The goal:
I want to use the SimpleARToolKit in processing. The demo programs use all the Library JMyron to get the images from the webcam, although there was written
And I know the old never ending stroy with the JMyron because of finding the native dll's.

The way:
So I'm decided to try to get the PImage with the help of JMF. I learnd by the examples of timcam package.
With my function getPImage I get PImages into processing:

1.     public PImage getPImage()  {
2.             Buffer          buf = null;
3.             Image           img = null;
4.             System.out.println( "JWorCam.getPImage" );
5.             FrameGrabbingControl fgc = (FrameGrabbingControl) player.getControl("javax.media.control.FrameGrabbingControl");
6.             // the player may be in the started state, but it takes a few tries before
7.             // we get a valid frame!
8.             do {
9.                 buf = fgc.grabFrame();
10.                 }
11.             while(buf.getLength() == 0);
12.            
13.             BufferToImage btoi = new BufferToImage((VideoFormat) buf.getFormat());
14.             img = btoi.createImage(buf);
15.             PImage pimg = new PImage( (java.awt.Image)img );
16.             return pimg;
17.         }

My problem
It seems to work very well. Each new image of the webcam can be displayed in processing. But the SimpleARToolKit dosn't work with my PImages in the following code:

1. import javax.media.*;
2. import JWorCam_Package.*;
3. import processing.opengl.*;
4. import pARToolKit.SimpleARToolKit;
5. JWorCam j;
6. PImage img;
7. SimpleARToolKit ar;
8. int capWidth, capHeight;
9. void setup() {
10.   size(640, 480, OPENGL);
11.   capWidth = 320;
12.   capHeight = 240;
13.   j = new JWorCam();
14.   j.start ("vfw:Microsoft WDM Image Capture (Win32):0");
15.    
16.   img = createImage(capWidth, capHeight, ARGB);
17.   ar = new SimpleARToolKit(this, capWidth, capHeight);
18.   ar.loadPattern("patt.hiro", 80, 0.0f, 0.0f);
19.   ar.register("showBox");
20.   stroke(200,200,0);
21. }
22. void draw() {
23.   background(0);
24.   img = j.getPImage();
25.   img.updatePixels();
26.   println("img.format" + img.format);
27.  
28.   image(img,0,0,width,height);
29.   println("Img" +img);
30.  
31.   if (ar.findMatch(img,1000)) {
32.     ar.showObject();
33.   }else
34.  println("Pattern not found");
35.  }
36. void showBox(SimpleARToolKit _a) {
37.   noFill();
38.   box(50);
39.   fill(255);
40. }

My PImage has a different format = 1 (RGB-Type) not the ARGB-Type (format =2), which the SimpleARToolKit seems to be need.



Now my question:
Has anybody an idea to

• modify my function getPImage or
• to convert a PImage with format=1 to a PImage with format=2 ?

Thanks to read my long prolog.