public void Extract(CSCore.IWaveSource audioSource, Song s)
{
_currentTask = "Analysing Song";
List <Onset> onsets;
if (SongAnalysed(s.SongBase.InternalName))
{
onsets = LoadOnsets(GetOnsetFilePath(s.SongBase.InternalName));
}
else
{
onsets = _onsetDetector.Detect(audioSource.ToSampleSource());
SaveOnsets(GetOnsetFilePath(s.SongBase.InternalName), onsets);
}
OnsetTimes = onsets.Select(o => o.OnsetTime).ToList();
Onsets = onsets;
ApplyCorrection(OnsetTimes, _correction);
//force garbage collection
GC.Collect(2, GCCollectionMode.Forced, true);
//audioSource.Position = 0;
//AcoustID.ChromaContext cm = new AcoustID.ChromaContext();
//AcoustIDCSCore decoder = new AcoustIDCSCore(audioSource);
//cm.Start(audioSource.WaveFormat.SampleRate, audioSource.WaveFormat.Channels);
//decoder.Decode(cm.Consumer, 60);
//cm.Finish();
//var f = cm.GetFingerprint();
//Debug.WriteLine(f);
//AcoustID.Configuration.ClientKey = "3jSfGwVIGZ";
//AcoustID.Web.LookupService lService = new AcoustID.Web.LookupService();
//var duration = audioSource.GetLength().TotalSeconds;
//var lookupTask = lService.GetAsync(f, (int)duration, new string[] { "recordings", "compress" });
//lookupTask.ContinueWith(t =>
//{
// var resp = t.Result;
// foreach (var res in resp.Results)
// {
// Debug.WriteLine($"Score: {res.Score}, ID: {res.Id}");
// foreach (var rec in res.Recordings)
// {
// Debug.WriteLine($"{rec.Artists.First().Name} - {rec.Title}");
// }
// }
//});
//decoder.Dispose();
}
public List <Note> Detection()
{
List <Note> noteList = new List <Note>();
//Console.WriteLine("Press any key to convert to .WAV file...");
//Console.ReadLine();
int i;
//Open MP3 file and convert to WAV file.
WaveOutEvent waveOut = new WaveOutEvent();
Mp3FileReader mp3Reader = new Mp3FileReader(@"C:\Users\Fazle\source\repos\Practice\Media\twinkle.mp3");
toWAV(mp3Reader);
//Console.WriteLine(".WAV file created! Press any key to continue...");
//Console.ReadLine();
StereoToMono(@"C:\Users\Fazle\source\repos\Practice\Media\current.wav");
int sampleRate;
double[] data = null, R = null;
ReadWavFile(out sampleRate);
openWav(@"C:\Users\Fazle\source\repos\Practice\Media\currentMono.wav", out data, out R);
//Console.WriteLine(data.Length);
Progress <string> progress = new Progress <string>();
OnsetDetector detector = new OnsetDetector(DetectorOptions.Default, progress);
List <Onset> list = detector.Detect(@"C:\Users\Fazle\source\repos\Practice\Media\currentMono.wav");
/*Console.WriteLine("Time Amp");
* for (i = 0; i < list.Count; i++)
* {
* Console.Write(list[i].OnsetTime);
* Console.Write(" ");
* Console.Write(list[i].OnsetAmplitude);
* Console.Write(" ");
* Console.WriteLine();
* }
* Console.WriteLine();*/
int startPos = 0, stopPos = 0, flag = 0;
double freq = 0, duration = 0;
double[] temp;
double[] result;
CSCore.Utils.Complex[] complex;
for (i = 0; i < list.Count - 1; i++)
{
startPos = (int)Math.Ceiling(list[i].OnsetTime * sampleRate);
stopPos = (int)Math.Floor(list[i + 1].OnsetTime * sampleRate);
temp = new double[stopPos - startPos];
result = new double[stopPos - startPos];
complex = new CSCore.Utils.Complex[stopPos - startPos];
Array.ConstrainedCopy(data, startPos, temp, 0, temp.Length);
for (int j = 0; j < complex.Length; j++)
{
complex[j] = new Complex((float)temp[j]);
//Console.WriteLine(complex[j]);
}
//Console.ReadLine();
Note note = new Note();
note.Frequency = CalculateFFT(result, complex, flag);
note.Name = UtilMethods.FreqToNote(note.Frequency);
note.Duration = list[i + 1].OnsetTime - list[i].OnsetTime;
noteList.Add(note);
}
//Last Note
startPos = (int)Math.Floor(list[i].OnsetTime * sampleRate);
stopPos = data.Length - 1;
temp = new double[stopPos - startPos];
result = new double[stopPos - startPos];
complex = new CSCore.Utils.Complex[stopPos - startPos];
Array.ConstrainedCopy(data, startPos, temp, 0, temp.Length);
for (int j = 0; j < complex.Length; j++)
{
complex[j] = new Complex((float)temp[j]);
}
flag = 1;
Note lastNote = new Note();
lastNote.Frequency = CalculateFFT(result, complex, flag);
lastNote.Name = UtilMethods.FreqToNote(lastNote.Frequency);
lastNote.Duration = (data.Length / sampleRate) - list[i].OnsetTime;
noteList.Add(lastNote);
//Console.WriteLine("Press any key to terminate.");
//Console.ReadLine();
mp3Reader.Dispose();
return(noteList);
}
