diff options
Diffstat (limited to 'openbsc/src/libmgcp/mgcp_network.c')
| -rw-r--r-- | openbsc/src/libmgcp/mgcp_network.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/openbsc/src/libmgcp/mgcp_network.c b/openbsc/src/libmgcp/mgcp_network.c index b55ac0450..39d58073d 100644 --- a/openbsc/src/libmgcp/mgcp_network.c +++ b/openbsc/src/libmgcp/mgcp_network.c @@ -95,22 +95,25 @@ enum { /** * This does not need to be a precision timestamp and * is allowed to wrap quite fast. The returned value is - * milli seconds now. + * 1/unit seconds. */ -uint32_t get_current_ts(void) +static uint32_t get_current_ts(unsigned unit) { struct timespec tp; uint64_t ret; + if (!unit) + return 0; + memset(&tp, 0, sizeof(tp)); if (clock_gettime(CLOCK_MONOTONIC, &tp) != 0) LOGP(DMGCP, LOGL_NOTICE, "Getting the clock failed.\n"); - /* convert it to useconds */ + /* convert it to 1/unit seconds */ ret = tp.tv_sec; - ret *= 1000; - ret += tp.tv_nsec / 1000 / 1000; + ret *= unit; + ret += (int64_t)tp.tv_nsec * unit / 1000 / 1000 / 1000; return ret; } @@ -370,7 +373,7 @@ void mgcp_patch_and_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *sta rtp_hdr = (struct rtp_hdr *) data; seq = ntohs(rtp_hdr->sequence); timestamp = ntohl(rtp_hdr->timestamp); - arrival_time = get_current_ts(); + arrival_time = get_current_ts(rtp_end->rate); ssrc = ntohl(rtp_hdr->ssrc); if (!state->initialized) { @@ -491,9 +494,10 @@ void mgcp_patch_and_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *sta } /* - * calculate the jitter between the two packages. The TS should be + * Calculate the jitter between the two packages. The TS should be * taken closer to the read function. This was taken from the - * Appendix A of RFC 3550. The local timestamp has a usec resolution. + * Appendix A of RFC 3550. Timestamp and arrival_time have a 1/rate + * resolution. */ transit = arrival_time - timestamp; d = transit - state->transit; |