[FFmpeg-devel] [PATCH] lavc/h264chroma: RISC-V V add motion compensation for 4xH and 2xH chroma blocks

[Lynne]

Jun 9, 2023, 09:17 by arnie.chang-at-sifive.com at ffmpeg.org:

> Optimize the put and avg filtering for 4xH and 2xH blocks
>
> Signed-off-by: Arnie Chang <arnie.chang at sifive.com>
> ---
> checkasm: using random seed 3475799765
> RVVi32:
>  - h264chroma.chroma_mc [OK]
> checkasm: all 6 tests passed
> avg_h264_chroma_mc1_8_c: 1821.5
> avg_h264_chroma_mc1_8_rvv_i32: 466.5
> avg_h264_chroma_mc2_8_c: 939.2
> avg_h264_chroma_mc2_8_rvv_i32: 466.5
> avg_h264_chroma_mc4_8_c: 502.2
> avg_h264_chroma_mc4_8_rvv_i32: 466.5
> put_h264_chroma_mc1_8_c: 1436.5
> put_h264_chroma_mc1_8_rvv_i32: 382.5
> put_h264_chroma_mc2_8_c: 824.2
> put_h264_chroma_mc2_8_rvv_i32: 382.5
> put_h264_chroma_mc4_8_c: 431.2
> put_h264_chroma_mc4_8_rvv_i32: 382.5
>

Why do they all have the same timing?