[FFmpeg-devel] [PATCH] QCELP postfilter

Michael Niedermayer michaelni
Wed Mar 31 21:25:01 CEST 2010


On Wed, Mar 31, 2010 at 02:37:39PM -0400, Ronald S. Bultje wrote:
> Hi,
> 
> On Wed, Mar 31, 2010 at 1:15 PM, Ronald S. Bultje <rsbultje at gmail.com> wrote:
> > On Sat, Mar 27, 2010 at 12:16 PM, Ronald S. Bultje <rsbultje at gmail.com> wrote:
> >> this implements the FIXME postfilter in qcelpdec.c. Output obviously
> >> changes but I think it sounds good, others please test and let me know
> >> what you think.
> >
> > Another patch, this one matched with the ref code.
> 
> Sorry, I'm messing up badly here.
> 
> Can someone explain me why ffmpeg.c would output all-zero sound (all
> numbers appear to be NaN), whereas ffplay.c outputs audible sound
> (from the very same build)? I'm confused.

make sure there is an emms between mmx and float code
and heed our advice to become an asm guru ;)
and try valgrind if above didnt help

[...]

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