[Ffmpeg-cvslog] r6096 - trunk/libavcodec/bitstream.h

[Michael Niedermayer]

Hi

On Wed, Aug 30, 2006 at 01:46:41AM +0200, Aurelien Jacobs wrote:
> On Sat, 26 Aug 2006 13:37:34 +0200 (CEST)
> michael <subversion at mplayerhq.hu> wrote:
> 
> > Author: michael
> > Date: Sat Aug 26 13:37:33 2006
> > New Revision: 6096
> > 
> > Modified:
> >    trunk/libavcodec/bitstream.h
> > 
> > Log:
> > make A32 reader align its ptr during init no matter what missaligned mess is given to it
> 
> Indeed this fixed the segfault happening on ARM since r6062.
> But this unfortunatly ruined the performance of A32_BITSTREM_READER :-(
> 
> r6095
> BENCHMARKs: VC:   0.000s VO:   0.000s A:  68.007s Sys:   0.365s =   68.372s
> BENCHMARK%: VC:  0.0000% VO:  0.0000% A: 99.4666% Sys:  0.5334% = 100.0000%
> 
> r6096
> BENCHMARKs: VC:   0.000s VO:   0.000s A:  77.729s Sys:   0.424s =   78.153s
> BENCHMARK%: VC:  0.0000% VO:  0.0000% A: 99.4573% Sys:  0.5427% = 100.0000%
> 
> It is now as slow as the ALT_BITSTREAM_READER.
> I don't understand exactly why, but I've double checked that this is
> this revision which introduced this regression.

did the fast A32_BITSTREAM_READER produce non currupted sound at all?

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

In the past you could go to a library and read, borrow or copy any book
Today you'd get arrested for mere telling someone where the library is