YARP
Yet Another Robot Platform
V4L_camera Class Reference

#include <usbCamera/linux/V4L_camera.h>

+ Inheritance diagram for V4L_camera:

Public Member Functions

 V4L_camera ()
 
bool open (yarp::os::Searchable &config) override
 open device More...
 
bool close () override
 close device More...
 
yarp::os::Stamp getLastInputStamp () override
 Return the time stamp relative to the last acquisition. More...
 
bool getImage (yarp::sig::ImageOf< yarp::sig::PixelRgb > &image) override
 
bool getImage (yarp::sig::ImageOf< yarp::sig::PixelMono > &image) override
 
int height () const override
 Return the height of each frame. More...
 
int width () const override
 Return the width of each frame. More...
 
int getRgbHeight () override
 Return the height of each frame. More...
 
int getRgbWidth () override
 Return the width of each frame. More...
 
bool getRgbSupportedConfigurations (yarp::sig::VectorOf< yarp::dev::CameraConfig > &configurations) override
 Get the possible configurations of the camera. More...
 
bool getRgbResolution (int &width, int &height) override
 Get the resolution of the rgb image from the camera. More...
 
bool setRgbResolution (int width, int height) override
 Set the resolution of the rgb image from the camera. More...
 
bool getRgbFOV (double &horizontalFov, double &verticalFov) override
 Get the field of view (FOV) of the rgb camera. More...
 
bool setRgbFOV (double horizontalFov, double verticalFov) override
 Set the field of view (FOV) of the rgb camera. More...
 
bool getRgbIntrinsicParam (yarp::os::Property &intrinsic) override
 Get the intrinsic parameters of the rgb camera. More...
 
bool getRgbMirroring (bool &mirror) override
 Get the mirroring setting of the sensor. More...
 
bool setRgbMirroring (bool mirror) override
 Set the mirroring setting of the sensor. More...
 
bool getCameraDescription (CameraDescriptor *camera) override
 Get a basic description of the camera hw. More...
 
bool hasFeature (int feature, bool *hasFeature) override
 Check if camera has the requested feature (saturation, brightness ... More...
 
bool setFeature (int feature, double value) override
 Set the requested feature to a value (saturation, brightness ... More...
 
bool getFeature (int feature, double *value) override
 Get the current value for the requested feature. More...
 
bool setFeature (int feature, double value1, double value2) override
 Set the requested feature to a value using 2 params (like white balance) More...
 
bool getFeature (int feature, double *value1, double *value2) override
 Get the current value for the requested feature. More...
 
bool hasOnOff (int feature, bool *_hasOnOff) override
 Check if the camera has the ability to turn on/off the requested feature. More...
 
bool setActive (int feature, bool onoff) override
 Set the requested feature on or off. More...
 
bool getActive (int feature, bool *_isActive) override
 Get the current status of the feature, on or off. More...
 
bool hasAuto (int feature, bool *_hasAuto) override
 Check if the requested feature has the 'auto' mode. More...
 
bool hasManual (int feature, bool *_hasManual) override
 Check if the requested feature has the 'manual' mode. More...
 
bool hasOnePush (int feature, bool *_hasOnePush) override
 Check if the requested feature has the 'onePush' mode. More...
 
bool setMode (int feature, FeatureMode mode) override
 Set the requested mode for the feature. More...
 
bool getMode (int feature, FeatureMode *mode) override
 Get the current mode for the feature. More...
 
bool setOnePush (int feature) override
 Set the requested feature to a value (saturation, brightness ... More...
 
- Public Member Functions inherited from yarp::dev::DeviceDriver
 ~DeviceDriver () override=default
 Destructor. More...
 
template<class T >
bool view (T *&x)
 Get an interface to the device driver. More...
 
virtual DeviceDrivergetImplementation ()
 Some drivers are bureaucrats, pointing at others. More...
 
- Public Member Functions inherited from yarp::os::IConfig
virtual ~IConfig ()
 Destructor. More...
 
virtual bool configure (Searchable &config)
 Change online parameters. More...
 
- Public Member Functions inherited from yarp::dev::IFrameGrabberOf< ImageType >
virtual bool getImage (ImageType &image)=0
 Get an image from the frame grabber. More...
 
virtual bool getImageCrop (cropType_id_t cropType, yarp::sig::VectorOf< std::pair< int, int >> vertices, ImageType &image)
 Get a crop of the image from the frame grabber. More...
 
