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retrieve the video stream from an Axis camera

1 reply [Last post]
nesrine18
Offline
Joined: 2010-04-03

hi everyone,
i'm a new member of this forum..i'm trying to retrieve the video stream from my Axis camera..i don't know what's exactly the problem:when i run the project there's no errors but i get no video on my jFrame..
this is my code,can you please help me to know where the problem is?
thanks..

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*;

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

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nesrine18
Offline
Joined: 2010-04-03

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_CLO SE);
AxisCamera axPanel = new AxisCamera(jframe);
new Thread(axPanel).start();
jframe.getContentPane().add(axPanel);
jframe.pack();
jframe.show();
}

}