完成Track对象与SDP对象的转换

src/Rtsp/RtspEncoder.cpp

@@ -0,0 +1,38 @@
+//
+// Created by xzl on 2018/10/23.
+//
+#include "RtspEncoder.h"
+
+namespace ZL{
+namespace Rtsp{
+
+
+Sdp::Ptr Sdp::getSdpByTrack(const Track::Ptr &track) {
+    switch (track->getCodecId()){
+        case CodecH264:{
+            H264Track::Ptr h264Track = dynamic_pointer_cast<H264Track>(track);
+            if(!h264Track){
+                return nullptr;
+            }
+            return std::make_shared<H264Sdp>(h264Track->getSps(),h264Track->getPps());
+        }
+
+        case CodecAAC:{
+            AACTrack::Ptr aacTrack = dynamic_pointer_cast<AACTrack>(track);
+            if(!aacTrack){
+                return nullptr;
+            }
+            return std::make_shared<AACSdp>(aacTrack->getAacCfg(),aacTrack->getAudioSampleRate());
+        }
+
+        default:
+            return nullptr;
+    }
+}
+
+
+
+
+}
+}
+

src/Rtsp/RtspEncoder.h

@@ -8,6 +8,7 @@
 #include "RTP/H264RtpCodec.h"
 #include "RTP/AACRtpCodec.h"
 #include "Util/base64.h"
+#include "Player/Track.h"
 
 namespace ZL{
 namespace Rtsp{
@@ -28,6 +29,14 @@ public:
         _sample_rate = sample_rate;
         _playload_type = playload_type;
     }
+
+    /**
+     * 根据Track生成SDP对象
+     * @param track 媒体信息
+     * @return 返回sdp对象
+     */
+    static Ptr getSdpByTrack(const Track::Ptr &track);
+
     virtual ~Sdp(){}
 
     /**