add sdp_audio_codec_is_set
Change-Id: I078efe5b42367ad1089c53f11f7eb6f3a9dd9443
diff --git a/include/osmocom/msc/sdp_msg.h b/include/osmocom/msc/sdp_msg.h
index 9073e91..98d1892 100644
--- a/include/osmocom/msc/sdp_msg.h
+++ b/include/osmocom/msc/sdp_msg.h
@@ -36,6 +36,7 @@
const char *sdp_msg_line_end(const char *src);
+bool sdp_audio_codec_is_set(const struct sdp_audio_codec *a);
int sdp_audio_codec_cmp(const struct sdp_audio_codec *a, const struct sdp_audio_codec *b,
bool cmp_fmtp, bool cmp_payload_type);
int sdp_audio_codecs_cmp(const struct sdp_audio_codecs *a, const struct sdp_audio_codecs *b,
diff --git a/src/libmsc/sdp_msg.c b/src/libmsc/sdp_msg.c
index eda6ac9..e96235a 100644
--- a/src/libmsc/sdp_msg.c
+++ b/src/libmsc/sdp_msg.c
@@ -30,6 +30,11 @@
#include <osmocom/msc/debug.h>
#include <osmocom/msc/sdp_msg.h>
+bool sdp_audio_codec_is_set(const struct sdp_audio_codec *a)
+{
+ return a && a->subtype_name[0];
+}
+
/* Compare name, rate and fmtp, returning typical cmp result: 0 on match, and -1 / 1 on mismatch.
* If cmp_fmtp is false, do *not* compare the fmtp string; if true, compare fmtp 1:1 as strings.
* If cmp_payload_type is false, do *not* compare the payload_type number.