sdp: a utility function for decoding SDP direction

baresip · Mar 25, 2022 · 8caba18 · 8caba18
1 parent a8f0ef6
commit 8caba18
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diff --git a/include/re_sdp.h b/include/re_sdp.h
@@ -175,6 +175,8 @@ extern const char sdp_proto_rtpsavp[];
 
 /* utility functions */
 
+enum sdp_dir sdp_dir_decode(const struct pl *pl);
+
 /** RTP Header Extensions, as defined in RFC 5285 */
 struct sdp_extmap {
 	struct pl name;

diff --git a/src/sdp/util.c b/src/sdp/util.c
@@ -11,6 +11,31 @@
 #include <re_sdp.h>
 
 
+/**
+ * Decode an SDP direction
+ *
+ * @param pl  SDP direction as string
+ *
+ * @return sdp_dir SDP direction, SDP_SENDRECV as fallback
+ */
+enum sdp_dir sdp_dir_decode(const struct pl *pl)
+{
+       if (!pl_strcmp(pl, "off")) {
+               return SDP_INACTIVE;
+       }
+       else if (!pl_strcmp(pl, "inactive")) {
+               return SDP_INACTIVE;
+       }
+       else if (!pl_strcmp(pl, "sendonly")) {
+               return  SDP_SENDONLY;
+       }
+       else if (!pl_strcmp(pl, "recvonly")) {
+               return SDP_RECVONLY;
+       }
+
+       return SDP_SENDRECV;
+}
+
 /**
  * Decode RTP Header Extension SDP attribute value
  *