If you want some DDC activation code for recent (NV50) NVIDIA graphics cards, you may have a look here :
viewtopic.php?f=16&t=7691

mickeyjaw> Great for implementation How does it work ? Displaying first image to turn it on, and displaying second to turn it off ?
I thought it was Shutter glasses ? So why Interlaced ?

I'm working on swapping eyes but I need to make a cleaned code. I think we have to separe py file for each rendering mode !

Like that :


It would be better to add new rendering mode ... Because there is many special rendering mode like your glasses or other old shutters.
I'm thinking about for a week and I will make it this week-end. Thank you for helping

I want to make a website for hosting the project. But I have no idea about name. I would an english name because it's sounds great and everybody understand english.
Do you have an Idea (name and domain name) ?

Fredz> Sorry I don't understand ... I'm french Is it for Shutter glasses ?

Oui, ça permet d'envoyer le signal DDC à chaque oeil pour les lunettes LCD à obturation (eDimensional, H3D, etc.). Pour l'instant ça ne fonctionne que sur les cartes NVIDIA de génération NV50 (GeForce 8, GeForce 9, GeForce GTX2x0) mais ça devrait pouvoir s'adapter aux autres cartes NVIDIA et peut-être à d'autres marques en cherchant un peu.

In english :
Yes, it can send the DDC signal to each eye for LCD shutter glasses (eDimensional, H3D, etc.). At this time it does only work with NVIDIA NV50 class hardware (GeForce 8, GeForce 9, GeForce GTX2x0) but I think it could be adapted to other cards with a little bit more research.

Cool, tu parles français. J'ai quelques petites questions:
- Est-ce que ça marche avec les Nvidia 3D Vision ?
- Comment ça fonctionne pour afficher les trucs sur l'écran ?

English:
Cool, you speak french. I have a few questions:
- Does it work with Nvidia 3D Vision ?
- How do you display things on the screen ?

I want Tux Stereo Viewer to work with Nvidia 3D Vison. How can I do this ?
I think I will have to use OpenGL.

Mickeyjaw> I've read about eDimensionnal Dongle ! If I understand the dongle is beetween the computer and the screen. The dongle hides lines and close an eye ? Easy for interlaced. And for swapping eyes we have to display an image (normale : http://magicbox.org.uk/mediawiki/images ... malon.gif; reverse: http://magicbox.org.uk/mediawiki/images ... erseon.gif).

But there is 3 modes for the dongle : interlaced, Vsync and page flipping.
Vsync is easy too, but we have to switch in full screen. The we have to display right to top, and left to bottom.
But, do you have an idea on how add the support for the third mode (page flipping) ? I don't really understand how does it work.

Not at this time, since I don't own 3D Vision glasses for testing. But you'll find some code here to activate the glasses : viewtopic.php?f=26&t=3130
With OpenGL, you call set_ddc_sda(0) to block one eye after a glXWaitGL/glXSwapBuffers sequence and set_ddc_sda(1) for the other eye after the second sequence. But the results are not convincing yet on NVIDIA hardware, there are quite a lot of missed vertical retraces. It may produce better results on different hardware (ATI, Intel, etc.).
OpenGL is one option but you can also use Xv, which is used for most video players under Linux and which is able to synchronize to the vertical retrace.You need to synchronize your drawing with the vertical retrace, for that you need to use Xv or OpenGL as I said. You should have to do the same thing for interlaced and vsync doubling though, or your glasses won't flicker in a continuous way.

Yes, this is exactly how it works. It is easy, but you loose half the resolution, and half the brightness too.





I think these are essentialy the same question, as Nvidia 3D Vision glasses are designed to work with page flipped displays. You have to make your program draw the left eye view on all the odd numbered frames and the right eye view on all the even numbered frames. Like Fredz said, you can do this using OpenGL or XVideo. You may also want to look at pygame, which is a set of python bindings for SDL, which in turn wraps OpenGl, framebuffer or DirectX dependent on the OS. If you use pygame, your code is much more likely to work on Windoze and OSX too.

With the e-dimensional dongle you can use the colour bar to set simple page flipping mode. The dongle will then swap which eye is closed on every vertical retrace, which is ok until your program misses a frame, at which point the eyes become wrong. You can also signal the dongle using DDC, like the code Fredz posted. This way your program can tell the dongle exactly which eye to blank, so if you miss a frame you can still keep the glasses and display in sync. The NVidia 3D Vision glasses have no dumb page flipping mode, and must always be told which eye to close over the USB cable. There is source code to a simple windows driver for these glasses written in C so somebody will have to port it, hopefully not me as my C knowledge is very small. I think the user bwheaton has expressed an interest in doing this.

So, for eDimensionnal there are two easy modes : interlaced and Vsync (displaying top/bottom).

