public async Task Write(Stream fileStream)
{
string wavIntermediate = Path.Combine(outputDirectoryProvider.GetOutputDirectory(), Guid.NewGuid() + ".wav");
try
{
{
await waveStream.Write(wavIntermediate);
await progressReporter.ReportProgress(0.97, JobProgressStatus.InProgress, "Converting WAV to MP3");
await using var audioFileReader = new AudioFileReader(wavIntermediate);
await using var writer = new LameMP3FileWriter(fileStream, audioFileReader.WaveFormat, LAMEPreset.ABR_320);
await audioFileReader.CopyToAsync(writer);
} // dispose it before reporting complete
await progressReporter.ReportProgress(1, JobProgressStatus.Complete, "File created successfully");
}
finally
{
if (File.Exists(wavIntermediate))
{
try { File.Delete(wavIntermediate); } catch (Exception) { }
}
}
}
public static async Task <string> WaveToMP3Async(string waveFileName,
string mp3FileName,
int bitRate = 192,
string title = "",
string subtitle = "",
string comment = "",
string artist = "",
string albumArtist = "",
string album = "",
string year = "",
string track = "",
string genre = "",
byte[] albumArt = null,
string[] userDefinedTags = null)
{
ID3TagData tag = new ID3TagData
{
Title = title,
Artist = artist,
Album = album,
Year = year,
Comment = comment,
Genre = LameMP3FileWriter.Genres[36], // 36 is game. FUll list @ http://ecmc.rochester.edu/ecmc/docs/lame/id3.html
Subtitle = subtitle,
AlbumArt = albumArt,
AlbumArtist = albumArtist,
Track = track,
UserDefinedTags = userDefinedTags
};
var reader = new AudioFileReader(waveFileName);
if (reader.WaveFormat.Channels <= 2)
{
using (reader)
{
using (var writer = new LameMP3FileWriter(mp3FileName, reader.WaveFormat, bitRate, tag))
await reader.CopyToAsync(writer); //reader.CopyTo(writer);
}
}
else if (reader.WaveFormat.Channels > 2)
{
reader.Dispose();
mp3FileName = string.Empty;
SplitWav(waveFileName);
var fileNames = MixSixChannel(waveFileName);
foreach (var fileName in fileNames)
{
using (reader = new AudioFileReader(fileName))
{
using (var writer = new LameMP3FileWriter(fileName.Replace(".wav", ".mp3"), reader.WaveFormat, bitRate, tag))
await reader.CopyToAsync(writer);
mp3FileName += fileName.Replace(".wav", ".mp3") + " ";
}
}
}
return($"{mp3FileName} created.\r\n\r\n");
}
public async Task ExecuteConversionAsync()
{
Directory.CreateDirectory(
new FileInfo(
GenerateTargetFilePath()
)
.Directory
.FullName
);
//var albumCoverBytes = await _albumCoverFileInfo
// .PipeAsync(async x =>
// {
// using (var fileStream = File.OpenRead(
// _albumCoverFileInfo?.FullName))
// {
// using (var memoryStream = new MemoryStream())
// {
// await fileStream.CopyToAsync(memoryStream);
// memoryStream.Position = 0;
// return memoryStream.ToArray();
// }
// }
// });
//var id3TagData = this.Pipe(@this =>
// {
// using (var wmaStream = new NAudio.WindowsMediaFormat.WmaStream(_sourceFile.FullName))
// {
// return new ID3TagData()
// {
// // AlbumArt = albumCoverBytes,
// Album = wmaStream["WM/AlbumTitle"],
// Title = wmaStream["Title"],
// Artist = wmaStream["WM/AlbumArtist"],
// Track = wmaStream["WM/TrackNumber"],
// Year = wmaStream["WM/Year"]
// };
// }
// });
using (var reader = new AudioFileReader(_sourceFile.FullName))
{
using (var writer = new LameMP3FileWriter(
GenerateTargetFilePath(),
reader.WaveFormat,
LAMEPreset.STANDARD// ,
// id3TagData
))
{
await reader.CopyToAsync(writer);
}
}
}
private async Task ConvertAsync(
string waveFileName,
string mp3FileName,
int bitRate = 192,
string title = "",
string subtitle = "",
string comment = "",
string artist = "",
string albumArtist = "",
string album = "",
string year = "",
string track = "",
string genre = "",
byte[] albumArt = null)
{
var tag = new ID3TagData
{
Title = title,
Artist = artist,
Album = album,
Year = year,
Comment = comment,
Genre = genre.Length == 0 ? LameMP3FileWriter.Genres[36] : genre, // 36 is game. Full list @ http://ecmc.rochester.edu/ecmc/docs/lame/id3.html
Subtitle = subtitle,
AlbumArt = albumArt,
AlbumArtist = albumArtist,
Track = track
};
var reader = new AudioFileReader(waveFileName);
if (reader.WaveFormat.Channels <= 2)
{
using (reader)
using (var writer = new LameMP3FileWriter(mp3FileName, reader.WaveFormat, bitRate, tag))
{
await reader.CopyToAsync(writer);
}
var createMessage = $"{mp3FileName} created";
_sendMessageEvent.OnSendMessageEvent(new SendMessageEventArgs(createMessage));
_logger.LogInformation(createMessage);
}
else if (reader.WaveFormat.Channels == 4 || reader.WaveFormat.Channels == 6)
{
reader.Dispose();
mp3FileName = string.Empty;
await Task.Run(() => SplitWav(waveFileName));
var fileNames = MixSixChannel(waveFileName);
foreach (var fileName in fileNames)
{
using (reader = new AudioFileReader(fileName))
{
using (var writer = new LameMP3FileWriter(fileName.Replace(".wav", ".mp3"), reader.WaveFormat, bitRate: bitRate, id3: tag))
{
await reader.CopyToAsync(writer);
}
mp3FileName += string.IsNullOrEmpty(mp3FileName) ? fileName.Replace(".wav", ".mp3") + " & " : fileName.Replace(".wav", ".mp3");
}
}
var createMessage = $"{mp3FileName} created";
_sendMessageEvent.OnSendMessageEvent(new SendMessageEventArgs(createMessage));
_logger.LogInformation(createMessage);
}
else
{
throw new Exception($"Could not convert {mp3FileName.Trim()}: It has {reader.WaveFormat.Channels} channels.");
}
}
