public AudioOutputDevice(WaveDataViewModel data_model, int device_index)
{
this.data_model = data_model;
left_val = new List <double>();
right_val = new List <double>();
source_stream = new WasapiLoopbackCapture(new MMDeviceEnumerator().EnumerateAudioEndPoints(DataFlow.Render, DeviceState.Active)[device_index]);
source_stream.DataAvailable += (obj, e) => {
(List <Point>, List <Point>)points = convert_from_bytes(source_stream.WaveFormat.BitsPerSample, source_stream.WaveFormat.Channels, e.Buffer, e.BytesRecorded);
lock ( left_val ) {
left_val.AddRange(points.Item1.Select(x => x.Y).ToList());
}
lock ( right_val ) {
right_val.AddRange(points.Item2.Select(x => x.Y).ToList());
}
/*
* var truncated_buffer_L = truncate_list(points.Item1.Select(x => x.Y).ToList(), 100);
* List<Point> truncated_points_L = new List<Point>();
* for (int i = 0; i < truncated_buffer_L.Count; ++i) {
* truncated_points_L.Add(new Point() { Y = truncated_buffer_L[i], X = (double)i / truncated_buffer_L.Count });
* }
* data_model.DataL.Clear();
* data_model.DataL.AddRange(truncated_points_L);
*
* var freq_point_L = getFFT_points(source_stream.WaveFormat.SampleRate, points.Item1);
* data_model.FreqL.Clear();
* data_model.FreqL.AddRange(freq_point_L.GetRange(0, 200).Select(x => new Point(x.Item1, x.Item2.Magnitude)));
* //*/
/*
* var truncated_buffer_R = truncate_list(points.Item2.Select(x => x.Y).ToList(), 100);
* List<Point> truncated_points_R = new List<Point>();
* for (int i = 0; i < truncated_buffer_R.Count; ++i) {
* truncated_points_R.Add(new Point() { Y = truncated_buffer_R[i], X = (double)i / truncated_buffer_R.Count });
* }
* data_model.DataR.Clear();
* data_model.DataR.AddRange(truncated_points_R);
*
* var freq_point_R = getFFT_points(source_stream.WaveFormat.SampleRate, points.Item2);
* data_model.FreqR.Clear();
* data_model.FreqR.AddRange(freq_point_R.GetRange(0, 200).Select(x => new Point(x.Item1, x.Item2.Magnitude)));
* /*
* NoiseCanceler nc = new NoiseCanceler();
* var tmp = nc.apply_freq_weight(get_sample_rate(), right_val);
* var truncated_tmp = truncate_list(tmp, 100);
* List<Point> truncated_points_tmp = new List<Point>();
* for (int i = 0; i < truncated_tmp.Count; ++i) {
* truncated_points_tmp.Add(new Point() { Y = truncated_tmp[i], X = (double)i / truncated_tmp.Count });
* }
* data_model.DataOutput.Clear();
* data_model.DataOutput.AddRange(truncated_points_tmp);
*
* var freq_tmp = getFFT_points(source_stream.WaveFormat.SampleRate, tmp.Select(x => new Point(0, x)).ToList());
* data_model.FreqOutput.Clear();
* data_model.FreqOutput.AddRange(freq_tmp.GetRange(0, 200).Select(x => new Point(x.Item1, x.Item2.Magnitude)));
* //*/
};
}
public AudioInputDevice(WaveDataViewModel data_model, AudioOutputDevice environment, int input_device_index, int output_device_index)
{
this.data_model = data_model;
noise_canceler = new NoiseCanceler();
source_stream = new NAudio.Wave.WaveIn();
source_stream.DeviceNumber = input_device_index;
source_stream.WaveFormat = new WaveFormat(44100, 24, 1);
dest = new NAudio.Wave.WaveOut();
dest.DeviceNumber = output_device_index;
dest.DesiredLatency = 100;
wave_provider = new BufferedWaveProvider(source_stream.WaveFormat);
wave_provider.DiscardOnBufferOverflow = true;
dest.Init(wave_provider);
int cnt = 0;
List <double> buffers = new List <double>();
source_stream.DataAvailable += (obj, e) => {
/*
* var truncated_points = get_point_from_bytes(e.Buffer, e.BytesRecorded);
* data_model.DataL.Clear();
* data_model.DataL.AddRange(truncated_points);
*
* var freq_point = getFFT_points(source_stream.WaveFormat.SampleRate,
* convert_from_bytes(source_stream.WaveFormat.BitsPerSample, source_stream.WaveFormat.Channels, e.Buffer, e.BytesRecorded).Item1);
* data_model.FreqL.Clear();
* data_model.FreqL.AddRange(freq_point.GetRange(0, 200).Select(x => new Point(x.Item1, x.Item2.Magnitude)));
* //*/
////////////////////////////////////////////////////////////////////////////////////////////////////
List <double> source_point = convert_from_bytes(source_stream.WaveFormat.BitsPerSample, source_stream.WaveFormat.Channels, e.Buffer, e.BytesRecorded).Item1
.Select(x => x.Y)
.ToList();
List <double> canceled_buf = noise_canceler.get_noise_canceled_buffer(environment.get_sample_rate(), environment.get_left_val(), environment.get_right_val(),
source_stream.WaveFormat.SampleRate, source_point);
byte[] result = convert_from_list(dest.OutputWaveFormat.BitsPerSample, dest.OutputWaveFormat.Channels, canceled_buf).Item1;
wave_provider.AddSamples(result, 0, result.Length);
/*
* var truncated_points = get_point_from_bytes(result, result.Length);
* data_model.DataOutput.Clear();
* data_model.DataOutput.AddRange(truncated_points);
*
* var freq_point = getFFT_points(dest.OutputWaveFormat.SampleRate,
* convert_from_bytes(dest.OutputWaveFormat.BitsPerSample, dest.OutputWaveFormat.Channels, result, result.Length).Item1);
* data_model.FreqOutput.Clear();
* data_model.FreqOutput.AddRange(freq_point.GetRange(0, 200).Select(x => new Point(x.Item1, x.Item2.Magnitude)));
* //*/
};
}
public MainWindow()
{
InitializeComponent();
wave_data_model_env = new WaveDataViewModel();
env_device = new AudioOutputDevice(wave_data_model_env, 0);
audio_env_grid.DataContext = wave_data_model_env;
wave_data_model_input = new WaveDataViewModel();
input_device = new AudioInputDevice(wave_data_model_input, env_device, 0, 0);
audo_input_grid.DataContext = wave_data_model_input;
init_event();
}