On Tue, 11 Feb 2025, Krzysztof Pyrkosz via ffmpeg-devel wrote:
It's a minor improvement that shaves off 5-8% from the execution time. Instead of shifting by 2 right away and by 7 soon after, shift by 9 one time. Times before and after: A78: rgb24toyv12_16_200_neon: 5366.8 ( 3.62x) rgb24toyv12_128_60_neon: 13574.0 ( 3.34x) rgb24toyv12_512_16_neon: 14463.8 ( 3.33x) rgb24toyv12_1920_4_neon: 13508.2 ( 3.34x) rgb24toyv12_1920_4_negstride_neon: 13525.0 ( 3.34x) rgb24toyv12_16_200_neon: 5293.8 ( 3.66x) rgb24toyv12_128_60_neon: 12955.0 ( 3.50x) rgb24toyv12_512_16_neon: 13784.0 ( 3.50x) rgb24toyv12_1920_4_neon: 12900.8 ( 3.49x) rgb24toyv12_1920_4_negstride_neon: 12902.8 ( 3.49x) A72: rgb24toyv12_16_200_neon: 9695.8 ( 2.50x) rgb24toyv12_128_60_neon: 20286.6 ( 2.70x) rgb24toyv12_512_16_neon: 22276.6 ( 2.57x) rgb24toyv12_1920_4_neon: 19154.1 ( 2.77x) rgb24toyv12_1920_4_negstride_neon: 19055.1 ( 2.78x) rgb24toyv12_16_200_neon: 9214.8 ( 2.65x) rgb24toyv12_128_60_neon: 20731.5 ( 2.65x) rgb24toyv12_512_16_neon: 21145.0 ( 2.70x) rgb24toyv12_1920_4_neon: 17586.5 ( 2.99x) rgb24toyv12_1920_4_negstride_neon: 17571.0 ( 2.98x) A53: rgb24toyv12_16_200_neon: 12880.4 ( 3.76x) rgb24toyv12_128_60_neon: 27776.3 ( 3.94x) rgb24toyv12_512_16_neon: 29411.3 ( 3.94x) rgb24toyv12_1920_4_neon: 27253.1 ( 3.98x) rgb24toyv12_1920_4_negstride_neon: 27474.3 ( 3.95x) rgb24toyv12_16_200_neon: 12196.3 ( 3.95x) rgb24toyv12_128_60_neon: 26943.1 ( 4.07x) rgb24toyv12_512_16_neon: 28642.3 ( 4.07x) rgb24toyv12_1920_4_neon: 26676.6 ( 4.08x) rgb24toyv12_1920_4_negstride_neon: 26713.8 ( 4.07x) --- libswscale/aarch64/rgb2rgb_neon.S | 24 +++++++++++------------- 1 file changed, 11 insertions(+), 13 deletions(-)
Thanks, applied. // 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".
