[FFmpeg-devel] Concerning RV40 chroma MC functions

[Kostya]

On Tue, Nov 25, 2008 at 06:58:36PM +0100, Michael Niedermayer wrote:
> On Tue, Nov 25, 2008 at 07:50:33PM +0200, Kostya wrote:
> > On Tue, Nov 25, 2008 at 03:37:34PM +0100, Michael Niedermayer wrote:
> > > On Tue, Nov 25, 2008 at 01:07:02PM +0200, Kostya wrote:
> > [...] 
> > > > * should RV40 designers burn in hell?
> > > 
> > > yes
> > 
> > Another nicety - spot the fishy thing:
> > 
> > gc_M_InterpolateChromaTable4
> >                 dd offset M_MCCopyChroma4_H00V00 ;	DATA XREF: .got:0004DD70o
> > 		dd offset M_MCCopyChroma4_H01V00
> > 		dd offset M_MCCopyChroma4_H02V00
> > 		dd offset M_MCCopyChroma4_H03V00
> > 		dd offset M_MCCopyChroma4_H00V01
> > 		dd offset M_MCCopyChroma4_H01V01
> > 		dd offset M_MCCopyChroma4_H02V01
> > 		dd offset M_MCCopyChroma4_H03V01
> > 		dd offset M_MCCopyChroma4_H00V02
> > 		dd offset M_MCCopyChroma4_H01V02
> > 		dd offset M_MCCopyChroma4_H02V02
> > 		dd offset M_MCCopyChroma4_H03V02
> > 		dd offset M_MCCopyChroma4_H00V03
> > 		dd offset M_MCCopyChroma4_H01V03
> > 		dd offset M_MCCopyChroma4_H02V03
> > 		dd offset M_MCCopyChroma4_H02V02
> > 
> > (I assure you, the same thing occurs also for C function list and in another
> > version of RV40 decoder).
> 
> Look in the A003 h.264 draft, search for "funny", maybe theres a relation,
> its the same 33 position ...

Well, it's for luma and RV40 has that "funny" mode there (personally I find that
drafts were more honest than the final standard). Unfortunately there's nothing
on chroma MC there.
 
> [...]
> -- 
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB