java视频播放器的实现

package com.tainyisoft.jmf;

import java.awt.BorderLayout;

import https://www.360docs.net/doc/af1051417.html,ponent;

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 https://www.360docs.net/doc/af1051417.html,.MalformedURLException;

import https://www.360docs.net/doc/af1051417.html,.URL;

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) { JMFSamplesp = 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的URL

//file:/home/gsoft2-3/桌面/1.avi

url = new URL("home/gsoft2-3/桌面/1.avi");

} catch (MalformedURLException e) {

e.printStackTrace();

}

try {

//通过调用Manager的createPlayer方法来创建一个Player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，能监听相关的时间发生时执行相应的动作player.addControllerListener(this);

//让player对象进行相关的资源分配

player.realize();

}

private intvideoWidth = 0;

private intvideoHeight = 0;

private intcontrolHeight = 30;

private intinsetWidth = 10;

private intinsetHeight = 30;

//监听player的相关事件

public void controllerUpdate(ControllerEventce) {

if (ceinstanceofRealizeCompleteEvent) {

//player实例化完成后进行player播放前预处理

player.prefetch();

} else if (ceinstanceofPrefetchCompleteEvent) {

if (visual != null)

return;

//取得player中的播放视频的组建，并得到视频窗口的大小

//然后把视频窗口的组建添加到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，并把改组件添加到Frame窗口中

if ((control = player.getControlPanelComponent()) != null) {

controlHeight = control.getPreferredSize().height;

f.add(control, BorderLayout.SOUTH);

}

//设定Framge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 (ceinstanceofEndOfMediaEvent) {

//当播放视频完成后，把时间进度恢复到开始，并在次重新播放

player.setMediaTime(new Time(0));

player.start();

}

}

}