[gst-devel] Dynamically adding and removing branches of a tee...

[Wim Taymans]

On Thu, 2009-08-27 at 03:42 -0700, karma wrote:
> Hi,
> 
> Then how to REMOVE elements from a tee dynamically? 
> e.g. how to remove recording_branch from tee dynamically?

Try in this order:

pad block the tee srcpad
in the pad block, wake up the main thread to perform this:
unlink the tee srcpad
Set the elements after the srcpad to READY/NULL
release the tee srcpad
unblock tee srcpad

Wim


> 
> Thanks a lot
> 
> sincerely, karma
> 
> 
> joh-4 wrote:
> > 
> > Try below:
> > 
> > gst_element_set_state( recording_branch, GST_STATE_PAUSED );
> > gst_bin_add( GST_BIN(pipeline), recording_branch );
> > gst_element_link( tee, recording_branch );
> > gst_element_set_state( recording_branch, GST_STATE_PLAYING );
> > 
> > You may also want to move the first line to before and after element link
> > line.
> > 
> > Justin
> > 
> > 
> > 
> > On Mon, Jul 20, 2009 at 5:02 AM, machinegodzilla
> > <machinegodzilla at gmail.com>wrote:
> > 
> >>
> >> Hi,
> >>
> >> Is it possible to add or remove elements to/from a tee dynamically?
> >>
> >> My pipeline looks like that:
> >>
> >>                 /  [ queue | decodebin | autovideosink ]
> >> (playing_branch)
> >> filesrc | tee
> >>                 \  [ queue | filesink ]
> >> (recording_branch)
> >>
> >> When I start the pipeline only the playing_branch is connected. After a
> >> while I connect the recording_branch in the following way:
> >>
> >> gst_bin_add( GST_BIN(pipeline), recording_branch );
> >> gst_element_link( tee, recording_branch );
> >> gst_element_set_state( recording_branch, GST_STATE_PLAYING );
> >>
> >> This, however, results only in a 0 bytes file being created and nothing
> >> else.
> >>
> >> Is there anything missing here, or is this approach wrong?
> >> --
> >> View this message in context:
> >> http://www.nabble.com/Dynamically-adding-and-removing-branches-of-a-tee...-tp24568543p24568543.html
> >> Sent from the GStreamer-devel mailing list archive at Nabble.com.
> >>
> >>
> >>
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