参考上一篇：

针对监控摄像机（海康、大华等）进行手动录像的功能设计

录像后需要自定义一个播放器来播放录像文件。

简单设计界面如下：

打开文件，可暂停，可停止，可以拖动进度条。

static int width = 1920, height = 1080;int videoWidth = 639, videoHeight = 479;int YUVWidth = 640, YUVHeight = 480;bool bPause = false;bool bPlayStop = false;ILog log= LogManager.GetLogger("ErrorLog");int fps = 15, fpsMain = 15, fpsBase = 15;int msPerFrameCamera = 66, msPerFrameCameraBase = 66, msPerFrameCameraMain = 66; //相机每一帧的时间，25帧即40毫秒publicfrmPlay(){InitializeComponent();#region 解码器相关初始化，一般在窗口load中进行初始化decAttr= newH264Dec.hiH264_DEC_ATTR_S();decAttr.uPictureFormat= 0;decAttr.uStreamInType= 0;decAttr.uPicWidthInMB= (uint)width;decAttr.uPicHeightInMB= (uint)height;decAttr.uBufNum= 8;decAttr.uWorkMode= 16;//创建、初始化解码器句柄_decHandle = H264Dec.Hi264DecCreate(refdecAttr);#endregionInitVars();frmPlay_Resize(null, null);this.Resize += new System.EventHandler(this.frmPlay_Resize);}long offsetPlay = 0;int iFramePlay = 0;Image<Bgr, Byte> imageYUV = new Image<Bgr, Byte>(640, 480);Image<Bgr, Byte> imgNowShow = new Image<Bgr, Byte>(640, 480);int iFontSize16 = 12, iFontSize20 = 15, iFontSize24 = 18;string fontname = "仿宋_GB2312";private delegate void SetPicVideo(Image<Bgr, Byte> val);//跨线程修改图片框privateThread SetPicVideoThread;FileStream fs= null;private delegate void SetProgressLabel(stringval);Thread SetLabelThread;string labelValue = string.Empty;string sTotalTime = "";int iFrameCnt = 0;Thread showThread;void SetPic(Emgu.CV.Image<Bgr, Byte>val){if (bPause || bPlayStop ||bAbortPlayThread){Graphics g=imgBox.CreateGraphics();g.Clear(Color.Black);imageVideoOverLay.Visible= true;}elseif(imageVideoOverLay.Visible){imageVideoOverLay.Visible= false;}if (val != null && !bAbortPlayThread){this.imgBox.Image =val;imgBox.Refresh();}}private voidsetPicVideo(){if (bPause || bPlayStop || bAbortPlayThread) return;if(imgBox.InvokeRequired){SetPicVideo d= newSetPicVideo(SetPic);object[] arg = new object[] { imgNowShow };this.Invoke(d, arg);}else{SetPic(imgNowShow);}}List<BufferPlay> BufferPlayList = new List<BufferPlay>();private voidDrawnShow(){iFramePlay= 0;while (!bAbortPlayThread){if (BufferPlayList.Count > 0){DateTime dtStart=DateTime.Now;realstaticinfo= BufferPlayList[0].info;GCHandle handle= GCHandle.Alloc(BufferPlayList[0].yuvs, GCHandleType.Pinned);using (Image<Bgr, Byte> yuv420p = new Image<Bgr, byte>(YUVWidth, (YUVHeight >> 1) * 3, YUVWidth, handle.AddrOfPinnedObject())){CvInvoke.CvtColor(yuv420p, imageYUV, Emgu.CV.CvEnum.ColorConversion.Yuv420P2Bgr);}if(handle.IsAllocated)handle.Free();if (imageYUV == null) continue;Bitmap bmp=imageYUV.Bitmap;if (bmp == null) continue;lock(bmp){if(bShowLine){DrawInVideo(bmp);}imageYUV.Bitmap=bmp;imgNowShow=imageYUV;SetPicVideoThread= new Thread(newThreadStart(setPicVideo));SetPicVideoThread.IsBackground= true;SetPicVideoThread.Start();}if (BufferPlayList.Count > 0) BufferPlayList.RemoveAt(0);iFramePlay++;if (iFramePlay % fps == 0){int seconds = (int)((double)iFramePlay /fps);int h = (int)Math.Floor((double)seconds / 3600);int m = (int)Math.Floor((double)(seconds - h * 3600) / 60);int s = (int)Math.Floor((double)(seconds - h * 3600 - m * 60));string sNowPlayTime = h.ToString().PadLeft(2, '0') + ":" + m.ToString().PadLeft(2, '0') + ":" + s.ToString().PadLeft(2, '0');labelValue= sNowPlayTime + "/" +sTotalTime;SetLabelThread= new Thread(newThreadStart(setLableValue));SetLabelThread.IsBackground= true;SetLabelThread.Start();}DateTime timeStop2=DateTime.Now;TimeSpan ts2= newTimeSpan();ts2= timeStop2 -dtStart;if (ts2.TotalMilliseconds <msPerFrameCamera){Thread.Sleep((int)(msPerFrameCamera -ts2.TotalMilliseconds));}}}}private void Play(objectofs){FileStream fsTmp= ofs asFileStream;try{offsetPlay= 0;DateTime timeStart=DateTime.Now;DateTime timeStop=DateTime.Now;while (!bAbortPlayThread && fsTmp.Length > offsetPlay + 4 + 378 + 174){try{if(bPause){Thread.Sleep(msPerFrameCamera);continue;}timeStart=DateTime.Now;byte[] intdata = new byte[4];fsTmp.Read(intdata,0, 4);offsetPlay= offsetPlay + 4;fsTmp.Seek(offsetPlay, SeekOrigin.Begin);int frameLen = (int)FVD.Common.Common.bytes2uintNoRe(intdata, 0, 4);byte[] buffer = new byte[frameLen];fsTmp.Read(buffer,0, frameLen);offsetPlay= offsetPlay +frameLen;fsTmp.Seek(offsetPlay, SeekOrigin.Begin);GCHandle hObject2=GCHandle.Alloc(buffer, GCHandleType.Pinned);IntPtr pStreamData=hObject2.AddrOfPinnedObject();if (fsTmp.Length > offsetPlay + 500){byte[] datas= new byte[500];  //获取叠加数据fsTmp.Read(datas, 0, 500);Getdatas(datas);}if (H264Dec.Hi264DecAU(_decHandle, pStreamData, (uint)frameLen, 0, ref _decodeFrame, 0) == 0){int yLength = (int)(_decodeFrame.uHeight *_decodeFrame.uYStride);int uLength = (int)(_decodeFrame.uHeight * _decodeFrame.uUVStride / 2);IntPtr y=_decodeFrame.pY;IntPtr v=_decodeFrame.pV;IntPtr u=_decodeFrame.pU;byte[] ys = new byte[yLength];Marshal.Copy(y, ys,0, yLength);byte[] vs = new byte[uLength];Marshal.Copy(v, vs,0, uLength);byte[] us = new byte[uLength];Marshal.Copy(u, us,0, uLength);byte[] yuvs = new byte[ys.Length + vs.Length +us.Length];ys.CopyTo(yuvs,0);vs.CopyTo(yuvs, ys.Length);us.CopyTo(yuvs, ys.Length+vs.Length);BufferPlay bp;bp.info=realstaticinfoTmp;bp.yuvs=yuvs;BufferPlayList.Add(bp);}if(hObject2.IsAllocated)hObject2.Free();pStreamData=IntPtr.Zero;if (BufferPlayList.Count > 0){Thread.Sleep((int)((BufferPlayList.Count - 1) *msPerFrameCamera));}}catch(System.Exception ex){log.ErrorFormat("播放出错：" +ex.Message);continue;}}}catch(System.Exception ex){log.ErrorFormat("播放出错：" +ex.Message);MessageBox.Show("播放出错：" +ex.Message);}while (BufferPlayList.Count > 0){Thread.Sleep(msPerFrameCamera);}if(bLoopPlay) //循环播放，重新初始化{if (bAbortPlayThread) return;bPlayStop= true;bAbortPlayThread= true;Thread.Sleep(500);bPlayStop= false;bAbortPlayThread= false;labelValue= "00:00:00/" +sTotalTime;SetLabelThread= new Thread(newThreadStart(setLableValue));SetLabelThread.IsBackground= true;SetLabelThread.Start();fsTmp.Seek(0, SeekOrigin.Begin);playThread= new Thread(newParameterizedThreadStart(Play));playThread.IsBackground= true;playThread.Start(fsTmp);showThread= new Thread(newThreadStart(DrawnShow));showThread.IsBackground= true;showThread.Start();}else{fsTmp.Close();fsTmp.Dispose();bPlayStop= true;labelValue= "00:00:00/00:00:00";SetLabelThread= new Thread(newThreadStart(setLableValue));SetLabelThread.IsBackground= true;SetLabelThread.Start();}}private void trackBar1_ValueChanged(objectsender, EventArgs e){if (!string.IsNullOrEmpty(sTotalTime) && fs != null && btnStop.Enabled == true && fs.CanRead && iFrameCnt > 0){bPause= true;Thread.Sleep(msPerFrameCamera);int iNowFrame = (int)((double)trackBar1.Value / trackBar1.Maximum * (double)iFrameCnt);if (iNowFrame <= 0){iNowFrame= 1;}BufferPlayList.Clear();fs.Seek(0, SeekOrigin.Begin);long offsetTmp = 0;int iFrame = 0;byte[] intdata = new byte[4];while (fs.Length > offsetTmp + 504){fs.Read(intdata,0, 4);int frameLen = (int)(intdata[0] | intdata[1] << 8 | intdata[2] << 16 | intdata[3] << 24);offsetTmp= offsetTmp + frameLen + 504; //504 = 4 + 500
fs.Seek(offsetTmp, SeekOrigin.Begin);iFrame++;if (iFrame ==iNowFrame){offsetPlay=offsetTmp;iFramePlay=iNowFrame;break;}}bPause= false;}}void SetStatuslabel(stringval){if (bPlayStop) //自动播放完成，跨线程修改状态
{btnStop.Enabled= false;btnPause.Enabled= false;this.Text = "视频播放";trackBar1.ValueChanged-= newSystem.EventHandler(trackBar1_ValueChanged);trackBar1.Value= 0;trackBar1.ValueChanged+= newSystem.EventHandler(trackBar1_ValueChanged);trackBar1.Enabled= false;iFramePlay= 0;imageVideoOverLay.Visible= true;bPlayStop= false;}if (bPause || bPlayStop || bAbortPlayThread) return;this.labelProgress.Text =val;if (iFrameCnt > 0 && iFramePlay > 0 && iFramePlay <=iFrameCnt){trackBar1.ValueChanged-= newSystem.EventHandler(trackBar1_ValueChanged);trackBar1.Value= (int)((double)iFramePlay / (double)iFrameCnt *trackBar1.Maximum);trackBar1.ValueChanged+= newSystem.EventHandler(trackBar1_ValueChanged);}}private voidsetLableValue(){if (bPause || bAbortPlayThread) return;if(labelProgress.InvokeRequired){SetProgressLabel d= newSetProgressLabel(SetStatuslabel);object[] arg = new object[] { labelValue };//要传入的参数值this.Invoke(d, arg);}else{SetStatuslabel(labelValue);}}private void btnOpen_Click(objectsender, EventArgs e){if(rbMainVideo.Checked){YUVWidth=width;YUVHeight=height;msPerFrameCamera=msPerFrameCameraMain;fps=fpsMain;}else{YUVWidth= videoWidth + 1;YUVHeight= videoHeight + 1;msPerFrameCamera=msPerFrameCameraBase;fps=fpsBase;}transX= YUVWidth / (videoWidth + 1);transY= YUVHeight / (videoHeight + 1);frmPlay_Resize(null, null);openFileDialog1.Filter= "Zenith视频文件(*.dat)|*.dat";openFileDialog1.FileName= "";openFileDialog1.Multiselect= false;openFileDialog1.InitialDirectory=Application.StartupPath;if (openFileDialog1.ShowDialog() ==DialogResult.OK){this.labelProgress.Text = "00:00:00/00:00:00";bAbortPlayThread= true;Thread.Sleep(200);if (playThread != null &&playThread.IsAlive){playThread.Abort();}string filename =openFileDialog1.FileName;fs= newFileStream(filename, FileMode.OpenOrCreate, FileAccess.Read);if (fs.Length <= 512){MessageBox.Show("请确认文件是否有效！" +filename);return;}if (!fs.CanRead || !fs.CanSeek){MessageBox.Show("文件不可读，请确认！" +filename);return;}imageYUV= new Image<Bgr, Byte>(YUVWidth, YUVHeight);this.Cursor =Cursors.WaitCursor;try{this.Text = "视频播放" +filename;log.ErrorFormat("视频播放" +filename);if(bPause){bPause= false;btnPause.Text= "暂停";}bPlayStop= false;bAbortPlayThread= false;btnStop.Enabled= true;btnPause.Enabled= true;trackBar1.ValueChanged-= newSystem.EventHandler(trackBar1_ValueChanged);trackBar1.Value= 0;trackBar1.ValueChanged+= newSystem.EventHandler(trackBar1_ValueChanged);trackBar1.Enabled= true;fs.Seek(0, SeekOrigin.Begin);
//获取文件长度long offset = 0;iFrameCnt= 0;byte[] intdata = new byte[4];while (fs.Length > offset + 556){fs.Read(intdata,0, 4);int frameLen = (int)(intdata[0] | intdata[1] << 8 | intdata[2] << 16 | intdata[3] << 24);offset= offset + frameLen + 556; //556 = 4 + 378 + 174
fs.Seek(offset, SeekOrigin.Begin);iFrameCnt++;}int seconds = (int)((double)iFrameCnt /fps);int h = (int)Math.Floor((double)seconds / 3600);int m = (int)Math.Floor((double)(seconds - h * 3600) / 60);int s = (int)Math.Floor((double)(seconds - h * 3600 - m * 60));sTotalTime= h.ToString().PadLeft(2, '0') + ":" + m.ToString().PadLeft(2, '0') + ":" + s.ToString().PadLeft(2, '0');this.labelProgress.Text = "00:00:00/" +sTotalTime;fs.Seek(0, SeekOrigin.Begin);playThread= new Thread(newParameterizedThreadStart(Play));playThread.IsBackground= true;playThread.Start(fs);showThread= new Thread(newThreadStart(DrawnShow));showThread.IsBackground= true;showThread.Start();}catch(System.Exception ex){log.ErrorFormat("视频初始化错误！" +ex.Message);MessageBox.Show("视频初始化错误！");}finally{this.Cursor =Cursors.Default;}}}private void btnStop_Click(objectsender, EventArgs e){labelValue= "00:00:00/00:00:00";SetLabelThread= new Thread(newThreadStart(setLableValue));SetLabelThread.IsBackground= true;SetLabelThread.Start();this.Text = "视频播放";trackBar1.ValueChanged-= newSystem.EventHandler(trackBar1_ValueChanged);trackBar1.Value= 0;trackBar1.ValueChanged+= newSystem.EventHandler(trackBar1_ValueChanged);trackBar1.Enabled= false;if (fs != null){fs.Close();fs.Dispose();}bAbortPlayThread= true;btnStop.Enabled= false;btnPause.Enabled= false;if(bPause){bPause= false;btnPause.Text= "暂停";}}