public Mp3Writer(Stream stream, int sampleRate, int bitRate, int channels, LAMEPreset preset)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
if (channels != 1 && channels != 2)
{
throw new ArgumentException(string.Format("Unsupported number of channels {0}", channels), "channels");
}
if (bitRate != 16)
{
throw new ArgumentException(string.Format("Unsupported PCM sample size {0}", bitRate), "bitRate");
}
if (sampleRate < 8000 || sampleRate > 48000)
{
throw new ArgumentException(string.Format("Unsupported Sample Rate {0}", sampleRate), "sampleRate");
}
_stream = stream;
_sampleRate = sampleRate;
_bitRate = bitRate;
_channels = channels;
_blockAlign = (short)(channels * (bitRate / 8));
_averageBytesPerSecond = sampleRate * _blockAlign;
_preset = preset;
_inBuffer = new ArrayUnion(_averageBytesPerSecond);
_outBuffer = new byte[sampleRate * 5 / 4 + 7200];
this._lame = new LibMp3Lame();
this._lame.InputSampleRate = _sampleRate;
this._lame.NumChannels = _channels;
this._lame.SetPreset(_preset);
this._lame.InitParams();
if (_channels == 1)
{
_encode = EncodePcm16Mono;
}
else
{
_encode = EncodePcm16stereo;
}
}
public BenchmarkTask(string name, EncodeAction encodeAction, DecodeAction decodeAction)
{
Name = name;
EncodeAction = encodeAction;
DecodeAction = decodeAction;
}
