aggregator: Set initial position on first buffer

Set the initial position on the first buffer, otherwise the queue
will grow without limits before the output thread is started.

https://bugzilla.gnome.org/show_bug.cgi?id=781673

diff --git a/libs/gst/base/gstaggregator.c b/libs/gst/base/gstaggregator.c
index 14bef99..cd146fd 100644 (file)
--- a/libs/gst/base/gstaggregator.c
+++ b/libs/gst/base/gstaggregator.c
@@ -1026,6 +1026,9 @@ update_time_level (GstAggregatorPad * aggpad, gboolean head)
           GST_FORMAT_TIME, aggpad->priv->head_position);
     else
       aggpad->priv->head_time = GST_CLOCK_TIME_NONE;
+
+    if (!GST_CLOCK_TIME_IS_VALID (aggpad->priv->tail_time))
+      aggpad->priv->tail_time = aggpad->priv->head_time;
   } else {
     if (GST_CLOCK_TIME_IS_VALID (aggpad->priv->tail_position) &&
         aggpad->segment.format == GST_FORMAT_TIME)