UsbUirt.Transmitter.TransmitInternal C# (CSharp) Method

        private void TransmitInternal(
            string irCode,
            CodeFormat? codeFormat,
            int? repeatCount,
            int? inactivityWaitTime,
            Emitter? emitter)
        {
            //This is kind of hackish...
            codeFormat = codeFormat ?? _defaultCodeFormat;
            repeatCount = repeatCount ?? _defaultRepeatCount;
            inactivityWaitTime = inactivityWaitTime ?? _defaultInactivityWaitTime;
            emitter = emitter ?? _defaultEmitter;

            if (irCode == null)
            {
                throw new ArgumentNullException("irCode", "irCode cannot be null");
            }

            if (irCode.Length == 0)
            {
                throw new ArgumentException("irCode", "irCode cannot be empty");
            }

            if (repeatCount < 0)
            {
                throw new ArgumentOutOfRangeException("repeatCount", "repeatCount cannot be negative");
            }

            if (inactivityWaitTime < 0)
            {
                throw new ArgumentOutOfRangeException("inactivityWaitTime",
                    "inactivityWaitTime cannot be less than TimeSpan.Zero");
            }

            using (var evt = new ManualResetEvent(false))
            {
                if (false == UUIRTTransmitIR(
                    DriverHandle,
                    emitter.Value.GetZoneForEmitter() + irCode,
                    (int)codeFormat.Value,
                    repeatCount.Value,
                    inactivityWaitTime.Value,
                    evt.Handle,
                    IntPtr.Zero,
                    IntPtr.Zero))
                {
                    Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
                }
                evt.WaitOne();
            }
        }