public void StopEncoding()
{
lock (lockObj)
{
_wasapiCapture?.StopRecording();
_wasapiCapture?.Dispose();
_wasapiCapture = null;
_resampler?.Dispose(true);
_resampler = null;
//Debug Wav
// _afterFileWriter?.Close();
// _afterFileWriter?.Dispose();
// _beforeWaveFile?.Close();
// _beforeWaveFile?.Dispose();
_waveOut?.Stop();
_waveOut?.Dispose();
_waveOut = null;
_micWaveOut?.Stop();
_micWaveOut?.Dispose();
_micWaveOut = null;
_volumeSampleProvider = null;
_clientAudioMixer?.RemoveAllMixerInputs();
_clientAudioMixer = null;
_clientsBufferedAudio.Clear();
_encoder?.Dispose();
_encoder = null;
if (_udpVoiceHandler != null)
{
_udpVoiceHandler.RequestStop();
_udpVoiceHandler = null;
}
_speex?.Dispose();
_speex = null;
SpeakerMax = -100;
MicMax = -100;
_effectsOutputBuffer = null;
MessageHub.Instance.ClearSubscriptions();
}
}
private void WasapiCaptureOnDataAvailable(object sender, WaveInEventArgs e)
{
if (_resampler == null)
{
//create and use in the same thread or COM issues
_resampler = new EventDrivenResampler(windowsN, _wasapiCapture.WaveFormat, new WaveFormat(AudioManager.INPUT_SAMPLE_RATE, 16, 1));
}
if (e.BytesRecorded > 0)
{
//Logger.Info($"Time: {_stopwatch.ElapsedMilliseconds} - Bytes: {e.BytesRecorded}");
short[] resampledPCM16Bit = _resampler.Resample(e.Buffer, e.BytesRecorded);
// Logger.Info($"Time: {_stopwatch.ElapsedMilliseconds} - Bytes: {resampledPCM16Bit.Length}");
//fill sound buffer
for (var i = 0; i < resampledPCM16Bit.Length; i++)
{
_micInputQueue.Enqueue(resampledPCM16Bit[i]);
}
//read out the queue
while (_micInputQueue.Count >= AudioManager.SEGMENT_FRAMES)
{
short[] pcmShort = new short[AudioManager.SEGMENT_FRAMES];
for (var i = 0; i < AudioManager.SEGMENT_FRAMES; i++)
{
pcmShort[i] = _micInputQueue.Dequeue();
}
try
{
//volume boost pre
for (var i = 0; i < pcmShort.Length; i++)
{
// n.b. no clipping test going on here
pcmShort[i] = (short)(pcmShort[i] * MicBoost);
}
//process with Speex
_speex.Process(new ArraySegment <short>(pcmShort));
float max = 0;
for (var i = 0; i < pcmShort.Length; i++)
{
//determine peak
if (pcmShort[i] > max)
{
max = pcmShort[i];
}
}
//convert to dB
MicMax = (float)VolumeConversionHelper.ConvertFloatToDB(max / 32768F);
var pcmBytes = new byte[pcmShort.Length * 2];
Buffer.BlockCopy(pcmShort, 0, pcmBytes, 0, pcmBytes.Length);
//encode as opus bytes
int len;
var buff = _encoder.Encode(pcmBytes, pcmBytes.Length, out len);
if ((_udpVoiceHandler != null) && (buff != null) && (len > 0))
{
//create copy with small buffer
var encoded = new byte[len];
Buffer.BlockCopy(buff, 0, encoded, 0, len);
// Console.WriteLine("Sending: " + e.BytesRecorded);
if (_udpVoiceHandler.Send(encoded, len))
{
//send audio so play over local too
_micWaveOutBuffer?.AddSamples(pcmBytes, 0, pcmBytes.Length);
}
}
else
{
Logger.Error($"Invalid Bytes for Encoding - {pcmShort.Length} should be {SEGMENT_FRAMES} ");
}
_errorCount = 0;
}
catch (Exception ex)
{
_errorCount++;
if (_errorCount < 10)
{
Logger.Error(ex, "Error encoding Opus! " + ex.Message);
}
else if (_errorCount == 10)
{
Logger.Error(ex, "Final Log of Error encoding Opus! " + ex.Message);
}
}
}
}
}
