/// <summary>
/// 指定时间来截取视频中的图片
/// </summary>
/// <param name="FileName"></param>
/// <param name="ImgFormat"></param>
/// <param name="lTime"></param>
public Image GetImage(double lTime)
{
Image img = null;
int MaxCount = lTime <= 0 ? DESConsts.BitCount : (int)lTime * DESConsts.BitCount;
try
{
Panel pnl = new Panel();
pVideo = new DESVideoCallBack();
pnl.Width = this.hWin.Width;
pnl.Height = this.hWin.Height;
des.RenderToFrame(pnl, pVideo, null, DynamicTextDS, DsRect.FromRectangle(hWin.ClientRectangle), 0, ds.PlayLength);
des.StartRendering();
des.put_CurrentPosition(lTime);
while (pVideo.m_FrameCount < MaxCount)
{
Thread.Sleep(100);
}
des.Pause();
img = des.GetImage();
des.Cancel();
}
catch
{
des.Cancel();
des = null;
}
return(img);
}
/// <summary>
/// 构造和初始播放视频的数据
/// </summary>
/// <param name="ds"></param>
/// <param name="myWin"></param>
public Play(VideoLayerCollection myDS, DESVideoCallBack pVideoCallback, Control myWin)
{
hWin = myWin;
ds = myDS;
pVideo = pVideoCallback;
ds.Sort(new SortComparer <Layer>("Level", false));
des = new DESCombine(DESConsts.FPS, DESConsts.BitCount, hWin.Width, hWin.Height, ds);
DynamicTextDS = ds.FindAll(DynamicTextLayer);
}
/// <summary>
/// 释放资源
/// </summary>
protected override void Dispose(bool disposing)
{
if (des != null)
{
des.Dispose();
des = null;
}
if (PlayEvent != null)
{
PlayEvent = null;
}
if (PlayListCompleted != null)
{
PlayListCompleted = null;
}
if (PlayCompleted != null)
{
PlayCompleted = null;
}
if (m_PlayBar != null)
{
m_PlayBar = null;
}
if (m_MediaTime != null)
{
m_MediaTime = null;
}
if (pVideo != null)
{
pVideo = null;
}
if (hWin != null)
{
hWin = null;
}
}
/// <summary>
/// Start PlayList
/// </summary>
private void StartPlay()
{
EventArgs ca = new EventArgs();
int RunTime = 0;
curNum = 0;
PlayState = PlayState.Next;
while (curNum >= 0 && curNum < dsArr.Length)
{
if (PlayState == PlayState.Stop)
{
if (des != null)
{
des.Cancel();
}
break;
}
if (PlayState == PlayState.Next)
{
dsArr[curNum].Sort(new SortComparer <Layer>("Level", false));
des = new DESCombine(DESConsts.FPS, DESConsts.BitCount, hWin.Width, hWin.Height, dsArr[curNum]);
DynamicTextDS = dsArr[curNum].FindAll(DynamicTextLayer);
des.Completed += new EventHandler(Completed);
pVideo = new DESVideoCallBack(RunTime, m_PlayBar, m_MediaTime);
des.RenderToFrame(hWin, pVideo, null, DynamicTextDS, DsRect.FromRectangle(hWin.ClientRectangle), 0, dsArr[curNum].PlayLength);
des.StartRendering();
PlayState = PlayState.Run;
PlayLength = DESHelper.FormatTime(dsArr[curNum].PlayLength);
}
else
{
if (PlayState == PlayState.Run)
{
curLength += 1000000;
}
if (curLength >= PlayLength)
{
RunTime += (int)dsArr[curNum].PlayLength;
curNum++;
curLength = 0;
PlayState = PlayState.Next;
if (curNum == dsArr.Length)
{
PlayState = PlayState.Stop;
}
if (des != null)
{
des.Stop();
}
}
Thread.Sleep(100);
}
}
if (des != null)
{
des.Cancel();
}
hWin.Refresh();
if (PlayListCompleted != null)
{
PlayListCompleted(this, ca);
}
}
public void Generate()
{
Check.Require(Layers, "Layers", Check.NotNull);
Check.Require(Layers.Length, "Layers.Length", Check.GreaterThan <int>(0));
Check.Require(HWnd, "HWnd", Check.NotNull);
Check.Require(Tick, "Tick", Check.GreaterThanOrEqual <int>(0));
var layers = helper.PopulateDataBatchLoad(Layers);
layers.BackColor = HWnd.BackColor;
//layers.VideoSize = new Size(ControlService.SignCombo.Current.Width, ControlService.SignCombo.Current.Height);
layers.VideoSize = HWnd.Size;
layers.Sort(new SortComparer <Layer>("Level", false));
var DynamicTextDS = layers.FindAll(item => { return(item.LayerType == LayerType.DynamicText); });
if (layers.Count == 0)
{
//TODO:
var img = new Bitmap(HWnd.Width, HWnd.Height);
using (var g = Graphics.FromImage(img))
{
g.Clear(HWnd.BackColor);
}
NailImage = img;
return;
}
//using (var des = new DESCombine(DESConsts.FPS, DESConsts.BitCount, HWnd.Width, HWnd.Height, layers))
var des = new DESCombine(DESConsts.FPS, DESConsts.BitCount, layers.VideoSize.Width, layers.VideoSize.Height, layers);
{
int MaxCount = Tick <= 0 ? DESConsts.BitCount : (int)Tick * DESConsts.BitCount;
ManualResetEvent mre = new ManualResetEvent(false);
bool hasSign = false;
try
{
Control.CheckForIllegalCrossThreadCalls = false;
Panel pnl = new Panel();
var callback = new DESVideoCallBack();
EventHandler onCompleted = delegate
{
if (des != null)
{
des.Dispose();
}
Control.CheckForIllegalCrossThreadCalls = true;
if (!hasSign)
{
hasSign = true;
mre.Set();
}
};
callback.OnCallBack = () =>
{
try
{
if (callback.m_FrameCount == 5)
{
des.Pause();
hasSign = true;
mre.Set();
}
}
catch
{
}
};
des.Completed += onCompleted;
pnl.Width = layers.VideoSize.Width;
pnl.Height = layers.VideoSize.Height;
des.RenderToFrame(pnl, callback, null, DynamicTextDS, DsRect.FromRectangle(HWnd.ClientRectangle), 0, layers.PlayLength);
des.StartRendering();
des.put_CurrentPosition(Tick);
mre.WaitOne();
mre.Close();
if (des != null && !des.IsDisposed)
{
NailImage = des.GetImage();
des.Cancel();
}
}
catch
{
des.Cancel();
}
}
}
