On Sat, Sep 24, 2022 at 9:26 PM Hendrik Leppkes <h.lepp...@gmail.com> wrote: > > On Sat, Sep 24, 2022 at 8:43 PM Martin Storsjö <mar...@martin.st> wrote: > > > > On Sat, 24 Sep 2022, Lynne wrote: > > > > > This commit changes both the encoder and decoder to use the new lavu/tx > > > code, > > > which has faster C transforms and more assembly optimizations. > > > > What's the case of e.g. 32 bit arm - that does have a bunch of fft and > > mdct assembly, but is that something that ends up used by opus today, or > > does the mdct15 stuff use separate codepaths that aren't optimized there > > today yet? > > > > mdct15 only has some x86 assembly, nothing for ARM. > Only the normal (power of 2) fft/mdct has some ARM 32-bit assembly. >
Actually, I missed that the mdct15 internally uses one of the normal fft functions for a part of the calculation, but how much impact that has on performance vs. the new code where the C alone is quite a bit faster would have to be confirmed by Lynne. - Hendrik _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
