Depthai: Is is possible to provide API and lib for Java ?

[wureka]

I am a Java developer.
Is is possible to provide API and lib for Java ?
Many thanks.

[Luxonis-Brandon]

So we do have a community member who is working on this. I'm asking him if I can put you two in touch. The C++ bindings should be fairly straightforward to use in Java. https://www.codeproject.com/Articles/993067/Calling-Java-from-Cplusplus-with-JNI#:~:text=The%20Java%20Native%20Interface%20(JNI,Java%20components%20from%20C%2B%2B.

I think this member already got this working though, so it would reduce work duplication. So I just pinged him.

[Luxonis-Brandon]

I also just made a channel in the Discord for this:
https://discord.com/channels/790680891252932659/801236927080038430/801237086069850132

Invite link:
https://discord.gg/EPsZHkg9Nx

[Grumpy141]

Hi, yes I have started, but it is not working yet. I decided to create the JNI interface using Javacpp. It parses all the C++ header files and creates the JNI and jar files. I got all the parsing to work, but it creates a 7000 line c++ file that must compile for the JNI. I am erroring out at line 5000, so it is close. I have no c++ experience, so it is slow going. If there is a Java developer who has some c++ experience, could probably get this working in a day.

[Luxonis-Brandon]

So pinging @jonngai on this actually.

@jonngai - would you be able to help. It just struck me that with your Android experience you may be able to swoop in and help out.

Thoughts?

[jonngai]

Hi @Grumpy141 , yeah, I might be able to help out a bit as time permits. Is there any way you can share what you've got so far and where you're getting stuck?

[Grumpy141]

Hi,   Please send me your e-mail address and I will share with you what I have so far.   My email is [email protected]
On Wednesday, January 20, 2021, 12:14:55 PM MST, jonngai [e-mail] wrote:

Hi @Grumpy141 , yeah, I might be able to help out a bit as time permits. Is there any way you can share what you've got so far and where you're getting stuck?

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[wureka]

Hi @Grumpy141,
Thank you for your sharing. My email is [email protected]
My main developing language is Java.
However OpenCV AI Kit currently only provides python API.
So, I am thinking of accessing depthai-core libraries with Java JNA.
But unfortunately, I am not familiar with C++, nor JNA. So, it's a big
challenge for me.
Anyway, let's see what I can contribute.

Thank you again.
Regards

Grumpy141 [e-mail] 於 2021年1月21日 週四 上午4:12寫道：

Hi, Please send me your e-mail address and I will share with you what I
have so far. My email is [email protected]
On Wednesday, January 20, 2021, 12:14:55 PM MST, jonngai <
[email protected]> wrote:

Hi @Grumpy141 , yeah, I might be able to help out a bit as time permits.
Is there any way you can share what you've got so far and where you're
getting stuck?

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Reply to this email directly, view it on GitHub, or unsubscribe.

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[Grumpy141]

Hi @wureka,   I am working on the JNI at the moment.  Once we have that, you could help with the Java classes for the Java API.  
  To create the JNI, I am using javacpp.    bytedeco/javacpp

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bytedeco/javacpp

The missing bridge between Java and native C++. Contribute to bytedeco/javacpp development by creating an accoun...
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I am creating a new javacpp-preset called depthai.  You can find the javacpp-preset here:
bytedeco/javacpp-presets

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bytedeco/javacpp-presets

The missing Java distribution of native C++ libraries - bytedeco/javacpp-presets
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You won't need any of these once the Java interface is created.   javacpp parses all the C++ header files and automatically creates the JNI interface.   If you want to help with the JNI interface, then download the javacpp-presets and get one of the individual projects to compile on your machine.  There is a wiki for both javacpp-presets and javacpp.   Or you can wait until the JNI interface is created and then start chipping in.Thanks

 

On Wednesday, January 20, 2021, 03:50:19 PM MST, wureka <[email protected]> wrote:

Hi @Grumpy141,
Thank you for your sharing. My email is [email protected]
My main developing language is Java.
However OpenCV AI Kit currently only provides python API.
So, I am thinking of accessing depthai-core libraries with Java JNA.
But unfortunately, I am not familiar with C++, nor JNA. So, it's a big
challenge for me.
Anyway, let's see what I can contribute.

Thank you again.
Regards

Grumpy141 [e-mail] 於 2021年1月21日 週四 上午4:12寫道：

Hi, Please send me your e-mail address and I will share with you what I
have so far. My email is [email protected]
On Wednesday, January 20, 2021, 12:14:55 PM MST, jonngai <
[email protected]> wrote:

Hi @Grumpy141 , yeah, I might be able to help out a bit as time permits.
Is there any way you can share what you've got so far and where you're
getting stuck?

—
You are receiving this because you were mentioned.
Reply to this email directly, view it on GitHub, or unsubscribe.

—
You are receiving this because you authored the thread.
Reply to this email directly, view it on GitHub
https://github.com/luxonis/depthai/issues/310#issuecomment-763903259,
or unsubscribe
https://github.com/notifications/unsubscribe-auth/ACJYRHHB4OS2POWWFJU75ODS242JJANCNFSM4WJWPJSQ
.

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