用java做一个自己的音乐播放器

/* * 作者:lightp2p@gmail.com * 网站:http://hi.baidu.com/mqlayer */ package player; import java.awt.Container; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowEvent; import java.awt.event.WindowListener; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.io.PrintStream; import javax.swing.JButton; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JSlider; import javax.swing.SwingUtilities; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; import com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel; import net.miginfocom.swing.MigLayout; public class Player implements WindowListener{ static Config config; static JFrame mainFrame; VideoPanel videoPalel; JPanel controlBar; JButton button_Open; JButton button_Play; JButton button_Stop; PlayerProgressBar progressBar; JSlider volumeSlider; String [] cmd ; Process proc ; Thread t1; Thread t2; String mplayerPath=".\\mplayer\\mplayer.exe";//mplayer程序路径 String mediaPath="";//播放文件路径 int length=0;//视频长度 int videoWidth;//视频宽 int videoHeight;//视频高 float rate=1.2f;//宽高比 int playOffset=0;//当前播放时间 int volume=100;//音量 //播放器状态 boolean isPlay=false; boolean isPause=false; public static void main(String[] args) { try { UIManager.setLookAndFeel(new NimbusLookAndFeel()); } catch (UnsupportedLookAndFeelException e) { e.printStackTrace(); } //实例化一个播放器 Player player=new Player(); mainFrame=new JFrame("Java Player"); mainFrame.setBounds(config.playerBound); mainFrame.addWindowListener(player); Container cp=mainFrame.getContentPane(); cp.setLayout(new MigLayout("insets 0 0 0 0")); //添加播放器视频面板 cp.add(player.getVideoPanel(),"width :2000:,height :2000:,wrap"); //添加播放器控制面板 cp.add(player.getControlBar(),""); mainFrame.setVisible(true); } Player(){ loadConfig(); videoPalel=new VideoPanel(this); controlBar=new JPanel(); controlBar.setLayout(new MigLayout()); progressBar=new PlayerProgressBar(this); controlBar.add(progressBar,"width :2000:,span,wrap"); JPanel p2=new JPanel(); p2.setLayout(new MigLayout("insets 0 0 0 0,align center")); controlBar.add(p2,"width :2000:,span,wrap"); button_Open=new JButton("Open..."); p2.add(button_Open); button_Open.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e) { final JFileChooser fileChooser = new JFileChooser(config.lastOpenPath); fileChooser.setDialogTitle("打开文件"); fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY); fileChooser.setMultiSelectionEnabled(true); int status = fileChooser.showOpenDialog(button_Open); if (status == JFileChooser.APPROVE_OPTION) { final File[] selectedFile = fileChooser.getSelectedFiles(); for(File f:selectedFile){ config.lastOpenPath=f.getParent(); play(f.getAbsolutePath()); } } } }); button_Play=new JButton("Play"); p2.add(button_Play); button_Play.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e) { if(isPlay){ pause(); }else if(mediaPath!=null){ play(mediaPath); } } }); button_Stop=new JButton("Stop"); p2.add(button_Stop); button_Stop.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e) { stop(); } }); volumeSlider=new JSlider(); p2.add(volumeSlider,"width ::70"); volumeSlider.setValue(volume); volumeSlider.addChangeListener(new ChangeListener() { public void stateChanged(ChangeEvent e) { if ((JSlider) e.getSource() == volumeSlider) { setVolume(volumeSlider.getValue()); volume=volumeSlider.getValue(); } } }); //刷新播放进度显示 Thread setProgressDelay = new Thread() { public void run() { while (true) { SwingUtilities.invokeLater(new Runnable(){ public void run() { if (progressBar != null) { if(mediaPath!=null){ progressBar.setTime(playOffset, length); } } } }); try { Thread.sleep(500); } catch (InterruptedException e) { e.printStackTrace(); } } } }; setProgressDelay.start(); } //播放文件 void play(String path){ stop(); mediaPath=path; isPlay=true; button_Play.setText("Pause"); //调用命令行,更多选项请参考mplayer文档 cmd = new String[] { mplayerPath,//mplayer路径 "-vo","directx",//视频驱动 "-identify", //输出详情 "-slave", //slave模式播放 "-wid",String.valueOf(videoPalel.getWid()),//视频窗口的window handle "-colorkey", "0x030303",//视频窗口的背景色 "-osdlevel", String.valueOf(1),//osd样式 path //播放文件路径 }; try { proc = Runtime.getRuntime().exec(cmd); } catch (IOException e1) { e1.printStackTrace(); return; } //读取并解析mplayer的输出信息 final InputStream is1 = proc.getErrorStream(); final InputStream is2 = proc.getInputStream(); final Runnable errorReader = new Runnable() { public void run() { try { final BufferedReader lReader = new BufferedReader(new InputStreamReader(is1)); for (String l = lReader.readLine(); l != null ; l = lReader.readLine()) { // System.out.println("ERROR "+l); } } catch (Throwable t) { t.printStackTrace(); } } }; final Runnable standReader = new Runnable() { public void run() { try { final BufferedReader lReader = new BufferedReader(new InputStreamReader(is2)); String l=""; while ((l=lReader.readLine())!=null) { if (l.length() >= 10) { String s2 = l.substring(0, 9); if (s2.equals("ID_LENGTH")) { int index = l.indexOf("."); String s1 = l.substring(10,index); length = Integer.valueOf(s1); } } //解析播放时间 if(l.length()>70&&l.startsWith("A:")){ int index = l.indexOf("."); String s3 = l.substring(2, index); int index2 = 0; while (true) { int index3 = s3.indexOf(" ", index2); if (index3 != -1) { index2 = index3 + 1; } else { break; } } String s4 = s3.substring(index2); playOffset = Integer.valueOf(s4); } if (l.length() >= 15) { String s4 = l.substring(0, 15); //解析视频宽度 if (s4.equals("ID_VIDEO_HEIGHT")) { String s1 = l.substring(16); videoHeight = Integer.valueOf(s1); rate = (float) videoWidth/ (float) videoHeight; videoPalel.doLayout(); } } if (l.length() >= 14) { String s3 = l.substring(0, 14); //解析视频高度 if (s3.equals("ID_VIDEO_WIDTH")) { String s1 = l.substring(15); videoWidth = Integer.valueOf(s1); } } if (l.startsWith("ID_LENGTH")) { int index = l.indexOf("="); //解析视频长度 if (index > 0) { String value = l.substring(index + 1); float intvalue=Float.valueOf(value); length=(int)intvalue; } } } } catch (Throwable t) { t.printStackTrace(); } } }; t1 = new Thread(errorReader); t2 = new Thread(standReader); t1.start(); t2.start(); //监视mplayer退出 Thread waitThread=new Threa