[Ffmpeg-devel] WMA decoder speedup

[Michael Niedermayer]

Hi

On Thu, Mar 22, 2007 at 10:56:21PM +0100, Ian Braithwaite wrote:
> Hi,
> 
> 
> I've been looking at the WMA decoder, and came across:
> 
> /* XXX: optimize all that by build the window and
>    multipying/adding at the same time */
> 
> /* XXX: suppress this */
>    memset(...
> 
> so I gave it a shot.
> 
> 
> On my test clip, I measure a speedup of about 13%, which is way
> more than I was expecting!
> 
>  wma.c    |    2 -
>  wma.h    |    1
>  wmadec.c |  113 +++++++++++++++++++++++++++++++--------------------------------
>  wmaenc.c |    4 +-
>  4 files changed, 60 insertions(+), 60 deletions(-)

if regression tests pass and a few random wma files decode correctly
then this is ok


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

Let us carefully observe those good qualities wherein our enemies excel us
and endeavor to excel them, by avoiding what is faulty, and imitating what
is excellent in them. -- Plutarch
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