[linux-dvb] Re: DVB Feature Wishlist

[Alex Woods <linux-dvb@giblets.org>]

> 1) Is there provision for a PC connected to the unit to drive the DEC2000
> overlay UI in any way, and conversely, for the unit to send commands to the
> PC through the USB link? I think this is obviously technically feasible,
> but that it's likely that no provision exists in the current firmware.
>

I think you're probably right here - technically feasible, but, so far as I 
know, no provision in the current firmware.

> And secondly, I have not seen this one asked.
>
> 2) The unit is obviously capable of
> 	- receieving an MPEG2 stream through the tuner
> 	- decoding an MPEG2 stream to a framebuffer and thus rendering it to a TV
> 	- passing the MPEG2 stream from the tuner to a PC connected through the
> USB
>
> 	So my question is, could you pass an MPEG2 stream to the DEC2000 decoder
> from the PC via the USB link?
>

In theory, yes.  The DEC's interface even looks geared up for it (has a 
setting with all bandwidth going towards the box).  Until the windows 
software does it, however, I have no way of knowing how the protocol would 
work.  And again, the firmware would need provision for it.

> 	In addition, if the first is true, would the unit be capable of
> simultaneously streaming MPEG2 data from the tuner TO the PC, while
> receieving an MPEG2 stream FROM the PC and decoding it to the framebuffer?

This would really depend whether USB bandwidth is per direction or per total 
of both.  Not sure which it is, but I suspect total.

Cheers,
Alex



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