[MPlayer-dev-eng] [PATCH] AltiVec support in postproc/ + altivec optimizations for yuv2yuvX

Romain Dolbeau dolbeau at irisa.fr
Thu Mar 11 14:50:53 CET 2004

Romain Dolbeau wrote:
> Hello all,
> The attached patch and additional files add
> 1) AltiVec flags & tests in "postproc/" and "vf_scale.c"
> 2) an AltiVec-enhanced yuv2yuvX
> The last one may be suboptimal (it certainly eats
> quite an amount of memory), but it's roughly 6x-7x
> faster than the C code. mencoder display significant
> speed gain on some operations, such as transcoding
> some codecs to svcd.

Forgot to mention : this version doesn't make any assumption,
it checks for data alignement and do the head&tail with C code.

Romain Dolbeau

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