MT#62735 fix heuristic learning mode

Change-Id: I2bfd09eefaf6a13f1c7435efa2e07c9ccecfa964
(cherry picked from commit 9068638a4d)

daemon/media_socket.c

@@ -2399,9 +2399,10 @@ static bool media_packet_address_check(struct packet_handler_ctx *phc)
 			&& phc->mp.stream->advertised_endpoint.port)
 	{
 		// check if we need to reset our learned endpoints
-		if (memcmp(&rtpe_now, &phc->mp.stream->ep_detect_signal, sizeof(rtpe_now))) {
+
+		if ((phc->mp.call->last_signal - phc->mp.stream->ep_detect_signal) != 0) {
 			memset(&phc->mp.stream->detected_endpoints, 0, sizeof(phc->mp.stream->detected_endpoints));
-			phc->mp.stream->ep_detect_signal = rtpe_now;
+			phc->mp.stream->ep_detect_signal = phc->mp.call->last_signal;
 		}
 
 		// possible endpoints that can be detected in order of preference:

include/call.h

@@ -447,7 +447,7 @@ struct packet_stream {
 	sink_handler_q		rtp_mirrors;	/* LOCK: call->master_lock, in_lock for streamhandler */
 	struct endpoint		endpoint;	/* LOCK: out_lock */
 	struct endpoint		detected_endpoints[4];		/* LOCK: out_lock */
-	struct timeval		ep_detect_signal;		/* LOCK: out_lock */
+	time_t			ep_detect_signal;		/* LOCK: out_lock */
 	struct endpoint		advertised_endpoint;		/* RO */
 	struct endpoint		learned_endpoint;		/* LOCK: out_lock */
 	struct crypto_context	crypto;				/* OUT direction, LOCK: out_lock */