我怎样才能知道何时完成Directshow.net转换？ [英] How can i tell when a Directshow.net conversion is done?

问题描述

现在我有一个Directshow.net图形，它可以接收视频文件并将其编码为文件，但是它仍然可以继续运行

right now I have a Directshow.net graph that takes in a video file and encodes it to a file, however it just continues to run

int x = program.Run() 

在DirectShow.net中，我想要程序完成完全转换后就关闭了，而不必我猜测。

in DirectShow.net and i want the program to close when the full conversion is done instead of me having to guess.

我怎么知道它是否以编程方式完成了编码？

how can i tell if its done encoding programatically?

推荐答案

如果具有mediaEvent变量，则可以对照WaitForCompletion函数检查代码是否已完成运行。如果waitforcompletion的结果（在本例中为gh）不为0，则它​​正在运行；如果等于0，则完成。

If you have a mediaEvent variable you can check against the WaitForCompletion function to see if the code is done running. if the result of the waitforcompletion ( gh in this case) is not 0, it is running, if it is equal to 0, then its done.

const int E_Abort = unchecked((int)0x80004004); 
EventCode evCode; 
int gh = mediaEvent.WaitForCompletion(1000, out evCode); 
DsROTEntry rot = new DsROTEntry(filter); 
while (gh == E_Abort) 
{ System.Windows.Forms.Application.DoEvents(); 
gh = this.mediaEvent.WaitForCompletion(1000, out evCode); }  

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