diff --git a/src/Player/PlayerBase.h b/src/Player/PlayerBase.h
index 43324b71..466558b2 100644
--- a/src/Player/PlayerBase.h
+++ b/src/Player/PlayerBase.h
@@ -49,6 +49,15 @@ public:
 	virtual float getDuration() const { return 0;}
 	virtual bool isInited() const { return true; }
 	virtual vector<Track::Ptr> getTracks() const { return vector<Track::Ptr>();}
+	virtual Track::Ptr getTrack(TrackType type) const {
+		auto tracks = getTracks();
+		for(auto &track : tracks){
+			if(track->getTrackType() == type){
+				return track;
+			}
+		}
+		return nullptr;
+	}
 };
 
 
@@ -85,9 +94,9 @@ public:
 
     virtual float getProgress() const { return 0;}
     virtual void seekTo(float fProgress) {}
+
     virtual void setMediaSouce(const MediaSource::Ptr & src) {}
-	//TrackVideo = 0, TrackAudio = 1
-	virtual float getRtpLossRate(int trackType) const {return 0; }
+	virtual float getRtpLossRate(TrackType trackType) const {return 0; }
 protected:
     virtual void onShutdown(const SockException &ex) {}
     virtual void onPlayResult(const SockException &ex) {}
diff --git a/src/Rtsp/RtspPlayer.cpp b/src/Rtsp/RtspPlayer.cpp
index 86673030..64220b59 100644
--- a/src/Rtsp/RtspPlayer.cpp
+++ b/src/Rtsp/RtspPlayer.cpp
@@ -684,8 +684,8 @@ void RtspPlayer::onRecvRTP_l(const RtpPacket::Ptr &rtppt, int trackidx){
     
 	onRecvRTP_l(rtppt,_aTrackInfo[trackidx]);
 }
-float RtspPlayer::getRtpLossRate(int iTrackType) const{
-	int iTrackIdx = getTrackIndexByTrackType((TrackType)iTrackType);
+float RtspPlayer::getRtpLossRate(TrackType type) const{
+	int iTrackIdx = getTrackIndexByTrackType(type);
 	if(iTrackIdx == -1){
 		uint64_t totalRecv = 0;
 		uint64_t totalSend = 0;
diff --git a/src/Rtsp/RtspPlayer.h b/src/Rtsp/RtspPlayer.h
index f05b0908..3abb7041 100644
--- a/src/Rtsp/RtspPlayer.h
+++ b/src/Rtsp/RtspPlayer.h
@@ -55,7 +55,7 @@ public:
 	void play(const char* strUrl) override;
 	void pause(bool bPause) override;
 	void teardown() override;
-	float getRtpLossRate(int iTrackType) const override;
+	float getRtpLossRate(TrackType type) const override;
 protected:
 	//派生类回调函数
 	virtual bool onCheckSDP(const string &strSdp, const SdpAttr &sdpAttr) = 0;