[pvrusb2] YUV/PCM Format (demux)

[Mike Isely]

On Fri, 9 Jan 2009, Carsten Meier wrote:

> Am Fri, 9 Jan 2009 07:12:29 -0500
> schrieb Graham Royston <whiffles at killsbabies.com>:
> 
> > On Fri, 9 Jan 2009 12:26:44 +0100
> > Carsten Meier <cm at trexity.de> wrote:
> > 

   [...]

> > > 
> > > Hi,
> > > 
> > > do I understand it correctly in that it is possible to get
> > > uncompressed, raw video and audio data from the pvrusb2? Can it be
> > > requested from userspace by the normal VIDIOC_S_FMT ioctl?
> > > 
> > > Thanks,
> > > Carsten
> > 
> > Good Day,
> > 
> > It is possible, but not from userspace at the moment, as it is not
> > implemented by the driver. It requires that the driver be patched to
> > send different commands and to not look for an MPEG header. My patch
> > to do so is a quick hack for testing purposes, and is not suitable for
> > distribution. Also, I don't know if this is possible on all devices
> > and firmware, but it works on my own (24xxx).
> > 
> > Thanks,
> > Graham
> 
> It would be very cool if such a feature is available. Then I can decode
> PAL-Plus signals in software and encode it with Dirac without loss of
> quality.
> 
> I'm looking forward... :)

Yes, I've been talking to Graham about this.  It appears that he figured 
out the missing puzzle piece(s) to make this work.  After I deal with 
the cx25840 breakage this weekend I'm going to see what I can do to 
cleanly implement this!  Stay tuned...

  -Mike

-- 

Mike Isely
isely @ pobox (dot) com
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