[Gambas-user] Trying to use libmpv, but got Segmentation faults on exit

[Benoît Minisini]

Le 17/01/2015 13:19, Antonio a écrit :
> I managed to make the project archive i'm attaching right now.
> You need to replace the string "loadfile videofile" with something
> existing on your filesystem fo course.
> Run the project, hit the button, wait 10 seconds, then close the form
> and you'll get the error on exit.
> Just replacing gb.qt with gb.gtk make it works.
> playing an audio only file will work too.
>
> thanks for looking into this,
>
> --
> Antonio Orefice
>
>

Qt crashes because :

- The libmpv library calls the X11 library inside threads.

- The X11 library can be called from different threads only if it is 
explicitly initialized by the XInitThreads() method.

- Qt4 does not call this method

The X11 documentation tells that :

- You must call this method before every other X11 function.

- You must call this method only if really needed (because it slows down 
the library I imagine).

So there is a problem: I can't know by advance that a shared library 
used at runtime would need that...

-- 
Benoît Minisini