c# 远程监控（4） 接收端 RTP包重组 分屏显示

我们在上一期使用RTP协议，并进行了配置，打包了视频数据，这一期我们就对发送的数据进行重组，并显示在接受端上。最后对其进行扩展，支持多客户端视频发送，并在接收端分屏显示。完成远程监控的模拟。

 

先来个效果图吧

 

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private bool NewRTPPacket(RTPPacket packet)         {             if (!Clients.ContainsKey(packet.SSRC))//如果接受端第一次接受到某源的数据，则加入到             {                 if (Clients.Count < 4)//如果发送端为4，则丢弃包                 {                     Clients.Add(packet.SSRC, new List<RTPPacket> {packet});                     ImagesBoxMapping[ImagesBoxMapping.First(pair => pair.Value == null).Key] = packet.SSRC;                 }             }             else             {                 Clients[packet.SSRC].Add(packet);             }               if (packet.Marker)//如果已经发送完毕             {                 //丢包检测                 var orderPackets = Clients[packet.SSRC].OrderBy(rtpPacket => rtpPacket.SequenceNumber);                 if (Clients[packet.SSRC].Count != (orderPackets.Last().SequenceNumber - orderPackets.First().SequenceNumber + 1))                 {                     Clients[packet.SSRC].Clear();//清空缓存区                     return true;                 }                   //1.包重组                 var count = Clients[packet.SSRC].Sum(rtpPacket => rtpPacket.DataSize);//数据总数                   var newData = new byte[count];                   long offSet = 0;                 foreach (var rtpPacket in Clients[packet.SSRC])                 {                     Array.Copy(rtpPacket.DataPointer, 0, newData, offSet, rtpPacket.DataSize);                     offSet += rtpPacket.DataSize;                 }                 Clients[packet.SSRC].Clear();//清空缓存区                   var ms = new MemoryStream(newData);                 try                 {                     var bmp = new Bitmap(Image.FromStream(ms));                     var img = new Image<Bgr, Byte>(bmp);                     ImagesBoxMapping.First(pair => pair.Value == packet.SSRC).Key.Image = img;                 }                 catch (Exception)                 {                   }                 finally                 {                     ms.Close();                 }             }             return true;         }

　　完整代码可以到百度云下载：包括发送端和接收端