[M] Change in osmo-bts[master]: RTP: use new abstraction layer instead of direct osmo_ortp - gerrit-log

22 Feb 2026

falconia has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-bts/+/42166?usp=email )
Change subject: RTP: use new abstraction layer instead of direct osmo_ortp
......................................................................
RTP: use new abstraction layer instead of direct osmo_ortp
As of this patch in the series, the RTP library in active use
is still always ortp, but all BTS code now accesses it through
the new abstraction layer, paving the way for twrtp option.
Related: OS#6474
Change-Id: I5e3de4f84e8e8875437cb94a9b8feeb07f9cc1cf
---
M include/osmo-bts/l1sap.h
M include/osmo-bts/lchan.h
M src/common/l1sap.c
M src/common/lchan.c
M src/common/msg_utils.c
M src/common/rsl.c
M src/common/vty.c
7 files changed, 44 insertions(+), 61 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/66/42166/1

diff --git a/include/osmo-bts/l1sap.h b/include/osmo-bts/l1sap.h
index 34259bd..b90992a 100644
--- a/include/osmo-bts/l1sap.h
+++ b/include/osmo-bts/l1sap.h
@@ -93,7 +93,7 @@
    uint16_t arfcn, uint8_t block_nr, const uint8_t *data, uint8_t len);
/* call-back function for incoming RTP */
-void l1sap_rtp_rx_cb(struct osmo_rtp_socket *rs, const uint8_t *rtp_pl,
+void l1sap_rtp_rx_cb(struct rtp_abst_socket *rs, const uint8_t *rtp_pl,
    	     unsigned int rtp_pl_len, uint16_t seq_number,
    	     uint32_t timestamp, bool marker);
diff --git a/include/osmo-bts/lchan.h b/include/osmo-bts/lchan.h
index 2b19c28..071197d 100644
--- a/include/osmo-bts/lchan.h
+++ b/include/osmo-bts/lchan.h
@@ -190,7 +190,7 @@
    		/* Used to build rtp messages we send to osmux */
    		struct osmo_rtp_handle *rtpst;
    	} osmux;
-		struct osmo_rtp_socket *rtp_socket;
+		struct rtp_abst_socket *rtp_socket;
    } abis_ip;
char *name;
diff --git a/src/common/l1sap.c b/src/common/l1sap.c
index e77f602..f8c0017 100644
--- a/src/common/l1sap.c
+++ b/src/common/l1sap.c
@@ -41,8 +41,6 @@
#include <osmocom/codec/codec.h>
-#include <osmocom/trau/osmo_ortp.h>
-
 #include <osmo-bts/logging.h>
 #include <osmo-bts/gsm_data.h>
 #include <osmo-bts/l1sap.h>
@@ -56,6 +54,7 @@
 #include <osmo-bts/bts_model.h>
 #include <osmo-bts/handover.h>
 #include <osmo-bts/msg_utils.h>
+#include <osmo-bts/rtp_abstract.h>
 #include <osmo-bts/rtp_input_preen.h>
 #include <osmo-bts/pcuif_proto.h>
 #include <osmo-bts/cbch.h>
@@ -1532,10 +1531,8 @@
    OSMO_ASSERT(bits_per_20ms != 0);
for (i = 0; i < ARRAY_SIZE(input_msg); i++) {
-		if (!lchan->loopback && lchan->abis_ip.rtp_socket) {
-			osmo_rtp_socket_poll(lchan->abis_ip.rtp_socket);
-			lchan->abis_ip.rtp_socket->rx_user_ts += GSM_RTP_DURATION;
-		}
+		if (!lchan->loopback && lchan->abis_ip.rtp_socket)
