The channel interface. More...

Public Member Functions
string	getClientType ()
	Retrieve the channel type. More...

Webcam_2_0_0	getWebcam ()
	Retrieve the webcam. More...

boolean	isAvailable ()
	Determine whether the channel is available. More...

void	release ()
	Releases the channel to allow lower proritized clients to view an image otherwise the channel expires when it is unused (neither a image related method nor "isAvailable" is called) for 20 seconds.

int	captureImage (out Image_2_0_0 image)
	Retrieve a image. More...

int	triggerCapture (out string captureToken)
	Triggers the capture process to the temporary folder and returns a capture token to view them. More...

Public Attributes
constant int	NO_ERROR = 0
	Error codes. More...

constant int	ERR_NOT_AVAILABLE = 2
	Channel is not available.

constant int	ERR_NO_SUCH_OBJECT = 3
	Requested object does not exist.

Detailed Description

The channel interface.

Member Function Documentation

int webcam::Channel::captureImage ( out Image_2_0_0 image )

Retrieve a image.

Parameters

image Result: the image

Returns: NO_ERROR on success; ERR_NOT_AVAILABLE this channel is temporarily paused, because all view ports are currently used by higher prioritized events; ERR_NO_SUCH_OBJECT the viewed webcam was detached

string webcam::Channel::getClientType ( )

Retrieve the channel type.

Webcam_2_0_0 webcam::Channel::getWebcam ( )

Retrieve the webcam.

boolean webcam::Channel::isAvailable ( )

Determine whether the channel is available.

A channel may become unavailable when higher prioritized viewers are active.

int webcam::Channel::triggerCapture ( out string captureToken )

Triggers the capture process to the temporary folder and returns a capture token to view them.

The capture token is valid for 9 seconds and needs to be refreshed when, or even better before the old token expires.

Parameters

captureToken Result: a new captureToken

Returns: NO_ERROR on success; ERR_NOT_AVAILABLE this channel is temporarily paused, because all view ports are currently used by higher prioritized events; ERR_NO_SUCH_OBJECT the viewed webcam was detached

constant int webcam::Channel::NO_ERROR = 0

Error codes.

Operation successful, no error

The documentation for this interface was generated from the following file: