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

[Ben Rosenblum]

Sorry, I replied the the wrong email on the wrong list.  Ignore that.  
My mistake.

Ben Rosenblum wrote:
> 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.
>>
>> ------------------------------------------------------------------------
>>
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>>   
>>     
>
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