479 lines
18 KiB
C#
479 lines
18 KiB
C#
|
using System.Collections;
|
|||
|
|
using System.Collections.Generic;
|
|||
|
|
using UnityEngine;
|
|||
|
|
using MoreMountains.Tools;
|
|||
|
|
using System;
|
|||
|
|
using UnityEngine.Events;
|
|||
|
|
|
|||
|
|
namespace MoreMountains.Tools
|
|||
|
|
{
|
|||
|
|
/// <summary>
|
|||
|
|
/// A static class used to save / load peaks once they've been computed
|
|||
|
|
/// </summary>
|
|||
|
|
public static class PeaksSaver
|
|||
|
|
{
|
|||
|
|
public static float[] Peaks;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// An event you can listen to that will get automatically triggered for every remapped beat
|
|||
|
|
/// </summary>
|
|||
|
|
public struct MMBeatEvent
|
|||
|
|
{
|
|||
|
|
public delegate void Delegate(string name, float value);
|
|||
|
|
static private event Delegate OnEvent;
|
|||
|
|
|
|||
|
|
static public void Register(Delegate callback)
|
|||
|
|
{
|
|||
|
|
OnEvent += callback;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static public void Unregister(Delegate callback)
|
|||
|
|
{
|
|||
|
|
OnEvent -= callback;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static public void Trigger(string name, float value)
|
|||
|
|
{
|
|||
|
|
OnEvent?.Invoke(name, value);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Serializable]
|
|||
|
|
public class Beat
|
|||
|
|
{
|
|||
|
|
public string Name = "Beat";
|
|||
|
|
public enum Modes { Raw, Normalized, BufferedRaw, BufferedNormalized, Amplitude, NormalizedAmplitude, AmplitudeBuffered, NormalizedAmplitudeBuffered }
|
|||
|
|
// remapped will send beat events when a threshold is passed, live just updates the value with whatever value is reading right now
|
|||
|
|
public enum BeatValueModes { Remapped, Live }
|
|||
|
|
|
|||
|
|
public Modes Mode = Modes.BufferedNormalized;
|
|||
|
|
public BeatValueModes BeatValueMode = BeatValueModes.Remapped;
|
|||
|
|
|
|||
|
|
[MMEnumCondition("Mode", (int)Modes.Raw, (int)Modes.Normalized, (int)Modes.BufferedRaw, (int)Modes.BufferedNormalized)]
|
|||
|
|
public Color BeatColor = Color.cyan;
|
|||
|
|
public int BandID = 0;
|
|||
|
|
public float Threshold = 0.5f;
|
|||
|
|
public float MinimumTimeBetweenBeats = 0.25f;
|
|||
|
|
|
|||
|
|
[MMEnumCondition("BeatValueMode", (int)BeatValueModes.Remapped)]
|
|||
|
|
public float RemappedAttack = 0.05f;
|
|||
|
|
[MMEnumCondition("BeatValueMode", (int)BeatValueModes.Remapped)]
|
|||
|
|
public float RemappedDecay = 0.2f;
|
|||
|
|
|
|||
|
|
[MMReadOnly]
|
|||
|
|
public bool BeatThisFrame;
|
|||
|
|
[MMReadOnly]
|
|||
|
|
public float CurrentValue;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float _previousValue;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float _lastBeatAt;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float _lastBeatValue;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public bool _initialized = false;
|
|||
|
|
|
|||
|
|
public UnityEvent OnBeat;
|
|||
|
|
|
|||
|
|
public void InitializeIfNeeded(int id, int bandID)
|
|||
|
|
{
|
|||
|
|
if (!_initialized)
|
|||
|
|
{
|
|||
|
|
Mode = Modes.Normalized;
|
|||
|
|
BeatValueMode = BeatValueModes.Remapped;
|
|||
|
|
Name = "Beat " + id;
|
|||
|
|
BeatColor = MMColors.RandomColor();
|
|||
|
|
BandID = bandID;
|
|||
|
|
Threshold = 0.3f + id * 0.02f;
|
|||
|
|
if (Threshold > 0.6f) { Threshold -= 0.5f; }
|
|||
|
|
Threshold = Threshold % 1f;
|
|||
|
|
MinimumTimeBetweenBeats = 0.25f + id * 0.02f;
|
|||
|
|
RemappedAttack = 0.05f + id * 0.01f;
|
|||
|
|
RemappedDecay = 0.2f + id * 0.01f;
|
|||
|
|
_initialized = true;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// This component lets you pick an audio source (either global : the whole scene's audio, a unique source, or the
|
|||
|
|
/// microphone), and will cut it into chunks that you can then use to emit beat events, that other objects can consume and act upon.