+			rtp_abst_socket_poll(lchan->abis_ip.rtp_socket);
    	input_msg[i] = msgb_dequeue_count(&lchan->dl_tch_queue,
    					  &lchan->dl_tch_queue_len);
    }
@@ -1621,10 +1618,8 @@
    /* Input processing happens every 40 ms */
    if (csd_tchf48_nt_e2_map[fn % 26] == 0) {
    	for (i = 0; i < 2; i++) {
-			if (!lchan->loopback && lchan->abis_ip.rtp_socket) {
-				osmo_rtp_socket_poll(lchan->abis_ip.rtp_socket);
-				lchan->abis_ip.rtp_socket->rx_user_ts += GSM_RTP_DURATION;
-			}
+			if (!lchan->loopback && lchan->abis_ip.rtp_socket)
+				rtp_abst_socket_poll(lchan->abis_ip.rtp_socket);
    		input_msg = msgb_dequeue_count(&lchan->dl_tch_queue,
    					       &lchan->dl_tch_queue_len);
    		if (input_msg) {
@@ -1735,16 +1730,8 @@
        lchan->csd_mode == LCHAN_CSD_M_NT)
    	return tch_rts_ind_tchf48_nt(trx, lchan, rts_ind);
-	if (!lchan->loopback && 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;
-	}
+	if (!lchan->loopback && lchan->abis_ip.rtp_socket)
+		rtp_abst_socket_poll(lchan->abis_ip.rtp_socket);
    /* get a msgb from the dl_tx_queue */
    resp_msg = msgb_dequeue_count(&lchan->dl_tch_queue, &lchan->dl_tch_queue_len);
    if (!resp_msg) {
@@ -2101,8 +2088,9 @@
    	lchan_osmux_send_frame(lchan, rtp_pl, rtp_pl_len,
    			       fn_ms_adj(fn, lchan), lchan->rtp_tx_marker);
    } else if (lchan->abis_ip.rtp_socket != NULL) {
-		osmo_rtp_send_frame_ext(lchan->abis_ip.rtp_socket,
-			rtp_pl, rtp_pl_len, fn_ms_adj(fn, lchan), lchan->rtp_tx_marker);
+		fn_ms_adj(fn, lchan);	/* for diagnostics only */
+		rtp_abst_send_frame(lchan->abis_ip.rtp_socket,
+			rtp_pl, rtp_pl_len, lchan->rtp_tx_marker);
    	rate_ctr_inc2(bts->ctrs, BTS_CTR_RTP_TX_TOTAL);
    	if (lchan->rtp_tx_marker)
    		rate_ctr_inc2(bts->ctrs, BTS_CTR_RTP_TX_MARKER);
@@ -2120,10 +2108,8 @@
    struct gsm_bts *bts = lchan->ts->trx->bts;
if (lchan->abis_ip.rtp_socket != NULL) {
-		osmo_rtp_send_frame_ext(lchan->abis_ip.rtp_socket,
-					rtp_pl, rtp_pl_len,
-					GSM_RTP_DURATION,
-					lchan->rtp_tx_marker);
+		rtp_abst_send_frame(lchan->abis_ip.rtp_socket,
+			rtp_pl, rtp_pl_len, lchan->rtp_tx_marker);
    	rate_ctr_inc2(bts->ctrs, BTS_CTR_RTP_TX_TOTAL);
    	if (lchan->rtp_tx_marker)
    		rate_ctr_inc2(bts->ctrs, BTS_CTR_RTP_TX_MARKER);
@@ -2341,8 +2327,10 @@
    	 "Skipping RTP frame with lost payload\n");
    if (lchan->abis_ip.osmux.use)
    	lchan_osmux_skipped_frame(lchan, fn_ms_adj(fn, lchan));
-	else if (lchan->abis_ip.rtp_socket)
-		osmo_rtp_skipped_frame(lchan->abis_ip.rtp_socket, fn_ms_adj(fn, lchan));
+	else if (lchan->abis_ip.rtp_socket) {
+		fn_ms_adj(fn, lchan);	/* for diagnostics only */
+		rtp_abst_skipped_frame(lchan->abis_ip.rtp_socket);
+	}
    lchan->rtp_tx_marker = true;
 }
@@ -2881,7 +2869,7 @@
 }
/*! \brief call-back function for incoming RTP */
