public WasapiProvider()
{
// Init Pipes
this.recordingStream = new PipeStream();
this.LoopbackMp3Stream = new PipeStream();
this.LoopbackL16Stream = new PipeStream();
// Init Wave Processor thread
Thread waveProcessorThread = new Thread(new ThreadStart(this.waveProcessor))
{
Priority = ThreadPriority.Highest
};
// Init Wasapi Capture
this.loopbackWaveIn = new WasapiLoopbackCapture();
this.loopbackWaveIn.DataAvailable += new EventHandler <WaveInEventArgs>(this.loopbackWaveIn_DataAvailable);
// Init Raw Wav (16bit)
WaveStream rawWave16b = new Wave32To16Stream(new RawSourceWaveStream(this.recordingStream, NAudio.Wave.WaveFormat.CreateIeeeFloatWaveFormat(this.loopbackWaveIn.WaveFormat.SampleRate, this.loopbackWaveIn.WaveFormat.Channels)));
// Convert Raw Wav to PCM with audio format in settings
var audioFormat = AudioSettings.GetAudioFormat();
if (rawWave16b.WaveFormat.SampleRate == audioFormat.SampleRate &&
rawWave16b.WaveFormat.BitsPerSample == audioFormat.BitsPerSample &&
rawWave16b.WaveFormat.Channels == audioFormat.Channels)
{
// No conversion !
this.rawConvertedStream = null;
this.pcmStream = WaveFormatConversionStream.CreatePcmStream(rawWave16b);
}
else
{
// Resampler
this.rawConvertedStream = new WaveProviderToWaveStream(new MediaFoundationResampler(rawWave16b, audioFormat));
this.pcmStream = WaveFormatConversionStream.CreatePcmStream(rawConvertedStream);
}
// Init MP3 Encoder
this.mp3Writer = new LameMP3FileWriter(this.LoopbackMp3Stream, pcmStream.WaveFormat, AudioSettings.GetMP3Bitrate());
// Start Recording
this.loopbackWaveIn.StartRecording();
// Start Wave Processor thread
waveProcessorThread.Start();
}
public WasapiProvider()
{
// Init Pipes
this.recordingStream = new PipeStream();
this.LoopbackMp3Stream = new PipeStream();
this.LoopbackL16Stream = new PipeStream();
// Init Wave Processor thread
Thread waveProcessorThread = new Thread(new ThreadStart(this.waveProcessor))
{
Priority = ThreadPriority.Highest
};
// Init capture audio device
MMDevice captureDevice = null;
var enumerator = new MMDeviceEnumerator();
string captureDeviceID = SWYH.Properties.Settings.Default.AudioDevice;
if (captureDeviceID != "")
{
foreach (var wasapi in enumerator.EnumerateAudioEndPoints(DataFlow.All, DeviceState.Active))
{
if (wasapi.ID == captureDeviceID)
{
captureDevice = wasapi;
}
}
}
if (captureDevice == null)
{
captureDevice = enumerator.GetDefaultAudioEndpoint(DataFlow.Render, Role.Multimedia);
}
// Init Wasapi Capture
if (captureDevice.DataFlow == DataFlow.Render)
{
this.loopbackWaveIn = new WasapiLoopbackCapture(captureDevice);
}
else
{
this.loopbackWaveIn = new WasapiCapture(captureDevice);
}
this.loopbackWaveIn.DataAvailable += new EventHandler <WaveInEventArgs>(this.loopbackWaveIn_DataAvailable);
// Init Raw Wav (16bit)
WaveStream rawWave16b = new Wave32To16Stream(new RawSourceWaveStream(this.recordingStream, NAudio.Wave.WaveFormat.CreateIeeeFloatWaveFormat(this.loopbackWaveIn.WaveFormat.SampleRate, this.loopbackWaveIn.WaveFormat.Channels)));
// Convert Raw Wav to PCM with audio format in settings
var audioFormat = AudioSettings.GetAudioFormat();
if (rawWave16b.WaveFormat.SampleRate == audioFormat.SampleRate &&
rawWave16b.WaveFormat.BitsPerSample == audioFormat.BitsPerSample &&
rawWave16b.WaveFormat.Channels == audioFormat.Channels)
{
// No conversion !
this.rawConvertedStream = null;
this.pcmStream = WaveFormatConversionStream.CreatePcmStream(rawWave16b);
}
else
{
// Resampler
this.rawConvertedStream = new WaveProviderToWaveStream(new MediaFoundationResampler(rawWave16b, audioFormat));
this.pcmStream = WaveFormatConversionStream.CreatePcmStream(rawConvertedStream);
}
// Init MP3 Encoder
this.mp3Writer = new LameMP3FileWriter(this.LoopbackMp3Stream, pcmStream.WaveFormat, AudioSettings.GetMP3Bitrate());
// Start Recording
this.loopbackWaveIn.StartRecording();
// Start Wave Processor thread
waveProcessorThread.Start();
}
