Re: libdvdread: Can't seek to block 256

Tue Dec 09 2003, Felix Kurth wrote:
> >
> > > libdvdread: Using libdvdcss version 1.2.8 for DVD access
> > > libdvdread: Can't seek to block 256
> > > libdvdread: Can't seek to block 256
> > > libdvdread: Can't open file VIDEO_TS.IFO.
> > > (iodump.c) unable to open directory "/dev/dvd"
> > > 
> > > im not using ide-scsi, since its deprecaded on that kernel, also cd/dvd
> > > -burning ist broken with it. (Tried it with ide-scsi, dvd-reading does
> > > work, but not cd-burning)
> > > 
> >
> > dvd-reading with tcprobe or just mount ls/cp and such?
> > 
> 
> i debuged  a little bit:
> it bombs out on line 
>  788 of dvdread/dvd_reader.c
>    
> ret = dvdinput_seek( device->dev, (int) lb_number );
> 
> with ret == -1,
> device->dev seems valid, 
> lb_number == 256
> 
Yeah this was basicly what could be seen from the trace output.

> gdb refuses to step in dvdinput_seek() since this is a function pointer.
> Or i'am to stupid.
> 
Well it really shouldn't but who knows.

That was why I sugested you add something like
fprintf(stderr, "I am <..> offset is %d", [lb_number|offset|block|..]); 
to the functions that it will call (seee my previous email).
This should give you an idea of where (if anywhere) things go wrong.

-- 
Håkan Hjort