public MemoryStream GetMp3Sample(int seconds, string filepath = "")
{
try
{
var stream = new MemoryStream();
// Start recording from loopback
IWaveIn waveIn = new WasapiLoopbackCapture();
waveIn.DataAvailable += waveIn_DataAvailable;
waveIn.RecordingStopped += waveIn_RecordingStopped;
// Setup MP3 writer to output at 96kbit/sec
writer = new LameMP3FileWriter(stream, waveIn.WaveFormat, LAMEPreset.ABR_96);
_isRecording = true;
waveIn.StartRecording();
// Wait for X seconds
System.Threading.Thread.Sleep(seconds * 1000);
waveIn.StopRecording();
// flush output to finish MP3 file correctly
writer.Flush();
// Dispose of objects
waveIn.Dispose();
writer.Dispose();
if (filepath != "")
using (var file = new FileStream(filepath, FileMode.Create, FileAccess.Write))
stream.WriteTo(file);
return stream;
}
catch (Exception)
{
throw;
}
}
private void FlushBufferToFile()
{
IsRecording = false;
this.OnAudioData(new AudioDataEventArgs());
_prerecord.Clear();
_recordingEnd = DateTime.Now;
var dirName = Options.GetActualOutputDir();
if (Options.CreateDateSubdirectories)
{
dirName = Path.Combine(dirName, _recordingEnd.Date.ToString("dd-MM-yy"));
}
if (!Directory.Exists(dirName))
{
Directory.CreateDirectory(dirName);
}
var fileName = "Record from " + _recordingBegin.ToString("dd-MM-yy HH:mm:ss")
+ " to " + _recordingEnd.ToString("dd-MM-yy HH:mm:ss");
fileName += ".mp3";
fileName = NormalizeFileName(fileName);
fileName = Path.Combine(dirName, fileName);
if (_recordingBegin != DateTime.MinValue)
{
var audioLengthMs = _recordingEnd.Subtract(_recordingBegin).TotalMilliseconds;
// 27/01/16 don`t save empty audio (started by random sygnal pick)
if (Math.Abs(audioLengthMs - Options.StopIntegrationTime - Options.PrerecordDuration) > Options.MinAudioLength)
{
try
{
//var phoneNumber = new Aon().RecognizePhoneNumber(Options.MicrophoneBitRate,
// _recordingBufferStream.ToArray());
//if (!string.IsNullOrEmpty(phoneNumber))
//{
// var fileNameNoExt = Path.GetFileNameWithoutExtension(fileName);
// fileNameNoExt = fileNameNoExt + "_" + phoneNumber;
// var fileExt = Path.GetExtension(fileName);
// fileName = NormalizeFileName(Path.Combine(Path.GetDirectoryName(fileName),
// fileNameNoExt + fileExt));
//}
_recordingBufferStream.Seek(0, SeekOrigin.Begin);
using (var mp3File = new LameMP3FileWriter(fileName,
_waveIn.WaveFormat, Options.OutputBitRate))
{
_recordingBufferStream.CopyTo(mp3File);
mp3File.Flush();
}
OnAfterFlushToFile(new FileSystemEventArgs(WatcherChangeTypes.Created, dirName, fileName));
if (!string.IsNullOrEmpty(Options.AfterMp3FlushCommand))
{
var cmd = Options.AfterMp3FlushCommand;
try
{
var psi = new ProcessStartInfo(cmd, $@"""{fileName}""");
psi.WindowStyle = ProcessWindowStyle.Hidden;
Process.Start(psi);
}
catch (Exception e)
{
}
}
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
}
}
}
_recordingBufferStream = new MemoryStream();
_recordingBegin = DateTime.MinValue;
_recordingEnd = DateTime.MinValue;
}
