strange problem with two sink elements in a pipeline

Le vendredi 26 janvier 2007 à 18:53 +0100, Edward Hervey a
écrit :
> > I attach a Python program which reproduces this
behaviour.
> > "python gst-bug.py 0" works fine.
> > "python gst-bug.py 1" exhibits the bug:
nothings gets at the sink.
> 
>   The problem is just that you need queues between your
demuxer and sinks.
> 
>   One comment though: your demuxer chain function
should return the
> return value from the push

Thanks for your answer !
However, it still doesn't work. I attach the updated Python
script.

Regards

Antoine.


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Sorry to insist, but no news on this one ?
I suppose there's a way to make this function with
gst-python, however
as of now I haven't found the solution...

Thanks

Antoine.


Le lundi 29 janvier 2007 à 14:03 +0100, Antoine Pitrou a
écrit :
> Le vendredi 26 janvier 2007 à 18:53 +0100, Edward
Hervey a écrit :
> > > I attach a Python program which reproduces
this behaviour.
> > > "python gst-bug.py 0" works fine.
> > > "python gst-bug.py 1" exhibits the
bug: nothings gets at the sink.
> > 
> >   The problem is just that you need queues between
your demuxer and sinks.
> > 
> >   One comment though: your demuxer chain function
should return the
> > return value from the push
> 
> Thanks for your answer !
> However, it still doesn't work. I attach the updated
Python script.
> 
> Regards
> 
> Antoine.




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On Mon, 2007-01-29 at 14:03 +0100, Antoine Pitrou wrote:
> Le vendredi 26 janvier 2007 à 18:53 +0100, Edward
Hervey a écrit :
> > > I attach a Python program which reproduces
this behaviour.
> > > "python gst-bug.py 0" works fine.
> > > "python gst-bug.py 1" exhibits the
bug: nothings gets at the sink.
> > 
> >   The problem is just that you need queues between
your demuxer and sinks.
> > 
> >   One comment though: your demuxer chain function
should return the
> > return value from the push
> 
> Thanks for your answer !
> However, it still doesn't work. I attach the updated
Python script.

You are not pushing data on the video pad, so the videosink
will never
preroll.

Wim

> 
> Regards
> 
> Antoine.
> 
>
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On 2/2/07, Antoine Pitrou <antoine.pitrouwengo.com> wrote:
>
> Sorry to insist, but no news on this one ?
> I suppose there's a way to make this function with
gst-python, however
> as of now I haven't found the solution...

  Look deeper at your demuxer chain function... look at
where you're
sending the buffers.

   Edward

>
> Thanks
>
> Antoine.
>
>
> Le lundi 29 janvier 2007 à 14:03 +0100, Antoine Pitrou
a écrit :
> > Le vendredi 26 janvier 2007 à 18:53 +0100, Edward
Hervey a écrit :
> > > > I attach a Python program which
reproduces this behaviour.
> > > > "python gst-bug.py 0" works
fine.
> > > > "python gst-bug.py 1" exhibits
the bug: nothings gets at the sink.
> > >
> > >   The problem is just that you need queues
between your demuxer and sinks.
> > >
> > >   One comment though: your demuxer chain
function should return the
> > > return value from the push
> >
> > Thanks for your answer !
> > However, it still doesn't work. I attach the
updated Python script.
> >
> > Regards
> >
> > Antoine.
>
>
>
>
>
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>


-- 
Edward Hervey
Multimedia editing developer / Fluendo S.A.
http://www.pitivi.org/
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Le vendredi 02 février 2007 à 11:20 +0000, Wim Taymans a
écrit :
> > Thanks for your answer !
> > However, it still doesn't work. I attach the
updated Python script.
> 
> You are not pushing data on the video pad, so the
videosink will never
> preroll.

But is it the reason why the audio sink never receives the
data that's
been pushed to it?
(that's what my problem is about)

Thanks

Antoine.



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On Fri, 2007-02-02 at 11:41 +0100, Antoine Pitrou wrote:
> Le vendredi 02 février 2007 à 11:20 +0000, Wim
Taymans a écrit :
> > > Thanks for your answer !
> > > However, it still doesn't work. I attach the
updated Python script.
> > 
> > You are not pushing data on the video pad, so the
videosink will never
> > preroll.
> 
> But is it the reason why the audio sink never receives
the data that's
> been pushed to it?
> (that's what my problem is about)
> 
What makes you think the sink did not receive the data? The
do_render
method will only be called when *all* sinks in the pipeline
are
prerolled. If you implement do_preroll in your element,
you'll see that
it prerolls fine but never goes to playing.

Wim

> Thanks
> 
> Antoine.
> 
> 
> 
>
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