void Start()
{
audioSource = GetComponent <AudioSource>();
_lightBarController = GameObject.FindWithTag("LightBar").GetComponent <LightBarController>();
// Process audio as it plays
realTimeSpectrum = new float[1024];
realTimeSpectralFluxAnalyzer = new SpectralFluxAnalyzer(Threshold);
this.sampleRate = AudioSettings.outputSampleRate;
// Preprocess entire audio file upfront
preProcessedSpectralFluxAnalyzer = new SpectralFluxAnalyzer(Threshold);
// Need all audio samples. If in stereo, samples will return with left and right channels interweaved
// [L,R,L,R,L,R]
multiChannelSamples = new float[audioSource.clip.samples * audioSource.clip.channels];
numChannels = audioSource.clip.channels;
numTotalSamples = audioSource.clip.samples;
clipLength = audioSource.clip.length;
// We are not evaluating the audio as it is being played by Unity, so we need the clip's sampling rate
this.sampleRate = audioSource.clip.frequency;
audioSource.clip.GetData(multiChannelSamples, 0);
Debug.Log("GetData done");
Thread bgThread = new Thread(this.getFullSpectrumThreaded);
Debug.Log("Starting Background Thread");
bgThread.Start();
}
void Update()
{
if (_lightBarController == null)
{
_lightBarController = GameObject.FindGameObjectWithTag("LightBar").GetComponent <LightBarController>();
}
// Real-time
if (!finishedSampling)
{
audioSource.GetSpectrumData(realTimeSpectrum, 0, FFTWindow.BlackmanHarris);
realTimeSpectralFluxAnalyzer.analyzeSpectrum(realTimeSpectrum, audioSource.time);
_lightBarController.UpdateState(realTimeSpectralFluxAnalyzer.spectralFluxSamples);
}
// Preprocessed
if (finishedSampling)
{
int indexToPlot = getIndexFromTime(audioSource.time) / 1024;
_lightBarController.UpdateState(preProcessedSpectralFluxAnalyzer.spectralFluxSamples, indexToPlot);
}
}
