[FFmpeg-devel] [PATCH 2/5] fate: avoid framemd5, use framecrc its faster

Michael Niedermayer michaelni at gmx.at
Fri May 17 00:50:23 CEST 2013

On Thu, May 16, 2013 at 06:51:33PM -0300, James Almer wrote:
> On 16/05/13 3:35 PM, Nicolas George wrote:
> > You will notice that OpenSSL is always faster than lavu; the difference is
> > negligible for SHA-2 on x86_32, but elsewhere it is significant, and it is
> > even huge for MD5 on Atom, for some reason.
> They have ASM optimized code for several platforms, x86 and x86_64 among them,
> whereas afaik we don't.
> I suppose that's where the difference comes from.

in that case comparing plain C of both against each other would be
interresting too
if openssl is faster in plain C too then we should consider completely
replacing our code by it otherwise it would be better to keep our C
code with openssls asm or something like that

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Democracy is the form of government in which you can choose your dictator
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