[Webkit-unassigned] [Bug 74054] fast path to accelerate processing in AudioBus::processWithGainFromMonoStereo

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=74054





--- Comment #10 from Wei James <james.wei at intel.com>  2011-12-12 03:50:27 PST ---
(In reply to comment #6)
> It would be nice to be able to use our friends vsmul() and vadd() in VectorMath.h when the gain has converged on the target.  At the very least it would be good to be able to avoid the clamping of denormals in the inner loop there.  We can consider a strategy where gain is forced to zero if it ever turns out to be less than say -200dB

yes, it can be optimized with SSE as said in the FIXME. 

I saw four FIXMEs in this function and want to do it step by step. This patch mainly focus on the fast path for converged gain. 

Will focus on SSE optimization later. thanks

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