From: Sebastian Dröge <sebastian@centricular.com>
Date: Tue, 5 Jan 2016 12:21:58 +0000 (+0200)
Subject: clock: Don't try to slave unsynced clocks
X-Git-Tag: 1.10.4~536
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ab827eca2ea64fb15ab8add85c72128f77abb923;p=platform%2Fupstream%2Fgstreamer.git

clock: Don't try to slave unsynced clocks

They will return useless values from get_time().
---

diff --git a/gst/gstclock.c b/gst/gstclock.c
index 01dc360..d3eaf9d 100644
--- a/gst/gstclock.c
+++ b/gst/gstclock.c
@@ -1174,6 +1174,12 @@ gst_clock_slave_callback (GstClock * master, GstClockTime time,
   GstClockTime stime, mtime;
   gdouble r_squared;
 
+  if (!gst_clock_is_synced (clock)) {
+    GST_CAT_DEBUG_OBJECT (GST_CAT_CLOCK, clock,
+        "Slave clock is not synced yet");
+    return TRUE;
+  }
+
   stime = gst_clock_get_internal_time (clock);
   mtime = gst_clock_get_time (master);