tree f98ce03291a86ceb5e1d418569c8ed115a44b519
parent e2292f3aa1e9ae1faf5521a9cb108775f1ac0540
author Jacob Erlbeck <jerlbeck@sysmocom.de> 1385720406 +0100
committer Jacob Erlbeck <jerlbeck@sysmocom.de> 1386670664 +0100

mgcp/rtp: Fix RTP timestamps if enabled

This forces the output timing to fulfill
   dTS = dSegNo * fixedPacketDuration
where dSegNo = seqNo - lastSeqNo.

If timestamp patching is enabled, the output timestamp will be set
to lastTimestamp + dTS. This kind of relative updating is used to
handle seqNo- and timestamp-wraparounds properly.

The updating of timestamp and SSRC has been separated and the patch
field of mgcp_rtp_state has been renamed to patch_ssrc to reflect
it's semantics more closely. The offset fields are now used always
and will change the corresponding header field if they are != 0.

Ticket: OW#1065
Sponsored-by: On-Waves ehf