On Sat, May 07, 2016 at 05:58:21PM +0200, Paul B Mahol wrote:
> On 5/1/16, Christophe Gisquet <christophe.gisq...@gmail.com> wrote:
> > The unique user so far is wmalossless 24bits. The few samples tested show an
> > order of 8, so more unrolling or an avx2 version do not make sense.
> >
> > Timings: 68 -> 49 cycles
> > ---
> > libavcodec/x86/lossless_audiodsp.asm | 33
> > +++++++++++++++++++++++++++++++++
> > libavcodec/x86/lossless_audiodsp_init.c | 7 +++++++
> > 2 files changed, 40 insertions(+)
> >
> > diff --git a/libavcodec/x86/lossless_audiodsp.asm
> > b/libavcodec/x86/lossless_audiodsp.asm
> > index 5597dad..063d7b4 100644
> > --- a/libavcodec/x86/lossless_audiodsp.asm
> > +++ b/libavcodec/x86/lossless_audiodsp.asm
> > @@ -68,6 +68,39 @@ SCALARPRODUCT
> > INIT_XMM sse2
> > SCALARPRODUCT
> >
> > +INIT_XMM sse4
> > +; int ff_scalarproduct_and_madd_int32(int16_t *v1, int32_t *v2, int16_t
> > *v3,
> > +; int order, int mul)
> > +cglobal scalarproduct_and_madd_int32, 4,4,8, v1, v2, v3, order, mul
> > + shl orderq, 1
> > + movd m7, mulm
> > + SPLATW m7, m7
> > + pxor m6, m6
> > + add v1q, orderq
> > + lea v2q, [v2q + 2*orderq]
> > + add v3q, orderq
> > + neg orderq
> > +.loop:
> > + mova m3, [v1q + orderq]
> > + movu m0, [v2q + 2*orderq]
> > + pmovsxwd m4, m3
> > + movu m1, [v2q + 2*orderq + mmsize]
> > + movhlps m5, m3
> > + movu m2, [v3q + orderq]
> > + pmovsxwd m5, m5
> > + pmullw m2, m7
> > + pmulld m0, m4
> > + pmulld m1, m5
> > + paddw m2, m3
> > + paddd m6, m0
> > + paddd m6, m1
> > + mova [v1q + orderq], m2
> > + add orderq, 16
> > + jl .loop
> > + HADDD m6, m0
> > + movd eax, m6
> > + RET
> > +
> > %macro SCALARPRODUCT_LOOP 1
> > align 16
> > .loop%1:
> > diff --git a/libavcodec/x86/lossless_audiodsp_init.c
> > b/libavcodec/x86/lossless_audiodsp_init.c
> > index 197173c..10b6a65 100644
> > --- a/libavcodec/x86/lossless_audiodsp_init.c
> > +++ b/libavcodec/x86/lossless_audiodsp_init.c
> > @@ -31,6 +31,10 @@ int32_t ff_scalarproduct_and_madd_int16_ssse3(int16_t
> > *v1, const int16_t *v2,
> > const int16_t *v3,
> > int order, int mul);
> >
> > +int32_t ff_scalarproduct_and_madd_int32_sse4(int16_t *v1, const int32_t
> > *v2,
> > + const int16_t *v3,
> > + int order, int mul);
> > +
> > av_cold void ff_llauddsp_init_x86(LLAudDSPContext *c)
> > {
> > #if HAVE_YASM
> > @@ -45,5 +49,8 @@ av_cold void ff_llauddsp_init_x86(LLAudDSPContext *c)
> > if (EXTERNAL_SSSE3(cpu_flags) &&
> > !(cpu_flags & (AV_CPU_FLAG_SSE42 | AV_CPU_FLAG_3DNOW))) //
> > cachesplit
> > c->scalarproduct_and_madd_int16 =
> > ff_scalarproduct_and_madd_int16_ssse3;
> > +
> > + if (EXTERNAL_SSE4(cpu_flags))
> > + c->scalarproduct_and_madd_int32 =
> > ff_scalarproduct_and_madd_int32_sse4;
> > #endif
> > }
> > --
> > 2.8.1
> >
> > _______________________________________________
> > ffmpeg-devel mailing list
> > ffmpeg-devel@ffmpeg.org
> > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >
>
> lgtmapplied thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB The bravest are surely those who have the clearest vision of what is before them, glory and danger alike, and yet notwithstanding go out to meet it. -- Thucydides
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