On Mon, 3 Mar 2025, Krzysztof Pyrkosz via ffmpeg-devel wrote:
The idea is to split the 16 bit coefficients into lower and upper half, invoke udot for the lower half, shift by 8, and follow by udot for the upper half. Benchmark on A78: bgra_to_y_128_c: 682.0 ( 1.00x) bgra_to_y_128_neon: 181.2 ( 3.76x) bgra_to_y_128_dotprod: 117.8 ( 5.79x) bgra_to_y_1080_c: 5742.5 ( 1.00x) bgra_to_y_1080_neon: 1472.5 ( 3.90x) bgra_to_y_1080_dotprod: 906.5 ( 6.33x) bgra_to_y_1920_c: 10194.0 ( 1.00x) bgra_to_y_1920_neon: 2589.8 ( 3.94x) bgra_to_y_1920_dotprod: 1573.8 ( 6.48x) --- libswscale/aarch64/input.S | 88 ++++++++++++++++++++++++++++++++++++ libswscale/aarch64/swscale.c | 17 +++++++ 2 files changed, 105 insertions(+)
LGTM, thanks, I pushed this one now. // Martin _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
