[vdr] Re: KVDR with DXR3?

[Stefan Schluenss <dxr3_osd@schluenss.de>]

Hi,

On Saturday 14 June 2003 00:26, you wrote:
> At Freitag, 13. Juni 2003 17:06 Guido Fiala wrote:
> > I admit - just making a video device is easier than making one playing
> > back MPEG's. That would mean to emulate the missing part (compared to an
> > full-featured one) to make it look like an hardware one to vdr.
> > At least you would'nt need to plugin full applications into vdr to make
> > it playback in software...
>
> In /dev/video0, there is only plain video data, no MPEG. That all happens
> before any output device. But what's visible on /dev/video0 with a full
> featured card, is the decoded picture (means plain video data) with the OSD
> renderes on it. Basically it's the same that goes to the TV-out.
>
> So it should be possible with DXR3 as it already is with DVB...
No,  it isn't. The decoded video data has to be send via PCI bus to the CPU 
which is done via Busmaster-DMA (AFAIK) for dvb-cards.
The dxr3 doesn't have such a hardware capability It could only overlay the 
decoded analog video signal on the vga monitor signal (loop-thru).

Stefan.



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