Sebastien Bourdeauducq
2007-Aug-21 09:26 UTC
[Vorbis-dev] Faster implementation of res2_inverse() ?
Hi, Is there a faster implementation of the res2_inverse() function found in Tremor (res012.c) and in the Vorbis reference implementation (lib/res0.c) ? The comments on top of res0.c say it's slow, and profiling the decoder confirms this (#2 most CPU-intensive function, after mdct_backward). I need a faster implementation to acheive good performance on a portable music player I'm designing for my company, and before I dig into the code to reimplement a compatible function, I'd like to know if someone else did it before. Regards, Sebastien