private void DrainAudio()
{
_numSamples = QN.qn_read_audio(Context, _monoBuff, _monoBuff.Length);
unsafe
{
fixed(short *_src = &_monoBuff[0], _dst = &_stereoBuff[0])
{
short *src = _src;
short *dst = _dst;
for (int i = 0; i < _numSamples; i++)
{
*dst++ = *src;
*dst++ = *src++;
}
}
}
}