void SendMicrophoneData()
{
if (_microphoneStream == null)
{
return;
}
// Store the client ID / stream ID so remote clients can find the corresponding AudioOutputStream
model.clientID = _microphoneStream.ClientID();
model.streamID = _microphoneStream.StreamID();
// Check if AudioInputStream is valid.
if (model.clientID < 0 || model.streamID < 0)
{
return;
}
// Clear the previous microphone frame data
Array.Clear(_microphoneFrameData, 0, _microphoneFrameData.Length);
// Send audio data in _microphoneFrameSize chunks until we're out of microphone data to send
bool didGetAudioData = false;
while (GetMicrophoneAudioData(_microphoneFrameData))
{
// If we have an _audioPreprocessor, preprocess the microphone data to remove noise and echo
if (_audioPreprocessor != null)
{
_audioPreprocessor.ProcessRecordSamples(_microphoneFrameData);
}
// Note that even when muted audio still needs to run through the audio processor to make sure echo cancellation works properly when mute is turned back off.
if (_mute)
{
Array.Clear(_microphoneFrameData, 0, _microphoneFrameData.Length);
}
// Send out microphone data
_microphoneStream.SendRawAudioData(_microphoneFrameData);
didGetAudioData = true;
}
// Normcore queues audio packets locally so they can go out in a single packet. This sends them off.
if (didGetAudioData)
{
_microphoneStream.SendQueuedMessages();
}
// If we got audio data, update the current microphone level.
// Note: I moved this here so that we do our volume level calculations on microphone audio that has run through the AudioPreprocessor.
if (didGetAudioData)
{
int firstFrame = _microphoneFrameData.Length - 256;
if (firstFrame < 0)
{
firstFrame = 0;
}
int firstSample = firstFrame * _microphoneChannels;
_microphoneDbLevel = StaticFunctions.CalculateAverageDbForAudioBuffer(_microphoneFrameData, firstSample);
}
}