B4J Question calling linux libraries and rpi PIO?

[techknight]

Is it possible to call additional libraries that could be fetched for the raspberry pi, such as ffmpeg, opencv, etc, and use it in the b4j application?

Is it also possible to access the external PIO of a raspberri pi from the b4j app?

 

[Erel]

Is it possible to call additional libraries that could be fetched for the raspberry pi, such as ffmpeg, opencv, etc, and use it in the b4j application?

You will need to create wrappers for these libraries.

Is it also possible to access the external PIO of a raspberri pi from the b4j app?

Yes: [IoT] jPi4J - Raspberry Pi GPIO controller

 

[techknight]

Ah ok, I hope there is a tutorial for wrappers, as I have no idea what that is.

With the BeagleBone Black there is a library called LEDscape. Which allows you to open up a framebuffer from within your environment, such as python/c, etc and start the driver which drives an array of RGB LED Tiles. From there you could draw things in manually using your rendering calculations, or use a library such as ffmpeg, or text rendering using opencv.

But since I cant develop in python or C, I was hoping basic/java could do it. With wrappers it can?

 

[Erel]

If you find a java library that supports these features then it can be wrapped.

 

[Roycefer]

Though it's a lot more tricky, you can also wrap native (C/C++) libraries using JNA or JNI.

 

[techknight]

I have a pretty good learning curve ahead. I am from a VB6 world, so when I look at C programs or python (easier to understand for me), I get lost really easily.

So, with that said, I think using B4J would be ideal here, if I can wrap LEDscape, openCV/CV2, ffmpeg, etc etc...

From some quick research, it seems opencv has already been converted to java, so that might make things easier.

Time to break out the research hat. ;-)