[MPlayer-dev-eng] MS-ADPCM/Stereo Works

Michael Niedermayer michaelni at gmx.at
Sat Dec 29 21:52:25 CET 2001


Hi

On Saturday 29 December 2001 21:37, Michael Niedermayer wrote:
> Hi
>
> On Saturday 29 December 2001 21:05, Arpi wrote:
> > Hi,
> >
> > hmm. maybe the level/bias values changes between idct blocks in liba52,
> > and it causes voluem problems on different freq bands.
>
> the bias is always 384.0 in a52, and i didnt port that part (yet)
> i only ported the innermost loop of the imdct thing, the surroundings in
> imdct look identical to me except that the bias is missing in ac3 but i
> didnt port that so it should be ok
> the sin1 cos1 tables are different but changeing them doesnt help either
i got it ...the permutations are different ^_^
compare says 1350 +/-1 differences on a 25mb file
ill clean my code up a bit and than post a new patch 

[...]

Michael



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