[FFmpeg-devel] [PATCH 0/2] x86: hevc_mc: port to SSSE3

[Timothy Gu]

On Aug 23, 2014 7:47 AM, "James Almer" <jamrial at gmail.com> wrote:
>
> On 23/08/14 11:07 AM, Mickaël Raulet wrote:
> > For 10bits and 12bits, they should stay sse4 as well because of
packusdw. You need some instructions to convert it to ssse3 see below
> >
> >
> > static av_always_inline __m128i _MM_PACKUS_EPI32( __m128i a, __m128i b )
> > {
> >      a = _mm_slli_epi32 (a, 16);
> >      a = _mm_srai_epi32 (a, 16);
> >      b = _mm_slli_epi32 (b, 16);
> >      b = _mm_srai_epi32 (b, 16);
> >      a = _mm_packs_epi32 (a, b);
> >     return a;
> > }
>
> There's a PACK macro in lavfi/x86/yasm-16.asm that does this without
intrinsics.

You meant yadif-16, right?

Timothy