diff options
author | Jacob Erlbeck <jerlbeck@sysmocom.de> | 2013-12-19 17:50:27 +0100 |
---|---|---|
committer | Holger Hans Peter Freyther <holger@moiji-mobile.com> | 2014-01-16 13:20:47 +0100 |
commit | 785e3c95d76d58e1a6a9559e197db5679edea721 (patch) | |
tree | 480cd4f6c07acd4ebe51fb4aad2e943c4b9404c5 /openbsc/src/libmgcp/mgcp_network.c | |
parent | 2645c9e7fc0698434f0555bbc8653252d56496ad (diff) |
mgcp/rtp: Make offset computation understandable
Rename the timestamp variable to make in clear, that the input
timestamp is meant. Add a helper variable to illustrate the offset
computation.
Sponsored-by: On-Waves ehf
Diffstat (limited to 'openbsc/src/libmgcp/mgcp_network.c')
-rw-r--r-- | openbsc/src/libmgcp/mgcp_network.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/openbsc/src/libmgcp/mgcp_network.c b/openbsc/src/libmgcp/mgcp_network.c index 21d52b58e..04e6cbef8 100644 --- a/openbsc/src/libmgcp/mgcp_network.c +++ b/openbsc/src/libmgcp/mgcp_network.c @@ -241,10 +241,11 @@ static int adjust_rtp_timestamp_offset(struct mgcp_endpoint *endp, struct mgcp_rtp_state *state, struct mgcp_rtp_end *rtp_end, struct sockaddr_in *addr, - int16_t delta_seq, uint32_t timestamp) + int16_t delta_seq, uint32_t in_timestamp) { int32_t tsdelta = state->packet_duration; int timestamp_offset; + uint32_t out_timestamp; if (tsdelta == 0) { tsdelta = state->out_stream.last_tsdelta; @@ -269,9 +270,8 @@ static int adjust_rtp_timestamp_offset(struct mgcp_endpoint *endp, } } - timestamp_offset = - state->out_stream.last_timestamp - timestamp + - delta_seq * tsdelta; + out_timestamp = state->out_stream.last_timestamp + delta_seq * tsdelta; + timestamp_offset = out_timestamp - in_timestamp; if (state->timestamp_offset != timestamp_offset) { state->timestamp_offset = timestamp_offset; |