Webcam Library Reference Documentation

_Handle Struct Reference

#include <Libs/libwebcam/libwebcam.h>

Detailed Description

Information associated with a device handle.

Note that a handle can have three different states:

Closed/free: The device handle is not being used by an application.
Valid: The device handle is open by an application and points to a valid device.
Invalid: The device handle is open by an application but does not point to a (valid) device anymore. This happens when a device is removed from the system but there are still open handles around. An "open" handle can be both valid or invalid.

Data Fields

Device * device

Pointer to the device structure associated with this handle.

int open

True if the handle is open (valid or invalid).

int last_system_error

The number of the last system error (e.g. a V4L2 return value).

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

Libs/libwebcam/libwebcam.h


Data Fields
Device *	device
	Pointer to the device structure associated with this handle.
int	open
	True if the handle is open (valid or invalid).
int	last_system_error
	The number of the last system error (e.g. a V4L2 return value).