public void OnAudioFilterRead([NotNull] float[] data, int channels)
{
//If there is no session, clear filter and early exit
var maybeSession = Session;
if (!maybeSession.HasValue)
{
Array.Clear(data, 0, data.Length);
return;
}
_sessionLock.EnterUpgradeableReadLock();
try
{
//Check if there is no session again, this time protected by a lock
maybeSession = Session;
if (!maybeSession.HasValue)
{
Array.Clear(data, 0, data.Length);
return;
}
//Detect if the session has changed since the last call to this method, if so reset
var session = maybeSession.Value;
if (!session.Context.Equals(_lastPlayedSessionContext))
{
_lastPlayedSessionContext = maybeSession.Value.Context;
ApplyReset();
}
// Read data from pipeline
float arv;
var complete = Filter(session, data, channels, _temp, _diagnosticOutput, out arv);
_arv = arv;
//Clean up now that this session is complete
if (complete)
{
Log.Debug("Finished playback of speech session. id={0}", session.Context.Id);
//Clear the session
_sessionLock.EnterWriteLock();
try
{
Session = null;
}
finally
{
_sessionLock.ExitWriteLock();
}
//Reset the state
ApplyReset();
//Discard the diagnostic recorder if necessary
if (_diagnosticOutput != null)
{
_diagnosticOutput.Dispose();
_diagnosticOutput = null;
}
}
}
finally
{
_sessionLock.ExitUpgradeableReadLock();
}
}