|
|||
|
|
/// The sample interval is the frequency at which sound will be analyzed, the amount of spectrum samples will determine the
|
|||
|
|
/// accuracy of the sampling, the window defines the method used to reduce leakage, and the number of bands
|
|||
|
|
/// will determine in how many bands you want to cut the sound. The more bands, the more levers you'll have to play with afterwards.
|
|||
|
|
/// In general, for all of these settings, higher values mean better quality and lower performance. The buffer speed determines how
|
|||
|
|
/// fast buffered band levels readjust.
|
|||
|
|
/// </summary>
|
|||
|
|
[AddComponentMenu("More Mountains/Tools/Audio/MMAudioAnalyzer")]
|
|||
|
|
public class MMAudioAnalyzer : MonoBehaviour
|
|||
|
|
{
|
|||
|
|
public enum Modes { Global, AudioSource, Microphone }
|
|||
|
|
|
|||
|
|
[Header("Source")]
|
|||
|
|
[MMInformation("This component lets you pick an audio source (either global : the whole scene's audio, a unique source, or the " +
|
|||
|
|
"microphone), and will cut it into chunks that you can then use to emit beat events, that other objects can consume and act upon. " +
|
|||
|
|
"The sample interval is the frequency at which sound will be analyzed, the amount of spectrum samples will determine the " +
|
|||
|
|
"accuracy of the sampling, the window defines the method used to reduce leakage, and the number of bands " +
|
|||
|
|
"will determine in how many bands you want to cut the sound. The more bands, the more levers you'll have to play with afterwards." +
|
|||
|
|
"In general, for all of these settings, higher values mean better quality and lower performance. The buffer speed determines how " +
|
|||
|
|
"fast buffered band levels readjust.", MoreMountains.Tools.MMInformationAttribute.InformationType.Info, false)]
|
|||
|
|
[MMReadOnlyWhenPlaying]
|
|||
|
|
public Modes Mode = Modes.Global;
|
|||
|
|
[MMEnumCondition("Mode", (int)Modes.AudioSource)]
|
|||
|
|
[MMReadOnlyWhenPlaying]
|
|||
|
|
public AudioSource TargetAudioSource;
|
|||
|
|
[MMEnumCondition("Mode", (int)Modes.Microphone)]
|
|||
|
|
public int MicrophoneID = 0;
|
|||
|
|
|
|||
|
|
[Header("Sampling")]
|
|||
|
|
[MMReadOnlyWhenPlaying]
|
|||
|
|
public float SampleInterval = 0.02f;
|
|||
|
|
[MMDropdown(2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192)]
|
|||
|
|
[MMReadOnlyWhenPlaying]
|
|||
|
|
public int SpectrumSamples = 1024;
|
|||
|
|
[MMReadOnlyWhenPlaying]
|
|||
|
|
public FFTWindow Window = FFTWindow.Rectangular;
|
|||
|
|
[Range(1, 64)]
|
|||
|
|
[MMReadOnlyWhenPlaying]
|
|||
|
|
public int NumberOfBands = 8;
|
|||
|
|
public float BufferSpeed = 2f;
|
|||
|
|
|
|||
|
|
[Header("Beat Events")]
|
|||
|
|
public Beat[] Beats;
|
|||
|
|
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float[] RawSpectrum;
|
|||
|
|
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float[] BandLevels;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float[] BufferedBandLevels;
|
|||
|
|
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float[] BandPeaks;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float[] LastPeaksAt;
|
|||
|
|
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float[] NormalizedBandLevels;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float[] NormalizedBufferedBandLevels;
|
|||
|
|
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float Amplitude;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float NormalizedAmplitude;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float BufferedAmplitude;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public float NormalizedBufferedAmplitude;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public bool Active = false;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public bool PeaksPasted = false;
