rtmp支持更新config帧

src/Rtmp/RtmpMediaSource.h

@@ -131,7 +131,10 @@ public:
         if (pkt->isCfgFrame()) {
             lock_guard<recursive_mutex> lock(_mtx);
             _config_frame_map[pkt->type_id] = pkt;
-            return;
+            if (!_ring) {
+                //注册后收到config帧更新到各播放器
+                return;
+            }
         }
 
         if (!_ring) {