[linux-dvb] Re: popen for ac3 and thread (ringbuffer) problem

[Stephan Schreiber <stephan@sschreiber.de>]

Hi Klaus & Andreas,

I can confirm it.
While watching DVD's, I've become very careful when deciding whether I 
should dare to open the OSD menu.
(For changing the language for example).
When the driver and vdr are freshly loaded after a reboot, usually the 
first two times OSD works.

Here's what happens then (ONLY when watching a DVD or other AC3 recording):
Instead of showing the menu, the picture freezes.
After I terminate vdr the driver runs into OUTCOMMAND ERROR and ARM RESET.
Then it hangs to the point where I have to reboot (Make rmmod complains 
about busy modules).

Andreas' patch works for me. (COOL!)

I have a DVB-C, maybe that's the reason for all the hassle?

Greetings
Stephan



At 11:11 15.08.2001 +0200, you wrote:
>Andreas Vitting wrote:
> >
> > Hi Klaus,
> > do you know about the problem with the popen function ? You opened it 
> into a
> > new Thread, so the thread is the main process for the ac3 decoder (-shell).
> > All standard outputs going to the pipe, isn't it ??
> > Here is my problem:
> > if i open the osd menu (with and w/o ac3 data), vdr crashes and after a
> > while the dvb driver too (after 10-20 seconds). I have changed for
> > experimental purposes the popen command to the cDvbApi init routine 
> (near to
> > OstOpen) and know, you don't believe this,no crashes anymore.
> > This behavior is as soon as we start the vdr with the -a switch (it doesn't
> > matter, if the recordings were with or w/o ac3 data)
>
>Can anybody else confirm this behaviour?
>
>I like the idea that the AC3 decoder ist started only when an actual
>replay is performed, and not running all the time, so I would like
>to be very certain about the necessity of this change.
>
>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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