|
|||
|
|
|
|||
|
|
protected const int _microphoneDuration = 5;
|
|||
|
|
protected string _microphone;
|
|||
|
|
protected float _microphoneStartedAt = 0f;
|
|||
|
|
protected const float _microphoneDelay = 0.030f;
|
|||
|
|
protected const float _microphoneFrequency = 24000f;
|
|||
|
|
protected WaitForSeconds _sampleIntervalWaitForSeconds;
|
|||
|
|
protected int _cachedNumberOfBands;
|
|||
|
|
|
|||
|
|
public virtual void FindPeaks()
|
|||
|
|
{
|
|||
|
|
float time = 0f;
|
|||
|
|
while (time < TargetAudioSource.clip.length)
|
|||
|
|
{
|
|||
|
|
TargetAudioSource.time = time;
|
|||
|
|
TargetAudioSource.GetSpectrumData(RawSpectrum, 0, Window);
|
|||
|
|
time += SampleInterval;
|
|||
|
|
ComputeBandLevels();
|
|||
|
|
PeaksSaver.Peaks = BandPeaks;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public virtual void PastePeaks()
|
|||
|
|
{
|
|||
|
|
BandPeaks = PeaksSaver.Peaks;
|
|||
|
|
PeaksSaver.Peaks = null;
|
|||
|
|
PeaksPasted = true;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public virtual void ClearPeaks()
|
|||
|
|
{
|
|||
|
|
BandPeaks = null;
|
|||
|
|
PeaksSaver.Peaks = null;
|
|||
|
|
PeaksPasted = false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected virtual void Awake()
|
|||
|
|
{
|
|||
|
|
Initialization();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public virtual void Initialization()
|
|||
|
|
{
|
|||
|
|
_cachedNumberOfBands = NumberOfBands;
|
|||
|
|
RawSpectrum = new float[SpectrumSamples];
|
|||
|
|
BandLevels = new float[_cachedNumberOfBands];
|
|||
|
|
BufferedBandLevels = new float[_cachedNumberOfBands];
|
|||
|
|
|
|||
|
|
// we make sure our peaks match our bands
|
|||
|
|
if ((BandPeaks == null) || (BandPeaks.Length == 0))
|
|||
|
|
{
|
|||
|
|
BandPeaks = new float[_cachedNumberOfBands];
|
|||
|
|
PeaksPasted = false;
|
|||
|
|
}
|
|||
|
|
if (BandPeaks.Length != BandLevels.Length)
|
|||
|
|
{
|
|||
|
|
BandPeaks = new float[_cachedNumberOfBands];
|
|||
|
|
PeaksPasted = false;
|
|||
|
|
}
|
|||
|
|
LastPeaksAt = new float[_cachedNumberOfBands];
|
|||
|
|
NormalizedBandLevels = new float[_cachedNumberOfBands];
|
|||
|
|
NormalizedBufferedBandLevels = new float[_cachedNumberOfBands];
|
|||
|
|
|
|||
|
|
if ((Mode == Modes.AudioSource) && (TargetAudioSource == null))
|
|||
|
|
{
|
|||
|
|
Debug.LogError(this.name + " : this MMAudioAnalyzer needs a target audio source to operate.");
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (Mode == Modes.Microphone)
|
|||
|
|
{
|
|||
|
|
#if !UNITY_WEBGL
|
|||
|
|
GameObject audioSourceGo = new GameObject("Microphone");
|
|||
|
|
audioSourceGo.transform.SetParent(this.gameObject.transform);
|
|||
|
|
TargetAudioSource = audioSourceGo.AddComponent<AudioSource>();
|
|||
|
|
//UNCOMMENT_MICROPHONE string _microphone = Microphone.devices[MicrophoneID].ToString();
|
|||
|
|
//UNCOMMENT_MICROPHONE TargetAudioSource.clip = Microphone.Start(_microphone, true, _microphoneDuration, (int)_microphoneFrequency);
|
|||
|
|
//UNCOMMENT_MICROPHONE TargetAudioSource.Play();
|
|||
|
|
_microphoneStartedAt = Time.time;
|
|||
|
|
#endif
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
Active = true;
|
|||
|
|
_sampleIntervalWaitForSeconds = new WaitForSeconds(SampleInterval);
|
|||
|
|
StartCoroutine(Analyze());
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected virtual void Update()
