[XviD-users] General Xvidcore questions

[Michael Militzer]

Hi,

Quoting Harsha Viswanath <harsha at genesis-microchip.com>:

> I would appreciate answers for a couple of general questions -
> 
> Can the Xvidcore code be used as a reference decoder for the profiles
> and levels that it supports?  What is the level of testing that it has
> undergone?
>  I find this implementation a much cleaner implementation compared to
> Momusys. 

yes, the code is more easily understandable and we're proud about this ;-)
Nonetheless, xvidcore is not meant to replace a reference implementation,
so I wouldn't recommend such a use (even though I know people do so). The
decoder has been tested with some of the MPEG conformance bitstreams,
however there is no *full* compliance to any profile - more below:

> Right now Xvidcore does not support ASP profile right?  If no, then when
> can we expect support for this profile. 

The latest versions of xvidcore (1.0 RC3 source code or dev-api-4 branch
on xvid cvs) support the advanced simple profile - at least the most common
features. This means: Quarterpixel MC, BVOPs and Global MC are supported,
but the following is missing for full compliance: data partitioning, 
reversible vlc and field prediction. So you see, XviD can't serve as a
complete replacement for a reference implementation.

Hope this helps!

regards,
Michael