参考上一篇：
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
public frmPlay()
{
InitializeComponent();
#region 解码器相关初始化，一般在窗口load中进行初始化
decAttr = new H264Dec.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(ref decAttr);
#endregion
InitVars();
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
private Thread SetPicVideoThread;
FileStream fs = null;
private delegate void SetProgressLabel(string val);
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;
}
else
if (imageVideoOverLay.Visible)
{
imageVideoOverLay.Visible = false;
}
if (val != null && !bAbortPlayThread)
{
this.imgBox.Image = val;
imgBox.Refresh();
}
}
private void setPicVideo()
{
if (bPause || bPlayStop || bAbortPlayThread) return;
if (imgBox.InvokeRequired)
{
SetPicVideo d = new SetPicVideo(SetPic);
object[] arg = new object[] { imgNowShow };
this.Invoke(d, arg);
}
else
{
SetPic(imgNowShow);
}
}
List<BufferPlay> BufferPlayList = new List<BufferPlay>();
private void DrawnShow()
{
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(new ThreadStart(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(new ThreadStart(setLableValue));
SetLabelThread.IsBackground = true;
SetLabelThread.Start();
}
DateTime timeStop2 = DateTime.Now;
TimeSpan ts2 = new TimeSpan();
ts2 = timeStop2 - dtStart;
if (ts2.TotalMilliseconds < msPerFrameCamera)
{
Thread.Sleep((int)(msPerFrameCamera - ts2.TotalMilliseconds));
}
}
}
}
private void Play(object ofs)
{
FileStream fsTmp = ofs as FileStream;
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(new ThreadStart(setLableValue));
SetLabelThread.IsBackground = true;
SetLabelThread.Start();
fsTmp.Seek(0, SeekOrigin.Begin);
playThread = new Thread(new ParameterizedThreadStart(Play));
playThread.IsBackground = true;
playThread.Start(fsTmp);
showThread = new Thread(new ThreadStart(DrawnShow));
showThread.IsBackground = true;
showThread.Start();
}
else
{
fsTmp.Close();
fsTmp.Dispose();
bPlayStop = true;
labelValue = "00:00:00/00:00:00";
SetLabelThread = new Thread(new ThreadStart(setLableValue));
SetLabelThread.IsBackground = true;
SetLabelThread.Start();
}
}
private void trackBar1_ValueChanged(object sender, 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(string val)
{
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 -= new System.EventHandler(trackBar1_ValueChanged);
trackBar1.Value = 0;
trackBar1.ValueChanged += new System.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 -= new System.EventHandler(trackBar1_ValueChanged);
trackBar1.Value = (int)((double)iFramePlay / (double)iFrameCnt * trackBar1.Maximum);
trackBar1.ValueChanged += new System.EventHandler(trackBar1_ValueChanged);
}
}
private void setLableValue()
{
if (bPause || bAbortPlayThread) return;
if (labelProgress.InvokeRequired)
{
SetProgressLabel d = new SetProgressLabel(SetStatuslabel);
object[] arg = new object[] { labelValue };//要传入的参数值
this.Invoke(d, arg);
}
else
{
SetStatuslabel(labelValue);
}
}
private void btnOpen_Click(object sender, 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 = new FileStream(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 -= new System.EventHandler(trackBar1_ValueChanged);
trackBar1.Value = 0;
trackBar1.ValueChanged += new System.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(new ParameterizedThreadStart(Play));
playThread.IsBackground = true;
playThread.Start(fs);
showThread = new Thread(new ThreadStart(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(object sender, EventArgs e)
{
labelValue = "00:00:00/00:00:00";
SetLabelThread = new Thread(new ThreadStart(setLableValue));
SetLabelThread.IsBackground = true;
SetLabelThread.Start();
this.Text = "视频播放";
trackBar1.ValueChanged -= new System.EventHandler(trackBar1_ValueChanged);
trackBar1.Value = 0;
trackBar1.ValueChanged += new System.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";
}
}
时间： 2024-10-06 13:20:40