/// <summary>
/// Begins recording audio.
/// </summary>
/// <returns>true if recorder has started.</returns>
public bool StartAudio()
{
if (prepared && !isRecording)
{
if (audioRecorder.RecordingState == RecordState.Recording)
{
// Not all devices have a noise suppressor
if (NoiseSuppressor.IsAvailable && isNoiseSupression)
{
noiseSuppressor = NoiseSuppressor.Create(audioRecorder.AudioSessionId);
// Differences on some platforms according to API?
if (noiseSuppressor.Enabled == false)
{
noiseSuppressor.SetEnabled(true);
}
}
else
{
Console.WriteLine("Start was called, but the auio recorder was not ready to be started.");
}
}
else
{
Console.WriteLine("Noise suppression is not enabled on this device.");
}
isRecording = true;
audioRecorder.StartRecording();
// Allows us to write audio data to a file alongside recording.
// We have to do this as noise suppression isn't supported with MediaRecorder.
ThreadPool.QueueUserWorkItem(o => WriteAudioDataToFile());
return true;
}
else
{
return false;
}
}
/// <summary>
/// Stops recording audio and saves data to file.
/// </summary>
/// <returns>true if audio was recording and has been stopped.</returns>
public bool StopAudio()
{
if (prepared && isRecording)
{
if (audioRecorder.RecordingState == RecordState.Recording)
{
isRecording = false;
audioRecorder.Stop();
if (noiseSuppressor != null)
{
noiseSuppressor.Release();
noiseSuppressor.Dispose();
noiseSuppressor = null;
}
return true;
}
else
{
Console.WriteLine("Stop was called, but the audio recorder was not ready to be stopped.");
return false;
}
}
else
{
return false;
}
}
