[vlc-devel] [PATCH] commit: Use the signal interface and fix signal handling ( Rémi Denis-Courmont )

bl4 bl4 at playker.info
Wed Jun 4 18:05:35 CEST 2008

bl4 wrote:
> git version control wrote:
>> vlc | branch: master | Rémi Denis-Courmont <rem at videolan.org> | Thu 
>> May 29 22:50:19 2008 +0300| [a8f72d056fc842e3d338971ebf2a7511c59855a5]
>> Use the signal interface and fix signal handling
>>> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=a8f72d056fc842e3d338971ebf2a7511c59855a5  
> I'm afraid this commit broke the vlc gui in my case. When I pass a 
> filename on the command line, vlc starts playing, but the status bar 
> is empty, the title bar is unchanged, the progress bar doesn't move 
> and the Pause/Play button doesn't work. Everything goes back to normal 
> when I stop and play again. Everything is fine when I use Media | Open 
> File menu to open a file.

I narrowed down the diff to:

@@ -134,6 +125,7 @@ int main( int i_argc, const char *ppsz_argv[] )

    if (vlc != NULL)
+        libvlc_add_intf (vlc, "signals", NULL);
        libvlc_add_intf (vlc, NULL, &ex);
        libvlc_wait (vlc);
        libvlc_release (vlc);

libvlc_add_intf (vlc, "signals", NULL);


libvlc_InternalAddIntf( vlc->p_libvlc_int, "signals", true );

Inside this function, the interface is created and started:

p_intf = intf_Create( vlc->p_libvlc_int, "signals" );
intf_RunThread( p_intf );

Because the last argument to libvlc_InternalAddIntf is true, it also calls:

playlist_Play( libvlc_priv(vlc->p_libvlc_int)->p_playlist );

I believe this is the cause of the issue. Without this playlist_Play() 
call, there are no problems with GUI and signals are handled in the new 
way, so the last argument to
libvlc_InternalAddIntf should be false.

I'm attaching a patch that adds a function libvlc_add_intf_noplay and 
uses it to initialize the new signal interface. I don't know if it's the 
best way to solve this issue, please let me know if you have any other 


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