/** Initializes the realtime audio processing handlers */
public void BeginRecording()
{
// recoreds output data from wasapi loopback sound card.
using (wasapiCapture = new WasapiLoopbackCapture())
{
wasapiCapture.Initialize();
wasapiCaptureSource = new SoundInSource(wasapiCapture);
// TODO: Stereo or Mono?
using (var stereoSource = wasapiCaptureSource.ToStereo())
{
// creates the spectrum Provider (Our own FFTProvider)
provider = new BasicSpectrumProvider(stereoSource.WaveFormat.Channels, stereoSource.WaveFormat.SampleRate, fftSize);
// creates the handler that uses the SpectrumProvider.
var handler = new FFTHandler(FftSize.Fft4096)
{
SpectrumProvider = provider,
UseAverage = true,
height = 100,
BarCount = 10,
BarSpacing = 2,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt
};
// notifies the spectrum provider each block read
var notificationSource = new SingleBlockNotificationStream(wasapiCaptureSource.ToSampleSource());
notificationSource.SingleBlockRead += (s, a) => provider.Add(a.Left, a.Right);
var wsrc = notificationSource.ToWaveSource();
// reads through the wave source as it is playing
// This is the key to getting the realtime music.
byte[] buffer = new byte[wsrc.WaveFormat.BytesPerSecond];
wasapiCaptureSource.DataAvailable += (s, e) =>
{
int read = wsrc.Read(buffer, 0, buffer.Length);
};
// starts the listening.
wasapiCapture.Start();
// gathers the data and sends it to the handler in a loop.
var fftBuffer = new float[(int)fftSize];
while (true)
{
if (provider.GetFftData(fftBuffer))
{
Console.Clear();
handler.CreateSpectrumLineInternal(fftBuffer, 100);
}
}
// Stops Listening.
wasapiCapture.Stop();
}
}
// bool Data_Available = false;
// Double[] Audio_Samples = new Double[0];
// var waveIn = new WasapiLoopbackCapture();
// waveIn.DataAvailable += ( sender, e) =>
//{
// Int32 sample_count = e.ByteCount / (waveIn.WaveFormat.BitsPerSample / 8);
// Single[] data = new Single[sample_count];
// for (int i = 0; i < sample_count; ++i)
// {
// data[i] = BitConverter.ToSingle(e.Data, i * 4);
// }
// int j = 0;
// Audio_Samples = new Double[sample_count / 2];
// for (int sample = 0; sample < data.Length; sample += 2)
// {
// Audio_Samples[j] = (Double)data[sample];
// Audio_Samples[j] += (Double)data[sample + 1];
// ++j;
// Console.WriteLine(Audio_Samples[j].ToString());
// }
// Data_Available = true;
//};
// waveIn.Initialize();
// //waveIn.Stopped += OnRecordingStopped;
// waveIn.Start();
// while (true)
// {
// if (Data_Available)
// {
// Data_Available = false;
// //Console.WriteLine(Audio_Samples.ToString());
// }
// }
//using (WasapiCapture capture = new WasapiLoopbackCapture())
//{
// //if nessesary, you can choose a device here
// //to do so, simply set the device property of the capture to any MMDevice
// //to choose a device, take a look at the sample here: http://cscore.codeplex.com/
// //initialize the selected device for recording
// capture.Initialize();
// var eq = new Equalizer(new SoundInSource(capture));
// var fft = new FftProvider(3, FftSize.Fft1024);
// var tenb = Equalizer.Create10BandEqualizer(new SoundInSource(capture));
//create a wavewriter to write the data to
//using (WaveWriter w = new WaveWriter("dump.wav", capture.WaveFormat))
//{
// //setup an eventhandler to receive the recorded data
// capture.DataAvailable += (s, e) =>
// {
// //save the recorded audio
// w.Write(e.Data, e.Offset, e.ByteCount);
// };
// Console.WriteLine("starting...");
// //start recording
// capture.Start();
// Console.ReadKey();
// capture.Stop();
//}
}
/** Initializes the realtime audio processing handlers */
public void BeginRecording()
{
// recoreds output data from wasapi loopback sound card.
