[Webkit-unassigned] [Bug 74842] SSE optimization for FFTFrameFFMPEG.cpp::multiply()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=74842





--- Comment #7 from xingnan.wang at intel.com  2011-12-20 19:05:59 PST ---
(In reply to comment #6)
> vDSP_ctoz and vDSP_ztoc might be useful.  But the FFT algorithm itself is *really* the hotspot.  Do you think it would make sense to create an FFTFrameIPP which calls into an appropriate Intel IPP library FFT function?  We already have one for MKL (FFTFrameMKL), but I've since learned that the IPP library may be more appropriate for media/audio applications.

Agree, IPP is more suitable than MKL for FFT in audio processing and it makes sense to leverage the IPP to do FFT. So I could have a try to add an FFTFrameIPP and enable the library.

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