add api comment in sdp_msg.h
Related: SYS#5066
Change-Id: Ifce7d3860411a46b614eff2e9d9ed922cb8d8123
diff --git a/include/osmocom/msc/sdp_msg.h b/include/osmocom/msc/sdp_msg.h
index 98d1892..cf1e560 100644
--- a/include/osmocom/msc/sdp_msg.h
+++ b/include/osmocom/msc/sdp_msg.h
@@ -10,6 +10,7 @@
int sdp_subtype_name_to_payload_type(const char *subtype_name);
struct sdp_audio_codec {
+ /* Payload type number, like 3 for GSM-FR. */
unsigned int payload_type;
/* Like "GSM", "AMR", "EFR", ... */
char subtype_name[16];