#include <v4lcontrol.h>
It can be used in parallel to a v4lbuffer object to control and query all parameters supported. Several abstraction levels are supported. On the highest there are individual member functions for various fixed parameters. The next level supports querying and setting/getting values for all parameters supported by the driver. Finally, low-level access using V4L2 structs is supported as well.
Definition at line 64 of file v4lcontrol.h.
Public Member Functions | |
| V4LControl (int fd, bool report=true) | |
| V4LControl (const std::string &name, bool report=true) | |
| int | getFile (void) const |
| const std::string & | getDevice (void) const |
| void | setReportErrors (bool report) |
| bool | getReportErrors (void) const |
HighLevel | |
High level interface to set specific parameters without much hassle.
These might fail if the parameter is not supported by the device and do not throw exceptions. Moreover ranges of parameter values are abstracted to lie within the intervall [0,1]. If you want to have more control, use the lower level interface described in Generic . | |
| void | exposure (int) |
| int | exposure (void) |
| void | autoexposure (bool) |
| bool | autoexposure () |
| void | gain (double) |
| double | gain (void) |
| void | autogain (bool) |
| bool | autogain (void) |
| void | brightness (double) |
| double | brightness (void) |
| void | contrast (double) |
| double | contrast (void) |
| void | saturation (double) |
| double | saturation (void) |
Generic | |
generic high level interface abstracting the v4l2 structs | |
| unsigned int | getId (const std::string &name) const |
| std::string | getName (unsigned int id) const |
|
std::vector < unsigned int > | supportedParameters (void) const |
|
std::vector < std::string > | supportedParameterNames (void) const |
| bool | isSupported (const std::string &name) const |
| void | set (const std::string &name, int value) |
| int | get (const std::string &name) |
| int | type (const std::string &name) |
|
std::map< unsigned int, std::string > | menuValues (const std::string &name) |
| int | defaultValue (const std::string &name) |
| int | min (const std::string &name) |
| int | max (const std::string &name) |
| int | step (const std::string &name) |
| bool | isSupported (unsigned int id) const |
| void | set (unsigned int id, int value) |
| int | get (unsigned int id) |
| int | type (unsigned int id) |
|
std::map< unsigned int, std::string > | menuValues (unsigned int id) const |
| int | defaultValue (unsigned int id) const |
| int | min (unsigned int id) const |
| int | max (unsigned int id) const |
| int | step (unsigned int id) const |
LowLevel | |
low level interface using v4l2 structs | |
| int | getQueryStruct (v4l2_queryctrl &query) const |
| void | getMenuStruct (unsigned int id, std::vector< v4l2_querymenu > &menu) const |
| int | setControlStruct (v4l2_control &value) |
| int | getControlStruct (v4l2_control &value) const |
Protected Member Functions | |
| void | queryControls (void) |
Protected Attributes | |
| int | device |
| std::string | deviceName |
| struct v4l2_control | control |
| bool | reportErrors |
|
std::map < std::string, unsigned int > | controlNames |
|
std::map< unsigned int, v4l2_queryctrl > | controlData |
|
std::map< unsigned int, std::vector < v4l2_querymenu > > | menuData |
| int CVD::V4LControl::getFile | ( | void | ) | const [inline] |
return file descriptor for the opened device
Definition at line 158 of file v4lcontrol.h.
References device.
| const std::string& CVD::V4LControl::getDevice | ( | void | ) | const [inline] |
return file name of the opened device
Definition at line 161 of file v4lcontrol.h.
References deviceName.
| void CVD::V4LControl::setReportErrors | ( | bool | report | ) | [inline] |
1.5.3