[FFmpeg-devel] [PATCH v4 1/9] lavc/vp8dsp: R-V put_vp8_pixels

[Lynne]

May 7, 2024, 18:54 by uk7b at foxmail.com:

> From: sunyuechi <sunyuechi at iscas.ac.cn>
>
> C908:
> vp8_put_pixels4_c: 78.0
> vp8_put_pixels4_rvi: 33.7
> vp8_put_pixels8_c: 278.0
> vp8_put_pixels8_rvi: 55.0
> vp8_put_pixels16_c: 999.0
> vp8_put_pixels16_rvi: 86.7
> ---
>  libavcodec/riscv/Makefile      |  1 +
>  libavcodec/riscv/vp8dsp.h      | 75 ++++++++++++++++++++++++++++++++++
>  libavcodec/riscv/vp8dsp_init.c | 22 ++++++++++
>  libavcodec/riscv/vp8dsp_rvi.S  | 61 +++++++++++++++++++++++++++
>  libavcodec/vp8dsp.c            |  2 +
>  libavcodec/vp8dsp.h            |  1 +
>  6 files changed, 162 insertions(+)
>  create mode 100644 libavcodec/riscv/vp8dsp.h
>  create mode 100644 libavcodec/riscv/vp8dsp_rvi.S
>
> +
> +av_cold void ff_vp78dsp_init_riscv(VP8DSPContext *c)
> +{
> +#if HAVE_RV
> +    int flags = av_get_cpu_flags();
> +    if (flags & AV_CPU_FLAG_RVI) {
> +#if __riscv_xlen >= 64
>

Why are you not detecting this at runtime?