V4L2Capture Class Reference

Class for Video 4 Linux 2 (V4L2) capture. More...

#include <v4l2_source.h>

Collaboration diagram for V4L2Capture:

Public Member Functions
	V4L2Capture (std::string_view device, int width, int height)
	Construct a new V4L2Capture object.
V4L2Capture &	operator= (const V4L2Capture &)=delete
	Delete the assignment operator.
	~V4L2Capture ()
	Destroy the V4L2Capture::V4L2Capture object.
int	Initalise ()
	Initalise the V4L2 device.
bool	CaptureFrame (uint8_t *buffer) const
	Capture a frame from the V4L2 device.
	V4L2Capture (const V4L2Capture &)=delete
	Delete the copy constructor.

Private Member Functions
void	PrintCaps (const v4l2_capability *cap) const
	Print the capabilities of the V4L2 device.

Private Attributes
int	fd_ = -1
	The file descriptor for the V4L2 device.
std::string	device_
	The video capture device.
int	width_
	The width of the frame.
int	height_
	The height of the frame.
uint8_t *	buffer_ = nullptr
	The buffer to store the frame in.

Detailed Description

Class for Video 4 Linux 2 (V4L2) capture.

Constructor & Destructor Documentation

V4L2Capture()

V4L2Capture::V4L2Capture	(	std::string_view	device,
		int	width,
		int	height
	)

Construct a new V4L2Capture object.

Parameters

device	The device to capture from
width	The width of the frame
height	The height of the frame

Member Function Documentation

CaptureFrame()

bool V4L2Capture::CaptureFrame

(

uint8_t *

buffer

)

const

Capture a frame from the V4L2 device.

Parameters

buffer

The buffer to store the frame in

Returns

true

false

Initalise()

int V4L2Capture::Initalise

(

)

Initalise the V4L2 device.

Returns

int

operator=()

V4L2Capture & V4L2Capture::operator= ( const V4L2Capture &  )

delete

Delete the assignment operator.

Returns

V4L2Capture&

PrintCaps()

void V4L2Capture::PrintCaps ( const v4l2_capability *  cap ) const

private

Print the capabilities of the V4L2 device.

Parameters

cap

---

The documentation for this class was generated from the following files:

• src/v4l2/v4l2_source.h
• src/v4l2/v4l2_source.cc