public void StartPreview(int mic, MMDevice speakers, bool windowsN)
{
try
{
_globalSettings = GlobalSettingsStore.Instance;
_waveOut = new WasapiOut(speakers, AudioClientShareMode.Shared, true, 40, windowsN);
_buffBufferedWaveProvider =
new BufferedWaveProvider(new WaveFormat(AudioManager.INPUT_SAMPLE_RATE, 16, 1));
_buffBufferedWaveProvider.ReadFully = true;
_buffBufferedWaveProvider.DiscardOnBufferOverflow = true;
RadioFilter filter = new RadioFilter(_buffBufferedWaveProvider.ToSampleProvider());
CachedLoopingAudioProvider natoEffect =
new CachedLoopingAudioProvider(filter.ToWaveProvider16(), new WaveFormat(AudioManager.INPUT_SAMPLE_RATE, 16, 1), CachedAudioEffect.AudioEffectTypes.NATO_TONE);
//add final volume boost to all mixed audio
_volumeSampleProvider = new VolumeSampleProviderWithPeak(natoEffect.ToSampleProvider(),
(peak => SpeakerMax = (float)VolumeConversionHelper.ConvertFloatToDB(peak)));
_volumeSampleProvider.Volume = SpeakerBoost;
if (speakers.AudioClient.MixFormat.Channels == 1)
{
if (_volumeSampleProvider.WaveFormat.Channels == 2)
{
_waveOut.Init(_volumeSampleProvider.ToMono());
}
else
{
//already mono
_waveOut.Init(_volumeSampleProvider);
}
}
else
{
if (_volumeSampleProvider.WaveFormat.Channels == 1)
{
_waveOut.Init(_volumeSampleProvider.ToStereo());
}
else
{
//already stereo
_waveOut.Init(_volumeSampleProvider);
}
}
_waveOut.Play();
}
catch (Exception ex)
{
Logger.Error(ex, "Error starting audio Output - Quitting! " + ex.Message);
ShowOutputError("Problem Initialising Audio Output!");
Environment.Exit(1);
}
try
{
_speex = new Preprocessor(AudioManager.SEGMENT_FRAMES, AudioManager.INPUT_SAMPLE_RATE);
//opus
_encoder = OpusEncoder.Create(AudioManager.INPUT_SAMPLE_RATE, 1,
FragLabs.Audio.Codecs.Opus.Application.Voip);
_encoder.ForwardErrorCorrection = false;
_decoder = OpusDecoder.Create(AudioManager.INPUT_SAMPLE_RATE, 1);
_decoder.ForwardErrorCorrection = false;
_waveIn = new WaveIn(WaveCallbackInfo.FunctionCallback())
{
BufferMilliseconds = AudioManager.INPUT_AUDIO_LENGTH_MS,
DeviceNumber = mic
};
_waveIn.NumberOfBuffers = 2;
_waveIn.DataAvailable += _waveIn_DataAvailable;
_waveIn.WaveFormat = new WaveFormat(AudioManager.INPUT_SAMPLE_RATE, 16, 1);
//debug wave file
//_waveFile = new WaveFileWriter(@"C:\Temp\Test-Preview.wav", _waveIn.WaveFormat);
_waveIn.StartRecording();
}
catch (Exception ex)
{
Logger.Error(ex, "Error starting audio Input - Quitting! " + ex.Message);
ShowInputError();
Environment.Exit(1);
}
}