static void Main(string[] args)
{
string filename = "";
filename = args.Length == 0 ? MusicReader.prompt() : args[0];
var dest = args.Length < 2 ? MusicReader.SaveInFolder() : args[1];
dest += Path.GetFileName(filename) + ".xml";
Console.WriteLine("File Name = " + Path.GetFileName(filename));
Console.WriteLine("Directed to = " + dest);
// Console.WriteLine("Frequency Based BPM");
Sample2Beat workit = new Sample2Beat();
List <float> bpm = workit.MusicProcesser(filename);//MusicReader.BPM(filename);
foreach (float f in bpm)
{
Console.WriteLine("BPM: " + f);
}
Console.WriteLine("\nGenerating Frequency Chain");
// List<float> chain = MusicReader.SignalChain(filename);
BattleSheet bs = new BattleSheet();
bs.NameOfSong = filename;
bs.BPM = bpm;
bs.SignalChain = workit.Signals; //MusicReader.Signals;
bs.BeatTimeStamp = workit.BeatTimeStamps; //MusicReader.BeatTimeStamps;
XmlSerializer write = new XmlSerializer(typeof(BattleSheet));
System.IO.StreamWriter file = new System.IO.StreamWriter(dest);
write.Serialize(file, bs);
file.Close();
}
public List <float> MusicProcesser(string filename, int toneDown = 1)
{
List <float> tempo = new List <float>();
const float INSTANCETIME = 0.023256f;
BeatTimeStamps.Clear();
Signals.Clear();
AudioFileReader pcm = new AudioFileReader(filename);
MusicReader.DisplayInfo(pcm);
Energize e = new Energize();
List <float> bpms = new List <float>();
int oneMin = 0;
float[] input = new float[2048];
Queue <float> HistoryBuffer = new Queue <float>();
//float[] HistoryBuffer = new float[43];
float[] left = new float[input.Length / 2];
float[] right = new float[input.Length / 2];
float[] mono = new float[input.Length / 2];
int read;
int leftCount = 0;
int rightCount = 0;
float InstanceEnergy = 0;
float sampLocalEnergy = 0;
float C = 0;
float timeDetected = 0.0f;
BeatSampleProvider samp = new BeatSampleProvider(pcm);
int beatTriggers = 0;
int beatThreshold = 2;
while ((read = samp.Read(input, 0, input.Length)) > 0)
{
leftCount = 0;
rightCount = 0;
for (int i = 0; i < input.Length - 1; i++)
{
if (i % 2 == 0)
{
left[leftCount] = input[i];
leftCount++;
}
else
{
right[rightCount] = input[i];
rightCount++;
}
}
for (int n = 0; n < mono.Length; n++)
{
mono[n] = (left[n] * .5f) + (right[n] * .5f);
}
InstanceEnergy = e.MonoInstanceEnergy(input);
SampleCount++;
HistoryBuffer.Enqueue(InstanceEnergy);
timeDetected += INSTANCETIME;
if (SampleCount == 43)
{
oneMin++;
SampleCount = 0;
}
if (oneMin == 60)
{
bpms.Add(BPM);
BPM = 0;
oneMin = 0;
}
if (HistoryBuffer.Count > 43)
{
HistoryBuffer.Dequeue();
sampLocalEnergy = e.LocalEnergy(HistoryBuffer.ToArray());
// float variance = e.Varaince(HistoryBuffer.ToArray(), sampleSize);
if (InstanceEnergy > (e.C(0) * sampLocalEnergy))
{
if (++beatTriggers == beatThreshold)
{
BeatTimeStamps.Add(timeDetected);
Signals.Add(FastFourierTransform.PopularFreq(mono));
BPM++;
}
}
else
{
beatTriggers = 0;
}
}
}
return(bpms);
}
