Java实现歌曲可视化效果

mport java.awt.Graphics; 
import java.io.File; 
import javax.sound.sampled.AudioFormat; 
import javax.sound.sampled.AudioInputStream; 
import javax.sound.sampled.AudioSystem; 
import javax.sound.sampled.DataLine; 
import javax.sound.sampled.SourceDataLine;



public class Musicline extends javax.swing.JFrame implements Runnable
{

	private byte[] audioData=null; 
	private int intBytes = 0; 
	private byte[] ml=new byte[1]; 
	private int[] drawl=null; 
/** Creates new form Musicline */ 
	public Musicline() 
	{ 
		initComponents(); 
		Graphics g; 
		g=this.getGraphics(); 
	} 
	public void paint(Graphics g) 
	{ 
		g.clearRect(0,0,900,900); 
		//System.out.print(drawl.length); 
		if(audioData!=null) 
		{ 
			drawl=new int[audioData.length]; 
			for(int i=0;i<audioData.length;i++) 
			{ 
				ml[0]=audioData; 
				//String s=new String(ml); 
				drawl=Math.abs((int)ml[0]); 
			} 
			System.out.println(drawl[0]); 
			for(int i=0;i<drawl.length-1;i++) 
			{ 
				g.drawLine(i*this.getWidth()/256,drawl+100,(i+1)*this.getWidth()/256,drawl[i+1]+100); 
			} 
		}

	} 
	public void run() 
	{ 
		while(intBytes!=-1) 
		{ 
			try
			{ 
				synchronized(this)
				{ 
					this.wait(10); 
				} 
			} catch (InterruptedException ex)
			{ 
				ex.printStackTrace(); 
			} 
			repaint(); 
		}	 
	} 
	public void play() 
	{ 
		try 
		{
			AudioInputStream ais = AudioSystem.getAudioInputStream(new File( "E:/a.wav"));// 获得音频输入流 
			ais=AudioSystem.getAudioInputStream(AudioFormat.Encoding.PCM_SIGNED,ais); 
			AudioFormat baseFormat = ais.getFormat();// 指定声音流中特定数据安排 
			System.out.println("baseFormat="+baseFormat); 
			DataLine.Info info = new DataLine.Info(SourceDataLine.class, baseFormat); 
			System.out.println("info="+info); 
			SourceDataLine line = (SourceDataLine) AudioSystem.getLine(info); 
			// 从混频器获得源数据行 
			System.out.println("line="+line); 
			line.open(baseFormat);// 打开具有指定格式的行，这样可使行获得所有所需的系统资源并变得可操作。 
			line.start();// 允许数据行执行数据 I/O 
			int BUFFER_SIZE = 256;

			audioData = new byte[BUFFER_SIZE]; 
			while (intBytes != -1) 
			{ 
				intBytes = ais.read(audioData, 0, BUFFER_SIZE);// 从音频流读取指定的最大数量的数据字节，并将其放入给定的字节数组中。 
				if (intBytes >= 0) 
				{ 
					int outBytes = line.write(audioData, 0, intBytes);// 通过此源数据行将音频数据写入混频器。 
				} 
			}

		} catch (Exception e) 
		{ 
			e.printStackTrace(); 
		} 
	} 
/** This method is called from within the constructor to 
* initialize the form. 
* WARNING: Do NOT modify this code. The content of this method is 
* always regenerated by the Form Editor. 
*/ 
// <editor-fold defaultstate="collapsed" desc=" 生成的代码 "> 
	private void initComponents() 
	{
		setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); 
		javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); 
		getContentPane().setLayout(layout); 
		layout.setHorizontalGroup( 
				layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGap(0, 400, Short.MAX_VALUE)); 
		layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGap(0, 300, Short.MAX_VALUE)); 
		pack(); 
	}// </editor-fold>

/** 
* @param args the command line arguments 
*/ 
	public static void main(String args[]) 
	{ 
		Musicline msl=new Musicline(); 
		msl.setVisible(true); 
		Thread yh=new Thread(msl); 
		yh.start(); 
		msl.play();
	}

}




package com.xiaoer.service;

import java.awt.*;
import javax.swing.*; 
 
public class Func extends JFrame
{ 
	/**
	  *<br>方法说明：主方法
 	  *<br>输入参数：
 	  *<br>返回类型：
 	  */
	public static void main(String[] args)
	{
		Func db = new Func();
		db.update();
	}
	/**
   	  *<br>方法说明：构造器，显示窗体
	  *<br>输入参数：
 	  *<br>返回类型：
 	  */ 
	Func()
	{
		super("Function");
		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		setSize(310,310);
		show();
	}
	/**
	  *<br>方法说明：更新画面
 	  *<br>输入参数：
 	  *<br>返回类型：
 	  */ 
	public void update()
	{
		repaint();
  }
	/**
	  *<br>方法说明：转换坐标点
 	  *<br>输入参数：
 	  *<br>返回类型：
 	  */
	double f(double x) 
	{  
       return (Math.sin(2*x)+Math.cos(3*x)); 
	}
	/**
	  *<br>方法说明：绘制坐标图
	  *<br>输入参数：
 	  *<br>返回类型：
 	  */  
	public void paint(Graphics g) 
	{ 
      	 double x0,x1,y0,y1,xd,yd; 
      	 double max=5.0; 
      	 int w,h,hw,hh; 
      	 //获取屏幕的尺寸
      	 w=getSize().width; 
      	 h=getSize().height;
      	 hw=w/2; hh=h/2;
      	 //在屏幕上输出字符
      	 g.drawString("Sin[2x]+Cos[3x]",10,40);
      	 g.setColor(Color.red);  
      	 g.drawString("0",hw+5,hh+12); 
      	 g.drawString(""+max,hw-20,40);
      	 g.drawString(""+max,w-20,hh+12);
      	 //绘制X轴坐标
      	 g.drawLine(0,hh,w,hh);
      	 //绘制Y轴坐标
      	 g.drawLine(hw,0,hw,h);
      	 xd=2*max/w;//计算X增量
      	 yd=hh/max; //计算y增量
      	 g.setColor(Color.blue);
      	 //使用增量绘制一小段线，最终组成曲线图形。 
      	 for (int x=0 ; x<w-1; x++) 
      	 { 
      		 x0=-max+x*xd; y0=f(x0)*yd; 
      		 x1=x0+xd;     y1=f(x1)*yd; 
      		 g.drawLine(x,(int)(hh-y0),x+1,(int)(hh-y1));
      	 } 
	}
}