CVD::V4LBuffer< T > Class Template Reference
[Video buffers]

#include <v4lbuffer.h>

Inheritance diagram for CVD::V4LBuffer< T >:

[legend]

List of all members.

Classes
struct	V4LFrame
Public Member Functions
virtual bool	frame_pending ()
virtual double	frame_rate ()
	What is the (expected) frame rate of this video buffer, in frames per second?
virtual VideoFrame< T > *	get_frame ()
	Returns the next frame from the buffer. This function blocks until a frame is ready.
int	num_buffers ()
virtual void	put_frame (VideoFrame< T > *f)
virtual ImageRef	size ()
	The size of the VideoFrames returned by this buffer.
	V4LBuffer (const std::string &dev, ImageRef size, int input=-1, bool fields=false, int frames_per_second=0, bool verbose=0)
Private Member Functions
void	operator= (V4LBuffer &copyof)
	V4LBuffer (V4LBuffer &copyof)

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Detailed Description

template<class T>
class CVD::V4LBuffer< T >

A live video buffer which uses the Video for Linux 2 (V4L2) API. A replacement for the (deprecated?) V4L2Buffer

Definition at line 172 of file v4lbuffer.h.

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Constructor & Destructor Documentation

template<class T >

CVD::V4LBuffer< T >::V4LBuffer	(	const std::string &	dev,
		ImageRef	size,
		int	input = -1,
		bool	fields = false,
		int	frames_per_second = 0,
		bool	verbose = 0
	)			[inline]

Definition at line 175 of file v4lbuffer.h.

template<class T >

CVD::V4LBuffer< T >::V4LBuffer

(

V4LBuffer< T > &

copyof

)

[inline, private]

Definition at line 228 of file v4lbuffer.h.

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Member Function Documentation

template<class T >

virtual bool CVD::V4LBuffer< T >::frame_pending

(

)

[inline, virtual]

Is there a frame waiting in the buffer? This function does not block. See is_live and is_flushable.

Implements CVD::RawVideoBuffer.

Definition at line 201 of file v4lbuffer.h.

template<class T >

virtual double CVD::V4LBuffer< T >::frame_rate

(

)

[inline, virtual]

What is the (expected) frame rate of this video buffer, in frames per second?

Implements CVD::RawVideoBuffer.

Definition at line 206 of file v4lbuffer.h.

template<class T >

virtual VideoFrame<T>* CVD::V4LBuffer< T >::get_frame

(

)

[inline, virtual]

Returns the next frame from the buffer. This function blocks until a frame is ready.

Implements CVD::VideoBuffer< T >.

Definition at line 186 of file v4lbuffer.h.

template<class T >

int CVD::V4LBuffer< T >::num_buffers

(

)

[inline]

Reimplemented from CVD::V4L::RawV4LBuffer.

Definition at line 211 of file v4lbuffer.h.

template<class T >

void CVD::V4LBuffer< T >::operator=

(

V4LBuffer< T > &

copyof

)

[inline, private]

Definition at line 229 of file v4lbuffer.h.

template<class T >

virtual void CVD::V4LBuffer< T >::put_frame

(

VideoFrame< T > *

f

)

[inline, virtual]

Tell the buffer that you are finished with this frame. Typically the VideoBuffer then destroys the frame.

Parameters:

f

The frame that you are finished with.

Implements CVD::VideoBuffer< T >.

Definition at line 191 of file v4lbuffer.h.

template<class T >

virtual ImageRef CVD::V4LBuffer< T >::size

(

)

[inline, virtual]

The size of the VideoFrames returned by this buffer.

Implements CVD::RawVideoBuffer.

Definition at line 180 of file v4lbuffer.h.

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

• v4lbuffer.h