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mgcp/rtp: Make offset computation understandable

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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
This commit is contained in:
Jacob Erlbeck 2013-12-19 17:50:27 +01:00 committed by Holger Hans Peter Freyther
parent ecd157ac76
commit 9b7eb7b6af
1 changed files with 4 additions and 4 deletions
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8
openbsc/src/libmgcp/mgcp_network.c
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@ -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;