第7周作业4——JMF（Java多媒体框架）的应用之视频播放器

import java.awt.*;
import java.io.*;
import java.util.*;
import javax.media.*;
import javax.media.format.*;
import javax.swing.*;
public class VideoPlayer implements ControllerListener {
Vector audioCapDevList = null;
Vector videoCapDevList = null;
CaptureDeviceInfo audioCapDevInfo = null;
CaptureDeviceInfo videoCapDevInfo = null;
MediaLocator audioCapDevLoc = null;
MediaLocator videoCapDevLoc = null;
Player audioPlayer;     Player videoPlayer;
public void initAudioCapDevLoc() {
//这里可以填写其它的音频编码格式，具体请看AudioFormat类
audioCapDevList = CaptureDeviceManager.getDeviceList(new AudioFormat(
AudioFormat.LINEAR));
if ((audioCapDevList.size() > 0)) {             //或许有几个CaptureDevice,这里取第一个
audioCapDevInfo = (CaptureDeviceInfo) audioCapDevList.elementAt(0);
audioCapDevLoc = audioCapDevInfo.getLocator();
}
else {
System.out.println("找不到音频采集设备");
System.exit(0);         }      }
public void initVideoCapDevLoc() {
//这里可以填写其它的编码视频格式，具体请看VideoFormat类
videoCapDevList = CaptureDeviceManager.getDeviceList(new VideoFormat(
VideoFormat.YUV));
if ((videoCapDevList.size() > 0)) {
//或许有几个CaptureDevice,这里取第一个             videoCapDevInfo = (CaptureDeviceInfo) videoCapDevList.elementAt(0);
videoCapDevLoc = videoCapDevInfo.getLocator();         } else {
System.out.println("找不到视频采集设备");
System.exit(0);         }      }
public void initAudioPlayer() {
try {
audioPlayer = Manager.createPlayer(audioCapDevLoc);
} catch (NoPlayerException ex) {         } catch (IOException ex) {         }
//增加一个侦听器，侦听player状态的改变
audioPlayer.addControllerListener(this);
audioPlayer.realize();     }
public void initVideoPlayer() {         try {
videoPlayer = Manager.createPlayer(videoCapDevLoc);         } catch (NoPlayerException ex) {         } catch (IOException ex) {         }
//增加一个侦听器，侦听player状态的改变
videoPlayer.addControllerListener(this);
videoPlayer.realize();     }
public void stopAndClosePlayer(){         audioPlayer.stop();
audioPlayer.close();
videoPlayer.stop();
videoPlayer.close();     }
public synchronized void controllerUpdate(ControllerEvent ce) {
Player p = (Player) ce.getSourceController();
JFrame jFrame = new JFrame();              Component com;
if (p == null) {             return;         }
//如果player的状态变为Realized
if (ce instanceof RealizeCompleteEvent) {
if ((com = p.getControlPanelComponent()) != null) {                 jFrame.add(com, BorderLayout.SOUTH);             }
if ((com = p.getVisualComponent()) != null) {                 jFrame.add(com, BorderLayout.NORTH);             }
jFrame.setVisible(true);                          jFrame.pack();
jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
p.start();
}
}
public static void main(String args[]) {
VideoPlayer cap = new VideoPlayer();         cap.initAudioCapDevLoc();
cap.initVideoCapDevLoc();
cap.initAudioPlayer();
cap.initVideoPlayer();
try {
Thread.currentThread().sleep(20000);//20秒后停止并关闭播放器
}
catch (InterruptedException ex) {         }
cap.stopAndClosePlayer();
}
}