[linux-dvb] Re: AW: Re: API changes (was: C/A routing Question)

[Holger Waechtler <holger@convergence.de>]

Florian Schirmer wrote:
> B) Writing PS/AVPES
>
> IMHO you simply can't and shouldn't do that. Writing anything else except TS
> to the demux doesn't make any sense to me. What do you expect the demux to
> do with PES? The only job of the demux is to route / demultiplex / convert
> TS into someting else (different queues, PES, sections, ...)
>
> If you write non-TS data the only reason could be playback. So it is a lot
> more straight forward to write that data directly to the decoder. And that
> is excatly what /dev/dvb/adapter0/{audio0,video0} are for. Lets keep the
> demux TS only.
What about DVD Program Streams? When your hardware can handle these 
streams directly you probably don't want to demultiplex the stream in 
userspace...


> > - we need PS (and maybe AVPES) playback; details are not clear yet,
> > but I think this means adding the capability to filter on the
> > PS stream id, and adding a corresponding field to struct dmx_caps
>
> See above.
dto.


> > In a system with more than one MPEG decoder DMX_OUT_DECODER is not enough. 
> > It will be necessary to specify which decoder. I think that the video and 
> > audio decoder API should have *_SET_SOURCE ioctls that connect them to the 
> > appropriate demux.
Right now the decoders are distinguished by the pes_type field. Not very 
intuitive, but works.

But you're right, *_SET_SOURCE ioctls in the decoder API would be cleaner.

Holger



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