-void l1sap_rtp_rx_cb(struct osmo_rtp_socket *rs, const uint8_t *rtp_pl,
+void l1sap_rtp_rx_cb(struct rtp_abst_socket *rs, const uint8_t *rtp_pl,
                      unsigned int rtp_pl_len, uint16_t seq_number,
    	     uint32_t timestamp, bool marker)
 {
diff --git a/src/common/lchan.c b/src/common/lchan.c
index b115e1e..b5623e3 100644
--- a/src/common/lchan.c
+++ b/src/common/lchan.c
@@ -23,10 +23,9 @@
#include <osmocom/core/logging.h>
-#include <osmocom/trau/osmo_ortp.h>
-
 #include <osmo-bts/logging.h>
 #include <osmo-bts/lchan.h>
+#include <osmo-bts/rtp_abstract.h>
 #include <osmo-bts/bts.h>
 #include <osmo-bts/rsl.h>
 #include <osmo-bts/pcu_if.h>
@@ -216,8 +215,8 @@
if (lchan->abis_ip.rtp_socket) {
    	rsl_tx_ipac_dlcx_ind(lchan, RSL_ERR_NORMAL_UNSPEC);
-		osmo_rtp_socket_log_stats(lchan->abis_ip.rtp_socket, DRTP, LOGL_INFO,
-			"Closing RTP socket on Channel Release ");
+		rtp_abst_socket_log_stats(lchan->abis_ip.rtp_socket,
+					  "Channel Release");
    	lchan_rtp_socket_free(lchan);
    } else if (lchan->abis_ip.osmux.use) {
    	lchan_osmux_release(lchan);
@@ -537,7 +536,7 @@
    }
 }
-static int bind_rtp(struct gsm_bts *bts, struct osmo_rtp_socket *rs, const char *ip)
+static int bind_rtp(struct gsm_bts *bts, struct rtp_abst_socket *rs, const char *ip)
 {
    int rc;
    unsigned int i;
@@ -549,7 +548,7 @@
    	if (bts->rtp_port_range_next >= bts->rtp_port_range_end)
    		bts->rtp_port_range_next = bts->rtp_port_range_start;
-		rc = osmo_rtp_socket_bind(rs, ip, bts->rtp_port_range_next);
+		rc = rtp_abst_socket_bind(rs, ip, bts->rtp_port_range_next);
bts->rtp_port_range_next += 2;
@@ -557,12 +556,12 @@
    		continue;
if (bts->rtp_ip_dscp != -1) {
-			if (osmo_rtp_socket_set_dscp(rs, bts->rtp_ip_dscp))
+			if (rtp_abst_socket_set_dscp(rs, bts->rtp_ip_dscp))
    			LOGP(DRSL, LOGL_ERROR, "failed to set DSCP=%d: %s\n",
    				bts->rtp_ip_dscp, strerror(errno));
    	}
    	if (bts->rtp_priority != -1) {
-			if (osmo_rtp_socket_set_priority(rs, bts->rtp_priority))
+			if (rtp_abst_socket_set_priority(rs, bts->rtp_priority))
    			LOGP(DRSL, LOGL_ERROR, "failed to set socket priority %d: %s\n",
    				bts->rtp_priority, strerror(errno));
    	}
@@ -587,8 +586,8 @@
    /* FIXME: select default value depending on speech_mode */
    //if (!payload_type)
    lchan->tch.last_fn = LCHAN_FN_DUMMY;
-	lchan->abis_ip.rtp_socket = osmo_rtp_socket_create(lchan->ts->trx,
-							OSMO_RTP_F_POLL);
+	lchan->abis_ip.rtp_socket = rtp_abst_socket_create(lchan->ts->trx,
+					false, bts->twjit_cfg);
if (!lchan->abis_ip.rtp_socket) {
    	LOGPLCHAN(lchan, DRTP, LOGL_ERROR, "IPAC Failed to create RTP/RTCP sockets\n");
@@ -599,10 +598,8 @@
    	return -ENOTCONN;
    }
-	rc = osmo_rtp_socket_set_param(lchan->abis_ip.rtp_socket,
-				       bts->rtp_jitter_adaptive ?
