On Fri, Nov 07, 2014 at 05:37:43PM +0800, rongyan wrote: [...] > @@ -88,11 +49,9 @@ static int sad16_x2_altivec(MpegEncContext *v, uint8_t > *pix1, uint8_t *pix2, > /* Read unaligned pixels into our vectors. The vectors are as > follows: > * pix1v: pix1[0] - pix1[15] > * pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16] */ > - vector unsigned char pix1v = vec_ld(0, pix1); > - vector unsigned char pix2l = vec_ld(0, pix2); > - vector unsigned char pix2r = vec_ld(16, pix2); > - vector unsigned char pix2v = vec_perm(pix2l, pix2r, perm1); > - vector unsigned char pix2iv = vec_perm(pix2l, pix2r, perm2); > + vector unsigned char pix1v = VEC_LD(0, pix1); > + vector unsigned char pix2v = VEC_LD(0, pix2); > + vector unsigned char pix2iv = VEC_LD(1, pix2); > > /* Calculate the average vector. */ > vector unsigned char avgv = vec_avg(pix2v, pix2iv);
this would add vec_perm vec_ld and vec_lvsl to vector unsigned char pix1v = vec_ld(0, pix1); for big endian, which would slow it down [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Breaking DRM is a little like attempting to break through a door even though the window is wide open and the only thing in the house is a bunch of things you dont want and which you would get tomorrow for free anyway
signature.asc
Description: Digital signature
_______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
