Ticket #744: Jitter buffer does not discard duplicate frame if it is currently empty (thanks Mårten Wikström for the report)

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@2485 74dad513-b988-da41-8d7b-12977e46ad98

1 files changed, 7 insertions, 0 deletions

diff --git a/pjmedia/src/pjmedia/jbuf.c b/pjmedia/src/pjmedia/jbuf.c
index c9a47f29..2cbb1643 100644
--- a/pjmedia/src/pjmedia/jbuf.c
+++ b/pjmedia/src/pjmedia/jbuf.c
@@ -267,6 +267,13 @@ static pj_bool_t jb_framelist_put_at(jb_framelist_t *framelist,
 				    framelist->flist_max_count;
 	}
     } else {
+	// check if frame is not too late, but watch out for sequence restart.
+	if (index < framelist->flist_origin && 
+	    framelist->flist_origin - index < 0x7FFF) 
+	{
+	    return PJ_FALSE;
+	}
+
 	where = framelist->flist_tail;
 	framelist->flist_origin = index;
 	framelist->flist_tail = (framelist->flist_tail + 1) %