WIP: add support for Arm Neon intrinsics and a faster DC removal

airspy / airspyone_host

AirSpy's usemode driver and associated tools

http://airspy.com

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WIP: add support for Arm Neon intrinsics and a faster DC removal #62

Closed tzneal closed 2 years ago

tzneal commented 5 years ago

Add support for Arm Neon intrinsics
Add a benchmark/validation for the SSE/Neon specific vode
Add a 30% faster DC removal option (turned on at compile time with -DFAST_DC_REMOVAL=ON)

tzneal commented 5 years ago

I split out the generic and SSE code into separate functions, this let me run benchmarks to make sure performance was improving.

Interested in your thoughts on the fast DC removal option I added, I went from a running average that's modified for every sample to one that's modified every 4 samples so I could vectorize it. The end result is a 20-30% speed improvement on the benchmark (and a corresponding 20-30% reduced CPU usage on the embedded board I'm playing with).

bvernoux commented 5 years ago

Thanks for that contribution and that nice improvement Do you have tested the build and checked all work fine on different platform ? (as I see there is a big refactoring)

Like Linux 32bits / 64bits, Windows 32bits / 64bits, ... ?

tzneal commented 5 years ago

@bvernoux I'm still doing a bit of testing, I'll probably verify it builds on Windows this week and I'll add a comment to let you know.

bvernoux commented 4 years ago

Do you have any update on this Pull Request ? (does it is finished/tested if yes could you add more details)

bvernoux commented 2 years ago

Closed "No feedback after more than 2 years" considered as cancelled