jevois::VideoDisplay Class Reference

#include <jevois/Core/VideoDisplay.H>

Video output to local screen.

This class is useful for debugging machine vision code on a desktop computer as opposed to the JeVois hardware. Images are simply displayed on the local screen. Engine instantiates a VideoDisplay in place of Gadget if the provided Gadget device name is empty.

Definition at line 34 of file VideoDisplay.H.

Inheritance diagram for jevois::VideoDisplay:

Collaboration diagram for jevois::VideoDisplay:

Public Member Functions
	VideoDisplay (char const *displayname, size_t nbufs=2)
	Constructor. More...
virtual	~VideoDisplay ()
	Virtual destructor for safe inheritance. More...
void	setFormat (VideoMapping const &m) override
	Set the video format and frame rate, allocate the buffers. More...
void	get (RawImage &img) override
	Get a pre-allocated image so that we can fill the pixel data and later send out using send() More...
void	send (RawImage const &img) override
	Send an image out to display. More...
void	streamOn () override
	Start streaming. More...
void	abortStream () override
	Abort streaming. More...
void	streamOff () override
	Stop streaming. More...
Public Member Functions inherited from jevois::VideoOutput
virtual	~VideoOutput ()
	Virtual destructor for safe inheritance. More...

Constructor & Destructor Documentation

VideoDisplay()

jevois::VideoDisplay::VideoDisplay	(	char const *	displayname,
		size_t	nbufs = 2
	)

Constructor.

Definition at line 31 of file VideoDisplay.C.

Referenced by streamOff().

~VideoDisplay()

jevois::VideoDisplay::~VideoDisplay ( )

virtual

Virtual destructor for safe inheritance.

Definition at line 73 of file VideoDisplay.C.

References LERROR.

Referenced by streamOff().

Member Function Documentation

abortStream()

void jevois::VideoDisplay::abortStream ( )

overridevirtual

Abort streaming.

This only cancels future get() and done() calls, one should still call streamOff() to turn off streaming.

Implements jevois::VideoOutput.

Definition at line 156 of file VideoDisplay.C.

Referenced by streamOff().

get()

void jevois::VideoDisplay::get ( jevois::RawImage &  img )

overridevirtual

Get a pre-allocated image so that we can fill the pixel data and later send out using send()

Implements jevois::VideoOutput.

Definition at line 92 of file VideoDisplay.C.

References jevois::RawImage::bufindex, and LDEBUG.

Referenced by streamOff().

send()

void jevois::VideoDisplay::send ( jevois::RawImage const &  img )

overridevirtual

Send an image out to display.

Implements jevois::VideoOutput.

Definition at line 100 of file VideoDisplay.C.

References jevois::RawImage::buf, jevois::RawImage::bufindex, jevois::RawImage::fmt, jevois::RawImage::height, LDEBUG, LFATAL, and jevois::RawImage::width.

Referenced by streamOff().

setFormat()

void jevois::VideoDisplay::setFormat ( jevois::VideoMapping const &  m )

overridevirtual

Set the video format and frame rate, allocate the buffers.

Implements jevois::VideoOutput.

Definition at line 40 of file VideoDisplay.C.

References jevois::RawImage::buf, jevois::RawImage::bufindex, jevois::RawImage::fmt, jevois::RawImage::fps, jevois::RawImage::height, LDEBUG, jevois::VideoMapping::ofmt, jevois::VideoMapping::ofps, jevois::VideoMapping::oh, jevois::VideoMapping::osize(), jevois::VideoMapping::ow, and jevois::RawImage::width.

Referenced by streamOff().

streamOff()

void jevois::VideoDisplay::streamOff ( )

overridevirtual

Stop streaming.

Implements jevois::VideoOutput.

Definition at line 160 of file VideoDisplay.C.

References abortStream(), get(), LERROR, LFATAL, send(), setFormat(), streamOn(), VideoDisplay(), and ~VideoDisplay().

streamOn()

void jevois::VideoDisplay::streamOn ( )

overridevirtual

Start streaming.

Implements jevois::VideoOutput.

Definition at line 152 of file VideoDisplay.C.

Referenced by streamOff().

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

• include/jevois/Core/VideoDisplay.H
• src/jevois/Core/VideoDisplay.C