MediaPusher使用弱指针保存MediaSource

src/Pusher/MediaPusher.cpp

@@ -46,7 +46,7 @@ MediaPusher::MediaPusher(const string &schema,
 MediaPusher::~MediaPusher() {
 }
 void MediaPusher::publish(const string &strUrl) {
-    _parser = PusherBase::createPusher(_src,strUrl);
+    _parser = PusherBase::createPusher(_src.lock(),strUrl);
     _parser->setOnShutdown(_shutdownCB);
     _parser->setOnPublished(_publishCB);
     _parser->mINI::operator=(*this);

src/Pusher/MediaPusher.h

@@ -49,9 +49,8 @@ public:
     virtual ~MediaPusher();
     void publish(const string &strUrl) override;
     EventPoller::Ptr getPoller();
-
 private:
-    MediaSource::Ptr _src;
+    std::weak_ptr<MediaSource> _src;
 };
 
 } /* namespace mediakit */