[MPlayer-dev-eng] [BUG] surround audio plugin broken
Anders Johansson
ajh at watri.uwa.edu.au
Mon Jan 6 04:41:29 CET 2003
Hi,
> > > > ill try to optimize the libaf stuff tomorrow perhaps ...
> > >
> > > Cool. AC3 decoding and resampling to 44100 are the two biggest
> > > bottlenecks preventing realtime dvd playback on my box right now! With
> > > Fabrice working on the ffmpeg ac3 decoder and libaf optimized, I
> > > imagine I'll finally be able to play dvds (without -framedrop).
> >
> > Try the linear interpolation it is faster than the filter bank
> > resampling.
>
> It does indeed help, reducing sound cpu usage by a couple percent.
> However, I expect that an optimized implementation of the filter bank
> code could be even faster.
It will never be faster than linear interpolation cause it only
duplicates or removes samples (no addition or multiplication at all).
>
> Rich
>
//Anders
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