- Public Member Functions inherited from yarp::dev::IFrameGrabberImageBase
virtual ~IFrameGrabberImageBase ()
 Destructor. More...
 
- Public Member Functions inherited from yarp::dev::IFrameGrabberControls
virtual ~IFrameGrabberControls ()
 Destructor. More...
 
virtual bool setBrightness (double v)
 Set the brightness. More...
 
virtual bool setExposure (double v)
 Set the exposure. More...
 
virtual bool setSharpness (double v)
 Set the sharpness. More...
 
virtual bool setWhiteBalance (double blue, double red)
 Set the white balance for the frame grabber. More...
 
virtual bool setHue (double v)
 Set the hue. More...
 
virtual bool setSaturation (double v)
 Set the saturation. More...
 
virtual bool setGamma (double v)
 Set the gamma. More...
 
virtual bool setShutter (double v)
 Set the shutter parameter. More...
 
virtual bool setGain (double v)
 Set the gain. More...
 
virtual bool setIris (double v)
 Set the iris. More...
 
virtual double getBrightness ()
 Read the brightness parameter. More...
 
virtual double getExposure ()
 Read the exposure parameter. More...
 
virtual double getSharpness ()
 Read the sharpness parameter. More...
 
virtual bool getWhiteBalance (double &blue, double &red)
 Read the white balance parameters. More...
 
virtual double getHue ()
 Read the hue parameter. More...
 
virtual double getSaturation ()
 Read the saturation parameter. More...
 
virtual double getGamma ()
 Read the gamma parameter. More...
 
virtual double getShutter ()
 Read the shutter parameter. More...
 
virtual double getGain ()
 Read the gain parameter. More...
 
virtual double getIris ()
 Read the iris parameter. More...
 
std::string busType2String (BusType type)
 
FeatureMode toFeatureMode (bool _auto)
 
- Public Member Functions inherited from yarp::dev::IPreciselyTimed
virtual ~IPreciselyTimed ()
 
- Public Member Functions inherited from yarp::os::PeriodicThread
 PeriodicThread (double period, ShouldUseSystemClock useSystemClock=ShouldUseSystemClock::No, PeriodicThreadClock clockAccuracy=PeriodicThreadClock::Relative)
 Constructor. More...
 
 PeriodicThread (double period, PeriodicThreadClock clockAccuracy)
 Constructor. More...
 
virtual ~PeriodicThread ()
 
bool start ()
 Call this to start the thread. More...
 
void step ()
 Call this to "step" the thread rather than starting it. More...
 
void stop ()
 Call this to stop the thread, this call blocks until the thread is terminated (and releaseThread() called). More...
 
void askToStop ()
 Stop the thread. More...
 
bool isRunning () const
 Returns true when the thread is started, false otherwise. More...
 
bool isSuspended () const
 Returns true when the thread is suspended, false otherwise. More...
 
bool setPeriod (double period)
 Set the (new) period of the thread. More...
 
double getPeriod () const
 Return the current period of the thread. More...
 
void suspend ()
 Suspend the thread, the thread keeps running by doLoop is never executed. More...
 
void resume ()
 Resume the thread if previously suspended. More...
 
void resetStat ()
 Reset thread statistics. More...
 
double getEstimatedPeriod () const
 Return estimated period since last reset. More...
 
void getEstimatedPeriod (double &av, double &std) const
 Return estimated period since last reset. More...
 
unsigned int getIterations () const
 Return the number of iterations performed since last reset. More...
 
double getEstimatedUsed () const
 Return the estimated duration of the run() function since last reset. More...
 
void getEstimatedUsed (double &av, double &std) const
 Return estimated duration of the run() function since last reset. More...
 
int setPriority (int priority, int policy=-1)
 Set the priority and scheduling policy of the thread, if the OS supports that. More...
 
int getPriority () const
 Query the current priority of the thread, if the OS supports that. More...
 
int getPolicy () const
 Query the current scheduling policy of the thread, if the OS supports that. More...
 
- Public Member Functions inherited from yarp::dev::IRgbVisualParams
virtual ~IRgbVisualParams ()
 

Additional Inherited Members

- Protected Member Functions inherited from yarp::os::PeriodicThread
virtual void beforeStart ()
 Called just before a new thread starts. More...
 
virtual void afterStart (bool success)
 Called just after a new thread starts (or fails to start), this is executed by the same thread that calls start(). More...
 

