Using cameras and blobfinders
From The Player Project
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== Creating a Configuration File == | == Creating a Configuration File == | ||
Revision as of 03:28, 31 January 2011
Creating a Configuration File
The first step to using your camera and blobfinder is to identify which drivers support your devices, and create a configuration file. To find a driver that supports your camera, see the list of Available Drivers. Once you find a driver that supports your camera and/or blobfinder, you will need to create a configuration file. For more information on writing configuration files, see Writing configuration files.
Testing your camera
Player comes with a client program called "playercam" that subscribes to camera interfaces and displays the available image and blobfinder data. To use it, start Player in a terminal window with your configuration file:
$ player cameraconfig.cfg
And in a second terminal window, run the playercam utility.
$ playercam
Playercam accepts a number of different command line options to control which Player server and interfaces to connect to. Type "playercam -help" to see the usage.
playercam - camera test utility for a player camera USAGE: playercam [options] Where [options] can be: -help : print this message. -h <hostname> : host that is running player -p <port> : the port number of the host -i <index> : the index of the camera -b <index> : the index of the blobfinder -r <rate> : the refresh rate of the video -t <transport> : transport to use (either "tcp" or "udp") Currently supports RGB888 and 8/16-bit grey scale images.
PlayerC++ client program
The following program is available in the Player source tree, at examples/libplayerc++/camera.cc. This program subscribes to a camera interface from a Player server using the PlayerC++ CameraProxy, and uses the CameraProxy to save images from the server to disk. For all available methods in the CameraProxy, see the CameraProxy documentation.
#include <libplayerc++/playerc++.h>
#include "args.h"
#include <iostream>
int main(int argc, char** argv)
{
parse_args(argc, argv);
try
{
PlayerCc::PlayerClient client(gHostname, gPort);
PlayerCc::CameraProxy cp(&client, gIndex);
for (uint i=0; i<10; ++i)
{
client.Read();
cp.SaveFrame("camera");
std::cout << cp << std::endl;
}
}
catch (PlayerCc::PlayerError e)
{
std::cerr << e << std::endl;
return -1;
}
return 1;
}
