't export interface other than AudioManager so user can't introspect soundmanager method
+    if(id < 1){
+        AFB_ERROR("Failed to register soundmanager: %s", error->message);
+    }
+    AFB_DEBUG("register soundmanager path");
+}
+
+static void on_name_acquired(GDBusConnection *connection, const gchar *name, gpointer user_data){
+    AFB_DEBUG("%s is called", __FUNCTION__);
+}
+
+static void on_name_lost(GDBusConnection *connection, const gchar *name, gpointer user_data){
+    AFB_DEBUG("bus name is lost");
+    // TODO: soundmanager should register current status?
+}
+
 ErrorCode open_soundmanager_interface(const am_instruction *callback){
     guint ret = g_bus_own_name(G_BUS_TYPE_SYSTEM, SOUND_MANAGER_BUS_NAME, G_BUS_NAME_OWNER_FLAGS_NONE,
-        NULL,NULL, NULL, NULL, NULL);
+        on_bus_acquired, on_name_acquired, on_name_lost, NULL, NULL);
+    // see https://developer.gnome.org/gio/stable/gio-Owning-Bus-Names.html#g-bus-own-name
 	AFB_DEBUG( "g_bus_own_name ret: %d", ret);
     GError *error = NULL;;
     GVariant *value;
@@ -660,6 +682,7 @@ ErrorCode open_soundmanager_interface(const am_instruction *callback){
     sigret = g_signal_connect(sm_adapter, "handle-async-set-sink-volume", G_CALLBACK(_on_async_set_sink_volume),NULL);
     sigret = g_signal_connect(sm_adapter, "handle-async-set-source-state", G_CALLBACK(_on_async_set_source_state),NULL);
     gboolean rc = g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(sm_adapter), system_conn, SOUND_MANAGER_PATH, &error);
+    AFB_DEBUG("export soundmanager path result: %d", rc);
     if (FALSE == rc)
     {
         AFB_ERROR( "failed to export");