disabling branch of a pipeline

[Christian Sell]

unfortunately, input-selector did not cut it for me. I need a solution that
minimizes processing overhead, as I am computing timeline thumbnails in
realtime. Using input-selector causes thousands of calls to my fill functions,
while my own solution yields 64 (which is still 2 times the desired result,
given that I have 2 sources).
 
I will now try my luck with gst_pad_set_active/inactive
 
 

> Sérgio Agostinho <sergio.r.agostinho at gmail.com> hat am 20. Juli 2015 um 13:36
> geschrieben:
> 
>  I would place an input selector after your MyBin and add the corresponding
> playbin (1, 2 or 3) dynamically to a single videosink.
>  For more examples on how to handle this dynamic interchange.
> 
> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/section-dynamic-pipelines.html
>  https://coaxion.net/blog/2014/01/gstreamer-dynamic-pipelines/ (example 1)
>   
>  Cheers
>  Sérgio
> 
>  2015-07-20 13:16 GMT+02:00 Christian Sell <christian at gsvitec.com
> <mailto:christian at gsvitec.com> >:
>    > >    one sink will do - it must only be possible to switch it from one
>    > > source to the other dynamically. I'll look at inputselector, the name
>    > > sounds promising
> > 
> >    > Josh Doe <josh at joshdoe.com <mailto:josh at joshdoe.com> > hat am 20. Juli
> >    > 2015 um 12:40 geschrieben:
> >    >
> >    >
> >    > On Mon, Jul 20, 2015 at 5:40 AM, Christian Sell <christian at gsvitec.com
> >    > <mailto:christian at gsvitec.com> > wrote:
> >    > > Hello,
> >    > >
> >    > > I have a pipeline which consists of several video streams, like this:
> >    > >
> >    > > PIpeline
> >    > > MyBin----------|
> >    > > MySource1 | -> playbin1 -> videosink1
> >    > > MySource2 |-> playbin 2-> videosink2
> >    > > MySource3 |-> playbin 3-> videosink3
> >    > > ------------------|
> >    > >
> >    > > The user can only view one source at a time, but can switch between
> >    > > viewable
> >    > > sources at will. This all works well already, but, as currently
> >    > > implemented,
> >    > > full video processing takes place for all streams all the time. What
> >    > > I would
> >    > > like to achieve is to "disable" those streams that are not currently
> >    > > being
> >    > > viewed such that the basesrc->fill function is not even called on the
> >    > > respective MySource elements. This is to avoid the significant
> >    > > processing
> >    > > overhead (buffer allocation + debayering).
> >    > >
> >    > > What would be the best way to do this?
> >    >
> >    > Do you actually want three separate sinks, or do you really just want
> >    > one? Have you looked at input-selector?
> >    > http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-plugins/html/gstreamer-plugins-input-selector.html
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