//This function should be called every tick/frame. This used the previous functions to
//Update time, get the current spectrum and the adaptive threshold and then does a check
//to see if a beat has occured. It also allows for some post-detection ignore clause.
//This function also does functions such as update the smoothing median list, create a
//timestamp object, update the lastBeatRegistered and checks to see if the song
//is still playing
public void update()
{
// Console.WriteLine(specFlux);
if (started)
{
float[] specStereo;
updateTime();
specStereo = getCurrentSpectrum();
//Console.WriteLine(specStereo);
beatThreshold = calculateFluxAndSmoothing(specStereo);
//Beat detected
if (specFlux > beatThreshold && ((uint) stopW.ElapsedMilliseconds - timeBetween) > 350)
{
if (smootherValues.Count > 1)
smootherValues.Insert(smootherValues.Count - 1, specFlux);
else
smootherValues.Insert(smootherValues.Count, specFlux);
if (smootherValues.Count >= 5)
{
smootherValues.Remove(0);
}
timeBetween = (uint)stopW.ElapsedMilliseconds;
TimeStamp t = new TimeStamp(currentMinutes, currentSeconds, currentMillis, specFlux);
Console.WriteLine("BEAT AT: " + t.getMinutes() + ":" + t.getSeconds() + ":" + t.getMilliseconds() + " -- BEAT FREQ: " + t.getFrequency() + " -- THRESHOLD: " + beatThreshold);
lastBeatRegistered = t;
}
else if (((uint) stopW.ElapsedMilliseconds - timeBetween) > 5000)
{
if (thresholdSmoother>0.4f)
thresholdSmoother -= 0.4f;
timeBetween = (uint)stopW.ElapsedMilliseconds;
}
if(!delayedSong)
songChannel1.isPlaying(ref areWePlaying);
else
songChannel2.isPlaying(ref areWePlaying);
//delete[] specStereo;
}
else
{
Console.ReadLine();
if (test == 1)
setStarted(true);
}
}
//Updates the timer and creates a "TimeStamp" object. This is used to detect where in the song
//we are, so timekeeping is a necessity.
private void updateTime()
{
time = stopW.Elapsed;
timeString = time.ToString();
currentTime = (int)stopW.ElapsedMilliseconds;
currentTime = currentTime - initialTime;
// if (currentTime > 1000)
//currentTime = 0;
//Console.WriteLine(time.ToString("mm\\:ss\\.ff"));
currentMillis = Int32.Parse(timeString.Substring(9, 2));
currentSeconds = Int32.Parse(timeString.Substring(6, 2));
currentMinutes = Int32.Parse(timeString.Substring(3, 2));
if(timeToDelay!=0)
{
if(currentTime>timeToDelay)
{
//songChannel2.setChannelGroup(channelMusic);
songChannel2.setPaused(false);
timeToDelay = 0;
}
}
//if (currentMinutes > 0)
// currentSeconds = ((currentTime / 1000) - (60 * currentMinutes));
//else
// currentSeconds = (currentTime / 1000);
//if (currentSeconds != lastSeconds)
//{
// currentMillis = 0;
// lastSeconds = currentSeconds;
//}
//else
//{
// currentMillis++;
// if (currentMillis > 1000)
// currentMillis = 0;
//}
//currentMinutes = ((currentTime / 1000) / 60);
currentTimeStamp = new TimeStamp(currentMinutes, currentSeconds, currentMillis);
}
//Loads a song into memory given a sample size and file-path to an audio file.
//The most commonly used and accurate Sample Size is 1024.
public void LoadSong(int sSize, string audioString)
{
//Take in Aruguments
sampleSize = sSize;
songString = audioString;
stopW.Start();
areWePlaying = true;
specFlux = 0.0f;
timeBetween = 0;
initialTime = (int)stopW.ElapsedMilliseconds;
currentTime = 0;
currentSeconds = 0;
lastSeconds = 0;
currentMillis = 0;
currentMinutes = 0;
median = 0.0f;
smoothMedian = 0.0f;
beatThreshold = 0.6f;
thresholdSmoother = 0.6f;
started = false;
lastBeatRegistered = new TimeStamp();
audio = new FMOD.Sound();
songChannel1 = new FMOD.Channel();
channelMusic = new FMOD.ChannelGroup();
previousFFT = new float[sampleSize
/ 2 + 1];
for (int i = 0; i < sampleSize / 2; i++)
{
previousFFT[i] = 0;
}
//Brute force for testing
//songString = "Music/drums.wav";
//Create channel and audio
FMODErrorCheck(system.createChannelGroup(null, ref channelMusic));
// CREATESOUNDEXINFO ex = new CREATESOUNDEXINFO();
FMODErrorCheck(system.createStream(songString, FMOD.MODE.SOFTWARE, ref audio));
audio.getLength(ref seconds, FMOD.TIMEUNIT.MS);
audio.getDefaults(ref sampleRate, ref zeroF, ref zeroF, ref zero);
seconds = ((seconds + 500) / 1000);
minutes = seconds / 60;
fullSeconds = (int)seconds;
seconds = seconds - (minutes * 60);
FMODErrorCheck(system.playSound(FMOD.CHANNELINDEX.FREE, audio, true, ref songChannel1));
//hzRange = (sampleRate / 2) / static_cast<float>(sampleSize);
songChannel1.setChannelGroup(channelMusic);
songChannel1.setPaused(true);
Console.WriteLine("Song Length: " + minutes + ":" + seconds);
Console.WriteLine("Sample Rate: " + sampleRate);
//std::cout << "Freq Range: " << hzRange << std::endl;
//songChannel1.setVolume(0);
}
