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

[Ben Rosenblum]

Would anyone be opposed to setting Miguels account on "require approval" 
and us just completely forgetting to go in and approve it?  Anyone? 

Noboru Asai wrote:
> Hi,
>
> 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
>
>     BTW, If you're looking for some more stuff to optimize, maybe you
>     could have a look at the macro
>     ALTIVEC_STORE_SUM_CLIP: the 2 known cases where this macro is used is
>     with 8-byte aligned memory or 16-bytes aligned memory, so it
>     should be
>     possible to write a specialized version for these two cases, that
>     would be a bit faster.
>
>     This has been discussed already in the thread:
>     http://www.via.ecp.fr/via/ml/x264-devel/2006-09/msg00068.html
>
>
> OK. I'll see them.
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> x264-devel mailing list
> x264-devel at videolan.org
> http://mailman.videolan.org/listinfo/x264-devel
>