Detailed Description

Definition at line 129 of file V4L_camera.h.

Constructor & Destructor Documentation

◆ V4L_camera()

V4L_camera::V4L_camera ( )

Definition at line 87 of file V4L_camera.cpp.

Member Function Documentation

◆ close()

bool V4L_camera::close ( )
overridevirtual

close device

Reimplemented from yarp::dev::DeviceDriver.

Definition at line 869 of file V4L_camera.cpp.

◆ getActive()

bool V4L_camera::getActive ( int  feature,
bool *  isActive 
)
overridevirtual

Get the current status of the feature, on or off.

Parameters
featurethe identifier of the feature to check
isActiveflag true if the feature is active, false otherwise
Returns
returns true if success, false otherwise (e.g. the interface is not implemented)

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1793 of file V4L_camera.cpp.

◆ getCameraDescription()

bool V4L_camera::getCameraDescription ( CameraDescriptor camera)
overridevirtual

Get a basic description of the camera hw.

This is mainly used to determine the HW bus type in order to choose the corresponding interface for advanced controls.

Parameters
devicereturns an identifier for the bus
Returns
returns true if success, false otherwise (e.g. the interface is not implemented)

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1614 of file V4L_camera.cpp.

◆ getFeature() [1/2]

bool V4L_camera::getFeature ( int  feature,
double *  value 
)
overridevirtual

Get the current value for the requested feature.

Parameters
featurethe identifier of the feature to read
valuepointer to current value of the feature, from 0 to 1 expressed as a percentage
Returns
returns true on success, false on failure.

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1667 of file V4L_camera.cpp.

◆ getFeature() [2/2]

bool V4L_camera::getFeature ( int  feature,
double *  value1,
double *  value2 
)
overridevirtual

Get the current value for the requested feature.

Parameters
featurethe identifier of the feaature to read
value1returns the current value of the feature, from 0 to 1 expressed as a percentage
value2returns the current value of the feature, from 0 to 1 expressed as a percentage
Returns
returns true on success, false on failure.

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1705 of file V4L_camera.cpp.

◆ getImage() [1/2]

bool V4L_camera::getImage ( yarp::sig::ImageOf< yarp::sig::PixelMono > &  image)
override

Definition at line 913 of file V4L_camera.cpp.

◆ getImage() [2/2]

bool V4L_camera::getImage ( yarp::sig::ImageOf< yarp::sig::PixelRgb > &  image)
override

Definition at line 888 of file V4L_camera.cpp.

◆ getLastInputStamp()

yarp::os::Stamp V4L_camera::getLastInputStamp ( )
overridevirtual

Return the time stamp relative to the last acquisition.

Implements yarp::dev::IPreciselyTimed.

Definition at line 141 of file V4L_camera.cpp.

◆ getMode()

bool V4L_camera::getMode ( int  feature,
FeatureMode mode 
)
overridevirtual

Get the current mode for the feature.

Parameters
featurethe identifier of the feature to change
hasAutoflag true if the feature is has 'auto' mode, false otherwise
Returns
returns true if success, false otherwise (e.g. the interface is not implemented)

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1954 of file V4L_camera.cpp.

◆ getRgbFOV()

bool V4L_camera::getRgbFOV ( double &  horizontalFov,
double &  verticalFov 
)
overridevirtual

Get the field of view (FOV) of the rgb camera.

Parameters
horizontalFovwill return the value of the horizontal fov in degrees
verticalFovwill return the value of the vertical fov in degrees
Returns
true on success

Implements yarp::dev::IRgbVisualParams.

Definition at line 335 of file V4L_camera.cpp.

◆ getRgbHeight()

int V4L_camera::getRgbHeight ( )
overridevirtual

Return the height of each frame.

Returns
rgb image height

Implements yarp::dev::IRgbVisualParams.

Definition at line 300 of file V4L_camera.cpp.

◆ getRgbIntrinsicParam()

bool V4L_camera::getRgbIntrinsicParam ( yarp::os::Property intrinsic)
overridevirtual

Get the intrinsic parameters of the rgb camera.

