Update the buffering state before stalling for more data

In some cases the wait for more data was happening without updating
the buffering state, meaning the API user would not be able to notice
it should pause the pipeline and update UI to indicate that is the
case, the video would likely stutter instead.

https://bugzilla.gnome.org/show_bug.cgi?id=707648

diff --git a/plugins/elements/gstqueue2.c b/plugins/elements/gstqueue2.c
index eb842a4..6bef04d 100644 (file)
--- a/plugins/elements/gstqueue2.c
+++ b/plugins/elements/gstqueue2.c
@@ -255,6 +255,7 @@ static gboolean gst_queue2_is_empty (GstQueue2 * queue);
 static gboolean gst_queue2_is_filled (GstQueue2 * queue);
 
 static void update_cur_level (GstQueue2 * queue, GstQueue2Range * range);
+static void update_in_rates (GstQueue2 * queue);
 
 typedef enum
 {
@@ -875,6 +876,10 @@ update_buffering (GstQueue2 * queue)
   gint percent;
   gboolean post = FALSE;
 
+  /* Ensure the variables used to calculate buffering state are up-to-date. */
+  update_cur_level (queue, queue->current);
+  update_in_rates (queue);
+
   if (!get_buffering_percent (queue, NULL, &percent))
     return;
 
@@ -1285,6 +1290,10 @@ gst_queue2_create_read (GstQueue2 * queue, guint64 offset, guint length,
           update_cur_pos (queue, queue->current, rpos);
           GST_QUEUE2_SIGNAL_DEL (queue);
         }
+
+        if (queue->use_buffering)
+          update_buffering (queue);
+
         GST_DEBUG_OBJECT (queue, "waiting for add");
         GST_QUEUE2_WAIT_ADD_CHECK (queue, queue->srcresult, out_flushing);
         continue;