java JMF的使用

一、jmf 开发环境的设置

下载jmf windows performace pack(我已经下载了，可直接下我提供的包)

http://java.sun.com/products/java-media/jmf/2.1.1/setup.html

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 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 Demo001 extends PlayerFrame {

	public Demo001() {
		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 type = BufferedImage.TYPE_INT_RGB;
			if (hasAlpha) {
				type = BufferedImage.TYPE_INT_ARGB;
			}
			bimage = new BufferedImage(image.getWidth(null), image
					.getHeight(null), type);
		}

		// Copy image to buffered image
		Graphics g = bimage.createGraphics();

		// Paint the image onto the buffered image
		g.drawImage(image, 0, 0, null);
		g.dispose();

		return bimage;
	}

	private MediaLocator autoDetect() {// 自动识别功能函数
		MediaLocator ml = null; // 视频采集设备对应的MediaLocator
		VideoFormat currentFormat = null;// 用户定制获得视频采集设备支持的格式
		Format setFormat = null;// 用户定制视频采集设备输出的格式
		Format[] videoFormats = null;// 视频采集设备支持的所有格式
		System.out.println(" AutoDetect for VFW");// VFW:微软的 Video for Windows
		// 获得当前所有设备列表
		Vector deviceList = CaptureDeviceManager.getDeviceList(null);
		CaptureDeviceInfo device = CaptureDeviceManager.getDevice(url); 
		if (deviceList != null) {
			// 根据设备列表，找出可用设备名称
			for (int i = 0; i < deviceList.size(); i++) {
				try {
					CaptureDeviceInfo di = (CaptureDeviceInfo) deviceList
							.elementAt(i);
					// 如果设备名称以vfw开头
					if (di.getName().startsWith("vfw:")) {
						// 获得所有支持RGB格式
						videoFormats = di.getFormats();
						for (int j = 0; j < videoFormats.length; j++) {
							// 我们只需要第一种RGB格式
							if (videoFormats[j] instanceof RGBFormat) {
								currentFormat = (RGBFormat) videoFormats[i];
								break;
							}
						}
						if (currentFormat == null) {
							System.err.println("Search For RGBFormat Failed");
							System.exit(-1);
						}
						// 通过设备，获得MediaLocator，这个很重要
						ml = di.getLocator();
					}
				} catch (Exception npe) {
					System.err.println("Unable to get Processor for device");
					System.exit(-1);
				}
			}
		} else {
			System.err.println("No Capture Device OK");
			System.exit(-1);
		}
		mediaLocator = ml;
		return ml;// 返回可用的设备medialocator
	}

	public static void main(String[] args) throws NoPlayerException,
			IOException {
		Demo001 demo = new Demo001();
		demo.setSize(100, 100);
		demo.autoDetect();
		demo.init();
		demo.play();
		demo.setVisible(true);
	}
}

评论

5 楼 zxcv193188 2012-12-17  

感谢楼主  

4 楼 JoeBaby_ 2012-08-17  

非常感谢，看文档的时候觉得JMF好难的样子，但是看过代码后思路和概念清晰多了，嗨是代码更直观，非常感谢你的分享。我转载了你的文章并写明了出处

3 楼 androidzjb 2012-06-14  

谢谢你的分享， 

2 楼 wuzijingaip 2011-08-24  

下不了自然是网络问题，哈哈

1 楼 JingAi_jia 2011-08-24  

楼主，怎么下一半就下不了了？