|
|||
|
|
{
|
|||
|
|
HandleBuffer();
|
|||
|
|
ComputeAmplitudes();
|
|||
|
|
HandleBeats();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected virtual IEnumerator Analyze()
|
|||
|
|
{
|
|||
|
|
while (true)
|
|||
|
|
{
|
|||
|
|
switch (Mode)
|
|||
|
|
{
|
|||
|
|
case Modes.AudioSource:
|
|||
|
|
TargetAudioSource.GetSpectrumData(RawSpectrum, 0, Window);
|
|||
|
|
break;
|
|||
|
|
case Modes.Global:
|
|||
|
|
AudioListener.GetSpectrumData(RawSpectrum, 0, Window);
|
|||
|
|
break;
|
|||
|
|
case Modes.Microphone:
|
|||
|
|
#if !UNITY_WEBGL
|
|||
|
|
int microphoneSamples = 0;
|
|||
|
|
//UNCOMMENT_MICROPHONE microphoneSamples = Microphone.GetPosition(_microphone);
|
|||
|
|
if (microphoneSamples / _microphoneFrequency > _microphoneDelay)
|
|||
|
|
{
|
|||
|
|
if (!TargetAudioSource.isPlaying)
|
|||
|
|
{
|
|||
|
|
TargetAudioSource.timeSamples = (int)(microphoneSamples - (_microphoneDelay * _microphoneFrequency));
|
|||
|
|
TargetAudioSource.Play();
|
|||
|
|
}
|
|||
|
|
_microphoneStartedAt = Time.time;
|
|||
|
|
}
|
|||
|
|
AudioListener.GetSpectrumData(RawSpectrum, 0, Window);
|
|||
|
|
#endif
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
ComputeBandLevels();
|
|||
|
|
yield return _sampleIntervalWaitForSeconds;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected virtual void HandleBuffer()
|
|||
|
|
{
|
|||
|
|
for (int i = 0; i < BandLevels.Length; i++)
|
|||
|
|
{
|
|||
|
|
BufferedBandLevels[i] = Mathf.Max(BufferedBandLevels[i] * Mathf.Exp(-BufferSpeed * Time.deltaTime), BandLevels[i]);
|
|||
|
|
|
|||
|
|
NormalizedBandLevels[i] = BandLevels[i] / BandPeaks[i];
|
|||
|
|
NormalizedBufferedBandLevels[i] = BufferedBandLevels[i] / BandPeaks[i];
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected virtual void ComputeBandLevels()
|
|||
|
|
{
|
|||
|
|
float coefficient = Mathf.Log(RawSpectrum.Length);
|
|||
|
|
int offset = 0;
|
|||
|
|
for (int i = 0; i < BandLevels.Length; i++)
|
|||
|
|
{
|
|||
|
|
float savedSum = 0f;
|
|||
|
|
float next = Mathf.Exp(coefficient / BandLevels.Length * (i + 1));
|
|||
|
|
float weight = 1f / (next - offset);
|
|||
|
|
for (float sum = 0f; offset < next; offset++)
|
|||
|
|
{
|
|||
|
|
sum += RawSpectrum[offset];
|
|||
|
|
savedSum = sum;
|
|||
|
|
}
|
|||
|
|
BandLevels[i] = Mathf.Sqrt(weight * savedSum);
|
|||
|
|
if (BandLevels[i] > BandPeaks[i])
|
|||
|
|
{
|
|||
|
|
BandPeaks[i] = BandLevels[i];
|
|||
|
|
LastPeaksAt[i] = Time.time;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected virtual void ComputeAmplitudes()
|
|||
|
|
{
|
|||
|
|
Amplitude = 0f;
|
|||
|
|
BufferedAmplitude = 0f;
|
|||
|
|
NormalizedAmplitude = 0f;
|
|||
|
|
NormalizedBufferedAmplitude = 0f;
|
|||
|
|
for (int i = 0; i < _cachedNumberOfBands; i++)
|
|||
|
|
{
|
|||
|
|
Amplitude += BandLevels[i];
|
|||
|
|
BufferedAmplitude += BufferedBandLevels[i];
|
|||
|
|
NormalizedAmplitude += NormalizedBandLevels[i];
|
|||
|
|
NormalizedBufferedAmplitude += NormalizedBufferedBandLevels[i];
|
|||
|
|
}
|
|||
|
|
Amplitude = Amplitude / _cachedNumberOfBands;
|
|||
|
|
BufferedAmplitude = BufferedAmplitude / _cachedNumberOfBands;
|
|||
|
|
NormalizedAmplitude = NormalizedAmplitude / _cachedNumberOfBands;
|
|||
|
|
NormalizedBufferedAmplitude = NormalizedBufferedAmplitude / _cachedNumberOfBands;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected virtual void HandleBeats()
|
|||
|
|
{
|
|||
|
|
if (Beats.Length <= 0)
|
|||
|
|
{
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
foreach (Beat beat in Beats)
|
|||
|
|
{
|
|||
|
|
float value = 0f;
|
|||
