TT#121752 restore SSRC output per call in NG stats output

This restores backwards compatibility with existing code parsing the
output, e.g. Kamailio to report MOS stats.

Change-Id: Ibafb2a7a3cf118166ffe1cca9a62a06b63252944

daemon/call_interfaces.c

@@ -1689,7 +1689,7 @@ stats:
 }
 
 static void ng_stats_monologue(bencode_item_t *dict, const struct call_monologue *ml,
-		struct call_stats *totals)
+		struct call_stats *totals, bencode_item_t *ssrc)
 {
 	bencode_item_t *sub, *medias = NULL;
 	GList *l;
@@ -1723,7 +1723,7 @@ static void ng_stats_monologue(bencode_item_t *dict, const struct call_monologue
 		bencode_dictionary_add_str(sub1, "tag", &cs->monologue->tag);
 		bencode_dictionary_add_string(sub1, "type", cs->offer_answer ? "offer/answer" : "pub/sub");
 	}
-	ng_stats_ssrc(bencode_dictionary_add_dictionary(sub, "SSRC"), ml->ssrc_hash);
+	ng_stats_ssrc(ssrc, ml->ssrc_hash);
 
 	medias = bencode_dictionary_add_list(sub, "medias");
 
@@ -1766,6 +1766,8 @@ static void ng_stats_ssrc(bencode_item_t *dict, struct ssrc_hash *ht) {
 		struct ssrc_entry_call *se = l->data;
 		char *tmp = bencode_buffer_alloc(dict->buffer, 12);
 		snprintf(tmp, 12, "%" PRIu32, se->h.ssrc);
+		if (bencode_dictionary_get(dict, tmp))
+			continue;
 		bencode_item_t *ent = bencode_dictionary_add_dictionary(dict, tmp);
 
 		if (!se->stats_blocks.length || !se->lowest_mos || !se->highest_mos)
@@ -1826,6 +1828,7 @@ void ng_call_stats(struct call *call, const str *fromtag, const str *totag, benc
 	bencode_dictionary_add_integer(output, "created", call->created.tv_sec);
 	bencode_dictionary_add_integer(output, "created_us", call->created.tv_usec);
 	bencode_dictionary_add_integer(output, "last signal", call->last_signal);
+	bencode_item_t *ssrc = bencode_dictionary_add_dictionary(output, "SSRC");
 
 	tags = bencode_dictionary_add_dictionary(output, "tags");
 
@@ -1835,16 +1838,16 @@ stats:
 	if (!match_tag || !match_tag->len) {
 		for (l = call->monologues.head; l; l = l->next) {
 			ml = l->data;
-			ng_stats_monologue(tags, ml, totals);
+			ng_stats_monologue(tags, ml, totals, ssrc);
 		}
 	}
 	else {
 		ml = call_get_monologue(call, match_tag);
 		if (ml) {
-			ng_stats_monologue(tags, ml, totals);
+			ng_stats_monologue(tags, ml, totals, ssrc);
 			for (GList *l = ml->subscriptions.head; l; l = l->next) {
 				struct call_subscription *cs = l->data;
-				ng_stats_monologue(tags, cs->monologue, totals);
+				ng_stats_monologue(tags, cs->monologue, totals, ssrc);
 			}
 		}
 	}