But the third mode (page flipping) is a little more difficult. If I can for eDimmensionnal, I can for Nvidia (with usb comm to add).
But I don't really use OpenGL, so ... it would be difficult ^^ For now I will make a cleaned code

Mickeyjaw> If you have a few minutes, can you made 3 new window in Glade with the 3 others images for eDimensional ?
It could be very useful for me because Glade doesn't want to open the new interface ... I'm now on Debian (so Glade is to old) !

What do you think of stereotux.net ? The problem is that limit us (or juste me if you don't want to join the project ) to stay on Linux ...
I think about stereo3d.com but that's already exists... My domain name is free until 31 march !

Ok, so I made a new glade interface like you asked. The new windows are called:


I also added an option for Top/Bottom display on the Affichage menu. The menu item is called top_bottom_menu

I have tarballed the interface up, together with the neccessary GIF files. I didn't change any of the python code this time, as I assume you are still re-writing the code in StereoImg? If you do need me to add code to display the new images and handle the extra menu item let me know, and I will do it.

Also, can I suggest that we start a sourceforge project for this, and point your new domain name there? Let me know if you want me to do this, or if you want to do it yourself.

Thank you very much. Yes a sourceforge project can be very utseful. Or Goolge's SVN ?

EDIT: Done -> eDimensional Activation are fully supported ... Just have to make functions which diplay good things

Cool, I look forward to seeing your updated code. While you have been working on that, I have written a Gnome panel applet to control E-D dongles too. You need to untar the tarball then run Then log out and log back in, and you should be able to right click the gnome panel, select "Add to panel..." and select "Dongle Activator"

Please could either magestik or Fredz test this for me and let me know you find any bugs?

Edit: Replaced broken tarball with working one

Sorry, it doesn't work on my Debian. There is two buttons : 3D and 2D. But clicking didn't do anything. I don't know why, sorry.

For Tux Stereo Viewer, I've made a configurations file.
For now two configurations :
- Mode (INTERLACED, ANAGLYPH, SHUTTERS, HSYNC, VSYNC)
- Type (Normal, eDimensional, Nvidia3DVision, red/cyan, ...)

So there is many possibilities :
- INTERLACED: normal, eDimensional;
- ANAGLYPH: red/cyan, ...
- SHUTTERS: Nvidia3DVision, eDimensional;
-VSYNC: eDimensional, Dual Projector;
- HSYNC: Dual Projector, Planar;

It's fun

Please could you:


and post any errors you get in the terminal?

Thanks

Also could you try to right-click and check that the About and Preferences dialogs work

OK I think I know what the problem is.

How is your X Server setup? I.E how many monitors, and do you run them as Xinerama or separate screens?

Yes I have two monitors in Separate X screen, no Xinerama.
For Tux Stereo Viewer, I just finished to clean the StereoIMG.py.

I have the same error with my config, Debian/unstable with 2 monitors in TwinView in clone mode.

Ok I have made a new version, please could someone test?

When I launch ./ed_activator.py run-in-window I have these messages :
Then a window with a "3D" and "2D" button is displayed. When I click on the 3D button, I've got this message and nothing else :
And when I click on the 2D button, I have this one :

OK, third time lucky I hope. Sorry for this, but this is my first from scratch program on Linux, and I have been teaching myself both python and GTK libs as I go along... (I used to develop on windows in VB/Delphi plus I have written small programs in C, but only using std C library). I am beginning to see why Fredz said he didn't like python due to compatibility / version problems!

It's getting better

Now when I click on the buttons, the color line codes are actually displayed but just under the gnome-panel, which doesn't activate the glasses.

By the way, I think it could be a good idea to create new forum threads when we talk about different applications, ie. one for TuxStereoViewer, one for the Linux ED activator, etc. Else we're going to have a 10+ thread in no time...

Create a new forum ?

Maybe a Linux subforum would be a good idea as it was already suggested. I don't know what's the status about that.

Yeah didn't Neil offer to do that already? If he does then we can move/disentangle all the threads there.



That's wierd, what Window Manager and Gnome version? I've tried with both Compiz (0.8.2) and Metacity (2.25.144 with Gnome 2.26.0) and the windows with the colour bars go fullscreen fine. Do they draw in a window with borders or fullscreen/borderless? Do you mean they are obscured by the panel or they are drawn where the title bar of a maximised window would be? Any error messages?

Gnome 2.26.1 and Metacity 2.22.0 without a compositing manager.
Borderless.
They are just under the panel, where the title bar of a maximized window would be.
Here is what is displayed on the console when I click on the 3D button :
Here is a screenshot :

OK so i installed Debian squeeze (testing) and i can now replicate the problem. No fix yet, but i notice Tux Stereo Viewer will not fullscreen properly either. Iceweasel will go fullscreen, however, so i must be possible right? I guess i need to find a python app in the repo that fullscreens properly to see how it is done. Maybe i need to bypass GTK for the fullscreen bit

Done! It works on Ubuntu 9.04 and Debian Squeeze (Testing). Hopefully it will work on Debian Sid too. I just had to set a size request for the window, rather than leaving it as the default (-1, -1).

