[FFmpeg-devel] releases and stuff

Michael Niedermayer michaelni
Wed Feb 11 15:29:51 CET 2009


On Wed, Feb 11, 2009 at 02:51:43PM +0100, Benjamin Larsson wrote:
> Michael Niedermayer wrote:
[...]
> >
> >   
> >> Regarding fixed point tables and stuff, the fft routines might behave 
> >> differently also. To be really sure a complete fixed point version would 
> >> be needed.
> >>     
> >
> > how hard is it to write a fixed point fourier transform? and i mean fourier
> > not fast fourier
> >
> >
> >   
> 
> The ac3 encoder already have a fixedpoint fft and mdct. We could use 
> those where needed. Fixed point generation of the mdct tables should be 
> easy to implement also. Would a solution with a -regtest parameter be 

we have -bitexact alraedy and yes fixed point code should then be used
where possible


[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

There will always be a question for which you do not know the correct awnser.
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