public static IMediaEncoder EncoderByMediaType(string format)
{
IMediaEncoder encoder = null;
switch (format)
{
//case MediaFormat.AudioMp3:
case "mp3":
{
encoder = new Mp3Encoder();
break;
}
}
return(encoder);
}
private static void ComvertWav2Mp3(string dirName)
{
var bitrate = 64;
var encoder = new Mp3Encoder(new AudioFormat(),
bitrate, Mp3Encoder.CHANNEL_MODE_MONO, Mp3Encoder.QUALITY_MIDDLE, true);
var audioFile = new WavReader();
audioFile.OpenFile(dirName + TMP_EXTENTION);
var srcFormat = audioFile.GetFormat();
encoder.SetFormat(srcFormat, srcFormat);
var inBuffer = audioFile.readWav();
var outBuffer = new byte[inBuffer.Length];
var len = encoder.EncodeBuffer(inBuffer, 0, inBuffer.Length, outBuffer);
encoder.Close();
using (var outfile = System.IO.File.Create(dirName + MP3_EXTENTION))
outfile.Write(outBuffer, 0, len);
}
