HardwareSingleVideoSource Class Reference

#include <HardwareSingleVideoSource.hh>

Inheritance diagram for HardwareSingleVideoSource:

[legend]Collaboration diagram for HardwareSingleVideoSource:

[legend]List of all members.

---

Detailed Description

It uses a single-stream behaviour to retrieve one stream of IplImage(s) from an hardware device, a webcam or a framegrabber.

Definition at line 35 of file HardwareSingleVideoSource.hh.

Public Member Functions
	HardwareSingleVideoSource (int camera_num)
	Constructor.
virtual	~HardwareSingleVideoSource ()
bool	init_device ()
	Init device. It can be a webcam, a framegrabber or simpler a buffered class.
bool	is_multi_stream ()
	Determine if the derived class is of type multi-stream or single-stream.
IplImage *	get_next_frame ()
	Get the next image in the stream.
virtual IplImage *	get_next_frame_by_stream_id (int stream_id)
	Redefined virtual function for multi video source.
virtual void	add_image_by_stream_id (IplImage *image, int stream_id, char *__unused__, void *callback_data)
	Redefined virtual function for multi video source.
Private Attributes
bool	_initialized
	Specify whether the class is initialized or not.
int	_camera_num
	Camera number mapped on system.
CvCapture *	_cam_input
	OpenCV capture structure.

---

Constructor & Destructor Documentation

HardwareSingleVideoSource::HardwareSingleVideoSource

(

int

camera_num

)

Parameters:

camera_num

Identify the camera between other grabbing inputs devices.

Definition at line 23 of file HardwareSingleVideoSource.cpp.

References _initialized.

HardwareSingleVideoSource::~HardwareSingleVideoSource

(

)

[virtual]

Definition at line 29 of file HardwareSingleVideoSource.cpp.

References _cam_input, _initialized, and NULL.

---

Member Function Documentation

void HardwareSingleVideoSource::add_image_by_stream_id	(	IplImage *	image,
		int	stream_id,
		char *	__unused__,
		void *	callback_data
	)			[virtual]

We don't need them here

Reimplemented from BaseInputVideo.

Definition at line 84 of file HardwareSingleVideoSource.cpp.

IplImage * HardwareSingleVideoSource::get_next_frame

(

)

[virtual]

Depends on OpenCV grabbing context.

Returns:

The next image in the stream.

Note:

The returned IplImage* must be freed by the caller.

Implements BaseInputVideo.

Definition at line 53 of file HardwareSingleVideoSource.cpp.

References _cam_input, _initialized, DEBUG_PRINT, init_device(), and NULL.

Here is the call graph for this function:

IplImage * HardwareSingleVideoSource::get_next_frame_by_stream_id

(

int

stream_id

)

[virtual]

We don't need them here

Implements BaseInputVideo.

Definition at line 79 of file HardwareSingleVideoSource.cpp.

References NULL.

bool HardwareSingleVideoSource::init_device

(

)

[virtual]

Implements BaseInputVideo.

Definition at line 38 of file HardwareSingleVideoSource.cpp.

References _cam_input, _camera_num, _initialized, DEBUG_PRINT, and NULL.

Referenced by get_next_frame().

Here is the caller graph for this function:

bool HardwareSingleVideoSource::is_multi_stream

(

)

[virtual]

Returns:

true if the class is multistream, false if it's singlestream.

Implements BaseInputVideo.

Definition at line 89 of file HardwareSingleVideoSource.cpp.

---

Member Data Documentation

CvCapture* HardwareSingleVideoSource::_cam_input [private]

Definition at line 71 of file HardwareSingleVideoSource.hh.

Referenced by get_next_frame(), init_device(), and ~HardwareSingleVideoSource().

int HardwareSingleVideoSource::_camera_num [private]

Definition at line 68 of file HardwareSingleVideoSource.hh.

Referenced by init_device().

bool HardwareSingleVideoSource::_initialized [private]

Definition at line 65 of file HardwareSingleVideoSource.hh.

Referenced by get_next_frame(), HardwareSingleVideoSource(), init_device(), and ~HardwareSingleVideoSource().

---

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

• HardwareSingleVideoSource.hh
• HardwareSingleVideoSource.cpp

---