connexion avec une camera IP
bonjour,
je veux communiquer avec une camera IP en utilisant son adresse IP..c'est a dire,récupérer le flux video et l'afficher dans un jFrame..
j'ai fais ça,et normalement ça marche mais je sais pas ou est le probleme,l'execution se fais normalement mais rien ne s'affiche.
merci si pouvez m'aider
Code:
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| import java.net.*;
import com.sun.image.codec.jpeg.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;
/**
*
* @author David E. Mireles, Ph.D.
*/
public class AxisCamera extends JPanel implements Runnable {
public boolean useMJPGStream = true;
public String jpgURL="http://your-ip-here/axis-cgi/jpg/image.cgi?resolution=352x240";
public String mjpgURL="http://your-ip-here/axis-cgi/mjpg/video.cgi?resolution=352x240";
DataInputStream dis;
private Image image=null;
public Dimension imageSize = null;
public boolean connected = false;
private boolean initCompleted = false;
HttpURLConnection huc=null;
Component parent;
/** Creates a new instance of AxisCamera */
public AxisCamera (Component parent_) {
parent = parent_;
}
public void connect(){
try{
URL u = new URL(useMJPGStream?mjpgURL:jpgURL);
huc = (HttpURLConnection) u.openConnection();
//System.out.println(huc.getContentType());
InputStream is = huc.getInputStream();
connected = true;
BufferedInputStream bis = new BufferedInputStream(is);
dis= new DataInputStream(bis);
if (!initCompleted) initDisplay();
}catch(IOException e){ //incase no connection exists wait and try again, instead of printing the error
try{
huc.disconnect();
Thread.sleep(60);
}catch(InterruptedException ie){huc.disconnect();connect();}
connect();
}catch(Exception e){;}
}
public void initDisplay(){ //setup the display
if (useMJPGStream)readMJPGStream();
else {readJPG();disconnect();}
imageSize = new Dimension(image.getWidth(this), image.getHeight(this));
setPreferredSize(imageSize);
parent.setSize(imageSize);
parent.validate();
initCompleted = true;
}
public void disconnect(){
try{
if(connected){
dis.close();
connected = false;
}
}catch(Exception e){;}
}
public void paint(Graphics g) { //used to set the image on the panel
if (image != null)
g.drawImage(image, 0, 0, this);
}
public void readStream(){ //the basic method to continuously read the stream
try{
if (useMJPGStream){
while(true){
readMJPGStream();
parent.repaint();
}
}
else{
while(true){
connect();
readJPG();
parent.repaint();
disconnect();
}
}
}catch(Exception e){;}
}
public void readMJPGStream(){ //preprocess the mjpg stream to remove the mjpg encapsulation
readLine(3,dis); //discard the first 3 lines
readJPG();
readLine(2,dis); //discard the last two lines
}
public void readJPG(){ //read the embedded jpeg image
try{
JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(dis);
image = decoder.decodeAsBufferedImage();
}catch(Exception e){e.printStackTrace();disconnect();}
}
public void readLine(int n, DataInputStream dis){ //used to strip out the header lines
for (int i=0; i<n;i++){
readLine(dis);
}
}
public void readLine(DataInputStream dis){
try{
boolean end = false;
String lineEnd = "\n"; //assumes that the end of the line is marked with this
byte[] lineEndBytes = lineEnd.getBytes();
byte[] byteBuf = new byte[lineEndBytes.length];
while(!end){
dis.read(byteBuf,0,lineEndBytes.length);
String t = new String(byteBuf);
//System.out.print(t); //uncomment if you want to see what the lines actually look like
if(t.equals(lineEnd)) end=true;
}
}catch(Exception e){e.printStackTrace();}
}
public void run() {
connect();
readStream();
}
public static void main(String[] args) {
JFrame jframe = new JFrame();
jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
AxisCamera axPanel = new AxisCamera(jframe);
new Thread(axPanel).start();
jframe.getContentPane().add(axPanel);
jframe.pack();
jframe.show();
}
} |
