Homebrew [Example] Camera Service (high framerate and fast drawing)

[Deleted User]

Hello everyone.

I tested a few tricks with the camera last week. I was really disappointed to not be able to run the camera at the maximum frame rate without having some timeout results. I investigated the thing and I got the thing to work fine. Unfortunately, drawing the image was taking a too long time and the loop was only iterating 20 times per second. I continued my research and tests and I finally got it to work. I decided to share it so.

The code is available on GitHub : https://github.com/MrNbaYoh/3DSCameraExample

I will surely make some improvements and explain how the thing is working because the documentation concerning the Camera and Y2R services are really lean on 3dbrew.

Maybe a video would be nice ?

 

[Goombi]

Tested it (N3DS 10.3, *hax 2.5 from 11/9, IronHax,), worked perfectly! That smooth 60fps is great, good job!
Combined to the "Home = Screenshot" function we now have a rudimentary but functionnal HB camera app.

 

[Deleted User]

Tested it (N3DS 10.3, *hax 2.5 from 11/9, IronHax,), worked perfectly! That smooth 60fps is great, good job!
Combined to the "Home = Screenshot" function we now have a rudimentary but functionnal HB camera app.

The loop is iterating 60 times per second but the camera max frame rate is 30.

Implementing a way to save the current frame from the camera is not hard and should be more efficient than the "home button screenshot".
I will try to document and explain all of the thing, and improve it to make the camera easier to use.

 

[Giodude]

compiled .3dsx..............................................................? Pls............................................

 

[Deleted User]

compiled .3dsx..............................................................? Pls............................................

Done.

 

[Giodude]

is there a link?

 

[lolzvid]

is there a link?

There's the Github link at OP's post with the .3dsx and .smdh files.

 

[MasterLel]

is there a link?

https://github.com/MrNbaYoh/3DSCameraExample/raw/master/CameraExample.3dsx

 

[Giodude]

got it, thanks, lemme give it a test

 

[Urbanshadow]

Oh, this is cool! Do you get both cameras with the camera service? Can we develop our AR thingies with this?

 

[Giodude]

wow. Works perfectly.

 

[Deleted User]

Oh, this is cool! Do you get both cameras with the camera service? Can we develop our AR thingies with this?

Yep, you may use both cameras but it will maybe require some supplementary drawings and then cause a TPS decrease.

 

[lolzvid]

I've tested it on my O3DS 9.2.0-20 (homemenuHax and ninjhax 2.5) and it crashed every single time (needs to power off the system to exit the app)...

 

[Urbanshadow]

Yep, you may use both cameras but it will maybe require some supplementary drawings and then cause a TPS decrease.

I think I can cope with that. Roughly 30 fps would be fine. I'm more worried about the picture treatment (otsu, I believe. Ransac would be best but overkill) taking too long to process rather than some drawings.

 

[Blundermann]

I've tested it on my O3DS 9.2.0-20 (homemenuHax and ninjhax 2.5) and it crashed every single time (needs to power off the system to exit the app)...

I'm on an O3DS 9.9 and it doesn't work for me either. Results in a crash.

 

[Deleted User]

I've tested it on my O3DS 9.2.0-20 (homemenuHax and ninjhax 2.5) and it crashed every single time (needs to power off the system to exit the app)...

I'm on an O3DS 9.9 and it doesn't work for me either. Results in a crash.

Did you download the xml file too ?

 

[lolzvid]

Did you download the xml file too ?

No, silly me

Now it's working flawlessly, thanks!

 

[Blundermann]

No, silly me

Now it's working flawlessly, thanks!

I did forget it, and it starts up fine now!
However, I've run into another issue.

It makes a noise, renders about five or so frames, then the top screen freezes, and the bottom screen continues to draw 59-60.
What do I do?

 

[Deleted User]

I did forget it, and it starts up fine now!
However, I've run into another issue.

It makes a noise, renders about five or so frames, then the top screen freezes, and the bottom screen continues to draw 59-60.
What do I do?

Looks like a timeout problem, interesting I will test with my O3DS.

 

[Deleted User]

snip