[Ffmpeg-devel] AAC decoder
Tue Mar 21 20:48:33 CET 2006
Oded Shimon wrote:
> Well, for anyone interested. Not even AAC LC is ready, but in general files
> encoded with faac are playable and enjoyable...
> Some ego boosting:
> me: BENCHMARKs: VC: 0.000s VO: 0.000s A: 1.627s Sys: 0.147s = 1.774s
> faad: BENCHMARKs: VC: 0.000s VO: 0.000s A: 1.933s Sys: 0.209s = 2.142s
> me: BENCHMARKs: VC: 0.000s VO: 0.000s A: 1.054s Sys: 0.098s = 1.152s
> faad: BENCHMARKs: VC: 0.000s VO: 0.000s A: 1.294s Sys: 0.103s = 1.398s
> However, I expect it to get slower as I implement more features. AAC was
> really designed in the most anti-optimization way possible.
> Obviously patch is not at all for inclusion, it's only for those
> interested, however I do welcome comments on how I can clean it up (and
> possibly further optimize). Mostly this mail is just a cheap trick for my
> to keep a backup of the last working version of my decoder. :)
One question: Is it really necessary to include tables for sine and KBD
values? I know the sine table can easily be generated at runtime. The
same probably applies for the KBD values.
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