diff options
Diffstat (limited to 'src/osmo-bts-sysmo/l1_if.c')
| -rw-r--r-- | src/osmo-bts-sysmo/l1_if.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/src/osmo-bts-sysmo/l1_if.c b/src/osmo-bts-sysmo/l1_if.c index 01f146c6..fcef1db7 100644 --- a/src/osmo-bts-sysmo/l1_if.c +++ b/src/osmo-bts-sysmo/l1_if.c @@ -35,6 +35,8 @@ #include <osmocom/gsm/gsm_utils.h> #include <osmocom/gsm/lapdm.h> +#include <osmocom/trau/osmo_ortp.h> + #include <osmo-bts/logging.h> #include <osmo-bts/bts.h> #include <osmo-bts/oml.h> @@ -215,7 +217,6 @@ get_lapdm_chan_by_hl2(struct gsm_bts_trx *trx, uint32_t hLayer2) return &lchan->lapdm_ch; } - static const uint8_t fill_frame[GSM_MACBLOCK_LEN] = { 0x01, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, @@ -258,10 +259,28 @@ static int handle_ph_readytosend_ind(struct femtol1_hdl *fl1, if (!lchan) break; + if (lchan->abis_ip.rtp_socket) { + osmo_rtp_socket_poll(lchan->abis_ip.rtp_socket); + /* FIXME: we _assume_ that we never miss TDMA + * frames and that we always get to this point + * for every to-be-transmitted voice frame. A + * better solution would be to compute + * rx_user_ts based on how many TDMA frames have + * elapsed since the last call */ + lchan->abis_ip.rtp_socket->rx_user_ts += GSM_RTP_DURATION; + } /* get a msgb from the dl_tx_queue */ resp_msg = msgb_dequeue(&lchan->dl_tch_queue); - if (!resp_msg) - break; + /* if there is none, try to generate empty TCH frame + * like AMR SID_BAD */ + if (!resp_msg) { + LOGP(DL1C, LOGL_NOTICE, "%s DL TCH Tx queue underrun\n", + gsm_lchan_name(lchan)); + resp_msg = gen_empty_tch_msg(lchan); + /* if there really is none, break here and send empty */ + if (!resp_msg) + break; + } /* fill header */ data_req_from_rts_ind(msgb_l1prim(resp_msg), rts_ind); |