The model path exists in Chinese, depthai_demo.py cannot run error

[hello-word-yang]

There is Chinese in my model path, and an error is reported when loading the file model as shown in the figure below.

We found that it was because the std::ifstream method failed to open a file with a Chinese path.

depthai-core/src/pipeline/AssetManager.cpp

Line 32 in 0cc6284

std::ifstream stream(path, std::ios::in | std::ios::binary);

Can you help us solve this problem? thanks.

[Luxonis-Brandon]

Asking team. Not immediately sure.

[themarpe]

Hi @hello-word-yang
Seems like its a Windows specific issue. Checking on how to properly handle this for Windows platform...

[themarpe]

@hello-word-yang I think what might immediately remedy the issue is setting UTF-8 support in Locale under Windows settings.

(Source: https://pete.akeo.ie/2019/11/powershell-script-to-convert-utf-8.html)

Otherwise it seems like we have to handle the path as UTF-16 and use wide strings in Windows case...
Will look into adding clean support for that as well

[themarpe]

Note: The above UTF-8 support is a system wide change and may affect other software running on the computer. I advise to continue with precaution and rollback if undesired side effects show up

[hello-word-yang]

hi, @themarpe

Thanks for your reply, I will test the method you mentioned as soon as possible.

[hello-word-yang]

hi, @themarpe

After my test, after modifying the encoding format of the system to utf-8, depthai-demo.py can run normally when the model path contains Chinese path.

Thank you for the solution.

But I think it is better to solve this problem from the code level, because it is impossible for all users to modify the system.

[themarpe]

But I think it is better to solve this problem from the code level, because it is impossible for all users to modify the system.

I agree - I wish Windows will push more into UTF-8 direction, so this won't be a platform dependent thing anymore.
Will see how I'll be with time the next couple of weeks. Thanks for testing it out:)