use cffi's out-of-line mode to reduce import time

[tgarc]

Same request as for sounddevice:
spatialaudio/python-sounddevice#102

This change adds one more file to the repository but doesn't really change anything else other than improving import time

[bastibe]

Can you still run SoundFile without having a compiler installed?

[tgarc]

yup! Check out the details here

[bastibe]

Looks good to me. Did you check that this works on Windows, Linux, macOS?

[tgarc]

I tested it on Linux, and I can test it on Windows. I don't have access to a mac. Doesn't travis cover this though?

…

On Tue, Oct 17, 2017 at 2:19 AM, Bastian Bechtold ***@***.***> wrote: Looks good to me. Did you check that this works on Windows, Linux, macOS? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <https://github.com/bastibe/PySoundFile/pull/211#issuecomment-337140819>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAaVHFYMjQamheZ6fN1nGW6VWB5I9_FDks5stFUOgaJpZM4P5o17> .

[bastibe]

I think travis only runs this on Linux. I can run it on a Mac, but I don't have a Windows machine handy.

[bastibe]

I checked the Mac version and it works fine. Import times are indeed cut in half, on my machine:

> git checkout master
> time python -c "import soundfile"
        0.13 real         0.12 user         0.01 sys
> git checkout tgarc-out-of-line-mode
        0.06 real         0.15 user         0.01 sys

[bastibe]

I'll merge once you confirm that the Windows side works, too. Thank you very much for your efforts!

[tgarc]

Tested on a windows 7 box and again it cut down import time by half

[bastibe]

Thank you very much!