NAudio.Wave.WaveOutEvent.Init C# (CSharp) Method

        public void Init(IWaveProvider waveProvider)
        {
            if (playbackState != PlaybackState.Stopped)
            {
                throw new InvalidOperationException("Can't re-initialize during playback");
            }
            if (hWaveOut != IntPtr.Zero)
            {
                // normally we don't allow calling Init twice, but as experiment, see if we can clean up and go again
                // try to allow reuse of this waveOut device
                // n.b. risky if Playback thread has not exited
                DisposeBuffers();
                CloseWaveOut();
            }

            this.callbackEvent = new AutoResetEvent(false);

            this.waveStream = waveProvider;
            int bufferSize = waveProvider.WaveFormat.ConvertLatencyToByteSize((DesiredLatency + NumberOfBuffers - 1) / NumberOfBuffers);            

            MmResult result;
            lock (waveOutLock)
            {
                result = WaveInterop.waveOutOpenWindow(out hWaveOut, (IntPtr)DeviceNumber, waveStream.WaveFormat, callbackEvent.SafeWaitHandle.DangerousGetHandle(), IntPtr.Zero, WaveInterop.WaveInOutOpenFlags.CallbackEvent);
            }
            MmException.Try(result, "waveOutOpen");

            buffers = new WaveOutBuffer[NumberOfBuffers];
            playbackState = PlaybackState.Stopped;
            for (int n = 0; n < NumberOfBuffers; n++)
            {
                buffers[n] = new WaveOutBuffer(hWaveOut, bufferSize, waveStream, waveOutLock);
            }
        }

        public Call(IPEndPoint Address)
        {
            UdpSender = new UdpClient();
            UdpSender.Connect(Address);
            this.Address = Address;

            _encoder = new SpeexEncoder(BandMode.Wide);
            SpeexProvider = new JitterBufferWaveProvider();

            SoundOut = new WaveOutEvent();
            SoundOut.Init(SpeexProvider);
            SoundOut.Play();
        }