[FFmpeg-devel] Tracking down frame corrupting race conditions on Windows.

Michael Niedermayer michaelni at gmx.at
Tue Apr 24 03:36:21 CEST 2012

On Mon, Apr 23, 2012 at 05:29:47PM -0700, Dale Curtis wrote:
> On Fri, Apr 20, 2012 at 4:55 PM, Michael Niedermayer <michaelni at gmx.at>wrote:
> > > acolwell and I have spent a lot of time trying to track down the source
> > of this
> > > corruption on Windows without much success.  We're hoping the community
> > might
> > > have some better ideas on where to look.  Thanks in advance for any
> > assistance!
> >
> > have you tried without asm (inline+yasm) ? (thats just a random idea,
> > unlikely to help)
> >
> >
> This in fact did help! Configuring the shared libraries with --disable-asm
> resolved any inconsistent hashes for all codecs! What made you suggest
> this? Do you have a problem area in mind?

it was mostly just feeling, theres alot that could be buggy in the
asm or maybe its just the speed difference that now hides it.
Finding out which asm function makes the difference should be "easy"
though, its just a binary search over which to comment out


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I have often repented speaking, but never of holding my tongue.
-- Xenocrates
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