[linux-dvb] Re: V4 API proposal

["Haber, Thomas" <THaber@tee.toshiba.de>]

Hi Florian,

> 
> Hi,
> 
> >I can live with both situations. A reason for having seperate device 
> >is that we don't find a straight interface that is suitable for
> >both streamtypes. But if this is possible, and it makes sense, than 
> >i don't see a reason why not putting them into one. 
> >That the implementations are differnt is not important.
> >At the end it shall demultiplex a media stream.
> >Do you agree ?
> 
> Yes i do agree. BUT :-) IMHO combining the two things will 
> bloat the API a
> lot. I must admit that i dont have deeper knowledge of e.g. 
> DVD/AVPES/..
> Formats but i try to explain:
> 
> When routing/demuxing TS you do that based on:
> 
> - PID
> - Section filters

Yes you use 
 * packet id for single pes streams (audio,video, ...)
 * packet id [+ table id [+ n bytes section header Filter]] for sections
 * additionally you get the PCR on a PID
 
> 
> When routing/demuxing PS/AVPES/... you do that based on:
> 
> - Stream type
> - camera angle
> - language
> - subtitle
> - ...

No you only use

 * streamid for the streams (audio, video ,...) (corresponds to packetid)
 * streamid for program stream map and program stream directory (somehow similar to tables)
 * you additionally get the SCR (like PCR; in case of PS)


Regards,

Thomas


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