-				       OSMO_RTP_P_JIT_ADAP :
-				       OSMO_RTP_P_JITBUF,
+	rc = rtp_abst_socket_set_param(lchan->abis_ip.rtp_socket,
+				       bts->rtp_jitter_adaptive,
    			       bts->rtp_jitter_buf_ms);
    if (rc < 0)
    	LOGPLCHAN(lchan, DRTP, LOGL_ERROR,
@@ -626,7 +623,7 @@
/* Ensure RTCP SDES contains some useful information */
    snprintf(cname, sizeof(cname), "bts@%s", bind_ip);
-	osmo_rtp_set_source_desc(lchan->abis_ip.rtp_socket, cname,
+	rtp_abst_set_source_desc(lchan->abis_ip.rtp_socket, cname,
    			 gsm_lchan_name(lchan), NULL, NULL,
    			 gsm_trx_unit_id(lchan->ts->trx),
    			 "OsmoBTS-" PACKAGE_VERSION, NULL);
@@ -640,8 +637,8 @@
    int bound_port = 0;
    int rc;
-	rc = osmo_rtp_socket_connect(lchan->abis_ip.rtp_socket,
-				     inet_ntoa(*ia), connect_port);
+	rc = rtp_abst_socket_connect(lchan->abis_ip.rtp_socket,
+				     ia, connect_port);
    if (rc < 0) {
    	LOGPLCHAN(lchan, DRTP, LOGL_ERROR, "Failed to connect RTP/RTCP sockets\n");
    	return -ECONNREFUSED;
@@ -650,7 +647,7 @@
    lchan->abis_ip.connect_ip = ntohl(ia->s_addr);
    lchan->abis_ip.connect_port = connect_port;
-	rc = osmo_rtp_get_bound_ip_port(lchan->abis_ip.rtp_socket,
+	rc = rtp_abst_get_bound_ip_port(lchan->abis_ip.rtp_socket,
    				&lchan->abis_ip.bound_ip,
    				&bound_port);
    if (rc < 0)
@@ -661,7 +658,7 @@
void lchan_rtp_socket_free(struct gsm_lchan *lchan)
 {
-	osmo_rtp_socket_free(lchan->abis_ip.rtp_socket);
+	rtp_abst_socket_free(lchan->abis_ip.rtp_socket);
    lchan->abis_ip.rtp_socket = NULL;
    msgb_queue_free(&lchan->dl_tch_queue);
    lchan->dl_tch_queue_len = 0;
diff --git a/src/common/msg_utils.c b/src/common/msg_utils.c
index 04a0c34..113371f 100644
--- a/src/common/msg_utils.c
+++ b/src/common/msg_utils.c
@@ -24,13 +24,13 @@
 #include <osmo-bts/amr.h>
 #include <osmo-bts/rsl.h>
 #include <osmo-bts/bts.h>
+#include <osmo-bts/rtp_abstract.h>
#include <osmocom/gsm/protocol/ipaccess.h>
 #include <osmocom/gsm/protocol/gsm_12_21.h>
 #include <osmocom/gsm/abis_nm.h>
 #include <osmocom/core/msgb.h>
 #include <osmocom/core/fsm.h>
-#include <osmocom/trau/osmo_ortp.h>
#include <arpa/inet.h>
 #include <errno.h>
diff --git a/src/common/rsl.c b/src/common/rsl.c
index 8d9dd56..88a5f17 100644
--- a/src/common/rsl.c
+++ b/src/common/rsl.c
@@ -39,7 +39,6 @@
 #include <osmocom/gsm/protocol/gsm_08_58.h>
 #include <osmocom/gsm/protocol/gsm_04_08.h>
 #include <osmocom/gsm/protocol/ipaccess.h>
-#include <osmocom/trau/osmo_ortp.h>
#include <osmo-bts/logging.h>
 #include <osmo-bts/gsm_data.h>
@@ -55,6 +54,7 @@
 #include <osmo-bts/cbch.h>
 #include <osmo-bts/l1sap.h>
 #include <osmo-bts/bts_model.h>
+#include <osmo-bts/rtp_abstract.h>
