zbar::Video Class Reference

mid-level video source abstraction. More...

Collaboration diagram for zbar::Video:

Public Member Functions
	Video (zbar_video_t *video=NULL)
	constructor. More...
	Video (std::string &device)
	constructor. More...
	~Video ()
void	close ()
	close video device if open. More...
void	enable (bool enable=true)
	start/stop video capture. More...
int	get_fd ()
	retrieve file descriptor associated with open *nix video device. More...
int	get_height ()
	retrieve current output image height. More...
int	get_width ()
	retrieve current output image width. More...
void	init (unsigned long fourcc)
	initialize video using a specific format for debug. More...
void	init (std::string &format)
	initialize video using a specific format for debug. More...
Image	next_image ()
	retrieve next captured image. More...
void	open (std::string &device)
	open and probe a video device. More...
	operator zbar_video_t * () const
	cast to C video object. More...
void	request_interface (int version)
	request a preferred driver interface version for debug/testing. More...
void	request_iomode (int iomode)
	request a preferred I/O mode for debug/testing. More...
void	request_size (int width, int height)
	request a preferred size for the video image from the device. More...

Private Attributes
zbar_video_t *	_video

Detailed Description

mid-level video source abstraction.

captures images from a video device

Constructor & Destructor Documentation

zbar::Video::Video ( zbar_video_t *  video = NULL )

inline

constructor.

References _video, video, and zbar::zbar_video_create().

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zbar::Video::Video ( std::string &  device )

inline

constructor.

References _video, open(), and zbar::zbar_video_create().

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zbar::Video::~Video ( )

inline

References _video, and zbar::zbar_video_destroy().

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Member Function Documentation

void zbar::Video::close ( )

inline

close video device if open.

References _video, zbar::throw_exception(), and zbar::zbar_video_open().

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void zbar::Video::enable ( bool  enable = true )

inline

start/stop video capture.

see zbar_video_enable()

References _video, zbar::throw_exception(), and zbar::zbar_video_enable().

Referenced by zbar::QZBarThread::enableVideo().

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int zbar::Video::get_fd ( )

inline

retrieve file descriptor associated with open *nix video device.

see zbar_video_get_fd()

References _video, and zbar::zbar_video_get_fd().

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int zbar::Video::get_height ( )

inline

retrieve current output image height.

see zbar_video_get_height()

References _video, and zbar::zbar_video_get_height().

Referenced by zbar::QZBarThread::openVideo().

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int zbar::Video::get_width ( )

inline

retrieve current output image width.

see zbar_video_get_width()

References _video, and zbar::zbar_video_get_width().

Referenced by zbar::QZBarThread::openVideo().

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void zbar::Video::init ( unsigned long  fourcc )

inline

initialize video using a specific format for debug.

see zbar_video_init()

References _video, zbar::throw_exception(), and zbar::zbar_video_init().

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void zbar::Video::init ( std::string &  format )

inline

initialize video using a specific format for debug.

see zbar_video_init()

References _video, fourcc, zbar::throw_exception(), and zbar::zbar_video_init().

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Image zbar::Video::next_image ( )

inline

retrieve next captured image.

see zbar_video_next_image()

References _video, zbar::throw_exception(), and zbar::zbar_video_next_image().

Referenced by zbar::QZBarThread::run().

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void zbar::Video::open ( std::string &  device )

inline

open and probe a video device.

References _video, zbar::throw_exception(), and zbar::zbar_video_open().

Referenced by Video().

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zbar::Video::operator zbar_video_t * ( ) const

inline

cast to C video object.

References _video.

void zbar::Video::request_interface ( int  version )

inline

request a preferred driver interface version for debug/testing.

see zbar_video_request_interface()

Since

0.6

References _video, and zbar::zbar_video_request_interface().

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void zbar::Video::request_iomode ( int  iomode )

inline

request a preferred I/O mode for debug/testing.

see zbar_video_request_iomode()

Since

0.7

References _video, zbar::throw_exception(), and zbar::zbar_video_request_iomode().

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void zbar::Video::request_size ( int  width, int  height  )

inline

request a preferred size for the video image from the device.

see zbar_video_request_size()

Since

0.6

References _video, and zbar::zbar_video_request_size().

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Member Data Documentation

zbar_video_t* zbar::Video::_video

private

Referenced by close(), enable(), get_fd(), get_height(), get_width(), init(), next_image(), open(), operator zbar_video_t *(), request_interface(), request_iomode(), request_size(), Video(), and ~Video().

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

• Video.h