Question by akerure · Aug 22, 2018 at 06:09 PM · audio microphone threads threading buffer

Copying buffer data in real time

I am trying to send incoming microphone audio from Unity to Wwise in real time. I have a "producer thread" and a "consumer thread". I am trying to copy my incoming buffer from the producer to the consumer.

 // Unity callback on microphone input (“producer thread“)
 void OnAudioFilterRead(float[] data, int channels)
 {
     // acquire ownership of mutex and buffer
     mutex.WaitOne();
 
     // copy samples to buffer (de–interleave channels)
     for (int i = 0; i < data.Length / channels; i++)
     {
         buffer.Add(data[i * channels]);
     }
 
 
     // release ownership of mutex and buffer
     mutex.ReleaseMutex();
 }
 
 // Wwise callback that sends buffered samples to Wwise (“consumer thread“)
 bool AudioSamplesDelegate(uint playingID, uint channelIndex, float[] samples)
 {
     // acquire ownership of mutex and buffer
     mutex.WaitOne();
 
     // copy samples from buffer to temporary block
     int blockSize = Math.Min(buffer.Count, samples.Length);
     List<float> block = buffer.GetRange(0, blockSize);
     buffer.RemoveRange(0, blockSize);
 
     // release ownership of mutex and buffer (release mutex as quickly as possible)
     mutex.ReleaseMutex();
 
     // copy samples from temporary block to output array
     block.CopyTo(samples);
 
     // Return false to indicate that there is no more data to provide. This will also stop the associated event.
     return IsPlaying;
 }

This works but the audio I get from Wwise is glitchy. Any inputs on the best method to do this/improve this? Are circular buffers the way to go

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