精简代码，改善代码结构

src/Common/MediaSource.h

@@ -131,7 +131,7 @@ public:
     vector<Track::Ptr> getTracks(bool ready = true) const override;
 
     // 设置监听者
-    virtual void setListener(const std::weak_ptr<MediaSourceEvent> &listener);
+    void setListener(const std::weak_ptr<MediaSourceEvent> &listener);
     // 获取监听者
     const std::weak_ptr<MediaSourceEvent>& getListener() const;
 
@@ -152,9 +152,9 @@ public:
     // 该流无人观看
     void onNoneReader();
     // 开启或关闭录制
-    virtual bool setupRecord(Recorder::type type, bool start, const string &custom_path);
+    bool setupRecord(Recorder::type type, bool start, const string &custom_path);
     // 获取录制状态
-    virtual bool isRecording(Recorder::type type);
+    bool isRecording(Recorder::type type);
 
     // 同步查找流
     static Ptr find(const string &schema, const string &vhost, const string &app, const string &id);

src/Rtmp/RtmpMediaSourceImp.h

@@ -68,21 +68,9 @@ public:
             //需要解复用rtmp
             key_pos = _demuxer->inputRtmp(pkt);
         }
-
         RtmpMediaSource::onWrite(pkt, key_pos);
     }
 
-    /**
-     * 设置监听器
-     * @param listener
-     */
-    void setListener(const std::weak_ptr<MediaSourceEvent> &listener) override {
-        RtmpMediaSource::setListener(listener);
-        if(_muxer){
-            _muxer->setMediaListener(listener);
-        }
-    }
-
     /**
      * 获取观看总人数，包括(hls/rtsp/rtmp)
      */
@@ -90,33 +78,6 @@ public:
         return readerCount() + (_muxer ? _muxer->totalReaderCount() : 0);
     }
 
-    /**
-     * 设置录制状态
-     * @param type 录制类型
-     * @param start 开始或停止
-     * @param custom_path 开启录制时，指定自定义路径
-     * @return 是否设置成功
-     */
-    bool setupRecord(Recorder::type type, bool start, const string &custom_path) override{
-        if(_muxer){
-            return _muxer->setupRecord(*this,type, start, custom_path);
-        }
-        return RtmpMediaSource::setupRecord(type, start, custom_path);
-    }
-
-    /**
-     * 获取录制状态
-     * @param type 录制类型
-     * @return 录制状态
-     */
-    bool isRecording(Recorder::type type) override{
-        if(_muxer){
-            return _muxer->isRecording(*this,type);
-        }
-        return RtmpMediaSource::isRecording(type);
-    }
-
-
     /**
      * 设置协议转换
      * @param enableRtsp 是否转换成rtsp
@@ -128,6 +89,9 @@ public:
         _muxer = std::make_shared<MultiMediaSourceMuxer>(getVhost(), getApp(), getId(), _demuxer->getDuration(), enableRtsp, false, enableHls, enableMP4);
         _muxer->setMediaListener(getListener());
         _muxer->setTrackListener(static_pointer_cast<RtmpMediaSourceImp>(shared_from_this()));
+        //让_muxer对象拦截一部分事件(比如说录像相关事件)
+        setListener(_muxer);
+
         for(auto &track : _demuxer->getTracks(false)){
             _muxer->addTrack(track);
             track->addDelegate(_muxer);

src/Rtsp/RtspMediaSourceImp.h

@@ -59,17 +59,6 @@ public:
         RtspMediaSource::onWrite(rtp, key_pos);
     }
 
-    /**
-     * 设置监听器
-     * @param listener
-     */
-    void setListener(const std::weak_ptr<MediaSourceEvent> &listener) override {
-        RtspMediaSource::setListener(listener);
-        if(_muxer){
-            _muxer->setMediaListener(listener);
-        }
-    }
-
     /**
      * 获取观看总人数，包括(hls/rtsp/rtmp)
      */
@@ -77,33 +66,6 @@ public:
         return readerCount() + (_muxer ? _muxer->totalReaderCount() : 0);
     }
 
-    /**
-     * 设置录制状态
-     * @param type 录制类型
-     * @param start 开始或停止
-     * @param custom_path 开启录制时，指定自定义路径
-     * @return 是否设置成功
-     */
-    bool setupRecord(Recorder::type type, bool start, const string &custom_path) override{
-        if(_muxer){
-            return _muxer->setupRecord(*this,type, start, custom_path);
-        }
-        return RtspMediaSource::setupRecord(type, start, custom_path);
-    }
-
-    /**
-     * 获取录制状态
-     * @param type 录制类型
-     * @return 录制状态
-     */
-    bool isRecording(Recorder::type type) override{
-        if(_muxer){
-            return _muxer->isRecording(*this,type);
-        }
-        return RtspMediaSource::isRecording(type);
-    }
-
-
     /**
      * 设置协议转换
      * @param enableRtmp 是否转换成rtmp
@@ -115,6 +77,9 @@ public:
         _muxer = std::make_shared<MultiMediaSourceMuxer>(getVhost(), getApp(), getId(), _demuxer->getDuration(), false, enableRtmp, enableHls, enableMP4);
         _muxer->setMediaListener(getListener());
         _muxer->setTrackListener(static_pointer_cast<RtspMediaSourceImp>(shared_from_this()));
+        //让_muxer对象拦截一部分事件(比如说录像相关事件)
+        setListener(_muxer);
+
         for(auto &track : _demuxer->getTracks(false)){
             _muxer->addTrack(track);
             track->addDelegate(_muxer);