/// <summary>
/// Queries the device for its capabilites.
/// </summary>
private void fetchDevice() {
v4l2_capability dv = new v4l2_capability();
if(ioControl.QueryDeviceCapabilities(ref dv) < 0)
throw new Exception("VIDIOC_QUERYCAP");
device = dv;
}
ioctl(int device, v4l2_operation request, ref v4l2_capability argp);
/// <summary>
/// Calls VIDIOC_QUERYCAP.
/// </summary>
public int QueryDeviceCapabilities(ref v4l2_capability cap)
{
return ioctl(deviceHandle, v4l2_operation.QueryCapabilities, ref cap);
}
private static extern int ioctl(int device, v4l2_operation request, ref v4l2_capability argp);
