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

[Michael Niedermayer]

Hi

On Friday 28 December 2001 15:16, Arpi wrote:
> Hi,
>
> > it might be possible to do the imdct with 32-bit intergers (in mmx) but
> > overflows and such could be a problem i guess
>
> we know them from old libac3 :(
> it stil lhave some unfixed verflows causing strange noise with some files
>
> > > are all of those optims sse-only, or may work (mayeb with small mods)
> > > on 3dnow?
> >
> > some SSE, some MMX, iam not an 3dnow expert and i have no 3dnow compatile
> > chip, but i could try to do it blindly and we'll see if it works ...
>
> or maybe try to port 3dnow code from libac3. i don't know how different it
> is, but for example, idct is a strict algo, shouldn't be different.
> (but you know it may be - walken's idct vs. your simple_idct :))
well the bias is missing in ac3 at least i cant find it ...
ill TRY to port the imdct stuff ;)
lets hope i dont port the bugs too

Michael