26 Mar
2004
26 Mar
'04
12:41 a.m.
On Feb 28, 2004, at 11:45 AM, Rafael Ávila de Espíndola wrote:
Is there any reason for not using the Szu-Wei Lee's algorithm for the short IMDCT (size 12)?
Annexed is a patch witch implements it.
Thanks for this patch.
It's not clear there's a real benefit to using Szu-Wei Lee's algorithm for short blocks. It only saves one multiplication per window, and adds additional complexity. I wasn't able to observe any performance improvement.
If you found otherwise, I'd be interested in your analysis.
Cheers,
--
Rob Leslie
rob@mars.org