CameraV4L2 Class Reference

Inheritance diagram for CameraV4L2:

List of all members.

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Detailed Description

Driver for capturing frames from V4L2 compatible device.

Definition at line 287 of file camerav4l2.cpp.

Public Member Functions
	CameraV4L2 (ConfigFile *cf, int section)
	Constructor.
virtual int	Setup ()
	Setup/shutdown routines.
virtual int	Shutdown ()
	Setup/shutdown routines.
Private Member Functions
virtual void	Main ()
	Main function for device thread.
int	HandleRequests ()
	Process requests.
void	WriteData ()
	Update the device data (the data going back to the client).
int	selectNorm (const char *snorm)
	some parsing functions, to change string to apropriate settings
int	selectFormat (const char *sformat)
int	selectField (const char *sfield)
int	tryPixelSettings (FRAMEGRABBER2 *fg, int w, int h, unsigned int fmt, enum v4l2_field fld)
int	handleCommand (char *cmd, int len)
	handle command with optional reply
int	handleCommand (char *cmd, int len, char *reply, int rlen)
Private Attributes
const char *	device
	Video device.
const char *	sourceCh
	Input source. If sourceCh==0, then source matters.
int	source
v4l2_std_id	norm
	The signal norm: VIDEO_NORM_PAL or VIDEO_NORM_NTSC.
int	depth
	Pixel depth.
int	width
	Image dimensions.
int	height
enum v4l2_field	fieldType
	field type
unsigned int	v4l2_type_id
int	flip_rb
int	showFPS
FRAMEGRABBER2 *	fg
	Frame grabber interface.
uint32_t	tsec
	Capture timestamp.
uint32_t	tusec
player_camera_data_t	data
	Data to send to server.
int	numOfCtls
const char **	ctlNames
double *	ctlVals
int	back_source
	backup for rollback, when failed to set new parameters
v4l2_std_id	back_norm
int	back_depth
int	back_width
int	back_height
enum v4l2_field	back_fieldType
unsigned int	back_v4l2_type_id

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Member Function Documentation

int CameraV4L2::handleCommand (  char *  cmd, int  len, char *  reply, int  rlen )  [private]

handle command and generate reply Parameters: cmd  command in text representation len  length of cmd (including '') reply  buffer for reply rlen  length of buffer for reply Returns: 0 ok, -1 failure Definition at line 1109 of file camerav4l2.cpp.

int CameraV4L2::handleCommand (  char *  cmd, int  len )  [private]

handle command with optional reply handle command without reply Parameters: cmd  command in text representation len  length of cmd (including '') Returns: 0 ok, -1 failure Definition at line 985 of file camerav4l2.cpp.

int CameraV4L2::HandleRequests (   )  [private]

Process requests. Process incoming requests Definition at line 930 of file camerav4l2.cpp.

int CameraV4L2::selectField (  const char *  sfield  )  [private]

Apply setting according to field value read from config or request; changed are: this->fieldType Parameters: sfield  one of values mentioned in config for "field" setting Returns: 0 on success Definition at line 676 of file camerav4l2.cpp.

int CameraV4L2::selectFormat (  const char *  sformat  )  [private]

Apply setting according to mode value from config or request; changed are: this->data.format, this->depth, this->v4l2_type_id Parameters: sformat  one of values mentioned in config for "mode" setting Returns: 0 on success Definition at line 652 of file camerav4l2.cpp.

int CameraV4L2::selectNorm (  const char *  snorm  )  [private]

some parsing functions, to change string to apropriate settings Apply setting according to snorm value read from config or request; changed are: this->norm, this->width, this->height Parameters: snorm  one of values mentioned in config for "norm" setting Returns: 0 on success Definition at line 628 of file camerav4l2.cpp.

int CameraV4L2::tryPixelSettings (  FRAMEGRABBER2 *  fg, int  w, int  h, unsigned int  fmt, enum v4l2_field  fld )  [private]

try given parameters, and back to previous when failed and return !=0 on failure Parameters: fg  Handler w  width h  height fmt  v4l2_type_id fld  fieldType Returns: 0 ok, -1 bad Definition at line 910 of file camerav4l2.cpp.

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

• camerav4l2.cpp

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