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/*
*      _______                       _____   _____ _____  
*     |__   __|                     |  __ \ / ____|  __ \ 
*        | | __ _ _ __ ___  ___  ___| |  | | (___ | |__) |
*        | |/ _` | '__/ __|/ _ \/ __| |  | |\___ \|  ___/ 
*        | | (_| | |  \__ \ (_) \__ \ |__| |____) | |     
*        |_|\__,_|_|  |___/\___/|___/_____/|_____/|_|     
*                                                         
* -------------------------------------------------------------
*
* TarsosDSP is developed by Joren Six at IPEM, University Ghent
*  
* -------------------------------------------------------------
*
*  Info: http://0110.be/tag/TarsosDSP
*  Github: https://github.com/JorenSix/TarsosDSP
*  Releases: http://0110.be/releases/TarsosDSP/
*  
*  TarsosDSP includes modified source code by various authors,
*  for credits and info, see README.
* 
*/


package be.tarsos.dsp.example;

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.lang.reflect.InvocationTargetException;

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.TargetDataLine;
import javax.sound.sampled.UnsupportedAudioFileException;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

import be.tarsos.dsp.AudioDispatcher;
import be.tarsos.dsp.AudioEvent;
import be.tarsos.dsp.io.jvm.JVMAudioInputStream;
import be.tarsos.dsp.pitch.PitchDetectionHandler;
import be.tarsos.dsp.pitch.PitchDetectionResult;
import be.tarsos.dsp.pitch.PitchProcessor;
import be.tarsos.dsp.pitch.PitchProcessor.PitchEstimationAlgorithm;

public class PitchDetectorExample extends JFrame implements PitchDetectionHandler {

	/**
	 * 
	 */
	private static final long serialVersionUID = 3501426880288136245L;

	private final JTextArea textArea;

	private AudioDispatcher dispatcher;
	private Mixer currentMixer;
	
	private PitchEstimationAlgorithm algo;	
	private ActionListener algoChangeListener = new ActionListener(){
		@Override
		public void actionPerformed(final ActionEvent e) {
			String name = e.getActionCommand();
			PitchEstimationAlgorithm newAlgo = PitchEstimationAlgorithm.valueOf(name);
			algo = newAlgo;
			try {
				setNewMixer(currentMixer);
			} catch (LineUnavailableException e1) {
				e1.printStackTrace();
			} catch (UnsupportedAudioFileException e1) {
				e1.printStackTrace();
			}
	}};

	public PitchDetectorExample() {
		this.setLayout(new GridLayout(0, 1));
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setTitle("Pitch Detector");
		
		JPanel inputPanel = new InputPanel();
		add(inputPanel);
		inputPanel.addPropertyChangeListener("mixer",
				new PropertyChangeListener() {
					@Override
					public void propertyChange(PropertyChangeEvent arg0) {
						try {
							setNewMixer((Mixer) arg0.getNewValue());
						} catch (LineUnavailableException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						} catch (UnsupportedAudioFileException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
					}
				});
		
		algo = PitchEstimationAlgorithm.YIN;
		
		JPanel pitchDetectionPanel = new PitchDetectionPanel(algoChangeListener);
		
		add(pitchDetectionPanel);
	
		
		textArea = new JTextArea();
		textArea.setEditable(false);
		add(new JScrollPane(textArea));
	}


	
	private void setNewMixer(Mixer mixer) throws LineUnavailableException,
			UnsupportedAudioFileException {
		
		if(dispatcher!= null){
			dispatcher.stop();
		}
		currentMixer = mixer;
		
		float sampleRate = 44100;
		int bufferSize = 1024;
		int overlap = 0;
		
		textArea.append("Started listening with " + Shared.toLocalString(mixer.getMixerInfo().getName()) + "\n");

		final AudioFormat format = new AudioFormat(sampleRate, 16, 1, true,
				true);
		final DataLine.Info dataLineInfo = new DataLine.Info(
				TargetDataLine.class, format);
		TargetDataLine line;
		line = (TargetDataLine) mixer.getLine(dataLineInfo);
		final int numberOfSamples = bufferSize;
		line.open(format, numberOfSamples);
		line.start();
		final AudioInputStream stream = new AudioInputStream(line);

		JVMAudioInputStream audioStream = new JVMAudioInputStream(stream);
		// create a new dispatcher
		dispatcher = new AudioDispatcher(audioStream, bufferSize,
				overlap);

		// add a processor
		dispatcher.addAudioProcessor(new PitchProcessor(algo, sampleRate, bufferSize, this));
		
		new Thread(dispatcher,"Audio dispatching").start();
	}

	public static void main(String... strings) throws InterruptedException,
			InvocationTargetException {
		SwingUtilities.invokeAndWait(new Runnable() {
			@Override
			public void run() {
				try {
					UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
				} catch (Exception e) {
					//ignore failure to set default look en feel;
				}
				JFrame frame = new PitchDetectorExample();
				frame.pack();
				frame.setVisible(true);
			}
		});
	}


	@Override
	public void handlePitch(PitchDetectionResult pitchDetectionResult,AudioEvent audioEvent) {
		if(pitchDetectionResult.getPitch() != -1){
			double timeStamp = audioEvent.getTimeStamp();
			float pitch = pitchDetectionResult.getPitch();
			float probability = pitchDetectionResult.getProbability();
			double rms = audioEvent.getRMS() * 100;
			String message = String.format("Pitch detected at %.2fs: %.2fHz ( %.2f probability, RMS: %.5f )\n", timeStamp,pitch,probability,rms);
			textArea.append(message);
			textArea.setCaretPosition(textArea.getDocument().getLength());
		}
	}
}