Expose LED to OpenNI driver

[eruffaldi]

For some application we need to expose the LED to OpenNI. We'll use some available get/set property to exposing it, plus something for activating the motor driver since starting the Kinect

[eruffaldi]

Usage e.g. in OpenNI2 SimpleRead

float d;
int sd = sizeof(d);
rc = device.getProperty ( ONI_DEVICE_PROPERTY_PLAYBACK_SPEED, &d,&sd);
printf("PLAYBACK SPEED reported %d\n",rc);
if(rc == 0)
{
d = 1;
sd = 4; // blinking red
device.setProperty(ONI_DEVICE_PROPERTY_PLAYBACK_SPEED,&d,sd);
}