[FFmpeg-devel] [PATCH] yadif: restore speed of the C filtering code

[Michael Niedermayer]

On Sun, Mar 10, 2013 at 03:08:50PM +0100, James Darnley wrote:
> Always use the special filter for the first and last 3 columns (only).
> 
> Changes made in 64ed397 slowed the filter to just under 3/4 of what it
> was.  This commit restores the speed while maintaining identical output.
> 
> For reference, on my Athlon64:
> 1733222 decicycles in old
> 2358563 decicycles in new
> 1727558 decicycles in this
> ---
>  libavfilter/vf_yadif.c          |   70 ++++++++++++++++++--------------------
>  libavfilter/x86/vf_yadif_init.c |   12 ++-----
>  libavfilter/yadif.h             |    4 +--
>  3 files changed, 37 insertions(+), 49 deletions(-)

applied

thanks

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Awnsering whenever a program halts or runs forever is
On a turing machine, in general impossible (turings halting problem).
On any real computer, always possible as a real computer has a finite number
of states N, and will either halt in less than N cycles or never halt.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 198 bytes
Desc: Digital signature
URL: <http://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20130313/61671076/attachment.asc>