[linux-dvb] Old and new DVB API: Differences? Porting Howto?

[Marcus O.C. Metzler <mocm@convergence.de>]

Peter Funk writes:
 > Hi,
 > 
 > After some browsing through the READMEs and other information I found
 > within the DVB and VDR directories and in the mailing list archive,
 > I would like to verify my understanding:
 > 
 >  - there are two different APIs (application programmer interfaces)
 >    to access the DVB hardware.  An older one, which is currently used 
 >    by VDR and by the DVB/apps/gVideo application and a newer one, which 
 >    is used by DVB/apps/tuxzap, tuxview and ntuxplayer.  

gVideo is using the new linux dvb api for changing channels and the
old one (modified v4l) for recording and playback.


 >  - Applications using the older API use the DVB devices exclusively, so that
 >    it is impossible to run VDR in parallel with for example
tuxview.

correct.

 >  - If tuxview and vdr should run in parallel, vdr must be ported to the
 >    new API first.
Yes.

 >  - Viewing VDR needs a TV connected to video output of a DVB-S card.
 >    Viewing on the computer monitor is currently no possible.
 > 
 > Please correct me, if I'm wrong.  I would also like to know, if anybody
 > is already working on this and how hard this would be.  
 > Another (maybe newbie) question: Would the hardware allow to view 
 > the OSD (on screen display) overlay of VDR within a tuxview window?

The problem is that we currently don't have a separat osd device, so
that vdr still needs to open /dev/video which would prevent tuxview
from opening it. As soon as we have an osd device you could view all
the osd output with tuxview. 

Marcus

---------------------------------------------------------------------
Dr. Marcus Metzler                             
mocm@netcologne.de                     http://www.metzlerbros.de
mocm@convergence.de                    http://www.convergence.de

Convergence Integrated Media GmbH          
Rosenthaler Str. 51                   
D-10178 Berlin                             
---------------------------------------------------------------------


--- 
Info:
To unsubscribe send a mail to listar@linuxtv.org with "unsubscribe linux-dvb" as subject.