[FFmpeg-devel] [PATCH] avfilter/af_anlmdn: add AArch64 SIMD for compute_distance_ssd

[Carl Eugen Hoyos]

Am Fr., 24. Jan. 2020 um 10:15 Uhr schrieb Zhao Zhili <quinkblack at foxmail.com>:
>
> ./ffmpeg -threads 1  -f lavfi -t 60 -i anoisesrc -af 'anlmdn' -f null -benchmark -
>
> Test results on Snapdragon 845:
>     Before:
>         size=N/A time=00:01:00.00 bitrate=N/A speed=11.2x
>         video:0kB audio:5625kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
>         bench: utime=5.320s stime=0.010s rtime=5.358s
>         bench: maxrss=14172kB
>
>     After:
>         size=N/A time=00:01:00.00 bitrate=N/A speed=15.4x
>         video:0kB audio:5625kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
>         bench: utime=3.870s stime=0.000s rtime=3.902s
>         bench: maxrss=14036kB

In case anybody is curious:
This is a higher speedup than the x86 asm optimization offers.

Carl Eugen