bin: Always forward clock-lost message if we're not a top-level bin

This makes sure that no bin misses the clock-lost messages, independent
of the state, and could return an old, non-working clock from
gst_bin_provide_clock_func().

https://bugzilla.gnome.org/show_bug.cgi?id=701997

diff --git a/gst/gstbin.c b/gst/gstbin.c
index f70194f..cc4de10 100644 (file)
--- a/gst/gstbin.c
+++ b/gst/gstbin.c
@@ -3440,7 +3440,7 @@ gst_bin_handle_message_func (GstBin * bin, GstMessage * message)
     {
       GstClock **provided_clock_p;
       GstElement **clock_provider_p;
-      gboolean playing, provided, forward;
+      gboolean playing, toplevel, provided, forward;
       GstClock *clock;
 
       gst_message_parse_clock_lost (message, &clock);
@@ -3448,10 +3448,14 @@ gst_bin_handle_message_func (GstBin * bin, GstMessage * message)
       GST_OBJECT_LOCK (bin);
       bin->clock_dirty = TRUE;
       /* if we lost the clock that we provided, post to parent but
-       * only if we are PLAYING. */
+       * only if we are not a top-level bin or PLAYING.
+       * The reason for this is that applications should be able
+       * to PAUSE/PLAY if they receive this message without worrying
+       * about the state of the pipeline. */
       provided = (clock == bin->provided_clock);
       playing = (GST_STATE (bin) == GST_STATE_PLAYING);
-      forward = playing & provided;
+      toplevel = GST_OBJECT_PARENT (bin) == NULL;
+      forward = provided && (playing || !toplevel);
       if (provided) {
         GST_DEBUG_OBJECT (bin,
             "Lost clock %" GST_PTR_FORMAT " provided by %" GST_PTR_FORMAT,