using (wasapiCapture = new WasapiLoopbackCapture())
{
wasapiCapture.Initialize();
wasapiCaptureSource = new SoundInSource(wasapiCapture);
// TODO: Stereo or Mono?
using (var stereoSource = wasapiCaptureSource.ToStereo())
{
// creates the spectrum Provider (Our own FFTProvider)
provider = new BasicSpectrumProvider(stereoSource.WaveFormat.Channels, stereoSource.WaveFormat.SampleRate, fftSize);
// creates the handler that uses the SpectrumProvider.
var handler = new FFTHandler(FftSize.Fft4096)
{
SpectrumProvider = provider,
UseAverage = true,
height = 100,
BarCount = 50,
BarSpacing = 2,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt
};
// notifies the spectrum provider each block read
var notificationSource = new SingleBlockNotificationStream(wasapiCaptureSource.ToSampleSource());
notificationSource.SingleBlockRead += (s, a) => provider.Add(a.Left, a.Right);
var wsrc = notificationSource.ToWaveSource();
// reads through the wave source as it is playing
// This is the key to getting the realtime music.
byte[] buffer = new byte[wsrc.WaveFormat.BytesPerSecond];
wasapiCaptureSource.DataAvailable += (s, e) =>
{
int read = wsrc.Read(buffer, 0, buffer.Length);
};
// starts the listening.
wasapiCapture.Start();
// gathers the data and sends it to the handler in a loop.
var fftBuffer = new float[(int)fftSize];
while (true)
{
if (provider.GetFftData(fftBuffer))
{
Console.Clear();
handler.CreateSpectrumLineInternal(fftBuffer, 100);
}
}
// Stops Listening.
wasapiCapture.Stop();
}
}
// bool Data_Available = false;
// Double[] Audio_Samples = new Double[0];
// var waveIn = new WasapiLoopbackCapture();
// waveIn.DataAvailable += ( sender, e) =>
//{
// Int32 sample_count = e.ByteCount / (waveIn.WaveFormat.BitsPerSample / 8);
// Single[] data = new Single[sample_count];
// for (int i = 0; i < sample_count; ++i)
// {
// data[i] = BitConverter.ToSingle(e.Data, i * 4);
// }
// int j = 0;
// Audio_Samples = new Double[sample_count / 2];
// for (int sample = 0; sample < data.Length; sample += 2)
// {
// Audio_Samples[j] = (Double)data[sample];
// Audio_Samples[j] += (Double)data[sample + 1];
// ++j;
// Console.WriteLine(Audio_Samples[j].ToString());
// }
// Data_Available = true;
//};
// waveIn.Initialize();
// //waveIn.Stopped += OnRecordingStopped;
// waveIn.Start();
// while (true)
// {
// if (Data_Available)
// {
// Data_Available = false;
// //Console.WriteLine(Audio_Samples.ToString());
// }
// }
//using (WasapiCapture capture = new WasapiLoopbackCapture())
//{
// //if nessesary, you can choose a device here
// //to do so, simply set the device property of the capture to any MMDevice
// //to choose a device, take a look at the sample here: http://cscore.codeplex.com/
// //initialize the selected device for recording
// capture.Initialize();
// var eq = new Equalizer(new SoundInSource(capture));
// var fft = new FftProvider(3, FftSize.Fft1024);
// var tenb = Equalizer.Create10BandEqualizer(new SoundInSource(capture));
//create a wavewriter to write the data to
//using (WaveWriter w = new WaveWriter("dump.wav", capture.WaveFormat))
//{
// //setup an eventhandler to receive the recorded data
// capture.DataAvailable += (s, e) =>
// {
// //save the recorded audio
// w.Write(e.Data, e.Offset, e.ByteCount);
// };
// Console.WriteLine("starting...");
// //start recording
// capture.Start();
// Console.ReadKey();
// capture.Stop();
//}
}
