#NAudio.Lame

Wrapper for libmp3lame.dll to add MP3 encoding support to NAudio.

NB: This is the static master branch. Please see the Experimental branch for more recent developments.

Usage

I've included both versions of libmp3lame.dll. Copy either libmp3lame.dll.32bit or libmp3lame.dll.64bit to your application and remove the bit-width suffix.

The LameMP3FileWriter class implements a Stream that encodes data written to it, writing the encoded MP3 data to either a file or a stream you provide.

Example Code:

Here is a very simple codec class to convert a WAV file to and from MP3:

using System.IO;
using NAudio.Wave;
using NAudio.Lame;

public static class Codec
{
	// Convert WAV to MP3 using libmp3lame library
	public static void WaveToMP3(string waveFileName, string mp3FileName, int bitRate = 128)
	{
		using (var reader = new WaveFileReader(waveFileName))
		using (var writer = new LameMP3FileWriter(mp3FileName, reader.WaveFormat, bitRate))
			reader.CopyTo(writer);
	}

	// Convert MP3 file to WAV using NAudio classes only
	public static void MP3ToWave(string mp3FileName, string waveFileName)
	{
		using (var reader = new Mp3FileReader(mp3FileName))
		using (var writer = new WaveFileWriter(waveFileName, reader.WaveFormat))
			reader.CopyTo(writer);
	}
}

To Do List:

• Create a nuget package
• Add support for decoding via libmp3lame
• Add IMp3FrameDecompressor implementation for pluggable MP3 decoding