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ScreenCaptureStream Class

Screen capture video source.
Inheritance Hierarchy
SystemObject
  Accord.VideoScreenCaptureStream

Namespace:  Accord.Video
Assembly:  Accord.Video (in Accord.Video.dll) Version: 3.7.0
Syntax
public class ScreenCaptureStream : IVideoSource
Request Example View Source

The ScreenCaptureStream type exposes the following members.

Constructors
  NameDescription
Public methodScreenCaptureStream(Rectangle)
Initializes a new instance of the ScreenCaptureStream class.
Public methodScreenCaptureStream(Rectangle, Int32)
Initializes a new instance of the ScreenCaptureStream class.
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Properties
  NameDescription
Public propertyBytesReceived
Received bytes count.
Public propertyFrameInterval
Time interval between making screen shots, ms.
Public propertyFramesReceived
Received frames count.
Public propertyIsRunning
State of the video source.
Public propertyRegion
Gets or sets the screen capture region.
Public propertySource
Video source.
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Methods
  NameDescription
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodSignalToStop
Signal video source to stop its work.
Public methodStart
Start video source.
Public methodStop
Stop video source.
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Public methodWaitForStop
Wait for video source has stopped.
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Events
  NameDescription
Public eventNewFrame
New frame event.
Public eventPlayingFinished
Video playing finished event.
Public eventVideoSourceError
Video source error event.
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Extension Methods
  NameDescription
Public Extension MethodHasMethod
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.)
Public Extension MethodIsEqual
Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices.
(Defined by Matrix.)
Public Extension MethodToT
Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.)
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Remarks

The video source constantly captures the desktop screen.

Sample usage:

// get entire desktop area size
Rectangle screenArea = Rectangle.Empty;
foreach ( System.Windows.Forms.Screen screen in 
          System.Windows.Forms.Screen.AllScreens )
{
    screenArea = Rectangle.Union( screenArea, screen.Bounds );
}

// create screen capture video source
ScreenCaptureStream stream = new ScreenCaptureStream( screenArea );

// set NewFrame event handler
stream.NewFrame += new NewFrameEventHandler( video_NewFrame );

// start the video source
stream.Start( );

// ...
// signal to stop
stream.SignalToStop( );
// ...

private void video_NewFrame( object sender, NewFrameEventArgs eventArgs )
{
    // get new frame
    Bitmap bitmap = eventArgs.Frame;
    // process the frame
}
See Also