[Theora-dev] MMX/mmxext optimisations
rodolphe.ortalo at free.fr
Tue Aug 24 11:56:39 PDT 2004
I confirm encoder ok (with at least x2 speed improvements) on my Athlon, and
that the player does not.
But it's possible to play video made with the MMX-optimized encoder using the
regular (non-MMX) player. :-)
I'm using GCC 3.4 on Debian sarge, with patch theora2-mmx.patch from Adam
(against svn head) and also patch.mmx.gcc3.4 from Ivan.
Really nice work!!!
Trying to do some profiling...
On Tuesday 24 August 2004 15:05, Ivan wrote:
> On Tue, Aug 24, 2004 at 02:32:35PM +0200, Ivan wrote:
> > > gcc 3.4.1 does not like static constants in
> > > i386/fdct_mmx.c and
> > > i386/dsp_mmx.c
> Found the reason, since 3.4 gcc optimizes away unused static variables.
> Attaching the patch which makes it compile and link as supposed.
> (decoder is still broken)
More information about the Theora-dev