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[codecs filter] apply BSS codecs from Assignment Complete

Codec List (BSS Supported) is received once in Complete Layer 3 and
again in Assignment Complete messages. Use the most recent one, i.e. the
one from Assignment Complete, when it occurs.

Related: SYS#5066
Change-Id: I5e66ecc7987fa926f39d8be8eaf5799b931ab20a
---
M src/libmsc/msc_a.c
1 file changed, 5 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-msc refs/changes/24/30124/1

diff --git a/src/libmsc/msc_a.c b/src/libmsc/msc_a.c
index 484617e..12ddae3 100644
--- a/src/libmsc/msc_a.c
+++ b/src/libmsc/msc_a.c
@@ -47,6 +47,7 @@
 #include <osmocom/msc/rtp_stream.h>
 #include <osmocom/msc/msc_ho.h>
 #include <osmocom/msc/codec_mapping.h>
+#include <osmocom/msc/codec_filter.h>
 
 #define MSC_A_USE_WAIT_CLEAR_COMPLETE "wait-Clear-Complete"
 
@@ -1353,6 +1354,10 @@
 
 	rtp_stream_commit(rtps_to_ran);
 
+	/* Remember the Codec List (BSS Supported) */
+	if (ac->assignment_complete.codec_list_bss_supported)
+		codec_filter_set_bss(&cc_trans->cc.codecs, ac->assignment_complete.codec_list_bss_supported);
+
 	/* Setup CN side endpoint CI:
 	 * Now that
 	 * - the first CI has been created and a definitive endpoint name is assigned to the call_leg's MGW

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