Using audio external in 64bit ofxPd app causes crash (WinVS)

[cuinjune]

I figured out using a custom Pd audio external in 64bit ofxPd app(built with Visual Studio 2015) causes crash on startup.

This problem doesn't occur with 32bit ofxPd app and everything works fine. And 64bit app doesn't crash if I don't use the custom audio external in Pd patch. (it works fine with internal audio objects and externals that don't use audio) Also, it doesn't crash if I comment out dsp_add() function in void sine_tilde_dsp().

I created a simple example so anyone can easily test this on Windows. Here's the zip archive of my source codes and a test pd patch. Archive.zip

main.cpp, ofApp.cpp and ofApp.h are just simplified version of pdExample which just opens "pd/test.pd" in the setup() function; sine_tilde.c and sine_tilde.h are basically copy/paste of pd's osc~object. Lastly, test.pd basically looks like this [sine~ 440] -> [*~ 0.1] -> [dac~] . If I just replace [sine~ 440] with [osc~ 440], the 64bit app works fine and I can hear the sound too.

@danomatika Any idea why it happens? Thanks in advance!

[danomatika]

You probably need to set the Pd's long int type. It's a known issue with 64 bit windows: https://github.com/pure-data/pure-data/pull/7

Add the following define to the 64 bit build target:

-DPD_LONGINTTYPE=__int64

[cuinjune]

Thanks for the reply. I tried adding it but no luck.

I also tried adding -DPD_LONGINTTYPE=__int64 into 'C/C++ -> Command Line -> Additional Options' or 'Linker -> Command Line -> Additional Options' but didn't work either.

[danomatika]

Note that the 64bit externals also need to be built with that define set and that existing 32bit externals will not load with a 64bit Pd/libpd.

[danomatika]

An updates on this? I've updated the libpd version, so perhaps this is now fixed.

[danomatika]

Closing due to inactivity.