gst/rtpmanager/: Also keep track of the first buffer timestamp together with the first

Original commit message from CVS:
* gst/rtpmanager/gstrtpbin.c: (gst_rtp_bin_associate),
(gst_rtp_bin_sync_chain):
* gst/rtpmanager/rtpsession.c: (update_arrival_stats),
(rtp_session_process_sr), (rtp_session_on_timeout):
* gst/rtpmanager/rtpsource.c: (rtp_source_init),
(calculate_jitter):
* gst/rtpmanager/rtpsource.h:
* gst/rtpmanager/rtpstats.h:
Also keep track of the first buffer timestamp together with the first
RTP timestamp as they both are needed to construct the timing of
outgoing packets in the jitterbuffer and are therefore also needed to
manage lip-sync. This fixes lip-sync if the first RTP packets arrive
with a wildly different gap.

1 files changed, 3 insertions, 1 deletions

diff --git a/gst/rtpmanager/rtpstats.h b/gst/rtpmanager/rtpstats.h
index c0d3a512..f82c9585 100644
--- a/gst/rtpmanager/rtpstats.h
+++ b/gst/rtpmanager/rtpstats.h
@@ -56,7 +56,8 @@ typedef struct {
 
 /**
  * RTPArrivalStats:
- * @time: arrival time of a packet
+ * @time: arrival time of a packet according to the system clock
+ * @timestamp: arrival time of a packet as buffer timestamp
  * @address: address of the sender of the packet
  * @bytes: bytes of the packet including lowlevel overhead
  * @payload_len: bytes of the RTP payload
@@ -65,6 +66,7 @@ typedef struct {
  */
 typedef struct {
   GstClockTime  time;
+  GstClockTime  timestamp;
   guint64       ntpnstime;
   gboolean      have_address;
   GstNetAddress address;