private static IWaveProvider resampleTo44100(ISampleProvider audioFile)
{
if (audioFile.WaveFormat.SampleRate != 44100)
{
return(new MediaFoundationResampler(audioFile.ToWaveProvider(), 44100));
}
return(audioFile.ToWaveProvider());
}
private static MemoryStream CreateMemoryStreamFromSample(ISampleProvider playlist)
{
var waveProvider = playlist.ToWaveProvider();
byte[] buffer = new byte[16 * 1024];
var outputStream = new MemoryStream();
var waveFileWriter = new WaveFileWriter(outputStream, waveProvider.WaveFormat);
{
int read;
while ((read = waveProvider.Read(buffer, 0, buffer.Length)) > 0)
{
waveFileWriter.Write(buffer, 0, read);
}
waveFileWriter.Flush();
return(outputStream);
}
}
public MixingWaveProvider32 Overlay(ISampleProvider music, ISampleProvider watermark, double watermarkOffset)
{
if (music == null || watermark == null)
{
throw new ArgumentNullException("Не удалось наложить водяной знак. Трек или водяной знак были пустыми");
}
// Инициализация энкодера(чтобы получать на выходе любой формат)
NAudio.MediaFoundation.MediaFoundationApi.Startup();
var sampleProvider = new OffsetSampleProvider(watermark.ToWaveProvider().ToSampleProvider()); //Деление на sample
sampleProvider.DelayBy = TimeSpan.FromSeconds(watermarkOffset); //Добавление задержки
var watermarkWaveProvider = sampleProvider.ToWaveProvider(); //Перевод в wave водяного знака
var musicWaveProvider = music.ToWaveProvider(); //Перевод в wave музыки
// Слияние трека и водяного знака
var result = new MixingWaveProvider32(new[] { musicWaveProvider, watermarkWaveProvider });
result.ToSampleProvider().ToWaveProvider16();
return(result);
}
private static void SaveToMp3(string fileName, ISampleProvider audioToSave)
{
MediaFoundationEncoder.EncodeToMp3(audioToSave.ToWaveProvider(), fileName, 320000);
}
private async Task ConvertFiles(Func <BackgroundTaskControl, Task> callBack, BackgroundTaskControl bgtc)
{
await Task.Delay(250); // give time for rendering changes
WaveStream inputStream = null;
for (int i = 0; i < filePaths.Count(); i++)
{
try
{
if (filePaths[i].EndsWith(".ogg"))
{
inputStream = new VorbisWaveReader(filePaths[i]);
}
else if (filePaths[i].EndsWith(".flac"))
{
inputStream = new FlacReader(filePaths[i]);
}
else
{
inputStream = new AudioFileReader(filePaths[i]);
}
string selectedFileType = "";
Dispatcher.Invoke(() =>
{
selectedFileType = OutputFileTypeComboBox.SelectedItem as string;
WaitingLabel.Content = $"Now converting {safeFileNames[i]} to {selectedFileType.Substring(selectedFileType.IndexOf("(")+1,4)}";
if (bgtc != null)
{
bgtc.BackgroundTaskLabel.Content = WaitingLabel.Content;
}
});
if (selectedFileType.EndsWith("(.mp3)"))
{
string monoStereoSelection = "";
Dispatcher.Invoke(() =>
{
monoStereoSelection = MSConvertComboBox.SelectedItem as string;
});
if (inputStream.WaveFormat.BitsPerSample == 16)
{
IWaveProvider provider = MonoStereoConvert16(inputStream, monoStereoSelection == "Mono");
using (FileStream fileStream = File.Create($"{outputPath}/{safeFileNames[i]}.mp3"))
using (NAudio.Lame.LameMP3FileWriter writer = new NAudio.Lame.LameMP3FileWriter(fileStream, provider.WaveFormat, 320000))
{
byte[] buffer = new byte[4096];
int bytesRead = 0;
do
{
bytesRead = provider.Read(buffer, 0, buffer.Length);
writer.Write(buffer, 0, bytesRead);
} while (bytesRead > 0);
}
}
else if (inputStream.WaveFormat.BitsPerSample == 32)
{
ISampleProvider provider = MonoStereoConvert32(inputStream as ISampleProvider, monoStereoSelection == "Mono");
using (FileStream fileStream = File.Create($"{outputPath}/{safeFileNames[i]}.mp3"))
