修复开启转协议后，无人观看掐流延时不定期的bug

src/Common/MediaSource.h

@@ -53,9 +53,9 @@ public:
     virtual bool setupRecord(MediaSource &sender, Recorder::type type, bool start, const string &custom_path) { return false; };
     // 获取录制状态
     virtual bool isRecording(MediaSource &sender, Recorder::type type) { return false; };
-private:
     // 通知无人观看
-    void onNoneReader(MediaSource &sender);
+    virtual void onNoneReader(MediaSource &sender);
+
 private:
     Timer::Ptr _async_close_timer;
 };

src/Common/MultiMediaSourceMuxer.cpp

@@ -278,6 +278,15 @@ int MultiMediaSourceMuxer::totalReaderCount(MediaSource &sender) {
     return listener->totalReaderCount(sender);
 }
 
+void MultiMediaSourceMuxer::onNoneReader(MediaSource &sender){
+    auto listener = _listener.lock();
+    if (!listener) {
+        MediaSourceEvent::onNoneReader(sender);
+        return;
+    }
+    listener->onNoneReader(sender);
+}
+
 bool MultiMediaSourceMuxer::setupRecord(MediaSource &sender, Recorder::type type, bool start, const string &custom_path) {
     return _muxer->setupRecord(sender,type,start,custom_path);
 }

src/Common/MultiMediaSourceMuxer.h

@@ -131,6 +131,12 @@ public:
      */
     int totalReaderCount(MediaSource &sender) override;
 
+    /**
+     * 触发无人观看事件
+     * @param sender 触发者
+     */
+    void onNoneReader(MediaSource &sender) override;
+
     /**
      * 设置录制状态
      * @param type 录制类型