i ma again working on my final project

i got a problem!!!

how to create a desktop application to display the video ip camera panasonic bl-c11 in java!!

help me!!!

iam newbie

sad

admin

10 years 8 months ago

The first thing to determine is what streaming formats your IP camera supports.  Streaming JPEG is one of the simplest, albiet crude method of streaming video from an IP camera.  The foscam supports this format.

This file is a frame grabber which extracts the jpeg from the HTTP response of the IP Camera.

http://code.google.com/p/myrobotlab/source/browse/trunk/src/org/myrobotlab/image/IPCameraFrameGrabber.java?spec=svn283&r=283

What is your end goal, maybe there is a simpler way to get what you want done.

Greg.

You may use anything which you find helpful on your project.  If you have specific questions, let me know and I might be able to assist.

Regards,

Greg.

akbar

10 years 8 months ago

In reply to by admin

OK 
Thanks for help
:)

akbar

10 years 6 months ago

i am newbie...

i have done like you said

but how i create the main method????

 

thanks in adv

smiley

admin

10 years 6 months ago

 

 
This compiles. It will start up, connect, grab 100 frames from the foscam camera and save them as jpegs.

package org.myrobotlab.image;

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

import javax.imageio.ImageIO;

import org.apache.log4j.Level;
import org.apache.log4j.Logger;

public class IPCameraFrameGrabber {

/*
     * excellent reference - http://www.jpegcameras.com/ foscam url
     * http://host/videostream.cgi?user=username&pwd=password
     * http://192.168.0.59:60/videostream.cgi?user=admin&pwd=password android ip
     * cam http://192.168.0.57:8080/videofeed
     */
public final static Logger LOG = Logger
.getLogger(IPCameraFrameGrabber.class.getCanonicalName());

private URL url;
private URLConnection connection;
private InputStream input;
private Map<String, List<String>> headerfields;
private String boundryKey;

public IPCameraFrameGrabber(String urlstr) {
try {
url = new URL(urlstr);
} catch (MalformedURLException e) {
LOG.error(e);
}
}

public void start() throws Exception {

LOG.error("connecting to " + url);
connection = url.openConnection();
headerfields = connection.getHeaderFields();
if (headerfields.containsKey("Content-Type")) {
List<String> ct = headerfields.get("Content-Type");
for (int i = 0; i < ct.size(); ++i) {
String key = ct.get(i);
int j = key.indexOf("boundary=");
if (j != -1) {
boundryKey = key.substring(j + 9);
}
}
}
input = connection.getInputStream();
}

public void stop() throws Exception {
// connection.
input.close();
input = null;
connection = null;
url = null;
}

public BufferedImage grabBufferedImage() throws Exception {
byte[] buffer = new byte[4096];// MTU or JPG Frame Size?
int n = -1;
ByteArrayOutputStream baos = new ByteArrayOutputStream();

StringBuffer sb = new StringBuffer();
int total = 0;
int c;
// read http subheader
while ((c = input.read()) != -1) {
if (c > 0) {
sb.append((char) c);
if (c == 13) {
sb.append((char) input.read());// '10'
c = input.read();
sb.append((char) c);
if (c == 13) {
sb.append((char) input.read());// '10'
break; // done with subheader
}

}
}
}
// find embedded jpeg in stream
String subheader = sb.toString();
LOG.error(subheader);
int contentLength = -1;
// if (boundryKey == null)
// {
// Yay! - server was nice and sent content length
int c0 = subheader.indexOf("Content-Length: ");
int c1 = subheader.indexOf('\r', c0);
c0 += 16;
contentLength = Integer.parseInt(subheader.substring(c0, c1));
LOG.info("Content-Length: " + contentLength);
// } else {

// }

// adaptive size - careful - don't want a 2G jpeg
if (contentLength > buffer.length) {
buffer = new byte[contentLength];
}

n = -1;
total = 0;
while ((n = input.read(buffer, 0, contentLength - total)) != -1) {
total += n;
baos.write(buffer, 0, n);
if (total == contentLength) {
break;
}
}

baos.flush();
// LOG.info("wrote " + baos.size() + "," + total);
BufferedImage bi = ImageIO.read(new ByteArrayInputStream(baos
.toByteArray()));
return bi;
}

public static void main(String[] args) {

try {
org.apache.log4j.BasicConfigurator.configure();
Logger.getRootLogger().setLevel(Level.DEBUG);

IPCameraFrameGrabber camera = new IPCameraFrameGrabber(
"http://host/videostream.cgi?user=username&pwd=password&quot;);

camera.start();
int fn = 0;

while (fn < 100) {
++fn;
LOG.debug("grabbing frame " + fn);
BufferedImage frame = camera.grabBufferedImage();
LOG.debug("saving frame " + fn);
save(frame, "frame_"+fn, "jpg");

}

} catch (Exception e) {
LOG.error(e.getMessage());
}
}

public static void save(BufferedImage image, String fileName, String ext) {
File file = new File(fileName + "." + ext);
try {
ImageIO.write(image, ext, file); // ignore returned boolean
} catch(IOException e) {
System.out.println("Write error for " + file.getPath() +
": " + e.getMessage());
}
}

}

akbar

10 years 6 months ago

thanks in adv