Gv::Camera Class Reference

A high-level webcam interface that hooks into the GNet event loop and acts as an Gv::ImageInputSource. More...

#include <gvcamera.h>

Inheritance diagram for Gv::Camera:

Public Member Functions
	Camera (Gr::ImageConverter &, const std::string &dev_name, const std::string &dev_config, bool one_shot, bool lazy_open, unsigned int lazy_open_timeout, const std::string &caption, const Gv::Timezone &caption_tz=Gv::Timezone(), const std::string &image_input_source_name=std::string())
	Constructor. More...
virtual	~Camera ()
	Destructor.
bool	isOpen () const
	Returns true if the webcam device is open.
Public Member Functions inherited from Gv::ImageInputSource
	ImageInputSource (Gr::ImageConverter &, const std::string &source_name=std::string())
	Constructor.
virtual	~ImageInputSource ()
	Destructor.
size_t	handlers () const
	Returns the number of registered handlers.
void	addImageInputHandler (ImageInputHandler &)
	Adds a handler for image callbacks.
void	removeImageInputHandler (ImageInputHandler &)
	Removes a handler for image callbacks.
std::string	name () const
	Returns the source name, as passed to the constructor.

Additional Inherited Members
Protected Member Functions inherited from Gv::ImageInputSource
bool	sendImageInput (Gr::Image, ImageInputHandler *one_handler_p=nullptr)
	Sends a new image to all registered handlers, or optionally to just one of them. More...
void	sendNonImageInput (Gr::Image non_image, const std::string &type_str, ImageInputHandler *one_handler_p=nullptr)
	Sends non-image data to registered handlers (or one).

Detailed Description

A high-level webcam interface that hooks into the GNet event loop and acts as an Gv::ImageInputSource.

Supports lazy device opening, transparent re-opening, and slow reads.

Definition at line 50 of file gvcamera.h.

Constructor & Destructor Documentation

Gv::Camera::Camera	(	Gr::ImageConverter &	converter,
		const std::string &	dev_name,
		const std::string &	dev_config,
		bool	one_shot,
		bool	lazy_open,
		unsigned int	lazy_open_timeout,
		const std::string &	caption,
		const Gv::Timezone &	caption_tz = Gv::Timezone(),
		const std::string &	image_input_source_name = std::string()
	)

Constructor.

Adds itself to the GNet event loop.

The device configuration string supports a "sleep" parameter for slow reads; while sleeping any read events are ignored. The device configuration is also passed to the Gv::Capture sub-object.

Images are received by objects implementing Gv::ImageInputHandler, and they need to register themselves by calling the base class Gv::ImageInputSource::addImageInputHandler() method.

Definition at line 28 of file gvcamera.cpp.

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

• /home/graeme/videotools/src/gvideo/gvcamera.h
• /home/graeme/videotools/src/gvideo/gvcamera.cpp