Fix text payloads order (red first, t140 after) and added fmtp parameter for red payload

coreapi/linphonecall.c

@@ -297,6 +297,8 @@ bool_t is_payload_type_number_available(const MSList *l, int number, const Paylo
 static void linphone_core_assign_payload_type_numbers(LinphoneCore *lc, MSList *codecs){
 	MSList *elem;
 	int dyn_number=lc->codecs_conf.dyn_pt;
+	int t140_payload_type_number = 0;
+	
 	for (elem=codecs; elem!=NULL; elem=elem->next){
 		PayloadType *pt=(PayloadType*)elem->data;
 		int number=payload_type_get_number(pt);
@@ -323,6 +325,18 @@ static void linphone_core_assign_payload_type_numbers(LinphoneCore *lc, MSList *
 				payload_type_set_enable(pt, FALSE);
 			}
 		}
+		if (strcmp(pt->mime_type, payload_type_t140_red.mime_type) == 0) {
+			if (number == -1) {
+				t140_payload_type_number = dyn_number;
+			} else {
+				t140_payload_type_number = number;
+			}
+			
+			if (t140_payload_type_number > 0) {
+				const char *red_fmtp = ms_strdup_printf("%i/%i/%i", t140_payload_type_number, t140_payload_type_number, t140_payload_type_number);
+				payload_type_set_recv_fmtp(pt, red_fmtp);
+			}
+		}
 	}
 }
 

coreapi/linphonecore.c

@@ -1609,8 +1609,10 @@ static void linphone_core_register_default_codecs(LinphoneCore *lc){
 	linphone_core_register_payload_type(lc,&payload_type_speex_nb,"vbr=on",TRUE);
 	linphone_core_register_payload_type(lc,&payload_type_pcmu8000,NULL,TRUE);
 	linphone_core_register_payload_type(lc,&payload_type_pcma8000,NULL,TRUE);
-	linphone_core_register_payload_type(lc,&payload_type_t140,NULL,TRUE);
-	linphone_core_register_payload_type(lc,&payload_type_t140_red,NULL,TRUE);
+	
+	/* Text codecs in order or preference (RED first (more robust), then T140) */
+	linphone_core_register_payload_type(lc, &payload_type_t140_red, NULL, TRUE);
+	linphone_core_register_payload_type(lc, &payload_type_t140, NULL, TRUE);
 
 	/*other audio codecs, not enabled by default, in order of preference*/
 	linphone_core_register_payload_type(lc,&payload_type_gsm,NULL,FALSE);