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Max gerrit-no-reply at lists.osmocom.orgReview at https://gerrit.osmocom.org/196 Fix RTP timestamps in case of DTX Compute RTP user_ts adjustment based on the difference between current and previous FN instead of hard-coded value. Change-Id: If1677ddcf754b29990ff7cd846e11c32e3d30b33 Related: OS#1562 --- M src/common/l1sap.c 1 file changed, 9 insertions(+), 2 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/96/196/1 diff --git a/src/common/l1sap.c b/src/common/l1sap.c index ac398d3..e060473 100644 --- a/src/common/l1sap.c +++ b/src/common/l1sap.c @@ -69,6 +69,13 @@ static int l1sap_down(struct gsm_bts_trx *trx, struct osmo_phsap_prim *l1sap); +static uint32_t fn_ms_adj(uint32_t fn, uint32_t last_fn, uint32_t base) +{ + if (last_fn) /* 8 samples, 120 ms, 26 bursts */ + return (fn - last_fn) * 8 * 120 / 26; + return base; +} + static const uint8_t fill_frame[GSM_MACBLOCK_LEN] = { 0x03, 0x03, 0x01, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, @@ -853,7 +860,7 @@ /* hand msg to RTP code for transmission */ if (lchan->abis_ip.rtp_socket) osmo_rtp_send_frame(lchan->abis_ip.rtp_socket, - msg->data, msg->len, 160); + msg->data, msg->len, fn_ms_adj(fn, lchan->tch.last_fn, GSM_RTP_DURATION)); /* if loopback is enabled, also queue received RTP data */ if (lchan->loopback) { @@ -871,7 +878,7 @@ msgb_enqueue(&lchan->dl_tch_queue, msg); } - + lchan->tch.last_fn = fn; return 0; } -- To view, visit https://gerrit.osmocom.org/196 To unsubscribe, visit https://gerrit.osmocom.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: If1677ddcf754b29990ff7cd846e11c32e3d30b33 Gerrit-PatchSet: 1 Gerrit-Project: osmo-bts Gerrit-Branch: master Gerrit-Owner: Max <msuraev at sysmocom.de>