Example for grabberDual (grabber_basic)

Instantiates grabberDual device implemented by ServerGrabber. More...

Collaboration diagram for Example for grabberDual (grabber_basic):

Instantiates grabberDual device implemented by ServerGrabber.

# start up a network wrapper around a fakeFrameGrabber
device grabberDual
subdevice fakeFrameGrabber
width 640
height 480
period 0.25
name /grabber

If this text is saved in a file called grabber_basic.ini then the device can be created by doing:

yarpdev --file grabber_basic.ini

Of course, the configuration could be passed just as command line options, or as a yarp::os::Property object in a program:

Property p;
p.fromConfigFile("grabber_basic.ini");
// of course you could construct the Property object on-the-fly
PolyDriver dev;
dev.open(p);
if (dev.isValid()) { /* use the device via view method */ }

Here is a list of properties checked when starting up a device based on this configuration file. Note that which properties are checked can depend on whether other properties are present. In some cases properties can also vary between operating systems. So this is just an example

PROPERTY	DESCRIPTION	DEFAULT
device
period	refresh period(in ms) of the broadcasted values through yarp ports
subdevice	name of the subdevice to use as a data source
left_config
right_config
twoCameras	if true ServerGrabber will open and handle two devices, if false only one
split	set 'true' to split the streaming on two different ports
capabilities	two capabilities supported, COLOR and RAW respectively for rgb and raw streaming
no_drop	if present, use strict policy for sending data
stamp	if present, add timestamps to data
single_threaded	if present, operate in single threaded mode
name	name of port to send data on	/grabber

See also

ServerGrabber