使用JMF實現java寫自己的視訊播放器
阿新 • • 發佈:2019-01-07
JMF這個多媒體開發框架太牛了,簡單的幾句程式碼就能實現一個視訊播放器的開發,厲害,就是支援的格式少了一些,沒關係,這個視訊播放器可以播放mpg,avi,fvl等等,想播放其他的請開發自己的外掛,下面將程式碼貼上去
效果圖如下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 { //準備一個要播放的視訊檔案的URL url = new URL("file:/d:/2.mpg"); } catch (MalformedURLException e) { e.printStackTrace(); } try { //通過呼叫Manager的createPlayer方法來建立一個Player的物件 //這個物件是媒體播放的核心控制物件 player = Manager.createPlayer(url); } catch (NoPlayerException e1) { e1.printStackTrace(); } catch (IOException e1) { e1.printStackTrace(); } //對player物件註冊監聽器,能噶偶在相關事件發生的時候執行相關的動作 player.addControllerListener(this); //讓player物件進行相關的資源分配 player.realize(); } private int videoWidth = 0; private int videoHeight = 0; private int controlHeight = 30; private int insetWidth = 10; private int insetHeight = 30; //監聽player的相關事件 public void controllerUpdate(ControllerEvent ce) { if (ce instanceof RealizeCompleteEvent) { //player例項化完成後進行player播放前預處理 player.prefetch(); } else if (ce instanceof PrefetchCompleteEvent) { if (visual != null) return; //取得player中的播放視訊的元件,並得到視訊視窗的大小 //然後把視訊視窗的元件新增到Frame視窗中, if ((visual = player.getVisualComponent()) != null) { Dimension size = visual.getPreferredSize(); videoWidth = size.width; videoHeight = size.height; f.add(visual); } else { videoWidth = 320; } //取得player中的視訊播放控制條元件,並把該元件新增到Frame視窗中 if ((control = player.getControlPanelComponent()) != null) { controlHeight = control.getPreferredSize().height; f.add(control, BorderLayout.SOUTH); } //設定Frame視窗的大小,使得滿足視訊檔案的預設大小 f.setSize(videoWidth + insetWidth, videoHeight + controlHeight + insetHeight); f.validate(); //啟動視訊播放元件開始播放 player.start(); mediaPlayer.start(); } else if (ce instanceof EndOfMediaEvent) { //當播放視訊完成後,把時間進度條恢復到開始,並再次重新開始播放 player.setMediaTime(new Time(0)); player.start(); } } }