[MPlayer-dev-eng] Re: Vorbis decoding performance

[Michael Niedermayer]

Hi

On Tue, Aug 08, 2006 at 07:44:29PM +0200, Aurelien Jacobs wrote:
> On Tue, 8 Aug 2006 10:07:12 +0200
> Michael Niedermayer <michaelni at gmx.at> wrote:
> 
> > Hi
> > 
> > On Tue, Aug 08, 2006 at 12:28:38AM +0200, Balatoni Denes wrote:
> > > Hi!
> > > 
> > > hétf?? 07 augusztus 2006 23.09-kor Michael Niedermayer ezeket a bolcs 
> > > gondolatokat fogalmazta meg:
> > > > hmm floating point emulation is slow sure but it shouldnt be that slow ...
> > > >
> > > > [...]
> > > 
> > > Actually, tremor being at least 20 times faster than floating point whatever 
> > > is what I would have expected on arm. 
> > > 
> > > (wma - floating point - on a 206 mhz arm cpu needed 300% cpu time, compared to 
> > > tremor or libmad's 10-20%, when I tested these a few years ago on a strongarm 
> > > 1100 206 mhz cpu).
> > 
> > maybe you want to look at libavutil/softfloat.h
> > its some simple software floating point thingy, benchmark code is in 
> > libavutil/softfloat.c, if its fast on arm [...]
> 
> Nice benchmark, but unfortunatly there's not START/STOP_TIMER implementation
> for ARM :-(
> Maybe I should try to implement one using the Xscale specific Performance
> Monitor...

sure

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

In the past you could go to a library and read, borrow or copy any book
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