TT#76711 allow update of media type

Change-Id: I3e860fe8683be2d7b0cd3cc70d4f7e4b39a0e147

daemon/call.c

@@ -1819,6 +1819,16 @@ static void __update_media_id(struct call_media *media, struct call_media *other
 static void __update_media_protocol(struct call_media *media, struct call_media *other_media,
 		struct stream_params *sp, struct sdp_ng_flags *flags)
 {
+	// is the media type still the same?
+	if (str_cmp_str(&other_media->type, &sp->type)) {
+		ilog(LOG_DEBUG, "Updating media type from '" STR_FORMAT "' to '" STR_FORMAT "'",
+				STR_FMT(&other_media->type), STR_FMT(&sp->type));
+		call_str_cpy(other_media->call, &other_media->type, &sp->type);
+		other_media->type_id = codec_get_type(&other_media->type);
+		call_str_cpy(media->call, &media->type, &sp->type);
+		media->type_id = other_media->type_id;
+	}
+
 	/* deduct protocol from stream parameters received */
 	if (other_media->protocol != sp->protocol) {
 		other_media->protocol = sp->protocol;

include/call.h

@@ -295,8 +295,8 @@ struct call_media {
 
 	unsigned int		index;		/* RO */
 	unsigned int		unique_id;	/* RO */
-	str			type;		/* RO */
-	enum media_type		type_id;	// RO
+	str			type;
+	enum media_type		type_id;
 	const struct transport_protocol *protocol;
 	sockfamily_t		*desired_family;
 	const struct logical_intf *logical_intf;

t/auto-daemon-tests.pl

@@ -3879,7 +3879,7 @@ o=- 1545997027 1 IN IP4 198.51.100.7
 s=tester
 c=IN IP4 198.51.100.7
 t=0 0
-m=audio 7304 udptl t38
+m=image 7304 udptl t38
 a=T38FaxVersion:0
 a=T38MaxBitRate:14400
 a=T38FaxRateManagement:transferredTCF
@@ -3893,7 +3893,7 @@ s=tester
 c=IN IP4 203.0.113.1
 t=0 0
 a=rtpengine:LOOPER
-m=audio PORT udptl t38
+m=image PORT udptl t38
 a=T38FaxVersion:0
 a=T38MaxBitRate:14400
 a=T38FaxRateManagement:transferredTCF
@@ -3912,7 +3912,7 @@ o=- 1545997027 1 IN IP4 198.51.100.5
 s=tester
 c=IN IP4 198.51.100.5
 t=0 0
-m=audio 7300 udptl t38
+m=image 7300 udptl t38
 a=T38FaxVersion:0
 a=T38MaxBitRate:14400
 a=T38FaxRateManagement:transferredTCF
@@ -3927,7 +3927,7 @@ s=tester
 c=IN IP4 203.0.113.1
 t=0 0
 a=rtpengine:LOOPER
-m=audio PORT udptl t38
+m=image PORT udptl t38
 a=T38FaxVersion:0
 a=T38MaxBitRate:14400
 a=T38FaxRateManagement:transferredTCF