private void BtnSaveStop_Click(object sender, EventArgs e)
{
lblWait.Visible = true;
Application.DoEvents();
BtnSaveStop.Hide();
StopCapture();
objStopWatch.Reset();
lblDisplayTime.Visible = false;
// Process.Start(_FileName);
AudioToText audioToText = new AudioToText();
string message = "Processing is Done!";
txtTranscript.Text = audioToText.GetTextBy16BitPCMAudio(_FileName, cmbLanguageCode.SelectedValue.ToString(), ref message);
lblWait.Visible = false;
BtnStart.Show();
MessageBox.Show(message);
}
private void StartCapture(string fileName)
{
//Capture Mode
CaptureMode = (CaptureMode)1;
DataFlow dataFlow = CaptureMode == CaptureMode.Capture ? DataFlow.Capture : DataFlow.Render;
//
//Getting the audio devices from
var devices = MMDeviceEnumerator.EnumerateDevices(dataFlow, DeviceState.Active);
if (!devices.Any())
{
MessageBox.Show("No devices found.");
return;
}
int selectedDeviceIndex = 0;
SelectedDevice = devices[selectedDeviceIndex];
if (SelectedDevice == null)
{
return;
}
if (CaptureMode == CaptureMode.Capture)
{
_soundIn = new WasapiCapture();
}
else
{
_soundIn = new WasapiLoopbackCapture();
}
_soundIn.Device = SelectedDevice;
//Sample rate of audio
int sampleRate = 16000;
//bits per rate
int bitsPerSample = 16;
//chanels
int channels = 1;
//initialize the soundIn instance
_soundIn.Initialize();
//create a SoundSource around the the soundIn instance
//this SoundSource will provide data, captured by the soundIn instance
var soundInSource = new SoundInSource(_soundIn)
{
FillWithZeros = false
};
//create a source, that converts the data provided by the
//soundInSource to any other format
//in this case the "Fluent"-extension methods are being used
IWaveSource convertedSource = soundInSource
.ChangeSampleRate(sampleRate) // sample rate
.ToSampleSource()
.ToWaveSource(bitsPerSample); //bits per sample
//channels=1 then we need to create mono audio
convertedSource = convertedSource.ToMono();
AudioToText audioToText = new AudioToText();
audioToText.SetFolderPermission(_folderPath);
//create a new wavefile
waveWriter = new WaveWriter(fileName, convertedSource.WaveFormat);
//register an event handler for the DataAvailable event of
//the soundInSource
//Important: use the DataAvailable of the SoundInSource
//If you use the DataAvailable event of the ISoundIn itself
//the data recorded by that event might won't be available at the
//soundInSource yet
soundInSource.DataAvailable += (s, e) =>
{
//read data from the converedSource
//important: don't use the e.Data here
//the e.Data contains the raw data provided by the
//soundInSource which won't have your target format
byte[] buffer = new byte[convertedSource.WaveFormat.BytesPerSecond / 2];
int read;
//keep reading as long as we still get some data
//if you're using such a loop, make sure that soundInSource.FillWithZeros is set to false
while ((read = convertedSource.Read(buffer, 0, buffer.Length)) > 0)
{
//write the read data to a file
// ReSharper disable once AccessToDisposedClosure
waveWriter.Write(buffer, 0, read);
}
};
//we've set everything we need -> start capturing data
objStopWatch.Start();
_soundIn.Start();
}
