Re: [gst-devel] reg:non-conventional encoder/decoder plugin development

[Ambily N <am...@gm...>]

Thanks stefan.
There is one issue at the sink side in this case.

For determining late packets and dropping, for a normal sink like SDL ideo
sink, the dropping can be done at the raw frame level.

In our case, we dont have any control over the data after the decode call
and dropping and all need to be done in the compressed video, before being
fed to the decoder.
This could be a problem when P and B frames are present in video right?

Could you please guide to how to handle the late packets in the sink in this
case?

Regards
Ambily



On Sun, Oct 5, 2008 at 1:28 AM, Stefan Kost <en...@ho...> wrote:

> hi,
>
> Ambily N schrieb:
>  > Hi
> >
> > We are trying to develop gstreamer plugins for one hardware H.264
> > encoder and decoder.
> > One issue we are facing is, the encoder library doesnt provide an
> > interface for providing an input buffer for accepting uncompressed video.
> > Instead it captures from HDMI/Component video/DVI interface,for which
> > there exists an option for selection.
> >
> > Similary, the decoder doesnt provide a decoded output buffer.
> > Instead it sends output to HDMI/DVI.
> >
> > So our understanding is , due to these restrictions,the plugins cant be
> > developed as normal trasnsform plugins.
> >
> > Instead the encoder plugin need to be developed as a source plugin which
> > generates encoded data and the decoder plugin can be developed as sink
> > plugin which handles both decoding and rendering.
> >
> > Is this understanding correct and is this a right approach? could
> > experts please comment on this?
>
> Yes, thats correct. Have a look into src/sink baseclasses to reuse as much
> as
> possible form there. Especially the sink is important as it is resposible
> for
> A/V sync.
>
> Stefan
>
> >
> > Regards
> > Ambily
> >
> >
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