[Ffmpeg-devel] WMA decoder speedup

Benjamin Larsson banan
Fri Mar 23 11:03:47 CET 2007


Ian Braithwaite skrev:
> 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(-)
>
>
> Regards,
> Ian
>   

Hi, can you look at  the XXX: use a table comments also ? Are you 
planning to do a fixedpoint port of the wma codec also ?

MvH
Benjamin Larsson






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