C# Class NewTOAPIA.Media.VfwCameraDevice

The VfwCameraDevice object represents a Vfw video capture device. As Vfw also supports audio capture devices, this object is specialized to only the video capture interfaces.

Inheritance: VfwCaptureDevice

Datei anzeigen Open project: Wiladams/NewTOAPIA Class Usage Examples

Public Methods

Method	Description
ConfigureCapture ( ) : void	We can configure some settings related to capturing images from the camera. Primarily we want to control how many buffers are used in the capture process. If we are doing continuous capture, we can configure the interval between subsequent frames.
GetBitmapInfo ( ) : BITMAPINFO
GrabSingleFrame ( ) : bool	Grab a single frame from the video device. Disables Overlay and preview. Since we want complete control of video grabbing, this is what we want. We don't want or need a preview window, and we don't want to be doing overlay either. As the frame is grabbed, our frameDelegate function is called with the retrieved frame.
OnConnected ( ) : void
ShowCompressionChoices ( ) : void
ShowPreviewWindow ( ) : bool
ShowVideoFormats ( ) : void
ShowVideoSourceChoices ( ) : void	If the driver supports a dialog box to select the video Source, this method will display it on the screen.
StartStreaming ( ) : bool
StopStreaming ( ) : bool
VfwCameraDevice ( int width, int height ) : System
VfwCameraDevice ( int index, int width, int height, int fps, int windowStyle, IntPtr parentWindow ) : System

Private Methods

Method	Description
ConfigureVideoFormat ( ) : void
ControlCallback ( IntPtr hWnd, int nState ) : int
ErrorCallback ( IntPtr hWnd, int nID, string lpsz ) : int
FrameCallBack ( IntPtr hwnd, VIDEOHDR &hdr ) : void
PrintCompressionType ( uint compression ) : void
StatusCallback ( IntPtr hWnd, int nID, string lpsz ) : int
StreamCallBack ( IntPtr hwnd, VIDEOHDR &hdr ) : void

Method Details

ConfigureCapture() public method

We can configure some settings related to capturing images from the camera. Primarily we want to control how many buffers are used in the capture process. If we are doing continuous capture, we can configure the interval between subsequent frames.

public ConfigureCapture ( ) : void
return	void

GetBitmapInfo() public method

public GetBitmapInfo ( ) : BITMAPINFO
return	TOAPI.Types.BITMAPINFO

GrabSingleFrame() public method

Grab a single frame from the video device. Disables Overlay and preview. Since we want complete control of video grabbing, this is what we want. We don't want or need a preview window, and we don't want to be doing overlay either. As the frame is grabbed, our frameDelegate function is called with the retrieved frame.

public GrabSingleFrame ( ) : bool
return	bool

OnConnected() public method

public OnConnected ( ) : void
return	void

ShowCompressionChoices() public method

public ShowCompressionChoices ( ) : void
return	void

ShowPreviewWindow() public method

public ShowPreviewWindow ( ) : bool
return	bool

ShowVideoFormats() public method

public ShowVideoFormats ( ) : void
return	void

ShowVideoSourceChoices() public method

If the driver supports a dialog box to select the video Source, this method will display it on the screen.

public ShowVideoSourceChoices ( ) : void
return	void

StartStreaming() public method

public StartStreaming ( ) : bool
return	bool

StopStreaming() public method

public StopStreaming ( ) : bool
return	bool

VfwCameraDevice() public method

public VfwCameraDevice ( int width, int height ) : System
width	int
height	int
return	System

VfwCameraDevice() public method

public VfwCameraDevice ( int index, int width, int height, int fps, int windowStyle, IntPtr parentWindow ) : System
index	int
width	int
height	int
fps	int
windowStyle	int
parentWindow	System.IntPtr
return	System