[MPlayer-dev-eng] [BUG] surround audio plugin broken

[D Richard Felker III]

On Mon, Jan 06, 2003 at 02:48:06AM +0100, Michael Niedermayer wrote:
> Hi
> 
> On Monday 06 January 2003 02:24, D Richard Felker III wrote:
> [...]
> > > btw IMHO libaf should NOT force float (i mean
> > > int->float->filter->float->int) by default.
> > > (only if it's requires (the requiested filter cannot operates on
> > > integer))
> >
> > Agree, it's lame. It can be fixed by -af-adv force=1. But the force
> > param is only supposed to affect auto-inserted stuff, and right now
> > the resample plugin forces things to float even if you load it
> > explicitly with -af resample=44100. I'm guessing that in the future
> > the force=1 option might do other things that lower quality too, so
> > it's very bad to require it to get rid of the float nonsense.
> >
> > > ppl are already reported slowdowns of 0.90-rc series compared to
> maybe we should optimize libaf a bit too ...
> it seems there is a modulo in the innermost loop in the resample filter for 
> example ...
> 
> 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).

Rich