hi ich wollte mich mal erkundigen ob man in diese mjepg klasse einen reload einbauen kann so das das bild nach vorgegebener zeit neu läd. aber mir nicht permanent den ganzen arbeitsspeicher zumüllt.
PHP-Code:
package
{
import flash.display.Loader;
import flash.events.Event;
import flash.events.ProgressEvent;
import flash.net.Socket;
import flash.utils.ByteArray;
import com.dynamicflash.util.Base64;
/**
* This is a class used to view a MJPEG
* @author Josh Chernoff | GFX Complex
*
*/
public class MJPEG extends Loader
{
private var _user:String; //Auth user name
private var _pass:String; //Auth user password
private var _host:String; //host server of stream
private var _port:int; //port of stream
private var _file:String; //Location of MJPEG
private var _start:int = 0; //marker for start of jpg
private var webcamSocket:Socket = new Socket(); //socket connection
private var imageBuffer:ByteArray = new ByteArray(); //image holder
/**
* Create's a new instance of the MJPEG class. Note that due a sandbox security problem, unless you can place a crossdomain.xml
* on the host server you will only be able to use this class in your AIR applications.
*
* @example import MJPEG;
* var cam:MJPEG = new MJPEG("192.168.0.100", "/img/video.mjpeg", 80);
* addChild(cam);
*
* @param host:String | Host of the server. Do not include protocol
* @param file:String | Path to the file on the server. Start with a forward slash
* @param port:int | Port of the host server;
* @param user:String | User name for Auth
* @param pass:String | User password for Auth
*/
public function MJPEG (host:String, file:String, port:int = 80, user:String = null, pass:String = null )
{
_host = host;
_file = file;
_port = port;
_user = user;
_pass = pass;
webcamSocket.addEventListener(Event.CONNECT, handleConnect);
webcamSocket.addEventListener(ProgressEvent.SOCKET_DATA, handleData);
webcamSocket.connect(host, port);
}
private function handleConnect(e:Event):void
{
// we're connected send a request
var httpRequest:String = "GET "+_file+" HTTP/1.1\r\n";
httpRequest+= "Host: localhost:80\r\n";
if(_user != null && _pass != null){
var source:String = String(_user + ":" + _pass);
var auth:String = Base64.encode(source);
httpRequest += "Authorization: Basic " + auth.toString()+ "\r\n"; //NOTE THIS MAY NEEED TO BE EDITED TO WORK WITH YOUR CAM
}
httpRequest+="Connection: keep-alive\r\n\r\n";
webcamSocket.writeMultiByte(httpRequest, "us-ascii");
}
function handleData(e:ProgressEvent):void {
//trace("Got Data!" + e);
// get the data that we received.
// append the data to our imageBuffer
webcamSocket.readBytes(imageBuffer, imageBuffer.length);
//trace(imageBuffer.length);
while(findImages()){
//donothing
}
}
private function findImages():Boolean
{
var x:int = _start;
var startMarker:ByteArray = new ByteArray();
var end:int = 0;
var image:ByteArray;
if (imageBuffer.length > 1) {
if(_start == 0){
//Check for start of JPG
for (x; x < imageBuffer.length - 1; x++) {
// get the first two bytes.
imageBuffer.position = x;
imageBuffer.readBytes(startMarker, 0, 2);
//Check for end of JPG
if (startMarker[0] == 255 && startMarker[1] == 216) {
_start = x;
break;
myCam.stop();
}
}
}
for (x; x < imageBuffer.length - 1; x++) {
// get the first two bytes.
imageBuffer.position = x;
imageBuffer.readBytes(startMarker, 0, 2);
if (startMarker[0] == 255 && startMarker[1] == 217){
end = x;
image = new ByteArray();
imageBuffer.position = _start;
imageBuffer.readBytes(image, 0, end - _start);
displayImage(image);
// truncate the imageBuffer
var newImageBuffer:ByteArray = new ByteArray();
imageBuffer.position = end;
imageBuffer.readBytes(newImageBuffer, 0);
imageBuffer = newImageBuffer;
_start = 0;
x = 0;
return true;
myCam.start();
}
}
}
return false;
}
private function displayImage(image:ByteArray):void
{
this.loadBytes(image);
}
}
}
muss leider dazusagen das ich mich mit as3 erst seit gut 2 wochen sehr unregelmäsig befasse, und somit noch keine erfahrungen habe. kann mir da jemand evtl nen anstoß geben wie und wo ich was ändern muss?
24-03-2011, 13:52
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