Discussion :

[clebig]

Bonjour, existe-t'il des librairies pour travailler avec de la video (xvid ou divx par exemple) en Java ? Si oui lesquelles ?

Bon j'ai trouvé, JMF...Mais peut-on capturer du flux des caméra DV directement ?

[cladsam]

normalement oui via javax.media

Code :

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    * import java.awt.BorderLayout;
    * import java.awt.Component;
    * import java.awt.Dimension;
    * import java.awt.Frame;
    * import java.awt.Graphics;
    * import java.awt.Graphics2D;
    * import java.awt.Image;
    * import java.awt.Panel;
    * 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.FileOutputStream;
    *
    * import javax.media.Buffer;
    * import javax.media.CaptureDeviceInfo;
    * import javax.media.CaptureDeviceManager;
    * import javax.media.Manager;
    * import javax.media.MediaLocator;
    * 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.JComponent;
    *
    * import com.sun.image.codec.jpeg.JPEGCodec;
    * import com.sun.image.codec.jpeg.JPEGEncodeParam;
    * import com.sun.image.codec.jpeg.JPEGImageEncoder;
    *
    * public class SwingCapture extends Panel implements ActionListener
    * {
    * public static Player player = null;
    * public CaptureDeviceInfo di = null;
    * public MediaLocator ml = null;
    * public JButton capture = null;
    * public Buffer buf = null;
    * public Image img = null;
    * public VideoFormat vf = null;
    * public BufferToImage btoi = null;
    * public ImagePanel imgpanel = null;
    *
    * public SwingCapture()
    * {
    * setLayout(new BorderLayout());
    * setSize(320,550);
    *
    * imgpanel = new ImagePanel();
    * capture = new JButton("Capture");
    * capture.addActionListener(this);
    *
    * String str1 = "vfw:Logitech USB Video Camera:0";
    * String str2 = "vfw:Microsoft WDM Image Capture (Win32):0";
    * di = CaptureDeviceManager.getDevice(str2);
    * ml = new MediaLocator("vfw://0");
    *
    * try
    * {
    * player = Manager.createRealizedPlayer(ml);
    * player.start();
    * Component comp;
    *
    * if ((comp = player.getVisualComponent()) != null)
    * {
    * add(comp,BorderLayout.NORTH);
    * }
    * add(capture,BorderLayout.CENTER);
    * add(imgpanel,BorderLayout.SOUTH);
    * }
    * catch (Exception e)
    * {
    * e.printStackTrace();
    * }
    * }
    *
    *
    *
    * public static void main(String[] args)
    * {
    * Frame f = new Frame("SwingCapture");
    * SwingCapture cf = new SwingCapture();
    *
    * f.addWindowListener(new WindowAdapter() {
    * public void windowClosing(WindowEvent e) {
    * playerclose();
    * System.exit(0);}});
    *
    * f.add("Center",cf);
    * f.pack();
    * f.setSize(new Dimension(320,550));
    * f.setVisible(true);
    * }
    *
    *
    * public static void playerclose()
    * {
    * player.close();
    * player.deallocate();
    * }
    *
    *
    * public void actionPerformed(ActionEvent e)
    * {
    * JComponent c = (JComponent) e.getSource();
    *
    * if (c == capture)
    * {
    * // Grab a frame
    * FrameGrabbingControl fgc = (FrameGrabbingControl)
    * player.getControl("javax.media.control.FrameGrabbingControl");
    * buf = fgc.grabFrame();
    *
    * // Convert it to an image
    * btoi = new BufferToImage((VideoFormat)buf.getFormat());
    * img = btoi.createImage(buf);
    *
    * // show the image
    * imgpanel.setImage(img);
    *
    * // save image
    * saveJPG(img,"c:\\test.jpg");
    * }
    * }
    *
    * 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);
    * }
    * }
    * }
    *
    *
    * public static void saveJPG(Image img, String s)
    * {
    * BufferedImage bi = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
    * Graphics2D g2 = bi.createGraphics();
    * g2.drawImage(img, null, null);
    *
    * FileOutputStream out = null;
    * try
    * {
    * out = new FileOutputStream(s);
    * }
    * catch (java.io.FileNotFoundException io)
    * {
    * System.out.println("File Not Found");
    * }
    *
    * JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
    * JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
    * param.setQuality(0.5f,false);
    * encoder.setJPEGEncodeParam(param);
    *
    * try
    * {
    * encoder.encode(bi);
    * out.close();
    * }
    * catch (java.io.IOException io)
    * {
    * System.out.println("IOException");
    * }
    * }
    *
    * }

ca devrait t'aider.