在这周 我们继续接着上周的工程配置做视频播放器 这周我们完成了视频播放器的播放 播放，暂停，停止按钮的添加和功能实现，菜单栏的添加和功能实现 按原计划第十四周的任务基本完成 在制作过程中遇到了不少难题 如libvlc无法导入 布局结构设计问题 进度条功能实现等等一系列问题 在老师的帮助下和我们组共同努力下 终于算是基本解决这些问题 也将这周需要完成的界面和功能实现 这周的成果在下方
代码如下：
（1）videoplayer.main包 PlayMain类
import java.awt.EventQueue;
import java.io.File;
import javax.swing.JFileChooser;
import javax.swing.SwingWorker;
import com.sun.jna.NativeLibrary;
import uk.co.caprica.vlcj.binding.LibVlc;
import uk.co.caprica.vlcj.discovery.NativeDiscovery;
import uk.co.caprica.vlcj.runtime.RuntimeUtil;
import videoplayer.views.MainWindow;
public class PlayMain {
static MainWindow frame;
public static void main(String[] args) {
if(RuntimeUtil.isMac()){
NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(),"/home/vlc");
System.out.println(LibVlc.INSTANCE.libvlc_get_version());
}else if(RuntimeUtil.isNix()){
NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(),"/home/linux/vlc/install/lib");
System.out.println(LibVlc.INSTANCE.libvlc_get_version());
}else if(RuntimeUtil.isWindows()){
NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(),"C:\\Program Files\\VideoLAN\\VLC");
System.out.println(LibVlc.INSTANCE.libvlc_get_version());
}
boolean found = new NativeDiscovery().discover();
System.out.println(found);
System.out.println(LibVlc.INSTANCE.libvlc_get_version());
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
frame = new MainWindow();
frame.setVisible(true);
frame.getMediaPlayer().prepareMedia("E:\\BaiduYunDownload\\haskjdhaskjdhkasjdhkasjhdkjasd.mkv");
//frame.getMediaPlayer().playMedia("E:\\BaiduYunDownload\\haskjdhaskjdhkasjdhkasjhdkjasd.mkv");
new SwingWorker<String, Integer>() {
@Override
protected String doInBackground() throws Exception {
while (true) {
long total = frame.getMediaPlayer().getLength();
long curr = frame.getMediaPlayer().getTime();
float percent = (float)curr/total;
publish((int)(percent*100));
Thread.sleep(100);
}
}
protected void process(java.util.List<Integer> chunks) {
for (int v : chunks) {
frame.getProgressBar().setValue(v);
}
}
}.execute();
}catch (Exception e) {
e.printStackTrace();
}
}
});
}
//播放方法
public static void play(){
frame.getMediaPlayer().play();
}
public static void pause(){
frame.getMediaPlayer().pause();
}
public static void stop(){
frame.getMediaPlayer().stop();
}
public static void jumpTo(float to) {
frame.getMediaPlayer().setTime((long)(to*frame.getMediaPlayer().getLength()));
}
public static void openVideo() {
JFileChooser chooser = new JFileChooser();
int v = chooser.showOpenDialog(null);
if (v == JFileChooser.APPROVE_OPTION) {
File file = chooser.getSelectedFile();
frame.getMediaPlayer().playMedia(file.getAbsolutePath());
}
}
public static void openSubtitle() {
JFileChooser chooser = new JFileChooser();
int v = chooser.showOpenDialog(null);
if (v == JFileChooser.APPROVE_OPTION) {
File file = chooser.getSelectedFile();
frame.getMediaPlayer().setSubTitleFile(file);
}
}
public static void exit() {
frame.getMediaPlayer().release();
System.exit(0);
}
}
（2）videoplayer.views包 MainWindow类
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.border.EmptyBorder;
import uk.co.caprica.vlcj.component.EmbeddedMediaPlayerComponent;
import uk.co.caprica.vlcj.player.embedded.EmbeddedMediaPlayer;
import videoplayer.main.PlayMain;
public class MainWindow extends JFrame {
private JPanel contentPane;
EmbeddedMediaPlayerComponent playerComponent;
private JPanel panel;
private JButton btnPlay;
private JButton btnPause;
private JButton btnStop;
private JPanel controlPanel;
private JProgressBar progress;
private JMenuBar menuBar;
private JMenu mnFile;
private JMenuItem mntmOpenVideo;
private JMenuItem mntmOpenSubtitle;
private JMenuItem mntmExit;
/**
* Launch the application.
*/
public static void main(String[] args) {
}
/**
* Create the frame.
*/
public MainWindow() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 600, 400);
menuBar = new JMenuBar();
setJMenuBar(menuBar);
mnFile = new JMenu("文件");
menuBar.add(mnFile);
mntmOpenVideo = new JMenuItem("打开视频");
mnFile.add(mntmOpenVideo);
mntmOpenSubtitle = new JMenuItem("导入字幕");
mnFile.add(mntmOpenSubtitle);
mntmExit = new JMenuItem("退出");
mnFile.add(mntmExit);
mntmOpenVideo.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
PlayMain.openVideo();
}
});
mntmOpenSubtitle.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
PlayMain.openSubtitle();
}
});
mntmExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
PlayMain.exit();
}
});
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
JPanel videopane = new JPanel();
contentPane.add(videopane, BorderLayout.CENTER);
videopane.setLayout(new BorderLayout(0, 0));
playerComponent = new EmbeddedMediaPlayerComponent();
videopane.add(playerComponent);
panel = new JPanel();
videopane.add(panel, BorderLayout.SOUTH);
panel.setLayout(new BorderLayout(0, 0));
controlPanel = new JPanel();
panel.add(controlPanel);
btnStop = new JButton("停止");
controlPanel.add(btnStop);
btnPlay = new JButton("播放");
controlPanel.add(btnPlay);
btnPause = new JButton("暂停");
controlPanel.add(btnPause);
progress = new JProgressBar();
progress.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
int x = e.getX();
PlayMain.jumpTo((float)x/progress.getWidth());
}
});
progress.setStringPainted(true);
panel.add(progress, BorderLayout.NORTH);
btnPause.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
PlayMain.pause();
}
});
btnPlay.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg0) {
PlayMain.play();
}
});
btnStop.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
PlayMain.stop();
}
});
}
public EmbeddedMediaPlayer getMediaPlayer(){
return playerComponent.getMediaPlayer();
}
public JProgressBar getProgressBar() {
return progress;
}
}
（二）下面是程序实现的图片
（1）代码中指定的视频可以播放，可以通过播放，暂停，停止按钮进行控制，进度条可以实现进度变化
（2）文件菜单栏下，打开视频，导出字幕，退出可以使用，有响应。
