[gst-devel] Forcing synchronisation in a specific part of a pipeline

[Edward Hervey]

Maybe it would be better then to have a proper alaw parser. It shouldn't
be too hard to write one in the rawparse plugin (inspiring yourself from
the rawaudioparse). alaw is a *really* simple format after all.

  Edward

On Wed, 2009-02-18 at 08:47 +0000, SP GLE wrote:
> Won't work...
> 
> > > We tried by adding an identity with sync=true but tis
> > one requires 
> > > segments with GST_FORMAT_TIME and not BYTES as
> > provided by filesrc.
> 
> 
> --- En date de : Mer 18.2.09, Edward Hervey <bilboed at gmail.com> a écrit :
> 
> > De: Edward Hervey <bilboed at gmail.com>
> > Objet: Re: [gst-devel] Forcing synchronisation in a specific part of a pipeline
> > À: spglegle at yahoo.fr, "Discussion of the development of GStreamer" <gstreamer-devel at lists.sourceforge.net>
> > Date: Mercredi 18 Février 2009, 9h43
> > On Wed, 2009-02-18 at 08:29 +0000, SP GLE wrote:
> > > Hello,
> > > 
> > > Using the following pipeline :
> > >
> > [filesrc]---->[rtppcmapay]---->[rtpdtmfmux]-----...--->[fakesink
> > sync=true]
> > >                                  /\
> > > [rtpdtmfsrc]----------------------
> > > 
> > > When playing a DTMF the rtpdtmfmux locks the stream
> > and unref all 
> > > buffers from the filesrc, but without syncing on the
> > clock, so file 
> > > reading looses sync and all buffers are played as fast
> > as possible.
> > > 
> > > How can we sync the filesrc part before injecting in
> > rtpdtmfmux ?
> > > 
> > > We tried by adding an identity with sync=true but tis
> > one requires 
> > > segments with GST_FORMAT_TIME and not BYTES as
> > provided by filesrc.
> > > 
> > > The probleme can be reflected by this cmd :
> > > A/ Working Pipeline
> > > gst-launch filesrc location=toto.alaw !
> > "audio/x-alaw,rate=8000,channels=1" ! identity
> > datarate=8000 ! rtppcmapay ! fakesink sync=true
> > > 
> > > B/ How to make previous cli works if disabling
> > sync=true on fakesink.
> > > 
> > > 
> > > Any idea is welcome :).
> > 
> >   Use the sync property of identity :)
> > 
> > > 
> > > Regards.
> > > 
> > > 
> > >       
> > > 
> > >
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> 
>