/// <summary>
/// Create a new file based on the given filename and start recording to it.
/// Filename must include its full path.
/// </summary>
/// <param name="fileName">The name of a file to be created. Include its full path</param>
/// <param name="codec">The codec to record in</param>
/// <param name="bitRate">The bitrate of the file</param>
/// <param name="channels">The channels to record</param>
public void StartCapture(string fileName, AvailableCodecs codec, int bitRate, Channels channels)
{
if (!ReadyToRecord())
{
throw new NullReferenceException("There is no SoundInSource configured for the recorder.");
}
fileName = $"{fileName}.{codec.ToString().ToLower()}";
WaveFormat waveSource;
switch (channels)
{
case Channels.Mono:
waveSource = _soundInSource.ToMono().WaveFormat;
break;
case Channels.Stereo:
waveSource = _soundInSource.ToStereo().WaveFormat;
break;
default:
throw new ArgumentException("The selected channel option could not be found.");
}
switch (codec)
{
case AvailableCodecs.MP3:
_writer = MediaFoundationEncoder.CreateMP3Encoder(waveSource, fileName, bitRate);
break;
case AvailableCodecs.AAC:
_writer = MediaFoundationEncoder.CreateAACEncoder(waveSource, fileName, bitRate);
break;
case AvailableCodecs.WMA:
_writer = MediaFoundationEncoder.CreateWMAEncoder(waveSource, fileName, bitRate);
break;
case AvailableCodecs.WAV:
_writer = new WaveWriter(fileName, waveSource);
break;
default:
throw new ArgumentException("The specified codec was not found.");
}
byte[] buffer = new byte[waveSource.BytesPerSecond];
_soundInSource.DataAvailable += (s, e) =>
{
int read = _waveStream.Read(buffer, 0, buffer.Length);
_writer.Write(buffer, 0, read);
};
// Start recording
_soundInSource.SoundIn.Start();
_state = RecordingState.Recording;
}