Hello, I am about to prepare some ARM NEON optimized code for PulseAudio; attached is a stand-alone test program demonstrating sconv_s16le_from_float() and sconv_s16le_to_float() on 1019 samples questions: is it acceptable to use ARM NEON intrinsics? or is __asm__ __volatile or assembler source preferred? or Orc code? I picked intrinsics due to simplicity... the generated code (gcc-4.6, -O2) looks clean # ./sconv_neon checking NEON sconv_s16le_from_float(2038) NEON: 3723 usec. ref: 64516 usec. checking NEON sconv_s16le_to_float(2038) NEON: 1923 usec. ref: 18280 usec. runtime is for 1000 repetitions on a Beagleboard-XM (NEON vs. reference C code) if it looks OK to you, I'll go ahead and submit patches to integrate with PA... regards, p. -- Peter Meerwald +43-664-2444418 (mobile) -------------- next part -------------- A non-text attachment was scrubbed... Name: sconv_neon.c Type: text/x-csrc Size: 5642 bytes Desc: URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20120109/265f0089/attachment-0001.c>
