kma@webrtc.org
f0a964dc0a
Optimized WebRtcIsacfix_NormLatticeFilterMa() function for iSAC fix for ARM Neon
architecture with intrinsics and assembly code. The total iSAC codec speech improved about 3~5%. Notes (1) The Neon version after this optimization is not bit-exact with the generic C version. The out quality, however, is not worse as verified by test vectors ouput, and undertandably in theory (32bit x 32bit in Neon is more accurate than the approximation C code in the generic version). (2) In Android, a isac neon library will be built. Along with some new function structures, it is partly for preparation of introducing a run time detection of Neon architecture soon. Review URL: http://webrtc-codereview.appspot.com/268016 git-svn-id: http://webrtc.googlecode.com/svn/trunk@1192 4adac7df-926f-26a2-2b94-8c16560cd09d
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