- A regular seek event sets the endoffset to -1 to indicate that the value should be ignored.

Original commit message from CVS:
- A regular seek event sets the endoffset to -1 to indicate
that the value should be ignored.
- A segment seek only takes start < stop

gst/gstevent.c

@@ -136,6 +136,7 @@ gst_event_new_seek (GstSeekType type, gint64 offset)
 
   GST_EVENT_SEEK_TYPE (event) = type;
   GST_EVENT_SEEK_OFFSET (event) = offset;
+  GST_EVENT_SEEK_ENDOFFSET (event) = -1;
 
   return event;
 }
@@ -247,6 +248,8 @@ gst_event_new_segment_seek (GstSeekType type, gint64 start, gint64 stop)
 {
   GstEvent *event;
 
+  g_return_val_if_fail (start < stop, NULL);
+
   event = gst_event_new (GST_EVENT_SEEK_SEGMENT);
 
   GST_EVENT_SEEK_TYPE (event) = type;