[vlc-devel] Re: Multiple instances of vlc have incorrect instance references

Damien Fouilleul damien.fouilleul at laposte.net
Thu May 10 17:21:43 CEST 2007


I don't really understand anything you are saying, it is not possible to 
have a have vout without a matching libvlc instance.


Tony Anecito wrote:
> Hi All,
> While working with vlc I noticed that there were multiple instances of 
> v_out with incorrect instance references to vlclib. I suspect this has 
> something to do with multiple windows being displayed and need to get 
> a question answered about vlc code in order to help.
> What I have discovered in the windows environment that two calls to 
> get what should be the same instance to vlc come up with different 
> references. The fucntions I notice this in is:
> 1. Setting a window handle to an instance of libvlc
> file: video.c     (in vlc-trunk/src/control folder)
> function: libvlc_video_setParent()
> statement: var_SetInteger(p_instance->p_libvlc_int, "drawable", (int)d);
> 2. Retrieveing a window handle to an instance of libvlc
> file: vout_intf.c    (in vlc-trunk/src/video_output folder)
> function: vout_RequestWindow()
> statement: var_Get( p_vout->p_libvlc, "drawable", &val );
> When I do a call to setParent() and when a video is started the 
> reference for libvlc is different when two windows (one without a vlc 
> lib instance) I GET TWO DIFFERENT LIBVLC INSTANCES and there should 
> only be one! What this does is when switching between an application 
> with vlc embedded in a child window and in the same application a 
> child window without vlc the video pops out of the child window in a 
> separate standalone window because the call to RequestWindow points to 
> a different instance of vlc and the window handle returned from that 
> call in val is zero which causes a separate video output window to be 
> created.
> So in order to help figure this out and potentially help the team I 
> need to know where in the code the p_vout-p_libvlc gets set. I 
> verified the call to setParent occurs once. I tried tracking down the 
> p_libvlc variable but no luck on finding where.
> Thanks,
> -Tony
> ------------------------------------------------------------------------
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