MetronomeStomp.java

package com.PP.StompDetector;


import android.app.Activity;
import android.util.Log;

import com.PP.LunarTabsAndroid.APIs.MetronomeAPI;
import com.PP.LunarTabsAndroid.Activities.MainActivity;

public class MetronomeStomp implements StompListener {

	protected MainActivity mainActivity;
	
	//state
	protected boolean tempoSet = false;
	protected double lastTS = -1;
	
	public MetronomeStomp(Activity parent) {
		mainActivity = (MainActivity) parent;
	}

	@Override
	public void trigger_callback(double timestamp) {
		if(!tempoSet && lastTS==-1) {
			
			//state
			Log.d("FIRST SET", ""+lastTS);
			lastTS = timestamp;
			
		}
		else if(!tempoSet && lastTS!=-1) {
			
			//find tempo and start metronome
			double diff_ms = timestamp - lastTS;
			double bpm = 1.0 / (diff_ms / (1000*60));			
			MetronomeAPI.getInstance().setBpm((short)bpm);
			MetronomeAPI.getInstance().start();
			
			//state
			Log.d("TEMPO SET", ""+bpm);			
			tempoSet = true;
		}
		else if(tempoSet && lastTS!=-1) {
			
			//stop metronome
			MetronomeAPI.getInstance().stop();
			
			//state
			tempoSet = false;
			lastTS = -1;
			Log.d("RESET", ""+lastTS);			
		}
	}

}