public void Update(GameTime gameTime)
{
system.update();
if (IsSongPlaying())
{
uint length = 0;
uint position = 0;
CurrentSong.getLength(out length, FMOD.TIMEUNIT.MS);
Channel.getPosition(out position, FMOD.TIMEUNIT.MS);
if (position == length)
{
NextSongEvent.Invoke();
}
}
#region Update System & FFT Algorithm
if (FFTEnabled)
{
// Perform a Fast Fourier Transform
int windowSize = spectrum.Length; //Samples.
IntPtr data;
uint length;
//hanning bpm
MyDSP.setParameterInt((int)FMOD.DSP_FFT.WINDOWTYPE, (int)FMOD.DSP_FFT_WINDOW.HAMMING);
MyDSP.setParameterInt((int)FMOD.DSP_FFT.WINDOWSIZE, windowSize);
MyDSP.getParameterData((int)FMOD.DSP_FFT.SPECTRUMDATA, out data, out length);
MyDSP.getParameterFloat((int)FMOD.DSP_FFT.DOMINANT_FREQ, out higher_freq);
fftParameter = (FMOD.DSP_PARAMETER_FFT)Marshal.PtrToStructure(data, typeof(FMOD.DSP_PARAMETER_FFT));
#region BPMDetection
if (fftParameter.spectrum.Length != 0)
{
for (int i = 0; i < windowSize; i++)
{
if (fftParameter.spectrum.Length == 2)
{
spectrum[i] = (fftParameter.spectrum[0][i] + fftParameter.spectrum[1][i]) / 2f;
}
}
}
previousSpectrum = spectrum;
#endregion
}
#endregion
}
public string RecognizeByAudioSource(FMOD.DSP m_FFTDsp, int rate)
{
string result = null;
IntPtr unmanagedData;
uint length;
m_FFTDsp.getParameterData((int)FMOD.DSP_FFT.SPECTRUMDATA, out unmanagedData, out length);
FMOD.DSP_PARAMETER_FFT fftData = (FMOD.DSP_PARAMETER_FFT)Marshal.PtrToStructure(unmanagedData, typeof(FMOD.DSP_PARAMETER_FFT));
if (fftData.spectrum != null && fftData.spectrum.Length > 0)
{
playingAudioSpectrum = fftData.spectrum[0];
Recognize(ref result, rate);
}
return(result);
}
public static void Update(GameTime gameTime)
{
system.update();
if (IsSongPlaying())
{
uint length = 0;
uint position = 0;
CurrentSong.getLength(out length, FMOD.TIMEUNIT.MS);
Channel.getPosition(out position, FMOD.TIMEUNIT.MS);
if (position == length)
{
NextSongEvent.Invoke();
}
// BPM Method 1 (More research)
#region Update System & FFT Algorithm
if (FFTEnabled)
{
// Perform a Fast Fourier Transform
int windowSize = spectrum.Length; //Samples.
IntPtr data;
uint fft_length;
//hanning bpm
MyDSP.setParameterInt((int)FMOD.DSP_FFT.WINDOWTYPE, (int)FMOD.DSP_FFT_WINDOW.HAMMING);
MyDSP.setParameterInt((int)FMOD.DSP_FFT.WINDOWSIZE, windowSize);
MyDSP.getParameterData((int)FMOD.DSP_FFT.SPECTRUMDATA, out data, out fft_length);
MyDSP.getParameterFloat((int)FMOD.DSP_FFT.DOMINANT_FREQ, out higher_freq);
fftParameter = (FMOD.DSP_PARAMETER_FFT)Marshal.PtrToStructure(data, typeof(FMOD.DSP_PARAMETER_FFT));
#region BPMDetection
if (fftParameter.spectrum.Length != 0)
{
for (int i = 0; i < windowSize; i++)
{
if (fftParameter.spectrum.Length == 2)
{
spectrum[i] = (fftParameter.spectrum[0][i] + fftParameter.spectrum[1][i]) / 2f;
}
}
}
previousSpectrum = spectrum;
#endregion
}
#endregion
// BPM Method 2 (Working! but with small sync bugs)
float bps = (60f / BPM);
bpm_elapsed += (float)gameTime.ElapsedGameTime.TotalSeconds;
if (bpm_elapsed > bps)
{
gotBeat = true;
offBeatDelay += (float)gameTime.ElapsedGameTime.TotalSeconds;
if (offBeatDelay > bps)
{
gotBeat = false;
bpm_elapsed = 0f;
offBeatDelay = 0f;
}
}
}
Channel.setVolume(masterVolume * musicVolume);
}
