public static void StartRecording(String fileName, int bitRate = 192000)
{
capture = new WasapiLoopbackCapture();
capture.Initialize();
wasapiCaptureSource = new SoundInSource(capture);
stereoSource = wasapiCaptureSource.ToStereo();
switch (System.IO.Path.GetExtension(fileName))
{
case ".mp3":
encoderWriter = MediaFoundationEncoder.CreateMP3Encoder(stereoSource.WaveFormat, fileName, bitRate);
writerType = WriterType.EncoderWriter;
break;
case ".wma":
encoderWriter = MediaFoundationEncoder.CreateWMAEncoder(stereoSource.WaveFormat, fileName, bitRate);
writerType = WriterType.EncoderWriter;
break;
case ".aac":
encoderWriter = MediaFoundationEncoder.CreateAACEncoder(stereoSource.WaveFormat, fileName, bitRate);
writerType = WriterType.EncoderWriter;
break;
case ".wav":
waveWriter = new WaveWriter(fileName, capture.WaveFormat);
writerType = WriterType.WaveWriter;
break;
}
switch (writerType)
{
case WriterType.EncoderWriter:
capture.DataAvailable += (s, e) =>
{
encoderWriter.Write(e.Data, e.Offset, e.ByteCount);
};
break;
case WriterType.WaveWriter:
capture.DataAvailable += (s, e) =>
{
waveWriter.Write(e.Data, e.Offset, e.ByteCount);
};
break;
}
// Start recording
capture.Start();
}
private static void AddTimeSpan(IWaveSource source, MediaFoundationEncoder mediaFoundationEncoder, TimeSpan startTimeSpan, TimeSpan endTimeSpan)
{
source.SetPosition(startTimeSpan);
int read = 0;
long bytesToEncode = source.GetRawElements(endTimeSpan - startTimeSpan);
var buffer = new byte[source.WaveFormat.BytesPerSecond];
while ((read = source.Read(buffer, 0, buffer.Length)) > 0)
{
int bytesToWrite = (int)Math.Min(read, bytesToEncode);
mediaFoundationEncoder.Write(buffer, 0, bytesToWrite);
bytesToEncode -= bytesToWrite;
}
}
private void StartRecordBtn_Clicked(object sender, RoutedEventArgs ev)
{
capture = new WasapiLoopbackCapture();
capture.Initialize();
DateTime date = DateTime.Now;
string filename = string.Format(@"F:\Share\DailyMeetingRecord\{0:yyyy_MM_dd}.mp3", date);
//create a wavewriter to write the data to
writer = MediaFoundationEncoder.CreateMP3Encoder(capture.WaveFormat, filename);
byte[] buffer = new byte[capture.WaveFormat.BytesPerSecond];
//setup an eventhandler to receive the recorded data
capture.DataAvailable += (s, e) =>
{
//save the recorded audio
writer.Write(e.Data, e.Offset, e.ByteCount);
};
//start recording
capture.Start();
this.StartRecordBtn.IsEnabled = false;
this.StopRecordBtn.IsEnabled = true;
}
public void startRecording(MMDevice micDevice, MMDevice speakDevice)
{
isRecording = true;
window.LockUI();
playSilence();
makeFileNames();
micCapture = new WasapiCapture();
micCapture.Device = micDevice;
micCapture.Initialize();
speakCapture = new WasapiLoopbackCapture();
speakCapture.Device = speakDevice;
speakCapture.Initialize();
micSource = new SoundInSource(micCapture);
micWriter = MediaFoundationEncoder.CreateMP3Encoder(micSource.WaveFormat, micFileName);
byte[] micBuffer = new byte[micSource.WaveFormat.BytesPerSecond];
micSource.DataAvailable += (s, e) =>
{
int read = micSource.Read(micBuffer, 0, micBuffer.Length);
micWriter.Write(micBuffer, 0, read);
};
micCapture.Start();
speakSource = new SoundInSource(speakCapture);
speakWriter = MediaFoundationEncoder.CreateMP3Encoder(speakSource.WaveFormat, speakFileName);
byte[] speakBuffer = new byte[speakSource.WaveFormat.BytesPerSecond];
speakSource.DataAvailable += (s, e) =>
{
int read = speakSource.Read(speakBuffer, 0, speakBuffer.Length);
speakWriter.Write(speakBuffer, 0, read);
};
speakCapture.Start();
}
public MP3Recorder(string filename)
{
if (File.Exists(filename))
{
File.Delete(filename);
}
wasapiCapture_ = new WasapiCapture();
wasapiCapture_.Initialize();
var
wasapiCaptureSource = new SoundInSource(wasapiCapture_);
stereoSource_ = wasapiCaptureSource.ToStereo();
writer_ = MediaFoundationEncoder.CreateMP3Encoder(stereoSource_.WaveFormat, filename);
byte []
buffer = new byte[stereoSource_.WaveFormat.BytesPerSecond];
wasapiCaptureSource.DataAvailable += (s, e) =>
{
int
read = stereoSource_.Read(buffer, 0, buffer.Length);
writer_.Write(buffer, 0, read);
};
wasapiCapture_.Start();
}