Hello, here is some optimized code for ARM NEON for sconv, svolume and remap (benchmarks below for a Beagleboard-XM) I put this up for review, although there are still some rough edges: * there is no configure option for ARM NEON yet (there is none for SSE/MMX as well); NEON can be disabled at runtime by defining env. var. PULSE_NO_SIMD; ARM NEON code depends on __ARM_NEON__ #defined by the compiler * I have no runtime comparison for the orc svolume code yet (note that orc is not used on ARM yet, although it should be possible) * I would like to be able to test the svolume/remap code against the C reference implementation, however, those are easily available/exposed (or I don't know how to get hold of a function pointer) * the runtime of the existing ARMv6 implementation of volume_s16ne() looks very strange, has this been tested recently? sconv_s16le_to_float() NEON: 1831 usec. ref: 18311 usec. sconv_s16le_from_float() NEON: 3754 usec. ref: 64580 usec. volume_float32ne() NEON: 15716 usec. ref: 59659 usec. volume_s16ne() NEON: 9002 usec. ARM: 313570 usec. ref: 20508 usec. remap_mono_to_stereo(float) NEON: 41533 usec. ref: 51117 usec. remap_mono_to_stereo(s16) NEON: 16022 usec. ref: 38086 usec. regards, p.
