使用JMF实现java视频播放器
JMF这个多媒体开发框架太牛了,简单的几句代码就能实现一个视频播放器的开发,厉害,就是支持的格式少了一些,没关系,这个视频播放器可以播放mpg,avi,fvl等等,想播放其他的请开发自己的插件,下面将代码贴上去
package com.bird.jmf; import java.awt.BorderLayout; import java.awt.Component; import java.awt.Dimension; import java.awt.Frame; import java.awt.Panel; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; import javax.media.CannotRealizeException; import javax.media.ControllerEvent; import javax.media.ControllerListener; import javax.media.EndOfMediaEvent; import javax.media.Manager; import javax.media.MediaLocator; import javax.media.NoPlayerException; import javax.media.Player; import javax.media.PrefetchCompleteEvent; import javax.media.RealizeCompleteEvent; import javax.media.Time; @SuppressWarnings({ "restriction", "unused" }) public class JMFSample implements ControllerListener { public static void main(String[] args) { JMFSample sp = new JMFSample(); sp.play(); } private Player mediaPlayer; private Frame f; private Player player; private Panel panel; private Component visual; private Component control = null; public void play(){ f = new Frame("JMF Sample1"); f.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent we) { if(player != null) { player.close(); } System.exit(0); } }); f.setSize(500,400); f.setVisible(true); URL url = null; try { //准备一个要播放的视频文件的URL url = new URL("file:/d:/2.mpg"); } catch (MalformedURLException e) { e.printStackTrace(); } try { //通过调用Manager的createPlayer方法来创建一个Player的对象 //这个对象是媒体播放的核心控制对象 player = Manager.createPlayer(url); } catch (NoPlayerException e1) { e1.printStackTrace(); } catch (IOException e1) { e1.printStackTrace(); } //对player对象注册监听器,能噶偶在相关事件发生的时候执行相关的动作 player.addControllerListener(this); //让player对象进行相关的资源分配 player.realize(); } private int videoWidth = 0; private int videoHeight = 0; private int controlHeight = 30; private int insetWidth = 10; private int insetHeight = 30; //监听player的相关事件 public void controllerUpdate(ControllerEvent ce) { if (ce instanceof RealizeCompleteEvent) { //player实例化完成后进行player播放前预处理 player.prefetch(); } else if (ce instanceof PrefetchCompleteEvent) { if (visual != null) return; //取得player中的播放视频的组件,并得到视频窗口的大小 //然后把视频窗口的组件添加到Frame窗口中, if ((visual = player.getVisualComponent()) != null) { Dimension size = visual.getPreferredSize(); videoWidth = size.width; videoHeight = size.height; f.add(visual); } else { videoWidth = 320; } //取得player中的视频播放控制条组件,并把该组件添加到Frame窗口中 if ((control = player.getControlPanelComponent()) != null) { controlHeight = control.getPreferredSize().height; f.add(control, BorderLayout.SOUTH); } //设定Frame窗口的大小,使得满足视频文件的默认大小 f.setSize(videoWidth + insetWidth, videoHeight + controlHeight + insetHeight); f.validate(); //启动视频播放组件开始播放 player.start(); mediaPlayer.start(); } else if (ce instanceof EndOfMediaEvent) { //当播放视频完成后,把时间进度条恢复到开始,并再次重新开始播放 player.setMediaTime(new Time(0)); player.start(); } } }
效果图:
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