[linux-dvb] Re: Any need for gszap?

[Holger Waechtler <holger@convergence.de>]

Niklas Peinecke wrote:
> Holger Waechtler wrote:
>
> > Niklas Peinecke wrote:
> >
> > > Hi,
> > >
> > > I've seen the EOF problem also. I got the impression that it is speed 
> > > related, i.e. if there is heavy load on the machine EOF occurs more 
> > > frequently. Nevertheless if you pipe the stream to a file and then 
> > > replay, there are no problems. Maybe the driver replays values <0 
> > > through /dev/dvb/adapter0/dvr0 (don't know if this is possible)?
> >
> >
> > no, it's not. You get the raw unmodified data from air through the dvr 
> > device. Data is only lost in case of buffer overflows, but the MPEG 
> > decoder should be able to tolerate corrupted MPEG packets silently.
> >
> > Holger
> Yes, but in which cases would there be an EOF generated when reading 
> from a _device_? When there is no data (written by the driver) then 
> mplayer should just stop and wait for data instead of exiting and 
> reproting end of file.
You should not get an EOF when the file is opened in blocked mode. If 
opened non-blocking you need to use select() or poll() to check whether 
data is available before you start reading from the file descriptor.

Holger



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