using (NAudio.Lame.LameMP3FileWriter writer = new NAudio.Lame.LameMP3FileWriter(fileStream, provider.WaveFormat, 320000))
{
byte[] buffer = new byte[4096];
int bytesRead = 0;
do
{
var providerAsWave = provider.ToWaveProvider(); // need to write with bytes not floats
bytesRead = providerAsWave.Read(buffer, 0, buffer.Length);
writer.Write(buffer, 0, bytesRead);
} while (bytesRead > 0);
}
}
TagLib.File outputTags = TagLib.File.Create($"{outputPath}//{safeFileNames[i]}.mp3");
TagLib.File inputTags = TagLib.File.Create(filePaths[i]);
outputTags.Tag.Album = inputTags.Tag.Album;
outputTags.Tag.AlbumArtists = inputTags.Tag.AlbumArtists;
outputTags.Tag.Genres = inputTags.Tag.Genres;
outputTags.Tag.Performers = inputTags.Tag.Performers;
outputTags.Tag.Year = inputTags.Tag.Year;
outputTags.Tag.Pictures = inputTags.Tag.Pictures;
outputTags.Tag.Title = inputTags.Tag.Title;
outputTags.Tag.Track = inputTags.Tag.Track;
outputTags.Save();
inputTags.Dispose();
outputTags.Dispose();
}
//else if (selectedFileType.EndsWith("(.wma)"))
//{
// FileStream fileStream = File.Create($"c:/temp/conversiontest/{safeFileName}.wma");
// fileStream.Close();
// using (MediaFoundationEncoder writer = new MediaFoundationEncoder(new NAudio.MediaFoundation.MediaType(inputStream.WaveFormat)))
// {
// writer.Encode($"c:/temp/conversiontest/{safeFileName}.wma", inputStream);
// }
//}
else if (selectedFileType.EndsWith("(.wav)"))
{
string monoStereoSelection = "";
Dispatcher.Invoke(() =>
{
monoStereoSelection = MSConvertComboBox.SelectedItem as string;
});
if (inputStream.WaveFormat.BitsPerSample == 16)
{
IWaveProvider provider = MonoStereoConvert16(inputStream, monoStereoSelection == "Mono");
using (FileStream fileStream = File.Create($"{outputPath}/{safeFileNames[i]}.wav"))
using (WaveFileWriter writer = new WaveFileWriter(fileStream, provider.WaveFormat))
{
byte[] buffer = new byte[4096];
int bytesRead = 0;
do
{
bytesRead = provider.Read(buffer, 0, buffer.Length);
writer.Write(buffer, 0, bytesRead);
} while (bytesRead > 0);
}
}
else if (inputStream.WaveFormat.BitsPerSample == 32)
{
ISampleProvider provider = MonoStereoConvert32(inputStream as ISampleProvider, monoStereoSelection == "Mono");
using (FileStream fileStream = File.Create($"{outputPath}/{safeFileNames[i]}.wav"))
using (WaveFileWriter writer = new WaveFileWriter(fileStream, provider.WaveFormat))
{
byte[] buffer = new byte[4096];
int bytesRead = 0;
do
{
var providerAsWave = provider.ToWaveProvider(); // need to write with bytes not floats
bytesRead = providerAsWave.Read(buffer, 0, buffer.Length);
writer.Write(buffer, 0, bytesRead);
} while (bytesRead > 0);
}
}
TagLib.File outputTags = TagLib.File.Create($"{outputPath}/{safeFileNames[i]}.wav");
TagLib.File inputTags = TagLib.File.Create(filePaths[i]);
outputTags.Tag.Album = inputTags.Tag.Album;
outputTags.Tag.AlbumArtists = inputTags.Tag.AlbumArtists;
outputTags.Tag.Genres = inputTags.Tag.Genres;
outputTags.Tag.Performers = inputTags.Tag.Performers;
outputTags.Tag.Year = inputTags.Tag.Year;
outputTags.Tag.Pictures = inputTags.Tag.Pictures;
outputTags.Tag.Title = inputTags.Tag.Title;
outputTags.Tag.Track = inputTags.Tag.Track;
outputTags.Save();
inputTags.Dispose();
outputTags.Dispose();
}
}
catch (Exception e)
{
MessageBox.Show("Error converting " + filePaths[i] + ", message: " + e.Message);
//just move onto the next song
}
finally
{
(inputStream as WaveStream)?.Close();
}
}
await callBack(bgtc);
MessageBox.Show("File(s) successfully converted!");
}