Parameters
intrinsicreturn a Property containing intrinsic parameters of the optical model of the camera.
Returns
true if success

The yarp::os::Property describing the intrinsic parameters is expected to be in the form:

Parameter name SubParameter Type Units Default Value Required Description Notes
physFocalLength - double m - Yes Physical focal length of the lens in meters
focalLengthX - double pixel - Yes Horizontal component of the focal length as a multiple of pixel width
focalLengthY - double pixel - Yes Vertical component of the focal length as a multiple of pixel height
principalPointX - double pixel - Yes X coordinate of the principal point
principalPointY - double pixel - Yes Y coordinate of the principal point
rectificationMatrix - 4x4 double matrix - - Yes Matrix that describes the lens' distortion
distortionModel - string - - Yes Reference to group of parameters describing the distortion model of the camera, example 'cameraDistortionModelGroup' This is another group's name to be searched for in the config file
cameraDistortionModelGroup
name string - - Yes Name of the distortion model, see notes right now only 'plumb_bob' is supported
k1 double - - Yes Radial distortion coefficient of the lens
k2 double - - Yes Radial distortion coefficient of the lens
k3 double - - Yes Radial distortion coefficient of the lens
t1 double - - Yes Tangential distortion of the lens
t2 double - - Yes Tangential distortion of the lens

Implements yarp::dev::IRgbVisualParams.

Definition at line 348 of file V4L_camera.cpp.

◆ getRgbMirroring()

bool V4L_camera::getRgbMirroring ( bool &  mirror)
overridevirtual

Get the mirroring setting of the sensor.

Parameters
mirrortrue if image is mirrored, false otherwise
Returns
true if success

Implements yarp::dev::IRgbVisualParams.

Definition at line 354 of file V4L_camera.cpp.

◆ getRgbResolution()

bool V4L_camera::getRgbResolution ( int &  width,
int &  height 
)
overridevirtual

Get the resolution of the rgb image from the camera.

Parameters
widthimage width
heightimage height
Returns
true on success

Reimplemented from yarp::dev::IRgbVisualParams.

Definition at line 315 of file V4L_camera.cpp.

◆ getRgbSupportedConfigurations()

bool V4L_camera::getRgbSupportedConfigurations ( yarp::sig::VectorOf< yarp::dev::CameraConfig > &  configurations)
overridevirtual

Get the possible configurations of the camera.

Parameters
configurationslist of camera supported configurations as CameraConfig type
Returns
true on success

Reimplemented from yarp::dev::IRgbVisualParams.

Definition at line 310 of file V4L_camera.cpp.

◆ getRgbWidth()

int V4L_camera::getRgbWidth ( )
overridevirtual

Return the width of each frame.

Returns
rgb image width

Implements yarp::dev::IRgbVisualParams.

Definition at line 305 of file V4L_camera.cpp.

◆ hasAuto()

bool V4L_camera::hasAuto ( int  feature,
bool *  hasAuto 
)
overridevirtual

Check if the requested feature has the 'auto' mode.

Parameters
featurethe identifier of the feature to check
hasAutoflag true if the feature is has 'auto' mode, false otherwise
Returns
returns true if success, false otherwise (e.g. the interface is not implemented)

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1826 of file V4L_camera.cpp.

◆ hasFeature()

bool V4L_camera::hasFeature ( int  feature,
bool *  hasFeature 
)
overridevirtual

Check if camera has the requested feature (saturation, brightness ...

)

Parameters
featurethe identifier of the feature to check
hasFeatureflag value: true if the feature is present, false otherwise
Returns
returns true if success, false otherwise (e.g. the interface is not implemented)

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1621 of file V4L_camera.cpp.

◆ hasManual()

bool V4L_camera::hasManual ( int  feature,
bool *  hasManual 
)
overridevirtual

Check if the requested feature has the 'manual' mode.

Parameters
featurethe identifier of the feature to check
hasAutoflag true if the feature is has 'manual' mode, false otherwise
Returns
returns true if success, false otherwise (e.g. the interface is not implemented)

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1856 of file V4L_camera.cpp.

◆ hasOnePush()

bool V4L_camera::hasOnePush ( int  feature,
bool *  hasOnePush 
)
overridevirtual

Check if the requested feature has the 'onePush' mode.

Parameters
featurethe identifier of the feature to check
hasAutoflag true if the feature is has 'onePush' mode, false otherwise
Returns
returns true if success, false otherwise (e.g. the interface is not implemented)

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1870 of file V4L_camera.cpp.

