CameraDriverV4L1 Class Reference

description of CameraDriverV4L1 More...

#include <CameraDriverV4L1.h>

Inheritance diagram for CameraDriverV4L1:

[legend]

Detailed Description

description of CameraDriverV4L1

Definition at line 17 of file CameraDriverV4L1.h.

List of all members.

Public Member Functions
	CameraDriverV4L1 (const std::string &name)
	~CameraDriverV4L1 ()
virtual std::string	getClassName () const
	Returns the name of the class (aka its type).
virtual void	getImageSources (std::map< std::string, DataSource * > &sources)
virtual unsigned int	nextTimestamp ()
	Returns the simulator time of the next data segment.
virtual const std::string &	nextName ()
	Returns a descriptive name of the next data segment for user feedback (e.g. a filename for logged data).
virtual unsigned int	getData (const char *&payload, unsigned int &payloadSize, unsigned int &timestamp, std::string &name)
virtual void	setDataSourceThread (LoadDataThread *th)
virtual void	plistValueChanged (const plist::PrimitiveBase &pl)
	watches path, triggers a close() and re-open() if it changes
Public Attributes
plist::Primitive< std::string >	path
plist::Primitive< unsigned int >	resolution
plist::Primitive< int >	layer
	Controls the resolution layer at which the image should be processed. 0 indicates "automatic" mode (picks layer closest to image's resolution), positive numbers indicate the resolution layer directly. Negative values are relative to the number of layers marked available by the vision setup, so that typically -1 would correspond to the "double" layer, and -2 would correspond to the "full" layer.
plist::Primitive< bool >	autobright
Protected Member Functions
void	close_cam ()
void	open_cam ()
void	get_cam_info ()
void	set_cam_info ()
void	set_resolution ()
void	auto_bright ()
void	interleave_yuv_down ()
void	interleave_yuv_up ()
size_t	getWidth () const
size_t	getHeight () const
size_t	getBufferSize () const
Protected Attributes
int	camfd
size_t	img_size
struct video_capability	vid_caps
struct video_window	vid_win
struct video_picture	vid_pic
unsigned int	frameCount
bool	isYUVMode
bool	blocking
std::vector< unsigned char >	curBuf
	the buffer to write the image into
std::vector< unsigned char >	lastBuf
	the buffer we returned last time (might still be in use while writing curBuf)
std::vector< unsigned char >	tmpBuf
	used during interleave_yuv_up(), swapped back and forth with curBuf
Thread::Lock	lock
Static Protected Attributes
static const size_t	HEADER_SIZE
Static Private Attributes
static const std::string	autoRegisterCameraDriverV4L1
	holds the class name, set via registration with the DeviceDriver registry

Constructor & Destructor Documentation

CameraDriverV4L1 ( const std::string & name ) [explicit]

Definition at line 19 of file CameraDriverV4L1.h.

~CameraDriverV4L1 ( )

Definition at line 33 of file CameraDriverV4L1.h.

Member Function Documentation

void auto_bright ( ) [protected]

void close_cam ( ) [protected]

void get_cam_info ( ) [protected]

size_t getBufferSize ( ) const [protected]

Definition at line 69 of file CameraDriverV4L1.h.

virtual std::string getClassName ( ) const [virtual]

Returns the name of the class (aka its type).

Suggested implementation is to declare a static string member, set it to the result of calling the registry's registerType, and then return that member here

Implements DeviceDriver.

Definition at line 38 of file CameraDriverV4L1.h.

virtual unsigned int getData	(	const char *&	payload,
		unsigned int &	payloadSize,
		unsigned int &	timestamp,
		std::string &	name
	)			`[virtual]`

size_t getHeight ( ) const [protected]

Definition at line 68 of file CameraDriverV4L1.h.

virtual void getImageSources ( std::map< std::string, DataSource * > & sources ) [virtual]

Reimplemented from DeviceDriver.

Definition at line 40 of file CameraDriverV4L1.h.

size_t getWidth ( ) const [protected]

Definition at line 67 of file CameraDriverV4L1.h.

void interleave_yuv_down ( ) [protected]

void interleave_yuv_up ( ) [protected]

virtual const std::string& nextName ( ) [virtual]

Returns a descriptive name of the next data segment for user feedback (e.g. a filename for logged data).

Just use your class name if you don't have a useful name for individual samples.

Implements DataSource.

Definition at line 45 of file CameraDriverV4L1.h.

virtual unsigned int nextTimestamp ( ) [virtual]

Returns the simulator time of the next data segment.

Should be in the future if nothing new since last data segment, otherwise should be the timestamp of the most recent data segment (older segments are skipped), return -1U if there is no more data

Implements DataSource.

Definition at line 44 of file CameraDriverV4L1.h.

void open_cam ( ) [protected]

virtual void plistValueChanged ( const plist::PrimitiveBase & pl ) [virtual]

watches path, triggers a close() and re-open() if it changes

Implements PrimitiveListener.

void set_cam_info ( ) [protected]

void set_resolution ( ) [protected]

virtual void setDataSourceThread ( LoadDataThread * th ) [virtual]

Member Data Documentation

plist::Primitive<bool> autobright

Definition at line 55 of file CameraDriverV4L1.h.

Referenced by CameraDriverV4L1().

const std::string autoRegisterCameraDriverV4L1 [static, private]

holds the class name, set via registration with the DeviceDriver registry

Definition at line 100 of file CameraDriverV4L1.h.

Referenced by getClassName().

bool blocking [protected]

Definition at line 80 of file CameraDriverV4L1.h.

int camfd [protected]

Definition at line 73 of file CameraDriverV4L1.h.

std::vector<unsigned char> curBuf [protected]

the buffer to write the image into

Definition at line 82 of file CameraDriverV4L1.h.

unsigned int frameCount [protected]

Definition at line 78 of file CameraDriverV4L1.h.

const size_t HEADER_SIZE [static, protected]

Definition at line 71 of file CameraDriverV4L1.h.

Referenced by getBufferSize().

size_t img_size [protected]

Definition at line 74 of file CameraDriverV4L1.h.

bool isYUVMode [protected]

Definition at line 79 of file CameraDriverV4L1.h.

std::vector<unsigned char> lastBuf [protected]

the buffer we returned last time (might still be in use while writing curBuf)

Definition at line 83 of file CameraDriverV4L1.h.

plist::Primitive<int> layer

Controls the resolution layer at which the image should be processed.
0 indicates "automatic" mode (picks layer closest to image's resolution), positive numbers indicate the resolution layer directly.
Negative values are relative to the number of layers marked available by the vision setup, so that typically -1 would correspond to the "double" layer, and -2 would correspond to the "full" layer.

Definition at line 54 of file CameraDriverV4L1.h.

Referenced by CameraDriverV4L1().

Thread::Lock lock [protected]

Definition at line 85 of file CameraDriverV4L1.h.

plist::Primitive<std::string> path

Definition at line 52 of file CameraDriverV4L1.h.

Referenced by CameraDriverV4L1(), and ~CameraDriverV4L1().

plist::Primitive<unsigned int> resolution

Definition at line 53 of file CameraDriverV4L1.h.

Referenced by CameraDriverV4L1(), getBufferSize(), getHeight(), getWidth(), and ~CameraDriverV4L1().