Added support for forwarding groups in AudioBridge (#2653)

conf/janus.plugin.audiobridge.jcfg.sample

@@ -16,6 +16,7 @@
 # record_dir = "/path/to/" (path to save the recording to, makes record_file a relative path if provided)
 # allow_rtp_participants = true|false (whether participants should be allowed to join
 #		via plain RTP as well, rather than just WebRTC, default=false)
+# groups = optional, non-hierarchical, array of groups to tag participants, for external forwarding purposes only
 #
 #     The following lines are only needed if you want the mixed audio
 #     to be automatically forwarded via plain RTP to an external component
@@ -28,6 +29,7 @@
 # rtp_forward_ssrc = SSRC to use to use when streaming (optional: stream_id used if missing)
 # rtp_forward_codec = opus (default), pcma (A-Law) or pcmu (mu-Law)
 # rtp_forward_ptype = payload type to use when streaming (optional: only read for Opus, 100 used if missing)
+# rtp_forward_group = group of participants to forward, if enabled in the room (optional: forwards full mix if missing)
 # rtp_forward_srtp_suite = length of authentication tag (32 or 80)
 # rtp_forward_srtp_crypto = "<key to use as crypto (base64 encoded key as in SDES)>"
 # rtp_forward_always_on = true|false, whether silence should be forwarded when the room is empty (optional: false used if missing)

html/audiobridgetest.js

@@ -60,6 +60,9 @@ if(getQueryStringValue("room") !== "")
 var stereo = false;
 if(getQueryStringValue("stereo") !== "")
 	stereo = (getQueryStringValue("stereo") === "true");
+var mygroup = null;	// Forwarding group, if required by the room
+if(getQueryStringValue("group") !== "")
+	mygroup = getQueryStringValue("group");
 var myusername = null;
 var myid = null;
 var webrtcUp = false;
@@ -426,7 +429,11 @@ function registerUsername() {
 		}
 		var register = { request: "join", room: myroom, display: username };
 		myusername = username;
-		mixertest.send({ message: register});
+		// If the room uses forwarding groups, this is how we state ours
+		if(mygroup)
+			register["group"] = mygroup;
+		// Send the message
+		mixertest.send({ message: register });
 	}
 }