[Openchrome-users] Custom resolution on CX700M2

[Xavier Bachelot]

Manuel Werlberger wrote:
> Xavier Bachelot wrote:
>> Manuel Werlberger wrote:
>>> Unfortunately not an answer but another question for the EX10000EG. I 
>>> currently use the unichrome drives (which almost made me kick out the 
>>> box out of the window) with xvmc support.
>> You're probably mixing stuff here. The unichrome driver doesn't include
>> the xvmc code anymore. That's one of the reasons why openchrome exists.
>> And the unichrome driver doesn't support CX700 anyway.
> 
> The unichrome driver doesn't support? Isn't the unichrome driver the one
> from via? 

No, I refer to unichrome.sf.net.

> At least i compiled sth from via for my cx700m2 and drm/xvmc
> is working.

VIA currently have 2 flavors for their driver :
- One with closed (binary only) parts at viaarena.com. The closed parts 
include xvmc and it needs a modified mplayer or xine-lib running as root 
to take advantage of hardware mpeg acceleration.
- A trimmed down one with only open-sourced parts, but w/o xvmc support, 
amongst other things. See linux.via.com.tw.

> 
>>> Is the openchrome driver 
>>> already working with the board and the mpeg2/4 decoding chips? Would be 
>>> really great and i would change the setup immediately if this is 
>>> possible....
>> CX700 is supported by the openchrome driver.
>> For some of the chips, hardware mpeg2 decoding works. This unfortunately
>> doesn't include CX700 yet.
> 
> Is there a plan that hardware mpeg2/4 decoding works in near future?
> Would be _the_ feature for me.
>
Indeed, it is one of the killer feature of this chipsets. Unfortunately, 
MPEG patents are a legal minefield, and it will take time for VIA to 
even release the mpeg engine docs, and even more to release code, if at 
all possible. We are working with VIA toward this goal, though. Without 
the docs, the only way forward is to reverse engineer VIA closed driver, 
like it was done for the earlier versions of the hardware mpeg engine, 
but nobody is up to that at the moment.

> Reagards and thanks for the infos,
>  Manuel

Regards,
Xavier