JMF摄像头
使用JMF可以同时提取视频流和音频流,然后通过数据源的混合,可以达到视频音频同时收集和播放的功能。其中主
要是通过数据源的混合,也就是视频流和音频流的数据源的混合。下面我们来写一个例子。通过开启摄像头的麦克风实
现同时收集视频和音频。:
package com.test;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.media.ControllerEvent;
import javax.media.ControllerListener;
import javax.media.EndOfMediaEvent;
import javax.media.Manager;
import javax.media.MediaLocator;
import javax.media.Player;
import javax.media.PrefetchCompleteEvent;
import javax.media.RealizeCompleteEvent;
import javax.media.Time;
import javax.media.protocol.DataSource;
public class MyVideoPlayer implements ControllerListener {
public static void main(String[] args) {
MyVideoPlayer sp = new MyVideoPlayer();
sp.play();
}
private Frame f;
// private Player videoplayer;
// private Player audioplayer;
private Player dualPlayer;
private Component visual;
private Component control = null;
private MediaLocator mediaLocator;
private MediaLocator audioLocator;
public void play() {
f = new Frame("MyPlayer");
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent we) {
if (dualPlayer != null) {
dualPlayer.close();
}
System.exit(0);
}
});
f.setSize(500, 400);
f.setVisible(true);
try {
mediaLocator = new MediaLocator("vfw://0");// 此类描述媒体目录的地址????
audioLocator = new MediaLocator("javasound://44100");
} catch (Exception e) {
System.out.println(e.toString());
}
try {
DataSource[] dataSources = new DataSource[2];
dataSources[0] = Manager.createDataSource(mediaLocator);
dataSources[1] = Manager.createDataSource(audioLocator);
DataSource ds = Manager.createMergingDataSource(dataSources);
dualPlayer = Manager.createPlayer(ds);
} catch (Exception e1) {
e1.printStackTrace();
}
dualPlayer.realize();
dualPlayer.addControllerListener(this);
}
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
dualPlayer.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 = dualPlayer.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 = dualPlayer.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
dualPlayer.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
dualPlayer.setMediaTime(new Time(0));
// videoplayer.start();
// audioplayer.start();
dualPlayer.start();
}
}
}