Am Sa., 10. Okt. 2020 um 02:44 Uhr schrieb Andriy Gelman
<andriy.gel...@gmail.com>:
>
> From: Chip Kerchner <chip.kerch...@ibm.com>
>
> ---
> libswscale/ppc/yuv2rgb_altivec.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/libswscale/ppc/yuv2rgb_altivec.c
> b/libswscale/ppc/yuv2rgb_altivec.c
> index 536545293d..930ef6b98f 100644
> --- a/libswscale/ppc/yuv2rgb_altivec.c
> +++ b/libswscale/ppc/yuv2rgb_altivec.c
> @@ -283,6 +283,16 @@ static inline void cvtyuvtoRGB(SwsContext *c, vector
> signed short Y,
> *
> ------------------------------------------------------------------------------
> */
>
> +#if !HAVE_VSX
> +static inline vector unsigned char vec_xl(signed long long offset, const
> ubyte *addr)
> +{
> + const vector unsigned char *v_addr = (const vector unsigned char *)
> (addr + offset);
> + vector unsigned char align_perm = vec_lvsl(offset, addr);
> +
> + return (vector unsigned char) vec_perm(v_addr[0], v_addr[1], align_perm);
> +}
> +#endif /* !HAVE_VSX */
Is there a speed impact if this function is used?
Carl Eugen
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