◆ hasOnOff()

bool V4L_camera::hasOnOff ( int  feature,
bool *  HasOnOff 
)
overridevirtual

Check if the camera has the ability to turn on/off the requested feature.

Parameters
featurethe identifier of the feature to change
hasOnOffflag true if this feature can be turned on/off, false otherwise.
Returns
returns true if success, false otherwise (e.g. the interface is not implemented)

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1715 of file V4L_camera.cpp.

◆ height()

int V4L_camera::height ( ) const
overridevirtual

Return the height of each frame.

Returns
image height

Implements yarp::dev::IFrameGrabberImageBase.

Definition at line 935 of file V4L_camera.cpp.

◆ open()

bool V4L_camera::open ( yarp::os::Searchable config)
overridevirtual

open device

Reimplemented from yarp::dev::DeviceDriver.

Definition at line 221 of file V4L_camera.cpp.

◆ setActive()

bool V4L_camera::setActive ( int  feature,
bool  onoff 
)
overridevirtual

Set the requested feature on or off.

Parameters
featurethe identifier of the feature to change
onofftrue to activate, off to deactivate the feature
Returns
returns true on success, false on failure.

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1743 of file V4L_camera.cpp.

◆ setFeature() [1/2]

bool V4L_camera::setFeature ( int  feature,
double  value 
)
overridevirtual

Set the requested feature to a value (saturation, brightness ...

)

Parameters
featurethe identifier of the feature to change
valuenew value of the feature, range from 0 to 1 expressed as a percentage
Returns
returns true if success, false otherwise (e.g. the interface is not implemented)

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1648 of file V4L_camera.cpp.

◆ setFeature() [2/2]

bool V4L_camera::setFeature ( int  feature,
double  value1,
double  value2 
)
overridevirtual

Set the requested feature to a value using 2 params (like white balance)

Parameters
featurethe identifier of the feature to change
value1first param, from 0 to 1 expressed as a percentage
value2second param, from 0 to 1 expressed as a percentage
Returns
returns true if success, false otherwise (e.g. the interface is not implemented)

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1692 of file V4L_camera.cpp.

◆ setMode()

bool V4L_camera::setMode ( int  feature,
FeatureMode  mode 
)
overridevirtual

Set the requested mode for the feature.

Parameters
featurethe identifier of the feature to change
auto_onofftrue to activate 'auto' mode, false to activate 'manual' mode
Returns
returns true on success, false on failure.

Implements yarp::dev::IFrameGrabberControls.

Definition at line 1885 of file V4L_camera.cpp.

◆ setOnePush()

bool V4L_camera::setOnePush ( int  feature)
overridevirtual

Set the requested feature to a value (saturation, brightness ...

)

Parameters
featurethe identifier of the feature to change
valuenew value of the feature, from 0 to 1 as a percentage of param range
Returns
returns true on success, false on failure.

Implements yarp::dev::IFrameGrabberControls.

Definition at line 2021 of file V4L_camera.cpp.

◆ setRgbFOV()

bool V4L_camera::setRgbFOV ( double  horizontalFov,
double  verticalFov 
)
overridevirtual

Set the field of view (FOV) of the rgb camera.

Parameters
horizontalFovwill set the value of the horizontal fov in degrees
verticalFovwill set the value of the vertical fov in degrees
Returns
true on success

Implements yarp::dev::IRgbVisualParams.

Definition at line 342 of file V4L_camera.cpp.

◆ setRgbMirroring()

bool V4L_camera::setRgbMirroring ( bool  mirror)
overridevirtual

Set the mirroring setting of the sensor.

Parameters
mirrortrue if image should be mirrored, false otherwise
Returns
true if success

Implements yarp::dev::IRgbVisualParams.

Definition at line 361 of file V4L_camera.cpp.

◆ setRgbResolution()

bool V4L_camera::setRgbResolution ( int  width,
int  height 
)
overridevirtual

Set the resolution of the rgb image from the camera.

Parameters
widthimage width
heightimage height
Returns
true on success

Implements yarp::dev::IRgbVisualParams.

Definition at line 322 of file V4L_camera.cpp.

◆ width()

int V4L_camera::width ( ) const
overridevirtual

Return the width of each frame.

Returns
image width

Implements yarp::dev::IFrameGrabberImageBase.

Definition at line 948 of file V4L_camera.cpp.


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