[gst-devel] Does playbin2 work with alsaspdifsink?

[Julien Moutte]

Hi,

You would need to write an AAC to IEC958 converter and then raise the rank
of that element to a higher rank than the AAC decoders. You will also need
to make sure it's listed as a decoder otherwise playbin2 will ignore it.
That's how we handle SPDIF passthrough for AC3 and DTS in Moovida.

Best regards,
Julien Moutte,
FLUENDO S.A.


On Tue, Feb 8, 2011 at 10:51 AM, Akihiro TSUKADA <tskd2 at yahoo.co.jp> wrote:

> looking through the debug log,
> I have noticed that the uridecodebin continued to auto-plug aacparse to the
> caps
> "audio/mpeg, framed=true, mpeg=2", and then, instead of auto-plugging
> aac2spdif,
> it (wrongly) auto-plugged an faad AAC decoder, which outputs the caps
> "audio/x-raw-...",
>  and this caps naturally does not fit to alsaspdif, which requires
> "audio/x-iec958".
>
> So, uridecodebin selected faad, not aac2spdif, but I assigned them the
> ranks of
> MARGINAL and PRIMARY respectively.  In addition, I specified alsaspdif as
> an
> custom audio-sink, and it requires the caps "audio/x-iec958".....
>
> In order to prevent the above problem, I guess that
> uridecodebin must have the "caps" property set in
> playbin2::activate_group()
> or somewhere else. Is this right? or should aac2spdif or aacparse  do
> something?
>
> Cheers
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