ART-NET 网络DMX发送与接收实例.docx-资料库

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Art-NET DMX 协议说明大小 Bit 描述 - 名字 Art-NET Dmx packet definition 字段 1 ID[8] Int8 2 3 4 5 6 7 8 9 OpCode ProtVerHi ProtVerLo Sequence Int16 Int8 Int8 Int8 Physical Int8 SubUni Net LengthHi Int8 Int8 Int8 10 11 Length Int8 Data[Length] Int8 - - - - - - - - - - 8 个字符数组，最后一个字符是一个空的终止。 Value = ‘A’ ‘r’ ‘t’ ‘-‘ ‘N’ ‘e’ ‘t’ 0x00 OpOutput 先传输低字节 Art-Net 协议版本号高字节 Art-Net 协议版本号低字节，当前值为 14 序列号用来确保 ArtDmx 数据包以正确的顺序使用。当 Art-net 是通过一个介质诸如因特网，可能的 ArtDmx 数据包在接收时出现乱序。此字段递增取值范围 0x01 至 0xFF，以允许接收节点重新排序数据包。序列号设置为 0 来禁止这功能从 DMX512 数据输入的物理输入端口。此字段仅供参考。使用全集来数据路由。目的地数据包的 15 位端口地址的低字节目的地数据包的 15 位端口地址的高 7 位字节 DMX512 数据数组的长度。这个值范围需要是 2-512. 表示数据包编码的 DMX512 通道数目。注：产品转换 Art-Net 到 DMX512 可以选择总发送 512 个通道。高字节上述内容低字节 DMX512 的灯光数据的变长数组(18-529) （1）数据包总数：530 端口 6454 （2）0 到 17 是包头 ,byte[14] 是通道号（0-255）开头识别字符：Art-Net （0-8）byte （3）byte 从 18 到 529 是有效数据; 初始化代码： public Socket dmxSo; dmxSo = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); EndPoint ipep = new IPEndPoint(IPAddress.Any, port); dmxSo.Bind(ipep); EndPoint epip = new IPEndPoint(IPAddress.Any, 0); dmxSo.BeginReceiveFrom(asyncRevDmxBuf, SocketFlags.None, ref "udp");//开始新的异步接 asyncRevDmxBuf.Length, AsyncCallback(OnDmxRecvCallback), epip, new 0,

///

/// 异步接收主处理过程 ///

/// private void OnDmxRecvCallback(IAsyncResult iar) { EndPoint ep = new IPEndPoint(IPAddress.Any, 0); if (hjSocket != null) { int Datalen = 0; try { 异步接收 Datalen = dmxSo.EndReceiveFrom(iar, ref ep);//终结 } catch (Exception ex) { this.closeDmx(); return; } if (Datalen > 0) { try { IPEndPoint ipp = (IPEndPoint)ep; this.processBuf(asyncRevDmxBuf, ipp.Address.ToString(), ipp.Port.ToString());//将得到的数据包放到 getBuf中处理 EndPoint epip = new IPEndPoint(IPAddress.Any, 0); asyncRevDmxBuf.Length, SocketFlags.None, ref epip, new AsyncCallback(OnDmxRecvCallback), "udp");//开始新的异步接 dmxSo.BeginReceiveFrom(asyncRevDmxBuf, 0, } catch (Exception ex) { ex = ex; } } } }

void closeDmx() { } try { dmxUdp = false; if (dmxSo != null) { dmxSo.Close(); } } catch { } 发送 DMX 代码： /// 播放记录的Dmx数据 /// /// public bool StartDmxPlay(string fileName) { if (!File.Exists(clsGloba.AppPath + "\\Dmx\\" + fileName)) return false; if (mBolplayDmx) { StopDmxPlay(); } mBolplayDmx = true; rs = new BinaryReader(new FileStream(clsGloba.AppPath + "\\Dmx\\" + fileName, FileMode.Open), System.Text.ASCIIEncoding.Default); //_tDmxplay.Change(0,200); //if(rs.ReadToEnd == string.Empty) thrPlay = new Thread(new ThreadStart(proBufToDmx)); thrPlay.Priority = ThreadPriority.Normal; thrPlay.Start(); return true; } //播放线程 private void proBufToDmx() { try { byte biaozhun = rs.ReadByte(); byte[] buf = null; // 读取是什么协议0，1