|
|
beat.BeatThisFrame = false;
|
|||
|
|
switch (beat.Mode)
|
|||
|
|
{
|
|||
|
|
case Beat.Modes.Amplitude:
|
|||
|
|
value = Amplitude;
|
|||
|
|
break;
|
|||
|
|
case Beat.Modes.AmplitudeBuffered:
|
|||
|
|
value = BufferedAmplitude;
|
|||
|
|
break;
|
|||
|
|
case Beat.Modes.BufferedNormalized:
|
|||
|
|
value = NormalizedBufferedBandLevels[beat.BandID];
|
|||
|
|
break;
|
|||
|
|
case Beat.Modes.BufferedRaw:
|
|||
|
|
value = BufferedBandLevels[beat.BandID];
|
|||
|
|
break;
|
|||
|
|
case Beat.Modes.Normalized:
|
|||
|
|
value = NormalizedBandLevels[beat.BandID];
|
|||
|
|
break;
|
|||
|
|
case Beat.Modes.NormalizedAmplitude:
|
|||
|
|
value = NormalizedAmplitude;
|
|||
|
|
break;
|
|||
|
|
case Beat.Modes.NormalizedAmplitudeBuffered:
|
|||
|
|
value = NormalizedBufferedAmplitude;
|
|||
|
|
break;
|
|||
|
|
case Beat.Modes.Raw:
|
|||
|
|
value = BandLevels[beat.BandID];
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (beat.BeatValueMode == Beat.BeatValueModes.Live)
|
|||
|
|
{
|
|||
|
|
beat.CurrentValue = value;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
// if audio value went below the bias during this frame
|
|||
|
|
if ((beat._previousValue > beat.Threshold) && (value <= beat.Threshold))
|
|||
|
|
{
|
|||
|
|
// if minimum beat interval is reached
|
|||
|
|
if (Time.time - beat._lastBeatAt > beat.MinimumTimeBetweenBeats)
|
|||
|
|
{
|
|||
|
|
OnBeat(beat, value);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// if audio value went above the bias during this frame
|
|||
|
|
if ((beat._previousValue <= beat.Threshold) && (value > beat.Threshold))
|
|||
|
|
{
|
|||
|
|
// if minimum beat interval is reached
|
|||
|
|
if (Time.time - beat._lastBeatAt > beat.MinimumTimeBetweenBeats)
|
|||
|
|
{
|
|||
|
|
OnBeat(beat, value);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
beat._previousValue = value;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected virtual void OnBeat(Beat beat, float rawValue)
|
|||
|
|
{
|
|||
|
|
beat._lastBeatAt = Time.time;
|
|||
|
|
beat.BeatThisFrame = true;
|
|||
|
|
if (beat.OnBeat != null)
|
|||
|
|
{
|
|||
|
|
beat.OnBeat.Invoke();
|
|||
|
|
}
|
|||
|
|
MMBeatEvent.Trigger(beat.Name, beat.CurrentValue);
|
|||
|
|
StartCoroutine(RemapBeat(beat));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected virtual IEnumerator RemapBeat(Beat beat)
|
|||
|
|
{
|
|||
|
|
float remapStartedAt = Time.time;
|
|||
|
|
|
|||
|
|
while (Time.time - remapStartedAt < beat.RemappedAttack + beat.RemappedDecay)
|
|||
|
|
{
|
|||
|
|
// attack
|
|||
|
|
if (Time.time - remapStartedAt < beat.RemappedAttack)
|
|||
|
|
{
|
|||
|
|
beat.CurrentValue = Mathf.Lerp(0f, 1f, (Time.time - remapStartedAt) / beat.RemappedAttack);
|
|||
|
|
}
|
|||
|
|
if (Time.time - remapStartedAt > beat.RemappedAttack)
|
|||
|
|
{
|
|||
|
|
beat.CurrentValue = Mathf.Lerp(1f, 0f, (Time.time - remapStartedAt - beat.RemappedAttack) / beat.RemappedDecay);
|
|||
|
|
}
|
|||
|
|
yield return null;
|
|||
|
|
}
|
|||
|
|
beat.CurrentValue = 0f;
|
|||
|
|
yield break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected virtual void OnValidate()
|
|||
|
|
{
|
|||
|
|
if ((Beats == null) || (Beats.Length == 0))
|
|||
|
|
{
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
int bandCounter = 0;
|
|||
|
|
for (int i = 0; i < Beats.Length; i++)
|
|||
|
|
{
|
|||
|
|
if (bandCounter >= _cachedNumberOfBands)
|
|||
|
|
{
|
|||
|
|
bandCounter = 0;
|
|||
|
|
}
|
|||
|
|
Beats[i].InitializeIfNeeded(i, bandCounter);
|
|||
|
|
bandCounter++;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|