3 files changed, 28 insertions, 1 deletions

diff --git a/src/notification.c b/src/notification.c
index d99a1f8..c76da87 100644
--- a/src/notification.c
+++ b/src/notification.c
@@ -15,6 +15,8 @@
 
 #define COLUMN_COUNT 8
 
+#define X_CANONICAL_PRIVATE_SYNCHRONOUS "x-canonical-private-synchronous"
+
 static void notification_class_init(NotificationClass *klass);
 static void notification_init(Notification *self);
 static void notification_dispose(GObject *object);
@@ -43,6 +45,7 @@ notification_init(Notification *self)
   self->priv->body = NULL;
   self->priv->expire_timeout = 0;
   self->priv->timestamp = NULL;
+  self->priv->is_volume = FALSE;
 }
 
 static void
@@ -93,7 +96,7 @@ notification_new_from_dbus_message(GDBusMessage *message)
   self->priv->timestamp = g_date_time_new_now_local();
 
   GVariant *body = g_dbus_message_get_body(message);
-  GVariant *child = NULL;
+  GVariant *child = NULL, *value = NULL;
   g_assert(g_variant_is_of_type(body, G_VARIANT_TYPE_TUPLE));
   g_assert(g_variant_n_children(body) == COLUMN_COUNT);
 
@@ -126,6 +129,18 @@ notification_new_from_dbus_message(GDBusMessage *message)
   self->priv->body = g_variant_dup_string(child,
       &(self->priv->body_length));
 
+  /* hints */
+  child = g_variant_get_child_value(body, COLUMN_HINTS);
+  g_assert(g_variant_is_of_type(child, G_VARIANT_TYPE_DICTIONARY));
+
+  /* check for volume hint */
+  value = g_variant_lookup_value(child, X_CANONICAL_PRIVATE_SYNCHRONOUS, G_VARIANT_TYPE_STRING);
+  if(value != NULL) {
+    if(g_strcmp0(g_variant_get_string(value, NULL), "volume") == 0) {
+      self->priv->is_volume = TRUE;
+    }
+  }
+
   child = NULL;
 
   return self;
@@ -167,6 +182,12 @@ notification_timestamp_for_locale(Notification *self)
   return g_date_time_format(self->priv->timestamp, "%X %x");
 }
 
+gboolean
+notification_is_volume(Notification *self)
+{
+  return self->priv->is_volume;
+}
+
 void
 notification_print(Notification *self)
 {
diff --git a/src/notification.h b/src/notification.h
index d9a67fe..5fc944a 100644
--- a/src/notification.h
+++ b/src/notification.h
@@ -45,6 +45,8 @@ struct _NotificationPrivate {
   gsize      body_length;
   gint       expire_timeout;
   GDateTime *timestamp;
+
+  gboolean   is_volume;
 };
 
 #define NOTIFICATION_GET_PRIVATE(o) \
@@ -59,6 +61,7 @@ const gchar  *notification_get_summary(Notification *);
 const gchar  *notification_get_body(Notification *);
 gint64        notification_get_timestamp(Notification *);
 gchar        *notification_timestamp_for_locale(Notification *);
+gboolean      notification_is_volume(Notification *);
 void          notification_print(Notification *);
 
 G_END_DECLS
diff --git a/src/notifications-service.c b/src/notifications-service.c
index 38fa247..71b7c40 100644
--- a/src/notifications-service.c
+++ b/src/notifications-service.c
@@ -217,6 +217,9 @@ log_to_file(const gchar *domain, GLogLevelFlags level, const gchar *message, gpo
 static void
 message_received_cb(DBusSpy *spy, Notification *note, gpointer user_data)
 {
+  /* Discard volume notifications */
+  if(notification_is_volume(note)) return;
+
   g_object_ref(note);
   g_idle_add(add_notification_item, note);
 }