//byte[] bufTime = null; int bLen = 0; switch (biaozhun) { case 0: bLen = 528; break; case 1: bLen = 530; break; } while (mBolplayDmx) { try { if (clsGloba.isHDL_ArtNet == true) { bufTime = rs.ReadBytes(2); #region bLen = 530; ticks = System.DateTime.Now; // int timers1 = rs.ReadByte(); int timers2 = rs.ReadByte(); int allTime = timers1 * 256 + timers2; //rs.ReadInt32(); buf = rs.ReadBytes(530); if (buf.Length == 0) break; while (true) { // 现在时间减去读取前时间相隔的毫秒数 oldspanTick == allTime) Application.DoEvents(); if (!mBolplayDmx) break; ts = System.DateTime.Now - ticks; oldspanTick = ts.Milliseconds; // // clsGloba.DMX_number = oldspanTick; if (oldspanTick > allTime || { for (int y = 0; y < clsGloba.dmxIP_list.Count; y++) {

clsGloba.myhjCls.SendDmxBufToRemote(buf, clsGloba.dmxIP_list[y].ToString(), port); } break; } } #endregion } else { #region bLen = 528; ticks = System.DateTime.Now; int timers = rs.ReadByte(); buf = rs.ReadBytes(bLen); if (buf.Length == 0) break; while (true) { Application.DoEvents(); if (!mBolplayDmx) break; ts = System.DateTime.Now - ticks; oldspanTick = ts.Milliseconds; if (oldspanTick > timers || oldspanTick { for (int y = 0; y < == timers) clsGloba.dmxIP_list.Count; y++) { clsGloba.myhjCls.SendDmxBufToRemote(buf, clsGloba.dmxIP_list[y].ToString(), port); } break; } } #endregion } /*采用休眠 ticks = System.DateTime.Now; byte[] buf=rs.ReadBytes(DmxDataLen-1); timers=rs.ReadByte(); if(buf.Length == 0) {break;}

clsGloba.myhjCls.SendBufToRemote(buf,ip,port); Thread.Sleep (timers); */ } catch { break; } } StopDmxPlay(); } catch { StopDmxPlay(); } } ///

/// 有目的地的发送数据给设备 ///

/// /// public void SendDmxBufToRemote(byte[] buf, string ip, string port) { if (dmxSo != null) { try { EndPoint ep = new IPEndPoint(IPAddress.Parse(ip), int.Parse(port)); SocketFlags.None, ep, new AsyncCallback(this.OnEndSendCallback), "Ok"); dmxSo.BeginSendTo(buf, 0, buf.Length, } catch (Exception ex) { ex = ex; } } else { } } this.SendBufToRemote(buf, ip, port);

接收 DMX 代码 //开始准备接收启动 ///

/// 开始录制Dmx数据 ///

public bool StartDmxRecord(string fileName, int chns, byte biaozhun) { dmxLastBuf = new byte[DmxDataLen]; dBiaozhun = biaozhun; DmxSavePath = clsGloba.AppPath + "\\Dmx\\" + fileName; try { //if(File.Exists(DmxSavePath)){File.Delete(DmxSavePath);} if (ws != null) ws.Close(); ws = new BinaryWriter(new FileStream(DmxSavePath, FileMode.OpenOrCreate, FileAccess.ReadWrite), System.Text.ASCIIEncoding.Default); ws.Write(biaozhun); } catch (Exception ex) { MessageBox.Show("File is the visit, please try again later!" + ex.Message); if (ws != null) { ws = null; };return false; } dmxChnNum = chns; // startTick = 00;//2010-06-25 DmxRecordCount = 0; AvDmxSpeed = 0; DmxRecordStart = true; return true; //dmxLastBuf=null; } //接收数据包的处理 void processBuf(byte[] buf, string ip, string port) { string mb5 = "Art-Net"; if (System.Text.ASCIIEncoding.Default.GetString(buf, 0, 7) == mb5) { clsGloba.CDmx.ArtNetBufFromDmx(buf); return; } }

/// 处理ARTDmx数据内容 /// /// public void ArtNetBufFromDmx(byte[] buf1) { if (!DmxRecordStart) return; if (dmxChnNum > 0 && buf1[14] != dmxChnNum) return; byte[] bufmm = null; ticks = System.DateTime.Now; int old1 = 0; int old2 = 0; if (DmxRecordCount == 0) { //现在时刻 oldspanTick = 0; //写入时间等于0 } else { ts = ticks - startTick; oldspanTick = ts.Milliseconds; // if (oldspanTick > 200) oldspanTick = 200; } old1 = oldspanTick / 256; old2 = oldspanTick % 256; startTick = ticks; ws.Write(Convert.ToByte(old1)); ws.Write(Convert.ToByte(old2)); ws.Write(buf1, 0, 530); DmxRecordCount++; }

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ART-NET 网络DMX发送与接收实例.docx

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