CVD::DVBuffer2< T > Class Template Reference

A video buffer from a Firewire (IEEE 1394) camera. More...

#include <dvbuffer.h>

Inheritance diagram for CVD::DVBuffer2< T >:

List of all members.

Public Member Functions
	DVBuffer2 (int cam_no, int num_dma_buffers, int bright=-1, int exposure=-1, double fps=DC::cam_type< T >::fps)
double	frame_rate ()
virtual ImageRef	size ()
virtual VideoFrame< T > *	get_frame ()
virtual void	put_frame (VideoFrame< T > *f)
virtual bool	frame_pending ()
virtual void	seek_to (double)

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Detailed Description

template<class T>
class CVD::DVBuffer2< T >

A video buffer from a Firewire (IEEE 1394) camera.

The requested image format depends on the templated pixel type. Frames of size 640 by 480 pixels are requested, at 30fps (except for CVD::Rgb<CVD::byte>, which is 15fps).

Parameters:

T	The pixel type of the frames. Currently only <CVD::Rgb<CVD::byte> > CVD::yuv411> and CVD::byte> are supported.

Definition at line 244 of file dvbuffer.h.

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Constructor & Destructor Documentation

template<class T >

CVD::DVBuffer2< T >::DVBuffer2	(	int	cam_no,
		int	num_dma_buffers,
		int	bright = -1,
		int	exposure = -1,
		double	fps = DC::cam_type<T>::fps
	)		[inline]

Construct a video buffer.

Parameters:

cam_no	The camera number (the first camera is 0)
num_dma_buffers	The number of DMA buffers to use (at least 3 is recommended)
bright	The brightness correction (default = -1 = automatic)
exposure	The exposure correction (default = -1 = automatic)
fps	The number of frames per second (default = 30fps)

Definition at line 253 of file dvbuffer.h.

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Member Function Documentation

template<class T >

virtual void CVD::DVBuffer2< 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 279 of file dvbuffer.h.

template<class T >

virtual void CVD::DVBuffer2< T >::seek_to

(

double

)

[inline, virtual]

Go to a particular point in the video buffer (only implemented in buffers of recorded video)

Parameters:

t	The frame time in seconds

Reimplemented from CVD::RawVideoBuffer.

Definition at line 289 of file dvbuffer.h.

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

• cvd/Linux/dvbuffer.h