Conditional compilation possible?

General Discussion Other

markstock

Conditional compilation possible?

in General Discussion • Other • 2 years ago

I would like to develop a Processing program on my Linux laptop, but have it run on a Mac Mini. Unfortunately, the Linux version only supports video processing through GSVideo. I am not thrilled about using a non-standard video library on Mac as well, and I don't want to support two different programs. To solve this, I would like to place preprocessor directives in my Processing code to swap between GSVideo calls when the program is run on Linux and Quicktime calls when run on OSX. Is this possible?

Replies(4)

kooogy

Re: Conditional compilation possible?

2 years ago

no preprocessor in java, not as standard. but you can install 3rd party versions

google results, i've not used any of these:
http://www.slashdev.ca/javapp/
http://prebop.sourceforge.net/

have you seen the jmc video library in the documentation? it appears to be cross-platform. again, i've not used it but it sounds like it solves your problem.

http://www.mat.ucsb.edu/~a.forbes/PROCESSING/jmcvideo/jmcvideo.html

markstock

Re: Re: Conditional compilation possible?

2 years ago

I don't trust myself to successfully install custom Java libraries on both Linux and OSX. I have relatively little experience with OSX or Java, and even on Linux, the GSVideo thing took me the better part of the afternoon to get working. Why does Processing for Linux ship with a busted video library in the first place?

Can I put a try-catch block around the import commands and set a global that indicates which library worked?

Manindra29

Re: Conditional compilation possible?

2 years ago

How about detecting the type of OS you're running on? You could then switch between different library calls accordingly. Check out this example for detecting the OS type.

markstock

Re: Re: Conditional compilation possible?

2 years ago

Well, the os detection code works. But it appears that Processing will not continue execution if it can't find a requested library. So I'm back to square 1: install and use GSVideo on both platforms and ignore the default video library.