public static extern int ioctl(int fd, UInt64 request, ref v4l2_frequency frequency);
ioctl(int device, v4l2_operation request, ref v4l2_frequency argp);
/// <summary> /// Calls VIDIOC_S_FREQUENCY. /// </summary> public int SetFrequency(ref v4l2_frequency freq) { return(ioctl(deviceHandle, v4l2_operation.SetFrequency, ref freq)); }