[Kwintv] Still scaling problems.

[George Staikos]

  It is XFree86 not scaling.  BTTV doesn't scale in general.  The real problem 
is that the XFree86 driver is reading the bttv input and not scaling it with 
the Xv scaler.  Port 59 should have a loop that does:

   - read image from BTTV/V4l
   - write image through port 60
   - loop

It seems to either not be scaling in port 60, or not even writing through port 
60 (!?!).  Strange....


On Tuesday October 15 2002 12:14, Michael Kedl wrote:
> I have been evaluating the X server from SI Graphics (it runs for 25
> minutes for the eval version)
>
> I find that xawtv and other xv tv apps will scale to fullscreen with it.
> I then switch to the XFree server that came with RH8 and it doesn't
> scale.
>
> Looking at the xawtv -hw output on the RH8 server:
> This is xawtv-3.74, running on Linux/i686 (2.4.18-14custom)
> looking for available devices
> port 59-59                              [ -xvport 59 ]
>     type : Xvideo, video overlay
>     name : video4linux
>
> port 60-60
>     type : Xvideo, image scaler
>     name : ATI Radeon Video Overlay
>
> /dev/video0: OK                         [ -device /dev/video0 ]
>     type : v4l
>     name : BT878(AVerMedia TVCapture 98)
>     flags: overlay capture tuner
>
> The SI Graphics server:
> This is xawtv-3.74, running on Linux/i686 (2.4.18-14custom)
> looking for available devices
> port 85-85                              [ -xvport 85 ]
>     type : Xvideo, video overlay
>     name : BT878(AVerMedia TVCapture 98)
>
> port 86-86
>     type : Xvideo, image scaler
>     name : CODEC
>
> /dev/video0: OK                         [ -device /dev/video0 ]
>     type : v4l
>     name : BT878(AVerMedia TVCapture 98)
>     flags: overlay capture tuner
>
> It looks like the XI server correctly uses the BT878 directly.
> It looks like the XFree server is using video4linux (which I believe
> doesn't scale).
>
> So:
> 1) I don't think its a hw problem
> 2) I don't think its a kernel problem
> 3) It looks like its an XFree problem
> 4) but it might also be related to the BT drivers not "telling" XFree
> about itself correctly
>
> I guess I'll try to download the latest XFree (groan......)
>
> On Tue, 2002-10-15 at 09:52, George Staikos wrote:
> > On Tuesday October 15 2002 03:34, Alexandre Aufrere wrote:
> > > >    As a follow up, I have found that Xv scaling still works here so
> > > > it is most likely a problem on your systems, perhaps in XF86.  I
> > > > would suggest have a look for XF86 patches or updates, as well as
> > > > kernel updates.  I don't know if the XF86 ATI driver requires
> > > > anything in the kernel or not but maybe it has something to do with
> > > > it.  I find it very strange that scaling is not working for you
> > > > though.  I dont' see how this could have anything to do with QtVision
> > > > itself.
> > >
> > > Well, about the driver, i highly doubt it, since i was trying to use
> > > both retail (from RH) drivers and drm-kernel, and from GATOS (last
> > > ones, number 15), both drivers and drm-kernel modules as well.
> > > Could it be a patch in XFree86 RH RPMs themselves ?
> > > I'm really getting sick of that distro.. will get away soon, Mandrake
> > > or Debian... Hope it'll solve the problem :-))
> >
> >   It might be even...  But I really don't know.  I'm really sorry but
> > there's not much I can do short of installing RH 8.0 which I dont' have
> > time for right now.  My next suggestion, as extreme as it might be, is to
> > try XF86 from CVS and see if that helps.
> >
> > --
> >
> > George Staikos
> >
> > _______________________________________________
> > kwintv mailing list
> > kwintv@mail.kde.org
> > http://mail.kde.org/mailman/listinfo/kwintv
>
> _______________________________________________
> kwintv mailing list
> kwintv@mail.kde.org
> http://mail.kde.org/mailman/listinfo/kwintv

-- 

George Staikos