最近项目要求能对视频和语音进行同步合成，以及对视频进行画面与语音的分离功能，由于没有接触过这类东西，所以想从最基础做起，于是在网上找到sun公司开源的jmf架构，看到网上也有不少小例子，就开始对安装jmf并配置了开发环境，将小例子粘到自己的新建工程下，结果发现不好用，没办法自己也顺手写了一个都发生同样的问题，希望有经验的朋友能够帮助解决一下。
我现在干脆就用网上的一个例子来说明问题，实现的功能是，利用点击拍照按钮能，启动摄像头并将捕捉摄像头的画面将生成图片保存到物理硬盘中，代码如下：
- Java code
package com.creatplay;import java.awt.BorderLayout; import java.awt.Color; import java.awt.Component; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Panel; import java.awt.Rectangle; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.awt.image.BufferedImage; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import javax.media.Buffer; import javax.media.CannotRealizeException; import javax.media.CaptureDeviceInfo; import javax.media.CaptureDeviceManager; import javax.media.Manager; import javax.media.MediaLocator; import javax.media.NoPlayerException; import javax.media.Player; import javax.media.control.FrameGrabbingControl; import javax.media.format.VideoFormat; import javax.media.util.BufferToImage; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import com.sun.image.codec.jpeg.ImageFormatException; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGEncodeParam; import com.sun.image.codec.jpeg.JPEGImageEncoder; public class FirstCapture extends JPanel implements ActionListener{ private CaptureDeviceInfo captureDeviceInfo=null; private MediaLocator mediaLocator=null; private static Player player=null; private ImagePanel imagePanel=null; private JButton capture; private Buffer buffer=null; private VideoFormat videoFormat=null; private BufferToImage bufferToImage=null; private Image image=null; public FirstCapture() { setLayout(new BorderLayout()); setSize(320,550); String str="vfw:Microsoft WDM Image Capture (Win32):0"; captureDeviceInfo=CaptureDeviceManager.getDevice(str); // MediaLocator mediaLocator=captureDeviceInfo.getLocator(); mediaLocator=new MediaLocator("vfw://0"); imagePanel=new ImagePanel(); capture=new JButton("拍照"); capture.addActionListener(this); try { player=Manager.createRealizedPlayer(mediaLocator); player.start(); Component comp; Component comp1; if((comp=player.getVisualComponent())!=null) add(comp,BorderLayout.NORTH); // if((comp1=player.getControlPanelComponent())!=null) // add(comp1,BorderLayout.CENTER); } catch (NoPlayerException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (CannotRealizeException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } add(imagePanel,BorderLayout.SOUTH); add(capture,BorderLayout.CENTER); } @Override public void print(Graphics g) { // TODO Auto-generated method stub super.print(g); g.setColor(new Color(255,0,0)); g.drawLine(0, 0, 100, 100); } public static void main(String[] args) { // TODO Auto-generated method stub JFrame f = new JFrame("FirstCapture"); FirstCapture cf = new FirstCapture(); f.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { player.close(); System.exit(0);}}); f.add("Center",cf); f.pack(); f.setSize(new Dimension(320,550)); f.setVisible(true); } public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub FrameGrabbingControl fgc=(FrameGrabbingControl)player.getControl("javax.media.control.FrameGrabbingControl"); buffer=fgc.grabFrame(); bufferToImage=new BufferToImage((VideoFormat)buffer.getFormat()); image=bufferToImage.createImage(buffer); imagePanel.setImage(image); saveImage(image,"D:/test.jpg"); } public static void saveImage(Image image,String path) { BufferedImage bi=new BufferedImage(image.getWidth(null),image.getHeight(null),BufferedImage.TYPE_INT_RGB); Graphics2D g2 = bi.createGraphics(); g2.drawImage(image, null, null); FileOutputStream fos=null; try { fos=new FileOutputStream(path); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } JPEGImageEncoder je=JPEGCodec.createJPEGEncoder(fos); JPEGEncodeParam jp=je.getDefaultJPEGEncodeParam(bi); jp.setQuality(0.5f, false); je.setJPEGEncodeParam(jp); try { je.encode(bi); fos.close(); } catch (ImageFormatException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } class ImagePanel extends Panel { public Image myimg = null; public ImagePanel() { setLayout(null); setSize(320,240); } public void setImage(Image img) { this.myimg = img; repaint(); } public void paint(Graphics g) { if (myimg != null) { g.drawImage(myimg, 0, 0, this); } } } }