I have an optimized SSE-based resampling library that I bolted in PulseAudio. It was measured to bring a 2x speed-up over speex, mainly because it uses fixed-tables instead of interpolations, the price being that it can only be used for fixed-rate sinks/sources. Since it's hardware-specific, I'd need a means to enable/disable it at compile time, using some kind of voodoo magic in configure.ac. Does anyone have pointers on SSE detection logic? To make things safe, I also detect SSE at run time but would like to disable it completely for other non-x86 or older platforms. Thanks, -Pierre
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