You've got it this time, congrats ! When the color bar is displayed, a giant gray fullscreen window is displayed under it too, just to let you know.

Brilliant, thanks for testing! I get the grey window too btw

Here (Debian Lenny) fullscreen works fine
And what about my domain name ? Do you have any idea ? It's an emrgency ^^ Two days left !

Yep,

http://magestik.fr/projets/stereo3D/Tux ... er_0.1.deb
No big news ... Just some update. This new version must have a configuration file into your home in .stereo3D directory.
For me : /home/bastien/.stereo3D/ ! The config file has to be nammed "general.conf" and have to contain something like that :

Zalman:


eDimensional Dongle:


Anaglyph (red/cyan only):

Cool. May I suggest, however, that left/right eye switching be implemented in stereoIMG somewhere, rather than using the dongle to swap eyes? Otherwise, it will not be possible to swap eyes for those using Anaglyph/Zalman etc.

With respect to my fullscreen problem with Tux-Stereo-Viewer, it happened because I was using a screen resolution of 800x600, but there is 1000x820 size request and 1000x820 default size set in the glade interface. Once I increased the resolution above 1152x864, Tux-Stereo-Viewer went fullscreen OK. I think we should reduce this default size/size request so that Tux-Stereo-Viewer will at least work at 1024x768 for those people who use cheap crappy CRT's with e-dimensional dongles.

I can make both of these changes if you want, just let me know I and I will do it.

Finally, I had an idea for a name: Freedimensional ?

Swapping Left/right will be in stereoIMG
For resolution, ok, youcan do it
"Freedimensional" sounds great ... But can't be used : already registered. One day Left :'(

And, what about talking in Live ? By example, with messenger network, some IRC channels or others way ?

Ok, so I got impatient and decided to implement left/right eye swapping anyway. I also made the changes to the default size/size request so it is now 780x550, which fits even an 800x600 screen. I also added a button to the toolbar to quickly swap eyes. Tarball is attached.

Fredz: How are your projects coming along? Which one are you mostly working on, and is there anything I can do to help?

Not much to present at this time, but I'm still working on various projects, especially lib3dglasses which should provide both a library with low level access for DDC glasses and a 3D test application in OpenGL.

I've stopped working on glStereo for now (3D driver for Linux) until I get my off-axis projection code working right in the test application for lib3dglasses. My movie player and un-anaglypher are also on hold.

I've started working on a new - simpler - application which should be able to show a 3D model of a stereoscopic image (side-by-side or anaglyph) to evaluate the quality of the 3D.

Any help would be appreciated, do you have some knowledge in C and OpenGL programming ?

Fredz:

I was hoping you would say that. I think that lib3dglasses will be very useful as a foundation for many other projects, and hopefully easy to achive in a reasonably short time. Once the api is stable let me know and i will try to write python bindings so we can use it in tux-stereo-viewer etc.

I have a little experience in C - i studied an introductory course during my first year at uni. I only learnt the basics - stdio.h, string.h, math.h etc. I am looking to get back into C though as i start a new degree in contol systems engineering in october. I have to say i find C much easier to write than to read right now, so i don't know how much help i can be with writing code.

Mickeyjaw> Thank you The new deb package is here : http://magestik.fr/TuxStereoViewer_0.1.deb I have made some minor modifications ...
Now, Interlaced and Anaglyph are fully supported. We have to make left/right and top/bottom. Someone, on Ubuntu-fr forum, has asked me to make some applications for dual-projector. So we can try it ? So, top/bottom and right/left could be our new priority ? Then, we could work on Shutters... with lib3dglasses ...

Fredz> ... which is a great idea, thank you for working on it !
I don't know anything in C... Sorry.

magestik: I found out about your path/filename encoding problem - there is a function in urllib you can use. You can do:



then use



eg



or something like that

see http://docs.python.org/library/urllib.html for more info

I know urllib and the unquote function ... It's work. I was hoping that I can found another way, but I can't. So I use this and it's work. Thank you.
New package is here : http://magestik.fr/TuxStereoViewer_0.1.deb

EDIT: News !
Now, we can open two separate files via "File>Open Left/Right Images". If your left image finished by "l" the software search for the same image which ends with "r".
Example: you try to open test_l.jpg and test_r.jpg. The first popup ask you the left file which is named test_l.jpg, so the soft will search for test_r.jpg. If they are on the same directory, the stereo image is directly displayed ! It's also work with "testl"/"testr" or "test-l"/"test-l"; you just have to named both of them in the same way It's hard to explain in English, I hope you will understand.