[gst-devel] running g_main_loop_run in separate thread question.

[suman kolaganti]

Thanks for giving one more way to get sync messages using only one
gmainloop.

On Wed, Mar 24, 2010 at 8:29 PM, Nicholas Panayis <dime at dimebar.f2s.com>wrote:

> Hi,
>
> Why not use:
>  gst_bus_enable_sync_message_emission(bus);
>  gst_bus_set_sync_handler(bus, (GstBusSyncHandler) my_sync_handler,
> &my_var);
>  gst_object_unref(bus);
>
> ?
>
> Dime
>
>
> Edward Hervey wrote:
> > On Wed, 2010-03-24 at 06:29 -0800, wanting2learn wrote:
> >
> >> I have the following code:
> >>
> > [...]
> >
> >> int main()
> >> {
> >>
> >>      start_pipeline();
> >>
> >>      while(1)
> >>      {
> >>         //do stuff here
> >>      }
> >>
> >>      //blah blah
> >> }
> >>
> >> Now my pipeline runs fine but I have kicked off a new thread to handle
> the
> >> bus messages:
> >> boost::thread thread_gstreamer2(task_gstreamer);
> >>
> >> void task_gstreamer()
> >> {
> >>    g_main_loop_run (g_Loop);
> >> }
> >>
> >>
> >> The reason I have added this in a new thread is because of the while(1)
> loop
> >> in my main() function.  If I put the g_main_loop_run in my main() before
> my
> >> while(1) loop then it would block.
> >> But the problem is that I do not receive any bus messages at all when I
> >> implement it like this.
> >> Can I do it this way??
> >>
> >>
> >>
> >
> >  I don't get it... why are you asking again and again about the same
> > question ? Tim replied to you a week ago how to handle bus messages when
> > you already have a main loop yet your persist in wanting to add a
> > GMainLoop.
> >
> >   So, to summarize:
> >   1) DO NOT USE GMAINLOOP IF YOU ALREADY HAVE A MAIN LOOP
> >   2) Read 1) again at least 50 times times
> >   3) Do as follow in your main()
> >
> > int main()
> > {
> >
> >      start_pipeline();
> >
> >      while(1)
> >      {
> >         // Do stuff here
> >         // See if we have pending messages on the bus and handle them
> >         while ((msg = gst_bus_pop (g_bus))) {
> >           // Call your bus message handler
> >           bus_call (g_bus, msg, nada);
> >           gst_message_unref (msg);
> >         }
> >      }
> >
> >      // Stuff before we exit the application
> > }
> >
> >   4) DO NOT USE GMAINLOOP IF YOU ALREADY HAVE A MAIN LOOP
> >
> > Also : http://en.wikipedia.org/wiki/Event_loop will be an interesting
> > read if you still see a difference between GMainLoop and "Main Loop"
> >
> >    Now, start2digest
> >
> >     Edward
> >
> >
> >
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> >
>
>
>
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