[vdr] Re: Zapping

[Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>]

Dennis Noordsij wrote:
> 
> > I did some tests and found that when I remove the two lines
> >
> >      CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, false));
> >      CHECK(ioctl(fd_video, VIDEO_SET_BLANK, false));
> >
> > at the end of cDvbDevice::SetChannelDevice() this doesn't happen any more.
> > The reason for these lines was that at the beginning of
> > cDvbDevice::SetChannelDevice() these parameters are set to 'true' in order
> > to avoid noise when switching, so I thought it would be a good idea to set
> > them back to 'false' after successful tuning. However, apparently the
> > driver does this by itself, and doing it explicitly causes the reported
> > flashes.
> >
> > Please verify if this helps you, too.
> > The same two lines are also at the end of cDvbApi::SetChannel() in version
> > 1.0.4, so you might want to try it there. too.
> >
> > Klaus
> 
> Hmm.. that sounded like a good explanation! And I feel bad having to tell you
> it did not fix it :-((   (tested with 1.1.13)
> 
> On some channel switches it does not happen, on some it does, and every once
> in a while it will flash twice instead of once.
> 
> Though the patch probably does help, the flash is not yet eliminated for me. I
> hope other people have more positive reports :-)

Well, then there must still be another problem.
Here with my version 1.1.13 I was definitely able to reproduce the glitches
with the lines active, and they were gone after removing them.

Klaus
-- 
_______________________________________________________________

Klaus Schmidinger                       Phone: +49-8635-6989-10
CadSoft Computer GmbH                   Fax:   +49-8635-6989-40
Hofmark 2                               Email:   kls@cadsoft.de
D-84568 Pleiskirchen, Germany           URL:     www.cadsoft.de
_______________________________________________________________


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