MT#55283 add distinctions to OTHER attrs

All OTHER attributes are printed verbatim as strings, but we still want
to be able to distinguish between different types of them. Introduce an
extra enum for that purpose.

Change-Id: I24351c26a45ffbbe1dec9299faa5d0ea65cada29

daemon/sdp.c

@@ -292,6 +292,7 @@ struct sdp_attribute {
 		int i;
 		struct attribute_t38faxudpecdepth t38faxudpecdepth;
 		struct attribute_t38faxratemanagement t38faxratemanagement;
+		enum sdp_attr_type other;
 	};
 };
 
@@ -1768,6 +1769,7 @@ static struct sdp_attr *sdp_attr_dup(const struct sdp_attribute *c) {
 
 	str_init_dup_str(&ac->strs.name, &c->strs.name);
 	str_init_dup_str(&ac->strs.value, &c->strs.value);
+	ac->type = c->other;
 
 	return ac;
 }

include/sdp.h

@@ -34,8 +34,13 @@ struct sdp_attribute_strs {
 	str key;	/* "rtpmap:8" */
 };
 
+enum sdp_attr_type {
+	SDP_ATTR_TYPE_UNKNOWN = 0,
+};
+
 struct sdp_attr {
 	struct sdp_attribute_strs strs;
+	enum sdp_attr_type type;
 };