public static bool ConvertM4AToMp3(byte[] m4AFile, string directory, ref Track song)
//requires windows 8 or higher
{
var tempFile = Path.Combine(directory, "tempdata" + _uniqueTempFileCounter + ".m4a");
//
try
{
_uniqueTempFileCounter += 1;
File.WriteAllBytes(tempFile, m4AFile);
song.LocalPath += ".mp3"; //conversion wil result in an mp3
using (var reader = new MediaFoundationReader(tempFile)) //this reader supports: MP3, AAC and WAV
{
var aaCtype = AudioSubtypes.MFAudioFormat_AAC;
var bitrates = MediaFoundationEncoder.GetEncodeBitrates(aaCtype, reader.WaveFormat.SampleRate,
reader.WaveFormat.Channels);
MediaFoundationEncoder.EncodeToMp3(reader, song.LocalPath, bitrates[bitrates.GetUpperBound(0)]);
}
File.Delete(tempFile);
return(true);
}
catch (Exception)
{
if (File.Exists(tempFile))
{
File.Delete(tempFile);
}
return(false);
}
}
public static void ConvertM4AToMp3(Stream m4AStream, string directory, ref Track song)
//requires windows 8 or higher
{
using (var reader = new StreamMediaFoundationReader(m4AStream)) //this reader supports: MP3, AAC and WAV
{
var aaCtype = AudioSubtypes.MFAudioFormat_AAC;
var bitrates = MediaFoundationEncoder.GetEncodeBitrates(aaCtype, reader.WaveFormat.SampleRate,
reader.WaveFormat.Channels);
song.LocalPath += ".mp3"; //conversion wil result in an mp3
MediaFoundationEncoder.EncodeToMp3(reader, song.LocalPath, bitrates[bitrates.GetUpperBound(0)]);
}
}