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authorNeels Hofmeyr <nhofmeyr@sysmocom.de>2022-01-13 21:38:35 +0100
committerNeels Hofmeyr <nhofmeyr@sysmocom.de>2022-08-07 02:12:14 +0200
commit87ca9593d951f5424d3dde5478455f89334d0778 (patch)
tree8ffc429204c5f0a45c43db871574868e8efc025e
parent58286a7ef01adcc6752a947983f3158deadc38ba (diff)
msc_a: store BSS codec list from Compl L3
-rw-r--r--include/osmocom/msc/msc_a.h3
-rw-r--r--src/libmsc/msc_a.c12
2 files changed, 15 insertions, 0 deletions
diff --git a/include/osmocom/msc/msc_a.h b/include/osmocom/msc/msc_a.h
index f94420a01..20f57e853 100644
--- a/include/osmocom/msc/msc_a.h
+++ b/include/osmocom/msc/msc_a.h
@@ -121,6 +121,9 @@ struct msc_a {
* \-------RTP--> (ISUP) <--RTP--> <--RTP-->
*/
struct {
+ /* Codec List (BSS Supported) as received during Complete Layer 3 Information */
+ struct gsm0808_speech_codec_list compl_l3_codec_list_bss_supported;
+
/* All of the RTP stream handling */
struct call_leg *call_leg;
struct mncc_call *mncc_forwarding_to_remote_ran;
diff --git a/src/libmsc/msc_a.c b/src/libmsc/msc_a.c
index f00fb116e..943e7524e 100644
--- a/src/libmsc/msc_a.c
+++ b/src/libmsc/msc_a.c
@@ -46,6 +46,7 @@
#include <osmocom/msc/call_leg.h>
#include <osmocom/msc/rtp_stream.h>
#include <osmocom/msc/msc_ho.h>
+#include <osmocom/msc/codec_sdp_cc_t9n.h>
#define MSC_A_USE_WAIT_CLEAR_COMPLETE "wait-Clear-Complete"
@@ -1430,6 +1431,17 @@ int msc_a_ran_dec_from_msc_i(struct msc_a *msc_a, struct msc_a_ran_dec_data *d)
.lai.plmn = msc_a_net(msc_a)->plmn,
};
gsm0808_cell_id_to_cgi(&msc_a->via_cell, msg->compl_l3.cell_id);
+ /* If a codec list was sent along in the RAN_MSG_COMPL_L3, remember it for any upcoming codec
+ * resolution. */
+ if (msg->compl_l3.codec_list_bss_supported) {
+ msc_a->cc.compl_l3_codec_list_bss_supported = *msg->compl_l3.codec_list_bss_supported;
+ if (log_check_level(msc_a->c.ran->log_subsys, LOGL_DEBUG)) {
+ struct sdp_audio_codecs ac = {};
+ sdp_audio_codecs_from_speech_codec_list(&ac, &msc_a->cc.compl_l3_codec_list_bss_supported);
+ LOG_MSC_A(msc_a, LOGL_DEBUG, "Complete Layer 3: Codec List (BSS Supported): %s\n",
+ sdp_audio_codecs_to_str(&ac));
+ }
+ }
rc = msc_a_up_l3(msc_a, msg->compl_l3.msg);
if (!rc) {
struct ran_conn *conn = msub_ran_conn(msc_a->c.msub);