 #include <osmo-bts/pcuif_proto.h>
 #include <osmo-bts/notification.h>
 #include <osmo-bts/asci.h>
@@ -2756,7 +2756,7 @@
    msgb_tv_put(msg, RSL_IE_IPAC_CONN_STAT, sizeof(uint32_t) * 7);
if (lchan->abis_ip.rtp_socket) {
-		osmo_rtp_socket_stats(lchan->abis_ip.rtp_socket,
+		rtp_abst_socket_stats(lchan->abis_ip.rtp_socket,
    			      &packets_sent, &octets_sent,
    			      &packets_recv, &octets_recv,
    			      &packets_lost, &arrival_jitter);
@@ -3144,13 +3144,13 @@
    if (payload_type) {
    	lchan->abis_ip.rtp_payload = *payload_type;
    	if (lchan->abis_ip.rtp_socket)
-			osmo_rtp_socket_set_pt(lchan->abis_ip.rtp_socket,
+			rtp_abst_socket_set_pt(lchan->abis_ip.rtp_socket,
    					*payload_type);
    }
    if (payload_type2) {
    	lchan->abis_ip.rtp_payload2 = *payload_type2;
    	if (lchan->abis_ip.rtp_socket)
-			osmo_rtp_socket_set_pt(lchan->abis_ip.rtp_socket,
+			rtp_abst_socket_set_pt(lchan->abis_ip.rtp_socket,
    					*payload_type2);
    }
    if (speech_mode)
@@ -3184,8 +3184,7 @@
rc = rsl_tx_ipac_dlcx_ack(lchan, inc_conn_id);
    if (lchan->abis_ip.rtp_socket) {
-		osmo_rtp_socket_log_stats(lchan->abis_ip.rtp_socket, DRTP, LOGL_INFO,
-					  "Closing RTP socket on DLCX ");
+		rtp_abst_socket_log_stats(lchan->abis_ip.rtp_socket, "DLCX");
    	lchan_rtp_socket_free(lchan);
    }
    return rc;
diff --git a/src/common/vty.c b/src/common/vty.c
index 461e92f..0411060 100644
--- a/src/common/vty.c
+++ b/src/common/vty.c
@@ -42,7 +42,6 @@
 #include <osmocom/core/gsmtap.h>
 #include <osmocom/core/utils.h>
 #include <osmocom/core/sockaddr_str.h>
-#include <osmocom/trau/osmo_ortp.h>
 #include <osmocom/core/fsm.h>
 #include <osmocom/codec/codec.h>
@@ -62,6 +61,7 @@
 #include <osmo-bts/vty.h>
 #include <osmo-bts/l1sap.h>
 #include <osmo-bts/osmux.h>
+#include <osmo-bts/rtp_abstract.h>
#define VTY_STR	"Configure the VTY\n"
@@ -2562,9 +2562,8 @@
    		VTY_NEWLINE);
    	return CMD_WARNING;
    }
-	rc = osmo_rtp_socket_set_param(lchan->abis_ip.rtp_socket,
-				  lchan->ts->trx->bts->rtp_jitter_adaptive ?
-				  OSMO_RTP_P_JIT_ADAP : OSMO_RTP_P_JITBUF,
+	rc = rtp_abst_socket_set_param(lchan->abis_ip.rtp_socket,
+				  lchan->ts->trx->bts->rtp_jitter_adaptive,
    			  jitbuf_ms);
    if (rc < 0)
    	vty_out(vty, "%% error setting jitter parameters: %s%s",
-- 
To view, visit https://gerrit.osmocom.org/c/osmo-bts/+/42166?usp=email
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Gerrit-MessageType: newchange
Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Change-Id: I5e3de4f84e8e8875437cb94a9b8feeb07f9cc1cf
Gerrit-Change-Number: 42166
Gerrit-PatchSet: 1
Gerrit-Owner: falconia falcon@freecalypso.org



    