java JMF的使用
望有这方面经验的人交流一下心得
一、jmf 开发环境的设置
安装
设置环境变量路径
set JMFHOME=C:\JMF2.1.1
set CLASSPATH=%JMFHOME%\lib\jmf.jar;%JMFHOME%\lib\sound.jar;.;%CLASSPATH%
二、播放器的例子代码(copy 到 Eclipse 、导包(可运行)
package jmf.test;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.HeadlessException;
import java.awt.Image;
import java.awt.Transparency;
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.awt.image.ColorModel;
import java.awt.image.PixelGrabber;
import java.io.File;
import java.io.IOException;
import java.util.Vector;
import javax.imageio.ImageIO;
import javax.media.Buffer;
import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.Format;
import javax.media.MediaLocator;
import javax.media.NoPlayerException;
import javax.media.control.FrameGrabbingControl;
import javax.media.format.RGBFormat;
import javax.media.format.VideoFormat;
import javax.media.protocol.DataSource;
import javax.media.protocol.PushBufferDataSource;
import javax.media.util.BufferToImage;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JPanel;
import jmapps.jmstudio.CaptureDialog;
import jmapps.ui.PlayerFrame;
import jmapps.util.CDSWrapper;
import jmapps.util.JMFUtils;
public class JMFDemo extends PlayerFrame {
public JMFDemo() {
super(null, "视频捕获窗口");
}
DataSource dataSource;
private CaptureDeviceInfo infor;
private MediaLocator mediaLocator;
String str1 = "vfw:Logitech USB Video Camera:0";
String str2 = "vfw:Microsoft WDM Image Capture (Win32):0";
private String url = "vfw:Microsoft WDM Image Capture (Win32):0";
private Component com;
private JPanel panel;
private int captureCount = 0;
FrameGrabbingControl controlGrabber;
public void play() {
if (mediaPlayerCurrent.getState() != mediaPlayerCurrent.Started) {
mediaPlayerCurrent.start();
}
}
private void init() throws NoPlayerException, IOException {
// setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
String nameCaptureDeviceAudio = null;
String nameCaptureDeviceVideo = null;
CaptureDialog dialogCapture = new CaptureDialog(this, null);
dialogCapture.show();
if (dialogCapture.getAction() == CaptureDialog.ACTION_CANCEL)
return;
CaptureDeviceInfo cdi = dialogCapture.getAudioDevice();
if (cdi != null && dialogCapture.isAudioDeviceUsed())
nameCaptureDeviceAudio = cdi.getName();
cdi = dialogCapture.getVideoDevice();
if (cdi != null && dialogCapture.isVideoDeviceUsed())
nameCaptureDeviceVideo = cdi.getName();
dataSource = JMFUtils.createCaptureDataSource(nameCaptureDeviceAudio,
dialogCapture.getAudioFormat(), nameCaptureDeviceVideo,
dialogCapture.getVideoFormat());
DataSource cdswrapper = new CDSWrapper(
(PushBufferDataSource) dataSource);
dataSource = cdswrapper;
dataSource.connect();
open(dataSource);
JPanel controlPanel = new JPanel();
controlPanel.setName("controlPnael is here");
add(BorderLayout.SOUTH, controlPanel);
JButton capture = new JButton("Capture Image");
capture.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
mediaPlayerCurrent.stop();
Buffer bufferFrame;
BufferToImage bufferToImage;
Image image;
BufferedImage bi;
controlGrabber = (FrameGrabbingControl) mediaPlayerCurrent
.getControl("javax.media.control.FrameGrabbingControl");
bufferFrame = controlGrabber.grabFrame();
bufferToImage = new BufferToImage((VideoFormat) bufferFrame
.getFormat());
image = bufferToImage.createImage(bufferFrame);
File out = new File("capture" + (++captureCount) + ".png");
try {
bi = toBufferedImage(image);
ImageIO.write(bi, "png", out);
} catch (IOException e1) {
e1.printStackTrace();
}
mediaPlayerCurrent.start();
}
});
controlPanel.add(BorderLayout.CENTER, capture);
JButton playStop = new JButton("stop");
// add(BorderLayout.SOUTH,playControl);
playStop.addActionListener(new ActionListener() {
// @Override
public void actionPerformed(ActionEvent arg0) {
mediaPlayerCurrent.stop();
}
});
controlPanel.add(BorderLayout.EAST, playStop);
JButton playStart = new JButton("start");
// add(BorderLayout.SOUTH,playControl);
playStart.addActionListener(new ActionListener() {
// @Override
public void actionPerformed(ActionEvent arg0) {
// mediaPlayerCurrent.stop();
if (mediaPlayerCurrent.getState() != mediaPlayerCurrent.Started) {
mediaPlayerCurrent.start();
}
}
});
controlPanel.add(BorderLayout.WEST, playStart);
addWindowListener(new WindowAdapter() {
// @Override
public void windowClosing(WindowEvent e) {
mediaPlayerCurrent.close();
dataSource.disconnect();
System.out.println("exit.....");
System.exit(0);
}
});
}
public static boolean hasAlpha(Image image) {
// If buffered image, the color model is readily available
if (image instanceof BufferedImage) {
BufferedImage bimage = (BufferedImage) image;
return bimage.getColorModel().hasAlpha();
}
// Use a pixel grabber to retrieve the image's color model;
// grabbing a single pixel is usually sufficient
PixelGrabber pg = new PixelGrabber(image, 0, 0, 1, 1, false);
try {
pg.grabPixels();
} catch (InterruptedException e) {
}
// Get the image's color model
ColorModel cm = pg.getColorModel();
return cm.hasAlpha();
}
public static BufferedImage toBufferedImage(Image image) {
if (image instanceof BufferedImage) {
return (BufferedImage) image;
}
// This code ensures that all the pixels in the image are loaded
image = new ImageIcon(image).getImage();
// Determine if the image has transparent pixels; for this method's
// implementation, see e661 Determining If an Image Has Transparent
// Pixels
boolean hasAlpha = hasAlpha(image);
// Create a buffered image with a format that's compatible with the
// screen
BufferedImage bimage = null;
GraphicsEnvironment ge = GraphicsEnvironment
.getLocalGraphicsEnvironment();
try {
// Determine the type of transparency of the new buffered image
int transparency = Transparency.OPAQUE;
if (hasAlpha) {
transparency = Transparency.BITMASK;
}
// Create the buffered image
GraphicsDevice gs = ge.getDefaultScreenDevice();
GraphicsConfiguration gc = gs.getDefaultConfiguration();
bimage = gc.createCompatibleImage(image.getWidth(null), image
.getHeight(null), transparency);
} catch (HeadlessException e) {
// The system does not have a screen
System.err.println("The system does not have a screen!");
System.exit(-1);
}
if (bimage == null) {
// Create a buffered image using the default color model
int ty
补充：软件开发 , Java ,
