[Ffmpeg-devel] [PATCH] Vorbis fix

Michael Niedermayer michaelni
Thu May 19 22:07:36 CEST 2005


On Thursday 19 May 2005 21:16, Rich Felker wrote:
> On Thu, May 19, 2005 at 10:34:47AM +0200, Milan Cutka wrote:
> > > Hopefully this patch corrects the decoding.
> >
> > Thanks. It works now.
> >
> > Attached patch decreases vorbis decoder stack usage. This is needed when
> > used vorbis decoder in ffdshow which runs in thread created by the player
> > application, sometimes with quite low stack size.
> If windows is this broken, ffdshow needs to allocate its own stack
> before calling libavcodec. We should not design libavcodec around
> broken platforms with miniscule stack, especially if it may affect
> performance (malloc/free on every frame is not acceptable, it will
> lead to horrible memory fragmentation and likely bad cache
> performance).

AFAIK this array is just needed during init, and ive replaced other large 
arrays on the stack with malloced() ones in libav* in the past
we could stop working around these issues but i have the feeling that would 
break a few more platforms then just windows, especially embeded ones i would 
guess ...

so ill apply such a patch if Balatoni Denes (vorbis decoder author) says its 


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