C# Class AForge.Video.DirectShow.FileVideoSource

Video source for video files.

The video source provides access to video files. DirectShow is used to access video files.

Sample usage:

 // create video source FileVideoSource videoSource = new FileVideoSource( fileName ); // set NewFrame event handler videoSource.NewFrame += new NewFrameEventHandler( video_NewFrame ); // start the video source videoSource.Start( ); // ... // signal to stop videoSource.SignalToStop( ); // ... // New frame event handler, which is invoked on each new available video frame private void video_NewFrame( object sender, NewFrameEventArgs eventArgs ) { // get new frame Bitmap bitmap = eventArgs.Frame; // process the frame }

Inheritance: IVideoSource

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Public Methods

Method	Description
FileVideoSource ( ) : System	Initializes a new instance of the FileVideoSource class.
FileVideoSource ( string fileName ) : System	Initializes a new instance of the FileVideoSource class.
SignalToStop ( ) : void	Signal video source to stop its work. Signals video source to stop its background thread, stop to provide new frames and free resources.
Start ( ) : void	Start video source. Starts video source and return execution to caller. Video source object creates background thread and notifies about new frames with the help of NewFrame event.
Stop ( ) : void	Stop video source. Stops video source aborting its thread. Since the method aborts background thread, its usage is highly not preferred and should be done only if there are no other options. The correct way of stopping camera is signaling it stop and then waiting for background thread's completion.
WaitForStop ( ) : void	Wait for video source has stopped. Waits for source stopping after it was signalled to stop using SignalToStop method.

Protected Methods

Method	Description
OnNewFrame ( Bitmap image ) : void	Notifies client about new frame.

Private Methods

Method	Description
Free ( ) : void	Free resource.
WorkerThread ( ) : void	Worker thread.

Method Details

FileVideoSource() public method

Initializes a new instance of the FileVideoSource class.

public FileVideoSource ( ) : System
return	System

FileVideoSource() public method

Initializes a new instance of the FileVideoSource class.

public FileVideoSource ( string fileName ) : System
fileName	string	Video file name.
return	System

OnNewFrame() protected method

Notifies client about new frame.

protected OnNewFrame ( Bitmap image ) : void
image	System.Drawing.Bitmap	New frame's image.
return	void

SignalToStop() public method

Signal video source to stop its work.

Signals video source to stop its background thread, stop to provide new frames and free resources.

public SignalToStop ( ) : void
return	void

Start() public method

Start video source.

Starts video source and return execution to caller. Video source object creates background thread and notifies about new frames with the help of NewFrame event.

public Start ( ) : void
return	void

Stop() public method

Stop video source.

Stops video source aborting its thread.

Since the method aborts background thread, its usage is highly not preferred and should be done only if there are no other options. The correct way of stopping camera is signaling it stop and then waiting for background thread's completion.

public Stop ( ) : void
return	void

WaitForStop() public method

Wait for video source has stopped.

Waits for source stopping after it was signalled to stop using SignalToStop method.

public WaitForStop ( ) : void
return	void