[x264-devel] add optimised functions (hpel_filter, ssd, ssim)

[Firas Al-Tahan]

So with the continued support for G4 PPC / G5 - is it still worth holding
onto that dual G4 tower?! Is there much to optimize with regards to AltiVec?
Thanks

On Nov 21, 2007 9:03 AM, Guillaume Poirier <gpoirier at mplayerhq.hu> wrote:

> Hello,
>
> Noboru Asai wrote:
> > Thank you for your commit.
> >
> > 2007/11/19, Guillaume POIRIER <poirierg at gmail.com
> > <mailto:poirierg at gmail.com>>:
> >
> >     > o pixel_ssd_8x8_altivec()
> >
> >     As far as this once is concerned, I seem to be too sleepy to find a
> >     set of command-line options that trigger this usage. Would you have
> >     one that I could use for testing?
> >
> >     Not committed.
> >
> >
> >  This function is called at
> >
> > encoder/rdo.c:
> >
> > int ssd_mb( x264_t *h )
> > {
> >     return h->pixf.ssd[PIXEL_16x16]( h->mb.pic.p_fenc[0], FENC_STRIDE,
> >                                      h-> mb.pic.p_fdec[0], FDEC_STRIDE )
> > *        + h->pixf.ssd[PIXEL_8x8](   h->mb.pic.p_fenc[1], FENC_STRIDE,
> >                                      h->mb.pic.p_fdec[1], FDEC_STRIDE )
> > *        + h->pixf.ssd[PIXEL_8x8](   h-> mb.pic.p_fenc[2], FENC_STRIDE,
> >                                      h->mb.pic.p_fdec[2], FDEC_STRIDE );
> > }
> >
> > ssd_mb() is called at
> >
> > o x264_rd_cost_mb() ( m>=6 )
> > o x264_macroblock_analyse() ( B-Frame, brdo, m>=6 )
> >
> > so I use the following options.
> >
> > --bframes 3 --ref 5 -m 7 --b-rdo
>
> Patch applied.
>
> Thanks a lot.
>
> Guillaume
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